维普中文期刊产品整合服务
115篇 您的检索式:作者名="Sattari"
    题名 作者 年代 出处 被引量
1Prediction of uniaxial compressive strength and modulus of elasticity for Travertine samples using regression and artificial neural networks显示文摘Uniaxial Compressive Strength (UCS) and modulus of elasticity (E) are the most important rock parameters required and determined for rock mechanical studies in most civil and mining projects. In this study, two mathematical methods, regression analysis and Artificial Neural Networks (ANNs), were used to predict the uniaxial compressive strength and modulus of elasticity. The P-wave velocity, the point load index, the Schmidt hammer rebound number and porosity were used as inputs for both meth-ods. The regression equations show that the relationship between P-wave velocity, point load index, Schmidt hammer rebound number and the porosity input sets with uniaxial compressive strength and modulus of elasticity under conditions of linear rela-tions obtained coefficients of determination of (R2) of 0.64 and 0.56, respectively. ANNs were used to improve the regression re-sults. The generalized regression and feed forward neural networks with two outputs (UCS and E) improved the coefficients of determination to more acceptable levels of 0.86 and 0.92 for UCS and to 0.77 and 0.82 for E. The results show that the proposed ANN methods could be applied as a new acceptable method for the prediction of uniaxial compressive strength and modulus of elasticity of intact rocks.DEHGHAN S SATTARI Gh CHEHREH CHELGANI S ALIABADI M A 2010Mining Science and Technology2010,20,1:18
2The aflatoxin B1 isolating potential of two lactic acid bacteria显示文摘Objective:To determine lactic acid bacteria's capability to enhance the process of binding and isolating aflatoxin B1 and to utilize such lactic acid bacteria as a food supplement or probiotic products for preventing absorption of aflatoxin Bl in human and animal bodies.Methods:In the present research,the bacteria were isolated from five different sources.For surveying the capability of the bacteria in isolating aflatoxin Bl,ELISA method was implemented,and for identifying the resultant strains through 16S rRNA sequencing method,universal primers were applied.Results:Among the strains which were isolated,two strains of Lactobacillus pentosus and Lactobacillus beveris exhibited the capability of absorbing and isolating aflatoxin Bl by respectively absorbing and discharging 17.4%and 34.7%of the aforementioned toxin existing in the experiment solution.Conclusions:Strains of Lactobacillus pentosus and Lactobacillus beveris were isolated from human feces and local milk samples,respectively.And both strains has the ability to isolate or bind with aflatoxin Bl.Adel Hamidi Reza Mirnejad Emad Yahaghi Vahid Behnod Ali Mirhosseini Sajad Amani Sara Sattari Ebrahim Khodaverdi Darian 2013Asian Pacific Journal of Tropical Biomedicine2013,3,9:8
3Reciprocal impact of host factors and Helicobacter pylori genotypes on gastric diseases显示文摘AIM: To assess the impact of Helicobacter pylori(H. pylori) genotypes and patient age and sex on the development of gastric diseases.METHODS: H. pylori-infected patients(n = 233) referred to the endoscopy unit at Tehran University of Medical Sciences(Tehran,Iran) were diagnosed with chronic gastritis(CG),gastric ulcer(GU),or duodenal ulcer(DU). Brucella blood agar was used for biopsy cultures and H. pylori isolation under microaerobic conditions. H. pylori isolates were confirmed with biochemical tests and through amplification of the 16 S r RNA gene. DNA was extracted from fresh cultures of the H. pylori isolates and used for amplification of vac A alleles and the cag A gene. Statistical analysis was performed to determine the association between H. pylori genotypes,age(< 40 years vs > 40 years) and sex of the patient,and gastric diseases.RESULTS: CG was the most prevalent gastric disease(113/233; 48.5%),compared to GU(64/233; 27.5%)and DU(56/233; 24%). More patients were male,and gastric diseases were more frequent in patients > 40 years(P < 0.05). The percentage of CG and GU patients that were male and female did not show a significant difference; however DU was more common in males(P < 0.05). Interestingly,a diagnosis of CG in patients > 40 years was more common in females(18.5%) than males(11.6%)(P = 0.05),whereas a diagnosis of GU or DU in patients > 40 years was more frequent in males(14.6% vs 10.7% and 12.4% vs 4.3%,respectively). Overall,genotyping of the H. pylori isolates revealed that the vac A s1(82%),vac A m2(70%),and cag A+(72.5%) alleles were more frequent than vac A s2(18%),vac A m1(29.2%),and cag A-(all P < 0.05). The vac A s1m2 cag A+ genotype was the most prevalent within the three disease groups. vac A s1m2 frequency was 56.2% with a similar occurrence in all diagnoses,while vac A s1m1 appeared more often in DU patients(33.9%). A genotype of vac A s2m2 occurred in 15% of isolates and was more common in CG patients(21.2%); vac A s2m1 was the least common genotype(3%). The vac A s1 allele was found to be a risk factor for DU,vac A s2 for CG,and vac A s1 and vac A s2 for GU(all P < 0.05). The vac A s2m2 genotype was associated with the development of CG and GU compared to DU(P < 0.05). No correlation was found between vac A m or cag A and gastric diseases.CONCLUSION: The outcome of H. pylori infection is the result of interaction between bacterial genotypes and the age and sex of infected individuals.Sahar Honarmand-Jahromy Farideh Siavoshi Reza Malekzadeh Taher Nejad Sattari Saeid Latifi-Navid 2015World Journal of Gastroenterology2015,21,31:5
4Effects of the deep rolling process on the surface roughness and properties of an Al-3vol%SiC nanoparticle nanocomposite fabricated by mechanical milling and hot extrusion显示文摘Deep rolling is one of the most widely used surface mechanical treatments among several methods used to generate compressive residual stress. This process is usually used for axisymmetric components and can lead to improvements of the surface quality, dimensional accuracy, and mechanical properties. In this study, we deduced the appropriate deep rolling parameters for Al-3vol%Si C nanocomposite samples using roughness and microhardness measurements. The nanocomposite samples were fabricated using a combination of mechanical milling, cold pressing, and hot extrusion techniques. Density measurements indicated acceptable densification of the samples, with no porosity. The results of tensile tests showed that the samples are sufficiently strong for the deep rolling process and also indicated near 50% improvement of tensile strength after incorporating Si C nanoparticle reinforcements. The effects of some important rolling parameters, including the penetration depth, rotation speed, feed rate, and the number of passes, on the surface quality and microhardness were also investigated. The results demonstrated that decreasing the feed rate and increasing the number of passes can lead to greater surface hardness and lower surface roughness.Sajjad Sattari Amir Atrian 2017International Journal of Minerals,Metallurgy and Materials2017,24,7:3
5Precision micro-mechanical components in single crystal diamond by deep reactive ion etching显示文摘The outstanding material properties of single crystal diamond have been at the origin of the long-standing interest in its exploitation for engineering of high-performance micro-and nanosystems.In particular,the extreme mechanical hardness,the highest elastic modulus of any bulk material,low density,and the promise for low friction have spurred interest most notably for micro-mechanical and MEMS applications.While reactive ion etching of diamond has been reported previously,precision structuring of freestanding micro-mechanical components in single crystal diamond by deep reactive ion etching has hitherto remained elusive,related to limitations in the etch processes,such as the need of thick hard masks,micromasking effects,and limited etch rates.In this work,we report on an optimized reactive ion etching process of single crystal diamond overcoming several of these shortcomings at the same time,and present a robust and reliable method to produce fully released micro-mechanical components in single crystal diamond.Using an optimized Al/SiO_(2) hard mask and a high-intensity oxygen plasma etch process,we obtain etch rates exceeding 30μm/h and hard mask selectivity better than 1:50.We demonstrate fully freestanding micro-mechanical components for mechanical watches made of pure single crystal diamond.The components with a thickness of 150μm are defined by lithography and deep reactive ion etching,and exhibit sidewall angles of 82°–93°with surface roughness better than 200 nm rms,demonstrating the potential of this powerful technique for precision microstructuring of single crystal diamond.Adrien Toros Marcell Kiss Teodoro Graziosi Hamed Sattari Pascal Gallo Niels Quack 2018Microsystems & Nanoengineering2018,4,1:2
6Field Emitters Based on Porous Aluminum Oxide Templates 显示文摘Davydov D N Sattari P A Aimawlaw I D 1999Journal of Applied Physics1999,86,7:1
7Comparative genetic analysis and molecular mapping of fertility restoration genes for WA, Dissi, and Gambiaca cytoplasmic male sterility systems in rice显示文摘Majid Sattari Arumugam Kathiresan Glenn B. Gregorio Sant S. Virmani 2008Euphytica2008,,3:1
8Pharmacokinetics of celecoxib in the presence and absence of interferon-induced acute inflammation in the rat:application of a novel HPLC assayp显示文摘Guirguis M S Sattari S Jamali F 2001J Pharm Sci2001,4,1:1
9Development and use of a two-gene marker-aided selection system for fertility restorer genes in rice显示文摘Majid Sattari Arumugam Kathiresan Glenn B. Gregorio Jose E. Hernandez Tamerlane M. Nas Sant S. Virmani 2007Euphytica (-)2007,,1:1
10Synthesis and in vitro Antifungal and Cytotoxicity Evaluation of Thiazolo-4H-1,2,4-triazoles and 1,2,3-Thiadiazolo-4H-1,2,4- triazoles显示文摘JALILIAN A R SATTARI S BINESHMARVASTI M 2000Arch Pharm Pharm Med Chem2000,333,:1
11Evidence of absorption rate dependency of ibuprofen inverseon in the rat显示文摘Sattaris Janali F 1994Chirality1994,6,5:1
12Residual soil phosphorus as the missing piece in the global phos- phorus crisis puzzle 显示文摘Sattari S Z Bouwman A F Giller K E 2012Proceedings of the National Academy of Sciences2012,109,16:1
13In vivo induction of necrosis in mice fibrosareoma via intravenous injection of type B staphylococcal enterotoxin 显示文摘Fooladi AAI Sattari M Hassan ZM 2008Biotechnol Lett2008,30,12:1
14A parametric study on radiant floor heating system performance显示文摘Sattari S Farhanieh B 2006Renewable Energy2006,31,:1
15Spontaneous he- mothorax during general anesthesia显示文摘Parikh BR Sattari RJ Shariati NM 2009J Anesth2009,23,1:1
16Seroprevalence of bovine leptospiral antibodies by microscopic agglutination test in Southeast of Iran显示文摘Objective:To evaluate serological findings of bovine leplospirosis which is a zoonotic disease with worldwide distribution caused by Leptospira interrogans.Methods:One hundred and sixty seven sera were collected from 9 commercial dairy herds in jiroft suburbs,from July to October 2011.Microscopic agglutination test(MAT) was used to evaluates serological findings of bovine leplospirosis in Jiroft suburb dairy farms,Kerman province,Iran.Results:Antibodies were found by MAT at least against one serovar of Leptospira interrogans in29 samples(17.36%) among 167 sera at a dilution 1:100 or higher,and Leptospira pomona was the most prevalent serovar.Positive tilers against more than one serovar were detected in 6 sera of the positive samples.Conclusion:This study is the first report of leplospirosis in Southeast Iran and showed that Leptospira pomona was the most and Leptospira icterohaemorrhagiae the least prevalent serovars in Southeast Iran.Mohammad Khalili Ehsanollah Sakhaee Mohammad Reza Aflatoonian Gholamreza Abdollahpour Saeed Sattari Tabrizi Elham Mohammadi Damaneh Sajad Hossini-nasab 2014Asian Pacific Journal of Tropical Biomedicine2014,4,5:1
17Numerical simulation of trichel pulses in a negative corona discharge in air显示文摘Sattari P Castle G S P Adamiak K 2011IEEE Transactions on Industry Applications2011,47,4:1
18Influence of welding sequence on welding distortions in pipes 显示文摘Sattari F I Javadi Y 2008International Journal of Pressure Vessels and Piping2008,85,:1
19A parametric study on radiant floor heating system performance 显示文摘Sattari S Farhanieh B 2006Renewable Energy2006,,31:1
20Comparative genetic analysis and molecular mapping of fertility restoration genes for WA, Dissi, and Gambiaca cytoplasmic male sterility systems in rice显示文摘Majid Sattari Arumugam Kathiresan Glenn B. Gregorio Sant S. Virmani 2008Euphytica2008,,3:1
返回顶部 每页显示:
共6页 首页 上一页 第1页 下一页 末页 /6 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费