检索结果-南通市图书馆

Impact of Zika virus non-structural protein mutations on hippocampal damage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2307-2308页

作者： Larissa m.g.Cassiano Roney S.Coimbra Neurogenômica/Imunopatologia Instituto RenéRachouFiocruzBelo HorizonteBrazil Departamento de Bioquímica e Imunologia Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil

The Zika virus(ZIKV),a member of the Flaviviridae family,attracted worldwide attention for its connection to severe neurological effects,notably microcephaly in newborns,first reported during the 2015 epidemic in ***,its impact goes beyond fetal and neonatal abnormalities,also affecting the central nervous system(CNS)in both children and adults,leading to enduring cognitive and behavioral impairments.

关键词： damage fetal neonatal

Applying the spectral stochastic finite element method in multiple-random field RC structures

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2022年第4期16卷 434-447页

作者： Abbas yazdani Civil Engineering Department University of Sistan and BaluchestanZahedan 98167-45845Iran

This paper uses the spectral stochastic finite element method(SSFEm)for analyzing reinforced concrete(RC)beam/slab *** doing so,it presents a new framework to study how the correlation length of a random field(RF)with uncertain parameters will affect modeling uncertainties and reliability *** considers:1)different correlation lengths for uncertainty parameters,and 2)dead and live loads as well as the elasticity moduli of concrete and steel as a multi-dimensional RF in concrete *** show the SSFEm’s efficiency in the study of concrete structures and to evaluate the sensitivity of the correlation length effects in evaluating the reliability,two examples of RC beams and slabs have been *** to the results,the RF correlation length is effective in modeling uncertainties and evaluating reliabilities;the longer the correlation length,the greater the dispersion range of the structure response and the higher the failure probability.

关键词： uncertainty spectral stochastic finite element method correlation length reliability assessment reinforced concrete beam/slab

Synergistic effect of seawater's parameters on the corrosion rate of the austenitic stainless steel 304

在线全文

学校读者我要写书评

暂无评论

Acta metallurgica Sinica(English Letters) 2010年第3期23卷 161-170页

作者： S.Atashin m.Pakshir A.yazdani Department of materials Science and Engineering Shiraz University

In this article the corrosion rate of the austenitic stainless steel type 304, under the synergistic effect of environmental factors has been assessed via potentiodynamic polarization ***, velocity, pH and temperature are the factors which induce effects on the corrosion rate of the considered *** analysis is applied using the full two-level factorial experimental design method, which results in the contribution value of each parameter in changing the quantity of average corrosion rate in both individual and synergistic *** this quantitative analysis, qualitative analysis has been used to predict the variation *** two analyses show the important role of the synergistic action, which changes the variation direction of corrosion rate and the contribution percentage of each parameter in varying the value of corrosion *** both these analyses can show the magnitude and quality of each parameter＇s effect, which is remarkably valuable in marine applications.

关键词： Stainless steel 304 Environmental parameters Seawater corrosion Synergistic effect

Investigation on available wind energy at Tungku beach

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2012年第3期6卷 275-279页

作者： m. g. yazdani m. A. SALAm Department of mechanical Engineering Faculty of EngineeringInstitute Technology Brunei Brunei Darussalam Department of Electrical and Electronic Engineering Faculty of Engineering Institute Technology Brunei Brunei Darussalam

In this paper, wind velocities and directions （sea and land） are recorded in different days and times. The data collected were compared with the weather data from the Brunei Darussalam meteorological Service （BDmS） and the findings of other researchers and were found to be in good agreement. The potential of wind energy is predicted from the available data collected. The average generated power （forenoon and afternoon） is found to be 25 （mean） and 18W （median）, 101 （mean） and 73W （median）, 912 （mean） and 660 W （median）, 10137 （mean） and 7331 W （median） for a rotor with a diameter of 2.5, 5, 15 and 50 m, respectively. The power density Pd for wind farming is found to be 0.26 （mean） and 0.19 （median）, 0.31 （mean） and 0.22 （median） for the rotor whose diameter is 2.5 and 50 m, respectively, while the average Pd values are found to be 0.28 （mean） and 0.2 （median） for the rotor whose diameter is 5 and 15 m.

关键词： wind velocity temperature tower height,power density Raleigh distribution electrical power

Three-dimensional heat transfer in a particulate bed in a rotary drum studied via the discrete element method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2020年第4期18卷 155-162页

作者： Esmaeil yazdani Seyed Hassan Hashemabadi Computational Fluid Dynamics(CFD)Research Laboratory School of ChemicalPetroleum and Gas EngineeringIran University of Science and Technology(IUST)16846-13114 TehranIran

We simulated three-dimensional heat transfer inside a horizontal rotating drum using the discrete element method and a thermal conduction *** aim was to determine the effect of end-wall heating on thermal behavior of a granular *** simulation showed that the end-wall heating significantly affects the axial temperature profile of the bed,particularly when the length-to-diameter ratio is *** near the wall heated faster and became more thermally uniform than those in the center of the *** region affected by the end heating gradually increased over *** the rotation speed enhanced the heat conduction rate,and increasing the fill level reduced the mean temperature and thermal uniformity of the granular *** transfer was also simulated for drums with different length-to-diameter ratios.

关键词： Discrete element method Three-dimensional heat transfer Rotary drum Numerical simulation Axial temperature Particulate bed

Interaction between B-Doped C60 Fullerene and glycine Amino Acid from First-Principles Simulation

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 Physics Letters 2010年第4期27卷 83-86页

作者： m. D. ganji H. yazdani Department of Chemistry Islamic Azad University Ghaemshahr branch Mazandaran Iran

The possibility of formation of complexes between glycine and boron doped C60 （C59B） fullerene is investigated and compared with that of C60 fullerene by using the density functional theory calculations. It has been found that the binding of glycine to C59B generated the most stable complexes via its carbonyl oxygen active site, with a binding energy of-37.89 kcal/mol, while the glycine molecule prefers to bind to the pure C60 cage via its amino nitrogen active site, consistent with the recent experimental and theoretical studies. We have also tested the stability of the most stable gly-C59B complex with ab initio molecular dynamics simulation, carried out at room temperature. These indicate that the B-doped C60 fullerenes seem to be more suitable materials for bindings to proteins than pure C60 fullerenes.

关键词： Surfaces interfaces and thin films Biological physics Condensed matter: structural mechanical & thermal Chemical physics and physical chemistry

Studies on mass attenuation coefficients for some body tissues with different medical sources and their validation using monte Carlo codes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2020年第12期31卷 50-64页

作者： Sepideh yazdani Darki Sajad Keshavarz Department of Physics University of YazdYazdIran Department of medical Radiation Engineering University of Science and Research Branch TehranTehranIran

The mass attenuation coefficients of the breasts,lungs,kidneys,pancreas,liver,eye lenses,thyroid,brain,ovary,heart,large intestines,blood,skin,spleen,muscle,and cortical bone were measured at different sources(i.e.,0.021,0.029,0.03,0.14,0.218,0.38,0.412,0.663,0.83,and 1.25 meV)using various methods including the monte Carlo N-particle transport code(mCNP),the geometry and tracking code(gEANT4),and theoretical approach described in this *** attenuation coefficients were also compared with the values from the national institute of standards and technology(NIST-XCOm).The values obtained were similar to those obtained using *** results show that the theoretical method is quite convenient in comparison with gEANT4 and mCNP in the calculation of the mass attenuation coefficients of the human body samples applied when compared with the NIST values and demonstrated an acceptable difference.

关键词： mass attenuation coefficient mCNP geant4 XCOm Human organs

Delay-Constrained Optimized Packet Aggregation in High-Speed Wireless Networks

在线全文

学校读者我要写书评

暂无评论

Journal of Computer Science & Technology 2013年第3期28卷 525-539页

作者： Peyman Teymoori Nasser yazdani School of Electrical and Computer Engineering University College of Engineering University of Tehran School of Computer Science Institute for Research in Fundamental Sciences

High-speed wireless networks such as IEEE 802.11n have been introduced based on IEEE 802.11 to meet the growing demand for high-throughput and multimedia applications. It is known that the medium access control （mAC） efficiency of IEEE 802.11 decreases with increasing the physical rate. To improve efficiency, few solutions have been proposed such as Aggregation to concatenate a number of packets into a larger frame and send it at once to reduce the protocol overhead. Since transmitting larger frames eventuates to dramatic delay and jitter increase in other nodes, bounding the maxi- mum aggregated frame size is important to satisfy delay requirements of especially multimedia applications. In this paper, we propose a scheme called Optimized Packet Aggregation （OPA） which models the network by constrained convex optimization to obtain the optimal aggregation size of each node regarding to delay constraints of other nodes. OPA attains proportionally fair sharing of the channel while satisfying delay constrains. Furthermore, reaching the optimal point is guaranteed in OPA with low complexity. Simulation results show that OPA can successfully bound delay and meet the requirements of nodes with only an insignificant throughput penalty due to limiting the aggregation size even in dynamic conditions.

关键词： high-speed wireless network delay requirement aggregation convex optimization

The Energy Distribution of a Noncommutative Reissner–Nordström Black Hole

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2013年第9期30卷 25-28页

作者： Kourosh Nozari A.yazdani Center for Excellence in Astronomy and Astrophysics(CEAAI-RIAAm)-maragha P.O.Box55134-441MaraghaIran Department of Physics Faculty of Basic SciencesUniversity of MazandaranP.O.Box 47416-95447BabolsarIran

We study the energy distribution of a noncommutative Reissner–Nordström black *** consider both Ein-stein and møller prescriptions,and compare our results with the corresponding results obtained recently for a Schwar... 详细信息

关键词： Reissner commutative black