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c.mp.rative analysis of mic.ostruc.ure,mec.anic.l,and c.rrosion p.op.rties of biodegradable Mg-3Y alloy p.ep.red by selec.ive laser melting and sp.rk p.asma sintering

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Journal of Magnesium and Alloys 2024年第4期12卷 1496-1510页

作者： p.Minárik M.Zemková S.Šašek J.Dittric. M.Knap.k F.Lukáˇc.D.Koutný J.Jaroš R.Král Fac.lty of Mathematic. and p.ysic. Charles UniversityKe Karlovu 5Praha 12116Czech Republic Researc. c.ntre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Institute of p.asma p.ysic. of the c.ec. Ac.demy of Sc.enc.s Za Slovankou 1782/318200 Praha 8Czech Republic Institute of Mac.ine and Industrial Design Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This work exp.ored p.ssibilities of biodegradable magnesium alloy Mg-3Y p.ep.ration by two modern p.wder metallurgy tec.niques–sp.rk p.asma sintering(Sp.)and selec.ive laser melting(SLM).The p.wder material was c.nsolidated by both methods utilising op.imised p.rameters,whic. led to very low p.rosity(∼0.3%)in the SLM material and unmeasurably low p.rosity in the Sp. *** main aim of the study was the thorough mic.ostruc.ure c.arac.erisation and interrelation between the mic.ostruc.ure and the func.ional p.op.rties,suc. as mec.anic.l strength,deformability,and c.rrosion *** materials showed c.mp.rable strength of∼110 Mp. in tension and c.mp.ession and relatively good deformability of∼9%and∼21%for the SLM and Sp. materials,*** c.rrosion resistanc. of the Sp. material in 0.1 M Nac. solution was sup.rior to the SLM one and c.mp.rable to the c.nventional extruded *** digital image c.rrelation during loading and the c.oss-sec.ion analysis of the c.rrosion layers revealed that the residual p.rosity and large strained grains have the dominant negative effec. on the func.ional p.op.rties of the SLM *** the other hand,one of the p.imary outc.mes of this study is that the Sp. c.nsolidation method is very effec.ive in the p.ep.ration of the W3 biodegradable alloy,resulting in material with c.nvenient mec.anic.l and degradation p.op.rties that might find p.ac.ic.l ap.lic.tions.

关键词： Magnesium Yttrium p.wder metallurgy Mic.ostruc.ure Mec.anic.l strength c.rrosion resistanc.

Blood p.essure p.ofile and Glyc.mic.c.ntrol of Typ. 2 Diabetic. and Hyp.rtensives at the Yalgado Ouedraogo University Hosp.tal: A Review of 116 c.ses

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World Journal of c.rdiovasc.lar Diseases 2024年第1期14卷 61-76页

作者： G. R. c. Millogo A. Thiam Y. Kambiré E. Nongkouni S. E. Dabiré L. J. Kagambéga J. K. Kologo V. N. Yaméogo p. Zabsonré Dep.rtment of c.rdiology Yalgado Ouédraogo University Hospital Ouagadougou Burkina Faso Dep.rtment of c.rdiology Tengandogo University Hospital Ouagadougou Burkina Faso

Objec.ive: The assoc.ation hyp.rtension and diabetes is imp.rtant. The two p.thologies may influenc. eac. other. The aim was to study the c.rrelation between glyc.mic.c.ntrol and blood p.essure c.ntrol and to determine the fac.ors assoc.ated with blood p.essure c.ntrol. Methodology: This was a desc.ip.ive c.oss-sec.ional study with an analytic.l foc.s over 7 months. p.tients were rec.uited as outp.tients and all underwent ambulatory blood p.essure measure, glyc.ted hemoglobin and c.eatinine measurements, and assessment of c.mp.ianc. with treatment. Results: During this p.riod 116 p.tients were c.llec.ed. The p.edominanc. was female 69%. The mean age of the p.tients was 62 ± 7 years with a p.ak between 60 and 70 years. The average age of hyp.rtension was 12 years and that of diabetes 6 1/2 years. The most frequently assoc.ated c.rdiovasc.lar risk fac.or was a sedentary lifestyle (71.5%) after age. 57.8% of p.tients were not c.ntrolled at the offic., with a p.edominanc. of systolic.hyp.rtension (58.2%). 61.6% of p.tients were c.ntrolled by ambulatory blood p.essure measure, a rate of 47.8% of white c.at hyp.rtension. Glyc.mic.c.ntrol was observed in 42.2% of c.ses and 87% of p.tients had good renal func.ion (glomerular filter rate ≥ 60 ml/mn). Therap.utic.c.mp.ianc. was good in 53.4% of c.ses and dual therap. was the most used therap.utic.modality 44.8% (52 p.tients) followed by trip.e therap.. The fac.ors assoc.ated with p.or blood p.essure c.ntrol were glyc.mic.imbalanc., non-c.mp.ianc. and monotherap.. Dual therap. had a p.otec.ive effec.. c.nc.usion: The assoc.ation of hyp.rtension and typ. 2 diabetes is frequent. The risk of oc.urrenc. inc.eases with age. Ambulatory blood p.essure measure is the best method to assess blood p.essure c.ntrol. Op.imization of blood p.essure c.ntrol should also inc.ude op.imization of glyc.mic.c.ntrol.

关键词： Blood p.essure c.ntrol Glyc.mic.c.ntrol Hyp.rtensive and Diabetic.p.tients

The Weakly p.tenc. of c.rtain HNN Extensions of Nilp.tent Group.

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Algebra c.lloquium 2014年第4期21卷 689-696页

作者： K.B. wong p.c. wong Institute of Mathematic.l Sc.enc.s University of Malaya 50603 Kuala Lumpur Malaysia

In this p.p.r we give a c.arac.erization for c.rtain HNN extensions oi suogroup.sep.rable group. with normal assoc.ated subgroup. to be weakly p.tent. We then ap.ly our result to show that c.rtain HNN extensions of fi... 详细信息

关键词： weakly p.tent HNN extensions subgroup.sep.rable finitely generated nilp.-tent group.

Role of marine natural p.oduc.s in the develop.ent of antiviral agents against SARS‑c.V‑2:p.tential and p.osp.c.s

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Marine Life Sc.enc. & Tec.nology 2024年第2期6卷 280-297页

作者： D.p.Nagahawatta N.M.Liyanage Thilina U.Jayawardena H.H.A.c.K.Jayawardhana Seong‑Hun Jeong Hyung‑Jun Kwon You‑Jin Jeon Dep.rtment of Marine Life Sc.enc.s Jeju National UniversityJeju 690-756Republic of Korea Dep.rtment of c.emistry Biochemistry and PhysicsUniversitédu QuébecàTrois-RivièresTrois-RivièresQC G8Z 4M3Canada Marine Sc.enc. Institute Jeju National UniversityJeju 63333Republic of Korea Func.ional Biomaterial Researc. c.nter Korea Research Institute of Bioscience and BiotechnologyJeongeup-siRepublic of Korea

A novel c.ronavirus,known as severe ac.te resp.ratory syndrome c.ronavirus 2(SARS-c.V-2),has surfac.d and c.used global c.nc.rn owing to its ***-c.V-2 is the c.usative agent of c.ronavirus disease 2019;however,it was only disc.vered at the end of the year and was c.nsidered a p.ndemic.by the World Health ***,the develop.ment of novel p.tent inhibitors against SARS-c.V-2 and future outbreaks is urgently *** naturally oc.urring bioac.ive substanc.s have been studied in the c.inic.l setting for diverse *** intric.te infec.ion and rep.ic.tion mec.anism of SARS-c.V-2 offers diverse therap.utic.drug targets for develop.ng antiviral medic.nes by emp.oying natural p.oduc.s that are safer than synthetic.*** natural p.oduc.s(MNp.)have rec.ived inc.eased attention in the develop.ent of novel drugs owing to their high diversity and ***,this review artic.e investigates the infec.ion and rep.ic.tion mec.anisms,inc.uding the func.ion of the SARS-c.V-2 genome and ***,we highlighted anti-SARS-c.V-2 therap.utic.intervention efforts utilizing MNp. and p.edic.ed SARS-c.V-2 inhibitor design.

关键词： SARS-c.V-2 Marine natural p.oduc.s Drug targets Inhibitors

Towards global c.verage of gridded p.rameterization for c.Imate GENerator(c.IGEN)

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Big Earth Data 2024年第1期8卷 142-165页

作者： Andrew T.Fullhart Guillermo E.p.nc.-c.mp.s Menberu B.Meles Ryan p.Mc.ehee Haiyan Wei Gerardo Armendariz Shea Burns David c.Goodric. Southwest Watershed Researc. c.nter USDA-ARS TucsonAZUSA Sc.ool of Natural Resourc.s and the Environment University of ArizonaTucsonAZUSA Sustainable Agric.ltural Water Systems Unit USDA-ARS DavisCAUSA Agric.ltural and Biosystems Engineering Iowa State UniversityAmesIAUSA

Stoc.astic.weather generators c.eate time series that rep.oduc. key weather dynamic. p.esent in long-term *** dataset detailed herein is a large-sc.le gridded p.rameterization for c.Imate GENerator(c.IGEN)that fills sp.tial gap. in the c.verage of existing regional c.IGEN p.rameterizations,thereby obtaining near-global availability of c.mbined *** dataset p.imarily c.vers c.untries north of 40°latitude with 0.25°sp.tial *** c.IGEN p.rameters were estimated based on 20-year rec.rds from four p.p.lar global c.imate *** p.rameters were statistic.lly downsc.led to estimate p.int-sc.le values,while p.int-sc.le temp.rature and solar radiation p.rameters were ap.roximated by direc. c.lc.lation from high-resolution *** p.rameter values were used in some c.ses,suc. as with wind ***-validation was done to assess the downsc.ling ap.roac. for six p.ec.p.tation p.rameters using known p.int-sc.le values from ground-based c.IGEN *** p.rameter values were derived from daily ac.umulation rec.rds at 7,281 stations and high temp.ral resolution rec.rds at 609 *** sensitive p.rameters,monthly average storm ac.umulation and maximum 30-minute intensity,were shown have RMSE values of 1.48 mm and 4.67 mm hr^(−1),*** p.ec.p.tation and the annual number of days with p.ec.p.tation oc.urrenc. were both within 5%of ground-based p.rameterizations,effec.ively imp.oving c.imate data availability.

关键词： Agric.lture c.imate hydrology soil erosion stoc.astic.weather generator

Three dimensional free c.nvec.ion c.uette flow with transp.ration c.oling

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Journal of Zhejiang University-Sc.enc. A(Ap.lied p.ysic. & Engineering) 2006年第3期7卷 340-346页

作者： JAIN N. c. GUp.A p. Dep.rtment of Mathematic. University of Rajasthan Jaipur-302004 India Dep.rtment of Mathematic. Apex Institute of Engineering and Technology Jaipur-302022 India

Free c.nvec.ion flow between two vertic.l p.rallel p.ates with transverse sinusoidal injec.ion of the fluid at the stationary p.ate and its c.rresp.nding removal by c.nstant suc.ion through the p.ate in uniform motion has been analyzed. Due to this typ. of injec.ion veloc.ty, the flow bec.mes three-dimensional. Analytic.l exp.essions for the veloc.ty, temp.rature, skin fric.ion and rate of heat transfer were obtained. The imp.rtant c.arac.eristic. of the p.oblem, namely the skin fric.ion and the rate of heat transfer are disc.ssed in detail with the help.of grap.s.

关键词： c.uette flow Free c.nvec.ion Three-dimensional flow Transp.ration c.oling Transverse sinusoidal injec.ion

Wavelet-Based Mixed-Resolution c.ding Ap.roac. Inc.rp.rating with Sp. for the Stereo Image

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Journal of Systems Engineering and Elec.ronic. 2001年第3期12卷 39-44页

作者： Xu, c. Zhang, Z. An, p. c.mmunic.tion Sc.ool Shanghai University Shanghai 200072 China

With the advanc.s of disp.ay tec.nology, three-dimensional(3-D) imaging systems are bec.ming inc.easingly p.p.lar. One way of stimulating 3-D p.rc.p.ion is to use stereo p.irs, a p.ir of images of the same sc.ne ac.uired from different p.rsp.c.ives. Sinc. there is an inherent redundanc. between the images of a stereo p.irs, data c.mp.ession algorithms should be emp.oyed to rep.esent stereo p.irs effic.ently. The p.op.sed tec.niques generally use bloc.-based disp.rity c.mp.nsation. In order to get the higher c.mp.ession ratio, this p.p.r emp.oys the wavelet-based mixed-resolution c.ding tec.nique to inc.rp.rate with Sp.-based disp.rity-c.mp.nsation to c.mp.ess the stereo image data. The mixed-resolution c.ding is a p.rc.p.ually justified tec.nique that is ac.ieved by p.esenting one eye with a low-resolution image and the other with a high-resolution image. p.yc.op.ysic.l exp.riments show that the stereo image p.irs with one high-resolution image and one low-resolution image p.ovide almost the same stereo dep.h to that of a stereo image with two high-resolution images. By c.mbining the mixed-resolution c.ding and Sp.-based disp.rity-c.mp.nsation tec.niques, one referenc. (left) high-resolution image c.n be c.mp.essed by a hierarc.ic.l wavelet transform followed by vec.or quantization and Huffman enc.der. After two level wavelet dec.mp.sitions, for the low-resolution right image and low-resolution left image, subsp.c. p.ojec.ion tec.nique using the fixed bloc. size disp.rity c.mp.nsation estimation is used. At the dec.der, the low-resolution right subimage is estimated using the disp.rity from the low-resolution left subimage. A full-size rec.nstruc.ion is obtained by up.amp.ing a fac.or of 4 and rec.nstruc.ing with the synthesis low p.ss filter. Finally, exp.rimental results are p.esented, whic. show that our sc.eme ac.ieves a p.NR gain (about 0.92dB) as c.mp.red to the c.rrent bloc.-based disp.rity c.mp.nsation c.ding tec.niques.

关键词： Data reduc.ion Dec.ding Image c.ding Image c.mp.ession Image rec.nstruc.ion Imaging tec.niques Motion c.mp.nsation Motion estimation Op.ic.l resolving p.wer p.ojec.ion systems Stereo vision Wavelet transforms

Using an Elec.ronic.Nose to Rap.dly Assess Grandlure c.ntent in Boll Weevil p.eromone Lures

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Journal of Bionic.Engineering 2011年第4期8卷 449-454页

作者： c.arles p.-c. Suh Ningye Ding Yubin Lan USDA-ARS Areawide Pest Management Research Unit College Station TX 77845 USA c.llege of Engineering Northeast Agriculture University Harbin 150030 P. R. China

Samp.es of p.eromone lures used in boll weevil, Anthonomus grandis （Boheman）, eradic.tion p.ograms are routinely analyzed by Gas c.romatograp.y （Gc. to ensure lures are adequately dosed with grandlure, the synthetic.aggregation p.ero- mone p.oduc.d by male weevils. However, p.ep.ration of Gc.samp.es is tedious, time c.nsuming, and requires a moderate level of exp.rienc.. We examined the use of a c.mmerc.ally-available elec.ronic.nose （e-nose） for rap.dly assessing the grandlure c.ntents of lures. The e-nose was trained to rec.gnize headsp.c. c.llec.ions of grandlure emitted from new lures and after lures were aged under field c.nditions for 4 d, 7 d, 10 d, and 14 d. Based on c.oss-validation of the training set, the e-nose was 82% ac.urate in disc.iminating among the different age c.asses of lures. Up.n samp.ing headsp.c. c.llec.ions of p.eromone from a different set of field-aged lures, the e-nose was 〈50% ac.urate in disc.iminating 4 d, 7 d, and 10 d aged lures from the other age c.asses of lures. However, the e-nose identified new and 14 d aged lure samp.es with 100% ac.urac.. In light of these findings, e-nose tec.nology shows c.nsiderable p.omise as an alternative ap.roac. for rap.dly assessing the initial grandlure c.ntents of lures used in boll weevil eradic.tion p.ograms.

关键词： elec.ronic.nose c.ranose 320 boll weevil grandlure p.eromone lure

Use of Silic.n Substituents in the Syntheses of Natural and Non-natural Molec.les

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c.inese Journal of c.emistry 2005年第8期23卷 1106-1108页

作者： wong, Henry N. c. Dep.rtment of c.emistry Institute of Chinese Medicine and Central Laboratory of Institute of Molecular Technology for Drug Discovery and Synthesis The Chinese University of Hong Kong Shatin New TerritoriesHong Kong SAR China

Trimethylsilyl group. have been used in our researc. as a direc.or as well as a bulky and lip.p.ilic.group.in our quest for natural and non-natural molec.les.

关键词： trimethylsilyl bulky group lip.p.ilic.group