oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2018 ( 2 )

2017 ( 578 )

2016 ( 951 )

2015 ( 13705 )

自定义范围…

匹配条件: “M Soleimani” ,找到相关结果约400029条。
列表显示的所有文章,均可免费获取
第1页/共400029条
每页显示
Impaired Pancreatic Ductal Bicarbonate Secretion in Cystic Fibrosis
Soleimani M
JOP Journal of the Pancreas , 2001,
Abstract: Patients with cystic fibrosis demonstrate a defect in HCO(3)(-) secretion by their pancreatic duct cells. However, attempts toward understanding or correcting this defect have been hampered by a lack of knowledge regarding the cellular and molecular mechanisms mediating HCO(3)(-) transport in these cells. Recent functional and molecular studies indicate a major role for a basolateral electrogenically-driven Na(+):HCO(3)(-) cotransporter (NBC1) in mediating the transport of HCO(3)(-) into the duct cells. The HCO(3)(-) exits at the lumen predominantly via two recently discovered apical HCO(3)(-) transporters. cAMP, which mediates the stimulatory effect of secretin on pancreatic ductal HCO(3)(-) secretion, potentiates the basolateral Na(+):HCO(3)(-) cotransporter due to generation of a favorable electrogenic gradient as a result of membrane depolarization by Cl(-)-secreting cystic fibrosis transmembrane conductance regulator (CFTR). Two apical HCO(3)(-) transporters drive the secretion of bicarbonate into the pancreatic duct lumen. Molecular and functional studies indicate that CFTR upregulates the expression of these two apical HCO(3)(-) transporters. In addition, CFTR may also upregulate the expression of certain water channels and facilitate the secretion of fluid into the duct lumen. In brief, current research suggests that the defect in pancreatic HCO(3)(-) secretion in patients with cystic fibrosis is multifactorial and involves the alteration in the function/expression of transporters at the basolateral and luminal membrane domains of the duct cells.
Investigation of Sorption Isotherm Curves for Corn Seed (Three Way Cross 647and Single Cross 704)
M. Soleimani,M. Shahedi
Journal of Science and Technology of Agriculture and Natural Resources , 2006,
Abstract: Isotherm curves are useful for the designing of dryer as well as controling of the seed moisture content during storage and drying process. To study the curves, this research was performed on the basis of two factorial experiments including three factors: (1) hybrid at two levels (Three Way Cross 647 and Single Cross 704); (2) temperature at 6 levels (from 5 to 55°C); and (3) Relative Humidity (RH) at 5 levels (from 10 to 90 percent) for the analysis of the adsorption and desorption phenomena. For maintaining RH at the above mentioned ranges, glycerol solutions with different concentrations were used. The results showed that the relationship between solutions concentration and their RH was non-linear and somewhat related to temperature. Also, statistical analysis displayed that for 3 factors of tepmerature , RH and hybrid, the effects on Equilibrium Moisture Content (EMC) in both adsorption and desorption phenomena were significant at α=1%. Comparisons of means showed that hybrid 704 had higher EMC values than did hybrid 647 under the same conditions, in other words, hybrid 704 produced lower aw than did hybrid 647 at the same moisture content. Fitting experimental values on non-linear models (Henderson, Chung-Pfost and Oswin) showed Oswin as the best model for adsorption and desorption curves for hybrid 704 and also for adsorption curve for hybrid 647 , but the best model for desorption curve for hybrid 647 was Chung-Pfost.
HOUSE DUST MITE CONTAMINATION IN HOTELS AND INNS IN BANDAR ABBAS, SOUTH OF IRAN
M. Soleimani, J. Rafinejad
Iranian Journal of Environmental Health Science & Engineering , 2008,
Abstract: House dust mites have been shown to be strongly associated with allergic respiratory diseases such as, bronchial asthma, rhinitis and atopic dermatitis in the world. The climatic conditions of Bandar-Abbas, which is located in a coastal area and has a humid subtropical climate, provide a suitable place to proliferate mites. The aim of this study was to determine the contamination rate and analyze the house dust mite fauna in hotels and inns in Bandar-Abbas that had not been investigated previously. In this study 6 hotels and 6 inns were selected randomly in six areas of Bandar-Abbas. Two dust samples were collected from each place with a vacuum cleaner. One square meter of carpets and mattresses were vacuumed for a period of 1 min. Then the samples were cleared in lactic acid and then mites were mounted in Hoyer's medium for study and identification. A total of 2644 mites were collected and identified. The major mite family was Pyroglyphidae (98%). Dermatophagoides pteronyssinus was the most frequent and most numerous species recorded, occurring in 91% of samples examined and forming 88% of the Pyroglyphidae and 86% of the total mite populations. The family Cheyletidae was less commonly found with Cheyletus malaccensis (2%). Most of the mites were isolated from the carpets (57.5%), and a smaller number from mattresses (42.5%). Mites were present in 96% of the dust samples. Results revealed that all inns and 83% of hotels were contaminated by more than one species of mite and 34% of them had a population of more than 100 mites /g dust. This rate of contamination can be a major risk factor in asthma and other respiratory allergic diseases
Effect of Soil Solarization on the Population Dynamics of Fusarium Propagules in Hamadan Climatic Conditions
M. J. Soleimani
Journal of Science and Technology of Agriculture and Natural Resources , 2005,
Abstract: Some of the field crops are severely affected by the Fusarium foot and root-rot in the west of Iran, Hamadan. Pathogenic Fusarium species are potentially severe destructive diseases and could be a major limiting factor for the cereals and potato production in this province. The purpose of this study was to determine the possible effect of soil solarization on the population dynamics of Fusarium spp. The propagules under Hamadan climatic conditions. Pre-tarping irrigation to achieve the field capacity was carried out prior to the various treatments including the black and transparent polyethylene plastic sheets. The experiment was performed in a completely randomized block design with three replicates, in a naturally infested soil. After three, five and eight weeks, soil samples were collected from different soil depths in appropriate plots. The propagule numbers of Fusaria were counted through dilution plate method using selective Nash & Synder and PDA media. The results indicated that the propagules of Fusarium in treated soils (five and eight weeks treatments) were significantly decreased as compared with the three week treated and untreated control plots. Better results obtained with the transparent sheets after eight weeks, followed by treatments with five weeks of mulching. Accordingly, the hydrothermal control of the Fusarium foot and the root-rot disease seem to be effective under the cool and temperate area of Hamadan.
Multi-level reputation signals in service industries in Latin America
Newburry,William; Soleimani,M. Abrahim;
Innovar , 2011,
Abstract: this study uses signaling theory to investigate industry -firm- and individual-level determinants of individual-level corporate reputation assessments in the context of latin america. in a hierarchical linear model, we test our theory using 76,419 individual evaluations of 80 companies in five latin american countries collected by the reputation institute in conjunction with the foro de reputación corporativa. results show that across our latin american sample, reputations of firms in the telecom and energy industries are significantly lower than those of manufacturing firms. additionally, we find consistent evidence across marginalized groups (e.g., women, lower social class, education and income) that they assess telecom industry reputations relatively higher than their less marginalized counterparts do. results are mixed with regards to marginalized group assessments of firms from other service industries. additionally, counter to expectations, we do not find evidence that firm size or financial performance impact reputation assessments.
The evaluation of functioning thyroid nodules using sodium pertechnetate TC-99m scan in comparison with iodine-131
Saghari M,Soleimani Abyaneh H
Tehran University Medical Journal , 1993,
Abstract: Thyroid scintigraphy has been helpful in detecting and evaluation of thyroid nodules. Sodium pertechnetate Tc-99m is the most commonly used radionuclide for thyroid imaging because of its general availability, favorable dosimetric characteristics and low cost. But, there are reports of occasional disparity in isotope uptake in lesions compared with radioiodide. In order to determine percentage and clinical significance of this disparity, we screened 101 patients with solitary functioning nodules using sodium pertechnetate TC-99m in comparison with subsequent Iodine-131 scan in research institute for nuclear medicine. We conclude that sodium pertechnetate TC-99m is a reliable radiotracer for the detection and evaluation of thyroid nodules and there is no need for the subsequent Iodine-131 scan.
Vanadium Recovery from Oil Refinery Sludge Using Emulsion Membrane Technique
Nabavinia M.,Soleimani M.,Kargari A.
International Journal of Chemical and Environmental Engineering , 2012,
Abstract: Cleaning of raw oil tanks produced huge quantities of oil sludge which is a potentially hazardous waste product. In order to reduce the environmental impact due to land disposal of this sludge and to valorize this waste material, many researches in the world pay considerable attention to removal of heavy metals from oil sludge. The aim of this work was to investigate Emulsion Liquid Membrane (ELM) technique for vanadium recovery from oil refinery sludge in two stages. The process involves contact of fly ash of this sludge with a sulfuric acid solution followed by purification and enrichment with ELM process. The experimental data illustrated that more than 65% of vanadium in fly ash can be extracted in one stage of leaching by sulfuric acid (96%) with liquid volume ratio to solid weight 0.1 l/g at 65oC. Under the optimum operating conditions of ELM technique, more than 86% of vanadium was extracted in 1 hr at ambient temperature. It was found that ELM technique could be effectively used in the recovery of different metals from oil refinery sludge.
An Order on Subsets of Cone Metric Spaces and Fixed Points of Set-Valued Contractions
M. Asadi,H. Soleimani,S. M. Vaezpour
Fixed Point Theory and Applications , 2009, DOI: 10.1155/2009/723203
Abstract: In this paper at first we introduce a new order on the subsets of cone metric spaces then, using this definition, we simplify the proof of fixed point theorems for contractive set-valued maps, omit the assumption of normality, and obtain some generalization of results.
The prevalence of drug resistance in patients with HIV/AIDS attending to Imam Khomeini Hospital in Tehran, Iran during 2008-2009: letter to editor
Hajabdulbaghy M,Soodbakhsh A,Soleimani A
Tehran University Medical Journal , 2011,
Abstract: "nThe combinations of antiretroviral (ARV) drugs have proven effective in controlling the progression of AIDS, but these benefits can be compromised by drug resistance. Thus, drug-resistance testing has become an important tool in the management of HIV-infected individuals.1 Drug resistance develops when mutations in the HIV virus proteins occur due to amino acid substitutions.2 Drug resistance testing is done in two ways: phenotypic test and genotypic test.3 In the first method, virus proliferation is measured in the presence of different concentrations of the drugs. In the second, the genetic structure of viral genome sequences are investigated.4 Although, the first case of HIV infection in Iran was identified 23 years ago (1988), there is still no study published on its drug resistance. The main purpose of this study was to determine the prevalence of drug resistance mutations in patients with HIV/AIDS attending Imam Khomeini Hospital in Tehran. The secondary objectives of the study were to determine the frequency of drug resistance to specific drugs such as nucleoside reverse transcriptase inhibitors (NRTIs), non-nucleoside reverse transcriptase inhibitors (NNRTIs) and protease inhibitors (PI). We collected plasma samples from 25 patients with HIV/AIDS and immunological failure. After the extraction of the viral RNA from plasma, genomic sequencing was performed. Finally, the data for determining drug resistance were analyzed by the Stanford HIV Drug Resistance Database (http://hivdb.stanford.edu) software. Out of the 25 patients under study, 20 were male (80%) and five were female (20%). Routes of HIV transmission were: 56% by needle sharing among injecting drug users (IDUs), 20% through sexual contact, 12% through blood transfusions and 12% by unknown routes. High-level drug resistance for ARV drugs included: 24% to NRTIs, 28% to NNRTIs and zero percent to PI drugs. In addition, 15 patients had been infected with genotype A and 10 patients with genotype B of the virus subtypes. More than half of the patients (56%) had HCV co-infection and 44% had prison histories. Overall, the prevalence of drug resistance was 28% which is lower to those of other countries which range from 30% to 90%. Among NRTI drugs, 24% had high-level drug resistance to Lamivudin while no resistance was witnessed against Tenofovir. Among NRTI drugs, 8% had high-level and 68% had low-level resistance to Stavudine. Among NNRTI drugs, 24% and 28% of the patients showed high-level resistance to Efavirenze and Nevirapine, respectively, although the resistance rate in the present stud
Isolation of mesenchymal stem cells from mouse bone marrow: frequent medium change method
Soleimani M, Nadri S, Izadpanah R
Tehran University Medical Journal , 2008,
Abstract: "nBackground: MSCs have been isolated from a variety of mammals by the plastic adherence method. However, this method can be problematic due to the unwanted growth of hematopoietic cells and non-MSCs. The potential of MSCs to differentiate along multiple lineages is the key to the identification of stem cell populations in the absence of molecular markers. In the present study, we describe a homogeneous population of MSCs from mouse bone marrow isolated using an improved plastic adherence method that employs frequent medium change (FMC) at the initial hours of harvested bone marrow cell culture."n"nMethods: Balb/c mice were sacrificed and whole bone marrow cells were aspirated from the femur and tibia and then cultivated in six-well plates. After 3-4 hours of culture, old medium was removed and fresh medium was added. FMC was performed every eight hours over a 72 hour period. When primary cultures became nearly confluent, the first passage was performed. These cells were then used for further examination. To investigate their mesenchymal nature, the cells were allowed to differentiate into mesenchymal lineages and examined at each passage up to the tenth passage for surface antigens by flow cytometry."n"nResults: We achieved purified populations of fibroblast-like cells in the two weeks after culture initiation. The cells were capable of differentiating into osteocytes and adipocytes. Isolated MSCs were reactive to the CD44, Sca-1, and CD90 cell surface markers. MSCs were negative for hematopoietic surface markers such as CD34, CD11b, CD45, CD31, CD106, CD117 and CD135."n"nConclusions: This protocol provides an efficient isolation of homogeneous populations of MSCs from mouse bone marrow.
第1页/共400029条
每页显示


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