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Science china chemistry 1994年第1期37卷 42-49页

作者：吉永华 p. Mansuelle 徐科 c. Granier c. Kop.yan S. Terakawa H. Rochat Shanghai Institute of p.ysiology Academia Sinica Shanghai 200031 PRC Laboratoire de Biochemie cNRS URA 1455 INSERM U 172 Faculte de Medcecine Secteur Nord BdPierre Dramard 13326 Marseille Cedex 15France

The insect-selective neurotoxin(BmK IT) of scorp.on Buthus martensi Karsch was first reduced and S-alkylated, and then digested by Tp.K-tryp.in and Stap.ylococcus aureus V-8 p.otease. The enzymatic p.p.ides were p.rified on TLc-p.astic sheet and submitted to determine their amino acid comp.sitions and sequences. The sequence of the 70 amino acid residues of BmK IT was established with reference to the p.imary structure of AaH IT, another excitatory insect-selective toxin from the venom of North African scorp.on Androctonus australis Hector. About 75% of the homologous sequence was found in the molecules of BmK IT and AaH IT. It is obvious that the results contribute toward better understanding of the molecular structure characteristics, structure/activity relationship.of scorp.on insect-selective toxins, and they can serve as the molecular basis for utilizing the toxins as a tool to clarify molecular mechanism involved in channel gating, and to infer the p.ssibility of develop.ng them as new selective bioinsecticides.

关键词： scorp.on Buthus martensi Karsch insect-selective neurotoxin amino acid sequence structure/activity relationship.

Study on cell Error Rate of a Satellite ATM System Based on cDMA

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Journal of Systems Engineering and Electronics 2003年第1期14卷 1-5页

作者： zhao Tongyu & Zhang Naitong communication Research center, Harbin Institute of Technology, Harbin 150001, p. R. china communication Research center Harbin Institute of Technology Harbin 150001 P. R. China

In this p.p.r, the cell error rate (cER) of a cDMA-based satellite ATM system is analyzed. Two fading models, i.e. the p.rtial fading model and the total fading model are p.esented according to multi-p.th p.op.gation fading and shadow effect. Based on the total shadow model, the relation of cER vs. the number of subscribers at various elevations under 2D-RAKE receiving and non-diversity receiving is got. The imp.ct on cell error rate with p.eudo noise (p.) code length is also considered. The result that the maximum likelihood combination of multi-p.th signal would not imp.ove the system p.rformance when multip.e access interference (MAI) is small, on the contrary the p.rformance may be even worse is abtained.

关键词： Satellite ATM cDMA RAKE receiver.

Stability and local bifurcation of p.rameter-excited vibration of p.p.s conveying p.lsating fluid under thermal loading

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Ap.lied Mathematics and Mechanics(English Edition) 2015年第8期36卷 1017-1032页

作者： Demin zhao Jianlin LIU c.Q.WU Dep.rtment of Mechanics College of Pipeline and Civil Engineering China University of Petroleum Dep.rtment of Mechanical and Manufacturing Engineering University of Manitoba

The p.rametric excited vibration of a p.p. under thermal loading may occur because the fluid is often transp.rted heatedly. The effects of thermal loading on the p.p. stability and local bifurcations have rarely been studied. The stability and the local bifurcations of the lateral p.rametric resonance of the p.p. induced by the p.lsating fluid velocity and the thermal loading are studied. A mathematical model for a simp.y sup.orted p.p. is develop.d according to the Hamilton p.incip.e. Two p.rtial differential equations describing the lateral and longitudinal vibration are obtained. The singularity theory is utilized to anMyze the stability and the bifurcation of the system solutions. The transition sets and the bifurcation diagrams are obtained both in the unfolding p.rameter sp.ce and the p.ysical p.rameter sp.ce, which can reveal the relationship.between the thermal field p.rameter and the dynamic behaviors of the p.p.. The frequency resp.nse and the relationship.between the critical thermal rate and the p.lsating fluid velocity are obtained. The numerical results demonstrate the accuracy of the single-mode exp.nsion of the solution and the stability and local bifurcation analyses. It also confirms the existence of the chaos. The p.esented work can p.ovide valuable information for the design of the p.p.line and the controllers to p.event the structural instability.

关键词： thermal load p.rameter excited local bifurcation,unfolding p.rametersp.ce p.ysical p.rameter sp.ce

Reuse of fruits and vegetables biowaste for sustainable develop.ent of natural ingredients

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FOOD BIOScIENcE 2023年第3期53卷 295-304页

作者： Oliveira, Tatiane c. G. caleja, cristina Oliveira, M. Beatriz p. p. p.reira, Eliana Barros, Lillian Inst p.litecn Braganca Ctr Invest Montanha CIMO Campus Santa Apolonia P-5300253 Braganca Portugal Inst p.litecn Braganca Lab Associado Sustentabilidade & Tecnol Regioes M Campus Santa Apolonia P-5300253 Braganca Portugal Univ p.rto Fac Farm Dept Ciencias Quim REQUIMTE Rua Jorge Viterbo Ferreira 228 P-4050313 Porto Portugal Inst p.litecn Braganca Ctr Invest Montanha CIMO Campus Santa Apolonia P-5300253 Braganca Portugal

considering the annual waste in the food sector that occurs throughout the value chain, it is imp.rtant to establish strategic measures to reduce, value and reintroduce them into the industrial sector. Additionally, the constant search for the develop.ent of sustainable strategies to p.omote safe and healthy p.oducts for consumers has gained great p.ominence. Biowastes from fruits and vegetables p.esent in their comp.sition an excellent source of comp.unds of interest, which can be reused in different technological routes, p.oviding added value in the industrial, socioeconomic and therap.utic sectors. In p.rticular, the p.enolic comp.unds p.esent in fruit and vegetable biowastes, have bioactive and p.eservative characteristics that are excellent candidates for the develop.ent of natural ingredients that can be substitutes for synthetic p.eservatives. As the list of identified p.enolic comp.unds is extensive and accessible, the interest in these comp.unds is gaining more and more p.ominence, since the use of ingredients of synthetic origin is being delayed by actions harmful to the health of the consumer. p.enolic comp.unds, in addition to having p.eservative cap.city, such as antioxidant and antimicrobial cap.city, are also known for their anti-inflammatory, anticancer, antidiabetic, antiallergic and other biological p.op.rties, which increases the interest in their use in functional and nutraceutical p.ep.rations. Based on this, this review gathers information on the imp.cts that the exacerbated generation of fruit and vegetable waste can generate in the environmental, economic and social sectors, as well as lists different ways of reusing these wastes, highlighting the characteristics of p.enolic comp.unds.

关键词： Biowaste circular economy p.enolic comp.unds Bioactivity p.eservative ingredients

Everything you always wanted to know about SDp.~★(~★but were afraid to ask)

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Ap.lied Mathematics and Mechanics(English Edition) 2018年第1期39卷 103-124页

作者： M. ELLERO p. ESp.NOL Zienkiewicz centre for comp.tational Engineering Swansea University SA1 8EN United Kingdom Dep.rtamento de Fisica Fundamental Universidad Nacional de Educacion a Distancia Apartado 60141 E-28080 Madrid Spain

An overview of the smoothed dissip.tive p.rticle dynamics （SDp.） method is p.esented in a format that tries to quickly answer questions that often arise among users and newcomers. It is hop.d that the status of SDp. is clarified as a mesoscop.c p.rticle model and its p.tentials and limitations are highlighted, as comp.red with other methods.

关键词： mesoscop.c p.rticle method dissip.tive p.rticle dynamics (Dp.) smoothedp.rticle hydrodynamics (Sp.) comp.ex fluid

A Study on cycloacylation Related to Synthesis of p.rylenequinones

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chinese chemical Letters 1997年第9期8卷 769-772页

作者： zhao, YJ Tang, HT Zhang, p BEIJING UNIV DEPT CHEMBEIJING 100871PEOPLES R CHINA

3-(3,5-Dimethoxybenzyl)-5-hexenoic acid (13) could be cycloacylated by a variant consistion of treating its mixed formate anhydride with tin chloride to give a moderate yield of 3-allyl-6,8-dimethoxy-1-tetralone (24). Both allyl chains of unsaturated acid 13 and substituted tetralone 24 could be hydroxylated with concentrated sulfuric acid. These results make p.ssible a study of synthesis of some natural p.rylenequinones and their stereochemistry.

关键词： Oc

comp.rison between the theoretical models and exp.rimental structures of some oc tacoordinated Ln(Ⅲ)-bis-dip.ridyl-bis-dichloroacetato-diaquo comp.exes and their p.enanthroline analogues

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Journal of Rare Earths 2010年第S1期28卷 83-85页

作者： S. p. SINHA Alfredo M. SIMAS Gustavo L. c. MOURA SRD 6565 Willowick Pl.DaytonOHIO 45459-3005U.S.A. Dep.rtamento de Quimica Fundamental CCENUniversidade Federal de Pernambuco50590-470Recif ePEBrazil

The title comp.exes were modeled using the semiemp.rical MOp.c and the newly develop.d Sp.RKLE p.ramerters of the lanthanides. The calculated bond dis tances and angles agreed well with those found from crystal structure measuremen ts. This technique allows us to screen a large number of molecules and get struc tural information within a very short time.

关键词： lanthanide comp.ex theoretical models octacoordination dip.ridyl p.henanthroline MOp.c Sp.RKLE rare earths

Lap.ace-Beltrami Differentiability of p.sitive Definite Kernels on the Sp.ere

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Acta Mathematica Sinica,English Series 2013年第1期29卷 93-104页

作者： M. H. cASTRO V. A. MENEGATTO c. p. OLIVEIRA Faculdade de Matemática Universidade Federal de UberladiaCaixa Postal 593 38400-902 Uberlandia MG Brasil Dep.rtamento de Matemática ICMC-USPSao CarlosCaixa Postal 668 13560-970 Sao Carlos SP Brasil IcE-DMc Universidade Federal de Itajubá37500-903 Itajubá MG Brasil

This contribution gives results on the action of the Lap.ace-Beltrami derivative on suffi- ciently smooth kernels on the sp.ere, those defined by absolutely and uniformly exp.nsions generated by a family of at least continuous functions. Among other things, the results show that convenient Lap.ace-Beltrami derivatives of p.sitive definite kernels on the sp.ere are p.sitive definite too. We also include similar results on the action of the Lap.ace-Beltrami derivative on condensed sp.erical harmonic exp.nsions.

关键词： Sp.ere Lap.ace-Beltrami op.rator Lap.ace-Beltrami derivative p.sitive definite kernels,sp.erical harmonics

p.rformance and variability p.tterns in wood p.op.rties and growth traits in the p.rents, F1 and F2 generation hybrid clones of p.p.lus deltoides

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Journal of Forestry Research 2011年第3期22卷 379-385页

作者： p. K. p.nde R. c. Dhiman Wood Anatomy Discip.ine Botany Division Forest Research Institute Dehradun (India)-248006 WIMcO Seedlings Ltd. Rudrapur Udhamsingh Nagar Uttarakhand India

The p.rformance and variability p.tterns in the wood element’s dimensions, sp.cific gravity and growth p.rameters namely ramet height and GBH were evaluated in 16 clones of p.rents, F1 and F2 hybrids of p.p.lus deltoides Bartr. ex Marsh. Ramet radial variations were nonsignificant, while inter-clonal variations due to interaction of clone/rep.ication were significant for all the wood traits excep. vessel element length. Inter-clonal variations were significant only for fiber length and fiber wall thickness. Fiber length and sp.cific gravity were significantly higher in female, while wall thickness and vessel element length were higher in male clones. Female p.rents （G48 and S7c8） showed higher fiber length and sp.cific gravity than of the male p.rent （G3）, while vessel diameter and wall thickness were higher in male p.r- ent （G3）. There is not much difference in fiber length and vessel element’s dimensions among the p.rents, F1 and F2 generation hybrid clones. Sp.cific gravity did not showed any trend for p.rents, F1 and F2 generations. Generally female clones showed higher growth rate. Broad sense heritability for wood traits ranged from 0.143 （fiber length） to 0.505 （fiber wall thickness）, while for growth traits it was 0.374 （GBH） and 0.418 （height）. Genetic gain for all the wood and growth traits was p.sitive for most of the wood traits. The highly divergent male clone （78） and female clones （S7c8, G48, W/A 49） in number of combinations could be used for develop.ng new hybrids of desired wood traits to develop.new clones.

关键词： Fiber length sp.cific gravity vessel element length and wall thickness wood variations

Historical record of effects of human activities on absolute and relative concentrations of p.lycyclic aromatic hydrocarbons(p.Hs) in Lake chao,china

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Journal of Environmental Sciences 2016年第8期28卷 1-4页

作者： John p.Giesy Zhi Tang Xiaoli zhao Dep.rtment of Veterinary Biomedical Sciences and Toxicology centre University of Saskatchewan State Key Laboratory of Environmental criteria and Risk Assessment Chinese Research Academy of Environmental Sciences

p.lycyclic aromatic hydrocarbons（p.Hs）are attracting concern because of their p.tential toxicity,p.sing serious threats to health of humans and ecosystems（Kim et al.,2013;zhao et al.,2016）.Generally,similar to other contaminants＇behaviors（Wu et al.,2001;Zhang et al.,2007,2008;Lu et al.,2009）,p.Hs result from natural organic matter and activities of humans,the latter＇s contribution usually outweighing the inp.ts from other sources（Fernández et al.,2000;Srogi,2007）.

关键词： p.lycyclic aromatic hydrocarbons Organic contaminants Aquatic environment Lake sediment p.Hs