检索结果-南通市图书馆

International Journal of Minerals,Metallurgy and Materials 2022年第6期29卷 1305-1305页

作者： Jafari, Hassan tehrani, Amir Houshang Mojiri Heydari, Mahsa Materials Engineering Department Faculty of Materials Engineering and Interdisciplinary Science Shahid Rajaee Teacher Training University Tehran Iran

Erratum to:International Journal of Minerals,Metallurgy and Materials Volume 29,Number 3,March 2022,Page 490 https://***/10.1007/s12613-021-2275-5 The original version of this article unfortunately contained a *** author’s name in the original version is incorrect,which is:Hassan Jafari,Amir Houshang Mojiri tehrani,Mojiri tehrani,and Mahsa Heydari The correct version is given below:Hassan Jafari,Amir Houshang Mojiri tehrani,and Mahsa Heydari The original version PDF file has been replaced by the corrected version PDF file.

关键词： microstructure corrosion alloy

Normal Crossings Degenerations of Symplectic Manifolds

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Peking Mathematical Journal 2019年第3期2卷 275-351页

作者： Mohammad Farajzadeh tehrani Aleksey Zinger Simons Center for Geometry and Physics Stony Brook UniversityStony BrookNY 11794USA Department of Mathematics The University of IowaIowa CityIA 52242USA Department of Mathematics Stony Brook UniversityStony BrookNY 11794USA

We use local Hamiltonian torus actions to degenerate a symplectic manifold to a normal crossings symplectic variety in a smooth one-parameter *** construction,motivated in part by the Gross-Siebert and ***’s programs,contains a multifold version of the usual(two-fold)symplectic cut construction and in particular splits a symplectic manifold into several symplectic manifolds containing normal crossings symplectic divisors with shared irreducible components in one step.

关键词： symplectic manifold irreducible

Solution to Polynomial Equations, a New Approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics 2020年第2期11卷 53-66页

作者： Fleur T. tehrani School of Engineering and Computer Science California State University Fullerton CA USA

A new approach for solving polynomial equations is presented in this study. Two techniques for solving quartic equations are described that are based on a new method which was recently developed for solving cubic equations. Higher order polynomial equations are solved by using a new and efficient algorithmic technique. The proposed methods rely on initially identifying the vicinities of the roots and do not require the use of complicated formulas, roots of complex numbers, or application of graphs. It is proposed that under the stated conditions, the methods presented provide efficient techniques to find the roots of polynomial equations.

关键词： Polynomial Solutions Quartic Equations Computer Algorithms

Effect of BDNF and Adipose Derived Stem Cells Transplantation on Cognitive Deficit in Alzheimer Model of Rats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Behavioral and Brain Science 2013年第1期3卷 156-161页

作者： Parvin Babaei Bahram Soltani tehrani Cellular and Molecular Research Center Guilan University of Medical Science Rasht Iran Department of Pharmacology Guilan University of Medical science Rasht Iran

In this study, the potential for recovery mediated by co-treatment of brain-derived neurotrophic factor (BDNF) and adipose tissue derived stem cells (ASCs) on functional recovery after Ibotenic acid (Ibo) lesion of the nucleus basalis magnocellularis (NBM) was examined. Ibotenic acid was injected bilaterally into the NBM of experimental rats, then the animals received treatments as follows: ASCs (500 × 103), BDNF (5 ug/ul) and a combination of BDNF and ASCs. Two months after the treatment, cognitive recovery was assessed by the Morris water-maze. These results showed that ASCs transplantation may have therapeutic value in disease and conditions that result in memory loss, and co-treatment with BDNF doesn’t offer more efficacious cognitive function.

关键词： Alzheimer’s Disease Adipose Stem Cells Brain-Derived Neurotrophic Factor Learning and Memory

Cryotherapy in Ophthalmology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Ophthalmology 2013年第4期3卷 103-117页

作者： Shandiz tehrani Frederick W Fraunfelder Casey Eye Institute Oregon Health & Science University Portland USA Casey Eye Institute Oregon Health & Science University Portland USA.

Cryogens have been used to freeze living tissue for the purpose of treating benign and malignant lesions. Within the last century, ophthalmologists have found cryotherapy to be useful in treating a variety of ocular pathologies. Here, we review the history of cryotherapy, its introduction to the field of ophthalmology, its proposed mechanism of action, and its current applications in treating surface and intraocular eye disease.

关键词： Cryotherapy Cryosurgery Cryogenic Surgery Cryoprobe Cryospray Liquid Nitrogen Surface Eye Disease

Shedding Light on Non Binding Constraints in Linear Programming: An Industrial Application

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Operations Research 2018年第1期8卷 50-61页

作者： Alireza tehrani Nejad Moghaddam Thibault Monier Energy Economist 22 Rue d’arcueil Paris France Energy Economist 10 Rue Mathis Paris France

In Linear Programming (LP) applications, unexpected non binding constraints are among the “why” questions that can cause a great deal of debate. That is, those constraints that are expected to have been active based on price signals, market drivers or manager’s experiences. In such situations, users have to solve many auxiliary LP problems in order to grasp the underlying technical reasons. This practice, however, is cumbersome and time-consuming in large scale industrial models. This paper suggests a simple solution-assisted methodology, based on known concepts in LP, to detect a sub set of active constraints that have the most preventing impact on any non binding constraint at the optimal solution. The approach is based on the marginal rate of substitutions that are available in the final simplex tableau. A numerical example followed by a real-type case study is provided for illustration.

关键词： Linear Programming Solution Interpretation Non Binding Constraint Decision Support

Ivermectin as an adjunct treatment for hospitalized adult COVID-19 patients: A randomized multi-center clinical trial

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2021年第6期14卷 266-273页

作者： Morteza Shakhsi Niaee Peyman Namdar Abbas Allami Leila Zolghadr Amir Javadi Amin Karampour Mehran Varnaseri Behzad Bijani Fatemeh Cheraghi Yazdan Naderi Fatemeh Amini Masoumeh Karamyan Mohammad Jafar YadYad Ramin jamshidian Nematollah Gheibi Sciences and Technology Park QazvinIran Department of Surgery Qazvin University of Medical SciencesQazvinIran Department of Infectious Diseases Clinical Research Development UnitBouAliSina HospitalQazvin University of Medical SciencesQazvinIran Department of Chemistry Imam Khomeini International University QazvinIran Department of Social Sciences School of Medicine Qazvin University of Medical SciencesQazvinIran Infectious and Tropical Diseases Research Center Ahvaz Jundishapur University of Medical SciencesAhvazIran Department of Infectious Diseases Qazvin University of Medical SciencesQazvinIran Cellular and Molecular Research Center Research Institute for Prevention of Non-Communicable DiseasesQazvin University of Medical SciencesQazvinIran Department of Persian Medicine School of MedicineShiraz University of Medical SciencesShirazIran

Objective: To evaluate different doses of ivermectin in adult patients with mild COVID-19 and to evaluate the effect of ivermectin on mortality and clinical ***: A randomized, double-blind, placebo-controlled, multicenter clinical trial was performed at five hospitals. A total of 180 mild hospitalized patients with COVID-19 confirmed by PCR or chest image tests were enrolled and allocated to six arms including hydroxychloroquine 200 mg twice per day, placebo plus hydroxychloroquine 200 mg twice per day, single dose ivermectin(200 μg/kg), three low interval doses of ivermectin(200, 200, 200 μg/kg), single dose ivermectin(400 μg/kg), and three high interval doses of ivermectin(400, 200, 200 μg/kg). The primary endpoint of this trial was all-cause of mortality or clinical recovery. The radiographic findings, hospitalization and low O_2 saturation duration, and hematological variables of blood samples were analyzed. Results: A total of 16.7%(5/30) and 20.0%(6/30) patients died in arms treated with hydroxychloroquine 200 mg twice per day and placebo plus hydroxychloroquine 200 mg twice per day, respectively, and a reduction in mortality rate in patients receiving ivermectin treatment to 0%, 10%, 0% and 3.3% for arms 1-4 were observed. Risk of mortality was also decreased about 15% in the ivermectin treated arms. Conclusions: Ivermectin as an adjunct reduces the rate of mortality, time of low O_2 saturation, and duration of hospitalization in adult COVID-19 patients. The improvement of other clinical parametersshows that ivermectin, with a wide margin of safety, had a high therapeutic effect on COVID-19.

关键词： SARS-COV-2 Ivermectin Randomized controlled trial Dose-respond relationship

Strengthening Injury Surveillance System in Iran

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Traumatology 2011年第6期14卷 348-353页

作者： Seyed Abbas Motevalian Mashyaneh Haddadi Hesam Akbari Reza Khorramirouz Soheil Saadat Arash tehrani Vafa Rahimi-Movaghar School of Public Health Tehran University of Medical Sciences Tehran 11365-3876 Iran （Motevalian SA and tehrani A） Injury Prevention and Safety Promotion Department Disaster and Emergency management Center Ministry of Health and Medical Education Tehran 11365-3876 Iran Student Scientific Research Center （SSRC） Tehran University of Medical Sciences Tehran 11365-3876 Iran Sina Trauma and Surgery Research Center Sina Hospital Tehran University of Medical Sciences Tehran 11365-3876 Iran

Abstract：Objective:To strengthen the current Injury Surveillance System (IS System) in order to better monitor injury conditions,improve protection ways and promote ***:At first we carried out a study to evaluate the frameworks of IS System in the developed *** all the available documents from World Health OrganizationEastern Mediterranean Regional Organization,as well as Minister of Health and Medical Education concerning Iran were *** a national stakeholder's consultation was held to collect opinions and views.A national workshop was also intended for provincial representatives from 41 universities to identify the barriers and limitations of the existing program and further to strengthen injury ***:The evaluation of the current IS System revealed many problems,mainly presented as lack of accurate pre- and post-hospital death registry,need of precise injury data registry in outpatient medical centers,incomplete injury data registry in hospitals and lack of accuracy in definition of variables in injury *** five main characteristics of current IS System including flexibility,acceptability,simplicity,usefulness and timeliness were evaluated as moderate by ***:Major revisions must be considered in the current IS System in *** following elements should be added to the questionnaire:identifier,manner of arrival to the hospital,situation of the injured patient,consumption of alcohol and opioids,other involved participants in the accident,intention,severity and site of injury,side effects of surgery and medication,as well as one month follow-up *** should be collected from 10％ of all hospitals in Iran and analyzed every 3 *** data should be online to be retrieved by researches。

关键词：监测系统伊朗伤害世界卫生组织损伤部位专家评估利益相关者注册表

Monochrome HUD’s Imaging Projector Based on Laser-DMD System

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Physics 2016年第10期7卷 1138-1149页

作者： Sayed Sajjad Mousavi Fard Masood Kavosh tehrani Mehrdad Mehrani College of Opto-Electronics Engineering Malek Ashtar University of Technology (MUT) Shahin Shahr Iran

Design and tolerance of a new head up display’s projector system is reported. It is based on laser-micro display modules. We designed optical diffraction limited modules and some of our novelties were compactness, using common material and spherical lenses in optical design, easy and economical manufacturing process, uniform intensity and minimum aberrations of final image, economical and repairable designed system. Projector magnification is 10.0X and diagonal of image plane is 76.2 mm. ZEMAX software is employed for optical design and tolerance.

关键词： Head-Up Display (HUD) Head Mounted Display (HMD) Deformable Micro Mirror Displays (DMD) Polarizer Beam Splitter (PBS)

Salivary gland antigens of laboratory-bred Phlebotomus sergenti and their immunogenicity in human volunteers in laboratory condition

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2020年第1期13卷 17-23页

作者： Arshad Veysi Ahmad Reza Mahmoudi Mohammad Reza Yaghoobi-Ershadi Mahmood Jeddi-tehrani Yavar Rassi Alireza Zahraei-Ramazani Nasibeh Hosseini-Vasoukolaei Daem Roshani Mahboubeh Fatemi Ali Khamesipour Amir Ahmad Akhavan Zoonoses Research Center Research Institute for Health DevelopmentKurdistan University of Medical sciencesSanandajIran Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehranIran Immunology Research Center Institute of Immunology and Infectious DiseasesIran University of Medical SciencesTehranIran Monoclonal Antibody Research Center Avicenna Research InstituteACECRTehranIran Department of Medical Entomology and Vector Control Health Sciences Research CenterAddiction InstituteMazandaran University of Medical SciencesSariIran Social Determinants of Health Research Center Research Institute for Health DevelopmentKurdistan University of Medical SciencesSanandajIran Center for Research and Training in Skin Diseases and Leprosy Tehran University of Medical SciencesTehranIran

Objective:To investigate Phlebotomus(P.)sergenti Parrot,1917(Diptera:Psychodidae)salivary gland antigens and their immune response in ***:Human volunteers were exposed to sand flies’bites in the laboratory,and following each exposure the size of induration was *** mean protein concentration of salivary gland lysate and specific *** saliva IgG was *** fly salivary proteins were separated by SDS-PAGE and their immunoreactivity was examined by Western blotting ***:Individuals exposed to *** salivary gland lysate for 8 months showed both antibody and delayed type hypersensitivity responses,although exposure for one month did not provoke any immune *** trend of antibody fluctuated during the exposure time and dropped by the end of antigen *** mean protein content was(0.36±0.08)μg in each pair salivary *** gland lysate showed 11 to 12 major protein bands and 3 to 6 of them were ***:Our study showed that the salivary gland components of *** provoked both cellular and humoral immune responses in ***,there are some immunogenic proteins in *** saliva which could be subjected for further investigation as vector-based vaccine candidate/s against anthroponotic cutaneous leishmaniasis.

关键词： Phlebotomus sergenti Antibody response Delayed-type hypersensitivity Human Salivary gland antigen