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Mass production of magnetocaloric LaFeMnSiB alloys with hydrogenation

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Journal of Iron and Steel Research International 2017年第4期24卷 462-468页

作者： Tao Zhang cheng-yong wang Lugee Li yong Zhang Cui-lan Liu Guangdong University of Technology Guangzhou 510006GuangdongChina Dongguan Eontech Co. Ltd.Dongguan 523662GuangdongChina State Key Laboratory of Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China Baotou Research Institute of Rare Earth Baotou 014030Inner MongoliaChina

LaFe_（11.39）Mn_（0.35）Si_（1.26）B_（0.1）Hxalloys were prepared by *** were annealed at 1343Kfor30-90 hto form the NaZn13 ***-rich andα-Fe secondary phases were also *** hydrogenation at 553 Kand 0.15 MPa of H_2 pressure for 5hwas employed to improve the Curie temperature of the alloys to 279 *** maximum magnetic entropy change,relative cooling power,and adiabatic temperature change of LaFe_（11.39）Mn_（0.35）Si_（1.26）B_（0.1）H_x annealed at 1343 Kfor 90hafter hydrogen absorption are 6.38J/（kg·K）（magnetic changesμ0ΔH =1.65T）,100.1J/kg（μ0ΔH =1.65T）,and 2.2 K（μ0ΔH =1.48T）,*** the maximum magnetic entropy change of the LaFe_（11.39）Mn_（0.35）Si_（1.26）B_（0.1）H_x alloys is lower than those of similar alloys with high purity raw materials,the relative cooling power is nearly the *** effect of impurities of the raw materials used was also *** is assumed that the impurity of 0.2wt.% Al is responsible for the reduced entropy change of the resulted *** LaFe_（11.39）Mn_（0.35）Si_（1.26）B_（0.1）H_x alloys prepared by this method could be a low cost alternative material for room temperature magnetic cooling applications.

关键词： Magnetocaloric effect Annealing Hydrogenation Adiabatic temperature change Relative cooling power Maximum magnetic entropy change

A new strategy for managing presacral venous hemorrhage：bipolar coagulation hemostasis

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Chinese Medical Journal 2010年第23期123卷 3486-3488页

作者： LI Yu-yan CHEN yong XU Hui-cheng wang Dan LIANG Zhi-qing Department of Obstetrics and Gynecology Southwest HospitalThird Military Medical University Chongqing 400038 China

Massive presacral venous hemorrhage is dangerous and difficult to manage. Traditional methods for controlling this condition include packing with laparotomy pads, the use of sterile thumbtacks,1 ligation of the internal iliac vessel,2 and selective arterial embolization.3 These methods are generally ineffective. Recently, several other methods for controlling presacral bleeding have been reported, such as occlusion of the wound with rectus muscle fragment welding,4 oppression with sterile normal saline bags,5 balloon tamponade,6 and the use of endoscopic staples.7 However, these measures fail to arrest the bleeding in some patients, resulting in massive hemorrhage and even death.

关键词： presacral venous plexus massive hemorrhage bipolar coagulation hemostasis

Theoretical Studies on Reaction Pathways of Samarium（Ⅱ） Carbenoid Promoteded Cyclopropanation Reaction of Ethylene

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Chinese Journal of Chemical Physics 2006年第1期19卷 69-75页

作者： Zhi-yuan Geng Xing-hui Zhang yong-cheng wang Ran Fang Li-guo Gao Xiao-xia Chen Cun-yuan Zhao College of Chemistry and Chemical Engineering Gansu Province Key Laboratory of Polymer MaterialsNorthwest Normal University Lanzhou 730070 China

In order to have efficient and highly stereoselective cyclopropanating reagents, the cyclopropabation reaction of ethylene promoted with Samarium（Ⅱ） carbenoid [Simmons-Smith（SS）reagent] were studied by means of B3LYP hybrid density functional method. The geometries for reactants, transition states and products are completely optimized. All transition states were verified by the vibrational analysis and the intrinsic reaction coordinate （IRC） calculations. The results showed that, identical with the lithium carbenoid, CH3SmCH2X（X=Cl, Br and Ⅰ） can fairly react with ethylene via both methylene transfer pathway （pathway A） and carbometalation pathway （pathway B）. And the cyclopropanation reaction via methylene transfer pathway proceeds with a lower barrier and at lower temperatures.

关键词： Samarium carbenoid Cyclopropanation Simmons-Smith reaction Density functional theory

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向量值哈代-洛伦茨空间

数学学报（中文版） 2016年第4期59卷 489-504页

作者：汪成咏渠刚荣北京交通大学数学系北京100044

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关键词：哈代-洛伦茨空间极大函数泊松积分缓分布

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玛欣凯维奇函数与泊松核的一个新微分性质

数学学报（中文版） 2016年第1期59卷 1-10页

作者：汪成咏渠刚荣北京交通大学数学系北京100044

将Stein[On the functions of Littlewood-Paley,Lusin,and Marcinkiewicz,***.,1958,88:430-466]中的玛欣凯维奇函数的逆向不等式推广到一般情形.主要结果是对于n-维欧几里得空间k-阶球面调和函数空间的任意一基底,得到玛欣凯维奇函数的一般性的逆向不等式,即存在不依赖于函数f正常数C_p,使得||f||_p≤C_pΣ_(j=1)~N=1||μ_j(f)||_p,其中{μ_j(f)}_(j=1)~N是f的由这些球面调和函数生成的玛欣凯维奇函数.此外,对于任意的n-变元的k-阶调和多项式Q(x)以及泊松核P_t(x),有Q(D)P_t(x)=C_n k(tQ(x))/((|x|)~2+t^2^(n+2k+1)/2).

关键词：玛欣凯维奇函数泊松核向量值奇异积分算子

Serum levels of homocysteine and circulating antioxidants associated with heart rate variability in patients with unstable angina pectoris

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Chinese Medical Journal 2019年第1期132卷 96-99页

作者： yong-cheng wang Du-Fang Ma Ping Jiang Jin-Long Yang Yi-Mei Zhang Xiao Li Departments of First Clinical Medical Shandong University of Traditional Chinese MedicineJinanShandong 250014China Departrnents of Cardiovascular Medicine Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinanShandong 250014China Departments of Acupuncture and moxibustion Second Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinanShandong 250001China

To the Editor:Autonomic dysfunction is an important factor in the pathogenesis of unstable angina pectoris (UAP).It affects coronary artery systolic function,induces coronary spasm,aggravates myocardial ischemia,reduc... 详细信息

关键词： Serum levels of homocysteine circulating antioxidants associated heart rate variability

Development and calibration of the Moon-based EUV camera for Chang'e-3

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Research in Astronomy and Astrophysics 2014年第12期14卷 1654-1663页

作者： Bo Chen Ke-Fei Song Zhao-Hui Li Qing-Wen Wu Qi-Liang Ni Xiao-Dong wang Jin-Jiang Xie Shi-Jie Liu Ling-Ping He Fei He Xiao-Guang wang Bin Chen Hong-Ji Zhang Xiao-Dong wang Hai-Feng wang Xin Zheng Shu-Lin E yong-cheng wang Tao Yu Liang Sun Jin-Ling wang Zhi wang Liang Yang Qing-Long Hu Ke Qiao Zhong-Su wang Xian-Wei Yang Hai-Ming Bao Wen-Guang Liu Zhe Li Ya Chen Yang Gao Hui Sun Wen-Chang Chen Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences

The process of development and calibration for the first Moon-based ex- treme ultraviolet （EUV） camera to observe Earth＇s plasmasphere is introduced and the design, test and calibration results are presented. The EUV camera is composed of a multilayer film mirror, a thin film filter, a photon-counting imaging detector, a mech- anism that can adjust the direction in two dimensions, a protective cover, an electronic unit and a thermal control unit. The center wavelength of the EUV camera is 30.2 nm with a bandwidth of 4.6nm. The field of view is 14.7° with an angular resolution of 0.08°, and the sensitivity of the camera is 0.11 count s-1 Rayleigh-1. The geomet- ric calibration, the absolute photometric calibration and the relative photometric cal- ibration are carried out under different temperatures before launch to obtain a matrix that can correct geometric distortion and a matrix for relative photometric correction, which are used for in-orbit correction of the images to ensure their accuracy.

关键词： Chang'e-3 -- EUV camera: development: calibration -- Earth's plas-masphere -- lunar exploration

Mutual regulation of microglia and astrocytes after Gas6 inhibits spinal cord injury

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Neural Regeneration Research 2025年第2期20卷 557-573页

作者： Jiewen Chen Xiaolin Zeng Le wang Wenwu Zhang Gang Li Xing cheng Peiqiang Su yong Wan Xiang Li Department of Spine Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Guangdong Province Key Laboratory of Orthopedics and Traumatology GuangzhouGuangdong ProvinceChina

Invasive inflammation and excessive scar formation are the main reasons for the difficulty in repairing nervous tissue after spinal cord *** and astrocytes play key roles in the spinal cord injury micro-environment and share a close ***,the mechanisms involved remain *** this study,we found that after spinal cord injury,resting microglia(M0)were polarized into pro-inflammatory phenotypes(MG1 and MG3),while resting astrocytes were polarized into reactive and scar-forming *** expression of growth arrest-specific 6(Gas6)and its receptor Axl were significantly down-regulated in microglia and astrocytes after spinal cord *** vitro experiments showed that Gas6 had negative effects on the polarization of reactive astrocytes and pro-inflammatory microglia,and even inhibited the cross-regulation between *** further demonstrated that Gas6 can inhibit the polarization of reactive astrocytes by suppressing the activation of the Yes-associated protein signaling ***,in turn,inhibited the polarization of pro-inflammatory microglia by suppressing the activation of the nuclear factor-κB/p65 and Janus kinase/signal transducer and activator of transcription signaling *** vivo experiments showed that Gas6 inhibited the polarization of pro-inflammatory microglia and reactive astrocytes in the injured spinal cord,thereby promoting tissue repair and motor function ***,Gas6 may play a role in the treatment of spinal cord *** can inhibit the inflammatory pathway of microglia and polarization of astrocytes,attenuate the interaction between microglia and astrocytes in the inflammatory microenvironment,and thereby alleviate local inflammation and reduce scar formation in the spinal cord.

关键词： astrocytes Axl cell polarization Gas6 Hippo signal inflammatory micro-environment intercellular interaction microglia single-cell sequencing spinal cord injury

Crystallization Modulation and Holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)Tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong Geng Kuanxiang Zhang Changhua wang Chung Hsien Wu Jiwen Jiang Fei Long Liyuan Han Qifeng Han Yi‑Bing cheng yong Peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination