WorldWideScience

Sample records for subject headings detailed

  1. Big Heads, Small Details and Autism

    Science.gov (United States)

    White, Sarah; O'Reilly, Helen; Frith, Uta

    2009-01-01

    Autism is thought to be associated with a bias towards detail-focussed processing. While the cognitive basis remains controversial, one strong hypothesis is that there are high processing costs associated with changing from local into global processing. A possible neural mechanism underlying this processing style is abnormal neural connectivity;…

  2. CINAHL list of subject headings: a nursing thesaurus revised.

    Science.gov (United States)

    Fishel, C C; Graham, K E; Greer, D M; Gupta, A D; Lockwood, D K; Prime, E E

    1985-04-01

    The rationale and methods for revising the thesaurus of one of the major health sciences indexing tools are discussed. Computer production of the Cumulative Index to Nursing & Allied Health Literature and the possibility of online access mandated a revision of the list of subject headings. CINAHL has maintained a policy of responding to user needs and to changes in the nursing and allied health literature, and user input was encouraged during revision of the thesaurus. The methods of structural revision are described, and major changes in the thesaurus are detailed. Modification of the thesaurus is expected to have a far-reaching impact on the retrieval of information in nursing and allied health. Nursing and Allied Health (CINAHL) is now available online through DIALOG (file 218) and BRS (access code NAHL).

  3. Using Topic Models to Interpret MEDLINE's Medical Subject Headings

    Science.gov (United States)

    Newman, David; Karimi, Sarvnaz; Cavedon, Lawrence

    We consider the task of interpreting and understanding a taxonomy of classification terms applied to documents in a collection. In particular, we show how unsupervised topic models are useful for interpreting and understanding MeSH, the Medical Subject Headings applied to articles in MEDLINE. We introduce the resampled author model, which captures some of the advantages of both the topic model and the author-topic model. We demonstrate how topic models complement and add to the information conveyed in a traditional listing and description of a subject heading hierarchy.

  4. METHODICAL ENSURING ELECTRONIC SUBJECT ANALYSIS OF DOCUMENTS: FEATURES OF EDITING SUBJECT HEADINGS IN ABIS ABSOTHEQUE UNICODE

    Directory of Open Access Journals (Sweden)

    Т. М. Бикова

    2016-03-01

    Full Text Available The purpose of our article is consideration of questions of electronic subject analysis of documents and methodical ensuring editing subject headings in the electronic catalog. The main objective of our article – to show a technique of editing the dictionary of subject headings, to study and apply this technique in work of libraries of higher education institutions. Object of research is the thesaurus of subject headings of the electronic catalog of the Scientific Library of Odessa I. I. Mechnikov National University. To improve the efficiency and quality of the search capabilities of the electronic catalog needs constant work on its optimization, that is, technical editing of subject headings, the opening of new subject headings and subheadings.  In Scientific library the instruction, which regulates a technique of edition of subject headings, was developed and put into practice and establishes rationing of this process. The main finding of the work should be to improve the level of bibliographic service users and rationalization systematizer. The research findings have the practical value for employees of libraries.

  5. User's guide to Sears List of subject headings

    CERN Document Server

    Satija, Mohinder P

    2008-01-01

    This book is a companion to the 19th edition of the Sears List and a complete course in the theory and practice of the List for practitioners, teachers, and learners. The object of this small, practical introduction is to be simple, clear, and illustrative, assuming the reader has little prior knowledge either of the Sears List or of subject headings work in general.

  6. Levels of detail analysis of microwave scattering from human head models for brain stroke detection

    Directory of Open Access Journals (Sweden)

    Awais Munawar Qureshi

    2017-11-01

    Full Text Available In this paper, we have presented a microwave scattering analysis from multiple human head models. This study incorporates different levels of detail in the human head models and its effect on microwave scattering phenomenon. Two levels of detail are taken into account; (i Simplified ellipse shaped head model (ii Anatomically realistic head model, implemented using 2-D geometry. In addition, heterogenic and frequency-dispersive behavior of the brain tissues has also been incorporated in our head models. It is identified during this study that the microwave scattering phenomenon changes significantly once the complexity of head model is increased by incorporating more details using magnetic resonance imaging database. It is also found out that the microwave scattering results match in both types of head model (i.e., geometrically simple and anatomically realistic, once the measurements are made in the structurally simplified regions. However, the results diverge considerably in the complex areas of brain due to the arbitrary shape interface of tissue layers in the anatomically realistic head model. After incorporating various levels of detail, the solution of subject microwave scattering problem and the measurement of transmitted and backscattered signals were obtained using finite element method. Mesh convergence analysis was also performed to achieve error free results with a minimum number of mesh elements and a lesser degree of freedom in the fast computational time. The results were promising and the E-Field values converged for both simple and complex geometrical models. However, the E-Field difference between both types of head model at the same reference point differentiated a lot in terms of magnitude. At complex location, a high difference value of 0.04236 V/m was measured compared to the simple location, where it turned out to be 0.00197 V/m. This study also contributes to provide a comparison analysis between the direct and iterative

  7. Developing a biomedical expert finding system using medical subject headings.

    Science.gov (United States)

    Singh, Harpreet; Singh, Reema; Malhotra, Arjun; Kaur, Manjit

    2013-12-01

    Efficient identification of subject experts or expert communities is vital for the growth of any organization. Most of the available expert finding systems are based on self-nomination, which can be biased, and are unable to rank experts. Thus, the objective of this work was to develop a robust and unbiased expert finding system which can quantitatively measure expertise. Medical Subject Headings (MeSH) is a controlled vocabulary developed by the National Library of Medicine (NLM) for indexing research publications, articles and books. Using the MeSH terms associated with peer-reviewed articles published from India and indexed in PubMed, we developed a Web-based program which can be used to identify subject experts and subjects associated with an expert. We have extensively tested our system to identify experts from India in various subjects. The system provides a ranked list of experts where known experts rank at the top of the list. The system is general; since it uses information available with the PubMed, it can be implemented for any country. The expert finding system is able to successfully identify subject experts in India. Our system is unique because it allows the quantification of subject expertise, thus enabling the ranking of experts. Our system is based on peer-reviewed information. Use of MeSH terms as subjects has standardized the subject terminology. The system matches requirements of an ideal expert finding system.

  8. Subject Headings for Church or Synagogue Libraries. 2nd Revised Edition. CSLA Guide No. 8.

    Science.gov (United States)

    Kersten, Dorothy B.

    This guide to subject headings for church or synagogue libraries begins by providing guidelines for the subject cataloging process. These guidelines are presented under seven headings: (1) Selecting the Subject Heading (by names of persons, religious congregations and orders, sects and denominations, places, holidays, and new subjects); (2)…

  9. Accuracy of medical subject heading indexing of dental survival analyses.

    Science.gov (United States)

    Layton, Danielle M; Clarke, Michael

    2014-01-01

    To assess the Medical Subject Headings (MeSH) indexing of articles that employed time-to-event analyses to report outcomes of dental treatment in patients. Articles published in 2008 in 50 dental journals with the highest impact factors were hand searched to identify articles reporting dental treatment outcomes over time in human subjects with time-to-event statistics (included, n = 95), without time-to-event statistics (active controls, n = 91), and all other articles (passive controls, n = 6,769). The search was systematic (kappa 0.92 for screening, 0.86 for eligibility). Outcome-, statistic- and time-related MeSH were identified, and differences in allocation between groups were analyzed with chi-square and Fischer exact statistics. The most frequently allocated MeSH for included and active control articles were "dental restoration failure" (77% and 52%, respectively) and "treatment outcome" (54% and 48%, respectively). Outcome MeSH was similar between these groups (86% and 77%, respectively) and significantly greater than passive controls (10%, P indexed as such. Significantly more time-related MeSH were allocated to the included than the active controls (92% and 79%, respectively, P = .02), or to the passive controls (22%, P < .001). MeSH allocation within MEDLINE to time-to-event dental articles was inaccurate and inconsistent. Statistical MeSH were omitted from 30% of the included articles and incorrectly allocated to 15% of active controls. Such errors adversely impact search accuracy.

  10. Gastrointestinal Physiology During Head Down Tilt Bedrest in Human Subjects

    Science.gov (United States)

    Vaksman, Z.; Guthienz, J.; Putcha, L.

    2008-01-01

    Introduction: Gastrointestinal (GI) motility plays a key role in the physiology and function of the GI tract. It directly affects absorption of medications and nutrients taken by mouth, in addition to indirectly altering GI physiology by way of changes in the microfloral composition and biochemistry of the GI tract. Astronauts have reported nausea, loss of appetite and constipation during space flight all of which indicate a reduction in GI motility and function similar to the one seen in chronic bed rest patients. The purpose of this study is to determine GI motility and bacterial proliferation during -6 degree head down tilt bed rest (HTD). Methods: Healthy male and female subjects between the ages of 25-40 participated in a 60 day HTD study protocol. GI transit time (GITT) was determined using lactulose breath hydrogen test and bacterial overgrowth was measured using glucose breath hydrogen test. H. Pylori colonization was determined using C13-urea breath test (UBIT#). All three tests were conducted on 9 days before HDT, and repeated on HDT days 2, 28, 58, and again on day 7 after HDT. Results: GITT increased during HTD compared to the respective ambulatory control values; GITT was significantly lower on day 7 after HTD. A concomitant increase in bacterial colonization was also noticed during HDT starting after approximately 28 days of HDT. However, H. Pylori proliferation was not recorded during HDT as indicated by UBIT#. Conclusion: GITT significantly decreased during HDT with a concomitant increase in the proliferation of GI bacterial flora but not H. pylori.

  11. Characterization of the Medical Subject Headings thesaurus for pharmacy.

    Science.gov (United States)

    Minguet, Fernando; Van Den Boogerd, Lucienne; Salgado, Teresa M; Correr, Cassyano J; Fernandez-Llimos, Fernando

    2014-11-15

    The completeness and utility of pharmacy-oriented Medical Subject Headings (MeSH) relative to MeSH terminology pertaining to other healthcare professions (dentistry and nursing) are evaluated. The 2013 version of the MeSH thesaurus-the standard vocabulary used by the National Library of Medicine (NLM) to index articles in PubMed and MEDLINE-was searched for dentistry-, nursing-, and pharmacy-specific terms using a truncation strategy (search terms: nurs*, dent*, and pharm*); the hierarchical level of each term and the number of descendant terms (an indication of the granularity of the associated NLM-indexed content) were determined. PubMed searches were conducted to identify areas of the MeSH hierarchy containing dentistry- and nursing-specific terms but no equivalent pharmacy-specific term. The search of the MeSH thesaurus identified 145 terms representing dentistry-specific activities and 94 and 26 terms specific to nursing and pharmacy practice, respectively. Analysis of the three sets of MeSH terms indicated that dentistry-oriented MeSH terms were generally situated more prominently within the MeSH hierarchy than terms for nursing- and pharmacy-oriented research; the MeSH terminology oriented toward nursing or dentistry practice was relatively more granular, allowing for increased specificity and power of information retrieval during PubMed and MEDLINE searches. Seventeen proposed new MeSH terms describing key areas of pharmacy practice were identified; the inclusion of these terms in the MeSH hierarchy could substantially expand and improve the retrievability of NLM-indexed literature. Imbalances and gaps were found in MeSH coverage of pharmacy concepts and terminology relative to MeSH terminology specific to the nursing and dentistry professions. Copyright © 2014 by the American Society of Health-System Pharmacists, Inc. All rights reserved.

  12. SPARED RECOGNITION CAPACITY IN ELDERLY AND CLOSED-HEAD-INJURY SUBJECTS WITH CLINICAL MEMORY DEFICITS

    NARCIS (Netherlands)

    Spikman, J.M.; Berg, I.J.; Deelman, B.G.

    This study describes the performance of three groups of subjects on a pictorial forced-recognition task, the Hundred Pictures Test. The aim was to determine whether subjects with memory deficits (elderly and closed-head-injured subjects) would perform as well as healthy young subjects, both on

  13. Functional correlates of detailed body composition in healthy elderly subjects.

    Science.gov (United States)

    Geisler, Corinna; Schweitzer, Lisa; Müller, Manfred James

    2018-01-01

    Methods of body composition analysis are now widely used to characterize health status, i.e., nutritional status, metabolic rates, and cardiometabolic risk factors. However, the functional correlates of individual body components have not been systematically analyzed. In this study, we have used a two-compartment model, which was assessed by air displacement plethysmography. Detailed body composition was measured by whole body magnetic resonance imaging in a healthy population of 40 Caucasians, aged 65-81 yr (20 men; body mass index range: 18.6-37.2 kg/m 2 ). Physical, metabolic, as well as endocrine functions included pulmonary function, handgrip strength, gait speed, sit-to-stand test, physical activity, blood pressure, body temperature, resting energy expenditure (REE), liver and kidney functions (glomerular filtration rate), insulin sensitivity [homeostasis model assessment (HOMA)], plasma lipids, plasma leptin, testosterone, dehydroepiandrosterone, insulin-like growth factor I levels, thyroid status, vitamins, and inflammation. Individual body compartments were intercorrelated, e.g., skeletal muscle mass (SM) correlated with visceral adipose tissue ( r = 0.53) and kidneys ( r = 0.62). For the functional correlates, SM ( r = 0.58) and liver volume ( r = 0.63) were associated with REE, SM correlated with handgrip strength ( r = 0.57), and kidneys with glomerular filtration rate ( r = 0.57). While visceral adipose tissue correlated with HOMA ( r = 0.59), subcutaneous adipose tissue was related to plasma leptin levels ( r = 0.84). The subcutaneous adipose tissue-to-leptin relationship was moderated by inflammation increasing the explained variance of leptin levels by 4.0%. In linear regression analysis, detailed body composition explained variances in REE (75.0%), HOMA (41.0%), and leptin (78.0%) compared with a body mass index-based model (REE 16.0%, HOMA 31.0%, leptin 45.0%). In addition, detailed body composition explained 39

  14. Correlation between Trunk Posture and Neck Reposition Sense among Subjects with Forward Head Neck Postures

    OpenAIRE

    Han Suk Lee; Hyung Kuk Chung; Sun Wook Park

    2015-01-01

    Objective. To assess the correlation of abnormal trunk postures and reposition sense of subjects with forward head neck posture (FHP). Methods. In all, postures of 41 subjects were evaluated and the FHP and trunk posture including shoulder, scapular level, pelvic side, and anterior tilting degrees were analyzed. We used the head repositioning accuracy (HRA) test to evaluate neck position senses of neck flexion, neck extension, neck right and left side flexion, and neck right and left rotation...

  15. Activation of rectus capitis posterior major muscles during voluntary retraction of the head in asymptomatic subjects.

    Science.gov (United States)

    Hallgren, Richard C; Rowan, Jacob J; Bai, Peng; Pierce, Steven J; Shafer-Crane, Gail A; Prokop, Lawrence L

    2014-01-01

    The purpose of this study was to assess levels of electromyographic activity measured from rectus capitis posterior major (RCPM) muscles of asymptomatic subjects as their heads moved from a self-defined neutral position to a retracted position. A 2 × 2 within-subjects factorial research design was used. Disposable, intramuscular electrodes were used to collect electromyographic data from asymptomatic subjects between the ages of 20 and 40 years old. Data analysis was performed using mixed effects β regression models. Activation of RCPM muscles was found to significantly increase (P < .0001) as the head moved from a self-defined neutral position to a retracted position. Rectus capitis posterior major muscle activation levels, measured as a function of head position, have not been previously reported. The findings from this study showed that RCPM muscle activation significantly increases during voluntary retraction of the head. Copyright © 2014 National University of Health Sciences. Published by Elsevier Inc. All rights reserved.

  16. Effect of Head Elevation on Passive Upper Airway Collapsibility in Normal Subjects under Propofol Anesthesia

    Science.gov (United States)

    Kobayashi, Masato; Ayuse, Takao; Hoshino, Yuko; Kurata, Shinji; Moromugi, Shunji; Schneider, Hartmut; Kirkness, Jason P.; Schwartz, Alan R.; Oi, Kumiko

    2011-01-01

    Background Head elevation can restore airway patency during anesthesia, although its effect may be offset by concomitant bite opening or accidental neck flexion. The aim of this study is to examine the effect of head elevation on the passive upper airway collapsibility during propofol anesthesia. Method Twenty male subjects were studied, randomized to one of two experimental groups: Fixed-jaw or Free-jaw. Propofol infusion was used for induction and to maintain blood concentration constant at a target level between 1.5 and 2.0 μg/ml. Nasal mask pressure (PN) was intermittently reduced to evaluate the upper airway collapsibility (passive PCRIT) and upstream resistance (RUS) at each level of head elevation (0, 3, 6, & 9 cm). We measured the Frankfort plane (head flexion) and the mandible plane (jaw opening) angles at each level of head elevation. Analysis of variance was used to determine effect of head elevation on PCRIT, head flexion and jaw opening within each group. Results In both groups the Frankfort plane and mandible plane angles increased as with head elevation (P elevation decreased upper airway collapsibility (PCRIT ~ −7 cmH2O at greater than 6 cm elevation) compared to the baseline position (PCRIT ~ −3 cmH2O at 0 cm elevation; P elevating the head position by 6 cm while ensuring mouth closure (centric occlusion) produces substantial decreases in upper airway collapsibility and maintains upper airway patency during anesthesia. PMID:21701378

  17. Effect of head elevation on passive upper airway collapsibility in normal subjects during propofol anesthesia.

    Science.gov (United States)

    Kobayashi, Masato; Ayuse, Takao; Hoshino, Yuko; Kurata, Shinji; Moromugi, Shunji; Schneider, Hartmut; Kirkness, Jason P; Schwartz, Alan R; Oi, Kumiko

    2011-08-01

    Head elevation can restore airway patency during anesthesia, although its effect may be offset by concomitant bite opening or accidental neck flexion. The aim of this study is to examine the effect of head elevation on the passive upper airway collapsibility during propofol anesthesia. Twenty male subjects were studied, randomized to one of two experimental groups: fixed-jaw or free-jaw. Propofol infusion was used for induction and to maintain blood at a constant target concentration between 1.5 and 2.0 μg/ml. Nasal mask pressure (PN) was intermittently reduced to evaluate the upper airway collapsibility (passive PCRIT) and upstream resistance (RUS) at each level of head elevation (0, 3, 6, and 9 cm). The authors measured the Frankfort plane (head flexion) and the mandible plane (jaw opening) angles at each level of head elevation. Analysis of variance was used to determine the effect of head elevation on PCRIT, head flexion, and jaw opening within each group. In both groups the Frankfort plane and mandible plane angles increased with head elevation (P elevation decreased upper airway collapsibility (PCRIT ~ -7 cm H₂O at greater than 6 cm elevation) compared with the baseline position (PCRIT ~ -3 cm H₂O at 0 cm elevation; P Elevating the head position by 6 cm while ensuring mouth closure (centric occlusion) produces substantial decreases in upper airway collapsibility and maintains upper airway patency during anesthesia.

  18. Comparative Study between the "Lista de Encabezamientos de Materia" by Gloria Escamilla and the "Library of Congress Subject Heading" List.

    Science.gov (United States)

    Alvarez, Fernando

    This study shows to what extent Gloria Escamilla's "Lista de Encabezamientos de Materia," the only published Mexican subject heading list, is equivalent to the Library of Congress subject headings (LCSH). A LCSH heading sample is obtained from OCLC's Online Union Catalog. Using the EPIC search from OCLC, 1947 bibliographic records were…

  19. Cumulating the Supplements to the Seventh Edition of LC Subject Headings

    Directory of Open Access Journals (Sweden)

    Roy B. Torkington

    1973-12-01

    Full Text Available A description is presented of the project of the University of California Library Automation Program to cumulate the 1966 through 1971 supplements to the Library of Congress Subject Headings. The University of California Institute of Library Research MARC processing software, BIBCON, was used, with specially written programs. The resulting cumulation was edited, printed in book form, and made available to libraries. The final task involved merging six MARC files into one file of over 125,000 records and then printing that file in a format similar to that of LC Subject Headings. The project was a cooperative effort with participation by people from several UC campuses.

  20. MIDA: A Multimodal Imaging-Based Detailed Anatomical Model of the Human Head and Neck.

    Directory of Open Access Journals (Sweden)

    Maria Ida Iacono

    Full Text Available Computational modeling and simulations are increasingly being used to complement experimental testing for analysis of safety and efficacy of medical devices. Multiple voxel- and surface-based whole- and partial-body models have been proposed in the literature, typically with spatial resolution in the range of 1-2 mm and with 10-50 different tissue types resolved. We have developed a multimodal imaging-based detailed anatomical model of the human head and neck, named "MIDA". The model was obtained by integrating three different magnetic resonance imaging (MRI modalities, the parameters of which were tailored to enhance the signals of specific tissues: i structural T1- and T2-weighted MRIs; a specific heavily T2-weighted MRI slab with high nerve contrast optimized to enhance the structures of the ear and eye; ii magnetic resonance angiography (MRA data to image the vasculature, and iii diffusion tensor imaging (DTI to obtain information on anisotropy and fiber orientation. The unique multimodal high-resolution approach allowed resolving 153 structures, including several distinct muscles, bones and skull layers, arteries and veins, nerves, as well as salivary glands. The model offers also a detailed characterization of eyes, ears, and deep brain structures. A special automatic atlas-based segmentation procedure was adopted to include a detailed map of the nuclei of the thalamus and midbrain into the head model. The suitability of the model to simulations involving different numerical methods, discretization approaches, as well as DTI-based tensorial electrical conductivity, was examined in a case-study, in which the electric field was generated by transcranial alternating current stimulation. The voxel- and the surface-based versions of the models are freely available to the scientific community.

  1. Bibliometric perspectives on medical innovation using the medical subject headings of PubMed

    NARCIS (Netherlands)

    Leydesdorff, L.; Rotolo, D.; Rafols, I.

    2012-01-01

    Multiple perspectives on the nonlinear processes of medical innovations can be distinguished and combined using the Medical Subject Headings (MeSH) of the MEDLINE database. Focusing on three main branches—"diseases," "drugs and chemicals," and "techniques and equipment"—we use base maps and overlay

  2. PHYSIOLOGICAL ASSESSMENT OF HEAD-OUT AQUATIC EXERCISES IN HEALTHY SUBJECTS: A QUALITATIVE REVIEW

    Directory of Open Access Journals (Sweden)

    Tiago M Barbosa

    2009-06-01

    Full Text Available In the last decades head-out aquatic exercises became one of the most important physical activities within the health system. Massive research has been produced throughout these decades in order to better understand the role of head-out aquatic exercises in populations' health. Such studies aimed to obtain comprehensive knowledge about the acute and chronic response of subjects performing head-out aquatic exercises. For that, it is assumed that chronic adaptations represent the accumulation of acute responses during each aquatic session. The purpose of this study was to describe the "state of the art" about physiological assessment of head-out aquatic exercises based on acute and chronic adaptations in healthy subjects based on a qualitative review. The main findings about acute response of head-out aquatic exercise according to water temperature, water depth, type of exercise, additional equipment used, body segments exercising and music cadence will be described. In what concerns chronic adaptations, the main results related to cardiovascular and metabolic adaptations, muscular strength, flexibility and body composition improvements will be reported

  3. Flexural Behavior and Strut-and-tie Model of Joints with headed bar details Connecting Precast Members

    Directory of Open Access Journals (Sweden)

    Lungui Li

    2016-03-01

    Full Text Available This paper focuses on an investigation of an improved longitudinal joint with headed bar details connecting precast decked bulb tee girders for accelerated bridge construction. The testing study included two phases. In phase I, five beam specimens with various headed bar details and a continuous reinforced specimen were tested under flexure loadings. A headed bar detail with 152 mm lap length was recommended for further study. In phase II, two slabs connected by the selected joint were tested under flexure and flexure-shear loadings. Test results were evaluated based on structural behaviors including capacity, deflection, and failure mode. At last, a validated strut-and-tie model was developed to anticipate the capacity of the improved longitudinal joint. It shows that the proposed headed bar details can provide a continuous force transfer in the joint. The lap length interacting with the spacing of the headed bar is the most significant parameter of the improved joint details. To develop a full strength joint, the lap length should not be less than 152 mm and be designed by the strength requirement. The strut-and-tie model can provide a conservative strength anticipation of the joint and it is the lower bound of the ultimate capacity of the joint.

  4. Analysing the Role of the Subject Head of Department in Secondary Schools in England and Wales: Towards a Theoretical Framework.

    Science.gov (United States)

    Turner, Chris; Bolam, Ray

    1998-01-01

    Argues that contingency theory offers a useful basis for considering the work of subject heads of department in (British) secondary schools, particularly if heads are actively trying to influence the quality of teaching and learning in their curriculum areas. Develops a provisional model to shed light on how department heads actually work with…

  5. Searching the literature using medical subject headings versus text word with PubMed.

    Science.gov (United States)

    Chang, Angela A; Heskett, Karen M; Davidson, Terence M

    2006-02-01

    This study was conducted to investigate the performance of two search strategies in the retrieval of information from the National Library of Medicine (NLM) on otolaryngology-head and neck surgery related conditions and diagnoses using PubMed. Two search strategies-one based on the use of Medical Subject Headings (MeSH) and the second based on text word searching-were compared. The MeSH search provided a more efficient search than the text word search. Head and neck surgeons can most efficiently search the NLM using PubMed as a search engine by initiating the search with MeSH terms. Once a key article is identified, the searcher should use the "Related Articles" feature.

  6. Neck kinematics and sternocleidomastoid muscle activation during neck rotation in subjects with forward head posture

    Science.gov (United States)

    Kim, Man-Sig

    2015-01-01

    [Purpose] The present study investigated differences in the kinematics of the neck and activation of the sternocleidomastoid (SCM) muscle during neck rotation between subjects with and without forward head posture (FHP). [Subjects and Methods] Twenty-eight subjects participated in the study (14 with FHP, 14 without FHP). Subjects performed neck rotation in two directions, left and right. The kinematics of rotation-lateral flexion movement patterns were recorded using motion analysis. Activity in the bilateral SCM muscles was measured using surface electromyography. Differences in neck kinematics and activation of SCM between the groups were analyzed by independent t-tests. [Results] Maintaining FHP increased the rotation-lateral flexion ratio significantly in both directions. The FHP group had significantly faster onset time for lateral flexion movement in both directions during neck rotation. Regarding the electromyography of the SCM muscles during neck rotation in both directions, the activity values of subjects with FHP were greater than those of subjects without FHP for the contralateral SCM muscles. [Conclusion] FHP can induce changes in movement in the frontal plane and SCM muscle activation during neck rotation. Thus, clinicians should consider movement in the frontal plane as well as in the sagittal plane when assessing and treating patients with forward head posture. PMID:26696712

  7. Subject-specific geometrical detail rather than cost function formulation affects hip loading calculation.

    Science.gov (United States)

    Wesseling, Mariska; De Groote, Friedl; Bosmans, Lode; Bartels, Ward; Meyer, Christophe; Desloovere, Kaat; Jonkers, Ilse

    2016-11-01

    This study assessed the relative importance of introducing an increasing level of medical image-based subject-specific detail in bone and muscle geometry in the musculoskeletal model, on calculated hip contact forces during gait. These forces were compared to introducing minimization of hip contact forces in the optimization criterion. With an increasing level of subject-specific detail, specifically MRI-based geometry and wrapping surfaces representing the hip capsule, hip contact forces decreased and were more comparable to contact forces measured using instrumented prostheses (average difference of 0.69 BW at the first peak compared to 1.04 BW for the generic model). Inclusion of subject-specific wrapping surfaces in the model had a greater effect than altering the cost function definition.

  8. Bibliometric Perspectives on Medical Innovation using the Medical Subject Headings (MeSH) of PubMed

    CERN Document Server

    Leydesdorff, Loet; Rafols, Ismael

    2012-01-01

    Multiple perspectives on the nonlinear processes of medical innovations can be distinguished and combined using the Medical Subject Headings (MeSH) of the Medline database. Focusing on three main branches-"diseases," "drugs and chemicals," and "techniques and equipment"-we use base maps and overlay techniques to investigate the translations and interactions and thus to gain a bibliometric perspective on the dynamics of medical innovations. To this end, we first analyze the Medline database, the MeSH index tree, and the various options for a static mapping from different perspectives and at different levels of aggregation. Following a specific innovation (RNA interference) over time, the notion of a trajectory which leaves a signature in the database is elaborated. Can the detailed index terms describing the dynamics of research be used to predict the diffusion dynamics of research results? Possibilities are specified for further integration between the Medline database, on the one hand, and the Science Citati...

  9. Investigating the visual inspection subjectivity on the contrast-detail evaluation in digital mammography images

    Science.gov (United States)

    Sousa, Maria A. Z.; Medeiros, Regina B.; Schiabel, Homero

    2014-03-01

    A major difficulty in the interpretation of mammographic images is the low contrast and, in the case of early detection of breast cancer, the reduced size of the features of malignancy on findings such as microcalcifications. Furthermore, image assessment is subject to significant reliance of the capacity of observation of the expert that will perform it, compromising the final diagnosis accuracy. Thinking about this aspect, this study evaluated the subjectivity of visual inspection to assess the contrast-detail in mammographic images. For this, we compared the human readings of images generated with the CDMAM phantom performed by four observers, enabling to determining a threshold of contrast visibility in each diameter disks present in the phantom. These thresholds were compared graphically and by statistical measures allowing us to build a strategy for use of contrast and detail (dimensions) as parameters of quality in mammography.

  10. Correlation between Trunk Posture and Neck Reposition Sense among Subjects with Forward Head Neck Postures

    Science.gov (United States)

    Lee, Han Suk; Chung, Hyung Kuk; Park, Sun Wook

    2015-01-01

    Objective. To assess the correlation of abnormal trunk postures and reposition sense of subjects with forward head neck posture (FHP). Methods. In all, postures of 41 subjects were evaluated and the FHP and trunk posture including shoulder, scapular level, pelvic side, and anterior tilting degrees were analyzed. We used the head repositioning accuracy (HRA) test to evaluate neck position senses of neck flexion, neck extension, neck right and left side flexion, and neck right and left rotation and calculated the root mean square error in trials for each subject. Spearman's rank correlation coefficients and regression analysis were used to assess the degree of correlation between the trunk posture and HRA value, and a significance level of α = 0.05 was considered. Results. There were significant correlations between the HRA value of right side neck flexion and pelvic side tilt angle (p postures. Conclusion. Verifying pelvic postures should be prioritized when movement is limited due to the vitiation of the proprioceptive sense of neck caused by FHP. PMID:26583125

  11. Correlation between Trunk Posture and Neck Reposition Sense among Subjects with Forward Head Neck Postures

    Directory of Open Access Journals (Sweden)

    Han Suk Lee

    2015-01-01

    Full Text Available Objective. To assess the correlation of abnormal trunk postures and reposition sense of subjects with forward head neck posture (FHP. Methods. In all, postures of 41 subjects were evaluated and the FHP and trunk posture including shoulder, scapular level, pelvic side, and anterior tilting degrees were analyzed. We used the head repositioning accuracy (HRA test to evaluate neck position senses of neck flexion, neck extension, neck right and left side flexion, and neck right and left rotation and calculated the root mean square error in trials for each subject. Spearman’s rank correlation coefficients and regression analysis were used to assess the degree of correlation between the trunk posture and HRA value, and a significance level of α = 0.05 was considered. Results. There were significant correlations between the HRA value of right side neck flexion and pelvic side tilt angle (p<0.05. If pelvic side tilting angle increases by 1 degree, right side neck flexion increased by 0.76 degrees (p=0.026. However, there were no significant correlations between other neck motions and trunk postures. Conclusion. Verifying pelvic postures should be prioritized when movement is limited due to the vitiation of the proprioceptive sense of neck caused by FHP.

  12. Trismus following different treatment modalities for head and neck cancer: a systematic review of subjective measures.

    Science.gov (United States)

    Loh, Sook Y; Mcleod, Robert W J; Elhassan, Hassan A

    2017-07-01

    The aim of this review was to compare systematically the subjective measure of trismus between different interventions to treat head and neck cancer, particularly those of the oropharynx. Using The Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) Guidelines, Six databases were searched for the text using various terms which include "oropharyngeal/head and neck cancer", "trismus/mouth opening" and the various treatment modalities. Included in the review were clinical studies (> or =10 patients). Three observers independently assessed the papers identified. Among the six studies reviewed, five showed a significantly worst outcome with regard to the quality-of-life questionnaire scores for a radiotherapy or surgery and radiotherapy (RT) ± chemotherapy or chemoradiotherapy when compared to surgery alone. Only one study showed no significant difference between surgery alone and other treatment modalities. Subjective quality-of-life measures are a concurrent part of modern surgical practice. Although subjective measures were utilised to measure post operative trismus successfully, there was no consensus as to which treatment modality had overall better outcomes, with conflicting studies in keeping with the current debate in this field. Larger and higher quality studies are needed to compare all three treatment modalities.

  13. Correlation between Trunk Posture and Neck Reposition Sense among Subjects with Forward Head Neck Postures.

    Science.gov (United States)

    Lee, Han Suk; Chung, Hyung Kuk; Park, Sun Wook

    2015-01-01

    To assess the correlation of abnormal trunk postures and reposition sense of subjects with forward head neck posture (FHP). In all, postures of 41 subjects were evaluated and the FHP and trunk posture including shoulder, scapular level, pelvic side, and anterior tilting degrees were analyzed. We used the head repositioning accuracy (HRA) test to evaluate neck position senses of neck flexion, neck extension, neck right and left side flexion, and neck right and left rotation and calculated the root mean square error in trials for each subject. Spearman's rank correlation coefficients and regression analysis were used to assess the degree of correlation between the trunk posture and HRA value, and a significance level of α = 0.05 was considered. There were significant correlations between the HRA value of right side neck flexion and pelvic side tilt angle (p neck flexion increased by 0.76 degrees (p = 0.026). However, there were no significant correlations between other neck motions and trunk postures. Verifying pelvic postures should be prioritized when movement is limited due to the vitiation of the proprioceptive sense of neck caused by FHP.

  14. Redefining the pharmacology and pharmacy subject category in the journal citation reports using medical subject headings (MeSH).

    Science.gov (United States)

    Minguet, Fernando; Salgado, Teresa M; Santopadre, Claudio; Fernandez-Llimos, Fernando

    2017-10-01

    Background The Journal Citation Reports (JCR) Pharmacology and Pharmacy subject category is heterogeneous. The inclusion of journals with basic and clinical scopes, which have different citation patterns, compromises comparability of impact factors among journals within the category. Objective To subdivide the Pharmacology and Pharmacy category into basic pharmacology, clinical pharmacology, and pharmacy based on the analyses of Medical Subject Headings (MeSH) as a proxy of journals' scopes. Setting JCR. Method All articles, and respective MeSH, published in 2013, 2014, and 2015 in all journals included in the 2014 JCR Pharmacology and Pharmacy category were retrieved from PubMed. Several models using a combination of the 14 MeSH categories and specific MeSH tree branches were tested using hierarchical cluster analysis. Main outcome measure Distribution of journals across the subcategories of the JCR Pharmacology and Pharmacy subject category. Results A total of 107,847 articles from 214 journals were included. Nine different models combining the MeSH categories M (Persons) and N (Health Care) with specific MeSH tree branches (selected ad-hoc) and Pharmacy-specific MeSH (identified in previous research) consistently grouped 142 journals (66.4%) in homogeneous groups reflecting their basic and clinical pharmacology, and pharmacy scopes. Ultimately, journals were clustered into: 150 in basic pharmacology, 43 in clinical pharmacology, 16 in basic pharmacology and clinical pharmacology, and 5 in pharmacy. Conclusion The reformulation of the Pharmacology and Pharmacy category into three categories was demonstrated by the consistent results obtained from testing nine different clustering models using the MeSH terms assigned to their articles.

  15. A case study: using social tagging to engage students in learning Medical Subject Headings*

    Science.gov (United States)

    Bresnahan, Megan; Flynn, David B.; Harzbecker, Joseph; Blanchard, Mary; Ginn, David

    2009-01-01

    In exploring new ways of teaching students how to use Medical Subject Headings (MeSH), librarians at Boston University's Alumni Medical Library (AML) integrated social tagging into their instruction. These activities were incorporated into the two-credit graduate course, “GMS MS 640: Introduction to Biomedical Information,” required for all students in the graduate medical science program. Hands-on assignments and in-class exercises enabled librarians to present MeSH and the concept of a controlled vocabulary in a familiar and relevant context for the course's Generation Y student population and provided students the opportunity to actively participate in creating their education. At the conclusion of these activities, students were surveyed regarding the clarity of the presentation of the MeSH vocabulary. Analysis of survey responses indicated that 46% found the concept of MeSH to be the clearest concept presented in the in-class intervention. PMID:19404497

  16. Internal Lymphedema Correlates with Subjective and Objective Measures of Dysphagia in Head and Neck Cancer Patients.

    Science.gov (United States)

    Jackson, Leanne K; Ridner, Sheila H; Deng, Jie; Bartow, Carmin; Mannion, Kyle; Niermann, Ken; Gilbert, Jill; Dietrich, Mary S; Cmelak, Anthony J; Murphy, Barbara A

    2016-09-01

    Tumor/treatment-related internal lymphedema (IL) and/or external lymphedema (EL) are associated with functional deficits and increased symptom burden in head and neck cancer patients (HNCP). Previously, we noted association between EL/IL and patient-reported dysphagia using the Vanderbilt Head and Neck Symptom Survey (VHNSS) version 1.0. To determine the relationship between IL/EL and subjective and objective measures of swallowing function. Eighty-one HNCP completed: (1) VHNSS version 2.0, including 13 swallowing/nutrition-related questions grouped into three clusters: swallow solids (ss), swallow liquids (sl), and nutrition(nt); (2) physical assessment of EL using Foldi scale; (3) endoscopic assessment of IL using Patterson scale (n = 56); and (4) modified barium swallow study rated by dysphagia outcome and severity scale (DOSS) and in conjunction with a swallow evaluation by National Outcomes Measurement System (NOMS). Examinations were performed at varied time points to assess lymphedema spectrum, from baseline (n = 15, 18.1%) to 18 months post-therapy (n = 20, 24.1%). VHNSS swallow/nutrition items scores correlated with NOMS/DOSS ratings (p nutrition scores correlated with maximum grade of swelling for any single structure on Patterson scale: ss (0.43; p = 0.001); sl (0.38; p = 0.004); nt (0.41; p = 0.002). IL of aryepiglottic/pharyngoepiglottic folds, epiglottis, and pyriform sinus were most strongly correlated with VHNSS and NOMS ratings. NOMS/DOSS ratings correlated with EL (> = -0.34; p nutrition items and EL ( 0.20). IL correlated with subjective and objective measures of swallow dysfunction. Longitudinal analysis of trajectory and impact of IL/EL on dysphagia is ongoing.

  17. Transforming the Medical Subject Headings into Linked Data: Creating the Authorized Version of MeSH in RDF.

    Science.gov (United States)

    Bushman, Barbara; Anderson, David; Fu, Gang

    In February 2014 the National Library of Medicine formed the Linked Data Infrastructure Working Group to investigate the potential for publishing linked data, determine best practices for publishing linked data, and prioritize linked data projects, beginning with transforming the Medical Subject Headings as a linked data pilot. This article will review the pilot project to convert the Medical Subject Headings from XML to RDF. It will discuss the collaborative process, the technical and organizational issues tackled, and the future of linked data at the library.

  18. Mapping of medical acronyms and initialisms to Medical Subject Headings (MeSH) across selected systems.

    Science.gov (United States)

    Shultz, Mary

    2006-10-01

    Given the common use of acronyms and initialisms in the health sciences, searchers may be entering these abbreviated terms rather than full phrases when searching online systems. The purpose of this study is to evaluate how various MEDLINE Medical Subject Headings (MeSH) interfaces map acronyms and initialisms to the MeSH vocabulary. The interfaces used in this study were: the PubMed MeSH database, the PubMed Automatic Term Mapping feature, the NLM Gateway Term Finder, and Ovid MEDLINE. Acronyms and initialisms were randomly selected from 2 print sources. The test data set included 415 randomly selected acronyms and initialisms whose related meanings were found to be MeSH terms. Each acronym and initialism was entered into each MEDLINE MeSH interface to determine if it mapped to the corresponding MeSH term. Separately, 46 commonly used acronyms and initialisms were tested. While performance differed widely, the success rates were low across all interfaces for the randomly selected terms. The common acronyms and initialisms tested at higher success rates across the interfaces, but the differences between the interfaces remained. Online interfaces do not always map medical acronyms and initialisms to their corresponding MeSH phrases. This may lead to inaccurate results and missed information if acronyms and initialisms are used in search strategies.

  19. Leveraging output term co-occurrence frequencies and latent associations in predicting medical subject headings.

    Science.gov (United States)

    Kavuluru, Ramakanth; Lu, Yuan

    2014-11-01

    Trained indexers at the National Library of Medicine (NLM) manually tag each biomedical abstract with the most suitable terms from the Medical Subject Headings (MeSH) terminology to be indexed by their PubMed information system. MeSH has over 26,000 terms and indexers look at each article's full text while assigning the terms. Recent automated attempts focused on using the article title and abstract text to identify MeSH terms for the corresponding article. Most of these approaches used supervised machine learning techniques that use already indexed articles and the corresponding MeSH terms. In this paper, we present a new indexing approach that leverages term co-occurrence frequencies and latent term associations computed using MeSH term sets corresponding to a set of nearly 18 million articles already indexed with MeSH terms by indexers at NLM. The main goal of our study is to gauge the potential of output label co-occurrences, latent associations, and relationships extracted from free text in both unsupervised and supervised indexing approaches. In this paper, using a novel and purely unsupervised approach, we achieve a micro-F-score that is comparable to those obtained using supervised machine learning techniques. By incorporating term co-occurrence and latent association features into a supervised learning framework, we also improve over the best results published on two public datasets.

  20. Improving information retrieval using Medical Subject Headings Concepts: a test case on rare and chronic diseases.

    Science.gov (United States)

    Darmoni, Stéfan J; Soualmia, Lina F; Letord, Catherine; Jaulent, Marie-Christine; Griffon, Nicolas; Thirion, Benoît; Névéol, Aurélie

    2012-07-01

    As more scientific work is published, it is important to improve access to the biomedical literature. Since 2000, when Medical Subject Headings (MeSH) Concepts were introduced, the MeSH Thesaurus has been concept based. Nevertheless, information retrieval is still performed at the MeSH Descriptor or Supplementary Concept level. The study assesses the benefit of using MeSH Concepts for indexing and information retrieval. Three sets of queries were built for thirty-two rare diseases and twenty-two chronic diseases: (1) using PubMed Automatic Term Mapping (ATM), (2) using Catalog and Index of French-language Health Internet (CISMeF) ATM, and (3) extrapolating the MEDLINE citations that should be indexed with a MeSH Concept. Type 3 queries retrieve significantly fewer results than type 1 or type 2 queries (about 18,000 citations versus 200,000 for rare diseases; about 300,000 citations versus 2,000,000 for chronic diseases). CISMeF ATM also provides better precision than PubMed ATM for both disease categories. Using MeSH Concept indexing instead of ATM is theoretically possible to improve retrieval performance with the current indexing policy. However, using MeSH Concept information retrieval and indexing rules would be a fundamentally better approach. These modifications have already been implemented in the CISMeF search engine.

  1. Distancing, self-esteem, and subjective well-being in head and neck cancer.

    Science.gov (United States)

    Devins, Gerald M; Wong, Janice C; Payne, Ada Y M; Lebel, Sophie; Lee, Ruth N F; Mah, Kenneth; Irish, Jonathan; Rodin, Gary

    2015-11-01

    Distancing (i.e. construing oneself as dissimilar to a negatively-stereotyped group) preserves self-esteem and may benefit other domains of subjective well-being. Head and neck cancer (HNC) is stigmatized because major risk factors include avoidable lifestyle variables (smoking, alcohol consumption, and human papilloma virus). Because the benefits of coping efforts, such as distancing, are most evident when people are under stress, we hypothesize that the psychosocial benefits of distancing will be most pronounced when cancer and its treatment interfere substantially with participation in valued activities and interests (i.e. high illness intrusiveness). To test whether distancing preserves self-esteem and other domains of subjective well-being (SWB) in HNC, especially when illness intrusiveness is high. Five hundred and twenty-two HNC outpatients completed a semantic-differential measure of perceived similarity to the 'cancer patient' and measures of illness intrusiveness, self-esteem, depressive symptoms, and psychological well-being in structured interviews. Evaluations of the 'cancer patient' reflected cancer stereotypes. A statistically significant interaction supported the central hypothesis: When people held negative stereotypes, those who construed themselves as similar to the 'cancer patient' reported lower self-esteem than those who construed themselves as dissimilar. Distancing did not benefit other SWB variables. Some results were counter-intuitive: e.g. Emotional distress increased with increasing illness intrusiveness when people did not hold negative cancer stereotypes, but when they held highly negative stereotypes, distress decreased with increasing illness intrusiveness. Overall, distancing preserved self-esteem in people with HNC and was associated with benefits in other SWB domains. Copyright © 2015 John Wiley & Sons, Ltd.

  2. Citation analysis with medical subject Headings (MeSH) using the Web of Knowledge: A new routine

    NARCIS (Netherlands)

    Leydesdorff, L.; Opthof, T.

    2013-01-01

    Citation analysis of documents retrieved from the Medline database (at the Web of Knowledge) has been possible only on a case-by-case basis. A technique is presented here for citation analysis in batch mode using both Medical Subject Headings (MeSH) at the Web of Knowledge and the Science Citation

  3. Quantitative biomedical annotation using medical subject heading over-representation profiles (MeSHOPs

    Directory of Open Access Journals (Sweden)

    Cheung Warren A

    2012-09-01

    Full Text Available Abstract Background MEDLINE®/PubMed® indexes over 20 million biomedical articles, providing curated annotation of its contents using a controlled vocabulary known as Medical Subject Headings (MeSH. The MeSH vocabulary, developed over 50+ years, provides a broad coverage of topics across biomedical research. Distilling the essential biomedical themes for a topic of interest from the relevant literature is important to both understand the importance of related concepts and discover new relationships. Results We introduce a novel method for determining enriched curator-assigned MeSH annotations in a set of papers associated to a topic, such as a gene, an author or a disease. We generate MeSH Over-representation Profiles (MeSHOPs to quantitatively summarize the annotations in a form convenient for further computational analysis and visualization. Based on a hypergeometric distribution of assigned terms, MeSHOPs statistically account for the prevalence of the associated biomedical annotation while highlighting unusually prevalent terms based on a specified background. MeSHOPs can be visualized using word clouds, providing a succinct quantitative graphical representation of the relative importance of terms. Using the publication dates of articles, MeSHOPs track changing patterns of annotation over time. Since MeSHOPs are quantitative vectors, MeSHOPs can be compared using standard techniques such as hierarchical clustering. The reliability of MeSHOP annotations is assessed based on the capacity to re-derive the subset of the Gene Ontology annotations with equivalent MeSH terms. Conclusions MeSHOPs allows quantitative measurement of the degree of association between any entity and the annotated medical concepts, based directly on relevant primary literature. Comparison of MeSHOPs allows entities to be related based on shared medical themes in their literature. A web interface is provided for generating and visualizing MeSHOPs.

  4. Quantitative biomedical annotation using medical subject heading over-representation profiles (MeSHOPs).

    Science.gov (United States)

    Cheung, Warren A; Ouellette, B F Francis; Wasserman, Wyeth W

    2012-09-27

    MEDLINE®/PubMed® indexes over 20 million biomedical articles, providing curated annotation of its contents using a controlled vocabulary known as Medical Subject Headings (MeSH). The MeSH vocabulary, developed over 50+ years, provides a broad coverage of topics across biomedical research. Distilling the essential biomedical themes for a topic of interest from the relevant literature is important to both understand the importance of related concepts and discover new relationships. We introduce a novel method for determining enriched curator-assigned MeSH annotations in a set of papers associated to a topic, such as a gene, an author or a disease. We generate MeSH Over-representation Profiles (MeSHOPs) to quantitatively summarize the annotations in a form convenient for further computational analysis and visualization. Based on a hypergeometric distribution of assigned terms, MeSHOPs statistically account for the prevalence of the associated biomedical annotation while highlighting unusually prevalent terms based on a specified background. MeSHOPs can be visualized using word clouds, providing a succinct quantitative graphical representation of the relative importance of terms. Using the publication dates of articles, MeSHOPs track changing patterns of annotation over time. Since MeSHOPs are quantitative vectors, MeSHOPs can be compared using standard techniques such as hierarchical clustering. The reliability of MeSHOP annotations is assessed based on the capacity to re-derive the subset of the Gene Ontology annotations with equivalent MeSH terms. MeSHOPs allows quantitative measurement of the degree of association between any entity and the annotated medical concepts, based directly on relevant primary literature. Comparison of MeSHOPs allows entities to be related based on shared medical themes in their literature. A web interface is provided for generating and visualizing MeSHOPs.

  5. Medical Subject Heading (MeSH) annotations illuminate maize genetics and evolution.

    Science.gov (United States)

    Beissinger, Timothy M; Morota, Gota

    2017-01-01

    High-density marker panels and/or whole-genome sequencing, coupled with advanced phenotyping pipelines and sophisticated statistical methods, have dramatically increased our ability to generate lists of candidate genes or regions that are putatively associated with phenotypes or processes of interest. However, the speed with which we can validate genes, or even make reasonable biological interpretations about the principles underlying them, has not kept pace. A promising approach that runs parallel to explicitly validating individual genes is analyzing a set of genes together and assessing the biological similarities among them. This is often achieved via gene ontology analysis, a powerful tool that involves evaluating publicly available gene annotations. However, additional resources such as Medical Subject Headings (MeSH) can also be used to evaluate sets of genes to make biological interpretations. In this manuscript, we describe utilizing MeSH terms to make biological interpretations in maize. MeSH terms are assigned to PubMed-indexed manuscripts by the National Library of Medicine, and can be directly mapped to genes to develop gene annotations. Once mapped, these terms can be evaluated for enrichment in sets of genes or similarity between gene sets to provide biological insights. Here, we implement MeSH analyses in five maize datasets to demonstrate how MeSH can be leveraged by the maize and broader crop-genomics community. We demonstrate that MeSH terms can be effectively leveraged to generate hypotheses and make biological interpretations in maize, and we provide a pipeline that enables the use of MeSH terms in other plant species.

  6. THE SHORT-TERM EFFECT OF A HOME-BASED PROGRAM TO CORRECT FORWARD HEAD POSTURE IN ASYMPTOMATIC SUBJECTS

    Directory of Open Access Journals (Sweden)

    Ahmed Omar Abdelnaeem

    2015-08-01

    Full Text Available Background: Neck pain and dysfunction may be the consequence of adopting sustained non-neutral spinal postures. Such postures are associated with increased activation of the neck-shoulder stabilizer muscles, which eventually increase the loading of cervical spine. Forward head posture is a common postural dysfunction that has been associated with many musculoskeletal disorders. The purpose of the study was to investigate the effects of deep cervical flexor muscles training on the severity of forward head posture in asymptomatic subjects. Methods: Forty-one asymptomatic subjects volunteered in this study. Participants were randomly assigned into an intervention group (n= 20that received a home-based training of deep cervical flexor muscles for 6-weeks, and a control group(n= 21 that received only the assessment procedure. Subjects were assessed at baseline and 6weeks later with regards to the severity of forward head as indicated by the cranio-vertebral angle. Also, the strength and endurance of the deep flexor muscles were assessed. Results: After six weeks, participants in the intervention group showed significant improvement in all measured variables compared to the control group. Furthermore, participants in the intervention group showed significant difference in all measured variables after 6-weeks of training compared to baseline, whereas those in the control group remained the same. Conclusion: Six-weeks of deep cervical training improves forward head posture and deep flexors strength and endurance in asymptomatic subjects. Thus, this exercise could be used as a preventive measure against the development of neck dysfunction in at risk population even before the onset of any symptoms.

  7. Hyoid bone position and head posture comparison in skeletal Class I and Class II subjects: A retrospective cephalometric study

    Directory of Open Access Journals (Sweden)

    Pawankumar Dnyandeo Tekale

    2014-01-01

    Full Text Available Objective: The aim of the study was to investigate the hyoid bone position and the head posture using lateral cephalograms in subjects with skeletal Class I and skeletal Class II pattern and to investigate the gender differences. Materials and Methods: The study used lateral cephalograms of 40 subjects (20 skeletal Class I pattern; 20 skeletal Class II pattern. Lateral cephalograms were traced and analyzed for evaluation of the hyoid bone position and the head posture using 34 parameters. Independent sample t-test was performed to compare the differences between the two groups and between genders in each group. Statistical tests were performed using NCSS 2007 software (NCSST, Kaysville, Utah, USA. Results: The linear measurements between the hyoid bone (H and cervical spine (CV2ia, the nasion-sella line, palatal line nasion line, the anterior nasal spine (ANS to perpendicular projection of H on the NLP (NLP- Nasal Linear Projection (H-NLP/ANS as well as the posterior cranial points (Bo, Ar and S points were found to be less in skeletal Class II subjects. The measurement H-CV2ia was found to be less in males with skeletal Class I pattern and H-CV4ia was found to be less in males with skeletal Class II pattern. The natural head posture showed no significant gender differences. Conclusion: The position of hyoid bone was closer to the cervical vertebra horizontally in skeletal Class II subjects when compared with skeletal Class I subjects. In males, the hyoid bone position was closer to the cervical vertebra horizontally both in skeletal Class I and skeletal Class II subjects.

  8. Revision of the Wayne State University Medical Library subject catalog using the 1966 Medical Subject Heading system.

    Science.gov (United States)

    Pings, V M; Ferrario, J A

    1967-01-01

    Wayne State University Medical Library (WSUML) revised its monograph subject catalog in 1961 utilizing the 1960 edition of MeSH as an authority list. With the introduction of MEDLARS in 1963 by NLM, all topical subheadings were omitted from MeSH. Inasmuch as this omission could not accommodate the needs of WSUML, the 1960 edition of MeSH was retained as a guideline. In January 1966, when MeSH resumed the incorporation of topical subheadings, WSUML was faced with a decision whether to continue the current policy or to adopt the form as presented in the latest edition of MeSH. This report describes the methodology employed in adopting a new policy, the findings which resulted from the change, and an evaluation of this reorganization.

  9. [Predict factors associated with malnutrition from patient generated subjective global assessment (PG-SGA) in head and neck cancer patients].

    Science.gov (United States)

    Arribas, L; Hurtós, L; Milà, R; Fort, E; Peiró, I

    2013-01-01

    Patient Generated Subjective Global Assessment (PG-SGA) is a validated tool for nutrition evaluation in patients with cancer. The aim of our study was to estimate the prevalence of malnutrition in head and neck cancer patients at diagnosis and evaluate the independent prognostic factors for malnutrition from PG-SGA. All outpatients attending at the Head and Neck Cancer Multidisciplinary Meeting for primary diagnosis, staging and treatment were evaluated by an oncology dietitian using the patient generated subjective global assessment (PG-SGA). Patients with recurrences or secondary tumours will be excluded. 64 patients were evaluated (55 men and 9 women) with an average age of 63 years and body mass index (BMI) of 25.3 kg/m(2) (SD ± 5.18). After the nutritional assessment we observed that 43.8% of patients were malnourished or at risk of malnutrition. The most frequent symptom at diagnosis was dysphagia (48.4%) and anorexia (26.6%). From PG-SGA, the main prognostic factors (p<0,001) were the percentage of weight loss, serum albumin levels, BMI and the presence of dysphagia or/and anorexia prior diagnosis. Parameters as BMI, weight loss and low albumin levels at the time of diagnosis in head and neck cancer patients are independent predictors for malnutrition as well as the presence of anorexia or dysphagia.reaffirms the need for sustainability of interventions over time. Copyright © AULA MEDICA EDICIONES 2013. Published by AULA MEDICA. All rights reserved.

  10. The multi-modal responses of a physical head model subjected to various blast exposure conditions

    Science.gov (United States)

    Ouellet, S.; Phillippens, M.

    2017-11-01

    The local and global biomechanical response of the body to a blast wave is the first step of a sequence that leads to the development of stresses and strains which can exceed the tolerance of brain tissue. These stresses and strains may then lead to neuro-physical changes in the brain and contribute to initiate a cascade of events leading to injury. The specific biomechanical pathways by which the blast energy is transmitted through the head structure are, however, not clearly understood. Multiple transmission mechanisms have been proposed to explain the generation of brain stresses following the impingement of a blast wave on the head. With the use of a physical head model, the work presented here aims at demonstrating that the proposed transmission mechanisms are not mutually exclusive. They are part of a continuum of head responses where, depending on the exposure conditions, a given mechanism may or may not dominate. This article presents the joint analysis of previous blast test results generated with the brain injury protection evaluation device (BIPED) headform under four significantly different exposure conditions. The focus of the analysis is to demonstrate how the nature of the recorded response is highly dependent on the exposure characteristics and consequently, on the method used to reproduce blast exposure in a laboratory environment. The timing and magnitude of the variations in intra-cranial pressures (ICP) were analysed relative to the external pressure field in order to better understand the wave dynamics occurring within the brain structure of the headform. ICP waveforms were also analysed in terms of their energy spectral density to better identify the energy partitioning between the different modes of response. It is shown that the BIPED response is multi-modal and that the energy partitioning between its different modes of response is greatly influenced by exposure characteristics such as external peak overpressure, impulse, blast wave

  11. Dental needs in Brazilian patients subjected to head and neck radiotherapy

    Energy Technology Data Exchange (ETDEWEB)

    Rosales, Ana Carolina de Mesquita Netto; Jorge, Jacks; Almeida, Oslei Paes de; Lopes, Marcio Ajudarte [University of Campinas (UNICAMP), Piracicaba, SP (Brazil). Piracicaba Dental School. Dept. of Oral Diagnosis], e-mail: malopes@fop.unicamp.br; Esteves, Sergio Carlos Barros [Center of Oncology, Piracicaba, SP (Brazil)

    2009-07-01

    In spite of its recognized benefits in the treatment of malignant tumors, radiation therapy have several side effects in the head and neck region. The evaluation of oral conditions by a dentist is important to prevent or minimize these problems. The aim of this retrospective review was to analyze the dental needs in 357 patients who received radiotherapy in the head and neck region and were treated at Orocentro/FOP/UNICAMP, between January 1990 and December 2004. Review of patient files showed that dental examination before radiotherapy was not performed in 148 patients (41.5%) and was done in 209 patients (58.5%). From the total of examined patients, 94 (45%) did not require dental procedures at the moment of examination, while 115 (55%) presented some sort of dental need. Following the patients after the radiotherapy, it was observed that the group of patients that was evaluated before radiation presented less need of restorations, root canal filling and dental extractions than those who were not evaluated. The results of this study confirm that the evaluation of oral conditions prior to radiotherapy is essential to minimize the dental needs, emphasizing the importance of the dentist in the multidisciplinary team that treats cancer patients. (author)

  12. Impact of head models in N170 component source imaging: results in control subjects and ADHD patients

    Science.gov (United States)

    Beltrachini, L.; Blenkmann, A.; von Ellenrieder, N.; Petroni, A.; Urquina, H.; Manes, F.; Ibáñez, A.; Muravchik, C. H.

    2011-12-01

    The major goal of evoked related potential studies arise in source localization techniques to identify the loci of neural activity that give rise to a particular voltage distribution measured on the surface of the scalp. In this paper we evaluate the effect of the head model adopted in order to estimate the N170 component source in attention deficit hyperactivity disorder (ADHD) patients and control subjects, considering faces and words stimuli. The standardized low resolution brain electromagnetic tomography algorithm (sLORETA) is used to compare between the three shell spherical head model and a fully realistic model based on the ICBM-152 atlas. We compare their variance on source estimation and analyze the impact on the N170 source localization. Results show that the often used three shell spherical model may lead to erroneous solutions, specially on ADHD patients, so its use is not recommended. Our results also suggest that N170 sources are mainly located in the right occipital fusiform gyrus for faces stimuli and in the left occipital fusiform gyrus for words stimuli, for both control subjects and ADHD patients. We also found a notable decrease on the N170 estimated source amplitude on ADHD patients, resulting in a plausible marker of the disease.

  13. Comparison of Medical Subject Headings and text-word searches in MEDLINE to retrieve studies on sleep in healthy individuals*

    Science.gov (United States)

    Jenuwine, Elizabeth S.; Floyd, Judith A.

    2004-01-01

    Objective: The objective was to investigate the performance of two search strategies in the retrieval of primary research papers containing descriptive information on the sleep of healthy people from MEDLINE. Methodology: Two search strategies—one based on the use of only Medical Subject Headings (MeSH), the second based on text-word searching—were evaluated as to their specificity and sensitivity in retrieving a set of relevant research papers published in the journal Sleep from 1996 to 2001 that were preselected by a hand search. Results: The subject search provided higher specificity than the text-word search (66% and 47%, respectively) but lower sensitivity (78% for the subject search versus 88% for the text-word search). Each search strategy gave some unique relevant hits. Conclusions: The two search strategies complemented each other and should be used together for maximal retrieval. No combination of MeSH terms could provide comprehensive yet reasonably precise retrieval of relevant articles. The text-word searching had sensitivity and specificity comparable to the subject search. In addition, use of text words “normal,” “healthy,” and “control” in the title or abstract fields to limit the final sets provided an efficient way to increase the specificity of both search strategies. PMID:15243641

  14. Three-Way Catalog Division Combined with Conversion to Medical Subject Headings (MeSH) in a Medium-sized Medical Library *†

    Science.gov (United States)

    McNutt, Eleanor M.; Poland, Ursula H.

    1974-01-01

    Conversion to MeSH and other reasons are enumerated for the division of an undivided dictionary card catalog into a three-way divided catalog, consisting of Proper Names, Titles, and Topical Subjects sections. Methodology of division is described. Conversion from Library of Congress Subject Headings to Medical Subject Headings (MeSH) as an authority list stimulated such concurrent changes as (1) the introduction of a guide card system that eliminates typing of subject headings on catalog cards and (2) the adoption of a filing system that employs reverse chronological order for all types of sequential material in the Proper Names and Titles sections and for all material in the Topical Subjects section. The ancillary decisions, procedures, and methods necessitated by these major conversions are also described. PMID:4462686

  15. Image quality analysis of high-density diffuse optical tomography incorporating a subject-specific head model

    Directory of Open Access Journals (Sweden)

    Yuxuan eZhan

    2012-05-01

    Full Text Available High-density diffuse optical tomography (HD-DOT methods have shown significant improvement in localization accuracy and image resolution compared to traditional topographic near infrared spectroscopy (NIRS of the human brain. In this work we provide a comprehensive evaluation of image quality in visual cortex mapping via a simulation study with the use of an anatomical head model derived from MRI data of a human subject. A model of individual head anatomy provides the surface shape and internal structure that allow for the construction of a more realistic physical model for the forward problem, as well as the use of a structural constraint in the inverse problem. The HD-DOT model utilized here incorporates multiple source-detector separations with continuous-wave data with added noise based on experimental results. To evaluate image quality we quantify the localization error and localized volume at half maximum (LVHM throughout a region of interest (ROI within the visual cortex and systematically analyze the use of whole brain tissue spatial constraint within image reconstruction. Our results demonstrate that an image quality with less than 10 mm in localization error and 1000 m3 in LVHM can be obtained up to 13 mm below the scalp surface with a typical unconstrained reconstruction and up to 18 mm deep when a spatial constraint based on the brain tissue is utilized.

  16. Evaluation of the sufficiency of pedicled temporoparietal fascial flap on rat head and neck defects: detailed anatomical study.

    Science.gov (United States)

    Kapi, Emin; Bozkurt, Mehmet; Kuvat, Samet Vasfi; Selcuk, Caferi Tayyar

    2014-04-01

    The temporoparietal flap containing the temporal fascia has a wide spectrum of applications in head and neck surgery. The aim of this study is to demonstrate a temporoparietal fascial flap model that can be used in various head and neck defects in rats. Ten male Sprague-Dawley rats weighing 250-300 g were used in this study. Temporoparietal fascial flaps were elevated with the axial pedicle from the rats using microsurgical techniques. The arc rotations of the flaps on the pedicles were examined and the dimensions of the defects these flaps could cover were identified. The flaps were observed to be the right size for use with defects of the occipital, temporal and mastoid regions, ear, facial nerve and the mandible. The temporoparietal fascial flap is an experimental flap model, which can be useful in experimental studies related to complex head and neck defects.

  17. Subjectivity

    Directory of Open Access Journals (Sweden)

    Jesús Vega Encabo

    2015-11-01

    Full Text Available In this paper, I claim that subjectivity is a way of being that is constituted through a set of practices in which the self is subject to the dangers of fictionalizing and plotting her life and self-image. I examine some ways of becoming subject through narratives and through theatrical performance before others. Through these practices, a real and active subjectivity is revealed, capable of self-knowledge and self-transformation. 

  18. Head-to-toe whole-body MRI in psoriatic arthritis, axial spondyloarthritis and healthy subjects

    DEFF Research Database (Denmark)

    Poggenborg, René Panduro; Pedersen, Susanne Juhl; Eshed, Iris

    2015-01-01

    OBJECTIVES: By whole-body MRI (WBMRI), we aimed to examine the frequency and distribution of inflammatory and structural lesions in PsA patients, SpA patients and healthy subjects (HSs), to introduce global WBMRI inflammation/damage scores, and to assess WBMRI's reproducibility and correlation...... of inflammation and structural damage were constructed, and WBMRI findings were compared with clinical measures and convMRI (SpA/HS: spine and SI joints; PsA/HS: hand). RESULTS: The readability (92-100%) and reproducibility (intrareader intraclass correlation coefficient: 0.62-1.0) were high in spine/SI joint......-15]} and SpA [8 (IQR 2-14)] than in HSs [2.5 (IQR 1-4.5)], both P structural damage scores (erosion, fat infiltration and ankylosis) were higher in SpA [7 (IQR 3-12)] than HSs [1.5 (IQR 0-4.5)], P = 0.012. Correlations between WBMRI and convMRI spine and SI joint scores were ρ = 0...

  19. Activation of biceps femoris long head reduces tibiofemoral anterior shear force and tibial internal rotation torque in healthy subjects.

    Science.gov (United States)

    Azmi, Nur Liyana; Ding, Ziyun; Xu, Rui; Bull, Anthony M J

    2018-01-01

    The anterior cruciate ligament (ACL) provides resistance to tibial internal rotation torque and anterior shear at the knee. ACL deficiency results in knee instability. Optimisation of muscle contraction through functional electrical stimulation (FES) offers the prospect of mitigating the destabilising effects of ACL deficiency. The hypothesis of this study is that activation of the biceps femoris long head (BFLH) reduces the tibial internal rotation torque and the anterior shear force at the knee. Gait data of twelve healthy subjects were measured with and without the application of FES and taken as inputs to a computational musculoskeletal model. The model was used to investigate the optimum levels of BFLH activation during FES gait in reducing the anterior shear force to zero. This study found that FES significantly reduced the tibial internal rotation torque at the knee during the stance phase of gait (p = 0.0322) and the computational musculoskeletal modelling revealed that a mean BFLH activation of 20.8% (±8.4%) could reduce the anterior shear force to zero. At the time frame when the anterior shear force was zero, the internal rotation torque was reduced by 0.023 ± 0.0167 Nm/BW, with a mean 188% reduction across subjects (p = 0.0002). In conclusion, activation of the BFLH is able to reduce the tibial internal rotation torque and the anterior shear force at the knee in healthy control subjects. This should be tested on ACL deficient subject to consider its effect in mitigating instability due to ligament deficiency. In future clinical practice, activating the BFLH may be used to protect ACL reconstructions during post-operative rehabilitation, assist with residual instabilities post reconstruction, and reduce the need for ACL reconstruction surgery in some cases.

  20. The video head impulse test (vHIT of semicircular canal function – age dependent normative values of VOR gain in healthy subjects

    Directory of Open Access Journals (Sweden)

    Leigh Andrew McGarvie

    2015-07-01

    Full Text Available Background/Hypothesis. The video Head Impulse Test (vHIT is now widely used to test the function of each of the six semicircular canals individually by measuring the eye rotation response to an abrupt head rotation in the plane of the canal. The main measure of canal adequacy is the ratio of the eye movement response to the head movement stimulus i.e. the gain of the vestibulo-ocular reflex (VOR. However there is a need for normative data about how VOR gain is affected by age and also by head velocity, to allow the response of any particular patient to be compared to response of healthy subjects in their age range. In this study we determined for all six semicircular canals, normative values of VOR gain, for each canal across a range of head velocities, for healthy subjects in each decade of life.Study Design. The VOR gain was measured for all canals across a range of head velocities for at least 10 healthy subjects in decade age bands: 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80-89. Methods. The compensatory eye movement response to a small, unpredictable, abrupt head rotation (head impulse was measured by the ICS Impulse prototype system. The same operator delivered every impulse to every subject. Results. VOR gain decreased at high head velocities, but was largely unaffected by age into the 80-89 year age group. There were some small but systematic differences between the two directions of head rotation, which appear to be largely due to the fact that in this study only the right eye was measured. The results are considered in relation to recent evidence about the effect of age on VOR performance.Conclusion. These normative values allow the results of any particular patient to be compared to the values of healthy people in their age range and so allow, for example, detection of whether a patient has a bilateral vestibular loss. VOR gain, as measured directly by the eye movement response to head rotation, seems largely unaffected by

  1. The Accuracy of 3D Optical Reconstruction and Additive Manufacturing Processes in Reproducing Detailed Subject-Specific Anatomy

    Directory of Open Access Journals (Sweden)

    Paolo Ferraiuoli

    2017-10-01

    Full Text Available 3D reconstruction and 3D printing of subject-specific anatomy is a promising technology for supporting clinicians in the visualisation of disease progression and planning for surgical intervention. In this context, the 3D model is typically obtained from segmentation of magnetic resonance imaging (MRI, computed tomography (CT or echocardiography images. Although these modalities allow imaging of the tissues in vivo, assessment of quality of the reconstruction is limited by the lack of a reference geometry as the subject-specific anatomy is unknown prior to image acquisition. In this work, an optical method based on 3D digital image correlation (3D-DIC techniques is used to reconstruct the shape of the surface of an ex vivo porcine heart. This technique requires two digital charge-coupled device (CCD cameras to provide full-field shape measurements and to generate a standard tessellation language (STL file of the sample surface. The aim of this work was to quantify the error of 3D-DIC shape measurements using the additive manufacturing process. The limitations of 3D printed object resolution, the discrepancy in reconstruction of the surface of cardiac soft tissue and a 3D printed model of the same surface were evaluated. The results obtained demonstrated the ability of the 3D-DIC technique to reconstruct localised and detailed features on the cardiac surface with sub-millimeter accuracy.

  2. Head repositioning accuracy in patients with neck pain and asymptomatic subjects: concurrent validity, influence of motion speed, motion direction and target distance.

    Science.gov (United States)

    Dugailly, Pierre-Michel; De Santis, Roberta; Tits, Mathieu; Sobczak, Stéphane; Vigne, Anna; Feipel, Véronique

    2015-12-01

    Cervicocephalic kinesthetic deficiencies have been demonstrated in patients with chronic neck pain (NP). On the other hand, authors emphasized the use of different motion speeds for assessing functional impairment of the cervical spine. The objectives of this study were (1) to investigate the head repositioning accuracy in NP patients and control subjects and (2) to assess the influence of target distance, motion speed, motion direction and pain. Seventy-one subjects (36 healthy subjects and 35 NP patients; age 30-55 years) performed the head repositioning test (HRT) at two different speeds for horizontal and vertical movements and at two different distances. For each condition, six consecutive trials were sampled. The study showed the validity and reproducibility of the HRT, confirming a dysfunctional threshold of 4.5°. Normative values of head repositioning error up to 3.6° and 7.1° were identified for healthy and NP subjects, respectively. A distance of 180 cm from the target and a natural motion speed increased HRT accuracy. Repositioning after extension movement showed a significantly larger error in both groups. Intensity, duration of pain as well as pain level did not significantly alter head repositioning error. The assessment of proprioceptive performance in healthy and NP subjects allowed the validation of the HRT. The HRT is a simple, not expensive and fast test, easily implementable in daily practice to assess and monitor treatment and evolution of proprioceptive cervical deficits.

  3. Effects of suboccipital release with craniocervical flexion exercise on craniocervical alignment and extrinsic cervical muscle activity in subjects with forward head posture.

    Science.gov (United States)

    Kim, Bo-Been; Lee, Ji-Hyun; Jeong, Hyo-Jung; Cynn, Heon-Seock

    2016-10-01

    Forward head posture is a head-on-trunk malalignment, which results in musculoskeletal dysfunction and neck pain. To improve forward head posture, both the craniocervical flexion exercise and the suboccipital release technique have been used. The purpose of this study was to compare the immediate effects of craniocervical flexion exercise and suboccipital release combined with craniocervical flexion exercise on craniovertebral angle, cervical flexion and extension range of motion, and the muscle activities of the sternocleidomastoid, anterior scalene, and splenius capitis during craniocervical flexion exercise in subjects with forward head posture. In total, 19 subjects (7 males, 12 females) with forward head posture were recruited using G-power software. Each subject performed craniocervical flexion exercise and suboccipital release combined with craniocervical flexion exercise in random order. After one intervention was performed, the subject took a 20min wash out period to minimize any carry-over effect between interventions. Craniovertebral angle, cervical flexion and extension range of motion, and the muscle activities of the sternocleidomastoid, anterior scalene, and splenius capitis were measured. A one-way, repeated-measures ANOVA was used to assess differences between the effects of the craniocervical flexion exercise and suboccipital release combined with craniocervical flexion exercise interventions in the same group. Craniovertebral angle (pflexion range of motion (pflexion exercise compared to craniocervical flexion exercise alone. The muscle activities of the sternocleidomastoid, anterior scalene, and splenius capitis were significantly lower during suboccipital release combined with craniocervical flexion exercise than during craniocervical flexion exercise alone across all craniocervical flexion exercise phases except the first (all pflexion exercise provided superior benefits relative to craniocervical flexion exercise alone as an intervention for

  4. Two Similarity Metrics for Medical Subject Headings (MeSH): An Aid to Biomedical Text Mining and Author Name Disambiguation.

    Science.gov (United States)

    Smalheiser, Neil R; Bonifield, Gary

    2016-04-06

    In the present paper, we have created and characterized several similarity metrics for relating any two Medical Subject Headings (MeSH terms) to each other. The article-based metric measures the tendency of two MeSH terms to appear in the MEDLINE record of the same article. The author-based metric measures the tendency of two MeSH terms to appear in the body of articles written by the same individual (using the 2009 Author-ity author name disambiguation dataset as a gold standard). The two metrics are only modestly correlated with each other (r = 0.50), indicating that they capture different aspects of term usage. The article-based metric provides a measure of semantic relatedness, and MeSH term pairs that co-occur more often than expected by chance may reflect relations between the two terms. In contrast, the author metric is indicative of how individuals practice science, and may have value for author name disambiguation and studies of scientific discovery. We have calculated article metrics for all MeSH terms appearing in at least 25 articles in MEDLINE (as of 2014) and author metrics for MeSH terms published as of 2009. The dataset is freely available for download and can be queried at http://arrowsmith.psych.uic.edu/arrowsmith_uic/mesh_pair_metrics.html. Handling editor: Elizabeth Workman, MLIS, PhD.

  5. Transcending Library Catalogs: A Comparative Study of Controlled Terms in Library of Congress Subject Headings and User-Generated Tags in LibraryThing for Transgender Books

    Science.gov (United States)

    Adler, Melissa

    2009-01-01

    Perhaps the greatest power of folksonomies, especially when set against controlled vocabularies like the Library of Congress Subject Headings, lies in their capacity to empower user communities to name their own resources in their own terms. This article analyzes the potential and limitations of both folksonomies and controlled vocabularies for…

  6. Cited References and Medical Subject Headings (MeSH) as Two Different Knowledge Representations : Clustering and Mappings at the Paper Level

    NARCIS (Netherlands)

    Leydesdorff, L.; Comins, J.A.; Sorensen, A.A.; Bornmann, L.; Hellsten, I.

    2016-01-01

    For the biomedical sciences, the Medical Subject Headings (MeSH) make available a rich feature which cannot currently be merged properly with widely used citing/cited data. Here, we provide methods and routines that make MeSH terms amenable to broader usage in the study of science indicators: using

  7. Comparison of optic area measurement using fundus photography and optical coherence tomography between optic nerve head drusen and control subjects.

    Science.gov (United States)

    Flores-Rodríguez, Patricia; Gili, Pablo; Martín-Ríos, María Dolores; Grifol-Clar, Eulalia

    2013-03-01

    To compare optic disc area measurement between optic nerve head drusen (ONHD) and control subjects using fundus photography, time-domain optical coherence tomography (TD-OCT) and spectral-domain optical coherence tomography (SD-OCT). We also made a comparison between each of the three techniques. We performed our study on 66 eyes (66 patients) with ONHD and 70 healthy control subjects (70 controls) with colour ocular fundus photography at 20º (Zeiss FF 450 IR plus), TD-OCT (Stratus OCT) with the Fast Optic Disc protocol and SD-OCT (Cirrus OCT) with the Optic Disc Cube 200 × 200 protocol for measurement of the optic disc area. The measurements were made by two observers and in each measurement a correction of the image magnification factor was performed. Measurement comparison using the Student's t-test/Mann-Whitney U test, the intraclass correlation coefficient, Pearson/Spearman rank correlation coefficient and the Bland-Altman plot was performed in the statistical analysis. Mean and standard deviation (SD) of the optic disc area in ONHD and in controls was 2.38 (0.54) mm(2) and 2.54 (0.42) mm(2), respectively with fundus photography; 2.01 (0.56) mm(2) and 1.66 (0.37) mm(2), respectively with TD-OCT, and 2.03 (0.49) mm(2) and 1.75 (0.38) mm(2), respectively with SD-OCT. In ONHD and controls, repeatability of optic disc area measurement was excellent with fundus photography and optical coherence tomography (TD-OCT and SD-OCT), but with a low degree of agreement between both techniques. Optic disc area measurement is smaller in ONHD compared to healthy subjects with fundus photography, unlike time-domain and spectral-domain optical coherence tomography in which the reverse is true. Both techniques offer good repeatability, but a low degree of correlation and agreement, which means that optic disc area measurement is not interchangeable or comparable between techniques. Ophthalmic & Physiological Optics © 2013 The College of Optometrists.

  8. Quality of pharmacy-specific Medical Subject Headings (MeSH) assignment in pharmacy journals indexed in MEDLINE.

    Science.gov (United States)

    Minguet, Fernando; Salgado, Teresa M; van den Boogerd, Lucienne; Fernandez-Llimos, Fernando

    2015-01-01

    The Medical Subject Headings (MeSH) is the National Library of Medicine (NLM) controlled vocabulary for indexing articles. Inaccuracies in the MeSH thesaurus have been reported for several areas including pharmacy. To assess the quality of pharmacy-specific MeSH assignment to articles indexed in pharmacy journals. The 10 journals containing the highest number of articles published in 2012 indexed under the MeSH 'Pharmacists' were identified. All articles published over a 5-year period (2008-2012) in the 10 previously selected journals were retrieved from PubMed. MeSH terms used to index these articles were extracted and pharmacy-specific MeSH terms were identified. The frequency of use of pharmacy-specific MeSH terms was calculated across journals. A total of 6989 articles were retrieved from the 10 pharmacy journals, of which 328 (4.7%) were articles not fully indexed and therefore did not contain any MeSH terms assigned. Among the 6661 articles fully indexed, the mean number of MeSH terms was 10.1 (SD = 4.0), being 1.0 (SD = 1.3) considered as Major MeSH. Both values significantly varied across journals. The mean number of pharmacy-specific MeSH terms per article was 0.9 (SD = 1.2). A total of 3490 (52.4%) of the 6661 articles were indexed in pharmacy journals without a single pharmacy-specific MeSH. Of the total 67193 MeSH terms assigned to articles, on average 10.5% (SD = 13.9) were pharmacy-specific MeSH. A statistically significant different pattern of pharmacy-specific MeSH assignment was identified across journals (Kruskal-Wallis P MeSH terms to articles indexed in pharmacy journals can be improved to further enhance evidence gathering in pharmacy. Over half of the articles published in the top-10 journals publishing pharmacy literature were indexed without a single pharmacy-specific MeSH. Copyright © 2015 Elsevier Inc. All rights reserved.

  9. Relationships among head posture, pain intensity, disability and deep cervical flexor muscle performance in subjects with postural neck pain

    Directory of Open Access Journals (Sweden)

    Arun V. Subbarayalu, PhD

    2017-12-01

    Full Text Available Objectives: Information Technology (IT professionals working with computers gradually develop forward head posture and, as a result, these professionals are susceptible to several neck disorders. This study intended to reveal the relationships between pain intensity, disability, head posture and deep cervical flexor (DCF muscle performance in patients with postural neck pain. Methods: A cross-sectional study was conducted on 84 IT professionals who were diagnosed with postural neck pain. The participants were recruited with a random sampling approach. A Visual Analogue Scale (VAS, the Northwick Park Neck Pain Questionnaire (NPQ, the Modified Head Posture Spinal Curvature Instrument (MHPSCI, and the Stabilizer Pressure Biofeedback Unit were used to measure neck pain intensity, neck disability, head posture, and DCF muscle performance, respectively. Results: The Pearson correlation coefficient revealed a significantly strong positive relationship between the VAS and the NPQ (r = 0.734. The cranio-vertebral (CV angle was found to have a significantly negative correlation with the VAS (r = −0.536 and a weak negative correlation with the NPQ (r = −0.389. Conclusion: This study concluded that a smaller CV angle corresponded to greater neck pain intensity and disability. Furthermore, there is no significant relationship between CV angle and DCF muscle performance, indicating that head posture re-education through postural correction exercises would not completely correct the motor control deficits in DCF muscles. In addition, a suitable exercise regimen that exclusively targets the deep cervical flexor muscle to improve its endurance is warranted. Keywords: Craniovertebral angle, Disability deep cervical flexors muscle performance, Head posture, Postural neck pain

  10. Global visibility for global health: Is it time for a new descriptor in Medical Subject Heading (MeSH of MEDLINE/PubMed?

    Directory of Open Access Journals (Sweden)

    Ana Marušic´

    2013-06-01

    Full Text Available Despite a large body of research in global health (almost 9000 articles published in PubMed until 2012, the term “global health” is not included in the Medical Subject Headings (MeSH of the NLM – its controlled vocabulary thesaurus which NLM uses to index articles in MEDL INE. There are only 6 journals currently covered by PubMed which specialize in global health, including Journal of Global Health.

  11. A Remote-Controlled Airbag Device Can Improve Upper Airway Collapsibility by Producing Head Elevation With Jaw Closure in Normal Subjects Under Propofol Anesthesia.

    Science.gov (United States)

    Ishizaka, Satoru; Moromugi, Shunji; Kobayashi, Masato; Kajihara, Hiroki; Koga, Kazuya; Sugahara, Hirofumi; Ishimatsu, Takakazu; Kurata, Shinji; Kirkness, Jason P; Oi, Kumiko; Ayuse, Takao

    2014-01-01

    Continuous maintenance of an appropriate position of the mandible and head purely by manual manipulation is difficult, although the maneuver can restore airway patency during sleep and anesthesia. The aim of this paper was to examine the effect of head elevation with jaw closure using a remote-controlled airbag device, such as the airbag system, on passive upper airway collapsibility during propofol anesthesia. Seven male subjects were studied. Propofol infusion was used for anesthesia induction and maintenance, with a target blood propofol concentration of 1.5-2 [Formula: see text]g/ml. Nasal mask pressure ([Formula: see text]) was intermittently reduced to evaluate upper airway collapsibility (passive [Formula: see text]) and upstream resistance ([Formula: see text]) at three different head and jaw positions, jaw opening position in the supine position, jaw opening position in the sniffing position with 6-cm head elevation, and jaw closure at a 6-cm height sniffing position. The 6-cm height sniffing position with jaw closure was achieved by an airbag device that was attached to the subject's head-like headgear. Patient demographics, [Formula: see text] and [Formula: see text] in each condition were compared using one-way ANOVA with a post hoc Tukey test. [Formula: see text] was considered significant. We also confirmed the effects of our airbag device on improvement of upper airway collapsibility in three obstructive sleep apnea patients in a clinical study. The combination of 6-cm head elevation with jaw closure using the air-inflatable robotic airbag system decreased upper airway collapsibility ([Formula: see text]-cm H[Formula: see text]O) compared with the baseline position ([Formula: see text]-cm H[Formula: see text]O, [Formula: see text]). In the clinical study, there was improvement of upper airway obstruction in sleep apnea patients, including decreased apnea and hypopnea duration and increased the lowest level of oxygen saturation. We demonstrated that

  12. Effects of repeated snowboard exercise in virtual reality with time lags of visual scene behind body rotation on head stability and subjective slalom run performance in healthy young subjects.

    Science.gov (United States)

    Wada, Yoshiro; Nishiike, Suetaka; Kitahara, Tadashi; Yamanaka, Toshiaki; Imai, Takao; Ito, Taeko; Sato, Go; Matsuda, Kazunori; Kitamura, Yoshiaki; Takeda, Noriaki

    2016-11-01

    After repeated snowboard exercises in the virtual reality (VR) world with increasing time lags in trials 3-8, it is suggested that the adaptation to repeated visual-vestibulosomatosensory conflict in the VR world improved dynamic posture control and motor performance in the real world without the development of motion sickness. The VR technology was used and the effects of repeated snowboard exercise examined in the VR world with time lags between visual scene and body rotation on the head stability and slalom run performance during exercise in healthy subjects. Forty-two healthy young subjects participated in the study. After trials 1 and 2 of snowboard exercise in the VR world without time lag, trials 3-8 were conducted with 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6 s time lags of the visual scene that the computer creates behind board rotation, respectively. Finally, trial 9 was conducted without time lag. Head linear accelerations and subjective slalom run performance were evaluated. The standard deviations of head linear accelerations in inter-aural direction were significantly increased in trial 8, with a time lag of 0.6 s, but significantly decreased in trial 9 without a time lag, compared with those in trial 2 without a time lag. The subjective scores of slalom run performance were significantly decreased in trial 8, with a time lag of 0.6 s, but significantly increased in trial 9 without a time lag, compared with those in trial 2 without a time lag. Motion sickness was not induced in any subjects.

  13. List-Mode PET Motion Correction Using Markerless Head Tracking: Proof-of-Concept With Scans of Human Subject

    DEFF Research Database (Denmark)

    Olesen, Oline Vinter; Sullivan, Jenna M.; Mulnix, Tim

    2013-01-01

    was time-varying with long drift motions of up to 18 mm and regular step-wise motion of 1–6 mm. The evaluated measures were significantly better for motion-corrected images compared to no MC. The demonstrated system agreed with a commercial integrated system. Motion-corrected images were improved......A custom designed markerless tracking system was demonstrated to be applicable for positron emission tomography (PET) brain imaging. Precise head motion registration is crucial for accurate motion correction (MC) in PET imaging. State-of-the-art tracking systems applied with PET brain imaging rely...... on markers attached to the patient's head. The marker attachment is the main weakness of these systems. A healthy volunteer participating in a cigarette smoking study to image dopamine release was scanned twice for 2 h with $^{11}{\\rm C}$-racolopride on the high resolution research tomograph (HRRT) PET...

  14. Alcohol-associated acute head trauma in human subjects is associated with early deficits in serum ionized Mg and Ca.

    Science.gov (United States)

    Altura, B M; Memon, Z S; Altura, B T; Cracco, R Q

    1995-01-01

    Acute head trauma (AHT) (caused by motor vehicle accidents that did not produce loss of consciousness or observed brain lesions on CT scan, or falls) was found to result in early (1-8 h after injury) serum deficits in ionized magnesium (IMg2+) and ionized calcium (ICa2+) assessed with ion-selective electrodes (ISEs). Total Mg (TMg) and other electrolytes as well as serum biochemical analytes were all within the normal reference ranges. AHT patients with acute alcohol intoxication (BAC > or = 150 mg/dl) or alcohol abuse (BAC > 200 mg/dl) demonstrated deficits (15-35% less than normal) in IMg2+, but serum TMg levels were normal as were electrolytes and serum biochemical analytes. AHT patients with alcohol intoxication or alcohol abuse required hospitalization for 1-3 days prior to release, whereas AHT patients without alcohol intoxication were released in less than 24 h. The ICa2+/IMg2+ ratio, a sign of increased vascular tone and vascular reactivity, was significantly elevated in AHT patients with alcohol intoxication but not in AHT patients without alcohol intoxication or abuse. These serum divalent cation changes early after traumatic brain injury could be of considerable practicable diagnostic value in the assessment of alcohol-associated head injury. Use of ion-selective electrodes to accurately measure IMg2+ could serve as a logical basis for monitoring the response of the body to AHT.

  15. Development and validation of a numerical model of the swine head subjected to open-field blasts

    Science.gov (United States)

    Kalra, A.; Zhu, F.; Feng, K.; Saif, T.; Kallakuri, S.; Jin, X.; Yang, K.; King, A.

    2017-11-01

    A finite element model of the head of a 55-kg Yucatan pig was developed to calculate the incident pressure and corresponding intracranial pressure due to the explosion of 8 lb (3.63 kg) of C4 at three different distances. The results from the model were validated by comparing findings with experimentally obtained data from five pigs at three different blast overpressure levels: low (150 kPa), medium (275 kPa), and high (400 kPa). The peak values of intracranial pressures from numerical model at different locations of the brain such as the frontal, central, left temporal, right temporal, parietal, and occipital regions were compared with experimental values. The model was able to predict the peak pressure with reasonable percentage differences. The differences for peak incident and intracranial pressure values between the simulation results and the experimental values were found to be less than 2.2 and 29.3%, respectively, at all locations other than the frontal region. Additionally, a series of parametric studies shows that the intracranial pressure was very sensitive to sensor locations, the presence of air bubbles, and reflections experienced during the experiments. Further efforts will be undertaken to correlate the different biomechanical response parameters, such as the intracranial pressure gradient, stress, and strain results obtained from the validated model with injured brain locations once the histology data become available.

  16. Objective and subjective image quality of primary and recurrent squamous cell carcinoma on head and neck low-tube-voltage 80-kVp computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Scholtz, Jan-Erik; Kaup, Moritz; Kraft, Johannes; Noeske, Eva-Maria; Schulz, Boris; Burck, Iris; Kerl, J.M.; Bauer, Ralf W.; Lehnert, Thomas; Vogl, Thomas J.; Wichmann, Julian L. [University Hospital Frankfurt, Department of Diagnostic and Interventional Radiology, Frankfurt (Germany); Scheerer, Friedrich [University Hospital Frankfurt, Department of Cranio-Maxillofacial and Plastic Facial Surgery, Frankfurt (Germany); Wagenblast, Jens [University Hospital Frankfurt, Department of Otolaryngology, Head and Neck Surgery, Frankfurt (Germany)

    2015-03-26

    To investigate low-tube-voltage 80-kVp computed tomography (CT) of head and neck primary and recurrent squamous cell carcinoma (SCC) regarding objective and subjective image quality. We retrospectively evaluated 65 patients (47 male, 18 female; mean age: 62.1 years) who underwent head and neck dual-energy CT (DECT) due to biopsy-proven primary (n = 50) or recurrent (n = 15) SCC. Eighty peak kilovoltage and standard blended 120-kVp images were compared. Attenuation and noise of malignancy and various soft tissue structures were measured. Tumor signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. Subjective image quality was rated by three reviewers using 5-point grading scales regarding overall image quality, lesion delineation, image sharpness, and image noise. Radiation dose was assessed as CT dose index volume (CTDI{sub vol}). Interobserver agreement was calculated using intraclass correlation coefficient (ICC). Mean tumor attenuation (153.8 Hounsfield unit (HU) vs. 97.1 HU), SNR (10.7 vs. 8.3), CNR (8.1 vs. 4.8), and subjective tumor delineation (score, 4.46 vs. 4.13) were significantly increased (all P < 0.001) with 80-kVp acquisition compared to standard blended 120-kVp images. Noise of all measured structures was increased in 80-kVp acquisition (P < 0.001). Overall interobserver agreement was good (ICC, 0.86; 95 % confidence intervals: 0.82-0.89). CTDI{sub vol} was reduced by 48.7 % with 80-kVp acquisition compared to standard DECT (4.85 ± 0.51 vs. 9.94 ± 0.81 mGy cm, P < 0.001). Head and neck CT with low-tube-voltage 80-kVp acquisition provides increased tumor delineation, SNR, and CNR for CT imaging of primary and recurrent SCC compared to standard 120-kVp acquisition with an accompanying significant reduction of radiation exposure. (orig.)

  17. Survey of keyword adjustment of published articles medical subject headings in journal of mazandaran university of medical sciences (2009-2010).

    Science.gov (United States)

    Kabirzadeh, Azar; Siamian, Hasan; Abadi, Ebrahim Bagherian Farah; Saravi, Benyamin Mohseni

    2013-01-01

    NONE DECLARED. Keywords are the most important tools for Information retrieval. They are usually used for retrieval of articles based on contents of information reserved from printed and electronic resources. Retrieval of appropriate keywords from Medical Subject Headings (MeSH) can impact with exact, correctness and short time on information retrieval. Regarding the above mentioned matters, this study was done to compare the Latin keywords was in the articles published in the Journal of Mazandaran University of Medical Sciences. This is a descriptive study. The data were extracted from the key words of Englsih abstracts of articles published in the years 2009-2010 in the Journal of Mazandaran University of Medical Sciences by census method. Checklist of data collection is designed, based on research objectives and literature review which has face validity. Compliance rate in this study was to determine if the keywords cited in this article as a full subject of the main subject headings in a MeSH (Bold and the selected word) is a perfect adjustment. If keywords were cited in the article but the main heading is not discussed in the following main topics to be discussed with reference to See and See related it has considered has partial adjustment. Out of 148 articles published in 12 issues in proposed time of studying, 72 research papers were analyzed. The average numbers of authors in each article were 4 ± 1. Results showed that most of specialty papers 42 (58. 4%), belonging to the (Department of Clinical Sciences) School of Medicine, 11 (15.3%) Basic Science, 6(8.4%) Pharmacy, Nursing and Midwifery 5(6.9%), 4(5.5%) Health, paramedical Sciences 3(4.2%), and non medical article 1(1.3%) school of medicine. In general, results showed that 80 (30%) of key words have been used to complete the adjustment. Also, only 1(1.4%) had complete adjustment with all the MeSH key words and in 8 articles(11.4%) key words of had no adjustment with MeSH. The results showed that only

  18. Scored Patient-Generated Subjective Global Assessment, albumin and transferrin for nutritional assessment of gastrostomy fed head or neck cancer patients.

    Science.gov (United States)

    Correira Pereira, Marta Alexandra; Santos, Carla Adriana; Almeida Brito, José; Fonseca, Jorge

    2014-02-01

    Gastrostomy fed head or neck cancer patients frequently have impaired speech capacities. Enteral feeding teams frequently depend on laboratorial or anthropometrical parameters for nutritional assessment. In these patients, this study aimed to evaluate: (1) the practicability of Scored - Patient-Generated Subjective Global Assessment (PG-SGA); (2) their nutritional status using the Scored-PG-SGA; (3) association of serum albumin and transferrin values to the nutritional status rating using PG-SGA. On adult outpatients with head or neck cancer under prolonged (> 1 month) gastrostomy feeding, Scored-PGSGA, albumin and transferrin were evaluated during the same appointment. Scored-PG-SGA was easily feasible in 42 patients, even in patients with speech difficulties. Twenty-five patients were moderately/severely undernourished (PG-SGA/B+C). Scored-PG-SGA rated 41 patients as ≥ 2, thus needing nutritional/ pharmacologic intervention. Albumin was low in 13 patients. Transferrin was low in 19 patients. Average albumin and transferrin in moderately/severely undernourished patients (PG-SGA/B+C) was significantly lower than in well-nourished (PG-SGA/A). There was association between Scored- PG-SGA rating, albumin and transferrin. In PEG fed head or neck cancer patients, PGSGA was practicable and useful, even in patients with impaired speaking skills. Most patients displayed moderate/severe malnutrition (PG-SGA/B+C). Scored-PG-SGA rated 41 patients as needing for nutritional/pharmacological intervention. Scored-PG-SGA should be systematically included in the evaluation of these patients. In these patients, albumin and transferrin levels showed relation with Scored-PG-SGA and should be considered as nutritional biomarkers. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

  19. Incidence of head and neck squamous cell carcinoma among subjects at high risk of lung cancer: results from the Pittsburgh Lung Screening Study.

    Science.gov (United States)

    Dixit, Ronak; Weissfeld, Joel L; Wilson, David O; Balogh, Paula; Sufka, Pamela; Siegfried, Jill M; Grandis, Jennifer R; Diergaarde, Brenda

    2015-05-01

    Earlier detection and diagnosis of head and neck squamous cell carcinoma (HNSCC) should lead to improved outcomes. However, to the authors' knowledge, no effective screening strategy has been identified to date. In the current study, the authors evaluated whether it would be useful to screen subjects targeted for lung cancer screening for HNSCC as well. Medical records, death certificates, and cancer registry and questionnaire data were used to determine the number of observed incident HNSCC cases in the Pittsburgh Lung Screening Study (PLuSS), a cohort of current and former smokers aged ≥50 years with a ≥12.5 pack-year smoking history. The expected number of cases was estimated using stratum-specific incidence rates obtained from Surveillance, Epidemiology, and End Results data for 2000 through 2011. The standardized incidence ratio was calculated to examine the difference between the observed and expected number of cases. Of the 3587 at-risk participants in the PLuSS, 23 (0.64%) developed HNSCC over a total of 32,201 person-years of follow-up. This finding was significantly higher than expected based on incidence rates obtained from the Surveillance, Epidemiology, and End Results program (13.70 cases expected; standardized incidence ratio, 1.68 [95% confidence interval, 1.06-2.52]). The excess burden of HNSCC in the PLuSS was 28.9 cases per 100,000 person-years. Observed incident cases were significantly more often male, had started smoking at a younger age, smoked more per day, and had more pack-years of smoking than the rest of the PLuSS at-risk participants. The results of the current study provide a rationale for offering head and neck cancer screening along with computed tomography screening for lung cancer. Randomized controlled trials that assess the effectiveness of adding examination of the head and neck area to lung cancer screening programs are warranted. © 2015 American Cancer Society.

  20. Volume-averaged SAR in adult and child head models when using mobile phones: a computational study with detailed CAD-based models of commercial mobile phones.

    Science.gov (United States)

    Keshvari, Jafar; Heikkilä, Teemu

    2011-12-01

    Previous studies comparing SAR difference in the head of children and adults used highly simplified generic models or half-wave dipole antennas. The objective of this study was to investigate the SAR difference in the head of children and adults using realistic EMF sources based on CAD models of commercial mobile phones. Four MRI-based head phantoms were used in the study. CAD models of Nokia 8310 and 6630 mobile phones were used as exposure sources. Commercially available FDTD software was used for the SAR calculations. SAR values were simulated at frequencies 900 MHz and 1747 MHz for Nokia 8310, and 900 MHz, 1747 MHz and 1950 MHz for Nokia 6630. The main finding of this study was that the SAR distribution/variation in the head models highly depends on the structure of the antenna and phone model, which suggests that the type of the exposure source is the main parameter in EMF exposure studies to be focused on. Although the previous findings regarding significant role of the anatomy of the head, phone position, frequency, local tissue inhomogeneity and tissue composition specifically in the exposed area on SAR difference were confirmed, the SAR values and SAR distributions caused by generic source models cannot be extrapolated to the real device exposures. The general conclusion is that from a volume averaged SAR point of view, no systematic differences between child and adult heads were found. Copyright © 2011. Published by Elsevier Ltd.

  1. Experimental Investigation of Cavitation as a Possible Damage Mechanism in Blast-Induced Traumatic Brain Injury in Post-Mortem Human Subject Heads.

    Science.gov (United States)

    Salzar, Robert S; Treichler, Derrick; Wardlaw, Andrew; Weiss, Greg; Goeller, Jacques

    2017-04-15

    The potential of blast-induced traumatic brain injury from the mechanism of localized cavitation of the cerebrospinal fluid (CSF) is investigated. While the mechanism and criteria for non-impact blast-induced traumatic brain injury is still unknown, this study demonstrates that local cavitation in the CSF layer of the cranial volume could contribute to these injuries. The cranial contents of three post-mortem human subject (PMHS) heads were replaced with both a normal saline solution and a ballistic gel mixture with a simulated CSF layer. Each were instrumented with multiple pressure transducers and placed inside identical shock tubes at two different research facilities. Sensor data indicates that cavitation may have occurred in the PMHS models at pressure levels below those for a 50% risk of blast lung injury. This study points to skull flexion, the result of the shock wave on the front of the skull leading to a negative pressure in the contrecoup, as a possible mechanism that contributes to the onset of cavitation. Based on observation of intracranial pressure transducer data from the PMHS model, cavitation onset is thought to occur from approximately a 140 kPa head-on incident blast.

  2. Reduced Sympathetic Response to Head-Up Tilt in Subjects with Mild Cognitive Impairment or Mild Alzheimer's Dementia

    Directory of Open Access Journals (Sweden)

    Marte Rognstad Mellingsæter

    2015-03-01

    Full Text Available Background: Hemodynamic control was compared in patients with mild cognitive impairment (MCI or mild Alzheimer's dementia (AD as well as in healthy elderly subjects. Methods: Noninvasive, continuous hemodynamic recordings were obtained from 14 patients and 48 controls during supine rest (tilt of 30 and 70°. Cardiac output, end-diastolic volume, total peripheral resistance, heart rate variability (HRV, systolic blood pressure variability (SBPV, and baroreceptor sensitivity were calculated. Results: At 70° tilt, the HRV indices differed significantly, with higher high-frequency (HF variability as well as lower low-frequency (LF variability and LF/HF ratios in the patients. The patients had significantly lower SBPV in the LF range at 30° tilt. Conclusions: The results indicate a poorer sympathetic response to orthostatic stress in MCI and mild AD.

  3. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on head ...

  4. Analysis by NASA's VESGEN Software of Retinal Blood Vessels in Human Subjects Undergoing Head-Down Tilt During 70-Day Bed Rest

    Science.gov (United States)

    Vyas, Ruchi J.; Murray, Matthew C.; Predovic, Marina; Lim, Shiyin; Askin, Kayleigh N.; Vizzeri, Gianmarco; Taibbi, Giovanni; Mason, Sara Stroble; Zanello, Susana B.; Young, Millenia; hide

    2017-01-01

    Significant risks for visual impairment associated with increased intracranial pressure (VIIP) are incurred by microgravity spaceflight, especially long-duration missions [1]. We hypothesize that microgravity-induced fluid shifts result in pathological changes within blood vessels of the retina that precede development of visual and other ocular impairments. Potential contributions of retinal vascular remodeling to VIIP etiology are therefore being investigated for two studies in 30deg infrared (IR) Heidelberg Spectralis(Registered Trademark) images with NASA's innovative VESsel GENeration Analysis (VESGEN) software [2,3]. The retrospective studies include: (1) before, during and after (pre, mid and post) 6º head-down tilt (HDT) in human subjects during 70 days of bed rest, and (2) before and after missions to the International Space Station (ISS) by U.S. crew members. Results for both studies are almost complete. A preliminary example for HDT is described below.

  5. Citation Analysis using the Medline Database at the Web of Knowledge: Searching "Times Cited" with Medical Subject Headings (MeSH)

    CERN Document Server

    Leydesdorff, Loet

    2012-01-01

    Citation analysis of documents retrieved from the Medline database (at the Web of Knowledge) has been possible only on a case-by-case basis. A technique is here developed for citation analysis in batch mode using both Medical Subject Headings (MeSH) at the Web of Knowledge and the Science Citation Index at the Web of Science. This freeware routine is applied to the case of "Brugada Syndrome," a specific disease and field of research (since 1992). The journals containing these publications are attributed to Web-of-Science Categories other than "Cardiac and Cardiovascular Systems"), perhaps because of the possibility of genetic testing for this syndrome in the clinic. With this routine, all the instruments available for citation analysis can be used on the basis of MeSH terms.

  6. Head Start.

    Science.gov (United States)

    Greenman, Geri

    2000-01-01

    Discusses an art project in which students created drawings of mop heads. Explains that the approach of drawing was more important than the subject. States that the students used the chiaroscuro technique, used by Rembrandt and Caravaggio, in which light appears out of the darkness. (CMK)

  7. Compensating for literature annotation bias when predicting novel drug-disease relationships through Medical Subject Heading Over-representation Profile (MeSHOP) similarity.

    Science.gov (United States)

    Cheung, Warren A; Ouellette, B F Francis; Wasserman, Wyeth W

    2013-01-01

    Using annotations to the articles in MEDLINE®/PubMed®, over six thousand chemical compounds with pharmacological actions have been tracked since 1996. Medical Subject Heading Over-representation Profiles (MeSHOPs) quantitatively leverage the literature associated with biological entities such as diseases or drugs, providing the opportunity to reposition known compounds towards novel disease applications. A MeSHOP is constructed by counting the number of times each medical subject term is assigned to an entity-related research publication in the MEDLINE database and calculating the significance of the count by comparing against the count of the term in a background set of publications. Based on the expectation that drugs suitable for treatment of a disease (or disease symptom) will have similar annotation properties to the disease, we successfully predict drug-disease associations by comparing MeSHOPs of diseases and drugs. The MeSHOP comparison approach delivers an 11% improvement over bibliometric baselines. However, novel drug-disease associations are observed to be biased towards drugs and diseases with more publications. To account for the annotation biases, a correction procedure is introduced and evaluated. By explicitly accounting for the annotation bias, unexpectedly similar drug-disease pairs are highlighted as candidates for drug repositioning research. MeSHOPs are shown to provide a literature-supported perspective for discovery of new links between drugs and diseases based on pre-existing knowledge.

  8. Cited references and Medical Subject Headings (MeSH) as two different knowledge representations: clustering and mappings at the paper level.

    Science.gov (United States)

    Leydesdorff, Loet; Comins, Jordan A; Sorensen, Aaron A; Bornmann, Lutz; Hellsten, Iina

    2016-01-01

    For the biomedical sciences, the Medical Subject Headings (MeSH) make available a rich feature which cannot currently be merged properly with widely used citing/cited data. Here, we provide methods and routines that make MeSH terms amenable to broader usage in the study of science indicators: using Web-of-Science (WoS) data, one can generate the matrix of citing versus cited documents; using PubMed/MEDLINE data, a matrix of the citing documents versus MeSH terms can be generated analogously. The two matrices can also be reorganized into a 2-mode matrix of MeSH terms versus cited references. Using the abbreviated journal names in the references, one can, for example, address the question whether MeSH terms can be used as an alternative to WoS Subject Categories for the purpose of normalizing citation data. We explore the applicability of the routines in the case of a research program about the amyloid cascade hypothesis in Alzheimer's disease. One conclusion is that referenced journals provide archival structures, whereas MeSH terms indicate mainly variation (including novelty) at the research front. Furthermore, we explore the option of using the citing/cited matrix for main-path analysis as a by-product of the software.

  9. Tesauros y listas de epígrafes: ¿hacia una integración? Thesauri and list of subject headings: towards an integration?

    Directory of Open Access Journals (Sweden)

    Ana María Martínez

    2003-12-01

    Full Text Available Se analizan las semejanzas y diferencias entre los tesauros y las listas de epígrafes, tomando en cuenta el plan de revisión 2003 de la norma estadounidense Z39.19. Esta norma pretende establecer nuevas directrices para todo tipo de vocabulario controlado, en relación con su utilización con nuevas tecnologías. Se concluye que, en efecto, es muy importante revisar toda la normativa referida a los vocabularios controlados, particularmente las de alcance internacional, pero al mismo tiempo se hace necesario tener sumo cuidado en mantener un riguroso control de la terminología, una correcta definición de las relaciones jerárquicas y asociativas y promover la poscoordinación gestionada, en lo posible, mediante sistemas facetados y computarizados.The similarities and differences between thesauri and the lists of subject headings are analyzed, taking into account the work plan for the 2003 revision of the US standard Z39.19. This standard pretends to establish new guidelines for all types of controlled vocabulary in relation to their use with new technologies. We conclude that it is very important to review all the standards for controlled vocabulary, particularly those with international scope, but at the same time, it is necessary to be very careful in maintaining a rigorous control of terminology; a correct definition of hierarchical and associative relationships, and to promote the postcordination, managed, if possible, in faceted and computerized systems.

  10. A data mining approach to selecting herbs with similar efficacy: Targeted selection methods based on medical subject headings (MeSH).

    Science.gov (United States)

    Yea, Sang-Jun; Seong, BoSeok; Jang, Yunji; Kim, Chul

    2016-04-22

    Natural products have long been the most important source of ingredients in the discovery of new drugs. Moreover, since the Nagoya Protocol, finding alternative herbs with similar efficacy in traditional medicine has become a very important issue. Although random selection is a common method of finding ethno-medicinal herbs of similar efficacy, it proved to be less effective; therefore, this paper proposes a novel targeted selection method using data mining approaches in the MEDLINE database in order to identify and select herbs with a similar degree of efficacy. From among sixteen categories of medical subject headings (MeSH) descriptors, three categories containing terms related to herbal compounds, efficacy, toxicity, and the metabolic process were selected. In order to select herbs of similar efficacy in a targeted way, we adopted the similarity measurement method based on MeSH. In order to evaluate the proposed algorithm, we built up three different validation datasets which contain lists of original herbs and corresponding medicinal herbs of similar efficacy. The average area under curve (AUC) of the proposed algorithm was found to be about 500% larger than the random selection method. We found that the proposed algorithm puts more hits at the front of the top-10 list than the random selection method, and precisely discerns the efficacy of the herbs. It was also found that the AUC of the experiments either remained the same or increased slightly in all three validation datasets as the search range was increased. This study reveals and proves that the proposed algorithm is significantly more accurate and efficient in finding alternative herbs of similar efficacy than the random selection method. As such, it is hoped that this approach will be used in diverse applications in the ethno-pharmacology field. Copyright © 2016 The Authors. Published by Elsevier Ireland Ltd.. All rights reserved.

  11. Using MeSH (medical subject headings) to enhance PubMed search strategies for evidence-based practice in physical therapy.

    Science.gov (United States)

    Richter, Randy R; Austin, Tricia M

    2012-01-01

    Evidence-based practice (EBP) is an important paradigm in health care. Physical therapists report lack of knowledge and time constraints as barriers to EBP. The purpose of this technical report is to illustrate how Medical Subject Headings (MeSH), a controlled vocabulary thesaurus of indexing terms, is used to efficiently search MEDLINE, the largest component of PubMed. Using clinical questions, this report illustrates how search terms common to physical therapist practice do or do not map to appropriate MeSH terms. A PubMed search strategy that takes advantage of text words and MeSH terms is provided. A search of 139 terms and 13 acronyms was conducted to determine whether they appropriately mapped to a MeSH term. The search results were categorized into 1 of 5 outcomes. Nearly half (66/139) of the search terms mapped to an appropriate MeSH term (outcome 1). When a search term did not appropriately map to a MeSH term, it was entered into the MeSH database to search for an appropriate MeSH term. Twenty-one appropriate MeSH terms were found (outcomes 2 and 4), and there were 52 search terms for which an appropriate MeSH term was not found (outcomes 3 and 5). Nearly half of the acronyms did not map to an appropriate MeSH term, and an appropriate MeSH term was not found in the database. The results are based on a limited number of search terms and acronyms. Understanding how search terms map to MeSH terms and using the PubMed search strategy can enable physical therapists to take full advantage of available MeSH terms and should result in more-efficient and better-informed searches.

  12. Intracranial hemorrhage alters scalp potential distribution in bioimpedance cerebral monitoring: Preliminary results from FEM simulation on a realistic head model and human subjects.

    Science.gov (United States)

    Atefi, Seyed Reza; Seoane, Fernando; Kamalian, Shervin; Rosenthal, Eric S; Lev, Michael H; Bonmassar, Giorgio

    2016-02-01

    Current diagnostic neuroimaging for detection of intracranial hemorrhage (ICH) is limited to fixed scanners requiring patient transport and extensive infrastructure support. ICH diagnosis would therefore benefit from a portable diagnostic technology, such as electrical bioimpedance (EBI). Through simulations and patient observation, the authors assessed the influence of unilateral ICH hematomas on quasisymmetric scalp potential distributions in order to establish the feasibility of EBI technology as a potential tool for early diagnosis. Finite element method (FEM) simulations and experimental left-right hemispheric scalp potential differences of healthy and damaged brains were compared with respect to the asymmetry caused by ICH lesions on quasisymmetric scalp potential distributions. In numerical simulations, this asymmetry was measured at 25 kHz and visualized on the scalp as the normalized potential difference between the healthy and ICH damaged models. Proof-of-concept simulations were extended in a pilot study of experimental scalp potential measurements recorded between 0 and 50 kHz with the authors' custom-made bioimpedance spectrometer. Mean left-right scalp potential differences recorded from the frontal, central, and parietal brain regions of ten healthy control and six patients suffering from acute/subacute ICH were compared. The observed differences were measured at the 5% level of significance using the two-sample Welch t-test. The 3D-anatomically accurate FEM simulations showed that the normalized scalp potential difference between the damaged and healthy brain models is zero everywhere on the head surface, except in the vicinity of the lesion, where it can vary up to 5%. The authors' preliminary experimental results also confirmed that the left-right scalp potential difference in patients with ICH (e.g., 64 mV) is significantly larger than in healthy subjects (e.g., 20.8 mV; P potential distributions. Pilot clinical observations with the authors

  13. Head and Neck

    DEFF Research Database (Denmark)

    Højgaard, Liselotte; Berthelsen, Anne Kiil; Loft, Annika

    2014-01-01

    Positron emission tomography (PET)/computed tomography with FDG of the head and neck region is mainly used for the diagnosis of head and neck cancer, for staging, treatment evaluation, relapse, and planning of surgery and radio therapy. This article is a practical guide of imaging techniques......, including a detailed protocol for FDG PET in head and neck imaging, physiologic findings, and pitfalls in selected case stories....

  14. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... headaches, dizziness, and other symptoms of aneurysm, bleeding, stroke and brain tumors. It also helps your doctor ... scanning provides more detailed information on head injuries, stroke , brain tumors and other brain diseases than regular ...

  15. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on head injuries, stroke , brain tumors and other brain diseases than regular radiographs (x-rays). top of page ...

  16. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... and other symptoms of aneurysm, bleeding, stroke and brain tumors. It also helps your doctor to evaluate your ... provides more detailed information on head injuries, stroke , brain tumors and other brain diseases than regular radiographs (x- ...

  17. A Prediction of Response of the Head and Neck of the U.S. Adult Military Population to Dynamic Impact Acceleration from Selected Dynamic Test Subjects.

    Science.gov (United States)

    1976-05-01

    It noceeawy and )Aettfi O haack mombe) Dynamic Response of Head and Neck Physical Characteristics of Head and NecK Mathematical Model Simulationj...response of these volunteers to -Gx sled acca’eratioa at 6 and 15 G’s. Procedures used for comuting the various prameter vilues w-4 coeprisons between...may be used with . mathematical modeling techniques in order to extend and project the NAMRL dynamic response results to the general adult U.S

  18. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... of the head uses a powerful magnetic field, radio waves and a computer to produce detailed pictures ... medical conditions. MRI uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed ...

  19. Resting-state networks in healthy adult subjects: a comparison between a 32-element and an 8-element phased array head coil at 3.0 Tesla.

    Science.gov (United States)

    Paolini, Marco; Keeser, Daniel; Ingrisch, Michael; Werner, Natalie; Kindermann, Nicole; Reiser, Maximilian; Blautzik, Janusch

    2015-05-01

    Little research exists on the influence of a magnetic resonance imaging (MRI) head coil's channel count on measured resting-state functional connectivity. To compare a 32-element (32ch) and an 8-element (8ch) phased array head coil with respect to their potential to detect functional connectivity within resting-state networks. Twenty-six healthy adults (mean age, 21.7 years; SD, 2.1 years) underwent resting-state functional MRI at 3.0 Tesla with both coils using equal standard imaging parameters and a counterbalanced design. Independent component analysis (ICA) at different model orders and a dual regression approach were performed. Voxel-wise non-parametric statistical between-group contrasts were determined using permutation-based non-parametric inference. Phantom measurements demonstrated a generally higher image signal-to-noise ratio using the 32ch head coil. However, the results showed no significant differences between corresponding resting-state networks derived from both coils (p coil does not offer any significant advantages in detecting ICA-based functional connectivity within RSNs. © The Foundation Acta Radiologica 2015 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

  20. Effect of 1% Inspired CO2 During Head-Down Tilt on Ocular Structures, Cerebral Blood Flow, and Visual Acuity in Healthy Human Subjects

    Science.gov (United States)

    Laurie, S. S.; Hu, X.; Lee, S. M. C.; Martin, D. S.; Phillips, T. R.; Ploutz-Snyder, R.; Smith, S. M.; Stenger, M. B.; Taibbi, G.; Zwart, S. R.; hide

    2016-01-01

    The cephalad fluid shift induced by microgravity has been hypothesized to elevate intracranial pressure (ICP) and contribute to the development of the visual impairment/intracranial pressure (VIIP) syndrome experienced by many astronauts during and after long-duration space flight. In addition, elevated ambient partial pressure of carbon dioxide (PCO2) on the International Space Station (ISS) has also been hypothesized to contribute to the development of VIIP. We seek to determine if an acute, mild CO2 exposure, similar to that occurring on the ISS, combined with the cephalad fluid shift induced by head-down tilt will induce ophthalmic and ICP changes consistent with the VIIP syndrome.

  1. Author Details

    African Journals Online (AJOL)

    Acalculous cholecystitis in malaria: Complication or accomplice? Abstract PDF · Vol 11, No 2 (2014) - Articles Cordylobia Anthropophaga: Furuncular Myiasis in a Family of 3. Abstract PDF · Vol 12, No 1 (2015) - Articles Introduction of the Canadian CT Head Rule Reduces CT Scan Use in Minor Head Injury Abstract PDF.

  2. Author Details

    African Journals Online (AJOL)

    Language, History and Culture in Bessie Head's "a Question of Power", Toni Morrison's Beloved and Sembéne Ousmane's "Tribal Marks" Abstract · Vol 7, No 4 (2010) - Articles Language, History and Culture in Bessie Head's "A Question of Power", Toni Morrison's "Beloved" and Sembéne Ousmane's "Tribal Marks"

  3. Handy Key to Your "National Geographics": Subject and Picture Locater. 14th Edition, 1915-1979.

    Science.gov (United States)

    Underhill, Charles S., Comp.

    This subject guide to articles and illustrations appearing in the National Geographic over a 64 year period groups detailed topics under broader alphabetical headings. It is not an author or title index, and includes people only as featured subjects of articles. An abbreviation key is provided. (FM)

  4. Cam deformity and the omega angle, a novel quantitative measurement of femoral head-neck morphology: a 3D CT gender analysis in asymptomatic subjects

    Energy Technology Data Exchange (ETDEWEB)

    Mascarenhas, Vasco V.; Gaspar, Augusto [Hospital da Luz, MSK imaging Unit (UIME), Imaging Center, Lisbon (Portugal); Rego, Paulo [Hospital da Luz, Department of Orthopaedic Surgery, Lisbon (Portugal); Dantas, Pedro [Hospital CUF Descobertas, Lisbon (Portugal); Soldado, Francisco [Universitat de Barcelona, Hospital Sant Joan de Deu, Barcelona (Spain); Consciencia, Jose G. [NOVA Medical School, Lisbon (Portugal)

    2017-05-15

    Our objectives were to use 3D computed tomography (CT) to define head-neck morphologic gender-specific and normative parameters in asymptomatic individuals and use the omega angle (Ω ) to provide quantification data on the location and radial extension of a cam deformity. We prospectively included 350 individuals and evaluated 188 asymptomatic hips that underwent semiautomated CT analysis. Different thresholds of alpha angle (α ) were considered in order to analyze cam morphology and determine Ω . We calculated overall and gender-specific parameters for imaging signs of cam morphology (Ω and circumferential α ). The 95 % reference interval limits were beyond abnormal thresholds found in the literature for cam morphology. Specifically, α at 3/1 oclock were 46.9 /60.8 overall, 51.8 /65.4 for men and 45.7 /55.3 for women. Cam prevalence, magnitude, location, and epicenter were significantly gender different. Increasing α correlated with higher Ω , meaning that higher angles correspond to larger cam deformities. Hip morphometry measurements in this cohort of asymptomatic individuals extended beyond current thresholds used for the clinical diagnosis of cam deformity, and α was found to vary both by gender and measurement location. These results suggest that α measurement is insufficient for the diagnosis of cam deformity. Enhanced morphometric evaluation, including 3D imaging and Ω , may enable a more accurate diagnosis. (orig.)

  5. Enthesitis in patients with psoriatic arthritis, axial spondyloarthritis and healthy subjects assessed by ‘head-to-toe’ whole-body MRI and clinical examination

    DEFF Research Database (Denmark)

    Poggenborg, René Panduro; Eshed, Iris; Østergaard, Mikkel

    2015-01-01

    OBJECTIVES: To investigate the ability of whole-body MRI (WBMRI) to detect axial and peripheral enthesitis in patients with psoriatic arthritis (PsA) and axial spondyloarthritis (axSpA), and in healthy subjects (HS). Furthermore, to develop MRI enthesitis indices based on WBMRI and validate...... and patient global (ρ=0.29-0.31, pimaging modality for evaluation of enthesitis in patients with PsA and axSpA, but requires further investigation before clinical use....

  6. Characterizing the Vertical Distribution of Hydraulic Conductivity Using the Multilevel Slug Test Subject to Skin Effects: Comparison of the Uniform-head and Uniform-flux Wellbore Conditions

    Science.gov (United States)

    wei-Chiang, C.; Chen, C. S.

    2016-12-01

    The multilevel slug test (MLST) is an in-well technique in characterizing the vertical distribution of hydraulic conductivity K(z) in granular or fractured formations. In modeling MLST, the well screen is either simulated as a uniform-flux (UF) or a uniform head (UH) condition. This study investigates the impact of the skin effect, positive or negative, on the UH and UF models. The positive skin effect, as associated with a reduced hydraulic conductivity surrounding the well due to drilling mud invasion, is taken into account by making use of a skin factor, Sk.The negative skin effect, as associated with an increased hydraulic conductivity due to overdeveloping of the well, is modeled by using an effective well radius, re, which is greater than or equal to the well radius, rw. The UF and UH models are compared using different values of Sk and re for a variety of the partial penetration ratio of screen length to aquifer thickness, φ, the vertical anisotropy ratio of hydraulic conductivity, κ, and the aspect ratio of rw to the screen length, α. It is found that (1) the two models yield results of negligible difference when the well fully penetrates the aquifer (i.e., φ=1) regardless of the values of α,κ, Sk or re, (2) the two models yield essentially the same results for negative skin for all α and κ, (3) the difference between the two models decreases as Sk gets larger, regardless of the values of α, φ, or κ, yet it becomes negligible for Sk is greater than unity, and (4) when the skin effect is absent, the maximum difference between the two models is within 3-5%. As a result, it is suggested the UF model be used since it is mathematically easier to solve than the UH model, with or without skin effects.

  7. Ulnar head replacement.

    Science.gov (United States)

    Herbert, Timothy J; van Schoonhoven, Joerg

    2007-03-01

    Recent years have seen an increasing awareness of the anatomical and biomechanical significance of the distal radioulnar joint (DRUJ). With this has come a more critical approach to surgical management of DRUJ disorders and a realization that all forms of "excision arthroplasty" can only restore forearm rotation at the expense of forearm stability. This, in turn, has led to renewed interest in prosthetic replacement of the ulnar head, a procedure that had previously fallen into disrepute because of material failures with early implants, in particular, the Swanson silicone ulnar head replacement. In response to these early failures, a new prosthesis was developed in the early 1990s, using materials designed to withstand the loads across the DRUJ associated with normal functional use of the upper limb. Released onto the market in 1995 (Herbert ulnar head prosthesis), clinical experience during the last 10 years has shown that this prosthesis is able to restore forearm function after ulnar head excision and that the materials (ceramic head and noncemented titanium stem), even with normal use of the limb, are showing no signs of failure in the medium to long term. As experience with the use of an ulnar head prosthesis grows, so does its acceptance as a viable and attractive alternative to more traditional operations, such as the Darrach and Sauve-Kapandji procedures. This article discusses the current indications and contraindications for ulnar head replacement and details the surgical procedure, rehabilitation, and likely outcomes.

  8. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... a computer to produce detailed pictures of the brain and other cranial structures that are clearer and ... sensitive imaging test of the head (particularly the brain) in routine clinical practice. top of page What ...

  9. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... MRI) of the head uses a powerful magnetic field, radio waves and a computer to produce detailed ... there’s a possibility you are pregnant. The magnetic field is not harmful, but it may cause some ...

  10. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... the head uses a powerful magnetic field, radio waves and a computer to produce detailed pictures of ... the body being imaged, send and receive radio waves, producing signals that are detected by the coils. ...

  11. Author Details

    African Journals Online (AJOL)

    Infliximab (Revellex) inflammatory bowel disease: guidelines. Details · Vol 1, No 1 (2003) - Articles A case of nausea and vomiting: clinical case. Details · Vol 2, No 1 (2004) - Articles Infliximab (Revellex(R)): a promise fulfilled?: medicine in practice. Details · Vol 2, No 2 (2004) - Articles Microscopic colitis: an evolving ...

  12. Head Injuries

    Science.gov (United States)

    ... ATV) Safety Balance Disorders Knowing Your Child's Medical History First Aid: Falls First Aid: Head Injuries Preventing Children's Sports Injuries Getting Help: Know the Numbers Concussions Stay ...

  13. Author Details

    African Journals Online (AJOL)

    Shehu, BB. Vol 11, No 3 (2014) - Articles Knotting of a nasogastric feeding tube in a child with head injury: A case report and review of literature. Abstract. ISSN: 0189-6725. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms ...

  14. Author Details

    African Journals Online (AJOL)

    Yusuf, Mohammed. Vol 4, No 3 (2015) - Articles Supplementation of different level of corn silage with linseed meal on performance of black head Ogaden sheep fed grass hay. Abstract PDF. ISSN: 2305-3372. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More ...

  15. Author Details

    African Journals Online (AJOL)

    East African Medical Journal. ... Vol 83, No 2 (2006): - Articles Oral health status among Kenyans in a rural arid setting: dental caries experience and knowledge on its ... Abstract PDF · Vol 86, No 4 (2009) - Articles Morbidity And Quality Of Life Among Head And Neck Cancer Patients Treated With Radical Radiotherapy

  16. Author Details

    African Journals Online (AJOL)

    Ishola, A. A.. Vol 36, No 2 (2017) - Articles Optimised intake stroke analysis for flat and dome head pistons. Abstract PDF. ISSN: 2467-8821. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  17. Author Details

    African Journals Online (AJOL)

    Animut, Getachew. Vol 4, No 2 (2015) - Articles Effects of Different Feeding Regimes on Leather Quality of Finished Blackhead Ogaden Sheep Abstract PDF · Vol 4, No 3 (2015) - Articles Supplementation of different level of corn silage with linseed meal on performance of black head Ogaden sheep fed grass hay

  18. Author Details

    African Journals Online (AJOL)

    Manocha, KK. Vol 8, No 3 (2008) - Articles Gemcitabine concurrent with radiation therapy for locally advanced head and neck carcinomas. Abstract PDF. ISSN: 1680-6905. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms ...

  19. Author Details

    African Journals Online (AJOL)

    Kolawole, OF. Vol 18, No 2 (2014) - Articles Livelihood Diversification Sources of Female Household Heads in Rural Communities of Osun State Abstract PDF. ISSN: 2408-6851. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  20. Author Details

    African Journals Online (AJOL)

    Uledi-Kamanga, Brighton. Vol 1, No 1 (1987) - Articles Alienation and affirmation: The humanistic vision of Bessie Head Abstract PDF. ISSN: 1016-0728. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  1. Author Details

    African Journals Online (AJOL)

    Ajayi, N O. Vol 18, No 1 (2006) - Articles Variation in well-head gamma radiation levels at the Nigerian Petroleum Development Company oil field, Ologbo, Edo State, Nigeria Abstract PDF · Vol 18, No 1 (2006) - Articles Influence of X-Rays on some electrical properties of the bovine vitreous humour. Abstract PDF.

  2. Author Details

    African Journals Online (AJOL)

    Hageze, AJ. Vol 12, No 1 (2012) - Articles Impact of Income Poverty on Livelihood Strategies of Rural Households Headed by Physically Disabled Parents in Kigoma District Council, Tanzania. Abstract. ISSN: 2591 6831. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  3. Author Details

    African Journals Online (AJOL)

    Mkandawire, NC. Vol 15, No 1 (2003) - Articles Ankylosing spondylitis in a Malawian Abstract PDF · Vol 25, No 2 (2013) - Articles Avascular necrosis of the femoral head in HIV positive patients-an assessment of risk factors and early response to surgical treatment. Abstract PDF. ISSN: 1995-7262. AJOL African Journals ...

  4. Author Details

    African Journals Online (AJOL)

    Kamulegeya, LH. Vol 15, No 3 (2015) - Articles The scourge of head injury among commercial motorcycle riders in Kampala; a preventable clinical and public health menace. Abstract PDF. ISSN: 1680-6905. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More ...

  5. Author Details

    African Journals Online (AJOL)

    Abdulsalaam-sagir, P. Vol 34, No 4 (2015) - Agricultural, Bioresources, Biomedical, Food, Environmental & Water Resources Engineering Low Cost Constant – Head Drip Irrigation Emitter for Climate Change Adaptation in Nigeria: Engineering Design and Calibration Abstract PDF. ISSN: 2467-8821. AJOL African Journals ...

  6. Author Details

    African Journals Online (AJOL)

    Maushe, Francis. Vol 5, No 1 (2015) - Articles “We Are On Our Own”: Challenges facing child headed households (CHH), a case of Seke Rural Area in Zimbabwe Abstract PDF. ISSN: 2409-5605. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  7. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... the head uses a powerful magnetic field, radio waves and a computer to produce detailed pictures of the brain and other cranial structures that are clearer and more detailed than other imaging methods. This exam does not use ionizing radiation and may require an injection of a ...

  8. Author Details

    African Journals Online (AJOL)

    Tropical anaesthesia: effect on rehabilitation of spasticity in hemiplegic patients. Details · Vol 10, No 4 (2000) - Articles The effect of low intensity therapeutic ultrasound on fibroblast proliferation during the early stages of tendon healing. Details · Vol 18, No 2 (2008) - Articles Factors contributing to possession of walking aids ...

  9. Author Details

    African Journals Online (AJOL)

    Toworfe, G.K.. Vol 3, No 1 (2001): - Articles Time-dependent setting shrinkage of resin-based dental restorative biomaterials. Details · Vol 3, No 2 (2001): - Articles A review of resin-based and glass ionomer-based biomedical materials used in restorative dentistry. Details. ISSN: 0855-3823. AJOL African Journals Online.

  10. Author Details

    African Journals Online (AJOL)

    Molyneux, E. Vol 13, No 2 (2001) - Articles Quarterly clinic 'Cerebral malaria' Details · Vol 13, No 1 (2001) - Articles Editorials Einstein and the Health Service, e=mc2. Details · Vol 24, No 4 (2012) - Articles Tricuspid Endocarditis, in a 12 year old girl with a previously normal heart. Abstract PDF · Vol 25, No 4 (2013) - Articles

  11. Author Details

    African Journals Online (AJOL)

    Quashie-Sam, SJ. Vol 35, No 1 (2002) - Articles Evaluation of fuel wood quality of four tree species used for fish smoking in the Sene District of the Brong Ahafo Region of Ghana Details · Vol 35, No 1 (2002) - Articles Effect of fuel wood type on the quality of smoked fish - Chrysichthys auratus. Details. ISSN: 0855-0042.

  12. Author Details

    African Journals Online (AJOL)

    Author Details. Journal Home > Advanced Search > Author Details. Log in or Register to get access to ... Tree, Anthony J. Vol 86, No 1-2 (2015) - Articles The status of the Damara Tern in the Eastern Cape, South Africa § Abstract. ISSN: 0030-6525. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for ...

  13. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or Register to get ... No 1 (1998) - Articles Investigation on canopy features of three indigenous woodland tree species of Ethiopia Details PDF · Vol 22, No 2 (1999) - Articles Vegetation under different tree species in Acacia woodland in the Rift Valley of Ethiopia

  14. Author Details

    African Journals Online (AJOL)

    Titanji, Vincent PK. Vol 1, No 3 (2001) - Articles Editorial: Scientific and technological challenges facing Africa in the era of globalization. Details PDF · Vol 2, No 2 (2002) - Articles Editorial: Scientific Research Directions and Development Details · Vol 3, No 3 (2003) - Articles The role of basic sciences in development

  15. Author Details

    African Journals Online (AJOL)

    Adomako, B. Vol 3, No 1 (2001): - Articles The use of indices for early selection of high yielding cocoa (Theobroma cacao L.) Varieties Details · Vol 3, No 2 (2001): - Articles Effects of cocoa swollen-shoot virus on the yield of mature bearing trees of upper Amazon cocoa hybrids in Ghana Details. ISSN: 0855-3823.

  16. Author Details

    African Journals Online (AJOL)

    UDOSEN, E O. Vol 6, No 1 (2000) - Articles Chemical composition and soaping characteristics of peels from plantain (Musa paradisiaca) and banana (Musa sapientum). Details · Vol 6, No 3 (2000) - Articles Estimation of calcium, zinc, hydrocyanate, oxalate and phytate in Dioscorea bulbifera tuber. Details. ISSN: 1118-0579.

  17. Author Details

    African Journals Online (AJOL)

    Mshigeni, Keto. Vol 9, No 1 (1997) - Articles EDITORIAL Seawater-based Agriculture: Possibilities of Salicornia Cultivation in Africa's Coastal Village Communities Details · Vol 11, No 3 (1999) - Articles EDITORIAL Guest Editorial: Grow Your Own House From Grasses: Astounding Construction Material Details. ISSN: 1015- ...

  18. Author Details

    African Journals Online (AJOL)

    Owusu, G.K.. Vol 3, No 2 (2001): - Articles Effects of cocoa swollen-shoot virus on the yield of mature bearing trees of upper Amazon cocoa hybrids in Ghana Details · Vol 3, No 2 (2001): - Articles An alternative source for the extraction and purification of cocoa swollen shoot badnavirus (CSSV) Details. ISSN: 0855-3823.

  19. Author Details

    African Journals Online (AJOL)

    Author Details. Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... Simulation study of excitation functions for cyclotron production of 99mTc using TALYS code. Abstract. ISSN: 0855-2215. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for ...

  20. Author Details

    African Journals Online (AJOL)

    Ofori, K. Vol 3, No 1 (2001): - Articles Performance of food crops inter-cropped with oil palm. Details · Vol 3, No 2 (2001): - Articles Assessment of the potential of three leguminous cover crops for soil nitrogen improvement and weed control for young oil palm plantations. Details. ISSN: 0855-3823. AJOL African Journals ...

  1. Author Details

    African Journals Online (AJOL)

    Localised tetanus in Lagos, Nigeria Details · Vol 9, No 4 (1999) - Articles Stroke with localised infarction of Wernicke's Area misdiagnosed as psychosis. Details · Vol 18, No 1 (2008) - Articles The effect of tens on selected symptoms in the management of patients with chronic tension type headache: A preliminary study

  2. Author Details

    African Journals Online (AJOL)

    Author Details. Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... H.a. Welker and Pedagogical Lexicography Abstract PDF · Vol 21 (2011) - Articles Pedagogical Lexicography: Towards a New and Strict Typology Corresponding to the Present State-of-the-Art

  3. Author Details

    African Journals Online (AJOL)

    Author Details. Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... Okosun, Victor Abhiele. Vol 10, No 2 (2016) - Articles Pedagogical Insights into the Teaching of Public Administration in Tertiary Institutions in Nigeria Abstract PDF. ISSN: 2070-0083. AJOL African ...

  4. Author Details

    African Journals Online (AJOL)

    Author Details. Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... Davis, D. Vol 30, No 4 (2012) - Articles Teaching social justice: Reframing some common pedagogical assumptions. Abstract. ISSN: 0258-2236. AJOL African Journals Online. HOW TO USE AJOL.

  5. Author Details

    African Journals Online (AJOL)

    Author Details. Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... The Political Economy of Food Dependency in Nigeria Abstract PDF · Vol 10, No 2 (2016) - Articles Pedagogical Insights into the Teaching of Public Administration in Tertiary Institutions in Nigeria

  6. Author Details

    African Journals Online (AJOL)

    Odihi, John Onu. Vol 10, No 1 (1998) - Articles Escavation-Water Harvesting in Sudano-Sahelian Nigeria: Problems and Prospects Details · Vol 10, No 3 (1998) - Articles Excavation Water Harvesting in Sudano-Sahelian Nigeria: Problems and Prospects Details · Vol 11, No 1 (1999) - Articles REVIEWS Land Use and ...

  7. Author Details

    African Journals Online (AJOL)

    An Overview of Africa's Marine Resources: Their Utilization and Sustainable Management Details · Vol 12, No 3 (2000) - Articles EDITORIAL Ganoderma Lucidum - Paramount among Medicinal Mushrooms. Details · Vol 15, No 3 (2003) - Articles Editorial: Africa's Mushrooms: A neglected bioresource whose time has come

  8. Head Lice

    Science.gov (United States)

    ... 1044-1047. Canyon, DV, Speare R, et al . “Spatial and kinetic factors for the transfer of head ... for children. Natural products can give parents false sense of safety If using a natural product or ...

  9. Head First Statistics

    CERN Document Server

    Griffiths, Dawn

    2009-01-01

    Wouldn't it be great if there were a statistics book that made histograms, probability distributions, and chi square analysis more enjoyable than going to the dentist? Head First Statistics brings this typically dry subject to life, teaching you everything you want and need to know about statistics through engaging, interactive, and thought-provoking material, full of puzzles, stories, quizzes, visual aids, and real-world examples. Whether you're a student, a professional, or just curious about statistical analysis, Head First's brain-friendly formula helps you get a firm grasp of statistics

  10. Author Details

    African Journals Online (AJOL)

    Psophocarpus tetragonolobus (L.) DC) for nodulation and phenotypic performance. Details. ISSN: 0855-1448. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  11. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or Register to get ... Vol 3, No 1 (2012) - Articles Graphic Design and the Changing Nature of Communication Media: A Historical Perspective and Implications for Design Training

  12. Author Details

    African Journals Online (AJOL)

    Genetic parameter estimates for growth traits in purebred Gudali and two-breed synthetic Wakwa beef cattle in a tropical environment. Details PDF · Vol 4, ... Genetic modification: Natural selection, articifial selection and genetic engineering

  13. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or Register to get access to ... Bayoumi, R A. Vol 17 (2007) - Articles Isolation, purification, characterization, and physiological behavior of drinking water-borne pathogenic bacteria.

  14. Effect of external viscous load on head movement

    Science.gov (United States)

    Nam, M.-H.; Lakshminarayanan, V.; Stark, L. W.

    1984-01-01

    Quantitative measurements of horizontal head rotation were obtained from normal human subjects intending to make 'time optimal' trajectories between targets. By mounting large, lightweight vanes on the head, viscous damping B, up to 15 times normal could be added to the usual mechanical load of the head. With the added viscosity, the head trajectory was slowed and of larger duration (as expected) since fixed and maximal (for that amplitude) muscle forces had to accelerate the added viscous load. This decreased acceleration and velocity and longer duration movement still ensued in spite of adaptive compensation; this provided evidence that quasi-'time optimal' movements do indeed employ maximal muscle forces. The adaptation to this added load was rapid. Then the 'adapted state' subjects produced changed trajectories. The adaptation depended in part on the differing detailed instructions given to the subjects. This differential adaptation provided evidence for the existence of preprogrammed controller signals, sensitive to intended criterion, and neurologically ballistic or open loop rather than modified by feedback from proprioceptors or vision.

  15. Author Details

    African Journals Online (AJOL)

    Risby, M.S.. Vol 9, No 3S (2017): Special Issue - Articles An investigation on detonator triggering effect subjected to radio frequency energy exposure. Abstract PDF · Vol 9, No 3S (2017): Special ... No 3S (2017): Special Issue - Articles Experimental and numerical investigation of v-shape plates subjected to blast loadings

  16. Author Details

    African Journals Online (AJOL)

    Theorising Experience, Subjectivity and Narrative in Studies of Gender and Islam Abstract · Vol 33 (2013): Theorising Experience, Subjectivity and Narrative in Studies of Gender and Islam - Articles States of Being: Public Selves and National Privacies in Queer Muslim Autobiographies in South Africa Abstract. ISSN: 0257- ...

  17. Author Details

    African Journals Online (AJOL)

    Abstract PDF · Vol 13, No 2 (2001) - Articles Quarterly clinic 'Cerebral malaria' Details · Vol 22, No 4 (2010) - Articles Paediatric Wandering Spleens in Malawi Abstract PDF · Vol 23, No 1 (2011) - Articles Ward Round-A rare tumor of the kidney resulting in hypertension, renal failure and a cerebrovascular accident in a young ...

  18. Author Details

    African Journals Online (AJOL)

    El Harezy, anda M. Vol 12, No 3 (2000) - Articles BLOOD ANTIOXIDANTS AND INDICES OF LIPID PEROXIDATION IN ISCHEMIC HEART DISEASES Details. ISSN: 1110-5607. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  19. Author Details

    African Journals Online (AJOL)

    Dalamba, Yolisa. Vol 14, No 1 (2000): Ethnicity and Identity - Articles Towards An African Renaissance: Some Thoughts on the Renaissance Conference September 28th & 29th 1998 and its Future Implications Details. ISSN: 0256-004. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  20. Author Details

    African Journals Online (AJOL)

    AMOLO, Bayo. Vol 6, No 1 (1998) - Articles Aesthetic Ratings of some Selected Domestic Buildings: an exploratory study of architects and non-architects. Details. ISSN: 1117-1421. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  1. Author Details

    African Journals Online (AJOL)

    Chanunkha, Robert. Vol 16 (2002) - Articles Music education in Malawi Details PDF · Vol 21, No 1 (2008) - Articles Malawian ethnic music: Concepts of hand clapping, foot stamping and relaxation. Abstract PDF. ISSN: 1016-0728. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  2. Author Details

    African Journals Online (AJOL)

    Awas, Tesfaye. Vol 20, No 1 (1997) - Articles New plant records for Ethiopia Details PDF. ISSN: 0379-2897. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER ...

  3. Author Details

    African Journals Online (AJOL)

    Wudneh, Tesfaye. Vol 21, No 2 (1998) - Articles Fisheries management - a review of the current status and research needs in Ethiopia. Details PDF. ISSN: 0379-2897. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  4. Author Details

    African Journals Online (AJOL)

    Korme, Tesfaye. Vol 22, No 2 (1999) - Articles Lithologic and structural mapping of the northeast Lake Ziway area, Ethiopian Rift, with the help of landsat tm data. Details PDF. ISSN: 0379-2897. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  5. Author Details

    African Journals Online (AJOL)

    Akum, ZE. Vol 1, No 3 (2001) - Articles Basic home range characteristics for the conservation of the African grey parrot in the Korup national park, Cameroon Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms ...

  6. Author Details

    African Journals Online (AJOL)

    Tamungang, SA. Vol 1, No 3 (2001) - Articles Basic home range characteristics for the conservation of the African grey parrot in the Korup national park, Cameroon Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  7. Author Details

    African Journals Online (AJOL)

    Nzooh, Z. Vol 3, No 1 (2003) - Articles The impact of capture and trade in African grey parrot populations (Psittacus erithacus) in Lobeke National Park, south east Cameroon Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  8. Author Details

    African Journals Online (AJOL)

    Oghiakhe, Sunday. Vol 9, No 3 (1997) - Articles Trichomes and Resistance to Major Insect Pests in Cowpea, Vigna unguiculata (L.) Walp: A Review Details. ISSN: 1015-079X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  9. Author Details

    African Journals Online (AJOL)

    Balole, TV. Vol 12 (2003) - Articles Review of sweet sorghum: a potential cash and forage crop in Botswana Details. ISSN: 1021-0873. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL ...

  10. Author Details

    African Journals Online (AJOL)

    Nzimande, Blade. Vol 6, No 2 (2002) - Articles Inaugural Address, Eastern Cape Technikon, Butterworth Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  11. Author Details

    African Journals Online (AJOL)

    Simbi, D J. Vol 3, No 1 (1997) - Articles Effect of prior cold plastic deformation on mechanical properties and susceptibility to stress corrosion cracking and hydrogen embrittlement of titanium. Details · Vol 5, No 1 (1999) - Articles Sludge deposition and caustic embrittlement in the pre-mature failure of a waste heat boiler steel ...

  12. Author Details

    African Journals Online (AJOL)

    Mahan, S.M.. Vol 73 (1999) - Articles The Development of Vaccine against the Economically Important Tick-Borne Diseases of Domestic Ruminants in Zimbabwe Details. ISSN: 0254-2765. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  13. Author Details

    African Journals Online (AJOL)

    Onuoha, AIN. Vol 1, No 1 (2002) - Articles The Vibration Effect Of Unbalance Mass On Vertical Centrifugal Pump Rotor Details. ISSN: 1596-3497. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  14. Author Details

    African Journals Online (AJOL)

    Radwan M.D, Mona Ahmed. Vol 12, No 1 (2000) - Articles RELAPSING REMITTING MULTIPLE SCLEROSIS: CT AND MRI IMAGING VS CLINICAL FINDINGIN THE DIAGNOSIS AND DETERMINATION OF DISEASE ACTIVITY. Details. ISSN: 1110-5607. AJOL African Journals Online. HOW TO USE AJOL... for Researchers ...

  15. Author Details

    African Journals Online (AJOL)

    Atimomo, CE. Vol 9, No 1 (1999) - Articles Prognostic Factors Of Typhoid Perforation in Lagos Abstract · Vol 9, No 4 (1999) - Articles An open study of the safety and efficacy of ranitidine Bismuth citrate in the treatment of patients with Helicobacter Pylori-associated duodenal ulcer. Details. ISSN: 0189-2657. AJOL African ...

  16. Author Details

    African Journals Online (AJOL)

    Arigbabu, AO. Vol 9, No 4 (1999) - Articles An open study of the safety and efficacy of ranitidine Bismuth citrate in the treatment of patients with Helicobacter Pylori-associated duodenal ulcer. Details. ISSN: 0189-2657. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's ...

  17. Author Details

    African Journals Online (AJOL)

    Alexander, Neville. Vol 4, No 2 (2000) - Articles Book Review: CRD Halisi. Black Political Though in the Making of South African Democracy Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms ...

  18. Author Details

    African Journals Online (AJOL)

    Kamwendo, Gregory H. Vol 15 (2001) - Articles Book Review: Neville Alexander, (ed), Social Dynamics - special issue on 'Language Policies in Africa', Ayo Bamgbose, Language and Exclusion: The consequences of language policies in Africa Details PDF. ISSN: 1016-0728. AJOL African Journals Online. HOW TO USE ...

  19. Author Details

    African Journals Online (AJOL)

    Wotshela, Luvuyo. Vol 7, No 1 (2003) - Articles Review Symposium: Neville Alexander. An Ordinary Country: Issues in the Transition from Apartheid to Democracy. Pietermaritzburg. Natal University Press. 2002. Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for ...

  20. Author Details

    African Journals Online (AJOL)

    Jordan, Z Pallo. Vol 7, No 1 (2003) - Articles Review Symposium: Neville Alexander. An Ordinary Country: Issues in the Transition from Apartheid to Democracy. Pietermaritzburg. Natal University Press. 2002. Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  1. Author Details

    African Journals Online (AJOL)

    Gudefin, EJ. Vol 1, No 1 (2001) - Articles Analytical Study of Permanent Magnet Cylindrical Synchronous Machines fed by Rectangular or Sinusoidal Currents Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms ...

  2. Author Details

    African Journals Online (AJOL)

    Youmssi, A. Vol 1, No 1 (2001) - Articles Analytical Study of Permanent Magnet Cylindrical Synchronous Machines fed by Rectangular or Sinusoidal Currents Details · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  3. Author Details

    African Journals Online (AJOL)

    Gaevy, M. Vol 3, No 1 (2001): - Articles Effect of Losartan on cerebral blood flow and its autoregulation in spontaneously hypertensive rats before and after brain ischaemia. Details. ISSN: 0855-3823. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  4. Author Details

    African Journals Online (AJOL)

    Baba, Gnon. Vol 12, No 2 (1998) - Articles Ocinum canum sims - a lesser known source of volatile oil with terpineol - 4. Details PDF. ISSN: 1726-801X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  5. Author Details

    African Journals Online (AJOL)

    Adiku., T.K.. Vol 3, No 2 (2001): - Articles A review of resin-based and glass ionomer-based biomedical materials used in restorative dentistry. Details. ISSN: 0855-3823. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  6. Author Details

    African Journals Online (AJOL)

    Abaidoo, R.C.. Vol 3, No 1 (2001): - Articles Soil nitrogen availability and Bradyrhizobium spp. inoculation influence the utilization of nitrogen resources in legume-cereal systems. Details · Vol 3, No 2 (2001): - Articles Nodulation and nitrogen uptake characteristics as selection indices for promiscuous soybean breeding in ...

  7. Author Details

    African Journals Online (AJOL)

    Lavy, CBD. Vol 13, No 3 (2001) - Articles Short Report How safe is internal fixation in the immune compromised patient? Details PDF. ISSN: 1995-7262. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  8. Author Details

    African Journals Online (AJOL)

    Ladeinde, A. L.. Vol 4, No 2 (2001) - Articles Surgical Considerations in Maxillectomy Antral Malignant Neoplasms Details PDF. ISSN: 1119-3077. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  9. Author Details

    African Journals Online (AJOL)

    Lewis, CP. Vol 13, No 3 (2001) - Articles Short Report How safe is internal fixation in the immune compromised patient? Details PDF · Vol 13, No 3 (2001) - Articles External fixation in HIV-positive patients with open fractures. Abstract PDF. ISSN: 1995-7262. AJOL African Journals Online. HOW TO USE AJOL.

  10. Author Details

    African Journals Online (AJOL)

    Abdel Megeid (PH.D), Fadia Y. Vol 12, No 2 (2000) - Articles RELATIONSHIP OF PASSIVE SMOKING AND OTITS MEDIA WITH EFFUSION IN INFANTS Details. ISSN: 1110-5607. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  11. Author Details

    African Journals Online (AJOL)

    Growth and nutrient uptake of some cocoa varieties grown on contrasting soils. Details · Vol 36, No 1 (2003) - Articles Intercropping robusta coffee with some edible crops in Ghana: Agronomic performance and economic returns. Abstract · Vol 40, No 2 (2008) - Articles Effect of weed control methods on some soil properties ...

  12. Author Details

    African Journals Online (AJOL)

    Boudjemai, A. Vol 14 (2002) - Articles Thermal behavior using analytical and numerical model in multi-finger power heterojuction Bipolar transistors. Details. ISSN: 1111-0902. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  13. Author Details

    African Journals Online (AJOL)

    Gontrand, C. Vol 14 (2002) - Articles Modélisation électrique de transistors bipolaires radiofréquences a hétérojonction Compatibles CMOS Details. ISSN: 1111-0902. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  14. Author Details

    African Journals Online (AJOL)

    James, Richard. Vol 21, No 2 (1998) - Articles Colicin e2 producing bacteria from Yare River Details PDF. ISSN: 0379-2897. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News.

  15. Author Details

    African Journals Online (AJOL)

    Tesfaye, Anteneh. Vol 21, No 2 (1998) - Articles Colicin e2 producing bacteria from Yare River Details PDF. ISSN: 0379-2897. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News.

  16. Author Details

    African Journals Online (AJOL)

    BRIQUEU, L. Vol 6, No 1 (2000) - Articles Earth Sciences Pb - Pb and Sm - Nd isotope study of meta-igneous rocks of Kaduna region: implications for Archaean crustal development in Northern Nigeria. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  17. Author Details

    African Journals Online (AJOL)

    Tawah, CL. Vol 1, No 1 (2001) - Articles Genetic parameter estimates for growth traits in purebred Gudali and two-breed synthetic Wakwa beef cattle in a tropical environment. Details PDF · Vol 4, No 2 (2004) - Articles Mortalities amongst different genotypes of crossbred dairy calves in a tropical environment. Abstract PDF.

  18. Author Details

    African Journals Online (AJOL)

    Banstantsa, Jean - Rémy. Vol 8, No 1 (2001) - Articles La Bonne Gouvernance, utopie ou réalite: Le cas du Gabon Details PDF. ISSN: 1024-0969. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  19. Author Details

    African Journals Online (AJOL)

    Love, Alison. Vol 29, No 2 (2002) - Articles Policy-makers, the Press and Politics: Reporting a Public Policy Document Details. ISSN: 0379-0622. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  20. Author Details

    African Journals Online (AJOL)

    ROM, I. I.. Vol 7, No 4 (2001) - Articles Chemical Sciences Photochemical study on nickel hydroxy azide through benzene filter. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  1. Author Details

    African Journals Online (AJOL)

    Horn, CH. Vol 40, No 2 (2010) - Articles Ruminal acidosis: A review with detailed reference to the controlling agent Megasphaera elsdenii NCIMB 41125 (Review) Abstract PDF · Vol 41, No 2 (2011) - Articles The effect of dosing Megasphaera elsdenii NCIMB 41125 (Me) on lactation performance of multiparous Holstein ...

  2. Author Details

    African Journals Online (AJOL)

    Sarbacker, Stuart Ray. Vol 15, No 1 (2002): - Articles Enstasis and Ecstasis: A critical Appraisal of Eliade on Yoga and Shamanism Details. ISSN: 1011-7601. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions ...

  3. Author Details

    African Journals Online (AJOL)

    NWOBOSHI, LC. Vol 3, No 2 (2003) - Articles Litter fall and macronutrients return of Millettia thonningii [Schumach and V Thonn.]Bak and Pterocarpus santalinoides[L´ Herite, ex Dc.] stands in south-western Nigeria Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  4. Author Details

    African Journals Online (AJOL)

    Enu, Donald Bette. Vol 1, No 1 (2002) - Articles Curriculum approach of mobilization of the rural communities for sustainable development planning in Nigeria Details. ISSN: 1596-6224. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  5. Author Details

    African Journals Online (AJOL)

    Comarof, Jean. Vol 1999, No 3-4 (1999) - Articles Alien-Nation: Zombies, Immigrants and Millennial Capitalism Details. ISSN: 0850-8712. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  6. Author Details

    African Journals Online (AJOL)

    Titanji, Vincent P.K.. Vol 2 (2002): Supplement - Articles Genetic Aspects of Malaria: Human Leucocyte Antigen (Hla) Dqb Polymorphism and Antigen Recognition Patterns in Women at Delivery. Details · Vol 13, No 3 (2016) - Articles Integrated strategies for control of devastating transmissible diseases in Cameroonian ...

  7. Author Details

    African Journals Online (AJOL)

    Ibeabuchi, NM. Vol 10, No 3 (2000) - Articles Comparison of the effects of Methylsalicylate Cream with cryotherapy on delayed onset muscle soreness. Details · Vol 22, No 2 (2012) - Articles X-ray Pelvimetry And Labour Outcome In Term Pregnancy In A Rural Nigerian Population Abstract. ISSN: 0189-2657. AJOL African ...

  8. Author Details

    African Journals Online (AJOL)

    DADA, S S. Vol 6, No 1 (2000) - Articles Earth Sciences Pb - Pb and Sm - Nd isotope study of meta-igneous rocks of Kaduna region: implications for Archaean crustal development in Northern Nigeria. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  9. Author Details

    African Journals Online (AJOL)

    Focho, DA. Vol 2, No 1 (2002) - Articles Observations on the Meiotic Process in the African Pest Grasshopper Taphronota thaelephora Stal. (Orthoptera : Pyrgomorphidae) Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  10. Author Details

    African Journals Online (AJOL)

    Njukeng, FA. Vol 2, No 1 (2002) - Articles Observations on the Meiotic Process in the African Pest Grasshopper Taphronota thaelephora Stal. (Orthoptera : Pyrgomorphidae) Details · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  11. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... Can, G. Vol 15, No 3 (2015) - Articles Chronic hepatitis B associated with hepatic steatosis, insulin resistance, necroinflammation and fibrosis. Abstract PDF. ISSN: 1680-6905. AJOL African Journals Online. HOW TO ...

  12. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... Can, A. Vol 40, No 3 (2010) - Articles Frozen rumen fluid as microbial inoculum in the two-stage in vitro digestibility assay of ruminant feeds. Abstract PDF. ISSN: 2221-4062. AJOL African Journals Online. HOW TO ...

  13. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... Can, M. Vol 40, No 3 (2010) - Articles Effects of dietary boron on performance, egg production, egg quality and some bone parameters in layer hens. Abstract PDF. ISSN: 2221-4062. AJOL African Journals Online.

  14. Author Details

    African Journals Online (AJOL)

    Michael, Cheryl-Ann. Vol 1999, No 1-2 (1999) - Articles Imagining Futures: Identity and Nation in South African Autobiography Details. ISSN: 0850-8712. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  15. Author Details

    African Journals Online (AJOL)

    Incidence of bruising and dark firm dry beef in cattle carcasses in a commercial abattoir in Zimbabwe: An animal welfare concern. Details · Vol 5, No 1 (1999) - Articles Evaluation of Duckweed (Lemna minor) as a feed ingredient in the finisher diets of broiler chickens. Abstract. ISSN: 1019-7788. AJOL African Journals Online.

  16. Author Details

    African Journals Online (AJOL)

    Ligthelm, A.A.. Vol 5, No 2 (2001) - Articles Community attitudes towards Casinos and the estimated magnitude of problem gambling The Mpumalanga case. Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  17. Author Details

    African Journals Online (AJOL)

    Ollenu, L.A.A.. Vol 3, No 2 (2001): - Articles Effects of cocoa swollen-shoot virus on the yield of mature bearing trees of upper Amazon cocoa hybrids in Ghana Details. ISSN: 0855-3823. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  18. Author Details

    African Journals Online (AJOL)

    Watermeyer, Gill. Vol 1, No 1 (2003) - Articles The irritable bowel syndrome: clinical review. Details. ISSN: 1812-1659. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER ...

  19. Author Details

    African Journals Online (AJOL)

    EKPA, O. D.. Vol 7, No 2 (2001) - Articles Variental differences AND polymorphism in palm oil: a case study of palm oils blended with coconut oil. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms ...

  20. Author Details

    African Journals Online (AJOL)

    RIZZO, R. Vol 7, No 2 (2001) - Articles Variental differences AND polymorphism in palm oil: a case study of palm oils blended with coconut oil. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  1. Author Details

    African Journals Online (AJOL)

    TOLANI, JB. Vol 38, No 2 (2002) - Articles Lithological characteristics, clay mineral species and hydrocarbon potentials of the Campian-Paleocene sediments from Umuna-1 Well, Anabra Basin, Nigeria Details. ISSN: 1116-2775. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  2. Author Details

    African Journals Online (AJOL)

    Details · Vol 18, No 3 (2008) - Articles Brief ischaemia reduces testicular lipid peroxidation following susequent ischaemia: An evidence for ischaemic preconditioning. Abstract · Vol 18, No 3 (2008) - Articles Morinda Citrifolia fruit juice augments insulin action in sprague-dawley rats with experimentally induced diabetes

  3. Author Details

    African Journals Online (AJOL)

    ... full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. VICTOR, REGINALD, Oman. Vol 6 (1997) - Articles Some aspects of the ecology of Characidae (Pisces) in river Ase, southern Nigeria Details. ISSN: 0795-0101.

  4. Author Details

    African Journals Online (AJOL)

    Studies on some esterases of Coccinella septempunctata Brukii (Coleoptera: Coccinellidae) with varying degrees of insecticide tolerance, and implications for integrated management of aphids. Details · Vol 47 (2007) - Articles Status Of Cotton Aphid, Aphis gssypiiGlover (Homoptera: Aphididae), Resistance To Insecticides ...

  5. Author Details

    African Journals Online (AJOL)

    Mbuvi, J P. Vol 65 (1999) - Articles SESSION IV – SOIL AND WATER CONSERVATION - Hydraulic properties of Andasols following deforestation in the northern slopes of Mount Kenya Details. ISSN: 0012-8325. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More ...

  6. Author Details

    African Journals Online (AJOL)

    Wasunna, M. Vol 80, No 8 (2003): - Articles Visceral leishmaniasis with concomitant post kala-asar Dermal leishmaniasis responds to oral sitamaquine: case report. Details PDF. ISSN: 0012-835X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  7. Author Details

    African Journals Online (AJOL)

    Mbui, J. Vol 80, No 8 (2003): - Articles Visceral leishmaniasis with concomitant post kala-asar Dermal leishmaniasis responds to oral sitamaquine: case report. Details PDF. ISSN: 0012-835X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  8. Author Details

    African Journals Online (AJOL)

    Measurement of salinity and electrical conductivity of some soil samples of Uruan local government Area of Akwa Ibom State, Nigeria Abstract · Vol 8, No 1 (2002) - Articles The entropic formulation of statistical mechanics using the ISING model. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL.

  9. Author Details

    African Journals Online (AJOL)

    Ambe, Fergus. Vol 1, No 1 (2001) - Articles Effective Vaccines against and Immunotherapy of the HIV: A preliminary Report Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  10. Author Details

    African Journals Online (AJOL)

    Odigie, IP. Vol 10, No 4 (2000) - Articles High dose vitamin E administration attenuates hypertensin in 2-Kidney 1 Clip Goldblatt hypertensive rats. Details. ISSN: 0189-2657. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms ...

  11. Author Details

    African Journals Online (AJOL)

    BEFIDI, Rosa M. Vol 2 (2002): Supplement - Articles Prevalence of Multiple Concomitant Intestinal Parasitic Infections in Simbok a Malaria Endemic Village in Cameroon. Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  12. Author Details

    African Journals Online (AJOL)

    Mthatiwa, Dale Sy. Vol 17 (2003) - Articles Book Review: Leveling the Ground in Chichewa Literature: Francis Moto's Trends in Malawian Literature Details PDF. ISSN: 1016-0728. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  13. Author Details

    African Journals Online (AJOL)

    CHRIKI, A. Vol 12, No 3 (2000) - Articles Héritabilitiés et correlations génétique entre des caractérés floraux et reproducteurs étudiés chez Hedyasarum coronarium L. (Fabaceae). : Heritabilities and genetic correlation between floral and reproductive traits in Hedysarum coronarium L (Fabaceace) Details PDF. ISSN: 1015- ...

  14. Author Details

    African Journals Online (AJOL)

    Nyamapfene, K W. Vol 1, No 1 (1995) - Articles Design and application of a ranking system for the rapid assessment and selection of potential small-scale irrigation schemes. Details. ISSN: 1019-7788. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about ...

  15. Author Details

    African Journals Online (AJOL)

    computer interactions in Cameroon Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News.

  16. Author Details

    African Journals Online (AJOL)

    Msusa, AT. Vol 13, No 3 (2001) - Articles Student Voice An Elective Experience With the University of Oklahoma Details. ISSN: 1995-7262. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  17. Author Details

    African Journals Online (AJOL)

    ALOO, P A. Vol 7, No 1 (1996) - Articles Helminth Fauna of Oreochromis leucostictus (Pisces: CICHLIDAE) from a tropical lake, Lake Naivasha, Kenya Details. ISSN: 0002-0036. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  18. Author Details

    African Journals Online (AJOL)

    Idowu, OO. Vol 8, No 1 (2003) - Articles Evaluation of Different Substrates and Combinations on the Growth of Pleurotus pulmonarius (Fries) Quelet (Sajor-caju) Details. ISSN: 1118-2733. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  19. Author Details

    African Journals Online (AJOL)

    Samuel, W.M.. Vol 3, No 1 (2001): - Articles Questing behaviour and orientation of larval winter ticks, Dermacentor albipictus (Packard) (Acari: Ixodidae) on vegetation in Central Alberta, Canada Details. ISSN: 0855-3823. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  20. Author Details

    African Journals Online (AJOL)

    Aalangdong, O.I.. Vol 3, No 1 (2001): - Articles Questing behaviour and orientation of larval winter ticks, Dermacentor albipictus (Packard) (Acari: Ixodidae) on vegetation in Central Alberta, Canada Details · Vol 3, No 1 (2001): - Articles Food habits of the African elephant (Loxodonta africana) in Mole National Park, Damongo ...

  1. Author Details

    African Journals Online (AJOL)

    Ekemezie, Paul N. Vol 1, No 1 (2002) - Articles Temperature Regulation Of A Water-Heated Enclosure Using A Self-Learning Fuzzy Logic Controller Details. ISSN: 1596-3497. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  2. Author Details

    African Journals Online (AJOL)

    ENANG, M I. Vol 6, No 1 (2000) - Articles Chemical composition and soaping characteristics of peels from plantain (Musa paradisiaca) and banana (Musa sapientum). Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  3. Author Details

    African Journals Online (AJOL)

    Dosunmu, M. I.. Vol 9, No 4 (2003) - Articles Proximate composition and functional properties of raw and processed (steeped, boiled and roasted) plantain (Musa paradisiaca) flour. Abstract · Vol 8, No 1 (2002) - Articles The Chemical composition and Physico-chemical properties of Mucuna sloanei seed. Details.

  4. Author Details

    African Journals Online (AJOL)

    Angwe, CA. Vol 1, No 1 (2001) - Articles Culture potentials of Macrobrachium sp in Cameroon Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER ...

  5. Author Details

    African Journals Online (AJOL)

    Ekhelar, A.J.. Vol 10, No 1 (2001) - Articles Preliminary investigation into the haematology of adult Protopterus annectens (Owen) in Nigeria (Short communication. Details. ISSN: 0002-0036. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  6. Author Details

    African Journals Online (AJOL)

    Beraki, Asmara. Vol 16, No 1 (2002): (Neo)colonial discourse and global capitalism - Articles UNDER FIRE: Short autobiographical articles on repression and resistance: Azanian Filmmaking Details. ISSN: 0256-004. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's ...

  7. Author Details

    African Journals Online (AJOL)

    Buckle, Cathy. Vol 16, No 1 (2002): (Neo)colonial discourse and global capitalism - Articles UNDER FIRE: Short autobiographical articles on repression and resistance: A Man Called Wind Details. ISSN: 0256-004. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's ...

  8. Author Details

    African Journals Online (AJOL)

    Abdelraouf, Randa K. Vol 13, No 1 (2001) - Articles The effects of dexamethasone on chemotactic activity and inflammatory mediators in preterm Infants at risk for chronic lung disease. Details. ISSN: 1110-5607. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More ...

  9. Author Details

    African Journals Online (AJOL)

    Agyei-Afriyie, F. Vol 31 (1991): Special Food and Agriculture Edition - Articles Relationship between permethrin susceptiblity and elevated esterase in clones of cotton aphid (Homoptera:Aphididae) Details. ISSN: 0855-1448. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  10. Author Details

    African Journals Online (AJOL)

    ENO, A E. Vol 6, No 2 (2000) - Articles Medicine Toxicological and haematological effects of a venom extract from a sea anemone - Bunodosoma cavernata. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  11. Author Details

    African Journals Online (AJOL)

    Barnett, JR. Vol 35, No 1 (2002) - Articles Graft studies on cashe genotypes. Details. ISSN: 0855-0042. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER RESOURCES.

  12. Author Details

    African Journals Online (AJOL)

    Nkrumah, JD. Vol 35, No 1 (2002) - Articles Effects on some performance and carcass traits of feeding different levels of a cereal-based diet to grower pigs with or without plantain pseudostem - Research and Development Notes Details. ISSN: 0855-0042. AJOL African Journals Online. HOW TO USE AJOL.

  13. Author Details

    African Journals Online (AJOL)

    Duru, FIO. Vol 10, No 4 (2000) - Articles Morphometric characterization of the effect of crude pineal extract, orbital enucleation and pinealectomy on the teste of neonatal rat. Details · Vol 18, No 3 (2008) - Articles Brief ischaemia reduces testicular lipid peroxidation following susequent ischaemia: An evidence for ischaemic ...

  14. Author Details

    African Journals Online (AJOL)

    BERECZKY, Z.B.. Vol 8, No 3 (2002) - Articles CASE REPORT: PINEAL BODY SEMINOMA FOLLOWED BY TESTICULAR EMBRYONAL CARCINOMA IN A PATIENT WITH BILATERAL MICROLITHIASIS Details PDF. ISSN: 1110-5704. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  15. Author Details

    African Journals Online (AJOL)

    Kyarimpa, Rosemary. Vol 3, No 2 (1999) - Articles Song of the abuser, You are a killer. Details. ISSN: 1024-9451. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER ...

  16. Author Details

    African Journals Online (AJOL)

    Confined transmission resonances in multiple quantum well system. Abstract · Vol 8, No 1 (2002) - Articles Mathematic, Physics and Computer Sciences Quantization in type 1 multiple quantum well (MQW) and superlattice (SL) systems. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL.

  17. Author Details

    African Journals Online (AJOL)

    Immigrant become a Citizen? Relections on the Nation-State in Contemporary Africa Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  18. Author Details

    African Journals Online (AJOL)

    Sibanda, Bheki. Vol 16, No 1 (2002): (Neo)colonial discourse and global capitalism - Articles REVIEW: Out of America: A Black Man confronts Africa, by Keith Richburg Details. ISSN: 0256-004. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  19. Author Details

    African Journals Online (AJOL)

    Equus asinus) in cultivation tasks in Zimbabwe Details. ISSN: 1019-7788. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  20. Author Details

    African Journals Online (AJOL)

    Tetiker, H. Vol 17, No 3 (2014) - Articles Central region morphometry in a child brain; Age and gender differences. Abstract PDF · Vol 20, No 2 (2017) - Articles MRI-based detailed evaluation of the anatomy of the human coccyx among Turkish adults. Abstract PDF. ISSN: 1119-3077. AJOL African Journals Online. HOW TO ...

  1. Author Details

    African Journals Online (AJOL)

    Nzogang, JF. Vol 3, No 3 (2003) - Articles Effet des huiles essentielles des feuilles et des extrémités fleuries de Cupressus lusitanica sur la Tique Rhipicephalus lunulatus à L'ouest-Cameroun Details PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about ...

  2. Author Details

    African Journals Online (AJOL)

    ADEYEMI, GO. Vol 38, No 1 (2002) - Articles Geotechnical properties of lateritic soil developed over quartz schist in Ishara area, south western Nigeria Details · Vol 44, No 1 (2008) - Articles Comparative study of the influence of cement and lime stabilization on geotechnical properties of lateritic soil derived from pegmatite ...

  3. Author Details

    African Journals Online (AJOL)

    Manning, Shannell. Vol 3, No 2 (1999) - Articles Fairy-Tales: the circular motion of patriarchy Through the minds of children. Details. ISSN: 1024-9451. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  4. Author Details

    African Journals Online (AJOL)

    Abstract · Vol 11, No 1 (1999) - Articles NEW TECHNOLOGIES AND PRODUCTS The Zero Emissions Research Initiative (ZERI): Its Vision, Mission and Achievements, with Special Reference to Africa. Details · Vol 13, No 3 (2001) - Articles Editorial Some Reflections on Africa's Rich Biodiversity and the Lost Technological ...

  5. Author Details

    African Journals Online (AJOL)

    EBONG, P E. Vol 6, No 1 (2000) - Articles Theobromine administration inhibits platelet aggregation and elevates serum HDL - cholesterol in hyperlipidemic wistar rats. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  6. Author Details

    African Journals Online (AJOL)

    Fcc) Riser Reactor - The Four-Lump Model Details. ISSN: 1596-3497. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  7. Author Details

    African Journals Online (AJOL)

    Wachira, Francis N. Vol 11, No 3 (1999) - Articles A Comparative Intra-specific Karyotype Analysis in some Kenya Tea Cultivars, Camellia sinensis (L.). O Kuntze Details. ISSN: 1015-079X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  8. Author Details

    African Journals Online (AJOL)

    Comarof, John. Vol 1999, No 3-4 (1999) - Articles Alien-Nation: Zombies, Immigrants and Millennial Capitalism Details. ISSN: 0850-8712. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  9. Author Details

    African Journals Online (AJOL)

    OKO, S O. Vol 6, No 3 (2000) - Articles Cross section of equatorial electrojet magnetic fields. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER ...

  10. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or Register to get access to full text downloads. ... Adekomi, AA. Vol 3, No 5 (2009) - Articles The pedagogical implications of information and communication technology on adult education: a case study of the osun state colleges of education, Nigeria Abstract PDF.

  11. Author Details

    African Journals Online (AJOL)

    Harrison, WJ. Vol 13, No 3 (2001) - Articles Short Report How safe is internal fixation in the immune compromised patient? Details PDF · Vol 13, No 3 (2001) - Articles External fixation in HIV-positive patients with open fractures. Abstract PDF · Vol 20, No 1 (2008) - Articles Case Report: Ward Round - A football injury?

  12. Author Details

    African Journals Online (AJOL)

    Everard, David. Vol 192 (2001) - Articles Review of sustainable forest management - criteria and indicators: guest editorial. Details. ISSN: 2070-2639. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  13. Author Details

    African Journals Online (AJOL)

    BOUKABACHE, A. Vol 15 (2003) - Articles Effect of the gauges dimensions on the piezoresistive pressure sensor response. Details. ISSN: 1111-0902. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors. OTHER RESOURCES... Journal Quality · for Researchers · for Journals ...

  14. Author Details

    African Journals Online (AJOL)

    OGBAN, G. I.. Vol 7, No 4 (2001) - Articles Mathematics, Physics and Computer Sciences Exploring the potentials of the negative binomial distribution. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  15. Author Details

    African Journals Online (AJOL)

    Akindes, Francis. Vol 3, No 1 (1999) - Articles Les sciences sociales et la modernité en Afrique subsaharienne. Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  16. Author Details

    African Journals Online (AJOL)

    Bisong, Francis E. Vol 1, No 1 (2002) - Articles A multidisciplinary approach to ecosystem education. Details. ISSN: 1596-6224. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News.

  17. Author Details

    African Journals Online (AJOL)

    Musango, Francis. Vol 45 (1999) - Articles Art: The Allure of Local Landscapes Details. ISSN: 0041-574X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER ...

  18. Author Details

    African Journals Online (AJOL)

    Youmbi, JT. Vol 1, No 1 (2001) - Articles Culture potentials of Macrobrachium sp in Cameroon Details PDF · Vol 4, No 3 (2004) - Articles Zooplankton fauna from fish ponds in Kumba, Meme Division, Southwest Cameroon Abstract PDF · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  19. Author Details

    African Journals Online (AJOL)

    SIKOKI, F D. Vol 6, No 3 (2000) - Articles Comparison of growth and survival of two strains of Oreochromis niloticus (TREWAVAS) fed with methyltestosterone treated diet. Details. ISSN: 1118-0579. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  20. Author Details

    African Journals Online (AJOL)

    Mwaungula, FD. Vol 13, No 4 (2001) - Articles Anti-tuberculosis drug resistance in Karonga District: pattern and trend, 1986-2001. Details PDF. ISSN: 1995-7262. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  1. Author Details

    African Journals Online (AJOL)

    Lipenga, Allan. Vol 16 (2002) - Articles Le Chichewa essai de description dans une perspective didactique. Details PDF. ISSN: 1016-0728. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  2. Author Details

    African Journals Online (AJOL)

    Chimbombi, EM. Vol 11 (2003) - Articles Prospects for adding value to maize and sorghum. Details. ISSN: 1021-0873. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER ...

  3. Author Details

    African Journals Online (AJOL)

    Hodgkin's Lymphoma as cause of paraplegia. Abstract PDF · Vol 13, No 4 (2001) - Articles Case Report A 48 year-old man with fever and neck pain. Details · Vol 13, No 1 (2001) - Articles Short Reports Audit of Management of Open Fractures

  4. Author Details

    African Journals Online (AJOL)

    Taylor, TE. Vol 13, No 2 (2001) - Articles Meeting Ethical aspects of clinical research in developing countries. Details PDF · Vol 23, No 2 (2011) - Articles Magnetic Resonance Imaging in Malawi: Contributions to Clinical Care, Medical Education and Biomedical Research Abstract PDF · Vol 10, No 1 (1994) - Articles

  5. Author Details

    African Journals Online (AJOL)

    Vernier, A. Vol 20, No 2 (1997) - Articles Conceptual model for Boku hydrothermal area (Nazareth), Main Ethiopian Rift Valley. Details PDF. ISSN: 0379-2897. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions ...

  6. Author Details

    African Journals Online (AJOL)

    1g02) by use of Frster energy transfer. Details PDF. ISSN: 1726-801X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  7. Author Details

    African Journals Online (AJOL)

    Kumbungu District of Northern Region of Ghana - Research and Development Notes Details · Vol 41, No 1 (2008) - Articles Technological changes in shea butter production in Ghana: A case study of shea butter production in the Yendi District of ...

  8. Author Details

    African Journals Online (AJOL)

    Comments on the Sanef media audit: a new news culture is facing the media and journalism educators: the time to act is now! Abstract · Vol 23, No 1 (2002) - Articles The Fourth Estate under siege - a call for synergy: commentary on the Sanef report. Details · Vol 23, No 1 (2002) - Articles Eve-olution: the status of female ...

  9. Author Details

    African Journals Online (AJOL)

    KOFFI, E.K.. Vol 12, No 1 (2000) - Articles Intégration de la culture in vitro dans la recherché pluridisciplinaire pour L'amélioration de l'hévéaculture en Côte d'lvoire : Pluridisciplinary research approach to in Vitro tissue culture for the improvement of rubber tree cultivation en Côte d'lvoire. Details PDF. ISSN: 1015-2288.

  10. Author Details

    African Journals Online (AJOL)

    Vergès, Françoise. Vol 1999, No 3-4 (1999) - Articles Sex, Milk and Death: The Enigma Sexuality Details · Vol 2, No 3-4 (2000) - Articles Marges de l'afrique : marges africaines le geste de decentrer l'afrique. Abstract. ISSN: 0850-8712. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  11. Author Details

    African Journals Online (AJOL)

    Bahi, Aghi. Vol 7, No 1 (2003) - Articles La « Sorbonne » d'Abidjan: rêve de démocratie ou naissance d'un espace public? Details PDF. ISSN: 1027-4332. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  12. A comparative study of the origin, structure, and indexing language of the Persian and English keywords of articles indexed in the IranMedex database and their compliance with the Persian medical thesaurus and Medical Subject Headings.

    Science.gov (United States)

    Parsaei-Mohammadi, Parastoo; Ghasemi, Ali Hossein; Hassanzadeh-Beheshtabad, Raziyeh

    2017-01-01

    In the present era, thesauri as tools in indexing play an effective role in integrating retrieval preventing fragmentation as well as a multiplicity of terminologies and also in providing information content of documents. This study aimed to investigate the keywords of articles indexed in IranMedex in terms of origin, structure and indexing situation and their Compliance with the Persian Medical Thesaurus and Medical Subject Headings (MeSH). This study is an applied research, and a survey has been conducted. Statistical population includes 32,850 Persian articles which are indexed in the IranMedex during the years 1385-1391. 379 cases were selected as sample of the study. Data collection was done using a checklist. In analyzing the findings, the SPSS Software were used. Although there was no significant difference in terms of indexing origin between the proportion of different types of the Persian and English keywords of articles indexed in the IranMedex, the compliance rates of the Persian and English keywords with the Persian medical thesaurus and MeSH were different in different years. In the meantime, the structure of keywords is leaning more towards phrase structure, and a single word structure and the majority of keywords are selected from the titles and abstracts. The authors' familiarity with the thesauri and controlled tools causes homogeneity in assigning keywords and also provides more precise, faster, and easier retrieval of the keywords. It's suggested that a mixture of natural and control languages to be used in this database in order to reach more comprehensive results.

  13. Author Details

    African Journals Online (AJOL)

    Use of absolute lymphocyte count or neutrophil ingestion rate of nitroblue tetrazolium (NBT) as alternative index to CD4+T-cell count to initiate ART in the management of HIV/AIDS disease. Abstract PDF · Vol 6, No 4 (2012) - Articles Serum hormonal levels in HIV/AIDS infected male subjects on antiretroviral therapy (ART) ...

  14. Author Details

    African Journals Online (AJOL)

    Shawa, LB. Vol 3, No 2 (2014) - Articles Blending critical thinking skills with the teaching of subject matter: Case of a geography lesson in a Malawi School Abstract PDF. ISSN: 2227-5444. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  15. Author Details

    African Journals Online (AJOL)

    Nwankwo, MJ. Vol 41, No 2 (2014) - Articles Effect of neuro-developmental therapy (NDT) on disability level of subjects with cerebral palsy receiving physiotherapy at the University of Nigeria Teaching Hospital, Enugu, Nigeria Abstract PDF. ISSN: 0302-4660. AJOL African Journals Online. HOW TO USE AJOL.

  16. Author Details

    African Journals Online (AJOL)

    Roberts, CK. Vol 4, No 2 (1999) - Articles Double blind comparison of plasma lipids in Healthy subjects eating potato crisps fried in palmolein of canola oil. Abstract PDF. ISSN: 1028-6098. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  17. Author Details

    African Journals Online (AJOL)

    Dellbridge, Carey-Ann. Vol 21, No 2 (2009) - Articles Clinical Perspective An adolescent's subjective experiences of mindfulness. Abstract. ISSN: 1728-0583. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions ...

  18. Author Details

    African Journals Online (AJOL)

    Chukwuanukwu, RC. Vol 5, No 2 (2007) - Articles CD4 counts in HIV positive subjects before and during antiretroviral therapy. Abstract. ISSN: 1597-0043. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of ...

  19. Author Details

    African Journals Online (AJOL)

    Bachar, SC. Vol 1, No 4 (2014) - Articles Anti-inflammatory, analgesic and diuretic activity of Ludwigia hyssopifolia Linn Abstract PDF · Vol 1, No 4 (2014) - Articles Comparative pharmacokinetic analysis with two omeprazole formulations “Proceptin®” and “Losec®” in healthy subjects. Abstract PDF. ISSN: 1694-2078.

  20. Author Details

    African Journals Online (AJOL)

    Chakrabarty, JK. Vol 1, No 4 (2014) - Articles Comparative pharmacokinetic analysis with two omeprazole formulations “Proceptin®” and “Losec®” in healthy subjects. Abstract PDF. ISSN: 1694-2078. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  1. Author Details

    African Journals Online (AJOL)

    Madukosiri, CH. Vol 2, No 3 (2006) - Articles Comparative study of the hemoglobin concentration of vegetarian and non-vegetarian subjects in Ogun state, Nigeria Abstract. ISSN: 0794-4713. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  2. Author Details

    African Journals Online (AJOL)

    Jala, SJ. Vol 7, No 2 (2008) - Articles Baro–Reflex Sensitivity is Augmented more in Athletes than in Sickle Cell Anaemia Subjects Following Vitamin C Supplementation Abstract. ISSN: 1595-8272. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  3. Author Details

    African Journals Online (AJOL)

    Sikiru, Lamina. Vol 19, No 1 (2009) - Articles Effect of Aerobic Exercise on C - reactive protein (Crp) and Index of Erectile Function in Subjects with Hypertension and Erectile Dysfunction, Kano, Nigeria Abstract PDF · Vol 18, No 3 (2008) - Articles EFFECTS OF AEROBIC EXERCISE IN THE MANAGEMENT OF ERECTILE ...

  4. Author Details

    African Journals Online (AJOL)

    Lamina, S. Vol 8, No 4 (2008) - Articles Pattern of Ptosis in Kano North-West Nigeria Abstract PDF · Vol 9, No 4 (2009) - Articles Ergogenic effect of varied doses of coffee-caffeine on maximal aerobic power of young African subjects. Abstract PDF · Vol 12, No 4 (2012) - Articles Pattern of facial palsy in a typical Nigerian ...

  5. Author Details

    African Journals Online (AJOL)

    Lamina, S. Vol 13, No 1 (2013) - Articles Effects of Interval Training Programme on Resting Heart Rate in Subjects with Hypertension: A Randomized Controlled Trial Abstract PDF. ISSN: 1597-4292. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  6. Author Details

    African Journals Online (AJOL)

    Igwe, MN. Vol 5, No 3 (2015) - Articles Psychiatric Morbidity among Subjects with Leprosy and Albinism in South East Nigeria: A Comparative Study Abstract PDF. ISSN: 2141-9248. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  7. Author Details

    African Journals Online (AJOL)

    Uwakwe, R. Vol 5, No 3 (2015) - Articles Psychiatric Morbidity among Subjects with Leprosy and Albinism in South East Nigeria: A Comparative Study Abstract PDF. ISSN: 2141-9248. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  8. Author Details

    African Journals Online (AJOL)

    Private Practice review Tariff and coding mess – a wicked problem! Abstract · Vol 11, No 1 (2013) - Articles Private Practice Review: A time bomb of resentment is ticking among doctors who are subjected to government and third-party payers interfering with the doctor-patient relationship. Abstract · Vol 11, No 1 (2013) - ...

  9. Author Details

    African Journals Online (AJOL)

    Lai, I. Vol 8, No 2 (2015) - Articles Ameliorative effects of selenium and vitamin e supplementation on some haematological parameters and red blood cell osmotic fragilty in wistar rats subjected to water immersion restraint stress. Abstract PDF. ISSN: 2006-6996. AJOL African Journals Online. HOW TO USE AJOL.

  10. Author Details

    African Journals Online (AJOL)

    The Burnout Syndrome and its Intervention Strategies for Physicians Abstract · Vol 61, No 5 (2012) - Articles Psychiatric morbidity among subjects with Tinnitus in an ENT clinic in Lagos, Nigeria Abstract · Vol 62, No 5-6 (2012) - Articles The Prevalence of Dental Anxiety and Validation of the Modified Dental Anxiety Scale in ...

  11. Author Details

    African Journals Online (AJOL)

    Amos-Tautua, BMW. Vol 2, No 3 (2006) - Articles Comparative study of the hemoglobin concentration of vegetarian and non-vegetarian subjects in Ogun state, Nigeria Abstract. ISSN: 0794-4713. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  12. Author Details

    African Journals Online (AJOL)

    Haematology reference values for healthy elderly blacks residing in Harare, Zimbabwe Abstract · Vol 46, No 5 (2000) - Articles Comparison of wheelchair ... No 9 (2000) - Articles Thyroid status and the levels of thyroid auto-antibodies in the sera of hyperthyroid and goitrous subjects. Abstract · Vol 47, No 11 (2001) - Articles

  13. Author Details

    African Journals Online (AJOL)

    Demir, S. Vol 15, No 2 (2015) - Articles Assessment of subjective sleep quality in iron deficiency anaemia. Abstract PDF. ISSN: 1680-6905. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact ...

  14. Author Details

    African Journals Online (AJOL)

    Zinc and Selenium levels in Motor Mechanics, Paints Sprayers, Smokers, Lubricant Workers and Battery Workers Exposed to Lead in Nnewi, South Eastern Nigeria. Abstract · Vol 15, No 1 (2011) - Articles Evaluation of prognostic value of albumin and iron in symptomatic hiv/malaria co-infected subjects on art in Nnewi, ...

  15. Author Details

    African Journals Online (AJOL)

    Timothy, EE. Vol 10, No 2 (2011) - Articles Students' perception of teacher's knowledge of subject matter and reading comprehension performance of SS 3 students in Cross River State, Nigeria Abstract. ISSN: 1596-6224. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  16. Author Details

    African Journals Online (AJOL)

    Opoku-Asare, NA. Vol 31, No 3 (2011) - Articles Girls' Motivation, Participation And Preference For Visual Arts Subjects In Four Senior High Schools In Central Region, Ghana Abstract PDF · Vol 32, No 1 (2012) - Articles Assessing the Suitability of Woven Fabric and Composite Textile Techniques for Mural Production

  17. Author Details

    African Journals Online (AJOL)

    Ada, Joan Nike. Vol 7, No 1 (2016) - Articles Human Resource Subjects Allocation and Students' Academic Performance in Secondary Schools in Obudu Local Government Council, Nigeria Abstract. ISSN: 2141-4343. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's ...

  18. Author Details

    African Journals Online (AJOL)

    Ashraf, Kamran. Vol 15, No 10 (2016) - Articles Clinical and electrophysiological efficacy of leaf extract of Gingko biloba L (Ginkgoaceae) in subjects with diabetic sensorimotor polyneuropathy. Abstract PDF. ISSN: 1596-9827. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  19. Author Details

    African Journals Online (AJOL)

    Amadasu, BK. Vol 61, No 5 (2012) - Articles Psychiatric morbidity among subjects with Tinnitus in an ENT clinic in Lagos, Nigeria Abstract. ISSN: 0189-0964. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions ...

  20. Author Details

    African Journals Online (AJOL)

    Adekoya, VA. Vol 61, No 5 (2012) - Articles Psychiatric morbidity among subjects with Tinnitus in an ENT clinic in Lagos, Nigeria Abstract. ISSN: 0189-0964. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions ...

  1. Author Details

    African Journals Online (AJOL)

    Onyechi, UA. Vol 8, No 2 (2010) - Articles Detarium microcarpium Bread Meal: It's Physiological Effects on the Postprandial Blood Glucose and Insulin Levels of Healthy Non Diabetics Subjects Abstract. ISSN: 1596-7409. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  2. Author Details

    African Journals Online (AJOL)

    Ezema, CI. Vol 16, No 1 (2011) - Articles Assessment of office furniture and knowledge of work ergonomics among bank workers in Enugu metropolis. Abstract · Vol 16, No 2 (2011) - Articles Cardiovascular response to resistive and non-resistive reciprocal pulley exercise among apparently healthy subjects. Abstract · Vol 16 ...

  3. Author Details

    African Journals Online (AJOL)

    Lubbe, Carien. Vol 21, No 2 (2009) - Articles Clinical Perspective An adolescent's subjective experiences of mindfulness. Abstract. ISSN: 1728-0583. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use ...

  4. Author Details

    African Journals Online (AJOL)

    Azumurana, So. Vol 18, No 1 (2012) - Articles James Baldwin's Go Tell it on the Mountain and the Psychoanalytic Poetics: Affirming the Subjectivity of the African American Abstract. ISSN: 0075-7640. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL ...

  5. Author Details

    African Journals Online (AJOL)

    Salako, AO. Vol 20 (2008) - Articles Coverage of Africa-specific subject areas and sources by some major Internet search engines. Abstract. ISSN: 0855-3033. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and ...

  6. Author Details

    African Journals Online (AJOL)

    Sarnin, S.S.. Vol 9, No 5S (2017): Special Issue - Articles Interactive learning software for electrical engineering subjects using MATLAB and its GUI Abstract PDF. ISSN: 1112-9867. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners ...

  7. Radial Head Fractures

    Science.gov (United States)

    Jordan, Robert W.; Jones, Alistair DR.

    2017-01-01

    Background: Radial head fractures are common elbow injuries in adults and are frequently associated with additional soft tissue and bone injuries. Methods: A literature search was performed and the authors’ personal experiences are reported. Results: Mason type I fractures are treated non-operatively with splinting and early mobilisation. The management of Mason type II injuries is less clear with evidence supporting both non-operative treatment and internal fixation. The degree of intra-articular displacement and angulation acceptable for non-operative management has yet to be conclusively defined. Similarly the treatment of type III and IV fractures remain controversial. Traditional radial head excision is associated with valgus instability and should be considered only for patients with low functional demands. Comparative studies have shown improved results from internal fixation over excision. Internal fixation should only be attempted when anatomic reduction and initiation of early motion can be achieved. Authors have reported that results from fixation are poorer and complication rates are higher if more than three fragments are present. Radial head arthroplasty aims to reconstruct the native head and is indicated when internal fixation is not feasible and in the presence of complex elbow injuries. Overstuffing of the radiocapitellar joint is a frequent technical fault and has significant adverse effects on elbow biomechanics. Modular design improves the surgeon’s ability to reconstruct the native joint. Two randomised controlled trials have shown improved clinical outcomes and lower complication rate following arthroplasty when compared to internal fixation. Conclusion: We have presented details regarding the treatment of various types of radial head fractures - further evidence, however, is still required to provide clarity over the role of these different management strategies. PMID:29290880

  8. Is HEADS in our heads?

    DEFF Research Database (Denmark)

    Boisen, Kirsten A; Hertz, Pernille Grarup; Blix, Charlotte

    2016-01-01

    BACKGROUND: Outpatient clinic visits are a window of opportunity to address health risk behaviors and promote a healthier lifestyle among young people. The HEADS (Home, Education, Eating, Activities, Drugs [i.e. substance use including tobacco, alcohol, and illegal drugs], Sexuality [including...... contraception], Safety, Self-harm) interview is a feasible way of exploring health risk behaviors and resilience. OBJECTIVE: The purpose of this study was to evaluate how often HEADS topics were addressed according to young patients and staff in pediatric and adult outpatient clinics. METHODS: We conducted...... care professionals participated. We found only small reported differences between staff and young patients regarding whether home, education, and activity were addressed. However, staff reported twice the rate of addressing smoking, alcohol, illegal drugs, sexuality, and contraception compared to young...

  9. The head of the earwig Forficula auricularia (Dermaptera) and its evolutionary implications

    NARCIS (Netherlands)

    Neubert, David; Simon, Sabrina; Beutel, Rolf G.; Wipfler, Benjamin

    2017-01-01

    The external and internal head morphology including the musculature of the common earwig Forficula auricularia is described in detail. We specified and corrected previous descriptions and provided a detailed documentation. The head of Forficula is characterized by prognathism, generalized mandibles

  10. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... imaging (MRI) of the head uses a powerful magnetic field, radio waves and a computer to produce detailed ... whether there’s a possibility you are pregnant. The magnetic field is not harmful, but it may cause some ...

  11. Principle Study of Head Meridian Acupoint Massage to Stress Release via Grey Data Model Analysis

    Directory of Open Access Journals (Sweden)

    Ya-Ting Lee

    2016-01-01

    Full Text Available This paper presents the scientific study of the effectiveness and action principle of head meridian acupoint massage by applying the grey data model analysis approach. First, the head massage procedure for massaging the important head meridian acupuncture points including Taiyang, Fengfu, Tianzhu, Fengqi, and Jianjing is formulated in a standard manner. Second, the status of the autonomic nervous system of each subject is evaluated by using the heart rate variability analyzer before and after the head massage following four weeks. Afterward, the physiological factors of autonomic nerves are quantitatively analyzed by using the grey data modeling theory. The grey data analysis can point out that the status of autonomic nervous system is greatly improved after the massage. The order change of the grey relationship weighting of physiological factors shows the action principle of the sympathetic and parasympathetic nerves when performing head massage. In other words, the grey data model is able to distinguish the detailed interaction of the autonomic nervous system and the head meridian acupoint massage. Thus, the stress relaxing effect of massaging head meridian acupoints is proved, which is lacked in literature. The results can be a reference principle for massage health care in practice.

  12. Principle Study of Head Meridian Acupoint Massage to Stress Release via Grey Data Model Analysis.

    Science.gov (United States)

    Lee, Ya-Ting

    2016-01-01

    This paper presents the scientific study of the effectiveness and action principle of head meridian acupoint massage by applying the grey data model analysis approach. First, the head massage procedure for massaging the important head meridian acupuncture points including Taiyang, Fengfu, Tianzhu, Fengqi, and Jianjing is formulated in a standard manner. Second, the status of the autonomic nervous system of each subject is evaluated by using the heart rate variability analyzer before and after the head massage following four weeks. Afterward, the physiological factors of autonomic nerves are quantitatively analyzed by using the grey data modeling theory. The grey data analysis can point out that the status of autonomic nervous system is greatly improved after the massage. The order change of the grey relationship weighting of physiological factors shows the action principle of the sympathetic and parasympathetic nerves when performing head massage. In other words, the grey data model is able to distinguish the detailed interaction of the autonomic nervous system and the head meridian acupoint massage. Thus, the stress relaxing effect of massaging head meridian acupoints is proved, which is lacked in literature. The results can be a reference principle for massage health care in practice.

  13. Utility of Stepping, Walking, and Head Impulses for Screening Patients for Vestibular Impairments.

    Science.gov (United States)

    Cohen, Helen S; Sangi-Haghpeykar, Haleh; Ricci, Natalia A; Kampangkaew, June; Williamson, Robert A

    2014-07-01

    To determine if some common screening tests predict scores on detailed, objective diagnostic tests of the vestibular system. Sixty patients with vestibular disorders were compared with 60 asymptomatic controls. Vestibular diagnostic laboratory, tertiary care center. Subjects were screened with head impulse tests, Fukuda stepping tests while walking and marching in place, and tandem walking tests with eyes open and closed. All subjects underwent bithermal caloric tests and Dix-Hallpike maneuvers; patients underwent low-frequency sinusoidal tests of the vestibulo-ocular reflex in darkness and cervical vestibular evoked myogenic potentials. On tandem walking tests, patients differed significantly from controls, but receiver operating characteristic scores were impulse tests, patients with bithermal caloric weakness (≥20% and 0.80 only for subjects with severe bithermal caloric weakness and were highest, at 0.88, for subjects with severe weakness and age ≥ 60 years. The Fukuda test is a poor screening test because it does not correlate well with objective test findings. Tandem walking is best used for screening older patients for vestibular disorders. Positive findings on a head impulse test are probably consistent with severe peripheral vestibular impairment and may be most useful in older patients. In younger patients with vertigo, negative results on head impulse tests may not be informative. © American Academy of Otolaryngology—Head and Neck Surgery Foundation 2014.

  14. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT scanning of the head is typically ...

  15. Mechanisms of head injuries in elite football.

    Science.gov (United States)

    Andersen, T E; Arnason, A; Engebretsen, L; Bahr, R

    2004-12-01

    The aim of this study was to describe, using video analysis, the mechanisms of head injuries and of incidents with a high risk of head injury in elite football. Videotapes and injury information were collected prospectively for 313 of the 409 matches played in the Norwegian (2000 season) and Icelandic (1999 and 2000 season) professional leagues. Video recordings of incidents where a player appeared to be hit in the head and the match was consequently interrupted by the referee were analysed and cross referenced with reports of acute time loss injuries from the team medical staff. The video analysis revealed 192 incidents (18.8 per 1000 player hours). Of the 297 acute injuries reported, 17 (6%) were head injuries, which corresponds to an incidence of 1.7 per 1000 player hours (concussion incidence 0.5 per 1000 player hours). The most common playing action was a heading duel with 112 cases (58%). The body part that hit the injured player's head was the elbow/arm/hand in 79 cases (41%), the head in 62 cases (32%), and the foot in 25 cases (13%). In 67 of the elbow/arm/hand impacts, the upper arm of the player causing the incident was at or above shoulder level, and the arm use was considered to be active in 61 incidents (77%) and intentional in 16 incidents (20%). This study suggests that video analysis provides detailed information about the mechanisms for head injuries in football. The most frequent injury mechanism was elbow to head contact, followed by head to head contact in heading duels. In the majority of the elbow to head incidents, the elbow was used actively at or above shoulder level, and stricter rule enforcement or even changes in the laws of the game concerning elbow use should perhaps be considered, in order to reduce the risk of head injury.

  16. Amplitudes of head movements during putative eye-only saccades.

    Science.gov (United States)

    Oommen, Brian S; Stahl, John S

    2005-12-14

    The mechanisms allowing humans and other primates to dissociate head and eye movements during saccades are poorly understood. A more precise knowledge of head movement behavior during apparent eye-only saccades may provide insight into those mechanisms. We studied the distributions of head amplitude in normal humans. In half of the subjects, these distributions indicated the presence of a population of minor ("residual") head movements during eye-only saccades, distinct from the continuum of head movements generated during frank eye-head saccades. Like full-sized head movements, the residual movements grew in proportion to target eccentricity, indicating their drive is derived from the premotor command for the saccade. Furthermore, their amplitudes related most strongly to the head amplitudes obtained when subjects produced full-sized head movements and were reduced when subjects were instructed to perform exclusively eye-only saccades. Both observations suggest that the drive for residual head movements originates downstream of the point in which the head movement command diverges from the generalized gaze shift command. The results are consistent with a model of head control in which a neural gate prevents the common gaze shift command from reaching the head premotor circuitry whenever an eye-only saccade is desired. However, the gate is either imperfect or the multiple pathways that relay gaze shift signals to the head motor circuitry allow for the gate to be circumvented. The results underscore the need for physiological studies to probe neuronal activity related to neck activation during eye-only saccades.

  17. Head Impact Laboratory (HIL)

    Data.gov (United States)

    Federal Laboratory Consortium — The HIL uses testing devices to evaluate vehicle interior energy attenuating (EA) technologies for mitigating head injuries resulting from head impacts during mine/...

  18. Main: Clone Detail [KOME

    Lifescience Database Archive (English)

    Full Text Available Clone Detail Mapping Pseudomolecule data detail Detail information Mapping to the T...IGR japonica Pseudomolecules kome_mapping_pseudomolecule_data_detail.zip kome_mapping_pseudomolecule_data_detail ...

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Head Computed tomography (CT) of the head uses special x-ray ... Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a CT or CAT ...

  20. Systematic analysis of head-to-head gene organization: evolutionary conservation and potential biological relevance.

    Directory of Open Access Journals (Sweden)

    Yuan-Yuan Li

    2006-07-01

    Full Text Available Several "head-to-head" (or "bidirectional" gene pairs have been studied in individual experiments, but genome-wide analysis of this gene organization, especially in terms of transcriptional correlation and functional association, is still insufficient. We conducted a systematic investigation of head-to-head gene organization focusing on structural features, evolutionary conservation, expression correlation and functional association. Of the present 1,262, 1,071, and 491 head-to-head pairs identified in human, mouse, and rat genomes, respectively, pairs with 1- to 400-base pair distance between transcription start sites form the majority (62.36%, 64.15%, and 55.19% for human, mouse, and rat,respectively of each dataset, and the largest group is always the one with a transcription start site distance of 101 to 200 base pairs. The phylogenetic analysis among Fugu, chicken, and human indicates a negative selection on the separation of head-to-head genes across vertebrate evolution, and thus the ancestral existence of this gene organization. The expression analysis shows that most of the human head-to-head genes are significantly correlated,and the correlation could be positive, negative, or alternative depending on the experimental conditions. Finally, head to-head genes statistically tend to perform similar functions, and gene pairs associated with the significant cofunctions seem to have stronger expression correlations. The findings indicate that the head-to-head gene organization is ancient and conserved, which subjects functionally related genes to correlated transcriptional regulation and thus provides an exquisite mechanism of transcriptional regulation based on gene organization. These results have significantly expanded the knowledge about head-to-head gene organization. Supplementary materials for this study are available at http://www.scbit.org/h2h.

  1. Mechanics of blast loading on the head models in the study of traumatic brain injury using experimental and computational approaches.

    Science.gov (United States)

    Ganpule, S; Alai, A; Plougonven, E; Chandra, N

    2013-06-01

    Blast waves generated by improvised explosive devices can cause mild, moderate to severe traumatic brain injury in soldiers and civilians. To understand the interactions of blast waves on the head and brain and to identify the mechanisms of injury, compression-driven air shock tubes are extensively used in laboratory settings to simulate the field conditions. The overall goal of this effort is to understand the mechanics of blast wave-head interactions as the blast wave traverses the head/brain continuum. Toward this goal, surrogate head model is subjected to well-controlled blast wave profile in the shock tube environment, and the results are analyzed using combined experimental and numerical approaches. The validated numerical models are then used to investigate the spatiotemporal distribution of stresses and pressure in the human skull and brain. By detailing the results from a series of careful experiments and numerical simulations, this paper demonstrates that: (1) Geometry of the head governs the flow dynamics around the head which in turn determines the net mechanical load on the head. (2) Biomechanical loading of the brain is governed by direct wave transmission, structural deformations, and wave reflections from tissue-material interfaces. (3) Deformation and stress analysis of the skull and brain show that skull flexure and tissue cavitation are possible mechanisms of blast-induced traumatic brain injury.

  2. An inherited episodic head tremor syndrome in Doberman pinscher dogs.

    Science.gov (United States)

    Wolf, Martina; Bruehschwein, Andreas; Sauter-Louis, Carola; Sewell, Adrian C; Fischer, Andrea

    2011-11-01

    Episodic head tremor anecdotally occurs in the Doberman pinscher dog breed, but it is not described in sufficient detail in the literature. We evaluated 87 Doberman pinschers affected with episodic head tremor and appropriate controls. The data analyzed were collected through detailed questionnaires, elaborate telephone interviews, and video recordings. Affected dogs underwent clinical, neurological, and laboratory examination, and a detailed diagnostic workup was conducted in 5 affected dogs. Pedigrees of affected dogs were collected and reviewed. The affected dogs expressed individual phenotypes of either horizontal or vertical head movements, but rarely did a dog exhibit head movements in both directions. There was considerable variation in duration (10 seconds to 3 hours; median: 3 minutes), frequency of occurrence (1-20 episodes/day; median: 2/day) of head tremor and length of the period without head tremor (1-1,800 days; median: 60 days). Subtle dystonic posturing of the head and neck during head tremor was evident on video recordings of 5 dogs. Certain exceptional conditions such as illness, surgery, some medications, heat, pseudopregnancy, or pregnancy triggered episodes. Two main important forms of episodic head tremor were identified: a familial early-onset form (age dogs were traced back to 1 common sire, also including sporadic cases. Episodic head tremor is an inherited, paroxysmal movement disorder that affects the Doberman pinscher breed. Identification of the causative genes in the future will allow us to obtain a more detailed description of the syndrome. Copyright © 2011 Movement Disorder Society.

  3. 5 CFR 352.903 - Effecting a detail or transfer.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Effecting a detail or transfer. 352.903... detail or transfer. (a) Authority to approve. The head of an agency may enter into written agreements with the Commission for the detail or voluntary transfer, for set periods of time, of agency employees...

  4. OCULAR MANIFESTATIONS OF HEAD INJURIES

    Directory of Open Access Journals (Sweden)

    Kanukollu Venkata Madusudana Rao

    2016-12-01

    Full Text Available BACKGROUND This prospective study aimed to evaluate the incidence of ocular manifestations in head injury and their correlation with the intracranial lesions. MATERIALS AND METHODS A total of 108 consecutive cases of closed head injury admitted in the neurosurgical ward of a tertiary teaching hospital underwent a thorough ophthalmic assessment. Clinical examination, radiological imaging and Glasgow Coma Scale (GCS were applied to grade the severity of injury. RESULTS Total number of 108 patients of head injury were examined of which 38 patients had ocular manifestations (35.18%. Of these, 85.18% were males, 84% of injuries were due to road traffic accidents and 16% were due to fall from a height. The ocular manifestations were as follows- Orbital complications were seen in 6 patients (15.8%. Anterior segment manifestations included black eyes seen in 10 patients (26.3%, subconjunctival haemorrhage in 10.5% of patients (4 patients, corneal involvement in 21% of patients (8 patients and pupillary involvement in 50% of patients (19 patients. Posterior segment manifestations were seen in 26.3% of patients (10 patients and were as follows- Purtscher’s retinopathy in 2 patients and optic atrophy in 5 patients. Cranial nerve palsies were seen in 15 patients (39.47% and supranuclear movement disorders were seen in 3 patients (8%. CONCLUSION Even though, neurosurgeons perform comprehensive clinical examination including eye examination, the main purpose is limited to aid topical diagnosis of neurological lesions. This study emphasises the importance of a detailed eye examination by an ophthalmologist to prevent irreversible visual loss in addition to aiding in the neurological diagnosis. Pupillary involvement, papilloedema and ocular motor paresis pointed to a more severe head injury. This observational prospective study helped us to correlate the severity of head injuries in association with ocular findings in patients admitted in neurosurgical ward

  5. Tolerance of the Head and Neck to -Gx Inertial Loading of the Head

    Science.gov (United States)

    1981-03-09

    cervical muscles reduced the inci- dence of "concussion" symptons produced in this animal, Collars on monkeys subjected to flexion producing occipital...muscles reduced the incidence of "concussion" symptoms produced in this animal. Collars on monkeys subjected to flexion producing occipital impacts, were...4 In a repeat run to determine what caused the losA of un- consciousness in Run 133, Stapp, with head held down to aviod amplification of head

  6. Head injury - first aid

    Science.gov (United States)

    ... medlineplus.gov/ency/article/000028.htm Head injury - first aid To use the sharing features on this page, ... a concussion can range from mild to severe. First Aid Learning to recognize a serious head injury and ...

  7. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... the head is typically used to detect: bleeding, brain injury and skull fractures in patients with head injuries. ... hard time staying still, are claustrophobic or have chronic pain, you may find a CT exam to ...

  8. Head and face reconstruction

    Science.gov (United States)

    ... medlineplus.gov/ency/article/002980.htm Head and face reconstruction To use the sharing features on this page, please enable JavaScript. Head and face reconstruction is surgery to repair or reshape deformities ...

  9. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... the limitations of CT Scanning of the Head? What is CT Scanning of the Head? Computed tomography, ... than regular radiographs (x-rays). top of page What are some common uses of the procedure? CT ...

  10. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... for Brain Tumors Radiation Therapy for Head and Neck Cancer Others American Stroke Association National Stroke Association ... Computer Tomography (CT) Safety During Pregnancy Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine ...

  11. Newborn head molding

    Science.gov (United States)

    Newborn cranial deformation; Molding of the newborn's head; Neonatal care - head molding ... The bones of a newborn baby's skull are soft and flexible, with gaps between the plates of bone. The spaces between the bony plates of ...

  12. Porcine head response to blast

    Directory of Open Access Journals (Sweden)

    Jay eShridharani

    2012-05-01

    Full Text Available Recent studies have shown an increase in the frequency of traumatic brain injuries related to blast exposure. However, the mechanisms that cause blast neurotrauma are unknown. Blast neurotrauma research using computational models has been one method to elucidate that response of the brain in blast, and to identify possible mechanical correlates of injury. However, model validation against experimental data is required to ensure that the model output is representative of in vivo biomechanical response. This study exposed porcine subjects to primary blast overpressures generated using a compressed-gas shock tube. Shock tube blasts were directed to the unprotected head of each animal while the lungs and thorax were protected using ballistic protective vests similar to those employed in theater. The test conditions ranged from 110-740 kPa peak incident overpressure with scaled durations from 1.3-6.9 ms and correspond approximately with a 50% injury risk for brain bleeding and apnea in a ferret model scaled to porcine exposure. The bulk head acceleration and the pressure at the surface of the head and in the cranial cavity were measured. Immediately after the blast, 5 of the 20 animals tested were apneic. Three subjects recovered without intervention within thirty seconds and the remaining two recovered within 8 minutes following bagging and administration of the respiratory stimulant doxapram. Gross examination of the brain revealed no indication of bleeding. Intracranial pressures ranged from 80-685 kPa as a result of the blast and were notably lower than the shock tube reflected pressures of 300-2830 kPa, indicating pressure attenuation by the skull up to a factor of 8.4. Peak head accelerations were measured from 385-3845 G’s and were well correlated with peak incident overpressure (R2=0.90. One standard deviation corridors for the surface pressure, intracranial pressure, and head acceleration are presented to provide experimental data for

  13. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... limitations of CT Scanning of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a ... top of page What are some common uses of the procedure? CT scanning of the head is ...

  14. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Computed tomography (CT) of the head uses special x-ray equipment to help assess head injuries, severe headaches, dizziness, and other symptoms of ... content. Related Articles and Media Radiation Dose in X-Ray and CT ... Perfusion of the Head CT Angiography (CTA) Stroke Brain Tumors Computer Tomography ( ...

  15. Age-specific average head template for typically developing 6-month-old infants.

    Directory of Open Access Journals (Sweden)

    Lisa F Akiyama

    Full Text Available Due to the rapid anatomical changes that occur within the brain structure in early human development and the significant differences between infant brains and the widely used standard adult templates, it becomes increasingly important to utilize appropriate age- and population-specific average templates when analyzing infant neuroimaging data. In this study we created a new and highly detailed age-specific unbiased average head template in a standard MNI152-like infant coordinate system for healthy, typically developing 6-month-old infants by performing linear normalization, diffeomorphic normalization and iterative averaging processing on 60 subjects' structural images. The resulting age-specific average templates in a standard MNI152-like infant coordinate system demonstrate sharper anatomical detail and clarity compared to existing infant average templates and successfully retains the average head size of the 6-month-old infant. An example usage of the average infant templates transforms magnetoencephalography (MEG estimated activity locations from MEG's subject-specific head coordinate space to the standard MNI152-like infant coordinate space. We also created a new atlas that reflects the true 6-month-old infant brain anatomy. Average templates and atlas are publicly available on our website (http://ilabs.washington.edu/6-m-templates-atlas.

  16. Detail jako komponenta celku

    OpenAIRE

    Říhová, Kristýna

    2009-01-01

    The thesis is divided into 4 conceptual chapters which closely analyse a specific work with detail in the art from the second half of the 20th century. The chapters are named as follows: "Focus on detail", "Lack of detail", "Changes through detail", "Detail as a whole". Every conceptual chapter embodies a didactic part that casts light on deviations from the artistic stereotype "Detail as a component of the ensemble". Own painting, specially designed for the thesis, is analysed in the chapter...

  17. Barron's SAT subject test

    CERN Document Server

    Jansen, MA, Robert

    2016-01-01

    Includes one diagnostic test and three complete tests, all questions answered and explained, self-assessment guides, and subject reviews. Also features test strategies, QR codes to short instructional videos, and a detailed appendix with equations, physical constants, and a basic math review.

  18. Vestibulopathy and age effects on head stability during chair rise.

    Science.gov (United States)

    McGibbon, C A; Krebs, D E; Scarborough, D M

    2001-01-01

    It is unknown how vestibular dysfunction and age differentially affect balance control during functional activities. The objective of this study was to gain insight into the effects of age and vestibulopathy on head control when rising from a chair. Head relative to trunk (head-on-trunk) sagittal plane angular and linear control strategies were studied in patients with bilateral vestibular hypofunction (BVH) and in healthy subjects aged 30-80 years. A two-way analysis of variance was used to compare head-on-trunk kinematics by age (young vs elderly) and diagnosis (healthy vs BVH) at the time of liftoff from the seat. Angular control strategies differed with age but not diagnosis: young (healthy and BVH) subjects stabilized head rotations in space while elderly (healthy and BVH) subjects stabilized head rotations on the trunk. In contrast, linear control strategies differed by diagnosis but not age: BVH subjects (young and old) allowed a greater rate of head-on-trunk translation while healthy subjects (young and old) inhibited such translations. Young BVH subjects stabilized head-in-space rotations (as did young healthy subjects) without a functioning vestibular system, suggesting cervicocollic reflex and/or other sensory compensation for vestibular loss. Elderly BVH subjects stabilized head rotation with respect to the trunk, as did healthy elders, but did not stabilize head-on-trunk translations, suggesting a reliance on passive mechanical responses of the neck to sense head movements. We conclude that compensation strategies used by patients with vestibulopathy are age-dependent and appear to be more tractable in the younger BVH patient.

  19. Magnetic Resonance Imaging (MRI) -- Head

    Science.gov (United States)

    ... News Physician Resources Professions Site Index A-Z Magnetic Resonance Imaging (MRI) - Head Magnetic resonance imaging (MRI) of the head ... limitations of MRI of the Head? What is MRI of the Head? Magnetic resonance imaging (MRI) is ...

  20. Eye-Head Coordination for Visual Cognitive Processing

    Science.gov (United States)

    Fang, Yu; Nakashima, Ryoichi; Matsumiya, Kazumichi; Kuriki, Ichiro; Shioiri, Satoshi

    2015-01-01

    We investigated coordinated movements between the eyes and head (“eye-head coordination”) in relation to vision for action. Several studies have measured eye and head movements during a single gaze shift, focusing on the mechanisms of motor control during eye-head coordination. However, in everyday life, gaze shifts occur sequentially and are accompanied by movements of the head and body. Under such conditions, visual cognitive processing influences eye movements and might also influence eye-head coordination because sequential gaze shifts include cycles of visual processing (fixation) and data acquisition (gaze shifts). In the present study, we examined how the eyes and head move in coordination during visual search in a large visual field. Subjects moved their eyes, head, and body without restriction inside a 360° visual display system. We found patterns of eye-head coordination that differed those observed in single gaze-shift studies. First, we frequently observed multiple saccades during one continuous head movement, and the contribution of head movement to gaze shifts increased as the number of saccades increased. This relationship between head movements and sequential gaze shifts suggests eye-head coordination over several saccade-fixation sequences; this could be related to cognitive processing because saccade-fixation cycles are the result of visual cognitive processing. Second, distribution bias of eye position during gaze fixation was highly correlated with head orientation. The distribution peak of eye position was biased in the same direction as head orientation. This influence of head orientation suggests that eye-head coordination is involved in gaze fixation, when the visual system processes retinal information. This further supports the role of eye-head coordination in visual cognitive processing. PMID:25799510

  1. A Neonatal Bimodal MR-CT Head Template.

    Directory of Open Access Journals (Sweden)

    Sona Ghadimi

    Full Text Available Neonatal MR templates are appropriate for brain structural analysis and spatial normalization. However, they do not provide the essential accurate details of cranial bones and fontanels-sutures. Distinctly, CT images provide the best contrast for bone definition and fontanels-sutures. In this paper, we present, for the first time, an approach to create a fully registered bimodal MR-CT head template for neonates with a gestational age of 39 to 42 weeks. Such a template is essential for structural and functional brain studies, which require precise geometry of the head including cranial bones and fontanels-sutures. Due to the special characteristics of the problem (which requires inter-subject inter-modality registration, a two-step intensity-based registration method is proposed to globally and locally align CT images with an available MR template. By applying groupwise registration, the new neonatal CT template is then created in full alignment with the MR template to build a bimodal MR-CT template. The mutual information value between the CT and the MR template is 1.17 which shows their perfect correspondence in the bimodal template. Moreover, the average mutual information value between normalized images and the CT template proposed in this study is 1.24±0.07. Comparing this value with the one reported in a previously published approach (0.63±0.07 demonstrates the better generalization properties of the new created template and the superiority of the proposed method for the creation of CT template in the standard space provided by MR neonatal head template. The neonatal bimodal MR-CT head template is freely downloadable from https://www.u-picardie.fr/labo/GRAMFC.

  2. Expanding subjectivities

    DEFF Research Database (Denmark)

    Lundgaard Andersen, Linda; Soldz, Stephen

    2012-01-01

    A major theme in recent psychoanalytic thinking concerns the use of therapist subjectivity, especially “countertransference,” in understanding patients. This thinking converges with and expands developments in qualitative research regarding the use of researcher subjectivity as a tool to understa...

  3. Supernumerary heads of biceps brachii muscle in South Indian ...

    African Journals Online (AJOL)

    We studied 40 arms of 20 adult formalin fixed cadavers in the Department of Anatomy, Kasturba Medical College, Manipal, India. The presence of number of additional heads and their details of attachments were studied. We observed presence of supernumerary heads of biceps brachii in 6 (15%) cases, in which having ...

  4. Head Injuries in Soccer.

    Science.gov (United States)

    Myrick, Karen M

    2016-07-01

    Soccer is currently the most popular and fastest growing sport worldwide, with approximately 265 million registered soccer players existing around the world. The popularity of the sport, coupled with the high incidence of 18.8-21.5 head injuries per 1,000 player hours reported, make it essential that clinicians, coaches, and the athletes, have a solid understanding of head injuries. The successful rehabilitation of athletes with head injuries relies upon early and accurate identification strategies and implementation of appropriate return to play measures across all areas in the continuum of care. Soccer is a frequently played sport, and head injuries are common. Therefore, it is imperative that clinicians, coaches, and the athletes themselves have a solid understanding of head injury prevention, diagnosis, and treatment options. The purpose of this article was to provide rehabilitation nurses with current information regarding frequently occurring head injuries in the widespread sport of soccer. © 2015 Association of Rehabilitation Nurses.

  5. Probing the mechanism of saccade-associated head movements through observations of head movement propensity and cognition in the elderly.

    Science.gov (United States)

    Thumser, Zachary C; Adams, Nancy L; Lerner, Alan J; Stahl, John S

    2010-05-01

    Humans may accomplish gaze shifts by eye-only saccades or combined eye-head saccades. The mechanisms that determine whether the head moves remain poorly understood. Many observations can be explained if phylogenetically ancient circuits generate eye-head saccades by default and frontal cerebral structures interrupt this synergy when eye-only saccades are preferable. Saccade-associated head movements have been reported to increase in the elderly. To test the hypothesis of frontal inhibition of head movements, we investigated whether the increase is associated with a decline in frontal cognitive function. We measured head movement tendencies and cognition in volunteers aged 61-80. Measures of head movement tendency included the customary range of eye eccentricity, customary range of head eccentricity, range of target eccentricities evoking predominantly eye-only saccades, and two measures of head amplitude variation as a function of target eccentricity. Cognitive measures encompassed verbal fluency, verbal memory, non-verbal memory, and executive function. There was no correlation between cognition and any measure of head movement tendency. We combined these elderly data with measurements of head movements in a group aged 21-67 and found mildly reduced, not increased, head movement tendencies with age. However, when confronted with a task that could be accomplished without moving the head, young subjects were more likely to cease all head movements. While inconclusive regarding the hypothesis of inhibition of saccade-associated head movements by cerebral structures, the results indicate the need to distinguish between mechanisms that define head movement tendencies and mechanisms that adapt head motion to the geometry of a specific task.

  6. Head-to-toe whole-body MRI in psoriatic arthritis, axial spondyloarthritis and healthy subjects: first steps towards global inflammation and damage scores of peripheral and axial joints.

    Science.gov (United States)

    Poggenborg, René Panduro; Pedersen, Susanne Juhl; Eshed, Iris; Sørensen, Inge Juul; Møller, Jakob M; Madsen, Ole Rintek; Thomsen, Henrik S; Østergaard, Mikkel

    2015-06-01

    By whole-body MRI (WBMRI), we aimed to examine the frequency and distribution of inflammatory and structural lesions in PsA patients, SpA patients and healthy subjects (HSs), to introduce global WBMRI inflammation/damage scores, and to assess WBMRI's reproducibility and correlation with conventional MRI (convMRI). WBMRI (3.0-T) of patients with peripheral PsA (n = 18) or axial SpA (n = 18) and of HS (n = 12) was examined for proportion of evaluable features (readability) and the presence and pattern of lesions in axial and peripheral joints. Furthermore, global WBMRI scores of inflammation and structural damage were constructed, and WBMRI findings were compared with clinical measures and convMRI (SpA/HS: spine and SI joints; PsA/HS: hand). The readability (92-100%) and reproducibility (intrareader intraclass correlation coefficient: 0.62-1.0) were high in spine/SI joint, but lower in the distal peripheral joints. Wrists, shoulders, knees, ankles and MTP joints were most commonly involved, with frequency of synovitis > bone marrow oedema (BMO) > erosion. WBMRI global BMO scores of peripheral and axial joints were higher in PsA {median 7 [interquartile range (IQR) 3-15]} and SpA [8 (IQR 2-14)] than in HSs [2.5 (IQR 1-4.5)], both P joint scores were ρ = 0.20-0.78. WBMRI allows simultaneous assessment of peripheral and axial joints in PsA and SpA, and the distribution of inflammatory and structural lesions and global scores can be determined. The study strongly encourages further development and longitudinal testing of WBMRI techniques and assessment methods in PsA and SpA. © The Author 2014. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  7. 5 CFR 370.107 - Details to small business concerns.

    Science.gov (United States)

    2010-01-01

    ... INFORMATION TECHNOLOGY EXCHANGE PROGRAM § 370.107 Details to small business concerns. (a) The head of each... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Details to small business concerns. 370... organizations in each calendar year, at least 20 percent are to small business concerns, in accordance with 5 U...

  8. Local address and emergency contact details

    CERN Multimedia

    2013-01-01

    The HR Department would like to remind members of the personnel that they are responsible for ensuring that their personal data concerning local address and preferred emergency contact details remains valid and up-to-date.   Both are easily accessible via the links below: Local address: https://edh.cern.ch/Document/Personnel/LocalAddressChange   Emergency contacts: https://edh.cern.ch/Document/Personnel/EC   Please take a few minutes to check your details and modify if necessary. Thank you in advance. HR Department Head Office

  9. Calibration algorithm for eyetracking with unrestricted head movement.

    Science.gov (United States)

    Johnson, Jeffrey S; Liu, Li; Thomas, Geb; Spencer, John P

    2007-02-01

    This article reports a calibration procedure that enables researchers to track movements of the eye while allowing relatively unrestricted head and/or body movement. The eye-head calibration algorithm calculates fixation point based on eye-position data acquired by a head-mounted eyetracker and corresponding head-position data acquired by a 3-D motion-tracking system. In a single experiment, we show that this procedure provides robust eye-position estimates while allowing free head movement. Although several companies offer ready-made systems for this purpose, there is no literature available that makes it possible for researchers to explore the details of the calibration procedures used by these systems. By making such details available, we hope to facilitate the development of cost-effective, nonproprietary eyetracking solutions.

  10. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Computed tomography (CT) of the head uses special x-ray equipment to help assess head injuries, severe headaches, ... is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside ...

  11. Head Injuries in Children

    Science.gov (United States)

    Pennington, Nicole

    2010-01-01

    School nurses play a crucial role in injury prevention and initial treatment when injuries occur at school. The role of school nurses includes being knowledgeable about the management of head injuries, including assessment and initial treatment. The school nurse must be familiar with the outcomes of a head injury and know when further evaluation…

  12. Abnormal Head Position

    Science.gov (United States)

    ... non-ocular causes of an abnormal head position? Congenital shortening of the neck muscles (sternocleidomastoid) can cause a head tilt. This is ... amblyopia) are other treatment alternatives. Physical therapy helps congenital torticollis from tight neck muscles. Updated ... Terms & Conditions Most Common ...

  13. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... the limitations of CT Scanning of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of the inside of ...

  14. Head Start in Action.

    Science.gov (United States)

    Riley, Clara M. D.; Epps, Frances M. J.

    Records and observations from a summer Head Start program, conducted in Los Angeles by Delta Sigma Theta, are delineated in this book. It relates firsthand experiences of the participating personnel as they developed and implemented a Head Start program for some 300 children. The book is divided into three sections. Section I,…

  15. Porcine head response to blast.

    Science.gov (United States)

    Shridharani, Jay K; Wood, Garrett W; Panzer, Matthew B; Capehart, Bruce P; Nyein, Michelle K; Radovitzky, Raul A; Bass, Cameron R 'dale'

    2012-01-01

    Recent studies have shown an increase in the frequency of traumatic brain injuries related to blast exposure. However, the mechanisms that cause blast neurotrauma are unknown. Blast neurotrauma research using computational models has been one method to elucidate that response of the brain in blast, and to identify possible mechanical correlates of injury. However, model validation against experimental data is required to ensure that the model output is representative of in vivo biomechanical response. This study exposes porcine subjects to primary blast overpressures generated using a compressed-gas shock tube. Shock tube blasts were directed to the unprotected head of each animal while the lungs and thorax were protected using ballistic protective vests similar to those employed in theater. The test conditions ranged from 110 to 740 kPa peak incident overpressure with scaled durations from 1.3 to 6.9 ms and correspond approximately with a 50% injury risk for brain bleeding and apnea in a ferret model scaled to porcine exposure. Instrumentation was placed on the porcine head to measure bulk acceleration, pressure at the surface of the head, and pressure inside the cranial cavity. Immediately after the blast, 5 of the 20 animals tested were apneic. Three subjects recovered without intervention within 30 s and the remaining two recovered within 8 min following respiratory assistance and administration of the respiratory stimulant doxapram. Gross examination of the brain revealed no indication of bleeding. Intracranial pressures ranged from 80 to 390 kPa as a result of the blast and were notably lower than the shock tube reflected pressures of 300-2830 kPa, indicating pressure attenuation by the skull up to a factor of 8.4. Peak head accelerations were measured from 385 to 3845 G's and were well correlated with peak incident overpressure (R(2) = 0.90). One SD corridors for the surface pressure, intracranial pressure (ICP), and head acceleration are

  16. Origin and evolution of the panarthropod head - A palaeobiological and developmental perspective.

    Science.gov (United States)

    Ortega-Hernández, Javier; Janssen, Ralf; Budd, Graham E

    2017-05-01

    The panarthropod head represents a complex body region that has evolved through the integration and functional specialization of the anterior appendage-bearing segments. Advances in the developmental biology of diverse extant organisms have led to a substantial clarity regarding the relationships of segmental homology between Onychophora (velvet worms), Tardigrada (water bears), and Euarthropoda (e.g. arachnids, myriapods, crustaceans, hexapods). The improved understanding of the segmental organization in panarthropods offers a novel perspective for interpreting the ubiquitous Cambrian fossil record of these successful animals. A combined palaeobiological and developmental approach to the study of the panarthropod head through deep time leads us to propose a consensus hypothesis for the intricate evolutionary history of this important tagma. The contribution of exceptionally preserved brains in Cambrian fossils - together with the recognition of segmentally informative morphological characters - illuminate the polarity for major anatomical features. The euarthropod stem-lineage provides a detailed view of the step-wise acquisition of critical characters, including the origin of a multiappendicular head formed by the fusion of several segments, and the transformation of the ancestral protocerebral limb pair into the labrum, following the postero-ventral migration of the mouth opening. Stem-group onychophorans demonstrate an independent ventral migration of the mouth and development of a multisegmented head, as well as the differentiation of the deutocerebral limbs as expressed in extant representatives. The anterior organization of crown-group Tardigrada retains several ancestral features, such as an anterior-facing mouth and one-segmented head. The proposed model aims to clarify contentious issues on the evolution of the panarthropod head, and lays the foundation from which to further address this complex subject in the future. Copyright © 2016 Elsevier Ltd. All

  17. SUBJECT INDEX

    Indian Academy of Sciences (India)

    Subject Index. Variation of surface electric field during geomagnetic disturbed period at Maitri, Antarctica. 1721. Geomorphology. A simple depression-filling method for raster and irregular elevation datasets. 1653. Decision Support System integrated with Geographic. Information System to target restoration actions in water-.

  18. On the subject-predicate relation and subject agreement in SiSwati ...

    African Journals Online (AJOL)

    The paper also argues that subject agreement is a purely syntactic phenomenon that takes place in a spec-head relationship. It proposes that subject agreement is triggered by verbs, and that multiple subject agreement within a clause occurs when auxiliary verbs iterate. The theoretical consequences of the analysis ...

  19. Driving with head-slaved camera system

    NARCIS (Netherlands)

    Oving, A.B.; Erp, J.B.F. van

    2001-01-01

    In a field experiment, we tested the effectiveness of a head-slaved camera system for driving an armoured vehicle under armour. This system consists of a helmet-mounted display (HMD), a headtracker, and a motion platform with two cameras. Subjects performed several driving tasks on paved and in

  20. Characterization of Closed Head Impact Injury in Rat

    Directory of Open Access Journals (Sweden)

    Yi Hua

    2015-01-01

    Full Text Available The closed head impact (CHI rat models are commonly used for studying the traumatic brain injury. The impact parameters vary considerably among different laboratories, making the comparison of research findings difficult. In this work, numerical CHI experiments were conducted to investigate the sensitivities of intracranial responses to various impact parameters (e.g., impact depth, velocity, and position; impactor diameter, material, and shape. A three-dimensional finite element rat head model with anatomical details was subjected to impact loadings. Results revealed that impact depth and impactor shape were the two leading factors affecting intracranial responses. The influence of impactor diameter was region-specific and an increase in impactor diameter could substantially increase tissue strains in the region which located directly beneath the impactor. The lateral impact could induce higher strains in the brain than the central impact. An indentation depth instead of impact depth would be appropriate to characterize the influence of a large deformed rubber impactor. The experimentally observed velocity-dependent injury severity could be attributed to the “overshoot” phenomenon. This work could be used to better design or compare CHI experiments.

  1. 1 CFR 21.19 - Composition of part headings.

    Science.gov (United States)

    2010-01-01

    ... 1 General Provisions 1 2010-01-01 2010-01-01 false Composition of part headings. 21.19 Section 21.19 General Provisions ADMINISTRATIVE COMMITTEE OF THE FEDERAL REGISTER PREPARATION, TRANSMITTAL, AND PROCESSING OF DOCUMENTS PREPARATION OF DOCUMENTS SUBJECT TO CODIFICATION General Headings § 21.19 Composition...

  2. Learning people's names following severe closed-head injury

    NARCIS (Netherlands)

    Milders, M.V.

    Although problems remembering people's names rank highly among the subjective complaints of patients with closed-head injuries, very few studies have examined their memory for people's names by objective measurements. An experiment is reported in which patients with severe closed-head injuries and

  3. Parental determinants of offspring head circumference using a ...

    African Journals Online (AJOL)

    The baby's head circumference was measured immediately after birth. The data were subjected to multivariate analysis. Results: The parental variables that were most predictive of babies' head circumference were mid-parental weight, maternal height, maternal weight gain during pregnancy and maternal age. Conclusion: ...

  4. Baseline head in Olkiluoto

    Energy Technology Data Exchange (ETDEWEB)

    Ahokas, H.; Tammisto, E.; Lehtimaeki, T. (Poeyry Environment Oy, Vantaa (Finland))

    2008-11-15

    As part of the programme for the final disposal of the spent nuclear fuel, Posiva Oy investigates the prevailing hydrological conditions on Olkiluoto island. The hydrological investigations have included several kinds of hydrological tests such as measurements of hydraulic conductivity by flow logging and a double-packer tool as well as interference tests by pumping, in order to study the hydraulic connections between the drillholes. In addition, long-term monitoring of groundwater level and groundwater head as well as measurements of flow conditions in open drillholes, groundwater salinity (in situ EC), precipitation (including snow), sea-water level, surface flow (runoff) etc. have been part of the investigation programme aiming at the characterization of the bedrock. The data have been used in the compilation of deterministic hydro-zones and hydraulic properties for numerical flow modelling to study the flow pattern on Olkiluoto island. In addition, the compiled bedrock models have been used in the planning of the repository layout and in the analyses of the transport of radionuclides and the functionality of engineered barriers. This report focuses on the measurements of groundwater head by means of multi-packers and in connection with flow loggings. The determination of the undisturbed groundwater head (baseline head) in terms of the in situ fresh water head is the main goal of this report. The density of groundwater is strongly dependent on salinity and due to the saline groundwater deep in the bedrock in Olkiluoto the term fresh water head is used instead of hydraulic head. Taking the density of groundwater into account, the gradient of the residual pressure, which actually causes groundwater flow can be calculated. The measured and calculated heads are converted into corresponding in situ fresh water heads, which correspond to the water level (metres above sea level) in the hose that runs from the packed-off section to the ground surface. This means that

  5. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... the limitations of MRI of the Head? What is MRI of the Head? Magnetic resonance imaging (MRI) is a noninvasive ... top of page What are some common uses of the procedure? MR imaging of the head is ...

  6. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... MRI of the Head? What is MRI of the Head? Magnetic resonance imaging (MRI) is a noninvasive ... of page What are some common uses of the procedure? MR imaging of the head is performed ...

  7. Future Details of Architecture

    OpenAIRE

    Garcia, Mark

    2014-01-01

    Despite the exaggerated news of the untimely ′death of the detail′ by Greg Lynn, the architectural detail is now more lifelike and active than ever before. In this era of digital design and production technologies, new materials, parametrics, building information modeling (BIM), augmented realities and the nano–bio–information–computation consilience, the detail is now an increasingly vital force in architecture. Though such digitally designed and produced details are diminishing in size to t...

  8. Subject-verb number (disagreement

    Directory of Open Access Journals (Sweden)

    Daniela Isac

    2010-01-01

    Full Text Available This paper discusses cases of number mismatches between subjects and verbs. The main proposal is that subject-verb agreement is not in number but in a different feature, that we call Cardinality. Cardinality is a feature of DPs that is computed on the basis of number features and collectivity features carried by various heads in the DP. The “computation” of the Cardinality feature proceeds internal to the feature matrix of one lexical item - the D. The values of the number and collectivity features carried by various heads in the DP are transferred to the D by means of a feature checking mechanism and the value of the Cardinality feature is then derived from these.

  9. The Subject Headings of the Morris Swett Library, USAFAS. Revised.

    Science.gov (United States)

    1980-05-15

    Sparrow) S7 (Sparrow I) S71 (Sparrow II) S72 (Sparrow III) S73 ( Sprint ) S78 (Talos-W) T2 (Terrier) T3 (Terrier iB) T31 (TOW) (Typhoon) T9 (XSSM-A-1... VOLLEYBALL (GV 1017) VOLTAGE DIVIDERS VOLTOHMETER (TK 7879.2) VOLTURNO, BATTLE OF THE, 1943 (D 763.161 V7) VOLUNTEERS, MILITARY (UB 323) VOODOOISM

  10. Variations in the Presentation of Aphasia in Patients with Closed Head Injuries

    OpenAIRE

    Kavanagh, Dara Oliver; Lynam, Conor; Düerk, Thorsten; Casey, Mary; Eustace, Paul W.

    2010-01-01

    Impairments of speech and language are important consequences of head injury as they compromise interaction between the patient and others. A large spectrum of communication deficits can occur. There are few reports in the literature of aphasia following closed head injury despite the common presentation of closed head injury. Herein we report two cases of closed head injuries with differing forms of aphasia. We discuss their management and rehabilitation and present a detailed literature rev...

  11. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... you! Do you have a personal story about radiology? Share your patient story here Images × Image Gallery ... Pregnancy Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to ...

  12. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Tomography (CT) Safety During Pregnancy Head and Neck Cancer X-ray, Interventional Radiology and Nuclear ... or other physician. To locate a medical imaging or radiation oncology provider in your community, you can search the ...

  13. Overview of Head Injuries

    Science.gov (United States)

    ... brain. If the head injury is very severe, mechanical ventilation may be used. Doctors control blood pressure and minimize the amount of brain swelling by adjusting the amount of intravenous fluids given and sometimes by giving intravenous drugs that ...

  14. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... be necessary. Your doctor will explain the exact reason why another exam is requested. Sometimes a follow- ... limitations of CT Scanning of the Head? A person who is very large may not fit into ...

  15. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... medically necessary because of potential risk to the baby. This risk is, however, minimal with head CT ... intravenous contrast indicate mothers should not breastfeed their babies for 24-48 hours after contrast medium is ...

  16. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... assess head injuries, severe headaches, dizziness, and other symptoms of aneurysm, bleeding, stroke and brain tumors. It ... within the brain shortly after a patient exhibits symptoms of a stroke. a stroke, especially with a ...

  17. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... scans in children should always be done with low-dose technique. top of page What are the ... page Additional Information and Resources RTAnswers.org Radiation Therapy for Brain Tumors Radiation Therapy for Head and ...

  18. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... this tunnel. Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite ... medically necessary because of potential risk to the baby. This risk is, however, minimal with head CT ...

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... head CT scanning. Manufacturers of intravenous contrast indicate mothers should not breastfeed their babies for 24-48 ...

  20. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... special x-ray equipment to help assess head injuries, severe headaches, dizziness, and other symptoms of aneurysm, ... cancer. In emergency cases, it can reveal internal injuries and bleeding quickly enough to help save lives. ...

  1. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... used to detect: bleeding, brain injury and skull fractures in patients with head injuries. bleeding caused by ... a few seconds, and even faster in small children. Such speed is beneficial for all patients but ...

  2. TCGA head Neck

    Science.gov (United States)

    Investigators with The Cancer Genome Atlas (TCGA) Research Network have discovered genomic differences – with potentially important clinical implications – in head and neck cancers caused by infection with the human papillomavirus (HPV).

  3. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... for Head and Neck Cancer Others American Stroke Association National Stroke Association top of page This page ...

  4. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... sometimes compared to looking into a loaf of bread by cutting the loaf into thin slices. When ... for Brain Tumors Radiation Therapy for Head and Neck Cancer Others American Stroke Association National Stroke Association ...

  5. Early Head Start Evaluation

    Data.gov (United States)

    U.S. Department of Health & Human Services — Longitudinal information from an evaluation where children were randomly assigned to Early Head Start or community services as usual;direct assessments and...

  6. Head Start Impact Study

    Data.gov (United States)

    U.S. Department of Health & Human Services — Nationally representative, longitudinal information from an evaluation where children were randomly assigned to Head Start or community services as usual;direct...

  7. Head CT scan

    Science.gov (United States)

    ... be: Stored Viewed on a monitor Printed on film Three-dimensional models of the head area can ... when you have certain other signs or symptoms Hearing loss (in some people) Symptoms of damage to ...

  8. Head and Neck Cancer

    Science.gov (United States)

    ... increase the risk of head and neck cancer. Environmental or occupational inhalants. Inhaling asbestos, wood dust, paint ... from the American Society of Clinical Oncology. Review dictionary articles to help understand medical phrases and terms ...

  9. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... used to detect: bleeding, brain injury and skull fractures in patients with head injuries. bleeding caused by ... are present in the paranasal sinuses. plan radiation therapy for cancer of the brain or other tissues. ...

  10. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... used to detect: bleeding, brain injury and skull fractures in patients with head injuries. bleeding caused by ... is also performed to: evaluate the extent of bone and soft tissue damage in patients with facial ...

  11. Subject cataloguing of the works of fiction at the National and University Library

    Directory of Open Access Journals (Sweden)

    Tatjana Kovač

    2006-01-01

    Full Text Available The article reviews the principles of construction and policies of application of subject headings to works of fiction at the National and University Library in Ljubljana, Slovenia. The records are created in COMARC format, and the literary type, genre and the language of a document are each assigned a code, whereas literature is also indexed by using UDC class numbers. The principles for constructing and assigning subject headings for fiction are in accordance with the IFLA Principles Underlying Subject Heading Languages, and the rules of the Slovenian General List of Subject Headings (2002. The author presents the general and more specific rules and procedures for the construction of subject headings. Most frequently used subject headings for the works of fiction are name, topical or geographic headings.

  12. Detail and survey radioautographs

    Energy Technology Data Exchange (ETDEWEB)

    Wainwright, Wm.W.

    1949-04-19

    The much used survey or contact type of radioautograph is indispensible for a study of the gross distribution of radioactive materials. A detail radioautograph is equally indispensible. The radioautograph makes possible the determination of plutonium with respect to cells. Outlines of survey and detail techniques are given.

  13. Large-scale transcriptome analyses reveal new genetic marker candidates of head, neck, and thyroid cancer

    DEFF Research Database (Denmark)

    Reis, Eduardo M; Ojopi, Elida P B; Alberto, Fernando L

    2005-01-01

    with detailed clinical data about tumor origin, the information reported here is now publicly available on a dedicated Web site as a resource for further biological investigation. This first in silico reconstruction of the head, neck, and thyroid transcriptomes points to a wealth of new candidate markers......A detailed genome mapping analysis of 213,636 expressed sequence tags (EST) derived from nontumor and tumor tissues of the oral cavity, larynx, pharynx, and thyroid was done. Transcripts matching known human genes were identified; potential new splice variants were flagged and subjected to manual...... curation, pointing to 788 putatively new alternative splicing isoforms, the majority (75%) being insertion events. A subset of 34 new splicing isoforms (5% of 788 events) was selected and 23 (68%) were confirmed by reverse transcription-PCR and DNA sequencing. Putative new genes were revealed, including...

  14. Effects of Soccer Heading on Brain Structure and Function

    Science.gov (United States)

    Rodrigues, Ana Carolina; Lasmar, Rodrigo Pace; Caramelli, Paulo

    2016-01-01

    Soccer is the most popular sport in the world, with more than 265 million players worldwide, including professional and amateur ones. Soccer is unique in comparison to other sports, as it is the only sport in which participants purposely use their head to hit the ball. Heading is considered as an offensive or defensive move whereby the player’s unprotected head is used to deliberately impact the ball and direct it during play. A soccer player can be subjected to an average of 6–12 incidents of heading the ball per competitive game, where the ball reaches high velocities. Moreover, in practice sessions, heading training, which involves heading the ball repeatedly at low velocities, is common. Although the scientific community, as well as the media, has focused on the effects of concussions in contact sports, the role of subconcussive impacts, as it can occur during heading, has recently gained attention, considering that it may represent an additional mechanism of cumulative brain injury. The purpose of this study is to review the existing literature regarding the effects of soccer heading on brain structure and function. Only in the last years, some investigations have addressed the impact of heading on brain structure, by using neuroimaging techniques. Similarly, there have been some recent studies investigating biochemical markers of brain injury in soccer players. There is evidence of association between heading and abnormal brain structure, but the data are still preliminary. Also, some studies have suggested that subconcussive head impacts, as heading, could cause cognitive impairment, whereas others have not corroborated this finding. Questions persist as to whether or not heading is deleterious to cognitive functioning. Further studies, especially with longitudinal designs, are needed to clarify the clinical significance of heading as a cause of brain injury and to identify risk factors. Such investigations might contribute to the establishment of safety

  15. Effects of soccer heading on brain structure and function

    Directory of Open Access Journals (Sweden)

    Ana Carolina Oliveira Rodrigues

    2016-03-01

    Full Text Available Soccer is the most popular sport in the world, with more than 265 million players worldwide, including professional and amateur ones. Soccer is unique in comparison to other sports, as it is the only sport in which participants purposely use their head to hit the ball. Heading is considered an offensive or defensive move whereby the player’s unprotected head is used to deliberately impact the ball and direct it during play. A soccer player can be subjected to an average of six to twelve incidents of heading the ball per competitive game, where the ball reaches high velocities. Moreover, in practice sessions, heading training, which involves heading the ball repeatedly at low velocities, is common. Although the scientific community, as well as the media, has focused on the effects of concussions in contact sports, the role of subconcussive impacts, as it can occur during heading, has recently gained attention, considering that it may represent an additional mechanism of cumulative brain injury. The purpose of this study is to review the existing literature regarding the effects of soccer heading on brain structure and function. Only in the last years some investigations have addressed the impact of heading on brain structure, by using neuroimaging techniques. Similarly, there have been some recent studies investigating biochemical markers of brain injury in soccer players. There is evidence of association between heading and abnormal brain structure, but the data are still preliminary. Also, some studies have suggested that subconcussive head impacts, as heading, could cause cognitive impairment, whereas others have not corroborated this finding. Questions persist as to whether or not heading is deleterious to cognitive functioning. Further studies, especially with longitudinal designs, are needed to clarify the clinical significance of heading as a cause of brain injury and to identify risk factors. Such investigations might contribute to the

  16. Coordinates of Human Visual and Inertial Heading Perception.

    Directory of Open Access Journals (Sweden)

    Benjamin Thomas Crane

    Full Text Available Heading estimation involves both inertial and visual cues. Inertial motion is sensed by the labyrinth, somatic sensation by the body, and optic flow by the retina. Because the eye and head are mobile these stimuli are sensed relative to different reference frames and it remains unclear if a perception occurs in a common reference frame. Recent neurophysiologic evidence has suggested the reference frames remain separate even at higher levels of processing but has not addressed the resulting perception. Seven human subjects experienced a 2s, 16 cm/s translation and/or a visual stimulus corresponding with this translation. For each condition 72 stimuli (360° in 5° increments were delivered in random order. After each stimulus the subject identified the perceived heading using a mechanical dial. Some trial blocks included interleaved conditions in which the influence of ±28° of gaze and/or head position were examined. The observations were fit using a two degree-of-freedom population vector decoder (PVD model which considered the relative sensitivity to lateral motion and coordinate system offset. For visual stimuli gaze shifts caused shifts in perceived head estimates in the direction opposite the gaze shift in all subjects. These perceptual shifts averaged 13 ± 2° for eye only gaze shifts and 17 ± 2° for eye-head gaze shifts. This finding indicates visual headings are biased towards retina coordinates. Similar gaze and head direction shifts prior to inertial headings had no significant influence on heading direction. Thus inertial headings are perceived in body-centered coordinates. Combined visual and inertial stimuli yielded intermediate results.

  17. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... News Physician Resources Professions Site Index A-Z Magnetic Resonance Imaging (MRI) - Head Magnetic resonance imaging (MRI) of the head ... limitations of MRI of the Head? What is MRI of the Head? Magnetic resonance imaging (MRI) is ...

  18. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... Physician Resources Professions Site Index A-Z Magnetic Resonance Imaging (MRI) - Head Magnetic resonance imaging (MRI) of the head uses a powerful ... Head? What is MRI of the Head? Magnetic resonance imaging (MRI) is a noninvasive medical test that ...

  19. The Importance of Properly Compensating for Head Movements During MEG Acquisition Across Different Age Groups.

    Science.gov (United States)

    Larson, Eric; Taulu, Samu

    2017-03-01

    Unlike EEG sensors, which are attached to the head, MEG sensors are located outside the head surface on a fixed external device. Subject head movements during acquisition thus distort the magnetic field distributions measured by the sensors. Previous studies have looked at the effect of head movements, but no study has comprehensively looked at the effect of head movements across age groups, particularly in infants. Using MEG recordings from subjects ranging in age from 3 months through adults, here we first quantify the variability in head position as a function of age group. We then combine these measured head movements with brain activity simulations to determine how head movements bias source localization from sensor magnetic fields measured during movement. We find that large amounts of head movement, especially common in infant age groups, can result in large localization errors. We then show that proper application of head movement compensation techniques can restore localization accuracy to pre-movement levels. We also find that proper noise covariance estimation (e.g., during the baseline period) is important to minimize localization bias following head movement compensation. Our findings suggest that head position measurement during acquisition and compensation during analysis is recommended for researchers working with subject populations or age groups that could have substantial head movements. This is especially important in infant MEG studies.

  20. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues ... a shorter period of time, resulting in more detail and additional view capabilities. Modern CT scanners are ...

  1. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on ...

  2. Detailed Soils 24K

    Data.gov (United States)

    Kansas Data Access and Support Center — This data set is a digital soil survey and is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The information was...

  3. Visual prosody and speech intelligibility: head movement improves auditory speech perception.

    Science.gov (United States)

    Munhall, K G; Jones, Jeffery A; Callan, Daniel E; Kuratate, Takaaki; Vatikiotis-Bateson, Eric

    2004-02-01

    People naturally move their heads when they speak, and our study shows that this rhythmic head motion conveys linguistic information. Three-dimensional head and face motion and the acoustics of a talker producing Japanese sentences were recorded and analyzed. The head movement correlated strongly with the pitch (fundamental frequency) and amplitude of the talker's voice. In a perception study, Japanese subjects viewed realistic talking-head animations based on these movement recordings in a speech-in-noise task. The animations allowed the head motion to be manipulated without changing other characteristics of the visual or acoustic speech. Subjects correctly identified more syllables when natural head motion was present in the animation than when it was eliminated or distorted. These results suggest that nonverbal gestures such as head movements play a more direct role in the perception of speech than previously known.

  4. Heat Transfer Analysis of a Diesel Engine Head

    OpenAIRE

    M. Diviš; R. Tichánek; M. Španiel

    2003-01-01

    This paper documents the research carried out at the Josef Božek Research Center of Engine and Automotive Engineering dealing with extended numerical stress/deformation analyses of engines parts loaded by heat and mechanical forces. It contains a detailed description of a C/28 series diesel engine head FE model and a discussion of heat transfer analysis tunning and results. The head model consisting of several parts allows a description of contact interaction in both thermal and mechanical an...

  5. Pediatric head injury.

    Science.gov (United States)

    Tulipan, N

    1998-01-01

    Pediatric head injury is a public health problem that exacts a high price from patients, their families and society alike. While much of the brain damage in head-injured patients occurs at the moment of impact, secondary injuries can be prevented by aggressive medical and surgical intervention. Modern imaging devices have simplified the task of diagnosing intracranial injuries. Recent advances in monitoring technology have made it easier to assess the effectiveness of medical therapy. These include intracranial pressure monitoring devices that are accurate and safe, and jugular bulb monitoring which provides a continuous, qualitative measure of cerebral blood flow. The cornerstones of treatment remain hyperventilation and osmotherapy. Despite maximal treatment, however, the mortality and morbidity associated with pediatric head injury remains high. Reduction of this mortality and morbidity will likely depend upon prevention rather than treatment.

  6. [Bionic model for coordinated head-eye motion control].

    Science.gov (United States)

    Mao, Xiaobo; Chen, Tiejun

    2011-10-01

    The relationships between eye movements and head movements of the primate during gaze shifts are analyzed in detail in the present paper. Applying the mechanisms of neurophysiology to engineering domain, we have improved the robot eye-head coordination. A bionic control strategy of coordinated head-eye motion was proposed. The processes of gaze shifts are composed of an initial fast phase followed by a slow phase. In the fast phase saccade eye movements and slow head movements were combined, which cooperate to bring gaze from an initial resting position toward the new target rapidly, while in the slow phase the gaze stability and target fixation were ensured by the action of the vestibulo-ocular reflex (VOR) where the eyes and head rotate by equal amplitudes in opposite directions. A bionic gaze control model was given. The simulation results confirmed the effectiveness of the model by comparing with the results of neurophysiology experiments.

  7. Head and Neck Reconstruction.

    Science.gov (United States)

    Wong, Shannon; Melin, Alyson; Reilly, Debra

    2017-10-01

    Management of head and neck burns involves acute and intermediate phases. Acutely, the goals are establish a secure airway and treat life-threatening injuries. Then, optimize nutrition, assess extent of the burn, perform local wound care, and provide eye protection. Management depends on the degree of the head and neck burn. Postinjury splinting and rehabilitation are vital to healing. After the acute inflammation has resolved and the scars have matured, reconstruction begins with the goals of restoring both function and aesthetics. Reconstruction ranges from simple scar release, to skin grafting, and possibly free flap reconstruction. Copyright © 2017 Elsevier Inc. All rights reserved.

  8. Head first Ajax

    CERN Document Server

    Riordan, Rebecca M

    2008-01-01

    Ajax is no longer an experimental approach to website development, but the key to building browser-based applications that form the cornerstone of Web 2.0. Head First Ajax gives you an up-to-date perspective that lets you see exactly what you can do -- and has been done -- with Ajax. With it, you get a highly practical, in-depth, and mature view of what is now a mature development approach. Using the unique and highly effective visual format that has turned Head First titles into runaway bestsellers, this book offers a big picture overview to introduce Ajax, and then explores the use of ind

  9. A Review of Instrumented Equipment to Investigate Head Impacts in Sport

    OpenAIRE

    PATTON, Declan A.

    2016-01-01

    Contact, collision, and combat sports have more head impacts as compared to noncontact sports; therefore, such sports are uniquely suited to the investigation of head impact biomechanics. Recent advances in technology have enabled the development of instrumented equipment, which can estimate the head impact kinematics of human subjects in vivo. Literature pertaining to head impact measurement devices was reviewed and usage, in terms of validation and field studies, of such devices was discuss...

  10. Clinical measurement of compensatory torsional eye movement during head tilt.

    Science.gov (United States)

    Lim, Han Woong; Kim, Ji Hong; Park, Seung Hun; Oh, Sei Yeul

    2017-03-01

    To measure the degree of compensatory torsional eye movement during head tilt using a fundus photography method. We enrolled 55 healthy subjects who were 20-66 years of age. Fundus photographs were obtained in the presumed baseline position and in stepwise head tilt positions to evaluate ocular torsion using a non-mydriatic fundus camera. Horizontal marks on the nose were photographed simultaneously to evaluate head tilt. Images were analysed using Photoshop to measure the degree of ocular torsion and head tilt. A consistent compensatory torsional eye movement was observed in all subjects during head tilt. The degree of compensatory torsional eye movement showed a positive correlation with the angle of head tilt. Ocular torsional disconjugacy was observed during head tilt, with larger excycloductional eye movement than incycloductional eye movement (4.88 ± 2.91° versus 4.50 ± 2.76°, p eye movement was significantly associated with the degree of head tilt (β = 0.191, p eye movement. Considering the availability of fundus photography in clinical ophthalmology practice, the proposed method can be used as a clinical tool to measure compensatory torsional eye movement. © 2016 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

  11. Epidemiology and management of paediatric head injury in eastern Nepal

    Directory of Open Access Journals (Sweden)

    Agrawal A

    2008-01-01

    Full Text Available Background: In children, majority of the head injuries are minor and management of critically ill children depend on a team approach using well-rehearsed, systematic management protocols that can be implemented within hours after injury. This study was carried out to ascertain the epidemiology and management of know the demographic profile and etiology of paediatric head injury in our setting, to know the clinical and radiological characteristics of head injury patients and to know the treatment options and outcome in paediatric head injuries. Patients and Methods: Details of all children (age < 16 years with head injury seen in 1 year from 01.04.2005 to 31.03.2006 were retrospectively reviewed. Demographic profile, clinical details, investigations, treatment offered, and outcome were noted in a proforma. All data were analyzed by appropriate SPSS 11.0 statistical software tools. Results: There were total 43 patients. Young male children were more commonly affected in present series with a mean age of 7.67 years (median - 5.010 years, range 6 months-16 year. Fall (65.11% was the most common mode of injury followed by road traffic accidents (RTAs (25.6%. Mild head injuries (65.11% were most common. Most common complaint was loss of consciousness and all the patients with severe head injury presented loss of consciousness. All patients with mild head showed good recovery; with moderate head injury, nine patients showed good recovery and three patients recovered with moderate disability. Patients with severe head injury (three patients had 100% mortality. Conclusions: In urban areas of Nepal, RTAs like vehicular crashes, motor cycle accidents, and pedestrian hit by moving vehicle are more common and in rural areas fall from height are commoner. We need to develop child safety legislations and risk-specific intervention programs in Nepal.

  12. Head and neck position sense.

    Science.gov (United States)

    Armstrong, Bridget; McNair, Peter; Taylor, Denise

    2008-01-01

    Traumatic minor cervical strains are common place in high-impact sports (e.g. tackling) and premature degenerative changes have been documented in sports people exposed to recurrent impact trauma (e.g. scrummaging in rugby) or repetitive forces (e.g. Formula 1 racing drivers, jockeys). While proprioceptive exercises have been an integral part of rehabilitation of injuries in the lower limb, they have not featured as prominently in the treatment of cervical injuries. However, head and neck position sense (HNPS) testing and re-training may have relevance in the management of minor sports-related neck injuries, and play a role in reducing the incidence of ongoing pain and problems with function. For efficacious programmes to be developed and tested, fundamental principles associated with proprioception in the cervical spine should be considered. Hence, this article highlights the importance of anatomical structures in the cervical spine responsible for position sense, and how their interaction with the CNS affects our ability to plan and execute effective purposeful movements. This article includes a review of studies examining position sense in subjects with and without pathology and describes the effects of rehabilitation programmes that have sought to improve position sense. In respect to the receptors providing proprioceptive information for the CNS, the high densities and complex arrays of spindles found in cervical muscles suggest that these receptors play a key role. There is some evidence suggesting that ensemble encoding of discharge patterns from muscle spindles is relayed to the CNS and that a pattern recognition system is used to establish joint position and movement. Sensory information from neck proprioceptive receptors is processed in tandem with information from the vestibular system. There are extensive anatomical connections between neck proprioceptive inputs and vestibular inputs. If positional information from the vestibular system is inaccurate or

  13. Influence of head models on neuromagnetic fields and inverse source localizations

    Directory of Open Access Journals (Sweden)

    Schimpf Paul H

    2006-10-01

    Full Text Available Abstract Background The magnetoencephalograms (MEGs are mainly due to the source currents. However, there is a significant contribution to MEGs from the volume currents. The structure of the anatomical surfaces, e.g., gray and white matter, could severely influence the flow of volume currents in a head model. This, in turn, will also influence the MEGs and the inverse source localizations. This was examined in detail with three different human head models. Methods Three finite element head models constructed from segmented MR images of an adult male subject were used for this study. These models were: (1 Model 1: full model with eleven tissues that included detailed structure of the scalp, hard and soft skull bone, CSF, gray and white matter and other prominent tissues, (2 the Model 2 was derived from the Model 1 in which the conductivity of gray matter was set equal to the white matter, i.e., a ten tissuetype model, (3 the Model 3 consisted of scalp, hard skull bone, CSF, gray and white matter, i.e., a five tissue-type model. The lead fields and MEGs due to dipolar sources in the motor cortex were computed for all three models. The dipolar sources were oriented normal to the cortical surface and had a dipole moment of 100 μA meter. The inverse source localizations were performed with an exhaustive search pattern in the motor cortex area. A set of 100 trial inverse runs was made covering the 3 cm cube motor cortex area in a random fashion. The Model 1 was used as a reference model. Results The reference model (Model 1, as expected, performed best in localizing the sources in the motor cortex area. The Model 3 performed the worst. The mean source localization errors (MLEs of the Model 3 were larger than the Model 1 or 2. The contour plots of the magnetic fields on top of the head were also different for all three models. The magnetic fields due to source currents were larger in magnitude as compared to the magnetic fields of volume currents

  14. The effect of head movement and head positioning on sound field audiometry.

    Science.gov (United States)

    Shaw, Paul; Greenwood, Hannah

    2012-06-01

    Positioning and maintaining the subject's head at the calibration point (CP) of the sound field (SF) during SF assessment remains a challenge. The purpose of this study was to investigate the sound pressure level (SPL) at head positions likely to be encountered in routine audiological practice. Eight National Health Service SF clinics were used to obtain SPL measurements. Part 1 of the study investigated SPL variability at positions around the CP (0.15 m and 0.30 m). Parts 2 and 3 of the study, investigated the SPL at two typical head heights of the infant population. Only sound field measures were obtained. Part 1: 32% and 40% of measurements of SPL around the CP were >2 dB different from the SPL at the CP (0.15 m and 0.30 m). Parts 2 and 3: 55% and 38% of measurements of SPL, at the two infant head heights, were >2 dB from the SPL at the CP. Variability in SPL, due to head movement, is to be expected when performing SF audiometry. Furthermore, the typical head heights of infants will introduce additional variability, unless the position of the CP is chosen carefully.

  15. Enhancement of subject description of fiction with annotations

    Directory of Open Access Journals (Sweden)

    Alenka Šauperl

    2007-01-01

    Full Text Available In Slovenia, subject description of fiction was traditionally limited to the Universal Decimal Classification number, which was mainly assigned for shelving. Readers found their books by browsing the library shelves, while librarians had to rely on their personal familiarity with the library collection if they wanted to advise readers on the selection of books. Subject description, such as is often associated with non-literary works, would require a lot of time. Therefore, we wanted to know whether reading book reviews in newspapers could replace reading the entire literary work. We analysed a small sample of book reviews written by literary critics and published in Slovenian newspapers and compared them to the reviews, written by librarians for the same literary works (in the »Priporočamo!« project. We realized that the content is different. However, they could be used for identification of additional subject headings. The same findings resulted from a similar analysis of literary works written for children. Concepts, that seemed potentially appropriate subject headings, often actually do not appear in the Slovenian subject headings or subject headings from the Pionirska knjižnica of Ljubljana. Both subject heading lists should include a larger number of abstract concepts, which more often appear in literary than in non-literary works. Both subject heading lists should also be coordinated.

  16. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos ... head injuries, stroke , brain tumors and other brain diseases than regular radiographs (x-rays). top of page ...

  17. Lubricating the swordfish head

    NARCIS (Netherlands)

    Videler, John J.; Haydar, Deniz; Snoek, Roelant; Hoving, Henk-Jan T.; Szabo, Ben G.

    The swordfish is reputedly the fastest swimmer on Earth. The concave head and iconic sword are unique characteristics, but how they contribute to its speed is still unknown. Recent computed tomography scans revealed a poorly mineralised area near the base of the rostrum. Here we report, using

  18. Waco Head Start Program.

    Science.gov (United States)

    Porter, Para

    The Economic Opportunity Act of 1964 led to the formation of three separate Head Start Programs in Waco, Texas. The first year, 1,500 children were involved. Of these, 40 percent were Negro, 30 percent Latin American, and 30 percent white. All teachers received a week of preparatory study at the University of Texas. The program involved four areas…

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician Resources Professions Site Index A-Z Computed Tomography (CT) - Head ...

  20. Ultrasound: Head (For Parents)

    Science.gov (United States)

    ... a safe and painless test that uses sound waves to make images of the brain. During the examination, an ultrasound machine sends sound ... The fontanel provides an opening for the sound waves to get through and reach the brain. Why It's Done Doctors order head ultrasounds when ...

  1. Silva as the Head

    DEFF Research Database (Denmark)

    Svabo, Connie

    2015-01-01

    The head of the performance design programme is substituted by a sister's academy delegate. this performance situation formed part of a week of semesterstart where the students and professors visited Sister's Academy, Malmø. I participated in the Sister's Academy as visiting researcher and here...

  2. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Radiation Dose in X-Ray and CT Exams Blood Clots CT Perfusion of the Head CT Angiography ( ...

  3. Head nurses as middle managers.

    Science.gov (United States)

    Johnston, P F

    1983-11-01

    The relationship between head nurses and their staff nurses influences staff turnover rates and job satisfaction. In this article the author describes the measures taken by the management of Greater Southeast Community Hospital in response to an increasing turnover rate among staff RNs. In recognition of the head nurse role vis-d-vis attrition rates and job satisfaction, head nurses were upgraded to department head status and rigorous head nurse performance standards were developed. These standards required clinical expertise, managerial competence, and accountability. It is the author's contention that clinical practice and staff morale are directly related to a clearly defined head nurse role.

  4. Visual overview, oral detail

    DEFF Research Database (Denmark)

    Hertzum, Morten; Simonsen, Jesper

    2015-01-01

    and with the coordinating nurse, who is the main keeper of the whiteboard. On the basis of observations, we find that coordination is accomplished through a highly intertwined process of technologically mediated visual overview combined with orally communicated details. The oral details serve to clarify and elaborate......Whiteboards facilitate coordinative practices by making information publicly accessible and thereby strengthening communication and joint commitment about it. This study investigates how coordination is accomplished in an emergency department through interactions with the whiteboard...... instrumental and communicative coordination are central to the coordinative function of the whiteboard. We discuss this and other implications for design....

  5. Head injuries, heading, and the use of headgear in soccer.

    Science.gov (United States)

    Niedfeldt, Mark W

    2011-01-01

    Soccer has more than 265 million players around the world and is the only contact sport with purposeful use of the head for controlling and advancing the ball. Head contact in soccer has the potential to cause acute traumatic brain injury including concussion or, potentially, a pattern of chronic brain injury. Although early retrospective research on the effects of soccer heading seemed to suggest that purposeful heading may contribute to long-term cognitive impairment, prospective controlled studies do not support this and, in fact, suggest that purposeful heading may not be a risk factor for cognitive impairment. Headgear has not been shown to be effective in reducing ball impact but may be helpful in reducing the force of non-ball-related impacts to the head. There are concerns that universal use of headgear may cause more aggressive heading and head challenges, leading to increased risk of injury.

  6. Kinetic energy budget details

    Indian Academy of Sciences (India)

    Abstract. This paper presents the detailed turbulent kinetic energy budget and higher order statistics of flow behind a surface-mounted rib with and without superimposed acoustic excitation. Pattern recognition technique is used to determine the large-scale structure magnitude. It is observed that most of the turbulence ...

  7. Three Latin Phonological Details

    DEFF Research Database (Denmark)

    Olsen, Birgit Anette

    2006-01-01

    The present paper deals with three minor details of Latin phonology: 1) the development of the initial sequence *u¿l¿-, where it is suggested that an apparent vacillation between ul- and vol-/vul- represents sandhi variants going back to the proto-language, 2) the adjectives ama¯rus ‘bitter' and ...

  8. Advances and trends of head-up and head-down display systems in automobiles

    Science.gov (United States)

    Betancur, J. Alejandro; Osorio-Gomez, Gilberto; Agudelo, J. David

    2014-06-01

    Currently, in the automotive industry the interaction between drivers and Augmented Reality (AR) systems is a subject of analysis, especially the identification of advantages and risks that this kind of interaction represents. Consequently, this paper attempts to put in evidence the potential applications of Head-Up (Display (HUD) and Head-Down Display (HDD) systems in automotive vehicles, showing applications and trends under study. In general, automotive advances related to AR devices suggest the partial integration of the HUD and HDD in automobiles; however, the right way to do it is still a moot point.

  9. Antiplatelet therapy and the outcome of subjects with intracranial injury: the Italian SIMEU study

    OpenAIRE

    Fabbri, Andrea; Servadei, Franco; Marchesini, Giulio; Bronzoni, Carolina; Montesi, Danilo; Arietta, Luca

    2013-01-01

    Introduction Pre-injury antithrombotic therapy might influence the outcome of subjects with head injuries and positive computed tomography (CT) scans. We aimed to determine the potential risk of pre-injury antiplatelet drug use on short- and long-term outcome of head injured subjects admitted to emergency departments (EDs) in Italy for extended observation. Methods A total of 1,558 adult subjects with mild, moderate and severe head injury admitted to Italian EDs were studied. In multivariable...

  10. Voluntary head stabilization in space during trunk movements in weightlessness

    Science.gov (United States)

    Amblard, B.; Assaiante, C.; Fabre, J.-C.; Martin, N.; Massion, J.; Mouchnino, L.; Vernazza, S.

    The ability to voluntarily stabilize the head in space during lateral rhythmic oscillations of the trunk has been investigated during parabolic flights. Five healthy young subjects, who gave informed consent, were examined. The movements were performed with eyes open or eyes closed, either during phases of microgravity or phases of normal gravity. The main result to emerge from this study is that the head may be stabilized in space about the roll axis under microgravity conditions with, as well as without vision, despite the reduction of the vestibular afferent and the muscle proprioceptive inputs. Moreover, the absence of head stabilization about the yaw axis confirms that the degrees of freedom of the neck can be independently controlled, as it was previously shown [1]. These results seem to indicate that voluntary head stabilization does not depend crucially upon static vestibular afferents. Head stabilization in space may be in fact organized on the basis of either dynamic vestibular afferents or a postural body scheme.

  11. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... News Physician Resources Professions Site Index A-Z Magnetic Resonance Imaging (MRI) - Head Magnetic resonance imaging (MRI) of the head uses a powerful magnetic field, radio waves and a computer to produce ...

  12. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... content. Related Articles and Media MR Angiography (MRA) Magnetic Resonance, Functional (fMRI) - Brain Head and Neck Cancer Treatment Brain Tumor Treatment Magnetic Resonance Imaging (MRI) Safety Alzheimer's Disease Head Injury Brain ...

  13. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... Articles and Media MR Angiography (MRA) Magnetic Resonance, Functional (fMRI) - Brain Head and Neck Cancer Treatment Brain Tumor Treatment Magnetic Resonance Imaging (MRI) Safety Alzheimer's Disease Head Injury Brain Tumors Images related to ...

  14. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... are the limitations of MRI of the Head? What is MRI of the Head? Magnetic resonance imaging ( ... brain) in routine clinical practice. top of page What are some common uses of the procedure? MR ...

  15. Childhood Head and Neck Irradiation

    Science.gov (United States)

    ... Thyroid Association ® www.thyroid.org Childhood Head & Neck Irradiation What is the thyroid gland? The thyroid gland ... Thyroid Association ® www.thyroid.org Childhood Head & Neck Irradiation Thyroid nodules (see Thyroid Nodule brochure) • Thyroid nodules ...

  16. Magnetic Resonance Imaging (MRI) -- Head

    Medline Plus

    Full Text Available ... for Brain Tumors Radiation Therapy for Head and Neck Cancer Others : American Stroke Association National Stroke Association ... MRA) Magnetic Resonance, Functional (fMRI) - Brain Head and Neck Cancer Treatment Brain Tumor Treatment Magnetic Resonance Imaging ( ...

  17. Head circumference in Iranian infants

    Directory of Open Access Journals (Sweden)

    Mohammad Esmaeili

    2015-03-01

    Full Text Available Introduction: Head circumference (HC measurement is one of the important parameter for diagnosis of neurological, developmental disorders and dysmorphic syndromes. Recognition of different disorders requires an understanding of normal variation for HC size, in particular, in infancy period with most rapid growth of the brain. Because of international and interracial standard chart differences about anthropometric indices, some differences from local to local, generation to generation and changes in ethnic mix of population and socioeconomic factors, periodic revolution of HC size is suggested. The aims of our study were presenting local HC standard for an Iranian infant population and comparison with the American national center of health statistics (NCHS charts accepted by WHO. Methods: 1003 subjects aged from birth to 24 months apparently healthy normal children enrolled randomly in this cross sectional study. HC size were measured and recorded. Tables and graphs were depicted by Excel Microsoft Office 2007. We use two tailed t-student test for statistical analysis. Results: The mean of HC size in boys was larger than girls. The curves were followed a similar pattern to NCHS based on a visual comparison. Overall our subjects in both sexes at birth time had smaller HC size than NCHS. In other ages our children had larger HC size than those of NCHS. Conclusion: Because of international and interracial difference of HC size. We recommend in each area of the world, local anthropometric indices are constructed and used clinically. In addition more extensive and longitudinally design comprehensive studies is suggested.

  18. Idiopathic head tremor in English bulldogs.

    Science.gov (United States)

    Guevar, Julien; De Decker, Steven; Van Ham, Luc M L; Fischer, Andrea; Volk, Holger A

    2014-02-01

    Idiopathic head tremor (IHT) syndrome is a recognized but poorly characterized movement disorder in English bulldogs (EBs). The data analyzed were collected via a detailed online questionnaire and video recordings. Thirty-eight percent of the population demonstrated IHT. The first presentation was early in life. There was no sex or neutered status predisposition. The condition disappeared with time in 50% of the cases. The direction of the head movement was vertical or horizontal. The number of episodes per day and the duration of the episodes were greatly variable. The majority of episodes occurred at rest. Most of the episodes were unpredictable. And there was no alteration of the mental status for most dogs during the episodes. Stress has been reported as a suspected trigger factor. IHT in EBs can be considered an idiopathic paroxysmal movement disorder. © 2013 Movement Disorder Society.

  19. Genetic parameters for subjectively assessed wool and ...

    African Journals Online (AJOL)

    admin

    The only noteworthy maternal correlation among wool traits was estimated between QUAL and COL at 0.39 ± 0.18 (Table 6). Table 5 Genetic (rg), phenotypic (rp), environmental (re) and maternal (rm) correlations (± s.e.) among subjectively assessed conformation traits. Trait rg re rp rm. General head conformation (GEN) X.

  20. Where are we heading

    Energy Technology Data Exchange (ETDEWEB)

    Noto, L.A. [Mobil Corporation, (United States)

    1996-12-31

    The present paper deals with different aspects connected to the global petroleum industry by discussing the way of heading. The aspects cover themes like new frontiers, new relationships, sanctions, global climate change, new alliances and new technology. New frontiers and relationships concern domestic policy affecting the industry, and sanctions are discussed in connection with trade. The author discusses the industry`s participation in the global environmental policy and new alliances to provide greater opportunity for developing new technology

  1. Radial Head Fractures

    OpenAIRE

    Jordan, Robert W.; Jones, Alistair DR.

    2017-01-01

    Background: Radial head fractures are common elbow injuries in adults and are frequently associated with additional soft tissue and bone injuries. Methods: A literature search was performed and the authors’ personal experiences are reported. Results: Mason type I fractures are treated non-operatively with splinting and early mobilisation. The management of Mason type II injuries is less clear with evidence supporting both non-operative treatment and internal fixation. The degree of intra-arti...

  2. Head injuries in helmeted child bicyclists.

    Science.gov (United States)

    Grimard, G.; Nolan, T.; Carlin, J. B.

    1995-01-01

    OBJECTIVE: To determine the characteristics and the severity of head and facial injuries to helmeted child bicyclists, and whether the helmet contributed to the injury, and to study factors related to bicycle accidents. DESIGN: Retrospective review of two case series. Children sustaining head injury while not wearing helmets were studied as a form of reference group. SETTING: Large paediatric teaching hospital. SUBJECTS: 34 helmeted child bicyclists and 155 non-helmeted bicyclists, aged 5-14 years. MAIN OUTCOME MEASURES: Number of injuries, type of injuries, injury severity score, deaths, and accident circumstances. RESULTS: 79% of the head injuries of the helmeted child group were mild and two thirds of these had facial injuries. Children in the helmet group were in a greater proportion of bike-car collisions than the no helmet group and at least 15% of the helmets were lost on impact. There were no injuries secondary to the helmet. CONCLUSIONS: Most of the head injuries sustained by the helmeted children were of mild severity and there was no evidence to suggest that the helmet contributed to injury. Nevertheless, consideration should be given to designing a facial protector for the bicycle helmet and to improvement of the fastening device. PMID:9345988

  3. Carotenoid intake and head and neck cancer: a pooled analysis in the International Head and Neck Cancer Epidemiology Consortium

    OpenAIRE

    Leoncini, Emanuele; Edefonti, Valeria; Hashibe, Mia; Parpinel, Maria; Cadoni, Gabriella; FERRARONI, MONICA; Serraino, Diego; Matsuo, Keitaro; Olshan, Andrew F.; Zevallos, Jose P.; Winn, Deborah M.; Moysich, Kirsten; Zhang, Zuo-Feng; Morgenstern, Hal; Levi, Fabio

    2015-01-01

    Food and nutrition play an important role in head and neck cancer (HNC) etiology; however, the role of carotenoids remains largely undefined. We explored the relation of HNC risk with the intake of carotenoids within the International Head and Neck Cancer Epidemiology Consortium. We pooled individual-level data from 10 case–control studies conducted in Europe, North America, and Japan. The analysis included 18,207 subjects (4414 with oral and pharyngeal cancer, 1545 with laryngeal cancer, and...

  4. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... time, resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they ... the technologist verifies that the images are of high enough quality for accurate interpretation. A CT scan ...

  5. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... to be obtained in a shorter period of time, resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they can scan through large sections of the body in just a ...

  6. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... slices. When the image slices are reassembled by computer software, the result is a very detailed multidimensional view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ...

  7. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... speak with you through a built-in intercom system. With pediatric patients, a parent may be allowed ...

  8. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... Privacy | Terms of Use | Links | Site Map Copyright © 2017 Radiological Society of North America, Inc. (RSNA). To ...

  9. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... resulting in more detail and additional view capabilities. Modern CT scanners are so fast that they can ... to ensure that you are properly positioned. With modern CT scanners, you will hear only slight buzzing, ...

  10. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... unnecessary delays, contact your doctor before the exact time of your exam. Also inform your doctor of ... to be obtained in a shorter period of time, resulting in more detail and additional view capabilities. ...

  11. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... that lasts for at most a minute or two. You may experience a sensation like you have ... CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

  12. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images or pictures of ... tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood ...

  13. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... If contrast material is used, depending on the type of exam, it will be swallowed, injected through ...

  14. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... FAQ | Privacy | Terms of Use | Links | Site Map Copyright © 2018 Radiological Society of North America, Inc. (RSNA). ...

  15. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view ... cause blurring of the images and degrade the quality of the examination the same way that it ...

  16. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... detailed images of many types of tissue as well as the lungs, bones, and blood vessels. CT ... iodine is extremely rare, and radiology departments are well-equipped to deal with them. Because children are ...

  17. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or ... detailed images of many types of tissue as well as the lungs, bones, and blood vessels. CT ...

  18. Steam Generator Group Project. Task 6. Channel head decontamination

    Energy Technology Data Exchange (ETDEWEB)

    Allen, R.P.; Clark, R.L.; Reece, W.D.

    1984-08-01

    The Steam Generator Group Project utilizes a retired-from-service pressurized-water-reactor steam generator as a test bed and source of specimens for research. An important preparatory step to primary side research activities was reduction of the radiation field in the steam generator channel head. This task report describes the channel head decontamination activities. Though not a programmatic research objective it was judged beneficial to explore the use of dilute reagent chemical decontamination techniques. These techniques presented potential for reduced personnel exposure and reduced secondary radwaste generation, over currently used abrasive blasting techniques. Two techniques with extensive laboratory research and vendors prepared to offer commercial application were tested, one on either side of the channel head. As indicated in the report, both techniques accomplished similar decontamination objectives. Neither technique damaged the generator channel head or tubing materials, as applied. This report provides details of the decontamination operations. Application system and operating conditions are described.

  19. Vocalisations of the Brown-headed Parrot, Poicephalus cryptoxanthus

    African Journals Online (AJOL)

    The Brown-headed Parrot, Poicephalus cryptoxanthus, is a poorly-known species inhabiting eastern South Africa. This study details the vocalizations of the species and places these in their behavioural context. Seven distinct calls were identified. The magnitude of the vocabulary corresponds well with those that have been ...

  20. Human volunteer head-Tl response for oblique impact conditions

    NARCIS (Netherlands)

    Philippens, M.M.G.M.; Cappon, H.J.; Ratingen, M.R. van

    2004-01-01

    The development of modern smart restraint systems requires access to human surrogates with a biofidelic performance, which includes details on timing and local deformations. Therefore volunteer head neck responses for oblique impacts from the Naval BioDynamics Laboratory are re-analysed using a

  1. Bumblebee Homing: The Fine Structure of Head Turning Movements.

    Directory of Open Access Journals (Sweden)

    Norbert Boeddeker

    Full Text Available Changes in flight direction in flying insects are largely due to roll, yaw and pitch rotations of their body. Head orientation is stabilized for most of the time by counter rotation. Here, we use high-speed video to analyse head- and body-movements of the bumblebee Bombus terrestris while approaching and departing from a food source located between three landmarks in an indoor flight-arena. The flight paths consist of almost straight flight segments that are interspersed with rapid turns. These short and fast yaw turns ("saccades" are usually accompanied by even faster head yaw turns that change gaze direction. Since a large part of image rotation is thereby reduced to brief instants of time, this behavioural pattern facilitates depth perception from visual motion parallax during the intersaccadic intervals. The detailed analysis of the fine structure of the bees' head turning movements shows that the time course of single head saccades is very stereotypical. We find a consistent relationship between the duration, peak velocity and amplitude of saccadic head movements, which in its main characteristics resembles the so-called "saccadic main sequence" in humans. The fact that bumblebee head saccades are highly stereotyped as in humans, may hint at a common principle, where fast and precise motor control is used to reliably reduce the time during which the retinal images moves.

  2. Detailed Debunking of Denial

    Science.gov (United States)

    Enting, I. G.; Abraham, J. P.

    2012-12-01

    The disinformation campaign against climate science has been compared to a guerilla war whose tactics undermine the traditional checks and balances of science. One comprehensive approach has to been produce archives of generic responses such as the websites of RealClimate and SkepticalScience. We review our experiences with an alternative approach of detailed responses to a small number of high profile cases. Our particular examples were Professor Ian Plimer and Christopher Monckton, the Third Viscount Monckton of Brenchley, each of whom has been taken seriously by political leaders in our respective countries. We relate our experiences to comparable examples such as John Mashey's analysis of the Wegman report and the formal complaints about Lomborg's "Skeptical Environmentalist" and Durkin's "Great Global Warming Swindle". Our two approaches used contrasting approaches: an on-line video of a lecture vs an evolving compendium of misrepresentations. Additionally our approaches differed in the emphasis. The analysis of Monckton concentrated on the misrepresentation of the science, while the analysis of Plimer concentrated on departures from accepted scientific practice: fabrication of data, misrepresentation of cited sources and unattributed use of the work of others. Benefits of an evolving compendium were the ability to incorporate contributions from members of the public who had identified additional errors and the scope for addressing new aspects as they came to public attention. `Detailed debunking' gives non-specialists a reference point for distinguishing non-science when engaging in public debate.

  3. Using Groups to Change the Department Head Role: An Organization Development Case

    Science.gov (United States)

    LeBlanc, Sheila; London, Chad; Huisman, Jeroen

    2013-01-01

    This article provides a detailed description and analysis of how one Canadian institution used groups of department heads as change agents to address their most acute department head role tensions. It is demonstrated that this institution's change initiative aligned very closely to the recommendations proposed, in both the literature pertaining to…

  4. Newspaper Headings as a Means of Presenting Priority and Secondary Information

    Science.gov (United States)

    Serdali, Bekzhigit K.; Ashirbekova, Gulmira Sh.; Isaeva, Zhazira; Adieva, Pakizat M.

    2016-01-01

    This study considers the possibility of using headings in periodicals as a functional mechanism for influencing the readers, which has corresponding goals and tasks. The study offers a detailed characterization of headings not as a unit of publishing and printing design, but as a conceptual and informational element in journalistic texts.…

  5. Head First Web Design

    CERN Document Server

    Watrall, Ethan

    2008-01-01

    Want to know how to make your pages look beautiful, communicate your message effectively, guide visitors through your website with ease, and get everything approved by the accessibility and usability police at the same time? Head First Web Design is your ticket to mastering all of these complex topics, and understanding what's really going on in the world of web design. Whether you're building a personal blog or a corporate website, there's a lot more to web design than div's and CSS selectors, but what do you really need to know? With this book, you'll learn the secrets of designing effecti

  6. "E" Heating Head

    Science.gov (United States)

    Fox, Robert L.; Swaim, Robert J.; Johnson, Samuel D.; Coultrip, Robert H.; Phillips, W. Morris; Copeland, Carl E.

    1994-01-01

    Two separate areas heated inductively for adhesive bonding in single operation. "E" heating head developed to satisfy need for fast-acting and reliable induction heating device. Used in attaching "high-hat" stiffeners to aircraft panels. Incorporates principles and circuitry of toroid joining gun. Width and length configured to provide variously sized heat zones, depending on bonding requirements. Lightweight, portable and provides rapid, reliable heating of dual areas in any environment. Well suited for flight-line and depot maintenance, and battlefield repair. Also useful in automotive assembly lines to strengthen automobile panels.

  7. Head First Python

    CERN Document Server

    Barry, Paul

    2010-01-01

    Ever wished you could learn Python from a book? Head First Python is a complete learning experience for Python that helps you learn the language through a unique method that goes beyond syntax and how-to manuals, helping you understand how to be a great Python programmer. You'll quickly learn the language's fundamentals, then move onto persistence, exception handling, web development, SQLite, data wrangling, and Google App Engine. You'll also learn how to write mobile apps for Android, all thanks to the power that Python gives you. We think your time is too valuable to waste struggling with

  8. Head first C#

    CERN Document Server

    Stellman, Andrew

    2010-01-01

    You want to learn C# programming, but you're not sure you want to suffer through another tedious technical book. You're in luck: Head First C# introduces this language in a fun, visual way. You'll quickly learn everything from creating your first program to learning sophisticated coding skills with C# 4.0, Visual Studio 2010 and .NET 4, while avoiding common errors that frustrate many students. The second edition offers several hands-on labs along the way to help you build and test programs using skills you've learned up to that point. In the final lab, you'll put everything together. From o

  9. Head first C#

    CERN Document Server

    Stellman, Andrew

    2008-01-01

    Head First C# is a complete learning experience for object-oriented programming, C#, and the Visual Studio IDE. Built for your brain, this book covers C# 3.0 and Visual Studio 2008, and teaches everything from language fundamentals to advanced topics including garbage collection, extension methods, and double-buffered animation. You'll also master C#'s hottest and newest syntax, LINQ, for querying SQL databases, .NET collections, and XML documents. By the time you're through, you'll be a proficient C# programmer, designing and coding large-scale applications. Every few chapters you will come

  10. Head First Mobile Web

    CERN Document Server

    Gardner, Lyza; Grigsby, Jason

    2011-01-01

    Despite the huge number of mobile devices and apps in use today, your business still needs a website. You just need it to be mobile. Head First Mobile Web walks you through the process of making a conventional website work on a variety smartphones and tablets. Put your JavaScript, CSS media query, and HTML5 skills to work-then optimize your site to perform its best in the demanding mobile market. Along the way, you'll discover how to adapt your business strategy to target specific devices. Navigate the increasingly complex mobile landscapeTake both technical and strategic approaches to mobile

  11. Scaling head-neck response data and derivation of 5th percentile female side-impact dummy head-neck response requirements in NBDL test conditions

    NARCIS (Netherlands)

    Meijer, R.; Wisgerhof, R.P.; Wismans, J.S.H.M.; Been, B.W.

    2009-01-01

    The head-neck biofidelity of side-impact dummies can be assessed according to the response requirements for the head-neck system based on mid-size male human subjects as published in ISO TR9790. These criteria are largely based on volunteer tests performed at the Naval Biodynamics Laboratory (NBDL)

  12. Global detailed gravimetric geoid

    Science.gov (United States)

    Vincent, S.; Marsh, J. G.

    1974-01-01

    A global detailed gravimetric geoid has been computed by combining the Goddard Space Flight Center GEM-4 gravity model derived from satellite and surface gravity data and surface 1 x 1-deg mean free-air gravity anomaly data. The accuracy of the geoid is plus or minus 2 meters on continents, 5 to 7 meters in areas where surface gravity data are sparse, and 10 to 15 meters in areas where no surface gravity data are available. Comparisons have been made with the astrogeodetic data provided by Rice (United States), Bomford (Europe), and Mather (Australia). Comparisons have also been carried out with geoid heights derived from satellite solutions for geocentric station coordinates in North America, the Caribbean, Europe and Australia.

  13. Consider the details

    DEFF Research Database (Denmark)

    Rasmussen, Rasmus; Hertzum, Morten

    2013-01-01

    Electronic whiteboards are replacing dry-erase whiteboards in many contexts. In this study we compare electronic and dry-erase whiteboards in emergency departments (EDs) with respect to reading distance and revision time. We find inferior reading accuracy for the electronic whiteboard at all three...... levels of distance in our study. For revision time, the electronic whiteboard is slower on one subtask but there is no difference on another subtask. Participants prefer the electronic whiteboard. Given the font size of the electronic whiteboard, the inferior reading accuracy is unsurprising...... but the reduced possibilities for acquiring information at a glance when clinicians pass the whiteboard may adversely affect their overview. Conversely, the similar revision times for one subtask show that logon may be done quickly. We discuss how details such as font size and logon may impact the high...

  14. Effect of Different Positions of the Head on Tympanometry Results: An Exploratory Study

    Directory of Open Access Journals (Sweden)

    Indranil Chatterjee

    2017-04-01

    Full Text Available Introduction Tympanometry is an objective measure of middle ear function that has been an integral part of the audiological evaluation test battery, for nearly three decades. The parameters of the tympanogram obtained are influenced with many factors such as introduction of positive or negative air pressure, speed of recording tympanogram, etc. This study was aimed to explore the influence of head positioning on tympanometric findings in normal ears. Materials and Methods Thirty ears of fifteen normal hearing subjects (mean age 22.8 years and five ears of subjects (mean age 23 years with high negative middle ear pressure were selected for the study. Tympanometry was done in four postures: head erect, head bent forward (chin touching the chest, head in supine and head lateralized towards one side. Results Two different results were obtained. It was interesting to note that the results significantly changed when the tympanogram was recorded after ten minutes in different head positions compared to those taken immediately after changing the head position. Discussion The possible explanation for the effect of duration in different head positions on tympanogram is discussed. Conclusion No significant changes were observed on static compliance, middle ear pressure, ear canal volume and pressure gradient when the tympanogram were recorded immediately bringing head in the particular posture. When head was held in the changed position for ten minutes, significant reduction in the pressure gradient was observed. Further extensive studies may be required to document the relationship between head positioning and tympanometric results.

  15. Visual perception of spatial subjects

    Energy Technology Data Exchange (ETDEWEB)

    Osterloh, K.R.S.; Ewert, U. [Federal Institute for Materials Research and Testing (BAM), Berlin (Germany)

    2007-07-01

    Principally, any imaging technology consists of two consecutive, though strictly separated processes: data acquisition and subsequent processing to generate an image that can be looked at, either on a monitor screen or printed on paper. Likewise, the physiological process of viewing can be separated into vision and perception, though these processes are much more overlapping. Understanding the appearance of a subject requires the entire sequence from receiving the information carried e.g. by photons up to an appropriate processing leading to the perception of the subject shown. As a consequence, the imagination of a subject is a result of both, technological and physiological processes. Whenever an evaluation of an image is critical, also the physiological part of the processing should be considered. However, an image has two dimensions in the first place and reality is spatial, it has three dimensions. This problem has been tackled on a philosophical level at least since Platon's famous discussion on the shadow image in a dark cave. The mere practical point is which structural details can be perceived and what may remain undetected depending on the mode of presentation. This problem cannot be resolved without considering each single step of visual perception. Physiologically, there are three 'tools' available to understanding the spatial structure of a subject: binocular viewing, following the course of perspective projection and motion to collect multiple aspects. Artificially, an object may be cut in various ways to display the interior or covering parts could be made transparent within a model. Samples will be shown how certain details of a subject can be emphasised or hidden depending on the way of presentation. It needs to be discussed what might help to perceive the true spatial structure of a subject with all relevant details and what could be misleading. (authors)

  16. Crowdsourcing detailed flood data

    Science.gov (United States)

    Walliman, Nicholas; Ogden, Ray; Amouzad*, Shahrzhad

    2015-04-01

    Over the last decade the average annual loss across the European Union due to flooding has been 4.5bn Euros, but increasingly intense rainfall, as well as population growth, urbanisation and the rising costs of asset replacements, may see this rise to 23bn Euros a year by 2050. Equally disturbing are the profound social costs to individuals, families and communities which in addition to loss of lives include: loss of livelihoods, decreased purchasing and production power, relocation and migration, adverse psychosocial effects, and hindrance of economic growth and development. Flood prediction, management and defence strategies rely on the availability of accurate information and flood modelling. Whilst automated data gathering (by measurement and satellite) of the extent of flooding is already advanced it is least reliable in urban and physically complex geographies where often the need for precise estimation is most acute. Crowdsourced data of actual flood events is a potentially critical component of this allowing improved accuracy in situations and identifying the effects of local landscape and topography where the height of a simple kerb, or discontinuity in a boundary wall can have profound importance. Mobile 'App' based data acquisition using crowdsourcing in critical areas can combine camera records with GPS positional data and time, as well as descriptive data relating to the event. This will automatically produce a dataset, managed in ArcView GIS, with the potential for follow up calls to get more information through structured scripts for each strand. Through this local residents can provide highly detailed information that can be reflected in sophisticated flood protection models and be core to framing urban resilience strategies and optimising the effectiveness of investment. This paper will describe this pioneering approach that will develop flood event data in support of systems that will advance existing approaches such as developed in the in the UK

  17. HEADS UP : Sensorimotor control of the head-neck system

    NARCIS (Netherlands)

    Forbes, P.A.

    2014-01-01

    Head-neck stabilization is inherently challenging even when stationary, requiring constant vigilance to counter the downward pull of gravity. It involves a highly complex biomechanical system comprised of a large mass (the head) balanced on top of seven vertebrae (the neck), that are in turn

  18. Detailed IR aperture measurements

    CERN Document Server

    Bruce, Roderik; Garcia Morales, Hector; Giovannozzi, Massimo; Hermes, Pascal Dominik; Mirarchi, Daniele; Quaranta, Elena; Redaelli, Stefano; Rossi, Carlo; Skowronski, Piotr Krzysztof; Wretborn, Sven Joel; CERN. Geneva. ATS Department

    2016-01-01

    MD 1673 was carried out on October 5 2016, in order to investigate in more detail the available aperture in the LHC high-luminosity insertions at 6.5 TeV and β∗=40 cm. Previous aperture measurements in 2016 during commissioning had shown that the available aperture is at the edge of protection, and that the aperture bottleneck at β∗=40 cm in certain cases is found in the separation plane instead of in the crossing plane. Furthermore, the bottlenecks were consistently found in close to the upstream end of Q3 on the side of the incoming beam, and not in Q2 on the outgoing beam as expected from calculations. Therefore, this MD aimed at measuring IR1 and IR5 separately (at 6.5 TeV and β∗=40 cm, for 185 µrad half crossing angle), to further localize the bottlenecks longitudinally using newly installed BLMs, investigate the difference in aperture between Q2 and Q3, and to see if any aperture can be gained using special orbit bumps.

  19. Comparative evaluation of the cadaveric, radiographic and computed tomographic anatomy of the heads of green iguana (Iguana iguana), common tegu (Tupinambis merianae) and bearded dragon (Pogona vitticeps).

    Science.gov (United States)

    Banzato, Tommaso; Selleri, Paolo; Veladiano, Irene A; Martin, Andrea; Zanetti, Emanuele; Zotti, Alessandro

    2012-05-11

    Radiology and computed tomography are the most commonly available diagnostic tools for the diagnosis of pathologies affecting the head and skull in veterinary practice. Nevertheless, accurate interpretation of radiographic and CT studies requires a thorough knowledge of the gross and the cross-sectional anatomy. Despite the increasing success of reptiles as pets, only a few reports over their normal imaging features are currently available. The aim of this study is to describe the normal cadaveric, radiographic and computed tomographic features of the heads of the green iguana, tegu and bearded dragon. 6 adult green iguanas, 4 tegus, 3 bearded dragons, and, the adult cadavers of: 4 green iguana, 4 tegu, 4 bearded dragon were included in the study. 2 cadavers were dissected following a stratigraphic approach and 2 cadavers were cross-sectioned for each species. These latter specimens were stored in a freezer (-20°C) until completely frozen. Transversal sections at 5 mm intervals were obtained by means of an electric band-saw. Each section was cleaned and photographed on both sides. Radiographs of the head of each subject were obtained. Pre- and post- contrast computed tomographic studies of the head were performed on all the live animals. CT images were displayed in both bone and soft tissue windows. Individual anatomic structures were first recognised and labelled on the anatomic images and then matched on radiographs and CT images. Radiographic and CT images of the skull provided good detail of the bony structures in all species. In CT contrast medium injection enabled good detail of the soft tissues to be obtained in the iguana whereas only the eye was clearly distinguishable from the remaining soft tissues in both the tegu and the bearded dragon. The results provide an atlas of the normal anatomical and in vivo radiographic and computed tomographic features of the heads of lizards, and this may be useful in interpreting any imaging modality involving these

  20. Comparative evaluation of the cadaveric, radiographic and computed tomographic anatomy of the heads of green iguana (Iguana iguana , common tegu ( Tupinambis merianae and bearded dragon ( Pogona vitticeps

    Directory of Open Access Journals (Sweden)

    Banzato Tommaso

    2012-05-01

    Full Text Available Abstract Background Radiology and computed tomography are the most commonly available diagnostic tools for the diagnosis of pathologies affecting the head and skull in veterinary practice. Nevertheless, accurate interpretation of radiographic and CT studies requires a thorough knowledge of the gross and the cross-sectional anatomy. Despite the increasing success of reptiles as pets, only a few reports over their normal imaging features are currently available. The aim of this study is to describe the normal cadaveric, radiographic and computed tomographic features of the heads of the green iguana, tegu and bearded dragon. Results 6 adult green iguanas, 4 tegus, 3 bearded dragons, and, the adult cadavers of : 4 green iguana, 4 tegu, 4 bearded dragon were included in the study. 2 cadavers were dissected following a stratigraphic approach and 2 cadavers were cross-sectioned for each species. These latter specimens were stored in a freezer (−20°C until completely frozen. Transversal sections at 5 mm intervals were obtained by means of an electric band-saw. Each section was cleaned and photographed on both sides. Radiographs of the head of each subject were obtained. Pre- and post- contrast computed tomographic studies of the head were performed on all the live animals. CT images were displayed in both bone and soft tissue windows. Individual anatomic structures were first recognised and labelled on the anatomic images and then matched on radiographs and CT images. Radiographic and CT images of the skull provided good detail of the bony structures in all species. In CT contrast medium injection enabled good detail of the soft tissues to be obtained in the iguana whereas only the eye was clearly distinguishable from the remaining soft tissues in both the tegu and the bearded dragon. Conclusions The results provide an atlas of the normal anatomical and in vivo radiographic and computed tomographic features of the heads of lizards, and this may be