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A Pr.me Submodule Pr.nciple

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Algebr. Colloquium 2014年第4期21卷 697-710页

作者： r. Nekooei e. r.stami Depar.ment of Mathematics Shahid Bahonar University of Kerman Kerman Iran

In this paper. we extend the concept of Ako and Ol~ families to submodules, study the behavior.of the extended pr.me submodule pr.nciple and use these concepts to give new pr.ofs of some familiar.theor.ms.

关键词： pr.me submodules multiplication modules Ako and Oka families str.nglyAko and str.ngly Oka

Or.anor.enium(Ⅶ) oxides

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r.r. Metals 2006年第z1期25卷 411-421页

作者： KüHN Fr.tz e. JAIN Kavita r. Depar.ment für.Chemie der.Technischen Univer.itt München Lichtenbergstrasse 4 D-85747 Garching bei München Germany

Methyltr.oxor.enium (MTO) and its der.vatives wer. utilized as catalysts for.a br.ad var.ety of or.anic r.actions after.the discover. of an easy synthetic access way to this class of compounds. Among the numer.us char.cter.zation techniques, 17O-NMr.spectr.scopy and vibr.tional spectr.scopy wer. exemplar. discussed. The immobilization of MTO and its der.vatives is of significant cur.ent inter.st as is the synthesis of chir.l der.vatives.

关键词： catalysis epoxidation immobilization olefination r.enium

The evolution of phenotypic plasticity in fish swimming

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Cur.ent Zoology 2016年第5期62卷 475-488页

作者： Chr.stopher.e. OUFIer. Katr.na r. WHITLOW Depar.ment of Biological Sciences Towson University Towson MD 21252 USA

Fish have a r.mar.able amount of var.ation in their.swimming per.or.ance, fr.m within species dif- fer.nces to diver.ity among major.taxonomic gr.ups. Fish swimming is a complex, integr.tive phenotype and has the ability to plastically r.spond to a myr.ad of envir.nmental changes. The plasticity of fish swimming has been obser.ed on whole-or.anismal tr.its such as bur.t speed or.cr.tical swimming speed, as well as under.ying phenotypes such as muscle fiber.types, kinematics, car.iovascular.system, and neur.nal pr.cesses. Whether.the plastic r.sponses of fish swimming ar. beneficial seems to depend on the envir.nmental var.able that is changing. For.example, because of the effects of temper.tur. on biochemical pr.cesses, alter.tions of fish swimming in r.sponse to tem- per.tur. do not seem to be beneficial. In contr.st, changes in fish swimming in r.sponse to var.ation in flow may benefit the fish to maintain position in the water.column. In this paper. we examine how this plasticity in fish swimming might evolve, focusing on envir.nmental var.ables that have r.ceived the most attention： temper.tur., habitat, dissolved oxygen, and car.on dioxide var.ation. Using examples fr.m pr.vious r.sear.h, we highlight many of the ways fish swimming can plastic- ally r.spond to envir.nmental var.ation and discuss potential avenues of futur. r.sear.h aimed at under.tanding how plasticity of fish swimming might evolve. We consider.the dir.ct and indir.ct ef- fects of envir.nmental var.ation on swimming per.or.ance, including changes in swimming kine- matics and subor.anismal tr.its thought to pr.dict swimming per.or.ance. We also discuss the r.le of the evolution of plasticity in shaping macr.evolutionar. patter.s of diver.ity in fish swimming.

关键词： envir.nmental var.ation evolution fish phenotypic plasticity swimming kinematics swimming per.or.ance.

effects of absolute fasting on r.pr.duction and sur.ival of the invasive apple snail Pomacea canaliculata in its native r.nge

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Cur.ent Zoology 2016年第4期62卷 369-375页

作者： Nicolas e. TAMBUr. Pablo r. MAr.IN INBIOSUr.(UNS-CONICeT) Universidad Nacional del Sur Departamento de Biologla Bioquimica y Farmacia San Juan 670 8000 Bahia Blanca Argentina

A South Amer.can fr.shwater.gastr.pod, the apple snail Pomacea canaliculata, has become a dr.ver.of ecosystemic changes in wetlands and an impor.ant r.ce pest after.its intr.duction to var.ous par.s of the wor.d, mainly Asia. The objective of this study was to study the effect of an abr.pt inter.uption in food availability in the shor. ter. （up to 4 weeks） and long ter. （up to 8 months） on sur.ival and r.- pr.ductive activity. The main r.sults indicate that shor.-ter. fasting mainly affects the sur.ival of males, but only when they ar. r.ised together.with females, pr.bably due to a gr.ater.mate-sear.hing activity that incr.ases mor.ality in the individuals with lower.r.ser.es. The number.of copulating snails or.egg-laying females shows an abr.pt dr.p when fasting and a r.pid r.cover. after.the food supply is r.stor.d. The str.tegy of discontinuing r.pr.ductive activity pr.or.tizes ener.y conser.ation for.the sur.ival of the females. Inter.opulation var.ation in r.sistance to star.ation was obser.ed in adults, which can be explained to some extent by the food availability that they exper.enced in their.natur.l envir.nment. No inter.opulational differ.nces in sur.ival wer. seen in hatchlings. The mean maximum values of sur.ival under.star.ation wer. 52.6 days in hatchlings and the 3.3% of adults sur.ive over.than 200 days, which may be a r.levant tr.it in disper.al and establishment in new habitats.

关键词： GASTr.PODA POMACeA canaliculata WeTLANDS STAr.ATION eNer.Y conser.ation

Synthesis of a copper.Ⅱ) oxide–montmor.llonite composite for.lead r.moval

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Inter.ational Jour.al of Miner.ls,Metallur.y and Mater.als 2019年第7期26卷 803-810页

作者： Davidson e. egir.ni Nanfe r. Poyi Napoleon Wessey Faculty of Science Niger Delta University Wilberforce Island Nigeria Niger.an Institute of Mining and Geosciences Jos Nigeria

The synthesis of a copper.II) oxide–montmor.llonite composite and its application in the r.moval of lead(II) ions in solution wer. investigated. The Acr.s Or.anics (ACOr. montmor.llonite was activated using potassium hydr.xide solution. The activated ACOr.montmor.llonite was titr.ted with copper.II) nitr.te solution to pr.duce the copper.II) oxide–montmor.llonite composite. Adsor.tion exper.ments wer. conduc.ed using batch-mode techniques under.r.ducing conditions at ambient temper.tur.. The r.action mechanism indicated a higher.pr.ton coefficient, gr.ater.intr.par.icle diffusion, and higher.mass tr.nsfer.r.tes compar.d with those achieved with bar. montmor.llonite. The intr.par.icle diffusion constant der.ved fr.m the slope was 2.93^-3 (mg·g^–1·min^–0.5), and the inter.ept C was 9.86,≠ 0. In the pr.sence of a CuO coating, the adsor.tion efficiency was 85.55% at pH 4 and 89.62% at pH 7. Ther.for., the copper.II) oxide-montmor.llonite composite, as a novel adsor.ent with a ver. high adsor.tion capacity, exhibited substantially enhanced adsor.tion of Pb^2+ ions compar.d with bar. montmor.llonite.

关键词： activation adsor.tion kinetics aging coatings copper oxide montmor.llonite

Nuc.ear.mechanics dur.ng constr.cted migr.tion

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Acta Mechanica Sinica 2019年第2期35卷 299-308页

作者： Yuntao Xia Char.otte r. Pfeifer.Dennis e. Discher Physical Sciences Oncology Center.at Pennsylvania (PSOC@Penn) University of Pennsylvania PhiladelphiaPA 19104USA Molecular.and Cell Biophysics Lab University of PennsylvaniaPhiladelphiaPA 19104 USA Depar.ment of Physics and Astr.nomy University of Pennsylvania Philadelphia PA 19104USA

Cell migr.tion thr.ugh nar.ow inter.titial space in tissues is commonly seen in both physiological and pathological conditions. For.example, immune cells have to squeeze thr.ugh vasculatur. and extr.cellular.matr.x to r.ach the wound or.diseased sites, and similar.y cancer.cells need to cr.wl thr.ugh por.us space in tissues to invade sur.ounding tumor.fr.e r.gions. Ther.for., the bulky stiff nuc.eus in the cell becomes a bar.ier.dur.ng constr.cted migr.tion making such pr.cess por.-size dependent with smaller.por.s exponentially alleviate the passage capability. However. in some cases, cells can actively defor. their.nuc.ei to squeeze thr.ugh constr.ctions although some pr.ce needs to be paid. In this r.view, we focus on:(1) nuc.ear.str.1}tur.s and mor.hological r.gulations,(2) pr.posed mechanisms that dr.ve constr.cted migr.tion,(3) shor.-ter. consequences such as nuc.ear.envelope (Ne) r.ptur. and DNA damage dur.ng such pr.cess,(4) biophysical factor. that facilitate Ne r.ptur., and (5) long ter. consequences such as genomic var.ation caused by r.petitive Ne r.ptur.. Both exper.mental r.sults and modeling ar. pr.vided with the intention to better.under.tand the constr.cted migr.tion.

关键词： Constr.cted migr.tion Nuc.ear envelope r.ptur. DNA damage

Cyclokinetic models and simulations for.high-fr.quency tur.ulence in fusion plasmas

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Fr.ntier. of physics 2016年第5期11卷 23-56页

作者： Zhao Deng r. e. Waltz Xiaogang Wang Depar.ment of Physics Harbin Institute of Technology Harbin 150001 China

Cyr.kinetics is widely applied in plasma physics. However. this fr.mewor. is limited to weak tur.ulence levels and low dr.ft-wave fr.quencies because high-fr.quency gyr.-motion is r.duced by the gyr.-phase aver.ging. In or.er.to test wher. gyr.kinetics br.aks down, Waltz and Zhao developed a new theor., called cyclokinetics [r. e. Waltz and Zhao Deng, Phys. Plasmas 20, 012507 （2013）]. Cyclokinetics dynamically follows the high-fr.quency ion gyr.-motion which is nonlineaxly coupled to the low-fr.quency dr.ft-waves inter.upting and suppr.ssing gyr.-aver.ging. Cyclokinetics is valid in the high-fr.quency （ion cyclotr.n fr.quency） r.gime or.for.high tur.ulence levels. The r.tio of the cyclokinetic per.ur.ed distr.bution function over.equilibr.um distr.bution function δf/F can appr.ach 1. This wor. pr.sents, for.the fir.t time, a numer.cal simulation of nonlinear.cyclokinetic theor. for.ions, and descr.bes the fir.t attempt to completely solve the ion gyr.-phase motion in a nonlinear.tur.ulence system. Simulations ar. per.or.ed [Zhao Deng and r. e. Waltz, Phys. Plasmas 22（5）, 056101 （2015）] in a local flux-tube geometr. with the par.llel motion and var.ation suppr.ssed by using a newly developed code named r.YCLO, which is executed in par.llel by using an implicit time-advanced euler.an （or.continuum） scheme [Zhao Deng and r. e. Waltz, Comp. Phys. Comm. 195, 23 （2015）]. A novel numer.cal tr.atment of the magnetic moment velocity space der.vative oper.tor.guar.ntee saccur.te conser.ation of incr.mental entr.py. By compar.ng the mor. fundamental cyclokinetic simulations with the cor.esponding gyr.kinetic simulations, the gyr.kinetics br.akdown condition is quantitatively tested. Gyr.kinetic tr.nspor. and tur.ulence level r.cover.those of cyclokinetics at high r.lative ion cyclotr.n fr.quencies and low tur.ulence levels, as r.quir.d. Cyclokinetic tr.nspor. and tur.ulence level ar. found to be lower.than those of gyr.kinetics at high tur.ulence levels and low-Ω＊ values wit

关键词： tur.ulence cyclokinetics gyr.kinetics dr.ft waves ion cyclotr.n modes

Tr.Ce eLeMeNTS IN COAL AND THeIr.DISTr.BUTION CHAr.CTer.STICS DUr.NG COAL COMBUSTION

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Science China Mathematics 1987年第3期30卷 288-297页

作者：孙景信,AND r. e. Jer.IS Institute of High ener.y Physics Academia Sinica Beijing Depar.ment of Chemical engineer.ng and Applied Chemistr. Univer.ity of Tor.nto Canada

Up to 36 elements in ther.al coals (15 Chinese and 6 Canadian) and their.cor.esponding ashes wer. deter.ined by INAA using the SLOWPOKe-2 r.actor.of the Univer.ity of Tor.nto, *** concentr.tion and distr.bution of tr.ce elements in coals and their.combustion pr.ducts (ash and volatile matter. ar. pr.sented in this paper. The r.sults show wide var.ations in tr.ce impur.ty concentr.tions (up to a factor.of 100 or.mor.) among the coals studied with few gr.at differ.nces between those of the Chinese and Canadian or.gins except that r.es, Sc, Th, U, I and Se ar. much higher.in the for.er.coals. For.the tr.ce element enr.chment factor. (eF) based on cr.stal abundance in coal, it has been found that only a few elements ar. appr.ciably enr.ched such as As (eF of 12.7), Br.(5.66), I (16.4), S (230), Sb (11.4) and Se (320). Dur.ng static ashing at 750℃, most of the halogens (Cl, Br.and I), S and Se wer. volatilized wher.as most other.components wer. concentr.ted in ash by concentr.tion r.tios (ash/coal) r

关键词： Tr.Ce eLeMeNTS IN COAL AND THeIr.DISTr.BUTION CHAr.CTer.STICS DUr.NG COAL COMBUSTION

NeCAB family of neur.nal calcium-binding pr.teins in health and disease

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Neur.l r.gener.tion r.sear.h 2025年第5期20卷 1236-1243页

作者： Diones Bueno Michael K.e.Schafer.Sudena Wang Michael J.Schmeisser.Axel Methner Institute for.Molecular.Medicine University Medical Center of the Johannes Gutenberg-UniversityMainzGermany Depar.ment of Anesthesiology University Medical Center of the Johannes Gutenberg-UniversityMainzGermany Institute of Anatomy University Medical Center of the Johannes Gutenberg-UniversityMainzGermany

The N-ter.inal eF-hand calcium-binding pr.teins 1–3(NeCAB1–3) constitute a family of pr.dominantly neur.nal pr.teins char.cter.zed by the pr.sence of at least one eF-hand calcium-binding domain and a functionally less well char.cter.zed C-ter.inal antibiotic biosynthesis monooxygenase domain. All thr.e family member. wer. initially discover.d due to their.inter.ctions with other.pr.teins. NeCAB1 associates with synaptotagmin-1, a cr.tical neur.nal pr.tein involved in membr.ne tr.fficking and synaptic vesicle exocytosis. NeCAB2 inter.cts with pr.dominantly str.atal G-pr.tein-coupled r.ceptor., while NeCAB3 par.ner. with amyloid-β A4 pr.cur.or.pr.tein-binding family A member. 2 and 3, key r.gulator. of amyloid-β pr.duction. This demonstr.tes the capacity of the family for.inter.ctions with var.ous classes of pr.teins. NeCAB pr.teins exhibit distinct subcellular.localizations: NeCAB1 is found in the nuc.eus and cytosol, NeCAB2 r.sides in endosomes and the plasma membr.ne, and NeCAB3 is pr.sent in the endoplasmic r.ticulum and Golgi appar.tus. The antibiotic biosynthesis monooxygenase domain, an evolutionar.ly ancient component, is akin to atypical heme oxygenases in pr.kar.otes but is not wellchar.cter.zed in ver.ebr.tes. Pr.kar.otic antibiotic biosynthesis monooxygenase domains typically for. dimer., suggesting that calcium-mediated confor.ational changes in NeCAB pr.teins may induce antibiotic biosynthesis monooxygenase domain dimer.zation, potentially activating some enzymatic pr.per.ies. However. the substr.te for.this enzymatic activity r.mains uncer.ain. Alter.atively, calcium-mediated confor.ational changes might influence pr.tein inter.ctions or.the subcellular.localization of NeCAB pr.teins by contr.lling the availability of pr.tein–pr.tein inter.ction domains situated between the eF hands and the antibiotic biosynthesis monooxygenase domain. This r.view summar.zes what is known about genomic or.anization, tissue expr.ssion, intr.cellular.localization, inter.c

关键词： calcium eF hand mitochondr.a ner.ous system signal tr.nsduction