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NUmERICAl SImUlATION OF SUCCINONITRITE DENDRITIC GROWTH IN A FORCED FlOW

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Acta metallurgica Sinica(English letters) 2008年第6期21卷 444-450页

作者： Z. Chen C.l. Chen l.m. Hao School of Science Department of Applied Physics Shaanxi Key Laboratory of Condensed Matter Structures and Properties Northwestern Polytechnical University Xi＇an 710072 China School of Science Xi＇an University of Science ＆ Technology Xi＇an 710054 China

Numerical simulation based on phase field method is performed to describe solidification process of pure material in a free or forced flow. The evolution of the interface is showed, and the effects of mesh grid and flow velocity on succinonitrite shape are studied. These results indicate that crystal grows into an equiaxial dendrite in a free flow and into an asymmetrical dendritic in a forced flow. With increasing flow velocity, the upstream dendritic arm tip grows faster and the downstream arm grows slower. However, the evolution of the perpendicular tip has no significant change. In addition, mesh grid has no influence on dendritic growth shape when mesh grid is above 300×300.

关键词： Phase field method Forced flow Dendritic Succinonitrite Tip velocity

STUDY ON PTA ClAD (Cr,Fe)_7C_3/γ-Fe CERAmAl COmPOSITE COATING

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Acta metallurgica Sinica(English letters) 2005年第6期18卷 695-700页

作者： J.B. liu J.H. Huang l.m. Wang Department of mechanical and Electronic Engineering Weifang University Weifang 261061 China School of materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

A wear resistant （Cr, Fe）7C3/γ-Fe ceramalcomposite coating wasfabricatedon substrate of a 0.45% C carbon steel by plasma transferred arc （PTA） cladding process using the Fe-Cr-C el.m.ntal powder blends. The microstructure, microhardness and dry sliding wear resistance of the coating were evaluated. Results indicate that the plasma transferred arc clad ceramal composite coating has a rapidly solidified microstructure consisting of blocky primary （Cr, Fe）7C3 and the interblocky （ Cr, Fe）7C3/γ-Fe eutectics and is metallurgically bonded to the 0.45%C carbon steel substrate. The ceramal composite coating has high hardness and excellent wear resistance under dry sliding wear test condition.

关键词： plasma transferred arc ( PTA ) cladding ( Cr Fe )7C3/γ-Fe coating,microstructure wear

Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William J.Flerlage mark l.Dell’Acqua Brian m.Cox Fereshteh S.Nugent Uniformed Services University of the Health Sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(Simmons et al.,2024).Diverse sets of distinct molecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through complex interactions organized by numerous multivalent protein scaffolds,including the family of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

Rooftop photovoltaic （PV） halls： Achieving economic energy demand systems for industrial benefit via lowering

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Frontiers of Architectural Research 2012年第4期1卷 326-333页

作者： Bruno lee marija Trcka Jan l.m. Hensen materials innovation institute (m2i) Delft 2628 The Netherlands Department of the Built Environment Eindhoven University of Technology (TU/e) Eindhoven 5612 AZ The Netherlands

Industrial hails are characterized with their retatively high roof-to-floor ratio, which facilitates ready deployment of renewable energy generation, such as photovoltaic （PV） systems, on the rooftop. To promote deployment of renewable energy generation, feed-in tariff （FIT） higher than the electricity rate is available in many countries to subsidize the capital investment. FIT comes in different forms. For net FIT, in order to maximize the economic benefit, surplus electridty generation at each hour is desirable. One way to achieve surplus electricity generation is by increasing generation capacity, which is synonymous to higher capital investment. In fact, surplus electricity generation can also be achieved by lowering the energy demand of the building. This particularly the case for industrial hatls, which are usually subject to high energy demand for space conditioning in order to remove the excess heat gain due to the many power-intensive processes. Building energy performance simulation toots can be used to explore the different building design options that could lower the energy demand. In this paper, single-objective optimization on investment return will be deployed to study the cost effectiveness among different options in lowering energv demand. It Will-be demonstrated with a case study of a warehouse.

关键词： Industrial halls Photovoltaic PV systems Cost-benefit analysis Energy performancesimulation Optimization Energy demand

microstructure Dependent Fatigue Cracking Resistance of Ti-6.5Al-3.5mo-1.5Zr-0.3Si Alloy

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Journal of materials Science & Technology 2012年第7期28卷 614-621页

作者： Z.m. Song l.m. lei B. Zhang X. Huang G.R Zhang Shenyang National laboratory for materials Science Institute of Metal Research Chinese Academy of SciencesShenyang 110016 China AVIC Commercial Aircraft Engine Co. Ltd. Shanghai 200241 China Titanium Alloys laboratory Beijing Institute of Aeronautical Materials Beijing 100095 China Key laboratory for Anisotropy and Texture of materials of ministry of Education School of Materials and MetallurgyNortheastern University Shenyang 110819 China

Fatigue cracking behavior from a notch was investigated at room temperature for ***-3.5mo-1.5Zr- 0.3Si （TClI） alloys with four different microstructures obtained at different cooling rates from the β transus temperature. It was found that the alloy with l.m.llar structures consisting of α/β l.m.llae or acicular α＇ martensite laths had a higher fatigue crack initiation threshold from the notch, while the bimodal structure with coarse a grain had a lower fatigue cracking resistance. The alloy with α/β l.m.llar structure showed a higher fatigue crack growth resistance. The length scales of the microstructures were characterized to correlate with fatigue cracking behavior. Fatigue cracking mechanism related to microstructures was discussed.

关键词： Ti alloy Fatigue crack initiation Crack propagation microstructure

Getting physical with medical education:Exercise based virtual anatomy review classes for medical students

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World Journal of methodology 2025年第1期15卷 20-25页

作者： Nadeesha R Samarasinghe Taniya S Nagpal.m.chele l barbeau Charys m martin Division of General Surgery Faculty of MedicineUniversity of British ColumbiaVancouver V6T 1Z3BCCanada Faculty of Kinesiology Sport and RecreationUniversity of AlbertaEdmonton T6G 2R3ABCanada Anatomy and Cell Biology University of Western OntarioLondon N6A 3K7ONCanada Department of Anatomy and Cell Biology Schulich School of Medicine and DentistryThe University of Western OntarioLondon N6A 3K7ONCanada

The benefits of regular physical activity are well ***,few studies have examined the effectiveness of integrating physical activity(PA)into curricula within a post-secondary *** investigate the incorporation of PA into medical curricul.m.we developed a series of optional exercise-based review sessions designed to reinforce musculoskeletal.m.K)anatomy course *** synchronous sessions were co-taught by a group fitness instructor and an anatomy *** fitness instructor would lead students through both strength and yoga style exercises,while the anatomy instructor asked questions about relevant anatomical structures related to course material previously *** the sessions,participants were asked to evaluate the classes on their self-reported exam preparedness in improving mSK anatomy knowledge,PA levels,and mental *** participants completed surveys;a majority agreed that the classes increased understanding of mSK concepts(90.0%)and activity levels(97.7%).many(70.0%)felt that the classes helped reduce *** majority of respondents(90.0%)agreed that the classes contributed to increased feelings of social ***,medical students saw benefit in PA based interventions to suppl.m.nt mSK course *** with increasing activity levels and promoting health behaviours,integrating PA into medical curricul.m.may improve comprehension of learning material,alleviate stress and foster social connectivity among medical students.

关键词： medical education musculoskeletal Anatomy Exercise Online learning

Water-stable ZIF-300/Ultrason? mixed-matrix membranes for selective CO_2 capture from humid post combustion flue gas

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Chinese Journal of Chemical Engineering 2018年第5期26卷 1012-1021页

作者： muhammad Sarfraz m. ba-Shammakh Department of Pol.m.r and Process Engineering University of Engineering and Technology Lahore 54890 Pakistan Department of Chemical Engineering King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia

Water stable mixed-matrix membranes(mmms) were developed to help control the global warming by capturing and sequestrating carbon dioxide(CO_2) from post-combustion flue gas originated from burning of fossil *** of different compositions were prepared by doping glassy pol.m.r Ultrason? S 6010(US) with nanocrystals of zeolitic imidazolate frameworks(ZIF-300) in varying degrees. Solution-casting technique was used to fabricate various mmms to optimize their CO_2 capturing performance from both dry and wet gases. The prepared composite membranes indicated enhanced filler-pol.m.r interfacial adhesion, consistent distribution of nanofiller, and thermally established matrix configuration. CO_2 permeability of the membranes was enhanced as demonstrated by gas sorption and permeation experiments performed under both dry and wet conditions. As compared to neat Ultrason? membrane, CO_2 permeability of the composite membrane doped with 40 wt% ZIF-300 nanocrystals was increased by four times without disturbing CO_2/N_2 ideal selectivity. In contrast to majority of previously reported membranes, key features of the fabricated mmms include their structural stability under humid conditions coupled with better and unaffected gas separation performance.

关键词： Hydrophobic mmms ZIF-300 Gas permeation CO2 capture Permselectivity

金属配合物[mBr{(Ph_2PCH_2CH_2)_2C_6H_3}],[m=Pd(Ⅱ)、Pt(Ⅱ)]的合成及晶体结构

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无机化学学报 2001年第2期17卷 227-233页

作者：陆庆宁 Chaloupka S. Venanzi l.m. 上海应用技术学院上海200233 瑞士联邦工学院无机化学研究所

合成了一个新的双膦配位体：2 ，6 - 双（二苯基膦乙基）溴苯，通过Pd0(Dba）2 ，（Dba为PhHC= CHCOCH=CHPh）， Pt0（PPh3）4 和该配位体的氧化加成反应，分别得到了两个新的金属配合物：［mBr{(Ph_2PCH_2CH_2)_2C_6H_3}］,[m＝Pd(Ⅱ)... 详细信息

合成了一个新的双膦配位体：2 ，6 - 双（二苯基膦乙基）溴苯，通过Pd0(Dba）2 ，（Dba为PhHC= CHCOCH=CHPh）， Pt0（PPh3）4 和该配位体的氧化加成反应，分别得到了两个新的金属配合物：［mBr{(Ph_2PCH_2CH_2)_2C_6H_3}］,[m＝Pd(Ⅱ)、Pt(Ⅱ)］(2)，并进行了31P NmR，1 H NmR表征。通过X．射线晶体结构测定，这两个配合物的晶体学参数分别为：配合物（1）的晶体属正交晶系，空间群 Pna21， a＝16．806（2）A，b=18．578（2）A，C＝9．643（5）A；配合物（2）的晶体属单斜晶系，空间群p21／a，a＝12．364（3）A，b＝17.676（4）A，C=13．672（7）A，P=94．86（3）“。

关键词：螯形双膦配体钯(Ⅱ) 铂(Ⅱ) 配合物合成晶体结构

Coating of bioactive glass on magnesium alloys to improve its degradation behavior: Interfacial aspects

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Journal of magnesium and Alloys 2020年第4期8卷 999-1015页

作者： V.S.Yadav m.R.Sankar l.m.Pandey centre for the environment indian institute of technology guwahatiassam781039india department of mechanical engineering indian institute of technology guwahatiassam781039india department of mechanical engineering indian institute of technology tirupatiandhra pradesh517506india department of biosciences and bioengineering indian institute of technology guwahatiassam781039india

The preferable mechanical properties of mg alloys along with excellent compatibility with human bone have established their applicability as implant ***,a higher corrosion/degradation rate of mg alloys in body fluids l.m.ts its biomedical *** this direction,surface modification and coating are explored as appropriate strategies to mode the degradation rate of mg *** constituents of bioactive glass(BG)provide strength,bio-inertness and bone bonding ***,researchers have explored the coating of BG on mg alloys and investigated chemical.m.chanical and biological properties of the coated *** this review,we have made an attempt to compile the literature works done on the coating of BG on mg alloys and its *** interfacial aspects of the coated substrates towards the degradation behavior are *** way forward to further improve the coating characteristics of BG coated mg alloys are remarked.

关键词： Bioactive glass magnesium alloys Adhesion strength Coating thickness Wettability Degradation