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Journal of Integrative Agriculture 2012年第11期11卷 1828-1835页

作者： Hamed Zakikhani mohammad RezaArdakani farhad Rejali Majid Gholamhoseini Aydin Khodaei Joghan Aria Dolatabadian Division of Sustainable Agriculture Agricultural Research CenterIslamic Azad University Karaj Branch Soil and Water Research Institute Agronomy Department Faculty of AgricultureTarbiat Modares University

Drought stress is an abiotic stress that imposes serious constraints on plants. The present investigation was carried out to determine the inter-relationship between some physiological attributes of soybeans affected by drought stress and pure isolates ofAzotobacter andAzospirillum. Drought stress and bacterial application increased catalase and glutathione peroxidase activity, whereas drought stress increased superoxide dismutase activity during the pod-filling stage. Abscisic acid and proline levels increased due to drought stress and bacterial application during the flowering stage, whereas total plant nitrogen was enhanced under well-watered conditions when plants were inoculated with bacteria. The close relationship between enzyme activity and drought stress with bacteria indicated that antioxidant enzymes play an important role in alleviating the detrimental effects of water stress. In addition, the enhancement of abscisic acid and proline could be positively linked with drought stress, and drought-induced abscisic acid could induce proline accumulation and the expression of antioxidant enzyme genes.

关键词： abscisic acid Azospirillum Azotobacter proline soybean water stress

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Comparison of different turbulence models in predicting cohesive fluid mud gravity current propagation

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International Journal of Sediment Research 2020年第5期35卷 504-515页

作者： Seyed-mohammad-Kazem Emami Sayed-farhad Mousavi Khosrow Hosseini Hesam Fouladfar Majid mohammadian Faculty of Civil Engineering University of Semnan Iran Water & Power Resources Development Company 3. Department of Civil Engineering University of Ottawa

A numerical study of propagation of cohesive fluid mud gravity currents in the form of lock-exchange was done using the OpenFOAM open source *** Eulerian approach solution for three separate phases was developed by incorporating a rheological model to predict the front position of cohesive fluid mud gravity *** model also simulates features in the complete movement phases including slumping,self-similar,and viscous in which the dynamics of propagation are affected by the balance of viscous and buoyancy forces,and the inertia force is *** influence of using different turbulence models containing sub-grid scale(SGS),modified SGS,detached eddy simulation(DES),delayeddetached eddy simulation(DDES),Launder-R eece-Rodi(LRR),and k-ε models on the accuracy of simulation results was evaluated by comparing with available experimental *** results show that the selection of the proper turbulence model is one of the most important issues for this type of the numerical *** more efficient turbulence model was suggested and tabulated for each stage of propagation and different selected concentrations of 1,045,1,140,and 1,214 g/*** different turbulence models(except k-ε) lead to front propagation dynamic simulation results that are in good agreement with the experimental measurements in the early stage of propagation for low concentrations,only DES,SGS,and modified SGS are able to capture the Kelvin-Helmholtz instability vortex shapes at the dense fluid interface,which is the main characteristic of the gravity current through the slumping *** calculated accuracies of SGS and modified SGS in predicting gravity current propagation for the both self-similar and viscous phases also are slightly better than DES,DDES,and LRR model *** results of this study confirmed the performance and efficiency of the modified SGS model in which the interaction coefficients between phases are calibrated for the numerical modeling of fluid mud

关键词： Gravity current Turbulence model Numerical simulation Cohesive particles Rheology

稻壳灰负载FeCl2·2H2O:一个温和高效的多相催化剂用于Friedlnder杂成环反应合成多取代喹啉(英文)

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催化学报 2013年第12期34卷 2200-2208页

作者： farhad Shirini Somayeh Akbari-Dadamahaleh Ali mohammad‐Khah Department of Chemistry College of Sciences University of Guilan

Rice husk ash was used as a new, green, and cheap adsorbent for FeCl3. Characterization of the obtained reagent showed that rice husk ash supported FeCl2·2H2O was formed. This reagent is efficient at catalyzing the synthesis of multisubstituted quinolines by the Friedl鋘der heteroannulation of o‐aminoaryl ketones with ketones or β‐diketones under mild reaction conditions. This methodology allows for the synthesis of a broad range of substituted quinolines in high yields and with excellent regioselectivity in the absence of a solvent.

关键词： Rice husk ash Supported FeCl2·2H2O Quinolines 2‐Amino benzophenone Solvent‐free Friedlader heteoannulation

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Inkjet Printed Metamaterial Loaded Antenna for WLAN/WiMAX Applications

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Computers, Materials & Continua 2022年第5期71卷 2271-2284页

作者： farhad Bin Ashraf Touhidul Alam Md Tarikul Islam Mandeep Jit Singh Norbahiah Binti Misran mohammad Tariqul Islam Department of Electrical Engineering Polytechnique MontréalMontréalQC H3T 1J4Canada Space Science Centre(ANGKASA) Institute of Climate Change(IPI)Universiti Kebangsaan MalaysiaBangi43600SelangorMalaysia Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaMalaysia

In this paper,the design and performance analysis of an Inkjetprinted metamaterial loaded monopole antenna is presented for wireless local area network(WLAN)and worldwide interoperability for microwave access(WiMAX)*** proposed metamaterial structure consists of two layers,one is rectangular tuning fork-shaped antenna,and another layer is an inkjet-printed metamaterial *** metamaterial layer is designed using four split-ring resonators(SRR)with an H-shaped inner structure to achieve negative-index metamaterial *** metamaterial structure is fabricated on low-cost photo paper substrate material using a conductive inkbased inkjet printing technique,which achieved dual negative refractive index bands of 2.25–4.25 GHz and 4.3–4.6 *** antenna is designed using a rectangular tuning fork structure to operate at WLAN and WiMAX *** antenna is printed on 30×39×1.27 mm3 Rogers RO3010 substrate,which shows wide impedance bandwidth of 0.75 GHz(2.2 to 2.95 GHz)with 2 dB realized gain at 2.4 *** integrating metamaterial structure,the impedance bandwidth becomes 1.25 GHz(2.33 to 3.58 GHz)with 2.6 dB realized gain at 2.4 *** antenna bandwidth and gain have been increased using developed quad SRR based metasurface by 500 MHz and 0.6 dBi ***,the proposed quad SRR loaded antenna can be used for 2.4 GHz WLAN bands and 2.5 GHz WiMAX *** contribution of this work is to develop a cost-effective inject printed metamaterial to enhance the impedance bandwidth and realized the gain of a WLAN/WiMAX antenna.

关键词： Metamaterial epsilon negative antenna split ring resonator WiMAX WLAN

Characteristics of different charge transfer modes in upward flashes inferred from simultaneously measured currents and fields

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High Voltage 2020年第1期5卷 30-37页

作者： Lixia He mohammad Azadifar Quanxin Li Marcos Rubinstein Vladimir A.Rakov Arturo Mediano Davide Pavanello farhad Rachidi Electromagnetic Compatibility Laboratory Swiss Federal Institute of Technology(EPFL)1015 LausanneSwitzerland Department of Atmospheric Physics Nanjing University of Information Science and TechnologyNanjingPeople's Republic of China University of Applied Sciences of Western Switzerland(HES-SO) 1400 Yverdon-les-BainsSwitzerland Department of Electrical Engineering Wuhan UniversityWuhanPeople's Republic of China Department of Electrical and Computer Engineering University of FloridaFloridaUSA Institute of Electronics and Mathematics National Research University Higher School of EconomicsMoscowRussia Department Electronics and Communication Engineering University of ZaragozaZaragozaSpain Institute of Sustainable Energy University of Applied Sciences of Western Switzerland(HES-SO)1950 SionSwitzerland

The authors present an analysis of different charge transfer modes during upward negative *** analysis includes a total number of 94 pulses that occurred during two upward negative flashes recorded at the Säntis *** pulses included 59 mixed-mode(MM)initial continuous current(ICC)pulses,17 M-component-type ICC(M-ICC)pulses,8 returnstroke pulses,and 10 classical M-component(MC)*** is found that the initial stage of the flash is responsible for the largest share of the total charge transferred to the *** results for the electric fields associated with the considered charge transfer modes are presented and *** stroke(RS)and MM pulses were simulated adopting the MTLE model,while MCs and M-ICC pulses were simulated using the guided wave model of Rakov et *** simulated results are shown to be in good agreement with simultaneous records of electric fields measured at a distance of 15 km from the Säntis *** inferred velocities for MCs and M-ICC pulses range from 2.0×10^(7) to 9.0×10^(7) m/s,and the corresponding junction point heights range from 1.0 to 2.0 *** inferred pulse velocities for RSs and MM pulses range from 1.3×10^(8) to 1.65×10^(8) m/*** inferred current attenuation constants of the MTLE model obtained in this study range from 0.3 to 0.8 km,lower than the value of 2 km previously suggested for RSs in downward *** obtained results support the assumption that the mode of charge transfer to the ground giving rise to MM pulses is similar to that of *** results are also in support of the generally assumed similarity between M-ICC pulses and classical MCs.

关键词： flash charge transfer

AFM-compatible microfluidic platform for affinity- based capture and nanomechanical characterization of circulating tumor cells

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Microsystems & Nanoengineering 2020年第1期6卷 1161-1175页

作者： Muhammedin Deliorman farhad K.Janahi Pavithra Sukumar Ayoub Glia Roaa Alnemari Samar Fadl Weiqiang Chen mohammad A.Qasaimeh Division of Engineering New York University Abu DhabiP.O.Box 129188Abu DhabiUAE Mohammed Bin Rashid University of Medicine and Health Sciences P.O.Box 505055DubaiUAE Department of Mechanical and Aerospace Engineering New York UniversityNew YorkNY 10003USA Division of Science New York University Abu DhabiP.O.Box 129188Abu DhabiUAE Department of Biomedical Engineering New York UniversityNew YorkNY 10003USA

Circulating tumor cells(CTCs)carried by the patient’s bloodstream are known to lead to the metastatic spread of *** is becoming increasingly clear that an understanding of the nanomechanical characteristics of CTCs,such as elasticity and adhesiveness,represents advancements in tracking and monitoring cancer progression and *** the present work,we describe a combined microfluidic–atomic force microscopy(AFM)platform that uses antibody–antigen capture to routinely isolate and nanomechanically characterize CTCs present in blood samples from prostate cancer *** introduce the reversible assembly of a microfluidic device and apply refined and robust chemistry to covalently bond antibodies onto its glass substrate with high density and the desired *** a result,we show that the device can efficiently capture CTCs from patients with localized and metastatic prostate cancer through anti-EpCAM,anti-PSA,and anti-PSMA antibodies,and it is suitable for AFM measurements of captured intact *** nanomechanically characterized,CTCs originating from metastatic cancer demonstrate decreased elasticity and increased deformability compared to those originating from localized *** the average adhesion of CTCs to the AFM tip surface remained the same in both the groups,there were fewer multiple adhesion events in metastatic CTCs than there were in their *** developed platform is simple,robust,and reliable and can be useful in the diagnosis and prognosis of prostate cancer as well as other forms of cancer.

关键词： routine diagnosis elasticity

Epidemiological evidence of mosquito-borne viruses among persons and vectors in Iran:A study from North to South

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Virologica Sinica 2022年第1期37卷 149-152页

作者： Abbas Ahmadi Vasmehjani farhad Rezaei mohammad Farahmand Talat Mokhtari-Azad mohammad Reza Yaghoobi-Ershadi Mohsen Keshavarz Hamid Reza Baseri Morteza Zaim Mahmood Iranpour Habibollah Turki mohammad Esmaeilpour-Bandboni Department of Virology School of Public HealthTehran University of Medical SciencesTehran14156446Iran Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehran14156446Iran The Persian Gulf Tropical Medicine Research Center The Persian Gulf Biomedical Sciences Research InstituteBushehr University of Medical SciencesBushehr***Iran Department of Entomology University of ManitobaR3T 2N2Canada Infectious and Tropical Diseases Research Center Hormozgan Health InstituteHormozgan University of Medical SciencesBandar Abbas***Iran School of Nursing Midwifery and ParamedicineGuilan University of Medical SciencesRasht***Iran

Dear Editor,Arthropod-borne viruses are a group of the most important emerging *** cause a range of diseases in vertebrate hosts and threaten human health(Gan and Leo,2014).The global distribution of arboviruses is as... 详细信息

关键词： conditions. diseases viruses

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Numerical Solution of Model of Cancer Invasion with Tissue

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Applied Mathematics 2013年第7期4卷 1050-1058页

作者： farhad Hatami mohammad Bagher Ghaemi Department of Mathematics Iran University of Science and Technology Tehran Iran

Chemotaxis-haptotaxis model of cancer invasion with tissue remodeling is one of the important PDE’s systems in medicine, mathematics and biomathematics. In this paper we find the solution of chemotaxis-haptotaxis model of cancer invasion using the new homotopy perturbation method (NHPM). Then by comparing some estimated numerical result with simulation laboratory result, it shows that NHPM is an efficient and exact way for solving cancer PDE’s system.

关键词： Chemotaxis Haptotaxis Model of Cancer Invasion New Homotopy Perturbation Method

Clinical features of hepatopulmonary syndrome in cirrhotic patients

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World Journal of Gastroenterology 2006年第12期12卷 1954-1956页

作者： 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 Research Center for Gastroenterology and Liver Disease Shaheed Beheshti University of Medical SciencesTehranIran Cardiologist Shaheed Beheshti University of Medical SciencesTehranIran

AIM： To evaluate the frequency, clinical and paraclinical features of hepatopulmonary syndrome （HPS） and to determine their predictive values in diagnosis of this syndrome in patients in Iran. METHODS： Fifty four cirrhotic patients underwent contrast enhanced echocardiography to detect intrapulmonary and intracardiac shunts by two cardiologists. Arterial blood oxygen, 02 gradient （A-a） and orthodoxy were measured by arterial blood gas （ABG） test. The patients positive for diagnostic criteria of HPS were defined as clinical HPS cases and those manifesting the intrapulmonary arterial dilation but no other criteria （arterial blood hypoxemia） were defined as IHPS cases. HPS frequency, sensitivity, positive and negative predictive values of clinical and paraclinical features were studied. RESULTS： Ten （18.5%） and seven （13%） cases had clinical and subclinical HPS, respectively. The most common etiology was hepatitis B. Dyspnea （100%） and cyanosis （90%） were the most prevalent clinical features. Dyspnea and clubbing were the/host sensitive and specific clinical features respectively. No significant relationship was found between HPS and splenomegaly, ascites, edema, jaundice, oliguria, and collateral veins. HPS was more prevalent in hepatitis B. PaO2〈 70 and arterial-alveolar gradient had the highest sensitivity in HPS patients. Orthodoxy specificity was 100%. CONCLUSION： Clubbing with positive predictive value （PPV） of 75% and dyspnea with negative predictive value （NPV） of 75% are the best clinical factors in diagnosis of HPS syndrome. PaO2〈70 and P （A-a） 02〉 30 and their sum, are the most valuable negative and positive predictive values in HPS patients.

关键词： Hepatopulmonary syndrome Cirrhosis Contrast enhanced echocardiography

Non-alcoholic fatty liver disease is not independent risk factor for cardiovascular disease event:A cohort study

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World Journal of Hepatology 2020年第6期12卷 323-331页

作者： Nima Motamed Hossein Ajdarkosh Maral Ahmadi Dhayaneethie Perumal G Hossein Ashrafi mehdi Nikkhah Amir Hossein Faraji Mansooreh Maadi Mahmoodreza Khoonsari Nader Rezaie Behzad Farahani Fahimeh Safarnezhad Tameshkel Mitra Ameli Mahshid Panahi mohammad Hadi Karbalaie Niya farhad Zamani Department of Social Medicine Zanjan University of Medical SciencesZanjan ***Iran Gastrointestinal and Liver Diseases Research Center Iran University of Medical SciencesTehran ***Iran Faculty of Science Engineering and ComputingKingston UniversityKingstonLondon KT12EEUnited Kingdom Cancer Theme SEC Faculty Penrhyn Road Kingston UniversityLondon KT12EEUnited Kingdom Department of Pulmonology Firouzgar HospitalIran University of Medical SciencesTehran ***Iran Department of Cardiology Iran University of Medical SciencesTehran ***Iran

BACKGROUND There are no consistent results between previous studies for an independent association between non-alcoholic fatty liver disease(NAFLD)and cardiovascular disease(CVD)*** To determine if there is an independent association between NAFLD and CVD *** In the present study,valid outcome data of 4808 subjects were available for phase 2 of our cohort *** subjects had been followed up for seven years from phase 1,beginning in 2009-2010 to phase 2 during *** and multiple Cox proportional models were used to determine the association between NAFLD in the primary phase of the cohort and subsequent fatal and non-fatal CVD events during *** The incidence of non-fatal CVD events in males with NAFLD was significantly higher(P=0.004)than in males without NAFLD.A positive association was demonstrated between NAFLD and non-fatal CVD events in males(Hazard ratio=1.606;95%CI:1.166-2.212;P=0.004)by the simple Cox proportional hazard model,but no independent association was detected between these in the multiple Cox *** No independent association was detected between NAFLD and *** is likely that diabetes mellitus and age may be the principle mediators in this regard.

关键词： Non-alcoholic fatty liver disease Cardiovascular disease Cohort Type 2 diabetes mellitus Risk factor Follow up