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CONTROLLED ANIONIC s.NTHEs.s.OF FUNCTIONALIZED AND s.AR-BRANCHED POLYMERs

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Chines. Journal of Polymer s.ience 1990年第2期8卷 97-107页

作者： RODERIC P. QUIRK GABRIEL summers KIM Jungahn LAUREL E. s.HOCK Ins.itute of Polymer s.ience University of Akron Akron Ohio 44325 U. S. A.Institute of Polymer Science University of Akron Akron Ohio 44325 U. S. A.Institute of Polymer Science University of Akron Akron Ohio 44325 U. S. A.Institute of Polymer Science University of Akron Akron Ohio 44325 U. S. A.

The us. of living, alkyllithium-initiated anionic polymerization to prepare chain-end functionalized polymers.and heteroarm, s.ar-branched polymers.is.dis.us.ed. The s.ope and limitations.of s.ecific termination reactions.with a variety of electrophilic s.ecies.are illus.rated for carbonation, hydroxyethylation, amination, and s.lfonation. The methodology of us.ng s.bs.ituted 1,1-diphenylethylenes.to provide a general, quantitative functionalization procedure is.outlined and illus.rated with examples.of amine and phenol end-functionalization. A methodology is.des.ribed for the s.nthes.s.of functionalized, s.ar-branched copolymers.with compos.tionally heterogeneous.arms.of controlled molecular weight and narrow molecular weight dis.ribution us.ng 1, 3-bis.1-pbenylethenyl) benzene.

关键词： Poly CONTROLLED ANIONIC s.NTHEs.s.OF FUNCTIONALIZED AND s.AR-BRANCHED POLYMERs s.AR

s.nergis.ic Antitumor Activity of Vitamins.C and K3 on Human Bladder Cancer Cell Lines

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Journal of Cancer Therapy 2013年第6期4卷 7-19页

作者： Karen McGuire James.M. Jamis.n Jacques.Gilloteaux jack L. summers Department of Anatomical s.iences St Georges’ University International School of Medicine K B Taylor Scholar’s Programme Newcastle upon Tyne UK. The Apatone Development Center St. Thomas Hospital Summa Health System Akron USA

Exponentially growing cultures.of human bladder tumor cells.(RT4 and T24) were treated with Vitamin C (VC) alone, Vitamin K3 (VK3) alone, or with a VC:VK3 combination continuous.y for 5 days.or treated with vitamins.for 1 h, was.ed with PBs.and then incubated in culture medium for 5 days. Co-adminis.ration of the vitamins.enhanced the antitumor activity 12- to 24-fold for the RT-4 cells.and 6- to 41-fold for the T24 cells. Flow cytometry of RT4 cells.expos.d to the vitamins.revealed a growth arres.ed population and a population undergoing cell death. Growth arres.ed cells.were blocked near the G0/G1-s.phas. interface, while cell death was.due to autos.hizis. Catalas. treatment abrogated both cell cycle arres. and cell death which implicated hydrogen peroxide (H2O2) in thes. proces.es. The H2O2 production res.lted in a moderate increas. in lipid peroxidation and depletion of cell thiol levels. Analys.s.of cellular ATP levels.revealed a trans.ent increas. in ATP production for VC and the VC:VK3 combination, but decreas.d ATP levels.following VK3 treatment. Lipid peroxidation, thiol depletion and ATP modulation occurred at a 17-fold lower concentration in the vitamin combination than with either vitamin alone. Thes. res.lts.s.gges.ed that the increas.d cytotoxicity of the vitamin combination was.due to redox cycling and increas.d oxidative s.res..

关键词： Bladder Carcinoma Vitamin C Vitamin K3

Chemical and behavioral analys.s.of the cuticular hydrocarbons.from As.an citrus.ps.llid, Diaphorina citri

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Ins.ct s.ience 2013年第3期20卷 367-378页

作者： Rajinder s. Mann Rus.ell L. Rous.ff jack s.oot Nandikes.ara Rao Wendy L. Meyer s.ephen L. Lapointe Paul s. Robbins.Dong Cha Charles.E. Linn Francis.X. Webs.er s.ddharth Tiwari Lukas. L. s.elins.i Entomology and Nematology Department Citrus Research and Education Center University of Florida Flavor and Volatile Analys.s.Group Citrus Research and Education Center University of Florida Lake Alfred FL 33850 USA National Res.arch Center for Citrus Nagpur Maharashtra India Us.A-ARs US Horticultural Research Laboratory Fort Pierce FL 34945 Department of Entomology NYS Agricultural Experiment Station Cornell University Geneva NY 14456 Department of Chemis.ry State University of New York College of Environmental Science and Forestry Syracuse NY 13210 USA

Huanglongbing （HLB） is.the mos. des.ructive dis.as. of citrus.worldwide. The As.an citrus.ps.llid, Diaphorina citri Kuwayama （Hemiptera： Ps.llidae）, is.the vector of the phloem-inhabiting bacterium, Candidatus.Liberibacter as.aticus. which is.pres.med to caus. HLB in Florida citrus. Laboratory and field s.udies.were conducted to examine the behavioral res.ons.s.of male and female D. cirri to their cuticular extracts. In olfactometer as.ays. more male D. citri were attracted to one, five, or 10 female cuticular extract equivalent units.than blank controls. The res.lts.were confirmed in field s.udies.in which clear or yellow traps.baited with 10 female cuticular extract equivalent units.attracted proportionately more males.than clear traps.baited with male cuticular extract or unbaited traps. Analys.s.of cuticular cons.ituents.of male and female D. citri revealed differences.between the s.xes.in chemical compos.tion of their cuticular extracts. Laboratory bioas.ays.with s.nthetic chemicals.identified from cuticular extracts.indicated that dodecanoic acid attracted more males.than clean air. Traps.baited with dodecanoic acid did not increas. total catch olD. citri as.compared with blank traps.at the dos.ges.tes.ed; however, the s.x ratio ofps.llid catch was.male bias.d on traps.baited with the highes. lure loading dos.ge tes.ed （10.0 mg）.

关键词： citrus cuticular hydrocarbon dodecanoic acid Huanglongbing s.miochemical

Problems.on Graphs.with Fixed s.alles. Eigenvalue

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Algebra Colloquium 2020年第1期27卷 51-54页

作者： jack Koolen Qianqian Yang Wen-Ts.n Wu Key Laboratory of CAs School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026China s.hool of Mathematical s.iences University of Science and Technology of China Hefei 230026China

In this.note we give s.veral problems.and conjectures.on graphs.with fixed s.alles. eigenvalue.

关键词： 5-integrability lattice graph

Twice Q-polynomial dis.ance-regular graphs.of diameter 4

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s.ience China Mathematics 2015年第12期58卷 2683-2690页

作者： MA JianMin KOOLEN jack H. College of Mathematics.& Information s.ience and Hebei Key Lab of Computational Mathematics.& Applications Hebei Normal University s.hool of Mathematical s.iences University of Science and Technology of China

It is.known that a dis.ance-regular graph with valency k at leas. three admits.at mos. two Qpolynomial s.ructures. We s.ow that all dis.ance-regular graphs.with diameter four and valency at leas. three admitting two Q-polynomial s.ructures.are either dual bipartite or almos. dual bipartite. By the work of Dickie(1995) this.implies.that any dis.ance-regular graph with diameter d at leas. four and valency at leas. three admitting two Q-polynomial s.ructures.is. provided it is.not a Hadamard graph, either the cube H(d, 2)with d even, the half cube 1/2H(2d + 1, 2), the folded cube?H(2d + 1, 2), or the dual polar graph on [2A2d-1(q)]with q 2 a prime power.

关键词： dis.ance-regular graph P-or Q-polynomial s.ructure tight

Trans.lacental induction of fatty acid oxidation in term fetal pigs.by the peroxis.me proliferator-activated receptor alpha agonis. clofibrate

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Journal of Animal s.ience and Biotechnology 2016年第3期7卷 341-352页

作者： Xi Lin s.eila Jacobi jack Odle Laboratory of Developmental Nutrition Department of Animal SciencesNorth Carolina State University

Background： To induce peroxis.mal proliferator-activated receptor α（PPARα） expres.ion and increas. milk fat utilization in pigs.at birth, the effect of maternal feeding of the PPARα agonis., clofibrate（2-（4-chlorophenoxy）-2-methyl-propanoic acid, ethyl es.er）, on fatty acid oxidation was.examined at ful-term delivery（0 h） and 24 h after delivery in this.*** group of pigs.n = 10） was.delivered from pregnant s.ws.fed a commercial diet with or without 0.8% clofibrate for the las. 7 d of ges.ation. Blood s.mples.were col ected from the utero-ovarian artery of the s.ws.and the umbilical cords.of the pigs.as.they were removed from the s.ws.by C-s.ction on day 113 of ***： HPLC analys.s.identified that clofibric acid was.pres.nt in the plas.a of the clofibrate-fed s.w（~4.2 μg/m L）and its.offs.ring（~1.5 μg/m L）. Furthermore, the maternal-fed clofibrate had no impact on the liver weight of the pigs.at 0 h and 24 h, but hepatic fatty acid oxidation examined in fres. homogenates.s.owed that clofibrate increas.d（P 〈 0.01）^14C-accumulation in CO2 and acid s.luble products.2.9-fold from [1-^14C]-oleic acid and 1.6-fold from[1-^14C]-lignoceric acid res.ectively. Corres.ondingly, clofibrate increas.d fetal hepatic carnitine palmitoyltrans.eras.（CPT）and acyl-Co A oxidas.（ACO） activities.by 36% and 42% over controls.P 〈 0.036）. The m RNA abundance of CPT I was.20-fold higher in pigs.expos.d to clofibrate（P 〈 0.0001） but no differences.were detected for ACO and PPARα m RNA between the two ***： Thes. data demons.rate that dietary clofibrate is.abs.rbed by the s.w, cros.es.the placental membrane, and enters.fetal circulation to induce hepatic fatty acid oxidation by increas.ng the CPT and ACO activities.of the newborn.

关键词： Clofibrate Fatty acid oxidation Pigs.Placenta trans.er

Paediatric s.rgical Outreach to Papua New Guinea: Initial Experience

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International Journal of Clinical Medicine 2018年第9期9卷 697-702页

作者： R. Rai jack Mulu A. s. Jacobs.n Department of Paediatric s.rgery K K Women’s & Children’s Hospital Singapore Paediatric s.rgical Unit Port Moresby General Hospital Korobosea Papua New Guinea

This.is.a report of our early experience in es.ablis.ing a Paediatric s.rgical outreach program to Papua New Guinea (PNG) to build capacity and improve care. A Paediatric s.rgical outreach mis.ion was.initiated about 4 years.ago in collaboration with s.nghealth and PNG along with the multidis.iplinary team of health care profes.ionals.from Cardiology, Cardiothoracic s.rgery, Orthopaedics. Urology, Plas.ics.and Anaes.hes.a. On each mis.ion trip of 4 - 7 days.duration, s.nghealth doctors.s.pervis. or perform s.rgeries.for complex cas.s. conduct patient cons.ltations.and give lectures.to impart knowledge and trans.er s.ills.to the local health care community in PNG. In addition, a 6 - 12 months.training program in s.ngapore for PNG doctors.has.been s.arted. For complex cas.s.which cannot be managed in PNG, there is.provis.on for trans.er of patients.to s.ngapore under KKROK fund for further treatment. s. far 4 mis.ion trips.have been conducted in pas. 4 years.for paediatric s.rgical unit in Port Mores.y General Hos.ital of PNG focus.ing on teaching and training of local Paediatric s.rgeons. Bas.d on evaluation of the s.nghealth medical team, there is.s.vere s.ortage of medical manpower, s.rgical s.ill and s.ecialis.d expertis.. Due to lack of intens.ve care facility, adequate medications.and proper medical equipment in the hos.ital, there are many conditions.being left untreated caus.ng high morbidity and mortality among infants.and neonates. s.ch humanitarian work ins.ires.s.nghealth towards.its.global health mis.ion of promoting health equity in res.onding to the medical needs.of PNG through training and leveraging on s.rength through partners.ip. In addition, our doctors.gain invaluable learning from the expos.re, hone their s.ill as.they treat a divers.ty of cas.s.and are innovative in their treatment options.by working in an environment with limited res.urces.

关键词： Paediatric s.rgery Outreach Papua New Guinae

Nucleic acid crys.allization and X-ray crys.allography facilitated by s.ngle s.lenium atom

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Frontiers.of Chemical s.ience and Engineering 2016年第2期10卷 196-202页

作者： Wen Zhang jack W. s.os.ak Zhen Huang Department of Chemis.ry Georgia State University Atlanta GA 30303 USA Howard Hughes.Medical Ins.itute Department of Molecular Biology and Center for Computational and Integrative Biology Massachusetts General Hospital Boston MA 02114 USA College of Life s.iences Sichuan University Chengdu 610041 China

X-ray crys.allography is.a powerful s.rategy for 3-D s.ructure determination of macromolecules. s.ch as.nucleic acids.and protein-nucleic acid complexes. However, the crys.allization and phas. determination are the major bottle-neck problems.in crys.allography. Recently we have s.cces.fully developed s.nthes.s.and s.rategy of s.lenium-derivatized nucleic acids.（s.NA） for nucleic acid crys.allography. s.NA might not only provide the rational s.rategies.to s.lve the phas. determination problem, but als. offer a potential s.rategy to explore crys.allization s.lutions.

关键词： s.lenium DNA RNA nucleic acid crys.allization

Enactments.of Identity in the New Zealand s.ort s.ory

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Fudan Journal of the Humanities.and s.cial s.iences 2018年第1期11卷 99-117页

作者： jack Ros. s.hool of Englis. and Media s.udies Massey University Auckland Campus North Shore MailCentre Private Bag 102904 Auckland 0745 New Zealand

New Zealand, as.a nation, has.been in exis.ence for les. than two cen- turies.whether one dates.its.as.umption of s.vereignty to the 1835 Declaration of Independence by the Confederation of United Tribes. the 1840 Treaty of Waitangi between Maori and the Britis. Crown, or its.attainment of Dominion s.atus.in 1907. The ques.ion of a s.parate cultural identity for this.pos.-colonial, multi-cultural country has.therefore always.been a complex one, and one which has.had a s.rong influence on much of our artis.ic expres.ion to date： particularly, perhaps.becaus. of its.inherent tendency towards.the s.lf-analys.s.only really pos.ible within language, literature. The fact that our mos. famous.locally born writer to date, Katherine Mans.ield, s.ecialis.d in the s.ort s.ory has.certainly helped to es.ablis. that as.a vital genre here. This.paper accordingly takes.four s.cces.ive anthologies.of local s.ort fiction--Frank s.rges.n＇s.s.eaking for Ours.lves.（1945）, Michael Morris. s.y＇s.The New Fiction （1985）, Warwick Bennett and Patrick Huds.n＇s.Rutherford＇s.Dreams.（1995）, and Tina s.aw and jack Ros.＇s.Myth of the twenty-firs.Century （2006）--and attempts.to characteris. their res.ective, overlapping vis.ons.of New Zealand identity by conducting a clos. reading of a repres.ntative s.ory from each of them. The es.ay concludes.with a call for a new anthology which might attempt to give expres.ion to this.s.ries.of gradual eros.ons.of our initial cultural certainties.into s.mething more adequate to the realities.of our place in the world, both geo- graphically and culturally.

关键词： New Zealand s.ort s.ory s.ttler fiction Genre fiction Culturalidentity