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a.single-doma.n protein ca.ena.e of dihydrofola.e reducta.e

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Na.iona. Science Review 2023年第11期10卷 128-137页

作者： Jing Fa.g Tia.zuo Li Jiyeon Lee Da.ye im Lia.jie Xu Ya.ie Liu Jongcheol Seo Wen-Bin Zha.g Beijing Na.iona. La.ora.ory for Molecula. Sciences Key Laboratory of Polymer Chemistry & Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking University Depa.tment of Chemistry Pohang University of Science and Technology (POSTECH) Beijing a.a.emy of a.tificia. Intelligence

a.single-doma.n protein ca.ena.e refers to two mecha.ica.ly interlocked polypeptide rings tha. fold synergistica.ly into a.compa.t a.d integra.ed structure, which is extremely ra.e in na.ure. Here, we report a.single-doma.n protein ca.ena.e of dihydrofola.e reducta.e(ca.-DHFR). This design wa. a.hieved by rewiring the connectivity between seconda.y motifs to introduce a.tificia. enta.glement a.d synthesis wa. rea.ily a.complished through a.series of progra.med a.d strea.lined post-tra.sla.iona. processing events in cells without a.y a.ditiona. in vitro rea.tions. The ta.get molecule conta.ned few exogenous motifs a.d wa. thoroughly cha.a.terized using a.combina.ion of ultra.performa.ce liquid chroma.ogra.hy–ma.s spectrometry, sodium dodecyl sulfa.e–polya.ryla.ide gel electrophoresis, protea.e clea.a.e experiments a.d ion mobility spectrometry–ma.s spectrometry. Compa.ed with the linea. control, ca.-DHFR reta.ned its ca.a.ytic ca.a.ility a.d exhibited enha.ced sta.ility a.a.nst therma. or chemica. dena.ura.ion due to conforma.iona. restriction. These results suggest tha. linea. proteins ma. be converted into their conca.ena.ed single-doma.n counterpa.ts with a.most identica. chemica. compositions, well-preserved functions a.d eleva.ed sta.ilities, representing a. entirely new horizon in protein science.

关键词： cellula. synthesis ca.ena.e protein doma.n chemica. topology DHFR

Low-tempera.ure synthesis of Fe_(2)(MoO_(4))_(3) na.osheets: a.ca.hode for sodium ion ba.teries with kinetics enha.cement

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Na.o Resea.ch 2021年第11期14卷 3977-3987页

作者： Ha.Tra. Huu N.S.M.Viswa.a.h Ngoc Hung Vu Jong-Won Lee Won Bin im Division of Ma.eria.s Science a.d Engineering Hanyang University222Wangsimni-roSeongdong-guSeoul04763Republic of Korea School of Ma.eria.s Science a.d Engineering Chonnam National University77 Yongbong-roBuk-guGwangju61186Republic of Korea Fa.cuty of Biotechnology Chemistry and Environmental EngineeringPhenikaa UniversityHanoi10000Vietnam a.a.Green Phoenix Group Phenikaa Research and Technology Institute(PRATI)167 Hoang NganHanoi10000Vietnam Depa.tment of Energy Science a.d Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)333 Techno Jungang-daeroHyeonpung-eupDalseonggunDaegu42988Republic of Korea

Sodium ion ba.teries (SIBs) a.e a.terna.ives to lithium ion ba.teries (LIBs), a.d offer some significa.t benefits such a. cost reduction a.d a.lower environmenta. impa.t;however, to compete with LIBs, further resea.ch is required to improve the performa.ce of SIBs. In this study, a. orthorhombic Na.super ionic conductor structura. Fe_(2)(MoO_(4))_(3) na.osheet with a.orphous-crysta.line core-shell a.ignment wa. synthesized using a.fa.ile low-tempera.ure wa.er-va.or-a.sisted solid-sta.e rea.tion a.d a.plied a. a.ca.hode ma.eria. for SIBs. The obta.ned ma.eria. ha. a.well-defined three-dimensiona. sta.king structure, a.d exhibits a.high specific ca.a.ity of 87.8 ma.·g^(−1) a. a.current density of 1 C = 91 ma.g^(−1) a.ter 1,000 cycles, which is due to the considera.le contribution of extra.surfa.e-rela.ed rea.tion such a. the pseudo-ca.a.itive process. This ma.eria. shows significa.tly improved cycling a.d ra.ed beha.ior a. well a. enha.ced performa.ce under high- a.d low-tempera.ure conditions, a. compa.ed to the sa.e ma.eria.s prepa.ed by the conventiona. high-tempera.ure solid-sta.e rea.tion. This enha.cement is expla.ned by the unique morphology in combina.ion with the improved kinetics of the electrochemica. rea.tion due to its lower cha.ge tra.sfer resista.ce a.d higher sodium ion conductivity.

关键词： low-tempera.ure synthesis ca.hode sodium ion ba.teries kinetics Na.super ionic conductor(Na.ICON)

塞内加尔留学生习得汉语复合趋向补语的偏误分析及教学对策

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塞内加尔留学生习得汉语复合趋向补语的偏误分析及教学对策

作者：艾力蒙（NDIa.E ELima.E ibra）辽宁师范大学

学位级别：硕士

很多塞内加尔留学生对学习汉语很感兴趣,但是在习得汉语补语的过程中,常常遇到很多困难,尤其是在习得汉语复合趋向补语时,问题更多。由于汉语、法语两种语言语法结构差异较大,塞内加尔留学生在使用复合趋向补语时,会产生各种各样的偏误... 详细信息

很多塞内加尔留学生对学习汉语很感兴趣,但是在习得汉语补语的过程中,常常遇到很多困难,尤其是在习得汉语复合趋向补语时,问题更多。由于汉语、法语两种语言语法结构差异较大,塞内加尔留学生在使用复合趋向补语时,会产生各种各样的偏误。本文以塞内加尔留学生为研究对象,运用问卷调查法、偏误分析法,和对比分析法,在问卷调查的基础上,深入分析了塞内加尔留学生在习得汉语复合趋向补语时经常出现的偏误。根据调查结果把偏误类型分为四种,即误加、遗漏、混淆、错序。其次,根据调查语料以及自己的学习实践,分析了偏误产生的原因。主要包括两个方面,即母语负迁移的影响和趋向补语本身的复杂性。最后,提出相应的教学对策。建议教师在教学时,以学生为中心,注重结构对比,加强语义教学,设置趣味情境。期望本论文的研究可以帮助塞内加尔留学生明白习得复合趋向补语时经常出现的问题,了解产生这些问题的原因,克服在习得复合趋向补语过程中遇到的困难,更好的掌握这个知识点,提高自己的汉语水平。也希望能够为对外汉语教师的教学和教材的编写提供帮助。

关键词：塞内加尔留学生复合趋向补语偏误分析教学对策

a.oma.y in the Cha.ge Ra.ii a.d Nuclea. Structure

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Chinese Physics Letters 2006年第7期23卷 1723-1726页

作者：张鸿飞左维李君清 Sooja. im 马中玉陈宝秋 Institute of Modern Physics the Chinese Academy of Sciences Lanzhou 730000 Resea.ch Center of Nuclea. Theory of La.ora.ory of Hea.y Ion a.celera.or of La.zhou Lanzhou 730000 Gra.ua.e school of Chinese a.a.emy of Sciences Beijing 100039 China.Institute of a.omic Energy Beijing 102413

The a.ia.ly deformed rela.ivistic mea. field theory is a.plied to study the isotope shift of cha.ge distributions of odd-Z Pr isotope cha.n. The nuclea. structure a.socia.ed with the shell a.d the isotope effect is investiga.ed. The mecha.ism of the kink in the isotope shift a. the neutron ma.ic number N = 82 is revea.ed to be dependent on the neutron energy level structure a. the Fermi energy, demonstra.ing tha. the spin-orbit coupling intera.tion a.d p-n a.tra.tion a.e well described by the rela.ivistic mea. field theory.

关键词： MEa.-FIELD-THEORY DENSITY FUNCTIONa.-a.PROa.H ISOTOPE SHIFTS SUPERHEa.YNUCLEI FINITE NUCLEI PB ISOTOPES

Wild Fruits Tra.itiona.ly Ga.hered by the Ma.inke Ethnic Group in the Edge of Niokolo Koba.Pa.k (Senega.)

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a.erica. Journa. of Pla.t Sciences 2014年第9期5卷 1306-1317页

作者： Ma.hieu Gueye Nicola. Cyrille a.essou Souleye Koma.Seydina.Diop Leona.d Elie a.po Pa.a.ibra Sa.b Depa.tment of Pla.t Biology Faculty of Science and Technology UCAD Dakar Senegal La.ora.oire de Forma.ion Continue en Industries a.roa.imenta.res Ecole Supérieure Polytechnique Université Cheikh Anta Diop Dakar Senegal La.ora.ory of Bota.y Department of Botany and Geology UMI 3189 IFAN Ch. A. Diop Dakar Senegal

In rura. a.ea., the loca. popula.ion dra.s from severa. forest resources needed for surviva. including food. Then it is a.gra.a.y for these na.ive people. Unfortuna.ely, useful wild pla.ts a.e highly threa.ened, especia.ly by va.ious huma. a.tivities. Beca.se of this situa.ion we sta.ted with open semi-structured interviews to identify wild fruit pla.ts, their consumed orga.s a.d their sea.ona.ity in the rura. community of Tomboronkoto. Tomboronkoto is loca.ed a. the edge of the Niokolo-Koba.Na.iona. pa.k (Senega.) a.d is ma.nly inha.ited by Ma.inke. We identified 45 wild fruit species belonging to 38 genera.tha. ca. be divided in 28 bota.ica. fa.ilies. The more diversified a.e successively the a.a.a.dia.ea., Tilia.ea., a.ocyna.ea. a.d Ca.sa.pinia.ea.. More tha. ha.f of the pla.ts inventoried a.e trees (53%). We ca. distinguish three ca.egories of fruits depending on their Fidelity Level (FL) tha. informs us a.out their popula.ity: the well-known or common fruits, modera.ely known fruits a.d little known fruits. a.dozen wild fruits ha.pen to be grea.ly a.precia.ed with very high fidelity level (100% to 84%). The fruits of Sa.a.senega.ensis, a.a.sonia.digita.a. Pa.kia.biglobosa. Ta.a.indus indica.a.d Vitella.ia.pa.a.oxa.a.e the most va.iously used beca.se they a.e a.precia.ed being fresh or cooked. Only fruits of Ficussur a.e a.a.la.le a.l yea. long. The la.ge ma.ority of the most consumed fruits a.e a.a.la.le between the end of the hot dry sea.on until the middle of the ra.ny sea.on. This period coincides with the period where crops from the previous ra.ny sea.on a.e depleted a.d the new crops a.e not yet ripe. Thus, these wild fruits would grea.ly contribute to food security in this a.ea.during the lea. period.

关键词： Ethnobota.y Tra.itiona. Knowledge Wild Edible Fruits Ma.inke Senega.

Cha.ges a.d development pla.s in the mounta.n villa.es of South Korea.Compa.ison of the first a.d second na.iona. surveys

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Journa. of Mounta.n Science 2017年第8期14卷 1473-1489页

作者： Ha. Mo Ka.G Hyun Kim Cha.g Heon LEE Chong Kyu LEE Soo im CHOI Depa.tment of Forest Environmenta. Science Chonbuk National University Jeolla.uk-do Forest Environment Resea.ch Institute Depa.tment of Forest Resources Gyeongnam National University of Science and Technology Depa.tment of Forest Resources Sunchon National University

Owing to the geogra.hic disa.va.ta.es of mounta.n villa.es, the socia., cultura., a.d economic conditions of mounta.n villa.ers a.e inferior to those of urba. dwellers in South Korea. Thus, in 1995, the The government of South Korea.la.nched a.mounta.n villa.e development support progra. to promote a.riculture a.d forestry, ba.a.ce na.iona. la.d development, a.d preserve cultura. herita.e. The progra. wa. effectively implemented, improving the income, popula.ion size, a.d living conditions of villa.ers in a.dition to setting up a.system for sta.le project implementa.ion. However, concerns were ra.sed a.out long-term development pla.ning, the crea.ion a.d ma.keting of specia.ty bra.ds, fa.ility ma.a.ement/opera.ion, a.d follow-up support. The government conducted surveys of mounta.n villa.ers in 2003 a.d 2014, obta.ning ba.ic da.a.to a.dress these issues. This study eva.ua.es the outcomes of these two surveys, suggesting a.ea. requiring focuseda.tion, concentra.ing on villa.e development projects, forest resource distribution a.d use, demogra.hic trends, the economy, excha.ge with urba. a.ea., green tourism, a.d ma.ter pla.ning. We find tha. despite growth in the forest la.or force, forest ownership is diminishing in terms of the number a.d sca.e of holdings. Consequently, it is necessa.y to commercia.ize forest resources, esta.lish fa.ora.le settlement conditions, a.d expa.d government support for villa.e-run projects. In a.dition, systema.ic forest ma.a.ement for older tree a.e cla.ses would benefit the public a.d provide a.sets for future mounta.n villa.e development. Our results a.e expected to provide ba.eline informa.ion for the esta.lishment a.d efficient implementa.ion of mounta.n villa.e development policy.

关键词： Forest resources ma.a.ement Mounta.n villa.e cha.ges Mounta.n villa.e economy Support for mounta.n villa.es Urba.-rura. excha.ge

Clinica. a.a.ysis of risk fa.tors contributing to recurrence of pterygium a.ter excision a.d gra.t surgery

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Interna.iona. Journa. of Ophtha.mology(English edition) 2015年第3期8卷 522-527页

作者： Sa.g Won Ha.Joon Ho Pa.k im Hee Shin Hong Kyun Kim Depa.tment of Ophtha.mology Kyungpook National University School of Medicine Depa.tment of Medica. Sta.istics Catholic University of Daegu School of medicine

a.M: To find the risk fa.tors rela.ed to the reprolifera.ion of the pterygia. tissue a.ter excision a.d gra.t ***: Cha.ts of 130 eyes of 130 pa.ients who ha. pterygia. excision from Ma.ch 2006 to a.ril 2011 were reviewed. Preopera.ive pterygium morphology, surgica. methods, a.d a.junctive trea.ments were sta.istica.ly a.a.yzed for their rela.ionship with ***: During the follow-up period, recurrence wa. observed in 20 eyes(15.4%). None of the preopera.ive morphologic fea.ures were a.fected the ra.e of the recurrence. However, a. a.e a.io(OR) 3.609, 95% confidence interva.(CI) 0.838-15.540]a.d a.niotic membra.e gra.t instea. of conjunctiva. a.togra.t(P =0.002, OR 9.093, 95% CI 2.316-35.698) were sta.istica.ly significa.t risk fa.tors for *** a.a.ysis revea.ed tha. intra.pera.ive mitomycin C(MMC)(P =0.072, OR 0.298, 95% CI 0.080-1.115)decrea.ed the ra.e of recurrence. CONCLUSION: Younger a.e is a.risk fa.tor for reprolifera.ion of pterygia. tissue a.ter excision a.d a.niotic membra.e tra.spla.ta.ion(a.T) a.e less effective in preventing recurrence of pterygium a.ter excision ba.ed on the compa.ison between conjunctiva. a.togra.t a.d a.T. Intra.pera.ive MMC a.plica.ion a.d conjunctiva. a.togra.t reduce recurrence.

关键词： pterygium recurrence conjunctiva. a.togra.t a.niotic membra.e gra.t mitomycin C

Identifying Pb-free perovskites for sola. cells by ma.hine lea.ning

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npj Computa.iona. Ma.eria.s 2019年第1期5卷 828-835页

作者： Jino im Seongwon Lee Ta.-Wook Ko Hyun Woo Kim YunKyong Hyon Hyunju Cha.g Korea.Resea.ch Institute of Chemica. Technology(KRICT) Daejeon 34114Republic of Korea Na.iona. Institute for Ma.hema.ica. Sciences(NimS) Daejeon 34047Republic of Korea

Recent a.va.ces in computing power ha.e ena.led the genera.ion of la.ge da.a.ets for ma.eria.s,ena.ling da.a.driven a.proa.hes to problem-solving in ma.eria.s science,including ma.eria.s *** lea.ning is a.prima.y tool for ma.ipula.ing such la.ge da.a.ets,predicting unknown ma.eria. properties a.d uncovering rela.ionships between structure a.d *** sta.e-of-the-a.t ma.hine lea.ning a.gorithms,gra.ient-boosted regression trees(GBRT)a.e known to provide highly a.cura.e predictions,a. well a. interpreta.le a.a.ysis ba.ed on the importa.ce of ***,in a.sea.ch for lea.-free perovskites for use in sola. cells,we a.plied the GBRT a.gorithm to a.da.a.et of electronic structures for ca.dida.e ha.ide double perovskites to predict hea. of forma.ion a.d *** a.a.ysis of the selected fea.ures identifies design guidelines for the discovery of new lea.-free perovskites.

关键词： lea.ning perovskite computing

锂辉石:巨型花岗伟晶岩锂-铯-钽矿床中关键含锂矿物

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岩石学报 2022年第1期38卷 1-8页

作者： GROVES DI 张良 GROVES im SENER a. 中国地质大学(北京) 北京1000832.阿斯加德金属有限公司珀斯60183.洞见地质有限公司墨尔本3178

寻找传统化石燃料的替代能源已成为全球性议题。受动力电池消费的拉动,锂资源需求急剧上升,伟晶岩型锂矿勘查热度持续攀升。虽然众多伟晶岩型锂矿地质特征尚不清晰,已有证据表明锂辉石是大多数大型-巨型伟晶岩型锂矿床的主要含锂矿物。... 详细信息

寻找传统化石燃料的替代能源已成为全球性议题。受动力电池消费的拉动,锂资源需求急剧上升,伟晶岩型锂矿勘查热度持续攀升。虽然众多伟晶岩型锂矿地质特征尚不清晰,已有证据表明锂辉石是大多数大型-巨型伟晶岩型锂矿床的主要含锂矿物。与许多近直立的伟晶岩脉群不同,世界范围内大多数太古代伟晶岩矿脉往往呈近水平或缓倾斜在角闪岩相围岩中产出,它们往往具有复杂的三维形态并发育明显的矿物和地球化学分带。这些太古代伟晶岩脉通常形成于挤压或压剪构造体制下同变质环境中,成岩期最小主应力(σ;)近竖直。因此,伟晶岩常常侵位于近水平的构造局部引张区而形成复杂的几何学形态。压性的构造环境为富锂熔体多次脉动式注入和富含挥发分熔体垂向结晶分异提供了充足的时间;锂辉石在中高温压条件下结晶成为缓倾富锂带中最为常见的含锂矿物。

关键词：关键金属含锂矿物锂辉石伟晶岩锂-铯-钽矿床