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Late.Quate.nary diatom and se. le.e. change. in e.tuarine.plain of the.Jiulong Rive.

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Acta Oce.nologica Sinica 1998年第4期17卷 509-518页

作者： Che. We.rui, (state pilot lab.ratory of coast and isl.nd e.ploitation, Naning Unive.sity, Naning 210093, China)Lan Dongzhao and Che. Che.ghui (Third Institute.of Oce.nography, state Oce.nic Administration, Xiame. 361005, China) state pilot lab. coast isl. e. Nanjing University Nanjing 210093 China Third Institute.of Oce.nography State Oceanic Administration Xiamen 361005 China

Four units and twe.ty-four zone. of diatom have.be.n disce.ne. in the.Bore.ole.ZK5 in the.e.tuarine.plain of the.Jiulong Rive., Fujian Province. Compre.e.sive.analysis of the.e. toge.he. with microbiological asse.blage. and age.de.e.minations in some.othe. bore.ole., shows that during the.Late.Wurm Glacial, se. le.e. of the.study are. rose.and fe.l fre.ue.tly, but had principally be.n in the.e.vironme.ts of e.tuary-bay. This mainly re.ulte. from the.te.tonic subouction. In this pe.iod 3 low se. le.e.s occurre.. at 18, 16 and 12 kaBP re.pe.tive.y. During Holoce.e. se. we.e. intrude. massive.y and the.se. le.e. ove. the.transgnaion maximum had be.n 5-10 m highe. than that of the.pre.e.t.

关键词： Late.Quate.nary diatom se. le.e. change e.tuarine.plain the.Jiulong Rive.

Synthe.is of N-t-Butyl-N'-Aminocarbonyl-N-(Substitute.) Be.zoylhydrazine.Containing α-Aminoalkylphosphonate.Groups

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Chine.e.Che.ical Le.te.s 2000年第5期11卷 401-402页

作者： Qing Min WANG Run Qiu HUANG Zai Guo LI Rut Lian SHAO (Re.e.rch Institute.and state Ke. lab.ratory of e.e.e.to-Organic Che.istry, Nankai Unive.sity, Tianjin 300071) Re.. Inst. state Ke. lab. e. Nankai University Tianjin 300071 China

A varie.y of nove. N-t-butyl-N'-aminocarbonyl-N-(substitute.Be.zoylhydrazine. containing α-aminoalkylphosphonate.groups we.e.synthe.ize. by the.addition of N-t-butyl-N- (substitute.)be.zoylhydrazine. to α-isocyanatoalkylphosphonate.. which we.e.synthe.ize. by the.re.ction of α-aminoalkylphosphonate. with triphosge.e.in good yie.ds. The.structure. of products including by-products we.e.confirme. by 1H NMR, 31P NMR. IR, mass spe.troscopy- and e.e.e.tal analysis.

关键词： Diacylhydrazine.,α-aminoalkylphosphonate. triphosge.e.

e.PRe.ictor: an approach for e.rly pre.iction of pull re.ue.t acce.tance

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Scie.ce.China(Information Scie.ce.) 2025年

作者： Ke.ing CHe. Lingfe.g BAO Xing HU Xin XIA Xiaohu YANG state Ke. lab.ratory of Blockchain and Data Se.urity Zhejiang University Software.e.gine.ring Application Te.hnology lab

A pull re.ue.t (PR) is an e.e.t in Git whe.e.a contributor asks proje.t maintaine.s to re.ie. code.he.she.wants to me.ge.into a proje.t. The.PR me.hanism gre.tly improve. the.e.ficie.cy of distribute. software.de.e.opme.t in the.ope.source.community. Ne.e.the.e.s, the.massive.numbe. of PRs in an ope.-source.software.(OSS) proje.t incre.se. the.workload of de.e.ope.s. To re.uce.the.burde. on de.e.ope.s, many pre.ious studie. have.inve.tigate. factors that affe.t the.chance.of PRs ge.ting acce.te. and built pre.iction mode.s base. on the.e.factors. Howe.e., most pre.iction mode.s are.built on the.data afte. PRs are.submitte. for a while.(e.g., comme.ts on PRs), making the. not use.ul in practice. Be.ause.inte.rators still ne.d to spe.d a large.amount of e.fort on inspe.ting PRs. In this study, we.propose.an approach name. e.PRe.ictor (e.rlie. PR pre.ictor) to pre.ict whe.he. a PR will be.me.ge. whe. it is cre.te.. e.PRe.ictor combine. thre. dime.sions of manual statistic fe.ture. (i.e., contributor profile. spe.ific pull re.ue.t, and proje.t profile. and de.p se.antic fe.ture. ge.e.ate. by Be.T mode.s base. on the.de.cription and code.change. of PRs. To e.aluate.the.pe.formance.of e.PRe.ictor, we.colle.t475192 PRs from 49 popular ope.-source.proje.ts on GitHub. The.e.pe.ime.t re.ults show that our propose. approach can e.fe.tive.y pre.ict whe.he. a PR will be.me.ge. or not. e.PRe.ictor outpe.forms the.base.ine.mode.s (e.g., Random Fore.t and VDCNN) built on manual fe.ture. significantly. In te.ms of F1@Me.ge. F1@Re.e.t, and AUC (are. unde. the.re.e.ve. ope.ating characte.istic curve., the.pe.formance.of e.PRe.ictor is 90.1%, 60.5%, and 85.4%, re.pe.tive.y.

关键词：

An implicit me.hod using contravariant ve.ocity compone.ts and its application to calculations in a harbour-channe. are.

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Acta Oce.nologica Sinica 1998年第4期17卷 423-432页

作者： Shi Fe.gyan, Kong Yazhe. and Ding Pingxing (state Ke. lab.ratory of e.tuarine.and coastal Re.e.rch, e.st China Normal Unive.sity. Shanghai 200062, China) state Ke. lab. e.tuarine.coast. Re.. East China Normal University Shanghai 200062 China

The.ke. proble. in the.computation of fluid dynamics using fine.boundary-fitte. grids is how to improve.the.nume.ical stability and de.re.se.the.calculating quantity. To solve.this proble., implicit sche.e. should be.adopte. since.e.plicit sche.e. may bring about a gre.t incre.se.in computation quantity according to the.Courant-Frle.richsLe.y condition. Whe.e.s the.adoption of implicit sche.e. is difficult to be.re.lize. be.ause.of the.e.iste.ce.of two partial de.ivative. of surface.e.e.ations with re.pe.t to variable. of alte.native.dire.tion coordinate. in e.ch mome.tum e.uation in non-re.tangular coordinate.. With an aim to de.ign an implicit sche.e.in non-re.tangular ccordinate. in the.pre.e.t pape., ne. mome.tum e.uations with the.contravariant compone.ts of ve.ocity ve.tor are.de.ive. base. on the.shallow wate. dynamic e.uations in ge.e.alize. curviline.r coordinate.. In e.ch e.uation, the.coe.ficie.ts be.ore.the.two de.ivative. of surface.e.e.ations have.diffe.e.t orde.s of magnitude. i. e., the.de.ivative.with the.large. ce.fficie.t rnay play a more.important role.than that with the.smalle. one. With this advantage. the.ADI sche.e.can the. be.e.sily e.ploye. to improve.the.nume.ical stability and de.re.se.the.calculating quantity. The.calculation in a harbour and a channe. in Macau ne.rshore.are. shows that the.implicit mode. is e.fe.tive.in calculating curre.t fie.ds in small size.are.s.

关键词： Nume.ical mode. contravariant compone.t of ve.ocity ve.tor implicit sche.e

Gradie.t‑Laye.e. MXe.e.Hollow Lignin Nanosphe.e. Archite.ture.De.ign for Fle.ible.and Stre.chable.Supe.capacitors

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Nano-Micro Le.te.s 2025年第2期17卷 447-462页

作者： Haonan Zhang Che.g Hao Tongtong Fu Dian Yu Jane.Howe.Kaiwe. Che. Ning Yan Hao Re. Huamin Zhai Jiangsu Provincial Ke. lab.of Sustainable.Pulp and Pape. Te.hnology and Biomass Mate.ials NanJing Forestry UniversityNanjing 210037People’s Republic of China De.artme.t of Che.ical e.gine.ring and Applie. Che.istry University of Toronto200 College StreetTorontoON M5S 3E5Canada De.artme.t of Mate.ials Scie.ce.and e.gine.ring University of Toronto184 College StreetTorontoON M5S 3E4Canada Colle.e.of Mate.ials Scie.ce.and e.gine.ring Nanjing Forestry UniversityNanjing 210037People’s Republic of China

With the.rapid de.e.opme.t of fle.ible.we.rable.e.e.tronics,the.de.and for stre.chable.e.e.gy storage.de.ice. has *** this work,a nove. gradie.t-laye.e. archite.ture.was de.ign base. on single.pore.hollow lignin nanosphe.e.(HLNPs)-inte.calate. two-dime.sional transition me.al carbide.Ti_(3)C_(2)T_(x) MXe.e.for fabricating highly stre.chable.and durable.*** de.ositing and inse.ting HLNPs in the.MXe.e.laye.s with a bottom-up de.re.sing gradie.t,a multilaye.e. porous MXe.e.structure.with smooth ion channe.s was constructe. by re.ucing the.ove.stacking of MXe.e.***,the.micro-chambe. archite.ture.of thin-walle. lignin nanosphe.e. e.fe.tive.y e.te.de. the.contact are. be.we.n lignin and MXe.e.to improve.ion and e.e.tron acce.sibility,thus be.te. utilizing the.pse.docapacitive.prope.ty of *** the.e.strate.ie. e.fe.tive.y e.hance. the.capacitive.pe.formance.of the.*** addition,HLNPs,which acte. as a prote.tive.phase.for MXe.e.laye.,e.hance. me.hanical prope.tie. of the.wrinkle. stre.chable.e.e.trode. by re.e.sing stre.s through slip and de.ormation during the.stre.ch-re.e.se.cycling and gre.tly improve. the.structural inte.rity and capacitive.stability of the.*** e.e.trode. and symme.ric fle.ible.all-solid-state supe.capacitors capable.of e.during 600%uniaxial te.sile.strain we.e.de.e.ope. with high spe.ific capacitance. of 1273 mF cm^(−2)(241 F g^(−1))and 514 mF cm^(−2)(95 F g^(−1)),***,the.r capacitance. we.e.we.l pre.e.ve. afte. 1000 time. of 600%stre.ch-re.e.se.*** study showcase. ne. possibilitie. of incorporating biobase. lignin nanosphe.e. in e.e.gy storage.de.ice. to fabricate.stre.chable.de.ice. le.e.aging syne.gie. among various two-dime.sional nanomate.ials.

关键词： Hollow lignin nanosphe.e. MXe.e Gradie.t-laye.e. archite.ture Wrinkle. e.e.trode. Stre.chable.supe.capacitors

De.iphe.ing fungal me.abolon coupling tande. inve.se.e.e.tronde.and Die.s-Alde. re.ction and se.ipinacol re.rrange.e.t for the.biosynthe.is of spiro polycyclic alkaloids

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Scie.ce.China Che.istry 2025年第1期68卷 288-296页

作者： Shuai Liu We.-Qiang Xu Ying-Tong Di Man-Che.g Tang Ding-Kang Che. Ming-Ming Cao Yao-We. Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fe. Xu Ying Ze.g Yun-Dong Wu Xiao-Jiang Hao Ke. lab.ratory of Phytoche.istry and Natural Me.icine. (Chine.e.Acade.y of Scie.ce.) Kunming Institute of Botany Chinese Academy of Sciences Unive.sity of Chine.e.Acade.y of Scie.ce. lab.of Computational Che.istry and Drug De.ign State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School She.zhe. Bay lab.ratory state Ke. lab.ratory of Microbial Me.abolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University state Ke. lab.ratory of Functions and Applications of Me.icinal Plants Guizhou Medical University Mole.ular Biology e.pe.ime.tal Ce.te. Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan Ke. lab.ratory for Wild Plant Re.ource. Kunming Institute of Botany Chinese Academy of Sciences Re.e.rch Unit of Che.ical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the.intricate.proce.s of natural product biosynthe.is, a me.abolon can e.hance.me.abolic flux by associating se.ue.tial e.zyme.. A fungal me.abolon, comprising of flavin-de.e.de.t monooxyge.ase.Spe.F and P450 monooxyge.ase.Spe.G, is ide.tifie. in the.biosynthe.is of spiro polycyclic alkaloids(+)-notoamide.B and its diaste.e.me.(+)-ve.sicolamide.B. Using notoamide.e.as a substance. Spe.F/Spe.G me.abolon can control the.ste.e.se.e.tivity of its 2,3-e.oxidation, followe. by hydroge. atom ion at C-17 to ge.e.ate.re.ctive.e.oxide.tau-m A with die.yl iminium unit. Subse.ue.tly,(+)-notoamide.B and(+)-ve.sicolamide.B are.produce. via tande. none.zymatic inve.se.e.e.tron-de.and Die.s-Alde. re.ction and se.ipinacol re.rrange.e.t. This provide. the.first e.ample.of me.abolon in the.biosynthe.is of spiro-pre.ylate. indole.alkaloids.

关键词： me.abolon Die.s-Alde. re.ction se.ipinacol re.rrange.e.t biosynthe.is notoamide. spiro polycyclic alkaloids

Synthe.is of L-Aspartic Acid and Lactone.Copolyme.s

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Chine.e.Che.ical Le.te.s 1998年第5期9卷 443-445页

作者： Re. Xi ZHUO Jie.CHe.G(De.artme.t of Che.istry, lab.ratory of Biome.ical Polyme. Mate.ials of the.state e.ucationCommission of China, Wuhan Unive.sity, Wuhan 430072) De.artme.t of Che.istry Lab. Biomed. Poly. Mat. State E.C.C. Wuhan University Wuhan 430072 China

Biode.radable.poly(alc-alt-Asp) was synthe.ize. by ring-ope.ing polyme.ization of the.monome. 3-(S)-[(be.zyloxycarbonyl)me.hyl] -morpholine.2, 5-dione.and subse.ue.t catalytic hydroge.ation. Copolyme.s of the.monome. ... 详细信息

关键词： polyde.sipe.tide ring-ope.ing polyme.ization L-aspartic acid glycolide lactide

The.Ge.e.ic Me.hanism of We.chuan e.rthquake

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Journal of Mountain Scie.ce 2011年第2期8卷 336-344页

作者： WANG Yunshe.g HUANG Runqiu LUO Yonghong XU Hongbiao state Ke. lab. of Ge.hazard Pre.e.tion Chengdu University of Technology Chengdu 610059 China

The.ge.e.ic me.hanism of the.5.12 We.chuan e.rthquake.is still be.ng de.ate. and the.e.is still no convincing ge.e.al e.planation for most of the.phe.ome.a. This is be.ause.re.e.rche.s have.ignore. the.important role.of the.Minshan block in the.se.smoge.ic proce.s. The.authors pre.e.t a ne. opinion base. on ge.logical surve. and compre.e.sive.analyse.. The.Minshan block is a ke. te.tonic e.e.e.t of the.e.rthquake.occurre.ce.in the.northwe.t triangle.faulty block of Sichuan Province. The.Minshan block is borde.e. by Longme. Mountain Range.fracture. in the.south, the.Huya fracture.in the.e.st, the.Tazang fracture.in the.north and the.Mounigou Valle. fracture.in the.we.t. The.rigidity of the.block is re.ative.y large. than those.of the.adjace.t re.ions. The.block's e.stward move.e.t pushe. by re.ional maximum main ge.-stre.s is limite. whe. it sudde.ly tape.s off ne.r the.e.st triangle.e.d with a bottle.ne.k e.fe.t, and this cause. ge.-stre.s conce.tration around it. The.shape.of the.block is coffin-like. wide.in the.uppe. part and narrow in the.lowe. part. Whe. a strong e.rthquake.occurs along the.block margins, the.lock-up e.fe.t te.porarily re.e.se., re.ulting in ge.-stre.s transmitte. to the.Pingwu-Qingchuan (Motianling block) re.ion. This transmission cause. the.We.chuan e.rthquake.s afte.shocks to be.conce.trate. in Qingchuan re.ion. As the.block move. e.stward, the.back of the.block, i.e. the.south se.me.t of Mounigou Valle. fracture. be.ame.active.afte. the.We.chuan e.rthquake. The.e.ore.the.afte.shocks we.e.conce.trate. along the.south se.me.t of Mounigou Valle. fracture. Be.ause.the.south margin is compose. of the.front range.fracture. the.ge.-stre.s gradually re.e.se., causing many afte.shocks along the.Guanxian-Anxian fracture. The.ge.logical surve. made.afte. the.We.chuan e.rthquake.re.e.ls that the.surface.rupture. in the.south margin of Minshan block occur not along the.Be.chuan-Yingxiu fracture.(ce.tral fracture. also along the.front range.fracture. The

关键词： 5.12 We.chuan e.rthquake Ge.e.ic me.hanism Minshan block Ge.logical activitie. Longme. Mountain Range

A Ne. Me.hod of Manifold Mosaic for Large.Displace.e.t Image.

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Journal of Compute. Scie.ce.& Te.hnology 2006年第2期21卷 218-223页

作者：方贤勇张明敏潘志庚王鹏 state Ke. lab. of CAD&CG Zhejiang University Hangzhou 310027 P.R. China

In the.traditional manifold mosaic, a single.ce.te. strip is clippe. out from e.ch source.image.to cre.te.a large.image. The.e.ore.the.displace.e.t be.we.n ne.ghboring vie.s should be.ve.y small in orde. to fulfill e.fe.tive.strips cutting. In this pape., a me.hod is propose. to cre.te.a manifold mosaic by image. with re.ative.large.displace.e.t by me.ns of cutting out multiple.strips in the.ove.lap are. according to the.homography be.we.n image.. The.e.strips are.the. warpe. toge.he. to cre.te.a smooth mosaic. An improve. RANSAC algorithm is also pre.e.te. in orde. to improve.the.pre.ision of homography calculation. e.pe.ime.tal re.ults de.onstrate.the.e.ficie.cy of the.me.hod.

关键词： manifold mosaic displace.e.t homography RANSAC