oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 45 )

2019 ( 244 )

2018 ( 287 )

2017 ( 288 )

Custom range...

Search Results: 1 - 10 of 225411 matches for " Rendon C. Nelson "
All listed articles are free for downloading (OA Articles)
Page 1 /225411
Display every page Item
Optimization of Contrast Material Dose for Abdominal Multi-Detector Row CT: Predicting Patient Lean Body Weight by Using Preliminary Transverse CT Images  [PDF]
Antonino Guerrisi, Daniele Marin, Huiman Barnhart, Lisa Ho, Thomas L. Toth, Carlo Catalano, Rendon C. Nelson
Advances in Computed Tomography (ACT) , 2014, DOI: 10.4236/act.2014.31001
Abstract:

Estimated LBW could be used to determine the contrast material dose and rate during MDCT. The aim of this study is to test the accuracy of a technique for estimation of lean body weight (LBW) from a single multi-detector row computed tomographic (MDCT) abdominal image, using a bioelectrical body composition analyzer scale as the reference standard. CT images of 21 patients with previously measured LBW (mLBW) were processed using computer-assisted, vendor-specific software (Advantage Windows 4.2; GE Healthcare, Inc). For each transverse image, a fat-fraction was automatically measured as the number of fat pixels (-200 to -50 HU) divided by the total number of pixels having an attenuation value ≥-200 HU. Estimated LBW (eLBW) of five single contiguous sections was calculated in each of three abdominal regions (upper abdomen, mid abdomen and pelvis) by multiplying TBW by (1 – fat-fraction). Bland-Altman plot with limits of agreement was used to assess agreement between mLBW and eLBW. The mean mLBW for all patients was 56 kg (range, 39 - 75 kg). Mean differences and limits of agreement between mLBW and eLBW measurements for the upper abdomen, mid abdomen and pelvis reported were -8.9 kg (-25.6 kg, +7.5 kg), -10.6 kg (-27.7 kg, +6.4 kg), and +0.5 kg (-12.8 kg, +13.8 kg) respectively. eLBW deriving directly from a transverse CT image of the pelvis can accurately predict mLBW.

Hyperbolic Approximation on System of Elasticity in Lagrangian Coordinates  [PDF]
Jose Francisco Caicedo, C. Klingenberg, Yunguang Lu, Leonardo Rendon
Natural Science (NS) , 2014, DOI: 10.4236/ns.2014.67046
Abstract:

In this paper, we construct a sequence of hyperbolic systems (13) to approximate the general system of one-dimensional nonlinear elasticity in Lagrangian coordinates (2). For each fixed approximation parameter \"\", we establish the existence of entropy solutions for the Cauchy problem (13) with bounded initial data (23).


Rectangular wave current effect on plated nickel hardness
Hoyos,B. A.; Ossa,L. A.; Rendon,M. C.;
Latin American applied research , 2008,
Abstract: effects of frequency, average current density and duty cycle on hardness of electroplated nickel were studied in watts and sulphamate solutions by mean of direct and rectangular pulse current. the results in watts solutions show high hardness values at low duty cycles, high average current density and high frequency of the pulse current. hardness in nickel sulphamate solutions shows a low variation with duty cycle and frequency changes. hardness values obtained in the watts bath with rectangular pulse current are higher than those achieved with direct current at the same average current density. in the sulphamate bath this difference has not significance.
Puntaje de detección de riesgo nutricional para mortalidad en pacientes críticamente enfermos: NSRR: Nutritional Score Risk Research
Marín Ramírez,A. M.; Rendon,C.; Valencia,E.;
Nutrición Hospitalaria , 2008,
Abstract: aim: the aim of our study has been applying a nutritional score risk to mortality in a group of patients who are in the intensive care unit with or without previous disease. setting: patients and interventions: a prospective randomized study is designed. place: at the intensive care units. patients: 228 admitted patients since april 2004 to december 2006 were included. the surveys were filled by the near relative who lived with the patient and/or ignorance of its pattern of food ingestion during the newspaper the survey was discarded. critically ill patients were selected at random with pathologies (neurocritical, sepsis, trauma, patients, obstetrics critics, etc.) in 2 units of adult intensive cares. interventions: dialogue with the families. variables: the selected nutritional score (nsr) which is elaborated for greater patients of 65 years now is modifid to be used in intensive care unit, it is a questionnaire that can be very useful in the detection of initial nutritional risk of the critically ill patients. results: our study demonstrated that the alterations of the nsr can be observed in all ages, established by not having a direct correlation between the age and the found nsr (r = 0,15, p = 0,018). this supports the concept of use of the nsr in the adult ages that are admitted in the intensive care unit. in addition, was found that suffering chronic diseases that alter the conditions of ingestion if would feed suitable is an isolated parameter significant to increase the death probability if the patient is in the icu (p =0,002). conclusion: patients with a high nsr at admittion to the intensive care unit for acute pathology are under risk to mortality by nutritional risk.
Rectangular wave current effect on plated nickel hardness
B. A. Hoyos,L. A. Ossa,M. C. Rendon
Latin American applied research , 2008,
Abstract: Effects of frequency, average current density and duty cycle on hardness of electroplated nickel were studied in Watts and sulphamate solutions by mean of direct and rectangular pulse current. The results in Watts solutions show high hardness values at low duty cycles, high average current density and high frequency of the pulse current. Hardness in nickel sulphamate solutions shows a low variation with duty cycle and frequency changes. Hardness values obtained in the Watts bath with rectangular pulse current are higher than those achieved with direct current at the same average current density. In the sulphamate bath this difference has not significance.
Puntaje de detección de riesgo nutricional para mortalidad en pacientes críticamente enfermos: NSRR: Nutritional Score Risk Research Nutritional score risk for mortality in critically ill patients: NSRR: Nutritional Score Risk Research
A. M. Marín Ramírez,C. Rendon,E. Valencia
Nutrición Hospitalaria , 2008,
Abstract: Objetivo: El objetivo principal del estudio fue la validación de un puntaje en la valoración nutricional al momento de llegar a la Unidad de Cuidados Intensivos (UCI) con o sin enfermedad previa, con el fin de establecer riesgos nutricionales de muerte desde el ingreso. Dise o: Se realizó un estudio descriptivo, prospectivo, observacional de carácter transversal de abril del 2004 a diciembre del 2006. ámbito: El estudio fue realizado en UCI. Pacientes y participantes: Para el estudio se lograron encuestar 228 pacientes. Las encuestas eran realizadas al familiar cercano que vivía con el paciente, en aquel momento que el familiar mostrar no convivencia con el paciente y/o desconocimiento de su patrón de ingesta de alimentos durante el diario la encuesta era descartada. Se seleccionaron al azar con patologías críticas (sepsis, trauma, pacientes neurocríticos, pacientes médicos, obstétricas críticas, etc.) en dos unidades de cuidados intensivos. Intervenciones: Interrogatorio a familiares. Variables de interés: El puntaje escogido fue el Nutritional Score Risk (NSR) el cual es elaborado para pacientes mayores de 65 a os, puntaje que es ahora modificado para ser utilizado en las unidades de cuidados intensivos en forma práctica, viable, rápida, clara y útil en la obtención de resultados. Resultados: Nuestro estudio demostró que las alteraciones del NSR se pueden observar en todas las edades, establecido por no haber una correlación directa entre la edad y el NSR encontrado (r = 0,15, p = 0,018), además se encontró que el sufrir enfermedades crónicas que alteren las condiciones de ingesta alimentaria adecuada es un parámetro aislado significativo para incrementar la probabilidad de muerte al ingreso a la UCI (p = 0,002). Conclusiones: El NSR mostró que pacientes con un puntaje alto al ingresar por alguna patología aguda se encuentran en riesgo nutricional de morir. Aim: The aim of our study has been applying a nutritional score risk to mortality in a group of patients who are in the Intensive Care Unit with or without previous disease. Setting: Patients and interventions: a prospective randomized study is designed. Place: At the intensive care units. Patients: 228 admitted patients since april 2004 to december 2006 were included. The surveys were filled by the near relative who lived with the patient and/or ignorance of its pattern of food ingestion during the newspaper the survey was discarded. Critically ill patients were selected at random with pathologies (neurocritical, sepsis, trauma, patients, obstetrics critics, etc.) in 2 units of adult intensive care
Asymptotic behavior of global entropy solutions for nonstrictly hyperbolic systems with linear damping
Juan C. Juajibioy,Richard A De la Cruz,Leonardo Rendon
Mathematics , 2014,
Abstract: In this paper we investigate the large time behavior of the global weak entropy solutions to the symmetric Keyftiz-Kranzer system with linear damping. It is proved that as t tends to infinite the entropy solutions tend to zero in the L p norm
PROPAGANDA: DODELIKE WAPEN VAN DIE KOMMUNISME
C. Nelson
Scientia Militaria : South African Journal of Military Studies , 2012, DOI: 10.5787/7-2-821
Abstract: During the Second World War the effectiveness and importance of the applicetionof propaganda in influencing a mess society became evident. Under the influence ofHitlet and his follower Joseph Goebbels the use of propaganda was developed intoa fine art and was systematically used to convey Nazi ideas to the uninformed masses.Nowadays this seme weapon is used by the Communists to extend their influencebeyond the borders of the Soviet Union. Propaganda may be seen as the deliberate attempt by an individual or group. toinfluence another person or group so that in a given situation the reaction of theinfluenced person will be that desired by the group. It is not always possible toinfluence everyone, as people identified as 'nuclear-personalities' have certain attitudesof long standing which they are normally not apt to surrender. The great masses,however, are 'uninformed stuff' and have no strong opinions of their own, but tendto be guided by their need to belong to a group. Hence their opinions are determinedby those of the group. It is towards reaching the group - the masses - that thepropaganda programme is directed. By means of the radio, newspapers, and othermedia certain ideas are transplanted beyond their borders. This process is usually80 ingeniously conducted that the groups influenced are not aware of it. One of thereasons why they are ceught unawares may be attributed to the fact that the propagandistconfronts them with certain ideas on nationalism or peace which are acceptedby the group. Under this cover the real motives - in this cese the Communist valuesand way of thinking - are conveyed. It is in these hidden and underlying motivesthat the real threat to any state lies, as the bulk of its society is gradually indoctrinatedto come to accept certain Communistic principles, giving the Communist Governmentthe opportunity to extend its sphere of influence and mainstay over another govemment.In this fashion countries are subjugated without any wars being fought.
THE ROLE OF SEA POWER IN THE SOVIET UNION'S STRATEGY FOR WORLD DOMINATION
C. Nelson
Scientia Militaria : South African Journal of Military Studies , 2012, DOI: 10.5787/8-2-787
Abstract: Twenty-one years ago, in 1956, Nikita Khrushchev, First Secretary of the Party, directed the folowing warning to the Western democratic states: 'Whether you like it or not, history is on our side. We will bury YOU.' Since Khrushchev directed this brutally straightforward warning to the Western World that it is the Soviet Union's long-range foreign policy objective to dominate the entire world, the Kremlin has ferociously striven towards the attainment of this goal. Thus all steps, all action and all planning by the Kremlin during the past few decades have formed part of a diabolical and merciless plan to overthrow capitalism during 'the second half of the twentieth century'
Global weak solutions for a 2X2 balance nonsymmetric system of Keyfitz-Kranzer type
Richar A De La Cruz G,Juan C. Juajibioy,Leonardo Rendon
Mathematics , 2015,
Abstract: In this paper we consider the existence of global weak entropy solutions for a particualr nonsymmetric Keyfitz-Kranzer type system, by using the compensated compactness method we get bounde entropy weak solutions
Page 1 /225411
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.