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Chinese Physics B 2023年第6期32卷 259-269页

作者： h Ahmad B Nizamani m Z Samion N Yusoff m F Ismail Photonics Research Centre Universiti Malaya50603 Kuala LumpurMalaysia Physics Department Faculty of ScienceUniversiti Malaya50603 Kuala LumpurMalaysia Distinguished Visiting Professor Universiti Kuala Lumpur British Malaysian Institute(UniKL BMI)Batu 8Jln Sungai Pusu53100SelangorMalaysia

We demonstrate antimonene as a saturable absorber(SA) to generate an ultrafast mode-locked and Q-switched laser in the 2 μm wavelength region. The two antimonene-based SAs were prepared and inserted separately in a thulium.h..miumdoped fiber laser to produce the pulsed laser. Antimonene was coated onto a tapered fiber to generate soliton mode-locked pulses and used in thin-film form for the generation of Q-switched pulses. The mode-locking was stable within a pump power of 267 m W–511 m W, and the laser operated at a central wavelength of 1897.4 nm. The mode-locked laser had a pulse width of 1.3 ps and a repetition rate of 12.6 mhz, with a signal-to-noise ratio of 64 d B. Q-switched laser operation was stable at a wavelength of 1890.1 nm within a pump power of 312 m W–381 m W. With the increase in pump power from 312 m W to 381 m W, the repetition rate increased to a maximum of 56.63 k hz and the pulse width decreased to a minimum value of 2.85 μs. Wide-range tunability of the Q-switched laser was also realized within the wavelength range of1882 nm–1936 nm.

关键词： mode-locking Q-switched fiber laser optical saturable absorber

DURATION OF APPEARANCE OF Vi ANTIGEN AND SALmONELLA TYPhI IN BLOOD AND URINE OF INFECTED mODELS

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中华医学杂志(英文版) 1991年第1期104卷 46-48页

作者： D m Wang X h Gu Children's hospital Shanghai Medical University.

Salmonella typhi (S typhi) infected models were established to evaluate the latex agglutination test (LAT) and staphylococcal coagglutination test (SCT) for the detection of S typhi Vi antigen in blood and urine. Antigens in serum or urine were detected within 7 days after infection with positive cultures, and decreased in 2 weeks. LAT and SCT were positive in 7 mice with no bacteria isolation from blood and urine but their spleen aspirates yielded S typhi. Both tests are rapid and sensitive and may be used for the diagnosis of typhoid infection, especially in partially treated patients when their blood cultures are negative.

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

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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

Impact strength and structural refinement of A380 aluminum alloy produced through gas-induced semi-solid process and Sr addition

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Transactions of Nonferrous metals Society of China 2022年第5期32卷 1405-1415页

作者： m.h..ARmAND m.SALEhI S.G.ShABESTARI h.SAGhAFIAN School of metallurgy and materials Engineering Iran University of Science and Technology(IUST)NarmakTehranIran

Semi-solid processing of A380 aluminum alloy was performed by gas induced semi-solid(GISS)*** effects of argon inert gas flow rate,starting temperature and duration of gas purging as key GISS parameters and also modification with Sr on the structural refinements,hardness and impact strength of GISS alloys were *** evolution shows that there is an important effect of the pouring temperature and Sr addition on the morphology and size of primaryα(A1)in the alloy to change from coarse dendritic to fine globular *** best sample which has fine grains of 51.18μm in average size and a high level of globularity of 0.89 is achieved from a GISS processing of Sr modified alloy in which the gas purging started at 610℃.The impact strength of the GISS optimized samples((4.67±0.18)J/cm^(2))shows an increase of about 40%with respect to the as-cast sample due to the globular structure and fibrous Si ***,the hardness of the optimized GISS sample((89.34±2.85)hB)increases to(93.84±3.14)hB by modification with the Sr and GISS *** fracture surface of Sr modified alloy is also dominated by complex topography showing typical ductile fracture features.

关键词： gas-induced semi-solid process impact strength A380 aluminium alloy globular structure modification

Nonmechanical criteria proposed for prediction of hot tearing sensitivity in 2024 aluminum alloy

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Transactions of Nonferrous metals Society of China 2018年第5期28卷 848-857页

作者： m.h..hONChEh S.G.ShABESTARI A.ASGARI m.KARImZADEh School of metallurgy and materials Engineering Iran University of Science and Technology Center of Excellence for high Strength Alloys Technology School of Metallurgy and Materials EngineeringIran University of Science and Technology School of mechanical Engineering Iran University of Science and Technology

Two theoretical criteria represented by Katgerman, and Clyne and Davies for prognosticating hot tearing sensitivity were compared. Both unrefined and grain-refined samples of Al2024 alloy were solidified at various cooling rates ranging from 0.4 to 17.5 °C/s. Thermal analysis was used to detect dendrite coherency point and temperature of eutectic reaction. Curves of solid and liquid fractions were plotted based on Newtonian method to determine hot tearing susceptible areas. The experimental results show that the most susceptible zone in which hot tearing can occur in Al2024 is where Al_2Cumg intermetallic compound forms as a eutectic phase at last stage of mushy-state interval. Also, both criteria are in a good agreement with each other at high cooling rates used in direct-chill casting process while Clyne and Davies＇ model is more acceptable to determine hot tearing tendency from low to medium cooling rates.

关键词： 2024 aluminum alloy dendrite coherency direct-chill casting thermal analysis hot tearing

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聚合物熔体复杂流动时形变的研究

高分子材料科学与工程 1997年第6期13卷 21-26页

作者：李萍 G.W.m.Peters h.E.h.meijer 江苏石油化工学院

为了研究聚合物流体在圆形通道中的流动，设定不同的速度、温度以及圆柱体在流道中的不同位置，分别进行实验，并对其数值模拟。实验和数值模拟的结果表明，我们可以得到熔体流动形变的轨迹，并用Ｃａｒｒｅａｕ－Ｙａｓｕｄａ和Ｍａｘ... 详细信息

为了研究聚合物流体在圆形通道中的流动，设定不同的速度、温度以及圆柱体在流道中的不同位置，分别进行实验，并对其数值模拟。实验和数值模拟的结果表明，我们可以得到熔体流动形变的轨迹，并用Ｃａｒｒｅａｕ－Ｙａｓｕｄａ和Ｍａｘｗｅｌ以及ＰＴＴ模型描述和比较聚合物熔体在流动中的形变。

关键词：复杂流动数值模拟粘弹性形变高聚物熔体

CD40 interacts directly with RAG1 and RAG2 in autoaggressive T cells and Fas prevents CD40-induced RAG expression

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Cellular & molecular Immunology 2013年第6期10卷 483-489页

作者： Gisela m Vaitaitis David h Wagner Jr Department of medicine and Webb-Waring Center University of Colorado Denver Aurora CO USA

CD4＋ T cells expressing CD40 （Th40 cells） constitute a pathogenic T-cell subset that is necessary and sufficient to transfer autoimmune disease. We have previously demonstrated that CD40 signals peripheral Th40 cells to induce RAG1 and RAG2 expression, proteins necessary for the expression of T-cell receptor （TCR）, leading to TCR revision. The dependency of TCR expression in the thymus on RAG proteins has long been known. however, despite numerous publications, there is controversy as to whether TCR expression can be altered in the periphery, post-thymic selective pressures. Therefore, a better understanding of TCR expression in primary peripheral cells is needed. We now show that the CD40 protein itself interacts with RAG1 and RAG2 as well as with Ku70 and translocates to the nucleus in Th40 cells. This indicates that the CD40 molecule is closely involved in the mechanism of TCR expression in the periphery. In addition, Fas signals act as a silencing mechanism for CD40-induced RAGs and prevent CD40 translocation to the nucleus. It will be important to further understand the involvement of CD40 in peripheral TCR expression and how TCR revision impacts auto-antigen recognition in order to effectively target and tolerize autoaggressive T cells in autoimmune disease.

关键词： autoimmunity CD40 Fas RAG T-cell receptor

Femtoseconds soliton mode-locked erbium-doped fiber laser based on nickel oxide nanoparticle saturable absorber

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Chinese Optics Letters 2017年第10期15卷 28-32页

作者： A.Nady m.h...Ahmed A.A.Latiff C.h.Raymond Ooi S.W.harun Department of Physics Faculty of ScienceUniversity of Malaya Physics Department Faculty of ScienceBeni Suef University Department of Electrical Engineering Faculty of EngineeringUniversity of Malaya Faculty of Electronic and Computer Engineering Universiti Teknikal Malaysia Melaka

We demonstrate a femtosecond mode-locked erbium-doped fiber laser（EDFL） using a nickel oxide（Ni O） as a saturable absorber（SA）. Ni O nanoparticles are hosted into polyethylene oxide film and attached to fiber ferrule in the laser cavity. The Ni O-SA shows a 39% modulation depth with a 0.04 mW∕cm^2 saturation intensity. Our ring laser cavity based on erbium-doped active fiber with managed intracavity dispersion has the ability to generate ultrashort pulses with a full width at half-maximum（FWhm） of around 2.85 nm centered at 1561.8 *** pulses repeat at a frequency of 0.96 mhz and duration of 950 fs.

关键词： EDF Femtoseconds soliton mode-locked erbium-doped fiber laser based on nickel oxide nanoparticle saturable absorber

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西班牙恩西索碾压混凝土坝建设

水利水电快报 2013年第7期34卷 15-18页

作者： m.阿兰德[西班牙] 郑毅(译) 赵树湘(校)

计划修建于锡达科斯河上的恩西索水利枢纽,是西班牙治理锡达科斯河的重点项目,目前正处于施工阶段。工程建成后具有调洪、灌溉、供水、维持生态流量等多种功能。通过模型试验优化了设计部件的水力运行性能。介绍了工程建设的目的、目前... 详细信息

计划修建于锡达科斯河上的恩西索水利枢纽,是西班牙治理锡达科斯河的重点项目,目前正处于施工阶段。工程建成后具有调洪、灌溉、供水、维持生态流量等多种功能。通过模型试验优化了设计部件的水力运行性能。介绍了工程建设的目的、目前已开展的工作以及通过模型试验得出的结论。

关键词：碾压混凝土坝坝设计坝施工恩西索水利枢纽西班牙

microstructural evolution of copper-titanium alloy during in-situ formation of TiB_2 particles

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Transactions of Nonferrous metals Society of China 2013年第10期23卷 2994-3001页

作者： m.SOBhANI h.ARABI A.mIRhABIBI R.m.D.BRYDSON Center of Excellence for Advanced materials and Processing School of Metallurgy and Materials Engineering Iran University of Science and Technology Center of Excellence for Ceramic materials in Energy and Environmental Applications Iran University of Science and Technology Institute for materials Research University of Leeds

Bulk Cu-Ti alloy reinforced by TiB2 nano particles was prepared using in-situ reaction between Cu 3.4%Ti and Cu-0.7%B master alloys along with rapid solidification and subsequent heat treatment for 1-10 h at 900 ℃. high-resolution transmission electron microscopy （hRTEm） characterization showed that primary TiB2 nano particles and TiB whiskers were formed by in-situ reaction between Ti and B in the liquid copper. The formation of TiB whiskers within the melt led to coarsening of TiB2 particles. Primary TiB2 particles were dispersed along the grain boundaries and hindered grain growth at high temperature, while the secondary TiB2 particles were formed during heat treatment of the alloy by diffusion reaction of solute titanium and boron inside the grains. Electrical conductivity and hardness of the composite were evaluated during heat treatment. The results indicated that the formation of secondary TiB2 particles in the matrix caused a delay in hardness reduction at high temperature. The electrical conductivity and hardness increased up to 8 h of heat treatment and reached 33.5% IACS and hV 158, respectively.

关键词： in-situ reaction TiB whiskers TiB2 particles Cu-Ti alloy composite