3,305 research outputs found
A Comparison of Two Weight Training Programs in Terms of Dynamic Strength Gains
The purpose of the study was to determine the effectiveness of two programs of weight training on strength gains made in the quadriceps, biceps brachii, and pectoralis major muscles. In determining the strength gains of the muscles while using two different programs of training, the following procedure was followed. Three different muscle areas were tested using three different exercises. The exercises and muscle groups were: 1. Leg Press -------- Quadriceps 2. Scott Curl ------- Biceps brachii 3. Bench Press ------- Pectoralis major The subjects (of which there were fourteen) x^ere assigned to treatment groups and training programs at random. The order in which the exercises were performed was also randomized. One program of training utilized two sets of five repetitions for all three exercises, and the other program utilized two sets of one repetition for all three exercises. Each program involved training twice per week for the same time period and lasted for nine weeks. A pre-test vras given the subjects at the beginning of the training period and a post-test was given at the end of nine weeks. The resulting scores from the pre-post-test period were then analyzed to determine whether or not any significant difference in
strength gains existed between the subjects of one group and the subjects of the other group. To determine the significant differences at the 0.05 level of significance t-tests were employed. The individual exercise test analysis of the pre-post-test scores of Group I yielded t-values of 4.637 for the leg press, 2.936 for the Scott curl, and 3.480 for the bench press. The individual exercise test analysis of the pre-post-test scores of Group II yielded t-values of 6.370 for the leg press, 5.589 for the Scott curl, and 5.455 for the bench press. Thus, in Group I and Group II significant differences in strength gains did occur during the training period. The individual exercise test analysis of the post-test scores of Group I and Group II yielded t-values of .857 for the leg press, .605 for the Scott curl, and .770 for the bench press, thus indicating no significant differences in strength gains existed among the subjects of the txro training programs in regard to the individual exercises
Geometric reduction of dynamical nonlocality in nanoscale quantum circuits
Nonlocality is a key feature discriminating quantum and classical physics. Quantum-interference phenomena, such as Young’s double slit experiment, are one of the clearest manifestations of nonlocality, recently addressed as dynamical to specify its origin in the quantum equations of motion. It is well known that loss of dynamical nonlocality can occur due to (partial) collapse of the wavefunction due to a measurement, such as which-path detection. However, alternative mechanisms affecting dynamical nonlocality have hardly been considered, although of crucial importance in many schemes for quantum information processing. Here, we present a fundamentally different pathway of losing dynamical nonlocality, demonstrating that the detailed geometry of the detection scheme is crucial to preserve nonlocality. By means of a solid-state quantum-interference experiment we quantify this effect in a diffusive system. We show that interference is not only affected by decoherence, but also by a loss of dynamical nonlocality based on a local reduction of the number of quantum conduction channels of the interferometer. With our measurements and theoretical model we demonstrate that this mechanism is an intrinsic property of quantum dynamics. Understanding the geometrical constraints protecting nonlocality is crucial when designing quantum networks for quantum information processing
Clinical efficacy and tolerance of sodium hypochlorite combined with taurine on the background of basic therapy in patients with acute pancreatitis.
Acute pancreatitis refers to the most severe urgent diseases of the abdominal cavity. It occupies the third place after acute appendicitis and cholecystitis. The share of acute pancreatitis makes up 5-10% in the urgent pathology of the abdominal cavity organs. At the same time, in each fourth patient aseptic necrotizing pancreatitis develops, the total mortality of which even in specialized clinics of the world remains high (evidence of A, B level) range from 2.1% to 15%. Therefore, the search for new detoxifying agents with high indicators of clinical efficacy is an important trend in modern pharmacology. The purpose of this work was to establish the clinical efficacy and tolerance of the new infusion solution with the working name "Neoreodez", used against the background of basic therapy in patients with acute pancreatitis compared with the group of patients receiving baseline therapy only. A clinical study included 96 patients aged 20 to 65 years (52 men and 44 women) diagnosed with acute pancreatitis. All patients received baseline therapy (spasmolytics, proton pump inhibitors, protease inhibitors, somatostatin, antibiotics). In addition, the patients in the main group were prescribed an experimental infusion solution with the working name "Neoreodez" within 3 days. To evaluate the degree of endogenous intoxication, the method of determining the average mass molecule was used. The estimation was carried out with spectrometry in different modes of X=254 nm and X=280 nm. In addition, at the screening stage a level of malondialdehyde was determined: the latter is a clinical and laboratory marker of oxidative stress and blood pH. It was established, that the clinical efficacy of treatment in the main group of patients receiving the drug "Neoreodez" was 91.6%, which is significantly higher, than the clinical efficacy in the control group – 60.4%. Thus, the hypothesis about higher clinical efficacy of treatment in the main group of patients as compared with the control is confirmed
Information theory and possible mathematical descriptions of economical and social systems based on real physical phenomena
Recent approaches in informatics to model large complex systems are considered following the ideas from real phenomena explained by physical tools. The econo-physics and sociophysics are considered. In particular, Master Equation approach and Markov chains approaches are discussed. Also the partial differential equations as the tool for modeling economical and social systems are represented. New approaches for modeling systems with memory and with accounting internal properties of system elements are considered and some new research problems are proposed.Рассматриваются современные подходы в информатике к моделированию больших сложных систем, аналогичные используемым в физике. Обсуждаются эконофизика и социофизика. Представлены дифференциальные уравнения в частных производных как инструмент для моделирования экономических и общественных систем. Предложены новые подходы к моделированию систем моделирования с памятью и учетом внутренних свойств элементов системы, а также новые проблемы для исследования.Розглядаються сучасні підходи в інформатиці до моделювання великих складних систем, аналогічні тим, що використовуються у фізиці. Обговорюються еконофізика і соціофізика. Наведено диференційні рівняння у частинних похідних як інструмент для моделювання економічних та суспільних систем. Запропоновано нові підходи до моделювання систем із пам’яттю та з урахуванням внутрішніх властивостей елементів системи, а також нові проблеми для досліджень
Features of high-strength composite material structure creation
The basis of technology proposed is use of a sol-gel method for preventing polycrystalline corundum fiber
from crystallization during heating to high temperature and for low-temperature synthesis of prescribed
phases in a corundum matrix with the aim of improving the operating properties of composite materials based
on corundum. As a result of firing a charge based on corundum powder modified with tetraethoxysilane and
polycrystalline corundum fiber modified with ethylsilicate-32 at 1360°C materials are created with very good
strength properties. The materials exhibit electrical insulation properties and are stable in ionized gas streams
at the level of known analogs as a result of creating self-reinforced mullite and β-SiC corundum matrix, reinforced with polycrystalline fiber and rapidly sintered due to presence of silicon oxynitride
Підвищення чутливості та завадостійкості систем цифрового зв’язку
Enhancement of sensitivity and noise immunity of digital communication systems with achievement device are considered. Description, modeling and experiment results are reduced.Рассмотрены способ повышения чувствительности и помехоустойчивости систем цифровой связи, а также устройство для его реализации. Приведены описание, результаты моделирования и эксперимента.Розглянуто засіб підвищення чутливості і завадостійкості систем цифрового зв’язку та пристрій для його реалізації. Наведені результати моделювання та експерименту
Clinical efficacy and tolerance of sodium hypochlorite combined with taurine on the background of basic therapy in patients with acute pancreatitis.
Acute pancreatitis refers to the most severe urgent diseases of the abdominal cavity. It occupies the third place after acute appendicitis and cholecystitis. The share of acute pancreatitis makes up 5-10% in the urgent pathology of the abdominal cavity organs. At the same time, in each fourth patient aseptic necrotizing pancreatitis develops, the total mortality of which even in specialized clinics of the world remains high (evidence of A, B level) range from 2.1% to 15%. Therefore, the search for new detoxifying agents with high indicators of clinical efficacy is an important trend in modern pharmacology. The purpose of this work was to establish the clinical efficacy and tolerance of the new infusion solution with the working name "Neoreodez", used against the background of basic therapy in patients with acute pancreatitis compared with the group of patients receiving baseline therapy only. A clinical study included 96 patients aged 20 to 65 years (52 men and 44 women) diagnosed with acute pancreatitis. All patients received baseline therapy (spasmolytics, proton pump inhibitors, protease inhibitors, somatostatin, antibiotics). In addition, the patients in the main group were prescribed an experimental infusion solution with the working name "Neoreodez" within 3 days. To evaluate the degree of endogenous intoxication, the method of determining the average mass molecule was used. The estimation was carried out with spectrometry in different modes of X=254 nm and X=280 nm. In addition, at the screening stage a level of malondialdehyde was determined: the latter is a clinical and laboratory marker of oxidative stress and blood pH. It was established, that the clinical efficacy of treatment in the main group of patients receiving the drug "Neoreodez" was 91.6%, which is significantly higher, than the clinical efficacy in the control group – 60.4%. Thus, the hypothesis about higher clinical efficacy of treatment in the main group of patients as compared with the control is confirmed
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