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APPLICATION OF CONTINGENCY THEORY OF ACCOUNTING INFORMATION TO THE UAE BANKING SECTOR
Hikmat A. Alrawi,Suja Sarah Thomas
Asian Academy of Management Journal , 2007,
Abstract: Although extensively studied in the last two decades, contingency theory has been given relatively little consideration in terms of the factors that influence the accounting information systems. Few organizations appear to have systematic processes in place for managing the evolution of their measurement systems and few researchers appear to have explored two of the main questions: What are the requirements of accounting information in UAE banks? And, how efficient is the accounting systems in UAE banks? The paper addresses these questions by providing empirical evidence of management accounting information contingencies based on a sample of banks in the UAE.
Methods of Battery Charging with Buck Converter Using Soft-Switching Techniques
S. Abinaya,A. Sivaranjani,S. Suja
Bonfring International Journal of Power Systems and Integrated Circuits , 2011,
Abstract: This paper is a detailed study on methods of battery charging with Buck Resonant converter using soft switching techniques like ZVS and ZCS. This study also presents the circuit configuration with the least components to realize a highly efficient solar energy battery charger with a zero-voltage and zero current switching resonant converter. The high-frequency resonant converter has numerous well-known advantages over the traditional hard-switching converters. The most important advantage is that it offers a lower switching loss and a higher power density. Additionally, the soft switching current waveform characterizes a lower electromagnetic interference (EMI). The operating principles and design procedure of the proposed charger with both zero voltage and zero current are thoroughly analyzed. The optimal values of the resonant components are computed by applying the characteristic curve and electric functions derived from the circuit configuration. Finally, a simulation model is implemented for charger circuit designed for a 12-V 4-Ah lead acid battery using zero voltage and zero current switching and MATLAB/SIMULINK software is used as the simulation tool. The proposed dc?dc battery charger has a straightforward structure, low cost, easy control, and high efficiency. Satisfactory performance is obtained from the experimental results.
EFECTO DEL PARATHION SOBRE EL íNDICE DE APOPTOSIS EN HEPATOCITOS DE RATONES CF1
Espinoza,Omar; Bustos-Obregón,Eduardo; Suja,José A;
Revista chilena de anatomía , 2002, DOI: 10.4067/S0716-98682002000100005
Abstract: chemical environmental pollution is a major problem at present. agropesticides are relevant in this regard, since they affect human and animal health (draper, 1985; rodríguez & bustos-obregón, 2000). parathion" (pt), an organophosphorate pesticide inhibits acetylcholinesterase and is metabolized in liver, lung and brain. it is transformed in paraoxon (po), its active metabolite (chambers & chambers, 1990 and siller et al., 1997). this work analizes the effect of a single dose of pt on the apoptotic index of cf1 mouse hepatocytes. male cf1 mice (8 to 10 weeks old, average weight of 30 g) were treated with a single injection of pt, of 20 mg/kg body weight (sobarzo & bustos-obregón, 2000). the animals were sacrificed at 1, 8, 16, 28 and 50 days after injection. histological analysis of hepatic tissue was done by light microscopy for counting of apoptotic (and binucleated) cells in he stained slides. it has been postulated that pt is carcinogenic and that it modifies the ability of hepatocytes to regenerate (metcalfe & streuli, 1997 and fausto, 2000). we conclude that pt is cytotoxic even at low concentrations, since it increases apoptosis and affects the normal homeostasis of the hepatic tissue
EFECTO DEL PARATHION SOBRE EL íNDICE DE APOPTOSIS EN HEPATOCITOS DE RATONES CF1 EFFECT OF PARATHION ON THE APOPTOSIS OF CF1 MOUSE HEPATOCYTES
Omar Espinoza,Eduardo Bustos-Obregón,José A Suja
Revista chilena de anatomía , 2002,
Abstract: En las últimas décadas el uso masivo de agropesticidas órganofosforados, como Parathion y Malathion, ha permitido el control de plagas en la producción hortofrutícola, mejorando la productividad e incrementando la oferta de alimentos de mayor calidad. Sin embargo, pese a su efectividad, estos compuestos químicos son potenciales causantes de da os morfológicos y genéticos, de alto riesgo para la Salud Humana y animal (Draper, 1985; Rodríguez y Bustos-Obregón, 2000). El parathion" (PT), inhibidor de la acetilcolinesterasa, se metaboliza en hígado, pulmón y cerebro. El efecto tóxico se debe a un proceso de desulfuración oxidativa hepática, que transforma el PT en paraoxon (PO), siendo éste su metabolito activo (Chambers y Chambers, 1990; Siller et al., 1997). El objetivo del presente trabajo es evaluar los efectos de una dosis única de PT sobre los índices de apoptosis en hepatocitos de ratón CF1. Se usaron ratones macho CF1 de 8 a 10 semanas, con un peso promedio de 30 g, a los cuales se les aplicó una dosis intraperitoneal única de PT de 20 mg/Kg de peso (Sobarzo y Bustos-Obregón, 2000). Posteriormente fueron sacrificados a 1, 8, 16, 28 y 50 días postratamiento. El análisis histológico del hígado se realizó mediante microscopía óptica sobre cortes te idos con hematoxilina/eosina en que se analizó la presencia y frecuencia de hepatocitos apoptóticos. Los resultados obtenidos permiten demostrar el efecto del PT sobre el hepatocito con un aumento estadísticamente significativo de apoptosis. Se postula que el PT es carcinogénico, que bloquea o modifica la capacidad de replicación de los hepatocitos, alterando la susceptibilidad del tejido hepático (Fausto, 2000; Metcalfe y Streuli, 1997). Se concluye que el PT tiene un efecto tóxico, aún en dosis consideradas bajas, aumentando significativamente los índices de eventos apoptóticos, alterando el ciclo celular y afectando la histofisiología del tejido hepático Chemical environmental pollution is a major problem at present. Agropesticides are relevant in this regard, since they affect human and animal health (Draper, 1985; Rodríguez & Bustos-Obregón, 2000). Parathion" (PT), an organophosphorate pesticide inhibits acetylcholinesterase and is metabolized in liver, lung and brain. It is transformed in paraoxon (PO), its active metabolite (Chambers & Chambers, 1990 and Siller et al., 1997). This work analizes the effect of a single dose of PT on the apoptotic index of CF1 mouse hepatocytes. Male CF1 mice (8 to 10 weeks old, average weight of 30 g) were treated with a single injection of PT, of 20 mg/Kg body weight (
Hepatoprotective activity of LIV-first against carbon tetra chloride-induced hepatotoxicity in albino rats
Lima T,Suja A,Jisa O,Sathyanarayanan S
International Journal of Green Pharmacy , 2010,
Abstract: Liver toxicity is a major health problem of worldwide proportions. Herbal medicines derived from plant extracts are being increasingly utilized to treat a wide variety of clinical diseases. In the present study, LIV-first (16.3 mg/kg, p.o.) was used to screen the hepatoprotective activity. Hepatotoxicity was induced in experimental animals by administration of carbon tetrachloride (CCl 4 ) (1 ml/kg, i.p). Silymarin (25 mg/kg,p.o.) was used as the standard. Biochemical parameters like serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transaminase (SGPT), alkaline phosphatase (ALP) and serum bilirubin were measured. Cytotoxicity of CCl 4 was estimated by quantitating the release of malondialdehyde. The activity of tissue antioxidant enzymes namely superoxide dismutase, catalase and the level of total protein and glutathione were also measured. Histopathological evaluation of liver sections was also done. CCl 4 administration in rats elevated the levels of SGPT, SGOT, ALP and bilirubin. Administration of LIV-first significantly ( P< 0.01) prevented this increase. The activity of anti-oxidant enzymes in carbon tetrachloride CCl 4 -treated group was decreased and these enzyme levels were significantly ( P< 0.05) increased in LIV-first-treated groups. Histopathological studies revealed that the concurrent administration of CCl 4 with the extract exhibited protection of the liver tissue, which further evidenced the above results. The study confirmed the hepatoprotective activity of LIV-first, which may be attributed to its antioxidant property.
Antioxidant and antimicrobial activity of Alpinia officinarum
Srividya A,Dhanabal S,Misra V,Suja G
Indian Journal of Pharmaceutical Sciences , 2010,
Abstract: Alpinia officinarum is a rhizome belonging to the family zingeberaeceae. Hydro alcoholic extract by hot and cold maceration and methanol extract by percolation process Qualitative phytochemical analysis of extract of Alpinia officinarum rhizome showed a majority of the compound including tannins, alkaloids, flavonoids and saponins. Hydroalcoholic extract prepared by hot maceration process was found to contain more phenol and flavonol and it was measured as 50.1 mg/g and 54.02 mg/g, respectively. All the three extracts showed moderate to potent antimicrobial activity against the Bacillus cereus, Staphylococcus aureas, Pseudomonas auroginosa, Escherichia coli. None of the extracts showed antifungal activity against Aspergillus niger and Candida albicans. All the three extracts showed a concentration dependent radical scavenging activity by inhibiting diphenylpicrylhydrazyl free radical at the same time hydroalcoholic extract prepared by hot maceration process showed better reducing and total antioxidant activity.
BOD-COD-T0CAI-Based for Prediction Model for Carbon Removal in Full-Bed Configuration of Biological Aerated Filters Utilizing Neural Network
Alvani V.,Suja F.,El-Shafie A.
International Journal of Chemical and Environmental Engineering , 2011,
Abstract: Existing Total Organic Carbon (TOC) in wastewater cause to decrease amount of oxygen and so, It causes to death the sea organisms.It can be analyzed by amount of chemical oxygen demand (COD) and biochemical oxygen demand (BOD). It is because, BOD andCOD experimental outputs have used for evaluation of microorganism in a partial bed reactors to find the percent of existing carbonin wastewater thatit depends on Influenced Totally Organic Carbon (ITOC), Effluent Totally Organic Carbon (ETOC) and organicloading rate (OLR). After the start-up, the reactor has parallel operated at the same hydraulic and organic loading rates. For each steploading in this research, we analyzed the amount of the influent and effluent of thereactor during of unsteady andSteady-stateoperations period by measurement TOC in influent and effluent. The removal rate for each loading was calculated according to themean TOC removal efficiencies and the mean OLRs applied. As we know, experimental work is difficult and so, using a nonexperimentalmethod to collect output data with minimum error and maximum correlation help us to be faster. Artificial neuralnetwork (ANN) is a branch of intelligent network that is applied in current study to predict the carbon removal percentage in partialbed reactor. ITOC, ETOC and OLR are input and carbon removal is output. 300 data used for training and 30 date used for testing.The best network selected base on Root Means Squares Error (RMSE) equal 0.07% and high correlation coefficient equal 0.973.
The Density of States of hole-doped Manganites: A Scanning Tunneling Microscopy/Spectroscopy study
Amlan Biswas,Suja Elizabeth,A. K. Raychaudhuri,H. L. Bhat
Physics , 1998, DOI: 10.1103/PhysRevB.59.5368
Abstract: Variable temperature scanning tunneling microscopy/spectroscopy studies on single crystals and epitaxial thin films of hole-doped manganites, which show colossal magnetoresistance, have been done. We have investigated the variation of the density of states, at and near the Fermi energy ($E_f$), as a function of temperature. Simple calculations have been carried out, to find out the effect of temperature on the tunneling spectra and extract the variation of density of states with temperature, from the observed data. We also report here, atomic resolution images, on the single crystals and larger range images showing the growth patterns on thin films. Our investigation shows unambiguously that there is a rapid variation in density of states for temperatures near the Curie temperature ($T_c$). While for temperatures below $T_c$, a finite DOS is observed at $E_f$, for temperatures near $T_c$ a hard gap opens up in the density of states near $E_f$. For temperatures much higher than $T_c$, this gap most likely gives way to a soft gap. The observed hard gap for temperatures near $T_c$, is somewhat higher than the transport gap for all the materials. For different materials, we find that the magnitude of the hard gap decreases as the $T_c$ of the material increases and eventually, for materials with a $T_c$ close to 400 K, the value of the gap approaches zero.
A Block Based Scheme for Enhancing Low Luminated Images
A. Saradha Devi,S. Suja Priyadharsini,S. Athinarayanan
Computer Science , 2010,
Abstract: In this paper the background detection in images in poor lighting can be done by the use of morphological filters. Lately contrast image enhancement technique is used to detect the background in image which uses Weber's Law. The proposed technique is more effective one in which the background detection in image can be done in color images. The given image obtained in this method is very effective one. More enhancement can be obtained while comparing the results. In this technique compressed domain enhancement has been used for better result.
A Block Based Scheme for Enhancing Low Luminated Images
A.Saradha Devi,S.Suja Priyadharsini,S.Athinarayanan
International Journal of Multimedia & Its Applications , 2010,
Abstract: In this paper the background detection in images in poor lighting can be done by the use ofmorphological filters. Lately contrast image enhancement technique is used to detect the background inimage which uses Weber’s Law. The proposed technique is more effective one in which the backgrounddetection in image can be done in color images. The given image obtained in this method is very effectiveone. More enhancement can be obtained while comparing the results. In this technique compresseddomain enhancement has been used for better result.
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