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Triple-Columned and multiple-Layered 3D Polymers:Design,Synthesis,Aggregation-Induced Emission(AIE),and Computational Study

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Research 2021年第1期2021卷 112-124页

作者： Guanzhao Wu Yangxue Liu Zhen Yang Liulei ma Yao Tang Xianliang Zhao hossein Rouh Qixuan Zheng Peng Zhou Jia-Yin Wang Farhan Siddique Sai Zhang Shengzhou Jin Daniel Unruh Adelia JAAquino Hans Lischka Kristin m.Hutchins Guigen Li Department of Chemistry and Biochemistry Texas Tech UniversityLubbockTexas 79409-1061USA Institute of Chemistry and Biomedical Sciences School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093China School of Pharmaceutical Sciences and Technology Tianjin UniversityTianjin 300072China Department of mechanical Engineering Texas Tech UniversityLubbockTX 79409USA

Conjugated polymers and oligomers have great potentials in various fields,especially in materials and biological sciences because of their intriguing electronic and optoelectronic *** recent years,the through-space conjugation system has emerged as a new assembled pattern of multidimensional ***,a novel series of structurally condensed multicolumn/multilayer 3D polymers and oligomers have been designed and synthesized through one-pot Suzuki polycondensation(SPC).The intramolecularly stacked arrangement of polymers can be supported by either X-ray structural analysis or computational *** all cases,polymers were obtained with modest to good yields,as determined by GPC and 1 ***-TOF analysis has proven the speculation of the step-growth process of this *** computational study of ab initio and DFT calculations based on trimer and pentamer models gives details of the structures and the electronic *** results of optical and AIE research confirmed by calculation indicates that the present work would facilitate the research and applications in materials.

关键词： properties transition materials

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从微循环角度探讨放血疗法的机理

陕西中医 2010年第6期31卷 709-710页

作者：王广军 m.hossein Ayati 张宇沁丁玉龙田宇瑛黄涛张维波中国中医科学院针灸研究所北京100700 北京中医药大学研究生院北京100029 mashhad University of medical Sciences

目的:研究刺络放血疗法的作用部位及机理,不同的放血部位,治疗的疾病可能不同。方法:我们通过对不同民族医学体系放血部位的比较,发现放血部位有一定的规律可循。结果:一般临床常用的放血部位,要么是微循环非常丰富的位置,要么是静脉比... 详细信息

目的:研究刺络放血疗法的作用部位及机理,不同的放血部位,治疗的疾病可能不同。方法:我们通过对不同民族医学体系放血部位的比较,发现放血部位有一定的规律可循。结果:一般临床常用的放血部位,要么是微循环非常丰富的位置,要么是静脉比较浅表的位置。结论:刺络放血疗法的特点就是改善这些疾病治疗点的局部微环境,从而达到治疗远端疾病的目的。

关键词：刺络疗法针刺效应微循环

magnetic force microscopy of an operational spin nano-oscillator

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microsystems & Nanoengineering 2022年第3期8卷 247-252页

作者： Seyed Amir hossein Banuazizi Afshin Houshang Ahmad A Awad Javad mohammadi Johan Akerman Liubov m.Belova Faculty of New Sciences and Technologies University of TehranTehranIran materials and Nanophysics Department of Applied PhysicsSchool ofEngineering SciencesKTH Royal Institute of Technology11419 StockholmSweden Department of Physics University of Gothenburg41296 GothenburgSweden Department of materials Science and Engineering KTHRoyal Institute of Technology10044 StockholmSweden

magnetic force microscopy(mFm)is a powerful technique for studying magnetic microstructures and nanostructures that relies on force detection by a cantilever with a magnetic *** detected magnetic tip interactions are used to reconstruct the magnetic structure of the sample ***,we demonstrate a new method using mFm for probing the spatial profle of an operational nanoscale spintronic device,the spin Hall nano-osillator(SHNO),which generates high-intensity spin wave auto-osillations enabling novel microwave applications in magnonics and neuromorphic *** developed an mFm system by adding a microwave probe station to allow electrical and microwave characterization up to 40 GHz during the mFm ***-based on NiFe/Pt bilayers with a specific design compatible with the developed system-were fabricated and scanned using a Co magnetic force microscopy tip with 10 nm spatial mFm resolution,while a DC current sufficient to induce auto-oscillation *** results show that this developed method provides a promising path for the characterization and nanoscale magnetic field imaging of operational nano-osilators.

关键词： microwave characterization system

Relativistic particle scattering states with tensor potential and spatially-dependent mass

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Chinese Physics C 2013年第5期37卷 14-21页

作者： m. Eshghi m. R. Abdi Department of Physics Faculty of Science Imam Hossein Comprehensive University Department of Physics Faculty of Science University of Isfahan

We investigate the relativistic equation for particles with spin 1/2 in the q-parameter modified P5schl- Teller potential, including Coulomb-like tensor interaction with spatially-dependent mass for the D-dimension. We present approximate solutions of the Dirac equation with these potentials for any spin-orbit quantum number k under spin symmetry. The normalized wave functions are expressed in terms of the hyper-geometric series of the scattering states on the k/2π scale. We also give the formula for the phase shifts, and use the Nikiforov-Uvarov method to obtain the energy eigen-values equation.

关键词： Dirac equation relativistic scattering states modified PSschl-Teller potential spin symmetry tensor interaction

Improving pulsed laser weldability of duplex stainless steel to 5456 aluminum alloy via friction stir process reinforcing of aluminum by BNi-2 brazing alloy

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Transactions of Nonferrous metals Society of China 2019年第7期29卷 1401-1412页

作者： hossein ESmAILY Ali HABIBOLAHZADeh mohammad TAJALLY Faculty of materials and metallurgical Engineering Semnan University

Effects of laser pulse distance and reinforcing of 5456 aluminum alloy were investigated on laser weldability of Al alloy to duplex stainless steel (DSS) plates. The aluminum alloy plate was reinforced by nickel-base BNi-2 brazing powder via friction stir processing. The DSS plates were laser welded to the Al5456/BNi-2 composite and also to the Al5456 alloy plates. The welding zones were studied by scanning electron microscopy, X-ray diffractometry, micro-hardness and shear tests. The weld interface layer became thinner from 23 to 5 μm, as the laser pulse distance was increased from 0.2 to 0.5 mm. Reinforcing of the Al alloy modified the phases at interface layer from Al-Fe intermetallic compounds (ImCs) in the DSS/Al alloy weld, to Al-Ni-Fe ImCs in the DSS/Al composite one, since more nickel was injected in the weld pool by BNi-2 reinforcements. This led to a remarkable reduction in crack tendency of the welds and decreased the hardness of the interface layer from ~950 HV to ~600 HV. Shear strengths of the DSS/Al composite welds were significantly increased by ~150%, from 46 to 114 mPa, in comparison to the DSS/Al alloy ones.

关键词： duplex stainless steel (DSS) Al5456 aluminum alloy BNi-2 brazing alloy friction stir processing pulsed laser welding

Interaction effects of water salinity and hydroponic growth medium on eggplant yield,water-use efficiency,and evapotranspiration

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International Soil and Water Conservation Research 2016年第2期4卷 99-107页

作者： Farnoosh mahjoor Ali Asghar Ghaemi mohammad hossein Golabi Water Engineering Department College of AgricultureShiraz University*** ShirazIslamic Republic of Iran College of Natural and Applied Sciences University of GuamMangilaoGU 96923USA

Eggplant(Solanum melongena L.)is a plant native to tropical regions of Southeast *** water crisis and drought on the one hand and eggplant greenhouse crop development as one of the most popular fruit vegetables for people on the other hand,led to the need for more research on the use of saline water and water stress to optimize salinity level and their impact on eggplant evapotranspiration and encounter better yield and crop *** objective of the present study was to investigate the interactions of water salinity and hydroponic growth medium on qualitative and quantitative properties of eggplant and its water-use *** study used the factorial experiment based on completely randomized design with three replications of four levels of water salinity(electrical conductivity of 0.8(control),2.5,5,and 7 dS m^(-1))and three growth media(cocopeat,perlite,and a 50–50 mixture of the two by volume).Total yield,yield components,evapotranspiration,and water-use efficiency were determined during two growing periods,one each in 2012 and *** of these indices decreased significantly as water salinity *** with of 0.8 dS m^(-1) produced an average eggplant yield of 2510 g per plant in 2012 and 2600 g in *** highest yield was observed in *** with 7 dS m^(-1) reduced yield to 906 g per plant in 2012 and to 960 g in *** yield was observed in *** highest evapotranspiration values occurred in cocopeat at the lowest salinity in both *** and the cocopeat–perlite mixture were equally good *** mixture significantly improved the quantitative and qualitative properties of eggplant yield.

关键词： Cocopeat Greenhouse Penman–montith Qualitative Water stress Salinity

A New multistep Approach to Identify Leaf-Off Poplar Plantations Using Airborne Imagery

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Journal of Geographic Information System 2022年第6期14卷 634-651页

作者： Ramzan Ali Khorrami Zahra Naeimi michael Wing hossein Ahani Sayed m. Bateni Forests and Rangelands Research Department Mazandaran Agricultural and Natural Resources Research and Education Center Agricultural Research Education and Extension Organization (AREEO) Sari Iran Department of Physics University of Tehran Tehran Iran Forest Engineering Resources and Management Oregon State University Corvallis OR USA ministry of Agriculture Tehran Iran Department of Civil and Environmental Engineering and Water Resources Research Center University of Hawaii at Manoa Honolulu HI USA

Identification of type of leafless trees using both fall imagery and field-based surveys is a global concern in the forest science community. Few studies were devoted to separate leafless trees from others in the growth season using remote sensing imagery. But this study was the first attempt to identify the type of leafless tree in the fall imagery. We investigated the potential of the Simple Linear Iterative Clustering (SLIC) and k-mean segmentation techniques, and texture and color image analyses to identify leafless poplar trees using imagery collected in a leaf-off season. For the first time in this study, the star shaped feature identifier was found through a binary image that was successful in identifying leaf-off poplar plantations. Optimal threshold values of Normalized Difference Vegetation Index (NDVI) and Normalized Green Index (NGI) indices were able to differentiate highly vegetated land, green farms, and gardens from the grasses that sometimes grow between poplar plantation lines. A Coefficient of Variation (CV) of red color intensity and histogram of value were also successful in separating bare soil and other land cover types. Imagery was processed and analyzed in a matlab software. In this study, leafless poplar plantation was identified with a user accuracy of 84% and the overall accuracy was obtained 81.3%. This method provides a framework for identification of leafless poplar trees that may be beneficial for distinguishing other types of leafless trees.

关键词： Leafless Poplar Plantations Fall Ultracam Imagery Star Shaped-Feature K-mean Segmentation Texture and Color Image Analysis

High velocity impact of metal sphere on thin metallic plate using smooth particle hydrodynamics(SPH)method

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Frontiers of Structural and Civil Engineering 2012年第2期6卷 101-110页

作者： hossein ASADI KALAmeh Arash KARAmALI Cosmin ANITESCU Timon RABCZUK Institute of Structural mechanics Bauhaus-University WeimarWeimar 99423Germany

The modeling of high velocity impact is an important topic in impact *** to various constraints,experimental data are extremely ***,detailed numerical simulation can be considered as a desirable ***,the physical processes involved in the impact are very sophisticated;hence a practical and complete reproduction of the phenomena involves complicated numerical *** this paper,we present a smoothed particle hydrodynamics(SPH)method to model two-dimensional impact of metal sphere on thin metallic *** simulations are applied to different materials(Aluminum,Lead and Steel);however the target and projectile are formed of similar metals.A wide range of velocities(300,1000,2000,and 3100 m/s)are considered in this *** goal is to study the most sensitive input parameters(impact velocity and plate thickness)on the longitudinal extension of the projectile,penetration depth and damage crater.

关键词： smoothed particle hydrodynamics high velocity impact sensitivity analysis

Isolation of an antibiotic producer Pseudomonas *** the Persian Gulf

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Asian Pacific Journal of Tropical medicine 2010年第4期3卷 318-321页

作者： Esmaeil Darabpour mohammad Roayaei Ardakani hossein motamedi Gholamreza Ghezelbash mohammad Taghi Ronagh Department of Biology Faculty of ScienceShahid Chamran UniversityAhvazIran Department of marine Ecology Marine Science & Technology UnivesityKhoramshahrIran

Objective:To investigate the isolation of marine antibiotic-producing bacteria from the Persian Gulf,as an untapped source for searching new natural ***:Initially water and sediment samples were collected from 18 study sites in the some northern areas of Persian *** of the bacterial isolates using marine Agar 2216 were inoculated into marine broth and incubated on a rotary shaker at 28℃for 2-7 *** of their ethyl acetate extract was assessed at 100 mg/mL concentration in disc diffusion method against 6 gram-positive and 5 gram-negative *** antibiotics were used as ***:Altogether,46 bacterial colonies were *** one isolate from a marine sediment sample collected at a depth of 10 m,identified as Pseudomonas aeruginosa PG-01,was exhibited the capability of antibiotic *** obtained raw extract from intended bacterium was effective against all tested gram positive bacteria while gram negative bacteria were *** resisitant Stapuylococcus aureus(mRSA),Streptococcus pyogenes(***).Staphylococcus epidermidis (***) and Bacillus cereus(***) were the most sensitive *** of tested pathogens were multidrug *** antibacterial compound from this bacterium was active even at 120℃.The optimized temperature and time for antibacterial metabolite production were 37℃and 72 hrs,***:Considering the antibacterial effect of Pseudomonas aeruginosa PG-01 especially against mRSA,it can be regarded the intended bacterium as a valuable strain and can give hope for treatment of diseases caused by multidrug resistant bacteria.

关键词： Persian Gulf marine sediment Pseudomonas Antibacterial compound mRSA