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56篇 您的检索式:作者名="Houshang"
    题名 作者 年代 出处 被引量
1Clinical features of hepatopulmonary syndrome in cirrhotic patients显示文摘瞄准:评估频率,临床并且帕拉肝肺症候群(HPS ) 并且到的临床的特征在伊朗在病人在这症候群的诊断决定他们的预兆的价值。方法:54 个肝脏硬化症的病人经历了对比由二位心脏病专家检测肺内、心内的分流的提高的回响心动描记法。动脉的血氧, O (2 ) 坡度(A-a ) 和正统说法被气体(ABG ) 测试的动脉的血测量。为 HPS 的诊断标准积极的病人被定义为表明肺内的动脉的膨胀的临床的 HPS 盒子和那些,但是另外的标准(动脉的血血氧不足) 都没被定义为 lHPS 盒子。HPS 频率,敏感,积极、否定的预兆的价值临床并且帕拉临床的特征被学习。结果:十(18.5%) 并且七(13%) 盒子分别地有临床、无临床症状的 HPS。最普通的病原学是肝炎 B。呼吸困难(100%) 和青紫(90%) 是最流行的临床的特征。呼吸困难并且打分别地是最敏感、特定的临床的特征。没有重要关系被发现在之间 HPS 和脾大,腹水,浮肿,黄疸,尿少,和并行的静脉。HPS 在肝炎 B 是更流行的。PaO (2 )< 70 并且动脉牙槽的坡度在 HPS 病人有最高的敏感。正统说法特性是 100% 。结论:与 75% 的否定预兆的价值(NPV ) 与 75% 的积极预兆的价值(PPV ) 和呼吸困难打是在 HPS 的诊断的最好的临床的因素症候群。PaO (2 )< 70 并且 P (A-a ) O (2 )> 30 并且他们的和,是在 HPS 病人的最珍贵的否定、积极的预兆的价值。Amir Houshang MohammadAlizadeh Seyed Reza Fatemi Vahid Mirzaee Manoochehr Khoshbaten Bahman Talebipour Afsaneh Sharifian Ziba Khoram Mohammad Reza Zali Farhad Haj-sheikh-oleslami MasoomehGholamreza-shirazi 2006World Journal of Gastroenterology2006,12,12:12
2Predictive value and main determinants of abnormal features of intraoperative cholangiography during cholecystectomy显示文摘BACKGROUND:The major issue with intraoperative cholangiography (IOC) is whether its diagnostic accuracy for common bile duct (CBD) stones matches that of other diagnostic procedures,and thus,whether it will become a routine diagnostic procedure.The current study aimed to address the main determinants of CBD stone diagnosis in IOC among an Iranian population.METHODS:In a retrospective review database-based study conducted in Taleghani Hospital in Tehran between 2006 and 2008,baseline data and perioperative information of 2060 patients (male to female ratio 542:1518,mean age 53.7 years) who were candidates for cholecystectomy and underwent concomitant IOC for confirming CBD stones were reviewed.The predictive power of this procedure for diagnosis of abnormal biliary ducts with the focus on biliary stones was determined.RESULTS:Overall mortality and morbidity following cholecystectomy in the study population were 0.6% and 2.6%,respectively.Both early mortality and morbidity due to cholecystectomy were higher in male than female.The prevalence of CBD stones in IOC was 3.4% (5.2% in male and 2.8% in female,P=0.008).Among those without gallstones,8.7% had CBD stones and only 3.1% had concomitant gallstones and CBD stones.The main predictors of stone appearance as an abnormal feature of IOC during cholecystectomy were:advanced age (OR=1.022,P=0.001),male gender (OR=1.498,P=0.050),history of abdominal surgery (OR=1.543,P=0.040) and preoperative endoscopic retrograde cholangiopancreatography (OR=5.400,P<0.001).CONCLUSIONS:IOC is a safe and accurate method for the assessment of bile duct anatomy and stones.Therefore,the routine use of IOC within cholecystectomy seems reasonable and is recommended.Shahram Yousefpour Azary Heshmat Kalbasi Ali Setayesh Mirhadi Mousavi Asad Hashemi Mahsa Khodadoostan Mohammad Reza Zali Amir Houshang Mohammad Alizadeh 2011Hepatobiliary & Pancreatic Diseases International2011,10,3:11
3Intra-familial prevalence of hepatitis B virologic markers in HBsAg positive family members in Nahavand, Iran显示文摘AIM: To determine the prevalence of hepatitis B in Nahavand and evaluate the HBsAg positive prevalence in families with a member who was confirmed to have HBV infection.METHODS: This study was performed in two phases. In the first phase, 1 824 subjects in Nahavand city were selected. The interviewers visited the houses of chosen families to fill the questionnaire and take the blood samples.All subjects signed an informed consent before interviews and blood sampling. The samples were evaluated for HBV virologic markers. In the second phase, 115 HBsAg-positive cases were enrolled and evaluated for HBV virologic markers.RESULTS: The prevalence of positive HBsAg in Nahavand was 2.3%. The most frequent relatives of index cases were sons and daughters (32.2% and 23.5% respectively).Twelve (11%) of all family members were HBsAg positive.Fifty (56.2%) were isolated HBsAb positive and only one person (2.5%) was isolated HBcAb positive. The higher rates of HBsAg marker were detected in the brothers (1-25%) and fathers (1-12.5%). The infection rate in husbands and wives of index cases was 10%. Only two (16.7%) of all HBsAg-positive participants reported previous HBV vaccination.CONCLUSION: The prevalence of intra-familial HBV infection is lower in Nahavand of Iran compared to other studies.More attention should be paid to HBV vaccination and risk-lowering activities.Amir Houshang Mohammad Alizadeh Mitra Ranjbar Shahin Ansari Seyed Moayed Alavian Hamid Mohaghegh Shalmani Leila Hekmat Mohammad Reza Zali 2005World Journal of Gastroenterology2005,11,31:8
4Prevalence of hepatitis C virus infection and its related risk factors in drug abuser prisoners in Hamedan-Iran显示文摘AIM: Recent studies in Iran has shown that prevalence of hepatitis C virus (HCV) infection among Iranian prisoners is high, in spite of low HCV seroprevalence in general population.METHODS: This study was carried out in the central prison of Hamedan - Iran, in year 2002. Inmates were interviewed using a standard questionnaire including demographic,imprisonment history and HCV-related risk behaviors items. Thereafter, the sera drawn from the participants were tested for anti-HIV and anti-HCV antibodies.RESULTS: A total number of 427 drug abuser inmates participated in our study. Three hundred and ninety-seven (93%) were men and 30 (7%) were women. Total number of Ⅳ drug abusers (IDA) and non-Ⅳ drug abusers (NIDA)was 149 (34.9%) and 278 (65.1%), respectively. The overall rate of antibody positivity among inmates was 0.9% for HIV and 30% for HCV. Of all IDAs, 31.5% and of NIDAs, 29.1% had serological evidence of HCV infection.CONCLUSION: The seroprevalence of HCV infection among drug abuser prisoners in comparison with the general population in Iran, is very high (30% vs in italics 0.2%).Our results indicate the importance of policies to prevent transmission of HCV infection during and following incarceration.Amir Houshang Mohammad Alizadeh Seyed Moayed Alavian Khalil Jafari Nastaran Yazdi 2005World Journal of Gastroenterology2005,11,26:5
5Generating Adversarial Samples on Multivariate Time Series using Variational Autoencoders显示文摘Classification models for multivariate time series have drawn the interest of many researchers to the field with the objective of developing accurate and efficient models.However,limited research has been conducted on generating adversarial samples for multivariate time series classification models.Adversarial samples could become a security concern in systems with complex sets of sensors.This study proposes extending the existing gradient adversarial transformation network(GATN)in combination with adversarial autoencoders to attack multivariate time series classification models.The proposed model attacks classification models by utilizing a distilled model to imitate the output of the multivariate time series classification model.In addition,the adversarial generator function is replaced with a variational autoencoder to enhance the adversarial samples.The developed methodology is tested on two multivariate time series classification models:1-nearest neighbor dynamic time warping(1-NN DTW)and a fully convolutional network(FCN).This study utilizes 30 multivariate time series benchmarks provided by the University of East Anglia(UEA)and University of California Riverside(UCR).The use of adversarial autoencoders shows an increase in the fraction of successful adversaries generated on multivariate time series.To the best of our knowledge,this is the first study to explore adversarial attacks on multivariate time series.Additionally,we recommend future research utilizing the generated latent space from the variational autoencoders.Samuel Harford Fazle Karim Houshang Darabi 2021IEEE/CAA Journal of Automatica Sinica2021,8,9:4
6Association of promoter polymorphism of the CD14 C (-159) T endotoxin receptor gene with chronic hepatitis B显示文摘AIM: To investigate whether single-nucleotide polymor- phisms in the promoter regions of endotoxin-responsive genes CD14 C (-159) T is associated with chronic hepatitis B. METHODS: We obtained genomic DNA from 80 patients with established diagnosis of chronic hepatitis B and 126 healthy subjects served as a control population. The CD 14 C (-159) T polymorphism was investigated using an allele specific PCR method. RESULTS: Twenty seven percent of chronic hepatitis B patients and 75% of controls were heterozygous for CT genotype. The difference between the chronic hepatitis B and control groups was statistically significant [P < 0.0001; Odds ratio (OR) = 2.887; 95% CI: 1.609-5.178]. Twenty four point six percent of chronic hepatitis B and patients 12.3% of the control group were heterozygous for TT genotype. The difference between groups was not statistically significant (P = 0.256; OR = 0.658; 95% CI: 0.319-1.358). Forty eight point four percent of chronic hepatitis B patients and 12.7% of control were homozy- gote for CC genotype (P < 0.004; OR = 0.416; 95% CI: 0.229-0.755). The frequency of allele C was 61.9% and allele T was 38.1% in hepatitis B patients group. The frequency of allele C was 55.2% and allele T was 44.8% for the control group (P = 0.179; OR = 1.319; 95% CI: 0.881-1.977). CONCLUSION: The TT heterozygous genotype was not a risk factor for chronic hepatitis B. CC homozygote genotype is protective for hepatitis B. Lack of heterozy- gosis of genotype CT is a risk factor for chronic hepatitis B. Alleles C or T were not risk factors for chronic hepatitis B. These findings show the role of a single-nucleotide polymorphism at CD14/-159 on the development ofchronic hepatitis B. Endotoxin susceptibility may play a role in the pathogenesis of chronic hepatitis B.Amir Houshang Mohammad Alizadeh Mitra Ranjbar Mehrdad Hajilooi Farahnaz Fallahian 2006World Journal of Gastroenterology2006,12,35:3
7Guest Editorial for Special Issue on Time Series Classification显示文摘TIME series classification research and applications have recently received a lot of attention.With the rapid advancement of technological devices,time series data are being collected by a wide variety of devices,resulting in a wide range of research and applications.Various fields of studies,ranging from healthcare to weather readings,require time series classification.Activity and action recognition using time series data from fitness trackers are commonly being practiced.Today,a new generation of algorithms and techniques are being used to classify time series data that are extensively available to the research community.For example,recently deep learning techniques that utilize convolutions and recurrent neural networks are being used to classify epileptic seizures from EEG recordings made available at the University of California-Irvine data repository.Houshang Darabi Georgiana Ifrim Patrick Schafer Diego Furtado Silva 2019IEEE/CAA Journal of Automatica Sinica2019,6,6:2
8Drought risk assessment in the western part of Bangladesh显示文摘Shamsuddin Shahid Houshang Behrawan 2008Natural Hazards2008,,3:2
9Effect of extrusion process on microstructure and mechanical and corrosion properties of biodegradable Mg-5Zn-1.5Y magnesium alloy显示文摘The effect of extrusion temperature and ratio on the microstructure, hardness, compression, and corrosion behavior of Mg-5Zn-1.5Y alloy were analyzed in this study. The microstructural observations revealed that the cast alloy consists of α-Mg grains, and Mg3Zn6Y and Mg3Zn3Y2 intermetallic compounds, mostly located on the α-Mg grain boundaries. Extruded alloy at higher temperatures showed coarser grain microstructures, whereas those extruded at higher ratios contained finer ones, although more dynamic recrystalized grains with lower intermetallics were measured at both conditions. Combined conditions of the lower temperature (340°C) and higher ratio (1:11.5) provided higher compressive strengths. However, no significant hardness improvement was achieved. The extrusion process could decrease the corrosion rate of the cast alloy in simulated body fluid for over 80% due to primarily the refined microstructure. The extrusion temperature showed a more pronounced effect on corrosion resistance compared to the extrusion ratio, and the higher the extrusion temperature, the higher the corrosion resistance.Hassan Jafari Amir Houshang Mojiri Tehrani Mojiri Tehrani Mahsa Heydari 2022International Journal of Minerals,Metallurgy and Materials2022,29,3:1
10Water vapor sensitivity of nanosized La ( Co, Mn, Fe) 1 - x (Cu,Pd) xO3 perovskites during NO reduction by C3H6 in the presence of oxygen 显示文摘Zhang Runduo Houshang Alamdari Serge Kaliaguine 2007Applied Catalysis B : Environ- mental2007,72,3:1
11Processing of symmetrical components in time-domain 显示文摘Masoud Karimi-Ghartemani Houshang Karimi 2007IEEE Transaction On Power Systems2007,,2:1
12Oral administration of the purple passion fruit peel extract reduces wheeze and cough and improves shortness of breath in adults with asthma显示文摘Ronald Ross Watson Sherma Zibadi Houshang Rafatpanah Farahzad Jabbari Ramin Ghasemi Javad Ghafari Hadi Afrasiabi Lai Yeap Foo Reza Faridhosseini 2008Nutrition Research2008,,3:1
13Effect of alkali additives over nanocrystalline Co-Cu-based perovskites as catalysts for higher-alcohol synthesis显示文摘NGUYEN T T HASSAN Z N M HOUSHANG A SERGE K 2007J Catal2007,245,2:1
14Survey of wireless indoor positioning techniques and systems显示文摘Hui Liu Houshang Darabi Pat Banerjee 2007IEEE Transactions on Systems Man and Cybernetice-Part C:Applications and Reviews2007,37,6:1
15SCR of NO by propene over nanoscale LaMn1-xCuxO3 perovskites 显示文摘Zhang Runduo Adrian Villanueva Houshang Alamdari 2006Applied Catalysis A : General2006,307,:1
16Numerical simulation of steady natural convection heat transfer in a 3-dimensional single-ended tube subjected to a nanofluid显示文摘Shahi Mina Mahmoudi Amir Houshang Talebi Farhad 2010International Communications in Heat and Mass Transfer2010,,37:1
17A MYB gene from wheat (Triticum aestivum L.) is up-regulated during salt and drought stresses and differentially regulated between salt-tolerant and sensitive genotypes显示文摘Mahdi Rahaie Gang-Ping Xue Mohammad R. Naghavi Houshang Alizadeh Peer M. Schenk 2010Plant Cell Reports2010,,8:1
18Antioxidant status in patients with psoriasis显示文摘Nemati Houshang Khodarahmi Reza Sadeghi Masoud Ebrahimi Ali Rezaei Mansour Asad Vaisi‐Raygani 2014Cell Biochem Funct2014,,:1
19Relationship between temperature trend magnitude, elevation and mean temperature in the Tibetan Plateau from homogenized surface stations and reanalysis data显示文摘Qinglong You Shichang Kang Nick Pepin Wolfgang-Albert Flügel Yuping Yan Houshang Behrawan Jie Huang 2010Global and Planetary Change2010,,1:1
20Sera of patients with thromboangiitis obliterans activated cultured human umbilical vein endothelial cells ( HUVEC s) and changed their adhesive properties显示文摘Bahare Fazeli Houshang Rafatpanah Hassan Ravari Reza Farid Hosseini Jalil Tavakol Afshari Dariush Hamidi alamdari Narges Valizadeh Nasrin Moheghi S. A. Rahim Rezaee 2014Int J Rheum Dis2014,,1:1
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