نتایج جستجو برای: 21 and 30 percent

تعداد نتایج: 16931693  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

Journal: :Chest 1984
A Castañer A Betriu G Sanz J C Paré S Coll J Soler E Roig F Navarro-López

The prevalence and prognosis of severe left ventricular dysfunction after infarction was prospectively analyzed in a series of 259 male patients aged 60 years or less surviving an acute myocardial infarction. All patients underwent coronary angiography 30 days after the acute event and were followed up for a mean period of 34 months (range, 15 to 55 months). Forty-five patients (17 percent) wer...

Journal: :Alcohol research & health : the journal of the National Institute on Alcohol Abuse and Alcoholism 2001
R Caetano J Schafer C B Cunradi

Intimate partner violence (IPV) is a major public health problem in the United States. Results from a 1995 national study indicated that 23 percent of the black couples, 11.5 percent of the white couples, and 17 percent of the Hispanic couples surveyed reported an incident of male-to-female partner violence in the 12 months preceding the survey. The rate of female-to-male partner violence was a...

Journal: :Diseases of the chest 1969
E F Beard E Garcia G E Burke W E Dear

Double Master’s exercise tests were performed in the course of general or periodic examinations on 1,375 patients without angina pectoris. These patients were either asymptomatic or had nonspecific chest pain, and patients with angina pectoris or previous myocardial infarction were specifically excluded. Initial tests were negative in 1,269 (92 percent) and positive in 106 (8 percent). Follow-u...

Journal: :Chest 1990
M R Kramer R B Uttamchandani

Pulmonary nocardiosis is a well-described infection in immunocompromised patients; however, it is less well documented in patients with AIDS. The pulmonary manifestation in 21 HIV-positive patients who developed pulmonary infection with Nocardia asteroides is described. The radiographic picture included lobar or multilobar consolidation (52 percent [11/21]), solitary masses (24 percent [5/21]),...

Journal: :The New England journal of medicine 1992
S Yusuf B Pitt C E Davis W B Hood J N Cohn

BACKGROUND It is not known whether the treatment of patients with asymptomatic left ventricular dysfunction reduces mortality and morbidity. We studied the effect of an angiotensin-converting--enzyme inhibitor, enalapril, on total mortality and mortality from cardiovascular causes, the development of heart failure, and hospitalization for heart failure among patients with ejection fractions of ...

Journal: :Chest 1986
V Hoffstein I Brown R Taylor P McLean N Zamel

Upper airway obstruction is usually diagnosed by visual examination of maximum expiratory and inspiratory flow-volume curves and by calculating a ratio of expiratory to inspiratory flow at 50 percent of vital capacity (mid-vital capacity flow ratio); however, reference values of this ratio have not been well established, and considerable variability exists. The purpose of this study was to exam...

Journal: :Pediatrics 2003
Sonja C Burbano O'Leary Steven Federico Louis C Hampers

OBJECTIVE To describe perceptions of how a lack of house staff Spanish proficiency adversely affects communication with Spanish-speaking families with limited English proficiency (LEP). METHODS An anonymous, structured questionnaire was administered to the house staff an of urban, university-affiliated children's hospital that serves a population in which 10%-20% have LEP. RESULTS Ninety-fo...

Journal: :E3S web of conferences 2021

A parametric study of twenty-five reinforced concrete ring deep beams using finite element analysis is presented in this study. This paper took into account the kind loading (partial and complete), diameter, depth, width beam, as well NO. supports. When compared to equivalent concentrated central loading, acting a partial distributed 25-100 percent length span increased capacity load by about 3...

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