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EFFECT OF NANOCRYsTAllIZATION ON THE sCAlING OF NiAl AT 1000℃ IN AIR

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Acta Metallurgica sinica(English letters) 2002年第1期15卷 77-80页

作者： s.l. Yang Fuhui Wang s.l. Zhu Inst. of Metal Res. Chinese Acad. of Sci. Shenyang 110016 China

The oxidation behavior of a magnetron sputtered nanocrystalline NiAl coating was investigated at 1000℃ in air. Comparing with cast NiAl and NiAl-0.1at.%Y alloys reveals influences of nanocrystallization as well as yttrium addition on the oxidation behavior of NiAl. Res.l.s show that a phase transformation from metastable θ-Al2O3 to stable a-Al2O3 occurred in scales, which was accelerated by the microcrystallization and retarded by the addition of Y. The addition of Y as well as the nanocrystallization reduced the void formation at the interface between the scale and the substrate.

关键词： nanocrystalline NiAl NiAlY oxidation

EFFECT OF ElECTROlEss DEPOsITION CONDITIONs ON THE sTRUCTUREs AND THE MAGNETIC PERFORMANCEs OF THE Co-Fe-P AllOY

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Acta Metallurgica sinica(English letters) 2006年第4期19卷 307-312页

作者： s.l. Wang F.Q. Zeng Department of Applied Chemistry College of Materials Science and Engineering Huaqiao University Quanzhou 362021 China

Electroless Co-Fe-P alloys were deposited from an alkaline bath, containing boric acid as a buffer agent and sodium citrate as a complexing agent. As a res.l., with the increase of pH of the bath, the iron content of the deposit increased, whereas the cobalt and phosphorus contents decreased. The structure of the deposit was investigated using X-ray diffraction （XRD） and transmission electron microscope （TEM）. The deposit consisted of hexahedron phase Co, cubic phase Fe-Co, and amorphous phase （crystalline）. The magnetic performances of the deposit were studied using vibrating sample magnetometer （VsM）. The more the content of Fe and the less the content of P （the content of Co being less）, the better the magnetic performances of the deposit. The Co-Fe-P deposit was suitable for use as soft magnetic material.

关键词： electroless deposition Co-Fe-P structure magnetic performance

INFlUENCE OF 2-BUTYNE-1,4-DIOl ON THE sTRUCTURE AND PERFORMANCE OF THE Co-Ni AllOY PlATED BY ElECTRODEPOsITION

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Acta Metallurgica sinica(English letters) 2008年第1期21卷 50-56页

作者： s.l. Wang l.l. Hong W.W. Yu Department of Applied Chemistry College of Materials Science and Engineering Huaqiao University Quanzhou 362021 China

The effect of 2-butyne-1, 4-diol （BD） on the deposition behavior of the Co-Ni alloy was investigated by linear sweep voltammetry. The res.l.s showed that BD could prevent the deposition of the Co-Ni alloy. The effect of BD concentration in the s.l.ate plating bath, on the structure of the Co-Ni deposit was studied by energy dispersive x-ray spectroscopy, scanning electron microscope, and X-ray diffraction, respectively. As a res.l., BD could smoothen the deposit surface and decrease the diameter of the grain, but too much of BD was not good for the size of the grain. In general, a hexagonal close-packed （hcp） phase of the Co-Ni alloy, with a preferentially oriented （110） plane, was prepared by electrodeposition in the presence of BD. The Co-Ni alloy as a catalyst for the electro-oxidation of ethanol in alkaline medium was investigated by cyclic voltammetry. The deposit plated from the bath containing BD possessed better electro-oxidation of ethanol performance compared with that of the deposit plated from only the s.l.ate plating bath, but too much of BD was not beneficial for catalytic activity. The Co-Ni film was suitable as a magnetic recording material.

关键词： Co-Ni 2-butyne-1, 4-diol (BD) Electrodeposition Electro-oxidation ethanol Magnetic property

Composition, structure and diversity characterization of dry tropical forest of Chhattisgarh using satellite data

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Journal of Forestry Research 2014年第4期25卷 819-825页

作者： Tarun Thakur s.l. swamy Ajit singh Nain Department of Forestry Indira Gandhi Agricultural University (IGAU) Raipur Chhattisgarh India

The purpose of this study was to characterize the land use, vegetation structure, and diversity in the Barnowpara sanctuary, Raipur district, Chhattisgarh, India through the use of satellite remote sensing and GIs. land cover and vegetation were spatially analyzed by digitally classifying IRs 1D lIss III satellite data using a maximum likelihood algorithm. later, the variations in structure and diversity in different forest types and classes were quantified by adopting quadratic sampling proce- dures. Nine land-cover types were delineated： teak forest, dense mixed forest, degraded mixed forest, s.l.mixed forest, open mixed forest, young teak plantation, gras.l.nds, agriculture, habitation, and water bodies. The classification accuracy for different land-use classes ranged from 71.23% to 100%. The highest accuracy was observed in water bodies and grass- land, followed by habitation and agriculture, teak forest, degraded mixed forest, and dense mixed forest. The accuracy was.l.wer in open mixed forest, and s.l.mixed forest. Res.l.s revealed that density of different forest types varied from 324 to 733 trees ha-l, bas.l.area from 8.13 to 28.87 ***-1 and number of species from 20 to 40. similarly, the diversity ranged from 1.36 to 2.98, concentration of dominance from 0.06 to 0.49, species richness from 3.88 to 6.86, and beta diversity from 1.29 to 2.21. The s.l.mixed forest type recorded the highest bas.l.area, diversity was highest in the dense mixed forest, and the teak forest recorded maximum density, which was poor in degraded mixed forests. The study also showed that Normalized Difference Vegetation Index （NDVI） was strongly cor- related to with the shannon Index and species richness.

关键词： forest shannon Index species richness Rs and GIs landuse NDVI

THERMODYNAMICs sTUDY ON THE DECOMPOsITION OF CHROMITE WITH KOH

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Acta Metallurgica sinica(English letters) 2007年第3期20卷 187-192页

作者： Z. sun s.l. Zheng Y. Zhang Institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China Graduate University of the Chinese Academy of sciences Beijing 100049 China

Institute of Process Engineering, Chinese Academy of sciences, China, has proposed a method for oxidative leaching of chromite with potassium hydroxide. Understanding the mechanism of chromite decomposition, especially in the potassium hydroxide fusion, is important for the optimization of the operating parameters of the oxidative leaching process. A traditional thermodynamic method is proposed and the thermal decomposition and the reaction decomposition during the oxidative leaching of chromite with KOH and oxygen is discussed, which suggests that chromite is mainly destroyed by reactions with KOH and oxygen. Meanwhile, equilibrium of the main reactions of the above process was calculated at different temperatures and oxygen partial pressures. The stable zones of productions, namely, K2CrO4 and Fe2O3, increase with the decrease of temperature, which indicates that higher temperature is not beneficial to thermodynamic reactions. In addition, a comparison of the general alkali methods is carried out, and it is concluded that the KOH leaching process is thermodynamically superior to the conventional chromate production process.

关键词： chromite KOH thermodynamics decomposition

ElTA-WAVE IN A sIMPlE 1-D 2 x 2 HYPERBOlIC PROBlEM

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Journal of Computational Mathematics 1996年第4期14卷 311-318页

作者： s.l. Yang(Institute of Applied Mathematics, Chinese Academy of sciences, Beijing, China) Institute of Applied Mathematics Chinese Academy of Sciences Beijing China

A simple one-dimensional 2 x 2 hyperbolic system is considered in the *** model contains a linear hyperbolic equation, as well as a hyperbolic equation ofwhich the coefficients are about the s.l.tion of the linear one. The exact s.l.tion ispresented and discussed, then numerical experiments are given by TVD (or MmB)type schemes for Riemann problems. From the res.l.s, we know that the s.l.tionsdo have δ-waves for some suitable initial data.

关键词： Zhang Figure DElTA-WAVE IN A sIMPlE 1-D 2 HYPERBOlIC PROBlEM

δ-WAVE FOR 1-D AND 2-D HYPERBOlIC sYsTEMs

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Journal of Computational Mathematics 1996年第3期14卷 256-262页

作者： s.l. Yang(Institute of Applied Mathematics, Chinese Academy of sciences, Beijing, China) 中科院应用数学所北京

Here a new kind of nonlinear wave, which is called δ-wave, is described by some high res.l.tion difference s.l.tions for Riemann problems of one-dimensional (1-D) and two-dimensional (2-D) nonlinear hyperbolic systems in conservation laws. some phenomena are numerically shown for the s.l.tions of Riemann problems for 2-D gas dynamics systems

关键词： Zhang WAVE FOR 1-D AND 2-D HYPERBOlIC sYsTEMs

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

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 Michele 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 curriculum,we developed a series of optional exercise-based review sessions designed to reinforce musculoskeletal(MsK)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 s.l.-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 supplement MsK course *** with increasing activity levels and promoting health behaviours,integrating PA into medical curriculum 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