WorldWideScience

Sample records for repair power train

  1. Schedule Planning for Repairing Power Supply System

    OpenAIRE

    Kuo-Wei Lin; Chein-Jen Kang

    2012-01-01

    Problem statement: Taiwan is located in the tropical ocean areas. The strong typhoon in summer often causes the collapse of electric transmission towers and results in power outages that seriously affect peoples lives and industrial production. Approach: In light of this situation, this study aims to employ project management techniques of Theory of Constraints (TOC) to develop a practical TOC model to quickly repair the towers and restore power supplied system. Results: The actual applicatio...

  2. Schedule Planning for Repairing Power Supply System

    Directory of Open Access Journals (Sweden)

    Kuo-Wei Lin

    2012-01-01

    Full Text Available Problem statement: Taiwan is located in the tropical ocean areas. The strong typhoon in summer often causes the collapse of electric transmission towers and results in power outages that seriously affect peoples lives and industrial production. Approach: In light of this situation, this study aims to employ project management techniques of Theory of Constraints (TOC to develop a practical TOC model to quickly repair the towers and restore power supplied system. Results: The actual application had verified that the research model could not only shorten the duration of work but also save the manpower and material expenses. Conclusion: It once again proved the excellent results of reparation operations by applying TOC to project management.

  3. An animal model to train Lichtenstein inguinal hernia repair

    DEFF Research Database (Denmark)

    Rosenberg, J; Presch, I; Pommergaard, H C

    2013-01-01

    PURPOSE: Inguinal hernia repair is a common surgical procedure, and the majority of operations worldwide are performed ad modum Lichtenstein (open tension-free mesh repair). Until now, no suitable surgical training model has been available for this procedure. We propose an experimental surgical...... training model for Lichtenstein's procedure on the male and female pig. METHODS: In the pig, an incision is made 1 cm cranially to the inguinal sulcus where a string of subcutaneous lymph nodes is located and extends toward the pubic tubercle. The spermatic cord is located in a narrow sulcus in the pig...... pigs, and a total of 55 surgeons have been educated to perform Lichtenstein's hernia repair in these animals. CONCLUSIONS: This new experimental surgical model for training Lichtenstein's hernia repair mimics the human inguinal anatomy enough to make it suitable as a training model. The operation...

  4. Advanced maintenance, inspection & repair technology for nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Hinton, B.M.

    1994-12-31

    Maintenance, inspection, and repair technology for nuclear power plants is outlined. The following topics are discussed: technology for reactor systems, reactor refueling bridge, fuel inspection system, fuel shuffling software, fuel reconstitution, CEA/RCCA/CRA inspection, vessel inspection capabilities, CRDM inspection and repair, reactor internals inspection and repair, stud tensioning system, stud/nut cleaning system, EDM machining technology, MI Cable systems, core exit T/C nozzle assemblies, technology for steam generators, genesis manipulator systems, ECT, UT penetrant inspections, steam generator repair and cleaning systems, technology for balance of plant, heat exchangers, piping and weld inspections, and turbogenerators.

  5. Power Trains. FOS: Fundamentals of Service.

    Science.gov (United States)

    John Deere Co., Moline, IL.

    This power trains manual is one of a series of power mechanics for training in the servicing of transmissions, etc., on farm and industrial machines. Materials provide basic information and illustrations for use by vocational students and teachers as well as shop servicemen and laymen. The ten chapters focus on (1) Power Trains: How They Work; (2)…

  6. POWER ALLOCATION OF DATA DEPENDENT SUPERIMPOSED TRAINING

    Institute of Scientific and Technical Information of China (English)

    Wang Ping; Yuan Weina; Fan Pingzhi

    2008-01-01

    Data Dependent Superimposed Training (DDST) scheme outperforms the traditional superimposed training by fully canceling the effects of unknown data in channel estimator. In DDST,however,the channel estimation accuracy and the data detection or channel equalization performance are affected significantly by the amount of power allocated to data and superimposed training sequence,which is the motivation of this research. In general,for DDST,there is a tradeoff between the channel estimation accuracy and the data detection reliability,i.e.,the more accurate the channel estimation,the more reliable the data detection; on the other hand,the more accurate the channel estimation,the more demanding on the power consumption of training sequence,which in turn leads to the less reliable data detection. In this paper,the relationship between the Signal-to-Noise Ratio (SNR) of the data detector and the training sequence power is analyzed. The optimal power allocation of the training sequence is derived based on the criterion of maximizing SNR of the detector. Analysis and simulation results show that for a fixed transmit power,the SNR and the Symbol Error Rate (SER) of detector vary nonlinearly with the increasing of training sequence power,and there exists an optimal power ratio,which accords with the derived optimal power ratio,among the data and training sequence.

  7. Nuclear power plant operation and training

    Energy Technology Data Exchange (ETDEWEB)

    Sanae, Katsushige [Tokyo Electric Power Co., Inc. (Japan); Mitsumori, Kojiro

    1997-07-01

    In this report, the system for operation of a nuclear power plant and the qualities required for its operators were summarized. In Kashiwazaki-Kariwa Atomic Power Plant of the Tokyo Electric Power Co., Inc. operation is continuously made by 6 groups containing each 10 workers on three shifts. A group including the person in charge participates in the operation through cooperation of the control center and the respective spots. The group leaders are chosen from those approved as a person responsible to its operation. The conditions for the person responsible were as follows: to receive simulator training for senior operator, to have more than 7 years experience of operating a nuclear power plant, to pass a practical examination on the ordinary operation and the emergency one, to receive a training course to master the knowledge and techniques for operating an atomic reactor and to success the oral examination on practical knowledge required to perform the duty. Further, the simulators for ABWR training produced by Toshiba Corp. and Hitachi Ltd. were introduced as an example. And the practical training procedures to manipulate the simulator were presented. (M.N.)

  8. Fuel cell power trains for road traffic

    Science.gov (United States)

    Höhlein, Bernd; Biedermann, Peter; Grube, Thomas; Menzer, Reinhard

    Legal regulations, especially the low emission vehicle (LEV) laws in California, are the driving forces for more intensive technological developments with respect to a global automobile market. In the future, high efficient vehicles at very low emission levels will include low temperature fuel cell systems (e.g., polymer electrolyte fuel cell (PEFC)) as units of hydrogen-, methanol- or gasoline-based electric power trains. In the case of methanol or gasoline/diesel, hydrogen has to be produced on-board using heated steam or partial oxidation reformers as well as catalytic burners and gas cleaning units. Methanol could also be used for direct electricity generation inside the fuel cell (direct methanol fuel cell (DMFC)). The development potentials and the results achieved so far for these concepts differ extremely. Based on the experience gained so far, the goals for the next few years include cost and weight reductions as well as optimizations in terms of the energy management of power trains with PEFC systems. At the same time, questions of fuel specification, fuel cycle management, materials balances and environmental assessment will have to be discussed more intensively. On the basis of process engineering analyses for net electricity generation in PEFC-powered power trains as well as on assumptions for both electric power trains and vehicle configurations, overall balances have been carried out. They will lead not only to specific energy demand data and specific emission levels (CO 2, CO, VOC, NO x) for the vehicle but will also present data of its full fuel cycle (FFC) in comparison to those of FFCs including internal combustion engines (ICE) after the year 2005. Depending on the development status (today or in 2010) and the FFC benchmark results, the advantages of balances results of FFC with PEFC vehicles are small in terms of specific energy demand and CO 2 emissions, but very high with respect to local emission levels.

  9. Area, Delay and Power Analysis of Built in Self Repair Using 2-D Redundancy

    Directory of Open Access Journals (Sweden)

    Aman Kumar Sabnani

    2015-09-01

    Full Text Available System on Chip comprises of programmable processor, different controller and memory. As chip size is decreasing memory density is increasing. These high density memories are susceptible to faults. To increase the yield and make device reliable, testing and self-repair are the important issues. To repair embedded memories in SOC, Built in self-repair techniques are used by firstly detecting, then locating and in the end repairing the memory. In this paper six BISR are designed using six different March algorithms as MBIST then compared altogether. Since power dissipation during testing operation is around twice the power dissipation during normal operational mode, thus low power BISR design is necessary considering the power constraints these days. Due to high switching activity chip can get overheated resulting in malfunction and damage. Power consumption is reduced by reducing the switching activity in the address line when writing and reading the memory during test.

  10. Effects of weight training on power performance

    Directory of Open Access Journals (Sweden)

    KAUKAB AZEEM

    2011-06-01

    Full Text Available Introduction: Harris et al. declared that some researchers claim the use of 80% of 1RM is recommended toimprove power characteristics, while others suggest 50-60% of 1RM and below. Kawamori and Haff agreed withHarris et al., stating that there is inconsistency in the optimal load to produce the highest power. They claimedthat some studies that used untrained subjects, single joint exercises, and upper-body exercises reported 30-45%of 1RM, while others using trained subjects, multi-joint exercises, and lower-body exercises reported 30-70% of1RM.Method: The purpose of the study was to find out the effect of weight training in the developing the powerperformance among 20 students between 16 to 18 years of age enrolled for physical education course for theacademic year 2010, were selected as subjects. Pre and post test was conducted for the group on 1RM of squats,bench press and dead lift. 45 minutes weight training program, twice a week, for 12 weeks was given to thesubjects. The statistical tools used were mean, SD, and ‘t’ –test.Results & Discussion: The analysis of the data reveals that the subjects with the training have shownimprovement in the performance of squats from pre to post test with the mean and S.D being (76.00, 26.59 and(93.75, 27.19 respectively. The improvement is quite encouraging and highly significant (p<0.0001.With regard to bench press exercise of the subjects the mean and S.D in the pre and post test were (53.00, 23.14and (70.25, 23.37. The data clearly speaks of an improved performance from pre to post scores of the studentswhich is highly significant at (p<0.0001. The mean and S.D in the pre and post test were (104.00, 28.31 and(135.00, 24.97 respectively with respect to dead lift exercise. There is an increase in the power of the studentswhich is encouraging and highly significant with (p<0.0001.Conclusions: It is concluded from this study, that there was a marked improvement in the performance of thestudents in

  11. Developing the concept of maintenance and repairs in projects of power units for new-generation nuclear power stations

    Science.gov (United States)

    Gurinovich, V. D.; Yanchenko, Yu. A.

    2012-05-01

    Results from conceptual elaboration of individual requirements for the system of maintenance and repairs that must be implemented in the projects of new-generation nuclear power stations are presented taking as an example the power unit project for a nuclear power station equipped with a standard optimized VVER reactor with enhanced information support (the so-called VVER TOI reactor). Implementation of these concepts will help to achieve competitiveness of such nuclear power stations in the domestic and international markets.

  12. STS-96 Crew Training, Mission Animation, Crew Interviews, STARSHINE, Discovery Rollout and Repair of Hail Damage

    Science.gov (United States)

    1999-01-01

    Live footage shows the crewmembers of STS-96, Commander Kent V. Rominger, Pilot Rick D. Husband, Mission Specialists Ellen Ochoa, Tamara E. Jernigan, Daniel T. Barry, Julie Payette and Valery Ivanovich Tokarev during various training activities. Scenes include astronaut suit-up, EVA training in the Virtual Reality Lab, Orbiter space vision training, bailout training, and crew photo session. Footage also shows individual crew interviews, repair activities to the external fuel tank, and Discovery's return to the launch pad. The engineers are seen sanding, bending, and painting the foam used in repairing the tank. An animation of the deployment of the STARSHINE satellite, International Space Station, and the STS-96 Mission is presented. Footage shows the students from Edgar Allen Poe Middle School sanding, polishing, and inspecting the mirrors for the STARSHINE satellite. Live footage also includes students from St. Michael the Archangel School wearing bunny suits and entering the clean room at Goddard Space Flight Center.

  13. The Training & Development Function And The Power Of Getting ...

    African Journals Online (AJOL)

    The Training & Development Function And The Power Of Getting Things Done. ... LBS Management Review ... The quality of an organization's human resources is key to success, and much of it is a function of training and development.

  14. Using technique vibration diagnostics for assessing the quality of power transmission line supports repairs

    Directory of Open Access Journals (Sweden)

    Cherpakov Aleksander

    2017-01-01

    Full Text Available The considered method for assessing the quality of the repair work to restore the rack supports of transmission lines is based on the method of vibration diagnostics. Power transmission line supports with a symmetrical destruction of the protective layer of concrete in the ground in violation of the construction section were chosen as an object. Finite element modelling package Ansys was used in assessing the quality of repair work. The example of evaluating the quality of repair using the relative adhesion defective area design criteria in the analysis of natural vibration frequencies is given.

  15. The reliability of the repair weld joints of aged high temperature components in fossil power boilers

    Energy Technology Data Exchange (ETDEWEB)

    Okamura, Hiroyuki [Science Univ. of Tokyo (Japan); Ohtani, Ryuichi [Kyoto Univ. (Japan); Fujii, Kazuya [Japan Power Engineering and Inspection Corp., Tokyo (Japan); Yokoyama, Tomomitsu; Nishimura, Nobuhiko [Mitsubishi Heavy Industries Ltd., Tokyo (Japan); Suzuki, Komei [Japan Steel Works Ltd., Tokyo (Japan)

    1998-11-01

    It is of fundamental engineering importance to be able to give reliable assessments of the effective service life of the critical components used within fossil power plants, particularly for those operating for prolonged periods. It is common practice for such assessments to have been estimated using destructive tests, typically the stress rupture test, this having been recognized as one of the most reliable evaluation methods available. Its only drawback is that it often does not permit the component to be in use following the sampling of the test specimen without repairing. The current piece of work focuses on the reliability of the repair welds of components for specimens taken from fossil power plants, having been in service for prolonged periods. Several such repairs to welds have been made to an old power boiler, in particular to a superheater header which is fabricated from 2.25Cr-1Mo steel. Under close examination the repairs to the girth weldment showed susceptibilities of weld cracking, similar to that observed in as-manufactured material. Within the repaired region of the welded joint the microstructure, tensile properties and toughness seemed to be unaffected. The hardness attained its minimum value within the heat affected zone, HAZ of the repair weld, overlapping that of original girth weld HAZ. Furthermore, the stress rupture strength achieved its minimum value at the same position taking on the same value as the strength associated with the aged girth welded joint. (orig.)

  16. 29 CFR 1915.120 - Powered industrial truck operator training.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 7 2010-07-01 2010-07-01 false Powered industrial truck operator training. 1915.120... Gear and Equipment for Rigging and Materials Handling § 1915.120 Powered industrial truck operator training. Note: The requirements applicable to shipyard employment under this section are identical...

  17. Training, simulation, restoration expert system for power grid

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The paper introduces some technology for training, simulation, restoration expert system of power grid, the structure of the system including function composition, hardware and software composition are discussed, knowledge representation and the method to establish device graphical library for expert system are given, the fault setting and diagnosis for training and simulation as well as restoration technology with deep first searching arithmetic and heuristic inference are presented. The research provides a good base for developing the training, simulation, restoration system of power companies.

  18. Plyometrics: A Legitimate Form of Power Training?

    Science.gov (United States)

    Duda, M

    1988-03-01

    More and more athletes are training with plyometric exercises, which involve explosive movements such as jumping. Proponents swear by the drills, but researchers have yet to substantiate the risks and benefits.

  19. A survey of repair practices for nuclear power plant containment metallic pressure boundaries

    Energy Technology Data Exchange (ETDEWEB)

    Oland, C.B.; Naus, D.J. [Oak Ridge National Lab., TN (United States)

    1998-05-01

    The Nuclear Regulatory Commission has initiated a program at the Oak Ridge National Laboratory to provide assistance in their assessment of the effects of potential degradation on the structural integrity and leaktightness of metal containment vessels and steel liners of concrete containments in nuclear power plants. One of the program objectives is to identify repair practices for restoring metallic containment pressure boundary components that have been damaged or degraded in service. This report presents issues associated with inservice condition assessments and continued service evaluations and identifies the rules and requirements for the repair and replacement of nonconforming containment pressure boundary components by welding or metal removal. Discussion topics include base and welding materials, welding procedure and performance qualifications, inspection techniques, testing methods, acceptance criteria, and documentation requirements necessary for making acceptable repairs and replacements so that the plant can be returned to a safe operating condition.

  20. Change of body composition in process of power conditional training

    Directory of Open Access Journals (Sweden)

    Anikieiev D.M.

    2015-12-01

    Full Text Available Purpose: to work out recommendations on choosing of exercises for power conditional trainees, considering decrease of fat mass percentage as the purpose. Methods: analysis of changes of body composition of trainees, practicing different kinds of conditional power training. Results: the data about influence of different physical loads on thickness of subcutaneous fat in different parts of body have been generalized. Recommendations on choosing of exercises for power conditional trainees for body composition improving have been presented. It was found that fat loss occurs quicker in upper part of body (subcutaneous and visceral. This is observed with increasing of motor functioning and reducing calories of eating. When training any separate muscular group changes of subcutaneous fat take place not compulsory in body parts, in which the trained group is located. Conclusions: it is purposeful to mainly use basic (multi-joint exercises in power conditional training.

  1. Training-Based SWIPT: Optimal Power Splitting at the Receiver

    OpenAIRE

    Zhou, Xiangyun

    2014-01-01

    We consider a point-to-point system with simultaneous wireless information and power transfer (SWIPT) over a block fading channel. Each transmission block consists of a training phase and a data transmission phase. Pilot symbols are transmitted during the training phase for channel estimation at the receiver. To enable SWIPT, the receiver adopts a power-splitting design, such that a portion of the received signal is used for channel estimation or data detection, while the remaining is used fo...

  2. High-power pulse trains excited by modulated continuous waves

    CERN Document Server

    Wang, Yan; Li, Lu; Malomed, Boris A

    2015-01-01

    Pulse trains growing from modulated continuous waves (CWs) are considered, using solutions of the Hirota equation for solitons on a finite background. The results demonstrate that pulses extracted from the maximally compressed trains can propagate preserving their shape and forming robust arrays. The dynamics of double high-power pulse trains produced by modulated CWs in a model of optical fibers, including the Raman effect and other higher-order terms, is considered in detail too. It is demonstrated that the double trains propagate in a robust form, with frequencies shifted by the Raman effect.

  3. The training of operating personnel at Spanish nuclear power plant

    Energy Technology Data Exchange (ETDEWEB)

    Diaz, Antonio Burgos, E-mail: aburgos@tecnatom.es [TECNATOM S.A.. Escuela de Formacion Almaraz y Trillo, Madrid (Spain)

    2011-07-01

    An essential condition in order to ensure that nuclear power plants are operated reliably and safely is the availability in the Control Room of duly qualified persons capable both of preventing accidents and of responding to them should they occur. Training of the Control Room operating crews is accomplished in two major stages: a lengthy process of initial training in which the knowledge acquired at high school and university is built upon, leading to the specialisation required to appropriately carry out the tasks to be performed in the Control Room, and a continuous training program aimed at maintaining and improving the knowledge and skills required to operate the plant, with feedback of the lessons learned from the industry's operating experience. The use of full-scope simulators replicating the physical conditions and environment of the Control Room allows the period of initial training to be reduced and is the most appropriate method for the continuous training program of the control room personnel, since these simulators increase the realism of the training scenarios, help to better understand the response of the plant and provide an accurate idea of transient response times. Tecnatom is the Training Centre for Spanish Operators; it is the 'Operator Training Factory' and its mission is to train the nuclear power plant operating personnel in both technological fundamentals and the development of diagnostic skills through practical scenarios on the simulator and on-the-job training. Our training programmes are based on a SAT (Systematic Approach to Training) methodology that has been implemented at both Spanish and overseas plants. (author)

  4. Speech understandability of repaired cleft palate patients pre and post caregiver training

    Directory of Open Access Journals (Sweden)

    Jobe Andrea L

    2007-01-01

    Full Text Available Background: Treating speech and language problems in repaired cleft palate patients in India is still an uphill task due to lack of facilities. This study attempted to use parents as team members for the speech management of cleft palate patients in Andhra Pradesh, India. Objectives: To investigate whether a positive change in speech understandability for individuals with cleft palate will result from a parent-administered intervention program. Materials and Methods: Twenty-eight parents had enrolled for the speech camp held in September 2004. The parent-training program at the speech camp ensured that parents were given adequate awareness. Out of the 28, 18 (64.28% reported for one follow-up, referred to in this article as Group I. Ten (35.72% out of the 28 came for two consecutive follow-ups, referred to in this article as Group II. Results: Pre and post training understandability scores obtained in the known context (reciting a familiar poem in the native language, counting 1 to 10 and unknown context (peer group names, family information, describing their journey from home to hospital for Group I and Group II were evaluated. Results revealed that a higher percentage of cases showed significant improvement in understandability in the unknown context after treatment. Unknown context can be considered a measure to assess speech understandability after training. Further, it shows that parent training without practice at home may not show the desired results. Conclusion: This study reveals that parents can effect a positive change in the speech understandability of their children following training, provided the exercises are carried out regularly at home and the parents report for the follow-up assessments and guidance.

  5. Muscular Imbalance Correction in the Power Fitness Training

    OpenAIRE

    Olga E. Aftimichuk; Alexander V. Varvarich

    2013-01-01

    Muscular imbalance is one of the manifestations of pathological-biomechanical changes in muscular-skeletal system. It is the result of tonus-power imbalance of short and relaxed muscles. Muscle shortening is the most striking sign of muscular imbalance. Hypodynamia and passive lifestyle can cause such results. The paper justifies the experimental technique of women muscular imbalances correction by means of power training. Selection of exercises, weights and machines was made, taking into acc...

  6. A standardized resident training program in endoscopic surgery in general and in laparoscopic totally extraperitoneal (TEP) inguinal hernia repair in particular

    DEFF Research Database (Denmark)

    Miserez, Marc; Arregui, Maurice; Bisgaard, Thue

    2009-01-01

    The need for acquisition of specific laparoscopic skills has emphasized the role of a preclinical laboratory-training program. However, for laparoscopic inguinal hernia repair with a steep learning curve, especially for totally extraperitoneal repair, preclinical skill training remains a challeng...

  7. Modern methodic of power cardio training in students’ physical education

    Directory of Open Access Journals (Sweden)

    Osipov A.Yu.

    2016-12-01

    Full Text Available Purpose: significant increase of students’ physical condition and health level at the account of application of modern power cardio training methodic. Material: 120 students (60 boys and 60 girls participated in the research. The age of the tested was 19 years. The research took one year. We used methodic of power and functional impact on trainees’ organism (HOT IRON. Such methodic is some systems of physical exercises with weights (mini-barbells, to be fulfilled under accompaniment of specially selected music. Results: we showed advantages of power-cardio and fitness trainings in students’ health improvement and in elimination obesity. Control tests showed experimental group students achieved confidently higher physical indicators. Boys demonstrated increase of physical strength and general endurance indicators. Girls had confidently better indicators of physical strength, flexibility and general endurance. Increase of control group students’ body mass can be explained by students’ insufficient physical activity at trainings, conducted as per traditional program. Conclusions: students’ trainings by power-cardio methodic with application HOT IRON exercises facilitate development the following physical qualities: strength and endurance in boys and strength, flexibility and endurance in girls. Besides, it was found that such systems of exercises facilitate normalization of boys’ body mass and correction of girls’ constitution.

  8. A Training Manual in Conducting a Workshop in the Design, Construction, Operation, Maintenance and Repair of Hydrams.

    Science.gov (United States)

    Peace Corps, Washington, DC. Office of Programming and Training Coordination.

    This manual presents a comprehensive training design, suggested procedures, and materials for conducting a workshop in the design, construction, operation, maintenance, and repair of hydrams, and in the planning and implementation of hydram projects. Hydrams (hydraulic rams, hydraulic ram pumps, automatic hydraulic ram pumps, rams) are devices…

  9. Sac enlargement due to seroma after endovascular abdominal aortic aneurysm repair with the Endologix PowerLink device.

    Science.gov (United States)

    Nano, Giovanni; Dalainas, Ilias; Bianchi, Paolo G; Gotti, Riccardo; Casana, Renato; Malacrida, Giovanni; Tealdi, Domenico G

    2006-01-01

    A patient who had undergone endovascular repair of an abdominal aortic aneurysm with the Endologix PowerLink bifurcated system presented with delayed aortic aneurysm enlargement due to assumed endotension. He was treated with aortic sac evacuation and wrapping of the endograft. This is the first report of endotension and aneurysm sac enlargement after implantation of the PowerLink endograft.

  10. Effectiveness of accommodation and constant resistance training on maximal strength and power in trained athletes

    Directory of Open Access Journals (Sweden)

    Jalil Ataee

    2014-06-01

    Full Text Available Accommodation resistance is a training technique that may improve strength and power gains beyond those achieved by traditional free weights. In this method, chains are either added on a free-weight bar and combined with traditional plates or added to the bar as the entire load. Purpose. The aim of the current study was to compare the effectiveness of accommodation and constant resistance training methods during a four-week period on maximal strength and power in trained athletes. Methods. This study was comprised of 24 trained athletes, including 16 trained males [8 Wushu athletes (Kung-Fu and 8 wrestlers, age: 20.5 ± 2.00 yrs. old]. Participants were initially tested on weight, body circumference, fat percent, upper and lower body maximal strength, determined by the 1-repetition maximum (1RM test, which determines the greatest amount of weight a person can successfully lift, and upper and lower body power. Participants were equally randomized to either accommodation or constant resistance training groups. Both groups underwent resistance training for a four-week period that consisted of three sessions per week. Multivariate repeated-measures analyses of variance of the data were used to verify significant differences in strength and power between groups. The modified Bonferroni post hoc test was used to compare the obtained results in pre-, mid-, and post test. Results. In the accommodation resistance group, there was a significant difference in lower body maximal strength compared to the constant group (163.12 ± 18.82 kg in the accommodation group vs. 142.25 ± 20.04 kg in the constant group, P = 0.04. No significant differences were found in upper body power, lower body power, and upper body maximal strength between the two groups (P > 0.05. Conclusion. Although there was only a significant difference in lower body maximal strength between groups, accommodation resistance training may induce a physiological training response by improving

  11. MHD advanced power train. Phase 1, Final report: Volume 3, Power train system description and specification for 200MWe Plant

    Energy Technology Data Exchange (ETDEWEB)

    Jones, A.R.

    1985-08-01

    This System Design Description and Specification provides the basis for the design of the magnetohydrodynamic (MHD) Power Train (PT) for a nominal 200 MWe early commercial tiHD/Steam Power Plant. This document has been developed under Task 2, Conceptual Design, of Contract DE-AC22-83PC60575 and is to be used by the project as the controlling and coordinating documentation during future design efforts. Modification and revision of this specification will occur as the design matures, and tiie-Westinghouse MHD Project Manager will be the focal point for maintaining this document and issuing periodic revisions. This document is intended to delineate the power train and-power train components requirements and assumptions that properly reflect the MHD/Steam Power Plant in the PT design. The parameters discussed in this document have been established through system calculations as well as through constraints set by technology and by limitations on materials, cost, physical processes associated with MHD, and the expected operating data for the plant. The specifications listed in this document have precedence over all referenced documents. Where this specification appears to conflict with the requirements of a reference document, such conflicts should be brought to the attention of the Westinghouse MHD Project Manager for resolution.

  12. Early phase interference between low-intensity running and power training in moderately trained females

    DEFF Research Database (Denmark)

    Terzis, Gerasimos; Spengos, Kostas; Methenitis, Spyros

    2016-01-01

    performed after lower-body power training impairs the exercise-induced adaptation in stretch-shortening cycle jumping performance (vertical jump height, peak power), during the first 6 weeks of training, which may be partially linked to inhibited muscle fiber hypertrophy and muscle fiber conduction velocity........94 %, p > 0.05). Maximum isometric force, RFD, and half squat 1-RM increased similarly in both groups. Muscle fiber type composition was not altered in either group. Muscle fiber cross sectional area increased only after PT (17.5 ± 17.4, 14.5 ± 10.4, 20.36 ± 11.3 %, in type I, IIA, and IIX fibers...

  13. Muscular Imbalance Correction in the Power Fitness Training

    Directory of Open Access Journals (Sweden)

    Olga E. Aftimichuk

    2013-09-01

    Full Text Available Muscular imbalance is one of the manifestations of pathological-biomechanical changes in muscular-skeletal system. It is the result of tonus-power imbalance of short and relaxed muscles. Muscle shortening is the most striking sign of muscular imbalance. Hypodynamia and passive lifestyle can cause such results. The paper justifies the experimental technique of women muscular imbalances correction by means of power training. Selection of exercises, weights and machines was made, taking into account the anatomical and physiological characteristics of the body of women of second maturity. The indexes, obtained as a result of fitness programs testing, developed within the frameworks of correctional methods.

  14. Ventana{trade mark, serif} power train features and performance

    Science.gov (United States)

    Mohedano, R.; Benitez, P.; Zamora, P.; Miñano, J. C.; Mendes, J.; Cvetkovic, A.; Vilaplana, J.; Hernandez, M.; Chaves, J.; Biot, G.

    2013-09-01

    Most CPV systems are based on Fresnel lenses. Among these, LPI-patented Fresnel-Köhler (FK) concentrator outstands owing to performance and practical reasons. The Ventana{trade mark, serif} power train is the first off-the-shelf commercial product based on the FK and comprises both the primary (POE) lenses (a 36-units 1×1 m2 acrylic panel) and glass (or silica glass) secondary optics (SOE). This high concentration optical train (Cg=1,024×, ˜250mm optical depth) fits with 5×5 mm2 (at least) solar cells. The optical train is the fruit of a 1-year development that has included design, modeling, prototyping and characterization, and through the process we had the opportunity to find out how well the actual performance correlates with models, but also learned practical aspects of a CPV system of this kind, some of which have very positive impact on system performance and reliability.

  15. TRAINING AT THE OPTIMUM POWER ZONE PRODUCES SIMILAR PERFORMANCE IMPROVEMENTS TO TRADITIONAL STRENGTH TRAINING

    Directory of Open Access Journals (Sweden)

    Irineu Loturco

    2013-03-01

    Full Text Available The purpose of this study was to test if substituting a regular maximum strength-oriented training regimen by a power-oriented one at the optimal power load in the first phase of a traditional periodization produces similar performance improvements later on into the training period. Forty five soldiers of the Brazilian brigade of special operations with at least one year of army training experience were divided into a control group (CG - n = 15, 20.18 ± 0.72 yrs, 1.74 ± 0.06 m, 66.7 ± 9.8 kg, and 1RM/weight ratio = 1.14 ± 0.12, a traditional periodization group (TG - n = 15, 20.11 ± 0.7 yrs, 1.72 ± 0.045 m, 63.1 ± 3.6 kg, and 1RM/weight ratio = 1.21 ± 0.16; and a maximum-power group (MPG - n = 15, 20.5 ± 0.6 yrs, 1.73 ± 0.049m, 67.3 ± 9.8 kg, 1RM/weight ratio = 1.20 ± 0.14. Maximum strength (26.2% and 24.6%, CMJ height (30.8% and 39.1% and sprint speed (11.6% and 14.5% increased significantly (p < 0.05 and similarly for the MPG and TG, respectively, from pre- to post-assessments. Our data suggests that a power training regimen may be used in the initial phase of the training cycle without impairing performance later on into the training period.

  16. Results of distal hypospadias repair after pediatric urology fellowship training: A comparison of junior surgeons with their mentor.

    Science.gov (United States)

    Bush, N C; Barber, T D; Dajusta, D; Prieto, J C; Ziada, A; Snodgrass, W

    2016-06-01

    Teaching and learning hypospadias repair is a major component of pediatric urology fellowship training. Educators must transfer skills to fellows, without increasing patient complications. Nevertheless, few studies report results of surgeons during their first years of independent practice. To review outcomes of distal hypospadias repairs performed during the same 2-year period by consecutive, recently matriculated, surgeons in independent practice, and to compare them to results by their mentor (with >20 years of experience). Exposure to hypospadias surgery during fellowship was determined from case logs of five consecutive fellows completing training from 2007-2011. TIP was the only technique used to repair distal hypospadias. No fellow operated independently or performed complete repairs under supervision. Instead, the first 3 months were spent assisting their mentor, observing surgical methodology and decision-making. Then, each performed selected portions under direct supervision, including: degloving, penile straightening, developing glans wings, incising and tubularizing the urethral plate, creating a barrier layer, sewing the glansplasty, and skin closure. Overall fellow participation in each case was skills sufficient to duplicate the mentor's results were transferred. These data suggest there should be no learning curve for distal hypospadias after training. This report raises several considerations for surgical educators. First, mentors should review their own results, to be certain that they are correctly performing and teaching procedures. Second, programs need to determine key steps for procedures they teach, and then emphasize their optimal performance. Finally, mentors should expect former fellows to report back their initial results of hypospadias repair to be certain lessons taught were learned. Otherwise, preventable complications resulting from technical errors will be multiplied in the children operated by their trainees as they enter

  17. 49 CFR 238.447 - Train operator's controls and power car cab layout.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Train operator's controls and power car cab layout... Specific Requirements for Tier II Passenger Equipment § 238.447 Train operator's controls and power car cab layout. (a) Train operator controls in the power car cab shall be arranged so as to minimize the...

  18. Cognitive skill training for nuclear power plant operational decision making

    Energy Technology Data Exchange (ETDEWEB)

    Mumaw, R.J.; Swatzler, D.; Roth, E.M. [Westinghouse Electric Corp., Pittsburgh, PA (United States); Thomas, W.A. [Quantum Technologies, Inc., Oak Brook, IL (United States)

    1994-06-01

    Training for operator and other technical positions in the commercial nuclear power industry traditionally has focused on mastery of the formal procedures used to control plant systems and processes. However, decisionmaking tasks required of nuclear power plant operators involve cognitive skills (e.g., situation assessment, planning). Cognitive skills are needed in situations where formal procedures may not exist or may not be as prescriptive, as is the case in severe accident management (SAM). The Westinghouse research team investigated the potential cognitive demands of SAM on the control room operators and Technical Support Center staff who would be most involved in the selection and execution of severe accident control actions. A model of decision making, organized around six general cognitive processes, was developed to identify the types of cognitive skills that may be needed for effective performance. Also, twelve SAM scenarios were developed to reveal specific decision-making difficulties. Following the identification of relevant cognitive skills, 19 approaches for training individual and team cognitive skills were identified. A review of these approaches resulted in the identification of general characteristics that are important in effective training of cognitive skills.

  19. Nevada Renewable Energy Training Project: Geothermal Power Plant Operators

    Energy Technology Data Exchange (ETDEWEB)

    Jim, Nichols [Truckee Meadows Community College, Reno, NV (United States)

    2014-04-29

    The purpose of this project was to develop and institute a training program for certified geothermal power plant operators (GPO). An advisory board consisting of subject matter experts from the geothermal energy industry and academia identified the critical skill sets required for this profession. A 34-credit Certificate of Achievement (COA), Geothermal Power Plant Operator, was developed using eight existing courses and developing five new courses. Approval from the Nevada System of Higher Education Board of Regents was obtained. A 2,400 sq. ft. geothermal/fluid mechanics laboratory and a 3,000 sq. ft. outdoor demonstration laboratory were constructed for hands-on training. Students also participated in field trips to geothermal power plants in the region. The majority of students were able to complete the program in 2-3 semesters, depending on their level of math proficiency. Additionally the COA allowed students to continue to an Associate of Applied Science (AAS), Energy Technologies with an emphasis in Geothermal Energy (26 additional credits), if they desired. The COA and AAS are stackable degrees, which provide students with an ongoing career pathway. Articulation agreements with other NSHE institutions provide students with additional opportunities to pursue a Bachelor of Applied Science in Management or Instrumentation. Job placement for COA graduates has been excellent.

  20. Team Training (Training at Own Facility versus Individual Surgeon’s Training (Training at Trainer’s Facility When Implementing a New Surgical Technique: Example from the ONSTEP Inguinal Hernia Repair

    Directory of Open Access Journals (Sweden)

    Jacob Rosenberg

    2014-01-01

    Full Text Available Background. When implementing a new surgical technique, the best method for didactic learning has not been settled. There are basically two scenarios: the trainee goes to the teacher’s clinic and learns the new technique hands-on, or the teacher goes to the trainee’s clinic and performs the teaching there. Methods. An informal literature review was conducted to provide a basis for discussing pros and cons. We also wanted to discuss how many surgeons can be trained in a day and the importance of the demand for a new surgical procedure to ensure a high adoption rate and finally to apply these issues on a discussion of barriers for adoption of the new ONSTEP technique for inguinal hernia repair after initial training. Results and Conclusions. The optimal training method would include moving the teacher to the trainee’s department to obtain team-training effects simultaneous with surgical technical training of the trainee surgeon. The training should also include a theoretical presentation and discussion along with the practical training. Importantly, the training visit should probably be followed by a scheduled visit to clear misunderstandings and fine-tune the technique after an initial self-learning period.

  1. EFFECTS OF STRENGTH VS. BALLISTIC-POWER TRAINING ON THROWING PERFORMANCE

    Directory of Open Access Journals (Sweden)

    Nikolaos Zaras

    2013-03-01

    Full Text Available The purpose of the present study was to investigate the effects of 6 weeks strength vs. ballistic-power (Power training on shot put throwing performance in novice throwers. Seventeen novice male shot-put throwers were divided into Strength (N = 9 and Power (n = 8 groups. The following measurements were performed before and after the training period: shot put throws, jumping performance (CMJ, Wingate anaerobic performance, 1RM strength, ballistic throws and evaluation of architectural and morphological characteristics of vastus lateralis. Throwing performance increased significantly but similarly after Strength and Power training (7.0-13.5% vs. 6.0-11.5%, respectively. Muscular strength in leg press increased more after Strength than after Power training (43% vs. 21%, respectively, while Power training induced an 8.5% increase in CMJ performance and 9.0 - 25.8% in ballistic throws. Peak power during the Wingate test increased similarly after Strength and Power training. Muscle thickness increased only after Strength training (10%, p < 0.05. Muscle fibre Cross Sectional Area (fCSA increased in all fibre types after Strength training by 19-26% (p < 0.05, while only type IIx fibres hypertrophied significantly after Power training. Type IIx fibres (% decreased after Strength but not after Power training. These results suggest that shot put throwing performance can be increased similarly after six weeks of either strength or ballistic power training in novice throwers, but with dissimilar muscular adaptations

  2. Competition and alliances in fuel cell power train development

    Energy Technology Data Exchange (ETDEWEB)

    Schlecht, L. [Technische Universitaet Berlin (Germany). Fuel Cell and Hydrogen Research Centre

    2003-07-01

    For the realisation of the effective application and cost effectiveness of fuel cell power trains, and competitiveness with the current internal combustion engine technology, it will be necessary to either: (a) produce a large number of vehicles, (b) reduce the production costs by permanent production optimisation, or (c) introduce new materials. Learning curves, which have been derived from empirical data of past energy technologies, are initially used to provide a cost prognosis for the market launch of fuel cell power trains. Drawing on game theory the paper then describes a basic model which addresses the issue of the optimal strategy of the automotive industry, in either a monopoly or oligopoly structure. When this model's outputs are combined with the anticipated rate of fuel cell vehicles (FCVs), learning curves and network effects, from the first section of the paper we can see that if the successful market launch of FCVs is desired, an alliance structure within the automotive industry is the optimal path. (author)

  3. Modeling of power train by applying the virtual prototype concept; Kaso genkei ni yoru power train no model ka

    Energy Technology Data Exchange (ETDEWEB)

    Hiramatsu, S.; Harada, Y.; Arakawa, H.; Komori, S. [Mazda Motor Corp., Hiroshima (Japan); Sumida, S. [U-Shin Corp., Tokyo (Japan)

    1997-10-01

    This paper describes the simulation of power train that includes the model developed by applying the virtual prototype concept. By this concept, subsystem models which consist of functional model and mechanism models are integrated into a total system model. This peculiarity in architecture of model, which is called the hierarchical structure, enables us to model a system of large scale with many units, systems and parts easily. Two kinds of computer simulations are performed. One is engine revolution fluctuation by accessory load input, and the other is changing gears by automatic transmission. They are verified to have sufficient accuracy. 2 refs., 12 figs.

  4. Effects of Strength vs. Ballistic-Power Training on Throwing Performance.

    Science.gov (United States)

    Zaras, Nikolaos; Spengos, Konstantinos; Methenitis, Spyridon; Papadopoulos, Constantinos; Karampatsos, Giorgos; Georgiadis, Giorgos; Stasinaki, Aggeliki; Manta, Panagiota; Terzis, Gerasimos

    2013-01-01

    The purpose of the present study was to investigate the effects of 6 weeks strength vs. ballistic-power (Power) training on shot put throwing performance in novice throwers. Seventeen novice male shot-put throwers were divided into Strength (N = 9) and Power (n = 8) groups. The following measurements were performed before and after the training period: shot put throws, jumping performance (CMJ), Wingate anaerobic performance, 1RM strength, ballistic throws and evaluation of architectural and morphological characteristics of vastus lateralis. Throwing performance increased significantly but similarly after Strength and Power training (7.0-13.5% vs. 6.0-11.5%, respectively). Muscular strength in leg press increased more after Strength than after Power training (43% vs. 21%, respectively), while Power training induced an 8.5% increase in CMJ performance and 9.0 - 25.8% in ballistic throws. Peak power during the Wingate test increased similarly after Strength and Power training. Muscle thickness increased only after Strength training (10%, p performance can be increased similarly after six weeks of either strength or ballistic power training in novice throwers, but with dissimilar muscular adaptations. Key pointsBallistic-power training with 30% of 1RM is equally effective in increasing shot put performance as strength training, in novice throwers, during a short training cycle of six weeks.In novice shot putters with relatively low initial muscle strength/mass, short-term strength training might be more important since it can increase both muscle strength and shot put performance.The ballistic type of power training resulted in a significant increase of the mass of type IIx muscle fibres and no change in their proportion. Thus, this type of training might be used effectively during the last weeks before competition, when the strength training load is usually reduced, in order to increase muscle power and shot put performance in novice shot putters.

  5. Effect of traditional resistance and power training using rated perceived exertion for enhancement of muscle strength, power, and functional performance.

    Science.gov (United States)

    Tiggemann, Carlos Leandro; Dias, Caroline Pieta; Radaelli, Regis; Massa, Jéssica Cassales; Bortoluzzi, Rafael; Schoenell, Maira Cristina Wolf; Noll, Matias; Alberton, Cristine Lima; Kruel, Luiz Fernando Martins

    2016-04-01

    The present study compared the effects of 12 weeks of traditional resistance training and power training using rated perceived exertion (RPE) to determine training intensity on improvements in strength, muscle power, and ability to perform functional task in older women. Thirty healthy elderly women (60-75 years) were randomly assigned to traditional resistance training group (TRT; n = 15) or power training group (PT; n = 15). Participants trained twice a week for 12 weeks using six exercises. The training protocol was designed to ascertain that participants exercised at an RPE of 13-18 (on a 6-20 scale). Maximal dynamic strength, muscle power, and functional performance of lower limb muscles were assessed. Maximal dynamic strength muscle strength leg press (≈58 %) and knee extension (≈20 %) increased significantly (p training. Muscle power also increased with training (≈27 %; p training period (≈13 %; p strength, muscle power, and functional performance of lower limbs in elderly women.

  6. Quantitative analysis of peak torque and power-velocity characteristics of shoulder rotator muscles after arthroscopic labral repair.

    Science.gov (United States)

    Szuba, Łukasz; Markowska, Iga; Czamara, Andrzej; Noga, Henryk

    2016-10-01

    We aimed to use biomechanical testing to assess differences in the power and strength of patients who participated in a short-term, home-based rehabilitation program following arthroscopic labral repair compared with a healthy control group. The functional outcomes of patients who underwent arthroscopic labral repair followed by self-directed short-term rehabilitation at home were compared with age- and body mass index (BMI)-matched healthy controls. Group I included 20 male patients who had undergone arthroscopic labral repair after being diagnosed with recurrent anterior glenohumeral joint instability without bony lesions of the humeral head or glenoid. Postoperatively, they participated in physical therapy for 17±4 appointments, followed by self-guided home-based exercises. Group II included 25 males without injuries. The two groups were matched for age and BMI. The orthopaedic examination, functional tests, and biomechanical measurements were performed under isokinetic conditions at an average of 16±3 months postoperatively. Significant differences were observed in range of shoulder rotation on the operative shoulder compared with the unaffected side and in the dominant arms of the control group. The patients were also found to have significant deficits in biomechanical parameters such as power and peak torque angle. Significant deficits in peak torque, power, and peak torque angle during external and internal shoulder rotation remained up to 16 months after arthroscopic labral repair. Further research is needed to understand the changes in shoulder power assessment after labral repair. Copyright © 2016 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

  7. 10 CFR 50.120 - Training and qualification of nuclear power plant personnel.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 1 2010-01-01 2010-01-01 false Training and qualification of nuclear power plant... Training and qualification of nuclear power plant personnel. (a) Applicability. The requirements of this... each holder of a combined license issued under part 52 of this chapter for a nuclear power plant of...

  8. BASIC PRINCIPLES OF ORGANIZING OF REPAIR OF A NEW GENERATION OF ELECTRIC POWER LINES 220 kV AND ABOVE

    Directory of Open Access Journals (Sweden)

    Postolaty V.M.

    2011-08-01

    Full Text Available The article describes the requirements for repair work on single circuit and double circuit overhead transmission lines of compact (VL and controlled self-compensating high voltage transmission power lines (CSHVL.These include overhead power lines to a new generation. They differ from traditional overhead using compact designs of supports, the convergence phase of the spans, circuits and substations connections to ways of regulation. With this new generation have the overhead compared to conventional overhead increased bandwidth and improved technical and economic indicators. The design and features of the new circuit overhead lines require a series of new campaigns for the organization of repairs, which are discussed in this article.

  9. Effects of combined physical exercise training on DNA damage and repair capacity: role of oxidative stress changes.

    Science.gov (United States)

    Soares, Jorge Pinto; Silva, Amélia M; Oliveira, Maria Manuel; Peixoto, Francisco; Gaivão, Isabel; Mota, Maria Paula

    2015-06-01

    Regular physical exercise has been shown to be one of the most important lifestyle influences on improving functional performance, decreasing morbidity and all causes of mortality among older people. However, it is known that acute physical exercise may induce an increase in oxidative stress and oxidative damage in several structures, including DNA. Considering this, the purpose of this study was to identify the effects of 16 weeks of combined physical exercise in DNA damage and repair capacity in lymphocytes. In addition, we aimed to investigate the role of oxidative stress involved in those changes. Fifty-seven healthy men (40 to 74 years) were enrolled in this study. The sample was divided into two groups: the experimental group (EG), composed of 31 individuals, submitted to 16 weeks of combined physical exercise training; and the control group (CG), composed of 26 individuals, who did not undergo any specifically orientated physical activity. We observed an improvement of overall physical performance in the EG, after the physical exercise training. A significant decrease in DNA strand breaks and FPG-sensitive sites was found after the physical exercise training, with no significant changes in 8-oxoguanine DNA glycosylase enzyme activity. An increase was observed in antioxidant activity, and a decrease was found in lipid peroxidation levels after physical exercise training. These results suggest that physical exercise training induces protective effects against DNA damage in lymphocytes possibly related to the increase in antioxidant capacity.

  10. PARAMETER MATCHING OF INTERNAL COMBUSTION ENGINE AND ELECTROMECHANICAL POWER TRAIN OF WHEEL TRACTOR

    Directory of Open Access Journals (Sweden)

    A. Kliuchnikov

    2012-01-01

    Full Text Available The paper considers stepless electromechanical power train of a wheel tractor. Methodology for parameter matching of electromechanical transmission and internal combustion engine for their optimum performance as part of a power wheel tractor unit. 

  11. Knowledge is power: Issues of measuring training\\ud and performance in cycling.

    OpenAIRE

    Passfield, L; Hopker, J.G.; Jobson, Simon; Friel, D; M Zabala

    2016-01-01

    Mobile power meters provide a valid means of measuring cyclists’ power output in the field. These field measurements can be performed with very good accuracy and reliability making the power meter a useful tool for monitoring and evaluating training and race demands. This study examines power meter data from a Grand Tour cyclist’s training and racing and explores the inherent complications created by its stochastic nature. Simple summary methods cannot reflect a session’s variable distributio...

  12. Power train and emission control: allocation procedure by OBD-II system for automotive technology

    Science.gov (United States)

    Kalita, Porag

    2017-06-01

    OBD-II, systems were designed to maintain low emissions of in use vehicles, including light and medium duty vehicles. In 1989, the California code of Regulations (CCR) known as OBD - II was adopted by the California Air Resource Board (CARB) and the objective to reduce hydrocarbon (HC) emission caused by malfunction of the vehicles emission control systems. OBD-II provides additional information to engineer for diagnosis and repair of emissions related problems. OBD-II, standardizes on the amount of memory (Freeze Frame) it uses to store the readings of the vehicle sensor when it logs on emission related Intermittent Trouble code (IT). The intent of OBD-II, systems is to detect most vehicle malfunctions when performance of a power train component or system deteriorates to the point that the vehicle’s HC emission exceed standard. The vehicle operator is notified at the time when the vehicle begins to marginally exceed emission standards, by illuminating the Malfunctions Indicator Light (MIL).

  13. Effects of high-speed power training on muscle strength and power in patients with multiple sclerosis.

    Science.gov (United States)

    Medina-Perez, Carlos; de Souza-Teixeira, Fernanda; Fernandez-Gonzalo, Rodrigo; Hernandez-Murua, Jose-Aldo; Antonio de Paz-Fernandez, Jose

    2016-01-01

    This study examined the effects of a high-speed power training program in peak muscle power and maximal voluntary isometric contraction (MVIC) of knee extensors in patients with relapsing-remitting multiple sclerosis (MS). Forty patients, 20 women (age 42.8 +/- 10.3 yr) and 20 men (age 44.0 +/- 8.7 yr) diagnosed with relapsing-remitting MS were randomly assigned, with respect to sex, to either an exercise group or a control group. Participants from the exercise group performed 12 wk of supervised muscle power training of knee extensors. All subjects were tested for MVIC and peak muscle power at baseline and after the training intervention. A strain gauge was used to measure the MVIC, and peak muscle power was assessed with a linear encoder at five relative loads. The training-related effects were assessed using a t-test. The results showed no significant changes in the control group from baseline to postintervention evaluation. In contrast, the exercise group significantly increased MVIC (10.8%; p muscle power at 40, 50, 60, 70, and 80% of the MVIC by 21.8, 14.5, 17.3, 19.4, and 22.3%, respectively (p power training improve both MVIC and muscle power at five different loads in patients with relapsing-remitting MS.

  14. Effect of a Periodized Power Training Program on the Functional Performances and Contractile Properties of the Quadriceps in Sprinters

    Science.gov (United States)

    Kamandulis, Sigitas; Skurvydas, Albertas; Brazaitis, Marius; Stanislovaitis, Aleksas; Duchateau, Jacques; Stanislovaitiene, Jurate

    2012-01-01

    Our purpose was to compare the effect of a periodized preparation consisting of power endurance training and high-intensity power training on the contractile properties of the quadriceps muscle and functional performances in well trained male sprinters (n = 7). After 4 weeks of high-intensity power training, 60-m sprint running time improved by an…

  15. Kinematic Mechanisms of How Power Training Improves Healthy Old Adults' Gait Velocity

    NARCIS (Netherlands)

    Beijersbergen, Chantal M. I.; Granacher, Urs; Gäbler, Martijn; Devita, Paul; Hortobagyi, Tibor

    2017-01-01

    Introduction: Slow gait predicts many adverse clinical outcomes in old adults, but the mechanisms of how power training can minimize the age-related loss of gait velocity is unclear. We examined the effects of 10 wk of lower extremity power training and detraining on healthy old adults' lower extrem

  16. Power System Electrician: Apprenticeship Course Outline. Apprenticeship and Industry Training. 4609

    Science.gov (United States)

    Alberta Advanced Education and Technology, 2009

    2009-01-01

    The graduate of the Power System Electrician apprenticeship training is a journeyman who will be able to: (1) responsibly do all work tasks expected of a journeyman; (2) supervise, train and coach apprentices; (3) use and maintain hand and power tools to the standards of competency and safety required in the trade; (4) read and interpret drawing,…

  17. The power of DNA double-strand break (DSB) repair testing to predict breast cancer susceptibility.

    Science.gov (United States)

    Keimling, Marlen; Deniz, Miriam; Varga, Dominic; Stahl, Andreea; Schrezenmeier, Hubert; Kreienberg, Rolf; Hoffmann, Isabell; König, Jochem; Wiesmüller, Lisa

    2012-05-01

    Most presently known breast cancer susceptibility genes have been linked to DSB repair. To identify novel markers that may serve as indicators for breast cancer risk, we performed DSB repair analyses using a case-control design. Thus, we examined 35 women with defined familial history of breast and/or ovarian cancer (first case group), 175 patients with breast cancer (second case group), and 245 healthy women without previous cancer or family history of breast cancer (control group). We analyzed DSB repair in peripheral blood lymphocytes (PBLs) by a GFP-based test system using 3 pathway-specific substrates. We found increases of microhomology-mediated nonhomologous end joining (mmNHEJ) and nonconservative single-strand annealing (SSA) in women with familial risk vs. controls (P=0.0001-0.0022) and patients with breast cancer vs. controls (P=0.0004-0.0042). Young age (DSB repair activities in PBLs as method to estimate breast cancer susceptibility beyond limitations of genotyping and to predict responsiveness to therapeutics targeting DSB repair-dysfunctional tumors.

  18. Velocity during Strength and Power Training of the Ankle Plantar and Dorsiflexor Muscles in Older Patients Attending Day Hospital Rehabilitation

    OpenAIRE

    Pavithra Rajan; Porter, Michelle M.

    2015-01-01

    Power training has been proposed as a more effective type of resistance training for older adults for functional performance. It is not yet known whether older adults respond appropriately to instructions for power versus strength training. The purpose of this study was to determine the velocity during strength and power training, with elastic resistance bands, in older adults attending a geriatric rehabilitation day program. It was hypothesized that power training would be faster than stren...

  19. Effectiveness of Traditional Strength vs. Power Training on Muscle Strength, Power and Speed with Youth: A Systematic Review and Meta-Analysis.

    Science.gov (United States)

    Behm, David G; Young, James D; Whitten, Joseph H D; Reid, Jonathan C; Quigley, Patrick J; Low, Jonathan; Li, Yimeng; Lima, Camila D; Hodgson, Daniel D; Chaouachi, Anis; Prieske, Olaf; Granacher, Urs

    2017-01-01

    Numerous national associations and multiple reviews have documented the safety and efficacy of strength training for children and adolescents. The literature highlights the significant training-induced increases in strength associated with youth strength training. However, the effectiveness of youth strength training programs to improve power measures is not as clear. This discrepancy may be related to training and testing specificity. Most prior youth strength training programs emphasized lower intensity resistance with relatively slow movements. Since power activities typically involve higher intensity, explosive-like contractions with higher angular velocities (e.g., plyometrics), there is a conflict between the training medium and testing measures. This meta-analysis compared strength (e.g., training with resistance or body mass) and power training programs (e.g., plyometric training) on proxies of muscle strength, power, and speed. A systematic literature search using a Boolean Search Strategy was conducted in the electronic databases PubMed, SPORT Discus, Web of Science, and Google Scholar and revealed 652 hits. After perusal of title, abstract, and full text, 107 studies were eligible for inclusion in this systematic review and meta-analysis. The meta-analysis showed small to moderate magnitude changes for training specificity with jump measures. In other words, power training was more effective than strength training for improving youth jump height. For sprint measures, strength training was more effective than power training with youth. Furthermore, strength training exhibited consistently large magnitude changes to lower body strength measures, which contrasted with the generally trivial, small and moderate magnitude training improvements of power training upon lower body strength, sprint and jump measures, respectively. Maturity related inadequacies in eccentric strength and balance might influence the lack of training specificity with the unilateral

  20. Effectiveness of Traditional Strength vs. Power Training on Muscle Strength, Power and Speed with Youth: A Systematic Review and Meta-Analysis

    Directory of Open Access Journals (Sweden)

    David G. Behm

    2017-06-01

    Full Text Available Numerous national associations and multiple reviews have documented the safety and efficacy of strength training for children and adolescents. The literature highlights the significant training-induced increases in strength associated with youth strength training. However, the effectiveness of youth strength training programs to improve power measures is not as clear. This discrepancy may be related to training and testing specificity. Most prior youth strength training programs emphasized lower intensity resistance with relatively slow movements. Since power activities typically involve higher intensity, explosive-like contractions with higher angular velocities (e.g., plyometrics, there is a conflict between the training medium and testing measures. This meta-analysis compared strength (e.g., training with resistance or body mass and power training programs (e.g., plyometric training on proxies of muscle strength, power, and speed. A systematic literature search using a Boolean Search Strategy was conducted in the electronic databases PubMed, SPORT Discus, Web of Science, and Google Scholar and revealed 652 hits. After perusal of title, abstract, and full text, 107 studies were eligible for inclusion in this systematic review and meta-analysis. The meta-analysis showed small to moderate magnitude changes for training specificity with jump measures. In other words, power training was more effective than strength training for improving youth jump height. For sprint measures, strength training was more effective than power training with youth. Furthermore, strength training exhibited consistently large magnitude changes to lower body strength measures, which contrasted with the generally trivial, small and moderate magnitude training improvements of power training upon lower body strength, sprint and jump measures, respectively. Maturity related inadequacies in eccentric strength and balance might influence the lack of training specificity with

  1. Impact of Inertial Training on Strength and Power Performance in Young Active Men.

    Science.gov (United States)

    Naczk, Mariusz; Naczk, Alicja; Brzenczek-Owczarzak, Wioletta; Arlet, Jarosław; Adach, Zdzisław

    2016-08-01

    Naczk, M, Naczk, A, Brzenczek-Owczarzak, W, Arlet, J, and Adach, Z. Impact of inertial training on strength and power performance in young active men. J Strength Cond Res 30(8): 2107-2113, 2016-This study evaluated how 5 weeks of inertial training using 2 different loads influenced strength and power performance. Fifty-eight male physical education students were randomly divided into training and control groups. The 2 training groups (T0 and T10) performed inertial training 3 times per week for 5 weeks using the new Inertial Training and Measurement System (ITMS). Each training session included 3 exercise sets involving the knee extensors muscles. The T0 group used only the mass of the ITMS flywheel (19.4 kg), whereas the T10 group had an additional 10 kg on the flywheel. Before and after training, we evaluated maximum force and power of knee extensors muscles, countermovement jump (CMJ), squat jump (SJ), maximal power output achieved during ergometer test PVT, electromyography of quadriceps, and muscle mass. In T0 and T10, respectively, ITMS training induced significant increases in muscle force (25.2 and 23.3%), muscle power (33.2 and 27%), CMJ (3.8 and 6.7%), SJ (2.2 and 6.1%), PVT (8 and 7.4%), and muscle mass (9.8 and 15%). The changes did not significantly differ between T0 and T10. A 16% significant increase of electromyography amplitude (quadriceps muscle) was noted only in T0. The novel ITMS training method is effective for improving muscular strength and power. Improvements in PVT, CMJ, and SJ indicate that the increased strength and power elicited by ITMS training can translate to improvements in sport performance. The ITMS training can also be useful for building muscle mass.

  2. Nuclear power plant simulators: their use in operator training and requalification

    Energy Technology Data Exchange (ETDEWEB)

    Jones, D.W.; Baer, D.K.; Francis, C.C.

    1980-07-01

    This report presents the results of a study performed for the Nuclear Regulatory Commission to evaluate the capabilities and use of nuclear power plant simulators either built or being built by the US nuclear power industry; to determine the adequacy of existing standards for simulator design and for the training of power plant operators on simulators; and to assess the issues about simulator training programs raised by the March 28, 1979, accident at Three Mile Island Unit 2.

  3. First World Report of Internal Power Cable Repair in Left Ventricular Assist Device Jarvik 2000: Case Report.

    Science.gov (United States)

    Sassi, C G; Cameli, M; Dokollari, A; Diciolla, F; Scolletta, S; Ricci, C; Lucatelli, P; Mondillo, S; Maccherini, M

    2017-05-01

    There are limited clinical reports concerning internal power cable fixing in left ventricular assist device (L-VAD) patients. Actually there are no reports in the literature about Jarvik 2000 internal cable repair. We show the first description of a technique for surgical reparation of such a fatal complication. The patient was a 62-year-old woman who had L-VAD implantation (Jarvik 2000) with outflow graft apposition in descending thoracic aorta through left thoracotomy access, in 2009. She arrived urgently on January 25, 2014 for Jarvik 2000 dysfunction correlated with head movements. The neck X-rays revealed the rupture of one of the nine power cables located inside the neck and the damaging of two more cables nearby to be ruptured. On the same day she got pump failure due to the final interruption of the remaining two cables, we were obliged to install femoro-femoral extracorporeal membrane oxygenation (ECMO) assistance, to repair the power cables, approaching them through a pacemaker extension cable. The L-VAD outflow was occluded with vascular ball occluder inserted via right axillary artery under fluoroscopy before ECMO installation. At the end the ECMO assistance was interrupted and the Jarvik 2000 was turned back on. The patient was dismissed from the hospital 12 days after the procedure. At the moment the international literature is poor regarding this issue. This case provides evidence that in emergency conditions ECMO assistance is mandatory and a hybrid surgical and radiological approach could help to repair the damage in safe conditions. Copyright © 2017 Elsevier Inc. All rights reserved.

  4. New Technologies for Repairing Aging Cables in Nuclear Power Plants: M3LW-14OR0404015 Cable Rejuvenation Report

    Energy Technology Data Exchange (ETDEWEB)

    Simmons, Kevin L. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Fifield, Leonard S. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Westman, Matthew P. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Roberts, John A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2014-09-08

    The goal of this project is to conceptually demonstrate techniques to repair cables that have degraded through subjection to long-term thermal and radiation exposure in nuclear power plants. In fiscal year 2014 (FY14) we focused on commercially available ethylene-propylene rubber (EPR) as the relevant test material, isolated a high surface area form of the EPR material to facilitate chemical treatment screening and charaterization, and measured chemical changes in the material due to aging and treatment using Fourier Transfrom Infrared (FTIR) spectroscopy.

  5. StayFit: a wearable application for Gym based power training.

    Science.gov (United States)

    Maheedhar, Maram; Gaurav, Aman; Jilla, Vivek; Tiwari, Vijay N; Narayanan, Rangavittal

    2016-08-01

    Comprehensive fitness training involves both cardiorespiratory and power components. Often power/muscle strength training is confused with cardiorespiratory endurance training. However, each of them target different physiological aspects of fitness. Although, wearable based fitness trackers designed towards cardiorespiratory endurance training are available in the market, a dedicated wearable based fitness application designed for power training/tracking is still not readily available to fitness enthusiasts. With growing usage of wearable technology to manage and track personal health, it is imperative to develop health/fitness applications for wearables. A wearable based application for power training will allow the user to track build-up of muscle strength unobtrusively over a period of time. This work provides a framework and design for automatic detection, counting repetitions of strength training Gym exercises (covering all the major muscle groups), estimate personalized calories spent in each session and track power on a standalone Gear watch (both analysis and display including User Experience(UX) design). Our proposed method detects activity with ~96% sensitivity and ~96% specificity on an average and count repetitions with an overall accuracy of >95% using motion sensor data (accelerometer, gyroscope) for eight major Gym exercises. Additionally, using heart rate sensor data we have provided a mechanism to individually track the power/muscle strength of a person. This work will give further impetus towards developing wearable based systems for personalized fitness tracking and training. This will also give an option for wearable users to address both the crucial aspects of fitness (cardiorespiratory and muscle strength).

  6. Optimizing Soft Magnetic Composites for Power Frequency Applications and Power-Trains

    Science.gov (United States)

    Lemieux, Patrick; Guthrie, Roderick; Isac, Mihaiela

    2012-03-01

    A new approach, together with a new family of soft magnetic composites (SMCs), has been developed and optimized for power alternating-current applications. The different technological and economic restrictions needed to maximize a composite's performance-to-cost ratio are presented. The experimental procedures to produce sintered lamellar SMCs are reported, together with magnetic results and the effects of different processing parameters on their performance. The present results are compared with corresponding data available for soft magnetic materials available on the market (laminations and composites). Data on the mechanical strength of these new SMC structures are also given. The new process results in magnetic and mechanical properties of different alloy systems that are better than those of any of the SMCs available. The present materials' energetic losses can be under 2 W/kg at 60 Hz, at 1 T, whilst their permeability exceeds 2000, while maintaining maximum induction above 1.7 T. These properties are very close to the best results for standard laminations on the market. The present process has the potential to be very inexpensive, owing to its simplicity. Even though not fully isotropic, recent three-dimensional machine designs and process advantages conferred by powder metallurgy techniques can be applied to this new family of lamellar particle composites. Through theoretical calculations and modeling exercises, it is briefly shown that this new kind of material can result in an improvement to the transportation sector where weight and efficiency of newly emerging electrical and hybrid power-trains are of prime importance.

  7. Development of a full-scale training simulator for an 800-MW power unit

    Science.gov (United States)

    Zhuravlev, S. K.; Andreev, A. M.

    2013-07-01

    Stages of work involving preparation of requirements specification, development, and subsequent implementation of a project for constructing a full-scale training simulator of an 800-MW power unit are considered. The training simulator is constructed using the Kosmotronika-Venets computerized automation system developed by PIK Progress (Moscow). The entire personnel training system, the arrangement of drills, and the concept of structuring the entire personnel education system at the Surgut GRES-2 district power station, a branch of E.ON Rossiya, had to be touched in drawing up the requirements specification for elaborating the training simulator. The article describes how these problems were solved.

  8. Velocity during Strength and Power Training of the Ankle Plantar and Dorsiflexor Muscles in Older Patients Attending Day Hospital Rehabilitation

    Directory of Open Access Journals (Sweden)

    Pavithra Rajan

    2015-01-01

    Full Text Available Power training has been proposed as a more effective type of resistance training for older adults for functional performance. It is not yet known whether older adults respond appropriately to instructions for power versus strength training. The purpose of this study was to determine the velocity during strength and power training, with elastic resistance bands, in older adults attending a geriatric rehabilitation day program. It was hypothesized that power training would be faster than strength training, but that there would be large interindividual differences. Nine older patients (70 to 86 years performed power and strength training of the ankle dorsiflexor and plantar flexor muscles using elastic resistance bands. Training sessions were filmed to assess the velocity of training. Power training occurred at faster velocities as compared to strength training (P<0.01 for both muscle groups. However, a wide variation was observed between participants in the training velocities. Older adults attending geriatric rehabilitation do have the potential to develop faster contractions during power training as compared to strength training. Nevertheless, the actual velocities achieved differed between individuals. This could explain some of the mixed findings of studies on power training. Hence, researchers should monitor velocity when comparing different types of resistance training.

  9. Velocity during Strength and Power Training of the Ankle Plantar and Dorsiflexor Muscles in Older Patients Attending Day Hospital Rehabilitation.

    Science.gov (United States)

    Rajan, Pavithra; Porter, Michelle M

    2015-01-01

    Power training has been proposed as a more effective type of resistance training for older adults for functional performance. It is not yet known whether older adults respond appropriately to instructions for power versus strength training. The purpose of this study was to determine the velocity during strength and power training, with elastic resistance bands, in older adults attending a geriatric rehabilitation day program. It was hypothesized that power training would be faster than strength training, but that there would be large interindividual differences. Nine older patients (70 to 86 years) performed power and strength training of the ankle dorsiflexor and plantar flexor muscles using elastic resistance bands. Training sessions were filmed to assess the velocity of training. Power training occurred at faster velocities as compared to strength training (P muscle groups. However, a wide variation was observed between participants in the training velocities. Older adults attending geriatric rehabilitation do have the potential to develop faster contractions during power training as compared to strength training. Nevertheless, the actual velocities achieved differed between individuals. This could explain some of the mixed findings of studies on power training. Hence, researchers should monitor velocity when comparing different types of resistance training.

  10. Muscle performance and functional capacity retention in older women after high-speed power training cessation.

    Science.gov (United States)

    Pereira, Ana; Izquierdo, Mikel; Silva, António J; Costa, Aldo M; González-Badillo, Juan José; Marques, Mário C

    2012-08-01

    Power declines more steeply than strength with advancing age and training cessation among older women and is associated with the loss of functional ability. We tested the hypothesis that the impact of 6 weeks of detraining (DT) subsequent to 12 weeks of high-speed power training on maximal strength (1RM) of the arm and leg muscles, power performance (counter movement jump and ball throwing) and functional task (sit-to-stand test) would decrease physical performance, and specifically power performance. Thirty-seven older women were divided into an experimental group and a control group [EG, n=20, 65.8 (2.5) years; CG: n=17, 64.8 (2.8) years]. Muscular strength, power and functional testings were conducted before the initiation of training (T1), after 12 weeks (T2) and after 6 weeks of DT (T3). During the 12 weeks of training, EG significantly increased their dynamic strength performance (range from 41.9 to 64.1%), muscle power output (range from 18.2 to 33.6%) (pmuscles than in muscle power (2-4.5%) and function (2.8%) (pmuscle strength than in power output and preserved physical independence, mediated in part, by the effectiveness of high-speed power training particularly developed for older women. Copyright © 2012 Elsevier Inc. All rights reserved.

  11. Effect of concurrent endurance and circuit resistance training sequence on muscular strength and power development.

    Science.gov (United States)

    Chtara, Moktar; Chaouachi, Anis; Levin, Gregory T; Chaouachi, Mustapha; Chamari, Karim; Amri, Mohamed; Laursen, Paul B

    2008-07-01

    The purpose of this study was to examine the influence of the sequence order of high-intensity endurance training and circuit training on changes in muscular strength and anaerobic power. Forty-eight physical education students (ages, 21.4 +/- 1.3 years) were assigned to 1 of 5 groups: no training controls (C, n = 9), endurance training (E, n = 10), circuit training (S, n = 9), endurance before circuit training in the same session, (E+S, n = 10), and circuit before endurance training in the same session (S+E, n = 10). Subjects performed 2 sessions per week for 12 weeks. Resistance-type circuit training targeted strength endurance (weeks 1-6) and explosive strength and power (weeks 7-12). Endurance training sessions included 5 repetitions run at the velocity associated with Vo2max (Vo2max) for a duration equal to 50% of the time to exhaustion at Vo2max; recovery was for an equal period at 60% Vo2max. Maximal strength in the half squat, strength endurance in the 1-leg half squat and hip extension, and explosive strength and power in a 5-jump test and countermovement jump were measured pre- and post-testing. No significant differences were shown following training between the S+E and E+S groups for all exercise tests. However, both S+E and E+S groups improved less than the S group in 1 repetition maximum (p strength and explosive strength and power. Circuit training alone induced strength and power improvements that were significantly greater than when resistance and endurance training were combined, irrespective of the intrasession sequencing.

  12. 76 FR 27366 - Chrysler Group, LLC, Power Train Division, Mack Avenue Engine Plants #1 And #2, Including On-Site...

    Science.gov (United States)

    2011-05-11

    ... Employment and Training Administration Chrysler Group, LLC, Power Train Division, Mack Avenue Engine Plants 1... Group, LLC, Power Train Division, Mack Avenue Engine Plant 1, including on-site leased workers of... period at the Mack Avenue Engine Plant 2, Detroit, Michigan location of Chrysler Group, LLC, Power...

  13. Computerized training program usage at the Fort Calhoun Nuclear Power Station

    Energy Technology Data Exchange (ETDEWEB)

    Ruzic, D.H.; Reed, W.H.; Lawton, R.K.; Fluehr, J.J.

    1987-01-01

    The increased US Nuclear Regulatory Commission and Institute of Nuclear Power Operations (INPO) interest in the nuclear power industry training programs resulted in the Omaha Public Power District staff at the Fort Calhoun Nuclear Power Station investigating the potential for computerizing their recently accredited training records, student training requirements, and the process of determining student certification status. Additional areas that were desirable were a computerized question data bank with random test generation, maintaining history of question usage, and tracking of the job task analysis process and course objectives. SCI Software's online personnel training information management system (OPTIM) was selected, subsequent to a bid evaluation, to provide these features while operating on the existing corporate IBM mainframe.

  14. Effects of power training in mechanical stiffness of the lower limbs in soccer players

    Directory of Open Access Journals (Sweden)

    G. Fábrica

    2015-12-01

    Conclusions: We concluded that Kleg can change significantly after a short power training program. Based on our results and previous studies, we suggest that these changes could be mainly associated with adaptions at muscle control level.

  15. A VR Based Anti-accident Training System for Airport’s Power

    Directory of Open Access Journals (Sweden)

    Gu GuoDong

    2013-05-01

    Full Text Available A virtual environment of airport’s power supply is very useful for anti-accident training. In this paper, an effective method of anti-accident training for airport’s power supply based on Delta3D VR engine was proposed. The architecture of airport’s power supply training system was introduced. The electric closet’s operating simulation was accomplished based on the device’s operation logic. The model of fault and relay protection was designed according to electrical characteristics. A finite automaton model of diesel engine was presented based on operating conditions for virtual operation. Finally, a VR based airport’s power supply system was built and verified in worker’s training.

  16. Effectiveness of Traditional Strength vs. Power Training on Muscle Strength, Power and Speed with Youth: A Systematic Review and Meta-Analysis

    OpenAIRE

    Behm, David G.; Young, James D.; Whitten, Joseph H. D.; Jonathan C. Reid; Quigley, Patrick J.; Jonathan Low; Yimeng Li; Lima, Camila D.; Hodgson, Daniel D.; Anis Chaouachi; Olaf Prieske; Urs Granacher

    2017-01-01

    Numerous national associations and multiple reviews have documented the safety and efficacy of strength training for children and adolescents. The literature highlights the significant training-induced increases in strength associated with youth strength training. However, the effectiveness of youth strength training programs to improve power measures is not as clear. This discrepancy may be related to training and testing specificity. Most prior youth strength training programs emphasized lo...

  17. Critical assessment of power trains with fuel-cell systems and different fuels

    Science.gov (United States)

    Höhlein, B.; von Andrian, S.; Grube, Th; Menzer, R.

    Legal regulations (USA, EU) are a major driving force for intensifying technological developments with respect to the global automobile market. In the future, highly efficient vehicles with very low emission levels will include low-temperature fuel-cell systems (PEFC) as units of electric power trains. With alcohols, ether or hydrocarbons used as fuels for these new electric power trains, hydrogen as PEFC fuel has to be produced on board. These concepts including the direct use of methanol in fuel-cell systems, differ considerably in terms of both their development prospects and the results achieved so far. Based on process engineering analyses for net electricity generation in PEFC-powered power trains, as well as on assumptions for electric power trains and vehicle configurations, different fuel-cell performances and fuel processing units for octane, diesel, methanol, ethanol, propane and dimethylether have been evaluated as fuels. The possible benefits and key challenges for different solutions of power trains with fuel-cell systems/on-board hydrogen production and with direct methanol fuel-cell (DMFC) systems have been assessed. Locally, fuel-cell power trains are almost emission-free and, unlike battery-powered vehicles, their range is comparable to conventional vehicles. Therefore, they have application advantages cases of particularly stringent emission standards requiring zero emission. In comparison to internal combustion engines, using fuel-cell power trains can lead to clear reductions in primary energy demand and global, climate-relevant emissions providing the advantage of the efficiency of the hydrogen/air reaction in the fuel cell is not too drastically reduced by additional conversion steps of on-board hydrogen production, or by losses due to fuel supply provision.

  18. Photo-biomodulatory response of low-power laser irradiation on burn tissue repair in mice.

    Science.gov (United States)

    Rathnakar, Bharath; Rao, Bola Sadashiva Satish; Prabhu, Vijendra; Chandra, Subhash; Rai, Sharada; Rao, Anuradha Calicut Kini; Sharma, Mrinalini; Gupta, Pradeep Kumar; Mahato, Krishna Kishore

    2016-12-01

    The present work reports the photo-biomodulatory effect of red (632.8 nm) and near infrared (785 and 830 nm) lasers on burn injury in Swiss albino mice. Animals were induced with a 15-mm full thickness burn injury and irradiated with various fluences (1, 2, 3, 4, and 6 J/cm(2)) of each laser wavelength under study having a constant fluence rate (8.49 mW/cm(2)). The size of the injury following treatment was monitored by capturing the wound images at regular time intervals until complete healing. Morphometric assessment indicated that the group treated with 3-J/cm(2) fluence of 830 nm had a profound effect on healing as compared to untreated controls and various fluences of other wavelengths under study. Histopathological assessment of wound repair on treatment with an optimum fluence (3 J/cm(2)) of 830 nm performed on days 2, 6, 12, and 18 post-wounding resulted in enhanced wound repair with migration of fibroblasts, deposition of collagen, and neovascularization as compared to untreated controls. The findings of the present study have clearly demonstrated that a single exposure of 3-J/cm(2) fluence at 830-nm enhanced burn wound healing progression in mice, which is equivalent to 5 % povidone iodine treatment (reference standard), applied on a daily basis till complete healing.

  19. Power training using pneumatic machines vs. plate-loaded machines to improve muscle power in older adults.

    Science.gov (United States)

    Balachandran, Anoop T; Gandia, Kristine; Jacobs, Kevin A; Streiner, David L; Eltoukhy, Moataz; Signorile, Joseph F

    2017-08-10

    Power training has been shown to be more effective than conventional resistance training for improving physical function in older adults; however, most trials have used pneumatic machines during training. Considering that the general public typically has access to plate-loaded machines, the effectiveness and safety of power training using plate-loaded machines compared to pneumatic machines is an important consideration. The purpose of this investigation was to compare the effects of high-velocity training using pneumatic machines (Pn) versus standard plate-loaded machines (PL). Independently-living older adults, 60years or older were randomized into two groups: pneumatic machine (Pn, n=19) and plate-loaded machine (PL, n=17). After 12weeks of high-velocity training twice per week, groups were analyzed using an intention-to-treat approach. Primary outcomes were lower body power measured using a linear transducer and upper body power using medicine ball throw. Secondary outcomes included lower and upper body muscle muscle strength, the Physical Performance Battery (PPB), gallon jug test, the timed up-and-go test, and self-reported function using the Patient Reported Outcomes Measurement Information System (PROMIS) and an online video questionnaire. Outcome assessors were blinded to group membership. Lower body power significantly improved in both groups (Pn: 19%, PL: 31%), with no significant difference between the groups (Cohen's d=0.4, 95% CI (-1.1, 0.3)). Upper body power significantly improved only in the PL group, but showed no significant difference between the groups (Pn: 3%, PL: 6%). For balance, there was a significant difference between the groups favoring the Pn group (d=0.7, 95% CI (0.1, 1.4)); however, there were no statistically significant differences between groups for PPB, gallon jug transfer, muscle muscle strength, timed up-and-go or self-reported function. No serious adverse events were reported in either of the groups. Pneumatic and plate

  20. 小功率电源变压器的修理设计%The Repairing Design for Small Power Transformers

    Institute of Scientific and Technical Information of China (English)

    林敦; 林宇平

    2001-01-01

    There are some traditional wrong ideas of repairing power transformers in the electronic devices. This paper points out these wrong ideas and corrects them. And it also introduces some new design method to repair small power transformers (1kVA below)%对于小功率(1kVA以下)电源变压器的修理,指出了传统方式(仿照重绕或重新 设计)的不当之处,并提出其修理设计的一些概念。

  1. Health physics activities in support of the thermal shield removal/disposal and core support barrel repair at the St. Lucie Nuclear Power Plant.

    Science.gov (United States)

    Maisler, J J; Buchanan, H F

    1988-02-01

    The health physics activities related to the removal and disposal of a thermal shield at a nuclear power plant and subsequent repairs to the core support barrel required increased planning relative to a normal refueling/maintenance outage. The repair of the core support barrel was a "first" in the nuclear power industry. Pre-job planning was of great concern because of extremely high radiation levels associated with the irradiated stainless steel thermal shield and core support barrel. ALARA techniques used in the preparation of the thermal shield for removal and shipment to the disposal site are discussed.

  2. Effect of isokinetic cycling versus weight training on maximal power output and endurance performance in cycling.

    Science.gov (United States)

    Koninckx, Erwin; Van Leemputte, Marc; Hespel, Peter

    2010-07-01

    The aim of this study was to compare the effects of a weight training program for the leg extensors with isokinetic cycling training (80 rpm) on maximal power output and endurance performance. Both strength training interventions were incorporated twice a week in a similar endurance training program of 12 weeks. Eighteen trained male cyclists (VO(2peak) 60 +/- 1 ml kg(-1) min(-1)) were grouped into the weight training (WT n = 9) or the isokinetic training group (IT n = 9) matched for training background and sprint power (P (max)), assessed from five maximal sprints (5 s) on an isokinetic bicycle ergometer at cadences between 40 and 120 rpm. Crank torque was measured (1 kHz) to determine the torque distribution during pedaling. Endurance performance was evaluated by measuring power, heart rate and lactate during a graded exercise test to exhaustion and a 30-min performance test. All tests were performed on subjects' individual race bicycle. Knee extension torque was evaluated isometrically at 115 degrees knee angle and dynamically at 200 degrees s(-1) using an isokinetic dynamometer. P (max) at 40 rpm increased in both the groups (~15%; P < 0.05). At 120 rpm, no improvement of P (max) was found in the IT training group, which was possibly related to an observed change in crank torque at high cadences (P < 0.05). Both groups improved their power output in the 30-min performance test (P < 0.05). Isometric knee extension torque increased only in WT (P < 0.05). In conclusion, at low cadences, P (max) improved in both training groups. However, in the IT training group, a disturbed pedaling technique compromises an improvement of P (max) at high cadences.

  3. POWER-TYPE STRENGTH TRAINING IN MIDDLE-AGED MEN AND WOMEN

    Directory of Open Access Journals (Sweden)

    Jukka Surakka

    2005-10-01

    Full Text Available Muscle strength declines with increasing age, and the power-type strength characteristics decline even more drastically than the maximal muscle strength. Therefore, it is important to design training programmes specifically for sedentary middle-aged people to effectively improve the power-type strength in leg and trunk muscles. To be suitable for the target group, the exercise programmes should be feasible, motivating and easy to practice. The aim of this study was to design and investigate the effects and feasibility of a power-type strength training programme in 226 middle-aged men and women, with 26 persons as non-training controls. The subjects trained three times a week during 22 weeks, in 12 groups with exercise classes of 10-20 subjects, and using no or very little external equipment. All training sessions were controlled and supervised by an professional instructor. Vertical squat jump, standing long jump, 20 metre running time, maximal anaerobic cycling power, maximal oxygen uptake, and angular trunk muscle flexion and extension velocities were measured before and after the training period to evaluate the training effects. Questionnaires concerning employment, physical activity, smoking, musculoskeletal symptoms and exercise motives were also filled in before and after the training period. The greatest improvements were achieved in vertical squat jump (18% and in angular trunk flexion (14% and extension (16% velocities. An external loading totalling 2.2 kg (attached in ankles increased the height in vertical squat jump by 23% and maximal anaerobic cycling power by 12%, these improvements were significant compared with subjects in no load training group (p = 0.03 in vertical squat jump and p = 0.05 in maximal anaerobic cycling power. Exercise induced injuries occurred in 19% of men and 6% of women. Low back symptoms decreased in exercisers by 12% and knee symptoms (increased by 4% during the intervention. Of all subjects, 24% dropped out

  4. Technology of repair of selected equipment in the power plant type VVER 440

    Energy Technology Data Exchange (ETDEWEB)

    Barborka, J.; Magula, V. [Welding Research Inst. (WRI), Bratislava (Slovakia)

    1998-11-01

    This article is divided in two parts: The first part is studying the effect of individual parameters by the usual and pulsed welding of 15CH2MFA steel. It can be concluded that by use of mechanized or automatic TIG process in PC position with addition of a cold wire with high nickel content the desired quality of repair welded joints of a pressure vessel of VVER 440 reactor can be achieved. Based on the results of the second laboratory study of the renovation technology applied for the rotary surfaces of pressure-tight cover and spindle of the main closing armature type DN 500 it can be concluded, that the developed technology for surfacing the sealing surfaces by TIG process with addition of a high-nickel cold wire the functional capability of the mentioned parts can be fully restored.

  5. Does Powerful Language Training Affect Student Participation, Impression Formation, and Gender Communication in Online Discussions?

    Science.gov (United States)

    Thomas, Crystal Ann

    2012-01-01

    The purpose of this dissertation was to investigate whether powerful language training affected student participation, impression formation, and gender communication style in online discussions. Powerful language was defined as a lack of the use of powerless language. Participants in this study were 507 freshmen taking a first-year college…

  6. Effects on strength, power, and flexibility in adolescents of nonperiodized vs. daily nonlinear periodized weight training.

    Science.gov (United States)

    Moraes, Eveline; Fleck, Steven J; Ricardo Dias, Marcelo; Simão, Roberto

    2013-12-01

    The aim of this study was to compare 2 models of resistance training (RT) programs, nonperiodized (NP) training and daily nonlinear periodized (DNLP) training, on strength, power, and flexibility in untrained adolescents. Thirty-eight untrained male adolescents were randomly assigned to 1 of 3 groups: a control group, NP RT program, and DNLP program. The subjects were tested pretraining and after 4, 8, and 12 weeks for 1 repetition maximum (1RM) resistances in the bench press and 45° leg press, sit and reach test, countermovement vertical jump (CMVJ), and standing long jump (SLJ). Both training groups performed the same sequence of exercises 3 times a week for a total of 36 sessions. The NP RT consisted of 3 sets of 10-12RM throughout the training period. The DNLP training consisted of 3 sets using different training intensities for each of the 3 training sessions per week. The total volume of the training programs was not significantly different. Both the NP and DNLP groups exhibited a significant increase in the 1RM for the bench press and 45° leg press posttraining compared with that pretraining, but there were no significant differences between groups (p ≤ 0.05). The DNLP group's 1RM changes showed greater percentage improvements and effect sizes. Training intensity for the bench press and 45° leg press did not significantly change during the training. In the CMVJ and SLJ tests, NP and DNLP training showed no significant change. The DNLP group showed a significant increase in the sit and reach test after 8 and 12 weeks of training compared with pretraining; this did not occur with NP training. In summary, in untrained adolescents during a 12-week training period, a DNLP program can be used to elicit similar and possible superior maximal strength and flexibility gains compared with an NP multiset training model.

  7. Training Strategies to Improve Muscle Power: Is Olympic-style Weightlifting Relevant?

    Science.gov (United States)

    Helland, Christian; Hole, Eirik; Iversen, Erik; Olsson, Monica Charlotte; Seynnes, Olivier; Solberg, Paul Andre; Paulsen, Gøran

    2017-04-01

    This efficacy study investigated the effects of 1) Olympic-style weightlifting (OWL), 2) motorized strength and power training (MSPT), and 3) free weight strength and power training (FSPT) on muscle power. Thirty-nine young athletes (20 ± 3 yr; ice hockey, volleyball, and badminton) were randomized into the three training groups. All groups participated in two to three sessions per week for 8 wk. The MSPT and FSPT groups trained using squats (two legs and single leg) with high force and high power, whereas the OWL group trained using clean and snatch exercises. MSPT was conducted as slow-speed isokinetic strength training and isotonic power training with augmented eccentric load, controlled by a computerized robotic engine system. FSPT used free weights. The training volume (sum of repetitions × kg) was similar between all three groups. Vertical jumping capabilities were assessed by countermovement jump (CMJ), squat jump (SJ), drop jump (DJ), and loaded CMJ (10-80 kg). Sprinting capacity was assessed in a 30-m sprint. Secondary variables were squat one-repetition maximum (1RM), body composition, quadriceps thickness, and architecture. OWL resulted in trivial improvements and inferior gains compared with FSPT and MSPT for CMJ, SJ, DJ, and 1RM. MSPT demonstrated small but robust effects on SJ, DJ, loaded CMJ, and 1RM (3%-13%). MSPT was superior to FSPT in improving 30-m sprint performance. FSPT and MSPT, but not OWL, demonstrated increased thickness in the vastus lateralis and rectus femoris (4%-7%). MSPT was time-efficient and equally or more effective than FSPT training in improving vertical jumping and sprinting performance. OWL was generally ineffective and inferior to the two other interventions.

  8. Validation of an inanimate low cost model for training minimal invasive surgery (MIS) of esophageal atresia with tracheoesophageal fistula (AE/TEF) repair.

    Science.gov (United States)

    Maricic, Maximiliano Alejo; Bailez, María Marcela; Rodriguez, Susana P

    2016-09-01

    We present the results of the validation of an inanimate model created for training thoracoscopic treatment of esophageal atresia with lower tracheoesophageal fistula (EA/TEF). We used different domestic materials such as a piece of wood (support), corrugated plastic tubes (PVC) of different sizes to simulate ribs, intercostal spaces, trachea and spine and tubular latex balloons to simulate the esophagus and lungs to make the basic model. This device was inserted into the thoracic cavity of a rubber dummy simulating a 3kg newborn with a work area volume of 50ml. The model was designed taking into account the experience of doing this procedure in neonates. The cost of the materials used was 50 US$. Regular video endoscopic equipment and 3mm instruments were used. Thirty-nine international faculty or pediatric surgeons attending hands on courses with different levels of training in minimal invasive surgery (MIS) repair of EA/TEF performed the procedure in the model. We compared the performance of the practitioners with their experience in thoracoscopic repair of EA. A Likert-type scale was used to evaluate results. Previous experience in MIS, anatomical appearance of the model, surgical anatomy compared to a real patient, and utility as a training method were analyzed. We also used a checklist to assess performance. We evaluated: number of errors and types of injuries, quality of the anastomosis, and duration of procedure. To analyze the results we used a T-test, chi-square test and Excel® database to match up some results. Thirty-nine questionnaires were completed. Seven surgeons were experts (≥30 TEF/EA repairs as surgeon), 10 had intermediate level of experience (5 to 29 repairs as surgeon) and 22 were beginners (less than 5 repairs). To simplify the analysis we divided the respondents into low experience LE (MIS operative room setting and team work. Copyright © 2016 Elsevier Inc. All rights reserved.

  9. The Effects of POWER Training in Young and Older Adults after Stroke

    Directory of Open Access Journals (Sweden)

    Jennifer L. Hunnicutt

    2016-01-01

    Full Text Available Background. Approximately 35,000 strokes occur annually in adults below the age of 40, and there is disappointingly little data describing their responses to rehabilitation. The purpose of this analysis was to determine the effects of Poststroke Optimization of Walking using Explosive Resistance (POWER training in young (60 years adults and to describe relationships between training-induced improvements in muscular and locomotor function. Methods. Data was analyzed from 16 individuals with chronic stroke who participated in 24 sessions of POWER training. Outcomes included muscle power generation, self-selected walking speed (SSWS, 6-minute walk test, Fugl-Meyer motor assessment, Berg Balance Scale, and Dynamic Gait Index. Results. There were no significant differences between groups at baseline. Within-group comparisons revealed significant improvements in paretic and nonparetic knee extensor muscle power generation in both groups. Additionally, young participants significantly improved SSWS. Improvements in SSWS were more strongly associated with improvements in power generation on both sides in young versus older participants. Conclusions. Younger adults after stroke seem to preferentially benefit from POWER training, particularly when increasing gait speed is a rehabilitation goal. Future research should aim to further understand age-related differences in response to training to provide optimal treatments for all individuals following stroke.

  10. Neuromuscular contributions to the age-related reduction in muscle power: Mechanisms and potential role of high velocity power training.

    Science.gov (United States)

    McKinnon, Neal B; Connelly, Denise M; Rice, Charles L; Hunter, Susan W; Doherty, Timothy J

    2017-05-01

    Although much of the literature on neuromuscular changes with aging has focused on loss of muscle mass and isometric strength, deficits in muscle power are more pronounced with aging and may be a more sensitive measure of neuromuscular degeneration. This review aims to identify the adaptations to the neuromuscular system with aging, with specific emphasis on changes that result in decreased muscle power. We discuss how these changes in neuromuscular performance can affect mobility, and ultimately contribute to an increased risk for falls in older adults. Finally, we evaluate the literature regarding high-velocity muscle power training (PT), and its potential advantages over conventional strength training for improving functional performance and mitigating fall risk in older adults. Copyright © 2016 Elsevier B.V. All rights reserved.

  11. Ageing, Muscle Power and Physical Function: A Systematic Review and Implications for Pragmatic Training Interventions.

    Science.gov (United States)

    Byrne, Christopher; Faure, Charles; Keene, David J; Lamb, Sarah E

    2016-09-01

    The physiological impairments most strongly associated with functional performance in older people are logically the most efficient therapeutic targets for exercise training interventions aimed at improving function and maintaining independence in later life. The objectives of this review were to (1) systematically review the relationship between muscle power and functional performance in older people; (2) systematically review the effect of power training (PT) interventions on functional performance in older people; and (3) identify components of successful PT interventions relevant to pragmatic trials by scoping the literature. Our approach involved three stages. First, we systematically reviewed evidence on the relationship between muscle power, muscle strength and functional performance and, second, we systematically reviewed PT intervention studies that included both muscle power and at least one index of functional performance as outcome measures. Finally, taking a strong pragmatic perspective, we conducted a scoping review of the PT evidence to identify the successful components of training interventions needed to provide a minimally effective training dose to improve physical function. Evidence from 44 studies revealed a positive association between muscle power and indices of physical function, and that muscle power is a marginally superior predictor of functional performance than muscle strength. Nine studies revealed maximal angular velocity of movement, an important component of muscle power, to be positively associated with functional performance and a better predictor of functional performance than muscle strength. We identified 31 PT studies, characterised by small sample sizes and incomplete reporting of interventions, resulting in less than one-in-five studies judged as having a low risk of bias. Thirteen studies compared traditional resistance training with PT, with ten studies reporting the superiority of PT for either muscle power or functional

  12. 76 FR 22729 - Chrysler Group, LLC, Power Train Division, Mack Avenue Engine Plant #1, Including On-Site Leased...

    Science.gov (United States)

    2011-04-22

    ... Employment and Training Administration Chrysler Group, LLC, Power Train Division, Mack Avenue Engine Plant 1... to Apply for Worker Adjustment Assistance on April 6, 2011, applicable to workers of Chrysler Group, LLC, Power Train Division, Mack Avenue Engine Plant 1, including on-site leased workers of...

  13. [Voluntary alpha-power increasing training impact on the heart rate variability].

    Science.gov (United States)

    Bazanova, O M; Balioz, N V; Muravleva, K B; Skoraia, M V

    2013-01-01

    In order to study the effect of the alpha EEG power increasing training at heart rate variability (HRV) as the index of the autonomic regulation of cognitive functions there were follow tasks: (1) to figure out the impact of biofeedback in the voluntary increasing the power in the individual high-frequency alpha-band effect on heart rate variability and related characteristics of cognitive and emotional spheres, (2) to determine the nature of the relationship between alpha activity indices and heart rate variability, depending on the alpha-frequency EEG pattern at rest (3) to examine how the individual alpha frequency EEG pattern is reflected in changes HRV as a result of biofeedback training. Psychometric indicators of cognitive performance, the characteristics of the alpha-EEG activity and heart rate variability (HRV) as LF/HF and pNN50 were recorded in 27 healthy men aged 18-34 years, before, during, and after 10 sessions of training of voluntary increase in alpha power in the individual high-frequency alpha band with eyes closed. To determine the biofeedback effect on the alpha power increasing training, data subjects are compared in 2 groups: experimental (14) with the real and the control group (13 people)--with mock biofeedback. The follow up effect of trainings was studied through month over the 10 training sessions. Results showed that alpha biofeedback training enhanced the fluency and accuracy in cognitive performance, decreased anxiety and frontal EMG, increased resting frequency, width and power in individual upper alpha range only in participants with low baseline alpha frequency. While mock biofeedback increased resting alpha power only in participants with high baseline resting alpha frequency and did change neither cognitive performance, nor HRV indices. Biofeedback training eliminated the alpha power decrease in response to arithmetic task in both with high and low alpha frequency participants and this effect was followed up over the month. Mock

  14. Squat jump training at maximal power loads vs. heavy loads: effect on sprint ability.

    Science.gov (United States)

    Harris, Nigel K; Cronin, John B; Hopkins, Will G; Hansen, Keir T

    2008-11-01

    Training at a load maximizing power output (Pmax) is an intuitively appealing strategy for enhancement of performance that has received little research attention. In this study we identified each subject's Pmax for an isoinertial resistance training exercise used for testing and training, and then we related the changes in strength to changes in sprint performance. The subjects were 18 well-trained rugby league players randomized to two equal-volume training groups for a 7-week period of squat jump training with heavy loads (80% 1RM) or with individually determined Pmax loads (20.0-43.5% 1RM). Performance measures were 1RM strength, maximal power at 55% of pretraining 1RM, and sprint times for 10 and 30 m. Percent changes were standardized to make magnitude-based inferences. Relationships between changes in these variables were expressed as correlations. Sprint times for 10 m showed improvements in the 80% 1RM group (-2.9 +/- 3.2%) and Pmax group (-1.3 +/- 2.2%), and there were similar improvements in 30-m sprint time (-1.9 +/- 2.8 and -1.2 +/- 2.0%, respectively). Differences in the improvements in sprint time between groups were unclear, but improvement in 1RM strength in the 80% 1RM group (15 +/- 9%) was possibly substantially greater than in the Pmax group (11 +/- 8%). Small-moderate negative correlations between change in 1RM and change in sprint time (r approximately -0.30) in the combined groups provided the only evidence of adaptive associations between strength and power outputs, and sprint performance. In conclusion, it seems that training at the load that maximizes individual peak power output for this exercise with a sample of professional team sport athletes was no more effective for improving sprint ability than training at heavy loads, and the changes in power output were not usefully related to changes in sprint ability.

  15. The effects of power and strength training on bone mineral density in premenopausal women.

    Science.gov (United States)

    Gray, M; Di Brezzo, R; Fort, I L

    2013-08-01

    The purpose of this 48-week exercise intervention was designed to examine the effects of power and resistance training on bone mineral density (BMD). Premenopausal women were recruited and randomly assigned to either a power (N.=8) or resistance (N.=11) training group. The power exercises included jumping rope, skipping, hopping, and other power-type exercises. The resistance training group performed 8-10 whole-body strengthening exercises at 70% one-repetition maximum (1RM). Before and after the exercise intervention, BMD was measured via dual energy x-ray absorptiometry (DXA) for the total-body, lumbar spine, left femoral neck, and left greater trochanter. Muscular strength was measured by hand grip dynamometer and 1RM of chest press and leg press. Muscular power was assessed by the Margaria-Kalamen stair climb test. Data were analyzed using repeated measures ANOVA. There were no statistical differences between the two training groups for any of the BMD measurements. Chest press strength was different between the two groups, increasing 6.41 and 1.1kg for the resistance and power groups, respectively over the course of the training period (F[1.15]=9.44, P<0.01). There was a significant time effect for leg press 1RM (F[1.15]=6.04, P=0.03). The participants increased by 12.37kg after the 48-week intervention. Hand grip strength also increased after the study intervention (F[1.16]=46.32, P<0.01). The results of this study suggest that power and resistance training are comparable techniques for maintaining bone density.

  16. MHD Advanced Power Train Phase I, Final Report, Volume 7

    Energy Technology Data Exchange (ETDEWEB)

    A. R. Jones

    1985-08-01

    This appendix provides additional data in support of the MHD/Steam Power Plant Analyses reported in report Volume 5. The data is in the form of 3PA/SUMARY computer code printouts. The order of presentation in all four cases is as follows: (1) Overall Performance; (2) Component/Subsystem Information; (3) Plant Cost Accounts Summary; and (4) Plant Costing Details and Cost of Electricity.

  17. Power training-induced increases in muscle activation during gait in old adults.

    Science.gov (United States)

    Beijersbergen, Chantal M I; Granacher, Urs; Gäbler, Martijn; DeVita, Paul; Hortobágyi, Tibor

    2017-06-07

    Aging modifies neuromuscular activation of agonist and antagonist muscles during walking. Power training can evoke adaptations in neuromuscular activation that underlie gains in muscle strength and power but it is unknown if these adaptations transfer to dynamic tasks such as walking. We examined the effects of lower extremity power training on neuromuscular activation during level gait in old adults. Twelve community dwelling old adults (age ≥ 65 years) completed a 10-week lower extremity power-training program and thirteen old adults completed a 10-week control period. Before and after the interventions, we measured maximal isometric muscle strength and electromyographic (EMG) activation of the right knee flexor, knee extensor, and plantarflexor muscles on a dynamometer and we measured EMG amplitudes, activation onsets and offsets, and activation duration of the knee flexors, knee extensors, and plantarflexors during gait at habitual, fast, and standardized (1.25±0.6m/s) speeds. Power training-induced increases in EMG amplitude (~41%; 0.47≤d≤1.47; p≤0.05) explained 33% (p=0.049) of increases in isometric muscle strength (~43%; 0.34≤d≤0.80; p≤0.05). Power training-induced gains in plantarflexor activation during push-off (+11%; d=0.38; p=0.045) explained 57% (p=0.004) of the gains in fast gait velocity (+4%; d=0.31; p=0.059). Furthermore, power training increased knee extensor activation (~18%; 0.26≤d≤0.29; p≤0.05) and knee extensor coactivation during the main knee flexor burst (~24%, 0.26≤d≤0.44; p≤0.05) at habitual and fast speed but these adaptations did not correlate with changes in gait velocity Conclusion: Power training increased neuromuscular activation during isometric contractions and level gait in old adults. The power training-induced neuromuscular adaptations were associated with increases in isometric muscle strength and partly with increases in fast gait velocity.

  18. [Changes in the power of cat EEG rhythms during training with acoustic feedback signals].

    Science.gov (United States)

    Fokina, Iu O; Kulichenko, A M; Pavlenko, V B

    2009-01-01

    Dynamics of power relation between beta and theta rhythms and activity of dopaminergic neurons in the ventral tegmentum were studied in chronic EEG biofeedback experiments in two waking cats. EEG biofeedback training was based on a developed scheme, in which the level of a presented sound signal decreased if the ratio of power of beta and theta rhythms recorded in the frontal area increased (due to the increase in the beta-rhythm power and decrease in the power of the theta rhythm). These changes were accompanied by the increase in the activity of tegmental neurons presumably dopaminergic.

  19. Analysis of the reliabilities of maglev train power system with FTA method

    Science.gov (United States)

    Long, Zhiqiang; Lu, Zhiquo; Chen, Huixing; Liu, Shaoke

    2003-09-01

    As to the high safeties and reliabilities of the magnetic suspension train, the most fundamental rule is that under all supposed running disturbances, faults, and other urgent conditions, and at any time, the running train can all stop at any given point, where the passengers can get off the train completely and can all find a safe stopping place. The object studied in this paper is the CMS-3 type electromagnetic suspension sample train developed in the National University of Defense Technology. Based on the method of fault tree analysis, the safeties and the reliabilities of the key part (the power system) of the train are analyzed systematically. And the instructive viewpoints and the improving measures are put forward.

  20. Power train analysis for the DOE/NASA 100-kW wind turbine generator

    Science.gov (United States)

    Seidel, R. C.; Gold, H.; Wenzel, L. M.

    1978-01-01

    Progress in explaining variations of power experienced in the on-line operation of a 100 kW experimental wind turbine-generator is reported. Data are presented that show the oscillations tend to be characteristic of a wind-driven synchronous generator because of low torsional damping in the power train, resonances of its large structure, and excitation by unsteady and nonuniform wind flow. The report includes dynamic analysis of the drive-train torsion, the generator, passive driveline damping, and active pitch control as well as correlation with experimental recordings. The analysis assumes one machine on an infinite bus with constant generator-field excitation.

  1. Interactive Virtual Reactor and Control Room for Education and Training at Universities and Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Satoh, Yoshinori; Li, Ye; Zhu, Xuefeng; Rizwan, Uddin [University of Illinois, Urbana (United States)

    2014-08-15

    Efficient and effective education and training of nuclear engineering students and nuclear workers are critical for the safe operation and maintenance of nuclear power plants. With an eye toward this need, we have focused on the development of 3D models of virtual labs for education, training as well as to conduct virtual experiments. These virtual labs, that are expected to supplement currently available resources, and have the potential to reduce the cost of education and training, are most easily developed on game-engine platforms. We report some recent extensions to the virtual model of the University of Illinois TRIGA reactor.

  2. A Pilot Study Involving the Effect of Two Different Complex Training Protocols on Lower Body Power

    Directory of Open Access Journals (Sweden)

    Smith Chad E.

    2014-09-01

    Full Text Available Purpose. Complex training (CT involves the coupling of two exercises ostensibly to enhance the effect of the second exercise. Typically, the first exercise is a strength exercise and the second exercise is a power exercise involving similar muscles. In most cases, CT is designed to enhance power. The purpose of this study was twofold. First, this study was designed to determine if lower body power could be enhanced using complex training protocols. Second, this study investigated whether the inclusion of a power exercise instead of a strength exercise as the first exercise in CT would produce differences in lower body power. Methods. Thirty-six recreationally-trained men and women aged 20 to 29 years attending a college physical education course were randomly assigned to one of three groups: squat and countermovement squat jumps (SSJ, kettlebell swings and countermovement squat jumps (KSJ, and a control (CON. Training involving CT lasted 6 weeks. All participants were pre- and posttested for vertical jump performance in order to assess lower body power. Results. Vertical jump scores improved for all groups (p < 0.01. The results also indicated that there were no statistically significant differences between group scores across time (p = 0.215. The statistical power for this analysis was low (0.312, most likely due to the small sample size. However, the results did reveal a trend suggesting that the training improvements were greater for both the SSJ and KSJ groups compared with the CON (by 171% and 107%, respectively although significance was not reached. Conclusions. Due to the observed trend, a replication of this study with a greater number of participants over a longer period of time is warranted.

  3. An experimental study of a PEM fuel cell power train for urban bus application

    Science.gov (United States)

    Corbo, P.; Migliardini, F.; Veneri, O.

    An experimental study was carried out on a fuel cell propulsion system for minibus application with the aim to investigate the main issues of energy management within the system in dynamic conditions. The fuel cell system (FCS), based on a 20 kW PEM stack, was integrated into the power train comprising DC-DC converter, Pb batteries as energy storage systems and asynchronous electric drive of 30 kW. As reference vehicle a minibus for public transportation in historical centres was adopted. A preliminary experimental analysis was conducted on the FCS connected to a resistive load through a DC-DC converter, in order to verify the stack dynamic performance varying its power acceleration from 0.5 kW s -1 to about 4 kW s -1. The experiments on the power train were conducted on a test bench able to simulate the vehicle parameters and road characteristics on specific driving cycles, in particular the European R40 cycle was adopted as reference. The "soft hybrid" configuration, which permitted the utilization of a minimum size energy storage system and implied the use of FCS mainly in dynamic operation, was compared with the "hard hybrid" solution, characterized by FCS operation at limited power in stationary conditions. Different control strategies of power flows between fuel cells, electric energy storage system and electric drive were adopted in order to verify the two above hybrid approaches during the vehicle mission, in terms of efficiencies of individual components and of the overall power train. The FCS was able to support the dynamic requirements typical of R40 cycle, but an increase of air flow rate during the fastest acceleration phases was necessary, with only a slight reduction of FCS efficiency. The FCS efficiency resulted comprised between 45 and 48%, while the overall power train efficiency reached 30% in conditions of constant stack power during the driving cycle.

  4. Nuclear power plant steam pipes repairing with Tirant 3 Robot system

    Energy Technology Data Exchange (ETDEWEB)

    Soto, M.; Curiel, M. [Logistica y Acondicionamientos Industriales SAU, Sorolla Center, local 10, Av. de las Cortes Valencianas No. 58, 46015 Valencia (Spain); Lazaro, F. [Revestimientos Anticorrosivos Industriales, S. L. U., Sorolla Center, local 10, Av. de las Cortes Valencianas No. 58, 46015 Valencia (Spain); Arnaldos, A., E-mail: m.soto@lainsa.co [TITANIA Servicios Tecnologicos SL, Sorolla Center, local 10, Av. de las Cortes Valencianas No. 58, 46015 Valencia (Spain)

    2010-10-15

    The metallization arc spray process is based on the projection of molten metal, supplied by means of different stainless alloys wire, over a surface of carbon steel usually, with the object of serving as protection against erosion-corrosion, increasing resistance to abrasion and detrition. A typical application functions covering the steam pipes inner surface in coal-fired power station and nuclear power plants. The results of this process are spectacular in terms of protection against corrosion and abrasion, but its application has conditioning factors, such as: Severe application conditions for workers. Due to the worker's postural position (usually kneeling) in 32 diameter pipes and working with fireproof clothing and masks with outdoor air supplying, due to fumes, sparks and molten metal particles, radiological contamination, confined space, poor lighting, ... Coating uniformity. As metallization is a manual process, the carried out measurements show small variations in the thickness of the coating, always within the tolerance limits established by the applicable regulations and quality assurance. An increase in the uniformity of the projected coating, increase the resistance and give a better surface protection. For all these reasons, Lainsa has developed the Tirant 3 robot, a worldwide innovative system, for metallization of steam pipes inner surface. Tirant 3 robot is tele operated from outside of the pipe, so that human intervention is reduced to the operations of robot positioning and change of metallization wire. As it is an independent system of the human factor, metallization process performance is significantly increased by reducing rest periods due only to the robot maintenance. Likewise, Tirant 3 system permits to increase resulting coating uniformity and thus its resistance, keeping selected parameters constant (forward speed, rotation speed and inner surface distance) depending on required type and thickness of wire. (Author)

  5. Effects of High-Speed Power Training on Muscle Performance and Braking Speed in Older Adults

    Directory of Open Access Journals (Sweden)

    Stephen P. Sayers

    2012-01-01

    Full Text Available We examined whether high-speed power training (HSPT improved muscle performance and braking speed using a driving simulator. 72 older adults (22 m, 50 f; age = 70.6 ± 7.3 yrs were randomized to HSPT at 40% one-repetition maximum (1RM (HSPT: n=25; 3 sets of 12–14 repetitions, slow-speed strength training at 80%1RM (SSST: n=25; 3 sets of 8–10 repetitions, or control (CON: n=22; stretching 3 times/week for 12 weeks. Leg press and knee extension peak power, peak power velocity, peak power force/torque, and braking speed were obtained at baseline and 12 weeks. HSPT increased peak power and peak power velocity across a range of external resistances (40–90% 1RM; P<0.05 and improved braking speed (P<0.05. Work was similar between groups, but perceived exertion was lower in HSPT (P<0.05. Thus, the less strenuous HSPT exerted a broader training effect and improved braking speed compared to SSST.

  6. Power-supply-operations group-training programs, ac/dc power systems and micellaneous information

    Energy Technology Data Exchange (ETDEWEB)

    Harris, C A

    1978-06-30

    This program introduces the technician to three phase a-c power and its relationship to rectifier power conversion systems. A brief introduction is given as to the engineering significance of various parameters such as, phase rotation, ac power relationships, harmonics, transformer voltage vectors, rectifier parameters, filters, water cooling, phase delayed triggers to SCR's, dielectric stress vs life and other related subjects. The significance of the details as they apply to various diagnostic problems that a technician may be called upon to solve is emphasized. Reference CAPE-2747.

  7. A novel NOLM structure with nonreciprocal phase shift bias for power fluctuation reduction of pulse trains

    Institute of Scientific and Technical Information of China (English)

    Liwei Guo; Xue Feng; Yue Liu; Xiaoming Liu

    2006-01-01

    @@ A novel nonlinear optical loop mirror (NOLM) with a nonreciprocal phase shift bias (NPSB), called power equalization NOLM (PE-NOLM), is proposed for reducing the power fluctuation of pulse trains. NPSB provides part of the nonreciprocal phase difference so that the required input power is reduced, and nonsymmetrical coupling ratio of coupler can adjust the transmission curve to improve the equalization range. It has been shown theoretically that compared with earlier PE-NOLM, about 1.6 dB of equalization power reduction and about 2.2 dB of equalization range enhancement could be achieved. Experiments have demonstrated that the output power fluctuation is reduced to less than 0.4 dB, while the required input peak power range is 4.5 dBm (15.6-20.1 dBm).

  8. Low power laser irradiation stimulates cell proliferation via proliferating cell nuclear antigen and Ki-67 expression during tissue repair

    Science.gov (United States)

    Prabhu, Vijendra; Rao, Bola Sadashiva Satish; Mahato, Krishna Kishore

    2015-03-01

    Low power laser irradiation (LPLI) is becoming an increasingly popular and fast growing therapeutic modality in dermatology to treat various ailments without any reported side effects. In the present study an attempt was made to investigate the proliferative potential of red laser light during tissue repair in Swiss albino mice. To this end, full thickness excisional wounds of diameter 15 mm created on mice were exposed to single dose of Helium-Neon laser (632.8 nm; 7 mW; 4.02 mWcm-2; Linear polarization) at 2 Jcm-2 and 10 Jcm-2 along with un-illuminated controls. The granulation tissues from all the respective experimental groups were harvested on day 10 post-wounding following euthanization. Subsequently, tissue regeneration potential of these laser doses under study were evaluated by monitoring proliferating cell nuclear antigen and Ki-67 following the laser treatment and comparing it with the un-illuminated controls. The percentages of Ki-67 or PCNA positive cells were determined by counting positive nuclei (Ki-67/PCNA) and total nuclei in five random fields per tissue sections. Animal wounds treated with single exposure of the 2 Jcm-2 indicated significant elevation in PCNA (Ptested experimental groups as evidenced by the microscopy results in the study. In summary, the findings of the present study have clearly demonstrated the regulation of cell proliferation by LPLI via PCNA and Ki-67 expression during tissue regeneration.

  9. GHG-emissions for cars with different power trains over the whole life cycle

    Energy Technology Data Exchange (ETDEWEB)

    Roeder, A. [Paul Scherrer Inst. (PSI), Villigen (Switzerland)

    1999-08-01

    The method of life-cycle assessment (LCA) has been applied to cars with different power trains. As an example, the results for greenhouse gas (GHG) emissions are presented. They show possibilities and limits for the reduction of these emissions in the transportation sector by means of advanced technology. (author) 2 figs., 4 refs.

  10. Effect of Vibration Training on Anaerobic Power and Quardroceps Surface EMG in Long Jumpers

    Science.gov (United States)

    Liu, Bin; Luo, Jiong

    2015-01-01

    Objective: To explore the anaerobic power and surface EMG (sEMG) of quardrocep muscle in lower extremities after single vibration training intervention. Methods: 8 excellent male long jumpers voluntarily participated in this study. Four intervention modes were devised, including high frequency high amplitude (HFHA,30Hz,6mm), low frequency low…

  11. TNO-ADVANCE: a modular power train simulation and design tool

    NARCIS (Netherlands)

    Venne, J.W.C. van de; Hendriksen, P.; Smokers, R.T.M.; Verkiel, M.

    1998-01-01

    To support its activities in the field of conventional and hybrid vehicles, TNO has developed ADVANCE, a modular simulation tool for the design and evaluation of advanced power trains. In this paper the various features and the potential of ADVANCE are described and illustrated by means of two case

  12. Body-building without power training : Endogenously regulated pectoral muscle hypertrophy in confined shorebirds

    NARCIS (Netherlands)

    Dietz, MW; Piersma, T; Dekinga, A

    1999-01-01

    Shorebirds such as red knots Calidris canutus routinely make migratory flights of 3000 km or more. Previous studies on this species, based on compositional analyses, suggest extensive pectoral muscle hypertrophy in addition to fat storage before take-off. Such hypertrophy could be due to power train

  13. Menstrual Cycle Effects on Anaerobic Power, Muscular Strength, and Muscular Endurance in Trained and Untrained Females.

    Science.gov (United States)

    Rosenburg, Beth S.; And Others

    A study determined if anaerobic power, isometric strength, and isometric endurance are affected by the menstrual cycle and if endurance trained females and untrained females are affected in the same manner on these performance parameters. Subjects were healthy, normally menstruating females, ages 18-34 years who were classified as either trained…

  14. Menstrual Cycle Effects on Anaerobic Power, Muscular Strength, and Muscular Endurance in Trained and Untrained Females.

    Science.gov (United States)

    Rosenburg, Beth S.; And Others

    A study determined if anaerobic power, isometric strength, and isometric endurance are affected by the menstrual cycle and if endurance trained females and untrained females are affected in the same manner on these performance parameters. Subjects were healthy, normally menstruating females, ages 18-34 years who were classified as either trained…

  15. TNO-ADVANCE: a modular power train simulation and design tool

    NARCIS (Netherlands)

    Venne, J.W.C. van de; Hendriksen, P.; Smokers, R.T.M.; Verkiel, M.

    1998-01-01

    To support its activities in the field of conventional and hybrid vehicles, TNO has developed ADVANCE, a modular simulation tool for the design and evaluation of advanced power trains. In this paper the various features and the potential of ADVANCE are described and illustrated by means of two case

  16. Improving the training process of power sports athletes based on their biorhythms

    Directory of Open Access Journals (Sweden)

    Oleksandr Piven

    2014-10-01

    Full Text Available Purpose: improved methods of planning the training process for strength sports athletes with regard to their biorhythms. Material and Methods: the study included 16 athletes qualified yaks were members of the team of the Kharkiv region in weightlifting and powerlifting. Results: revealed that the experimental group athletes who used to planned training load calculations biorhythms improved power rates by 7,2% in compare with the control group who exercised without calculating biorhythms improved results on the power – 4,6%. It was also shown that athletes are more or less manifest Biorhythmic dependence. Conclusions: it was established that the planning of the training process, taking into account jet lag has a positive effect on the result of more than planning the same load without jet lag.

  17. Effect of concurrent training, flexible nonlinear periodization, and maximal-effort cycling on strength and power.

    Science.gov (United States)

    McNamara, John M; Stearne, David J

    2013-06-01

    Although there is considerable research on concurrent training, none has integrated flexible nonlinear periodization and maximal-effort cycling in the same design. The purpose of this investigation was to test outcome measures of strength and power using a pretest-posttest randomized groups design. A strength and endurance (SE) group was compared with a strength, endurance, and maximal-effort cycling (SEC) group. Both groups used a flexible nonlinear periodization design. Thirteen male and 7 female students (mean ± SD: age, 22.5 ± 4.1 years; height, 173.5 ± 12.4 cm; weight, 79.4 ± 20.2 kg; strength training experience, 2.4 ± 2.2 years) participated in this study. Groups were not matched for age, height, weight, strength training experience, or sex, but were randomly assigned to an SE (n = 10) or SEC (n = 10) group. All training was completed within 45 minutes, twice per week (Monday and Wednesday), over 12 consecutive weeks. Both groups were assigned 6.75 total hours of aerobic conditioning, and 13.5 hours of free weight and machine exercises totaling 3,188 repetitions ranging from 5 to 20 repetition maximums. The SEC group performed 2 cycling intervals per workout ranging from 10 to 45 seconds. Pretest and posttest measures included chest press and standing broad jump. Analysis of variance showed that there were no significant differences between the SE and SEC groups on measures of chest press or standing broad jump performance (p, not significant). Paired sample t-tests (p = 0.05) showed significant improvement in strength and power in all groups (pretest to posttest), except for SE jump performance (p, not significant). In conclusion, adding maximal-effort cycling does not provide additional strength or power benefits to a concurrent flexible nonlinear training program. However, an exercise professional can take confidence that a concurrent flexible nonlinear training program can increase strength and power in healthy individuals.

  18. Effects of Instability Versus Traditional Resistance Training on Strength, Power and Velocity in Untrained Men

    Directory of Open Access Journals (Sweden)

    José Luis Maté-Muñoz

    2014-09-01

    Full Text Available The purpose of this study was compare the effects of a traditional and an instability resistance circuit training program on upper and lower limb strength, power, movement velocity and jumping ability. Thirty-six healthy untrained men were assigned to two experimental groups and a control group. Subjects in the experimental groups performed a resistance circuit training program consisting of traditional exercises (TRT, n = 10 or exercises executed in conditions of instability (using BOSU® and TRX® (IRT, n = 12. Both programs involved three days per week of training for a total of seven weeks. The following variables were determined before and after training: maximal strength (1RM, average (AV and peak velocity (PV, average (AP and peak power (PP, all during bench press (BP and back squat (BS exercises, along with squat jump (SJ height and counter movement jump (CMJ height. All variables were found to significantly improve (p <0.05 in response to both training programs. Major improvements were observed in SJ height (IRT = 22.1%, TRT = 20.1%, CMJ height (IRT = 17.7%, TRT = 15.2%, 1RM in BS (IRT = 13.03%, TRT = 12.6%, 1RM in BP (IRT = 4.7%, TRT = 4.4%, AP in BS (IRT = 10.5%, TRT = 9.3%, AP in BP (IRT = 2.4%, TRT = 8.1%, PP in BS (IRT=19.42%, TRT = 22.3%, PP in BP (IRT = 7.6%, TRT = 11.5%, AV in BS (IRT = 10.5%, TRT = 9.4%, and PV in BS (IRT = 8.6%, TRT = 4.5%. Despite such improvements no significant differences were detected in the posttraining variables recorded for the two experimental groups. These data indicate that a circuit training program using two instability training devices is as effective in untrained men as a program executed under stable conditions for improving strength (1RM, power, movement velocity and jumping ability.

  19. Training- and pilot station Churwalden: Small-scale high-pressure power plant. Lehr- und Demonstrationskraftwerk Churwalden: Hochdruckkraftwerk im Taschenformat

    Energy Technology Data Exchange (ETDEWEB)

    Foppa, C. (Nordostschweizerische Kraftwerke AG, Baden (Switzerland))

    1991-03-20

    The training and demonstration hydroelectric power plant at Churwalden, the only one of its kind, has been operated since October 1990. It is integrated in the local power supply grid; visitors are given illustrative insight into the process of hydroelectric power generation, which accounts for 60% of Switzerland's power supply. (orig.).

  20. Perfection of badminton players’ speed-power fitness with the help of training means’ variable modules

    Directory of Open Access Journals (Sweden)

    Karatnyk I.V.

    2016-06-01

    Full Text Available Purpose: to determine effectiveness of badminton players’ speed power fitness program’s perfection at stage of specialized basic training with different variants of training means modules’ combination. Material: in experiment badminton players of 15-17 years’ age (from 1st sports grade to master of sports participated. The sportsmen were divided into three experimental groups (10 persons in each. The trainings were being conducted during 24 weeks by different variants of program. Results: we created different complexes of exercises, combined in three modules (every of each lasted eight week micro-cycles. Every module has more expressed meaningful parts (1 - speed, 2 - power, 3 - jumping. All modules were combined in program of badminton players’ speed power fitness perfection. For every experimental group we worked out distinguishing variant of modules’ combination in program (first variant - 1-2-3 modules; second - 2-3-1; third - 3-1-2. General duration of program was 24 week micro-cycles. Conclusions: we recommended some variants of variable modules’ combination for badminton players’ speed-power fitness perfection. With it, we can regard total influence on the following: speed-power endurance, work with support on own body, quick movements of different body links.

  1. Attenuated Increase in Maximal Force of Rat Medial Gastrocnemius Muscle after Concurrent Peak Power and Endurance Training

    Science.gov (United States)

    Furrer, Regula; Jaspers, Richard T.; Baggerman, Hein L.; Bravenboer, Nathalie; Lips, Paul; de Haan, Arnold

    2013-01-01

    Improvement of muscle peak power and oxidative capacity are generally presumed to be mutually exclusive. However, this may not be valid by using fibre type-specific recruitment. Since rat medial gastrocnemius muscle (GM) is composed of high and low oxidative compartments which are recruited task specifically, we hypothesised that the adaptive responses to peak power training were unaffected by additional endurance training. Thirty rats were subjected to either no training (control), peak power training (PT), or both peak power and endurance training (PET), which was performed on a treadmill 5 days per week for 6 weeks. Maximal running velocity increased 13.5% throughout the training and was similar in both training groups. Only after PT, GM maximal force was 10% higher than that of the control group. In the low oxidative compartment, mRNA levels of myostatin and MuRF-1 were higher after PT as compared to those of control and PET groups, respectively. Phospho-S6 ribosomal protein levels remained unchanged, suggesting that the elevated myostatin levels after PT did not inhibit mTOR signalling. In conclusion, even by using task-specific recruitment of the compartmentalized rat GM, additional endurance training interfered with the adaptive response of peak power training and attenuated the increase in maximal force after power training. PMID:23509812

  2. Attenuated Increase in Maximal Force of Rat Medial Gastrocnemius Muscle after Concurrent Peak Power and Endurance Training

    Directory of Open Access Journals (Sweden)

    Regula Furrer

    2013-01-01

    Full Text Available Improvement of muscle peak power and oxidative capacity are generally presumed to be mutually exclusive. However, this may not be valid by using fibre type-specific recruitment. Since rat medial gastrocnemius muscle (GM is composed of high and low oxidative compartments which are recruited task specifically, we hypothesised that the adaptive responses to peak power training were unaffected by additional endurance training. Thirty rats were subjected to either no training (control, peak power training (PT, or both peak power and endurance training (PET, which was performed on a treadmill 5 days per week for 6 weeks. Maximal running velocity increased 13.5% throughout the training and was similar in both training groups. Only after PT, GM maximal force was 10% higher than that of the control group. In the low oxidative compartment, mRNA levels of myostatin and MuRF-1 were higher after PT as compared to those of control and PET groups, respectively. Phospho-S6 ribosomal protein levels remained unchanged, suggesting that the elevated myostatin levels after PT did not inhibit mTOR signalling. In conclusion, even by using task-specific recruitment of the compartmentalized rat GM, additional endurance training interfered with the adaptive response of peak power training and attenuated the increase in maximal force after power training.

  3. Effect of one- vs. two-stair climb training on sprint power.

    Science.gov (United States)

    Harris, Kenten B; Brown, Lee E; Statler, Traci A; Noffal, Guillermo J; Bartolini, J Albert

    2014-11-01

    Although running stairs is often used in sport conditioning programs, at present, little research has examined the effect of stair climb training on sprint power. The purpose of this study was to investigate the effects of running stairs either 1 stair (1S) or 2 stairs (2S) at a time on power. Fourteen male college track and field athletes were randomized into 3 groups; 1S, 2S, or control (C). All groups were pre- and posttested for 1S, 2S, and 40-m sprint split times. The 1S and 2S groups trained twice per week, for 4 weeks, performing 10 sets of climbing 68 total stairs with 2.5-minute rest between trials. The greatest power values (W) from pre- and poststairs and sprint splits were used for statistical analyses. There was a significant (p climb. The 1S group increased power for the 1S test (pre-1,492.89 ± 123.76; post-1,647.41 ± 73.65) with no change in the 2S test (pre-2,428.80 ± 414.81; post-2,430.32 ± 154.90), whereas the 2S group increased power for the 2S test (pre-2,343.73 ± 317.50; post-2,646.17 ± 305.43) with no change in the 1S test (pre-1,516.69 ± 210.64; post-1,529.38 ± 236.69). The C group showed no change in either stair test (1S: pre-1,403.35 ± 238.67, post-1,384.38 ± 153.32; 2S: pre-2,285.93 ± 345.03, post-2,261.85 ± 356.88). There were no significant interactions or main effects for any sprint split power (40 m: pre-5,337.13 ± 611.86, post-5,318.68 ± 586.24).Therefore, stair climb training either 1 or 2 at a time did not affect 40-m sprint split power but increased power for the specific stair training type. Coaches should choose the number of stairs that are similar in time and power output to sprint training.

  4. Effects of physical exercise training in DNA damage and repair - could the difference be in hOGG1 Ser326Cys polymorphism?

    Directory of Open Access Journals (Sweden)

    Ana Inês Silva

    2015-05-01

    The aim of this study was to investigate the possible influence of hOGG1 Ser326Cys polymorphism on DNA damage and repair activity in response to 16 weeks of combined physical exercise training, in thirty healthy Caucasian men. Comet assay was carried out using peripheral blood lymphocytes and enabled the evaluation of DNA damage, both strand breaks and FPG-sensitive sites, and DNA repair activity. Genotypes were determined by PCR-RFLP analysis. The subjects with Ser/Ser genotype were considered as wild-type group (n=20, Ser/Cys and Cys/Cys genotype were analyzed together as mutant group (n=10. Regarding differences between pre and post-training in the wild-type group, the results showed a significant decrease in DNA strand breaks (DNA SBs (p=0.002 and also in FPG-sensitive sites (p=0.017. No significant differences were observed in weight (p=0.389 and in lipid peroxidation (MDA (p=0.102. A significant increase in total antioxidant capacity (evaluated by ABTS was observed (p=0.010. Regarding mutant group, the results showed a significant decrease in DNA SBs (p=0.008 and in weight (p=0.028. No significant differences were observed in FPG-sensitive sites (p=0.916, in ABTS (p=0.074 and in MDA (p=0.086. No significant changes in DNA repair activity were observed in both genotype groups. This preliminary study suggests the possibility of different responses in DNA damage to physical exercise training, considering the hOGG1 Ser326Cys polymorphism.

  5. Simulation of the PEM fuel cell hybrid power train of an automated guided vehicle and comparison with experimental results

    NARCIS (Netherlands)

    Bram Veenhuizen; J.C.N. Bosma

    2009-01-01

    At HAN University research has been started into the development of a PEM fuel cell hybrid power train to be used in an automated guided vehicle. For this purpose a test facility is used with the possibility to test all important functional aspects of a PEM fuel cell hybrid power train. In this

  6. Simulation of the PEM fuel cell hybrid power train of an automated guided vehicle and comparison with experimental results

    NARCIS (Netherlands)

    Veenhuizen, Bram; Bosma, J.C.N.

    2009-01-01

    At HAN University research has been started into the development of a PEM fuel cell hybrid power train to be used in an automated guided vehicle. For this purpose a test facility is used with the possibility to test all important functional aspects of a PEM fuel cell hybrid power train. In this pape

  7. How Competency-Based Training Locks the Working Class out of Powerful Knowledge: A Modified Bernsteinian Analysis

    Science.gov (United States)

    Wheelahan, Leesa

    2007-01-01

    This paper argues that competency-based training in vocational education and training in Australia is one mechanism through which the working class is denied access to powerful knowledge represented by the academic disciplines. The paper presents a modified Bernsteinian analysis to argue that vocational education and training students need access…

  8. EFFECTS OF HIGH INTENSITY TRAINING BY HEART RATE OR POWER IN RECREATIONAL CYCLISTS

    Directory of Open Access Journals (Sweden)

    Michael E. Robinson

    2011-09-01

    Full Text Available Technological advances in interval training for cyclists have led to the development of both heart rate (HR monitors and powermeters (PM. Despite the growing popularity of PM use, the superiority of PM-based training has not been established. The aim of the present study was to investigate the relative effectiveness of HR-based versus PM-based interval training on 20 km time trial (20km TT, lactate threshold (LT power, and peak aerobic capacity (VO2max in recreational cyclists. Participants (n =20; M age=33.9, SD =13 completed a baseline 20km TT to establish their VO2max and LT and were then randomly assigned to either HR-determined or PM-determined training sessions. Over a period of up to 5 weeks participants completed 7.2 (± 1.1 interval training sessions at their specific LT for their respective interval training method. Repeated measures analyses of variances (ANOVAs showed that both HR-based and PM-based training groups significantly improved their LT power (F(1,16 = 28., p < 0.01, eta2 = 0.63 and 20km TT time (F(1,16 = 4.92, p = 0.04, eta2 = 0.24 at posttest, showing a 17 watt increase (9.8% and a near 3-and-a-half minute improvement (7.8% in 20km TT completion time. There were no significant group (HR vs. PM x time (baseline vs. posttest interactions for 20km TT completion time, LT power, or VO2max ratings. Our results coincide with the literature supporting the effectiveness of interval training for endurance athletes. Furthermore, our findings indicate that there is no empirical evidence for the superiority of any single type of device in the implementation of interval training. This study indicates that there are no noticeable advantages to using PM to increase performance in the average recreational cyclist, suggesting that low cost HR monitor are equally capable as training devices

  9. Explore the Power Transformer Maintenance and Repair Technology%探究电力变压器的维护与检修技术

    Institute of Scientific and Technical Information of China (English)

    张东旭

    2014-01-01

    介绍了电力变压器的常规维护内容和检修方法,以期为电力工作人员的维护、检修作业提供参考。%This paper introduces a method for regular maintenance and repair of power transformers content, in order to provide a reference for maintenance of electrical workers, maintenance jobs.

  10. Peak Power Demand and Energy Consumption Reduction Strategies for Trains under Moving Block Signalling System

    Directory of Open Access Journals (Sweden)

    Qing Gu

    2013-01-01

    Full Text Available In the moving block signalling (MBS system where the tracking target point of the following train is moving forward with its leading train, overload of the substations occurs when a dense queue of trains starts (or restarts in very close distance interval. This is the peak power demand problem. Several methods have been attempted in the literature to deal with this problem through changing train’s operation strategies. However, most existing approaches reduce the service quality. In this paper, two novel approaches—“Service Headway Braking” (SHB and “Extending Stopping Distance Interval” (ESDI—are proposed according to available and unavailable extra station dwell times, respectively. In these two methods, the restarting times of the trains are staggered and traction periods are reduced, which lead to the reduction of peak power demand and energy consumption. Energy efficient control switching points are seen as the decision parameters. Nonlinear programming method is used to model the process. Simulation results indicate that, compared with ARL, peak power demands are reduced by 40% and 20% by applying SHB and ESDI without any arrival time delay, respectively. At the same time, energy consumptions are also reduced by 77% and 50% by applying SHB and ESDI, respectively.

  11. Exposure to ultrafine particles and black carbon in diesel-powered commuter trains

    Science.gov (United States)

    Jeong, Cheol-Heon; Traub, Alison; Evans, Greg J.

    2017-04-01

    Ultrafine particle (UFP), black carbon (BC) and lung deposited surface area (LDSA) concentrations measured during 43 trips on diesel-powered commuter trains revealed elevated exposures under some conditions. When the passenger coaches were pulled by a locomotive, the geometric mean concentrations of UFP, LDSA, and BC were 18, 10, and 6 times higher than the exposure levels when the locomotive pushed the coaches, respectively. In addition, UFP, LDSA, and BC concentrations in pull-trains were 5, 3, and 4 times higher than concentrations measured while walking on city sidewalks, respectively. Exposure to these pollutants was most elevated in the coach located closest to the locomotive: geometric means were 126,000 # cm-3 for UFP, 249 μm2 cm-3 for LDSA, and 17,800 ng m-3 of BC; these concentrations are much higher than those previously reported for other modes of public transportation. Markedly high levels of diesel exhaust are present in passenger trains powered by diesel locomotives operated in pull-mode. Thus, it is recommended that immediate steps be taken to evaluate, and where needed, mitigate exposure in diesel-powered passenger trains, both commuter and inter-city.

  12. A training method for locomotion mode prediction using powered lower limb prostheses.

    Science.gov (United States)

    Young, Aaron J; Simon, Ann M; Hargrove, Levi J

    2014-05-01

    Recently developed lower-limb prostheses are capable of actuating the knee and ankle joints, allowing amputees to perform advanced locomotion modes such as step-over-step stair ascent and walking on sloped surfaces. However, transitions between these locomotion modes and walking are neither automatic nor seamless. This study describes methods for construction and training of a high-level intent recognition system for a lower-limb prosthesis that provides natural transitions between walking, stair ascent, stair descent, ramp ascent, and ramp descent. Using mechanical sensors onboard a powered prosthesis, we collected steady-state and transition data from six transfemoral amputees while the five locomotion modes were performed. An intent recognition system built using only mechanical sensor data was 84.5% accurate using only steady-state training data. Including training data collected while amputees performed seamless transitions between locomotion modes improved the overall accuracy rate to 93.9%. Training using a single analysis window at heel contact and toe off provided higher recognition accuracy than training with multiple analysis windows. This study demonstrates the capability of an intent recognition system to provide automatic, natural, and seamless transitions between five locomotion modes for transfemoral amputees using powered lower limb prostheses.

  13. Low-load Slow Movement Squat Training Increases Muscle Size and Strength but Not Power.

    Science.gov (United States)

    Usui, S; Maeo, S; Tayashiki, K; Nakatani, M; Kanehisa, H

    2016-04-01

    We tested a hypothesis that low-load squat training with slow movement and tonic force generation (LST) would increase muscle size and strength but not necessarily power. Healthy young men were assigned to LST [50% one-repetition maximum (1-RM) load, 3 s for lowering/lifting without pause: n=9] or low-load normal speed (LN: 50% 1-RM load, 1 s for lowering/lifting with 1-s pause; n=7) groups. Both groups underwent an 8-week squat training program (10 repetitions/set, 3 sets/day, and 3 days/week) using the assigned methods. Before and after the intervention, quadriceps femoris muscle thickness, maximal torque during isometric hip extension and knee extension, 1-RM squat, lifting power from squatting position and rate of electromyography rise (RER) in knee extensors during the task, leg extension power and vertical jump height were measured. After the intervention, the LN group showed no changes in all the variables. The LST group significantly (Pmuscle thickness (6-10%), isometric hip extension torque (18%) and 1-RM squat (10%), but not isometric knee extension torque, lifting power and RER, leg extension power and vertical jump height. These results suggest that LST can increase muscle size and task-related strength, but has little effect on power production during dynamic explosive movements.

  14. Transplantation of low-power laser-irradiated olfactory ensheathing cells to promote repair of spinal cord injury in rats

    Institute of Scientific and Technical Information of China (English)

    Haoxian Chen; Xinfeng Zheng; Weibin Sheng; Qin Wei; Tao Jiang; Gele Jin

    2009-01-01

    BACKGROUND: Previous studies have demonstrated that low-power laser (LPL) irradiation can promote the regeneration of peripheral nerves and central nerves, as well as influence cellular proliferation. Therefore, it is thought to be a potential treatment for spinal cord injury.OBJECTIVE: Utilizing histological observations and behavioral evaluations, the aim of this study was to investigate the influence of transplanted olfactory ensheathing cells (OECs), irradiated by LPL, on functional repair of rats following transversal spinal cord injury.DESIGN, TIME AND SETTING: A randomized, controlled, animal experiment was performed at the animal experimental center in the First Affiliated Hospital of Xinjiang Medical University between January 2007 and February 2008.MATERIALS: A total of 52 Sprague Dawley rats were included in this experiment. Twelve rats were used to harvest OECs, some of which were irradiated by LPL on days 3, 5, and 7 in culture.The remaining 40 rats were used to establish T12 complete spinal cord transection injury.DMEM/F12 medium was purchased from Sigma, USA, Fluorogold was provided by Chemicon,USA, and the LY/JG650-D500-16 low-power laser was produced by Xi'an Lingyue Electromechanical Science And Technology Co., Ltd., China.METHODS: The successful rat models were randomly divided into three groups: OEC transplantation, LPL-irradiated OEC transplantation, and control. These animals were microinjected with OEC suspension, LPL-irradiated OEC suspension, and DMEM/F12 medium(10 μL) respectively 4 weeks after spinal cord was completely transected at the T12 level.MAIN OUTCOME MEASURES: Spinal cord injury was observed using hematoxylin-eosin staining.Expression of nerve growth factor receptor p75 and glial fibrillary acidic protein were determined using immunohistochemical staining. Regeneration of spinal nerve fibers in rats was assayed by Fluorogold retrograde labeling method. Basso, Beattie and Bresnahan (BBB) scores were used to evaluate motor

  15. Enhancing quality of life in older adults: A comparison of muscular strength and power training

    Directory of Open Access Journals (Sweden)

    Marsh Anthony P

    2008-06-01

    Full Text Available Abstract Background Although progressive resistance strength training (ST has been found to improve various measures of physical functioning in older adults, the benefit to quality of life is unclear. Additionally, recent evidence suggests that high velocity power training (PT may be more beneficial for physical functioning than ST, but it is not known whether this type of training impacts quality of life. The purpose of this study was to compare changes in multiple measures of quality of life resulting from ST vs. PT in older adults. A no exercise group was also included as control comparison condition. Methods Forty-five older adults (M age = 74.8 years; SD = 5.7 were randomly assigned to either a PT, b ST, or c control group (no exercise. Measures of self-efficacy (SE, satisfaction with physical function (SPF, and the Satisfaction with Life Scale (SWL were assessed at baseline and following training. The resistance training conditions met 3 times per week for 12 weeks at an intensity of 70% 1 repetition maximum. Results A series of ANCOVA's comparing between group differences in change and controlling for baseline values revealed significant group differences in all three measures: SE (F(2,31 = 9.77; p (2,32 = 3.36; p = .047; SWL (F(2,31 = 4.76; p = .016. Follow up analyses indicated that the PT group reported significantly more change in SE, SPF, and SWL than the control group whereas the ST group reported greater change than the control group only in SE. Conclusion These pilot data indicate that high velocity power training may influence multiple levels of quality of life over and above the benefits gained through traditional strength training.

  16. Effect of abdominal bracing training on strength and power of trunk and lower limb muscles.

    Science.gov (United States)

    Tayashiki, Kota; Maeo, Sumiaki; Usui, Seiji; Miyamoto, Naokazu; Kanehisa, Hiroaki

    2016-09-01

    It is unknown whether maximal voluntary co-contraction of abdominal muscles, called abdominal bracing, can be a training maneuver for improving strength and power of trunk and lower limb muscles. The present study aimed to elucidate this. Twenty young adult men (23.3 ± 1.8 years) were allocated to training (TG, n = 11) or control (CG, n = 9) group. TG conducted an 8-week training program (3 days/week) consisting of 2-s maximal abdominal bracing followed by 2-s muscle relaxation (5 × 10 repetitions/day). Maximal voluntary isometric strength during trunk flexion and extension, hip extension, and knee extension, maximal lifting power from sitting position, and the thicknesses of abdominal muscles were measured before and after the intervention. In addition, surface electromyograms from trunk and lower limb muscles and intra-abdominal pressure (IAP) during the maximal abdominal bracing and maximal lifting tasks were also determined. After the intervention, TG showed significant increases in isometric trunk extension (+14.4 %) and hip extension (+34.7 %) strength and maximal lifting power (+15.6 %), while CG did not show any changes in strength and power variables. Furthermore, TG had significant gains in the muscle thickness of the oblique internal (+22.4 %), maximal IAP during abdominal bracing (+36.8 %), and the rate of IAP rise during lifting task (+58.8 %), without corresponding changes in CG. The current study indicates that a training style with maximal voluntary co-contraction of abdominal muscles can be an effective maneuver for increasing strength and power during movements involving trunk and hip extensions, without using external load.

  17. Evaluation of training programs and entry-level qualifications for nuclear-power-plant control-room personnel based on the systems approach to training

    Energy Technology Data Exchange (ETDEWEB)

    Haas, P M; Selby, D L; Hanley, M J; Mercer, R T

    1983-09-01

    This report summarizes results of research sponsored by the US Nuclear Regulatory Commission (NRC) Office of Nuclear Regulatory Research to initiate the use of the Systems Approach to Training in the evaluation of training programs and entry level qualifications for nuclear power plant (NPP) personnel. Variables (performance shaping factors) of potential importance to personnel selection and training are identified, and research to more rigorously define an operationally useful taxonomy of those variables is recommended. A high-level model of the Systems Approach to Training for use in the nuclear industry, which could serve as a model for NRC evaluation of industry programs, is presented. The model is consistent with current publically stated NRC policy, with the approach being followed by the Institute for Nuclear Power Operations, and with current training technology. Checklists to be used by NRC evaluators to assess training programs for NPP control-room personnel are proposed which are based on this model.

  18. 供电急修故障分析系统应用研究%Application Study on Power Supply Urgent Repair Failure Analysis System

    Institute of Scientific and Technical Information of China (English)

    何坚

    2014-01-01

    供电急修故障分析系统对历史急修数据进行提取整合,并利用配电网生产管理系统的设备台账数据、营销系统的低压用户数据,对95598接报停电事件发生的故障情况作出科学的分析,为急修作业人员进行抢修工作和答复用户复电时间提供有效依据。该系统由停电判断、故障字典查询、分类汇总查询、历史故障台区查询四大功能模块组成,主要完成故障类型、故障原因、解决方式、平均复电时间等功能,能更准确合理地判断故障和解决故障。供电急修故障分析系统为供电企业建立起一套实用、科学、快速的故障决策系统。%The power supply urgent repair failure analysis system is used for extracting and integrating historical urgent repair data and making scientific analysis on power cut failures reported by 95598 according to equipment standing book data of production management system of power distribution network and low voltage customer data of marketing system which is a-ble to provide efficient basis for operating personnel to carry on urgent repairs and reply customers power recovery time.This system is consisted of four function modules including power cut predication,failure dictionary inquiry,classification collec-tion inquiry and historical failure district inquiry.It is mainly applied for finishing functions of failure types,failure reasons, solutions and average power recovery time which may more correctly and reasonably judge and solve failures.The power sup-ply urgent repair failure analysis system is useful to establish a set of practical,scientific and rapid failure decision system for power supply enterprises.

  19. Maximal power output estimates the MLSS before and after aerobic training

    Directory of Open Access Journals (Sweden)

    Carolina Franco Wilke

    2014-06-01

    Full Text Available The purpose of this study is to present an equation to predict the maximal lactate steady state (MLSS through a VO2peak incremental protocol. Twenty-six physically active men were divided in two groups (G1 and G2. They performed one maximal incremental test to determine their VO2peak and maximal power output (Wpeak, and also several constant intensity tests to determine MLSS intensity (MLSSw on a cycle ergometer. Group G2 underwent six weeks of aerobic training at MLSSw. A regression equation was created using G1 subjects Wpeak and MLSSw to estimate the MLSS intensity (MLSSweq before and after training for G2 (MLSSweq = 0.866 x Wpeak-41.734. The mean values were not different (150±27W vs 148±27W, before training / 171±26W vs 177±24W, after training and significant correlations were found between the measured and the estimated MLSSw before (r²=0.49 and after training (r²=0.62 in G2. The proposed equation was effective to estimate the MLSS intensity before and after aerobic training.

  20. Joint-Angle Specific Strength Adaptations Influence Improvements in Power in Highly Trained Athletes

    Directory of Open Access Journals (Sweden)

    Rhea Matthew R.

    2016-03-01

    Full Text Available Purpose. The purpose of this study was to examine the influence of training at different ranges of motion during the squat exercise on joint-angle specific strength adaptations. Methods. Twenty eight men were randomly assigned to one of three training groups, differing only in the depth of squats (quarter squat, half squat, and full squat performed in 16-week training intervention. Strength measures were conducted in the back squat pre-, mid-, and post-training at all three depths. Vertical jump and 40-yard sprint time were also measured. Results. Individuals in the quarter and full squat training groups improved significantly more at the specific depth at which they trained when compared to the other two groups (p < 0.05. Jump height and sprint speed improved in all groups (p < 0.05; however, the quarter squat had the greatest transfer to both outcomes. Conclusions. Consistently including quarter squats in workouts aimed at maximizing speed and jumping power can result in greater improvements.

  1. High power THz source based on coherent radiation of picosecond relativistic electron bunch train

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Tunable and compact high power terahertz (THz) radiation based on coherent radiation (CR) of the picosecond relativistic electron bunch train is under development at the Tsinghua accelerator lab. Coherent synchronization radiation (CSR) and coherent transition radiation (CTR) are researched based on an S-band compact electron linac, a bending magnet or a thin foil. The bunch train’s form factors, which are the key factor of THz radiation, are analyzed by the PARMELA simulation. The effects of electron bunch trains under different conditions, such as the bunch number, bunch charges, micro-pulses inter-distance, and accelerating gradient of the gun are investigated separately in this paper. The optimal radiated THz power and spectra should take these factors as a whole into account.

  2. Muscle Strength, Power, and Morphologic Adaptations After 6 Weeks of Compound vs. Complex Training in Healthy Men.

    Science.gov (United States)

    Stasinaki, Angeliki-Nikoletta; Gloumis, Giorgos; Spengos, Konstantinos; Blazevich, Anthony J; Zaras, Nikolaos; Georgiadis, Giorgos; Karampatsos, Giorgos; Terzis, Gerasimos

    2015-09-01

    The aim of the study was to compare the effects of compound vs. complex resistance training on strength, high-speed movement performance, and muscle composition. Eighteen young men completed compound (strength and power sessions on alternate days) or complex training (strength and power sets within a single session) 3 times per week for 6 weeks using bench press, leg press, Smith machine box squat, and jumping exercises. Pre- and posttraining, jumping and throwing performance and maximum bench press, leg press, and Smith machine box squat strength were evaluated. The architecture of vastus lateralis and gastrocnemius muscle was assessed using ultrasound imaging. Vastus lateralis morphology was assessed from muscle biopsies. Jumping (4 ± 3%) and throwing (9 ± 8%) performance increased only with compound training (p power training on alternate days is more effective for enhancing lower-limb and whole-body power, whereas training on the same day may induce greater increases in strength and fiber hypertrophy.

  3. Hybrid power train for light commercial vehicles; Hybridantriebsstrang fuer leichte Nutzfahrzeuge

    Energy Technology Data Exchange (ETDEWEB)

    Somschor, B.; Buchhold, O. (ZF Friedrichshafen AG, Friedrichshafen)

    2007-07-01

    Light commercial vehicles are a rapidly growing vehicle segment. These vehicles are used for several purposes e.g. supply of different goods, construction areas, special applications. A high number of vehicles are used in cities or in urban arena with a high density of traffic and typical environmental polluting. In the meantime legislation in several industrialized countries around the world have the target to protect environment, e.g., Euro 4 or 5 regulations or Japan 10. In parallel the automotive industries (ACEA) in Europe has given a self obligation to reduce the CO{sub 2} emission until 2008 to a value of 140 g/km. A lot of activities are started by automotive industry and there suppliers in the past to meet these requirements. Beside already well known development activities like weight optimisation, lower driving and air resistance or improved diesel engine the hybrid power train, a combination of electric motor generator and combustion engine seems to be in the future an imported solution to meet these requirements in the future. Several possibilities to realize a hybrid power train for these applications is shown including the possibilities ZF have to show a hybrid power train for these types of applications. Advantages and disadvantages of the several possibilities are discussed from different point of view. The needed basic functions of a hybrid power train are discussed and system is recommended to use for these types of applications. A simulation model is shown and described including the realisation and results for different driving cycles. The influence on fuel consumption and emissions divided by functions are shown. A solution optimised for light commercial application is shown. Further more first results based on practical experiences are described. (orig.)

  4. Interval Running Training Improves Cognitive Flexibility and Aerobic Power of Young Healthy Adults.

    Science.gov (United States)

    Venckunas, Tomas; Snieckus, Audrius; Trinkunas, Eugenijus; Baranauskiene, Neringa; Solianik, Rima; Juodsnukis, Antanas; Streckis, Vytautas; Kamandulis, Sigitas

    2016-08-01

    Venckunas, T, Snieckus, A, Trinkunas, E, Baranauskiene, N, Solianik, R, Juodsnukis, A, Streckis, V, and Kamandulis, S. Interval running training improves cognitive flexibility and aerobic power of young healthy adults. J Strength Cond Res 30(8): 2114-2121, 2016-The benefits of regular physical exercise may well extend beyond the reduction of chronic diseases risk and augmentation of working capacity, to many other aspects of human well-being, including improved cognitive functioning. Although the effects of moderate intensity continuous training on cognitive performance are relatively well studied, the benefits of interval training have not been investigated in this respect so far. The aim of the current study was to assess whether 7 weeks of interval running training is effective at improving both aerobic fitness and cognitive performance. For this purpose, 8 young dinghy sailors (6 boys and 2 girls) completed the interval running program with 200 m and 2,000 m running performance, cycling maximal oxygen uptake, and cognitive function was measured before and after the intervention. The control group consisted of healthy age-matched subjects (8 boys and 2 girls) who continued their active lifestyle and were tested in the same way as the experimental group, but did not complete any regular training. In the experimental group, 200 m and 2,000 m running performance and cycling maximal oxygen uptake increased together with improved results on cognitive flexibility tasks. No changes in the results of short-term and working memory tasks were observed in the experimental group, and no changes in any of the measured indices were evident in the controls. In conclusion, 7 weeks of interval running training improved running performance and cycling aerobic power, and were sufficient to improve the ability to adjust behavior to changing demands in young active individuals.

  5. Course Outline for Lesson Plans for Pre-Employment Laboratory Training in CVAE-VEH Farm and Ranch Mechanical Repair.

    Science.gov (United States)

    Texas A and M Univ., College Station. Vocational Instructional Services.

    This packet contains 88 lesson plans for a laboratory course in farm and ranch mechanical repair. The lesson plans are organized into six units covering the following topics: occupational information, construction and maintenance (safety, farm carpentry, farm water supply and sanitation, farm electricity, concrete), hot metal work (oxyacetylene…

  6. Changes in bar path kinematics and kinetics through use of summary feedback in power snatch training.

    Science.gov (United States)

    Winchester, Jason B; Porter, Jared M; McBride, Jeffrey M

    2009-03-01

    This study investigated kinematic and kinetic variable changes in the power snatch (PS) after 4 weeks of training and the use of summary feedback. Twenty-four collegiate football players participated as subjects in this study. The subjects were pretested for their 1-repetition maximum (1RM) and were separated into feedback (FG; n = 12) and control (CG; n = 12) groups. The FG was provided with augmented feedback (AF) during power snatch training sessions, which took place 3 times per week for 4 weeks. The AF is defined as information that is received in addition to what is naturally available. Variables measured include peak force (PF), peak power (PP), and several kinematic variables at 50, 70, and 90% of the subjects' pre-1RM. The PF was improved at 50% 1RM from 567 +/- 202 to 769 +/- 230 N, at 70% from 725 +/- 186 to 890 +/- 199 N, and at 90% from 822 +/- 197 to 1008 +/- 201 N in the FG (p training and AF. Practitioners wishing to improve weightlifting performance should attempt to use evidence-based AF.

  7. Research on the power failure-repair integrated decision-making system in the electric power network%电网故障抢修一体化调度决策系统设计及应用

    Institute of Scientific and Technical Information of China (English)

    郑刚

    2015-01-01

    In light of solve the problems of the poor data ex-change ability, and the data island which causes the low efficiency in95598, MIS, GIS, SCADA and FTU systems in power supply en-terprise, in accordance with the index requirements, the fault-re-pair integrated decision-making system coupling with 95598, MIS and GIS system has been established. Cooperation with the electric power marketing and distribution data exchange and share, comb-ing the 2D/3D GIS spatial data and GPS vehicle positioning infor-mation, the conventional"passive repair"model has been instead by"active repair"mode, which can realize the dynamic visualiza-tion during the power fault-repair whole process and reduce the fault-repair time to improve the power supply reliability and the customer service level.%针对供电企业现有95598、MIS、GIS、SCADA和FTU等系统间数据交互共享能力差、出现"数据孤岛"、数据利用效率较低等问题,按照电网智能抢修指标要求,建立集95598、MIS和GIS等系统耦合为一体的故障抢修调度决策系统.在供电企业营配协同数据共享的基础上,结合二维/三维GIS地理空间数据和GPS车载定位信息,以"主动抢修"模式代替常规"被动抢修",实现抢修全过程的动态可视化决策和调度管理,缩短故障抢修时间,提升供电可靠性和客户服务水平.

  8. Effects of a resistance training program and subsequent detraining on muscle strength and muscle power in multiple sclerosis patients.

    Science.gov (United States)

    Medina-Perez, Carlos; de Souza-Teixeira, Fernanda; Fernandez-Gonzalo, Rodrigo; de Paz-Fernandez, Jose Antonio

    2014-01-01

    Although resistance training adaptations in multiple sclerosis (MS) patients have been described, the detraining response in this population is largely unknown. [corrected] This study was designed to evaluate the effects of a 12-week detraining period on muscle strength (isometric and endurance) and muscle power of multiple sclerosis (MS) patients that had previously carried out a 12-week resistance training program (RTP). Forty-two MS patients were randomly assigned into two groups: an exercise group (EG) that performed a 12-week RTP for the knee extensors muscles; and a control group (CG), that did not perform any specific training. Knee extension maximal voluntary isometric contraction (MVIC), muscle power and muscle endurance were evaluated before and after the RTP, as well as 12 weeks after training completion. A strain gauge was used to measure the maximal voluntary isometric contraction and muscle power was assessed with a linear encoder. Muscle endurance was interpreted as the number of repetitions that a patient could perform in a single set of knee extension exercise. The EG increased MVIC and muscle power after the training period, although the training did not affect muscle endurance. After 12 weeks of detraining, MVIC returned to pre-training values but muscle power was still greater than pre-training values in the EG. The CG did not present any change in the variables measured during the intervention. A 12-week RTP improved MVIC and muscle power in MS patients. Additionally, 12 weeks of detraining blunted strength training adaptations in MS patients, although muscle power training adaptations were still evident after the detraining period.

  9. A New Powerful Method for Site-Specific Transgene Stabilization Based on Chromosomal Double-Strand Break Repair

    Science.gov (United States)

    Kravchuk, Oksana; Savitsky, Mikhail

    2011-01-01

    Transgenic insects are a promising tool in sterile insect techniques and population replacement strategies. Such transgenic insects can be created using nonautonomous transposons, which cannot be transferred without a transposase source. In biocontrol procedures where large numbers of insects are released, there is increased risk of transgene remobilization caused by external transposase sources that can alter the characteristics of the transgenic organisms lead horizontal transgene transfer to other species. Here we describe a novel, effective method for transgene stabilization based on the introduction of directed double-strand breaks (DSB) into a genome-integrated sequence and their subsequent repair by the single-strand annealing (SSA) pathway. Due to the construct's organization, the repair pathway is predictable, such that all transposon and marker sequences can be deleted, while preserving integration of exogenous DNA in the genome. The exceptional conservation of DNA repair pathways makes this method suitable for a broad range of organisms. PMID:22022613

  10. A new powerful method for site-specific transgene stabilization based on chromosomal double-strand break repair.

    Directory of Open Access Journals (Sweden)

    Artem Tkachuk

    Full Text Available Transgenic insects are a promising tool in sterile insect techniques and population replacement strategies. Such transgenic insects can be created using nonautonomous transposons, which cannot be transferred without a transposase source. In biocontrol procedures where large numbers of insects are released, there is increased risk of transgene remobilization caused by external transposase sources that can alter the characteristics of the transgenic organisms lead horizontal transgene transfer to other species. Here we describe a novel, effective method for transgene stabilization based on the introduction of directed double-strand breaks (DSB into a genome-integrated sequence and their subsequent repair by the single-strand annealing (SSA pathway. Due to the construct's organization, the repair pathway is predictable, such that all transposon and marker sequences can be deleted, while preserving integration of exogenous DNA in the genome. The exceptional conservation of DNA repair pathways makes this method suitable for a broad range of organisms.

  11. The influence of isometric preload on power expressed during bench press in strength-trained men.

    Science.gov (United States)

    Bartolomei, Sandro; Fukuda, David H; Hoffman, Jay R; Stout, Jeffrey R; Merni, Franco

    2017-03-01

    The purpose of this study was to compare the power expressed during the bench press exercise in resistance-trained men following different pre-activation conditions. Twenty-two trained men (age 24.1 ± 1.7 years, height 178.6 ± 6.1 cm, body mass 81.1 ± 10.6 kg) completed a maximal effort bench press (1-RM) test (100.0 kg ± 8.1 kg). In a subsequent assessment, each participant performed concentric bench press movements with loads of 20%, 30%, 40% and 50% of their 1-RM preceded by either a concentric contraction (CC), a low isometric preload (LIP; 70% 1-RM) or a high isometric preload (HIP; 100% 1-RM) conditions. All movements were performed in a Smith machine with a settable quick-release device. Participants performed all three conditions in randomized fashion. Results indicated that power outputs during the bench press exercise following HIP were significantly (p < 0.05) greater than CC at 20% 1-RM (+9%), 30% 1-RM (+16%) and 40% 1-RM (+14%), and LIP at 20% 1-RM (+4%), 30% 1-RM (+20%) and 40% 1-RM (+15%). No differences were found between conditions at 50% 1-RM. Area under the force-power curve with HIP was greater (p < 0.05) than with CC and LIP. In conclusion, results of this study indicate that the use of a HIP (100% 1-RM) in trained participants results in significantly greater power output during the concentric phase of a multi-joint exercise when compared to standard concentric movement.

  12. The effects of a maximal power training cycle on the strength, maximum power, vertical jump height and acceleration of high-level 400-meter hurdlers.

    Science.gov (United States)

    Balsalobre-Fernández, Carlos; Tejero-González, Carlos M; Del Campo-Vecino, Juan; Alonso-Curiel, Dionisio

    2013-03-01

    The aim of this study was to determine the effects of a power training cycle on maximum strength, maximum power, vertical jump height and acceleration in seven high-level 400-meter hurdlers subjected to a specific training program twice a week for 10 weeks. Each training session consisted of five sets of eight jump-squats with the load at which each athlete produced his maximum power. The repetition maximum in the half squat position (RM), maximum power in the jump-squat (W), a squat jump (SJ), countermovement jump (CSJ), and a 30-meter sprint from a standing position were measured before and after the training program using an accelerometer, an infra-red platform and photo-cells. The results indicated the following statistically significant improvements: a 7.9% increase in RM (Z=-2.03, p=0.021, δc=0.39), a 2.3% improvement in SJ (Z=-1.69, p=0.045, δc=0.29), a 1.43% decrease in the 30-meter sprint (Z=-1.70, p=0.044, δc=0.12), and, where maximum power was produced, a change in the RM percentage from 56 to 62% (Z=-1.75, p=0.039, δc=0.54). As such, it can be concluded that strength training with a maximum power load is an effective means of increasing strength and acceleration in high-level hurdlers.

  13. Effects of Traditional Versus Horizontal Inertial Flywheel Power Training on Common Sport-Related Tasks

    Directory of Open Access Journals (Sweden)

    de Hoyo Moisés

    2015-09-01

    Full Text Available This study aimed to analyze the effects of power training using traditional vertical resistance exercises versus direction specific horizontal inertial flywheel training on performance in common sport-related tasks. Twenty-three healthy and physically active males (age: 22.29 ± 2.45 years volunteered to participate in this study. Participants were allocated into either the traditional training (TT group where the half squat exercise on a smith machine was applied or the horizontal flywheel training (HFT group performing the front step exercise with an inertial flywheel. Training volume and intensity were matched between groups by repetitions (5-8 sets with 8 repetitions and relative intensity (the load that maximized power (Pmax over the period of six weeks. Speed (10 m and 20 m, countermovement jump height (CMJH, 20 m change of direction ability (COD and strength during a maximal voluntary isometric contraction (MVIC were assessed before and after the training program. The differences between groups and by time were assessed using a two-way analysis of variance with repeated measures, followed by paired t-tests. A significant group by time interaction (p=0.004 was found in the TT group demonstrating a significantly higher CMJH. Within-group analysis revealed statistically significant improvements in a 10 m sprint (TT: −0.17 0.27 s vs. HFT: −0.11 0.10 s, CMJH (TT: 4.92 2.58 cm vs. HFT: 1.55 2.44 cm and MVIC (TT: 62.87 79.71 N vs. HFT: 106.56 121.63 N in both groups (p < 0.05. However, significant differences only occurred in the 20 m sprint time in the TT group (−0.04 0.12 s; p = 0.04. In conclusion, the results suggest that TT at the maximal peak power load is more effective than HFT for counter movement jump height while both TT and HFT elicited significant improvements in 10 m sprint performance while only TT significantly improved 20 m sprint performance.

  14. Effects of Traditional Versus Horizontal Inertial Flywheel Power Training on Common Sport-Related Tasks

    Science.gov (United States)

    de Hoyo, Moisés; Sañudo, Borja; Carrasco, Luis; Domínguez-Cobo, Sergio; Mateo-Cortes, Jesús; Cadenas-Sánchez, María Monserrat; Nimphius, Sophia

    2015-01-01

    This study aimed to analyze the effects of power training using traditional vertical resistance exercises versus direction specific horizontal inertial flywheel training on performance in common sport-related tasks. Twenty-three healthy and physically active males (age: 22.29 ± 2.45 years) volunteered to participate in this study. Participants were allocated into either the traditional training (TT) group where the half squat exercise on a smith machine was applied or the horizontal flywheel training (HFT) group performing the front step exercise with an inertial flywheel. Training volume and intensity were matched between groups by repetitions (5–8 sets with 8 repetitions) and relative intensity (the load that maximized power (Pmax)) over the period of six weeks. Speed (10 m and 20 m), countermovement jump height (CMJH), 20 m change of direction ability (COD) and strength during a maximal voluntary isometric contraction (MVIC) were assessed before and after the training program. The differences between groups and by time were assessed using a two-way analysis of variance with repeated measures, followed by paired t-tests. A significant group by time interaction (p=0.004) was found in the TT group demonstrating a significantly higher CMJH. Within-group analysis revealed statistically significant improvements in a 10 m sprint (TT: −0.17 0.27 s vs. HFT: −0.11 0.10 s), CMJH (TT: 4.92 2.58 cm vs. HFT: 1.55 2.44 cm) and MVIC (TT: 62.87 79.71 N vs. HFT: 106.56 121.63 N) in both groups (p < 0.05). However, significant differences only occurred in the 20 m sprint time in the TT group (−0.04 0.12 s; p = 0.04). In conclusion, the results suggest that TT at the maximal peak power load is more effective than HFT for counter movement jump height while both TT and HFT elicited significant improvements in 10 m sprint performance while only TT significantly improved 20 m sprint performance. PMID:26557200

  15. Concurrent neuromechanical and functional gains following upper-extremity power training post-stroke

    Directory of Open Access Journals (Sweden)

    Patten Carolynn

    2013-01-01

    Full Text Available Abstract Background Repetitive task practice is argued to drive neural plasticity following stroke. However, current evidence reveals that hemiparetic weakness impairs the capacity to perform, and practice, movements appropriately. Here we investigated how power training (i.e., high-intensity, dynamic resistance training affects recovery of upper-extremity motor function post-stroke. We hypothesized that power training, as a component of upper-extremity rehabilitation, would promote greater functional gains than functional task practice without deleterious consequences. Method Nineteen chronic hemiparetic individuals were studied using a crossover design. All participants received both functional task practice (FTP and HYBRID (combined FTP and power training in random order. Blinded evaluations performed at baseline, following each intervention block and 6-months post-intervention included: Wolf Motor Function Test (WMFT-FAS, Primary Outcome, upper-extremity Fugl-Meyer Motor Assessment, Ashworth Scale, and Functional Independence Measure. Neuromechanical function was evaluated using isometric and dynamic joint torques and concurrent agonist EMG. Biceps stretch reflex responses were evaluated using passive elbow stretches ranging from 60 to 180º/s and determining: EMG onset position threshold, burst duration, burst intensity and passive torque at each speed. Results Primary outcome: Improvements in WMFT-FAS were significantly greater following HYBRID vs. FTP (p = .049, regardless of treatment order. These functional improvements were retained 6-months post-intervention (p = .03. Secondary outcomes: A greater proportion of participants achieved minimally important differences (MID following HYBRID vs. FTP (p = .03. MIDs were retained 6-months post-intervention. Ashworth scores were unchanged (p > .05. Increased maximal isometric joint torque, agonist EMG and peak power were significantly greater following HYBRID vs. FTP (p p

  16. Moderate intensity, but not high intensity, treadmill exercise training alters power output properties in myocardium from aged rats.

    Science.gov (United States)

    Chung, Eunhee; Diffee, Gary M

    2012-11-01

    Aging is characterized by a progressive decline in cardiac function, but endurance exercise training has been shown to retard a number of deleterious effects of aging. However, underlying mechanisms by which exercise training improves age-related decrements in myocardial contractile function are not well understood. The purpose of this study was to determine the effects of exercise training on power output properties in permeablized (skinned) myocytes of old rats. Thirty-month-old rats were divided into sedentary control (C) and groups undergoing 11 weeks of treadmill exercise training at moderate intensity (MI) and at high intensity (HI). Peak power output normalized to maximal force was significantly increased in MI but not in HI compared to C with significant increases in atrial myosin light chain 1 in ventricle. These results suggest that MI exercise training is beneficial as a significant increase was seen in the ability of the myocardium to do work, but this effect was not seen with HI training.

  17. Efeitos bioestimulantes do laser de baixa potência no processo de reparo Biostimulation effects of low-power laser in the repair process

    Directory of Open Access Journals (Sweden)

    Ruthinéia Diógenes Alves Uchôa Lins

    2010-12-01

    Full Text Available Os lasers de baixa potência promovem efeitos biológicos benéficos, de caráter analgésico, antiinflamatório e cicatrizante, por meio de um fenômeno de bioestimulação. A radiação emitida pelo laser terapêutico afeta os processos metabólicos das células-alvo, produzindo efeitos bioestimulantes que resultam na ocorrência de eventos celulares e vasculares, os quais parecem interferir diretamente no processo de reparo. Este trabalho visa estudar o fenômeno da bioestimulação e destacar os principais efeitos bioestimulantes do laser de baixa potência na reparação tecidual.The wound healing process has always been an excellent subject for researchers. The use of low-power laser on wounds during the postoperative phase has increased the speed of the healing process. It has been implied that low power radiation affects cellular metabolic processes and promotes beneficial biological effects (analgesic, anti-inflammatory, and healing. Laser biostimulation appears to influence the behavior of the repair process. This paper aims at reviewing the most interesting aspects of the use of low-power laser in the tissue-repair process.

  18. Experience of high-nitrogenous steel powder application in repairs and surface hardening of responsible parts for power equipment by plasma spraying

    Science.gov (United States)

    Kolpakov, A. S.; Kardonina, N. I.

    2016-02-01

    The questions of the application of novel diffusion-alloying high-nitrogenous steel powders for repair and surface hardening of responsible parts of power equipment by plasma spraying are considered. The appropriateness of the method for operative repair of equipment and increasing its service life is justified. General data on the structure, properties, and manufacture of nitrogen-, aluminum-, and chromium-containing steel powders that are economically alloyed using diffusion are described. It is noted that the nitrogen release during the decomposition of iron nitrides, when heating, protects the powder particles from oxidation in the plasma jet. It is shown that the coating retains 50% of nitrogen that is contained in the powder. Plasma spraying modes for diffusion-alloying high-nitrogenous steel powders are given. The service properties of plasma coatings based on these powders are analyzed. It is shown that the high-nitrogenous steel powders to a nitrogen content of 8.9 wt % provide the necessary wear resistance and hardness of the coating and the strength of its adhesion to the substrate and corrosion resistance to typical aggressive media. It is noted that increasing the coating porosity promotes stress relaxation and increases its thickness being limited with respect to delamination conditions in comparison with dense coatings on retention of the low defectiveness of the interface and high adhesion to the substrate. The examples of the application of high-nitrogenous steel powders in power engineering during equipment repairs by service companies and overhaul subdivisions of heat power plants are given. It is noted that the plasma spraying of diffusion-alloyed high-nitrogenous steel powders is a unique opportunity to restore nitrided steel products.

  19. Operator training for the Yacyreta binational hydroelectric power plant; Formacion de operadores para la Central Hidroelectrica de Yacireta

    Energy Technology Data Exchange (ETDEWEB)

    Dure, Francisco; Tachella, Heriberto [Entidad Binacional Yacyreta, Isla Yacireta (Paraguay). Central Hidroelectrica Yacyreta]. E-mail: yacyreta@internet.siscotel.com

    1998-07-01

    This work is oriented to the power plant operators, by exposing the criteria and methods adopted for operators selection, training and incorporation to the Yacyreta Hydroelectric Power Plant. The used criteria considered some aspects, as follows: the operation staff should be consisted of equal numbers of Argentine and Paraguayan nationalities, viewing the both systems operation; experience of the shift supervisors in operating a plant for a minimum of 10 years; the supervisors should participate training the auxiliary operators.

  20. Advanced virtual energy simulation training and research: IGCC with CO2 capture power plant

    Energy Technology Data Exchange (ETDEWEB)

    Zitney, S.; Liese, E.; Mahapatra, P.; Bhattacharyya, D.; Provost, G.

    2011-01-01

    In this presentation, we highlight the deployment of a real-time dynamic simulator of an integrated gasification combined cycle (IGCC) power plant with CO{sub 2} capture at the Department of Energy's (DOE) National Energy Technology Laboratory's (NETL) Advanced Virtual Energy Simulation Training and Research (AVESTARTM) Center. The Center was established as part of the DOE's accelerating initiative to advance new clean coal technology for power generation. IGCC systems are an attractive technology option, generating low-cost electricity by converting coal and/or other fuels into a clean synthesis gas mixture in a process that is efficient and environmentally superior to conventional power plants. The IGCC dynamic simulator builds on, and reaches beyond, conventional power plant simulators to merge, for the first time, a 'gasification with CO{sub 2} capture' process simulator with a 'combined-cycle' power simulator. Fueled with coal, petroleum coke, and/or biomass, the gasification island of the simulated IGCC plant consists of two oxygen-blown, downward-fired, entrained-flow, slagging gasifiers with radiant syngas coolers and two-stage sour shift reactors, followed by a dual-stage acid gas removal process for CO{sub 2} capture. The combined cycle island consists of two F-class gas turbines, steam turbine, and a heat recovery steam generator with three-pressure levels. The dynamic simulator can be used for normal base-load operation, as well as plant start-up and shut down. The real-time dynamic simulator also responds satisfactorily to process disturbances, feedstock blending and switchovers, fluctuations in ambient conditions, and power demand load shedding. In addition, the full-scope simulator handles a wide range of abnormal situations, including equipment malfunctions and failures, together with changes initiated through actions from plant field operators. By providing a comprehensive IGCC operator training system, the

  1. Pulsed low-level infrared laser alters mRNA levels from muscle repair genes dependent on power output in Wistar rats

    Science.gov (United States)

    Trajano, L. A. S. N.; Trajano, E. T. L.; Thomé, A. M. C.; Sergio, L. P. S.; Mencalha, A. L.; Stumbo, A. C.; Fonseca, A. S.

    2017-10-01

    Satellite cells are present in skeletal muscle functioning in the repair and regeneration of muscle injury. Activation of these cells depends on the expression of myogenic factor 5 (Myf5), myogenic determination factor 1(MyoD), myogenic regulatory factor 4 (MRF4), myogenin (MyoG), paired box transcription factors 3 (Pax3), and 7 (Pax7). Low-level laser irradiation accelerates the repair of muscle injuries. However, data from the expression of myogenic factors have been controversial. Furthermore, the effects of different laser beam powers on the repair of muscle injuries have been not evaluated. The aim of this study was to evaluate the effects of low-level infrared laser at different powers and in pulsed emission mode on the expression of myogenic regulatory factors and on Pax3 and Pax7 in injured skeletal muscle from Wistar rats. Animals that underwent cryoinjury were divided into three groups: injury, injury laser 25 Mw, and injury laser 75 mW. Low-level infrared laser irradiation (904 nm, 3 J cm‑2, 5 kHz) was carried out at 25 and 75 mW. After euthanasia, skeletal muscle samples were withdrawn and the total RNA was extracted for the evaluation of mRNA levels from the MyoD, MyoG, MRF4, Myf5, Pax3, and Pax7 gene. Pax 7 mRNA levels did not alter, but Pax3 mRNA levels increased in the injured and laser-irradiated group at 25 mW. MyoD, MyoG, and MYf5 mRNA levels increased in the injured and laser-irradiated animals at both powers, and MRF4 mRNA levels decreased in the injured and laser-irradiated group at 75 mW. In conclusion, exposure to pulsed low-level infrared laser, by power-dependent effect, could accelerate the muscle repair process altering mRNA levels from paired box transcription factors and myogenic regulatory factors.

  2. Component Repair Times Obtained from MSPI Data

    Energy Technology Data Exchange (ETDEWEB)

    Eide, Steven A. [Curtiss-Wright/Scietech, Ketchum, ID (United States); Cadwallader, Lee [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-05-01

    Information concerning times to repair or restore equipment to service given a failure is valuable to probabilistic risk assessments (PRAs). Examples of such uses in modern PRAs include estimation of the probability of failing to restore a failed component within a specified time period (typically tied to recovering a mitigating system before core damage occurs at nuclear power plants) and the determination of mission times for support system initiating event (SSIE) fault tree models. Information on equipment repair or restoration times applicable to PRA modeling is limited and dated for U.S. commercial nuclear power plants. However, the Mitigating Systems Performance Index (MSPI) program covering all U.S. commercial nuclear power plants provides up-to-date information on restoration times for a limited set of component types. This paper describes the MSPI program data available and analyzes the data to obtain median and mean component restoration times as well as non-restoration cumulative probability curves. The MSPI program provides guidance for monitoring both planned and unplanned outages of trains of selected mitigating systems deemed important to safety. For systems included within the MSPI program, plants monitor both train UA and component unreliability (UR) against baseline values. If the combined system UA and UR increases sufficiently above established baseline results (converted to an estimated change in core damage frequency or CDF), a “white” (or worse) indicator is generated for that system. That in turn results in increased oversight by the US Nuclear Regulatory Commission (NRC) and can impact a plant’s insurance rating. Therefore, there is pressure to return MSPI program components to service as soon as possible after a failure occurs. Three sets of unplanned outages might be used to determine the component repair durations desired in this article: all unplanned outages for the train type that includes the component of interest, only

  3. FC vehicle hybridisation: an affordable solution for an energy-efficient FC powered drive train

    Science.gov (United States)

    Pede, G.; Iacobazzi, A.; Passerini, S.; Bobbio, A.; Botto, G.

    Fuel cells (FCs) have potential as clean and efficient energy sources for automotive applications without sacrifice in performance or driving range. However, the complete FC system must operate as efficiently as possible over the range of driving conditions that may be encountered while maintaining a low cost. To achieve this target, a storage unit can be introduced in the FC system to reduce the size of the fuel cell that is the most expensive component. This "hybrid" concept would not only reduce the drive train total cost but it also allow the recover of the braking energy and the operation at the voltage-current point of maximum efficiency for the FC system. Pro-and-cons of the "full-power" versus the "hybrid" configuration are shown in this work. The "Hybridisation rate" or "Hybridisation degree", a parameter expressed by the relationship between two installed powers, the generation power and the traction power, is also introduced and it is demonstrated that for each category of hybrid vehicles there is an optimal value of hybridisation degree. The storage systems considered are based on high power batteries or ultra capacitors (UCs) or a combination of them. A preliminary design of a sport utility vehicle (SUV) using a combined storage system and a FC energy source (called Triple Hybrid), is proposed. Finally, the experience of the Italian industry in this field is also reviewed.

  4. The Effects of Cold Water Immersion after Rugby Training on Muscle Power and Biochemical Markers

    Directory of Open Access Journals (Sweden)

    Masaki Takeda

    2014-09-01

    Full Text Available During rugby game, or intensive rugby training there are many high intensity explosive exercises and eccentric muscle contractions, therefore adequate recovery is very important to rugby players. In the present study we have tested the effects of cold water immersion (CWI after game-simulated (80 min. rugby training on muscle power recovery and blood markers of muscle damage. Twenty well-trained collegiate male rugby players (age: 20.3 ± 0.6 years old, body height: 1.74 ± 0.05 m, body weight: 85.4 ± 2.0 kg, body fat: 18.2 ± 1.4 % volunteered for this study. This study was conducted as a cross-over design; i.e., the subjects were randomly assigned either to CWI (n = 10 or passive rest condition (n = 10 for the 1st trial and 1 week later the subjects were switched conditions for the 2nd trial. After the simulated rugby training, including tackles and body contacts, muscle functional ability and blood markers of muscle damage were tested immediately, after CWI or passive rest, and again 24 hours later. Statistical analysis of all muscle functional tests (10 m dash, counter movement jump, reaction time, side steps except for 10 seconds maximal pedaling power and blood makers of muscle damage (aspartate aminotransferase, lactate dehydrogenase, creatine kinase, and creatinine revealed significant main effects for time (p < 0.05. However, no statistically significant interactions were found in any of the muscle functional tests and blood markers between groups and time courses. Our results suggest that a rugby game induces muscle damage and reduces muscle function. However, CWI has no significant restorative effect after an 80-minute rugby game in terms of muscle damage.

  5. LQR-Based Power Train Control Method Design for Fuel Cell Hybrid Vehicle

    Directory of Open Access Journals (Sweden)

    Yun Haitao

    2013-01-01

    Full Text Available Based on the mathematical model of fuel cell hybrid vehicle (FCHV proposed in our previous study, a multistate feedback control strategy of the hybrid power train is designed based on the linear quadratic regulator (LQR algorithm. A Kalman Filter (KF observer is introduced to estimate state of charge (SOC of the battery firstly, and then a linear quadratic regulator is constructed to compute the state feedback gain matrix of the closed-loop control system. At last, simulation and actual test are utilized to demonstrate this new approach.

  6. Maximal power output estimates the MLSS before and after aerobic training

    OpenAIRE

    Carolina Franco Wilke; Guilherme Passos Ramos; André Maia Lima; Christian Emmanuel Torres Cabido; Cristiano Lino Monteiro de Barros; Thiago Teixeira Mendes; Emerson Silami Garcia

    2014-01-01

    The purpose of this study is to present an equation to predict the maximal lactate steady state (MLSS) through a VO2peak incremental protocol. Twenty-six physically active men were divided in two groups (G1 and G2). They performed one maximal incremental test to determine their VO2peak and maximal power output (Wpeak), and also several constant intensity tests to determine MLSS intensity (MLSSw) on a cycle ergometer. Group G2 underwent six weeks of aerobic training at MLSSw. A regression equa...

  7. High Intensity Interval Training Leads to Greater Improvements in Acute Heart Rate Recovery and Anaerobic Power as High Volume Low Intensity Training

    Directory of Open Access Journals (Sweden)

    Thomas L. Stöggl

    2017-08-01

    Full Text Available The purpose of the current study was to explore if training regimes utilizing diverse training intensity distributions result in different responses on neuromuscular status, anaerobic capacity/power and acute heart rate recovery (HRR in well-trained endurance athletes.Methods: Thirty-six male (n = 33 and female (n = 3 runners, cyclists, triathletes and cross-country skiers [peak oxygen uptake: (VO2peak: 61.9 ± 8.0 mL·kg−1·min−1] were randomly assigned to one of three groups (blocked high intensity interval training HIIT; polarized training POL; high volume low intensity oriented control group CG/HVLIT applying no HIIT. A maximal anaerobic running/cycling test (MART/MACT was performed prior to and following a 9-week training period.Results: Only the HIIT group achieved improvements in peak power/velocity (+6.4%, P < 0.001 and peak lactate (P = 0.001 during the MART/MACT, while, unexpectedly, in none of the groups the performance at the established lactate concentrations (4, 6, 10 mmol·L−1 was changed (P > 0.05. Acute HRR was improved in HIIT (11.2%, P = 0.002 and POL (7.9%, P = 0.023 with no change in the HVLIT oriented control group.Conclusion: Only a training regime that includes a significant amount of HIIT improves the neuromuscular status, anaerobic power and the acute HRR in well-trained endurance athletes. A training regime that followed more a low and moderate intensity oriented model (CG/HVLIT had no effect on any performance or HRR outcomes.

  8. Features of influence of different modes of training on the dynamics of power performance bodybuilders on stage-specialized basic training

    Directory of Open Access Journals (Sweden)

    Slavityak O.S.

    2015-02-01

    Full Text Available Purpose : study the effect of various features on the structure and orientation of exercise routines on the level of development of force capabilities bodybuilders on stage specialized basic training. Material : studies participated 60 athletes (age 18-19 years, the experience of training - 5 years. The study used a method of determining the index of the training load for the power sports. Level security features athletes determined by control testing. Control of the studied parameters was carried out for 4 months training at intervals of 1 month. Results : it was found that under conditions similar level of fitness athletes and structure your workout performance power load and the nature of their changes depend on the particular mode of training (in this study - from the application of the basic sequence variative and isolation exercises. Conclusions : the use of pilot training in integrated mode with alternating motor activity using the basic priority and isolation exercises for no more than 2 microcycles have the most significant positive impact on the increase in power performance parameters of athletes (on average by 26.5% p <0.05

  9. The effect of a complex training and detraining programme on selected strength and power variables in early pubertal boys.

    Science.gov (United States)

    Ingle, Lee; Sleap, Mike; Tolfrey, Keith

    2006-09-01

    Complex training, a combination of resistance training and plyometrics is growing in popularity, despite limited support for its efficacy. In pre- and early pubertal children, the study of complex training has been limited, and to our knowledge an examination of its effect on anaerobic performance characteristics of the upper and lower body has not been undertaken. Furthermore, the effect of detraining after complex training requires clarification. The physical characteristics (mean+/-s) of the 54 male participants in the present study were as follows: age 12.3 +/- 0.3 years, height 1.57 +/- 0.07 m, body mass 50.3 +/- 11.0 kg. Participants were randomly assigned to an experimental (n = 33) or control group (n = 21). The training, which was performed three times a week for 12 weeks, included a combination of dynamic constant external resistance and plyometrics. After training, participants completed 12 weeks of detraining. At baseline, after training and after detraining, peak and mean anaerobic power, dynamic strength and athletic performance were assessed. Twenty-six participants completed the training and none reported any training-related injury. Complex training was associated with small increases ( 0.05). In the experimental group, dynamic strength was increased by 24.3 - 71.4% (dependent on muscle group; P 0.05). For 40-m sprint running, basketball chest pass and vertical jump test performance, the experimental group saw a small improvement ( 0.05). In conclusion, in pre- and early pubertal boys, upper and lower body complex training is a time-effective and safe training modality that confers small improvements in anaerobic power and jumping, throwing and sprinting performance, and marked improvements in dynamic strength. However, after detraining, the benefits of complex training are lost at similar rates to other training modalities.

  10. The effect of ephedra and caffeine on maximal strength and power in resistance-trained athletes.

    Science.gov (United States)

    Williams, Andrew D; Cribb, Paul J; Cooke, Matthew B; Hayes, Alan

    2008-03-01

    Caffeine and ephedrine-related alkaloids recently have been removed from International Olympic Committee banned substances lists, whereas ephedrine itself is now permissible at urinary concentrations less than 10 mug.mL. The changes to the list may contribute to an increased use of caffeine and ephedra as ergogenic aids by athletes. Consequently, we sought to investigate the effects of ingesting caffeine (C) or a combination of ephedra and caffeine (C + E) on muscular strength and anaerobic power using a double-blind, crossover design. Forty-five minutes after ingesting a glucose placebo (P: 300 mg), C (300 mg) or C + E (300 mg + 60 mg), 9 resistance-trained male participants were tested for maximal strength by bench press [BP; 1 repetition maximum (1RM)] and latissimus dorsi pull down (LP; 1RM). Subjects also performed repeated repetitions at 80% of 1RM on both BP and LP until exhaustion. After this test, subjects underwent a 30-second Wingate test to determine peak anaerobic cycling power, mean power, and fatigue index. Although subjects reported increased alertness and enhanced mood after supplementation with caffeine and ephedra, there were no significant differences between any of the treatments in muscle strength, muscle endurance, or peak anaerobic power. Our results do not support the contention that supplementation with ephedra or caffeine will enhance either muscle strength or anaerobic exercise performance.

  11. Performance test results for the Eaton dc development power train in an electric test bed vehicle

    Science.gov (United States)

    Crumley, R. L.; Donaldson, M. R.

    1987-09-01

    This report presents the results of the tests performed on a direct current (dc) power train in a test bed vehicle developed by the Eaton Corporation for the U.S. Department of Energy (DOE). The tests were performed by EG and G Idaho, Inc. at the Idaho National Engineering Laboratory (INEL). The purpose of the INEL testing was to provide test results from which an evaluation of the performance capabilities of the Eaton dc power train could be made and compared with other vehicle propulsion systems. The planned tests were primarily oriented toward road testing, chassis dynamometer testing, and associated dynamometer coastdown tests for road loss determination. Range tests of the Eaton dc test bed vehicle using an ALCO 2200 lead acid battery pack, produced ranges of 97 km at 56 km/h (60 miles at 35 mph), 79 km at 72 km/h (49 miles at 45 mph), and 47 km at 88 km/h (29 miles at 55 mph). The corresponding net dc energy consumptions are 135 Wh/km (217 Wh/mile), 145 Wh/km (233 Wh/mile), and 178 Wh/km (287 Wh/mile). The energy consumption for the D-cycle test was 241 Wh/km (387 Wh/mile).

  12. Effects of strength and power training on neuromuscular variables in older adults.

    Science.gov (United States)

    Wallerstein, Lilian França; Tricoli, Valmor; Barroso, Renato; Rodacki A, L F; Russo, Luciano; Aihara, André Yui; da Rocha Correa Fernandes, Artur; de Mello, Marco Tulio; Ugrinowitsch, Carlos

    2012-04-01

    The purpose of this study was to compare the neuromuscular adaptations produced by strength-training (ST) and power-training (PT) regimens in older individuals. Participants were balanced by quadriceps cross-sectional area (CSA) and leg-press 1-repetition maximum and randomly assigned to an ST group (n = 14; 63.6 ± 4.0 yr, 79.7 ± 17.2 kg, and 163.9 ± 9.8 cm), a PT group (n = 16; 64.9 ± 3.9 yr, 63.9 ± 11.9 kg, and 157.4 ± 7.7 cm), or a control group (n = 13; 63.0 ± 4.0 yr, 67.2 ± 10.8 kg, and 159.8 ± 6.8 cm). ST and PT were equally effective in increasing (a) maximum dynamic and isometric strength (p < .05), (b) increasing quadriceps muscle CSA (p < .05), and (c) decreasing electrical mechanical delay of the vastus lateralis muscle (p < .05). There were no significant changes in neuromuscular activation after training. The novel finding of the current study is that PT seems to be an attractive alternative to regular ST to maintain and improve muscle mass.

  13. A Full Scope Nuclear Power Plant Training Simulator: Design and Implementation Experiences

    Directory of Open Access Journals (Sweden)

    Pedro A. Corcuera

    2003-06-01

    Full Text Available This paper describes the development of a full scope training simulator for a Spanish nuclear power plant. The simulator is based on a client/server architecture that allows the distributed execution in a network with many users to participate in the same simulation. The interface was designed to support the interaction of the operators with the simulator through virtual panels supported by touch screens with high fidelity graphic displays. The simulation environment is described including the extension added to facilitate an easy operation by instructors. The graphical interface has been developed using component software technology. The appropriate selection of hardware for visualization and interaction, in terms of cost and performance, resulted in a facility much less expensive than the classic hard panels replica simulators and, at the same time, able to fulfill most of the training requirements. The main features of the simulator are the distributed execution control of the models and the flexibility of design and maintenance of the interface. The benefits of virtual panels approach are the automatic switch reposition and tagging, configuration flexibility, low maintenance requirements, or capability to support multiple users distributed across the corporate intranet. After exhaustive validation and testing, the training sessions are being conducted successfully.

  14. PENGARUH SIRKUIT TRAINING AWAL AKHIR LATIHAN TEKNIK TERHADAP KARDIORESPIRASI, POWER, SMASH, PASSING BAWAH ATLET BOLA VOLI

    Directory of Open Access Journals (Sweden)

    Hendri Permana

    2013-04-01

    Abstract This study aims to find out the effects of training circuit exercise at the beginning and the end of technical exercises on the cardiorespiration ability, power, and smash and underhand passing skills of the male volleyball athletes of Yuso club, Sleman. This was an experimental study using the pretest-posttest group design. The research population consisted of male volleyball athletes of Yuso Club, Sleman. The sample consisted of 20 athletes selected by ordinal pairing, and 2 groups were selected each of which was involved to measure the cardiorespiration ability (VO2 max using the multistage. The power test used the vertical jump test, the smash skill used the Stanley test, and the underhand passing skill used the Brumbach forearms pass Wall Volley Test. The data were analized using the t-test to find out the data structure in the high dimesion because of the involvement of more than one variable. The results show that the VO2 max variable of group 1 can increase the cardiorespiration ability of 5.21 % or 2.24 litres of the oxygen volume. Group 2 increase 2.64 or 1.15 litres. The variable power or vertical jump variable in group 1 is about 66.20, increasing about 0.8 cm or 1.21 % becoming 67.00; in group 2 it is about 69.50 cm increasing about 3.60 cm or 5.18 % becoming 73.10 cm. The variable smash in group 1 is about  27.50 times, increasing about 0.20 or 0.73 % becoming 27.70 times. In group 2 it is  27.20 times increasing about 5.8 or 31.32 % becoming 33 times. The underhand passing variable in group 1 is  49.70  times increasing about 0.30 or 0.60 % becoming 50.00 times. In group 2 it is 50.40 times increasing about 2.0 or 3.97 % becoming 52.40 times. Based on the results, it can be concluded that group II whose do circuit training exercises at the end of exercises are better than group I that do circuit training exercises at the beginning of technical exercises. Keywords: circuit training exercise, technical exercise, cardiorespiration

  15. Improved Walking Capacity and Muscle Strength After Functional Power-Training in Young Children With Cerebral Palsy.

    Science.gov (United States)

    van Vulpen, Liesbeth F; de Groot, Sonja; Rameckers, Eugene; Becher, Jules G; Dallmeijer, Annet J

    2017-09-01

    Strength training programs for children with cerebral palsy (CP) showed inconclusive evidence for improving walking, despite improvements in strength. Recent studies have suggested that strength training with high movement velocity is more effective for improving walking than traditional resistance training. The purpose of this study was to evaluate the effect of functional high-velocity resistance training (power-training) to improve muscle strength and walking capacity of children with CP. Twenty-two children with spastic CP participated (13 bilateral, Gross Motor Function Classification System [GMFCS] level I [n = 10] and II [n = 12], 7.5 years [SD 1.8, range 4-10 years]). Within-subjects changes in a 14-weeks usual care period were compared with changes in a 14-week functional power-training period (in groups, 3×/wk). Outcome measures were the muscle power sprint test (MPST), 1-minute walk test (1MWT), 10-m shuttle run test (SRT), gross motor function (GMFM-66), isometric strength of lower-limb muscles and dynamic ankle plantar flexor strength. Changes during the training period were significantly larger than changes in the usual care period for all outcome measures ( P training period for walking capacity (ΔMPST [mean]: 27.6 W [95%CI 15.84-39.46, 83% increase], Δ1MWT: 9.4 m [95% CI 4.17-14.68, 13%], ΔSRT: 4.2 [95%CI 2.57-5.83, 56%], ΔGMFM-66: 5.5 [95% CI 3.33-7.74, 7%]) and muscle strength (18%-128%), while outcomes remained stable in the usual care period. The results indicate that functional power-training is an effective training for improving walking capacity in young children with cerebral palsy.

  16. Multiple phonetically trained-listener comparisons of speech before and after articulatory intervention in two children with repaired submucous cleft palate.

    Science.gov (United States)

    Roxburgh, Zoe; Cleland, Joanne; Scobbie, James M

    2016-01-01

    Cleft Palate (CP) assessments based on phonetic transcription are the "gold standard" therapy outcome measure, despite reliability difficulties. Here we propose a novel perceptual evaluation, applied to ultrasound-visual biofeedback (U-VBF) therapy and therapy using visual articulatory models (VAMs) for two children with repaired submucous CP. Three comparisons were made: post VAM, post U-VBF and overall pre- and post-therapy. Twenty-two phonetically-trained listeners were asked to determine whether pre- or post-therapy recordings sounded "closer to the English target", using their own implicit phonological knowledge (prompted via orthographic representation). Results are compared with segment-oriented percent target consonant correct (PTCC) derived from phonetic transcriptions. Listener judgements and PTCC suggest that both children made improvements using both VAM and U-VBF. Statistical analysis showed listener agreement in each comparison, though agreement was weak. However, perceptual evaluation offers a straightforward method of evaluating the effectiveness of interventions and can be used by phonetically trained or lay listeners.

  17. Strength and power training did not modify cardiovascular responses to aerobic exercise in elderly subjects

    Directory of Open Access Journals (Sweden)

    H. Kanegusuku

    2011-09-01

    Full Text Available Resistance training increases muscle strength in older adults, decreasing the effort necessary for executing physical tasks, and reducing cardiovascular load during exercise. This hypothesis has been confirmed during strength-based activities, but not during aerobic-based activities. This study determined whether different resistance training regimens, strength training (ST, constant movement velocity or power training (PT, concentric phase performed as fast as possible can blunt the increase in cardiovascular load during an aerobic stimulus. Older adults (63.9 ± 0.7 years were randomly allocated to: control (N = 11, ST (N = 13, twice a week, 70-90% 1-RM and PT (N = 15, twice a week, 30-50% 1-RM groups. Before and after 16 weeks, oxygen uptake (VO2, systolic blood pressure (SBP, heart rate (HR, and rate pressure product (RPP were measured during a maximal treadmill test. Resting SBP and RPP were similarly reduced in all groups (combined data = -5.7 ± 1.2 and -5.0 ± 1.7%, respectively, P < 0.05. Maximal SBP, HR and RPP did not change. The increase in measured VO2, HR and RPP for the increment in estimated VO2 (absolute load decreased similarly in all groups (combined data = -9.1 ± 2.6, -14.1 ± 3.9, -14.2 ± 3.0%, respectively, P < 0.05, while the increments in the cardiovascular variables for the increase in measured VO2 did not change. In elderly subjects, ST and PT did not blunt submaximal or maximal HR, SBP and RPP increases during the maximal exercise test, showing that they did not reduce cardiovascular stress during aerobic tasks.

  18. Sake Protein Supplementation Affects Exercise Performance and Biochemical Profiles in Power-Exercise-Trained Mice

    Directory of Open Access Journals (Sweden)

    Yi-Ming Chen

    2016-02-01

    Full Text Available Exercise and fitness training programs have attracted the public’s attention in recent years. Sports nutrition supplementation is an important issue in the global sports market. Purpose: In this study, we designed a power exercise training (PET program with a mouse model based on a strength and conditional training protocol for humans. We tested the effect of supplementation with functional branched-chain amino acid (BCAA-rich sake protein (SP to determine whether the supplement had a synergistic effect during PET and enhanced athletic performance and resistance to fatigue. Methods: Male ICR mice were divided into three groups (n = 8 per group for four-week treatment: sedentary controls with vehicle (SC, and PET and PET groups with SP supplementation (3.8 g/kg, PET + SP. Exercise performance was evaluated by forelimb grip strength and exhaustive swimming time as well as changes in body composition and anti-fatigue activity levels of serum lactate, ammonia, glucose, and creatine kinase (CK after a 15-min swimming exercise. The biochemical parameters were measured at the end of the experiment. Results: four-week PET significantly increased grip strength and exhaustive swimming time and decreased epididymal fat pad (EFP weight and area. Levels of aspartate aminotransferase (AST, alanine aminotransferase (ALT, creatinine, and uric acid (UA were significantly increased. PET + SP supplementation significantly decreased serum lactate, ammonia and CK levels after the 15-min swimming exercise. The resting serum levels of AST, ALT, CREA and UA were all significantly decreased with PET + SP. Conclusion: The PET program could increase the exercise performance and modulate the body composition of mice. PET with SP conferred better anti-fatigue activity, improved biochemical profiles, and may be an effective ergogenic aid in strength training.

  19. Training Persons with Spinal Cord Injury to Ambulate Using a Powered Exoskeleton.

    Science.gov (United States)

    Asselin, Pierre K; Avedissian, Manuel; Knezevic, Steven; Kornfeld, Stephen; Spungen, Ann M

    2016-06-16

    Powered exoskeletons have become available for overground ambulation in persons with paralyses due to spinal cord injury (SCI) who have intact upper extremity function and are able to maintain upright balance using forearm crutches. To ambulate in an exoskeleton, the user must acquire the ability to maintain balance while standing, sitting and appropriate weight shifting with each step. This can be a challenging task for those with deficits in sensation and proprioception in their lower extremities. This manuscript describes screening criteria and a training program developed at the James J. Peters VA Medical Center, Bronx, NY to teach users the skills needed to utilize these devices in institutional, home or community environments. Before training can begin, potential users are screened for appropriate range of motion of the hip, knee and ankle joints. Persons with SCI are at an increased risk of sustaining lower extremity fractures, even with minimal strain or trauma, therefore a bone mineral density assessment is performed to reduce the risk of fracture. Also, as part of screening, a physical examination is performed in order to identify additional health-related contraindications. Once the person has successfully passed all screening requirements, they are cleared to begin the training program. The device is properly adjusted to fit the user. A series of static and dynamic balance tasks are taught and performed by the user before learning to walk. The person is taught to ambulate in various environments ranging from indoor level surfaces to outdoors over uneven or changing surfaces. Once skilled enough to be a candidate for home use with the exoskeleton, the user is then required to designate a companion-walker who will train alongside them. Together, the pair must demonstrate the ability to perform various advanced tasks in order to be permitted to use the exoskeleton in their home/community environment.

  20. Strength and power training did not modify cardiovascular responses to aerobic exercise in elderly subjects

    Directory of Open Access Journals (Sweden)

    H. Kanegusuku

    2011-09-01

    Full Text Available Resistance training increases muscle strength in older adults, decreasing the effort necessary for executing physical tasks, and reducing cardiovascular load during exercise. This hypothesis has been confirmed during strength-based activities, but not during aerobic-based activities. This study determined whether different resistance training regimens, strength training (ST, constant movement velocity or power training (PT, concentric phase performed as fast as possible can blunt the increase in cardiovascular load during an aerobic stimulus. Older adults (63.9 ± 0.7 years were randomly allocated to: control (N = 11, ST (N = 13, twice a week, 70-90% 1-RM and PT (N = 15, twice a week, 30-50% 1-RM groups. Before and after 16 weeks, oxygen uptake (VO2, systolic blood pressure (SBP, heart rate (HR, and rate pressure product (RPP were measured during a maximal treadmill test. Resting SBP and RPP were similarly reduced in all groups (combined data = -5.7 ± 1.2 and -5.0 ± 1.7%, respectively, P < 0.05. Maximal SBP, HR and RPP did not change. The increase in measured VO2, HR and RPP for the increment in estimated VO2 (absolute load decreased similarly in all groups (combined data = -9.1 ± 2.6, -14.1 ± 3.9, -14.2 ± 3.0%, respectively, P < 0.05, while the increments in the cardiovascular variables for the increase in measured VO2 did not change. In elderly subjects, ST and PT did not blunt submaximal or maximal HR, SBP and RPP increases during the maximal exercise test, showing that they did not reduce cardiovascular stress during aerobic tasks.

  1. Training Persons with Spinal Cord Injury to Ambulate Using a Powered Exoskeleton

    Science.gov (United States)

    Asselin, Pierre K.; Avedissian, Manuel; Knezevic, Steven; Kornfeld, Stephen; Spungen, Ann M.

    2016-01-01

    Powered exoskeletons have become available for overground ambulation in persons with paralyses due to spinal cord injury (SCI) who have intact upper extremity function and are able to maintain upright balance using forearm crutches. To ambulate in an exoskeleton, the user must acquire the ability to maintain balance while standing, sitting and appropriate weight shifting with each step. This can be a challenging task for those with deficits in sensation and proprioception in their lower extremities. This manuscript describes screening criteria and a training program developed at the James J. Peters VA Medical Center, Bronx, NY to teach users the skills needed to utilize these devices in institutional, home or community environments. Before training can begin, potential users are screened for appropriate range of motion of the hip, knee and ankle joints. Persons with SCI are at an increased risk of sustaining lower extremity fractures, even with minimal strain or trauma, therefore a bone mineral density assessment is performed to reduce the risk of fracture. Also, as part of screening, a physical examination is performed in order to identify additional health-related contraindications. Once the person has successfully passed all screening requirements, they are cleared to begin the training program. The device is properly adjusted to fit the user. A series of static and dynamic balance tasks are taught and performed by the user before learning to walk. The person is taught to ambulate in various environments ranging from indoor level surfaces to outdoors over uneven or changing surfaces. Once skilled enough to be a candidate for home use with the exoskeleton, the user is then required to designate a companion-walker who will train alongside them. Together, the pair must demonstrate the ability to perform various advanced tasks in order to be permitted to use the exoskeleton in their home/community environment. PMID:27340808

  2. Role of Muscle Morphology in Jumping, Sprinting, and Throwing Performance in Participants With Different Power Training Duration Experience.

    Science.gov (United States)

    Methenitis, Spyridon K; Zaras, Nikolaos D; Spengos, Konstantinos M; Stasinaki, Angeliki-Nikoletta E; Karampatsos, Giorgos P; Georgiadis, Giorgos V; Terzis, Gerasimos D

    2016-03-01

    The aim of the study was to examine the correlation between muscle morphology and jumping, sprinting, and throwing performance in participants with different power training duration experience. Thirty-six power-trained young men were assigned to 3 groups according to the length of their power training: less experienced (muscle cross-sectional area (CSA) with anthropometry. The vastus lateralis architecture and fiber type composition were evaluated with ultrasonography and muscle biopsies, respectively. When all subjects were considered as 1 group (n = 36), jumping performance was correlated with LBM, fascicle length, and type II fiber CSA; sprinting performance was correlated with estimated thigh muscle CSA alone; and shot throwing was correlated with LBM and type I, IIA fiber CSA. In the least experienced group, the LBM of the lower extremities was the most significant contributor for power performance, whereas in the moderately experienced group, the LBM, architectural properties, and type II fiber percentage CSA were the most significant contributors. For the experienced group, fascicle length and type II fiber percentage CSA were the most significant factors for power performance. These data suggest that jumping performance is linked with muscle morphology, regardless of strength or power training. The vastus lateralis muscle morphology could only partially explain throwing performance, whereas it cannot predict sprinting performance. Power performance in experienced participants rely more on the quality of the muscle tissue rather than the quantity.

  3. Flow simulation of the Component Development Integration Facility magnetohydrodynamic power train system

    Energy Technology Data Exchange (ETDEWEB)

    Chang, S.L.; Lottes, S.A.; Bouillard, J.X.; Petrick, M.

    1997-11-01

    This report covers application of Argonne National Laboratory`s (ANL`s) computer codes to simulation and analysis of components of the magnetohydrodynamic (MHD) power train system at the Component Development and Integration Facility (CDIF). Major components of the system include a 50-MWt coal-fired, two-stage combustor and an MHD channel. The combustor, designed and built by TRW, includes a deswirl section between the first and the second-stage combustor and a converging nozzle following the second-stage combustor, which connects to the MHD channel. ANL used computer codes to simulate and analyze flow characteristics in various components of the MHD system. The first-stage swirl combustor was deemed a mature technology and, therefore, was not included in the computer simulation. Several versions of the ICOMFLO computer code were used for the deswirl section and second-stage combustor. The MGMHD code, upgraded with a slag current leakage submodel, was used for the MHD channel. Whenever possible data from the test facilities were used to aid in calibrating parameters in the computer code, to validate the computer code, or to set base-case operating conditions for computations with the computer code. Extensive sensitivity and parametric studies were done on cold-flow mixing in the second-stage combustor, reacting flow in the second-stage combustor and converging nozzle, and particle-laden flow in the deswirl zone of the first-stage combustor, the second-stage combustor, and the converging nozzle. These simulations with subsequent analysis were able to show clearly in flow patterns and various computable measures of performance a number of sensitive and problematical areas in the design of the power train. The simulations of upstream components also provided inlet parameter profiles for simulation of the MHD power generating channel. 86 figs., 18 tabs.

  4. Temporal Aspects of the V[o.sub.2] Response at the Power Output Associated with V[o.sub.2]peak in Well Trained Cyclists-Implications for Interval Training Prescription

    Science.gov (United States)

    Laursen, Paul B.; Shing, Cecilia M.; Jenkins, David G.

    2004-01-01

    The power output achieved at peak oxygen consumption (V[O.sub.2]peak) and the time this power can be maintained (i.e., Tmax) have been used in prescribing high-intensity interval training. In this context, the present study examined temporal aspects of the V[O.sub.2] response to exercise at the cycling power that output well trained cyclists…

  5. Effects of a whole body vibration training program on strength, power, and functional tests in the physically active elderly

    Directory of Open Access Journals (Sweden)

    Renata Gonçalves da Silva

    2009-04-01

    Full Text Available The aim of this study was to investigate the effect of a whole body vibration training program on knee extensor isokinetic peak torque, average power, and functional tests in the physically active elderly. Forty-seven subjects, who participated in a training program for the elderly, were recruited. The subjects were divided into two groups: whole body vibration group (WBV (n=24, 70.7±5.8 years, 62.7±12.3 kg and 155.9±8.0 cm and control group (n=23. 70.0±5.7 years, 65.3±10.7 kg and 157.9±6.6 cm. The WBS group underwent whole body vibration exercise and their regular training program for 13 weeks, 2 times per week, whereas the control group performed the regular training program only. Whole body vibration training was not effective in increasing isokinetic peak torque, average power, or performance in the functional tests. On the other hand, the regular training program was effective in increasing elbow flexor strength endurance, distance covered in the 6-min walk test, and speed in the timed up and go test. The results suggest that vibration training is not effective in modifying functionality or muscle strength and power in the physically active elderly.

  6. Naturalistic Decision Making in Power Grid Operations: Implications for Dispatcher Training and Usability Testing

    Energy Technology Data Exchange (ETDEWEB)

    Greitzer, Frank L.; Podmore, Robin

    2008-11-17

    The focus of the present study is on improved training approaches to accelerate learning and improved methods for analyzing effectiveness of tools within a high-fidelity power grid simulated environment. A theory-based model has been developed to document and understand the mental processes that an expert power system operator uses when making critical decisions. The theoretical foundation for the method is based on the concepts of situation awareness, the methods of cognitive task analysis, and the naturalistic decision making (NDM) approach of Recognition Primed Decision Making. The method has been systematically explored and refined as part of a capability demonstration of a high-fidelity real-time power system simulator under normal and emergency conditions. To examine NDM processes, we analyzed transcripts of operator-to-operator conversations during the simulated scenario to reveal and assess NDM-based performance criteria. The results of the analysis indicate that the proposed framework can be used constructively to map or assess the Situation Awareness Level of the operators at each point in the scenario. We can also identify the mental models and mental simulations that the operators employ at different points in the scenario. This report documents the method, describes elements of the model, and provides appendices that document the simulation scenario and the associated mental models used by operators in the scenario.

  7. The AGT Gene M235T Polymorphism and Response of Power-Related Variables to Aerobic Training

    Directory of Open Access Journals (Sweden)

    Zarębska Aleksandra, Jastrzębski Zbigniew, Moska Waldemar, Leońska-Duniec Agata, Kaczmarczyk Mariusz, Sawczuk Marek, Maciejewska-Skrendo Agnieszka, Żmijewski Piotr, Ficek Krzysztof, Trybek Grzegorz, Lulińska-Kuklik Ewelina, Ekaterina A. Semenova, Ildus I. Ahmetov, Cięszczyk Paweł

    2016-12-01

    Full Text Available The C allele of the M235T (rs699 polymorphism of the AGT gene correlates with higher levels of angiotensin II and has been associated with power and strength sport performance. The aim of the study was to investigate whether or not selected power-related variables and their response to a 12-week program of aerobic dance training are modulated by the AGT M235T genotype in healthy participants. Two hundred and one Polish Caucasian women aged 21 ± 1 years met the inclusion criteria and were included in the study. All women completed a 12-week program of low and high impact aerobics. Wingate peak power and total work capacity, 5 m, 10 m, and 30 m running times and jump height and jump power were determined before and after the training programme. All power-related variables improved significantly in response to aerobic dance training. We found a significant association between the M235T polymorphism and jump-based variables (squat jump (SJ height, p = 0.005; SJ power, p = 0.015; countermovement jump height, p = 0.025; average of 10 countermovement jumps with arm swing (ACMJ height, p = 0.001; ACMJ power, p = 0.035. Specifically, greater improvements were observed in the C allele carriers in comparison with TT homozygotes. In conclusion, aerobic dance, one of the most commonly practiced adult fitness activities in the world, provides sufficient training stimuli for augmenting the explosive strength necessary to increase vertical jump performance. The AGT gene M235T polymorphism seems to be not only a candidate gene variant for power/strength related phenotypes, but also a genetic marker for predicting response to training.

  8. The effects of incline and level-grade high-intensity interval treadmill training on running economy and muscle power in well-trained distance runners.

    Science.gov (United States)

    Ferley, Derek D; Osborn, Roy W; Vukovich, Matthew D

    2014-05-01

    Despite a paucity of evidence, uphill running has been touted as a sport-specific resistance-to-movement training tactic capable of enhancing metabolic, muscular, and neuromuscular processes in distance runners in ways similar to previously established resistance-to-movement training methods, such as heavy and/or explosive strength training and plyometric training. Therefore, the purpose of this investigation included documenting the effects of incline and level-grade interval treadmill training on indices of running economy (RE) (i.e., oxygen consumption [VO2] and blood lactate [BLa] responses of submaximal running) and muscle power. Thirty-two well-trained distance runners (age, 27.4 ± 3.8 years; body mass, 64.8 ± 8.9 kg; height, 173.6 ± 6.4 cm; and VO2max, 60.9 ± 8.5 ml·min(-1)·kg(-1)) received assignment to an uphill (GHill = 12), level-grade (GFlat = 12), or control (GCon = 8) group. GHill and GFlat completed 12 interval and 12 continuous run sessions over 6 weeks, whereas GCon maintained their normal training. Dependent variables measured before and after training were VO2 and BLa at 2 separate velocities associated with lactate threshold (VLT) (VO2-60% and VO2-80%; and BLa-60% and BLa-80%, respectively); percentage of VO2max at lactate threshold (%VO2max at VLT); muscle power as assessed through a horizontal 5-jump test (5Jmax); and isokinetic knee extension and flexion at 3 angular velocities (90, 180, and 300°·s(-1)). Statistical significance was set to p ≤ 0.05. All groups significantly improved 5Jmax, VO2-60%, VO2-80%, BLa-60%, and BLa-80%. Additionally, GHill and GFlat significantly improved %VO2max at VLT. Other indices of RE and muscle power did not improve. We conclude incline treadmill training effective for improving the components of RE, but insufficient as a resistance-to-movement exercise for enhancing muscle power output.

  9. Tendon repair

    Science.gov (United States)

    Repair of tendon ... Tendon repair can be performed using: Local anesthesia (the immediate area of the surgery is pain-free) ... a cut on the skin over the injured tendon. The damaged or torn ends of the tendon ...

  10. THE EFFECT OF ROPE JUMPING TRAINING OF DIFFERENT SPEEDS ON ANAEROBIC POWER

    OpenAIRE

    ŞAHİN, Gülşah

    2017-01-01

    The objective of this study was to compare the effect of rope jumpingtraining on anaerobic vertical, horizontal, mean and peak power of rope jumpingat different speeds in trained females. The study was comprised of 20 trainedfemales as the low-speed jumping group (n=10, mean age 21.4±2.3 years, body weight54.30±6.03 kg, height 161.30±6.99 cm) and the high-speed jumping group (n=10,mean age 21±1.8 years, body weight: 56.50±5.91 kg, height 163.20±7.02 cm). Thejumping speed was adjusted using a ...

  11. The relationship of maximal alactacid anaerobic power to somatotype in trained subjects.

    Science.gov (United States)

    Ergen, E; Sardella, F; Dal Monte, A

    1985-12-01

    The purpose of the present study was to investigate the relationship between somatotype components and maximal alactacid anaerobic power (MAAP) in trained subjects. The somatotype components (endomorphy: means = 2.66, S.D. = +/- 0.78; mesomorphy: means = 5.45, S.D. = +/- 1.12; ectomorphy: means = 2.46, S.D. = +/- 0.88) and total MAAP were measured in 40 male fencers (aged, means 21.79, S.D. = +/- 3.97) in order to determine the correlations. The results did not show any correlations between the parameters. It can be concluded that the MAAP of an individual does not depend on the somatotype; but it may also be assumed that MAAP show changes with the percentage of fibre type, enzymatic activity in these fibres involved by large muscle groups which are relatively related to musculo-skeletal development (second component of somatotype) and neuro-muscular properties of the subjects, all having a genetic basis.

  12. The AGT Gene M235T Polymorphism and Response of Power-Related Variables to Aerobic Training

    Science.gov (United States)

    Aleksandra, Zarębska; Zbigniew, Jastrzębski; Waldemar, Moska; Agata, Leońska-Duniec; Mariusz, Kaczmarczyk; Marek, Sawczuk; Agnieszka, Maciejewska-Skrendo; Piotr, Żmijewski; Krzysztof, Ficek; Grzegorz, Trybek; Ewelina, Lulińska-Kuklik; Semenova, Ekaterina A.; Ahmetov, Ildus I.; Paweł, Cięszczyk

    2016-01-01

    The C allele of the M235T (rs699) polymorphism of the AGT gene correlates with higher levels of angiotensin II and has been associated with power and strength sport performance. The aim of the study was to investigate whether or not selected power-related variables and their response to a 12-week program of aerobic dance training are modulated by the AGT M235T genotype in healthy participants. Two hundred and one Polish Caucasian women aged 21 ± 1 years met the inclusion criteria and were included in the study. All women completed a 12-week program of low and high impact aerobics. Wingate peak power and total work capacity, 5 m, 10 m, and 30 m running times and jump height and jump power were determined before and after the training programme. All power-related variables improved significantly in response to aerobic dance training. We found a significant association between the M235T polymorphism and jump-based variables (squat jump (SJ) height, p = 0.005; SJ power, p = 0.015; countermovement jump height, p = 0.025; average of 10 countermovement jumps with arm swing (ACMJ) height, p = 0.001; ACMJ power, p = 0.035). Specifically, greater improvements were observed in the C allele carriers in comparison with TT homozygotes. In conclusion, aerobic dance, one of the most commonly practiced adult fitness activities in the world, provides sufficient training stimuli for augmenting the explosive strength necessary to increase vertical jump performance. The AGT gene M235T polymorphism seems to be not only a candidate gene variant for power/strength related phenotypes, but also a genetic marker for predicting response to training. Key points Aerobic dance provides sufficient training stimuli for the improvement of explosive power. The AGT gene M235T polymorphism is associated with individual variation in the change of power-related phenotypes in response to aerobic dance training. The C allele carriers of the AGT gene M235T polymorphism show greater improvements of jump

  13. Neural Spike-Train Analyses of the Speech-Based Envelope Power Spectrum Model

    Directory of Open Access Journals (Sweden)

    Varsha H. Rallapalli

    2016-10-01

    Full Text Available Diagnosing and treating hearing impairment is challenging because people with similar degrees of sensorineural hearing loss (SNHL often have different speech-recognition abilities. The speech-based envelope power spectrum model (sEPSM has demonstrated that the signal-to-noise ratio (SNRENV from a modulation filter bank provides a robust speech-intelligibility measure across a wider range of degraded conditions than many long-standing models. In the sEPSM, noise (N is assumed to: (a reduce S + N envelope power by filling in dips within clean speech (S and (b introduce an envelope noise floor from intrinsic fluctuations in the noise itself. While the promise of SNRENV has been demonstrated for normal-hearing listeners, it has not been thoroughly extended to hearing-impaired listeners because of limited physiological knowledge of how SNHL affects speech-in-noise envelope coding relative to noise alone. Here, envelope coding to speech-in-noise stimuli was quantified from auditory-nerve model spike trains using shuffled correlograms, which were analyzed in the modulation-frequency domain to compute modulation-band estimates of neural SNRENV. Preliminary spike-train analyses show strong similarities to the sEPSM, demonstrating feasibility of neural SNRENV computations. Results suggest that individual differences can occur based on differential degrees of outer- and inner-hair-cell dysfunction in listeners currently diagnosed into the single audiological SNHL category. The predicted acoustic-SNR dependence in individual differences suggests that the SNR-dependent rate of susceptibility could be an important metric in diagnosing individual differences. Future measurements of the neural SNRENV in animal studies with various forms of SNHL will provide valuable insight for understanding individual differences in speech-in-noise intelligibility.

  14. LONG TERM EFFECTS OF DIFFERENT TRAINING MODALITIES ON POWER, SPEED, SKILL AND ANAEROBIC CAPACITY IN YOUNG MALE BASKETBALL PLAYERS

    Directory of Open Access Journals (Sweden)

    Mindaugas Balciunas

    2006-03-01

    Full Text Available The purpose of this study was to identify the effect of 4 months of different training modalities on power, speed, skill and anaerobic capacity in 15-16 year old male basketball players. Thirty five Lithuanian basketball players were randomly assigned into three groups: power endurance group (intermittent exercise, PE, n = 12, general endurance group (continuous exercise, GE, n = 11 and control group (regular basketball training, CG, n = 12. The power endurance model was based in basketball game external structure whereas the general endurance model was based in continuous actions that frequently occur during the basketball game. The training models were used for 16 weeks in sessions conducted 3 times a week during 90 minutes each in the competition period. The following tests were performed: 20 m speed run, Squat jump, Countermovement jump, Running-based Anaerobic Sprint Test (RAST, 2 min. shooting test and the Shuttle ball-dribbling test. A 3×2 repeated measures ANOVA revealed no statistically significant differences in the 20 m speed run, Squat jump and Countermovement jump (p > 0.05. On the other hand, RAST showed significant increases in PE, with greater increases during the 5th and 6th runs. The PE training model also produced a significant improvement in the shuttle ball-dribbling test (48.7 ± 1.5 in the pretest, 45.5 ± 1.3 in the posttest, p < 0.05. Globally, our results suggest that both training modalities were able to maintain initial values of speed and power, however, the anaerobic capacity and skill increased only in the players from the power endurance group. Therefore, the power endurance training (intermittent high intensity exercise may be more beneficial to prepare junior players according to the game cardiovascular and metabolic specific determinants

  15. [Effects of Reactive Jump Training in Handball Players Regarding Jump Height and Power Development in the Triceps Surae Muscle].

    Science.gov (United States)

    Rensing, N; Westermann, A; Möller, D; von Piekartz, H

    2015-12-01

    Studies have shown changes in the technical and physical demands in modern handball. The game has increased considerably in speed, power and dynamics. Jump training has, therefore, become ever more important in the training of the athletes. These developments contribute to the fact that handball is now one of the most injury-prone types of sport, with the lower extremities being most frequently affected. Reactive jump training is not only used in training by now, but also increasingly in injury prevention. The aim of this study was to investigate the effectiveness of reactive jump training with handball players. 21 regional league handball players were randomly divided into an intervention group (n = 12) and a control group (n = 9). The intervention group completed a six-week reactive jump training programme while the control group went through a non-specific training programme. Jump height (squat and counter movement jump), isokinetic and isometric maximum power as well as muscle activity served as measuring parameters. A comparison of the intervention and control groups revealed that the reactive jump training led to significant improvements in jump height. The isometric and isokinetic maximum power measurements and the electromyographic activities of the triceps surae muscle demonstrated an improvement in the values within the intervention group. However, this improvement was not significant compared with the control group. Likewise both jumps correlated with the muscle activity of the soleus muscle as shown by electromyography. A moderate correlation was noticed between the isokinetic maximum power measurement and the electromyographic activity of the soleus and gastrocnemius medialis muscles. Furthermore, the correlations of the isometric and isokinetic maximum power meas-urements resulted in a strong correlation coefficient. This study revealed a significant increase in jump height after reactive jump training. There was no significant difference in

  16. Comparative Study of High Powerful Magnet with Conventional Repair of Suture in the Intestinal Anastomosis of Rats

    Directory of Open Access Journals (Sweden)

    Marjan Joudi

    2016-02-01

    Full Text Available Background In this study, given the importance of gastrointestinal anastomosis in surgical procedures, attempts have been made to compare the results of employing magnetic compression anastomosis and magnetic coils in intestinal anastomosis of rats. Materials and Methods This study was an experimental trial on 60 rats which had been randomly divided into two experiment (30 and control (30 groups. First, the rat intestine was cut off from a relatively fixed point and then magnet anastomosis was performed at the both ends of bowel in the control group and manual suture in the experiment group.  Anastomosis was then examined 10 days after the surgery for possible complications with a histological analysis of the indices of tissue repair. Results The mean time required for performing anastomosis of the rat intestine was 735 and 366 seconds for the control and experiment groups, respectively. Also, the laparotomy performed 10 days after the first operation did not show any significant difference between two groups in terms of surgical complications such as infiltration factor of inflammatory cell and fibroblast activity (P>0.05. The microscopic examination indicated that the tissue reaction in the anastomosis site was better in terms of tissue repair of neo-angiogenesis intestine and collagen deposition in the magnet group(P>0.05.   Conclusion Given the shorter duration of the anastomosis by magnets and more favorable histological results reported in the experiment group, as well as the lack of any significant difference in complications of the two techniques, magnetic compressive anastomosis can be used as a new technique for intestinal surgeries and pertaining anastomosis. Although, we recommend that study will be done with large sample size to obtain reliable results.

  17. Implementation of digital safety related I and C systems at nuclear power plants. A systematic approach to training

    Energy Technology Data Exchange (ETDEWEB)

    Roedig, Peter; Schoenfelder, Christian [AREVA NP GmbH (Germany)

    2012-11-01

    In the past, refurbishment or modernization projects at nuclear power plants (NPP) dealing with the AREVA product for safety related digital instrumentation and control (I and C) systems, i.e. TELEPERM {sup registered} XS (TXS), regularly led to the development and implementation of different project specific training courses. They mostly dealt with a basic introduction to TELEPERM {sup registered} XS, as well as project specific engineering of TELEPERM {sup registered} XS and maintenance of the TELEPERM {sup registered} XS system supplied with the project. However, it gradually emerged that diverse training needs of different personnel involved in refurbishment or modernization projects as well as in new build projects had to be considered in more detail. Additionally, each target group, e.g. project managers, project engineers, technical engineers, commissioning engineers, operating and maintenance personnel, will have to work with TELEPERM {sup registered} XS at different phases within a project. Consequently, it became necessary to take into account the diverse training and project needs. According to the Systematic Approach to Training (SAT) process as developed and promoted by the International Atomic Energy Agency (IAEA), a job and task analysis was performed. After identification of related training needs and redesigning as well as modification or development of appropriate training material, a comprehensive, standardized TELEPERM {sup registered} XS training offer is now available at the AREVA Reactor Training Center. This training offer can be easily adapted to project or customer specific requirements. (orig.)

  18. ADAPTIVE CHANGES OF MYOSIN ISOFORMS IN RESPONSE TO LONG-TERM STRENGTH AND POWER TRAINING IN MIDDLE-AGED MEN

    Directory of Open Access Journals (Sweden)

    Raivo Puhke

    2006-06-01

    Full Text Available The purpose of the study was to examine the adaptive changes in myosin heavy chain (MHC and light chain (MLC isoforms in human vastus lateralis muscle caused by long-term strength and power training (54 weeks, approximately 3 times a week in untrained middle- aged men (16 in the training and 6 in the control group. Muscular MHC and MLC isoforms were determined by means of SDS-PAGE gel electrophoresis. During the training period, maximal anaerobic cycling power increased by 64 W (p < 0.001 and the maximal jumping height by 1.5 cm (p < 0. 05 in the training group, but no significant changes were found in the control group. However, the group by time effect was not significant. In the training group, the increase of the maximal jumping height correlated with the number of strength and power training sessions (r = 0.56; p < 0.05. The change of the proportion of MHC IIa isoform from 52.6 ± 12.2% to 59.4 ± 11.6% did not reach statistical significance (p = 0.070 for group by time; within training group p = 0.061 and neither did the change of the proportion of MHC IIx isoform from 18.1 ± 11.4% to 11.1 ± 9.1% (p = 0.104 for group by time; within training group p=0.032. The degree of change of MHC IIx isoform correlated with the amount of earlier recreational sports activity (r = 0.61; p < 0.05. In the training group, the changes of MLC1s isoform correlated negatively with the changes of MLC1f isoform (r = -0. 79; p < 0.05 as well as with the changes in maximal anaerobic cycling power (r = -0.81; p < 0.05, and positively with those of MHC I isoform (r = 0.81; p < 0.05. In conclusion, the long- term strength and power training ~3 times a week seemed to have only slight effects on fast MHC isoforms in the vastus lateralis muscle of untrained middle-aged men; the proportion of MHC IIa tended to increase and that of MHC IIx tended to decrease. No changes in MLC isoform profile could be shown

  19. Sport-Specific Repeated Sprint Training Improves Punching Ability And Upper-Body Aerobic Power In Experienced Amateur Boxers.

    Science.gov (United States)

    Kamandulis, Sigitas; Bruzas, Vidas; Mockus, Pranas; Stasiulis, Alvydas; Snieckus, Audrius; Venckunas, Tomas

    2017-08-09

    High-intensity interval training improves endurance and performance, but it is unclear whether sprint-type upper-body interval training is similarly effective. This study explored the effects of 4-week sport-specific sprint interval training on punch characteristics and endurance capacity in boxers. Experienced male amateur boxers (n = 18) participated in this 4-week training study, and were divided into an experimental group (EG) and a control group (CG) (n = 9 per group). Both groups completed standard low-intensity training. The EG also completed 3 rounds (14 sets of 3 s all-out punching with 10 s rest) of a simulated fight using a punching bag with 1 min rest between rounds 3 times per week, while the CG performed the same 3 rounds of a simulated fight at low intensity. Three rounds of 14 sets of 3 s all-out punching of a bag ergometer with 10 s rest were performed to measure punching abilities. Peak oxygen consumption and peak power were measured during progressive arm cranking before and after training. In response to training peak oxygen consumption and peak power in arm cranking test increased in EG; also, punching force increased and maintenance of punching frequency and punch force improved during the simulated fight, which resulted in greater cumulative force throughout the 3 rounds. There were no changes in the CG. The study shows that 1 month of all-out punching training (3 sessions per week with ∼2 min of all-out punching per session) improved both upper-body aerobic power and punching abilities in experienced amateur boxers.

  20. No reserve in isokinetic cycling power at intolerance during ramp incremental exercise in endurance-trained men.

    Science.gov (United States)

    Ferguson, Carrie; Wylde, Lindsey A; Benson, Alan P; Cannon, Daniel T; Rossiter, Harry B

    2016-01-01

    During whole body exercise in health, maximal oxygen uptake (V̇o2max) is typically attained at or immediately before the limit of tolerance (LoT). At the V̇o2max and LoT of incremental exercise, a fundamental, but unresolved, question is whether maximal evocable power can be increased above the task requirement, i.e., whether there is a "power reserve" at the LoT. Using an instantaneous switch from cadence-independent (hyperbolic) to isokinetic cycle ergometry, we determined maximal evocable power at the limit of ramp-incremental exercise. We hypothesized that in endurance-trained men at LoT, maximal (4 s) isokinetic power would not differ from the power required by the task. Baseline isokinetic power at 80 rpm (Piso; measured at the pedals) and summed integrated EMG from five leg muscles (ΣiEMG) were measured in 12 endurance-trained men (V̇o2max = 4.2 ± 1.0 l/min). Participants then completed a ramp incremental exercise test (20-25 W/min), with instantaneous measurement of Piso and ΣiEMG at the LoT. Piso decreased from 788 ± 103 W at baseline to 391 ± 72 W at LoT, which was not different from the required ramp-incremental flywheel power (352 ± 58 W; P > 0.05). At LoT, the relative reduction in Piso was greater than the relative reduction in the isokinetic ΣiEMG (50 ± 9 vs. 63 ± 10% of baseline; P power is not different from the power required by the task and is consequent to both central and peripheral limitations in evocable power. The absence of a power reserve suggests both the perceptual and physiological limits of maximum voluntary power production are not widely dissociated at LoT in this population.

  1. INTERNAL REPAIR OF PIPELINES

    Energy Technology Data Exchange (ETDEWEB)

    Bill Bruce; Nancy Porter; George Ritter; Matt Boring; Mark Lozev; Ian Harris; Bill Mohr; Dennis Harwig; Robin Gordon; Chris Neary; Mike Sullivan

    2005-07-20

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without

  2. Power, Control, and Gender: Training as Catalyst for Dysfunctional Behavior at the United States Air Force Academy

    Science.gov (United States)

    Callahan, Jamie L.

    2005-01-01

    I explore the role of training practices at the United States Air Force Academy (USAFA) in perpetuating power and control issues and the potential consequences of those practices. I argue that trainee responses to control deprivation may have resulted in alleged sexual assaults by male cadets and the eating disorders manifested by female cadets.…

  3. Multi-Sector General Permit Annual Industrial Storm Water Training, TA-3-22 Power and Steam Plant (Sector 0)

    Energy Technology Data Exchange (ETDEWEB)

    Shendo, Marwin Patrick [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-01-12

    This report offers training for employees who work at TA-3-22, the Power and Steam Plant that move product, metal, and other pollutants like oil, fuel, equipment, pumps, etc. outside or that work outside with industrial materials exposed to storm water.

  4. The biomechanical mechanism of how strength and power training improves walking speed in old adults remains unknown

    NARCIS (Netherlands)

    Beijersbergen, C. M. I.; Granacher, U.; Vandervoort, A. A.; DeVita, P.; Hortobagyi, T.

    2013-01-01

    Maintaining and increasing walking speed in old age is clinically important because this activity of daily living predicts functional and clinical state. We reviewed evidence for the biomechanical mechanisms of how strength and power training increase gait speed in old adults. A systematic search yi

  5. Crossfit-based high-intensity power training improves maximal aerobic fitness and body composition.

    Science.gov (United States)

    Smith, Michael M; Sommer, Allan J; Starkoff, Brooke E; Devor, Steven T

    2013-11-01

    The purpose of this study was to examine the effects of a crossfit-based high-intensity power training (HIPT) program on aerobic fitness and body composition. Healthy subjects of both genders (23 men, 20 women) spanning all levels of aerobic fitness and body composition completed 10 weeks of HIPT consisting of lifts such as the squat, deadlift, clean, snatch, and overhead press performed as quickly as possible. Additionally, this crossfit-based HIPT program included skill work for the improvement of traditional Olympic lifts and selected gymnastic exercises. Body fat percentage was estimated using whole-body plethysmography, and maximal aerobic capacity (VO2max) was measured by analyzing expired gasses during a Bruce protocol maximal graded treadmill test. These variables were measured again after 10 weeks of training and compared for significant changes using a paired t-test. Results showed significant (p < 0.05) improvements of VO2max in men (43.10 ± 1.40 to 48.96 ± 1.42 ml · kg · min) and women (35.98 ± 1.60 to 40.22 ± 1.62 ml · kg · min) and decreased body fat percentage in men (22.2 ± 1.3 to 18.0 ± 1.3) and women (26.6 ± 2.0 to 23.2 ± 2.0). These improvements were significant across all levels of initial fitness. Significant correlations between absolute oxygen consumption and oxygen consumption relative to body weight was found in both men (r = 0.83, p < 0.001) and women (r = 0.94, p < 0.001), indicating that HIPT improved VO2max scaled to body weight independent of changes to body composition. Our data show that HIPT significantly improves VO2max and body composition in subjects of both genders across all levels of fitness.

  6. Bladder exstrophy repair

    Science.gov (United States)

    Bladder birth defect repair; Everted bladder repair; Exposed bladder repair; Repair of bladder exstrophy ... Bladder exstrophy repair involves two surgeries. The first surgery is to repair the bladder and the second one is to attach ...

  7. Speed endurance training is a powerful stimulus for physiological adaptations and performance improvements of athletes

    DEFF Research Database (Denmark)

    Iaia, F. M.; Bangsbo, Jens

    2010-01-01

    performance during longer events, e.g. 40 K cycling and 10 K running. Athletes in team sports involving intense exercise actions and endurance aspects can also benefit from performing speed endurance training. These improvements don't appear to depend on changes in maximum oxygen uptake (VO2max), muscle......The present article reviews the physiological and performance effects of speed endurance training consisting of exercise bouts at near maximal intensities in already trained subjects. Despite a reduction in training volume, speed endurance training of endurance-trained athletes can maintain...

  8. Clamp wins pipe repair prize

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2001-04-01

    This paper describes the permanent pipeline repair system, developed by Tekmar, which is powered by seawater hydraulics and is easily installed and tested by any workclass remotely operated vehicle (rov). Details are given of the two main components of the system, namely, the diverless high pressure split repair clamp and the rov-operated tool to install it.

  9. INTERNAL REPAIR OF PIPELINES

    Energy Technology Data Exchange (ETDEWEB)

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

    2004-12-31

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without

  10. State of the environment in the arrangement area of the enterprises for repairing and utilization of nuclear-powered submarines.

    Science.gov (United States)

    Dovgusha; Bychenkov; Blekher; Belyaev; Krupkin; Kovygin; Puzikov; Ryabchikov; Stepanov; Toropov

    2001-01-01

    The influence of nuclear-powered utilization (disjunction) upon the state of health of the soil, vegetation and atmospheric air was studied. It was stated that the concentration of hazardous metals in the air of an industrial site did not exceed the permissible levels. In the residential area the cases of increased concentrations of manganese and chromium were noted. The major pollutants of vegetation are manganese, titanium, copper and nickel. The authors propose a complex of anthropogenic factors to be the cause of the environmental contamination by hard metals. The volume activity of radioactive aerosols in the studied site is confined to the local hum.

  11. THE EFFECTS OF TAI CHI CHUAN COMBINED WITH VIBRATION TRAINING ON BALANCE CONTROL AND LOWER EXTREMITY MUSCLE POWER

    Directory of Open Access Journals (Sweden)

    Pao-Hung Chung

    2013-03-01

    Full Text Available The aim of this study was to determine whether performing Tai Chi Chuan on a customized vibration platform could enhance balance control and lower extremity muscle power more efficiently than Tai Chi Chuan alone in an untrained young population. Forty-eight healthy young adults were randomly assigned to the following three groups: a Tai Chi Chuan combined with vibration training group (TCV, a Tai Chi Chuan group (TCC or a control group. The TCV group underwent 30 minutes of a reformed Tai Chi Chuan program on a customized vibration platform (32 Hz, 1 mm three times a week for eight weeks, whereas the TCC group was trained without vibration stimuli. A force platform was used to measure the moving area of a static single leg stance and the heights of two consecutive countermovement jumps. The activation of the knee extensor and flexor was also measured synchronously by surface electromyography in all tests. The results showed that the moving area in the TCV group was significantly decreased by 15.3%. The second jump height in the TCV group was significantly increased by 8.14%, and the activation of the knee extensor/flexor was significantly decreased in the first jump. In conclusion, Tai Chi Chuan combined with vibration training can more efficiently improve balance control, and the positive training effect on the lower extremity muscle power induced by vibration stimuli still remains significant because there is no cross-interaction between the two different types of training methods.

  12. INTERNAL REPAIR OF PIPELINES

    Energy Technology Data Exchange (ETDEWEB)

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

    2004-08-17

    The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners

  13. Relative Power of Specific EEG Bands and Their Ratios during Neurofeedback Training in Children with Autism Spectrum Disorder

    Directory of Open Access Journals (Sweden)

    Yao eWang

    2016-01-01

    Full Text Available Neurofeedback is a mode of treatment that is potentially useful for improving self-regulation skills in persons with autism spectrum disorder. We proposed that operant conditioning of EEG in neurofeedback mode can be accompanied by changes in the relative power of EEG bands. However, the details on the change of the relative power of EEG bands during neurofeedback training course in autism are not yet well explored. In this study, we analyzed the EEG recordings of children diagnosed with autism and enrolled in a prefrontal neurofeedback treatment course. The protocol used in this training was aimed at increasing the ability to focus attention, and the procedure represented the wide band EEG amplitude suppression training along with upregulation of the relative power of gamma activity. Quantitative EEG analysis was completed for each session of neurofeedback using wavelet transform to determine the relative power of gamma and theta/beta ratio, and further to detect the statistical changes within and between sessions. We found a linear decrease of theta/beta ratio and a liner increase of relative power of gamma activity over 18 weekly sessions of neurofeedback in 18 high functioning children with autism. The study indicates that neurofeedback is an effective method for altering EEG characteristics associated with the autism spectrum disorder. Also, it provides information about specific changes of EEG activities and details the correlation between changes of EEG and neurofeedback indexes during the course of neurofeedback. This pilot study contributes to the development of more effective approaches to EEG data analysis during prefrontal neurofeedback training in autism.Key word: Electroencephalography, Neurofeedback, Autism Spectrum Disorder, Gamma activity, EEG bands’ ratios

  14. Systematic Approach to Training for System Engineers in Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Kwak, Jeong-keun [Korea Hydro and Nuclear Power Co., Ulsan (Korea, Republic of)

    2015-10-15

    In my paper, comprehensive preparations, tangible applications, and final establishments of training for system engineers are described using practical materials in KHNP. The purpose of this paper is to formulate SAT based training in KHNP, especially for system engineers. Hence, to achieve this goal, over one year study was performed considering voluminous materials and working experiences. Through the process, SAT based training package for system engineers was finished, in the end. In terms of training in NPPs, SAT methodology is the unwavering trend in South Korea since NPPs export to UAE. Therefore, materialization of SAT based training for system engineers from the origin of SAT to the finalization of SAT should not be overlooked. A variety of accident preventive approaches have been adopted since the first commercial NPP operation in Calder Hall, United Kingdom. Among diverse event preventive ways, training has played an important role for the improvement of NPPs reliability and safety. This is reason why nuclear industry in every country has established and maintained own training institutes and methods. Since the Three Mile Island (TMI) accident, United States Nuclear Regulatory Commission (USNRC) recommended many betterment plans to US nuclear industry for the elevation of NPPs safety. In the suggested considerations, systematic approach to training, so called SAT appeared in the world. Basically, SAT is composed of five stages, what is called ADDIE. Hence, through ADDIE process, holistic and trustworthy training could be realized in the actual NPPs operation and maintenance. For this reason, SAT is the representative training methodology in the US nuclear business.

  15. Power Service Shops

    Data.gov (United States)

    Federal Laboratory Consortium — TVA's Power Service Shops provides expert repair and maintenance of power system components and large industrial equipment. With world-class maintenance facilities...

  16. Prior sprint cycling did not enhance training adaptation, but resting salivary hormones were related to workout power and strength.

    Science.gov (United States)

    Crewther, Blair T; Lowe, Tim; Weatherby, Robert P; Gill, Nicholas

    2009-04-01

    This study examined the effect of cycle sprints as a potentiating stimulus for power and strength adaptation in semi-elite athletes. Eighteen rugby players were assigned into training groups that completed either a 40-s cycle sprint (T(SPRINT)) or rested (T(CONTROL)) before each workout (n = 6-8) of a 4-week programme. Squat jump (SJ) peak power (PP) and mean power (MP), and box squat (BS) one repetition maximum (1RM) strength were assessed every workout. Saliva was collected across each workout and assayed for testosterone (Sal-T) and cortisol (Sal-C). The T(SPRINT) and T(CONTROL) groups both showed significant improvements in SJ PP (8.2 +/- 2.9 vs. 11.9 +/- 3.6%), SJ MP (11.8 +/- 2.6 vs. 18.6 +/- 4.8%) and BS 1RM (20.5 +/- 2.6 vs. 23.2 +/- 1.3%), respectively. However, there were no group differences in training adaptation, workout performance or the workout hormonal responses. As a combined group (all players), significant relationships were demonstrated between resting Sal-T and/or Sal-C concentrations and absolute SJ power (r = 0.20-0.30) and BS strength (r = 0.36-0.44) across all workouts. For individual players, the respective relationships with SJ power (r = 0.22-0.42) and BS strength (r = 0.41-0.49) were, on average, found to be stronger. In conclusion, leg workouts performed with or without prior cycle sprints can produce similar power and strength improvements in semi-elite rugby players. Resting salivary hormone concentrations appear important for workout performance, especially for individuals, thereby potentially moderating training adaptation.

  17. Work and Learning in Micro Car-Repair Enterprises. A Comparative Study on the Relationship between Technological and Organisational Developments and Training Activities in Micro Car-Repair Enterprises in Four European Countries. Synthesis Report. CEDEFOP Panorama.

    Science.gov (United States)

    van den Tillaart, Harry; van den Berg, Sjaak; Warmerdam, John

    Work and learning in microenterprises in the car repair industries of four European Community (EC) countries were examined through 21 case studies of firms with 10 or fewer employees (6 firms in Ireland and 5 each in Greece, the Netherlands, and Spain). Structured interviews were conducted with each firm's owner and 60 motor vehicle mechanics at…

  18. Changes in power and force generation during coupled eccentric-concentric versus concentric muscle contraction with training and aging

    DEFF Research Database (Denmark)

    Caserotti, Paolo; Aagaard, Per; Puggaard, Lis

    2008-01-01

    center of mass were measured in two standardised vertical jumps (squatting jump, SQJ; countermovement jump, CMJ). Pre-stretch enhancement during CMJ did not improve performance [i.e., no enhanced maximal muscle power (P (peak)) and jump height (JH)] compared to concentric-alone muscle contraction (SQJ......-alone and coupled eccentric-concentric contraction and selected functional motor performances before and after 36-week multicomponent training including aerobic, strength, balance, flexibility and coordination components in elderly males. Vertical force, excursion, velocity, power and acceleration of the body...

  19. Driving to learn: a new concept for training children with profound cognitive disabilities in a powered wheelchair.

    Science.gov (United States)

    Nilsson, Lisbeth M; Nyberg, Per J

    2003-01-01

    Analysis of the case studies of two preschool children with profound cognitive disabilities indicates that training in a powered wheelchair can increase wakefulness and alertness, stimulate a limited use of the arms and hands, and promote the understanding of very simple cause-and-effect relationships. The enhanced activity level had a positive influence on the children's ability to react to external stimuli and invitations to interact. These effects in turn promoted the development of initiative and exploratory behavior. Because of their profound cognitive disabilities, neither of the children was able to reach the normative training goal-to be able to drive purposefully and safely. In this paper the target group is defined according to criteria for the prescription of powered wheelchairs and the resulting new concept of 'driving to learn' is described and discussed from different aspects.

  20. Game method application efficiency for speed and power capability development of trampoline athletes at the initial training stage

    Directory of Open Access Journals (Sweden)

    Alfia Deineko

    2017-06-01

    Full Text Available Purpose: to prove the effectiveness of using the game method for speed and power capability development of trampoline athletes at the initial training stage. Material & Methods: in the article the materials of the research that was carried out with the help of pedagogical testing of trampoliners of 7–8 years on the basis of the Children and Youth Sports School No. 7, Trampoline Department of Kharkov. Results: conducted pedagogical experiment showed the effectiveness of the developed methodology for the development of speed-strength abilities of trampoline athletes at the initial training stage using the game method. Conclusion: results of the experiment confirm the importance of the use of the game method for the development of speed-strength abilities in the initial training of young trampolines, which further affects the level of their technical preparedness and the effectiveness of competition activities.

  1. Effect of strength training with blood flow restriction on muscle power and submaximal strength in eumenorrheic women.

    Science.gov (United States)

    Gil, Ana L S; Neto, Gabriel R; Sousa, Maria S C; Dias, Ingrid; Vianna, Jeferson; Nunes, Rodolfo A M; Novaes, Jefferson S

    2017-03-01

    Blood flow restriction (BFR) training stimulates muscle size and strength by increasing muscle activation, accumulation of metabolites and muscle swelling. This method has been used in different populations, but no studies have evaluated the effects of training on muscle power and submaximal strength (SS) in accounted for the menstrual cycle. The aim of this study was to analyse the effect of strength training (ST) with BFR on the muscle power and SS of upper and lower limbs in eumenorrheic women. Forty untrained women (18-40 years) were divided randomly and proportionally into four groups: (i) high-intensity ST at 80% of 1RM (HI), (ii) low-intensity ST at 20% of 1RM combined with partial blood flow restriction (LI + BFR), (iii) low-intensity ST at 20% of 1RM (LI) and d) control group (CG). Each training group performed eight training sessions. Tests with a medicine ball (MB), horizontal jump (HJ), vertical jump (VJ), biceps curls (BC) and knee extension (KE) were performed during the 1st day follicular phase (FP), 14th day (ovulatory phase) and 26-28th days (luteal phase) of the menstrual cycle. There was no significant difference among groups in terms of the MB, HJ, VJ or BC results at any time point (P>0·05). SS in the KE exercise was significantly greater in the LI + BFR group compared to the CG group (P = 0·014) during the LP. Therefore, ST with BFR does not appear to improve the power of upper and lower limbs and may be an alternative to improve the SS of lower limbs of eumenorrheic women.

  2. Speed endurance training is a powerful stimulus for physiological adaptations and performance improvements of athletes.

    Science.gov (United States)

    Iaia, F M; Bangsbo, J

    2010-10-01

    The present article reviews the physiological and performance effects of speed endurance training consisting of exercise bouts at near maximal intensities in already trained subjects. Despite a reduction in training volume, speed endurance training of endurance-trained athletes can maintain the oxidative capacity and improve intense short-duration/repeated high-intensity exercise performance lasting 30 s to 4 min, as it occurs in a number of sports. When combined with a basic volume of training including some aerobic high-intensity sessions, speed endurance training is also useful in enhancing performance during longer events, e.g. 40 K cycling and 10 K running. Athletes in team sports involving intense exercise actions and endurance aspects can also benefit from performing speed endurance training. These improvements don't appear to depend on changes in maximum oxygen uptake (VO2max), muscle substrate levels, glycolytic and oxidative enzymes activity, and membrane transport proteins involved in pH regulation. Instead they appear to be related to a reduced energy expenditure during submaximal exercise and a higher expression of muscle Na(+) ,K(+) pump α-subunits, which via a higher Na(+) ,K(+) pump activity during exercise may delay fatigue development during intense exercise. In conclusion, athletes from disciplines involving periods of intense exercise can benefit from the inclusion of speed endurance sessions in their training programs.

  3. A Study on Optimization of Pratical Training Teaching of Auto Repair & Mataintence In Technical schools%技校汽车维修专业实训教学优化

    Institute of Scientific and Technical Information of China (English)

    魏振军

    2015-01-01

    Pratical training is the strengths of mechanic schools, Auto Maintenance and Repair is al major which is far more pratical. As for traditional practice teaching there are a lot of good teaching methods, based on which Auto Maintenance and Repair shall keep moven on , optimize and reform the teaching of Auto deeply . accelerate and improve the process of teaching reform of automobile major.%实训课是技工类学校的强项,汽车维修是实践性很强的专业。传统的实习课教学有很多好的教学方法,汽车维修要在此基础上与时俱进,深度的优化和改革汽车专业教学。加快和完善汽车专业的教学改革的进程。

  4. Full scope simulator of a nuclear power plant control room using 3D stereo virtual reality techniques for operators training

    Energy Technology Data Exchange (ETDEWEB)

    Aghina, Mauricio A.C.; Mol, Antonio Carlos A.; Almeida, Adino Americo A.; Pereira, Claudio M.N.A. [Instituto de Engenharia Nuclear (IEN-CNEN/RJ), Rio de Janeiro, RJ (Brazil)]. E-mails: mag@ien.gov.br; mol@ien.gov.br; adino@ien.gov.br; cmnap@ien.gov.br; Varela, Thiago F.B. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Programa de Engenharia Eletrica]. E-mail: phillips.rj@terra.com.br; Cunha, Gerson G. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Lab. de Metodos Computacionais em Engenharia (LAMCE)]. E-mail: gerson@lance.ufrj.br

    2007-07-01

    Practical training of nuclear power plants operators are partially performed by means of simulators. Usually these simulators are physical copies of the original control roam, needing a large space on a facility being also very expensive. In this way, the proposal of this paper is to implement the use of Virtual Reality techniques to design a full scope control room simulator, in a manner to reduce costs and physical space usage. (author)

  5. Self-consistent determination of the spike-train power spectrum in a neural network with sparse connectivity

    Directory of Open Access Journals (Sweden)

    Benjamin eDummer

    2014-09-01

    Full Text Available A major source of random variability in cortical networks is the quasi-random arrival of presynaptic action potentials from many other cells. In network studies as well as in the study of the response properties of single cells embedded in a network, synaptic background input is often approximated by Poissonian spike trains. However, the output statistics of the cells is in most cases far from being Poisson. This is inconsistent with the assumption of similar spike-train statistics for pre- and postsynaptic cells in a recurrent network. Here we tackle this problem for the popular class of integrate-and-fire neurons and study a self-consistent statistics of input and output spectra of neural spike trains. Instead of actually using a large network, we use an iterative scheme, in which we simulate a single neuron over several generations. In each of these generations, the neuron is stimulated with surrogate stochastic input that has a similar statistics as the output of the previous generation. For the surrogate input, we employ two distinct approximations: (i a superposition of renewal spike trains with the same interspike interval density as observed in the previous generation and (ii a Gaussian current with a power spectrum proportional to that observed in the previous generation. For input parameters that correspond to balanced input in the network, both the renewal and the Gaussian iteration procedure converge quickly and yield comparable results for the self-consistent spike-train power spectrum. We compare our results to large-scale simulations of a random sparsely connected network of leaky integrate-and-fire neurons (Brunel, J. Comp. Neurosci. 2000 and show that in the asynchronous regime close to a state of balanced synaptic input from the network, our iterative schemes provide excellent approximations to the autocorrelation of spike trains in the recurrent network.

  6. Self-consistent determination of the spike-train power spectrum in a neural network with sparse connectivity.

    Science.gov (United States)

    Dummer, Benjamin; Wieland, Stefan; Lindner, Benjamin

    2014-01-01

    A major source of random variability in cortical networks is the quasi-random arrival of presynaptic action potentials from many other cells. In network studies as well as in the study of the response properties of single cells embedded in a network, synaptic background input is often approximated by Poissonian spike trains. However, the output statistics of the cells is in most cases far from being Poisson. This is inconsistent with the assumption of similar spike-train statistics for pre- and postsynaptic cells in a recurrent network. Here we tackle this problem for the popular class of integrate-and-fire neurons and study a self-consistent statistics of input and output spectra of neural spike trains. Instead of actually using a large network, we use an iterative scheme, in which we simulate a single neuron over several generations. In each of these generations, the neuron is stimulated with surrogate stochastic input that has a similar statistics as the output of the previous generation. For the surrogate input, we employ two distinct approximations: (i) a superposition of renewal spike trains with the same interspike interval density as observed in the previous generation and (ii) a Gaussian current with a power spectrum proportional to that observed in the previous generation. For input parameters that correspond to balanced input in the network, both the renewal and the Gaussian iteration procedure converge quickly and yield comparable results for the self-consistent spike-train power spectrum. We compare our results to large-scale simulations of a random sparsely connected network of leaky integrate-and-fire neurons (Brunel, 2000) and show that in the asynchronous regime close to a state of balanced synaptic input from the network, our iterative schemes provide an excellent approximations to the autocorrelation of spike trains in the recurrent network.

  7. INTERNAL REPAIR OF PIPELINES

    Energy Technology Data Exchange (ETDEWEB)

    Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; Nancy Porter; Mike Sullivan; Chris Neary

    2004-04-12

    to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) Pipe diameter sizes range from 50.8 mm (2 in.) through 1,219.2 mm (48 in.). The most common size range for 80% to 90% of operators surveyed is 508 mm to 762 mm (20 in. to 30 in.), with 95% using 558.8 mm (22 in.) pipe. An evaluation of potential repair methods clearly indicates that the project should continue to focus on the development of a repair process involving the use of GMAW welding and on the development of a repair process involving the use of fiber-reinforced composite liners.

  8. The effects of stress on nuclear power plant operational decision making and training approaches to reduce stress effects

    Energy Technology Data Exchange (ETDEWEB)

    Mumaw, R.J.

    1994-08-01

    Operational personnel may be exposed to significant levels of stress during unexpected changes in plant state an plant emergencies. The decision making that identifies operational actions, which is strongly determined by procedures, may be affected by stress, and performance may be impaired. ER report analyzes potential effects of stress in nuclear power plant (NPP) settings, especially in the context of severe accident management (SAM). First, potential sources of stress in the NPP setting are identified. This analysis is followed by a review of the ways in which stress is likely to affect performance, with an emphasis on performance of cognitive skills that are linked to operational decision making. Finally, potential training approaches for reducing or eliminating stress effects are identified. Several training approaches have the potential to eliminate or mitigate stress effects on cognitive skill performance. First, the use of simulated events for training can reduce the novelty and uncertainty that can lead to stress and performance impairments. Second, training to make cognitive processing more efficient and less reliant on attention and memory resources can offset the reductions in these resources that occur under stressful conditions. Third, training that targets crew communications skills can reduce the likelihood that communications will fail under stress.

  9. Hypospadias repair

    Science.gov (United States)

    ... the problem. If the repair is not done, problems may occur later on such as: Difficulty controlling and directing urine stream A curve in the penis during erection Decreased fertility Embarrassment about appearance of penis Surgery ...

  10. The KWS training power plant Zwentendorf. Optimal conditions for practical training in the sectors of maintenance and dismantling of nuclear power plants; Das KWS-Schulungskraftwerk Zwentendorf. Die ideale Voraussetzung fuer praktische Schulungen in den Bereichen Instandhaltung und Rueckbau von kerntechnischen Anlagen

    Energy Technology Data Exchange (ETDEWEB)

    Maassen, Herbert [KRAFTWERKSSCHULE E.V., Essen (Germany). Weiterbildung Instandhaltung fuer konventionelle-/kerntechnische Anlagen und erneuerbare Energien

    2014-06-15

    In consequence of several years of interbranch staff reduction, started middle of the 1990th, at producers of power plant installation engineering, at plant service companies as well as at the operators of power plants and nuclear power plants themselves, an area-wide decline in know-how took place, which put the safe performance of maintenance activities in nuclear power plants more and more into question. The search for adequate training possibilities to cover these deficits lead to the reorganization of the nuclear power plant Zwentendorf at the year 2002, which was changed into a training facility for maintenance trainings, particularly for the sectors of reactor service, decommissioning and dismantling of nuclear power plants and other types of power plant specific training measures. For this purpose Zwentendorf was upgraded and transformed within a long-time process, and its combination may be considered as unique throughout the world. The Kraftwerksschule e.V. (KWS) owns the exclusive rights for the performance of training measures at Zwentendorf. During the last 10 years the KWS has made almost all sectors of this nuclear power plant accessible for trainings and inspections and offers a large training program. It is the aim of the training measures to ensure the operational reliability of the mechanical and installation engineering of nuclear power plants as well as fossil fired power plants in the long term through optimized maintenance planning and performance and therefore to operate the plants safely. Because of the direct practical reference to the original mechanical and installation engineering in the real atmosphere of a power plant, the nuclear power plant of Zwentendorf is highly suitable as a training centre for staff training in theory and practice. (orig.)

  11. Recent trends in repair and refurbishing of steam turbine components

    Indian Academy of Sciences (India)

    A K Bhaduri; S K Albert; S K Ray; P Rodriguez

    2003-06-01

    The repair and refurbishing of steam generator components is discussed from the perspective of repair welding philosophy including applicable codes and regulations. Some case histories of repair welding of steam generator components are discussed with special emphasis on details of repair welding of cracked steam turbine blades and shrouds in some of the commercial nuclear power plants using procedures developed.

  12. Moderate-Load Muscular Endurance Strength Training Did Not Improve Peak Power or Functional Capacity in Older Men and Women

    Directory of Open Access Journals (Sweden)

    Simon Walker

    2017-09-01

    Full Text Available The present study determined the effects of muscular endurance strength training on maximum strength and power, functional capacity, muscle activation and hypertrophy in older men and women. Eighty-one men and women acted as an intervention group while 22 acted as non-training controls (age range 64–75 y. Intervention training included super-sets (i.e., paired exercises, immediately performing the second exercises following completion of the first with short rest intervals (30–60 s between sets at an intensity of 50–60% one-repetition maximum (1-RM for 15–20 repetitions. Concentric leg press actions measured maximum strength (1-RM and concentric peak power. Functional capacity was assessed by maximum speed walking tests (i.e., forward walk, backward walk, timed-up-and-go, and stair climb tests. Quadriceps muscle activation was assessed by surface electromyogram and twitch interpolation technique. Vastus lateralis cross-sectional area was measured by panoramic ultrasound. Compared to control, the intervention groups increased maximum strength (1-RM; men: 10 ± 7% vs. 2 ± 3%, women: 14 ± 9% vs. 1 ± 6% both P < 0.01 and vastus lateralis cross-sectional area (men: 6 ± 7% vs. −3 ± 6%, women: 10 ± 10% vs. 0 ± 4% both P < 0.05. But there were no between-group differences in peak power, muscle activation or functional capacity (e.g., stair climb; men: −5 ± 7% vs. −4 ± 3%, women: −5 ± 6% vs. −2 ± 5% both P > 0.05. While benefits occurred during muscular endurance strength training, specific stimuli are probably needed to target all aspects of age-related health.

  13. A High Intensity Interval Training (HIIT)-Based Running Plan Improves Athletic Performance by Improving Muscle Power.

    Science.gov (United States)

    García-Pinillos, Felipe; Cámara-Pérez, Jose C; Soto-Hermoso, Víctor M; Latorre-Román, Pedro Á

    2017-01-01

    García-Pinillos, F, Cámara-Pérez, JC, Soto-Hermoso, VM, and Latorre-Román, PÁ. A High Intensity Interval Training (HIIT)-based running plan improves athletic performance by improving muscle power. J Strength Cond Res 31(1): 146-153, 2017-This study aimed to examine the effect of a 5-week high-intensity intermittent training (HIIT)-based running plan on athletic performance and to compare the physiological and neuromuscular responses during a sprint-distance triathlon before and after the HIIT period. Thirteen triathletes were matched into 2 groups: the experimental group (EG) and the control group (CG). The CG was asked to maintain their normal training routines, whereas the EG maintained only their swimming and cycling routines and modified their running routine. Participants completed a sprint-distance triathlon before (pretest) and after (posttest) the intervention period. In both pretest and posttest, the participants performed 4 jumping tests: before the race (baseline), postswim, postcycling, and postrun. Additionally, heart rate was monitored (HRmean), whereas rate of perceived exertion (RPE) and blood lactate accumulation (BLa) were registered after the race. No significant differences (p ≥ 0.05) between groups were found before HIIT intervention (at pretest). Significant group-by-training interactions were found in vertical jumping ability and athletic performance: the EG improved jumping performance (∼6-9%, p ≤ 0.05, effect size (ES) > 0.7), swimming performance (p = 0.013, ES = 0.438), and running time (p = 0.001, ES = 0.667) during the competition, whereas the CG remained unchanged (p ≥ 0.05, ES HIIT-based running plan combined with the high training volumes of these triathletes in swimming and cycling improved athletic performance during a sprint-distance triathlon. This improvement may be due to improved neuromuscular characteristics that were transferred into improved muscle power and work economy.

  14. Optimal Velocity to Achieve Maximum Power Output – Bench Press for Trained Footballers

    Directory of Open Access Journals (Sweden)

    Richard Billich

    2015-03-01

    Full Text Available Optimal Velocity to Achieve Maximum Power Output – Bench Press for Trained Footballers In today’s world of strength training there are many myths surrounding effective exercising with the least possible negative effect on one’s health. In this experiment we focus on the finding of a relationship between maximum output, used load and the velocity with which the exercise is performed. The main objective is to find the optimal speed of the exercise motion which would allow us to reach the maximum mechanic muscle output during a bench press exercise. This information could be beneficial to sporting coaches and recreational sportsmen alike in helping them improve the effectiveness of fast strength training. Fifteen football players of the FK Třinec football club participated in the experiment. The measurements were made with the use of 3D cinematic and dynamic analysis, both experimental methods. The research subjects participated in a strength test, in which the mechanic muscle output of 0, 10, 30, 50, 70, 90% and one repetition maximum (1RM was measured. The acquired result values and other required data were modified using Qualisys Track Manager and Visual 3D software (C-motion, Rockville, MD, USA. During the bench press exercise the maximum mechanic muscle output of the set of research subjects was reached at 75% of maximum exercise motion velocity. Optimální rychlost pohybu pro dosažení maxima výstupního výkonu – bench press u trénovaných fotbalistů Dnešní svět silového tréninku přináší řadu mýtů o tom, jak cvičit efektivně a zároveň s co nejmenším negativním vlivem na zdraví člověka. V tomto experimentu se zabýváme nalezením vztahu mezi maximálním výkonem, použitou zátěží a rychlostí. Hlavním úkolem je nalezení optimální rychlosti pohybu pro dosažení maximálního mechanického svalového výkonu při cvičení bench press, což pomůže nejenom trenérům, ale i rekreačním sportovc

  15. The effects of six weeks of supplementation with multi-ingredient performance supplements and resistance training on anabolic hormones, body composition, strength, and power in resistance-trained men

    OpenAIRE

    2012-01-01

    Abstract Background Resistance training (RT) enhances muscle protein synthesis and hypertrophy while increasing strength and power. Some multi-ingredient performance supplements (MIPS) have been shown to augment the physiological improvements associated with RT. The purpose of this study was to investigate the impact of specific pre- and post-workout MIPS on anabolic hormones, body composition, muscle strength, and power in resistance-trained men participating in a periodized RT program. Meth...

  16. 差动轮系中的循环功率分析%Cycle Power Analysis in Differential Gear Train

    Institute of Scientific and Technical Information of China (English)

    贺亮; 叶斯伦; 张庆春; 张浩; 李星晨

    2015-01-01

    通过分析典型的差动轮系中齿轮受力与转速的关系,推导出差动轮系中当2个不同构件作主动件时的2种典型工况下,轮系产生循环功率的条件和原因,并采用某液压机械无级变速箱中的双排差动轮系的工作实例进行了分析和验证.研究结果表明,差动轮系中是否产生循环功率取决于2个主动构件的转动方向.该结论可以为采用差动轮系传递动力的系统提供理论参考依据,使系统避免工作在产生循环功率的工况下,提高系统的工作效率.%The relation between gears' stress and rotating speed were analyzed when use two different parts as power input member,and condition when cycle power produced in differential gear train system were ob-tained in two typical working conditions.A kind of hydro-mechanical continuously variable transmission(HM-CVT)with double row differential gear train was analyzed to verify the conclusions.The results showed that whether recycle power was produced depends on the two active members' relative rotating directions.The conclusion provided theoretical reference for a system with a differential gear train to avoid producing cy-cle power and improving the work efficiency.

  17. Ancient peat and apple extracts supplementation may improve strength and power adaptations in resistance trained men

    OpenAIRE

    Joy, Jordan M; Vogel, Roxanne M.; Moon, Jordan R; Falcone, Paul H; Matt M Mosman; Pietrzkowski, Zbigniew; Reyes, Tania; Michael P. Kim

    2016-01-01

    Background Increased cellular ATP levels have the potential to enhance athletic performance. A proprietary blend of ancient peat and apple extracts has been supposed to increase ATP production. Therefore, the purpose of this investigation was to determine the effects of this supplement on athletic performance when used during 12 weeks of supervised, periodized resistance training. Methods Twenty-five healthy, resistance-trained, male subjects completed this study. Subjects supplemented once d...

  18. The pulling power of chocolate: Effects of approach-avoidance training on approach bias and consumption.

    Science.gov (United States)

    Dickson, Hugh; Kavanagh, David J; MacLeod, Colin

    2016-04-01

    Previous research has shown that action tendencies to approach alcohol may be modified using computerized Approach-Avoidance Task (AAT), and that this impacted on subsequent consumption. A recent paper in this journal (Becker, Jostman, Wiers, & Holland, 2015) failed to show significant training effects for food in three studies: Nor did it find effects on subsequent consumption. However, avoidance training to high calorie foods was tested against a control rather than Approach training. The present study used a more comparable paradigm to the alcohol studies. It randomly assigned 90 participants to 'approach' or 'avoid' chocolate images on the AAT, and then asked them to taste and rate chocolates. A significant interaction of condition and time showed that training to avoid chocolate resulted in faster avoidance responses to chocolate images, compared with training to approach it. Consistent with Becker et al.'s Study 3, no effect was found on amounts of chocolate consumed, although a newly published study in this journal (Schumacher, Kemps, & Tiggemann, 2016) did do so. The collective evidence does not as yet provide solid basis for the application of AAT training to reduction of problematic food consumption, although clinical trials have yet to be conducted.

  19. Transmit Power Minimization and Base Station Planning for High-Speed Trains with Multiple Moving Relays in OFDMA Systems

    KAUST Repository

    Ghazzai, Hakim

    2016-03-15

    High-speed railway system equipped with moving relay stations placed on the middle of the ceiling of each train wagon is investigated. The users inside the train are served in two hops via the orthogonal frequency-division multiple access (OFDMA) technology. In this work, we first focus on minimizing the total downlink power consumption of the base station (BS) and the moving relays while respecting specific quality of service (QoS) constraints. We first derive the optimal resource allocation solution in terms of OFDMA subcarriers and power allocation using the dual decomposition method. Then, we propose an efficient algorithm based on the Hungarian method in order to find a suboptimal but low complexity solution. Moreover, we propose an OFDMA planning solution for high-speed train by finding the maximal inter-BS distance given the required user data rates in order to perform seamless handover. Our simulation results illustrate the performance of the proposed resource allocation schemes in the case of the 3GPP Long Term Evolution-Advanced (LTE-A) and compare them with previously developed algorithms as well as with the direct transmission scenario. Our results also highlight the significant planning gain obtained thanks to the use of multiple relays instead of the conventional single relay scenario.

  20. Comparative Effect of Power Training and High-Speed Yoga on Motor Function in Older Patients With Parkinson Disease.

    Science.gov (United States)

    Ni, Meng; Signorile, Joseph F; Mooney, Kiersten; Balachandran, Anoop; Potiaumpai, Melanie; Luca, Corneliu; Moore, James G; Kuenze, Christopher M; Eltoukhy, Moataz; Perry, Arlette C

    2016-03-01

    To compare the effects of power training (PWT) and a high-speed yoga program on physical performances in older patients with Parkinson disease (PD), and to test the hypothesis that both training interventions would attenuate PD symptoms and improve physical performance. Randomized controlled trial. A laboratory of neuromuscular research and active aging. Patients with PD (N=41; mean age ± SD, 72.2 ± 6.5y). Two high-speed exercise interventions (specifically designed yoga program and PWT) were given for 12 weeks (twice a week), and 1 nonexercise control group. Unified Parkinson Disease Rating Scale motor score (UPDRSMS), Berg Balance Scale (BBS), Mini-Balance Evaluation Systems Test (Mini-BESTest), Timed Up and Go, functional reach, single leg stance (SLS), postural sway test, 10-m usual and maximal walking speed tests, 1 repetition maximum (RM), and peak power (PPW) for leg press. For the posttests, both training groups showed significant improvements (Pyoga program and PWT. Both the specially designed yoga program and PWT programs can significantly improve physical performance in older persons with PD. Copyright © 2016 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

  1. Effect of 4 months of training on aerobic power, strength, and acceleration in two under-19 soccer teams.

    Science.gov (United States)

    López-Segovia, Manuel; Palao Andrés, José M; González-Badillo, Juan J

    2010-10-01

    The purpose of this study was to assess the effect of the training executed by 2 under-19 teams from the first Spanish division on aerobic power, strength, and acceleration capacity. Two under-19 soccer teams that competed in the same league were evaluated on 2 occasions. The first evaluation (E₁) was done at the beginning of the competitive period, and the second evaluation (E₂) was done 16 weeks later, coinciding with the end of the first half of the regular season. The following were evaluated: lower-body strength through jump height with countermovement with and without load (CMJ/CMJ₂₀), speed of the Smith machine bar movement in a progressive load test of full squats (FSL), acceleration capacity in 10, 20, and 30 m (T₁₀, T₂₀, T₃₀, T₁₀₋₂₀, T₁₀₋₃₀, T₂₀₋₃₀), and maximal aerobic speed (MAS). Team A executed complementary strength training, and training loads were determined with regard to the speed with which each player moved the bar in FSL. Between the evaluations, the training sessions of each team were recorded to assess their influence on the changes in E2. Team A significantly improved its MAS (p speed of movement, without the need to determine maximum repetitions is a methodology that is adequate for the improvement of the application of strength in under-19 soccer players.

  2. The Effect of Concurrent Plyometric Training Versus Submaximal Aerobic Cycling on Rowing Economy, Peak Power, and Performance in Male High School Rowers.

    Science.gov (United States)

    Egan-Shuttler, Julian D; Edmonds, Rohan; Eddy, Cassandra; O'Neill, Veronica; Ives, Stephen J

    2017-12-01

    Plyometric training has been shown to increase muscle power, running economy, and performance in athletes. Despite its use by rowing coaches, it is unknown whether plyometrics might improve rowing economy or performance. The purpose was to determine if plyometric training, in conjunction with training on the water, would lead to improved rowing economy and performance. Eighteen male high school rowers were assigned to perform 4 weeks of either plyometric training (PLYO, n = 9) or steady-state cycling below ventilatory threshold (endurance, E, n = 9), for 30 min prior to practice on the water (matched for training volume) 3 days per week. Rowing performance was assessed through a 500-m rowing time trial (TT) and peak rowing power (RP), while rowing economy (RE) was assessed by measuring the oxygen cost over four work rates (90, 120, 150, and 180 W). Rowing economy was improved in both PLYO and E (p  0.05). Finally, RP was moderately higher in the PLYO group post-training (E 569 ± 75 W, PLYO 629 ± 51 W, ES = 0.66) CONCLUSIONS: In a season when the athletes performed no rowing sprint training, 4 weeks of plyometric training improved the 500-m rowing performance and moderately improved peak power. This increase in performance may have been mediated by moderate improvements in rowing power, but not economy, and warrants further investigation.

  3. Brain-derived neurotrophic factor (BDNF) serum basal levels is not affected by power training in mobility-limited older adults - A randomized controlled trial

    DEFF Research Database (Denmark)

    Hvid, Lars G; Nielsen, Martin KF; Simonsen, Casper

    2017-01-01

    Brain-derived neurotrophic factor (BDNF) is a potential important factor involved in neuroplasticity, and may be a mediator for eliciting adaptations in neuromuscular function and physical function in older individuals following physical training. As power training taxes the neural system to a very...... not appear to be a major mechanistic factor mediating neuroplasticity in mobility-limited older adults....

  4. Femoral hernia repair

    Science.gov (United States)

    Femorocele repair; Herniorrhaphy; Hernioplasty - femoral ... During surgery to repair the hernia, the bulging tissue is pushed back in. The weakened area is sewn closed or strengthened. This repair ...

  5. Undescended testicle repair

    Science.gov (United States)

    Orchidopexy; Inguinal orchidopexy; Orchiopexy; Repair of undescended testicle; Cryptorchidism repair ... first year of life without treatment. Undescended testicle repair surgery is recommended for patients whose testicles do ...

  6. Dynamic Analysis of Fluid Power Drive-trains for Variable Speed Wind Turbines: a Parameter Study

    NARCIS (Netherlands)

    Jarquin Laguna, A.; Diepeveen, N.F.B.

    2013-01-01

    In the pursuit of making wind energy technology more economically attractive, the application of fluid power technology for the transmission of wind energy is being developed by several parties all over the world. This paper presents a dynamic model of a fluid power transmission for variable speed w

  7. Dynamic Analysis of Fluid Power Drive-trains for Variable Speed Wind Turbines: a Parameter Study

    NARCIS (Netherlands)

    Jarquin Laguna, A.; Diepeveen, N.F.B.

    2013-01-01

    In the pursuit of making wind energy technology more economically attractive, the application of fluid power technology for the transmission of wind energy is being developed by several parties all over the world. This paper presents a dynamic model of a fluid power transmission for variable speed w

  8. Bone repair and stem cells.

    Science.gov (United States)

    Ono, Noriaki; Kronenberg, Henry M

    2016-10-01

    Bones are an important component of vertebrates; they grow explosively in early life and maintain their strength throughout life. Bones also possess amazing capabilities to repair-the bone is like new without a scar after complete repair. In recent years, a substantial progress has been made in our understanding on mammalian bone stem cells. Mouse genetic models are powerful tools to understand the cell lineage, giving us better insights into stem cells that regulate bone growth, maintenance and repair. Recent findings about these stem cells raise new questions that require further investigations.

  9. Fundamental Research in Engineering Education. Identifying and Repairing Student Misconceptions in Thermal and Transport Science: Concept Inventories and Schema Training Studies

    Science.gov (United States)

    Miller, Ronald L.; Streveler, Ruth A.; Yang, Dazhi; Roman, Aidsa I. Santiago

    2011-01-01

    This paper summarizes progress on two related lines of chemical engineering education research: 1) identifying persistent student misconceptions in thermal and transport science (fluid mechanics, heat transfer, and thermodynamics); and, 2) developing a method to help students repair these misconceptions. Progress on developing the Thermal and…

  10. Fundamental Research in Engineering Education. Identifying and Repairing Student Misconceptions in Thermal and Transport Science: Concept Inventories and Schema Training Studies

    Science.gov (United States)

    Miller, Ronald L.; Streveler, Ruth A.; Yang, Dazhi; Roman, Aidsa I. Santiago

    2011-01-01

    This paper summarizes progress on two related lines of chemical engineering education research: 1) identifying persistent student misconceptions in thermal and transport science (fluid mechanics, heat transfer, and thermodynamics); and, 2) developing a method to help students repair these misconceptions. Progress on developing the Thermal and…

  11. Feasibility of eyes open alpha power training for mental enhancement in elite gymnasts

    NARCIS (Netherlands)

    Dekker, M.K.J.; van den Berg, B.R.; Denissen, A.J.M.; Sitskoorn, M.M.; van Boxtel, G.J.M.

    2014-01-01

    This study focuses on a novel, easy to use and instruction-less method for mental training in athletes. Previous findings suggest that particular mental capacities are needed for achieving peak performance; including attentional control, focus, relaxation and positive affect. Electroencephalography

  12. The Power of ROFO Principle Together with Companywide Training in Executing Lean Production Strategy

    Science.gov (United States)

    Goh, Ah Bee; Chakpitak, Nopasit; Sureephong, Pradorn

    2015-01-01

    This paper reports the findings of the case study conducted at Schaffner Thailand (ST) factory regarding the application of the ROFO principle coupled with companywide training on the execution of Lean Production (LP) strategy. The case study was motivated by 3 main objectives: 1) to examine the effectiveness of the ROFO principle and companywide…

  13. The Power of Cross-Disciplinary Teams for Developing First Responder Training in TBI

    Science.gov (United States)

    Shackelford, Jo L.; Cappiccie, Amy

    2016-01-01

    Misunderstanding of the symptoms of traumatic brain injury (TBI) often leaves first responders ill-equipped to handle encounters involving subjects with brain injury. This paper details a cross-disciplinary project to develop and disseminate a training curriculum designed to increase first responders' knowledge of and skills with TBI survivors.…

  14. The Power of Cross-Disciplinary Teams for Developing First Responder Training in TBI

    Science.gov (United States)

    Shackelford, Jo L.; Cappiccie, Amy

    2016-01-01

    Misunderstanding of the symptoms of traumatic brain injury (TBI) often leaves first responders ill-equipped to handle encounters involving subjects with brain injury. This paper details a cross-disciplinary project to develop and disseminate a training curriculum designed to increase first responders' knowledge of and skills with TBI survivors.…

  15. Strength training and detraining effects on muscular strength, anaerobic power, and mobility of inactive older men are intensity dependent

    OpenAIRE

    Fatouros, I; Kambas, A; Katrabasas, I; Nikolaidis, K; Chatzinikolaou, A; Leontsini, D; Taxildaris, K

    2005-01-01

    Background: Although strength training (ST) enhances physical function in the elderly, little is known about the effect of training intensity on training and detraining adaptations in musculoskeletal fitness.

  16. Intestinal obstruction repair

    Science.gov (United States)

    Repair of volvulus; Intestinal volvulus - repair; Bowel obstruction - repair ... Intestinal obstruction repair is done while you are under general anesthesia . This means you are asleep and DO NOT feel pain. ...

  17. Aortic aneurysm repair - endovascular

    Science.gov (United States)

    EVAR; Endovascular aneurysm repair - aorta; AAA repair - endovascular; Repair - aortic aneurysm - endovascular ... Endovascular aortic repair is done because your aneurysm is very large, growing quickly, or is leaking or bleeding. You may have ...

  18. Motorcycle Repair.

    Science.gov (United States)

    Hein, Jim; Bundy, Mike

    This motorcycle repair curriculum guide contains the following ten areas of study: brake systems, clutches, constant mesh transmissions, final drives, suspension, mechanical starting mechanisms, electrical systems, fuel systems, lubrication systems, and overhead camshafts. Each area consists of one or more units of instruction. Each instructional…

  19. Power

    DEFF Research Database (Denmark)

    Elmholdt, Claus Westergård; Fogsgaard, Morten

    2016-01-01

    In this chapter, we will explore the dynamics of power in processes of creativity, and show its paradoxical nature as both a bridge and a barrier to creativity in organisations. Recent social psychological experimental research (Slighte, de Dreu & Nijstad, 2011) on the relation between power...... and creativity suggests that when managers give people the opportunity to gain power and explicate that there is reason to be more creative, people will show a boost in creative behaviour. Moreover, this process works best in unstable power hierarchies, which implies that power is treated as a negotiable...... and floating source for empowering people in the organisation. We will explore and discuss here the potentials, challenges and pitfalls of power in relation to creativity in the life of organisations today. The aim is to demonstrate that power struggles may be utilised as constructive sources of creativity...

  20. Device-Training for Individuals with Thoracic and Lumbar Spinal Cord Injury Using a Powered Exoskeleton for Technically Assisted Mobility: Achievements and User Satisfaction.

    Science.gov (United States)

    Platz, Thomas; Gillner, Annett; Borgwaldt, Nicole; Kroll, Sylvia; Roschka, Sybille

    2016-01-01

    Objective. Results of a device-training for nonambulatory individuals with thoracic and lumbar spinal cord injury (SCI) using a powered exoskeleton for technically assisted mobility with regard to the achieved level of control of the system after training, user satisfaction, and effects on quality of life (QoL). Methods. Observational single centre study with a 4-week to 5-week intensive inpatient device-training using a powered exoskeleton (ReWalk™). Results. All 7 individuals with SCI who commenced the device-training completed the course of training and achieved basic competences to use the system, that is, the ability to stand up, sit down, keep balance while standing, and walk indoors, at least with a close contact guard. User satisfaction with the system and device-training was documented for several aspects. The quality of life evaluation (SF-12v2™) indicated that the use of the powered exoskeleton can have positive effects on the perception of individuals with SCI regarding what they can achieve physically. Few adverse events were observed: minor skin lesions and irritations were observed; no falls occurred. Conclusions. The device-training for individuals with thoracic and lumbar SCI was effective and safe. All trained individuals achieved technically assisted mobility with the exoskeleton while still needing a close contact guard.

  1. Resistance training priming activity improves upper body power output in rugby players: Implications for game day performance.

    Science.gov (United States)

    Mason, Billy R J; Argus, Christos K; Norcott, Ben; Ball, Nick

    2016-07-05

    'Priming' or pre-activation strategies performed in the hours leading into competition have been suggested to improve game day performance. Therefore, this study assessed the effectiveness of a resistance training priming activity on eliciting changes in lower- and upper-body power output, along with perceptual measures. To assess these changes, 13 state level rugby players (aged 18.5 ± 0.5 years) completed a test retest protocol using a counterbalanced crossover design. Perceptual (readiness to perform questionnaire) and performance measures (20 kg counter-movement jump (CMJ), 20 kg bench throw) were completed prior to either a control (rest) or priming activity (four sets of three banded back squats and banded bench press). Following a one hour and 45 minute recovery period, perceptual and performance measures were repeated. Readiness to perform showed no meaningful differences pre and post intervention. Bench throw peak power (8.5 ± 5.8%, 90% confidence limit; ppriming activity when compared to the control trial. CMJ peak power (3.4 ± 4.9%; p>0.05) had a small decrease following the priming activity when compared with the control trial. Therefore, completing a priming activity one hour and 45 minutes prior to competition is recommended to improve upper body power output. However, further research into lower body priming protocols should be conducted before implementing a lower body priming activity prior to competition.

  2. Turbine repair process, repaired coating, and repaired turbine component

    Energy Technology Data Exchange (ETDEWEB)

    Das, Rupak; Delvaux, John McConnell; Garcia-Crespo, Andres Jose

    2015-11-03

    A turbine repair process, a repaired coating, and a repaired turbine component are disclosed. The turbine repair process includes providing a turbine component having a higher-pressure region and a lower-pressure region, introducing particles into the higher-pressure region, and at least partially repairing an opening between the higher-pressure region and the lower-pressure region with at least one of the particles to form a repaired turbine component. The repaired coating includes a silicon material, a ceramic matrix composite material, and a repaired region having the silicon material deposited on and surrounded by the ceramic matrix composite material. The repaired turbine component a ceramic matrix composite layer and a repaired region having silicon material deposited on and surrounded by the ceramic matrix composite material.

  3. Comparison of In-Season-Specific Resistance vs. A Regular Throwing Training Program on Throwing Velocity, Anthropometry, and Power Performance in Elite Handball Players.

    Science.gov (United States)

    Hermassi, Souhail; van den Tillaar, Roland; Khlifa, Riadh; Chelly, Mohamed Souhaiel; Chamari, Karim

    2015-08-01

    The purpose of this study was to compare the effect of a specific resistance training program (throwing movement with a medicine ball) with that of regular training (throwing with regular balls) on ball velocity, anthropometry, maximal upper-body strength, and power. Thirty-four elite male team handball players (age: 18 ± 0.5 years, body mass: 80.6 ± 5.5 kg, height: 1.80 ± 5.1 m, body fat: 13.4 ± 0.6%) were randomly assigned to 1 of the 3 groups: control (n = 10), resistance training group (n = 12), or regular throwing training group (n = 12). Over the 8-week in season, the athletes performed 3 times per week according to an assigned training program alongside their normal team handball training. One repetition maximum (1RM) bench press and 1RM pullover scores assessed maximal arm strength. Anthropometry was assessed by body mass, fat percentage, and muscle volumes of upper body. Handball throwing velocity was measured by a standing throw, a throw with run, and a jump throw. Power was measured by measuring total distance thrown by a 3-kg medicine ball overhead throw. Throwing ball velocity, maximal strength, power, and muscle volume increases for the specific resistance training group after the 8 weeks of training, whereas only maximal strength, muscle volume and power and in the jump throw increases were found for the regular throwing training group. No significant changes for the control group were found. The current findings suggest that elite male handball players can improve ball velocity, anthropometrics, maximal upper-body strength, and power during the competition season by implementing a medicine ball throwing program.

  4. Health benefits of seated speed, resistance, and power training for an individual with spastic quadriplegic cerebral palsy: A case report.

    Science.gov (United States)

    Gannotti, Mary E; Fuchs, Robyn Kimberly; Roberts, Dawn E; Hobbs, Nedda; Cannon, Ian M

    2015-01-01

    Children with moderate to severe cerebral palsy are at risk for low bone mass for chronological age, which compounds risk in adulthood for progressive deformity and chronic pain. Physical activity and exercise can be a key component to optimizing bone health. In this case report we present a young adult male with non-ambulatory, spastic quadriplegia CP whom began a seated speed, resistance, and power training exercise program at age 14.5 years. Exercise program continued into adulthood as part of an active lifestyle. The individual had a history of failure to thrive, bowel and bladder incontinence, reduced bone mineral density (BMD) for age, and spinal deformity at the time exercise was initiated. Participation in the exercise program began once a week for 1.5-2 hours/session, and progressed to 3-5 times per week after two years. This exercise program is now a component of his habitual lifestyle. Over the 6 years he was followed, lumbar spine and total hip BMD Z-scores did not worsen, which may be viewed as a positive outcome given his level of gross motor impairment. Additionally, the individual reported less back pain, improved bowel and bladder control, increased energy level, and never sustained an exercise related injury. Findings from this case report suggest a regular program of seated speed, resistance, power training may promote overall well-being, are safe, and should be considered as a mechanism for optimizing bone health.

  5. Train of high-power femtosecond pulses: Probe wave in a gas of prepared atoms

    Science.gov (United States)

    Muradyan, Gevorg; Muradyan, Atom Zh.

    2009-09-01

    We present a method for generating a regular train of ultrashort optical pulses in a prepared two-level medium. The train develops from incident monochromatic probe radiation traveling in a medium of atoms, which are in a quantum mechanical superposition of dressed internal states. In the frame of linear theory for the probe radiation, the energy of individual pulses is an exponentially growing function of atom density and of interaction cross section. Pulse repetition rate is determined by the pump field’s generalized Rabi frequency and can be around 1 THz and greater. We also show that the terms, extra to the dipole approximation, endow the gas by a new property: nonsaturating dependence of refractive index on dressing monochromatic field intensity. Contribution of these nonsaturating terms can be compatible with the main dipole approximation term contribution in the wavelength region of about ten micrometers (the range of CO2 laser) or larger.

  6. Solar Collector Thermal Power System. Volume 3. Basic Study and Experimental Evaluation of Thermal Train Components

    Science.gov (United States)

    1974-11-01

    the long- lifetime compatibility of sodium and high nickel- chrome alloys (such as Inconel 600) for the thermal train subsystem, an experimental effo...close wound Nichrome V Inconel sheathed resistance heaters were vacuum furnace brazed to the evaporator sections at 1850°F using 82 Au - 18 1. ASTM B...260-BAU-4). Four Inconel sheathed chromel-alumel thermocouples were attached by resistance spot welded Inconel tabs to 40 TABLE VII SOLAR COLLECTOR

  7. PowerPlay: Training an Increasingly General Problem Solver by Continually Searching for the Simplest Still Unsolvable Problem.

    Science.gov (United States)

    Schmidhuber, Jürgen

    2013-01-01

    Most of computer science focuses on automatically solving given computational problems. I focus on automatically inventing or discovering problems in a way inspired by the playful behavior of animals and humans, to train a more and more general problem solver from scratch in an unsupervised fashion. Consider the infinite set of all computable descriptions of tasks with possibly computable solutions. Given a general problem-solving architecture, at any given time, the novel algorithmic framework PowerPlay (Schmidhuber, 2011) searches the space of possible pairs of new tasks and modifications of the current problem solver, until it finds a more powerful problem solver that provably solves all previously learned tasks plus the new one, while the unmodified predecessor does not. Newly invented tasks may require to achieve a wow-effect by making previously learned skills more efficient such that they require less time and space. New skills may (partially) re-use previously learned skills. The greedy search of typical PowerPlay variants uses time-optimal program search to order candidate pairs of tasks and solver modifications by their conditional computational (time and space) complexity, given the stored experience so far. The new task and its corresponding task-solving skill are those first found and validated. This biases the search toward pairs that can be described compactly and validated quickly. The computational costs of validating new tasks need not grow with task repertoire size. Standard problem solver architectures of personal computers or neural networks tend to generalize by solving numerous tasks outside the self-invented training set; PowerPlay's ongoing search for novelty keeps breaking the generalization abilities of its present solver. This is related to Gödel's sequence of increasingly powerful formal theories based on adding formerly unprovable statements to the axioms without affecting previously provable theorems. The continually increasing

  8. 基于风险控制的电网规化研究%Research on Baoshan 220 kV Power Grid Operation Risk Control Based On Repair Mode

    Institute of Scientific and Technical Information of China (English)

    熊伟

    2015-01-01

    According to the equipment maintenance may cause the power grid operation risk, analyze the control process of power grid operation risk from the hazard identification, risk assessment, measures, implementation measures, supervision and inspection of such links, has a good guide for effective control of power grid operation risk during the equipment repair.%针对设备检修可能造成的电网运行风险,从危害辨识、风险评估、制定措施、执行措施、监督检查等环节对电网运行风险的控制过程进行解析,对于有效控制设备检修期间的电网运行风险具有较好指导。

  9. Effects of low and high cadence interval training on power output in flat and uphill cycling time-trials.

    Science.gov (United States)

    Nimmerichter, Alfred; Eston, Roger; Bachl, Norbert; Williams, Craig

    2012-01-01

    This study tested the effects of low-cadence (60 rev min(-1)) uphill (Int(60)) or high-cadence (100 rev min(-1)) level-ground (Int(100)) interval training on power output (PO) during 20-min uphill (TT(up)) and flat (TT(flat)) time-trials. Eighteen male cyclists ([Formula: see text]: 58.6 ± 5.4 mL min(-1) kg(-1)) were randomly assigned to Int(60), Int(100) or a control group (Con). The interval training comprised two training sessions per week over 4 weeks, which consisted of six bouts of 5 min at the PO corresponding to the respiratory compensation point (RCP). For the control group, no interval training was conducted. A two-factor ANOVA revealed significant increases on performance measures obtained from a laboratory-graded exercise test (GXT) (P (max): 2.8 ± 3.0%; p < 0.01; PO and [Formula: see text] at RCP: 3.6 ± 6.3% and 4.7 ± 8.2%, respectively; p < 0.05; and [Formula: see text] at ventilatory threshold: 4.9 ± 5.6%; p < 0.01), with no significant group effects. Significant interactions between group and uphill and flat time-trial, pre- versus post-training on PO were observed (p < 0.05). Int(60) increased PO during both TT(up) (4.4 ± 5.3%) and TT(flat) (1.5 ± 4.5%). The changes were -1.3 ± 3.6, 2.6 ± 6.0% for Int(100) and 4.0 ± 4.6%, -3.5 ± 5.4% for Con during TT(up) and TT(flat), respectively. PO was significantly higher during TT(up) than TT(flat) (4.4 ± 6.0; 6.3 ± 5.6%; pre and post-training, respectively; p < 0.001). These findings suggest that higher forces during the low-cadence intervals are potentially beneficial to improve performance. In contrast to the GXT, the time-trials are ecologically valid to detect specific performance adaptations.

  10. CrowdAidRepair: A Crowd-Aided Interactive Data Repairing Method

    KAUST Repository

    Zhou, Jian

    2016-03-25

    Data repairing aims at discovering and correcting erroneous data in databases. Traditional methods relying on predefined quality rules to detect the conflict between data may fail to choose the right way to fix the detected conflict. Recent efforts turn to use the power of crowd in data repairing, but the crowd power has its own drawbacks such as high human intervention cost and inevitable low efficiency. In this paper, we propose a crowd-aided interactive data repairing method which takes the advantages of both rule-based method and crowd-based method. Particularly, we investigate the interaction between crowd-based repairing and rule-based repairing, and show that by doing crowd-based repairing to a small portion of values, we can greatly improve the repairing quality of the rule-based repairing method. Although we prove that the optimal interaction scheme using the least number of values for crowd-based repairing to maximize the imputation recall is not feasible to be achieved, still, our proposed solution identifies an efficient scheme through investigating the inconsistencies and the dependencies between values in the repairing process. Our empirical study on three data collections demonstrates the high repairing quality of CrowdAidRepair, as well as the efficiency of the generated interaction scheme over baselines.

  11. Body-building without power training : Endogenously regulated pectoral muscle hypertrophy in confined shorebirds

    NARCIS (Netherlands)

    Dietz, MW; Piersma, T; Dekinga, A

    1999-01-01

    Shorebirds such as red knots Calidris canutus routinely make migratory flights of 3000 km or more. Previous studies on this species, based on compositional analyses, suggest extensive pectoral muscle hypertrophy in addition to fat storage before take-off. Such hypertrophy could be due to power

  12. Quest3D在电力系统仿真培训中的应用%Application of Quest3D in Power System Simulation Training

    Institute of Scientific and Technical Information of China (English)

    陈伟; 方琪; 平原; 张召亮

    2013-01-01

    With the application of computer multimedia technology in power system training, power system training tends to digitize and diversification. Taking power system live line work training for an example, as an important design tool, Quest3D is introduced to power system simulation training. Quest3D is used to build a complete simulation training system. It achieves 10 kV live line replacing the pin insulator simulation training by reasonable combination of scenes, models, action figures and constraint rules.%随着计算机多媒体技术在电力系统培训中的应用,电力系统培训方式趋于数字化和多样化.以电力系统带电作业培训为例,将Quest3D作为重要设计工具引入电力系统仿真培训中,采用Quest3D搭建了一套完整的仿真培训系统,将场景、模型、人物动作和约束规则进行合理组合,实现了10 kV带电更换针式绝缘子仿真的培训.

  13. Two Consecutive Days of Crossfit Training Affects Pro and Anti-inflammatory Cytokines and Osteoprotegerin without Impairments in Muscle Power.

    Science.gov (United States)

    Tibana, Ramires A; de Almeida, Leonardo M; Frade de Sousa, Nuno M; Nascimento, Dahan da Cunha; Neto, Ivo V de Sousa; de Almeida, Jeeser A; de Souza, Vinicius C; Lopes, Maria de Fátima T P L; Nobrega, Otávio de Tolêdo; Vieira, Denis C L; Navalta, James W; Prestes, Jonato

    2016-01-01

    The aim of this study was to investigate the effects of two consecutive Crossfit® training sessions (24 h apart) designed to enhance work-capacity that involved both cardiovascular and muscular exercises on cytokines, muscle power, blood lactate and glucose. Nine male members of the CrossFit® community (age 26.7 ± 6.6 years; body mass 78.8 ± 13.2 kg; body fat 13.5 ± 6.2%; training experience 2.5 ± 1.2 years) completed two experimental protocols (24 h apart): (1) strength and power exercises, (2) gymnastic movements, and (3) metabolic conditioning as follows: 10 min of as many rounds as possible (AMRAP) of 30 double-unders and 15 power snatches (34 kg). The same sequence as repeated on session 2 with the following metabolic conditioning: 12 min AMRAP of: row 250 m and 25 target burpees. Serum interleukin-6 (IL-6), IL-10, and osteoprotegerin were measured before, immediately post and 24 h after workout of the day (WOD) 1, immediately post, 24 and 48 h after WOD 2. Peak and mean power were obtained for each repetition (back squat with 50% of 1 repetition maximum) using a linear position transducer measured before, immediately post and 24 h after WOD 1, immediately post and 24 h after WOD 2. Blood lactate and glucose were measured pre and immediately post WOD 1 and 2. Although both sessions of exercise elicited an significant increase in blood lactate (1.20 ± 0.41 to 11.84 ± 1.34 vs. 0.94 ± 0.34 to 9.05 ± 2.56 mmol/l) and glucose concentration (81.59 ± 10.27 to 114.99 ± 12.52 vs. 69.47 ± 6.97 to 89.95 ± 19.26 mg/dL), WOD 1 induced a significantly greater increase than WOD 2 (p ≤ 0.05). The training sessions elicited significant changes (p ≤ 0.05) in IL-6, IL-10 and osteoprotegerin concentration over time. IL-6 displayed an increase immediately after training WOD 1 [197 ± 109%] (p = 0.009) and 2 [99 ± 58%] (p = 0.045). IL-10 displayed an increase immediately after only WOD 1 [44 ± 52%] (p = 0.046), and decreased 24 and 48 h following WOD 2 (~40%; p

  14. The acute effect of lower-body training on average power output measured by loaded half-squat jump exercise

    Directory of Open Access Journals (Sweden)

    Matúš Krčmár

    2015-09-01

    Full Text Available Background: High muscular power output is required in many athletic endeavors in order for success to be achieved. In the scientific community postactivation potentiation and its effect on performance are often discussed. There are many studies where the effect of resistance exercise on motor performance (such as vertical jump performance and running speed has been investigated but only a few of them studied power output. Objective: The purpose of this study was to determine the acute responses to a 2 set loaded half-squat jumps and 2 set loaded back half-squat protocols designed to induce the acute maximum average power output during loaded half-squat jumps. Methods: A randomized cross-over design was used. 11 participants of this study performed 3 trials in randomized order separated by at least 48 hours where maximum average power output was measured. The specific conditioning activities were comprised of 2 sets and 4 repetitions of half-squat jumps, 2 sets and 4 repetitions of back half-squat exercises and a control protocol without an intervention by specific a conditioning activity. Participants were strength trained athletes with different sport specializations (e.g. ice-hockey, volleyball. Mean age of the athletes was 22 ± 1.8 years, body mass 80 ± 7.1 kg and body height 185 ± 6.5 cm. Analysis of variance with repeated measures was used to determine differences between pre- and post-condition in each protocol, as well as between conditioning protocols, and also effect size was used to evaluate practical significance. Results: Maximum average power was significantly enhanced after application of the half-squat jump condition protocol (1496.2 ± 194.5 to 1552 ± 196.1 W, Δ ~ 3.72%, p < .001 and after application of the back half-squat protocol (1500.7 ± 193.2 to 1556 ± 191.2 W, Δ ~ 3.68%, p < .001 after 10 min of rest. Power output after control protocol was

  15. An Analysis on The Operation,Maintenance of Power Distribution Network below 10 kv and Repair Measures%10kV及以下配网运行维护及检修措施

    Institute of Scientific and Technical Information of China (English)

    王琦

    2015-01-01

    10kV及以下的电力配网多存在于我国农村地区,这种配电网的线路多采用放射性接线方式,并且这种配电网的导线之间距离通常较短,线路之间没有设置足够的连接开关,种种因素都使得这种配网较易出现电力问题。通过分析了10kV及以下的电力配网运行维护及检修有关问题,总结10kV及以下的电力配网合理的维护及检修措施,有利于保证该类电网安全运行,有效减少电力问题及事故的发生。%Most of power distribution network below 10 kv are existing in rural areas of our country,the most of connection mode for the circuit of the distribution network is scattering,and the distance between the wires of the distribution network is short,and there is no enough link switches set between circuits,and various factors makes the distribution network vulnerable to problems related to power.This paper analyzes the problems related to the operation, maintenance and repair of power distribution network below 10 kv,and summarized the reasonable maintenance and repair measures for power distribution network below 10 kv which guarantees the safe operation of the power grid,and effectively reduce the occurrence of problems and accidents.

  16. Lower-extremity resistance training on unstable surfaces improves proxies of muscle strength, power and balance in healthy older adults: a randomised control trial.

    Science.gov (United States)

    Eckardt, Nils

    2016-11-24

    It is well documented that both balance and resistance training have the potential to mitigate intrinsic fall risk factors in older adults. However, knowledge about the effects of simultaneously executed balance and resistance training (i.e., resistance training conducted on unstable surfaces [URT]) on lower-extremity muscle strength, power and balance in older adults is insufficient. The objective of the present study was to compare the effects of machine-based stable resistance training (M-SRT) and two types of URT, i.e., machine-based (M-URT) and free-weight URT (F-URT), on measures of lower-extremity muscle strength, power and balance in older adults. Seventy-five healthy community-dwelling older adults aged 65-80 years, were assigned to three intervention groups: M-SRT, M-URT and F-URT. Over a period of ten weeks, all participants exercised two times per week with each session lasting ~60 min. Tests included assessment of leg muscle strength (e.g., maximal isometric leg extension strength), power (e.g., chair rise test) and balance (e.g., functional reach test), carried out before and after the training period. Furthermore, maximal training load of the squat-movement was assessed during the last training week. Maximal training load of the squat-movement was significantly lower in F-URT in comparison to M-SRT and M-URT. However, lower-extremity resistance training conducted on even and uneven surfaces meaningfully improved proxies of strength, power and balance in all groups. M-URT produced the greatest improvements in leg extension strength and F-URT in the chair rise test and functional reach test. Aside from two interaction effects, overall improvements in measures of lower-extremity muscle strength, power and balance were similar across training groups. Importantly, F-URT produced similar results with considerably lower training load as compared to M-SRT and M-URT. Concluding, F-URT seems an effective and safe alternative training program to mitigate

  17. [Medical-physiological characteristics of combat training of nuclear-power submarine crews].

    Science.gov (United States)

    Dovgusha, V V; Myznikov, I L; Shalabodov, S A; Bumaĭ, O K

    2009-10-01

    The article presents an observe of general questions of peculiarities of military-professional activity of submarine staff These questions are defining value in ideology of medical supply of submarine troops of NAVY in now-days conditions. The article also presents the statistics of morbidity in long termed sails for last forty years, it's dynamics by different categories of sail staff, on different stages of combat training activity in dependence of perioditation of work cycle of submarine staff The authors have examined modern condition of medical supply of submarines; have presented statistics of quality indexes of health of submarine staff The authors have formed main problems of medical supply of submarines and have proposed ways of their solving on modern stage.

  18. LACTATE AND VENTILATORY THRESHOLDS REFLECT THE TRAINING STATUS OF PROFESSIONAL SOCCER PLAYERS WHERE MAXIMUM AEROBIC POWER IS UNCHANGED

    Directory of Open Access Journals (Sweden)

    N Clark

    2003-03-01

    Full Text Available The aim of this study was to investigate maximum aerobic power (VO2 max and anaerobic threshold (AT as determinants of training status among professional soccer players. Twelve professional 1st team British male soccer players (age: 26.2 ± 3.3 years, height: 1.77 ± 0.05 m, body mass: 79.3 ± 9.4 kg agreed to participate in the study and provided informed consent. All subjects completed a combined test of anaerobic threshold (AT and maximum aerobic power on two occasions: Test 1 following 5 weeks of low level activity at the end of the off-season and Test 2 immediately following conclusion of the competitive season. AT was assessed as both lactate threshold (LT and ventilatory threshold (VT. There was no change in VO2 max between Test 1 and Test 2 (63.3 ± 5.8 ml·kg-1·min-1 vs. 62.1 ± 4.9 ml·kg-1·min-1 respectively, however, the duration of exercise tolerance (ET at VO2 max was significantly extended from Test 1 to Test 2 (204 ± 54 vs. 228 ± 68 s respectively (P<0.01. LT oxygen consumption was significantly improved in Test 2 versus Test 1 (P<0.01 VT was also improved (P<0.05. There was no significant difference in VO2 (ml·kg-1·min-1 corresponding to LT and VT. The results of this study show that VO2 max is a less sensitive indicator to changes in training status in professional soccer players than either LT or VT.

  19. Experimental study and modelling of overheating of electrical catenary-pantograph interface for trains supplied with power in station

    Science.gov (United States)

    Bausseron, Thomas; Baucour, Philippe; Glises, Raynal; Verschelde, Sylvain; Chamagne, Didier

    2015-06-01

    For railroads and trains, there have been many incidents involving catenary overheating at the contact with the pantograph when a train is supplied with power while standing still. The overheating of the catenary-pantograph interface can sometimes cause the contact wire to break. In order to anticipate the occurrence of such costly problems, the FEMTO-ST Institute has carried out theoretical and experimental studies in collaboration with the French National Railway Company (SNCF) to better understand this phenomenon. First, a 2D transient electrical model was developed for the contact wire. This allows the current distribution in the wire to be estimated to obtain an accurate measure of the internal heat generation. The heat produced by the interface was considered and split between the catenary and pantograph with an analytical model. Finally, the heat transfer equation for the wire under particular boundary conditions was solved for the entire finite difference network based on Euler's implicit method. The transient modelling results of the wire heating were compared with earlier experimental values, and a parametric study was performed.

  20. Temporal Shaping of High Peak Power Pulse Trains from a Burst-Mode Laser System

    Directory of Open Access Journals (Sweden)

    Jörg Körner

    2015-12-01

    Full Text Available It has been shown in the past that pulsed laser systems operating in the so-called “burst mode” are a beneficial approach to generate high peak power laser pulses at high repetition rates suitable for various applications. So far, most high-energy burst-mode laser systems put great effort into generating a homogeneous energy distribution across the burst duration, e.g., by shaping the pump pulse. In this work, we present a new shaping technique, which is able to produce arbitrary energy distributions within the burst by pre-shaping the seed pulse burst with a Pockels cell. Furthermore, this technique allows for the precompensation of any static modulations across the burst, which may be introduced during the subsequent amplification process. Therefore, a pulse burst with a uniform energy distribution can also be generated. The method is tested with an ultra-short pulse burst mode laser amplifier system producing bursts of a 1 ms duration with a pulse repetition rate of 1 MHz and a maximum output power of 800 W during the burst. Furthermore, a method to predict the influence of the amplifier on a non-uniformly shaped burst is presented and successfully tested to produce a pre-defined pulse shape after amplification.

  1. Repair in Mourao power plant spillway: application of recycled material concrete admixtures - stage one; Reparos no vertedouro da UHE Mourao: aplicacao de concretos com adicao de material reciclado - 1a. parte

    Energy Technology Data Exchange (ETDEWEB)

    Galvao, Jose Carlos Alves; Portella, Kleber Franke; Joukoski, Alex; Mendes, Roberto [Instituto de Tecnologia para o Desenvolvimento (LACTEC), Curitiba, PR (Brazil)], Emails: jose.galvao@lactec.org.br, portella@lactec.org.br, alex@lactec.org.br; roberto.mendes@lactec.org.br; Ferreira, Elizeu Santos [Companhia Paranaense de Energia (COPEL), Curitiba, PR (Brazil)], Email: elizeu.sf@copel.com

    2009-10-15

    The Mourao hydroelectric power plant located in the city of Campo Mourao, in the state of Parana, southern region of Brazil, was inaugurated in 1964, with 7500 kW of installed power. Defects in the spillway surface of the dam had been identified throughout the time. With the purpose of recovering the concrete hydraulic surface, repair materials were proposed in this paper, considering technology development and environment conservation. Concrete mixtures containing recycled materials - low-density polyethylene (LDPE), polyethylene terephthalate (PET) and waste tires - had its performance tested in laboratory. Mechanical properties, such as compressive strength, tensile strength and adherence were evaluated using cylindrical concrete specimens. Results were appraised and the best compositions were selected to be tested on spillway surface of Mourao dam. (author)

  2. Hybrid Electric Power Train and Control Strategies Automotive Technology Education (GATE) Program

    Energy Technology Data Exchange (ETDEWEB)

    Andrew Frank

    2006-05-31

    Plug-in hybrid electric vehicles (PHEV) offer societal benefits through their ability to displace the use of petroleum fuels. Petroleum fuels represent a polluting and politically destabilizing energy carrier. PHEV technologies can move transportation away from petroleum fuel sources by enabling domestically generated electricity and liquids bio-fuels to serve as a carrier for transportation energy. Additionally, the All-Electric-Range (AER) offered by PHEVs can significantly reduce demand for expensive and polluting liquid fuels. The GATE funding received during the 1998 through 2004 funding cycle by the UC Davis Hybrid Electric Vehicle Center (HEVC) was used to advance and train researchers in PHEV technologies. GATE funding was used to construct a rigorous PHEV curriculum, provide financial support for HEVC researchers, and provide material support for research efforts. A rigorous curriculum was developed through the UC Davis Mechanical and Aeronautical Engineering Department to train HEVC researchers. Students' research benefited from this course work by advancing the graduate student researchers' understanding of key PHEV design considerations. GATE support assisted HEVC researchers in authoring technical articles and producing patents. By supporting HEVC researchers multiple Master's theses were written as well as journal articles and publications. The topics from these publications include Continuously Variable Transmission control strategies and PHEV cross platform controls software development. The GATE funding has been well used to advance PHEV systems. The UC Davis Hybrid Electric Vehicle Center is greatly appreciative for the opportunities GATE funding provided. The goals and objectives for the HEVC GATE funding were to nourish engineering research in PHEV technologies. The funding supplied equipment needed to allow researchers to investigate PHEV design sensitivities and to further optimize system components. Over a dozen PHEV

  3. Features power ectomorphs athletes are engaged in bodybuilding in transition training

    Directory of Open Access Journals (Sweden)

    Viktor Dzhym

    2015-10-01

    Full Text Available Purpose: to develop and study the diet of athletes engaged in bodybuilding ectomorphs in transition training considering the restoration of lean body mass and functional state of an athlete Material and Methods: the study involved 18 athletes engaged in bodybuilding ectomorphs included in the national team in the Kharkiv region bodybuilding. Methods were used: the theoretical method and summarize the literature, pedagogical supervision, pedagogical experiment, methods of mathematical statistics. Results: comparative characteristics of the diet have been developed for athletes ectomorphs engaged on bodybuilding to increase muscle weight. It was divided the athletes into two experimental groups: the first EG used a balanced diet that made protein 2 grams per 1 kilogram of body weight and carbohydrates 4–5 g•kg–1 in the second EG was protein 3 grams per 1 kilogram of body weight, and carbohydrate 6 grams kg. Second EG diet consists of 6 single meal and is about 2800–3500 calories per day. Conclusions: on the basis of research by the author offered the optimal diet for athletes ektomorfiv second experimental group engaged in bodybuilding.

  4. Effects of specific resistance training program on force-velocity relationship, power consumption and work production of quadrics muscle during eccentric actions in elite athletes

    Directory of Open Access Journals (Sweden)

    KONSTANTINOS FLESSAS, MARIA KOUMPOULA, DESPINA TSOPANI, CHRALAMBOS OIKONOMOU

    2008-01-01

    Full Text Available Aim: Resistance training is the most famous method for the prevention, rehabilitation of myotendinous injuries and especially for the development of muscle’s ability in competitive and recreational sports. The purpose of the present study was to examine the average exerted force ( , the mean power consumption (Pmean and the work production on Quadriceps Femoris Muscle of elite athletes, in accordance with joint’s knee movement velocity, during eccentric contractions, before and after the application of a specific resistance training program. Methods: 14 elite athletes participated in this study. Seven of them (training group performed isometric and eccentric contractions on isokinetic dynamometer before and after the application of specific resistance training program. The other seven athletes (control group followed the training program of their team and they have participated only to the procedure of measurements. Results: The results showed, that after the application of the specific training program, the subjects improved significantly (P<.05 , Pmean (P<.05 at high angular velocities of joint’s knee movement and maximal isometric exerted force ( , P<.05. Conlusion: This study suggests that the application of the specific training program creates adaptations to the subject muscles’ which concerns the power consumption ability and the maximal effort activation.

  5. Anaerobic and aerobic peak power output and the force-velocity relationship in endurance-trained athletes: effects of aging.

    Science.gov (United States)

    Chamari, K; Ahmaidi, S; Fabre, C; Massé-Biron, J; Préfaut, C

    1995-01-01

    The aim of this investigation was to test the hypothesis that the anaerobic peak power output (Pan, peak) declines more than the peak aerobic power (Paer, peak) with increasing age. In addition, the force-velocity (F-v) relationship was studied to determine which of these two factors is primarily responsible for the expected alterations in anaerobic power. The Pan, peak, the maximal F when v is equal to zero (F0) and the maximal v when F is equal to zero (v0) were assessed by F-v test i.e. a brief intense intermittent exercise test using incremental braking forces. The Paer, peak was measured by a maximal increment exercise test. A group of 12 young athletes (YA) and 12 master athletes (MA) mean age 24.8 (SEM 1.3) and 65.1 (SEM 1.2) years, respectively, participated in this study. The YA and MA had similar body masses, heights and endurance training schedules. The results showed that Pan, peak was 42.7% lower in the older subjects, corresponding to mean values of 1089 (SEM 40) compared to 624 (SEM 33) W (t = 8.9, P Paer, peak was 35% lower with mean values of 323 (SEM 12) W for YA compared to 210 (SEM 6) W for MA (t = 8.3, P < 0.001). The mean maximal oxygen uptake was 34.7% lower with 4240 (SEM 160) ml.min-1 for YA compared to 2770 (SEM 120) ml.min-1 for MA (t = 7.2, P < 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)

  6. Use of blade pitch control to provide power train damping for the Mod-2, 2.5-mW wind turbine

    Science.gov (United States)

    Blissell, W. A., Jr.

    1995-01-01

    The Control System for the Mod-2 wind turbine system is required to provide not only for startup, RPM regulation, maximizing or regulating power, and stopping the rotor, but also for load limiting, especially in the power train. Early operations with above-rated winds revealed an instability which was caused primarily by coupling between the quill shaft and the rotor air loads. This instability caused the first of several major Mod-2 Control System changes which are reviewed in the paper.

  7. Eye muscle repair - discharge

    Science.gov (United States)

    ... Lazy eye repair - discharge; Strabismus repair - discharge; Extraocular muscle surgery - discharge ... You or your child had eye muscle repair surgery to correct eye muscle ... term for crossed eyes is strabismus. Children most often ...

  8. Ventral hernia repair

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/article/007661.htm Ventral hernia repair To use the sharing features on this page, please enable JavaScript. Ventral hernia repair is surgery to repair a ventral hernia. ...

  9. Brain aneurysm repair

    Science.gov (United States)

    ... aneurysm repair; Dissecting aneurysm repair; Endovascular aneurysm repair - brain; Subarachnoid hemorrhage - aneurysm ... Your scalp, skull, and the coverings of the brain are opened. A metal clip is placed at ...

  10. Dynamic characteristics and sensitivities analysis of a power turret gear train

    Institute of Scientific and Technical Information of China (English)

    Xu Lijiao; Chen Nan

    2014-01-01

    The dynamic transmission characteristics and the sensitivities of the three stage idler gear system of the new NC power turret are studied in the paper. Considering the strongly nonlinear factors such as the periodically time-varying mesh stiffness, the nonlinear tooth backlash, the lump-parameter model of the gear system is developed with one rotational and two translational freedoms of each gear. The eigen-values and eigenvectors are derived and analyzed on the basis of the real modal theory. The sensitivities of natural frequencies to design parameters including supporting and meshing stiffnesses, gear masses, and moments of inertia by the direct differential method are also calculated. The results show the quantitative and qualitative impact of the parameters to the natural characteristics of the gear system. Furthermore, the periodic steady state solutions are obtained by the numerical approach based on the nonlinear model. These results are employed to gain insights into the primary controlling parameters, to forecast the severity of the dynamic response, and to assess the acceptability of the gear design.

  11. Effects of combined endurance and strength training on muscle strength, power and hypertrophy in 40-67-year-old men.

    Science.gov (United States)

    Karavirta, L; Häkkinen, A; Sillanpää, E; García-López, D; Kauhanen, A; Haapasaari, A; Alen, M; Pakarinen, A; Kraemer, W J; Izquierdo, M; Gorostiaga, E; Häkkinen, K

    2011-06-01

    Both strength and endurance training have several positive effects on aging muscle and physical performance of middle-aged and older adults, but their combination may compromise optimal adaptation. This study examined the possible interference of combined strength and endurance training on neuromuscular performance and skeletal muscle hypertrophy in previously untrained 40-67-year-old men. Maximal strength and muscle activation in the upper and lower extremities, maximal concentric power, aerobic capacity and muscle fiber size and distribution in the vastus lateralis muscle were measured before and after a 21-week training period. Ninety-six men [mean age 56 (SD 7) years] completed high-intensity strength training (S) twice a week, endurance training (E) twice a week, combined training (SE) four times per week or served as controls (C). SE and S led to similar gains in one repetition maximum strength of the lower extremities [22 (9)% and 21 (8)%, Pmuscle fibers only increased in S [26 (22)%, P=0.002], while SE showed an inconsistent, non-significant change [8 (35)%, P=0.73]. Combined training may interfere with muscle hypertrophy in aging men, despite similar gains in maximal strength between the strength and the combined training groups. © 2009 John Wiley & Sons A/S.

  12. Simulation Training System Construction of Thermal Power Station%火电机组仿真培训体系的建设

    Institute of Scientific and Technical Information of China (English)

    王玉文; 聂玉强

    2016-01-01

    随着火电机组自动化程度的不断提高,对集控运行人员的操控能力提出了更高、更新的要求。仿真培训由于它独特的培训方式,越来越受到火电企业的青睐。完善的仿真培训体系确保了仿真培训的实施和培训效果。本文阐述,仿真培训体系的建设可以从两方面入手,一方面是要确保开发一套与现场高逼真度仿真系统,来满足仿真培训的硬件需求;另一方面是要加强仿真培训教练员的培养和仿真培训管理制度的建设,才能确保仿真培训的效果,按质按量地培训工作。%With the automation development of thermal power station , the requirements of centralized con-trol operators are updated .More thermal power companies are interested in simulation training system due to its unique training methods .The complete simulation training system can ensure the simulation training application and performance .This paper proposes that simulation training system construction can start with two fields.First, a high fidelity simulation system shall be developed to ensure the training hardware requirements .Secondly , the training of simulation trainers and the systems of simulation training manage -ments shall be enhanced to ensure the simulation training performance with necessary quality and quantity .

  13. Effectiveness of Functional Power Training on Walking Ability in Young Children With Cerebral Palsy : Study Protocol of a Double-Baseline Trial

    NARCIS (Netherlands)

    van Vulpen, Liesbeth F; de Groot, Sonja; Rameckers, Eugene A A; Becher, Jules G; Dallmeijer, Annet J

    PURPOSE: To evaluate the effect of functional high-velocity resistance (power) training to improve walking ability of young children with cerebral palsy. METHODS: Twenty-two children with bi- or unilateral spastic cerebral palsy, Gross Motor Function Classification System levels I and II, aged 4 to

  14. The Effect of Eight Weeks Plyometric Training on Anaerobic Power, Counter Movement Jumping and Isokinetic Strength in 15-18 Years Basketball Players

    Science.gov (United States)

    Adigüzel, Niyazi Sidki; Günay, Mehmet

    2016-01-01

    The purpose of this study was to investigate the effect of eight weeks plyometric training on anaerobic power, counter movement jumping and isokinetic strength in 15-18 years aged basketball players. This study was including 30 male Basketball players. The subjects were divided into two groups as: the experimental group (n = 15) and the control…

  15. Power-Knowledge and Tour Guide Training: Capitalistic Domination, Utopian Visions and the Creation and Negotiation of UNESCO’s Homo Turismos in Macao

    NARCIS (Netherlands)

    Ong, C.E.; Ryan, C.; McIntosh, A.M.

    2014-01-01

    This paper offers insights into the power-knowledge situations within tour guide training in Macao and queries the associated embedded capitalistic domination and utopian pressures. Drawing upon a tour guide trainer’s autoethnography, ethnography within the classroom, life and work history interview

  16. The Effects of High-Intensity versus Low-Intensity Resistance Training on Leg Extensor Power and Recovery of Knee Function after ACL-Reconstruction

    DEFF Research Database (Denmark)

    Bieler, Theresa; Sobol, Nanna Aue; Andersen, Lars L

    2014-01-01

    OBJECTIVE: Persistent weakness is a common problem after anterior cruciate ligament- (ACL-) reconstruction. This study investigated the effects of high-intensity (HRT) versus low-intensity (LRT) resistance training on leg extensor power and recovery of knee function after ACL-reconstruction. METH...

  17. Effects of Resistance Training on Lower-Extremity Muscle Power in Middle-Aged and Older Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

    Science.gov (United States)

    Straight, Chad R; Lindheimer, Jacob B; Brady, Anne O; Dishman, Rodney K; Evans, Ellen M

    2016-03-01

    Resistance training (RT) has been investigated as a potential intervention strategy for improving muscle function, but the effects on lower-extremity muscle power in middle-aged and older adults have not been systematically reviewed. The aim of this meta-analysis is to provide a quantitative estimate of the effect of RT on lower-extremity muscle power in middle-aged and older adults and to examine independent moderators of this relationship. Randomized controlled trials that examined the effects of RT on either leg press (LP) or knee extension (KE) muscle power in adults aged ≥50 years were included. Data were aggregated with meta-analytic techniques, and multi-level modeling was used to adjust for nesting effects. A total of 52 effects from 12 randomized controlled trials were analyzed with a random-effects model to estimate the effect of RT on lower-extremity muscle power. A multiple-regression analysis was conducted to examine independent moderators of the mean effect. The adjusted aggregated results from all studies indicate that RT has a small-to-moderate effect on lower-extremity muscle power (Hedges' d = 0.34, 95% confidence interval [CI] 0.25-0.43), which translated to 54.90 watts (95 % CI 40.37-69.43). Meta-regression analyses indicated that high-velocity RT was superior to traditional RT (Δ = 0.62 vs. 0.20, respectively) for increasing lower-extremity muscle power. In addition, training volume significantly moderated the effect of RT on muscle power. The findings from this meta-analysis indicate that RT is an efficacious intervention strategy for improving LP and KE muscle power in adults aged ≥50 years. Training mode and volume independently moderate the effect of RT on lower-extremity muscle power, and should be considered when prescribing RT exercise for middle-aged and older adults.

  18. "Dedicated To The Continued Education, Training and Demonstration of PEM Fuel Cell Powered Lift Trucks In Real-World Applications."

    Energy Technology Data Exchange (ETDEWEB)

    Dever, Thomas J.

    2011-11-29

    The project objective was to further assist in the commercialization of fuel cell and H2 technology by building further upon the successful fuel cell lift truck deployments that were executed by LiftOne in 2007, with longer deployments of this technology in real-world applications. We involved facilities management, operators, maintenance personnel, safety groups, and Authorities Having Jurisdiction. LiftOne strived to educate a broad group from many areas of industry and the community as to the benefits of this technology. Included were First Responders from the local areas. We conducted month long deployments with end-users to validate the value proposition and the market requirements for fuel cell powered lift trucks. Management, lift truck operators, Authorities Having Jurisdiction and the general public experienced 'hands on' fuel cell experience in the material handling applications. We partnered with Hydrogenics in the execution of the deployment segment of the program. Air Products supplied the compressed H2 gas and the mobile fueler. Data from the Fuel Cell Power Packs and the mobile fueler was sent to the DOE and NREL as required. Also, LiftOne conducted the H2 Education Seminars on a rotating basis at their locations for lift trucks users and for other selected segments of the community over the project's 36 month duration. Executive Summary The technology employed during the deployments program was not new, as the equipment had been used in several previous demos and early adoptions within the material handling industry. This was the case with the new HyPx Series PEM - Fuel Cell Power Packs used, which had been demo'd before during the 2007 Greater Columbia Fuel Cell Challenge. The Air Products HF-150 Fueler was used outdoors during the deployments and had similarly been used for many previous demo programs. The methods used centered on providing this technology as the power for electric sit-down lift trucks at high profile companies

  19. 供电和供水系统关联失效动力学模型及修复策略%Interdependent Dynamic Model and Repairing Strategy of Electric Power and Water Supply Systems

    Institute of Scientific and Technical Information of China (English)

    张超; 韩传峰; 孟令鹏; 汪云峰

    2012-01-01

    将供电和供水系统抽象为并质网络,依据节点间功能传输关系,构建关联失效动力学模型,研究关联作用条件下,节点失效的动力学演化特征.综合考虑供电、供水机构收益损失、修复费用和电、水缺失造成的用户损失,建立了修复策略规划模型,并应用多阶段决策和遗传算法提出求解最优策略的一般方法.仿真结果表明,少量节点物理失效极易引起大量节点功能失效;相同物理失效发生在不同时刻,造成的损失存在差异,对应最优修复策略不同.%Electric power and water supply infrastructures are coupled heterogeneous networks. Base on the function dependency between nodes, a dynamic model is developed to describe the failure propagation process with electric-water interactions. Simulation result shows that physical failure of limited number of nodes may cause functional failures of large number of nodes. Considering the suppliers' revenue loss, repairing cost and user's loss, we propose a planning model of repair strategy, and provide a general method to solve the model and develop optimal strategy using multistage decision-making and genetic algorithm. To a given cluster of nodes the optimal repair strategy is different when the failure time changes.

  20. Safety training and safe operating procedures written for PBFA (Particle Beam Fusion Accelerator) II and applicable to other pulsed power facilities

    Energy Technology Data Exchange (ETDEWEB)

    Donovan, G.L.; Goldstein, S.A.

    1986-12-01

    To ensure that work in advancing pulsed power technology is performed with an acceptably low risk, pulsed power research facilities at Sandia National Laboratories must satisfy general safety guidelines established by the Department of Energy, policies and formats of the Environment, Safety, and Health (ES and H) Department, and detailed procedures formulated by the Pulsed Power Sciences Directorate. The approach to safety training and to writing safe operating procedures, and the procedures presented here are specific to the Particle Beam Fusion Accelerator II (PBFA II) Facility but are applicable as guidelines to other research and development facilities which have similar hazards.

  1. Interaction of Beta-Hydroxy-Beta-Methylbutyrate Free Acid and Adenosine Triphosphate on Muscle Mass, Strength, and Power in Resistance Trained Individuals.

    Science.gov (United States)

    Lowery, Ryan P; Joy, Jordan M; Rathmacher, John A; Baier, Shawn M; Fuller, John C; Shelley, Mack C; Jäger, Ralf; Purpura, Martin; Wilson, Stephanie M C; Wilson, Jacob M

    2016-07-01

    Lowery, RP, Joy, JM, Rathmacher, JA, Baier, SM, Fuller, JC Jr, Shelley, MC II, Jäger, R, Purpura, M, Wilson, SMC, and Wilson, JM. Interaction of beta-hydroxy-beta-methylbutyrate free acid and adenosine triphosphate on muscle mass, strength, and power in resistance trained individuals. J Strength Cond Res 30(7): 1843-1854, 2016-Adenosine-5'-triphosphate (ATP) supplementation helps maintain performance under high fatiguing contractions and with greater fatigue recovery demands also increase. Current evidence suggests that the free acid form of β-hydroxy-β-methylbutyrate (HMB-FA) acts by speeding regenerative capacity of skeletal muscle after high-intensity or prolonged exercise. Therefore, we investigated the effects of 12 weeks of HMB-FA (3 g) and ATP (400 mg) administration on lean body mass (LBM), strength, and power in trained individuals. A 3-phase double-blind, placebo-, and diet-controlled study was conducted. Phases consisted of an 8-week periodized resistance training program (phase 1), followed by a 2-week overreaching cycle (phase 2), and a 2-week taper (phase 3). Lean body mass was increased by a combination of HMB-FA/ATP by 12.7% (p jump and Wingate power were increased in the HMB-FA/ATP-supplemented group compared with the placebo-supplemented group, and the 12-week increases were 21.5 and 23.7%, respectively. During the overreaching cycle, strength and power declined in the placebo group (4.3-5.7%), whereas supplementation with HMB-FA/ATP resulted in continued strength gains (1.3%). In conclusion, HMB-FA and ATP in combination with resistance exercise training enhanced LBM, power, and strength. In addition, HMB-FA plus ATP blunted the typical response to overreaching, resulting in a further increase in strength during that period. It seems that the combination of HMB-FA/ATP could benefit those who continuously train at high levels such as elite athletes or military personnel.

  2. Power training and postmenopausal hormone therapy affect transcriptional control of specific co-regulated gene clusters in skeletal muscle

    Science.gov (United States)

    Fey, Vidal; Törmäkangas, Timo; Ronkainen, Paula H. A.; Taaffe, Dennis R.; Takala, Timo; Koskinen, Satu; Cheng, Sulin; Puolakka, Jukka; Kujala, Urho M.; Suominen, Harri; Sipilä, Sarianna; Kovanen, Vuokko

    2010-01-01

    At the moment, there is no clear molecular explanation for the steeper decline in muscle performance after menopause or the mechanisms of counteractive treatments. The goal of this genome-wide study was to identify the genes and gene clusters through which power training (PT) comprising jumping activities or estrogen containing hormone replacement therapy (HRT) may affect skeletal muscle properties after menopause. We used musculus vastus lateralis samples from early stage postmenopausal (50–57 years old) women participating in a yearlong randomized double-blind placebo-controlled trial with PT and HRT interventions. Using microarray platform with over 24,000 probes, we identified 665 differentially expressed genes. The hierarchical clustering method was used to assort the genes. Additionally, enrichment analysis of gene ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways was carried out to clarify whether assorted gene clusters are enriched with particular functional categories. The analysis revealed transcriptional regulation of 49 GO/KEGG categories. PT upregulated transcription in “response to contraction”—category revealing novel candidate genes for contraction-related regulation of muscle function while HRT upregulated gene expression related to functionality of mitochondria. Moreover, several functional categories tightly related to muscle energy metabolism, development, and function were affected regardless of the treatment. Our results emphasize that during the early stages of the postmenopause, muscle properties are under transcriptional modulation, which both PT and HRT partially counteract leading to preservation of muscle power and potentially reducing the risk for aging-related muscle weakness. More specifically, PT and HRT may function through improving energy metabolism, response to contraction as well as by preserving functionality of the mitochondria. Electronic supplementary material The online version of this

  3. A system-level mathematical model for evaluation of power train performance of load-leveled electric-vehicles

    Science.gov (United States)

    Purohit, G. P.; Leising, C. J.

    1984-01-01

    The power train performance of load leveled electric vehicles can be compared with that of nonload leveled systems by use of a simple mathematical model. This method of measurement involves a number of parameters including the degree of load leveling and regeneration, the flywheel mechanical to electrical energy fraction, and efficiencies of the motor, generator, flywheel, and transmission. Basic efficiency terms are defined and representative comparisons of a variety of systems are presented. Results of the study indicate that mechanical transfer of energy into and out of the flywheel is more advantageous than electrical transfer. An optimum degree of load leveling may be achieved in terms of the driving cycle, battery characteristics, mode of mechanization, and the efficiency of the components. For state of the art mechanically coupled flyheel systems, load leveling losses can be held to a reasonable 10%; electrically coupled systems can have losses that are up to six times larger. Propulsion system efficiencies for mechanically coupled flywheel systems are predicted to be approximately the 60% achieved on conventional nonload leveled systems.

  4. Integrated Electrical Wire Insulation Repair System

    Science.gov (United States)

    Williams, Martha; Jolley, Scott; Gibson, Tracy; Parks, Steven

    2013-01-01

    An integrated system tool will allow a technician to easily and quickly repair damaged high-performance electrical wire insulation in the field. Low-melt polyimides have been developed that can be processed into thin films that work well in the repair of damaged polyimide or fluoropolymer insulated electrical wiring. Such thin films can be used in wire insulation repairs by affixing a film of this low-melt polyimide to the damaged wire, and heating the film to effect melting, flow, and cure of the film. The resulting repair is robust, lightweight, and small in volume. The heating of this repair film is accomplished with the use of a common electrical soldering tool that has been modified with a special head or tip that can accommodate the size of wire being repaired. This repair method can furthermore be simplified for the repair technician by providing replaceable or disposable soldering tool heads that have repair film already "loaded" and ready for use. The soldering tool heating device can also be equipped with a battery power supply that will allow its use in areas where plug-in current is not available

  5. 核电厂可修设备失效数据的处理方法%Failure Data Process Considering Trend of Failure Rate for Repairable Equipments in Nuclear Power Plants

    Institute of Scientific and Technical Information of China (English)

    王大林; 刘井泉; 黄祥瑞

    2011-01-01

    To solve the problem of failure data processing for reliability assessment for repairable facilities in nuclear power plants,a improved approach based on the renewal theory,trend testing and Weibull process(a kind of NHP)is proposed. After analyzing the error risk of traditional life data processing methods,an actual example is calculated based on the failure data of water-cooling pumps in generator stator at some nuclear power stations to compare the two processing methods. The result proves that Weibull process fitting reflects the failure characteristics of repairable equipments failures with less complicate calculation process.%针对核电厂设备可靠性评估对失效数据处理的需求,基于统计的经典寿命数据处理方法分析了核电厂可修设备失效数据处理中的缺点,提出应用基于威布尔( Weibull)过程的数据处理方法处理可修设备现场数据,并以某核电厂定子冷却水用泵失效数据为例进行了实例计算,对两种方法处理结果进行了比较分析.计算证明,引入威布尔过程拟合数据处理方法可更好地符合可修设备失效特点,且计算过程不复杂.

  6. Hand function after nerve repair.

    Science.gov (United States)

    Lundborg, G; Rosén, B

    2007-02-01

    Treatment of injuries to major nerve trunks in the hand and upper extremity remains a major and challenging reconstructive problem. Such injuries may cause long-lasting disabilities in terms of lost fine sensory and motor functions. Nowadays there is no surgical repair technique that can ensure recovery of tactile discrimination in the hand of an adult patient following nerve repair while very young individuals usually regain a complete recovery of functional sensibility. Post-traumatic nerve regeneration is a complex biological process where the outcome depends on multiple biological and environmental factors such as survival of nerve cells, axonal regeneration rate, extent of axonal misdirection, type of injury, type of nerve, level of the lesion, age of the patient and compliance to training. A major problem is the cortical functional reorganization of hand representation which occurs as a result of axonal misdirection. Although protective sensibility usually occurs following nerve repair, tactile discriminative functions seldom recover--a direct result of cortical remapping. Sensory re-education programmes are routinely applied to facilitate understanding of the new sensory patterns provided by the hand. New trends in hand rehabilitation focus on modulation of central nervous processes rather than peripheral factors. Principles are being evolved to maintain the cortical hand representation by using the brain capacity for visuo-tactile and audio-tactile interaction for the initial phase following nerve injury and repair (phase 1). After the start of the re-innervation of the hand (phase 2), selective de-afferentation, such as cutaneous anaesthesia of the forearm of the injured hand, allows expansion of the nerve-injured cortical hand representation, thereby enhancing the effects of sensory relearning. Recent data support the view that training protocols specifically addressing the relearning process substantially increase the possibilities for improved

  7. DNA repair. [UV radiation

    Energy Technology Data Exchange (ETDEWEB)

    Setlow, R.

    1978-01-01

    Some topics discussed are as follows: difficulty in extrapolating data from E. coli to mammalian systems; mutations caused by UV-induced changes in DNA; mutants deficient in excision repair; other postreplication mechanisms; kinds of excision repair systems; detection of repair by biochemical or biophysical means; human mutants deficient in repair; mutagenic effects of UV on XP cells; and detection of UV-repair defects among XP individuals. (HLW)

  8. Structural elements of mechanical engineering 2. Power train elements. 6. ed.; Konstruktionselemente des Maschinenbaus 2. Grundlagen von Maschinenelementen fuer Antriebsaufgaben

    Energy Technology Data Exchange (ETDEWEB)

    Steinhilper, W. [Kaiserslautern Univ. (Germany). Lehrstuhl fuer Maschinenelemente und Getriebetechnik; Sauer, B. (eds.) [Technische Univ. Kaiserslautern (Germany). Lehrstuhl fuer Maschinenelemente und Getriebetechnik

    2008-07-01

    The Steinhilper/Roeper textbooks have become standard textbooks of German technical universities. This is the 6th edition, published under the new name 'Structural elements of mechanical engineering' by Steinhilper/Sauer, a renowned team of expert authors, has been completely revised and re-edited. In Vol. 2, the standard chapters on friction, wear, lubrication, bearings, sliding bearings, rolling bearings, and seals, have been completely updated. There are new chapters on: Power train systems, transmission systems and brakes, toothed gears and toothed gear drives, traction drives, friction transmission, sensors and actuators. The two-volume textbook covers the whole spectrum of typical elements of mechanical engineering. The information, much of which goes deeper than just basic knowledge, addresses students of universities and technical universities. This makes the book also a useful reference manual for the daily work of practical engineers. (orig.) [German] Die Baende der Maschinen- und Konstruktionselemente von Steinhilper/Roeper haben sich als Standard-Lehrbuecher an Technischen Hochschulen durchgesetzt. Unter dem Titel Steinhilper/Sauer: Konstruktionselemente des Maschinenbaus wurde das Werk von einem ausgewiesenen Autorenteam aktualisiert und grundlegend ueberarbeitet. Im vorliegenden Band 2 sind die bisherigen Kapitel Reibung, Verschleiss und Schmierung, Lagerungen, Gleitlager und Waelzlager sowie Dichtungen komplett ueberarbeitet. Neu hinzu gekommen sind: Einfuehrung in Antriebssysteme, Kupplungen und Bremsen, Zahnraeder und Zahnradgetriebe, Zugmittelgetriebe, Reibradgetriebe sowie Sensoren und Aktoren. Die 6. Auflage stellt eine aktualisierte und berichtigte Fassung dar. Die beiden Baende des Lehrwerks umfassen das gesamte Spektrum der typischen Konstruktions- und Maschinenelemente. Die Inhalte sind auf die Ausbildung an Universitaeten und Technischen Hochschulen abgestimmt und gehen teilweise ueber das Grundlagenwissen hinaus. So stellen die

  9. The acute effect of upper-body complex training on power output of martial art athletes as measured by the bench press throw exercise.

    Science.gov (United States)

    Liossis, Loudovikos Dimitrios; Forsyth, Jacky; Liossis, Ceorge; Tsolakis, Charilaos

    2013-12-18

    The purpose of this study was to examine the acute effect of upper body complex training on power output, as well as to determine the requisite preload intensity and intra-complex recovery interval needed to induce power output increases. Nine amateur-level combat/martial art athletes completed four distinct experimental protocols, which consisted of 5 bench press repetitions at either: 65% of one-repetition maximum (1RM) with a 4 min rest interval; 65% of 1RM with an 8 min rest; 85% of 1RM with a 4 min rest; or 85% of 1RM with an 8 min rest interval, performed on different days. Before (pre-conditioning) and after (post-conditioning) each experimental protocol, three bench press throws at 30% of 1RM were performed. Significant differences in power output pre-post conditioning were observed across all experimental protocols (F=26.489, partial eta2=0.768, p=0.001). Mean power output significantly increased when the preload stimulus of 65% 1RM was matched with 4 min of rest (p=0.001), and when the 85% 1RM preload stimulus was matched with 8 min of rest (p=0.001). Moreover, a statistically significant difference in power output was observed between the four conditioning protocols (F= 21.101, partial eta(2)=0.913, p=0.001). It was concluded that, in complex training, matching a heavy preload stimulus with a longer rest interval, and a lighter preload stimulus with a shorter rest interval is important for athletes wishing to increase their power production before training or competition.

  10. Maximal power training induced different improvement in throwing velocity and muscle strength according to playing positions in elite male handball players.

    Science.gov (United States)

    Cherif, M; Chtourou, H; Souissi, N; Aouidet, A; Chamari, K

    2016-12-01

    This study was designed to assess the effect of strength and power training on throwing velocity and muscle strength in handball players according to their playing positions. Twenty-two male handball players were assigned to either an experimental group (n=11) or a control group (n=11) (age: 22.1 ± 3.0 years). They were asked to complete (i) the ball throwing velocity test and (ii) the one-repetition maximum (1-RM) tests for the half-back squat, the pull-over, the bench press, the developed neck, and the print exercises before and after 12 weeks of maximal power training. The training was designed to improve strength and power with an intensity of 85-95% of the 1RM. In addition to their usual routine handball training sessions, participants performed two sessions per week. During each session, they performed 3-5 sets of 3-8 repetitions with 3 min of rest in between. Then, they performed specific shots (i.e., 12 to 40). Ball-throwing velocity (p<0.001) was higher after the training period in rear line players (RL). The training programme resulted in an improvement of 1RM bench press (p<0.001), 1RM developed neck (p<0.001) and 1RM print (p<0.001) in both front line (FL) and RL. The control group showed a significant improvement only in ball-throwing velocity (p<0.01) and 1RM bench press (p<0.01) in RL. A significantly greater improvement was found in ball-throwing velocity (p<0.001), 1RM bench press (p<0.001), and 1RM half-back squat exercises in players of the central axis (CA) compared to the lateral axis (LA) (p<0.01). The power training programme induced significantly greater increases in ball-throwing velocity and muscle strength in FL than RL and in CA than LA axis players.

  11. 电源装备战场抢修研究%Study on Battlefield Damage Assessment and Repair of Power Equipment

    Institute of Scientific and Technical Information of China (English)

    赵静; 王小双

    2014-01-01

    在分析电源装备维修保障和战场抢修体制的基础上,提出了电源装备战场损伤等级划分方法。研究探讨了电源装备损伤评估一般程序和方法,介绍了电源装备通用的战场修复方法,明确了电源战场抢修研究的发展趋势,对通指装备战场抢修体制的创新和电源装备损伤评估与修复的研究具有一定的参考价值。%Based on analysis of Power Equipment Maintenance Support and BDAR system , Power Equipment battlefield damage grade classification was proposed .BDAR of Power Equipment was studied , including discussion simple program and method of battlefield damage assessment ,introduction common battlefield damage method , defi-nition the development prospects .It was valuable to communication system innovation and BDAR of Power Equip-ment study .

  12. CRH2型动车组辅助电源系统故障分析%Fault analysis of auxiliary power system in CRH2 bullet train

    Institute of Scientific and Technical Information of China (English)

    李向超; 王亦军

    2013-01-01

    探讨了300 km速度级CRH2C型动车组辅助电源系统的供电电压、工作原理以及内部构成。针对CRH2C型动车组辅助电源系统的常见故障,分析了故障发生的原因,并提出了有效的应急处理措施。%The supply voltage, working principle and internal structure of auxiliary power supply system in 300 km/h grade CRH2C bullet train are discussed. The common fault causes of auxiliary power supply system in CRH2C bullet train are analyzed. The effective emergent measures for the fault treatment are put forward.

  13. Using a smart wheelchair as a gaming device for floor-projected games: a mixed-reality environment for training powered-wheelchair driving skills.

    Science.gov (United States)

    Secoli, R; Zondervan, D; Reinkensmeyer, D

    2012-01-01

    For children with a severe disability, such as can arise from cerebral palsy, becoming independent in mobility is a critical goal. Currently, however, driver's training for powered wheelchair use is labor intensive, requiring hand-over-hand assistance from a skilled therapist to keep the trainee safe. This paper describes the design of a mixed reality environment for semi-autonomous training of wheelchair driving skills. In this system, the wheelchair is used as the gaming input device, and users train driving skills by maneuvering through floor-projected games created with a multi-projector system and a multi-camera tracking system. A force feedback joystick assists in steering and enhances safety.

  14. Improvement of Repeated-Sprint Ability and Horizontal-Jumping Performance in Elite Young Basketball Players With Low-Volume Repeated-Maximal-Power Training.

    Science.gov (United States)

    Gonzalo-Skok, Oliver; Tous-Fajardo, Julio; Arjol-Serrano, José Luis; Suarez-Arrones, Luis; Casajús, José Antonio; Mendez-Villanueva, Alberto

    2016-05-01

    To examine the effects of a low-volume repeated-power-ability (RPA) training program on repeated-sprint and change-of- direction (COD) ability and functional jumping performance. Twenty-two male elite young basketball players (age 16.2 ± 1.2 y, height 190.0 ± 10.0 cm, body mass 82.9 ± 10.1 kg) were randomly assigned either to an RPA-training group (n = 11) or a control group (n = 11). RPA training consisted of leg-press exercise, twice a week for 6 wk, of 1 or 2 blocks of 5 sets × 5 repetitions with 20 s of passive recovery between sets and 3 min between blocks with the load that maximized power output. Before and after training, performance was assessed by a repeated-sprint-ability (RSA) test, a repeated-COD-ability test, a hop for distance, and a drop jump followed by tests of a double unilateral hop with the right and left legs. Within-group and between-groups differences showed substantial improvements in slowest (RSAs) and mean time (RSAm) on RSA; best, slowest and mean time on repeated-COD ability; and unilateral right and left hop in the RPA group in comparison with control. While best time on RSA showed no improvement in any group, there was a large relationship (r = .68, 90% CI .43;.84) between the relative decrement in RSAm and RSAs, suggesting better sprint maintenance with RPA training. The relative improvements in best and mean repeated-COD ability were very largely correlated (r = .89, 90% CI .77;.94). Six weeks of lowvolume (4-14 min/wk) RPA training improved several physical-fitness tests in basketball players.

  15. The effect of rotator cuff repair on early overhead shoulder function: a study in 1600 consecutive rotator cuff repairs.

    Science.gov (United States)

    Robinson, Hayden A; Lam, Patrick H; Walton, Judie R; Murrell, George A C

    2017-01-01

    Rotator cuff tears are often surgically repaired, generally with good results. However, repairs not infrequently retear, and how important repair integrity is with respect to early functional outcomes after rotator cuff repair is unclear. Thus, the purpose of this study was to determine the effect of a retear on overhead activities in a large cohort of patients after rotator cuff repair. This was a retrospective cohort study of prospectively collected data from 1600 consecutive rotator cuff repairs. Outcomes were based on patient responses to the L'Insalata Shoulder Questionnaire and findings on examination preoperatively and at 6 months of follow-up. Repair integrity was determined by ultrasound imaging at the 6-month follow-up visit. The 1600 patients (885 men, 715 women) were a mean age of 58 years. Postoperative ultrasound imaging found 13% (211 of 1600) of repairs had retorn. Significant improvements were seen irrespective of rotator cuff integrity in pain levels with overhead activity (P rotation strength (P rotator cuff repair integrity on shoulder function. Patients who had an arthroscopic rotator cuff repair reported significant improvements in overhead pain levels irrespective of the repair integrity at 6 months. Repair integrity influenced supraspinatus and external rotation power, where patients with intact repairs were stronger than those with a retear. Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

  16. Sensitivity of sensor-based sit-to-stand peak power to the effects of training leg strength, leg power and balance in older adults

    NARCIS (Netherlands)

    Regterschot, G Ruben H; Folkersma, Marjanne; Zhang, Wei; Baldus, Heribert; Stevens, Martin; Zijlstra, Wiebren

    2014-01-01

    Increasing leg strength, leg power and overall balance can improve mobility and reduce fall risk. Sensor-based assessment of peak power during the sit-to-stand (STS) transfer may be useful for detecting changes in mobility and fall risk. Therefore, this study investigated whether sensor-based STS pe

  17. 49 CFR 236.833 - Train, opposing.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Train, opposing. 236.833 Section 236.833..., MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.833 Train, opposing. A train, the movement of which is in a direction opposite to and toward another train...

  18. Effects of 4-Week Training Intervention with Unknown Loads on Power Output Performance and Throwing Velocity in Junior Team Handball Players.

    Directory of Open Access Journals (Sweden)

    Rafael Sabido

    Full Text Available To compare the effect of 4-week unknown vs known loads strength training intervention on power output performance and throwing velocity in junior team handball players.Twenty-eight junior team-handball players (17.2 ± 0.6 years, 1.79 ± 0.07 m, 75.6 ± 9.4 kgwere divided into two groups (unknown loads: UL; known loads: KL. Both groups performed two sessions weekly consisting of four sets of six repetitions of the bench press throw exercise, using the 30%, 50% and 70% of subjects' individual 1 repetition maximum (1RM. In each set, two repetitions with each load were performed, but the order of the loads was randomised. In the KL group, researchers told the subjects the load to mobilise prior each repetition, while in the UL group, researchers did not provide any information. Maximal dynamic strength (1RM bench press, power output (with 30, 50 and 70% of 1RM and throwing velocity (7 m standing throw and 9 m jumping throw were assessed pre- and post-training intervention.Both UL and KL group improved similarly their 1RM bench press as well as mean and peak power with all loads. There were significant improvements in power developed in all the early time intervals measured (150 ms with the three loads (30, 50, 70% 1RM in the UL group, while KL only improved with 30% 1RM (all the time intervals and with 70% 1RM (at certain time intervals. Only the UL group improved throwing velocity in both standing (4.7% and jumping (5.3% throw (p > 0.05.The use of unknown loads has led to greater gains in power output in the early time intervals as well as to increases in throwing velocity compared with known loads. Therefore unknown loads are of significant practical use to increase both strength and in-field performance in a short period of training.

  19. Strength, power, fiber types, and mRNA expression in trained men and women with different ACTN3 R577X genotypes.

    Science.gov (United States)

    Norman, Barbara; Esbjörnsson, Mona; Rundqvist, Håkan; Osterlund, Ted; von Walden, Ferdinand; Tesch, Per A

    2009-03-01

    Alpha-actinins are structural proteins of the Z-line. Human skeletal muscle expresses two alpha-actinin isoforms, alpha-actinin-2 and alpha-actinin-3, encoded by their respective genes ACTN2 and ACTN3. ACTN2 is expressed in all muscle fiber types, while only type II fibers, and particularly the type IIb fibers, express ACTN3. ACTN3 (R577X) polymorphism results in loss of alpha-actinin-3 and has been suggested to influence skeletal muscle function. The X allele is less common in elite sprint and power athletes than in the general population and has been suggested to be detrimental for performance requiring high power. The present study investigated the association of ACTN3 genotype with muscle power during 30-s Wingate cycling in 120 moderately to well-trained men and women and with knee extensor strength and fatigability in a subset of 21 men performing isokinetic exercise. Muscle biopsies were obtained from the vastus lateralis muscle to determine fiber-type composition and ACTN2 and ACTN3 mRNA levels. Peak and mean power and the torque-velocity relationship and fatigability output showed no difference across ACTN3 genotypes. Thus this study suggests that R577X polymorphism in ACTN3 is not associated with differences in power output, fatigability, or force-velocity characteristics in moderately trained individuals. However, repeated exercise bouts prompted an increase in peak torque in RR but not in XX genotypes, suggesting that ACTN3 genotype may modulate responsiveness to training. Our data further suggest that alpha-actinins do not play a significant role in determining muscle fiber-type composition. Finally, we show that ACTN2 expression is affected by the content of alpha-actinin-3, which implies that alpha-actinin-2 may compensate for the lack of alpha-actinin-3 and hence counteract the phenotypic consequences of the deficiency.

  20. Neurofeedback training aimed to improve focused attention and alertness in children with ADHD: a study of relative power of EEG rhythms using custom-made software application.

    Science.gov (United States)

    Hillard, Brent; El-Baz, Ayman S; Sears, Lonnie; Tasman, Allan; Sokhadze, Estate M

    2013-07-01

    Neurofeedback is a nonpharmacological treatment for attention-deficit hyperactivity disorder (ADHD). We propose that operant conditioning of electroencephalogram (EEG) in neurofeedback training aimed to mitigate inattention and low arousal in ADHD, will be accompanied by changes in EEG bands' relative power. Patients were 18 children diagnosed with ADHD. The neurofeedback protocol ("Focus/Alertness" by Peak Achievement Trainer) has a focused attention and alertness training mode. The neurofeedback protocol provides one for Focus and one for Alertness. This does not allow for collecting information regarding changes in specific EEG bands (delta, theta, alpha, low and high beta, and gamma) power within the 2 to 45 Hz range. Quantitative EEG analysis was completed on each of twelve 25-minute-long sessions using a custom-made MatLab application to determine the relative power of each of the aforementioned EEG bands throughout each session, and from the first session to the last session. Additional statistical analysis determined significant changes in relative power within sessions (from minute 1 to minute 25) and between sessions (from session 1 to session 12). Analysis was of relative power of theta, alpha, low and high beta, theta/alpha, theta/beta, and theta/low beta and theta/high beta ratios. Additional secondary measures of patients' post-neurofeedback outcomes were assessed, using an audiovisual selective attention test (IVA + Plus) and behavioral evaluation scores from the Aberrant Behavior Checklist. Analysis of data computed in the MatLab application, determined that theta/low beta and theta/alpha ratios decreased significantly from session 1 to session 12, and from minute 1 to minute 25 within sessions. The findings regarding EEG changes resulting from brain wave self-regulation training, along with behavioral evaluations, will help elucidate neural mechanisms of neurofeedback aimed to improve focused attention and alertness in ADHD.

  1. Pectus excavatum repair

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/002949.htm Pectus excavatum repair To use the sharing features on this page, please enable JavaScript. Pectus excavatum repair is surgery to correct pectus excavatum . This ...

  2. Effects of a 6-Week Upper Extremity Low-Volume, High Intensity Interval Training on Oxygen Uptake, Peak Power Output and Total Exercise Time.

    Science.gov (United States)

    Pinto, Nicole; Salassi, James W; Donlin, Ayla; Schroeder, Jan; Rozenek, Ralph

    2017-05-30

    The purpose of this study was to compare the effects of upper extremity (UE) high intensity interval training (HIIT) to UE continuous training (CT) when training at a similar intensity. 20 participants (mean age = 23 ± 3 yrs) were randomly assigned to either a HIIT (n = 10) or CT (n = 10) group. Participants completed a graded exercise test utilizing arm cranking prior to and following 6 wks (2 sessions · wk-1) of UE training. During sessions, HIIT performed 10 repetitions of 60 s of work at 92.3 ± 1.0% of the arm HRpeak (%aHRpeak) and 60 s of passive recovery (%aHRpeak = 73.0 ± 4.0%) yielding an average training intensity of 82.6 ± 1.5 %aHRpeak. CT exercised for 20 min. at an average intensity of 81.9 ± 2.2 %aHRpeak. Following training HIIT showed greater improvement in V[Combining Dot Above]O2peak compared to CT (Δ = 4.1 ml · min-¹ · kg-¹, 95%CI: 1.3 - 6.9 ml · min-¹ · kg-¹, p = .007). Total exercise time during the post-test GXT was also improved as a result of HIIT (Δ = 1.4 min, 95%CI: 0.4 - 2.3 min, p = .008). Both groups improved peak power output, but no difference was observed between them (Δ = 3.3 W, 95%CI: -3.3 - 9.9 W, p = .305). For a similar time investment, HIIT appeared to improve cardiopulmonary capacity and exercise time to a greater extent than CT and may be a time-efficient alternative for those who incorporate UE aerobic activity into a training program.

  3. Potentials of manufacture and repair of nickel base turbine components used in aero engines and power plants by laser metal deposition and laser drilling

    Institute of Scientific and Technical Information of China (English)

    I.Kelbassa; K.Walther; L.Trippe; W.Meiners; C.Over

    2007-01-01

    High pressure turbine (HPT) parts like blades and vanes with integrated cooling channels are challenging concerning overhaul and repair.So far damaged parts have to be replaced by the operator.The aim is to design and implement a refurbishment process chain to avoid scrapping of used parts.This process chain implies three different laser applications 1.Direct Laser Forming (DLF),2.Laser Metal Deposition (LMD) and 3.Laser Drilling (LD).The laser processing was extended in the last years towards application near materials like Nickel and Titanium base alloys.Concerning LMD and DLF the achieved results are investigated regarding macro and micro structure,hardness,defects (e.g.cracks,bonding defects,porosity) and contamination with atmospheric elements (e.g.O, N,C and H) are presented for Titanium alloys like Ti-6Al-4V,Ti-6246 and Ti-17 as well as for Nickel base alloys like Inconel 718 and Rene 80.Suitable process parameters are presented with the achieved static (tensile) and dynamic mechanical properties (HCF) and compared to those of heat treated raw materials.One innovative solution (manufacturing case) is to fabricate the small and complex shaped geometrical elements by LMD and/or DLF.By LMD these elements are built-up directly.With DLF the elements are manufactured separately in the DLF machine and connected by a subsequent joining technique with the large parts.With DLF small complex shaped parts like combustor swirlers,HPT blades and vanes with internal cooling channels are manufactured completely.LMD and DLF can be used in combination with subsequent LD.Depending on the application two different drilling techniques by dominant melt ejection-percussion drilling and trepanning-are classified and characterised.The drilling techniques are exemplarily presented for stainless steel and nickel base alloys (diameter 0.2~0.6 mm,aspect ratio<30,inclination up to 60°) using pulsed laser radiation (Nd:YAG,1064 nm,0.5~1 ms).The experimental results of coaxial

  4. Introduction of leadership training based on PM theory at a nuclear power plant. An analysis of leadership, morale and self-efficacy

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, Michio [Kumamoto Univ. (Japan). Dept. of Physics; Yoshiyama, Naohiro; Misumi, Emiko; Matsuda, Ryosuke; Misumi, Jyuji; Hiraki, Tadao; Sakurai, Yukihiro

    1997-09-01

    PM leadership training(PMT) course was introduced into three nuclear power plants for the purpose of accident prevention. PMT is a six-month training course consisting of three parts, i.e., lecture, PM survey, and participants` practice at their workplace. The major aim of PMT is to change participants` leadership behavior into PM-type that is the most desirable for group effectiveness. In this study, we examined the effects of PMT on participants` leadership, subordinates` morale and participants` self-efficacy. Participants were fifty-six supervisors working in operation or maintenance in each nuclear power plant. The supervisors have eight hundred forty five subordinates in all. The major results were as follows: (1) Not only participants` leadership Performance(P) and Maintenance(M) behavior was strengthened, but also their subordinates` morale increased during PMT`s 6-month course. (2) Strengthening both P and M behavior was the most effective in building up subordinates` morale, especially in teamwork, meeting satisfaction, and communication. (3) Participants` self-efficacy was related with the strength of their P behavior and subordinates` group morale. These results show that PMT course is effective in accident prevention in nuclear power plants. Finally, we discuss some future problems of the development of PMT in nuclear power plants. (author)

  5. Training Methods and Ways of Internal Trainer in Power Enterprise%论电力企业内训师培训方法与途径

    Institute of Scientific and Technical Information of China (English)

    韦美宁

    2012-01-01

      Power refers to the commander of an advance unit or vanguard of national economy. Internal trainer is the key to improve the whole quality of power enterprise’s staff. As an internal trainer in a power enterprise, he or she must explore training methods and ways that adapt to all staff from every level in the new situation, strive to do a good job in training work and provide strong support and guarantee for the development of power enterprises.%  电力是国民经济的先行官,电力企业员工整体素质的提升,内训师是关键。作为电力企业内训师,应不断地探索新形势下适应各个层面职工的培训方法与途径,努力把培训工作做好、做扎实,为推进电力企业的发展提供强有力的支撑与保障。

  6. Explore the Power of Education and Training Issues and Solutions%探讨电力教育培训工作问题及解决措施

    Institute of Scientific and Technical Information of China (English)

    张宏毅

    2014-01-01

    Power companies are technology-intensive enterprises, healthy and stable development of enterprises need to have sufficient human resources to sustain it. Human resources are the core competitiveness of the power companies, and conduct education and training is an effective way to increase the power of enterprise human capital, is an effective means to enhance the core competitiveness of electricity. Analysis to explore the power of education and training in the problems put forward the corresponding solutions.%电力企业属于技术密集型企业,企业的健康、稳定发展需要有足够的人力资源作为支撑。人力资源是电力企业的核心竞争力,而开展教育培训工作则是提高电力企业人力资本的有效途径,是增强电力企业核心竞争力的有效手段。分析、探讨了电力教育培训工作中存在的问题,提出了相应的解决措施。

  7. When "Other" Initiate Repair.

    Science.gov (United States)

    Schegloff, Emanuel A.

    2000-01-01

    Elaborates on the locus of other-initiated repair, and reports on a number of environments in which others initiate repair turns later than the one directly following the trouble-source turn. Describes several ways that other initiation of repair, which occurs in next-turn position, may be delayed within that position. (Author/VWL)

  8. Research and development studies for MHD/coal power flow train components. Technical progress report, 1 September 1979-31 August 1980

    Energy Technology Data Exchange (ETDEWEB)

    Bloom, M. H.

    1980-01-01

    The aim of this program is to contribute to certain facets of the development of the MHD/coal power system, and particularly the CDIF of DOE with regard to its flow train. Consideration is given specifically to the electrical power take-off, the diagnostic and instrumentation systems, the combustor and MHD channel technology, and electrode alternatives. Within the constraints of the program, high priorities were assigned to the problems of power take-off and the related characteristics of the MHD channel, and to the establishment of a non-intrusive, laser-based diagnostic system. The next priority was given to the combustor modeling and to a significantly improved analysis of particle combustion. Separate abstracts were prepared for nine of the ten papers included. One paper was previously included in the data base. (WHK)

  9. COMPARISON OF CONCENTRIC AND ECCENTRIC HAMSTRING STRENGTH TRAINING IN IMPROVING MUSCLE STRENGTH AND POWER AMONG FUTSAL PLAYERS A RANDOMIZED CONTROLLED TRIAL

    Directory of Open Access Journals (Sweden)

    Arunkumar Nedunchezhiyan

    2016-12-01

    Full Text Available Background: Hamstring injury is a common problem in many sports, especially those involving acceleration and maximal sprints. Hamstring strains are both common and painful. During sprinting the hip flexor and knee extensor torques are frequently produced and is opposed by the hamstring muscles, hence there are numerous studies done on the muscle strength training to prevent the hamstring strain injury as it is statistically stated as the highest rate involved injury in the contact sport. This study has been focused to evaluate the effectiveness of concentric and eccentric exercises in improving hamstring muscle strength and power among futsal players. Method: Thirty recreational futsal players were recruited for the study and were randomly divided into two groups. Each group received either hamstring curl exercise (concentric or Nordic hamstring exercise (eccentric twice a week for 4 weeks. The manual muscle test (MMT and 40-yard dash test was used to evaluate the muscle strength and power respectively by comparing the pretest and posttest values for both groups. Results: Wilcoxon signed rank test showed that there is no statistically significant difference between pre and post test values of MMT (Concentric (right side, z=.317; left side, z=.157, Eccentric (right side, z=.157; left side, z=.317 in both groups. Based on paired 't' test there is a significant difference between the pre and post test on improving muscle power [Concentric group, P=.020; Eccentric Group, P=.000]. Mann–Whitney U test and unpaired 't' test showed that there is no significant difference between both groups of MMT (z=.775 and 40-yard dash test (P=.707 respectively. Conclusion: The concentric strength training and eccentric strength training have a similar effect in improving hamstring muscle power in futsal players.

  10. 浅析国电大武口热电有限公司的员工培训%On the Staff Training of State Power Dawukou Thermal Power Co., Ltd

    Institute of Scientific and Technical Information of China (English)

    陈凤

    2015-01-01

    Training is not only the main way to improve the quality of the staff and develop staff ability, but also become an effective way to attract, motivate and retain talent. This paper analyzes the problems existing in the staff training of State Power Dawukou Thermal Power Co., Ltd., and then puts forward the reform countermeasures, and stresses the significance of the training work for enterprise development.%培训不仅是提高职工素质发展职工能力的主要通道,也成为企业吸引、激励、留住人才的有效方法。本文分析了国电大武口热电有限公司培训中存在的问题,然后对如何让加强国电大武口热电有限公司职工培训工作提出了整改措施,多方面强调了培训工作对于企业发展的重要意义。

  11. Percutaneous mitral valve repair.

    Science.gov (United States)

    Gillinov, A Marc; Liddicoat, John R

    2006-01-01

    Surgical mitral valve repair is the procedure of choice to treat mitral regurgitation of all etiologies. Whereas annuloplasty is the cornerstone of mitral valve repair, a variety of other surgical techniques are utilized to correct dysfunction of the leaflets and subvalvular apparatus; in most cases, surgical repair entails application of multiple repair techniques in each patient. Preclinical studies and early human experience have demonstrated that some of these surgical repair techniques can be performed using percutaneous approaches. Specifically, there has been great progress in the development of novel technology to facilitate percutaneous annuloplasty and percutaneous edge-to-edge repair. The objectives of this report were to (1) discuss the surgical foundations for these percutaneous approaches; (2) review device design and experimental and clinical results of percutaneous valve repair; and (3) address future directions, including the key challenges of patient selection and clinical trial design.

  12. Operation Training Quality Analysis and Improvement of the Marine Power Equipment%船舶动力设备操作训练质量分析与改进

    Institute of Scientific and Technical Information of China (English)

    殷胜; 肖海瑞

    2014-01-01

    The operation training quality and situation of motive power equipment was analyzed .According to the operation training traits and flaws , some practiced training ideas were set forth from respects of system improvement , personnel training , in-novations of training model , which can be referenced for improve the operation training quality of motive power equipment .%针对当前动力设备操作训练的质量和形势,结合动力设备操作训练特点和存在的不足,从机制健全、人才培养、创新训练模式探讨等方面提出实践性训练改进思路,为有效提高动力设备操作训练提供参考。

  13. The effects of a customized over-the-counter mouth guard on neuromuscular force and power production in trained men and women.

    Science.gov (United States)

    Dunn-Lewis, Courtenay; Luk, Hui-Ying; Comstock, Brett A; Szivak, Tunde K; Hooper, David R; Kupchak, Brian R; Watts, Ashley M; Putney, Brendan J; Hydren, Jay R; Volek, Jeff S; Denegar, Craig R; Kraemer, William J

    2012-04-01

    Although mouth guards were originally designed for injury prevention, even elite athletes are now using performance mouth guards to improve athletic success. Both expensive custom models and over-the-counter models are available, but the efficacy is not well known. Some athletes remain wary of the perceived potential for detriments using a mouth guard to their performance. Thus, the purpose of this study was to examine various physical performance tests when using a mouth guard including a customized over-the-counter mouth guard. Twenty-six trained men (25 ± 4 years; 1.78 ± 0.07 m; 83.3 ± 11.4 kg) and 24 trained women (23 ± 3 years; 1.65 ± 0.08 m; 62.6 ± 7.8 kg) volunteered for the investigation. The subjects completed a familiarization period and then balanced and randomized treatment conditions that included: (a) a customized Power Balance performance mouth guard (PB MG); (b) a regular over the counter boil-and-bite mouth guard (Reg MG); and (c) a no mouth guard (No MG) treatment condition. At each visit, the subjects completed a testing protocol that was sequenced in the following order: sit-and-reach flexibility, medial-lateral balance, visual reaction time, vertical jump, 10-m sprint, bench throw, and plyo press power quotient (3PQ). Heart rate and rating of perceived exertion (RPE) were recorded around the 3PQ. Significance was set at p ≤ 0.05. Expected significant sex differences existed for all power, strength, and speed variables. Bench throw power (watts) and force (newtons) were significantly higher under PB MG than either Reg MG or No MG or in both men and women. The 3PQ power and force production were higher than that for the other 2 treatments for the PB MG for men only. There were no significant differences for treatment conditions in the heart rate or RPE after the 3PQ test. Men were better able to maintain significantly higher 3PQ power production under PB MG treatment condition compared with the other 2 treatment conditions. Rate of power

  14. Development and application of robots for checking and repairing civil engineering facilities in hydraulic power plants. Suiryoku hatsudensho doboku setsubi wo taisho to shita kakushu tenken hoshu robot no kaihatsu to tekiyo

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, T.; Hibino, Y. (The Tokyo Electric Power Co. Inc., Tokyo (Japan))

    1993-07-25

    Development efforts are being made on robots to improve efficiency in the checking and repairing works that require a great amount of labor at hydraulic power plants. This paper introduces examples of the development and application of these robots. An underwater remotely controlled robot developed based on unmanned submarine boats mounts TV cameras, dives to a depth of 300 meters, and checks underwater structures under control from above the ground. A self-driven waterway investigating system mounting an underground radar equipment investigates tunnel covers and rear cavities, and can acquire continuous data for the cover thickness and cavities without a need of boring. The following robots have obtained satisfactory results in efficiency improvement and accuracy: an unmanned robot for checking inside of a waterway tunnel with small cross section difficult for a man to enter (using a video camera); a video photographing robot to photograph large underground cavities such as surge tanks; and a self-driven robot to visually inspect and photograph steel pipes and measure their thickness. 8 figs., 8 tabs.

  15. Voluntary muscle activation improves with power training and is associated with changes in gait speed in mobility-limited older adults - A randomized controlled trial.

    Science.gov (United States)

    Hvid, Lars G; Strotmeyer, Elsa S; Skjødt, Mathias; Magnussen, Line V; Andersen, Marianne; Caserotti, Paolo

    2016-07-01

    Incomplete voluntary muscle activation may contribute to impaired muscle mechanical function and physical function in older adults. Exercise interventions have been shown to increase voluntary muscle activation, although the evidence is sparse for mobility-limited older adults, particularly in association with physical function. This study examined the effects of 12weeks of power training on outcomes of voluntary muscle activation and gait speed in mobility-limited older adults from the Healthy Ageing Network of Competence (HANC) study. We included 37 older men and women with a usual gait speed of analysis: n=16 in the training group (TG: 12weeks of progressive high-load power training, 2 sessions per week; age: 82.3±1.3years, 56% women) and n=21 in the control group (CG: no interventions; age: 81.6±1.1years, 67% women). Knee extensor muscle thickness (ultrasonography), strength (isokinetic dynamometry), voluntary activation (interpolated twitch technique), and gait speed (2-min maximal walking test) were assessed at baseline and post-intervention. At baseline, TG and CG were comparable for all measures. Post-intervention, significant between-group changes (TG vs. CG; pgait speed (+0.12m/s), whereas the between-group change in muscle thickness was non-significant (+0.08cm). Improvements in voluntary muscle activation were associated with improvements in gait speed in TG (r=0.67, ppower training, and is associated with improved maximal gait speed. Incomplete voluntary muscle activation should be considered one of the key mechanisms influencing muscle mechanical function and gait speed in older adults.

  16. Investigating the Effects of Typical Rowing Strength Training Practices on Strength and Power Development and 2,000 m Rowing Performance

    Directory of Open Access Journals (Sweden)

    Ian Gee Thomas

    2016-04-01

    Full Text Available This study aimed to determine the effects of a short-term, strength training intervention, typically undertaken by club-standard rowers, on 2,000 m rowing performance and strength and power development. Twenty-eight male rowers were randomly assigned to intervention or control groups. All participants performed baseline testing involving assessments of muscle soreness, creatine kinase activity (CK, maximal voluntary contraction (leg-extensors (MVC, static-squat jumps (SSJ, counter-movement jumps (CMJ, maximal rowing power strokes (PS and a 2,000 m rowing ergometer time-trial (2,000 m with accompanying respiratory-exchange and electromyography (EMG analysis. Intervention group participants subsequently performed three identical strength training (ST sessions, in the space of five days, repeating all assessments 24 h following the final ST. The control group completed the same testing procedure but with no ST. Following ST, the intervention group experienced significant elevations in soreness and CK activity, and decrements in MVC, SSJ, CMJ and PS (p < 0.01. However, 2,000 m rowing performance, pacing strategy and gas exchange were unchanged across trials in either condition. Following ST, significant increases occurred for EMG (p < 0.05, and there were non-significant trends for decreased blood lactate and anaerobic energy liberation (p = 0.063 – 0.086. In summary, club-standard rowers, following an intensive period of strength training, maintained their 2,000 m rowing performance despite suffering symptoms of muscle damage and disruption to muscle function. This disruption likely reflected the presence of acute residual fatigue, potentially in type II muscle fibres as strength and power development were affected.

  17. 供电企业全员培训机制建设研究%Research on the construction of full training mechanism for power supply enterprises

    Institute of Scientific and Technical Information of China (English)

    赵晓龙

    2016-01-01

    In the process of modern enterprise management,human resources management is a very important part of the.At present,the power supply enterprise human resources management is in traditional mode to the modern mode of strategic improvement process,has established a preliminary mechanism of human resource management,but in personnel training and development strategy in the process still exist many problems,making human resources training effect is not ideal. Along with our country to the power supply enterprise's gradual attention,the power supply enterprise needs to carry on the reform unceasingly,so as to consummate the enterprise human resources training mechanism,promotes the staff's comprehensive quality, promotes the enterprise's progress and the development.%在现代的企业管理过程中,人力资源管理是十分重要的组成部分。目前,供电企业人力资源管理正处在传统模式到现代模式的战略改进过程中,已经建立了初步的人力资源管理机制,但是在进行人员培训和战略开发过程中还存在着许多问题,使得人力资源培训的效果并不理想。随着我国对供电企业的逐渐重视,供电企业需要不断的进行改革,从而完善企业人力资源的培训机制,提升员工的综合素质,促进企业的进步和发展。

  18. Using Experiential Activities to Prepare Counselors-in-Training to Understand the Power of Cravings when Addressing Clients with Addiction

    Science.gov (United States)

    Harrawood, Laura K.; McClure, Cristen C.; Nelson, Jennifer

    2011-01-01

    Providing skilled treatment options for clients experiencing addiction is imperative to positive client treatment outcomes. As a prerequisite to providing efficacious addiction treatment, counselors-in-training are charged with the responsibility of understanding the affect of cravings on addiction relapse. This article presents 3 experiential,…

  19. Using Experiential Activities to Prepare Counselors-in-Training to Understand the Power of Cravings when Addressing Clients with Addiction

    Science.gov (United States)

    Harrawood, Laura K.; McClure, Cristen C.; Nelson, Jennifer

    2011-01-01

    Providing skilled treatment options for clients experiencing addiction is imperative to positive client treatment outcomes. As a prerequisite to providing efficacious addiction treatment, counselors-in-training are charged with the responsibility of understanding the affect of cravings on addiction relapse. This article presents 3 experiential,…

  20. Optimality in DNA repair.

    Science.gov (United States)

    Richard, Morgiane; Fryett, Matthew; Miller, Samantha; Booth, Ian; Grebogi, Celso; Moura, Alessandro

    2012-01-07

    DNA within cells is subject to damage from various sources. Organisms have evolved a number of mechanisms to repair DNA damage. The activity of repair enzymes carries its own risk, however, because the repair of two nearby lesions may lead to the breakup of DNA and result in cell death. We propose a mathematical theory of the damage and repair process in the important scenario where lesions are caused in bursts. We use this model to show that there is an optimum level of repair enzymes within cells which optimises the cell's response to damage. This optimal level is explained as the best trade-off between fast repair and a low probability of causing double-stranded breaks. We derive our results analytically and test them using stochastic simulations, and compare our predictions with current biological knowledge.

  1. The Prevalence of Musculoskeletal Disorder and the Association with Risk Factors among Auto Repair Mechanics in Klang Valley, Malaysia

    Directory of Open Access Journals (Sweden)

    Ahmad Faisal AHMAD NASARUDDIN

    2015-10-01

    Full Text Available Background: The primary objective of this study was to determine the association between risk factors and the prevalence of musculoskeletal disorder (MSD among auto repair mechanics in Klang Valley, Malaysia.Methods: Overall, 191 mechanics from eight auto repair centers in Klang Valley, Malaysia were stratified sampling as participants of this study. A modified version of the general Standardized Nordic Questionnaire was used for analyses of perceived MSD in nine different parts of the body. Rapid Upper Limb Assessment (RULA, vibration measurement on hand power tool, questionnaire on job content, force exertion was used in this study. Direct logistic regression was performed to assess the impact of risk factors on the MSD prevalence. The probability limits for evaluating statistical significance was P < 0.05.Results: 87.4% of auto repair mechanics suffered from MSD. Logistic regression analysis revealed that factors were associated with symptoms on MSD: RULA (7.933, 95% CI 4.637-13.573 and orceful exertion (3.173, 95% CI 1.194 – 8.432. The magnitude of vibration of power tool exceeds action level 2.5m/s2 with (Mean=3.99+S.E. 0.071 and showed significant association with MSD in this study (P<0.05.Conclusion: Auto repair mechanics at auto repair centers in Klang Valley are likely to be exposed to a variety of ergonomic hazards and risk factors. Therefore, ergonomics awareness between employer and employee with training and information sharing shall be increase to reduce the prevalence of MSDs. Keywords: Musculoskeletal disorder (MSD, Auto repair mechanics, Hand arm vibration

  2. Effect of 8 weeks of free-weight and machine-based strength training on strength and power performance

    Directory of Open Access Journals (Sweden)

    Wirth Klaus

    2016-12-01

    Full Text Available The aim of this study was to evaluate the effectiveness of free-weight and machine-based exercises to increase different strength and speed-strength variables. One hundred twenty male participants (age: 23.8 ± 2.5 years; body height: 181.0 ± 6.8 cm; body mass: 80.2 ± 8.9 kg joined the study. The 2 experimental groups completed an 8 week periodized strength training program that included 2 training sessions per week. The exercises that were used in the strength training programs were the parallel barbell squat and the leg press. Before and after the training period, the 1-repetition-maximum in the barbell squat and the leg press, the squat jump, the countermovement jump and unilateral isometric force (maximal isometric force and the rate of force development were evaluated. To compare each group pre vs. post-intervention, analysis of variance with repeated measures and Scheffé post-hoc tests were used. The leg press group increased their 1-repetition-maximum significantly (p < 0.001, while in the squat group such variables as 1-repetition-maximum, the squat jump and the countermovement jump increased significantly (p < 0.001. The maximal isometric force showed no statistically significant result for the repeated measures factor, while the rate of force development of the squat group even showed a statistically significant decrease. Differences between the 2 experimental groups were detected for the squat jump and the countermovement jump. In comparison with the leg press, the squat might be a better strength training exercise for the development of jump performance.

  3. The effects of six weeks of supplementation with multi-ingredient performance supplements and resistance training on anabolic hormones, body composition, strength, and power in resistance-trained men

    Directory of Open Access Journals (Sweden)

    Ormsbee Michael J

    2012-11-01

    Full Text Available Abstract Background Resistance training (RT enhances muscle protein synthesis and hypertrophy while increasing strength and power. Some multi-ingredient performance supplements (MIPS have been shown to augment the physiological improvements associated with RT. The purpose of this study was to investigate the impact of specific pre- and post-workout MIPS on anabolic hormones, body composition, muscle strength, and power in resistance-trained men participating in a periodized RT program. Methods Twenty-four ( mean ± SE; 24.0 ± 0.9 years; 180.5 ± 5.8 cm; 83.7 ± 0.5 kg resistance-trained men completed 6 wks of periodized RT (3x/wk. Participants were assigned to one of two groups based upon maximal voluntary contraction of the quadriceps (Biodex to lean mass (LM ratio. Group 1 (n = 13; MIPS consumed one serving of NO-Shotgun® (whey protein, casein protein, branched-chain amino acids, creatine, beta alanine, and caffeine before each workout and one serving of NO-Synthesize® (whey protein, casein protein, branched-chain amino acids, creatine, and beta alanine; Vital Pharmaceuticals, Inc., Davie, FL immediately after each workout and on non-RT days. Group 2 (n = 11; Placebo; PLA consumed a flavor-matched isocaloric maltodextrin placebo. Serum insulin-like growth factor 1, human growth hormone, testosterone, body composition (DXA, circumferences, 1-repetition maximal strength (1RM of the upper (chest press and lower body (leg press, and anaerobic power (Wingate test were assessed before and after the intervention. Statistical analysis included a 2 × 2 (group x time ANOVA with repeated measures. Tukey LSD post hoc tests were used to examine pairwise differences. Significance was set at p  Results There was a main time effect (p = 0.035 for testosterone to increase, but no differences between groups were observed. There were no differences in the other blood hormones. Group x time interactions were observed for LM

  4. 14 CFR 145.163 - Training requirements.

    Science.gov (United States)

    2010-01-01

    ... certificated repair station must have an employee training program approved by the FAA that consists of initial... certificate was issued. (b) The training program must ensure each employee assigned to perform maintenance... employee training required under paragraph (a) of this section. These training records must be retained...

  5. On the Motivation Mechanism of Training Higher VocationalStudents’Soft Power%略论高职学生软实力培养的动力机制

    Institute of Scientific and Technical Information of China (English)

    薛宝志

    2016-01-01

    培养高职生软实力是当前高职教育的重要使命。高职院校不仅要构建高职生软实力培养的内部动力系统,充分发挥目标引导力、制度激励力、实践推动力和环境渗透力,而且要利用政府、企业、社会和家庭的力量,完善高职生软实力培养的外部动力系统,为高职生软实力培育提供政策支持、企业助力、社会影响和家庭教育。%Training the soft power of higher vocational students is the important mission of higher vocational e-ducation . Higher vocational colleges should not only build the inner power system of training the soft power of higher vocational students,giving full play to the target guidance,system motivation,practical impetus and environment penetration,but also make good use of the power of the government,enterprises,society and family to improve the external power system of training the soft power of higher vocational students,which can provide policy support, corporate power,social influence and family education for training the soft power of higher vocational students.

  6. ScottishPower learning's school-to-work education and training programs[Empowering socially excluded youth and building future managers' leadership, communication and social skills

    Energy Technology Data Exchange (ETDEWEB)

    Kitagawa, K.; Watt, D.; Yachnin, R.

    2001-08-01

    Serving approximately 7 million homes and businesses across the United Kingdom and the northwest United States, ScottishPower and its subsidiaries are one of the 12 largest electricity groups in the world. Following deregulation in the electricity industry in the United Kingdom in 1990, ScottishPower found it had to change quickly to capture emerging opportunities. It recognized the need to support employee development and set up an Open Learning Centre to be used by staff for their own personal development. Investment was made in occupational health and wellness services. The following three-step training process was established for ScottishPower: (1) conduct employability assessments; (2) design and deliver a learning activity so that the individual will be successful in the workplace; and (3) engage learners. ScottishPower has implemented several training programs to empower employees, their families and their communities: education transition programs for 15-18 year olds; pre-vocational training for 16-25 year olds; and, vocational training for 16-25 year olds. The keys to success include people, processes, infrastructure, resources committed, challenges, and innovation. In cooperation with trade unions, government bodies, economic development agencies and education and training agencies, ScottishPower has developed a wide spectrum of training and development programs aimed at unemployed young people in socially deprived areas of the United Kingdom.

  7. One session of high-intensity interval training (HIIT) every 5 days, improves muscle power but not static balance in lifelong sedentary ageing men: A randomized controlled trial.

    Science.gov (United States)

    Sculthorpe, Nicholas F; Herbert, Peter; Grace, Fergal

    2017-02-01

    Declining muscle power during advancing age predicts falls and loss of independence. High-intensity interval training (HIIT) may improve muscle power, but remains largely unstudied in ageing participants. This randomized controlled trial (RCT) investigated the efficacy of a low-frequency HIIT (LfHIIT) intervention on peak muscle power (peak power output [PPO]), body composition, and balance in lifelong sedentary but otherwise healthy males. Thirty-three lifelong sedentary ageing men were randomly assigned to either intervention (INT; n = 22, age 62.3 ± 4.1 years) or control (n = 11, age 61.6 ± 5.0 years) who were both assessed at 3 distinct measurement points (phase A), after 6 weeks of conditioning exercise (phase B), and after 6 weeks of HIIT once every 5 days in INT (phase C), where control remained inactive throughout the study. Static balance remained unaffected, and both absolute and relative PPO were not different between groups at phases A or B, but increased significantly in INT after LfHIIT (P sedentary ageing men.

  8. Design of Suspension Power Supply for Mid-Low Speed Maglev Train%中低速磁浮列车悬浮电源的设计

    Institute of Scientific and Technical Information of China (English)

    魏培华; 黄芳军; 孙立辉; 唐海燕; 刘长清

    2012-01-01

    A DC/DC converter is used in suspension power supply for mid-low speed maglev train, which can provide DC 330 V power for suspension controller and charge DC 330 V battery. It's one of the key equipments of mid-low speed maglev train for normal operating. Its main circuit topology, basic control method and current sharing technology are presented, and the structural design and engineering applications are also introduced.%中低速磁浮列车的悬浮电源采用DC/DC变换器,主要为悬浮控制器提供DC330V电源和为DC330V蓄电池充电,是中低速磁浮列车正常运行的关键部件之一。文章主要介绍了中低速磁浮列车悬浮电源主电路拓扑结构、基本控制方法、均流控制等关键技术,并介绍了其结构设计及应用。

  9. Human Resource Training in Power Plants%浅析电力企业人力资源培训的现状与对策

    Institute of Scientific and Technical Information of China (English)

    周焱

    2012-01-01

    Competition of companies refers to talents competition. Human resource training means an important way of raising staff comprehensive quality as well as basic abilities. The paper analyzes current situation for training in power plants and proposes that a new way of improving training system.%企业的竞争归根结底是人才的竞争。电力企业人力资源培训是提高员工综合素质和基本技能的重要手段。本文在深入分析电力企业人力资源培训的重要性和特点的基础上,总结归纳了目前电力企业培训现状,有针对性地提出了树立全新的培训理念,建立完善的培训规划,打造一流的培训团队,科学优化培训的内容,强化培训效果的评估,建立完善的生涯规划等对策建议。

  10. High-intensity interval training and β-hydroxy-β-methylbutyric free acid improves aerobic power and metabolic thresholds

    OpenAIRE

    Robinson, Edward H.; Stout, Jeffrey R; Miramonti, Amelia A; Fukuda, David H; Wang, Ran; Townsend, Jeremy R.; Mangine, Gerald T; Fragala, Maren S.; Hoffman, Jay R.

    2014-01-01

    Background Previous research combining Calcium β-hydroxy-β-methylbutyrate (CaHMB) and running high-intensity interval training (HIIT) have shown positive effects on aerobic performance measures. The purpose of this study was to examine the effect of β-hydroxy-β-methylbutyric free acid (HMBFA) and cycle ergometry HIIT on maximal oxygen consumption (VO2peak), ventilatory threshold (VT), respiratory compensation point (RCP) and time to exhaustion (Tmax) in college-aged men and women. Methods Thi...

  11. Repairs of composite structures

    Science.gov (United States)

    Roh, Hee Seok

    Repair on damaged composite panels was conducted. To better understand adhesively bonded repair, the study investigates the effect of design parameters on the joint strength. The design parameters include bondline length, thickness of adherend and type of adhesive. Adhesives considered in this study were tested to measure their tensile material properties. Three types of adhesively bonded joints, single strap, double strap, and single lap joint were considered under changing bondline lengths, thickness of adherend and type of adhesive. Based on lessons learned from bonded joints, a one-sided patch repair method for composite structures was conducted. The composite patch was bonded to the damaged panel by either film adhesive FM-73M or paste adhesive EA-9394 and the residual strengths of the repaired specimens were compared under varying patch sizes. A new repair method using attachments has been suggested to enhance the residual strength. Results obtained through experiments were analyzed using finite element analysis to provide a better repair design and explain the experimental results. It was observed that the residual strength of the repaired specimen was affected by patch length. Method for rapid repairs of damaged composite structures was investigated. The damage was represented by a circular hole in a composite laminated plate. Pre-cured composite patches were bonded with a quick-curing commercial adhesive near (rather than over) the hole. Tensile tests were conducted on specimens repaired with various patch geometries. The test results showed that, among the methods investigated, the best repair method restored over 90% of the original strength of an undamaged panel. The interfacial stresses in the adhesive zone for different patches were calculated in order to understand the efficiencies of the designs of these patch repairs. It was found that the composite patch that yielded the best strength had the lowest interfacial peel stress between the patch and

  12. Integrated analysis of DFIG drive-train and power electronics dynamics during electrical AC faults and wind disturbances

    DEFF Research Database (Denmark)

    Barahona Garzón, Braulio; Sørensen, Poul Ejnar; Anaya-Lara, Olimpo

    2013-01-01

    The dynamics of a 2 MW DFIG wind turbine are studied during electrical AC faults, and wind disturbances. A simulation platform that couples HAWC2, and Matlab/Simulink was used. High frequencies of the gear box, and power electronics are neglected. It was shown that the dynamics of the dc-link are......The dynamics of a 2 MW DFIG wind turbine are studied during electrical AC faults, and wind disturbances. A simulation platform that couples HAWC2, and Matlab/Simulink was used. High frequencies of the gear box, and power electronics are neglected. It was shown that the dynamics of the dc...

  13. 30 CFR 75.705-2 - Repairs to energized surface high-voltage lines.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Repairs to energized surface high-voltage lines... Repairs to energized surface high-voltage lines. An energized high-voltage surface line may be repaired... on power circuits with a phase-to-phase nominal voltage no greater than 15,000 volts; (3)...

  14. 30 CFR 77.704-2 - Repairs to energized high-voltage lines.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Repairs to energized high-voltage lines. 77.704... UNDERGROUND COAL MINES Grounding § 77.704-2 Repairs to energized high-voltage lines. An energized high-voltage... repairs will be performed on power circuits with a phase-to-phase nominal voltage no greater than...

  15. Repair and regeneration in endodontics.

    Science.gov (United States)

    Lin, L M; Rosenberg, P A

    2011-10-01

    The ideal objective of treatment of established diseases, including irreversible pulpitis and apical periodontitis, is to achieve wound healing. Wound healing can result in repair or regeneration. The ultimate goal of wound healing is to restore the original architecture and biological function of the injured tissue or organ. Although humans are equipped with powerful innate and adaptive immune defence mechanisms, many intrinsic and extrinsic factors can affect wound healing. Complete regeneration following injury in humans can occur only in the pre-natal foetus within 24 weeks of gestation. Post-natal wounds including irreversible pulpitis or apical periodontitis always heal by repair or by a combination of repair and regeneration. Somatic cells, such as fibroblasts, macrophages, cementoblasts and osteoblasts, in the pulp and periapical tissues have limited potential for regeneration following injury and lack of telomerase. Wound healing of irreversible pulpitis and apical periodontitis requires recruitment and differentiation of progenitor/stem cells into tissue-committed somatic cells. Stem cell differentiation is regulated by intrinsic factors and extrinsic micro-environmental cues. Functionality of stem cells appears to show an age-related decline because of the change in intrinsic properties and diminished signals within the extrinsic local and systemic environment that modulate the function of stem cells or their progeny. Infection induces an immuno-inflammatory response and tissue destruction, which hinders the potential of tissue regeneration. Therefore, prevention, early detection and treatment of inflammation/infection of pulpal and periapical disease can enhance regeneration and minimize the repair of pulpal and periapical tissues after endodontic therapy. © 2011 International Endodontic Journal.

  16. Workshop on DNA repair.

    NARCIS (Netherlands)

    A.R. Lehmann (Alan); J.H.J. Hoeijmakers (Jan); A.A. van Zeeland (Albert); C.M.P. Backendorf (Claude); B.A. Bridges; A. Collins; R.P.D. Fuchs; G.P. Margison; R. Montesano; E. Moustacchi; A.T. Natarajan; M. Radman; A. Sarasin; E. Seeberg; C.A. Smith; M. Stefanini (Miria); L.H. Thompson; G.P. van der Schans; C.A. Weber (Christine); M.Z. Zdzienika

    1992-01-01

    textabstractA workshop on DNA repair with emphasis on eukaryotic systems was held, under the auspices of the EC Concerted Action on DNA Repair and Cancer, at Noordwijkerhout (The Netherlands) 14-19 April 1991. The local organization of the meeting was done under the auspices of the Medical Genetic C

  17. Laparoscopic lumbar hernia repair.

    Science.gov (United States)

    Madan, Atul K; Ternovits, Craig A; Speck, Karen E; Pritchard, F Elizabeth; Tichansky, David S

    2006-04-01

    Lumbar hernias are rare clinical entities that often pose a challenge for repair. Because of the surrounding anatomy, adequate surgical herniorraphy is often difficult. Minimally invasive surgery has become an option for these hernias. Herein, we describe two patients with lumbar hernias (one with a recurrent traumatic hernia and one with an incisional hernia). Both of these hernias were successfully repaired laparoscopically.

  18. Demonstration system for renewable power supply in the Bernburg/Roschwitz vocational training schools. Final report; Demonstrationsanlage von regenerativen Energien fuer die Berufsbildenden Schulen Bernburg/Roschwitz. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Fuerich; Strauss

    2002-03-01

    The vocational schools of the district of Bernburg, which have about 1000 students, have become a training center for renewable energy and environmental protection. The project 'SOLARIUS' is used especially for training heating systems experts, technical facilities experts and electrical engineering experts. Other schools are interested in using the systems for demonstration and teaching purposes, too. The system comprises a 12 m{sup 2} solar collector system for space and water heating; an 1.4 kWp PV system for electric power generation and power supply to the public grid; a 0.6 kW wind power system to support the PV system on cloudy but windy days; 5 kW air-to-water heat pumps for demonstration and also for auxiliary heating. [German] Die Berufsbildenden Schulen des Landkreises Bernburg, seit 1999 verantwortlich fuer die zentrale Ausbildung von zirka 1000 Lehrlingen der verschiedensten Berufsgruppen, haben sich zu einem Berufsschulzentrum fuer regenerative Energie und Umweltschutz entwickelt. Fachlehrer riefen das Projekt 'SOLARIUS' ins Leben, das vor allem in der Ausbildung von Heizungs- und Sanitaermonteuren sowie Elektrotechnikern genutzt wird. Verschiedene Gymnasien und Sekundarschulen haben ihr Interesse bekundet, die Demonstrationsanlage als Anschauungsobjekt zu nutzen. Folgende Anlagenkomponenten sollen bei der Demoanlage zum Einsatz gelangen: - 12 m{sup 2} Solarkollektoren zur Warmwasserbereitung und zur Heizungsunterstuetzung. - 1,4 kWp Photovoltaikanlage zur Energieerzeugung fuer elektrische Verbraucher in der Demoanlage bzw. zur Einspeisung in das oeffentliche Netz. - 0,6 kW Windkraftanlage zusaetzliche Unterstuetzung der Photovoltaikanlage bei sonnenschwachen, aber windstarken Tagen. - 5 kW Luft-/Wasser-Waermepumpen fuer demonstrativen Zweck und zur Heizungsunterstuetzung. Zur Zeit werden Heizung und Warmwasserbereitung der Berufsschule aus dem Fernwaermenetz der Stadtwerke Bernburg ueber eine Hausanschlussstation gespeist. Durch

  19. DNA repair protocols

    DEFF Research Database (Denmark)

    Bjergbæk, Lotte

    In its 3rd edition, this Methods in Molecular Biology(TM) book covers the eukaryotic response to genomic insult including advanced protocols and standard techniques in the field of DNA repair. Offers expert guidance for DNA repair, recombination, and replication. Current knowledge of the mechanisms...... that regulate DNA repair has grown significantly over the past years with technology advances such as RNA interference, advanced proteomics and microscopy as well as high throughput screens. The third edition of DNA Repair Protocols covers various aspects of the eukaryotic response to genomic insult including...... recent advanced protocols as well as standard techniques used in the field of DNA repair. Both mammalian and non-mammalian model organisms are covered in the book, and many of the techniques can be applied with only minor modifications to other systems than the one described. Written in the highly...

  20. Lessons Learned in Robotic Support of the Maintenance and Repair of the International Space Station

    Science.gov (United States)

    Dyer, J.; Lucier, L.

    With the completion of International Space Station (ISS) assembly, planning and daily activities are transitioning from construction to maintenance and repair. Previously, the ISS programme has relied heavily on the Space Shuttle programme to aid these tasks due to its ability to deliver equipment on relatively short notice together with crewmembers recently trained on execution of specific tasks. In 2007, a study was performed to identify and develop preliminary removal and replacement (R&R) timelines for those Orbital Replaceable Units (ORUs) that would cause a loss of redundancy to ISS power or life support capability [1]. This study identified 14 such ORUs and the team was challenged to demonstrate that the various Extra Vehicular Activity (EVA) tasks required to repair or replace these units could be performed without the support of the Space Station Remote Manipulator System (SSRMS or Canadarm2) due to potential lack of redundancy in the robotic system due to either the failed ORU or safe-guards put in place for its R&R. This philosophy was recently challenged upon failure of an external cooling loop pump, the repair of which relied heavily on Canadarm2 support. This paper will discuss the challenges associated with the planning and execution of R&R tasks onboard the ISS post Space Shuttle retirement, focusing on robotics support and using the 2010 failure of an external cooling loop pump module as context. A timeline of events from failure to recovery will be laid out, highlighting lessons learned. Specific challenges associated with this activity included developing products to complete three EVAs in two weeks, preparing crewmembers to perform a specific task for which they had not been trained, and the late decision to rely heavily on use of Canadarm2 for its completion. Attention will also be given to the change in philosophy regarding use of the SSRMS as it applies to the continued maintenance and repair of the International Space Station.

  1. Repairing Damaged Power-Cable Insulation

    Science.gov (United States)

    Baker, G. E.

    1984-01-01

    Simple method saves time, money, and material. In new method cable remains in place while new insulation is applied to damaged portion. Method results in new terminations with safety factor equal to that of any portion of cable.

  2. Neovascularity in patellar tendinopathy and the response to eccentric training: a case report using Power Doppler ultrasound.

    Science.gov (United States)

    McCreesh, Karen M; Riley, Sara J; Crotty, James M

    2013-12-01

    This report describes the case of an amateur soccer player with chronic patellar tendinopathy who underwent ultrasound imaging before and after engaging in an 8-week programme of eccentric exercise. On initial assessment, greyscale ultrasound imaging demonstrated tendon thickening and reduced echogenicity, while Power Doppler imaging demonstrated a large amount of neovascularity. After 8 weeks of an eccentric loading programme, the patient reported significantly improved symptoms and functional scores, while follow-up imaging demonstrated improvement in the echo appearance of the tendon and complete resolution of the neovascularity. The association between neovascularity and symptoms in tendinopathy research is conflicting, with a paucity of research in the area of patellar tendinopathy. While further research is needed to clarify the significance of greyscale and Power Doppler ultrasound changes in relation to symptoms in patellar tendinopathy, ultrasound imaging was shown to be a useful adjunct to diagnosis and outcome assessment in this case. Copyright © 2012 Elsevier Ltd. All rights reserved.

  3. Salvage hypospadias repairs

    Directory of Open Access Journals (Sweden)

    Sripathi V

    2008-01-01

    Full Text Available Aim: Review of our experience and to develop an algorithm for salvage procedures in the management of hypospadias cripples and treatment of urethral strictures following hypospadias repair. Methods: This is a retrospective review of hypospadias surgeries over a 41-month period. Out of a total 168 surgeries, 20 were salvage/re-operative repairs. In three children a Duplay repair was feasible, while in four others a variety of single-stage repairs could be done. The repair was staged in seven children - buccal mucosal grafts (BMGs in five, buccal mucosal tube in one, and skin graft in one. Five children with dense strictures were managed by dorsal BMG inlay grafting in one, vascularized tunical onlay grafting on the ventrum in one, and a free tunical patch in one. Three children were treated by internal urethrotomy and stenting for four weeks with a poor outcome. Results: The age of children ranged from 1.5-15 years (mean 4.5. Follow-up ranged from 3 months to 3.5 years. Excellent results were obtained in 10 children (50% with a well-surfaced erect penis and a slit-like meatus. Glans closure could not be achieved and meatus was coronal in three. Two children developed fistulae following a Duplay repair and following a staged BMG. Three repairs failed completely - a composite repair broke down, a BMG tube stenosed with a proximal leak, and a stricture recurred with loss of a ventral free tunical graft. Conclusions: In salvage procedures performed on hypospadias cripples, a staged repair with buccal mucosa as an inlay in the first stage followed by tubularization 4-6 months later provides good results. A simple algorithm to plan corrective surgery in failed hypospadias cases and obtain satisfactory results is devised.

  4. Universal Drive Train Facility

    Data.gov (United States)

    Federal Laboratory Consortium — This vehicle drive train research facility is capable of evaluating helicopter and ground vehicle power transmission technologies in a system level environment. The...

  5. Effects of Strength Training Using Unstable Surfaces on Strength, Power and Balance Performance Across the Lifespan: A Systematic Review and Meta-analysis.

    Science.gov (United States)

    Behm, David G; Muehlbauer, Thomas; Kibele, Armin; Granacher, Urs

    2015-12-01

    The effectiveness of strength training on unstable surfaces (STU) versus stable surfaces (STS) or a control condition (CON; i.e., no training or regular training only) for strength, power and balance performance across the lifespan has not yet been investigated in a systematic review and meta-analysis. The aims of this systematic review and meta-analysis were to determine the general effects of STU versus STS or CON on muscle strength, power and balance in healthy individuals across the lifespan and to investigate whether performance changes following STU are age specific. A computerized systematic literature search was performed in the electronic databases PubMed and Web of Science from January 1984 up to February 2015. Initially, 209 articles were identified for review. Only controlled trials were included if they investigated STU in healthy individuals and tested at least one measure of maximal strength, strength endurance, muscle power, or static/dynamic balance. In total, 22 studies met the inclusion criteria. The included studies were coded for the following criteria: age, sex, training status, training modality, exercise and test modality. Effect size measures included within-subject standardized mean differences (SMDw) and weighted between-subject standardized mean differences (SMDb). Heterogeneity between studies was assessed using I2 and χ2 statistics. The methodological quality of each study was assessed using the Physiotherapy Evidence Database (PEDro) Scale. Our search failed to identify studies that examined the effects of STU versus STS or CON in children and middle-aged adults. However, four studies were identified that investigated the effects of STU versus CON or STS in adolescents, 15 studies were identified in young adults and three studies were identified in old adults. Compared with CON, STU produced medium effects on maximal strength in young adults and no effects to medium effects in old adults. In addition, large effects were detected on

  6. One session of high-intensity interval training (HIIT) every 5 days, improves muscle power but not static balance in lifelong sedentary ageing men

    Science.gov (United States)

    Sculthorpe, Nicholas F.; Herbert, Peter; Grace, Fergal

    2017-01-01

    Abstract Background: Declining muscle power during advancing age predicts falls and loss of independence. High-intensity interval training (HIIT) may improve muscle power, but remains largely unstudied in ageing participants. Methods: This randomized controlled trial (RCT) investigated the efficacy of a low-frequency HIIT (LfHIIT) intervention on peak muscle power (peak power output [PPO]), body composition, and balance in lifelong sedentary but otherwise healthy males. Methods: Thirty-three lifelong sedentary ageing men were randomly assigned to either intervention (INT; n = 22, age 62.3 ± 4.1 years) or control (n = 11, age 61.6 ± 5.0 years) who were both assessed at 3 distinct measurement points (phase A), after 6 weeks of conditioning exercise (phase B), and after 6 weeks of HIIT once every 5 days in INT (phase C), where control remained inactive throughout the study. Results: Static balance remained unaffected, and both absolute and relative PPO were not different between groups at phases A or B, but increased significantly in INT after LfHIIT (P < 0.01). Lean body mass displayed a significant interaction (P < 0.01) due to an increase in INT between phases B and C (P < 0.05). Conclusions: 6 weeks of LfHIIT exercise feasible and effective method to induce clinically relevant improvements in absolute and relative PPO, but does not improve static balance in sedentary ageing men. PMID:28178145

  7. Polymer concrete for precast repair of continuously reinforced concrete pavement on IH 30, near Mt. Pleasant

    Science.gov (United States)

    Meyer, A. M.; McCullough, B. F.; Fowler, D. W.

    1981-08-01

    Two punchout repairs made in a continuously reinforced concrete pavement (CRCP) using precast portland cement panels are described. The two repairs, one 1.44 sq. ft., the other 36 sq. ft., were completed and opened to traffic in one afternoon. This technique provides a rapid method of repair that produces a repair that is structurally as good or better than the surrounding pavement. With a trained crew, the repair time can be reduced and thus reducing lane closure time. Since lane closure time is a critical consideration in high volume highways, this method is cost effective in those areas.

  8. The effects of 12 weeks of beta-hydroxy-beta-methylbutyrate free acid supplementation on muscle mass, strength, and power in resistance-trained individuals: a randomized, double-blind, placebo-controlled study

    OpenAIRE

    Wilson, Jacob M; Ryan P. Lowery; Joy, Jordan M; Andersen, J. C.; Wilson, Stephanie M C; Stout, Jeffrey R; Duncan, Nevine; Fuller, John C; Baier, Shawn M.; Naimo, Marshall A.; Rathmacher, John

    2014-01-01

    Introduction Studies utilizing beta-hydroxy-beta-methylbutyrate (HMB) supplementation in trained populations are limited. No long-term studies utilizing HMB free acid (HMB-FA) have been conducted. Therefore, we investigated the effects of 12 weeks of HMB-FA supplementation on skeletal muscle hypertrophy, body composition, strength, and power in trained individuals. We also determined the effects of HMB-FA on muscle damage and performance during an overreaching cycle. Methods A three-phase dou...

  9. ''Rueckbau 2014''. KWS Congress regarding decommissioning and dismantling at Zwentendorf nuclear training power plant; ''Rueckbau 2014''. KWS-Rueckbau-Fachtagung im Schulungskernkraftwerk Zwentendorf

    Energy Technology Data Exchange (ETDEWEB)

    Maassen, Herbert [KRAFTWERKSSCHULE E.V. (KWS), Essen (Germany)

    2015-06-01

    From September 24 to 25, 2014, KRAFTWERKS-SCHULE E.V. (KWS) held the congress ''Rueckbau 2014''.This first congress about nuclear power plant decommissioning was combined with an exhibition in the fully equipped Zwentendorf nuclear training power plant. The exhibitors had the opportunity to present and test their products in the ambience of a real nuclear power plant, close to original plant components. The visitors got a general overview of the on-site conditions. During the lectures the process of decommissioning and dismantling of a nuclear power plant were described, problems within this process were discussed, and possible solutions were recommended.

  10. Laparoscopic Incisional Hernia Repair in Obese Patients

    Science.gov (United States)

    2005-01-01

    Background and Objectives: Laparoscopic incisional hernia repair is coming to the forefront as a preferred method of repair due to the advantages offered by minimally invasive techniques. To evaluate safety and feasibility of this approach in obese patients when performed by a general surgeon trained in basic laparoscopy with no prior experience in this technique, we reviewed our early experience in the first 18 patients. Methods: All patients with incisional hernias presenting to a single surgeon from 2000 to 2002 were offered laparoscopic repair. Patients were informed about the limited experience of the surgeon in this particular field. Those who consented were repaired laparoscopically using a standard 4-port technique, one 12-mm port and three 5-mm ports. All patients with body mass index ≥30 were included in this review. A retrospective review of the data included demographics, operative time, blood loss, hospital stay, postoperative complications, and patient satisfaction. Results: Nineteen laparoscopic repairs were completed in 18 patients. No conversions to open repair were necessary. All patients were females except for 2. All hernia sacs were left in place, some of which were empty while others required extensive lysis of adhesions to release sac contents. Mean fascial defect was 102.5 cm2. One defect was closed primarily without mesh, while the rest were closed using Composix mesh in 1 and Dual Plus Gore-Tex mesh in the rest. Three patients were discharged from the recovery room. Mean follow-up was 24 months. No wound or mesh infections occurred. Eight patients had no complications. Eight patients had asymptomatic seromas. Two patients had hematomas; none of them required drainage. One patient had nonspecific dizziness. One patient presented with bowel obstruction secondary to early recurrence (within a week). The repair was salvaged laparoscopically. Upon evaluation by telephone calls, all patients indicated extreme satisfaction with the results

  11. "Dedicated To The Continued Education, Training and Demonstration of PEM Fuel Cell Powered Lift Trucks In Real-World Applications."

    Energy Technology Data Exchange (ETDEWEB)

    Dever, Thomas J.

    2011-11-29

    The project objective was to further assist in the commercialization of fuel cell and H2 technology by building further upon the successful fuel cell lift truck deployments that were executed by LiftOne in 2007, with longer deployments of this technology in real-world applications. We involved facilities management, operators, maintenance personnel, safety groups, and Authorities Having Jurisdiction. LiftOne strived to educate a broad group from many areas of industry and the community as to the benefits of this technology. Included were First Responders from the local areas. We conducted month long deployments with end-users to validate the value proposition and the market requirements for fuel cell powered lift trucks. Management, lift truck operators, Authorities Having Jurisdiction and the general public experienced 'hands on' fuel cell experience in the material handling applications. We partnered with Hydrogenics in the execution of the deployment segment of the program. Air Products supplied the compressed H2 gas and the mobile fueler. Data from the Fuel Cell Power Packs and the mobile fueler was sent to the DOE and NREL as required. Also, LiftOne conducted the H2 Education Seminars on a rotating basis at their locations for lift trucks users and for other selected segments of the community over the project's 36 month duration. Executive Summary The technology employed during the deployments program was not new, as the equipment had been used in several previous demos and early adoptions within the material handling industry. This was the case with the new HyPx Series PEM - Fuel Cell Power Packs used, which had been demo'd before during the 2007 Greater Columbia Fuel Cell Challenge. The Air Products HF-150 Fueler was used outdoors during the deployments and had similarly been used for many previous demo programs. The methods used centered on providing this technology as the power for electric sit-down lift trucks at high profile companies

  12. Progress of peripheral nerve repair

    Institute of Scientific and Technical Information of China (English)

    陈峥嵘

    2002-01-01

    Study on repair of peripheral nerve injury has been proceeding over a long period of time. With the use of microsurgery technique since 1960s,the quality of nerve repair has been greatly improved. In the past 40 years, with the continuous increase of surgical repair methods, more progress has been made on the basic research of peripheral nerve repair.

  13. Achilles tendon repair

    Science.gov (United States)

    Achilles tendon rupture-surgery; Percutaneous Achilles tendon rupture repair ... To fix your torn Achilles tendon, the surgeon will: Make a cut down the back of your heel Make several small cuts rather than one large cut ...

  14. Diaphragmatic hernia repair - slideshow

    Science.gov (United States)

    ... presentations/100014.htm Diaphragmatic hernia repair - series—Normal anatomy To use the sharing ... Overview The chest cavity includes the heart and lungs. The abdominal cavity includes the liver, the stomach, ...

  15. Eye muscle repair - slideshow

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/presentations/100062.htm Eye muscle repair - series—Normal anatomy To use the sharing ... the eyeball to the eye socket. The external muscles of the eye are found behind the conjunctiva. ...

  16. Tracheoesophageal fistula repair - slideshow

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/presentations/100103.htm Tracheoesophageal fistula repair - series—Normal anatomy To use the sharing ... Editorial team. Related MedlinePlus Health Topics Esophagus Disorders Fistulas Tracheal Disorders A.D.A.M., Inc. is ...

  17. Inguinal hernia repair - slideshow

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/presentations/100027.htm Inguinal hernia repair - series—Normal anatomy To use the sharing ... to slide 4 out of 4 Overview A hernia occurs when part of an organ protrudes through ...

  18. Pectus excavatum repair - slideshow

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/presentations/100035.htm Pectus excavatum repair - series—Normal anatomy To use the sharing ... Go to slide 4 out of 4 Overview Pectus excavatum is a deformity of the front of the ...

  19. Hiatal hernia repair - slideshow

    Science.gov (United States)

    ... presentations/100028.htm Hiatal hernia repair - series—Normal anatomy To use the sharing features on ... Overview The esophagus runs through the diaphragm to the stomach. It functions to carry food from the mouth ...

  20. Repairing ceramic insulating tiles

    Science.gov (United States)

    Dunn, B. R.; Laymance, E. L.

    1980-01-01

    Fused-silica tiles containing large voids or gauges are repaired without adhesives by plug insertion method. Tiles are useful in conduits for high-temperature gases, in furnaces, and in other applications involving heat insulation.

  1. Rotator cuff repair - slideshow

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/presentations/100229.htm Rotator cuff repair - series—Normal anatomy To use the sharing ... to slide 4 out of 4 Overview The rotator cuff is a group of muscles and tendons that ...

  2. Cleft lip repair - slideshow

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/presentations/100010.htm Cleft lip repair - series—Normal anatomy To use the sharing ... abnormal opening in the middle of the upper lip. A cleft palate is an opening in the roof of ...

  3. Grey Repairable System Analysis

    Institute of Scientific and Technical Information of China (English)

    Renkuan Guo; Charles Ernie Love

    2006-01-01

    In this paper, we systematically discuss the basic concepts of grey theory, particularly the grey differential equation and its mathematical foundation, which is essentially unknown in the reliability engineering community. Accordingly,we propose a small-sample based approach to estimate repair improvement effects by partitioning system stopping times into intrinsic functioning times and repair improvement times. An industrial data set is used for illustrative purposes in a stepwise manner.

  4. «KILLOLOGY» – THE SCIENCE OF MURDER – IN PSYCHO-PEDAGOGICAL TRAINING IN POWER STRUCTURES OF THE USA

    Directory of Open Access Journals (Sweden)

    Oleg Jurevich Efremov

    2015-12-01

    Full Text Available Purpose. The article considers the psychological-pedagogical bases of preparation of employees of power structures of the USA to the use of weapons in a combat situation.Methodology. The article is based on an analysis of the views of foreign military psychologists on the nature of psychological mechanisms to overcome the fear to kill and to be killed on the battlefield.Results. It is noted that the «science of murder» helps to better understand the psychology of the American military and police personnel and their activities in situations of risk to life.Practical implications. In educational work with the Russian military personnel are encouraged to focus attention on an impartial study and rational use of the experience of military psychologists in the USA.

  5. Improved Shoulder Joint Function through Rehabilitation Training after Arthroscopic Repair of Superior Labrum Anterior Posterior Tear%康复训练对肩关节镜下SLAP损伤修复术后患者肩关节功能恢复的影响

    Institute of Scientific and Technical Information of China (English)

    崔芳; 王惠芳; 王予彬; 李振华; 况春艳; 毕然然

    2013-01-01

    Objective To study the shoulder joint function after arthroscopic repair of superior labrum anterior posterior tear through rehabilitation training.Methods 46 cases suffered from superior labrum anterior posterior tear were repaired by arthroscopy,and were divided into rehabilitation training group (24 cases) and control group (22 cases) in random manner.Rehabilitation training group included 14 men and 8 women,aged from 22 to 45 years(36.2±2.6 years).Control group included 14 men and 10 women,aged from 20 to 43 years (35.8±2.1 years).Patients in the two groups received routine NSAIDs medicine,short wave,pulsed magnetic,and laser therapy.Patients in rehabilitation training group started rehabilitation program 1 day after arthroscopic repair.UCLA (University of California at Los Angeles) shoulder scores were adopted for evaluation of the shoulder joint function at the 4th,8th,12th,16th and 24th week after surgery.Results Results showed that after 12,16 and 24 weeks of surgery,functional satisfaction,pain relief and UCLA scores in rehabilitation training group were significantly better than in control group(P < 0.05 or P < 0.01).Conclusion Rehabilitation training significantly improves shoulder joint function after arthroscopic repair of superior labrum anterior posterior tear.%目的:探讨康复训练对肩关节镜下SLAP损伤修复术后患者肩关节功能恢复的影响.方法:将2005年3月至2012年11月行肩关节镜下SLAP损伤修复术后患者46例,随机分为康复组和对照组,其中康复组24例,男14例,女10例,年龄22~45岁,平均(36.2±2.6)岁;对照组22例,男14例,女8例,年龄20~43岁,平均(35.8±2.1)岁.两组患者均采用常规非甾体类抗炎药物和短波、脉冲磁疗及激光治疗.康复组同时按肩关节SLAP损伤术后康复计划进行康复训练.采用美国加州大学肩评分表(UCLA)评估其疗效.结果:两组患者术后4周肩关节功能评分无显著性差异(P>0.05),术后8周康复治

  6. Satisfaction, function and repair integrity after arthroscopic versus mini-open rotator cuff repair.

    Science.gov (United States)

    Barnes, L A Fink; Kim, H M; Caldwell, J-M; Buza, J; Ahmad, C S; Bigliani, L U; Levine, W N

    2017-02-01

    Advances in arthroscopic techniques for rotator cuff repair have made the mini-open approach less popular. However, the mini-open approach remains an important technique for repair for many surgeons. The aims of this study were to compare the integrity of the repair, the function of the shoulder and satisfaction post-operatively using these two techniques in patients aged > 50 years. We identified 22 patients treated with mini-open and 128 patients treated with arthroscopic rotator cuff repair of July 2007 and June 2011. The mean follow-up was two years (1 to 5). Outcome was assessed using the American Shoulder and Elbow Surgeons (ASES) and Simple Shoulder Test (SST) scores, and satisfaction. The integrity of the repair was assessed using ultrasonography. A power analysis ensured sufficient enrolment. There was no statistically significant difference between the age, function, satisfaction, or pain scores (p > 0.05) of the two groups. The integrity of the repair and the mean SST scores were significantly better in the mini-open group (91% of mini-open repairs were intact versus 60% of arthroscopic repairs, p = 0.023; mean SST score 10.9 (standard deviation (sd) 1.3) in the mini-open group; 8.9 (sd 3.5) in arthroscopic group; p = 0.003). The ASES scores were also higher in the mini-open group (mean ASES score 91.0 (sd 10.5) in mini-open group; mean 82.70 (sd 19.8) in the arthroscopic group; p = 0.048). The integrity of the repair and function of the shoulder were better after a mini-open repair than after arthroscopic repair of a rotator cuff tear in these patients. The functional difference did not translate into a difference in satisfaction. Mini-open rotator cuff repair remains a useful technique despite advances in arthroscopy. Cite this article: Bone Joint J 2017;99-B:245-9. ©2017 The British Editorial Society of Bone & Joint Surgery.

  7. High-intensity interval training and β-hydroxy-β-methylbutyric free acid improves aerobic power and metabolic thresholds

    Science.gov (United States)

    2014-01-01

    Background Previous research combining Calcium β-hydroxy-β-methylbutyrate (CaHMB) and running high-intensity interval training (HIIT) have shown positive effects on aerobic performance measures. The purpose of this study was to examine the effect of β-hydroxy-β-methylbutyric free acid (HMBFA) and cycle ergometry HIIT on maximal oxygen consumption (VO2peak), ventilatory threshold (VT), respiratory compensation point (RCP) and time to exhaustion (Tmax) in college-aged men and women. Methods Thirty-four healthy men and women (Age: 22.7 ± 3.1 yrs ; VO2peak: 39.3 ± 5.0 ml · kg-1 · min-1) volunteered to participate in this double-blind, placebo-controlled design study. All participants completed a series of tests prior to and following treatment. A peak oxygen consumption test was performed on a cycle ergometer to assess VO2peak, Tmax, VT, and RCP. Twenty-six participants were randomly assigned into either a placebo (PLA-HIIT) or 3 g per day of HMBFA (BetaTor™) (HMBFA-HIIT) group. Eight participants served as controls (CTL). Participants in the HIIT groups completed 12 HIIT (80-120% maximal workload) exercise sessions consisting of 5–6 bouts of a 2:1 minute cycling work to rest ratio protocol over a four-week period. Body composition was measured with dual energy x-ray absorptiometry (DEXA). Outcomes were assessed by ANCOVA with posttest means adjusted for pretest differences. Results The HMBFA-HIIT intervention showed significant (p HIIT group. Both PLA-HIIT and HMBFA-HIIT treatment groups demonstrated significant (p HIIT and HMBFA-HIIT groups. Conclusions Our findings support the use of HIIT in combination with HMBFA to improve aerobic fitness in college age men and women. These data suggest that the addition of HMBFA supplementation may result in greater changes in VO2peak and VT than HIIT alone. Study registration The study was registered on ClinicalTrials.gov (ID NCT01941368). PMID:24782684

  8. Repair of overheating linear accelerator

    Energy Technology Data Exchange (ETDEWEB)

    Barkley, Walter; Baldwin, William; Bennett, Gloria; Bitteker, Leo; Borden, Michael; Casados, Jeff; Fitzgerald, Daniel; Gorman, Fred; Johnson, Kenneth; Kurennoy, Sergey; Martinez, Alberto; O’Hara, James; Perez, Edward; Roller, Brandon; Rybarcyk, Lawrence; Stark, Peter; Stockton, Jerry

    2004-01-01

    Los Alamos Neutron Science Center (LANSCE) is a proton accelerator that produces high energy particle beams for experiments. These beams include neutrons and protons for diverse uses including radiography, isotope production, small feature study, lattice vibrations and material science. The Drift Tube Linear Accelerator (DTL) is the first portion of a half mile long linear section of accelerator that raises the beam energy from 750 keV to 100 MeV. In its 31st year of operation (2003), the DTL experienced serious issues. The first problem was the inability to maintain resonant frequency at full power. The second problem was increased occurrences of over-temperature failure of cooling hoses. These shortcomings led to an investigation during the 2003 yearly preventative maintenance shutdown that showed evidence of excessive heating: discolored interior tank walls and coper oxide deposition in the cooling circuits. Since overheating was suspected to be caused by compromised heat transfer, improving that was the focus of the repair effort. Investigations revealed copper oxide flow inhibition and iron oxide scale build up. Acid cleaning was implemented with careful attention to protection of the base metal, selection of components to clean and minimization of exposure times. The effort has been very successful in bringing the accelerator through a complete eight month run cycle allowing an incredible array of scientific experiments to be completed this year (2003-2004). This paper will describe the systems, investigation analysis, repair, return to production and conclusion.

  9. Effectiveness of dual-task functional power training for preventing falls in older people: study protocol for a cluster randomised controlled trial.

    Science.gov (United States)

    Daly, Robin M; Duckham, Rachel L; Tait, Jamie L; Rantalainen, Timo; Nowson, Caryl A; Taaffe, Dennis R; Sanders, Kerrie; Hill, Keith D; Kidgell, Dawson J; Busija, Lucy

    2015-03-27

    Falls are a major public health concern with at least one third of people aged 65 years and over falling at least once per year, and half of these will fall repeatedly, which can lead to injury, pain, loss of function and independence, reduced quality of life and even death. Although the causes of falls are varied and complex, the age-related loss in muscle power has emerged as a useful predictor of disability and falls in older people. In this population, the requirements to produce explosive and rapid movements often occurs whilst simultaneously performing other attention-demanding cognitive or motor tasks, such as walking while talking or carrying an object. The primary aim of this study is to determine whether dual-task functional power training (DT-FPT) can reduce the rate of falls in community-dwelling older people. The study design is an 18-month cluster randomised controlled trial in which 280 adults aged ≥65 years residing in retirement villages, who are at increased risk of falling, will be randomly allocated to: 1) an exercise programme involving DT-FPT, or 2) a usual care control group. The intervention is divided into 3 distinct phases: 6 months of supervised DT-FPT, a 6-month 'step down' maintenance programme, and a 6-month follow-up. The primary outcome will be the number of falls after 6, 12 and 18 months. Secondary outcomes will include: lower extremity muscle power and strength, grip strength, functional assessments of gait, reaction time and dynamic balance under single- and dual-task conditions, activities of daily living, quality of life, cognitive function and falls-related self-efficacy. We will also evaluate the cost-effectiveness of the programme for preventing falls. The study offers a novel approach that may guide the development and implementation of future community-based falls prevention programmes that specifically focus on optimising muscle power and dual-task performance to reduce falls risk under 'real life' conditions in older

  10. Detecting and Correcting Speech Repairs

    CERN Document Server

    Heeman, P A; Heeman, Peter; Allen, James

    1994-01-01

    Interactive spoken dialog provides many new challenges for spoken language systems. One of the most critical is the prevalence of speech repairs. This paper presents an algorithm that detects and corrects speech repairs based on finding the repair pattern. The repair pattern is built by finding word matches and word replacements, and identifying fragments and editing terms. Rather than using a set of prebuilt templates, we build the pattern on the fly. In a fair test, our method, when combined with a statistical model to filter possible repairs, was successful at detecting and correcting 80\\% of the repairs, without using prosodic information or a parser.

  11. Thinking On strengthening the electric power enterprise staff education training%关于加强电力企业职工教育培训工作的思考

    Institute of Scientific and Technical Information of China (English)

    李淼

    2014-01-01

    电力是我国社会经济发展的主要能源,电力企业职工的整体素质直接影响到电力企业的运行安全和效率,所以加强电力企业职工教育培训工作十分必要。%Electricity is the main energy in the development of our social economy, the electric power enterprise staffs' overall quality directly affects the operation of the electric power enterprises safety and efficiency, so it is necessary to strengthen the electric power enterprise staff education training work.

  12. The effects of modified exponential tapering technique on perceived exertion, heart rate, time trial performance, VO2max and power output among highly trained junior cyclists.

    Science.gov (United States)

    Ishak, Asmadi; Hashim, Hairul A; Krasilshchikov, Oleksandr

    2016-09-01

    The present study investigated the effects of a 2-week modified exponential taper on physiological adaptation and time trial performance among junior cyclists. Participants (N.=27) with the mean age of 16.95±0.8 years, height of 165.6±6.1 cm and weight of 54.19±8.1 kg were matched into either modified exponential taper (N.=7), normal exponential taper (N.=7), or control (N.=7) groups using their initial VO2max values. Both experimental groups followed a 12-week progressive endurance training program and subsequently, a 2-week tapering phase. A simulated 20-km time trial performance along with VO2max, power output, heart rate and rating of perceived exertion were measured at baseline, pre and post-taper. One way ANOVA was used to analyze the difference between groups before the start of the intervention while mixed factorial ANOVA was used to analyze the difference between groups across measurement sessions. When homogeneity assumption was violated, the Greenhouse-Geisser Value was used for the corrected values of the degrees of freedom for the within subject factor the analysis. Significant interactions between experimental groups and testing sessions were found in VO2max (F=6.67, df=4, P<0.05), power output (F=5.02, df=4, P<0.05), heart rate (F=10.87, df=2.51, P<0.05) rating of perceived exertion (F=13.04, df=4, P<0.05) and 20KM time trial (F=4.64, df=2.63, P<0.05). Post-hoc analysis revealed that both types of taper exhibited positive effects compared to the non-taper condition in the measured performance markers at post-taper while no different were found between the two taper groups. It was concluded that both taper protocols successfully inducing physiological adaptations among the junior cyclists by reducing the volume and maintaining the intensity of training.

  13. The effect of acute L-Carnitine supplementation on the blood lactate, glucose, VO2max and power in trained men: a brief report

    Directory of Open Access Journals (Sweden)

    Arazi H

    2013-04-01

    Full Text Available Background: Probably L-Carnitine can induce increasing of Pyruvate dehydrogenase activity, decreasing of lactic acid production and performance improvements due to the reinforcement of long chain fatty acid oxidation and stabilize of Coenzyme A (CoASH to free Coenzyme A (COA. Based on this, the aim of this study was to investigate the effect of acute L-Carnitine supplementation on blood lactate, glucose, VO2max and anaerobic power in trained men.Methods: Sixteen trained men (aged 19-23 volunteers from University of Guilan, facul-ty of Physical Education and Sport Sciences participated as subjects in this investiga-tion. Subjects divided to aerobic (A and anaerobic (An group randomly. In a double blind design, subjects participated in two separated tests by one week. Subjects ingested 3 grams of L-Carnitine supplementation or placebo (maltodextrin 90 minute before aerobic and anaerobic exercise. For aerobic activity used shuttle run 20 meter and for anaerobic activity used RAST test. Blood samples were collected 5 minute prior at rest and 4 minute post tests. Participants were asked in the morning to obtain fasting blood samples and perform tests. A t-test was used to detect differences between supplementa-tion and placebo groups in each exercise.Results: L-Carnitine group ((A 141.25±20.62 and (An 145.38±55.47 significantly had lower lactate concentration than placebo ((A 151.00±20.85 and (An 152.50±28.59 after tests (P≤0.05. L-Carnitine group ((A 136.00±19.74 and (An 115.50±13.64 had significa-ntly higher blood glucose compared to placebo ((A 121.62±15.65 and (An 110.12±12.63 too (P≤0.05. Also, VO2max, mean and maximum anaerobic power in L-Carnitine group were significantly more than ones in placebo (P<0.05.Conclusion: These findings indicate that acute oral supplementation of L-Carnitine can induce fatigue decreasing and improvement of aerobic and anaerobic performance.

  14. 基于地理空间信息多视图的电力故障全景抢修应用%Application of multi-view panoramic power fault repair based on geographic information

    Institute of Scientific and Technical Information of China (English)

    王鹏; 苏华衍

    2014-01-01

    针对传统故障抢修过程95598客户服务中心与抢修班组沟通不及时、抢修信息反馈滞后,客户及时获知复电时间困难等问题,基于GIS的可视化展现优势集成营销业务应用系统建设的营销GIS应用系统,利用计算机、互联网、无线网络(GPRS、GPS)等技术,通过智能移动终端(PDA)、单兵视频等移动通讯终端,实时反馈现场抢修信息和现场抢修视频。结合系统互动界面、服务在线监控等应用为远程工作站合理调度车辆、合理分工派单、缩短抢修时间提供技术支撑,实现95598客户服务中心快速响应客户,保障抢修信息准确,提升客户感知,提高客户服务效率。%There are some problems in the traditional fault repair process, for example, the 95598 customer service centre and repair team cannot communicate timely, the repair information feedback lags behind, and the customer cannot timely know the recovery time. Based on GIS visualization show advantage and integrating marketing business application system, this paper constructs the Marketing GIS Application System. Using the computer, the Internet and wireless network (GPRS, GPS) technology, through the mobile telecom terminals such as intelligent mobile terminal (PDA) and individual soldier video, the real-time feedback of the field repair information and video can be realized. The application such as system interaction interface and service online monitoring can provide technical support for remote workstation in terms of reasonable vehicle dispatch, rational division of labor and shortening the repair time, so the 95598 customer service center can fast response to customer, the security repair information can be more accurate, the customer perception can be improved, as well as the efficiency of customer service.

  15. 三门核电辐射防护模拟培训设计%The Design of Simulation-Training for Radiation Protection in Sanmen Nuclear Power Company

    Institute of Scientific and Technical Information of China (English)

    陈云飞

    2015-01-01

    结合三门核电开展辐射防护模拟培训的经验 ,探讨核电厂辐射防护培训的开展模式 ,分析辐射防护模拟培训开展的必要性与可行性.按模块化、标准化、多样化的设计理念 ,构建了核电厂辐射防护模拟培训设计模型.%When discussing the Radiation Protection (RP ) training models ,it's impossible to ignore the nec-essary and practicability of Simulation-Training .Basing on the experience of RP Simulation-Training in Sanmen Nuclear Power Company ,a brand new training model was proposed ,with a designing idea of being modular , standardized and diversified .

  16. Reduction of forced strengths generated by wagging and snaking of the rotor in the power strain of wind power plants. With the help of newly developed components the sensitive components of power trains of the wind power plants are decoupled from forced movements and forced strengths of the machine support. This contributes to the reduction of damages in bearings and transmission.; Reduzierung der durch Nick- und Gierschwingung des Rotors erzeugten Zwangskraefte im Triebstrang von Windkraftanlagen. Mit Hilfe neu entwickelter Komponenten werden die sensiblen Triebstrangkomponenten der Windkraftanlagen von Zwangsbewegungen und entsprechenden Zwangskraeften des Maschinentraegers entkoppelt. Dies traegt zur Verringerung von Lager- und Getriebeschaeden bei

    Energy Technology Data Exchange (ETDEWEB)

    Mitsch, Franz [ESM GmbH, Rimbach (Germany)

    2010-07-01

    In the last years, the performance of wind power plants has increased enormously. Thus, within the last 15 years the average performance of wind power plants increased by a factor of nearly 10 and actually amounts more than 2 MW. The tendency still is rising. Due to the enhanced performance and thus due to the smaller frequencies, the moments and forces at the rotor blade and in power train increase extra proportionally. Due to economic and technical reasons, the supporting structure of the power train of large plants cannot be built infinitely rigid. Larger deformations of the supporting structure must be accepted. At the same time, too high additional loads shall not be transferred to the rotating mechanical engineering parts such as generator, transmission, bearings and clutches. The contribution under consideration describes new elastomeric construction units which minimize the additional forces due to deformations of the machine support and power train.

  17. Groin hernia repair in young males: mesh or sutured repair?

    DEFF Research Database (Denmark)

    Bisgaard, T; Bay-Nielsen, M; Kehlet, H

    2010-01-01

    Large-scale data for the optimal inguinal hernia repair in younger men with an indirect hernia is not available. We analysed nationwide data for risk of reoperation in younger men after a primary repair using a Lichtenstein operation or a conventional non-mesh hernia repair....

  18. Cleft lip and palate repair

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/002979.htm Cleft lip and palate repair To use the sharing features on this page, please enable JavaScript. Cleft lip and cleft palate repair is surgery to fix birth defects ...

  19. Abdominal aortic aneurysm repair - open

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/007392.htm Abdominal aortic aneurysm repair - open To use the sharing features on this page, please enable JavaScript. Open abdominal aortic aneurysm repair is surgery to fix a widened part ...

  20. Current options in local anesthesia for groin hernia repairs.

    Science.gov (United States)

    Kulacoglu, Hakan; Alptekin, Alp

    2011-01-01

    Inguinal hernia repair is one of the most common procedures in general surgery. All anesthetic methods can be used in inguinal hernia repairs. Local anesthesia for groin hernia repair had been introduced at the very beginning of the last century, and gained popularity following the success reports from the Shouldice Hospital, and the Lichtenstein Hernia Institute. Today, local anesthesia is routinely used in specialized hernia clinics, whereas its use is still not a common practice in general hospitals, in spite of its proven advantages and recommendations by current hernia repair guidelines. In this review, the technical options for local anaesthesia in groin hernia repairs, commonly used local anaesthetics and their doses, potential complications related to the technique are evaluated. A comparison of local, general and regional anesthesia methods is also presented. Local anaesthesia technique has a short learning curve requiring simple training. It is easy to learn and apply, and its use is in open anterior repairs a nice way for health care economics. Local anesthesia has been shown to have certain advantages over general and regional anesthesia in inguinal hernia repairs. It is more economic and requires a shorter time in the operating room and shorter stay in the institution. It causes less postoperative pain, requires less analgesic consumption; avoids nausea, vomiting, and urinary retention. Patients can mobilize and take oral liquids and solid foods much earlier. Most importantly, local anesthesia is the most suitable type of anesthesia in elder, fragile patients and patients with ASA II-IV scores.

  1. “南海挑战”号坞修及主电站国产化方案的技术创新%Technical Renovation in the Dry Dock Repair of Nanhai-Tiaozhan FPS and Its Power Generator Nationalization

    Institute of Scientific and Technical Information of China (English)

    冒家友; 高奇; 侴岩

    2014-01-01

    “南海挑战”号FPS干坞大修过程中成功解决了安全、质量、进度及费用等难题,攻克了满堂承重脚手架搭拆、桩腿修复、驻坞、倾斜试验等难关。介绍坞修工程子项目的流花电站扩容的原油主电站国产化方案,突破了机组倾斜角特殊要求、机组排放新要求、平台空间限制及电站并网等难关。%In the dry dock repairing project of "Nanhai Tiaozhan"FPS, the challenges from safety , quality, schedule and cost are overcome .New solutions are employed to solve the problems such as full scale load bearing scaffolding , column pitting repair , multiple dry dock flooding solution , inclination test .The plan of upgrading the FPS power generator sets with nationalized brand in the dry dock program are introduced , including special ABS requirement on inclination angle; new rules for emission control;space limitation and different brand and power synchronization .

  2. Study on the measures to enhance the training effect of electric power enterprises%关于提升电力企业培训效果的措施探析

    Institute of Scientific and Technical Information of China (English)

    徐伶

    2014-01-01

    如今社会,电力行业迅猛发展,但电力企业的面临着良好发展机会的同时也面临激烈的竞争。为了促进电力企业的健康稳定发展,提高电力企业的竞争实力,电力企业就要重视电力企业员工专业素质和技能。人才素质是决定企业发展能否长远的主要标准之一,提升电力企业培训效果要求电力企业从自身的发展实际出发,结合企业员工的发展需要,积极探索提升电力企业培训效果的举措,最大程度地发挥电力企业人才的作用。%Nowadays, the electric power industry is developing rapidly, but the power companies are faced with good opportunities and also faces intense competition. In order to promote the healthy and stable development of the electric power enterprises, improve the electric power enterprise's competition strength, power enterprises should pay attention to the electric power enterprise employee professional qualities and skills. The quality of talents is one of the main criteria determine whether long-term development of enterprises. To enhance the training effect of electric power enterprise requirements of power enterprise own development from the reality, combined with the needs of the development of enterprises, and actively explore to enhance the training effect of electric power enterprise initiatives, to maximize the role of electric power enterprise talent.

  3. Method of bond graph for distinguishing power flow of closed planetary gear train%封闭式行星轮系功率流判别的键合图法

    Institute of Scientific and Technical Information of China (English)

    李庆凯; 唐德威; 姜生元; 邓宗全

    2012-01-01

    为更简单清晰地对封闭式行星轮系的功率流情况进行判别,利用键合图能量守恒和功率流动的特点,将键合图理论应用于该类轮系的功率流分析中.以功率汇流型、回流型2种形式的封闭式行星轮系为例,根据轮系的传动关系,利用绝对速度法建立轮系的键合图模型,根据提出的功率流向判别依据对轮系进行功率流向判别,得到整个轮系及其转换机构的功率流情况,为轮系的效率计算提供了基础.该方法适用于其它复杂轮系的功率流判别中,比传统方法更具直观性、系统性.%In order to distinguish the power flow of the closed planetary gear train more simply and clearly,the theory of bond graph was applied for the analysis of power flow of the gear train utilizing the characteristic of conversation of energy and power fluxion of bond graph.Taking the power regurgitant and confluence style of the gear trains for examples,the bond graph model of the gear trains was established according to the transmission relationships and the method of absolute speed.And then the power flow of the gear trains,as well as the conversion mechanism,was got after distinguishing the power flow basing on the discriminant,which provides the foundation for the efficiency computing.This method which is more intuitionistic and systematic than the traditional methods could be applied in the power flow judgement of other complex gear trains.

  4. Nanomaterials promise better bone repair

    OpenAIRE

    Qifei Wang; Jianhua Yan; Junlin Yang; Bingyun Li

    2016-01-01

    Nanomaterials mimicking the nano-features of bones and offering unique smart functions are promising for better bone fracture repair. This review provides an overview of the current state-of-the-art research in developing and using nanomaterials for better bone fracture repair. This review begins with a brief introduction of bone fracture repair processes, then discusses the importance of vascularization, the role of growth factors in bone fracture repair, and the failure of bone fracture rep...

  5. Laparoscopic repair of femoral hernia

    OpenAIRE

    Yang, Xue-Fei; Liu, Jia-Lin

    2016-01-01

    Laparoscopic repair of inguinal hernia is mini-invasive and has confirmed effects. Femoral hernia could be repaired through the laparoscopic procedures for inguinal hernia. These procedures have clear anatomic view in the operation and preoperatively undiagnosed femoral hernia could be confirmed and treated. Lower recurrence ratio was reported in laparoscopic procedures compared with open procedures for repair of femoral hernia. The technical details of laparoscopic repair of femoral hernia, ...

  6. Aircraft Propeller Hub Repair

    Energy Technology Data Exchange (ETDEWEB)

    Muth, Thomas R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Peter, William H. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2015-02-13

    The team performed a literature review, conducted residual stress measurements, performed failure analysis, and demonstrated a solid state additive manufacturing repair technique on samples removed from a scrapped propeller hub. The team evaluated multiple options for hub repair that included existing metal buildup technologies that the Federal Aviation Administration (FAA) has already embraced, such as cold spray, high velocity oxy-fuel deposition (HVOF), and plasma spray. In addition the team helped Piedmont Propulsion Systems, LLC (PPS) evaluate three potential solutions that could be deployed at different stages in the life cycle of aluminum alloy hubs, in addition to the conventional spray coating method for repair. For new hubs, a machining practice to prevent fretting with the steel drive shaft was recommended. For hubs that were refurbished with some material remaining above the minimal material condition (MMC), a silver interface applied by an electromagnetic pulse additive manufacturing method was recommended. For hubs that were at or below the MMC, a solid state additive manufacturing technique using ultrasonic welding (UW) of thin layers of 7075 aluminum to the hub interface was recommended. A cladding demonstration using the UW technique achieved mechanical bonding of the layers showing promise as a viable repair method.

  7. Development of a wheelchair maintenance training programme and questionnaire for clinicians and wheelchair users.

    Science.gov (United States)

    Toro, Maria Luisa; Bird, Emily; Oyster, Michelle; Worobey, Lynn; Lain, Michael; Bucior, Samuel; Cooper, Rory A; Pearlman, Jonathan

    2017-11-01

    Purpose of state: The aims of this study were to develop a Wheelchair Maintenance Training Programme (WMTP) as a tool for clinicians to teach wheelchair users (and caregivers when applicable) in a group setting to perform basic maintenance at home in the USA and to develop a Wheelchair Maintenance Training Questionnaire (WMT-Q) to evaluate wheelchair maintenance knowledge in clinicians, manual and power wheelchair users. The WMTP and WMT-Q were developed through an iterative process. A convenience sample of clinicians (n = 17), manual wheelchair (n ∞ 5), power wheelchair users (n = 4) and caregivers (n = 4) provided feedback on the training programme. A convenience sample of clinicians (n = 38), manual wheelchair (n = 25), and power wheelchair users (n = 30) answered the WMT-Q throughout different phases of development. The subscores of the WMT-Q achieved a reliability that ranged between ICC(3,1) = 0.48 to ICC(3,1) = 0.89. The WMTP and WMT-Q were implemented with 15 clinicians who received in-person training in the USA using the materials developed and showed a significant increase in all except one of the WMT-Q subscores after the WMTP (p maintenance knowledge. Implications for Rehabilitation The Wheelchair Maintenance Training Program can be used to educate rehabilitation clinicians and technicians to improve wheelchair service and delivery to end users. This training complements the World Health Organization basic wheelchair service curriculum, which only includes training of the clinicians, but does not include detailed information to train wheelchair users and caregivers. This training program offers a time efficient method for providing education to end users in a group setting that may mitigate adverse consequences resulting from wheelchair breakdown. This training program has significant potential for impact among wheelchair users in areas where access to repair services is limited.

  8. Nanomaterials promise better bone repair

    Directory of Open Access Journals (Sweden)

    Qifei Wang

    2016-10-01

    Full Text Available Nanomaterials mimicking the nano-features of bones and offering unique smart functions are promising for better bone fracture repair. This review provides an overview of the current state-of-the-art research in developing and using nanomaterials for better bone fracture repair. This review begins with a brief introduction of bone fracture repair processes, then discusses the importance of vascularization, the role of growth factors in bone fracture repair, and the failure of bone fracture repair. Next, the review discusses the applications of nanomaterials for bone fracture repair, with a focus on the recent breakthroughs such as nanomaterials leading to precise immobilization of growth factors at the molecular level, promoting vascularization without the use of growth factors, and re-loading therapeutic agents after implantation. The review concludes with perspectives on challenges and future directions for developing nanomaterials for improved bone fracture repair.

  9. The effects of phosphatidic acid supplementation on strength, body composition, muscular endurance, power, agility, and vertical jump in resistance trained men.

    Science.gov (United States)

    Escalante, Guillermo; Alencar, Michelle; Haddock, Bryan; Harvey, Phillip

    2016-01-01

    Phosphatidic acid (PA) is a lipid messenger that has been shown to increase muscle protein synthesis via signaling stimulation of the mammalian target of rapamycin (mTOR). MaxxTOR® (MT) is a supplement that contains PA as the main active ingredient but also contains other synergistic mTOR signaling substances including L-Leucine, Beta-Hydroxy-Beta-Methylbutyrate (HMB), and Vitamin D3. Eighteen healthy strength-trained males were randomly assigned to a group that either consumed MT (n = 8, 22.0 +/- 2.5 years; 175.8 +/- 11.5 cm; 80.3 +/- 15.1 kg) or a placebo (PLA) (n = 10, 25.6 +/- 4.2 years; 174.8 +/- 9.0 cm; 88.6 +/- 16.6 kg) as part of a double-blind, placebo controlled pre/post experimental design. All participants volunteered to complete the three day per week resistance training protocol for the eight week study duration. To determine the effects of MT, participants were tested on one repetition maximum (1RM) leg press strength (LP), 1RM bench press strength (BP), push-ups to failure (PU), vertical jump (VJ), pro-agility shuttle time (AG), peak power output (P), lean body mass (LBM), fat mass (FM), and thigh muscle mass (TMM). Subjects were placed and monitored on an isocaloric diet consisting of 25 protein, 50 carbohydrates, and 25 % fat by a registered dietitian. Separate two-way mixed factorial repeated measures ANOVA's (time [Pre, Post] x group [MT and PLA] were used to investigate strength, body composition, and other performance changes. Post-hoc tests were applied as appropriate. Analysis were performed via SPSS with significance at (p ≤ 0.05). There was a significant main effect (F(1,16) = 33.30, p < 0.001) for LBM where MT significantly increased LBM when compared to the PLA group (p < 0.001). Additionally, there was a significant main effect for LP (F(1,16) = 666.74, p < 0.001) and BP (F(1,16) = 126.36, p < 0.001) where both increased significantly more in MT than PLA group (p < 0.001). No

  10. ''Rueckbau 2014''. KWS congress regarding decommissioning and dismantling at nuclear training power plant Zwentendorf; ''Rueckbau 2014''. KWS-Rueckbau-Fachtagung im Schulungskernkraftwerk Zwentendorf

    Energy Technology Data Exchange (ETDEWEB)

    Maassen, Herbert [KRAFTWERKSSCHULE e.V. (KWS), Essen (Germany)

    2015-05-15

    From September 24th to 25th, 2014 the KRAFTWERKSSCHULE E.V. (KWS) held the congress ''Rueckbau 2014''. This first congress about the deconstruction of nuclear power plants was combined with an exhibition in the fully equipped nuclear training power plant Zwentendorf. The exhibitors had the opportunity to present and test their products in the ambience of a real nuclear power plant, close to original plant components. The visitors got a general overview of the on-site conditions. During the lectures the process of decommissioning and dismantling of a nuclear power plant was described, problems within this process were discussed, and possible solutions were recommended. The congress influenced significantly the dialogue of all parties involved and contributed to an extensive exchange of knowledge and experience.

  11. Effect of acupuncture combined with rehabilitation training on walking function after arthroscopic meniscus repair%针刺配合康复训练对膝关节半月板损伤术后步行功能的影响

    Institute of Scientific and Technical Information of China (English)

    刘新荣; 李旗

    2015-01-01

    目的:观察针刺配合康复训练对膝关节半月板损伤关节镜术后患者步行功能的影响。方法:将60例半月板损伤关节镜术后患者按随机数字表法分为两组,每组30例。观察组予针刺结合常规康复训练治疗,对照组仅采用与观察组相同的常规康复训练治疗。于治疗前及治疗1个月、2个月后对患者膝关节能量、支撑力矩及摆动力矩进行测量比较。结果:治疗前,两组膝关节能量、支撑力矩及摆动力矩差异均无统计意义(P>0.05)。治疗1个月及2个月后,两组患者膝关节能量、支撑力矩及摆动力矩均明显改善,与本组治疗前有统计学差异(P<0.05);两组间亦有统计学差异(P<0.05)。结论:针刺配合康复训练可增加膝关节半月板损伤关节镜术后患者下肢运动过程中膝关节能量、支撑力矩与摆动力矩,提高其步行功能。%Objective: To observe the effect of acupuncture combined with rehabilitation training on walking function after arthroscopic meniscus repair. Methods:A total of 60 cases after arthroscopic meniscus repair were randomly allocated into an observation group and a control group, 30 in each group. Cases in the observation group received acupuncture combined with standard rehabilitation training, whereas cases in the control group only received the standard rehabilitation training. The energy, support torque and swing torque of the knee joints in the two groups were measured and compared before treatment, after 1-month and 2-month treatments. Results:Before treatment, there were no between-group significant differences in the differences of energy, support torque and swing torque of the knee joints (P>0.05). After 1-month and 2-month treatments, there were intra-group and inter-group statistical differences in these parameters (P Conclusion:Acupuncture combined with rehabilitation training can increase the energy, support torque and swing torque of the

  12. Ballistic resistance training in the power development for baseball pitchers%弹震式阻力训练在发展棒球投手爆发力上的应用

    Institute of Scientific and Technical Information of China (English)

    蒋燕

    2012-01-01

    通过对弹震式阻力训练的生理机制进行分析,发现棒球投手的投掷动作具备弹震式动作的特性.进而提出弹震式阻力训练是一种发展棒球投手爆发力及提升球速的优势训练方式.%An analysis is conducted of physiological mechanisms involved in the ballistic resistance training, it is pointed out that the pitch movement of a baseball pitcher has the characteristics of ballistic movement, and that ballistic resistance training is an ideal training targeted for developing baseball pitchers' power and speed.

  13. Low Oxygen Environment Training Effects on Muscle Power Parameters%低氧环境下的训练对肌肉爆发力参数的影响

    Institute of Scientific and Technical Information of China (English)

    丁林涛

    2015-01-01

    目的:分析低氧环境下的训练对肌肉爆发力参数的影响。方法:随机选取某市某高校志愿者30名,将其随机分为低氧运动组和常氧运动组,低氧训练组的15位受试者在模拟青海地区海拔环境下进行训练。常氧训练组受试者进行常氧测试。两组受试者均进行相同强度的训练,对最大摄氧量、低氧通气速率、肌肉收缩产生某个运动关节屈伸扭转力矩、对抗肌比、相对平均功率等指标进行测试。结果:低氧训练组受试者最大摄氧量显著低于常氧训练组(P<0.05),同时随着运动负荷的逐渐增加,最大摄氧量逐渐降低;两组受试者通气反应速率均随运动负荷的增大而显著增加。低氧训练组和常氧训练组相比,具有非常显著性差异(P<0.01)。两组膝关节屈伸肌快速相对峰值力矩实验后均有非常显著性提高;伸肌快速相对峰值力矩增长量低氧训练组非常显著性高于常氧训练组,P<0.01;屈肌组间相比,无显著性差异。结论:低氧环境下训练能够有效增强肌肉爆发力,对肌肉爆发力参数有积极的影响。%Objective: to analyse the low oxygen environment training effects on muscle power parameters. Methods: randomly selected 30 volunteers, a university city, and it were randomly divided into hypoxia exercise group and the aerobic exercise group, hypoxic training group of 15 subjects in a simulated altitude training environment in qinghai area. Often tested often oxygen oxygen training subjects. All of the same strength training, the two groups of vo2 Max, low oxygen aeration rate, muscle contraction produce a certain movement joint flexion torque, antagonist ratio, relative indexes of average power for testing. Results: the hypoxia training group were often have lower vo2max aerobic training group (P <0.05), with the gradual increase of sports load at the same time, the vo2max gradually reduce;Two groups of

  14. Power Extension Package (PEP) system definition extension, orbital service module systems analysis study. Volume 7: PEP logistics and training plan requirements

    Science.gov (United States)

    1979-01-01

    Recommendations for logistics activities and logistics planning are presented based on the assumption that a system prime contractor will perform logistics functions to support all program hardware and will implement a logistics system to include the planning and provision of products and services to assure cost effective coverage of the following: maintainability; maintenance; spares and supply support; fuels; pressurants and fluids; operations and maintenance documentation training; preservation, packaging and packing; transportation and handling; storage; and logistics management information reporting. The training courses, manpower, materials, and training aids required will be identified and implemented in a training program.

  15. 从安全风险管理中梳理供电培训需求的探讨%Carding the Training Needs of Power Supply from Safety Risk Management

    Institute of Scientific and Technical Information of China (English)

    苏健祥

    2011-01-01

    培训需求作为企业开展各种培训的重要依据,是企业人才培养目标的重要体现.长期以来员工的培训需求往往与基层班组的实际情况结合不足,不能引起基层员工的共鸣.员工虽然参加了很多培训,但更多的是被动接受,缺乏引导员工主动学习,也达不到电力企业的发展对人员素质不断提升的要求.本文重点探讨了佛山三水供电局从安全风险体系建设中根据关键风险预控措施反向推出员工的培训需要.%As an important basis for carrying out a variety of training in enterprises, the training need is an important manifestation of personnel training goals of enterprises. Staff training needs of employees do not adapt to the actual situation of grass-roots team for a long time, and can not arouse the employees. Although employees have participated in many training, most of them are passive acceptor. They are lack of initiative to encourage their employees to learn, but also can not reach the requirements of development of electric power enterprises to improving the quality of personnel. This article focuses on Foshan Sanshui Power Supply Bureau reverse its employees training needs from the security risks system, based on key the risk pre-control measures.

  16. To reform military logistics personnel training on the basis of logistics support power generating mode transformation%从保障力生成模式转变谈军事后勤人才培养创新

    Institute of Scientific and Technical Information of China (English)

    王勇; 马全洲

    2012-01-01

    Logistics support power generating mode transformation brings forward the higher demand for military logistics personnel training. This paper holds an eye on the traits and the rules of logistics support power generating mode transformation under the informationization background, puts forward the new concepts of establishing logistics talents training, broadens the new ways of logistics talents training, and perfects the mechanism of logistics talents training and using.%保障力生成模式的转变对军事后勤人才培养提出了更高要求。文中着眼信息化条件下后勤保障力生成模式转变的特点和规律,提出了确立军事后勤人才培养新理念,拓宽军事后勤人才培养途径,健全军事后勤人才培养使用机制等新观点。

  17. 动车电机检修工艺布局优化及信息化管理研究%A Research on Optimizationand Informatization Management of the Process Layout of Maintenanceand Repair for BulletTrain

    Institute of Scientific and Technical Information of China (English)

    蔡阳; 刘丹丹; 杨朋飞; 王长江; 胡林福; 雷金; 赵桂发

    2015-01-01

    This paper introducedthe compositepatternof themaintenance assemblylineof bullet train, from the perspec-tive of lean production,it integrated the concept of “a flow" andbalancedproducting line balancing , combined with modern information technology, it designed a new patten of process layout for the maintenanceof bullet train.%主要介绍了动车电机检修的流水线组成模式,从精益生产角度,综合运用“一个流”和生产线平衡理念,结合现代信息技术,设计一种动车电机检修工艺布局新模式。

  18. Near-term hybrid vehicle program, phase 1. Appendix B: Design trade-off studies. [various hybrid/electric power train configurations and electrical and mechanical drive-line components

    Science.gov (United States)

    1979-01-01

    The relative attractiveness of various hybrid/electric power train configurations and electrical and mechanical drive-line components was studied. The initial screening was concerned primarily with total vehicle weight and economic factors and identified the hybrid power train combinations which warranted detailed evaluation over various driving cycles. This was done using a second-by-second vehicle simulation program which permitted the calculations of fuel economy, electricity usage, and emissions as a function of distance traveled in urban and highway driving. Power train arrangement possibilities were examined in terms of their effect on vehicle handling, safety, serviceability, and passenger comfort. A dc electric drive system utilizing a separately excited motor with field control and battery switching was selected for the near term hybrid vehicle. Hybrid vehicle simulations showed that for the first 30 mi (the electric range of the vehicle) in urban driving, the fuel economy was 80 mpg using a gasoline engine and 100 mpg using a diesel engine. In urban driving the hybrid would save about 75% of the fuel used by the conventional vehicle and in combined urban/highway driving the fuel saving is about 50%.

  19. Getting More Out Of Nuclear Power

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    China’s first nuclear power plant generated 31 billion kw/h electricity from 1991 to 2007 Major repair work on the first phase of the Qinshan nuclear power plant,which began operation in 1991 as China’s first nuclear power plant,was completed on January 13,2008.The overhaul has improved the reliability and safety of the reactors and given the oper- ators experience for running,repairing

  20. Computer Technology for Expediency Consideration of Transformer Switching-Off for Capital Repair

    Directory of Open Access Journals (Sweden)

    E. M. Farkhadzade

    2011-01-01

    Full Text Available The paper considers computer technologies for expediency consideration of worn-out transformer recovery in power systems. Methods for list preparation of transformers to be selected for capital repair, estimation of repair quality, control over execution of contractual obligations are presented in the paper.

  1. 基于虚拟现实技术的电力技能实训体系研究%Research on Electric Power Skill Training System Based on Virtual Reality Technology

    Institute of Scientific and Technical Information of China (English)

    丁晓

    2016-01-01

    运用虚拟现实技术,结合大数据分析、移动互联网协同办公理念,对电力营销全专业技能实训考核体系的系统架构、关键技术、标准化电力模型构建的方法、动态可配置专业模型库的搭建等进行研究,在技术架构、系统功能、标准规范方面获得多项研究成果。在此基础上研发的营销全专业技能仿真培训系统陆续在营销用电检查专业技能竞赛、营销计量专业技能竞赛和营销电费抄收专业技能竞赛中得到了成功应用。该系统的建设和推广,对于电网企业创新人才培养机制,丰富专业技能培训手段,降低企业培训成本,提升专业队伍技能水平具有重要现实意义和借鉴作用。%Several research achievements are acquired including technical architecture,system functions and standards of simulation skill training system for power marketing discipline,by using virtual reality technology,integrating the concepts of big data analysis and mobile internet office,and researching on key techniques and system architecture of all-round power marketing professional skill training results assessment system,standardized power model establishment methods,construction of dynamic configurable discipline model library,large visual site scenario data switching methods and so on marketing professional skills simulation training system has been successfully applied in the marketing of electricity inspection professional skills competition,marketing,measurement skills,professional skills competitions and marketing skills to copy the professional skills competition. The construction and popularization of this system is of great practical significance and reference for the training mechanism of innovative talents in power grid company,enriching professional skills training,reducing the cost of training and upgrading the professional skills of professional teams.

  2. Trends of Training Courses Conducted in the Human Resources Development Center of the National Institute for Quantum and Radiological Science and Technology After the Fukushima Dai-Ichi Nuclear Power Plant Accident.

    Science.gov (United States)

    Shimizu, Yuko; Iida, Haruzo; Nenoi, Mitsuru

    2017-07-01

    Environmental contamination with radioactive materials caused by the Fukushima Dai-ichi Nuclear Power Plant (NPP) accident in 2011 raised a serious health concern among residents in Japan, and the demand for radiation experts who can handle the radiation-associated problems has increased. The Human Resources Development Center (HRDC) of the National Institute of for Quantum and Radiological Science and Technology in Japan has offered a variety of training programs covering a wide range of technologies associated with radiation since 1959. In this study, the time-course change in the number and age of the applicants for training programs regularly scheduled at HRDC were analyzed to characterize the demand after the NPP accident. The results suggested that the demand for the training of industrial radiation experts elevated sharply after the NPP accident followed by a prompt decrease, and that young people were likely stimulated to learn the basics of radiation. The demand for the training of medical radiation experts was kept high regardless of the NPP accident. The demand for the training of radiation emergency experts fluctuated apparently with three components: a terminating demand after the criticality accident that occurred in 1999, an urgent demand for handling of the NPP accident, and a sustained demand from local governments that undertook reinforcement of their nuclear disaster prevention program. The demand for the training of school students appeared to be increasing after the NPP accident. It could be foreseen that the demand for training programs targeting young people and medical radiation experts would be elevated in future.

  3. Laparoscopic Ventral Hernia Repair

    Science.gov (United States)

    ... surgical incision was made. In this area the abdominal muscles have weakened; this results in a bulge or ... alternatives, billing or insurance coverage, or your surgeons training and experience, do not hesitate to ask your ...

  4. Laparoscopic Repair of Morgagni Hernia

    Directory of Open Access Journals (Sweden)

    ilker murat arer

    2015-03-01

    Full Text Available Morgagni hernia is a congenital herniation of abdominal contents into the thoracic cavity through a retrosternal diaphragmatic defect and make up about 1 % - 5 % of all types of congenital diaphragmatic hernias. Surgical repair of Morgagni hernias is usually indicated when patients are symptomatic and have a high risk of strangulation or incarceration of the contained viscera. 71-year-old male patient admitted to emergency department with a 2-day history of abdominal pain, vomiting and obstipation. Laparoscopic repair for Morgagni hernia was performed. Laparoscopic repair for Morgagni hernia with mesh repair is secure, satisfactory and easily performed. [Cukurova Med J 2015; 40(Suppl 1: 71-74

  5. Sports Training

    Science.gov (United States)

    1988-01-01

    Practitioners of martial arts have long seen a need for a precise method of measuring the power of a karate kick or a boxer's punch in training and competition. Impax sensor is a piezoelectric film less than one thousandth of an inch thick, yet extremely durable. They give out a voltage impulse when struck, the greater the force of impact, the higher the voltage. The impulse is transmitted to a compact electronics package where voltage is translated into a force-pounds reading shown on a digital display. Impax, manufactured by Impulse Technology, Inc. is used by martial arts instructors, practitioners, U.S. Olympic Committee Training Center, football blocking sleds, and boxers as well as police defensive tactics, providing a means of evaluating the performance of recruits.

  6. Combinatorial Reliability and Repair

    Science.gov (United States)

    1992-07-01

    Press, Oxford, 1987. [2] G. Gordon and L. Traldi, Generalized activities and the Tutte polynomial , Discrete Math. 85 (1990), 167-176. [3] A. B. Huseby, A...particular, Satyanarayana and Tindell introduced a notion of (K,j)-domination in their study of a K-terminal version of the chromatic polynomial [6], and it...G)) graphs. He also intends to look into the properties of the polynomial that gives the expected number of needed repairs of a K-terminal network

  7. Mammalian mismatch repair

    DEFF Research Database (Denmark)

    Pena Diaz, Javier; Jiricny, Josef

    2012-01-01

    A considerable surge of interest in the mismatch repair (MMR) system has been brought about by the discovery of a link between Lynch syndrome, an inherited predisposition to cancer of the colon and other organs, and malfunction of this key DNA metabolic pathway. This review focuses on recent...... advances in our understanding of the molecular mechanisms of canonical MMR, which improves replication fidelity by removing misincorporated nucleotides from the nascent DNA strand. We also discuss the involvement of MMR proteins in two other processes: trinucleotide repeat expansion and antibody maturation...

  8. 提高供电企业内训师培训水平的措施探讨%To improve the level of power supply enterprise internal trainers training measures

    Institute of Scientific and Technical Information of China (English)

    任宇春; 任道玉

    2016-01-01

    随着我国电力企业的不断发展,需要具有高素质的人才投身于这项工作。然而现阶段我国电力企业内训师培训机制还不够完善。本文对我国供电企业内训师的现状进行了分析,并且就其存在的问题提出了一些改进建议。%With thecontinuous development of China's power enterprises,the need for high-quality personnel to join in this work.However,the internal trainer training mechanism of China's power enterprises at this stage is still not perfect.In this paper,the status quo of China power supply enterprises internal trainers are analyzed,and the existing problems put forward some suggestions for improvement.

  9. On the Construction and Management of Training Base Outside Campus of the Power Vocational Colleges%电力类高职院校校外实训基地建设与管理探析

    Institute of Scientific and Technical Information of China (English)

    陆燕

    2012-01-01

    校外实训是电力高职院校实践性教学的重要组成部分,加强实训基地的建设和管理是高职院校的办学特色和重要环节,同时也是高职院校提升教学质量、促进学生实践能力的重要手段。只有让学生走进实践中去,和技术岗位零距离接触,才能增强学生们的学习和操作能力。本文首先给出了电力高职院校校外实训基地的作用,接着分析了目前电力高职院校校外实训基地建设与管理存在的问题,最后结合实际对校外实训基地的建设管理提出了具体的建议。%Training outside campus is an important part of the practical teaching of power vocational colleges,and to strengthen the construction and management of the training base is the characteristics and an important part of teaching of vocational colleges,which is an important means to improve teaching quality and promote students′ practical ability.Only by allowing students to participate in practice personally,up close the technical positions,can make students improve their knowledge and ability to operate.Firstly,the article gives the role of training base outside campus of the power vocational colleges,and then analyzes the current problems in the construction and management of the training base outside campus;finally,puts forward the specific recommendations on the actual construction and management of the training base outside campus.

  10. High-Intensity Jump Training Is Tolerated during 60 Days of Bed Rest and Is Very Effective in Preserving Leg Power and Lean Body Mass: An Overview of the Cologne RSL Study

    Science.gov (United States)

    Kümmel, Jakob; Mulder, Edwin; Gollhofer, Albert; Frings-Meuthen, Petra; Gruber, Markus

    2017-01-01

    Purpose Space agencies are looking for effective and efficient countermeasures for the degrading effects of weightlessness on the human body. The aim of this study was to assess the effects of a novel jump exercise countermeasure during bed rest on vitals, body mass, body composition, and jump performance. Methods 23 male participants (29±6 years, 181±6 cm, 77±7 kg) were confined to a bed rest facility for 90 days: a 15-day ambulatory measurement phase, a 60-day six-degree head-down-tilt bed rest phase (HDT), and a 15-day ambulatory recovery phase. Participants were randomly allocated to the jump training group (JUMP, n = 12) or the control group (CTRL, n = 11). A typical training session consisted of 4x10 countermovement jumps and 2x10 hops in a sledge jump system. The training group had to complete 5–6 sessions per week. Results Peak force for the reactive hops (3.6±0.4 kN) as well as jump height (35±4 cm) and peak power (3.1±0.2 kW) for the countermovement jumps could be maintained over the 60 days of HDT. Lean body mass decreased in CTRL but not in JUMP (-1.6±1.9 kg and 0±1.0 kg, respectively, interaction effect p = 0.03). Resting heart rate during recovery was significantly increased for CTRL but not for JUMP (interaction effect p<0.001). Conclusion Participants tolerated the near-daily high-intensity jump training and maintained high peak forces and high power output during 60 days of bed rest. The countermeasure was effective in preserving lean body mass and partly preventing cardiac deconditioning with only several minutes of training per day. PMID:28081223

  11. DNA replication, repair, and repair tests. [Rat; human leukocytes

    Energy Technology Data Exchange (ETDEWEB)

    Lambert, B.

    1980-09-01

    The rate of inhibition and recovery of DNA synthesis can be used in a rapid assay system to detect genotoxic potentials of chemicals. Also, the observation that an agent stimulates DNA repair in a test system indicates its ability to cause damage in DNA. Different experimental approaches to the study of repair synthesis are discussed.

  12. MODALITIES OF TRAINING PARAMETER ALTERNATION IN NOWADAYS STRENGTH TRAINING PRACTICE

    Directory of Open Access Journals (Sweden)

    RANISAVLJEV IGOR

    2010-12-01

    Full Text Available Large number of variables could be alternated during the process of planning and programming in sports training. Superior training results in majority of sports are achieved by optimally manipulating training parameters in appropriate sequences and combinations. Additionally, in some sports they might be the result of appropriate periodization pattern. Today's tendency in strength training practice is training movements instead of training muscles. Exercise classification according to the dominant movement types, allows creating new modalities in training alternation. Additional variations in volume, intensity, rest brakes, repetition velocity andinter-repetition rest can be the important part of functional strength training program. Alternation and combination of different training parameters makes appropriate training stimulus for strength increase in the most of nowadays sports. Optimal alternation of basic training parameters should be the first part in the processof planning and programming. As a result, majority of athletes might not need advanced periodization patterns for optimal improvement in muscle strength and power

  13. Semi-Automated Diagnosis, Repair, and Rework of Spacecraft Electronics

    Science.gov (United States)

    Struk, Peter M.; Oeftering, Richard C.; Easton, John W.; Anderson, Eric E.

    2008-01-01

    capacity and skill demands from exceeding crew time and training limits, the CLEAR project is examining options provided by non-real time tele-operations, robotics, and a new generation of diagnostic equipment. This paper outlines a strategy to create an effective repair environment where, with the support of ground based engineers, crewmembers can diagnose, repair and test flight electronics in-situ. This paper also discusses the implications of successful tele-robotic repairs when expanded to rework and reconfiguration of used flight assets for building Constellation infrastructure elements.

  14. Biologics for tendon repair.

    Science.gov (United States)

    Docheva, Denitsa; Müller, Sebastian A; Majewski, Martin; Evans, Christopher H

    2015-04-01

    Tendon injuries are common and present a clinical challenge to orthopedic surgery mainly because these injuries often respond poorly to treatment and require prolonged rehabilitation. Therapeutic options used to repair ruptured tendons have consisted of suture, autografts, allografts, and synthetic prostheses. To date, none of these alternatives has provided a successful long-term solution, and often the restored tendons do not recover their complete strength and functionality. Unfortunately, our understanding of tendon biology lags far behind that of other musculoskeletal tissues, thus impeding the development of new treatment options for tendon conditions. Hence, in this review, after introducing the clinical significance of tendon diseases and the present understanding of tendon biology, we describe and critically assess the current strategies for enhancing tendon repair by biological means. These consist mainly of applying growth factors, stem cells, natural biomaterials and genes, alone or in combination, to the site of tendon damage. A deeper understanding of how tendon tissue and cells operate, combined with practical applications of modern molecular and cellular tools could provide the long awaited breakthrough in designing effective tendon-specific therapeutics and overall improvement of tendon disease management.

  15. Kvitebjoern gas pipeline repair - baptism of remote pipeline repair system

    Energy Technology Data Exchange (ETDEWEB)

    Gjertveit, Erling

    2010-07-01

    On the 1st of November 2007, severe anchor damage was discovered on the 30 inch Kvitebjoern gas export pipeline. The damage constituted a localised dent and a 17deg buckle, but no leakage. Statoil has invested in building an effective repair contingency structure for the large pipeline network on the Norwegian Continental shelf, with particular focus on the large gas export pipelines. The repair method for the Kvitebjoern pipeline was remotely operated using two Morgrip couplings and a spool. The installation used the purpose built Pipeline Repair System stored at Killingoey and couplings produced and tested back in 2005. This presentation will cover the initial damage investigations, the temporary operational phase, the repair preparations, the actual repair and lessons learned. (Author)

  16. Laser Engineered Net Shape (LENS) Technology for the Repair of Ni-Base Superalloy Turbine Components

    Science.gov (United States)

    Liu, Dejian; Lippold, John C.; Li, Jia; Rohklin, Stan R.; Vollbrecht, Justin; Grylls, Richard

    2014-09-01

    The capability of the laser engineered net shape (LENS) process was evaluated for the repair of casting defects and improperly machined holes in gas turbine engine components. Various repair geometries, including indentations, grooves, and through-holes, were used to simulate the actual repair of casting defects and holes in two materials: Alloy 718 and Waspaloy. The influence of LENS parameters, including laser energy density, laser scanning speed, and deposition pattern, on the repair of these defects and holes was studied. Laser surface remelting of the substrate prior to repair was used to remove machining defects and prevent heat-affected zone (HAZ) liquation cracking. Ultrasonic nondestructive evaluation techniques were used as a possible approach for detecting lack-of-fusion in repairs. Overall, Alloy 718 exhibited excellent repair weldability, with essentially no defects except for some minor porosity in repairs representative of deep through-holes and simulated large area casting defects. In contrast, cracking was initially observed during simulated repair of Waspaloy. Both solidification cracking and HAZ liquation cracking were observed in the repairs, especially under conditions of high heat input (high laser power and/or low scanning speed). For Waspaloy, the degree of cracking was significantly reduced and, in most cases, completely eliminated by the combination of low laser energy density and relatively high laser scanning speeds. It was found that through-hole repairs of Waspaloy made using a fine powder size exhibited excellent repair weldability and were crack-free relative to repairs using coarser powder. Simulated deep (7.4 mm) blind-hole repairs, representative of an actual Waspaloy combustor case, were successfully produced by the combination use of fine powder and relatively high laser scanning speeds.

  17. Simulation technology for training in the management of severe accidents in nuclear power; Tecnologia de simulacion para entrenamiento en gestion de accidentes severos en centrales nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Gil Moya, E.; Ruiz Martin, J. A.

    2012-07-01

    The objective of the project consists of the development of a module of severe accident based on the code Thermo-hydraulic MAAP and their integration in a Spanish CN training Simulator. Currently, stimulated the tools designed by Tecnatom aimed at training and assistance in the management of emergencies, complemented by the development of a dynamic interactive guides of severe accidents, thus constituting a set of aid for the operation.

  18. Language Training: English Training

    CERN Multimedia

    2004-01-01

    If you wish to participate in one of the following courses, please discuss with your supervisor and apply electronically directly from the course description pages that can be found on the Web at: http://www.cern.ch/Training/ or fill in an "application for training" form available from your Divisional Secretariat or from your DTO (Divisional Training Officer). Applications will be accepted in the order of their receipt. Language Training Françoise Benz tel. 73127 language.training@cern.ch General and Professional English Courses The next session will take place: from 1st March to 25 June 2004 (2 weeks break at Easter). These courses are open to all persons working on the Cern site, and to their spouses. For registration and further information on the courses, please consult our Web pages: http://cern.ch/Training or contact Mr. Liptow: tel. 72957.

  19. Language Training: English Training

    CERN Multimedia

    2004-01-01

    If you wish to participate in one of the following courses, please discuss with your supervisor and apply electronically directly from the course description pages that can be found on the Web at: http://www.cern.ch/Training/ or fill in an "application for training" form available from your Divisional Secretariat or from your DTO (Divisional Training Officer). Applications will be accepted in the order of their receipt. LANGUAGE TRAINING Françoise Benz tel. 73127 language.training@cern.ch General and Professional English Courses The next session will take place: from 1st March to 25 June 2004 (2 weeks break at Easter). These courses are open to all persons working on the Cern site, and to their spouses. For registration and further information on the courses, please consult our Web pages: http://cern.ch/Training or contact Mr. Liptow: tel. 72957.

  20. Laser repairing surface crack of Ni-based superalloy components

    Institute of Scientific and Technical Information of China (English)

    王忠柯; 叶和清; 许德胜; 黄索逸

    2001-01-01

    Surface crack of components of the cast nickel-base superalloy was repaired with twin laser beams under proper technological conditions. One laser beam was used to melt the substrate material of crack, and the other to fill in powder material to the crack region. The experimental results show that the surface crack with the width of 0.1~0.3mm could be repaired under the laser power of 3kW and the scanning speed of 6~8mm/s. The repaired deepness of crack region is below 6.5mm. The microstructure of repaired region is the cellular crystal, columnar crystal dendrite crystal from the transition region to the top filled layer. The phases in repaired region mainly consisted of supersaturated α-Co with plenty of Ni, some Cr and Al, Cr23C6, Co2B, Co-Ni-Mo, Ni4B3, TiSi and VSi. The hardness of filled layer in repaired region ranged from HV0.2450 to HV0.2500, and the hardness decreases gradually from the filled layer to joined zone.

  1. Handbook of adhesive bonded structural repair

    CERN Document Server

    Wegman, Raymond F

    1992-01-01

    Provides repair methods for adhesive bonded and composite structures; identifies suitable materials and equipment for repairs; describes damage evaluation criteria and techniques, and methods of inspection before and after repair.

  2. Longitudinal dynamics of motor vehicles. Traffic system motor vehicle, power demand and energy demand, power train. Book to the course of lectures 'Motor car engineering'. 14. ed.; Laengsdynamik von Kraftfahrzeugen. Verkehrssystem Kraftfahrzeug, Leistungs- und Energiebedarf, Antriebstrang, Fahrzeugdynamik. Vorlesungsumdruck Fahrzeugtechnik I

    Energy Technology Data Exchange (ETDEWEB)

    Wallentowitz, Henning; Gies, Stefan

    2008-07-01

    The author of the contribution under consideration reports on the longitudinal dynamics of motor vehicles. The longitudinal dynamics describe the procedures and components affecting the movement of a vehicle in its longitudinal direction. The introducing chapter describes the traffic system motor vehicle as well as the economic aspects of motor vehicles. The following chapters of this contribution are concerned to the following topics: (a) Power demand and energy demand with consideration of the wheel resistance, air resistance, upward gradient resistance and the acceleration resistance; (b) Power train; (c) Vehicle dynamics under consideration of the road performance, fuel consumption, propulsion principles and driving borders.

  3. 49 CFR 236.825 - System, automatic train control.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false System, automatic train control. 236.825 Section..., INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.825 System, automatic train control. A system so arranged that its operation will...

  4. The journey of DNA repair

    OpenAIRE

    Saini, Natalie

    2015-01-01

    21 years ago, the DNA Repair Enzyme was declared “Molecule of the Year”. Today, we are celebrating another “year of repair”, with the 2015 Nobel Prize in Chemistry being awarded to Aziz Sancar, Tomas Lindahl and Paul Modrich for their collective work on the different DNA repair pathways.

  5. Nucleotide excision repair in yeast

    NARCIS (Netherlands)

    Eijk, Patrick van

    2012-01-01

    Nucleotide Excision Repair (NER) is a conserved DNA repair pathway capable of removing a broad spectrum of DNA damage. In human cells a defect in NER leads to the disorder Xeroderma pigmentosum (XP). The yeast Saccharomyces cerevisiae is an excellent model organism to study the mechanism of NER. The

  6. Development of Long Shank Repair Tool for Defect of Pressure Vessel Bolt Hole in Pressure Vessel of Nuclear Power Plant%核电站压力容器螺孔长杆梳刀装置研制

    Institute of Scientific and Technical Information of China (English)

    黄新东; 黄辉; 洪龙; 李鑫

    2013-01-01

    In the reactor operation and operations with open lid,various defects may emerge on thread section of the main bolt hole pressure vessel.These defects must be dealt with before the closing of the lid.In view of the above conditions,this paper developed a pressure vessel screw rod cutter device,and expounds the long shank repair tool,a detailed description of the design scheme of the tool as well as the concrete structure.%在反应堆运行和开盖操作过程中,压力容器的主螺栓孔的螺纹段可能会产生各种缺陷,这些缺陷在再次扣盖前必须经过处理.针对上述工况,研制了一种压力容器螺孔长杆梳刀装置,本文阐述了该长杆梳刀装置的设计要求,详细描述该装置的设计方案以及具体结构形式.

  7. Rethinking transcription coupled DNA repair.

    Science.gov (United States)

    Kamarthapu, Venu; Nudler, Evgeny

    2015-04-01

    Nucleotide excision repair (NER) is an evolutionarily conserved, multistep process that can detect a wide variety of DNA lesions. Transcription coupled repair (TCR) is a subpathway of NER that repairs the transcribed DNA strand faster than the rest of the genome. RNA polymerase (RNAP) stalled at DNA lesions mediates the recruitment of NER enzymes to the damage site. In this review we focus on a newly identified bacterial TCR pathway in which the NER enzyme UvrD, in conjunction with NusA, plays a major role in initiating the repair process. We discuss the tradeoff between the new and conventional models of TCR, how and when each pathway operates to repair DNA damage, and the necessity of pervasive transcription in maintaining genome integrity. Copyright © 2015 Elsevier Ltd. All rights reserved.

  8. 49 CFR 236.516 - Power supply.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Power supply. 236.516 Section 236.516..., Train Control and Cab Signal Systems Standards § 236.516 Power supply. Automatic cab signal, train stop, or train control device hereafter installed shall operate from a separate or isolated power...

  9. Reward optimization of a repairable system

    Energy Technology Data Exchange (ETDEWEB)

    Castro, I.T. [Departamento de Matematicas, Facultad de Veterinaria, Universidad de Extremadura, Avenida de la Universidad, s/n. 10071 Caceres (Spain)]. E-mail: inmatorres@unex.es; Perez-Ocon, R. [Departamento de Estadistica e Investigacion Operativa, Facultad de Ciencias, Universidad de Granada, Avenida de Severo Ochoa, s/n. 18071 Granada (Spain)]. E-mail: rperezo@ugr.es

    2006-03-15

    This paper analyzes a system subject to repairable and non-repairable failures. Non-repairable failures lead to replacement of the system. Repairable failures, first lead to repair but they lead to replacement after a fixed number of repairs. Operating and repair times follow phase type distributions (PH-distributions) and the pattern of the operating times is modelled by a geometric process. In this context, the problem is to find the optimal number of repairs, which maximizes the long-run average reward per unit time. To this end, the optimal number is determined and it is obtained by efficient numerical procedures.

  10. Outcomes of robot-assisted versus laparoscopic repair of small-sized ventral hernias.

    Science.gov (United States)

    Chen, Y Julia; Huynh, Desmond; Nguyen, Scott; Chin, Edward; Divino, Celia; Zhang, Linda

    2017-03-01

    The aim of the study is to investigate the outcomes of the da Vinci robot-assisted laparoscopic hernia repair of small-sized ventral hernias with circumferential suturing of the mesh compared to the traditional laparoscopic repair with trans-fascial suturing. A retrospective review was conducted of all robot-assisted umbilical, epigastric and incisional hernia repairs performed at our institution between 2013 and 2015 compared to laparoscopic umbilical or epigastric hernia repairs. Patient characteristics, operative details and postoperative complications were collected and analyzed using univariate analysis. Three primary minimally invasive fellowship trained surgeons performed all of the procedures included in the analysis. 72 patients were identified during the study period. 39 patients underwent robot- assisted repair (21 umbilical, 14 epigastric, 4 incisional), and 33 patients laparoscopic repair (27 umbilical, 6 epigastric). Seven had recurrent hernias (robot: 4, laparoscopic: 3). There were no significant differences in preoperative characteristics between the two groups. Average operative time was 156 min for robot-assisted repair and 65 min for laparoscopic repair (p robot group [3.07 cm (1-9 cm)] than that for the laparoscopic group [2.02 cm (0.5-5 cm)] (p robot-assisted technique versus the standard laparoscopic repair.

  11. Recommendations for Enabling Manual Component Level Electronic Repair for Future Space Missions

    Science.gov (United States)

    Struk, Peter M.; Easton, John W.; Funk, Gregory P.; Latta, Gary S.; Ganster, Andrew W.; Estes, Brett E.

    2011-01-01

    Long duration missions to the Moon and Mars pose a number of challenges to mission designers, controllers, and the crews. Among these challenges are planning for corrective maintenance actions which often require a repair. Current repair strategies on the International Space Station (ISS) rely primarily on the use of Orbital Replacement Units (ORUs), where a faulty unit is replaced with a spare, and the faulty unit typically returns to Earth for analysis and possible repair. The strategy of replace to repair has posed challenges even for the ISS program. Repairing faulty hardware at lower levels such as the component level can help maintain system availability in situations where no spares exist and potentially reduce logistic resupply mass.This report provides recommendations to help enable manual replacement of electronics at the component-level for future manned space missions. The recommendations include hardware, tools, containment options, and crew training. The recommendations are based on the work of the Component Level Electronics Assembly Repair (CLEAR) task of the Exploration Technology Development Program from 2006 to 2009. The recommendations are derived based on the experience of two experiments conducted by the CLEAR team aboard the International Space Station as well as a group of experienced Miniature/Microminiature (2M) electronics repair technicians and instructors from the U.S. Navy 2M Project Office. The emphasis of the recommendations is the physical repair. Fault diagnostics and post-repair functional test are discussed in other CLEAR reports.

  12. Application of complex engineering solutions through advanced composite innovation (for repair of degraded buried pipe at Vandellos II Nuclear Power Plant); Reparacion de tuberias de un sistema de servicios no esenciales con recubrimiento interno de fibra de carbono

    Energy Technology Data Exchange (ETDEWEB)

    Bueno, J. M.; Raji, B. B.

    2011-07-01

    This technical presentation is focused on introducing an engineering solution approach and identification of sensitivity of applications of advanced carbon fiber in a pressurized wet environment: Engineering design, quality assurance of installation, inspection, and a comprehensive testing program to validate and bench mark the design data and compliance with code requirements in nuclear power plants.

  13. Wound repair in Pocillopora

    Science.gov (United States)

    Rodríguez-Villalobos, Jenny Carolina; Work, Thierry M.; Calderon-Aguileraa, Luis Eduardo

    2016-01-01

    Corals routinely lose tissue due to causes ranging from predation to disease. Tissue healing and regeneration are fundamental to the normal functioning of corals, yet we know little about this process. We described the microscopic morphology of wound repair in Pocillopora damicornis. Tissue was removed by airbrushing fragments from three healthy colonies, and these were monitored daily at the gross and microscopic level for 40 days. Grossly, corals healed by Day 30, but repigmentation was not evident at the end of the study (40 d). On histology, from Day 8 onwards, tissues at the lesion site were microscopically indistinguishable from adjacent normal tissues with evidence of zooxanthellae in gastrodermis. Inflammation was not evident. P. damicornis manifested a unique mode of regeneration involving projections of cell-covered mesoglea from the surface body wall that anastomosed to form gastrovascular canals.

  14. Groin hernia repair

    DEFF Research Database (Denmark)

    Kehlet, Henrik; Aasvang, Eske

    2005-01-01

    The choice of anesthesia for groin hernia repair is between general, regional (epidural or spinal), and local anesthesia. Existing data from large consecutive patient series and randomized studies have shown local anesthesia to be the method of choice because it can be performed by the surgeon......, does not necessarily require an attending anesthesiologist, translates into the shortest recovery (bypassing the postanesthesia care unit), has the lowest cost, and has the lowest postoperative morbidity regarding risk of urinary retention. Spinal anesthesia has no documented benefits for this small...... scientific data to support the choice of anesthesia, large epidemiologic and nationwide information from databases show an undesirable high (about 10-20%) use of spinal anesthesia and low (about 10%) use of local infiltration anesthesia. Surgeons and anesthesiologists should therefore adjust their anesthesia...

  15. Current status of laparoscopic inguinal hernia repair in Denmark

    DEFF Research Database (Denmark)

    Rosenberg, Jacob; Bay-Nielsen, M

    2008-01-01

    BACKGROUND: Laparoscopic inguinal hernia repair is becoming more common in many countries, but the quality of care, experience of the operating surgeon, and details of the surgical technique are not known in detail on a national level in Denmark. In a period of expanding surgical volume for lapar......BACKGROUND: Laparoscopic inguinal hernia repair is becoming more common in many countries, but the quality of care, experience of the operating surgeon, and details of the surgical technique are not known in detail on a national level in Denmark. In a period of expanding surgical volume...... for laparoscopic inguinal hernia repair, it is important to know the typical indications for surgery, re-operation rates, details of surgical technique, and status of surgical training on a national level in order to rationalize interventions to improve outcome. METHODS: Data from the National Hernia Database...... for the last 8 years regarding laparoscopic inguinal hernia repair were used in combination with questionnaire data obtained from all surgical units in Denmark. The questionnaire included issues such as the number of operating surgeons in the department, number of residents training in the laparoscopic...

  16. Applying Best Practices to Military Commercial-Derivative Aircraft Engine Sustainment: Assessment of Using Parts Manufacturer Approval (PMA) Parts and Designated Engineering Representative (DER) Repairs

    Science.gov (United States)

    2016-01-01

    use of alter- nate part and repair sourcing would have required gathering and ana - lyzing data in several steps, shown below. In practice, we were...Parts and Repairs 47 DER repair parts lists from private-sector companies. We then ana - lyzed DLA distribution center data for quantities of NIINs...PMA Parts and DER Repairs Kendall, Frank , Under Secretary of Defense, Acquisition, Technology, and Logistics, “Better Buying Power: Guidance for

  17. On the Educational Training of Production Line Workers in Power Enterprise%电力企业一线员工教育培训工作之我见

    Institute of Scientific and Technical Information of China (English)

    齐素华; 梁国玲

    2013-01-01

    随着社会科学技术的进步,企业之间的竞争逐渐转化为人才竞争。电力企业既是资金密集型企业,又是技术密集型企业,是关系国计民生的基础性产业。电力企业的发展离不开一支高素质的人才队伍,而培训作为人力资源开发的重要工具,在企业发展中的作用越来越重要。本文对电力企业生产一线员工教育培训工作的特点及存在的问题进行了介绍分析,提出了提升企业员工培训效果的途径,使之更好地服务于企业发展。%Along with the social development of science and technology, the competition between enterprises has gradually transferred into talent competition. Electric power enterprise is both capital intensive and technology intensive business and as a basic industry, it concerns the national economy and people's livelihood. The electric power enterprises can't develop without a high-quality talent team. So training, as the important tool of human resource development, is playing an increasingly important role in enterprises. This article introduces and analyzes the problems in the educational training of the production line workers of power enterprises, proposes approaches to improve the training effect so as to better serve the enterprise.

  18. How to repair an episiotomy.

    Science.gov (United States)

    Steen, Mary; Cummins, Bernie

    2016-02-17

    Rationale and key points Skilful repair of an episiotomy is an important aspect of maternal health care. It is essential that midwives and doctors have the knowledge and skills to undertake this procedure in a safe and effective manner. ▶ An episiotomy should be repaired promptly to reduce blood loss and prevent infection. ▶ Repair of an episiotomy is undertaken in three stages: repair of the vaginal mucosa, repair of the muscle layer and repair of the skin layer. ▶ Adequate pain relief should be provided before suturing. Reflective activity Clinical skills articles can help update your practice and ensure it remains evidence based. Apply this article to your practice. Reflect on and write a short account of: 1. Why a rectal examination is recommended before and following repair of an episiotomy. 2. What you would do to improve your suturing skills. 3. The factors that may prevent or delay an episiotomy from healing. Subscribers can upload their reflective accounts at rcni.com/portfolio .

  19. DNA repair in Chromobacterium violaceum.

    Science.gov (United States)

    Duarte, Fábio Teixeira; Carvalho, Fabíola Marques de; Bezerra e Silva, Uaska; Scortecci, Kátia Castanho; Blaha, Carlos Alfredo Galindo; Agnez-Lima, Lucymara Fassarella; Batistuzzo de Medeiros, Silvia Regina

    2004-03-31

    Chromobacterium violaceum is a Gram-negative beta-proteobacterium that inhabits a variety of ecosystems in tropical and subtropical regions, including the water and banks of the Negro River in the Brazilian Amazon. This bacterium has been the subject of extensive study over the last three decades, due to its biotechnological properties, including the characteristic violacein pigment, which has antimicrobial and anti-tumoral activities. C. violaceum promotes the solubilization of gold in a mercury-free process, and has been used in the synthesis of homopolyesters suitable for the production of biodegradable polymers. The complete genome sequence of this organism has been completed by the Brazilian National Genome Project Consortium. The aim of our group was to study the DNA repair genes in this organism, due to their importance in the maintenance of genomic integrity. We identified DNA repair genes involved in different pathways in C. violaceum through a similarity search against known sequences deposited in databases. The phylogenetic analyses were done using programs of the PHILYP package. This analysis revealed various metabolic pathways, including photoreactivation, base excision repair, nucleotide excision repair, mismatch repair, recombinational repair, and the SOS system. The similarity between the C. violaceum sequences and those of Neisserie miningitidis and Ralstonia solanacearum was greater than that between the C. violaceum and Escherichia coli sequences. The peculiarities found in the C. violaceum genome were the absence of LexA, some horizontal transfer events and a large number of repair genes involved with alkyl and oxidative DNA damage.

  20. Reliability Estimates for Power Supplies

    Energy Technology Data Exchange (ETDEWEB)

    Lee C. Cadwallader; Peter I. Petersen

    2005-09-01

    Failure rates for large power supplies at a fusion facility are critical knowledge needed to estimate availability of the facility or to set priorties for repairs and spare components. A study of the "failure to operate on demand" and "failure to continue to operate" failure rates has been performed for the large power supplies at DIII-D, which provide power to the magnet coils, the neutral beam injectors, the electron cyclotron heating systems, and the fast wave systems. When one of the power supplies fails to operate, the research program has to be either temporarily changed or halted. If one of the power supplies for the toroidal or ohmic heating coils fails, the operations have to be suspended or the research is continued at de-rated parameters until a repair is completed. If one of the power supplies used in the auxiliary plasma heating systems fails the research is often temporarily changed until a repair is completed. The power supplies are operated remotely and repairs are only performed when the power supplies are off line, so that failure of a power supply does not cause any risk to personnel. The DIII-D Trouble Report database was used to determine the number of power supply faults (over 1,700 reports), and tokamak annual operations data supplied the number of shots, operating times, and power supply usage for the DIII-D operating campaigns between mid-1987 and 2004. Where possible, these power supply failure rates from DIII-D will be compared to similar work that has been performed for the Joint European Torus equipment. These independent data sets support validation of the fusion-specific failure rate values.

  1. Laparoscopic total extraperitoneal repair under spinal anesthesia versus general anesthesia: a randomized prospective study

    OpenAIRE

    2016-01-01

    Turgut Donmez,1 Vuslat Muslu Erdem,2 Oguzhan Sunamak,3 Duygu Ayfer Erdem,2 Huseyin Imam Avaroglu1 1Department of General Surgery, 2Department of Anesthesiology and Reanimation, Lutfiye Nuri Burat State Hospital, 3Department of General Surgery, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey Background: Laparoscopic total extraperitoneal (TEP) inguinal hernia repair is a well-known approach to inguinal hernia repair that is usually performed under general anesthesia (GA). ...

  2. 40 CFR 798.5500 - Differential growth inhibition of repair proficient and repair deficient bacteria: “Bacterial DNA...

    Science.gov (United States)

    2010-07-01

    ... repair proficient and repair deficient bacteria: âBacterial DNA damage or repair tests.â 798.5500 Section... inhibition of repair proficient and repair deficient bacteria: “Bacterial DNA damage or repair tests.” (a... killing or growth inhibition of repair deficient bacteria in a set of repair proficient and deficient...

  3. Repairing and Upgrading Your PC

    CERN Document Server

    Thompson, Robert

    2009-01-01

    Repairing and Upgrading Your PC delivers start-to-finish instructions, simple enough for even the most inexperienced PC owner, for troubleshooting, repairing, and upgrading your computer. Written by hardware experts Robert Bruce Thompson and Barbara Fritchman Thompson, this book covers it all: how to troubleshoot a troublesome PC, how to identify which components make sense for an upgrade, and how to tear it all down and put it back together. This book shows how to repair and upgrade all of your PC's essential components.

  4. Laparoscopic repair of incisional hernia.

    Science.gov (United States)

    Lau, H; Lee, F; Patil, N G

    2001-09-01

    A 75-year-old man developed an incisional hernia over the upper abdomen following a wedge resection of a gastric stromal tumour in 1996. This is the first published report of a successful repair of an incisional hernia via a laparoscopic intraperitoneal on-lay technique using GORE-TEX DualMesh material in Hong Kong. Compared with conventional open repair of incisional hernia, long incisions and wound tension are avoided using the laparoscopic approach. This translates into a reduced risk of wound-related complications and facilitates recovery. In selected cases, minimally invasive surgery is a safe technique for the repair of incisional hernias.

  5. [Inguinal and femoral hernia repair].

    Science.gov (United States)

    Geissler, B; Anthuber, M

    2011-05-01

    With an incidence of 200,000 new cases per year in Germany, inguinal hernia has a significant socioeconomic impact. The 2009 guidelines from the European Hernia Society established treatment recommendations. Hernia repair is based on reinforcing the posterior wall of the inguinal canal by suture or mesh repair by an anterior or posterior approach. Lightweight mesh reduces recurrence rates and is the treatment of choice even in primary hernias. Laparoscopic hernia repair is associated with specific risks but is superior in postoperative pain and earlier return to work.

  6. IMPROVING THE RELIABILITY OF THE POWER CIRCUIT OF THE ELECTRIC TRAINS ЕР2Т AND ЕПЛ2Т

    Directory of Open Access Journals (Sweden)

    N. H. Visin

    2010-02-01

    Full Text Available The transitional processes in shunt circuit of traction engines, which armatures and excitation windings are connected in non-conducting direction as to the flowing power current, are considered in this paper. The changes in the control circuits of braking switch and in the shunt power circuit of traction engines with additional mounting a resistor of 0.5 Ohm are proposed. All this modernization will allow increasing greatly the operation reliability of power circuit of ЭР2Т and ЕПЛ2Т electric locomotives during their service life.

  7. 风能与动力工程本科专业人才培养与教学实验建设的探讨%The Discussion of Training and Construction of Laboratory for Bachelor Degree of Wind Power and Power Engineering

    Institute of Scientific and Technical Information of China (English)

    邢作霞; 井艳军; 王雅光

    2013-01-01

      随着风电产业的发展和对人才的迫切需求,风能与动力工程专业的本科教学方兴未艾,文章针对风电本科专业人才的培养,从人才需求和培养目标进行探讨,对课程设置和电气控制方面的实验规划进行系统分析,并提出建设性建议。%With the development of wind power industry, the professional engineers become more important. e start of undergraduate course of wind power and power engineering will determine the future of this module. With the purpose of requirements of student and the training methods, this report discusses and analyzes the planning of main course and the experiments of electric control.

  8. Large myelomeningocele repair

    Directory of Open Access Journals (Sweden)

    Farideh Nejat

    2011-01-01

    Full Text Available Background: Wound closure is accomplished in most cases of myelomeningocele (MMC by undermining of the skin edges surrounding the defect. However, large defects cannot be closed reliably by this simple technique. Due to the technical challenge associated with large MMC, surgeons have devised different methods for repairing large defects. In this paper, we report our experience of managing large defects, which we believe bears a direct relationship to decrease the incidence of wound complications. Materials and Methods: Forty children with large MMCs underwent surgical repair and represent our experience. We recommend using all hairy skin around the defect as a way to decrease the tension on the edges of the wound and the possible subsequent necrosis. It is our experience that vertical incision on one or two flanks parallel to the midline can decrease the tension of the wound. Moreover, ventriculo-peritoneal shunting for children who developed hydrocephalus was performed simultaneously, which constitutes another recommendation for preventing fluid collection and build up of pressure on the wound. Results: Patients in this study were in the age range of 2 days to 8 years. The most common location of MMC was in the thoracolumbar area. All but four patients had severe weakness in lower extremities. We used as much hairy skin around the MMC sac as possible in all cases. Vertical incisions on one or both flanks and simultaneous shunt procedure were performed in 36 patients. We treated children with large MMC defects with acceptable tension-free closure. Nonetheless, three patients developed superficial skin infection and partial wound dehiscence, and they were managed conservatively. Conclusions: We recommend using all hairy skin around the MMC defect for closure of large defects. In cases that were expected to be at a higher risk to develop dehiscence release incisions on one or two flanks towards the fascia were found to be useful. Simultaneous

  9. Pipeline repair in crossing river; Reparo de oleoduto em travessia de rio

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Walter Manoel [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The inspection and repair of buried pipelines in rivers crossings request the perfect study and use of techniques committed with the people's safety, environmental and pipelines integrity. The planning, elaboration and training in the constructive methods, analysis of technical alternatives and the logistics are preponderant factors. This paper describes step by step, since the risks and difficulties to find a pipe defect indicated in the report of intelligent pig, as well as the actions, experiences and techniques (project, pipeline location, excavation, underwater lowering, reinforcement metallic trench, water exhaustion, rock dismount and pipeline repair sleeves) that allowed repair a pipeline in river crossing. (author)

  10. Comparison of conservation and repair of library literature in Guangdong and Hong Kong,SAR

    Institute of Scientific and Technical Information of China (English)

    XIAO; Xiaomei

    2010-01-01

    By comparing hardware equipment,expenses,personnel structure,management systems,and personnel training of the literature conservation and repair in Guangdong and Hong Kong(HK),SAR,this paper analyzes the focus,technical basis and development direction of library work and discusses the similarities and differences in the conservation and repair of library literature in the two areas,so as to learn from each other,and promote the mutual development of the library literature conservation and repair in the two areas.

  11. Language Training: French Training

    CERN Multimedia

    Françoise Benz

    2004-01-01

    General and Professional French Courses The next session will take place from 11 October to 17 December 2004. These courses are open to all persons working on the CERN site, and to their spouses. For registration and further information on the courses, please consult our Web pages: http://cern.ch/Training or contact Mrs. Fontbonne: Tel. 72844. Writing Professional Documents in French This course is designed for people with a good level of spoken French. Duration: 30 hours Price: 660 CHF (for 8 students) For further information and registration, please consult our Web pages: http://cern.ch/Training or contact Mrs. Fontbonne: tel. 72844. FORMATION EN LANGUES LANGUAGE TRAINING Françoise Benz 73127 language.training@cern.ch

  12. Language Training: French Training

    CERN Document Server

    Françoise Benz

    2005-01-01

    General and Professional French Courses The next session will take place from 18 April to 30 June 2005. These courses are open to all persons working on the CERN site, and to their spouses. For registration and further information on the courses, please consult our Web pages: http://cern.ch/Training or contact Mrs. Benz : Tel. 73127. Writing Professional Documents in French The next session will take place from 18 April to 30 June 2005. This course is designed for people with a good level of spoken French. Duration: 30 hours Price: 660 CHF (for 8 students) For further information and registration, please consult our Web pages: http://cern.ch/Training or contact Mrs. Benz : Tel. 73127. FORMATION EN LANGUES LANGUAGE TRAINING Françoise Benz 73127 language.training@cern.ch

  13. A Two-Unit Cold Standby Repairable System with One Replaceable Repair Facility and Delay Repair:Some Reliability Problems

    Institute of Scientific and Technical Information of China (English)

    WEI Ying-yuan; TANG Ying-hui

    2004-01-01

    This paper considers a two-unit same cold standby repairable system with a replaceable repair facility and delay repair .The failure time of unit is assumed to follow exponential distribution , and the repair time and delay time of failed unit are assumed to follow arbitrary distributions , whereas the failure and replacement time distributions of the repair facility are exponential and arbitrary . By using the Markov renewal process theory, some primary reliability quantities of the system are obtained.

  14. 40 CFR 63.1024 - Leak repair.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 10 2010-07-01 2010-07-01 false Leak repair. 63.1024 Section 63.1024... Standards for Equipment Leaks-Control Level 2 Standards § 63.1024 Leak repair. (a) Leak repair schedule. The owner or operator shall repair each leak detected as soon as practical, but not later than 15...

  15. 40 CFR 65.105 - Leak repair.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 15 2010-07-01 2010-07-01 false Leak repair. 65.105 Section 65.105... FEDERAL AIR RULE Equipment Leaks § 65.105 Leak repair. (a) Leak repair schedule. The owner or operator shall repair each leak detected as soon as practical but not later than 15 calendar days after it...

  16. 40 CFR 63.1005 - Leak repair.

    Science.gov (United States)

    2010-07-01

    ... successful repair of the leak. (3) Maximum instrument reading measured by Method 21 of 40 CFR part 60... 40 Protection of Environment 10 2010-07-01 2010-07-01 false Leak repair. 63.1005 Section 63.1005... Standards for Equipment Leaks-Control Level 1 § 63.1005 Leak repair. (a) Leak repair schedule. The owner...

  17. DNA repair deficiency in neurodegeneration

    DEFF Research Database (Denmark)

    Jeppesen, Dennis Kjølhede; Bohr, Vilhelm A; Stevnsner, Tinna V.

    2011-01-01

    : homologous recombination and non-homologous end-joining. Ataxia telangiectasia and related disorders with defects in these pathways illustrate that such defects can lead to early childhood neurodegeneration. Aging is a risk factor for neurodegeneration and accumulation of oxidative mitochondrial DNA damage......Deficiency in repair of nuclear and mitochondrial DNA damage has been linked to several neurodegenerative disorders. Many recent experimental results indicate that the post-mitotic neurons are particularly prone to accumulation of unrepaired DNA lesions potentially leading to progressive...... neurodegeneration. Nucleotide excision repair is the cellular pathway responsible for removing helix-distorting DNA damage and deficiency in such repair is found in a number of diseases with neurodegenerative phenotypes, including Xeroderma Pigmentosum and Cockayne syndrome. The main pathway for repairing oxidative...

  18. Early days of DNA repair: discovery of nucleotide excision repair and homology-dependent recombinational repair.

    Science.gov (United States)

    Rupp, W Dean

    2013-12-13

    The discovery of nucleotide excision repair in 1964 showed that DNA could be repaired by a mechanism that removed the damaged section of a strand and replaced it accurately by using the remaining intact strand as the template. This result showed that DNA could be actively metabolized in a process that had no precedent. In 1968, experiments describing postreplication repair, a process dependent on homologous recombination, were reported. The authors of these papers were either at Yale University or had prior Yale connections. Here we recount some of the events leading to these discoveries and consider the impact on further research at Yale and elsewhere.

  19. Construction, repair and maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Hinger, R. [Terasen Pipelines, Calgary, AB (Canada); Wong, P. [KC Integrity Corp., Calgary, AB (Canada); Yeomans, M.; Glover, A. [TransCanada PipeLines Ltd., Calgary, AB (Canada)

    2003-07-01

    The presentations by Working Group 4 focused on construction, repair and maintenance of pipelines with particular reference to high-strength steels and their applications for natural gas transmission pipelines. Discussions focused on how technology can be used to provide cost-effective design and construction solutions for long distance pipelines in a manner that does not compromise safety and reliability. The role that carbon plays in increasing the toughness of steel was also discussed. A few fundamental changes in steel production technology and a reduction in carbon content can result in a simultaneous increase in strength and toughness of steels. The cost impact of this technology was summarized. It was concluded that high strength steels offer effective solutions to deliver cost-effective pipelines to transport natural gas from northern basins. This session also presented pipeline routes that transport diluted bitumens from the Athabasca Oil Sands Project and the Muskeg River Mine to upgrader facilities in Alberta. Construction issues included design conservatism, water course crossings, winter construction, winter ditching, and public consultation. Examples of high strength steel pipe applications were also included with reference to experience gained by TransCanada and Corridor Pipeline. tabs., figs.

  20. Language Training: French Training

    CERN Multimedia

    2004-01-01

    If you wish to participate in one of the following courses, please discuss with your supervisor and apply electronically directly from the course description pages that can be found on the Web at: http://www.cern.ch/Training/ or fill in an "application for training" form available from your Divisional Secretariat or from your DTO (Divisional Training Officer). Applications will be accepted in the order of their receipt. LANGUAGE TRAINING Françoise Benz tel. 73127 language.training@cern.ch General and Professional French Courses The next session will take place from 26 April to 02 July 2004. These courses are open to all persons working on the Cern site, and to their spouses. For registration and further information on the courses, please consult our Web pages: http://cern.ch/Training or contact Mrs. Benz: Tel. 73127. Writing Professional Documents in French The next session will take place from 26 April to 02 July 2004. This course is designed for people with a good level...

  1. Language Training: French Training

    CERN Document Server

    2004-01-01

    If you wish to participate in one of the following courses, please discuss with your supervisor and apply electronically directly from the course description pages that can be found on the Web at: http://www.cern.ch/Training/ or fill in an "application for training" form available from your Divisional Secretariat or from your DTO (Divisional Training Officer). Applications will be accepted in the order of their receipt. LANGUAGE TRAINING Françoise Benz tel. 73127 language.training@cern.ch General and Professional French Courses The next session will take place from 26 April to 02 July 2004. These courses are open to all persons working on the Cern site, and to their spouses. For registration and further information on the courses, please consult our Web pages: http://cern.ch/Training or contact Mrs. Benz: Tel. 73127. Writing Professional Documents in French The next session will take place from 26 April to 02 July 2004. This course is designed for people with a good level of s...

  2. Laparoscopic repair of postoperative perineal hernia.

    LENUS (Irish Health Repository)

    Ryan, Stephen

    2010-01-01

    Perineal hernias are infrequent complications following abdominoperineal operations. Various approaches have been described for repair of perineal hernias including open transabdominal, transperineal or combined abdominoperineal repairs. The use of laparoscopic transabdominal repair of perineal hernias is not well-described. We present a case report demonstrating the benefits of laparoscopic repair of perineal hernia following previous laparoscopic abdominoperineal resection (APR) using a nonabsorbable mesh to repair the defect. We have demonstrated that the use of laparoscopy with repair of the pelvic floor defect using a non absorbable synthetic mesh offers an excellent alternative with many potential advantages over open transabdominal and transperineal repairs.

  3. Umbilical and epigastric hernia repair.

    Science.gov (United States)

    Muschaweck, Ulrike

    2003-10-01

    The repair of umbilical and epigastric hernias still represents a challenge to surgeons. Although a common and relatively simple procedure, there is no exact protocol today on how the repair should be done. The Mayo technique and its alterations could not stand the test of time: a recurrence rate of 20% and higher is not acceptable for any surgical procedure. Although there is no consensus opinion, one thing is clear: the importance of an anatomic repair without tension and without an artificial enlargement of the defect. In 1987 Lichtenstein reported on 6321 cases of herniorraphy with a tension free repair, and in 1994 Stuart reemphasized that special importance in his editorial in the Lancet. A newer study from Brancato and coworkers in Italy also states the advantage of a tension-free prosthetic repair in 16 patients with epigastric hernia. We have gone even further and recommend a tailored-to-the-patient repair using a customized polypropylene mesh and a one-layer running suture. The advantages should be obvious: no artificial creation of an even bigger than original defect, a completely tension-free repair, and little to no recurrence of the hernia. Our results clearly prove that assumption. Moreover, the procedure is extremely safe and complications are very rare and minor. We conclude that using a mesh plug in a customized tension-free repair of umbilical and epigastric hernia shows many advantages over the commonly used methods. And we finally conclude with the words of Albert Einstein: "The only source of knowledge is experience."

  4. Repair Types, Procedures - Part 1

    Science.gov (United States)

    2010-05-01

    New Jersey, USA. Repair Types, Procedures – Part I RTO-EN-AVT-156 9 - 19 [5] Drieker R, Botello C, MacBeth S, and Grody J, “Aircraft Battle... MacBeth S, and Grody J, “Aircraft Battle Damage Assessment and Repair (ABDAR), Vol. III: Field Test Report,” AFRL-HE-WP-TR-2002-0039, July 2000. [8

  5. Hand function after nerve repair.

    OpenAIRE

    Lundborg, Göran; Rosén, Birgitta

    2007-01-01

    Treatment of injuries to major nerve trunks in the hand and upper extremity remains a major and challenging reconstructive problem. Such injuries may cause long-lasting disabilities in terms of lost fine sensory and motor functions. Nowadays there is no surgical repair technique that can ensure recovery of tactile discrimination in the hand of an adult patient following nerve repair while very young individuals usually regain a complete recovery of functional sensibility. Post-traumatic nerve...

  6. Cobbler's technique for Iridodialysis repair

    Directory of Open Access Journals (Sweden)

    Surinder Singh Pandav

    2016-01-01

    Full Text Available We describe a novel “Cobbler's technique” for iridodialysis repair in the right eye of a patient aged 18 years, with a traumatic iridodialysis secondary to open globe injury with an iron rod. Our technique is simple with easy surgical maneuvers, that is, effective for repairing iridodialysis. The “Cobbler's technique” allows a maximally functional and cosmetic result for iridodialysis.

  7. Rehabilitation after Rotator Cuff Repair.

    Science.gov (United States)

    Nikolaidou, Ourania; Migkou, Stefania; Karampalis, Christos

    2017-01-01

    Rotator cuff tears are a very common condition that is often incapacitating. Whether non-surgical or surgical, successful management of rotator cuff disease is dependent on appropriate rehabilitation. If conservative management is insufficient, surgical repair is often indicated. Postsurgical outcomes for patients having had rotator cuff repair can be quite good. A successful outcome is much dependent on surgical technique as it is on rehabilitation. Numerous rehabilitation protocols for the management of rotator cuff disease are based primarily on clinical experience and expert opinion. This article describes the different rehabilitation protocols that aim to protect the repair in the immediate postoperative period, minimize postoperative stiffness and muscle atrophy. A review of currently available literature on rehabilitation after arthroscopic rotator cuff tear repair was performed to illustrate the available evidence behind various postoperative treatment modalities. There were no statistically significant differences between a conservative and an accelerated rehabilitation protocol . Early passive range of motion (ROM) following arthroscopic cuff repair is thought to decrease postoperative stiffness and improve functionality. However, early aggressive rehabilitation may compromise repair integrity. The currently available literature did not identify any significant differences in functional outcomes and relative risks of re-tears between delayed and early motion in patients undergoing arthroscopic rotator cuff repairs. A gentle rehabilitation protocol with limits in range of motion and exercise times after arthroscopic rotator cuff repair would be better for tendon healing without taking any substantial risks. A close communication between the surgeon, the patient and the physical therapy team is important and should continue throughout the whole recovery process.

  8. Repairing Learned Knowledge Using Experience

    Science.gov (United States)

    1990-05-01

    It necessar and Identify by’ 6109h nii be) learning precedent-based learning knowledge repair explanation-based learning near - miss groups 20. ABSTRACT...can a program use explanations to repair a recollection, preventing further misapplication? Near - Miss Groups Isolate Suspicious Relations If a metal...pail differs from a porcelain cup only in the position of handle attachment, then we would say that the pail is a near miss . Unfortunately, there are

  9. Aircraft Metal Skin Repair and Honeycomb Structure Repair; Sheet Metal Work 3: 9857.02.

    Science.gov (United States)

    Dade County Public Schools, Miami, FL.

    The course helps students determine types of repairs, compute repair sizes, and complete the repair through surface protection. Course content includes goals, specific objectives, protection of metals, repairs to metal skin, and honeycomb structure repair. A bibliography and post-test are appended. A prerequisite for this course is mastery of the…

  10. SIMPRO, a practical tool for training the staff of Laguna Verde nuclear power plant; El SIMPRO, una herramienta practica para la capacitacion y entrenamiento del personal de la CNLV

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez Valdez, Guillermo Omar; Gomez Camargo, Octavio; Castelo Cuevas, Luis; Vazquez Bustos, Jesus [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2012-06-22

    Laguna Verde Nuclear Power Plant (LVNPP) has implemented a real physical model, which represents several parts of a simplified version of its process. This development has proved to be very useful to improve the compliance with training programs and staff training maintenance in the different disciplines of engineering. Such programs are required by regulations and standards applicable for Nuclear Power Plants (NPP), so that the personnel working in these facilities can be able to respond on time to any contingency that might arise. This paper outlines the creation of the real physical model, how it is integrated and some of the practices that can be performed on this model. [Spanish] La Central Nucleoelectrica de Laguna Verde ha implementado un modelo fisico real que representa varias partes de una version simplificada de su proceso. Este desarrollo ha demostrado ser muy util para mejorar el cumplimiento de programas de adiestramiento, incluidos los del personal de mantenimiento, en diferentes disciplinas de ingenieria. Dichos programas son requeridos por las regulaciones y normas aplicables a las centrales nucleoelectricas, de manera que el personal que trabaja en estas instalaciones pueda ser capaz de responder oportunamente a cualquier contingencia que pudiera surgir. Este articulo describe la creacion del modelo fisico real, como se integra y algunas de las practicas que pueden llevarse a cabo con el.

  11. Training simulators for power plant operation based in multimedia, intelligent tutorials and virtual reality; Simuladores para entrenamiento en la operacion de centrales basados en multimedia, tutores inteligentes y realidad virtual

    Energy Technology Data Exchange (ETDEWEB)

    Rossano Roman, Miguel; Tavira Mondragon, Jose A.; Romero Jimenez, Guillermo; Buenabad Arias, Maria de los Angeles [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    The possibility of utilizing simulators to support the fossil fuel power plants operation personnel training, is analyzed. These simulators can be based in multimedia, intelligent tutorials and virtual reality. The software and hardware advances of these technologies are analyzed and it is concluded that the simulators development for operators training supported in the fore mentioned technologies represents a new alternative for the instruction of personnel of this type of power stations that has to be analyzed and evaluated, since one of the disadvantages of this type of technologies is the equipment and software investment cost [Espanol] Se analiza la posibilidad de utilizar simuladores para ayudar al entrenamiento del personal en la operacion de centrales termoelectricas, dichos simuladores pueden estar basados en multimedia, tutores inteligentes y realidad virtual. Se describen los avances en software y hardware de estas tecnologias y se concluye en que el desarrollo de simuladores para el entrenamiento de operadores apoyados con las tecnologias antes mencionadas representa una nueva alternativa para la instruccion del personal de este tipo de centrales, que hay que analizar y evaluar, ya que una de las desventajas de este tipo de tecnologias es el costo de inversion en equipo y software

  12. 基于NSGA-Ⅱ遗传算法的汽车动力传动系统优化模拟研究%Simulation Study of the Optimization of Vehicle Power Train Based on NSGA-ⅡGenetic Algorithm

    Institute of Scientific and Technical Information of China (English)

    刘旭东

    2015-01-01

    In order to improve the performance of automobiles,mainly according to the actual vehicle parame-ters,the paper fits the curve equation of the torque characteristic curve and the surface equation of the characteris-tic curve of fuel.The paper introduces the use of NSGA-Ⅱgenetic algorithm for the best match of automotive power train parameters.Moreover,the data of the optimization experiment shows that the NSGA- II genetic algo-rithm is feasible for the optimization of the parameters of the vehicle power train system.Finally,the paper ana-lyzes the optimized results.%为了提高汽车性能,本文根据实际车型参数拟合出汽车扭矩特性曲线方程和燃油特性曲面方程,并通过NSGA-Ⅱ遗传算法对汽车动力传动系统参数进行优化匹配.此外还进行实车实验,结果证明,NSGA-Ⅱ遗传算法对于车辆动力传动系参数优化问题的解决是切实可行的,最后对优化结果进行分析.

  13. ``I Have Been Given the Power to Teach. The Children Understand Me Very Well.'' The Social and Academic Impact of Deaf Teacher Training in Kenya

    Science.gov (United States)

    Johnstone, Christopher; Corce, Heidi

    2010-02-01

    Kenya has 41 Deaf schools that serve children from Class 1 through secondary school. These schools are all characterised by the fact that they have very few teachers who are fluent in Kenyan sign language. In order to meet the needs of schools and to provide employment opportunities for Deaf Kenyan adults, a small non-governmental organisation identified Deaf secondary school students for training. They received two years of teacher training free of charge. Most have since been awarded teaching contracts by the Kenyan Teacher Service Commission or local school boards. This article reports on results from a preliminary study of the social and academic impacts of this innovation. Results indicate that Deaf teachers are inspirational in the classroom, represent a significant resource for their school communities and are preferred by Deaf students. A follow-up study on the relative learning gains of Deaf students when taught by Deaf teachers is planned once relevant data are available.

  14. Base excision repair in sugarcane

    Directory of Open Access Journals (Sweden)

    Agnez-Lima Lucymara F.

    2001-01-01

    Full Text Available DNA damage can be induced by a large number of physical and chemical agents from the environment as well as compounds produced by cellular metabolism. This type of damage can interfere with cellular processes such as replication and transcription, resulting in cell death and/or mutations. The low frequency of mutagenesis in cells is due to the presence of enzymatic pathways which repair damaged DNA. Several DNA repair genes (mainly from bacteria, yeasts and mammals have been cloned and their products characterized. The high conservation, especially in eukaryotes, of the majority of genes related to DNA repair argues for their importance in the maintenance of life on earth. In plants, our understanding of DNA repair pathways is still very poor, the first plant repair genes having only been cloned in 1997 and the mechanisms of their products have not yet been characterized. The objective of our data mining work was to identify genes related to the base excision repair (BER pathway, which are present in the database of the Sugarcane Expressed Sequence Tag (SUCEST Project. This search was performed by tblastn program. We identified sugarcane clusters homologous to the majority of BER proteins used in the analysis and a high degree of conservation was observed. The best results were obtained with BER proteins from Arabidopsis thaliana. For some sugarcane BER genes, the presence of more than one form of mRNA is possible, as shown by the occurrence of more than one homologous EST cluster.

  15. Scarf Repair of Composite Laminates

    Directory of Open Access Journals (Sweden)

    Xie Zonghong

    2016-01-01

    Full Text Available The use of composite materials, such as carbon-fiber reinforced plastic (CFRP composites, aero-structures has led to an increased need of advanced assembly joining and repair technologies. Adhesive bonded repairs as an alternative to recover full or part of initial strength were investigated. Tests were conducted with the objective of evaluating the effectiveness of techniques used for repairing damage fiber reinforced laminated composites. Failure loads and failure modes were generated and compared with the following parameters: scarf angles, roughness of grind tool and number of external plies. Results showed that scarf angle was the critical parameter and the largest tensile strength was observed with the smallest scarf angle. Besides, the use of external plies at the outer surface could not increase the repairs efficiency for large scarf angle. Preparing the repair surfaces by sanding them with a sander ranging from 60 to 100 grit number had significant effect on the failure load. These results allowed the proposal of design principles for repairing CFRP structures.

  16. COMPARISON OF CONCENTRIC AND ECCENTRIC HAMSTRING STRENGTH TRAINING IN IMPROVING MUSCLE STRENGTH AND POWER AMONG FUTSAL PLAYERS A RANDOMIZED CONTROLLED TRIAL

    OpenAIRE

    Arunkumar Nedunchezhiyan; Syed Abudaheer Kajamohideen; Ilayaraja AlagiaThiruvevenkadam; Karthikeyan Rajendran; Lorrian Shin Chee Lim; Anithabhavani Nedunchezhiyan

    2016-01-01

    Background: Hamstring injury is a common problem in many sports, especially those involving acceleration and maximal sprints. Hamstring strains are both common and painful. During sprinting the hip flexor and knee extensor torques are frequently produced and is opposed by the hamstring muscles, hence there are numerous studies done on the muscle strength training to prevent the hamstring strain injury as it is statistically stated as the highest rate involved injury in the contact sport. This...

  17. Regulation of tissue repair and regeneration by electric fields

    Institute of Scientific and Technical Information of China (English)

    WANG En-tong; ZHAO Min

    2010-01-01

    Endogenous electric fields(Efs)have been detected at wounds and damaged tissues.The potential roles of Efs in tissue repair and regeneration have been an intriguing topic for centuries.Recent researches have provided significant insights into how naturally occurring Efs may participate in the control of tissue repair and regeneration.Applied Efs equivalent to the size of fields measured in vivo direct cell migration,cell proliferation and nerve sprouting at wounds.More remarkably,physiological Efs are a guidance cue that directs cell migration which overrides other well accepted directional signals including initial injury stimulation,wound void,contact inhibition release,population pressure and chemotaxis.Efs activate many intracellular signaling pathways in a directional manner.Modulation of endogenous wound Efs affects epithelial cell migration,cell proliferation,and nerve growth at cornea wounds in vivo.Electric stimulation is being tested clinically for the treatments of bone fracture,wound healing and spinal cord injury.Efs thus may represent a novel type of signaling paradigm in tissue repair and regeneration.Combination of the electric stimulation and other well understood biochemical regulatory mechanisms may offer powerful and effective therapies for tissue repair and regeneration.This review introduces experimental evidence for the existence of endogenous Efs and discusses their roles in tissue repair and regeneration.

  18. Regulation of tissue repair and regeneration by electric fields.

    Science.gov (United States)

    Wang, En-tong; Zhao, Min

    2010-02-01

    Endogenous electric fields (EFs) have been detected at wounds and damaged tissues. The potential roles of EFs in tissue repair and regeneration have been an intriguing topic for centuries. Recent researches have provided significant insights into how naturally occurring EFs may participate in the control of tissue repair and regeneration. Applied EFs equivalent to the size of fields measured in vivo direct cell migration, cell proliferation and nerve sprouting at wounds. More remarkably, physiological EFs are a guidance cue that directs cell migration which overrides other well accepted directional signals including initial injury stimulation, wound void, contact inhibition release, population pressure and chemotaxis. EFs activate many intracellular signaling pathways in a directional manner. Modulation of endogenous wound EFs affects epithelial cell migration, cell proliferation, and nerve growth at cornea wounds in vivo. Electric stimulation is being tested clinically for the treatments of bone fracture, wound healing and spinal cord injury. EFs thus may represent a novel type of signaling paradigm in tissue repair and regeneration. Combination of the electric stimulation and other well understood biochemical regulatory mechanisms may offer powerful and effective therapies for tissue repair and regeneration. This review introduces experimental evidence for the existence of endogenous EFs and discusses their roles in tissue repair and regeneration.

  19. Aging and DNA repair capability. [Review

    Energy Technology Data Exchange (ETDEWEB)

    Tice, R R

    1977-01-01

    A review of the literature on DNA repair processes in relation to aging is presented under the following headings: DNA repair processes; age-related occurrence of unrepaired DNA lesions; DNA repair capability as a function of age; tissue-specific DNA repair capability; acceleration of the aging process by exposure to DNA damaging agents; human genetic syndromes; and longevity and DNA repair processes. (HLW)

  20. Numerical Simulation of Reliability of Nuclear Power Plant Repairable System with Multi-failure Behavior%考虑多失效行为的核电厂可修系统可靠性数值仿真

    Institute of Scientific and Technical Information of China (English)

    戈道川; 杨燕华; 张若兴; 丑强

    2015-01-01

    To analyze the reliability of safety system having multi‐failure behavior ,such as sequence‐,redundancy‐ and function‐dependent failure behaviors ,in nuclear power plant ,a dynamic fault tree model based on numerical simulation approach was proposed in this paper .It is implemented to analyze the reliability of safety system having multi‐failure behavior in nuclear power reactor through randomly simulating the multi‐failure behavior of component and judging the success rule of dynamic logic gate .T he results of the case study indicate the proposed method is applicable for evaluating the reliability of complicated system with multi‐failure behavior ,and offers great generality .%为分析含有顺序、冗余及功能相关等多失效行为的核电厂安全系统的可靠性,提出了基于动态故障树模型的可靠性数值仿真方法。通过对部件多失效行为的随机模拟及动态逻辑门成功准则的判定,实现了对含有多失效行为的核电厂安全系统的可靠性数值模拟。案例分析结果表明,该方法能对多失效行为的复杂系统进行可靠性分析,具有较强的适应性。