WorldWideScience
1

Eielson Air Force Base OU-1 baseline risk assessment  

Energy Technology Data Exchange (ETDEWEB)

This Baseline Risk Assessment report is the second volume in a set of three volumes for operable Unit 1 (OU-1). The companion documents contain the Remedial Investigation and the Feasibility Study. Operable Unit 1 (OU-1) is one of several groups of hazardous waste sites located at Eielson Air Force Base (AFB) near Fairbanks, Alaska. The operable units at Eielson are typically characterized by petroleum, oil, lubricant/solvent contamination, and by the presence of organics floating at the water table. In 1989 and 1990, firms under contract to the Air Force conducted field studies to gather information about the extent of chemical contamination in soil, groundwater, and soil air pore space (soil gas) at the site. This report documents the results of a baseline risk assessment, which uses the 1989 and 1991 site characterization database to quantify the potential human health risk associated with past Base industrial activities ...

1993-09-01

2

Non-Markovian dephasing in solid-state single photon sources  

CERN Document Server

Solid-state single-photon sources have many desirable features that make them attractive for applications in quantum information processing. However, the phase coherence of such devices can be severely compromised by coupling to the solid-state environment. Here, we study the effects of realistic dephasing environments on a pair of solid-state single photon sources in the context of quantum interference effects such as the Hong-Ou-Mandel dip. By means of exact solutions for the non-Markovian dynamics of the sources, we show that the resulting loss of visibility depends crucially on the timing of photon detection events. Our results demonstrate that the effective visibility can be improved via temporal post-selection, and also that time-resolved interference can be a useful probe of the interaction between the emitter and its host environment.

2008-01-01

3

Superfund Record of Decision (EPA Region 10): Commencement Bay Nearshore/Tideflats Site, operable unit 4, Ruston/North Tacoma Study Area, WA, June 1993  

Energy Technology Data Exchange (ETDEWEB)

This decision document presents the selected remedial action for the Ruston/North Tacoma Study Area, in Ruston and Tacoma, Washington. The EPA has divided the Commencement Bay/Nearshore Tideflats Superfund site into seven operable units (OU's) in order to facilitate the investigation, analysis, and cleanup of this very large site. Four of these OU's are associated with the Asarco smelter: OU 02 - Asarco Tacoma Smelter; OU 04 - Asarco Off-Property (Ruston/North Tacoma Study Area); OU 06 - Asarco Sediments; and OU 07 - Asarco Demolition. The remedy described in this ROD addresses OU 04 and involves the cleanup of arsenic and lead contaminated soils and slag in the Study Area, the residential community surrounding the smelter. This remedy will address the principal threat posed by conditions at the site, which is the ingestion ...

1993-06-01

4

Nuclear magnetic resonance imaging of hepatic focal injuries with phased array antennae surface: apnoea or high resolution imagery?  

International Nuclear Information System (INIS)

French English ... Orig. Title Imagerie IRM des lesions focales hepatiques avec les antennes de surface en reseau phase (phased array): apnee ou imagerie haute resolution?.

1995-10-26

5

Etudes Fractographiques De Fontes GS Traitees Par Trempe ...  

Science.gov (United States)

... que celle precedemment decrite, dont la formation peut etre causee par une trempabilite inadequate, un temps de maintien isotherme trop court ou ...

1987-01-01

6

* NASA TECHNICAL TRANSLATION NASA TT F-11435 INFLUENCE OF ...  

Science.gov (United States)

isotherme, dans un courant d'azote ou sous vide entretenu. I t. Comptes Rendus Scientific Academy, Paris, Vol. 265 pyrolyse du carbonate de calcium, ...

7

Metallic aggregate synthesis by radiolysis of simple or complex salt aqueous solutions. Study by electron microscope of aggregate grafting on carbon membranes  

International Nuclear Information System (INIS)

French ... Title Synthese d'agregats metalliques par radiolyse de solutions aqueuses de sels simples ou complexes. Etude par M. E. du greffage des agregats sur membranes de carbone.

1987-05-20

8

Domestic and industrial applications of microwaves; Les micro-ondes dans les applications domestiques et/ou industrielles  

Energy Technology Data Exchange (ETDEWEB)

In addition to their use in high-speed ovens, microwaves are also finding applications in industrial manufacture, quality control and storage - anywhere where the high-frequency transmission or reflection properties of a material can be exploited. Microwaves are also being used in medical applications for the characterization of certain type of tumours. They are also being used in research into ultrasonic cavitation. (authors) 5 refs.

1999-01-01

9

Multicentre, randomised, controlled study of the impact of continuous sub-cutaneous glucose monitoring (GlucoDay) on glycaemic control in type 1 and type 2 diabetes patients  

British Library Electronic Table of Contents (United Kingdom)

ResumeObjectif determiner dans une etude randomisee l'impact d'un enregistrement continu du glucose sous-cutane pendant 48 heures sur le controle glycemique trois mois plus tard chez des patients presentant un diabete de type 1 (DT1) ou de type 2 (DT2). Methodes Quarante-huit patients avec un mauvais equilibre glycemique (HbA1c : 8-10,5 %) ont beneficie d'un enregistrement continu du glucose sous-cutane pendant 48 heures avec le systeme GlucoDay (A. Menarini Diagnostics) et ont ete randomises en deux groupes : ajustement de traitement en fonction de l'autosurveillance glycemique capillaire (groupe ASG) ou du profil d'enregistrement continu du glucose sous-cutane (groupe CGM). Le dosage d'HbA1c et le port du GlucoDay ont ete renouveles trois mois plus tard. Resultats Trente-quatre patients ...

2009-01-01

10

The oil at 50$: reserves depletion or OPEC revenge?; Le petrole a 50$: epuisement des reserves ou revanche de l'OPEP?  

Energy Technology Data Exchange (ETDEWEB)

Although the oil price is still far from its historical maximum, the oil market is today in crisis. To explain this situation the author discusses the nature of the supply constraints. The reserves are today better known and so more plentiful than at a previous period of the oil history and the russian production since 2004 is stagnating. The main factor seems to be the OPEC policy and in particular the will of limiting the oil production to defend upper prices. (A.L.B.)

2005-06-15

11

Interest of a two-dimensional matrix of detectors for the quality control of beams in static or dynamic mode; Interet d'une matrice bidimensionnelle de detecteurs pour le controle de qualite des faisceaux en mode statique ou dynamique  

Energy Technology Data Exchange (ETDEWEB)

A 2D matrix allows a fairly rapid verification of irradiation parameters transferred on computer processing equipment without expanding the dosimetry means to implement. Associated to 'Multicheck and Verisoft' software it will handle some of the regulatory recommendations of the A.F.S.S.A.P.S. for quality control of accelerators and ensure the traceability of testing carried out. (N.C.)

2007-11-15

12

Equipment stainless steel entire versus steels bimetallics clad or overlay; Utilizacao de equipamentos de processo construidos em aco inoxidavel integral versus acos bimetalicos cladeado ou 'overlay'  

Energy Technology Data Exchange (ETDEWEB)

This study does not recommend the use of a pressure vessel made of integral stainless steel, due to the failure mechanisms under stress corrosion assisted by chlorides or polythionic acid. Are presented case studies of literature and analysis of reports of proceedings of RLAM reactors, showing that the materials produced by bimetallic clad overlay or are more appropriate, in terms of integrity, for use in equipment that the internal environment requires austenitic stainless steel specification.

2008-07-01

13

Remedial Investigation Work Plan for Chestnut Ridge Operable Unit 1 (Chestnut Ridge Security Pits) at the Oak Ridge Y-12 Plant, Oak Ridge, Tennessee  

Energy Technology Data Exchange (ETDEWEB)

This Remedial Investigation (RI) Work Plan specifically addresses Chestnut Ridge Operable Unit 1, (OU1) which consists of the Chestnut Ridge Security Pits (CRSP). The CRSP are located {approximately}800 ft southeast of the central portion of the Y-12 Plant atop Chestnut Ridge, which is bounded to the northwest by Bear Creek Valley and to the southeast by Bethel Valley. Operated from 1973 to 1988, the CRSP consisted of a series of trenches used for the disposal of classified hazardous and nonhazardous waste materials. Disposal of hazardous waste materials was discontinued in December 1984, while nonhazardous waste disposal ended on November 8, 1988. An RI is being conducted at this site in response to CERCLA regulations. The overall objectives of the RI are to collect data necessary to evaluate the nature and extent of contaminants of concern (COC), support an ecological risk assessment (ERA) and a human health risk assessment (HHRA), support the evaluation of ...

1993-09-01

14

Chemical and morphological characterization of mesoporous material supported copper oxide nanoparticles for potential application  

British Library Electronic Table of Contents (United Kingdom)

SBA-15 supported nano-scaled copper oxide was synthesized by impregnation method via ultrasonic-assisted route. The removal test from gas mixture containing 0.1?vol.% hydrogen sulfide was carried out over this material at atmospheric conditions. The effects of the chemical nature of copper oxide and the textural properties of the material on removal capacity were studied. The materials before and after the removal test were analyzed by nitrogen adsorption, X-ray diffraction, Transmission Electron Microscope, X-ray photoelectron Spectroscopy, Fourier Transform Infrared Spectrometer and Inductive Coupled Plasma. The results showed that copper species are located predominantly in mesopore channels, existing as copper oxide nanoparticles. Mesopores are active sites for removal reaction. The ou...

2011-01-01

15

A method for sorting irradiated substances through coloration  

International Nuclear Information System (INIS)

L'invention concerne un procede de triage de cristaux irradies. Ce procede non destructeur comporte l'irradiation des cristaux par un rayonnement ionisant pendant une duree et avec une intensite telles qu'il se forme des centres colores distinctifs dans les matieres contenant des ions aluminium. Les cristaux colores qui correspondent en teinte et en profondeur de couleur a des teneurs en aluminium en dehors de la teneur desiree peuvent etre separes. On peut isoler ainsi des matieres de quartz, de verre, de silicates exemptes d'aluminium dans un melange, ou bien on peut choisir des fractions de ces matieres, chacune contenant une teneur uniforme en aluminium.

16

Remedial investigation/feasibility study report for lower Watts Bar Reservoir Operable Unit  

Energy Technology Data Exchange (ETDEWEB)

This document is the combined Remedial Investigation and Feasibility Study Report for the Lower Watts Bar Reservoir (LWBR) Operable Unit (OU). The LWBR is located in Roane, Rhea, and Meigs counties, Tennessee, and consists of Watts Bar Reservoir downstream of the Clinch River. This area has received hazardous substances released over a period of 50 years from the U.S. Department of Energy`s Oak Ridge Reservation (ORR), a National Priority List site established under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). As required by this law, the ORR and all off-site areas that have received containments, including LWBR, must be investigated to determine the risk to human health and the environment resulting from these releases, the need for any remedial action to reduce these risks, and the remedial actions that are most feasible for implementation in this OU. Contaminants from the ORR are primarily transported ...

1994-08-01

17

Numerical study of inflow conditions on a turbulent isothermal or heated plane jet; Etude numerique des conditions d'emission sur un ecoulement de type jet plan turbulent isotherme ou chauffe  

Energy Technology Data Exchange (ETDEWEB)

We intend to solve equations governing turbulent plane-vertical isotherm and non isotherm jets by taking into account inflow conditions at the exit of the nozzle. The analysis is focused on the influence of these conditions on this type of flow. Two cases are considered (uniform and parabolic velocity and temperature profiles). A finite difference scheme is developed to solve the governing equations. This numeric model allows us to show that the region of fully developed regime begins much nearer the nozzle for the turbulent case than for the laminar flow case. Indeed, the turbulence increases the mixing between the incoming gas from the nozzle and the ambient fluid, and consequently the size of the potential core zone decreases. The results are compared to other works introducing mathematical variables based on the energy conservation for the case of the mixed convection and the momentum conservation for the forced convection, which allows the validation of our results. (authors)

1999-11-01

18

High/medium voltage circuit breaker. Disjoncteur a haute ou moyenne tension  

Energy Technology Data Exchange (ETDEWEB)

Conventional gas-filled high voltage circuit breakers have the disadvantages of needing means to compress the arc-extinguishing gas and means for storing a significant amount of energy for operating the breaker. This invention has the object of providing a circuit breaker which does not need a gas compression means and whose energy of operation is very low. The principle of operation used in this circuit breaker consists of creating an arc voltage higher than that of the network. The difficulty of creating a high enough arc voltage in the SF{sub 6} gas normally used in a circuit breaker is resolved according to the invention by dividing the initial arc into a large number of elementary arcs by means of metal plates. The arc voltage of each elementary arc is from 20 to 40 volts, depending on the type of metal used. In a particular embodiment, the circuit breaker contains means for displacing the arc and giving it a solenoidal form. 11 figs.

1990-08-21

19

Cobalt, titanium or cerium oxide protective coatings for the nickel cathode of the molten carbonate fuel cells; Revetements protecteurs a base d'oxyde de cobalt, de titane ou de cerium pour la cathode de nickel des piles a combustible a carbonates fondus  

Energy Technology Data Exchange (ETDEWEB)

The aim of this work is to combine the MCFC cathode Li{sub x}Ni{sub 1-x}O properties to those of the protective coatings of LiCoO{sub 2}, Li{sub 2}TiO{sub 3} or of CeO{sub 2}, less soluble in the molten carbonates. In the cases of LiCoO{sub 2}, have been carried out by controlled potential coulometry in aqueous solution, a deposition of Co{sub 3}O{sub 4} on dense Ni. The cobalt oxide reacts rapidly in the Li{sub 2}CO{sub 3}-Na{sub 2}CO{sub 3} medium at 650 C to give LiCoO{sub 2}, a spinel cubic phase revealed by Raman spectroscopy. (O.M.)

2003-10-15

20

Search for supersymmetry in 2 different topologies with the L3 detector at Lep; Recherche de supersymetrie dans les canaux avec un ou deux leptons avec le detecteur L3 a LEP  

Energy Technology Data Exchange (ETDEWEB)

The present thesis presents two different aspects of my work in the L3 experiment, which are on one side the search for supersymmetric particles, the scalar leptons, in two different topologies 'electron + X + E' and '2 leptons + 2 photons + E', each of them being related to two theoretical SUSY models, m-SUGRA and GMSB. On the other side my work has been completed by the study of the BGO crystal electromagnetic calorimeter of L3, and the calibration of the electromagnetic calorimeter EGAP. After the essential motivations being reviewed, the production and disintegration modes are detailed concerning the scalar lepton sector at LEP. Then one presents the analysis techniques which I used to perform my selection, and also the results obtained from the data collected by L3 for center of mass energies between {radical} S =183 GeV and 202 GeV. The selection criteria that allow to isolate the events I looked for, including efficiencies but also the ...

2000-11-13

21

Phase report 1C, TA-21 operable unit RCRA Facility Investigation, Outfalls Investigation  

Energy Technology Data Exchange (ETDEWEB)

This phase report summarizes the results of field investigations conducted in 1992 at Technical Area 21 of Los Alamos National Laboratory, as prescribed by the RCRA Facility Investigation work plan for the Technical Area 21 operable unit (also known as OU 1106). This phase report is the last part of a three-part phase report describing the results of field work conducted in 1992 at this operable unit. Phase Report lA, issued on l4 June l993, summarized site geologic characterization activities. Phase report 1B, issued on 28 January 1994, included an assessment of site-wide surface soil background, airborne emissions deposition, and contamination in the locations of two former air filtration buildings. The investigations assessed in Phase Report 1C include field radiation surveys and surface and near-surface sampling to characterize potential contamination at 25 outfalls and septic systems listed as SWMUs in the RFI work plan. Based on the RFI data, it is ...

1994-02-28

22

Modeling of the non isothermal and non isobaric transformations kinetics. Application to the kaolinite de-hydroxylation and to the tri-uranium octo-oxide reduction by hydrogen; Modelisation de la cinetique de transformations non isothermes et (ou) non isobares. Application a la deshydroxylation de la kaolinite et a la reduction de l'octooxyde de triuranium par l'hydrogene  

Energy Technology Data Exchange (ETDEWEB)

The aim of this work is to be able to describe transformations, occurring when solids and gases are in non isothermal and non isobaric conditions, with kinetic models. A methodology has been used. Two essential processes have to be taken into account: the germination and the growth. The germs are supposed to be formed (at constant temperature and pressure) in the grains surface with a constant velocity by surface unit, (gamma), called germination surface frequency (number of germs.m{sup -2}.s{sup -1}. The growth velocity is characterized by a growth surface reactivity, (phi) (in mol.m{sup -2}.s{sup -1}). With an appropriate transformation model, it is possible to obtain the variations of (gamma) and (phi) in terms of the temperature and pressure which are then used in the calculation of the velocity in non isothermal and non isobaric conditions. In order to validate the developed method, two reactions have been studied. For the first one, the kaolinite de-hydroxylation, an anisotropic ...

2002-12-15

23

LANL environmental restoration site ranking system: System description. Final report  

Energy Technology Data Exchange (ETDEWEB)

The basic structure of the LANL Environmental Restoration (ER) Site Ranking System and its use are described in this document. A related document, Instructions for Generating Inputs for the LANL ER Site Ranking System, contains detailed descriptions of the methods by which necessary inputs for the system will be generated. LANL has long recognized the need to provide a consistent basis for comparing the risks and other adverse consequences associated with the various waste problems at the Lab. The LANL ER Site Ranking System is being developed to help address this need. The specific purpose of the system is to help improve, defend, and explain prioritization decisions at the Potential Release Site (PRS) and Operable Unit (OU) level. The precise relationship of the Site Ranking System to the planning and overall budget processes is yet to be determined, as the system is still evolving. Generally speaking, the Site Ranking System will be used as a decision aid. That ...

1992-10-13

24

Fracture characterizatioin of the Bandelier tuff in OU-1098 (TA-2 and TA-41)  

Energy Technology Data Exchange (ETDEWEB)

Rock fracture characterization documents a total of 1496 fractures in unit 2 of the Tshirege Member of the Bandelier Tuff along 6013 feet of Los Alamos Canyon`s north wall adjacent to Operational Unit 1098. Geologically termed joints, these fractures likely owe their primary origin to brittle failure during the cooling contraction of the tuff after its emplacement nearly 1 million years ago. Subsequent tectonic movement along the Pajarito Fault system has modified fracture strikes, dips, apertures, and linear density. From a background linear density of approximately 20 fractures per 100-foot interval along the canyon wall, fracture density increases to values in excess of 50 fractures per 100-foot interval in a zone at and immediately east of the Omega West reactor building TA-2-1. This increase in fracture density is coincident with the mapped trace of the Guaje Mountain Fault (GMFZ) that apparently bifurcates with a branch running through the canyon at Building TA-2-1 and another ...

1996-10-01

25

Boiling water reactors, pressurized water reactors, supercritical water reactors; Reacteurs a eau bouillante, a eau pressurisee, ou a eau supercritique  

Energy Technology Data Exchange (ETDEWEB)

This article gives an account of the recent development of light water reactors new concepts in the world. Different projects are being studied. The CE80+ from Combustion Engineering (CE) is a 1350 MWe-PWR-type reactor whose primary circuit is confined in a spherical metallic containment. This reactor was certified by NRC (national regulatory commission) in mid-1996. The APWR (advanced pressurized water reactor) is developed by MHI (Mitsubishi heavy industries) in a collaboration with Westinghouse, this PWR-type reactor fitted with 4 loops derived from the SP90 model that was developed by Westinghouse during the eighties. 2 units of ABWR (advanced boiling water reactor) were commissioned in Japan in 1996 and 1997, ABWR was certified by NRC in mid-1996. The BWR90+ is developed by ABB-atom (Sweden) and it represents a cautious advanced version of the BWR75. Passive reactors are reactors that rely only on potential energy (compressed gas, gravitational flow or electric batteries) to feed ...

2001-07-01

26

Postfire soil burn severity mapping with hyperspectral image unmixing  

Science.gov (United States)

Sep 28, 2011... to assess the application of high resolution imagery for burn severity mapping and to compare it to standard burn severity mapping methods. ...

29

The Management of Pit Viper Envenomation of the Hand  

UK PubMed Central (United Kingdom)

Snakebites are common among the rural population of developing countries. The severity of venomous snakebites depends on several factors, including the location of the bite, the amount of venom injected,...Full Text Available

2008-12-01

30

Modelling the occurrence and severity of enoxaparin-induced bleeding and bruising events  

UK PubMed Central (United Kingdom)

AIMSTo develop a population pharmacokinetic–pharmacodynamic model to describe the occurrence and severity of bleeding or bruising as a function of enoxaparin exposure.METHODSData...Full Text Available

2009-11-01

31

Bone geometry, biomechanics, and mineral content of the distal radius in uremic patients with severe hyperparathyroidism  

International Nuclear Information System (INIS)

Bone integrity and mineral status were studied with a noninvasive method in uremic patients with severe secondary hyperparathyroidism undergoing maintenance hemodialysis.

1999-04-01

32

Vigdor et al. respond  

Energy Technology Data Exchange (ETDEWEB)

Possible explanations are given for the observed asymmetry of the analyzing power in several (rho,..pi../sup -/) reactions.

1985-03-18

34

Performance and Scalability of the NAS Parallel Benchmarks in Java  

Science.gov (United States)

Several features make Java an attractive choice for scientific applications. In order to gauge the

2002-01-01

35

MICROMECHANICS - COMPRESSIVE PROPERTIES OF ...  

Science.gov (United States)

... slenderness ratio. Equations which determine the ultimate compressive strength of a composite were established. Several ...

1965-05-01

37

Implementation of the NAS Parallel Benchmarks in Java  

Science.gov (United States)

Several features make Java an attractive choice for High Performance Computing (HPC). In order to

2002-01-01

38

Why have mortality rates for severe malnutrition remained so high?  

UK PubMed Central (United Kingdom)

A review of the literature that has appeared over the past five decades indicates that the median case fatality from severe malnutrition has remained unchanged over this period and is typically 20-30%,...Full Text Available

1996-01-01

39

The Use of Zirconium and Feldspathic Porcelain in the Management of the Severely Worn Dentition: A Case Report  

UK PubMed Central (United Kingdom)

The management of the interim phase of a complete oral rehabilitation in patients with severely worn dentition is often challenging due to the loss of occlusal vertical dimension, loss of tooth structure,...Full Text Available

2009-01-01

40

Severely disabling chronic pain in young adults: prevalence from a population-based postal survey in North Staffordshire  

UK PubMed Central (United Kingdom)

BackgroundSeverely disabling chronic pain in the adult population is strongly associated with a range of negative health consequences for individuals and high health care costs,...Full Text Available

41

Satisfaction of Search in Multi-trauma Patients: Severity of Detected Fractures  

UK PubMed Central (United Kingdom)

PurposeSatisfaction of search (SOS) occurs when an abnormality is missed because another abnormality has been detected. This research studied whether the severity...Full Text Available

2007-06-01

42

Predictors of disability in a longitudinal sample of patients with rheumatoid arthritis.  

UK PubMed Central (United Kingdom)

Information from the Health Assessment Questionnaire (HAQ) is used to identify which variables measured in 1981 successfully predict the severity of disease in 1989 and the eight year change in severity...Full Text Available

1992-05-01

43

Peptide Nanoparticles as Novel Immunogens: Design and Analysis of a Prototypic Severe Acute Respiratory Syndrome Vaccine  

UK PubMed Central (United Kingdom)

Severe acute respiratory syndrome (SARS) is an infectious disease caused by a novel coronavirus that cost nearly 800 lives. While there have been no recent outbreaks of the disease, the threat...Full Text Available

2009-01-01

44

Oil from coal  

Energy Technology Data Exchange (ETDEWEB)

The conversion of coal to oil can be carried out in two ways. A synthesis route and a degradation route. Each of these routes are described and several degradation processes are explored. The testing of several fuels produced from coal is also given considerations.

1986-06-01

45

Low-Dose, Off-Label Drotrecogin Alfa (Xigris) In Severe Sepsis  

UK PubMed Central (United Kingdom)

Objective:In this article, we describe a successful low-dose, off-label usage of drotrecogin alfa (Xigris), given at 18 mcg/kg per hour, in a patient with severe sepsis who had an...Full Text Available

2008-08-01

46

Living and dying with severe chronic obstructive pulmonary disease: multi-perspective longitudinal qualitative study  

UK PubMed Central (United Kingdom)

Objectives To understand the perspectives of people with severe chronic obstructive pulmonary disease (COPD) as their illness progresses, and of their informal and professional carers,...Full Text Available

2011-01-01

47

Is it Crohn's disease? A severe systemic granulomatous reaction to sulfasalazine in patient with rheumatoid arthritis  

UK PubMed Central (United Kingdom)

BackgroundSulfasalazine is a widely used anti-inflammatory agent in the treatment of inflammatory bowel disease and several rheumatological disorders. Although as many as 20% of...Full Text Available

48

Hypoglycaemia and severe plasmodium falciparum malaria among pregnant sudanese women in an area characterized by unstable malaria transmission  

UK PubMed Central (United Kingdom)

BackgroundPregnant women are more susceptible to severe Plasmodium falciparum malaria, which can lead to poor maternal and fetal outcomes. Few data exist on the...Full Text Available

49

Genetic Heterogeneity in Severe Congenital Neutropenia: How Many Aberrant Pathways Can Kill a Neutrophil?  

UK PubMed Central (United Kingdom)

Purpose of reviewSevere congenital neutropenia (SCN) is a primary immunodeficiency in which lack of neutrophils causes inadequate innate immune host response to bacterial...Full Text Available

2007-12-01

50

Endothelin-1 Is Increased in Cerebrospinal Fluid and Associated with Unfavorable Outcomes in Children after Severe Traumatic Brain Injury  

UK PubMed Central (United Kingdom)

AbstractSevere pediatric traumatic brain injury (TBI) is associated with unfavorable outcomes secondary to injury from activation of the inflammatory cascade, the release of excitotoxic...Full Text Available

2010-10-01

51

Effect of widespread restrictions on the use of hospital services during an outbreak of severe acute respiratory syndrome  

UK PubMed Central (United Kingdom)

BackgroundRestrictions on the nonurgent use of hospital services were imposed in March 2003 to control an outbreak of severe acute respiratory syndrome (SARS) in Toronto, Ont. We...Full Text Available

2007-06-19

52

Components of change in the evolution of learning and unlearned preference  

UK PubMed Central (United Kingdom)

Several phenomena in animal learning seem to call for evolutionary explanations, such as patterns of what animals learn and do not learn. While several models consider how evolution should influence...Full Text Available

2009-09-07

53

Common variation in the ABO glycosyltransferase is associated with susceptibility to severe Plasmodium falciparum malaria  

UK PubMed Central (United Kingdom)

There is growing epidemiological and molecular evidence that ABO blood group affects host susceptibility to severe Plasmodium falciparum infection. The high frequency of common...Full Text Available

2008-02-15

54

Coal liquefaction. Quarterly report, July-September 1978  

Science.gov (United States)

DOE is supporting the development of several conversion processes that are currently in the pilot plant stage. Each of these processes is described briefly and information given as to contractor, contract, funding, site and current progress. Several support projects are treated similarly. (LTN)

1979-05-01

55

Clinical effects of laparotomy with perioperative continuous peritoneal lavage and postoperative hemofiltration in patients with severe acute pancreatitis  

UK PubMed Central (United Kingdom)

BackgroundThe elevated serum and peritoneal cytokine concentrations responsible for the systemic response syndrome (SIRS) and multiorgan failure in patients with severe acute pancreatitis...Full Text Available

56

Alloxan-Induced Diabetes Triggers the Development of Periodontal Disease in Rats  

UK PubMed Central (United Kingdom)

BackgroundPeriodontal disease in diabetic patients presents higher severity and prevalence; and increased severity of ligature-induced periodontal disease has been verified in diabetic...Full Text Available

57

Vehicle Test Course Severity  

Science.gov (United States)

... in this TOP. When these data become available, they will be included. 4.1 Course Profile Geometra. A course profile can ...

1987-04-06

58

PRODUCT NAME CAUSTIC SODA (RHEOCHEM)  

Wastenet

has the potential to cause severe acute and chronic health effects with over exposure.Use safe work

59

Moisture Ingression In Honeycomb Core Sandwich Panels: Directional Aspects  

Science.gov (United States)

Moisture ingression was studied in several composite sandwich panels.No observable ingression was

1997-01-01

60

Mike Dickerson - NASA Quest  

Science.gov (United States)

Before working at JPL he was the Chief Engineer for the Milstar Satellite Avionics and several Military space programs. His technical background is in ...

61

HIGH VOLTAGE BREAKDOWN STUDY. ADDENDUM: SOME ...  

Science.gov (United States)

... The nature of the vacuum breakdown mechanism presents just such a problem and the relative significance or total absence of several processes ...

1968-10-01

62

Geometric and topological methods for quantum field theory  

CERN Document Server

An introduction to recent developments in several active topics at the interface between algebra, geometry, topology and quantum field theory

2010-01-01

63

Full-length fuel rod behavior under severe accident conditions  

Energy Technology Data Exchange (ETDEWEB)

This document presents an assessment of the severe accident phenomena observed from four Full-Length High-Temperature (FLHT) tests that were performed by the Pacific Northwest Laboratory (PNL) in the National Research Universal (NRU) reactor at Chalk River, Ontario, Canada. These tests were conducted for the US Nuclear Regulatory Commission (NRC) as part of the Severe Accident Research Program. The objectives of the test were to simulate conditions and provide information on the behavior of full-length fuel rods during hypothetical, small-break, loss-of-coolant severe accidents, in commercial light water reactors.

1992-12-01

65

BBB - Phytohaemagglutinin  

Science.gov (United States)

... Several outbreaks have been associated with "slow cookers" or crock pots, or in casseroles which had not reached a high enough internal temperature to destroy ...

66

An Evaluation of the Severity of the January 1998 Ice Storm in ...  

Science.gov (United States)

... storm. There was little damage to high-voltage transmission lines and communication towers in northern New England. ...

1998-04-01

68

A comparative study of the fatty acid composition of prochloron lipids  

Science.gov (United States)

The chemical analysis of lipids of Prochloron isolated from several hosts is discussed. The object

1983-01-01

69

Mild acidic pretreatment to enhance low severity coal liquefaction promoted by cyclic olefins. Quarterly report, July 1995--September 1995  

Energy Technology Data Exchange (ETDEWEB)

Research continued on low severity coal liquefaction. Research using high temperature infrared of cyclic olefins progressed well during this quarter. Several fluorinated solvents were found that provide a high temperature medium for isotetralin and its aromatic and aliphatic analogues.

1996-03-01

70

Severe immune haemolytic anaemia due to ceftriaxone in a patient with congenital nephrotic syndrome  

British Library Electronic Table of Contents (United Kingdom)

Abstract Aim:- To describe the first case of ceftriaxone-related haemolysis in a patient with congenital nephrotic syndrome (CNS). Background:- Severe haemolysis caused by an immune reaction to ceftriaxone has mostly been described in patients with underlying haematological or immune dysfunction. Case report:- The authors present a 20-month-old boy with CNS of the Finnish type with several previous severe infections treated with ceftriaxone, admitted for suspected sepsis. Following ceftriaxone administration he developed shock secondary to an acute haemolytic reaction, with severe anaemia. Hypersensitivity to ceftriaxone was documented through positive agglutination tests. Conclusion:- Onset of haemolysis following ceftriaxone administration, particularly in a patient previously exposed to...

2011-01-01

71

Solution of vector Stefan problems with cross-diffusion  

Science.gov (United States)

A general model for the dissolution of particles in multi-component alloys is proposed and analyzed. The model is based on diffusion equations with cross-terms for the several species, combined with a Stefan condition as the equation of motion of the interface between the particle and diffusive phase. Several numerical schemes for the solution of the Stefan problem are proposed and compared. It turns out that diagonalization is useful for numerical purposes. However, for the case of position-dependent diffusion coefficients one has to use a different scheme. Here, we analyze stability and workload of several time integration methods.

2005-04-01

72

Room-temperature phosphorescence of nitrogen heterocycles and aromatic amines  

Energy Technology Data Exchange (ETDEWEB)

Room-temperature phosphorescence (RTP) has generated considerable interest over the past several years. Several materials have been used to induce RTP from a variety of compounds. However, there is still a need to test additional materials and experimental conditions for RTP so the maximum sensitivity and selectivity can be obtained. In this work, three solid surfaces and several experimental conditions were tested for RTP of nitrogen heterocycles and aromatic amines. Nitrogen heterocycles and aromatic amines are an important class of compounds as shown by work in areas such as environmental research and coal liquefaction research. 18 references.

1982-01-01

73

Prognostic implications of pulmonary hypertension in patients with severe aortic stenosis  

British Library Electronic Table of Contents (United Kingdom)

ObjectiveWe sought to determine the clinical outcomes of patients undergoing surgical aortic valve replacement with hemodynamically confirmed severe pulmonary hypertension and aortic stenosis and compare them with the outcomes of patients not undergoing aortic valve replacement and patients undergoing aortic valve replacement with mild-to-moderate pulmonary hypertension. MethodsA total of 317 patients with severe aortic stenosis (aortic valve area 35 mm Hg) was present in 81 patients, of whom 35 (43.2%) underwent surgical aortic valve replacement. We compared the clinical outcomes of these 35 patients with the 46 patient...

2011-01-01

74

tfrsc fa so - NASA Technical Report Server (NTRS)  

Science.gov (United States)

pletely new PW fuel cell model had to be developed for CINDA. Several ...... following linear equation, which is used in the SINDA fuel cell model: ...

75

Vasoconstrictors in local anesthesia for dentistry.  

UK PubMed Central (United Kingdom)

Addition of a vasoconstrictor to a local anesthetic may have several beneficial effects: a decrease in the peak plasma concentration of the local anesthetic agent, increase in the duration and the quality...Full Text Available

1992-01-01

76

Uncorrelated Randomness of the Heart Rate Is Associated with Sepsis in Sick Premature Infants  

UK PubMed Central (United Kingdom)

BackgroundLate-onset sepsis in the premature infant is frequently revealed by severe, unusual and recurrent bradycardias. In view of the high morbidity and mortality...Full Text Available

2009-03-01

77

The early phase change Gene in Maize  

UK PubMed Central (United Kingdom)

Recessive mutations of the early phase change (epc) gene in maize affect several aspects of plant development. These mutations were identified initially because of...Full Text Available

2002-01-01

78

Technology Improvement Pathways to Cost-Effective Vehicle Electrification: Preprint  

Energy Technology Data Exchange (ETDEWEB)

This paper evaluates several approaches aimed at making plug-in electric vehicles (EV) and plug-in hybrid electric vehicles (PHEVs) cost-effective.

2010-02-01

79

T-bet controls severity of hypersensitivity pneumonitis  

UK PubMed Central (United Kingdom)

Hypersensitivity Pneumonitis (HP) is an interstitial lung disease that develops following repeated exposure to inhaled environmental antigens. The disease is characterized by alveolitis, granuloma formation...Full Text Available

80

Survey of Cognitive Radio Techniques in Wireless Network  

CERN Document Server

In this report, I surveyed the cognitive radio technique in wireless networks. Researched several kinds of cognitive techniques about their advantages and disadvantages.

2011-01-01

81

Study of Contemporary Electronic Components under a Fluid ...  

Science.gov (United States)

... The effects of these voids were more noticeable for tantalum and aluminum electrolytic capacitors, which usually exhibited severe case deformation ...

1973-03-01

82

Studies on insecticide-resistant anophelines  

UK PubMed Central (United Kingdom)

The development of several DDT-resistant strains of Anopheles atroparvus is described. They were selected by larval treatment only (RL), selection of larval and adult females (RLAF),...Full Text Available

1959-01-01

83

Stress Tolerance of Photosystem II in Vivo  

UK PubMed Central (United Kingdom)

The in vivo photochemical activity of photosystem II was inferred from modulated chlorophyll fluorescence and photoacoustic measurements in intact leaves of several plant species (Lycopersicon...Full Text Available

1992-09-01

84

Severe mood dysregulation: In the "light" of circadian functioning  

British Library Electronic Table of Contents (United Kingdom)

Severe affective and behavioral dysregulation, labeled as severe mood dysregulation (SMD), is a widely spread phenomenon among adolescent psychiatric patients. This phenotype constitutes severe impairment across multiple settings, including various symptoms, such as non-episodic anger, mood instability, and hyperarousal. Moreover, SMD patients often show depression and reduced need for sleep. Despite a lifetime prevalence of 3.3%, systematic research is still scarce, and treatments that have been established do not account for the range of symptoms present in SMD. Considering the circadian dysfunctions, two hormones, melatonin and cortisol, are essential. When these hormones are dysregulated, the circadian rhythm gets out of synchrony. Since evidence is emerging showing that the worse the ...

2011-01-01

85

Severe accident analysis for Wolsung nuclear power plants  

Energy Technology Data Exchange (ETDEWEB)

Severe accident analysis has been performed for the Wolsung nuclear power= plants in Korea to investigate severe accident phenomena of CANDU-600 reactors as a part of Level II PSA study. The accident sequence analyzed in this paper is loss of active heat sinks (LOAH) which is caused by loss of off-site power, diesel generators, and DC power. ISAAC (Integrated Severe Accident Analysis Code) computer code developed by KAERI (Korea Atomic Energy Research Institute) was used in this analysis. This paper describes the important thermal-hydraulics and source term behaviors in the primary system and inside containment, and the failure mechanisms of calandria vessel and containment. In addition, some insights for accident management program (AMP) are also given. (Author) 5 refs., 1 tab., 12 figs.

1997-05-01

86

Severe accident analysis for Wolsung nuclear power  

Energy Technology Data Exchange (ETDEWEB)

Severe accident analysis has been performed for the Wolsung nuclear power plants in Korea to investigate severe accident phenomena of CANDU-600 reactors as a part of Level II PSA study. The accident sequence analyzed in this paper is loss of active heat sinks (LOAH) which is caused by loss of off-site power, diesel generators, and DC power, ISAAC(Integrated Severe Accident Analysis Code) computer code developed by KAERI (Korea Atomic Energy Research Institute) was used in this analysis. This paper describes the important thermal-hydraulics and source term behaviors in the primary system and inside containment, and the failure mechanisms of calandria vessel and containment. In addition, some insights for accident management program (AMP) are also given.

1997-05-01

87

SECURITY FOR MULTIMEDIA SPACE DATA ... - NASA Technical Reports Server  

Science.gov (United States)

Recently SSBRP network security planning was formalized with the production of several .... The SSBRP Network Security. Policy was written ...

88

Role of Mast Cells in Early and Delayed Radiation Injury in Rat Intestine  

Science.gov (United States)

... mast cell staining; ref. 16). The severity of structural radiation injury was assessed using a histopathological radiation injury score ... ...

89

Review of SCDAP/RELAP5 Code Application to severe accident analysis of CANDU Reactors  

International Nuclear Information System (INIS)

SCDAP/RELAP5 code has been developed in US for best-estimate simulation of light water reactors transients during nuclear accidents. The code models the coupled behaviour of the cooling system, reactor core and fission products release during the accident. It is the result of the coupling between RELAP5, modelling thermal hydraulic, control system, reactor kinetics and the transport of noncondensable gases, and SCDAP code modelling the behaviour of the reactor core during severe accidents. The paper briefly presents the application of SCDAP/RELAP5 code to CANDU severe accident analysis. Also, the paper proposes a summary of the needs for development that could enhance the quality of the severe accidents related predictions in CANDU reactors. (authors)

2009-10-12

90

Recurrence Intervals for Great Earthquakes of the Past 3,500 Years at Northeastern Willapa Bay, Washington  

Science.gov (United States)

Plate-boundary earthquakes have occurred repeatedly in the past several thousand years at the Cascadia subduction zone, where they are widely recorded ... ...

91

Quantifying Risk Factors for Human Brucellosis in Rural Northern Tanzania  

UK PubMed Central (United Kingdom)

BackgroundBrucellosis is a zoonosis of veterinary, public health and economic significance in most developing countries. Human brucellosis is a severely debilitating disease that...Full Text Available

92

Prognostic Factors for Failure after Prostatectomy  

UK PubMed Central (United Kingdom)

Several randomized studies have been completed in prostate cancer that show a benefit to immediate postoperative treatment in patients undergoing prostatectomy. In one of the studies, there was even...Full Text Available

93

Pesticide-induced immunotoxicity: are Great Lakes residents at risk?  

UK PubMed Central (United Kingdom)

Several organophosphate and organochlorine compounds, including pesticides commonly found in the Great Lakes basin, have the potential to induce immunotoxicity. Because of biomagnification and accumulation...Full Text Available

1995-12-01

94

Periodontal disease and spontaneous preterm birth: a case control study  

UK PubMed Central (United Kingdom)

BackgroundSeveral studies have suggested an association between periodontal disease and prematurity but this finding has not been consistently observed.MethodsCase...Full Text Available

96

PRICES SUBJECT To CHq.G - NASA Technical Report Server (NTRS)  

Science.gov (United States)

by the radionuclide X-ray fluorescence analysis into several groups according to the atomic number of the determined element. Table I documents this. ...

97

PRECEDING PAGE BLANK NOT FILMED  

Science.gov (United States)

Several years ago, the AGARD Structures and Materials Panel selected ... flow separation appears to have occurred during the tests, and the angles of attack ...

98

Ovine reference materials and assays for prion genetic testing  

UK PubMed Central (United Kingdom)

BackgroundGenetic predisposition to scrapie in sheep is associated with several variations in the peptide sequence of the prion protein gene (PRNP). DNA-based tests...Full Text Available

99

Outcomes of Severely Injured Adult Trauma Patients in an Australian Health Service: Does Trauma Center Level Make a Difference?  

British Library Electronic Table of Contents (United Kingdom)

Background Trauma centers are designated to provide systematized multidisciplinary care to injured patients. Effective trauma systems reduce patient mortality by facilitating the treatment of injured patients at appropriately resourced hospitals. Several U.S. studies report reduced mortality among patients admitted directly to a level I trauma center compared with those admitted to hospitals with less resources. It has yet to be shown whether there is an outcome benefit associated with the ?level of hospital? initially treating severely injured trauma patients in Australia. This study was designed to determine whether the level of trauma center providing treatment impacts mortality and/or hospital length of stay. Methods Outcomes were evaluated for severely injured trauma patients with an ...

2011-01-01

101

Optical Spectroscopy for Noninvasive Monitoring of Stem Cell Differentiation  

UK PubMed Central (United Kingdom)

There is a requirement for a noninvasive technique to monitor stem cell differentiation. Several candidates based on optical spectroscopy are discussed in this review: Fourier transform infrared (FTIR)...Full Text Available

2010-01-01

103

N79-27658 Potential for Cogeneration of Heat and Electricity in ...  

Science.gov (United States)

nances, an iron ore sintering plant, and several fuel oil boilers.***. The use of undemonstrated technology presents problems for evaluatingi ...

104

Modeling and Control of Airport Queueing Dynamics under Severe ...  

Science.gov (United States)

air traffic controllers at BOS tower and Terminal Radar Ap- .... Runway ) @ Runway. Buffer. Queue. Runway. Stochastic Delay. (M/1 server). (Runway to Fix). ,I, ...

105

Military Base Closures and Affected Defense Department Civil ...  

Science.gov (United States)

... System (CSRS) and the Federal Employees Retirement System (FERS). ... retirement, thrift savings plan, annual and sick leave, severance pay and ...

2006-03-07

106

Methanogenic Inhibition by Arsenic Compounds  

UK PubMed Central (United Kingdom)

The acute acetoclastic methanogenic inhibition of several inorganic and organic arsenicals was assayed. Trivalent species, i.e., methylarsonous acid and arsenite, were highly inhibitory, with 50% inhibitory...Full Text Available

2004-09-01

107

Mapping burned areas and burn severity patterns in SW Australian eucalypt forest using remotely-sensed changes in leaf area index  

British Library Electronic Table of Contents (United Kingdom)

Remote sensing is the most practical method available to managers of fire-prone forests for quantifying and mapping fire impacts. Differenced Normalised Burn Ratio (?NBR) is among the most widely used spectral indices for the mapping of burn severity but is difficult to interpret in terms of fire-related changes in key biophysical attributes and processes. We propose to quantify burn severity as a change in the leaf area index (?LAI) of a stand. LAI is a key biophysical attribute of forests, and is central to understanding their water and carbon cycles. Previous studies have suggested that changes in canopy LAI may be a major contributor to ?NBR and to the composite burn index (CBI) that is frequently used in combination with the NBR to assess burn severity on the ground. We applied remote...

2008-01-01

109

Induction and Repression of Nitrate Reductase in Neurospora crassa  

UK PubMed Central (United Kingdom)

Synthesis of wild-type Neurospora crassa assimilatory nitrate reductase is induced in the presence of nitrate ions and repressed in the presence of ammonium ions. Effects of several...Full Text Available

1978-02-01

110

If I Had - Acne As a Young Female  

Medline Plus

... VIDEO: FASDs Cause More Severe Behavioral Problems Than ADHD, Baking Soda May Slow Chronic Kidney Disease, Higher ...

111

If I Had - A Family Member with Metabolic Syndrome  

Medline Plus

... elevated blood sugar levels, but not full-blown diabetes. What are the keys to preventing the disease? ... been well studied, in a study called The Diabetes Prevention Program, in several thousand people with this ...

112

Identification of Contractile Vacuole Proteins in Trypanosoma cruzi  

UK PubMed Central (United Kingdom)

Contractile vacuole complexes are critical components of cell volume regulation and have been shown to have other functional roles in several free-living protists....Full Text Available

113

Human viral gastroenteritis.  

UK PubMed Central (United Kingdom)

During the last 15 years, several different groups of fastidious viruses that are responsible for a large proportion of acute viral gastroenteritis cases have been discovered by the electron microscopic...Full Text Available

1989-01-01

114

Genome analysis with inter-nucleotide distances  

UK PubMed Central (United Kingdom)

Motivation: DNA sequences can be represented by sequences of four symbols, but it is often useful to convert the symbols into real or complex numbers for further analysis. Several mapping...Full Text Available

2009-12-01

115

Fractal parameters and vascular networks: facts & artifacts  

UK PubMed Central (United Kingdom)

BackgroundSeveral fractal and non-fractal parameters have been considered for the quantitative assessment of the vascular architecture, using a variety of test specimens and of computational...Full Text Available

116

Facilitator control as automatic behavior: A verbal behavior analysis  

UK PubMed Central (United Kingdom)

Several studies of facilitated communication have demonstrated that the facilitators were controlling and directing the typing, although they appeared to be unaware of doing so. Such results shift...Full Text Available

1993-01-01

117

Eighth Goddard Conference on Mass Storage Systems and Technologies ...  

Science.gov (United States)

f4 f5 f1 f2. (a) Overall process decompress ...... involved the shortest learning curve, was available on several platforms, and was ...

118

Efficacy of psychosocial rehabilitation program: The RFS experience  

UK PubMed Central (United Kingdom)

Background:People with severe and persistent mental illness need help in most aspects of their lives, as the disability associated with these diseases can be debilitating....Full Text Available

2011-01-01

119

Effector Glycosyltransferases in Legionella  

UK PubMed Central (United Kingdom)

Legionella causes severe pneumonia in humans. The pathogen produces an array of effectors, which interfere with host cell functions. Among them are the glucosyltransferases Lgt1, Lgt2...Full Text Available

120

EDUCATION NEWS AT NASA - NASA Technical Report Server (NTRS)  

Science.gov (United States)

and audio technology. The exhibition will travel to muse- ums and science centers in several U.S. cities over the next 5 years. Back in the classroom, ...

121

Corn pollen deposition on milkweeds in and near cornfields  

UK PubMed Central (United Kingdom)

The density of corn pollen on leaves of milkweed plants inside and outside of cornfields was measured in several studies from different localities. The purpose was to obtain a representative picture...Full Text Available

2001-10-09

122

Comorbidities of Migraine  

UK PubMed Central (United Kingdom)

Migraine is a common neurological disorder and can be severely disabling during attacks. The highest prevalence occurs between the ages of 25 and 55 years, potentially the most productive period...Full Text Available

123

Clinical trials validate the severity of persistent Lyme disease symptoms  

British Library Electronic Table of Contents (United Kingdom)

SummaryBackground Persistent Lyme Disease Symptoms (PLDS) have included fatigue, headaches, poor concentration and memory, lightheadedness, joint pain, and mood disturbances. Evidence-based guidelines committees disagree over the severity of PLDS. The 2004 International Lyme and Associated Diseases Society (ILADS) concluded that PLDS are severe. The 2006 Infectious Disease Society of America (IDSA) guidelines committee concluded that PLDS are nothing more than the "aches and pains of daily living" and an ad hoc International Lyme group concluded that PLDS are "symptoms common in persons who have never had Lyme disease." Hypothesis Clinical trials validate the severity of persistent Lyme disease symptoms. Evaluation of the Hypothesis There are 22 standardized instruments used to measure the...

2009-01-01

124

Cellular and molecular response of human macrophages exposed to Aggregatibacter actinomycetemcomitans leukotoxin  

UK PubMed Central (United Kingdom)

Aggregatibacter (Actinobacillus) actinomycetemcomitans is a facultative anaerobic gram-negative bacterium associated with severe forms of periodontitis. A leukotoxin, which belongs...Full Text Available

2011-03-01

125

COMPARISONS OF ... - NASA Technical Report Server (NTRS)  

Science.gov (United States)

W. Wayne Scott and R. G. Alsmiller, Jr. RADIATION SHIELDING ..... W. Wayne Scott and R. G. Alsmiller, Jr., "Comparisons of Results Ob- tained with Several ...

126

Bayesian Mediation Analysis  

UK PubMed Central (United Kingdom)

This article proposes Bayesian analysis of mediation effects. Compared to conventional frequentist mediation analysis, the Bayesian approach has several advantages. First, it allows researchers...Full Text Available

2009-12-01

127

Aripiprazole augmentation in poor insight obsessive-compulsive disorder: a case report  

UK PubMed Central (United Kingdom)

BackgroundObsessive-compulsive disorder is associated with a relevant impairment in social and interpersonal functioning and severe disability. This seems to be particularly true...Full Text Available

128

Antithrombotic Prophylaxis in the Middle East  

UK PubMed Central (United Kingdom)

Several factors have been proposed to explain the persistence of a high incidence of venous thromboembolism worldwide with its associated morbidity and mortality. Underutilization of anticoagulants...Full Text Available

129

Antimicrobial activities of the methanol extract and compounds from Artocarpus communis (Moraceae)  

UK PubMed Central (United Kingdom)

BackgroundArtocarpus communis is used traditionally in Cameroon to treat several ailments, including infectious and associated diseases. This work was therefore...Full Text Available

130

An atlas of the dorsal thalamus of the marsupial brush-tailed possum, Trichosurus vulpecula.  

UK PubMed Central (United Kingdom)

In several respects the dorsal thalamus of Trichosurus presents a level of organizational complexity considerably in advance of that seen in Didelphis. In particular, such features as the lamination...Full Text Available

1978-06-01

131

An Advance in Superconducting Magnet Technology Opens the Door...  

Science.gov (United States)

magnet research at several national laboratories through its Advanced Accelerator Technology Program. The HEP Conductor Development Program, a collaboration among national...

2011-08-20

132

Adhesion of Vibrio cholerae to Granular Starches  

UK PubMed Central (United Kingdom)

Cholera is a severe diarrheal disease caused by specific serogroups of Vibrio cholerae that are pathogenic to humans. Cholera can become epidemic and deadly without adequate medical...Full Text Available

2005-08-01

133

Acquired extrahepatic portosystemic shunts in a young dog  

UK PubMed Central (United Kingdom)

AbstractA young, male miniature poodle was presented with severe neurological problems. Laboratory tests and ultrasonograph examination were consistent with extrahepatic portosystemic...Full Text Available

2006-07-01

134

Abnormal chromosome repair and risk of developing cancer.  

UK PubMed Central (United Kingdom)

Several scientists have proposed that DNA repair deficiencies and the induction of a mutator phenotype are responsible for the generation of multiple mutagenic alterations in cancer cells. I propose...Full Text Available

1993-10-01

135

A search for the epidemic typhus agent in Ethiopian ticks*  

UK PubMed Central (United Kingdom)

The presence of antibodies to Rickettsia prowazeki in domestic animals from several parts of Africa, and the isolation of this rickettsia from the blood of goats and sheep and from...Full Text Available

1973-01-01

136

A fuel treatment reduces fire severity and increases suppression efficiency in a mixed conifer forest  

Science.gov (United States)

Fuel treatments are being implemented on public and private lands across the western United States. Although scientists and managers have an understanding ... ...

137

7 1 Will Technology, Incorporated X - Marshall Space Flight Center ...  

Science.gov (United States)

reemployment, retirement (CSRS and FERS) severance pay, benefits, ... Advance Sick Leave Program, Military Leave, leave for blood donation, Sick Leave for ...

138

1,800 Years of abrupt climate change, severe fire, and accelerated erosion, Sierra Nevada, California, USA  

British Library Electronic Table of Contents (United Kingdom)

This paper provides both a detailed history of environmental change in the Sierra Nevada over the past 1,800?years and evidence for climate teleconnections between the Sierra Nevada and Greenland during the late Holocene. A review of Greenland ice core data suggests that the magnitudes of abrupt changes in temperature and precipitation increased beginning c. 3,700 and 3,000?years ago, respectively. Precipitation increased abruptly 1,300?years ago. Comparing paleotemperature data from Cirque Peak, CA with paleoprecipitation data from Pyramid Lake, NV suggests that hot temperatures occurred at the beginnings of most severe droughts in the Sierra Nevada over the past 1,800?years. Severe fires and erosion also occurred at Coburn Lake, CA at the beginning of all severe droughts in the Sierra Ne...

2011-01-01

139

Robotics for the production of several short-lived positron-emitting radiopharmaceuticals  

International Nuclear Information System (INIS)

We have recently shown the applicability of robotics to the synthesis of a positron-emitting radiopharmaceutical, namely 16#alpha#[F-18]fluoroestradiol-17#beta#, a breast tumor imaging agent. We now report the application of the robot to the synthesis of two additional radiopharmaceuticals, [F-18]spiroperiodol and [C-11]butanol. This achievement shows the power of a robot as a multifunctional automated device for the synthesis of several positron-emitting radiopharmaceuticals in limited laboratory space. (author).

140

Pumped storage in the future power supply system  

Energy Technology Data Exchange (ETDEWEB)

Pumped storage plants (PSP) supply up to several GW of power and several ten GWh of capacity. Short start-up times and low start-up costs predestine PSP for the control energy market. Grid charges for PSP endanger the further integration of renewable energy and lead to higher electricity supply costs. Therefore, an amendment of legislation is urgently required. Requirements for building large PSP are met at numerous sites in the low mountain ranges of Germany. (orig.)

2010-07-01

141

Progress posted in coal liquefaction technology  

Energy Technology Data Exchange (ETDEWEB)

This article discusses the latest developments made in the field of technology used for coal liquefaction. Some new areas of development in research and development work are described. Particular consideration is given to low-severity processing. This has two advantages, mostly low-molecular-weight fragments are produced and the extracts are low in heteroatoms. A detailed description of low-severity processing is given. The refining of the liquids produced from coal is also covered.

1986-04-28

142

Progress in lattice QCD  

Energy Technology Data Exchange (ETDEWEB)

After reviewing some of the mathematical foundations and numerical difficulties facing lattice QCD, I review the status of several calculations relevant to experimental high-energy physics. The topics considered are moments of structure functions, which may prove relevant to search for new phenomena at the LHC, and several aspects of flavor physics, which are relevant to understanding CP and flavor violation.

2002-09-30

143

Multistage skin tumor promotion: involvement of a protein kinase  

Energy Technology Data Exchange (ETDEWEB)

Current information suggests that chemical carcinogenesis is a multistep process with one of the best studied models in this regard being the two-stage carcinogenesis system using mouse skin. The effects of several carcinogens and tumor promoters in various sequences of application were studied to examine the nature of the process. The actions of several tumor inhibitors were compared. (ACR)

1980-01-01

144

Monoclonal antibodies specific for the outer surface protein A (OspA) of Borrelia burgdorferi prevent Lyme borreliosis in severe combined immunodeficiency (scid) mice.  

UK PubMed Central (United Kingdom)

We have recently shown that viable Borrelia burgdorferi organisms induce a chronic infection associated with arthritis and carditis in severe combined immunodeficiency (scid) mice but not in immunocompetent...Full Text Available

1990-05-01

145

Does monitoring need for care in patients diagnosed with severe mental illness impact on Psychiatric Service Use? Comparison of monitored patients with matched controls  

UK PubMed Central (United Kingdom)

BackgroundEffectiveness of services for patients diagnosed with severe mental illness (SMI) may improve when treatment plans are needs based. A regional Cumulative Needs for Care...Full Text Available

146

Development and evaluation for passive dosimeter using several solid dosimeters  

International Nuclear Information System (INIS)

Passive dosimeters for personal and area radiation monitor in space have been developed mainly for dosimetry in low-earth-orbit (LEO) radiation environments of Space Shuttles and the International Space Station. The responses of several dosimeters have been evaluated by heavy ions and also its variation for individual dosimeter element. (author)

2005-05-01

147

All wired up and ready to go  

Energy Technology Data Exchange (ETDEWEB)

Electric cars have long been seen as science fiction. This may be changing. As the 1990s began, several companies chose to launch publicity campaigns for electric vehicles. In California, experimental programmes are gaining momentum, in the context of LA's appalling air pollution problems and tightening clean air standards. Supporters claim that electric motive power is a key to solving several environmental problems involving atmospheric pollution. These claims are examined. (author).

1990-01-01

148

A Case of Severe Hemorrhagic Cystitis Caused by Melphalan with Successful Bladder Preservation by Ligation of Bilateral Internal Iliac Arteries  

UK PubMed Central (United Kingdom)

Hemorrhagic cystitis is a disorder which causes bleeding from diffusely inflammatory bladder mucosa. Here we present a case of severe hemorrhagic cystitis caused by melphalan. A 70-year-old man with...Full Text Available

2010-01-01

149

Present status of thermal hydraulic research in severe accident of light water reactors in Japan  

International Nuclear Information System (INIS)

Understanding of the thermal hydraulic phenomena is now the key issue in solving the severe accident problems of light water reactors. The Atomic Energy Society of Japan has organized a special committee on the evaluation of the thermal hydraulic phenomena in severe accident. The committee has continued the investigation of present status of thermal hydraulics in severe accident. Industries have completed the detailed implementation of the accident management measures, and industries have established also a self-regulatory document mainly on phase II accident management for the containment design of the future reactors. Present paper reviews the current status of evaluation activity referring to severe accident research in Japan. The phenomena included in this paper are (1) molten core behavior in lower plenum of pressure vessel, (2) fuel-coolant interaction, (3) molten core-concrete interaction, (4) ...

2000-10-01

150

Integral severe accident analysis of light water nuclear power plants by IMPACT-SAMPSON code  

Energy Technology Data Exchange (ETDEWEB)

The NUclear Power Engineering Corporation (NUPEC) has developed IMPACT-SAMPSON code to analyze integral behavior of light water nuclear power plants under severe accident conditions. IMPACT-SAMPSON's distinguishing features include interconnected hierarchical modules and mechanistic models covering a wide spectrum of scenarios ranging from normal operation to severe accident events, and high-speed simulation on parallel processing computers. The integral plant behaviors of typical PWR and BWR under severe accident conditions have been analyzed with the IMPACT-SAMPSON code. The PWR plant analyzed was the three-loop, steel-dry containment type with 2,440 MWt. The AE accident scenario was supposed, that is, LOCA by 6-inch hot leg failure followed by accumulated water injection, but no ECCS and containment spray activation. The BWR plant analyzed was the 3,293 MWt BWR-5, Mark-II containment type. The TQUV accident ...

2003-07-01

151

Hydrogen control using igniters and pars during severe accidents  

International Nuclear Information System (INIS)

Full text of publication follows: The hydrogen mitigation system of 20 igniters and 6 PARs is installed to control the hydrogen in the containment during severe accidents and design basis accidents, respectively, in Shin-Wolsung 1 and 2 nuclear power plants. The igniters are primarily installed at the hydrogen source locations, and the PARs are installed in the open spaces. The PARs will maintain the hydrogen concentration within the containment atmosphere below the limit of 4 v/o in accordance with Regulatory Guide 1.7 during design basis accidents. The igniters will maintain the hydrogen concentration within the containment atmosphere below the limit of 10 v/o in accordance with 10CFR50.34(f) during severe accidents. In addition, the PARs can be used as a supplementary means to control the hydrogen concentration during severe accidents because of their inherent passive characteristics. This paper shows the three ...

2005-12-11

152

Trichoderma-fortified compost extracts for the control of choanephora wet rot in okra production  

British Library Electronic Table of Contents (United Kingdom)

The potential of water extracts produced from rice straw (RST) and empty fruit bunch of oil palm (EFB) composts fortified with Trichoderma harzianum for the control of Choanephora wet rot of okra caused by Choanephora cucurbitarum was studied under field conditions. Disease severity was lowest in plants treated with Trichoderma-fortified RST extracts (9.56%) with a disease index of 1, mancozeb (Dithane M-45 (2gl-1 of water), Trichoderma-fortified EFB compost extracts, extracts of RST and EFB, and an aqueous suspension of T. harzianum recorded disease severity values of 10.25%, 19.38%, 37.56%, 53.71% and 56.36%, with a disease index of 1, 1, 2, 3 and 3, respectively. There was a reduction of 85.04% in Choanephora wet rot severity on okra treated with Trichoderma-fortified RST extracts durin...

2008-01-01

153

Species in the genus Turritopsis (Cnidaria, Hydrozoa): a molecular evaluation:  

British Library Electronic Table of Contents (United Kingdom)

Abstract Mitochondrial ribosomal gene sequences were used to investigate the status of several populations of hydromedusae belonging to the genus Turritopsis (family Oceaniidae). Several nominal species have been described for this genus, but most of them had been synonymized and attributed to one cosmopolitan species, Turritopsis nutricula. A recent revision based on morphological and reproductive characters, however, has shown that many different populations can be distinguished and that several of the nominal Turritopsis species are likely valid biological species. Our investigation using molecular sequence data of 16S mitochondrial gene confirms these results. The Mediterranean Turritopsis must be attributed to Turritopsis dohrnii and the Turritopsis of New Zealand must be referred to ...

2007-01-01

154

Shipping container response to three severe railway accident scenarios  

Energy Technology Data Exchange (ETDEWEB)

The probability of damage and the potential resulting hazards are analyzed for a representative rail shipping container for three severe rail accident scenarios. The scenarios are: (1) the rupture of closure bolts and resulting opening of closure lid due to a severe impact, (2) the puncture of container by an impacting rail-car coupler, and (3) the yielding of container due to side impact on a rigid uneven surface. The analysis results indicate that scenario 2 is a physically unreasonable event while the probabilities of a significant loss of containment in scenarios 1 and 3 are extremely small. Before assessing the potential risk for the last two scenarios, the uncertainties in predicting complex phenomena for rare, high- consequence hazards needs to be addressed using a rigorous methodology.

1998-04-01

155

Orthognathic treatment case after severe root resorption in the early treatment stage  

British Library Electronic Table of Contents (United Kingdom)

This article presents an orthognathic treatment case after severe apical root resorption of maxillary anterior teeth using anterior segmental osteotomy. This case involved a 20-year-old female with the chief complaint of maxillary protruding and irregularly aligned mandibular anterior teeth. Her medical history showed no allergies or medical problems. The overbite was +3.0mm, and the overjet +3.0mm. After extraction of the four first premolars, a multi-bracket treatment was started. A severe root resorption of the maxillary anterior teeth was found 12 months after active treatment. The maxillary anterior segmental osteotomy was chosen as the compensatory treatment. The total treatment period was 2 years and 7 months. The post-retention panoramic radiograph showed no developmental root reso...

2009-01-01

156

No association between affective and behavioral dysregulation and parameters of thyroid function in youths  

British Library Electronic Table of Contents (United Kingdom)

Objective: Evidence from adults suggests that changes in thyroid function are associated with the development of bipolar disorder (BD) and severe mood dysregulation. A dysregulation profile based on the Child Behavior Checklist (CBCL-DP) describes a phenotype with severe mood problems in youth. The present study investigated whether altered thyroid functioning in youths is associated with the severe mood dysregulation symptoms characterized by the CBCL-DP. Methods: We analyzed the thyroid function data from 262 children and adolescents (n=262 for serum TSH, n=148 for free triiodothyronine [fT3] and n=153 for free thyroxine [fT4]) with their CBCL-DP composite score. We created and compared high CBCL-DP and low CBCL-DP subgroups with regard to their serum TSH, fT3 and fT4 concentrations as w...

2011-01-01

157

Microstructures and mechanical properties of pure copper deformed severely by equal-channel angular pressing and high pressure torsion  

International Nuclear Information System (INIS)

Pure Cu of 99.98 wt.% purity has been processed at room temperature by diverse techniques of severe plastic deformation, namely equal-channel angular pressing (ECAP), high pressure torsion (HPT) and a combination of both in order to find out the evolution on the microstructural homogeneity for each of the processes and their combination. Starting with a grain size of #approx#60 #mu#m, severe plastic deformation has been introduced to the material while maintaining the sample dimensions unchanged through the processes of ECAP and HPT. A significant decrease in grain size was observed by transmission electronic microscopy (TEM). Microtensile and microhardness tests were carried out on the deformed material in the three processing conditions. A significant improvement of the tensile strength was promoted with admissible penalization on ductility.

2008-03-25

158

High-temperature low-cycle fatigue and tensile properties of Hastelloy X and alloy 617 in air and HTGR-helium  

Energy Technology Data Exchange (ETDEWEB)

Results of strain controlled fatigue and tensile tests are presented for two nickel base solution hardened alloys which are reference structural alloys for use in several high temperature gas cooled reactor concepts. These alloys, Hastelloy X Inconel 617, were tested at temperatures ranging from room temperature to 871/sup 0/C in air and impure helium. Materials were tested in the solution annealed as well as in the pre-aged condition where aging consisted of isothermal exposure at one of several temperatures for periods of up to 20,000 h. Comparisons are also given between the strain controlled fatigue lives of these alloys and several other commonly used alloys all tested at 538/sup 0/C.

1981-01-01

159

Explosives detector  

Energy Technology Data Exchange (ETDEWEB)

An apparatus for non-invasively inspecting an object, such as an item of luggage, for explosives material is described. It comprises a multi-channel thermal neutron inspection system having a plurality of neutron irradiation chambers. Simultaneous operation of several channels increases the maximum system throughput several times. Each chamber has a lithium neutron source which is stimulated to neutron production by a proton beam. Beam switching magnets are energised by pulsing to divert a common proton beam to each source in turn. The initial beam is generated by a radio frequency quadrupole accelerator. The advantages of this system are very low residual source activity and controllable neutron production thereby minimising safety hazards. The irradiation chamber may contain several different gamma ray detectors to identify the elements present in explosives material. In addition, a neutron radiography imaging means may ...

1991-10-02

160

Evolution of drought severity and its impact on corn in the Republic of Moldova  

British Library Electronic Table of Contents (United Kingdom)

Droughts in Moldova were evaluated using meteorological data since 1955 and a long time series (1891?2009). In addition, yields for corn (Zea mays L.), a crop widely grown in Moldova, were used to demonstrate drought impact. The main aim is to propose use of the S i (S i-a and S i-m) drought index while discussing its potential use in studying the evolution of drought severity in Moldova. Also, a new multi-scalar drought index, the standardized precipitation?evapotranspiration index (SPEI), is tested for the first time in identifying drought variability in Moldova while comparing it with the commonly used standardized precipitation index (SPI). S i-m, SPI, SPEI, and S i-a indices show an increasing tendency toward more intensive and prolonged severely dry and extremely dry summer months. D...

2011-01-01

161

Evaluation and optimization of organosolv pretreatment using combined severity factors and response surface methodology  

British Library Electronic Table of Contents (United Kingdom)

In this study, ethanol organosolv pretreatment was investigated and optimized for the pretreatment of empty palm fruit bunch using (1) response surface methodology based on three-variable central composite design and (2) the combined severity parameters. The reaction parameters studied were sulfuric acid concentration (0.5-2.0%), reaction temperature (160-200^oC) and residence time (45-90min). Both models provide valuable and complementary informations: using combined severity parameters, very good predictions were obtained concerning xylan and lignin extraction whereas central composite design is the best model for glucose production. The optimal values of the variables were as the followings: sulfuric acid 2.0% w/w, 160^oC, 78min and the experimental values (96.0%) concerning glucose and...

2011-01-01

162

Effects of Sleep Apnea Severity on Glycemic Control in Patients with Type 2 Diabetes Prior to Continuous Positive Airway Presssure Treatment  

British Library Electronic Table of Contents (United Kingdom)

Abstract Background: Obstructive sleep apnea (OSA), a highly prevalent condition, is independently associated with increased risks of developing type 2 diabetes mellitus (T2D) and metabolic syndrome. It is unclear, however, if the severity of OSA has any impact on glycemic control among patients with T2D. We therefore aimed to determine the independent association between OSA severity and glycosylated hemoglobin (HbA1c) in patients with T2D. Methods: This was an observational cross-sectional study of 52 consecutive patients attending the diabetes obesity clinic between January 2008 to February 2010 with risk factors for sleep apnea and who underwent polysomnography study. Clinical, demographic, and lifestyle data were recorded using a questionnaire. Results: Prevalence of OSA in this clini...

2011-01-01

163

Disruptive core relocation analysis of PHEBUS/FPT0 test with SAMPSON code  

International Nuclear Information System (INIS)

SAMPSON is an integration of twelve analysis modules under the final development phase (phase-2) and will be capable of simulating hypothesized severe accidents in a nuclear power plant. One of these modules, the Molten Core Relocation Analysis (MCRA) module, simulates the relocation behavior of a molten core during a severe accident. MCRA models severe accident phenomena by using mechanistic formulations for multi-phase, multi-component, and multi-velocity field. As one of the verification studies of SAMPSON in Phase-1, the in-core phenomena of PHEBUS/FPT0 was analyzed with three modules, MCRA, fuel rod heat up analysis (FRHA) module, and the analysis control module (ACM) of SAMPSON. (author)

2000-10-01

164

Comparisons of the SCDAP computer code with bundle data under severe accident conditions  

International Nuclear Information System (INIS)

The SCDAP computer code, which is being developed under the sponsorship of the United States Nuclear Regulatory Commission, models the progression of light water reactor core damage including core heatup, core disruption and debris formation, debris heatup, and debris melting. SCDAP is being used to help identify and understand the phenomena that control core behavior during a severe accident, to help quantify uncertainties in risk assessment analysis, and to support planning and interpretation of severe fuel damage experiments and data. Comparisons between SCDAP calculations and the experimental data showed good agreement. Calculated and measured bundle temperatures for SFD-ST were within 200 K for the entire bundle and within 20 K for maximum cladding temperatures. For ESSI-2, calculated and measured maximum cladding temperatures were within 50 K, and the extensive liquefaction and relocation that was calculated was in agreement with ...

1983-08-22

165

Biomarkers for infants at risk for necrotizing enterocolitis: clues to prevention?  

Science.gov (United States)

Necrotizing enterocolitis (NEC) is the most common severe gastrointestinal emergency that affects premature newborns. This disease often has a rapid onset with few, if any, antecedent signs that can be used to reliably predict its occurrence. Its rapid onset and progression to death, as well as its severe morbidity when the infant survives, begs for early diagnostic tools that may be used in determining those infants who would be at greatest risk for development of the disease and for whom early preventative measures could be targeted. Although studies have suggested efficacy of several techniques such as breath hydrogen, inflammatory mediators in blood, urine or stool, and genetic markers, these all have drawbacks limiting their use. The application of newly developed "omic" approaches may provide biomarkers for early diagnosis and targeted prevention of this disease. PMID:19190533

2009-05-01

166

p53 mutation in breast cancer. Correlation with cell kinetics and cell of origin  

UK PubMed Central (United Kingdom)

Aim: Several studies have investigated the expression of the cytokeratins (CKs), vimentin, the epithelial growth factor receptor (EGFR), the oestrogen receptor (ER), and the progesterone...Full Text Available

2002-06-01

167

Why were "starvation diets" promoted for diabetes in the pre-insulin period?  

UK PubMed Central (United Kingdom)

In the decade before the discovery of insulin, the prominent American physicians Frederick Allen and Elliott Joslin advocated severe fasting and undernutrition to prolong the lives of diabetic patients....Full Text Available

168

Vital Redundancy: The Case for Organic Airlift Capability in Air ...  

Science.gov (United States)

... AFSOC could look at several aircraft as candidates, including the C-27J, C-130J, and KC-767. ... C-130 aircraft (except C-130J) are normally limited ...

2009-04-01

169

Visible light and risk of age-related macular degeneration.  

UK PubMed Central (United Kingdom)

Sunlight exposure has been suggested as a cause of AMD. To examine this, we collected detailed histories of ocular sun exposure in 838 watermen who work on the Chesapeake Bay. The presence and severity...Full Text Available

1990-01-01

170

Vibrios Associated with Litopenaeus vannamei Larvae, Postlarvae, Broodstock, and Hatchery Probionts  

UK PubMed Central (United Kingdom)

Several bacteriological surveys were performed from 1994 to 1996 at different Litopenaeus vannamei hatcheries (in Ecuador) and shrimp farms (in Mexico). Samples were taken from routine...Full Text Available

1999-06-01

171

Vesicle stabilization and destabilization for application in chemical reagent storage and release. Final progress report, 15 June 1091-30 November 1995  

Energy Technology Data Exchange (ETDEWEB)

The project involved several studies of vesicles and micelles and their constituent surfactants. The primary objective of the project was an elucidation of factors involved in the stabilization and destabilization of vesicles and micelles. Work was performed on seven individual studies. Several different types of novel cleavable surfactants were synthesized, including systems with two chains and two head groups, and their aqueous micelles and vesicles were characterized by methods including dynamic laser light scattering (to give aggregate sizes) and differential scanning calorimetry (to give vesicle bilayer phase transition temperatures). A cleavable surfactant is stable under certain conditions but liable under other conditions with respect to cleavage to give nonsurfactant products and/or other surfactants with different properties. The destruction of several cleavable surfactant-derived aggregates was demonstrated, ...

1996-03-19

172

Use of oral miltefosine for cutaneous leishmaniasis in Canadian soldiers returning from Afghanistan  

UK PubMed Central (United Kingdom)

Old world cutaneous leishmaniasis (CL) is caused by Leishmania major and Leishmania tropica, and is endemic to several Asian and Middle-Eastern countries where the...Full Text Available

2008-11-01

173

Type I Collagen Is a Genetic Modifier of Matrix Metalloproteinase 2 in Murine Skeletal Development  

UK PubMed Central (United Kingdom)

Recessive inactivating mutations in human matrix metalloproteinase 2 (MMP2, gelatinase A) are associated with syndromes that include abnormal facial appearance, short stature, and severe bone...Full Text Available

2007-06-01

174

Two amyloid states of the prion protein display significantly different folding patterns  

UK PubMed Central (United Kingdom)

SummaryIt has been well established that a single amino acid sequence can give rise to several conformationally distinct amyloid states. The extent to which amyloid structures...Full Text Available

2010-07-23

175

Traumatic extremity arterial injury in children: Epidemiology, diagnostics, treatment and prognostic value of Mangled Extremity Severity Score  

UK PubMed Central (United Kingdom)

BackgroundTraumatic paediatric arterial injuries are a great challenge due to low incidence and specific characteristics of paediatric anatomy and physiology. The aim of the present...Full Text Available

176

Transposable elements in fish functional genomics: technical challenges and perspectives  

UK PubMed Central (United Kingdom)

The recent introduction of several transposable elements in zebrafish opens new frontiers for genetic manipulation in this important vertebrate model. This review discusses transposable elements as...Full Text Available

2007-01-01

177

Transient Ischemic Attack Before Nonlacunar Ischemic Stroke in the Elderly  

UK PubMed Central (United Kingdom)

Background:Several studies suggest transient ischemic attack (TIA) may be neuroprotective against ischemic stroke analogous to preinfarction angina's protection against...Full Text Available

2008-09-01

178

Transcatheter Arterial Embolization in Patients with Kidney Diseases: an Overview of the Technical Aspects and Clinical Indications  

UK PubMed Central (United Kingdom)

Therapeutic embolization is defined as the voluntary occlusion of one or several vessels, and this is achieved by inserting material into the lumen to obtain transient or permanent thrombosis in the...Full Text Available

2010-05-01

179

Timing of Erythropoiesis-Stimulating Agent Initiation and Adverse Outcomes in Nondialysis CKD: a Propensity-Matched Observational Study  

UK PubMed Central (United Kingdom)

Background and objectives: The severity of anemia at which to initiate erythropoiesis-stimulating agent (ESA) treatment in nondialysis chronic kidney disease (CKD) patients is unclear. Risk of mortality,...Full Text Available

2010-05-01

180

Three Phases of Plant Response to Atmospheric CO2 Enrichment 1  

UK PubMed Central (United Kingdom)

Several years of research on seven different plants (five terrestrial and two aquatic species) suggest that the beneficial effects of atmospheric CO2 enrichment may be divided into three...Full Text Available

1988-05-01

181

Theoretical Models and Operational Frameworks in Public Health Ethics  

UK PubMed Central (United Kingdom)

The article is divided into three sections: (i) an overview of the main ethical models in public health (theoretical foundations); (ii) a summary of several published frameworks for public health ethics...Full Text Available

2010-01-01

182

The viroid and viroid-like RNA database.  

UK PubMed Central (United Kingdom)

The viroid and viroid-like RNA database is a compilation of all natural sequences published in journals or available from the GenBank and EMBL nucleotide sequence libraries. Several information regarding...Full Text Available

1998-01-01

183

The use of advanced tracking technologies for the analysis of mobility in Alzheimer's disease and related cognitive diseases  

UK PubMed Central (United Kingdom)

BackgroundOne of the more common behavioral manifestations of dementia-related disorders is severe problems with out-of-home mobility. Various efforts have been attempted to attain...Full Text Available

184

The treatment of diabetic foot infections: focus on ertapenem  

UK PubMed Central (United Kingdom)

Clinically, 3 distinct stages of diabetic foot infection may be recognized: localized infection, spreading infection and severe infection. Each of these presentations may be complicated by osteomyelitis....Full Text Available

2009-01-01

185

The causes, consequences, and treatment of left or right heart failure  

UK PubMed Central (United Kingdom)

Chronic heart failure (HF) is a cardiovascular disease of cardinal importance because of several factors: a) an increasing occurrence due to the aging of the population, primary and secondary prevention...Full Text Available

2011-01-01

186

The Use of a Mobile Laboratory Unit in Support of Patient Management and Epidemiological Surveillance during the 2005 Marburg Outbreak in Angola  

UK PubMed Central (United Kingdom)

BackgroundMarburg virus (MARV), a zoonotic pathogen causing severe hemorrhagic fever in man, has emerged in Angola resulting in the largest outbreak of Marburg hemorrhagic fever...Full Text Available

187

The RNA Chaperone Hfq Is Important for Growth and Stress Tolerance in Francisella novicida  

UK PubMed Central (United Kingdom)

The RNA-binding protein Hfq is recognized as an important regulatory factor in a variety of cellular processes, including stress resistance and pathogenesis. Hfq has been shown in several bacteria to...Full Text Available

188

The Oxazolidinone Derivative Locostatin Induces Cytokine Appeasement1  

UK PubMed Central (United Kingdom)

Damaging inflammation arising from autoimmune pathology and septic responses results in severe cases of disease. In both instances, anti-inflammatory compounds are used to limit the excessive...Full Text Available

2009-12-01

189

The Optical Videodisc in Computer Based Education  

UK PubMed Central (United Kingdom)

In a new approach to medical computer based education (CBE) students at several U.S. and Canadian health professions schools have been using an optical videodisc under computer control to study basic...Full Text Available

1984-11-07

190

The Non-linear Relationship between Gait Speed and Falls: The MOBILIZE Boston Study  

UK PubMed Central (United Kingdom)

OBJECTIVESAlthough several studies suggest that slow gait speed is a predictor of falls, it may also be a protective mechanism to prevent falls. Further, fast walking...Full Text Available

2011-06-01

191

The Canadian Beef Industry  

UK PubMed Central (United Kingdom)

The cattle industry in Canada has changed greatly over the past several decades. Size of the national dairy herd has reduced steadily but this reduction has been more than offset by an increase in...Full Text Available

1980-02-01

192

Tendency to adhere to provider-recommended treatments and subsequent pain severity among individuals with cancer  

UK PubMed Central (United Kingdom)

BackgroundPatients’ general tendency to adhere to health care provider-recommended treatments is associated with a number of health outcomes, but whether it influences pain...Full Text Available

193

Targeting the Pentose Phosphate Pathway in Syndrome X-related Cardiovascular Complications  

UK PubMed Central (United Kingdom)

Syndrome X is a combination or co-occurrence of several known cardiovascular risk factors (including central obesity, dyslipidemias, fatty liver disease, hyperinsulinemia, insulin resistance,...Full Text Available

2010-05-01

194

Sulfate Reduction by a Desulfovibrio Species Isolated from Sheep Rumen1  

UK PubMed Central (United Kingdom)

Several dissimilatory, sulfate-reducing bacteria were isolated from the rumen fluid of sheep fed purified diets containing sulfate. One isolate, strain D, was selected for characterization. This organism...Full Text Available

1974-09-01

195

Submergence-Induced Morphological, Anatomical, and Biochemical Responses in a Terrestrial Species Affect Gas Diffusion Resistance and Photosynthetic Performance  

UK PubMed Central (United Kingdom)

Gas exchange between the plant and the environment is severely hampered when plants are submerged, leading to oxygen and energy deficits. A straightforward way to reduce these shortages of oxygen and...Full Text Available

2005-09-01

196

Structural formulae for some classes of analytic functions in a finitely connected domain  

Science.gov (United States)

Several central results of the method of structural formulae for some classes of analytic functions, which were known before for a disc and an annulus, are generalized to analytic functions in a finitely connected circular domain.

1997-12-01

197

Some properties of low-mass stellar models with chemically inhomogeneous neutral-stability zones  

Energy Technology Data Exchange (ETDEWEB)

Several low-mass models with an inhomogeneous radiative core and a convective envelope are investigated, the entire core or its upper portion being treated as a zone of neutral stability. Mixing by convective overshoot will then give rise to unstable structure.

1983-03-01

198

Snoring as a Risk Factor for Sexual Dysfunction in Community Men  

UK PubMed Central (United Kingdom)

IntroductionSevere obstructive sleep apnea has been associated with sexual dysfunction; however, it is unclear whether milder forms of sleep disturbances might also...Full Text Available

2008-04-01

199

Severe teratozoospermia and its influence on pronuclear morphology, embryonic cleavage and compaction  

UK PubMed Central (United Kingdom)

BackgroundFertilization, cell division and embryo development depend on genomic contributions from male and female gametes. We hypothesize that teratozoospermic sperm influences...Full Text Available

200

Severe Hypocalcemia due to Vitamin D Deficiency after Extended Roux-en-Y Gastric Bypass  

UK PubMed Central (United Kingdom)

Vitamin D deficiency is a well-known comorbidity of obesity that can be exacerbated after bariatric surgery and can predispose the patient for hypocalcemia. Vitamin D and calcium doses to prevent and...Full Text Available

2011-01-01

201

Sequential interim analyses of survival data in DNA microarray experiments  

UK PubMed Central (United Kingdom)

BackgroundDiscovery of biomarkers that are correlated with therapy response and thus with survival is an important goal of medical research on severe diseases, e.g. cancer. Frequently,...Full Text Available

202

Selected Physical and Chemical Properties of Feverfew (Tanacetum parthenium) Extracts Important for Formulated Product Quality and Performance  

UK PubMed Central (United Kingdom)

The objectives of this research are: (1) to assess selected formulation-relevant physical properties of several commercial Feverfew extracts, including flowability, hygroscopicity, compressibility and...Full Text Available

203

Role of the Domestic Chicken (Gallus gallus)in the Epidemiology of Urban Visceral Leishmaniasis in Brazil  

UK PubMed Central (United Kingdom)

Zoonotic visceral leishmaniasis (ZVL) is a serious public health problem in several Brazilian cities. Although the proximity of chicken houses is often cited as a risk factor in studies of urban ZVL,...Full Text Available

2002-12-01

204

Role of Respiratory Nitrate Reductase in Ability of Pseudomonas fluorescens YT101 To Colonize the Rhizosphere of Maize  

UK PubMed Central (United Kingdom)

Selection of the denitrifying community by plant roots (i.e., increase in the denitrifier/total heterotroph ratio in the rhizosphere) has been reported by several authors. However, very few studies...Full Text Available

2000-09-01

205

Role of IgG and complement component C5 in the initial course of experimental cryptococcosis.  

UK PubMed Central (United Kingdom)

Although cellular immunity has a crucial role during cryptococcosis, several in vitro studies have pointed out the importance of IgG anti-Cryptococcus neoformans antibodies and complement components...Full Text Available

1989-12-01

206

Role of Bv8 in neutrophil-dependent angiogenesis in a transgenic model of cancer progression  

UK PubMed Central (United Kingdom)

The secreted Bv8 protein has been recently characterized as a regulator of myeloid cell mobilization and a neutrophil-derived mediator of tumor angiogenesis in several xenografts, but its role in tumor...Full Text Available

2008-02-19

207

Risks of consumption of contaminated seafood: the Quincy Bay case study.  

UK PubMed Central (United Kingdom)

A recent EPA-sponsored study of sediment and seafood contamination in Quincy Bay revealed elevated levels of several complex organic pollutants frequently of concern in human health assessments. A seafood...Full Text Available

1991-01-01

208

Risedronate Prevents Early Radiation-Induced Osteoporosis in Mice at Multiple Skeletal Locations  

UK PubMed Central (United Kingdom)

IntroductionIrradiation of normal, non-malignant bone during cancer therapy can lead to atrophy and increased risk of fracture at several skeletal sites, particularly...Full Text Available

2010-01-01

209

Rifampin pharmacokinetics in children, with and without human immunodeficiency virus infection, hospitalized for the management of severe forms of tuberculosis  

UK PubMed Central (United Kingdom)

BackgroundRifampin is a key drug in antituberculosis chemotherapy because it rapidly kills the majority of bacilli in tuberculosis lesions, prevents relapse and thus enables 6-month...Full Text Available

210

Replication of Extended Lifespan Phenotype in Mice with Deletion of Insulin Receptor Substrate 1  

UK PubMed Central (United Kingdom)

We previously reported that global deletion of insulin receptor substrate protein 1 (Irs1) extends lifespan and increases resistance to several age-related pathologies in female mice....Full Text Available

211

Renal functions in pediatric patients with beta-thalassemia major: relation to chelation therapy: original prospective study  

UK PubMed Central (United Kingdom)

BackgroundIn β-thalassemia, profound anemia and severe hemosiderosis cause functional and physiological abnormalities in various organ systems. In recent years, there have...Full Text Available

212

Remarks With Estonian Foreign Minister Urmas Paet After Their...  

Science.gov (United States)

especially since your attack several years ago. I was wondering, in the wake of WikiLeaks, what the Estonians can help the U.S. with in terms of developing an - as...

2011-09-18

213

Reinfusion of ascites during hemodialysis as a treatment of massive refractory ascites and acute renal failure  

UK PubMed Central (United Kingdom)

Refractory ascites can occur in patients with various conditions. Although several procedures based on the reinfusion of ascitic fluid have been reported after the failure of bed rest, salt and water...Full Text Available

214

Regulation of Energy Metabolism Pathways by Estrogens and Estrogenic Chemicals and Potential Implications in Obesity Associated with Increased Exposure to Endocrine Disruptors  

UK PubMed Central (United Kingdom)

The prevalence of obesity among children, adolescents and adults has been dramatically increasing worldwide during the last several decades. The obesity epidemic has been recognized as one of...Full Text Available

2009-07-01

215

Refractive outcome following diode laser versus cryotherapy for eyes with retinopathy of prematurity.  

UK PubMed Central (United Kingdom)

The refractive error in 15 eyes with threshold retinopathy of prematurity treated with diode laser photocoagulation was compared with 25 eyes with the same disease severity treated by cryotherapy. Myopia...Full Text Available

1994-08-01

216

Recovery of Pathogenic Measles Virus from Cloned cDNA  

UK PubMed Central (United Kingdom)

Reverse genetics technology so far established for measles virus (MeV) is based on the Edmonston strain, which was isolated several decades ago, has been passaged in nonlymphoid cell lines, and is no...Full Text Available

2000-07-01

217

Rapid, reversible activation of AgRP neurons drives feeding behavior in mice  

UK PubMed Central (United Kingdom)

Several different neuronal populations are involved in regulating energy homeostasis. Among these, agouti-related protein (AgRP) neurons are thought to promote feeding and weight gain; however, the...Full Text Available

2011-04-01

218

Rapid technique of DNA-DNA in situ hybridisation on formalin fixed tissue sections using microwave irradiation.  

UK PubMed Central (United Kingdom)

The relative sensitivities of different protocols for detecting cytomegalovirus nucleic acid sequences in histological specimens, using a biotinylated cDNA probe, were assessed. Several commonly used...Full Text Available

1987-08-01

219

Rapid Action on Neuroplasticity Precedes Behavioral Activation by Testosterone  

UK PubMed Central (United Kingdom)

Testosterone has been shown to increase the volume of steroid-sensitive brain nuclei in adulthood in several vertebrate species. In male Japanese quail the volume of the male-biased sexually...Full Text Available

2008-09-01

220

Radio frequency noise from an MLC: a feasibility study of the use of an MLC for linac-MR systems  

UK PubMed Central (United Kingdom)

Currently several groups are actively researching the integration of a megavoltage teletherapy unit with magnetic resonance (MR) imaging for real-time image-guided radiotherapy. The use of a...Full Text Available

2010-02-21

221

RXR activators molecular signalling: involvement of a PPAR?-dependent pathway in the liver and kidney, evidence for an alternative pathway in the heart  

UK PubMed Central (United Kingdom)

In this study we compared the molecular signalling elicited by rexinoids, selective retinoid X receptor (RXR)-activators, in several organs (i.e. liver, kidney,...Full Text Available

2003-03-01

222

Qualitative and Quantitative Effects of Treatment for Dental Fear and Avoidance  

UK PubMed Central (United Kingdom)

In a Swedish community-based program for the treatment of dental phobic patients, a clinical trial was performed among 99 severely phobic individuals with long-standing avoidance of dental treatment....Full Text Available

1986-01-01

223

Proteomic approach with LCMS-IT-TOF identified an increase of Rab33B after transient focal cerebral ischemia in mice  

UK PubMed Central (United Kingdom)

BackgroundSeveral proteins are known to be markedly expressed in the brain during cerebral ischemia; however, the changes in protein profiles within the ischemic brain after an ischemic...Full Text Available

224

Progress in osteoporosis and fracture prevention: focus on postmenopausal women  

UK PubMed Central (United Kingdom)

In the past decade, we have witnessed a revolution in osteoporosis diagnosis and therapeutics. This includes enhanced understanding of basic bone biology, recognizing the severe consequences of fractures...Full Text Available

2009-01-01

225

Primary structure and regulation of vegetative specific genes of Dictyostelium discoideum.  

UK PubMed Central (United Kingdom)

We have examined the expression and structure of several genes belonging to two classes of vegetative specific genes of the simple eukaryote, Dictyostelium discoideum. In amebae grown on bacteria, deactivation...Full Text Available

1989-12-11

226

Prevention and treatment of functional and structural radiation injury in the rat heart by pentoxifylline and alpha-tocopherol  

UK PubMed Central (United Kingdom)

PurposeRadiation-induced heart disease (RIHD) is a severe side effect of thoracic radiotherapy. This study examined the effects of PTX and α-tocopherol on...Full Text Available

2008-09-01

227

Preliminary parasitological results of a pilot mollusciciding campaign to control transmission of Schistosoma mansoni in St Lucia*  

UK PubMed Central (United Kingdom)

A mollusciciding campaign was begun in Cul-de-Sac Valley, St Lucia, at the end of 1970, following several years of epidemiological studies in which transmission of Schistosoma mansoni...Full Text Available

1976-01-01

228

Preemptive analgesia: the prevention of neurogenous orofacial pain.  

UK PubMed Central (United Kingdom)

Chronic neurogenous pain is often an extremely difficult condition to manage. In the orofacial region, trauma from injury or dental procedures may lead to the development of severe neuralgic pains and...Full Text Available

1995-01-01

229

Pre-fire treatment effects and understory plant community response ...  

Science.gov (United States)

Sep 28, 2011 ... Source: Flagstaff, AZ: Northern Arizona University. 87 p. Thesis. Description: High severity wildfires have been increasing across southwestern ...

230

Potentials for composites from agro-based fibers  

Energy Technology Data Exchange (ETDEWEB)

A composite is any combination of two or more resources held together by some type of mastic or matrix. This report will describe several different types of composites with regard to thermoplasticization, improved mechanical properties, and stiffness.

1995-12-01

231

Potassium channels as a potential therapeutic target for trigeminal neuropathic and inflammatory pain  

UK PubMed Central (United Kingdom)

Previous studies in several different trigeminal nerve injury/inflammation models indicated that the hyperexcitability of primary afferent neurons contributes to the pain pathway underlying mechanical...Full Text Available

232

Posttraumatic growth, posttraumatic stress disorder and resilience of motor vehicle accident survivors  

UK PubMed Central (United Kingdom)

BackgroundAlthough some previous studies have suggested that posttraumatic growth (PTG) is comprised of several factors with different properties, few have examined both the association...Full Text Available

233

Population genetic analysis of large sequence polymorphisms in Plasmodium falciparum blood-stage antigens  

UK PubMed Central (United Kingdom)

Plasmodium falciparum, the causative agent of human malaria, invades host erythrocytes using several proteins on the surface of the invasive merozoite, which have been proposed...Full Text Available

2010-03-01

234

Pneumothorax and Pneumomediastinum in Pregnancy: A Case Report  

UK PubMed Central (United Kingdom)

Case Report. A 37 years old patient at 40 weeks gestation presented with acute severe hypoxia with a seizure followed by fetal bradycardia. Caesarean section was performed under...Full Text Available

2009-01-01

235

Plant and algal interference in bacterial beta-D-galactosidase and beta-D-glucuronidase assays.  

UK PubMed Central (United Kingdom)

Several commonly occurring freshwater and marine plants and algae were screened for beta-D-galactosidase and beta-D-glucuronidase activities by using a 60-min enzyme assay based on the hydrolysis by...Full Text Available

1994-11-01

236

Physical Activity and Telomere Biology: Exploring the Link with Aging-Related Disease Prevention  

UK PubMed Central (United Kingdom)

Physical activity is associated with reduced risk of several age-related diseases as well as with increased longevity in both rodents and humans. Though these associations are well established, evidence...Full Text Available

237

Pericardiectomy for Pleuropericardial Effusion Complicating Bacterial Pneumonia  

UK PubMed Central (United Kingdom)

Severe pericardial effusion is a rare complication of bacterial pneumonia and it usually disappears under medical treatment. Herein we report a case of a girl with a congenital immunodeficient syndrome...Full Text Available

2010-01-01

238

Percutaneous absorption of aromatic amines in rubber industry workers: impact of impaired skin and skin barrier creams  

UK PubMed Central (United Kingdom)

BackgroundSeveral aromatic amines (AA) could cause bladder cancer and are an occupational hygiene problem in the workplace. However, little is known about the percutaneous absorption...Full Text Available

2007-06-01

239

Parietal Cortex and Episodic Memory: An Attentional Account  

UK PubMed Central (United Kingdom)

The contribution of the parietal cortex to episodic memory is a fascinating scientific puzzle. On one hand, parietal lesions do not normally yield severe episodic memory deficits, but on the...Full Text Available

2008-08-01

240

Parallel helix bundles and ion channels: molecular modeling via simulated annealing and restrained molecular dynamics.  

UK PubMed Central (United Kingdom)

A parallel bundle of transmembrane (TM) alpha-helices surrounding a central pore is present in several classes of ion channel, including the nicotinic acetylcholine receptor (nAChR). We have modeled...Full Text Available

1994-10-01

241

PHARMACOLOGICAL TREATMENTS FOR TINNITUS: NEW AND OLD  

UK PubMed Central (United Kingdom)

Subjective tinnitus, the phantom ringing or buzzing sensation that occurs in the absence of sound, affects 12–14% of adults; in some cases the tinnitus is so severe or disabling that...Full Text Available

2009-01-01

242

PFP MICON DCS computer software documentation  

Energy Technology Data Exchange (ETDEWEB)

This document contains the complete printout of the MICON A/S system configuration used in the Plutonium Finishing Plant. The document is divided into several volumes. Volume 1 covers the workstation display and configuration. All other volumes contain the controller configurations, or programs.

1996-03-26

243

Outcome of patients with systemic rheumatic disease admitted to medical intensive care units.  

UK PubMed Central (United Kingdom)

The outcome of patients admitted to intensive care units is known to be influenced by such factors as age, previous health status, severity of disease, and diagnosis. To estimate the outcome of such...Full Text Available

1992-05-01

244

Outbreak of acute colitis on a horse farm associated with tetracycline-contaminated sweet feed.  

UK PubMed Central (United Kingdom)

Exposure of a group of horses to tetracycline-contaminated feed resulted in acute colitis and subsequent death in one horse and milder diarrhea in 3 others. The most severely affected animal demonstrated...Full Text Available

1999-10-01

245

Optical properties of A-15 thin films and single crystals  

Energy Technology Data Exchange (ETDEWEB)

Optical absorptance spectra of A-15 compounds were taken using a calorimetric technique in the range 0.2 eV to 4.0 eV. Thermomodulation spectra were taken on several A-15 sputtered films.

1980-01-01

246

Optical properties of A-15 thin films and single crystals  

International Nuclear Information System (INIS)

Optical absorptance spectra of A-15 compounds were taken using a calorimetric technique in the range 0.2 eV to 4.0 eV. Thermomodulation spectra were taken on several A-15 sputtered films.

247

Opioids and the Treatment of Chronic Pain: Controversies, Current Status, and Future Directions  

UK PubMed Central (United Kingdom)

Opioids have been regarded for millennia as among the most effective drugs for the treatment of pain. Their use in the management of acute severe pain and chronic pain related to advanced medical...Full Text Available

2008-10-01

248

On the internal perceptual structure of distinctive features: The [voice] contrast  

UK PubMed Central (United Kingdom)

Several fixed classification experiments test the hypothesis that F1, f0, and closure voicing covary between intervocalic stops contrasting...Full Text Available

2008-01-01

249

On the defence notion  

CERN Document Server

'Trojan horses', 'logic bombs', 'armoured viruses' and 'cryptovirology' are terms recalling war gears. In fact, concepts of attack and defence drive the world of computer virology, which looks like a war universe in an information society. This war has several shapes, from invasions of a network by worms, to military and industrial espionage ...

2007-01-01

250

On Being the Right Size: The Impact of Population Size and Stochastic Effects on the Evolution of Drug Resistance in Hospitals and the Community  

UK PubMed Central (United Kingdom)

The evolution of drug resistant bacteria is a severe public health problem, both in hospitals and in the community. Currently, some countries aim at concentrating highly specialized services in large...Full Text Available

2011-04-01

251

New common variants affecting susceptibility to basal cell carcinoma  

UK PubMed Central (United Kingdom)

In a follow-up to our previously reported genome-wide association study of cutaneous basal cell carcinoma (BCC)1, we describe here several new susceptibility...Full Text Available

2009-08-01

252

Neurocysticerkose. Svoer neurocysticerkose hos et barn.  

DEFF Research Database (Denmark)

A case of neurocysticercosis with progressive severe neurological symptoms is described. The patient was a Turkish girl aged 4 1/2 years who had experienced intermittent neurological symptoms for two years. Rapid diagnosis and treatment with praziquantel and corticosteroid resulted in complete restitution.

1992-01-01

253

Multivariate analyses reveal common and drug specific genetic influences on responses to four drugs of abuse  

UK PubMed Central (United Kingdom)

Vulnerability to abused drugs is influenced by multiple genes unique to each drug as well as to risk genes for polydrug abuse. If several inbred mouse strains respond to different drugs similarly,...Full Text Available

2008-11-01

254

Mortality of persons resident in the vicinity of electricity transmission facilities.  

UK PubMed Central (United Kingdom)

Several studies have raised the possibility that exposure to electrical and/or magnetic fields may be injurious to health in particular by the promotion or initiation of cancer. To investigate whether...Full Text Available

1986-02-01

255

Molecular Characterization of Aluminium (aluminum) Tolerance in Rye  

Science.gov (United States)

Aluminium (Al) toxicity, affecting around half of the world¿s arable land, severely hinders the ability of crop plants to utilize moisture and nutrients by restricting root growth and function. Among the cultivated cereals, rye is the most Al-tolerant and represents an important potential source of ...

256

Metal Ions-Stimulated Iron Oxidation in Hydroxylases Facilitates Stabilization of HIF-1? Protein  

UK PubMed Central (United Kingdom)

The exposure of cells to several metal ions stabilizes HIF-1α protein. However, the molecular mechanisms are not completely understood. They may involve inhibition of hydroxylation by either...Full Text Available

2009-02-01

257

Medical language processing with SGML display.  

UK PubMed Central (United Kingdom)

The paper demonstrates several ways that medical language processing can be combined with emerging display technologies to facilitate the extraction of data from free-text patient documents. The techniques...Full Text Available

1996-01-01

258

Mechanism of L-glutamate transport in membrane vesicles from Bacillus stearothermophilus.  

UK PubMed Central (United Kingdom)

In the presence of electrochemical energy, several branched-chain neutral and acidic amino acids were found to accumulate in membrane vesicles of Bacillus stearothermophilus. The membrane vesicles contained...Full Text Available

1989-02-01

259

Maximum proton kinetic energy and patient-generated neutron fluence considerations in proton beam arc delivery radiation therapy  

UK PubMed Central (United Kingdom)

Several compact proton accelerator systems for use in proton therapy have recently been proposed. Of paramount importance to the development of such an accelerator system is the maximum kinetic energy...Full Text Available

2009-02-01

260

Mammalian Sirtuins and Energy Metabolism  

UK PubMed Central (United Kingdom)

Sirtuins are highly conserved NAD+-dependent protein deacetylases and/or ADP-ribosyltransferases that can extend the lifespan of several lower model organisms including yeast, worms and flies....Full Text Available

261

Major inducing factors of hypertensive complications and the interventions required to reduce their prevalence: an epidemiological study of hypertension in a rural population in China  

UK PubMed Central (United Kingdom)

BackgroundThe complications of hypertension cause severe health problems in rural areas in China. We (i) screened the major factors inducing hypertensive complications and provided...Full Text Available

262

Magnetic resonance imaging in multiple sclerosis. Imagerie nouvelle par resonance magnetique nucleaire au cours de la sclerose en plaques  

Energy Technology Data Exchange (ETDEWEB)

Magnetic resonance imaging (MRI) has rapidly attained a major position among the examinations used in the diagnostic approach of multiple sclerosis because it is highly sensitive in demonstrating lesions. However, these lesional images may have several meanings, and there is the problem of distinguishing between oedema, which is said to reflect recent lesions, and gliosis which is thought to betray old lesions. The intrinsic MRI parameters studied (i.e. relaxation times) are unable to make this distinction, whereas it is provided by paramagnetic contrast media such as gadolinium. There is no correlation between the changes observed at MRI and the severity of the disease. Another problem is the accuracy of lesion localization, since visualization is predominantly macroscopic. This raises several questions about the demonstration of correlations between clinical signs and site of the lesion(s). At the moment, ...

1991-09-15

263

MELCOR analyses of NUPEC`s large-scale hydrogen mixing test-II  

Energy Technology Data Exchange (ETDEWEB)

NUPEC has carried out hydrogen mixing tests to investigate hydrogen distribution behavior within a model containment and to provide a set of experimental data for validation of severe accident analysis codes.

1995-12-31

264

Low-severity catalytic two-stage liquefaction process: Final summary report, 1 September 1985--February 1988  

Science.gov (United States)

Hydrocarbon Research, Inc. (HRI) has been actively involved in the development of a low-severity two-stage coal liquefaction process. Since inception of the concept of low-temperature, first-stage hydrogenation followed by a higher temperature second-stage hydrocracking operation, in 1982, efforts have been concentrated on this process. This final report covers development efforts under both contracts from October 1983 to March 1988. The major objective was to reduce process severity and improve economics. Studies were conducted on Illinois No. 6 and Ohio No. 5/6 bitumen coals and included several process variable experiments, catalyst testing, use of cleaned coal and evaluation process recycle options. The total effort included 277 days onstream of continuous bench-scale operations, and data analysis and process modeling, and engineering design and economic studies are reported herein. 13 refs., 15 figs., 40 tabs.

1988-09-01

265

Low-pressure degenerate four-wave mixing spectroscopy with flam atomization  

Energy Technology Data Exchange (ETDEWEB)

A combination of degenerate four-wave mixing spectroscopy and a low-pressure sampling technique has been studied for isotopic analysis in an air-acetylene flame. Hyperfine spectra of D lines of sodium and several mixtures of lithium isotopes obtained in this way are presented.

1988-08-01

266

Large-scale association analysis of TNF/LTA gene region polymorphisms in type 2 diabetes  

UK PubMed Central (United Kingdom)

BackgroundThe TNF/LTA locus has been a long-standing T2D candidate gene. Several studies have examined association of TNF/LTA...Full Text Available

267

Landscape determinants and remote sensing of anopheline mosquito larval habitats in the western Kenya highlands  

UK PubMed Central (United Kingdom)

BackgroundIn the past two decades the east African highlands have experienced several major malaria epidemics. Currently there is a renewed interest in exploring the possibility...Full Text Available

268

Kidney Function Influences Warfarin Responsiveness and Hemorrhagic Complications  

UK PubMed Central (United Kingdom)

Although management of warfarin is challenging for patients with chronic kidney disease (CKD), no prospective studies have compared response to warfarin among patients with minimal, moderate, and severe...Full Text Available

2009-04-01

269

Isolation and characterization of a new Cytophaga species implicated in a work-related lung disease.  

UK PubMed Central (United Kingdom)

A yellow-pigmented, gram-negative, gliding bacterium isolated from an industrial water spray air humidification system was implicated as a causative agent in several occurrences of lung disease with...Full Text Available

1984-11-01

270

Is globalization good for your health?  

UK PubMed Central (United Kingdom)

Four points are made about globalization and health. First, economic integration is a powerful force for raising the incomes of poor countries. In the past 20 years several large developing countries...Full Text Available

2001-01-01

271

Investigation and prediction of the severity of p53 mutants using parameters from structural calculations  

UK PubMed Central (United Kingdom)

A method has been developed to predict the effects of mutations in the p53 cancer suppressor gene. The new method uses novel parameters combined with previously established parameters. The most important...Full Text Available

2009-08-01

272

Intraoperative angioembolization in the management of pelvic-fracture related hemodynamic instability  

UK PubMed Central (United Kingdom)

BackgroundThis case series report discusses patients presenting with hemorrhage and hemodymanic compromise due to severe pelvic fractures and undergoing intraoperative angioembolization...Full Text Available

273

Intracavity irradiation with deferred radioactive load technique, remote control high activity sources  

Energy Technology Data Exchange (ETDEWEB)

From December 1981 to September 1986, 149 patients were treated at the Radiotherapy Department of the Hospital Clinico y Provincial of Barcelona by means of intracavity irradiation with 137 cesium high 1 sources and 2. To 112 of the total number of patients external radiotherapy to the whole of the pelvis using photons of 6 MeV was also administered. A total of 46 (30.7%) patients presented rectal complications. The rectitis observed was mild in 16 cases (10.7%), moderate in 15(10%) and severe in 15(10%). The 15 patients with severe rectitis had to be treated by unloading colostomy. In patients with severe complications, the maximum total rectal dose administered was between 5,855 and 9,490 cGy, and the maximum rectal dose administered via curietherapy was 1,055 to 7,320 cGy. Maximum total rectal dose administration greater than 4,000 cGy and maximum rectal dose administered via curietherapy greater than 5,800 cGy were ...

1988-01-01

274

Interaction of Heparins and Dextran Sulfates with a Mesoscopic Protein Nanopore  

UK PubMed Central (United Kingdom)

AbstractA mechanism of how polyanions influence the channel formed by Staphylococcus aureus α-hemolysin is described. We demonstrate that the probability of several...Full Text Available

2009-12-02

275

Induction of mortality and malformation in Xenopus laevis embryos by water sources associated with field frog deformities.  

UK PubMed Central (United Kingdom)

Water samples from several ponds in Minnesota were evaluated for their capacity to induce malformations in embryos of Xenopus laevis. The FETAX assay was used to assess the occurrence of malformations...Full Text Available

1998-12-01

276

Increased expression of cholesterol transporter ABCA1 is highly correlated with severity of dementia in AD hippocampus  

UK PubMed Central (United Kingdom)

To gain insight into ATP-binding cassette transporter A1 (ABCA1) function and its potential role in AD pathology, we analyzed the expression of the cholesterol transporter ABCA1...Full Text Available

2010-03-08

277

Increased NO bioavailability in aging male rats by genistein and exercise training: using 4, 5-diaminofluorescein diacetate  

UK PubMed Central (United Kingdom)

BackgroundSeveral kinds of anti-oxidants have drawn a lot of intension for their benefits on vascular protection. In addition, it has been demonstrated that exercise training could...Full Text Available

278

In Vivo Reconstitution of ?-Secretase in Drosophila Results in Substrate Specificity?  

UK PubMed Central (United Kingdom)

The intramembrane aspartyl protease γ-secretase plays a fundamental role in several signaling pathways involved in cellular differentiation and has been linked with a variety of human diseases,...Full Text Available

2010-07-01

279

Importance of gastrin in the pathogenesis and treatment of gastric tumors  

UK PubMed Central (United Kingdom)

In addition to regulating acid secretion, the gastric antral hormone gastrin regulates several important cellular processes in the gastric epithelium including proliferation, apoptosis, migration, invasion,...Full Text Available

2009-01-07

280

Impact of diffuse nitrate pollution sources on groundwater quality--some examples from Czechoslovakia.  

UK PubMed Central (United Kingdom)

In several regions of Czechoslovakia with intensive agricultural production, the correlation between the amount of nitrogen fertilizer applied and the nitrate content in groundwater has been recognized....Full Text Available

1989-11-01

281

Impact of Plasmodium falciparum infection on the frequency of moderate to severe anaemia in children below 10 years of age in Gabon  

UK PubMed Central (United Kingdom)

BackgroundImproving the understanding of childhood malarial anaemia may help in the design of appropriate management strategies.MethodsA...Full Text Available

282

Impact of Bt corn pollen on monarch butterfly populations: A risk assessment  

UK PubMed Central (United Kingdom)

A collaborative research effort by scientists in several states and in Canada has produced information to develop a formal risk assessment of the impact of Bt corn on monarch butterfly...Full Text Available

2001-10-09

283

Identification of the Response Parameters of a Geothermal Field During a Non-Isothermal Short Time Water Injection Test.  

Science.gov (United States)

Various methods to analyse the effect of a non-isotherme water injection on the pressure evolution during a test on a double geothermal well are investigated. Then, several types of injection test are simulated with experimental data to examine the condit...

1983-01-01

284

Identification of Genes Affecting the Toxicity of Anti-Cancer Drug Bortezomib by Genome-Wide Screening in S. pombe  

UK PubMed Central (United Kingdom)

Bortezomib/PS-341/Velcade, a proteasome inhibitor, is widely used to treat multiple myeloma. While several mechanisms of the cytotoxicity of the drug were proposed, the actual mechanism remains elusive....Full Text Available

285

Identification and expression of differentially expressed genes in the hard clam, Mercenaria mercenaria, in response to quahog parasite unknown (QPX)  

UK PubMed Central (United Kingdom)

BackgroundThe hard clam, Mercenaria mercenaria, has been affected by severe mortality episodes associated with the protistan parasite QPX (Quahog Parasite Unknown)...Full Text Available

286

I. Cyclopeptide Alkaloids; II. Phycocyanobilipeptides.  

Science.gov (United States)

Several examples of the 14-membered, para-bridged ring system of the cyclopeptide alkaloids have been synthesized via an active ester cyclization. The yield of monomeric cyclopeptide varied from 1 to 33% and was affected by the amino acid substitution pat...

1979-01-01

287

Homozygous SLC2A9 Mutations Cause Severe Renal Hypouricemia  

UK PubMed Central (United Kingdom)

Hereditary hypouricemia may result from mutations in the renal tubular uric acid transporter URAT1. Whether mutation of other uric acid transporters produces a similar phenotype is unknown. We studied...Full Text Available

2010-01-01

288

High Shear Stress at the Surface of Enhancing Plaque in the Systolic Phase is Related to the Symptom Presentation of Severe M1 Stenosis  

UK PubMed Central (United Kingdom)

The computational fluid dynamics methods for the limited flow rate and the small dimensions of an intracranial artery stenosis may help demonstrate the stroke mechanism in intracranial atherosclerosis....Full Text Available

2011-07-01

289

Hepatic stellate cells and parasite-induced liver fibrosis  

UK PubMed Central (United Kingdom)

Fibrogenesis is a common feature of many diseases where there is severe insult to the liver. The hepatic stellate cell trans-differentiation into a myofibroblast has been identified as an important...Full Text Available

290

Health related quality of life among Iraqi immigrants settled in Malaysia  

UK PubMed Central (United Kingdom)

BackgroundMigrants everywhere face several demands for health and maintaining good health and quality of life could be challenging. Iraqis are the second largest refugee group that...Full Text Available

291

Hair Mercury Negatively Correlates with Calcium Pump Activity in Human Term Newborns and Their Mothers at Delivery  

UK PubMed Central (United Kingdom)

BackgroundCalcium homeostasis is a known target of several environmental toxicants including lead and mercury.ObjectiveOur goal was to determine...Full Text Available

2008-02-01

292

HPV16 E2 could act as down-regulator in cellular genes implicated in apoptosis, proliferation and cell differentiation  

UK PubMed Central (United Kingdom)

BackgroundHuman Papillomavirus (HPV) E2 plays several important roles in the viral cycle, including the transcriptional regulation of the oncogenes E6 and E7, the regulation of the...Full Text Available

293

Gyrase B Inhibitor Impairs HIV-1 Replication by Targeting Hsp90 and the Capsid Protein*  

UK PubMed Central (United Kingdom)

Chemical genetics is an emerging approach to investigate the biology of host-pathogen interactions. We screened several inhibitors of ATP-dependent DNA motors and detected the gyrase B inhibitor coumermycin...Full Text Available

2010-12-10

294

Geophysical Remote Sensing - The Remote Sensing Tutorial - NASA  

Science.gov (United States)

It was thus actually the fourth stage of the rocket assembly. ... package, and several temperature sensors - was mounted in the cross-lattice frame. ... Earth's geomagnetic field and incoming charged particles from the Sun and extra-solar space. ...

295

General lack of global dosage compensation in ZZ/ZW systems? Broadening the perspective with RNA-seq  

UK PubMed Central (United Kingdom)

BackgroundSpecies with heteromorphic sex chromosomes face the challenge of large-scale imbalance in gene dose. Microarray-based studies in several independent male heterogametic...Full Text Available

296

Gene-silencing reveals the functional significance of pheromone biosynthesis activating neuropeptide receptor (PBAN-R) in a male moth  

UK PubMed Central (United Kingdom)

The role of pheromone biosynthesis activating neuropeptide (PBAN) in the regulation of pheromone biosynthesis of several female moth species is well elucidated, but its role in the males has been a...Full Text Available

2010-09-28

297

Gene expression patterns in four brain areas associate with quantitative measure of estrous behavior in dairy cows  

UK PubMed Central (United Kingdom)

BackgroundThe decline noticed in several fertility traits of dairy cattle over the past few decades is of major concern. Understanding of the genomic factors underlying fertility,...Full Text Available

298

Gaussian profile estimation in one dimension  

UK PubMed Central (United Kingdom)

We present several new results on the classic problem of estimating Gaussian profile parameters from a set of noisy data, showing that an exact solution of the maximum likelihood equations exists...Full Text Available

2007-08-01

299

Functional and Behavioral Restoration of Vision by Gene Therapy in the Guanylate Cyclase-1 (GC1) Knockout Mouse  

UK PubMed Central (United Kingdom)

BackgroundRecessive mutations in guanylate cyclase-1 (Gucy2d) are associated with severe, early onset Leber congenital amaurosis-1(LCA1). Gucy2d...Full Text Available

300

Frequency of Aneuploidy Related to Age in Porcine Oocytes  

UK PubMed Central (United Kingdom)

It is generally accepted that mammalian oocytes are frequently suffering from chromosome segregation errors during meiosis I, which have severe consequences, including pregnancy loss, developmental...Full Text Available

301

Formal reasoning on qualitative models of coinfection of HIV and Tuberculosis and HAART therapy  

UK PubMed Central (United Kingdom)

BackgroundSeveral diseases, many of which nowadays pandemic, consist of multifactorial pathologies. Paradigmatic examples come from the immune response to pathogens, in which cases...Full Text Available

302

Finding Autonomy in Birth*  

UK PubMed Central (United Kingdom)

Over the last several years, as cesarean deliveries have grown increasingly common, there has been a great deal of public and professional interest in the phenomenon of women ‘choosing’...Full Text Available

2009-01-01

303

Fetal ascites: an unusual presentation of Niemann-Pick disease type C.  

UK PubMed Central (United Kingdom)

Two infants were seen with severe ascites detected before birth, a previously unreported presentation of Niemann-Pick disease type C. In the second infant no diagnostic storage cells were present in...Full Text Available

1989-10-01

304

Feasibility Study for Integrated Tax Management System (Kenya) (Final Report, Public Version, Revised).  

Science.gov (United States)

The Kenya Revenue Authority (KRA) has been engaged in revenue administration reform for several years. Among the KRA's impressive, recent accomplishments is the integration of formerly separate departments for income taxes and value added taxes. (VAT) und...

2006-01-01

305

Extracellular Administration of BCL2 Protein Reduces Apoptosis and Improves Survival in a Murine Model of Sepsis  

UK PubMed Central (United Kingdom)

BackgroundSevere sepsis and septic shock are major causes of morbidity and mortality worldwide. In experimental sepsis there is prominent apoptosis of various cell types, and genetic...Full Text Available

306

Excessive Soft Tissue Reaction after Stereotactic Body Radiation Therapy in a Woman with Four Different Cancer Diagnoses  

UK PubMed Central (United Kingdom)

Patients experiencing several cancers can be a challenge, as optimal treatment options for the different cancers might interfere with each other. In this case report, we present a woman diagnosed with...Full Text Available

307

Examination of transepithelial exchange of water and solute in the rat renal pelvis.  

UK PubMed Central (United Kingdom)

Severance of the ureter beyond the renal papilla causes a fall in urinary osmolality, which suggests that exchange of water or solute between urine and renal parenchyma normally occurs in the intact...Full Text Available

1984-11-01

308

Evolutionary history and the effect of biodiversity on plant productivity  

UK PubMed Central (United Kingdom)

Loss of biological diversity because of extinction is one of the most pronounced changes to the global environment. For several decades, researchers have tried to understand how changes in biodiversity...Full Text Available

2008-11-04

309

Evidence-based guidelines for the pharmacological treatment of postmenopausal osteoporosis: a consensus document by the Belgian Bone Club  

UK PubMed Central (United Kingdom)

Several drugs are available for the management of postmenopausal osteoporosis. This may, in daily practice, confuse the clinician. This manuscript offers an evidence-based update of previous treatment...Full Text Available

2010-10-01

310

Evaluation of the OptiMAL Test for Rapid Diagnosis of Plasmodium vivax and Plasmodium falciparum Malaria  

UK PubMed Central (United Kingdom)

The development of rapid and specific diagnostic tests to identify individuals infected with malaria is of paramount importance in efforts to control the severe public health impact of this disease....Full Text Available

1998-01-01

311

Evaluation of Oral Administration of Adenine to Dogs and Primates.  

Science.gov (United States)

Little change was observed in primates fed 75 mg/kg adenine over the four-week period. Minimal tissue pathology was encountered upon completion of the study. In contrast to earlier studies in which oral feeding of adenine to dogs caused severe symptoms, a...

1974-01-01

312

Ethylene Regulates Monomeric GTP-Binding Protein Gene Expression and Activity in Arabidopsis1  

UK PubMed Central (United Kingdom)

Ethylene rapidly and transiently up-regulates the activity of several monomeric GTP-binding proteins (monomeric G proteins) in leaves of Arabidopsis as determined by two-dimensional gel electrophoresis...Full Text Available

2003-04-01

313

Epidermal keratinocytes do not activate peripheral T-cells: interleukin-10 as a possible regulator  

UK PubMed Central (United Kingdom)

The immunogenicity of allogeneic cultured human epidermal keratinocytes (cHEKs) has been studied in several models with contradictory results. We studied human T-cell activation in an in vitro...Full Text Available

2008-11-01

314

Environmental-induced acquisition of nuptial plumage expression: a role of denaturation of feather carotenoproteins?  

UK PubMed Central (United Kingdom)

Several avian species show a bright carotenoid-based coloration during spring and following a period of duller coloration during the previous winter, despite carotenoids presumably being fully deposited...Full Text Available

2005-09-22

315

Enhanced CT in the diagnosis of acute appendicitis to evaluate the severity of disease. Comparison of CT findings and histological diagnosis  

Energy Technology Data Exchange (ETDEWEB)

To assess the potential of CT in evaluating the histological severity of acute appendicitis in comparison with surgical and pathological findings. The CT images of 75 patients with surgically proven appendicitis, including 10 cases of catarrhal, 34 of phlegmonous, and 31 of gangrenous appendicitis, were retrospectively analyzed for the following five CT findings: hazy periappendiceal densities, enlarged appendix, increased enhancement of the appendiceal wall, increased enhancement of the periappendiceal intestinal wall, and deficiency of the appendiceal wall. By comparing all the CT findings and the pathological severity of appendicitis (catarrhal, phlegmonous, and gangrenous), the prevalence of the five CT findings was calculated for each pathological category. Abnormal CT findings were noted in only one case of catarrhal appendicitis. Increased enhancement of the appendiceal wall was observed in all 29 cases of phlegmonous appendicitis ...

2001-08-01

316

Elevated Cardiac Troponin I in Sepsis and Septic Shock: No Evidence for Thrombus Associated Myocardial Necrosis  

UK PubMed Central (United Kingdom)

BackgroundElevated cardiac troponin I (cTnI) is frequently observed in patients with severe sepsis and septic shock. However, the mechanisms underlying cTnI release in these patients...Full Text Available

317

Electromagnetic tracking in the clinical environment  

UK PubMed Central (United Kingdom)

When choosing an electromagnetic tracking system (EMTS) for image-guided procedures several factors must be taken into consideration. Among others these include the system’s refresh rate, the...Full Text Available

2009-03-01

318

Efficient discovery of ASCL1 regulatory sequences through transgene pooling  

UK PubMed Central (United Kingdom)

Zebrafish transgenesis is a powerful and increasingly common strategy to assay vertebrate transcriptional regulatory control. Several challenges remain, however, to the broader application of...Full Text Available

2010-06-01

319

Effects of introducing low-frequency harmonics in the perception of vocoded telephone speech1  

UK PubMed Central (United Kingdom)

Several studies have demonstrated that telephone use presents a challenge for most cochlear implant (CI) users, and this is attributed mainly to the narrow bandwidth (300–3400 Hz) introduced...Full Text Available

2010-09-01

320

Effects of Leupeptin on Proteinase and Germination of Castor Beans 1  

UK PubMed Central (United Kingdom)

Leupeptin, a tripeptide inhibitor of some proteinases, was shown previously to maintain the stability of several enzymes (isocitrate lyase, fumarase, and catalase) in crude extracts of castor bean endosperm....Full Text Available

1981-10-01

321

Effect of lowering blood pressure on cardiovascular events and mortality in patients on dialysis: a systematic review and meta-analysis of randomised controlled trials  

UK PubMed Central (United Kingdom)

SummaryBackgroundPatients undergoing dialysis have a substantially increased risk of cardiovascular mortality and morbidity. Although several trials have shown the...Full Text Available

2009-03-21

322

Effect of Prophylactic Knee Bracing on Balance and Joint Position Sense  

UK PubMed Central (United Kingdom)

Prophylactic knee braces are designed to prevent and reduce the severity of ligamentous injuries to the knee. Conflicting evidence is reported concerning their efficacy. The purpose of this study was...Full Text Available

1996-04-01

323

EARLY BILATERAL SENSORY DEPRIVATION BLOCKS THE DEVELOPMENT OF COINCIDENT DISCHARGE IN RAT BARREL CORTEX  

UK PubMed Central (United Kingdom)

Several theories have proposed a functional role for synchronous neuronal firing in generating the neural code of a sensory perception. Synchronous neural activity develops during a critical...Full Text Available

2009-02-25

324

Dynamic Rearrangements Determine Genome Organization and Useful Traits in Soybean1[C][W  

UK PubMed Central (United Kingdom)

Soybean (Glycine max) is a paleopolyploid whose genome has gone through at least two rounds of polyploidy and subsequent diploidization events. Several studies have investigated the...Full Text Available

2009-11-01

325

Disfiguring Annular Sarcoidosis Improved by Adalimumab  

UK PubMed Central (United Kingdom)

Depending on the location, dermatoses can produce blemishes that severely impair quality of life and require highly effective treatment that is otherwise used for extensive skin involvement. We report...Full Text Available

326

Direct liquefaction contractors' review meeting: Proceedings  

Energy Technology Data Exchange (ETDEWEB)

Research programs on coal liquefaction are presented. Major topics include: coprocessing, two-stage liquefaction, low severity liquefaction, coal/catalyst and liquefaction chemistry. Individual projects are processed separately for the data bases. (CBS)

1988-01-01

327

Dietary Glycaemic Index, Dietary Glycaemic Load, and Incidence of Myocardial Infarction in Women  

UK PubMed Central (United Kingdom)

The association of dietary glycaemic index (GI) and glycaemic load (GL) with cardiovascular diseases has been examined in several populations with varying results. We tested the hypothesis that...Full Text Available

2010-04-01

328

Detection and Identification of Bartonella Species Pathogenic for Humans by PCR Amplification Targeting the Riboflavin Synthase Gene (ribC)  

UK PubMed Central (United Kingdom)

Several Bartonella species have now been implicated as human pathogens. The recovery of these fastidious organisms in the clinical microbiology laboratory remains difficult, and current...Full Text Available

2003-03-01

329

Dengue Fever in Humanized NOD/SCID Mice  

UK PubMed Central (United Kingdom)

The increased transmission and geographic spread of dengue fever (DF) and its more severe presentation, dengue hemorrhagic fever (DHF), make it the most important mosquito-borne viral disease of humans...Full Text Available

2005-11-01

330

Cyclophilin B Interacts with Sodium-Potassium ATPase and Is Required for Pump Activity in Proximal Tubule Cells of the Kidney  

UK PubMed Central (United Kingdom)

Cyclophilins (Cyps), the intracellular receptors for Cyclosporine A (CsA), are responsible for peptidyl-prolyl cis-trans isomerisation and for chaperoning several membrane proteins. Those functions...Full Text Available

331

Current practices in the spatial analysis of cancer: flies in the ointment  

UK PubMed Central (United Kingdom)

While many lessons have been learned from the spatial analysis of cancer, there are several caveats that apply to many, if not all such analyses. As "flies in the ointment", these can substantially...Full Text Available

332

Cumulative effects of protracted irradiation of Chernobyl exclusive zone plants  

International Nuclear Information System (INIS)

The biological and radiobiological peculiarities of seeds and seedlings of the Rumex confertus and Lupinus polycolor plants, which grown during several generations in plots with different level of radionuclide pollution of the Chernobyl exclusive zone have been investigated.

2005-01-01

333

Crassulacean Acid Metabolism and Epiphytism Linked to Adaptive Radiations in the Orchidaceae1[OA  

UK PubMed Central (United Kingdom)

Species of the large family Orchidaceae display a spectacular array of adaptations and rapid speciations that are linked to several innovative features, including specialized pollination syndromes,...Full Text Available

2009-04-01

334

Cortical Neuritic Plaques and Hippocampal Neurofibrillary Tangles are Related to Dementia Severity in Elderly Schizophrenia Patients  

UK PubMed Central (United Kingdom)

Cognitive decline has been described in elderly patients with schizophrenia, but the underlying pathology remains unknown. Some studies report increases in plaques and neurofibrillary tangles,...Full Text Available

2010-01-01

335

Correlates of new onset peripheral nerve injury in comatose psychotropic drug overdose patients  

UK PubMed Central (United Kingdom)

Aims:To investigate the relationship between the duration of comatose state, severity of rhabdomyolysis and frequency of peripheral nerve injury (PNI) in patients following...Full Text Available

2011-07-01

336

Cordoba and Wolsung Projects: A Progress Report.  

Science.gov (United States)

The Cordoba and Wolsung projects mark the entry into the international sales arena of the standardized Canadian 600 MWe CANDU-PHW reactor design. The Cordoba station experienced a setback in the early stages when severe inflation in Argentina led to a ren...

1977-01-01

337

Continuous and Periodic Expansion of CAG Repeats in Huntington's Disease R6/1 Mice  

UK PubMed Central (United Kingdom)

Huntington's disease (HD) is one of several neurodegenerative disorders caused by expansion of CAG repeats in a coding gene. Somatic CAG expansion rates in HD vary between organs, and the greatest instability...Full Text Available

2010-12-01

338

Computer-Assisted Discovery and Proof  

Energy Technology Data Exchange (ETDEWEB)

With the advent of powerful, widely-available mathematical software, combined with ever-faster computer hardware, we are approaching a day when both the discovery and proof of mathematical facts can be done in a computer-assisted manner. his article presents several specific examples of this new paradigm in action.

2007-12-10

339

Comprehensive Analysis of Blood Culture Performed at Nine University Hospitals in Korea  

UK PubMed Central (United Kingdom)

BackgroundOptimal blood culture performance is critical for successful diagnosis and treatment of sepsis. To understand the status of blood culture, we investigated several aspects...Full Text Available

2011-04-01

340

Comparison of oral and vaginal metronidazole for treatment of bacterial vaginosis in pregnancy: impact on fastidious bacteria  

UK PubMed Central (United Kingdom)

BackgroundBacterial vaginosis (BV) is a common condition that is associated with preterm birth and acquisition of complex communities of vaginal bacteria that include several fastidious...Full Text Available

341

Comparison of hemodynamic, biochemical and hematological parameters of healthy pregnant women in the third trimester of pregnancy and the active labor phase  

UK PubMed Central (United Kingdom)

BackgroundPregnancy is accompanied by several hemodynamic, biochemical and hematological changes which revert to normal values after labor. The mean values of these parameters have...Full Text Available

342

Comparative analysis of cis-regulation following stroke and seizures in subspaces of conserved eigensystems  

UK PubMed Central (United Kingdom)

BackgroundIt is often desirable to separate effects of different regulators on gene expression, or to identify effects of the same regulator across several systems. Here, we focus...Full Text Available

343

Combining fMRI with EEG and MEG in order to relate patterns of brain activity to cognition  

UK PubMed Central (United Kingdom)

The common factor that underlies several types of functional brain imaging is the electric current of masses of dendrites. The prodigious demands for the energy that is required to drive the...Full Text Available

2009-07-01

344

Cocaine induces cell death and activates the transcription nuclear factor kappa-b in pc12 cells  

UK PubMed Central (United Kingdom)

Cocaine is a worldwide used drug and its abuse is associated with physical, psychiatric and social problems. The mechanism by which cocaine causes neurological damage is very complex and involves several...Full Text Available

345

Clostridium perfringens Delta Toxin Is Sequence Related to Beta Toxin, NetB, and Staphylococcus Pore-Forming Toxins, but Shows Functional Differences  

UK PubMed Central (United Kingdom)

Clostridium perfringens produces numerous toxins, which are responsible for severe diseases in man and animals. Delta toxin is one of the three hemolysins released by a number of C....Full Text Available

346

Clinical Significance of the Detection of Antinuclear Antibodies in Patients with Acute Hepatitis A  

UK PubMed Central (United Kingdom)

Background/AimsThe findings of several recent studies suggest that antinuclear antibodies (ANAs) are frequently detected in patients with acute hepatitis A (AHA). However, the clinical...Full Text Available

2011-09-01

347

Climate models and scenarios  

Energy Technology Data Exchange (ETDEWEB)

In recent years the modelling of interannual climate variability has been studied, the atmospheric energy and water cycles, and climate simulations with the ECHAM3 model. In addition, the climate simulations of several models have been compared with special emphasis in the area of northern Europe

1996-12-31

348

Chronobiological analysis and mass spectrometric characterization of pigment-dispersing factor in the cockroach Leucophaea maderae  

UK PubMed Central (United Kingdom)

Pigment-dispersing factor (PDF) is a neuropeptide that plays a prominent role in the circadian clock of several insects. The cockroach Leucophaea maderae...Full Text Available

349

Characterizing and estimating rice brown spot disease severity using stepwise regression, principal component regression and partial least-square regression*  

UK PubMed Central (United Kingdom)

Detecting plant health conditions plays a key role in farm pest management and crop protection. In this study, measurement of hyperspectral leaf reflectance in rice crop (Oryzasativa...Full Text Available

2007-10-01

350

Characterization of the functional gene and several processed pseudogenes in the human triosephosphate isomerase gene family.  

UK PubMed Central (United Kingdom)

The functional gene and three intronless pseudogenes for human triosephosphate isomerase were isolated from a recombinant DNA library and characterized in detail. The functional gene spans 3.5 kilobase...Full Text Available

1985-07-01

351

Characterization of the binding sites for dicarboxylic acids on bovine serum albumin.  

UK PubMed Central (United Kingdom)

Dicarboxylic acids are prominent features of several diseases, including Reye's syndrome and inborn errors of mitochondrial and peroxisomal fatty acid oxidation. Moreover, dicarboxylic acids are potentially...Full Text Available

1991-06-15

352

Characterization of the Key Step for Light-driven Hydrogen Evolution in Green Algae*  

UK PubMed Central (United Kingdom)

Under anaerobic conditions, several species of green algae perform a light-dependent hydrogen production catalyzed by a special group of [FeFe] hydrogenases termed HydA. Although highly interesting...Full Text Available

2009-12-25

353

Cell-density-dependent Changes in the Metabolism of Chloronema Cell Cultures  

UK PubMed Central (United Kingdom)

In the growing chloronema cell suspension cultures of the moss Funaria hygrometrica Hedw., activities of several enzymes have been found to be cell-density-dependent. Cyclic nucleotide...Full Text Available

1979-07-01

354

Canadian Emergency DepartmentTriage and Acuity Scale: implementation in a tertiary care center in Saudi Arabia  

UK PubMed Central (United Kingdom)

BackgroundThe Canadian Emergency Department Triage and Acuity Scale (CTAS) is a well recognized and validated triage system that prioritizes patient care by severity of illness....Full Text Available

355

CT evaulation of thoracic and abdominal fatty masses  

International Nuclear Information System (INIS)

The diagnostic accuracy of computed tomography (CT) in several patterns of thoracic and abdominal fatty masses, has been examined. In selected cases our findings overlap the features of the recent literature. The possibility of surgical therapy in peculiar cases of adipose deposits, commonly esteemed benign, is considered.

1986-01-01

356

Buoyant Densities and Dry-Matter Contents of Microorganisms: Conversion of a Measured Biovolume into Biomass  

UK PubMed Central (United Kingdom)

Several isolates of bacteria and fungi from soil, together with cells released directly from soil, were studied with respect to buoyant density and dry weight. The specific volume (cubic centimeters...Full Text Available

1983-04-01

357

Breakdown of the Blood-Brain Barrier during Tick-Borne Encephalitis in Mice Is Not Dependent on CD8+ T-Cells  

UK PubMed Central (United Kingdom)

Tick-borne encephalitis (TBE) virus causes severe encephalitis with serious sequelae in humans. The disease is characterized by fever and debilitating encephalitis that can progress to chronic illness...Full Text Available

358

Biotransformation of Explosives by the Old Yellow Enzyme Family of Flavoproteins  

UK PubMed Central (United Kingdom)

Several independent studies of bacterial degradation of nitrate ester explosives have demonstrated the involvement of flavin-dependent oxidoreductases related to the old yellow enzyme (OYE) of yeast....Full Text Available

2004-06-01

359

Biochemical analysis of PIFTC3, the Trypanosoma brucei ortholog of nematode DYF-13, reveals interactions with established and putative intraflagellar transport components  

UK PubMed Central (United Kingdom)

DYF-13, originally identified in C. elegans within a collection of dye-filling chemosensory mutants, is one of several proteins that have been classified as putatively involved...Full Text Available

2010-10-01

360

Becoming a general practitioner - Which factors have most impact on career choice of medical students?  

UK PubMed Central (United Kingdom)

BackgroundIn Germany, there is a shortage of young physicians in several specialties, the situation of general practitioners (GP) being especially precarious. The factors influencing...Full Text Available

361

Bathymetry and temperature of some glacial lakes in Wyoming  

UK PubMed Central (United Kingdom)

On the west flank of the Wind River Mountains, Wyoming, are several large lakes occupying glacially scoured depressions dammed by terminal moraines. Fremont, Willow, and New Fork Lakes, having maximal...Full Text Available

1980-04-01

362

Bacterial Oxidation of Sulfide Minerals in Column Leaching Experiments at Suboptimal Temperatures  

UK PubMed Central (United Kingdom)

The purpose of the work was to quantitatively characterize temperature effects on the bacterial leaching of sulfide ore material containing several sulfide minerals. The leaching was tested at eight...Full Text Available

1992-02-01

363

Association between skin diseases and severe bacterial infections in children: case-control study  

UK PubMed Central (United Kingdom)

BackgroundSepsis or bacteraemia, however rare, is a significant cause of high mortality and serious complications in children. In previous studies skin disease or skin infections...Full Text Available

364

Association Analysis of Nuclear Receptor Rev-erb Alpha Gene (NR1D1) and Japanese Methamphetamine Dependence  

UK PubMed Central (United Kingdom)

Several investigations suggested abnormalities in circadian rhythms are related to the pathophysiology of psychiatric disorders, including drug addiction. Recently, orphan nuclear receptor rev-erb alpha...Full Text Available

2011-03-01

365

Applications of Zigzag Persistence to Topological Data Analysis  

CERN Document Server

The theory of zigzag persistence is a substantial extension of persistent homology, and its development has enabled the investigation of several unexplored avenues in the area of topological data analysis. In this paper, we discuss three applications of zigzag persistence: topological bootstrapping, parameter thresholding, and the comparison of witness complexes.

2011-01-01

366

Anti-CD47 antibody synergizes with rituximab to promote phagocytosis and eradicate non-Hodgkin lymphoma  

UK PubMed Central (United Kingdom)

SummaryMonoclonal antibodies are standard therapeutics for several cancers including the anti-CD20 antibody rituximab for B cell non-Hodgkin lymphoma (NHL). Rituximab and other...Full Text Available

2010-09-03

367

Animal models of human amyloidoses: Are transgenic mice worth the time and trouble?  

UK PubMed Central (United Kingdom)

The amyloidoses are the prototype gain of toxic function protein misfolding diseases. As such, several naturally occurring animal models and their inducible variants provided some of the first...Full Text Available

2009-08-20

368

Angiomatoid giant cellular blue nevus of vaginal wall associated with pregnancy  

UK PubMed Central (United Kingdom)

BackgroundBlue nevi that arise from the Müllerian tract are rare melanocytic lesions. Several histopathologic variants of cellular blue nevi have been described. The angiomatoid...Full Text Available

369

Angina with a normal coronary angiogram caused by amyloidosis  

UK PubMed Central (United Kingdom)

A case of severe intractable angina pectoris with normal angiography is presented. Following video assisted thoracic sympathectomy the patient died of heart failure. Microvascular cardiac amyloidosis...Full Text Available

2004-09-01

370

An outbreak of sand impaction in postpartum dairy cows  

UK PubMed Central (United Kingdom)

Twenty-two cases of indigestion occurred in a 650-cow herd. Five cows had severe sand abomasal impaction, diagnosed by laparotomy. The pH of prepartum cows’ urine was < 6.0 and of sand...Full Text Available

2007-10-01

371

An Evaluation of Cellular Neural Networks for the Automatic Identification of Cephalometric Landmarks on Digital Images  

UK PubMed Central (United Kingdom)

Several efforts have been made to completely automate cephalometric analysis by automatic landmark search. However, accuracy obtained was worse than manual identification in every study. The analogue-to-digital...Full Text Available

2009-01-01

372

Amorphigenin inhibits Osteoclast differentiation by suppressing c-Fos and nuclear factor of activated T cells  

UK PubMed Central (United Kingdom)

Among the several rotenoids, amorphigenin is isolated from the leaves of Amopha Fruticosa and it is known that has anti-proliferative effects and anti-cnacer effects in many cell types....Full Text Available

2010-12-01

373

Air shifting diffusion; Diffusion d'air par deplacement  

Energy Technology Data Exchange (ETDEWEB)

The technique of air diffusion by shifting presents several advantages in terms of thermal comfort, indoor air quality and energy conservation. This book presents the principle, dimensioning, and implementation of air shifting diffusion systems. (J.S.)

2001-07-01

374

Aggressive behaviour of solid-pseudopapillary tumor of the pancreas in adults: A case report and review of the literature  

UK PubMed Central (United Kingdom)

Solid-pseudopapillary tumor (SPT) is a rare neoplasm of the pancreas that usually occurs in young females. It is generally considered a low-grade malignant tumor that can remain asymptomatic for several...Full Text Available

2008-02-14

375

Adaptation of a Foot Plate for Use in an Isokinetic and Isotonic Leg Press  

UK PubMed Central (United Kingdom)

The use of isokinetic equipment and the leg press exercise have been major components of rehabilitation for the past several years when redeveloping muscular strength. Recently, closed kinetic chain...Full Text Available

1996-04-01

376

Activity-Dependent Augmentation of Spontaneous Neurotransmission during Endoplasmic Reticulum Stress  

UK PubMed Central (United Kingdom)

The endoplasmic reticulum (ER) is an essential cellular compartment responsible for Ca2+ sequestration, signaling, protein translation, folding as well as transport. Several acute...Full Text Available

2010-05-26

377

Accumulation of Plasmodium berghei-Infected Red Blood Cells in the Brain Is Crucial for the Development of Cerebral Malaria in Mice?  

UK PubMed Central (United Kingdom)

Cerebral malaria is the most severe complication of human infection with Plasmodium falciparum. It was shown that Plasmodium berghei ANKA-induced cerebral malaria was...Full Text Available

2010-09-01

378

Accelerator aspects of #gamma#-#gamma# colliders  

International Nuclear Information System (INIS)

There are several on-going projects of e"+e"- colliders. If they are constructed, we can convert them into photon-photon (#gamma#-#gamma#) colliders by converting electron beams into #gamma# beams, irradiating laser beams just before the interaction point. In this report we discuss the technical issues on the accelerator.

2000-11-21

379

Aberrant repair and fibrosis development in skeletal muscle  

UK PubMed Central (United Kingdom)

The repair process of damaged tissue involves the coordinated activities of several cell types in response to local and systemic signals. Following acute tissue injury, infiltrating inflammatory cells...Full Text Available

380

AGEs Secreted by Bacteria Are Involved in the Inflammatory Response  

UK PubMed Central (United Kingdom)

Advanced Glycated End Products (AGEs) are formed by non-enzymatic protein glycation and are implicated in several physiological aspects including cell aging and diseases. Recent data indicate that bacteria...Full Text Available

381

A survey on clinical presentation and nutritional status of infants with suspected cow' milk allergy  

UK PubMed Central (United Kingdom)

BackgroundCow's milk is the most common food allergen in infants and the diagnosis of cow's milk allergy is difficult, even with the use of several diagnostic tests. Therefore, elimination...Full Text Available

382

A study on brain CT of neurological endemic cretinism  

International Nuclear Information System (INIS)

A study on brain CT was made in 20 cases of typical endemic cretinism and 15 cases of normal persons. These patients from severely iodine deficient area were diagnosed as neurological endemic cretinism characterized by severe mental retardation with impairment of hearing, speech, neuromotor, etc. to varying degrees. The brain CT showed that there were many and deep depressions in cerebral cortex, especially in frontal and parietal lobes of some cretins, the lateral ventricle system was dilated, particularly in posterior part of it, and the interhemisphere fissure, lateral fissure and subarachnoid cisterns were also expanded. The CT value of cortex was higher and white matter was lower than that of normal persons. In some severe cases, the two hemispheres of brain were not the same in size. These findings above indicated that these endemic cretins had a severe retardation of brain development including ...

383

A fuel treatment reduces potential fire severity and increases suppression efficiency in a Sierran mixed conifer forest  

Science.gov (United States)

Fuel treatments are being widely implemented on public and private lands across the western U.S. While scientists and managers have an understanding of how ... ...

384

A combination of transposable elements and magnetic cell sorting provides a very efficient transgenesis system for chicken primary erythroid progenitors  

UK PubMed Central (United Kingdom)

BackgroundStable transgenesis is an undeniable key to understanding any genetic system. Retrovirus-based insertional strategies, which feature several technical challenges when they...Full Text Available

385

A Substructure Combination Strategy to Create Potent and Selective Transthyretin Kinetic Stabilizers that Prevent Amyloidogenesis and Cytotoxicity  

UK PubMed Central (United Kingdom)

Transthyretin aggregation-associated proteotoxicity appears to cause several human amyloid diseases. Rate-limiting tetramer dissociation and monomer misfolding of transthyretin (TTR) occur before...Full Text Available

2010-02-03

386

A Revised/Proposed Nomenclature for the External Anatomical Features of the Bovine Foot  

UK PubMed Central (United Kingdom)

Several widely recognized sources of nomenclature regarding the bovine external digit were reviewed, compared, and utilized in a clinical survey of bovine digital disease. During this process, some...Full Text Available

1988-05-01

387

A Response Regulator That Represses Transcription of Several Virulence Operons in the Group A Streptococcus  

UK PubMed Central (United Kingdom)

A search for homologs of the Bacillus subtilis PhoP response regulator in the group A streptococcus (GAS) genome revealed three good candidates. Inactivation of one of these, recently...Full Text Available

1999-06-01

388

A Position Paper on the Electronic Publication of Nematode Taxonomic Manuscripts  

UK PubMed Central (United Kingdom)

Several nematode species have now attained ‘model organism’ status, yet there remain many niches in basic biological inquiry for which nematodes would be ideal model systems of study....Full Text Available

2006-09-01

389

A Polygenic Hypothesis for Sex Determination in the European Sea Bass Dicentrarchus labrax  

UK PubMed Central (United Kingdom)

Polygenic sex determination, although suspected in several species, is thought to be evolutionarily unstable and has been proven in very few cases. In the European sea bass, temperature is known to...Full Text Available

2007-06-01

390

A Point Mutation in a Domain of Gamma Interferon Receptor 1 Provokes Severe Immunodeficiency  

UK PubMed Central (United Kingdom)

Gamma interferon (IFN-γ) and the cellular responses induced by it are essential for controlling mycobacterial infections. Most patients bearing an IFN-γ receptor ligand-binding chain...Full Text Available

2001-01-01

391

A Case Report of a Patient with Hereditary Hemorrhagic Telangiectasia Treated Successively with Thalidomide and Bevacizumab  

UK PubMed Central (United Kingdom)

Hereditary hemorrhagic telangiectasia is characterized by mucocutaneous and visceral telangiectasia and involves several organs with vascular malformations. It is an autosomal dominant disease and is...Full Text Available

392

Which differential circuit breaker in tomorrows accommodation?; Quel disjoncteur differentiel dans l'habitat de demain?  

Energy Technology Data Exchange (ETDEWEB)

Since several years, several manufacturers of circuit breakers from various countries (South Africa, UK, The Netherlands, USA..) try to impose in accommodations a highly sensitive electronic-type of differential circuit-breaker initially devoted to industrial installations where qualified and experienced professionals are present. This technical paper presents first the principles of the classical electromechanical circuit breakers and of the electronic circuit breaker, and then compares their relative efficiency and level of safety in residential use conditions (grounding schemes, voltage drops, rupture of the neutral conductor, rupture of the phase conductor, overvoltages). (J.S.)

2000-04-01

393

Three-dimensional discrete ordinates radiation transport calculations of neutron fluxes for beginning-of-cycle at several pressure vessel surveillance positions in the high flux isotope reactor  

Energy Technology Data Exchange (ETDEWEB)

The objective of this research was to determine improved thermal, epithermal, and fast fluxes and several responses at mechanical test surveillance location keys 2, 4, 5, and 7 of the pressure vessel of the Oak Ridge National Laboratory High Flux Isotope Reactor (HFIR) for the beginning of the fuel cycle. The purpose of the research was to provide essential flux data in support of radiation embrittlement studies of the pressure vessel shell and beam tubes at some of the important locations.

1993-11-01

394

The behavior of bonded doubler splices for composite sandwich panels  

Science.gov (United States)

The results of an investigation into the behavior of adhesively bonded doubler splices of two composite material sandwich panels are presented. The splices are studied from three approaches: analytical; numerical (finite elements); and experimental. Several parameters that characterize the splice are developed to determine their influence upon joint strength. These parameters are: doubler overlap length; core stiffness; laminate bending stiffness; the size of the gap between the spliced sandwich panels; and room and elevated temperatures. Similarities and contrasts between these splices and the physically similar single and double lap joints are discussed. The results of this investigation suggest several possible approaches to improving the strength of the sandwich splices.

1980-07-01

395

Quasi-landau resonances: analytic treatment of the hydrogenic spectrum in the two-dimensional model and relation to other strong-field problems  

Energy Technology Data Exchange (ETDEWEB)

The two-dimensional WKB model has been the basis for several investigations of the quasi-Landau hydrogenic spectrum. Whereas other authors have used numerical integration, it is shown that the results can be obtained analytically in terms of elliptic integrals. The later are easily generated by even programmable pocket calculators, from which numerical results - which are in good agreement with experiments - are easily obtained. A further advantage of using elliptic integrals is that several strong-field problems can be shown to be special cases of a general potential whose energy and spacing are expressible in terms of them.

1982-11-01

396

Phenomena of Time Resonances Explosions for the Compound-Clot Decays in High-Energy Nuclear Reactions  

CERN Document Server

The phenomenon of time resonances (or explosions) can explain the exponential reduction of the energy, which is accompanied for the certain degree by slight fluctuations under some conditions in the range of the energy strongly overlapped compound-resonances. These resonant explosions correspond to formation of several highly-exited non-exponentially decaying nuclear clots (partial compound nuclei consisting of several small groups of projectile nucleons and targets). This paper is a continuation and expansion of theoretical authors' work, which is a more general self-consistent version of the time-evolution approach in comparison with the traditional Izumo-Araseki time compound-nucleus model.

2009-01-01

397

Neutron radiography at the University of Michigan's Phoenix Memorial Laboratory  

International Nuclear Information System (INIS)

Real-time neutron radiography (RTNR) is rapidly becoming a valuable tool for nondestructive testing and basic research with a wide variety of applications. The Phoenix Memorial Laboratory (PML) at the University of Michigan has developed an RTNR facility and has been using this facility to study several phenomena of interest to researchers in many areas. These phenomena include imaging of the internal fluid flow in gas turbine engine nozzles and coking and debris deposition in several gas turbine nozzles. This paper presents a summary of the technique and facilities involved in these applications.

1990-06-10

398

Laser photoelectron spectroscopy of ions. Progress report, August 1, 1982-July 31, 1983  

Energy Technology Data Exchange (ETDEWEB)

We have undertaken a program which measures the photoelectron spectra of negative-ion beams. This experiment has afforded us direct information about these ions and the corresponding neutral radicals. Several ions and numerous radicals are believed to be crucial intermediates in combustion processes and flame chemistry. We have fabricated a spectrometer which directly measures electron affinities (EA). Knowledge of the EA and gas-phase acidity of a radical has enabled us to deduce several radical heats of formation and bond strengths.

1983-03-01

399

Knowledge base development for SAM training tools  

Energy Technology Data Exchange (ETDEWEB)

Severe accident management can be defined as the use of existing and alternative resources, systems, and actions to prevent or mitigate a core-melt accident in nuclear power plants. TRAIN (Training pRogram for AMP In NPP), developed for training control room staff and the technical group, is introduced in this report. The TRAIN composes of phenomenological knowledge base (KB), accident sequence KB and accident management procedures with AM strategy control diagrams and information needs. This TRAIN might contribute to training them by obtaining phenomenological knowledge of severe accidents, understanding plant vulnerabilities, and solving problems under high stress. 24 refs., 76 figs., 102 tabs. (Author)

2001-03-01

400

Investigation of FP paths during hypothetical severe accident as a result of Small Break LOCA of WWER-1000 reactor type  

International Nuclear Information System (INIS)

Modelling the behaviour of fission product (FP) in a nuclear reactor coolant system (RCS) undergoing a hypothetical severe accident is an important step in the evaluation of radioactive release outside a nuclear power plant. This paper scrutinize Small Break LOCA sequence for WWER1000 reactor in order to investigate the possible paths for release of FP from fuel pallets to the reactor containment. Contemporaneous computer code for simulation of RCS will be use for the analysis. The results from analysis of fuel damage and release of FP trough the break of cold leg are present. (author)

2006-04-01

401

High power evaluation of X-band high power loads  

CERN Document Server

Several types of X-band high power loads developed for several tens of MW range were designed, fabricated and used for high power tests at X-band facility of KEK. Some of them have been used for many years and few units showed possible deterioration of RF performance. Recently revised-design loads were made by CERN and the high power evaluation was performed at KEK. In this paper, the main requirements are recalled, together with the design features. The high power test results are analysed and presented

2010-01-01

402

Dry aerosol resuspension after a hydrogen deflagration in the containment  

International Nuclear Information System (INIS)

During a hypothetical severe incident in a nuclear power plant with core meltdown a large part of radioactive material is present as aerosol particles in the reactor containment. In current severe accident containment codes the potential influences of hydrogen combustions on the behaviour of aerosols are not considered. Among other effects dry resuspension can increase the aerosol concentration in the atmosphere. Already deposited aerosol material can be re-released into the containment atmosphere by atmospheric currents induced by hydrogen deflagrations or by other phenomena like steam explosions. The objective is to assess the possible influence of this dry resuspension effect on the radioactive source term. (author)

2007-09-10

403

Comparing Computer Run Time of Building Simulation Programs  

Energy Technology Data Exchange (ETDEWEB)

This paper presents an approach to comparing computer run time of building simulation programs. The computing run time of a simulation program depends on several key factors, including the calculation algorithm and modeling capabilities of the program, the run period, the simulation time step, the complexity of the energy models, the run control settings, and the software and hardware configurations of the computer that is used to make the simulation runs. To demonstrate the approach, simulation runs are performed for several representative DOE-2.1E and EnergyPlus energy models. The computer run time of these energy models are then compared and analyzed.

2008-07-23

404

Comparative AMS radiocarbon dating of pretreated versus non-pretreated tropical wood samples  

Energy Technology Data Exchange (ETDEWEB)

Several wood samples collected from Dorslandboom, a large iconic African baobab (Adansonia digitata L.) from Namibia, were investigated by AMS radiocarbon dating subsequent to pretreatment and, alternatively, without pretreatment. The comparative statistical evaluation of results showed that there were no significant differences between fraction modern values and radiocarbon dates of the samples analyzed after pretreatment and without pretreatment, respectively. The radiocarbon date of the oldest sample was 993 +- 20 BP. Dating results also revealed that Dorslandboom is a multi-generation tree, with several stems showing different ages.

2010-04-15

405

Climate hazards caused by thawing permafrost? Background information of the Federal Environmental Agency; Klimagefahr durch tauenden Permafrost? UBA-Hintergrundpapier  

Energy Technology Data Exchange (ETDEWEB)

The thawing of permafrost regions is supposed to increase climatic change processes due to the released methane. During the last decades the temperature of permafrost soils has increased by several tenths of degree up to 2 deg C. It is supposed that 10 to 20% of the permafrost regions will thaw during the next 100 years. The southern boundary of the permafrost region will move several hundred kilometers toward the north. Besides the increased risk for the climate system there will also be disadvantageous consequences for the ecosystems. Negative economic consequences are already observed and will be enhanced in the futures with significant cost for the public.

2006-08-15

406

Bone geometry, biomechanics, and mineral content of the distal radius in uremic patients with severe hyperparathyroidism; Valutazione delle proprieta' geometriche, biomeccaniche e osteodensitometriche del radio ultradistale mediante tomografia computerizzata quantitativa periferica nei pazienti uremici affetti da iperparatiroidismo grave  

Energy Technology Data Exchange (ETDEWEB)

Bone integrity and mineral status were studied with a noninvasive method in uremic patients with severe secondary hyperparathyroidism undergoing maintenance hemodialysis. [Italian] Gli autori propongono un metodo non invasivo per studiare la densita' minerale e le caratteristiche geometriche e biomeccaniche dell'osso nei pazienti uremici affetti da iperparatiroidismo secondario grave.

1999-04-01

407

An application of the analysis of variance of measures repeated in an experiment with heavy metals  

International Nuclear Information System (INIS)

A revision of some basic concepts related to the analysis of variance of repeated measures is presented within an ecological context topics such as the types of experiments in which the technique is applicable, the hypotheses of interest, and its preference over other traditional techniques such as regression and conventional analysis of variance, are discussed. As an example, the technique was successfully applied to an experiment carried out at Cienaga Grande de Santa Marta, Colombia, in which the concentration of cadmium #mu#g/g in leaves of the black mangrove Avicennia germinans was measured in several monitoring stations and throughout several sampling intervals representing seasons.

1997-11-01

408

Rainfall effect on single-vehicle crash severities using polychotomous response models.  

Science.gov (United States)

As part of the Wisconsin road weather safety initiative, the objective of this study is to assess the effects of rainfall on the severity of single-vehicle crashes on Wisconsin interstate highways utilizing polychotomous response models. Weather-related factors considered in this study include estimated rainfall intensity for 15 min prior to a crash occurrence, water film depth, temperature, wind speed/direction, stopping sight distance and deficiency of car-following distance at the crash moment. For locations with unknown weather information, data were interpolated using the inverse squared distance method. Non-weather factors such as road geometrics, traffic conditions, collision types, vehicle types, and driver and temporal attributes were also considered. Two types of polychotomous response models were compared: ordinal logistic and sequential logistic regressions. The sequential logistic regression was tested with forward and backward formats. Comparative ...

2009-08-14

409

Contribution of pulmonary emphysema to functional impairment in patients with severe chronic obstructive pulmonary disease. A high-resolution CT study  

International Nuclear Information System (INIS)

The purpose of the paper is to investigate whether high-resolution CT (HRCT) can detect the subjects with massive emphysematous destruction in a group of patients with severe chronic obstructive pulmonary disease (COPD) and therefor be of help in selecting the candidates to surgical lung volume reduction. Have been examined 40 former smokers with severe COPD (FEV_1#<=#40% of the predicted value, with no major improvement after inhalation of bronchodilators). The emphysema extent score was significantly correlated with the hematocrit value and Tiffeneau index (p<2) in all the 40 patients. The severity of bronchial obstruction was the same in bronchitis and dyspnoeic patients. The subject with chronic bronchitis had milder emphysema (mean extent 35% versus 47% in the dyspnoeic subjects) and a higher frequency of bronchial involvement. A decrease in FEV_1 was significantly correlated with emphysema extent (p<1) in ...

1999-01-01

410

Severity of iron deficiency anemia and its relationship to growth and morbidity  

Energy Technology Data Exchange (ETDEWEB)

The relationships between severity of iron deficiency anemia, response to iron treatment, respiratory and gastrointestinal illness and weight changes were assessed before (T1) and after (T2) iron therapy. Seventy-five pre-school children from rural Guatemala received daily oral iron (ferrous sulfate 5 mg/kg/day) for eleven weeks, and were classified into one of three groups: (1) severe iron deficient (Hgb < 9.25 g/dl at T1 and > 1g/dl Hgb response (T2-T1) to Fe Rx; (2) moderately iron deficient (Hgb 9.25 g/dl to 11.5 g/dl and T2-T1 > 1g/dl); (3) normal controls (Hgb > 11.5 g/dl and T2-T1 < 1g/dl). When both severely and moderately anemic children were pooled together, there was a statistical significant difference between the number of days ill with gastrointestinal symptoms of these children and those in the control group. Children with T1 Hgb > 11.5 had more days ill than those classified as ...

1986-03-01

411

Risk assessment of severe accident-induced steam generator tube rupture  

Energy Technology Data Exchange (ETDEWEB)

This report describes the basis, results, and related risk implications of an analysis performed by an ad hoc working group of the U.S. Nuclear Regulatory Commission (NRC) to assess the containment bypass potential attributable to steam generator tube rupture (SGTR) induced by severe accident conditions. The SGTR Severe Accident Working Group, comprised of staff members from the NRC`s Offices of Nuclear Reactor Regulation (NRR) and Nuclear Regulatory Research (RES), undertook the analysis beginning in December 1995 to support a proposed steam generator integrity rule. The work drew upon previous risk and thermal-hydraulic analyses of core damage sequences, with a focus on the Surry plant as a representative example. This analysis yielded new results, however, derived by predicting thermal-hydraulic conditions of selected severe accident scenarios using the SCDAP/RELAP5 computer code, flawed tube failure modeling, and tube ...

1998-03-01

412

Quantitative bone and 67Ga scintigraphy in the differentiation of necrotizing external otitis from severe external otitis  

Energy Technology Data Exchange (ETDEWEB)

Qualitative technetium Tc 99m bone scintigraphy using phosphate compounds and gallium 67 scintigraphy were described as a helpful means in diagnosing necrotizing external otitis (NEO). They were, however, claimed to be nonspecific. Quantitative Tc 99m methylene diphosphonate bone scintigraphy and gallium 67 scintigraphy were performed in eight patients with NEO and in 20 patients with severe external otitis, in order to prove usefulness of scintigraphy in the diagnosis of NEO. Ratios of lesion to nonlesion for bone scintigraphy were 1.67 {plus minus} 0.16 in patients with NEO and 1.08 {plus minus} 0.09 in patients with severe external otitis, and for gallium 67 scintigraphy they were 1.35 {plus minus} 0.24 in NEO patients and 1.05 {plus minus} 0.03 in patients with severe external otitis. There was no difference in uptake between diabetic patients with severe external otitis and nondiabetic patients. ...

1991-06-01

413

Quantitative bone and 67Ga scintigraphy in the differentiation of necrotizing external otitis from severe external otitis  

International Nuclear Information System (INIS)

Qualitative technetium Tc 99m bone scintigraphy using phosphate compounds and gallium 67 scintigraphy were described as a helpful means in diagnosing necrotizing external otitis (NEO). They were, however, claimed to be nonspecific. Quantitative Tc 99m methylene diphosphonate bone scintigraphy and gallium 67 scintigraphy were performed in eight patients with NEO and in 20 patients with severe external otitis, in order to prove usefulness of scintigraphy in the diagnosis of NEO. Ratios of lesion to nonlesion for bone scintigraphy were 1.67 #+-# 0.16 in patients with NEO and 1.08 #+-# 0.09 in patients with severe external otitis, and for gallium 67 scintigraphy they were 1.35 #+-# 0.24 in NEO patients and 1.05 #+-# 0.03 in patients with severe external otitis. There was no difference in uptake between diabetic patients with severe external otitis and nondiabetic patients. The scintigraphic studies were ...

414

[Computed tomography in gunshot trauma. I. Ballistics elements and the mechanisms of the lesions].  

Science.gov (United States)

The knowledge of wound ballistics and of wounding mechanisms is mandatory for the radiologist to interpret the CT findings of gunshot wounds. The severity of a bullet wound depends on the characteristics of the tissue it goes through, i.e., tissue elasticity, density, thickness of the wounded body part, the type of tissue, its specific gravity, internal cohesiveness and anatomical relationships, as well as on missile characteristics, i.e., mass, shape, fragmentation and deformation. Bullet velocity is certainly a major factor in wounding, but it is only one factor. Two major wounding mechanisms exist the crushing of the bullet-struck tissue (forming the permanent cavity) and radial stretching (forming a temporary cavity). Bullet "yaw" is defined as the angle between the long axis of the bullet and its flight path. The yaw is directly proportional to tissue crushing and stretching: the wider the yaw, the most severe tissue crushing and ...

1995-04-01

415

Use of x-ray imaging for evaluation of superconducting ceramics fabricated by PIT method  

Energy Technology Data Exchange (ETDEWEB)

High-spatial-resolution microfocus-based X-ray imaging technology, both real-time and film, has been used to study the thickness variation that occurs in the oxide core of silver-sheathed BSCCO ribbons produced by the powder-in-tube method. This thickness variation (also called ``sausaging``) occurs during incremental rolling and degrades the critical current densities of the ribbons. Using X-ray image data the authors determined the onset and severity of sausaging. Onset occurred at a ribbon thickness of 203 {micro}m, and the severity increased with subsequent rolling reductions. Scanning electron microscopy was used to confirm the X-ray image data. X-ray imaging provides several advantages over more traditional methods for characterizing the superconductors such as optical or scanning electron microscopy. The X-ray imaging provides nondestructive information about the entire width of the ribbon, with far greater speed, ...

1993-08-01

416

Use of a fuzzy decision-making method in evaluating severe accident management strategies  

Energy Technology Data Exchange (ETDEWEB)

In developing severe accident management strategies, an engineering decision would be made based on the available data and information that are vague, imprecise and uncertain by nature. These sorts of vagueness and uncertainty are due to lack of knowledge for the severe accident sequences of interest. The fuzzy set theory offers a possibility of handling these sorts of data and information. In this paper, the possibility to apply the decision-making method based on fuzzy set theory to the evaluation of the accident management strategies at a nuclear power plant is scrutinized. The fuzzy decision-making method uses linguistic variables and fuzzy numbers to represent the decision-maker's subjective assessments for the decision alternatives according to the decision criteria. The fuzzy mean operator is used to aggregate the decision-maker's subjective assessments, while the total integral value method is used to rank the decision ...

2002-09-01

417

The use of noninvasive mechanical ventilation in COPD with severe hypercapnic acidosis  

British Library Electronic Table of Contents (United Kingdom)

SummaryStudy Objectives: To compare the effect of noninvasive mechanical ventilation (NIV) in severely acidotic with mildly acidotic patients with acute hypercapnic chronic obstructive lung disease (COPD).Design: Comparison of NIV in consecutively enrolled patients with acute hypercapnic COPD with mild (pH 7.25-7.35) or severe (pHPaCO2, duration of NIV treatment, length of stay in hospital and survival.Results (meadian (IQR)): Twenty-nine patients had 36 episodes of acute hypercapnic respiratory failure: Seventeen with pHPaCO2 improve (12 (6-34) vs 12 (4-28)h, respectively, Formula Not Shown ), with similar duration of NIV treatment (60 (35-96) vs 68 (36-48)h, respectively, Formula Not Shown ) and hospital length of stay (8 (7-18) vs 9 (5-17) days, respectively, Formula Not Shown ). Overal...

2007-01-01

418

The effects of short term and chronic exposure to tritiated drinking water on pre- and postnatal brain development  

International Nuclear Information System (INIS)

Ingestion of HTO during oocyte maturation and continued during pre-implantation time was found to depress decidual response. At birth these offspring also showed a decrease in brain cell number. When HTO was given during pregnancy only, the offspring at birth showed a similar deficit in brain cell number. Even so, we could not demonstrate a gross deficit in oocyte maturation when HTO was ingested during sexual maturity only; however, when further continued during pregnancy, the measured newborn parameters were most severely affected. In this group, cell-multiplication in the cerebrum was severely decreased, protein synthesis was decreased, and somatic growth was also highly significantly decreased. These experiments indicate that even a short-term exposure to HTO during early pregnancy (pre-implantation) alters normal development to such an extent that it is still observable at birth. During embryonic development, HTO affected the rate of ...

1980-11-26

419

Severe rectal injury following radiation for prostatic cancer  

Energy Technology Data Exchange (ETDEWEB)

Between 1970 and 1981, 348 patients underwent definitive irradiation. Of these patients 6 (1.7 per cent) sustained severe rectal injury as manifest by major rectal bleeding, rectal stricture, rectal mucosal slough and rectal ulceration. Severe rectal injury was observed in 0 of 13 patients (0 per cent) treated with 125iodine, 3 of 329 (1 per cent) treated with 6,400 to 6,800 rad external irradiation, 2 of 39 (5 per cent) treated with 7,000 to 7,300 rad external irradiation, and 1 of 7 (14 per cent) treated with 198gold and external irradiation. The impact of radiation dose, radiation therapy technique and surgical trauma was assessed. Rectal injury was managed by supportive measures in 2 patients and by diverting colostomy in 3 with benefit. One patient underwent abdominoperineal resection. A small bowel fistula and an intra-abdominal abscess developed, and the patient died.

1984-04-01

420

SCDAP/RELAP5/MOD 3.1 code manual: Interface theory. Volume 1  

Energy Technology Data Exchange (ETDEWEB)

The SCDAP/RELAP5 code has been developed for best estimate transient simulation of light water reactor coolant systems during a severe accident. The code models the coupled behavior of the reactor coolant system, core, fission product released during a severe accident transient as well as large and small break loss of coolant accidents, operational transients such as anticipated transient without SCRAM, loss of off-site power, loss of feedwater, and loss of flow. A generic modeling approach is used that permits as much of a particular system to be modeled as necessary. Control system and secondary system components are included to permit modeling of plant controls, turbines, condensers, and secondary feedwater conditioning systems. This volume describes the organization and manner of the interface between severe accident models which are resident in the SCDAP portion of the code and hydrodynamic models which are resident in ...

1995-06-01

421

Production of radiopharmaceuticals for positron emission tomography via laboratory robotics  

International Nuclear Information System (INIS)

The production of radiopharmaceuticals used in positron emission tomography (PET) can require large amounts of activity at the start of synthesis in order to yield sufficient labeled material for clinical studies. Several investigators have developed remote and automated systems for the routine production of PET radiopharmaceuticals in order to reduce radiation exposure to personnel. Such devices, however, suffer from limited flexibility and can be relatively complicated in design. These systems are also limited to the production of a single or a few closely related compounds. Furthermore, changes in chemistry would require considerable modifications in hardware and/or software in order to bring the device back into operation. To circumvent the above limitations associated with the remote production of PET radiopharmaceuticals, the authors have investigated the use of laboratory robotics as a flexible alternative to the synthesis of several ...

1987-11-15

422

Potential for containment leak paths through electrical penetration assemblies under severe accident conditions  

International Nuclear Information System (INIS)

The leakage behavior of containments beyond design conditions and knowledge of failure modes is required for evaluation of mitigation strategies for severe accidents, risk studies, emergency preparedness planning, and siting. These studies are directed towards assessing the risk and consequences of severe accidents. An accident sequence analysis conducted on a Boiling Water Reactor (BWR), Mark I (MK I), indicated very high temperatures in the dry-well region, which is the location of the majority of electrical penetration assemblies. Because of the high temperatures, it was postulated in the ORNL study that the sealants would fail and all the electrical penetration assemblies would leak before structural failure would occur. Since other containments had similar electrical penetration assemblies, it was concluded that all containments would experience the same type of failure. The results of this study, however, show that this conclusion does ...

423

Management of pitfalls for the successful clinical use of hypothermia treatment.  

Science.gov (United States)

Therapeutic hypothermia is a promising method for controlling intracranial pressure (ICP) in severely brain-injured patients. However, clinical data regarding the effect of brain hypothermia on overall outcome of these patients is limited. This may be because there are specific pitfalls associated with the clinical management of induced hypothermia in patients with severe traumatic brain injury (TBI). These pitfalls may be avoided by preventing specific risk factors when cooling is induced and with rewarming. However, these risk factors have not been well systematically discussed in the literature. In this paper, three categories of clinical issues regarding the management of brain hypothermia are discussed: (1) stress-induced secondary brain injury mechanisms; (2) technical aspects of intensive care unit (ICU) cooling management; and (3) rewarming rates and methods. For patients with a Glasgow Coma Scale (GCS) score of less than 8, management ...

2009-03-01

424

Magical Thinking in Somatoform Disorders: An Exploratory Study among Patients with Suspected Allergies.  

Science.gov (United States)

Background: In order to reconceptualize somatoform disorders (SFDs), the psychological characteristics of SFD patients are increasingly investigated. The cognitive style of magical thinking (MT) has not been studied so far in patients with SFDs. Sampling and Methods: In a cross-sectional study, 201 allergy workup patients were interviewed using the Structured Clinical Interview for DSM-IV; they answered a set of self-report questionnaires including the Schizotypal Personality Questionnaire subscale for MT and the Patient Health Questionnaire (PHQ). The expression of MT was explored in 61 patients with SFDs compared to 140 patients without SFDs. Results: Patients with SFDs reached higher scores of MT, also when controlled for gender, depression, and anxiety. In particular, they stated more frequently that they were believers in telepathy (64 vs. 44%) and clairvoyance (43 vs. 16%). MT correlated only weakly with somatization/somatic symptom severity, depression, and ...

2011-06-09

425

Emergency core cooling device  

International Nuclear Information System (INIS)

Purpose: To effectively cool the reactor core in a steam atmosphere by upwardly directing several of spray nozzles attached to a ring header thereby increasing the flying distance of the spray. Constitution: Ring headers in two upper and lower stages are disposed above the outer circumference of a reactor core and each of the ring headers is mounted with spray nozzles. Among the spray nozzles, at least several nozzles mounted to the ring header at the lower stage are directed such that the center axis for each of the nozzle is raised above the horizontal axis and other several nozzles are mounted with the nozzle center axis directed downwardly from the horizontal axis. Accordingly, even if collapsing phenomenon occurs in the jetting stream due to the condensation in the steams that forms the operation atmosphere of the reactor core spray cooling device, a sufficient amount of emergency cooling water can be distributed over ...

1983-03-09

426

Characteristic findings of pediatric inpatients with pandemic (H1N1) 2009 virus infection among severe and nonsevere illnesses  

British Library Electronic Table of Contents (United Kingdom)

We analyzed the clinical features of inpatients at a Japanese pediatric department who were infected with pandemic (H1N1) 2009 virus. Study participants included 46 children hospitalized from July 2009 to January 2010. Infection with the virus was confirmed using real-time reverse transcriptase polymerase chain reaction (RT-PCR). The epidemic month was October 2009; 34 patients were boys, and median age was 7?years. Pandemic influenza-associated respiratory diseases included pneumonia (n?=?42), bronchitis (n?=?3), and pharyngitis (n?=?1). The median time from onset to admission was 3?days. Children were divided into those with severe (n?=?32) versus nonsevere illnesses (n?=?14) according to Japanese guidelines. Significant features in the severe group were younger age, previous asthmatic a...

2011-01-01

427

Analytical study on analysis methods of several random variables for seismic nonlinear responses of reactor buildings  

International Nuclear Information System (INIS)

In the case wherein nonlinear seismic response analyses are carried out, the response values vary due to the variations in materials and modeling. In this paper, nonlinear analyses of several random variables are carried out using: i. a conventional method; ii. a two-point estimation method (i. and ii. are simplified methods); and iii. Monte Carlo simulation (detailed method) to examine the variability of the response in the excessive nonlinear range for seismic responses of shear walls. The analyses are performed to a PWR-3 loop type reactor building which is one of the most typical reactor buildings in Japan. The variations are considered in specified compressive strength of concrete, concrete damping factor, shear wave velocity of soil and shapes of shear stress-strain relation curves of shear walls. As the results by the two simplified methods closely matched the Monte Carlo simulation results, the appropriateness for applying the simplified methods to ...

1993-08-15

428

AIDE: internal dosimetry software.  

Science.gov (United States)

AIDE (Activity and Internal Dose Estimates) is a software for calculating activities in compartments and committed doses due to occupational exposures, and for performing intake and dose estimates using bioassay data. It has been continuously developed and tested for more than 20 years. Its calculation core has been applied in several situations, like performing all dose estimates due to (137)Cs intakes, which occurred during the Goiania accident in 1987; performing quality assurance of the ICRP Task Group on Dose Calculations regarding calculations of activities in compartments and generation of dose coefficients for adults due to intakes by inhalation, ingestion and injection of several radionuclides; and producing the tables of activities in compartments and dose coefficients using the NCRP Wound Model for the NCRP report. It provides several capabilities like performing calculations using modified Human Respiratory ...

2008-03-12

429

A preliminary study of a cartoon measure for children's reactions to chronic trauma.  

Science.gov (United States)

Preliminary psychometric properties of a new instrument, Angie/Andy Cartoon Trauma Scales (ACTS), are presented. Angie/Andy features a cartoon-based methodology, measuring trauma-related sequelae of prolonged, repeated abuse. A sample of 208 children comprised intrafamilial trauma, extrafamilial trauma, combined trauma, and nontrauma groups. Angie/Andy demonstrated high internal consistency, with coefficient alphas from 0.70 to 0.95. The three trauma groups scored significantly higher than the nontrauma group on all scales (p's < 0.0001). Generally, the most severely traumatized group scored significantly higher than the less severely traumatized groups. The number of types of violence exposures correlated with Angie/Andy scores from 0.55 to 0.74. The frequency and severity of trauma exposure correlated with Angie/Andy scores from 0.44 to 0.56. The Angie/Andy parent version correlated with a standardized parent scale ...

2000-08-01

430

A Demonstration of Level-2 Risk Uncertainty Decreasing Efforts for a Phenomenological Accident Progression Prediction  

International Nuclear Information System (INIS)

An uncertainty decrease is an very important issue for enhancing risk-informed (RI) activities worldwide. Especially, a relatively large uncertainty in a level-2 (L2) PSA risk compared with level-1 internal PSA risk has been a bottleneck problem in the RI application to the extent of a severe accident management. According to the ASME PRA standard in which sources of an uncertainty to capture a category-II RI (= Option 2) capability are listed, an uncertainty analysis which identifies the key sources of an uncertainty and includes sensitivity studies for dominant contributors to LERF (Large Early Release Frequency) needs to be provided. To solve these problems, USNRC have developed the 'SPAR-LERF' model related to the L2 RI application and 'L2 uncertainty assessment and improvement' work is being taken as a main PSA2 topic of the SARNET (Severe Accident Research Network of Excellence) program in Europe by OECD/NEA. Domestically, a mid/long-term ...

2007-05-10

431

Web-based tools for modelling and analysis of multivariate data: California ozone pollution activity  

British Library Electronic Table of Contents (United Kingdom)

This article presents a hands-on web-based activity motivated by the relation between human health and ozone pollution in California. This case study is based on multivariate data collected monthly at 20 locations in California between 1980 and 2006. Several strategies and tools for data interrogation and exploratory data analysis, model fitting and statistical inference on these data are presented. All components of this case study (data, tools, activity) are freely available online at: http://wiki.stat.ucla.edu/socr/index.php/SOCR_MotionCharts_CAOzoneData. Several types of exploratory (motion charts, box-and-whisker plots, spider charts) and quantitative (inference, regression, analysis of variance (ANOVA)) data analyses tools are demonstrated. Two specific human health related questions...

2011-01-01

432

Tribopolymerization as an anti-wear mechanism. Progress report  

Energy Technology Data Exchange (ETDEWEB)

During the first phase of this project, significant progress was made in several of the connected issues that make up the objectives of this grant. The central thrust or theme of this work under the DOE/ERIP grant is to carry out prototype testing of the concept of tribopolymerization as a novel mechanism of boundary lubrication--under more severe, high-load, high-speed conditions that are most likely to exist in field applications. The authors see this as an important step in attracting industries to license and market the results of this new technology. In addition, they have began to explore other potential, energy-saving applications of the concept of tribopolymerization. These exploratory studies are quite promising; they are likely to open new doors in industrial applications. To carry out the experimental part of this program, a new device has been built. Highlights of these and other developments are given.

1995-12-01

433

Transcranial magnetic stimulation in adolescent depression  

British Library Electronic Table of Contents (United Kingdom)

Objective: There are few safe and effective biological treatments for major depression in adolescents. We aimed to report the use of repetitive transcranial magnetic stimulation (rTMS) as a treatment for adolescents with this condition. Methods: The first two subjects in a double-blind, sham-controlled trial of rTMS that is evaluating the efficacy and safety of rTMS in depressed adolescents are described. Clinical response was assessed at baseline and at the end of each week. The following scales were used: Montgomery-Asberg Depression Rating Scale, Clinical Global Impression-Severity Scale, Beck Depression Inventory and Centre for Epidemiological Studies - Depression - Child Scale. A battery of cognitive tests was also used at several intervals to measure potential change in neuropsycholo...

2006-01-01

434

Third generation nuclear new builds: Opportunities and challenges  

International Nuclear Information System (INIS)

Full text: The nuclear renaissance, anticipated by AREVA in the beginning of the century is now happening in several countries around the world. The fundamentals being the increasing demand of energy, the volatility of fossil fuel prices, the awareness of climate change threat connected with the extensive use of fossil fuels. The EPRTM reactor present significant improvements compared to previous generation reactors enabling to reach an outstanding safety level (redundancy of safety systems, airplane crash resistance), to improve the economics (extended plant lifetime, flexibility and availability during operation and, increased efficiency and fuel utilization) while limiting the impact on workers and the environment. Several countries have been implementing the transition to third generation reactors. The presentation will analyze different examples in order to draw the lessons learned from this first wave and to set-up the criteria for a ...

2009-10-12

435

The status of the alpha-project  

International Nuclear Information System (INIS)

A review of the ALPHA project is presented, including a summary of progress and current status. The project comprises the experimental and analytical investigation of the long-term decay heat removal phenomena from the containment of the next generation of ''passive'' Advanced Light Water Reactors. The effects of aerosols that may result from hypothetical severe accidents are also considered. The construction of the major ALPHA experimental facilities, PANDA, LINX-2 and AIDA, has been completed. First steady-state tests have been performed on PANDA. The other facilities are now in their commissioning phases. Scaling studies have guided the design of the experimental facilities. Several small-scale experimental and studies have already produced valuable results which can be used to direct the experimental work, as well as the design of the passive ALWRs. (author). 23 refs, 6 figs.

1996-04-01

436

The expression profile of TLR9 mRNA and CpG ODNs immunostimulatory actions in the teleost gilthead seabream points to a major role of lymphocytes  

British Library Electronic Table of Contents (United Kingdom)

Abstract. The potential effects of synthetic unmethylated oligodeoxynucleotides (ODN) containing CpG motifs, mimicking bacterial DNA, has never been evaluated on the immune response in the teleost fish gilthead seabream (Sparus aurata), the most important fish species in Mediterranean aquaculture. First, binding and competition studies have demonstrated that binding is saturated and promiscuous, suggesting the participation of several receptors. Moreover, leucocyte cytotoxic (NCC) activity, production of ROIs (reactive oxygen intermediates), and expression of immune-relevant genes was greatly primed by ODNs. Focusing on the mechanism, the TLR9 gene is widely distributed in seabream tissues and differently regulated in vitro by several stimuli. Moreover, and for the first time in fish, TLR9...

2008-01-01

437

The contribution of lower vertebrate animal models in human reproduction research  

British Library Electronic Table of Contents (United Kingdom)

Many advances have been carried out on the estrogens, GnRH and endocannabinoid system that have impact in the reproductive field. Indeed, estrogens, the generally accepted female hormones, have performed an unsuspected role in male sexual functions thanks to studies on non-mammalian vertebrates. Similarly, these animal models have provided important contributions to the identification of several GnRH ligand and receptor variants and their possible involvement in sexual behavior and gonadal function regulation. Moreover, the use of non-mammalian animal models has contributed to a better comprehension about the endocannabinoid system action in several mammalian reproductive events. We wish to highlight here how non-mammalian vertebrate animal model research contributes to advancements with i...

2011-01-01

438

Symmetric deformation in A approximately 100 odd and odd-odd nuclei and its influence on fission product #beta#-decay rates  

International Nuclear Information System (INIS)

Nuclear shape changes can bring about rapid changes in nuclear properties. That such vibrational #-># symmetric rotor #-># asymmetric nucleus changes may be present in the A approximately 100 region is suggested by rapid, low-energy level density changes and unexpected #beta#-decay rate changes in several series of odd-odd and odd-mass fisions product nuclei. In order to define the nature of these nuclei we have performed measurements on a series of nuclei using JOSEF and Lohengrin mass separators, fast-chemistry, and n-capture #gamma#-ray techniques. Here we summarize the several features we find.

1983-10-24

439

Study on probability of failure for RPV nozzle region under severe accident conditions  

Energy Technology Data Exchange (ETDEWEB)

Most of previous study for creep rupture of RPV lower head under severe accident condition, have been focused on global failure of RPV lower head. In contract, the local failure of the RPV nozzle region has not been studied in detail. The existence and features of nozzle failure in LAVA-ICI specimen of KAERI and LHF-4 specimen of Sandia National Lab., are observed. It is confirmed that the nozzle failure of LHF-4 specimen is due to the hoop stress in the RPV. The tensile tests in various temperatures and the creep rupture tests in various temperatures and stresses, are accomplished. The finite element analysis for LAVA-ICI experiment was confirmed, and the stress and deformation analysis results are used in LAVA-ICI experiment. 17 refs., 34 figs., 3 tabs. (Author)

2001-04-01

440

Steatohepatite non alcoolique chez une adolescente obese : une biopsie hepatique discutable  

British Library Electronic Table of Contents (United Kingdom)

The growing epidemic of juvenile obesity has prompted pediatricians to investigate obesity-related conditions in obese teenagers. We report a clinical case of severe hepatic fibrosis in an adolescent with severe and recent obesity. Because of elevated serum aminotransferase levels, abnormal hepatic ultrasonography and insulin resistance (impaired glucose tolerance), we suspected nonalcoholic steatohepatitis (NASH). Disease activity and fibrosis were confirmed on liver biopsy. Considering the risk of progression toward cirrhosis and its complications, and the pathological liver lesions, we started long-term medical monitoring and drug therapy to control weight loss. At present, although biopsy is the only validated way to establish the diagnosis of NASH, there is no consensus on its indicat...

2011-01-01

441

Some sensitivities during a LWR severe core-damage sequence  

International Nuclear Information System (INIS)

Stable boiloff of core water during a severe LWR accident, that is, boiloff driven only by the decay power generated below the water level, is tractable analytically and is relatively insensitive to axial power distribution. As might be expected, calculated accident event times are sensitive to the fidelity of the decay power model. During later stages of boiloff, heat transfer or transport of energy from above the water level to the residual water can result in an unstable condition during which the boiloff rate increases greatly. The unstable boiloff phenomenon illustrates the highly nonlinear influence of core heat transfer during meltdown and emphasizes the great accuracy requirements which attend the modeling of the accident during periods of enhanced heat transfer when significant zirconium oxidation is possible.

1981-12-04

442

Sodium-driven motor of the polar flagellum in marine bacteria Vibrio  

British Library Electronic Table of Contents (United Kingdom)

The Na+-driven bacterial flagellar motor is a molecular machine powered by an electrochemical potential gradient of sodium ions across the cytoplasmic membrane. The marine bacterium Vibrio alginolyticus has a single polar flagellum that enables it to swim in liquid. The flagellar motor contains a basal body and a stator complexes, which are composed of several proteins. PomA, PomB, MotX, and MotY are thought to be essential components of the stator that are required to generate the torque of the rotation. Several mutations have been investigated to understand the characteristics and function of the ion channel in the stator and the mechanism of its assembly around the rotor to complete the motor. In this review, we summarize recent results of the Na+-driven motor in the polar flagellum of ...

2011-01-01

443

Simultaneous ozonation kinetics of phenolic acids present in wastewaters  

Energy Technology Data Exchange (ETDEWEB)

Among the several chemical processes conducted for the removal of organic matter present in wastewaters coming from some agro-industrial plants (wine distilleries, olive oil mills, etc), the oxidation by ozone has shown a great effectiveness in the destruction of specially refractory pollutants: it is demonstrated that the biodegradability of those wastewaters increases aflcer an ozonation pretreatment. Their great pollutant character is imputed to the presence of some organic compounds, like phenols and polyphenols, which are toxic and inhibit the latter biological treatments. In this research, a competitive kinetic procedure reported by Clurol and Nekouinaini is applied to determine the degradation rate constants by ozone of several phenolic acids which are present in the wastewaters from the olive oil obtaining process. The resulting kinetic expressions for the ozonation reactions are useful for the successful design and operation of ozone ...

1996-12-31

444

Simulation study of feedback systems based on a two-tap FIR filter. Under beam-beam collisions  

Energy Technology Data Exchange (ETDEWEB)

The performance of bunch-feedback systems based on two-tap FIR filters is discussed, particularly for transverse cases. Since they are the simplest type of FIR digital filters, the two-tap FIR filters should be suited to systems that require a very fast processing speed. However, in these feedback systems, a bunch must turn along a ring several times from the position-measurement to feedback kicking. Within these turns, irregular phase-jumps in the betatron motion can occur, due to several causes, such as the wake forces and beam-beam force. The discussion given in this paper is focussed on the effect of beam-beam collisions on these feedback systems. Based on linear theory and simulation studies, it has been found that these feedback systems can work with good performance, even under the influence of a strong beam-beam force. (author)

1998-04-01

445

Simple isolation of polonium-210 from silver  

Energy Technology Data Exchange (ETDEWEB)

Over the last several years considerable concern has been expressed regarding the potential detrimental effects of radon and radon progeny on our health. The complex nature of the radon decay scheme, which involves the emission of a variety of radiations including several [alpha] particles, [beta] particles, and [gamma]-rays, does not lend itself to clear delineation of the biological effects of the [alpha] particles alone. Polonium-210, the terminal radionuclide of the radon decay series, is useful for this purpose because it has a relatively long shelf-life ([tau][sub 1/2] = 138 d), and it only emits a single 5.3 MeV [alpha] particle in its decay to stable [sup 206]Pb. Accordingly, it has been used extensively in radiobiological studies with incorporated radionuclides. The radionuclide [sup 210]Po is produced in a reactor from [sup 209]Bi. (Author).

1994-05-01

446

Short-term oral administration of several manganese compounds in mice: Physiological and behavioral alterations caused by different forms of manganese  

Energy Technology Data Exchange (ETDEWEB)

In Kanazawa, Japan, air pollution from a Mn treatment factory was found to affect local junior high school students, who showed reduced respiratory function relative to their exposure to Mn. The use of Mn as an antiknock ingredient in automobile fuels has recently been introduced, placing the general population at risk of chronic low-level exposure. There are few animal studies on the effects of compounds other than manganese chloride (MnCl{sub 2}). In the case of environmental pollution by Mn, the differing physiological effects of the various chemical forms of Mn must be considered. The present study therefore examined the differences in the effects of several Mn compounds on the physiology and behavior of mice by short-term oral administration.

1991-06-01

447

Severe paraquat poisoning: clinical and radiological findings in a survivor  

International Nuclear Information System (INIS)

Paraquat is a nonselective contact herbicide of great toxicological importance, being associated with high mortality rates, mainly due to respiratory failure. We report the case of a 22-year-old male admitted to the emergency room with a sore throat, dysphagia, hemoptysis, and retrosternal pain after the ingestion of 50 mL of a paraquat solution, four days prior to admission. Chest CT scans revealed pulmonary opacities, pneumomediastinum, pneumothorax, and subcutaneous emphysema. The patient was submitted to two cycles of immunosuppressive therapy with cyclophosphamide, methylprednisolone, and dexamethasone. The pulmonary gas exchange parameters gradually improved, and the patient was discharged four weeks later. The clinical and tomographic follow-up evaluations performed at four months after discharge showed that there had been further clinical improvement. We also present a brief review of the literature, as well as a discussion of the therapeutic algorithm for ...

448

Severe paraquat poisoning: clinical and radiological findings in a survivor  

Energy Technology Data Exchange (ETDEWEB)

Paraquat is a nonselective contact herbicide of great toxicological importance, being associated with high mortality rates, mainly due to respiratory failure. We report the case of a 22-year-old male admitted to the emergency room with a sore throat, dysphagia, hemoptysis, and retrosternal pain after the ingestion of 50 mL of a paraquat solution, four days prior to admission. Chest CT scans revealed pulmonary opacities, pneumomediastinum, pneumothorax, and subcutaneous emphysema. The patient was submitted to two cycles of immunosuppressive therapy with cyclophosphamide, methylprednisolone, and dexamethasone. The pulmonary gas exchange parameters gradually improved, and the patient was discharged four weeks later. The clinical and tomographic follow-up evaluations performed at four months after discharge showed that there had been further clinical improvement. We also present a brief review of the literature, as well as a discussion of the therapeutic algorithm for ...

2010-07-01

449

Scuffing behavior of gray iron and 1080 steel in reciprocating and rotational sliding  

British Library Electronic Table of Contents (United Kingdom)

Scuffing damage is catastrophic and typically not self-healing. It severely affects the life and reliability of engineering components, such as cams, roller bearings, piston rings, cylinder bores and gears. Gray iron and 1080 steel are important materials for these extremely demanding structural components. There have been several scuffing studies done in the past with various types of steel and cast iron. However, in these studies there was no attempt to compare the scuffing resistance of cast iron and steel materials with similar matrices. In the present study, scuffing tests were performed with the matrices of gray iron and 1080 steel being fully pearlitic. This allows for a direct evaluation of the effect of the graphite flakes on scuffing resistance. The scuffing behavior for these ma...

2011-01-01

450

Response of native ungulates to drought in semi arid Kenyan rangeland  

British Library Electronic Table of Contents (United Kingdom)

Abstract The distribution and abundance of native ungulates were measured on commercially managed, semi arid rangeland in central Kenya over a 3 year period that encompassed severe drought and above average rainfall. Native ungulate biomass density averaged 5282 kg km 2 over the study and was dominated by elephant (Loxodonta africana), impala (Aepyceros melampus) and dik dik (Madoqua kirkii). Biomass density of domestic cattle (Bos taurus) averaged 2280 kg km 2 during the study. Responses of native ungulates to severe drought were variable. Impala densities were similar to or greater than densities for similar habitat in protected areas, and varied from 12 to 16 km 2 during and following the drought to 24 29 km 2 following above average rainfall. Dik dik densities were also greater than de...

2010-01-01

451

Recycler model magnet test on temperature compensation for strontium ferrite  

Energy Technology Data Exchange (ETDEWEB)

The Recycler ring magnet will be made of Strontium ferrite permanent magnets. A strontium ferrite permanent magnet without compensation has a temperature coefficient of -0.2 % in dB/dT. To compensate this effect, we are utilizing 30 % Ni 70 % Fe alloy, a temperature compensation ferromagnetic material with a low Curie point. To search for optimum commercially available material and optimum condition, we made a couple of simple model magnets, and tested with several different compensating material. The test results are reported and its optimal conditions are shown. Several different configurations were tested including a possible 2 kG magnet configuration.

1995-10-01

452

Recent developments in the CONTAIN-LMR code  

International Nuclear Information System (INIS)

Through an international collaborative effort, a special version of the CONTAIN code is being developed for integrated mechanistic analysis of the conditions in liquid metal reactor (LMR) containments during severe accidents. The capabilities of the most recent code version, CONTAIN LMR/1B-Mod.1, are discussed. These include new models for the treatment of two condensables, sodium condensation on aerosols, chemical reactions, hygroscopic aerosols, and concrete outgassing. This code version also incorporates all of the previously released LMR model enhancements. The results of an integral demonstration calculation of a sever core-melt accident scenario are given to illustrate the features of this code version. 11 refs., 7 figs., 1 tab.

1990-08-12

453

Prognostic value of plasma B-type natriuretic peptide in patients with severe cardiotoxic drug poisoning  

British Library Electronic Table of Contents (United Kingdom)

Background/Objectives: Cardiotoxic drug poisoning can lead to severe cardiac shock (CS) and death. B-type natriuretic peptide (BNP) is a well-established diagnostic and prognostic marker in heart failure but has never been assessed in patients with cardiotoxic drug poisoning. The aim of the study was to determine whether BNP could be useful for early stratification of patients admitted to intensive care unit. Methods: 30 consecutive patients experiencing shock and cardiotoxic drug exposure were enrolled in a prospective monocentric study and underwent at least two BNP measurements within the first 24 h after admission. Results: While BNP values on admission were poorly informative, subsequent BNP measurements (11 +- 6 h after admission) were significantly increased in patients with CS comp...

2011-01-01

454

Production of {sup 62}Zn, {sup 65}Zn and {sup 203}Pb radioisotopes for studying the transport of zinc and lead in plants  

Energy Technology Data Exchange (ETDEWEB)

In the Carpathian Basin, significant percentage of watershed area and floodplains of rivers are utilised agriculturally. Several potential sources of poisonous metal pollution have been identified in these areas. Because of spills from some of them a few severe accidents have happened especially in the watershed area of Tisza River during the last decades. The motivation of our present work was to produce {sup 62,65}Zn and {sup 203}Pb radioisotopes because they can be used especially as tracers for studying the kinetics of uptake, transport and accumulation of zinc and lead by plants under different circumstances. (orig.)

2004-07-01

455

Production of "6"2Zn, "6"5Zn and "2"0"3Pb radioisotopes for studying the transport of zinc and lead in plants  

International Nuclear Information System (INIS)

In the Carpathian Basin, significant percentage of watershed area and floodplains of rivers are utilised agriculturally. Several potential sources of poisonous metal pollution have been identified in these areas. Because of spills from some of them a few severe accidents have happened especially in the watershed area of Tisza River during the last decades. The motivation of our present work was to produce "6"2","6"5Zn and "2"0"3Pb radioisotopes because they can be used especially as tracers for studying the kinetics of uptake, transport and accumulation of zinc and lead by plants under different circumstances. (orig.)

456

Process for the manufacture of semi-rigid, folding solar generators manufactured from several coated solar cells. Verfahren zur Herstellung eines halbstarren, faltbaren, aus mehreren bedeckten Solarzellen (Cics) hergestellten Solargenerators  

Energy Technology Data Exchange (ETDEWEB)

This is a process for manufacturing a semi-rigid, folding solar generator manufactured from several coated solar cells (Cics), which has at least two folding parts connected together so as to turn by hinges, characterized by the following stages of the process: a) On the back of matrix subsections, in order to cover the connector, carbon fibre strips are glued on, which project over the upper or lower edge of each matrix subsection. b) The projecting ends of adjacent carbon fiber strips are connected with two carbon fibre strips. c) At least two matrix subsections are fixed in separately manufactured carbon fiber frames, and d) the carbon fiber frames, together with the matrix subsections are connected via hinges to a solar generator.

1985-10-31

457

Pretransplant Predictors and Posttransplant Sequels of Acute Kidney Injury after Allogeneic Stem Cell Transplantation  

British Library Electronic Table of Contents (United Kingdom)

Acute kidney injury (AKI) is a common complication after allogeneic stem cell transplantation (SCT). Although various risk factors for AKI have been reported, the influence of pretransplant comorbidity on the incidence of AKI has not been well investigated. We performed a retrospective analysis of 207 consecutive patients undergoing myeloablative or nonmyeloablative SCT between 2001 and 2009, using the hematopoietic cell transplantation-specific comorbidity index (HCT-CI) as a representative of pretransplant comorbidities. According to Risk, Injury, Failure, Loss, and End-stage kidney disease (RIFLE) criteria, 158 patients (76.3%) developed AKI, and 92 patients (44.4%) developed severe AKI (RIFLE class I or class F) within 100 days after SCT. The cumulative incidence of severe AKI within 1...

2011-01-01

458

Preliminary Fabry Perot testing - 1986  

Science.gov (United States)

Fabry Perot interferometry is a method of determining instantaneous velocities of an object in motion. The interferometer system is composed of the Fabry Perot interferometer, a laser, an electronic streak camera, and several focusing lenses. The first tests discussed were done on exploding bridgewire devices. During these tests, several system parameters were changed. These changes did not seem to affect the data, which appeared to be consistent. The second tests performed focused on slapper-type devices. It was determined that sandblasted, vapor-deposited aluminum on the slapper material would be required to yield quality data. Streak camera failure prevented much data from being collected. An effort is being made to replace the current streak camera. After it is replaced, a Fabry Perot and velocity interferometry system for any reflector comparison will be made. The results will be published as the conclusion to this report.

1987-04-30

459

Potential new approaches for the development of brain imaging agents for single-photon applications  

International Nuclear Information System (INIS)

The goals of this paper are to describe new strategies being pursued at several institutions for the brain-specific delivery of radionuclides that can be used to evaluate regional cerebral perfusion by single photon imaging techniques. A comprehensive review of the literature is beyond the scope of these proceedings and our goal is to, therefore, present a description of several examples of interesting new strategies that have recently been reported. In addition, the authors also describe a new approach being pursued at their institution for the brain-specific delivery of radioiodinated iodophenylaklyl-substituted dihydronicotiamide systems which shows good brain uptake and retention in preliminary studies in rats. Following transport into the brain these agents appear to undergo facile intracerebral oxidation to the quaternized analogues which do not cross the intact blood-brain-barrier and are effectively trapped in the brain.

460

Photosynthetic consequences of phenotypic plasticity in response to submergence: Rumex palustris as a case study  

British Library Electronic Table of Contents (United Kingdom)

Survival and growth of terrestrial plants is negatively affected by complete submergence. This is mainly the result of hampered gas exchange between plants and their environment, since gas diffusion is severely reduced in water compared with air, resulting in O2 deficits which limit aerobic respiration. The continuation of photosynthesis could probably alleviate submergence-stress in terrestrial plants, but its potential under water will be limited as the availability of CO2 is hampered. Several submerged terrestrial plant species, however, express plastic responses of the shoot which may reduce gas diffusion resistance and enhance benefits from underwater photosynthesis. In particular, the plasticity of the flooding-tolerant terrestrial species Rumex palustris turned out to be remarkable,...

2006-01-01

461

Photochemical assessment monitoring: Overview and current status  

Energy Technology Data Exchange (ETDEWEB)

The Clean Air Act Amendments of 1990, established requirements for the Environmental Protection Agency (EPA) to develop rules for the establishment of enhanced ozone monitoring networks or Photochemical Assessment Monitoring Stations (PAMS) in ozone nonattainment areas designated as serious, severe, and extreme. The subsequent rules require these stations to collect ambient air measurements for a target list of volatile organic compounds including several carbonyls, oxides of nitrogen, ozone, and meteorological measurements, both surface and upper air. Twenty-two areas in the US are obligated to install and operate PAMS stations to aid in the identification, development, and implementation of effective ozone control strategies. This paper will examine the specific requirements of the PAMS rules and will provide information regarding the current status of the networks and overall implementation issues.

1994-12-31

462

Opportunities and issues in international photovoltaic market development  

Energy Technology Data Exchange (ETDEWEB)

The confluence of technology development and market readiness is opening up major business opportunities for photovoltaic (PV) systems throughout the developing world. The National Renewable Energy Laboratory (NREL) and Sandia National Laboratories in Abuquerque (Sandia), working on behalf of the U.S. Department of Energy, have launched pilot projects in several countries throughout the world over the past 3 years. The focus of these pilot projects has been the development of in-country institutional capabilities necessary to deliver the promise of PV electricity to the rural populations. In addition to country-specific activities, NREL is conducting several technology, information, and partnership projects focused on further accelerating the education, training, business, and technology developments necessary to bridge the gap between promise and reality. This paper summarizes these efforts.

1996-05-01

463

Numerical modeling of a MEMS actuator considering several magnetic force calculation methods  

British Library Electronic Table of Contents (United Kingdom)

Purpose - The purpose of this paper is to investigate the accuracy of different force calculation methods and their impact on mechanical deformations. For this purpose, a micrometer scaled actuator is considered, which consists of a micro-coil and of a permanent magnet (PM) embedded in a deformable elastomeric layer. Design/methodology/approach - For the magnetic field evaluation a hybrid numerical approach (finite element method/boundary element method (FEM/BEM) coupling and a FEM/BEM/Biot-Savart approach) is used, whereas FEM is implemented for the mechanical deformation analysis. Furthermore, for the magneto-mechanical coupling several force calculation methods, namely the Maxwell stress tensor, the virtual work approach and the equivalent magnetic sources methods, are considered and co...

2011-01-01

464

Monolayers at air-water interfaces: from origins-of-life to nanotechnology  

British Library Electronic Table of Contents (United Kingdom)

Abstract The air-water interface presents several interesting features, namely a) a molecularly flat environment, b) a boundary region between two phases with different dielectric constants, c) permits or promotes dynamic interactions within the interface region, and d) a point of interaction between hydrophobic compounds and aqueous molecules. Accordingly, Langmuir monolayers at the air-water interface have several unique characteristics and properties, which require investigation. In this review-type personal account, typical examples of molecular recognition and molecular patterning at air-water interfaces are first introduced, followed by descriptions of specific and unusual properties of monolayers on water. In addition, two examples of our own results concerning Langmuir monolayers a...

2011-01-01

465

Memory of multiple aging stages above the freezing temperature in the Relaxor ferroelectric PLZT.  

Science.gov (United States)

The dynamic dielectric susceptibility and the elastic compliance of the relaxor ferroelectric lanthanum lead zirconate titanate (PLZT) 9/65/35 have been measured under different cooling and heating protocols in order to study aging and memory. The memory of multiple aging stages at different temperatures has been found (several dips in the susceptibility curves on heating), as in spin glass systems below the glass transition. Remarkably, in PLZT the memory of several aging stages is retained also above the freezing temperature deduced from the dynamic susceptibilities. The results are discussed in light of the existing models of aging and memory in spin and dipolar glasses. PMID:15447139

2004-08-24

466

Linearized augmented-plane-wave method for quasi-unidimensional systems: Carbyne and nanotube (Sc@C{sub 20})  

Energy Technology Data Exchange (ETDEWEB)

The advent of carbon nanotubes, which are graphite layers convoluted in cylinders several nanometers in diameter and several micrometers in length, as well as the experiments on implanting metal atoms in such tubes open the way to producing nanoconductors and other materials with unique properties. For theorists, the basic challenge is interpreting and predicting the structure and properties of these systems. The linearized augmented-plane-wave method (LAPW) is one of the most accurate methods in the theory of the electronic structure of solids. A generalization of this method for quasi-two-dimensional systems, surface electronic states, and layered crystals is known. The LAPW theory for quasi-unidimensional systems, which exhibit translational symmetry in one direction, has been absent thus far. In this paper, the authors suggest a version of such a theory and use this method to calculate the electronic structure of carbyne (a linear chain of ...

1995-10-01

467

Inhibition of the heterotetrameric K++ channel KCNQ1/KCNE1 by the AMP-activated protein kinase  

British Library Electronic Table of Contents (United Kingdom)

Abstract The heterotetrameric K++-channel KCNQ1/KCNE1 is expressed in heart, skeletal muscle, liver and several epithelia including the renal proximal tubule. In the heart, it contributes to the repolarization of cardiomyocytes. The repolarization is impaired in ischemia. Ischemia stimulates the AMP-activated protein kinase (AMPK), a serine/threonine kinase, sensing energy depletion and stimulating several cellular mechanisms to enhance energy production and to limit energy utilization. AMPK has previously been shown to downregulate the epithelial Na++ channel ENaC, an effect mediated by the ubiquitin ligase Nedd4-2. The present study explored whether AMPK regulates KCNQ1/KCNE1. To this end, cRNA encoding KCNQ1/KCNE1 was injected into Xenopus oocytes with and without additional injection o...

2011-01-01

468

Illness and personality maturation: The search for meaning in severe illness  

British Library Electronic Table of Contents (United Kingdom)

Background In scientific literature, when the consequences of illness are discussed, one finds that the deficit perspective is prevailing: Illness as the cause for loss of abilities and a loss of contentment. On the other hand, particularly with creative people, an increase of creativity can be observed, following a confrontation with and having endured a period of illness. When one considers the occurrence of illness retrospectively in a biographical context, one may find often a biographical standstill. Although illness and disease are considered as a collapse, one may observe also psycho-spiritual maturation processes during the confrontation with illness. In several cases illness can thus result in personality maturation and a higher level of psychological health. Aims Despite of the f...

2008-01-01

469

Generation of simulated earthquake motion to fit widely-enveloped severe test response spectrum for lightly-damped equipment  

International Nuclear Information System (INIS)

This paper reviews generation methods of artificial earthquake motion and proposes an improved method of generating input motions for use in vibration tests of equipment to prove aseismic performance. The improved method employs beat wave repetition characteristic that inherently appears in the component waves of recorded earthquakes decomposed by bandpass filter and algebraic function phase for the component waves. Typical motions generated by the improved method satisfies prescribed severe conditions such as target response spectrum that are defined with a wideband frequency component and a limited maximum acceleration due to shaking table performance. The motions had never been generated by the conventional method.

1993-07-25

470

Final Report for Award DE-FG02-99ER54554 Kinetics of Electron Fluxes in Low-Pressure Nonthermal Plasmas  

Energy Technology Data Exchange (ETDEWEB)

This grant has focused on the study of several aspects of electron kinetics in low pressure plasmas. Entirely new effects arise from the fact that the electron kinetics is governed by non-local effects, in which the electron distribution function is not equilibrium with the local electric field but is governed by spatial transport effects. In this grant, we were able to demonstrate several previously un-studied effects which are a direct result of the nonlocal transport. These are: (1) The existence of a ''convective cell' in electron phase space. The phenomenon was observed and studied in CW plasma conditions. (2) The occurrence of non-collisional cooling of electrons through an effect known as ''diffusive cooling''.

2004-12-13

471

Fabrication and characterization of low aberration micrometer-sized electron lenses  

British Library Electronic Table of Contents (United Kingdom)

Intrinsic spherical aberrations of electron lenses have been the major resolution limiting factor in electron microscopes for several decades. While effective correctors have recently been implemented, an alternative to correct these aberrations is to circumvent them by scaling down lens dimensions by several orders of magnitude. We have fabricated electrostatic lenses exhibiting one micrometer diameter apertures and evaluated their beam forming properties against predictions from numerical ray tracing simulations. It turns out that it is routinely possible to shape a paraxial low-energy electron beam by such micron-sized lenses. Beam profiles have been measured both at a distant detector as well as in a plane close to the lens. It is shown that the lens can form a parallel beam extending ...

2010-01-01

472

Exploration of the hypothalamic?pituitary?adrenal function as a tool to evaluate animal welfare  

British Library Electronic Table of Contents (United Kingdom)

Measuring HPA axis activity is the standard approach to the study of stress and welfare in farm animals. Although the reference technique is the use of blood plasma to measure glucocorticoid hormones (cortisol or corticosterone), several alternative methods such as the measurement of corticosteroids in saliva, urine or faeces have been developed to overcome the stress induced by blood sampling itself. In chronic stress situations, as is frequently the case in studies about farm animal welfare, hormonal secretions are usually unchanged but dynamic testing allows the demonstration of functional changes at several levels of the system, including the sensitization of the adrenal cortex to ACTH and the resistance of the axis to feedback inhibition by corticosteroids (dexamethasone suppression t...

2007-01-01

473

Effect of biodegradation on vanadylporphyrin distribution  

Energy Technology Data Exchange (ETDEWEB)

Oils, tars, and degraded oils of varying degrees of biodegradation occur in the Permian Phosphoria Formation along the eastern flank of the Wind River mountains, Wyoming, US. Biodegradation has altered the isomer distributions of steranes, the hopanes, and the mono- and triaromatised steroids in these oils. The conventional maturity parameters based on these biomarkers are of limited use in estimating their maturity. On the other hand, even in severely biodegraded oils the vanadylporphyrin distributions are unaltered. Because of this, the Porphyrin Maturity Parameter (PMP) derived from the vanadylporphyrin distribution is an ideal parameter for estimating the maturity of these oils. This study also confirms the previous observation that T[sub s] and T[sub m] are unaffected by even severe biodegradation. 14 refs., 5 figs., 2 tabs.

1993-05-01

474

Dimensional Reductions for the Computation of Time-Dependent Quantum Expectations  

CERN Document Server

We consider dimensional reduction techniques for the Liouville-von Neumann equation for the evaluation of the expectation values in a mixed quantum system. In applications such as nuclear spin dynamics the main goal for simulations is being able to simulate a system with as many spins as possible, for this reason it is very important to have an efficient method that scales well with respect to particle numbers. We describe several existing methods that have appeared in the literature, pointing out their limitations particularly in the setting of large systems. We introduce a method for direct computation of expectations via Chebyshev polynomials (DEC) based on evaluation of a trace formula combined with expansion in modified Chebyshev polynomials. This reduction is highly efficient and does not destroy any information. We demonstrate the practical application of the scheme for a nuclear spin system and compare with several alternatives, ...

2010-01-01

475

Diagnostics hardening for harsh environment in Laser Megajoule (invited)  

International Nuclear Information System (INIS)

The diagnostic designs for the Laser Megajoule (LMJ) will require components to operate in environments far more severe than those encountered in present facilities. This harsh environment will be induced by fluxes of neutrons, gamma rays, energetic ions, electromagnetic radiations, and, in some cases, debris and shrapnel, at levels several orders of magnitude higher than those experienced today on existing facilities. The lessons learned about the vulnerabilities of present diagnostic parts fielded mainly on OMEGA for many years, have been very useful guide for the design of future LMJ diagnostics. The present and future LMJ diagnostic designs including this vulnerability approach and their main mitigation techniques will be presented together with the main characteristics of the LMJ facility that provide for diagnostic protection.

2008-10-01

476

Development towards optimization of emergency countermeasures  

International Nuclear Information System (INIS)

We report on severe accident scenarios consequences evaluation in connection to the applied emergency countermeasures and use of the PC COSYMA code. We present some of the results for the reactor core melt accident assumed to happen at the 632 MWE PWR Krsko Nuclear Power Plant in Slovenia. The efficiency of several potential countermeasures in limiting the late health effects was studied. Regarding the source term, the majority of release parameters are as specified for category 2 in the German Risk Study. Site specific data were used. As the outside (meteorologic) conditions during the potential accident onset can be very different, the study limited to the deterministic runs, assuming the wind direction upstream the Sava river into the WNW direction, wind speed of 5 ms -1 and the C Pasquill stability category. The population distribution file was formed from the NEK-FSAR data for the 1991. (author)

1995-09-11

477

Cortical neuritic plaques and hippocampal neurofibrillary tangles are related to dementia severity in elderly schizophrenia patients  

British Library Electronic Table of Contents (United Kingdom)

Cognitive decline has been described in elderly patients with schizophrenia, but the underlying pathology remains unknown. Some studies report increases in plaques and neurofibrillary tangles, but there is no evidence for an increased risk for Alzheimer's disease (AD) in elderly schizophrenics. Models of a decreased cerebral reserve suggest that increases in AD-related neuropathology below the threshold for a neuropathological diagnosis could be related to dementia severity in elderly schizophrenia patients. We tested this hypothesis in 110 autopsy specimens of schizophrenia patients, without a neuropathological diagnosis of AD or other neurodegenerative disorders. Furthermore, we assessed the effects of apolipoprotein E (ApoE) status, a known genetic risk factor for AD. Measures of densit...

2010-01-01

478

Correspondence of interactive voice response (IVR) reports of nicotine withdrawal, craving, and negative mood with questionnaire ratings  

British Library Electronic Table of Contents (United Kingdom)

This study focuses on comparing reports of nicotine withdrawal, craving, and depressive symptoms obtained using an Interactive Voice Response (IVR) system and several questionnaires. As part of a smoking cessation trial, daily reports of withdrawal, craving, and negative mood were collected using an IVR system for 7 days after participants attempted to quit smoking, and several pencil and paper questionnaires (i.e., the Minnesota Nicotine Withdrawal Scale, the Questionnaire on Smoking Urges, and the Center for Epidemiological Studies-Depression) were completed a week after the target quit date. The sample was composed of 378 daily smokers. Moderate to high correlations were found between the research questionnaires obtained at the end of the week and the corresponding daily IVR reports of ...

2008-01-01

479

Bilateral but not Unilateral Testicular Hypotrophy Predicts for Severe Impairment of Semen Quality in Men with Varicocele Undergoing Infertility Evaluation  

British Library Electronic Table of Contents (United Kingdom)

ObjectivesVaricocele is a common cause of infertility, and varicocele-associated testicular hypotrophy has been described as a potential cause of decreased semen quality. We investigated the relationship between testicular hypotrophy and poor semen quality in infertile men with varicoceles. We hypothesized that bilateral hypotrophy is required before the semen quality is severely impaired.MethodsWe retrospectively identified consecutive patients with palpable varicoceles undergoing an infertility evaluation at a single academic center. Each patient was evaluated by the same clinician with history and physical examination. Testicular hypotrophy was defined as a size discrepancy of greater than 3 mL or an absolute size of less than 14 mL. Multivariate logistic regression analysis was used to...

2008-01-01

480

Augmenting Actual Life Through MUVEs  

CERN Document Server

The necessity of supporting more and more social interaction (and not only the mere information sharing) in online environments is the disruptive force upon which phenomena ascribed to the Web2.0 paradigm continuously bud. People interacting in online socio-technical environments mould technology on their needs, seamlessly integrating it into their everyday life. MUVEs (Multi User Virtual Environments) are no exception and, in several cases, represent the new frontier in this field. In this work we analyze if and how MUVEs can be considered a mean for augmenting communities (and more in general people) life. We trace a framework of analysis based on four main observations, and through these lenses we look at Second Life and at several projects we are currently developing in that synthetic world.

2008-01-01

481

Assessment of the efficiency of short term countermeasures following a severe accident on a PWR  

Energy Technology Data Exchange (ETDEWEB)

In case of a severe nuclear accident at a PWR plant, countermeasures will be initiated in the short term by authorities to reduce the consequences of the atmospheric radioactive releases on the neighbouring population. Various factors influence the level of protection afforded by countermeasures. For instance, a too late intervention would lead to a Jack of efficiency in terms of dose reduction if the actual evolution of the accident is not considered. Thus, implementation of countermeasures should be optimized. In general, the projected doses (those without countermeasure) are compared with those expected when a particular countermeasure or strategy is implemented. In this paper, an in-depth analysis associates the kinetics of the release with the corresponding evolution of the dosimetric efficiency of countermeasures. This is done at different times in the short term of the accident and for various distances from the plant. Results are presented for different ...

2001-07-01

482

Assessing the performance and benefits of customer distributed generation developers under uncertainties  

British Library Electronic Table of Contents (United Kingdom)

In this paper, the performance of customer-owned distributed generation (DG) units is quantified from different perspectives through an uncertainty study. A Monte Carlo-based method is applied to assess the stochastic operation of the customer-owned DG units in the power distribution system. Several cases are studied to analyze the impact on system performance of using such generators, with the emphasis on benefits. The results of the studied cases show that proper operation of customer-owned DG units placed close to significant consumption centers offers several benefits which lead to significant energy savings and improvement in the performance indices while maintaining the cost-effectiveness. Furthermore, based on the energy demand, different electricity price scenarios considering a co...

2011-01-01

483

Application of remote sensing to identify coalfires in the Raniganj Coalbelt, India  

British Library Electronic Table of Contents (United Kingdom)

Raniganj and Jharia regions together have been for long the single largest coal supplier in India, now contributing about a quarter of the total output in the country. Numerous reasons such as improper mining techniques and policy, as well as unauthorized mining caused surface and subsurface coalfires in these areas. These coalfires burn millions of tonnes of valuable coal resources, creating severe environmental problems and posing enormous operational difficulties of mining. After first use of remote sensing as a tool to identify coalfires in 1960s, with the time, the efficiency of remote sensing to identify and monitoring coalfires has been well established by several researchers. With the knowledge of local geological setting and density sliced surface temperature image the spatial dis...

2006-01-01

484

Apelin, diabetes, and obesity  

British Library Electronic Table of Contents (United Kingdom)

Apelin is a peptide known as the ligand of the G-protein-coupled receptor APJ. Several active apelin forms exist such as apelin-36, apelin-17, apelin-13, and the pyroglutamated form of apelin-13. Apelin and APJ are expressed in the central nervous system, particularly in the hypothalamus and in many peripheral tissues. Apelin has been shown to be involved in the regulation of cardiovascular and fluid homeostasis, food intake, cell proliferation, and angiogenesis. In addition to be an ubiquitous peptide, apelin is also produced and secreted by adipocytes and thus considered as an adipokine. This has opened a new field of investigation establishing a link between apelin and metabolic disorders (obesity, type 2 diabetes, etc.) which is the focus of the present review. Several studies, but not...

2011-01-01

485

An overview of physical and biogeochemical processes and ecosystem dynamics in the Taiwan Strait  

British Library Electronic Table of Contents (United Kingdom)

The Taiwan Strait is an important channel in the west Pacific Ocean transporting water and chemical constituents between the East China Sea and the South China Sea. Due to its complex bottom topography, alternating monsoon forcing and conjunction of several current systems [such as the Zhejiang-Fujian (Zhe-Min) Coastal Current, the Kuroshio intrusion and the extension of the South China Sea Warm Current], the physical and biogeochemical processes and ecosystem dynamics in the Taiwan Strait vary significantly both in space and in time. Our recent interdisciplinary studies, combining in situ and remote sensing observations with numerical modeling, allow us to address several important issues concerning the Taiwan Strait. The temporal and spatial variation of circulation in the Taiwan Strait ...

2011-01-01

486

Accelerated aging corrosion tests for buried metal structures  

Energy Technology Data Exchange (ETDEWEB)

It is necessary to identify those measurable soil parameters which dictate the severity of the corrosion problem for coated irons and steels. When this is done, meaningful accelerated aging tests can be designed to validate the reduced corrosion rate for the planned coating. The following discussion introduces the important concepts and measurement parameters in the (a) design of accelerated aging tests, and (b) evaluation of the planned installation site for corrosion potential. Certain combinations of soil oxidation reduction potential (ORP) or electric potential (Eh), acidity (pH), fertilizer, water table, and soil hydraulic conductivity can result in severe corrosion of buried steel/iron vessels. If there are power lines nearby, additional loss of vessel material to the soil will occur. These factors are discussed.

1996-10-01

487

Absence of positive effect of black cohosh (Cimicifuga racemosa) on fracture healing in osteopenic rodent model  

British Library Electronic Table of Contents (United Kingdom)

Abstract The healing of predominantly metaphyseal fractures in postmenopausal osteoporosis is delayed and comparatively poor. Due to the potential side effects of HRT, natural alternatives are appealing. The aim of this study was to determine whether Cimicifuga racemosa extract BNO 1055 improves metaphyseal fracture healing in severe osteopenic bone in rats. Thirty three 12 week old female rats developed severe osteopenia during 10 weeks after ovariectomy. After metaphyseal tibial osteotomy and standardized T plate osteosynthesis, the healing periods in ovariectomized rats (C), 17 estradiol (E) and Cimicifuga racemosa (CR) supplemented diets were assessed for 35 days. Changes in callus morphology were evaluated qualitatively by biomechanical testing and quantitatively in microradiographies...

2010-01-01

488

A simple model for AGN feedback in nearby early-type galaxies  

British Library Electronic Table of Contents (United Kingdom)

Abstract Recent work (Schawinski et al.) indicates that star-forming early-type galaxies residing in the blue cloud migrate rapidly to the red sequence within around a Gyr, passing through several phases of increasingly strong active galactic nucleus (AGN) activity in the process. We show that natural depletion of the cold gas reservoir through star formation (i.e. in the absence of any feedback from the AGN) induces a blue-to-red reddening rate that is several factors lower than that observed by Schawinski et al. This is because the gas depletion rate due to star formation alone is too slow, implying that another process needs to be invoked to remove cold gas from the system and accelerate the reddening rate. We develop a simple phenomenological model, in which a fraction of the AGN-s lum...

2011-01-01

489

A numerical study of expected accuracy and precision in Calibration-Free Laser-Induced Breakdown Spectroscopy in the assumption of ideal analytical plasma  

British Library Electronic Table of Contents (United Kingdom)

Calibration-Free Laser-Induced Breakdown Spectroscopy (CF-LIBS) has been proposed several years ago as an approach for quantitative analysis of Laser-Induced Breakdown Spectroscopy spectra. Recently developed refinement of the spectral processing method is described in the present work. Accurate quantitative results have been demonstrated for several metallic alloys. However, the degree of accuracy that can be achieved with Calibration-Free Laser-Induced Breakdown Spectroscopy analysis of generic samples still needs to be thoroughly investigated. The authors have undertaken a systematic study of errors and biasing factors affecting the calculation in the Calibration-Free Laser-Induced Breakdown Spectroscopy spectra processing. These factors may be classified in three main groups: 1) experi...

2007-01-01

490

A note on classical ground state energies  

CERN Document Server

The pair-specific ground state energy of Newtonian N-body systems grows monotonically in N. This furnishes a whole family of simple new tests for minimality of putative ground state energies obtained through computer experiments. Inspection of several publically available lists of such computer-experimentally obtained putative ground state energies has yielded several dozen instances which failed (at least) one of these tests. Although the correct ground state energy is not revealed by this method, it does yield a better upper bound on it than the experimentally found value whenever the latter fails a monotonicity test. The surveyed N-body systems include in particular N point charges with 2- or 3-dimensional Coulomb pair interactions, placed either on the unit 2-sphere or on a 2-torus (a.k.a. Thomson, Fekete, or Riesz problems).

2009-01-01

491

A Network Coding Approach to Loss Tomography  

CERN Document Server

Network tomography aims at inferring internal network characteristics based on measurements at the edge of the network. In loss tomography, in particular, the characteristic of interest is the loss rate of individual links. There is a significant body of work dedicated to this problem using multicast and/or unicast end-to-end probes. Independently, recent advances in network coding have shown that there are several advantages from allowing intermediate nodes to process and combine, in addition to just forward, packets. In this paper, we pose the problem of loss tomography in networks that have network coding capabilities. We design a framework for estimating link loss rates, which leverages network coding capabilities and we show that it improves several aspects of tomography, including the identifiability of links, the tradeoff between estimation accuracy and bandwidth efficiency, and the complexity of probe path selection. We discuss the ...

2010-01-01

492

X-ray generation by the Smith-Purcell effect  

International Nuclear Information System (INIS)

Smith-Purcell (S-P) radiation is produced when electrons graze the surface of a grating. Calculations based on the theory of diffraction radiation show that, given severe restrictions on e"--beam quality, S-P radiation is highly efficient. Efficient S-P x-ray generation requires relativistic e"- beams having a transverse momentum and dimension whose product approaches the Heisenberg uncertainty limit.

493

Theory of sexes by Geodakian as advanced by Iskrin  

CERN Document Server

In 1960s V.Geodakian proposed a theory that explains sexes as a mechanism for evolutionary adaptation of the species to changing environmental conditions. In 2001 V.Iskrin refined and augmented the concepts of Geodakian and gave a new and interesting explanation to several phenomena which involve sex, and sex ratio, including the war-years phenomena. He also introduced a new concept of the "catastrophic sex ratio." This note is an attempt to digest technical aspects of the new ideas by Iskrin.

2006-01-01

494

Tachyons revisited  

International Nuclear Information System (INIS)

An apparently significant result in an experiment to search for tachyons in the interval of time immediately preceding in the arrival of air showers of energy approximately 10"1"5 eV is considered. Several similar experiments have been completed, all of which have yielded null results. The original data of the foregoing reference have been re-examined and it is shown that an artifact of the apparatus was contributing to the original apparently significant results. (orig./BJ).

495

On stochastic approximation algorithms for classes of PAC learning problems  

Energy Technology Data Exchange (ETDEWEB)

The classical stochastic approximation methods are shown to yield algorithms to solve several formulations of the PAC learning problem defined on the domain [o,1]{sup d}. Under some assumptions on different ability of the probability measure functions, simple algorithms to solve some PAC learning problems are proposed based on networks of non-polynomial units (e.g. artificial neural networks). Conditions on the sizes of these samples required to ensure the error bounds are derived using martingale inequalities.

1994-03-01

496

In a spin over power fluidics  

International Nuclear Information System (INIS)

In response to severe maintenance problems caused by the highly corrosive toxic and radioactive substance used in the nuclear reprocessing industry, AEA Technology (formerly the United Kingdom Atomic Energy Authority) has developed a series of power fluidics devices with no moving parts. These maintenance-free devices are described in this article which also explores applications in fields outside their original brief. (UK).

497

Heuristic paradigm: power electricity appliances; Aplicacoes de um paradigma heuristico adaptativo a eletricidade de potencia  

Energy Technology Data Exchange (ETDEWEB)

This paper presents general considerations concerning the application of artificial neural networks algorithms, more specifically the back-propagation learning algorithm and feed-forward multi-layer networks, to several problems in power system. The main application in power systems is the load forecasting, and two solution methods are used to solve it. (author). 45 figs., 32 tabs., 144 refs.

1994-12-31

498

Digital optical processing system  

Energy Technology Data Exchange (ETDEWEB)

Digital optical processing (DOP) was conceived to encompass the advantages of both electronic and optical processors, which are parallelism, flexibility, and high accuracy. The authors discuss the concept of parallelism, how it applies to DOP differently than to electronic parallel processing, and other potential advantages in using DOP. A PLZT memory device is described which can perform a series of logic or memory operations. From several of these PLZT devices a DOP is constructed to illustrate some of its programmability features.

1983-01-01

499

Computed tomography - old ideas and new technology  

International Nuclear Information System (INIS)

Several recently introduced 'new' techniques in computed tomography - iterative reconstruction, gated cardiac CT, multiple-source, and dual-energy CT - actually date back to the early days of CT. We review the historic origins and evolution of these techniques, which may provide some insight into the latest innovations in commercial CT systems. (orig.)

2011-03-01