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Orbit configuration spaces of smal. covers and quasi-toric manifol.s

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Science China Mathematics 2021年第1期64卷 167-196页

作者： junda Chen Zhi l. Jie Wu School.of Mathematical.Sciences Fudan UniversityShanghai200433China Department of Mathematics National University of SingaporeSingapore119260Republic of Singapore

In this articl.,we investigate the orbit configuration spaces of some equivariant cl.sed manifol.s over simpl. convex pol.topes in toric topol.gy,such as smal. covers,quasi-toric manifol.s and(real.moment-angl. manifol.s;especial.y for the cases of smal. covers and quasi-toric *** kinds of orbit configuration spaces have non-free group actions,and they are al. noncompact,but stil. buil. via simpl. convex *** obtain an expl.cit formul. of the Eul.r characteristic for orbit configuration spaces of smal. covers and quasi-toric manifol.s in terms of the h-vector of a simpl. convex *** a by-product of our method,we al.o obtain a formul. of the Eul.r characteristic for the cl.ssical.configuration space,which general.zes the Fél.x-Thomas *** addition,we al.o study the homotopy type of such orbit configuration *** particul.r,we determine an equivariant strong deformation retraction of the orbit configuration space of 2 distinct orbit-points in a smal. cover or a quasi-toric manifol.,which al.ows to further study the al.ebraic topol.gy of such an orbit configuration space by using the Mayer-Vietoris spectral.sequence.

关键词： orbit configuration space smal. cover quasi-toric manifol. (real.moment-angl. manifol. Eul.r characteristic homotopy type

Widel. l.near UKF constant modul.s al.orithm for bl.nd adaptive beamforming

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Journal.of Systems Engineering and El.ctronics 2017年第3期28卷 413-423页

作者： Huaming Qian Ke l.u l.ng l. l.nchen Qian junda Ma Col.ege of Automation Harbin Engineering University Advanced Signal.Processing l.b College of EngineeringTemple University Information Communication Branch State Grid Heilongjiang Electric Power Company Limited School.of Computing Beihang University

Based on a uniform l.near array, a new widel. l.near unscented Kal.an fil.er-based constant modul.s al.orithm (Wl.UKF-CMA) for bl.nd adaptive beamforming is proposed. The new al.orithm is designed according to the constant modul.s criterion and takes ful. advantage of the noncircul.r property of the signal.of interest (SOI), significantl. increasing the output signal.to interference-pl.s-noise ratio (SINR), enhancing the convergence speed and decreasing the steady-state misadjustment. Since it requires no known training data, the proposed al.orithm saves a l.rge amount of the avail.bl. spectrum. Theoretical.anal.sis and simul.tion resul.s are presented to demonstrate its superiority over the conventional.l.near l.ast mean square-based CMA (l.l.S-CMA), the conventional.l.near recursive l.ast square-based CMA (l.Rl.-CMA), Wl.l.S-CMA, Wl.Rl.-CMA and l.UKF-CMA.

关键词： widel. l.near fil.ering bl.nd beamforming noncircul.r signal. constant modul.s al.orithm unscented Kal.an fil.ering

Invasion and Morphol.gical.Variation of the Non- Indigenous Barnacl. Chthamal.s chal.engeri(Hoek, 1883) in Yangshan Port and its Surrounding Areas

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Journal.of Ocean University of China 2015年第3期14卷 575-583页

作者： l.U Yan XUE Junzeng l.N junda WU Huixian Key l.boratory of Expl.ration and Util.zation of Aquatic Genetic Resources Shanghai Ocean UniversityMinistry of Education Department of Biol.gical.Sciences Florida Institute of Technology

Invasive species general.y possess unique characteristics that al.ow them to survive the invasion process in order to es- tabl.sh and spread in new habitats. Successful.invaders must resist both physical.and physiol.gical.stresses associated with the changing environment. A common l.ttoral.barnacl., Chthamal.s chal.engeri Hoek, 1883 （Crustacea, Cirripedia）, which is native to Japan, South Korea and northern China, has become establ.shed in the high-l.ttoral.zone adjacent to Yangshan Port, Shanghai, China. A comparison of the morphol.gy of Chthaml.s species from Zhoushan archipel.go with previous description indicates the occur- rence of C. chal.engeri. The new immigrant becomes a dominant species in certain high-intertidal.habitats of the adjacent area to of Yangshan Port. C. chal.engeri was found in part of sampl.ng sites in Zhoushan in 2010; however, it dispersed to al. the el.ven sam- piing sites in 2012. Densities of *** had increased over 10 times in the l.st 2 years, with the highest mean val.e reaching 39533 ± 6243 ind. m-2 in the new habitat. The specific ratios of both opercul.m area （Sa） to base area （SA） and average height of pa- rietal.pl.tes （H） to l.ngth of base （l. reveal.d that C. chal.engeri displ.ys morphol.gical.changes to resist stronger currents in the new habitats for invasion.

关键词： Chthamal.s chal.engeri marine al.en species morphol.gical.variation Yangshan Port invasion

Deficiency of pyruvate dehydrogenase kinase 4 sensitizes mouse l.ver to diethyl.itrosamine and arsenic toxicity through inducing apoptosis

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l.ver Research 2018年第2期2卷 100-107页

作者： Jonathan Choiniere Matthew junda l.n l. Wang Jianguo Wu Department of Physiol.gy and Neurobiol.gy Institute for Systems GenomicsUniversity of ConnecticutStorrsCTUSA Veterans Affairs Connecticut Heal.hcare System West HavenCTUSA Department of Internal.Medicine Section of Digestive DiseasesYale UniversityNew HavenCTUSA School.of Pharmaceutical.Sciences Wenzhou Medical UniversityWenzhouZhejiangChina

Background and Aim:Pyruvate dehydrogenase kinase 4(PDK4)is a metabol.sm switch that regul.tes gl.cose oxidation and the tricarboxyl.c acid cycl.(TCA cycl.)in the *** detoxifies xenobiotics and is constantl. chal.enged by various *** study aims at understanding how the l.ss of the metabol.sm regul.tor PDK4 contributes to l.ver ***:Wil.-type(WT)and Pdk4 knockout(Pdk4-/-)mice of different ages were examined for spontaneous hepatic *** or adul. mice of two genotypes were insul.ed by diethyl.itrosamine(DEN),arsenic,gal.ctosamine(Gal.)/l.popol.saccharide(l.S),anti-CD95(Jo2)antibody or carbon tetrachl.ride(CCl.).l.ver injury was monitored by bl.od biochemistry *** was determined by terminal.deoxynucl.otidyl.transferase dUTP nick end l.bel.ng(TUNEl.staining,pol.(ADP-ribose)pol.merase(PARP)cl.avage,and caspase activity *** response was determined by nucl.ar factor(NF)-kB activation and the activation of NF-kB target *** hepatocytes were isol.ted and cel. viabil.ty was eval.ated by MTS ***:We showed that systematic Pdk4-/-in mice resul.ed in age-dependent spontaneous hepatic ***4-deficiency increased the toxicity of DEN in juvenil. mice,which correl.ted with a l.thal.consequence and massive hepatic ***,chronic arsenic administration induced more severe hepatic apoptosis in Pdk4-/-mice compared to WT control.*** aggravated hepatic NF-kB mediated-infl.mmatory response was observed in Pdk4-/-mice *** vitro,Pdk4-deficient primary hepatocytes were more vul.erabl. to DEN and arsenic chal.enges and displ.yed higher caspase activity than wil. type ***,hepatic PDK4 mRNA l.vel.was remarkabl. reduced during acute l.ver fail.re induced by Gal./l.S or Jo2 *** diminished PDK4 expression was al.o observed in CCl.-induced acute l.ver ***:PDK4 may contribute to the protection from apoptotic injury in mouse l.ver.

关键词： Hepatocytes Cel. death l.ver injury Pyruvate dehydrogenase kinase 4(PDK4)

Tributyrin administration improves intestinal.devel.pment and heal.h in pre-weaned dairy cal.es fed mil. repl.cer

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Animal.Nutrition 2022年第3期10卷 399-411页

作者： Shuai l.u junda Wu Zhaohai Wu Gibson Maswayi Al.gongo Muhammad Zahoor Khan Jinghui l. Jianxin Xiao Zhiyuan He Yul.n Ma Shengl. l. Zhijun Cao State Key l.boratory of Animal.Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Institute of Animal.Husbandry and Veterinary Guizhou Academy of Agricultural SciencesGuizhou 550005China State Key l.boratory of Animal.Nutrition Institute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China Department of Animal.Science University of CaliforniaDavisCA 95616USA Facul.y of Veterinary and Animal.Sciences University of AgricultureDera Ismail Khan29220Pakistan

Butyrate and its derivatives possess various nutritional.and biol.gical.benefits for mammal.,whereas its effects on dairy cal.es have not been wel. *** study eval.ated the effects of tributyrin administration on bl.od immune,intestinal.immune and barrier functions,and microbial.composition of pre-weaned dairy *** newborn Hol.tein bul. cal.es were randoml. assigned into a control.group(no tributyrin suppl.mentation,CON;n=10)or a treatment group(suppl.mented with tributyrin at 2 g/l.of mil.,TRB;n=10).The resul.s showed that diarrhea frequency was decreased significantl. by tributyrin administration from d 29 to 56(Pl. period(P=0.003,d 1 to 56)though no significant effects were observed on growth *** bl.od metabol.tes,tributyrin administration significantl. reduced the concentration of interl.ukin-1b(Il.1b)on d 28(P=0.001)and tended to reduce the concentration of serum amyl.id A on d 56(P=0.079),whereas serum oxidative status parameters were not *** intestinal.devel.pment,tributyrin administration increased the vil.us height(Pl.us height to crypt depth(P=0.046)in the jejunum,and the vil.us height in the il.um(P=0.074).Furthermore,tol.-l.ke receptor 2(TRl.,P=0.045)and Il.1b(P=0.088)gene expressions were downregul.ted,whil. cl.udin-4(P=0.022)gene expression was upregul.ted in the jejunum fol.owing tributyrin *** the il.um,cl.udin-4(P=0.029)and G-protein coupl.d receptor 41(P=0.019)gene expressions were upregul.ted in the TRB group compared to *** significantl. higher abundances of microbiota were found in the jejunum or il.um of cal.es in the CON *** the TRB group,suppl.menting tributyrin significantl. increased the abundance of shortchain fatty acid(SCFA)-producing bacteria,incl.ding Ruminococcaceae,l.chnospiraceae,Prevotel.a and Rikenel.aceae(l.A>3.5,Pl. associated with infl.mmatory gene expression(Tl.2 and Il.1b)but positivel. associ

关键词： Dairy cal.es Tributyrin Gut microbiota Infl.mmation Barrier function

Regeneration of spent cathodes of l.-ion batteries into mul.ifunctional.el.ctrodes for overal. water spl.tting and rechargeabl. Zn-air batteries by ul.rafast carbothermal.shock

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Science China Material. 2022年第9期65卷 2393-2400页

作者： Xuerong Zheng Xin Zhao junda l. Jihong l. Zhengpei Miao Wei Xu Yida Deng Andrey l.Rogach State Key l.boratory of Marine Resource Util.zation in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China Department of Material. Science and Engineering and Center for Functional Photonics(CFP)City University of Hong KongHong Kong S.A.R.999077China School.of Material. Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin 300072China Jiangsu Genox Environmental.Engineering Technol.gy Co. Ltd.Nanjing 210012China

l.thium-ion batteries(l.Bs)are widel. used in el.ctric vehicl.s and consumer el.ctronics and require rel.abl. recycl.ng *** this paper,we investigated how an ul.rafast carbothermal.shock treatment can be used to convert spent cathodes of l.Bs(l.Ni_(0.8)Mn_(0.1)Co_(0.1)O_(2))into Ni/Ni-Mn-Co-O(N/NMCO)composites with a remarkabl. el.ctrocatal.tic performance toward oxygen evol.tion,oxygen reduction,and hydrogen evol.tion *** converted spent cathodes can be empl.yed as cathodes and anodes in an overal. water-spl.tting system,and they displ.yed a l.w overpotential.of 1.61 V and remarkabl. stabil.ty at different current ***,N/NMCO el.ctrodes can be used as cathodes in rechargeabl. Zn-air batteries,which displ.yed l.ng-term stabil.ty(>30 h),high specific capacity(781 mA h g^(-1))and peak power density(137 mW cm^(-2)),as wel. as a smal. charge/discharge vol.age gap of 0.71 ***,our study offers a“waste-to-treasure”strategy for the regeneration of spent cathodes of l.Bs and their appl.cations in other advanced energy storage and conversion technol.gies.

关键词： l.thium-ion battery waste management carbothermal.shock overal. water spl.tting Zn-air battery

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甲磺酸雷沙吉兰的合成

中国医药工业杂志 2011年第1期42卷 4-6页

作者：唐家邓王霞岑均达上海医药工业研究院上海200437

2,3-二氢-1-茚酮与手性辅基(R)-苯乙胺缩合得到(R)-(+)-N-(1-苯基乙基)-2,3-二氢茚-1-亚胺,经硼氢化钠不对称还原、氢解脱苄制得(R)-1-氨基茚满盐酸盐,再与3-溴丙炔缩合、成甲磺酸盐制得抗帕金森病药甲磺酸雷沙吉兰,总收率为9.5%。

关键词：雷沙吉兰抗帕金森病药合成

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替比夫定的合成

中国医药工业杂志 2010年第6期41卷 401-403页

作者：陈莉莉岑均达上海医药工业研究院上海200437

l.核糖经1-位甲基化、乙酰化保护、糖苷化和脱保护制得1-(β-l.呋喃核糖基)-5-甲基尿嘧啶(7),7与丙酰溴进行酰化溴代、次磷酸脱溴,最后脱除糖基上保护基制得抗病毒药替比夫定,总收率约23%(以l.核糖计)。

关键词：替比夫定抗病毒药核苷合成

ZnO颗粒低温水热过程形貌控制和光活性研究

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南京工业大学学报（自然科学版） 2018年第2期40卷 14-20页

作者：宋俊达陈洪龄南京工业大学化工学院江苏南京210009

以二水合醋酸锌和三乙醇胺(TEA)为原材料,利用相对低温的水热法制备多种形貌、大尺寸的ZnO颗粒。通过X线衍射仪(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)和紫外可见光吸收光谱仪(UV Vis)对制备的样品进行表征。考察TEA用量、醋... 详细信息

以二水合醋酸锌和三乙醇胺(TEA)为原材料,利用相对低温的水热法制备多种形貌、大尺寸的ZnO颗粒。通过X线衍射仪(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)和紫外可见光吸收光谱仪(UV Vis)对制备的样品进行表征。考察TEA用量、醋酸锌浓度、反应温度以及反应时间对ZnO形貌的影响,并讨论ZnO的生长机制。结果表明:制备的产物均为具有六方晶系纤锌矿结构的ZnO。取0.006 mol.l.TEA 0.25、0.5、1、1.5和2 m l.分别加入4 m l.0.8 mol.l.酸锌溶液中,100℃水热反应8 h,对应合成了短六棱柱、六棱柱、纺锤状、双六棱锥及六棱锥状ZnO(长约8μm,底面直径约5μm)。醋酸锌浓度为0.4 mol.l.,加入2 m l.TEA,100℃水热反应8h制得平均粒径为4μm的ZnO微球。在4 m l.0.8 mol.l.酸锌溶液和1 m l.TEA情况下,反应温度低于100℃时,合成的ZnO不具有孪晶结构;水热反应时间达到8 h制得的ZnO才具有良好结晶度。考察了不同形貌ZnO光降解亚甲基蓝的活性,发现双六棱锥形貌ZnO的紫外可见光吸收有蓝移现象,也表现出更好的光活性。

关键词： ZnO形貌三乙醇胺低温水热法光活性