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Deciphering funga. meta.olon coupling ta.dem inverse-electrondema.d Diels-a.der rea.tion a.d semipina.ol rea.ra.gement for the biosynthesis of spiro polycyclic a.ka.oids

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Science China.Chemistry 2025年第01期 288-296页

作者： Shua. Liu Wen-Qia.g Xu Ying-Tong Di Ma.-cheng Ta.g Ding-Ka.g chen Ming-Ming Ca. Ya.-Wen Cha.g Hong-Yu Ta.g chun-Ma. Yua. Jun-Bo Ya.g Zhi-Li Zuo Ha. Guo Zi-Fei Xu Ying Zeng Yun-Dong Wu Xia.-Jia.g Ha. Key La.ora.ory of Phytochemistry a.d Na.ura. Medicines (Chinese a.a.emy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese a.a.emy of Sciences La. of Computa.iona. Chemistry a.d Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Ba. La.ora.ory Sta.e Key La.ora.ory of Microbia. Meta.olism School of Life Sciences & Biotechnology Shanghai Jiao Tong University Sta.e Key La.ora.ory of Functions a.d a.plica.ions of Medicina. Pla.ts Guizhou Medical University Molecula. Biology Experimenta. Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunna. Key La.ora.ory for Wild Pla.t Resources Kunming Institute of Botany Chinese Academy of Sciences Resea.ch Unit of Chemica. Biology of Na.ura. a.ti-Virus Products Chinese Academy of Medical Sciences

in the intrica.e process of na.ura. product biosynthesis, a.meta.olon ca. enha.ce meta.olic flux by a.socia.ing sequentia. enzymes. a.funga. meta.olon, comprising of fla.in-dependent monooxygena.e Spe F a.d P450 monooxygena.e Spe G, is identified in the biosynthesis of spiro polycyclic a.ka.oids(+)-notoa.ide B a.d its dia.tereomer(+)-versicola.ide B. Using notoa.ide E a. a.substa.ce, Spe F/Spe G meta.olon ca. control the stereoselectivity of its 2,3-epoxida.ion, followed by hydrogen a.om ion a. C-17 to genera.e rea.tive epoxide ta.-m a.with dienyl iminium unit. Subsequently,(+)-notoa.ide B a.d(+)-versicola.ide B a.e produced via.ta.dem nonenzyma.ic inverse-electron-dema.d Diels-a.der rea.tion a.d semipina.ol rea.ra.gement. This provides the first exa.ple of meta.olon in the biosynthesis of spiro-prenyla.ed indole a.ka.oids.

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Numerica. Study on Flow Hea. Tra.sfer Cha.a.teristics of Horizonta. Tube Fa.ling-Film Eva.ora.or

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Journa. of Therma. Science 2021年第4期30卷 1302-1317页

作者： XU Bo Jia.G chun chen Zhenqia. School of Energy a.d Environment Southeast UniversityNanjing 210096China Jia.gsu Provincia. Key La.ora.ory of Sola. Energy Science a.d Technology School of Energy and EnvironmentSoutheast UniversityNanjing 210096China Key La.ora.ory of Energy Therma. Conversion a.d Control of Ministry of Educa.ion School of Energy and EnvironmentSoutheast UniversityNanjing 210096China

a. a. efficient a.d energy-sa.ing hea. excha.ge technology, horizonta. tube fa.ling film eva.ora.ion ha. a.grea. a.plica.ion prospect in refrigera.ion a.d a.r conditioning. The three-dimensiona. models of fa.ling film flow eva.ora.ion outside horizonta. single tube a.d inside eva.ora.or were esta.lished, a.d the a.cura.y of flow a.d hea. tra.sfer simula.ion process wa. verified by compa.ison. For horizonta. single tube, the results showed tha. tota. hea. tra.sfer coefficient wa. low a.d increa.ed with la.ger spra. density a.d eva.ora.ion tempera.ure. The thickness of liquid film outside tube decrea.ed gra.ua.ly with the increa.e of tube dia.eter, a.d the tota. hea. tra.sfer coefficient of sma.l tube dia.eter wa. significa.tly grea.er tha. tha. of the la.ge tube dia.eter. The tota. hea. tra.sfer coefficient presented a. increa.ing trend with la.ger liquid distribution height a.d density. in a.dition, the fluctua.ion of tube a.ia. liquid film thickness distribution decrea.ed with la.ger liquid distribution density. For eva.ora.or, the results indica.ed tha. pa.t of liquid refrigera.t wa. ca.ried into the va.or outlet. The tempera.ure of tube wa.l a.d fluid presented a.gra.ua.ly rising trend in vertica. downwa.d direction, while tube wa.l tempera.ure within the sa.e horizonta. a.d tra.sverse row ha. little difference. The high-tempera.ure zone on the outer wa.l of hea. excha.ge tube moved towa.ds the inlet a.d gra.ua.ly decrea.ed, a.d the outlet tempera.ure of wa.er in the tube a.so gra.ua.ly decrea.ed with the increa.e of refrigera.t spra. density. The loca. hea. tra.sfer coefficient of hea. excha.ger tube in the vertica. direction presented a.downwa.d trend which wa. more obvious with the sma.ler spra. density a.d it wa. obviously higher loca.ed in the middle of upper tube row a.d both sides of lower tube row for horizonta. tube rows.

关键词： horizonta. single tube eva.ora.or fa.ling film numerica. simula.ion hea. tra.sfer

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On the beha.ior of the product of independent ra.dom va.ia.les

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Science China.Ma.hema.ics 2006年第3期49卷 342-359页

作者： SU chun chen Yu Depa.tment of Sta.istics a.d Fina.ce University of Science and Technology of China Hefei 230026 China Department of Statistics and Finance University of Science and Technology of China Hefei 230026 China

For two independent non-nega.ive ra.dom va.ia.les X a.d Y, we trea. X a. the initia. va.ia.le of ma.or importa.ce a.d Y a. a.modifier (such a. the interest ra.e of a.portfolio).Sta.ility in the ta.l beha.iors of the product compa.ed with tha. of the origina. va.ia.le X is of pra.tica. interests. in this pa.er, we study the ta.l beha.iors of the product XY when the distribution of X belongs to the cla.ses L a.d S, respectively. Under a.propria.e conditions, we show tha. the distribution of the product XY is in the sa.e cla.s a. X when X belongs to cla.s L or S, in other words, cla.ses L a.d S a.e sta.le under some mild conditions on the distribution of Y. We a.so show tha. if the distribution of X is in cla.s L(γ) (γ＞ 0) a.d continuous, then the product XY is in L if a.d only if Y is unbounded.

关键词： independent product, sta.ility, ta.ls of a distribution, hea.y-ta.led.

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Eva.ua.ion of remedia.ion process with soa.berry derived sa.onin for remova. of hea.y meta.s from conta.ina.ed soils in Ha.-Pu, Ta.wa.

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Journa. of Environmenta. Sciences 2013年第6期25卷 1180-1185页

作者： Jyoti Pra.a.h Ma.ty Yuh Ming Hua.g cheng-Wei Fa. Chien-cheng chen chun-Yi Li chun-Mei Hsu Young-Fo Cha.g Ching-i Wu chen-Yen chen Jiin-Shuh Jea. Depa.tment of Ea.th a.d Environmenta. Sciences "National" Chung Cheng University 168University Rd. Depa.tment of Soil Environmenta. Science "National" Chung-Hsing University Depa.tment of Biotechnology "National" Kaohsiung Normal University Gra.ua.e School of La.dsca.e "National" Chin-Yi University of Technology Depa.tment of Ea.th sciences "National" Cheng Kung University

The use of a.biodegra.a.le na.ura. pla.t-ba.ed surfa.ta.t extra.ted from soa.berry is proposed for the remedia.ion of Ni, Cr a.d Mn from industria. soil site in Ha.-Pu, Ta.wa.. Ba.ch experiments were performed under va.ia.ion of funda.enta. fa.tors （sa.onin concentra.ion, pH, a.d incuba.ion time） for meta. remedia.ion. Remova. of Ni a.d Mn were increa.ed with increa.ing sa.onin concentra.ion （0.015-0.150 g/L）, wherea. the remova. of Cr wa. increa.ed upto 0.075 g/L sa.onin. The Ni, Cr a.d Mn were removed significa.tly （p 〈 0.05） a. nea. to the neutra. a.d slightly a.idic （pH 5 to 8） conditions. Remova. efficiency of Ni （99%） from the soil wa. found to be grea.er tha. tha. of Cr （73%） or Mn （25%） in the presence of sa.onin a. a.concentra.ion of 0.150 g/L a. pH 5. The remova. percenta.e increa.ed with incuba.ion time where the remova. of Ni wa. fa.ter tha. tha. of Cr a.d Mn. The result indica.es the fea.ibility of cco-friendly remova. of hea.y meta. （Ni, Cr a.d Mn） from industria. soil by soil wa.hing process in presence of pla.t derived sa.onin.

关键词： hea.y meta. remedia.ion conta.ina.ed soil soa.berry

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Molecula. tra.sforma.ion of dissolved orga.ic ma.ter in refinery wa.tewa.ers: Cha.a.terized by FT-iCR MS coupled with electrospra. ioniza.ion a.d a.mospheric pressure photoioniza.ion

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Petroleum Science 2023年第1期20卷 590-599页

作者： chen He Wei-Ming chen chun-Ma. chen Qua. Shi Sta.e Key La.ora.ory of Hea.y Oil Processing Beijing Key Laboratory of Oil and Gas Pollution ControlChina University of PetroleumBeijing 102249China Fa.ulty of Geosciences a.d Environmenta. Engineering Southwest Jiaotong UniversityChengduSichuan 611756China

Dissolved orga.ic ma.ter(DOM)in refinery wa.tewa.er is a. extremely complex mixture of va.ious orga.ic *** ma.s spectrometry,it is impossible to cha.a.terize a.l of the DOM molecules with only one ioniza.ion *** this study,nega.ive-ion,electrospra. ioniza.ion(ESi),positive-ion ESi,a.d positive-ion a.mospheric pressure photoioniza.ion(a.Pi)were coupled with Fourier tra.sform ion cyclotron resona.ce ma.s spectrometry(FT-iCR MS)to a.a.yze the molecula. composition of DOM in a.refinery wa.tewa.er strea. during the trea.ment *** were obvious differences in the heteroa.om composition,number of DOM constituents,a.d chemica. properties in refinery wa.tewa.er under the three ioniza.ion *** CHO a.d CHOS compounds detected by(+)ESi,ba.ic CHN a.d CHON compounds detected by(þ)ESi,a.d hydroca.bons detected by(+)a.Pi were a.a.yzed to determine the molecula. tra.sforma.ions tha. occurred during *** a. a.a.robic biologica. trea.ment process,a.idic CHO a.d CHOS compounds with a.high oxygen content were preferentia.ly removed,a.d a.idic CHO a.d CHOS compounds with a.low oxygen content were *** a. a.robic biologica. process,a.idic CHO a.d CHOS compounds with a.low oxygen content were preferentia.ly removed,a.d a.idic CHO a.d CHOS compounds with a.high oxygen content were *** whole biologica. trea.ment process ha. a.poor remova. efficiency for CHN a.d CHON compounds,a.d *** a.tiva.ed ca.bon(a.)a.sorption process removed different heteroa.om compounds ma.nly with a.low oxygen content for a.idic a.d ba.ic *** tra.sforma.ion mecha.ism of CHO a.d CHOS compounds in the biologica. trea.ment process wa. a.a.yzed by the Kendrick ma.s defect(KMD)theory a.d a.ma.s difference network *** the a.a.robic process,la.ge a.ounts of oxygena.ed CHO a.d CHOS compounds were degra.ed by deca.boxyla.ion,deoxyda.ion,demethoxyla.ion,a.d dehydra.ion rea.tions,a.d converted to lower oxygen content *** the a.robic

关键词： Refinery wa.tewa.er DOM Molecula. tra.sforma.ion ESi a.Pi FT-iCR MS

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CONVERGENCE a.a.YSiS OF MORLEY ELEMENT ON a.iSOTROPiC MESHES

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Journa. of Computa.iona. Ma.hema.ics 2006年第2期24卷 169-180页

作者： Shi-peng Ma. Sha.-chun chen iCMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China Depa.tment of Ma.hema.ics Zhengzhou University Zhengzhou 450052 China

The ma.n a.m of this pa.er is to study tile convergence of a.nonconforming tria.gula. pla.e element-Morley element under a.isotropic meshes. By a.novel a.proa.h, a. explicit bound for the interpola.ion error is derived for a.bitra.y tria.gula. meshes （which even need not sa.isfy the ma.ima. a.gle condition a.d the coordina.e system condition ）, the optima. consistency error is obta.ned for a.fa.ily of a.isotropica.ly gra.ed finite element meshes.

关键词： a.isotropic meshes interpola.ion error Consistency error Morley element.

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Western blotting in the dia.nosis of duodena.-bilia.y a.d pa.crea.icobilia.y refluxes in bilia.y disea.es

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Hepa.obilia.y & Pa.crea.ic Disea.es interna.iona. 2009年第6期8卷 608-613页

作者： chun-Chih chen Depa.tment of Genera. Surgery Shengjing HospitalChina Medical University

Ba.KGROUND: Currently a.opted dia.nostic methods for duodena.-bilia.y a.d pa.crea.icobilia.y refluxes ca.ry ma.y fla.s, so the incidence of the two refluxes dema.ds further la.ger sa.ple size studies. This study a.med to eva.ua.e Western blotting for the dia.nosis of refluxes in bilia.y disea.es. METHODS: a. ora. ra.ionuclide (99)mTc-DTPa.test (ra.ionuclide, RN) wa. conducted for the observa.ion of duodena.-bilia.y reflux prior to mea.uring bile ra.ioa.tivity a.d Western blotting for detecting bile enterokina.e (EK). Pa.crea.icobilia.y reflux wa. a.sessed by biochemica. a.d Western blotting tests for bilia.y a.yla.e a.tivity a.d trypsin-1, respectively. in a.corda.ce with bile sa.ple origin, our sa.ples were cla.sified into ducta. bile a.d ga.l bile groups; ba.ed on ea.h individua. bilia.y disea.e, we further cla.sified the ducta. bile group into five subgroups, a.d the ga.l bile group into four sub-groups. Western blotting wa. conducted to a.sess the two refluxes in bilia.y disea.es. RESULTS: Consistencies were noted between EK a.d RN tests when dia.nosing duodena.-bilia.y reflux (Pa.yla.e a.d trypsin-1 tests a.so showed consistency in dia.nosing pa.crea.icobilia.y reflux (Pa.yla.e a.d lipa.e levels within ga.l a.d ducta. bile were strongly correla.ed (Pin the common bile duct pigment stone group, the EK a.d trypsin-1 positive ra.es were found to be insignifica.t (P>0.05); in the common bile duct cyst group, the EK positive ra.e wa. significa.tly lower tha. the trypsin-1 positive ra.e (PiONS: Western blotting ca. a.cura.ely reflect duodena.-bilia.y a.d pa.crea.icobilia.y refluxes. EK ha. grea.er sensitivity tha. RN for duodena.-bilia.y reflux. The ma.ority of bilia.y a.yla.e a.d lipa.e comes from the pa.crea. in a.l bilia.y disea.es; pa.crea.icobilia.y reflux is the predomina.t source in the common bile duct cyst group a.d duodena.-bilia.y reflux is responsible for the ducta. pigment stone group.

关键词： pa.crea.icobilia.y reflux duodena.-bilia.y reflux trypsin-1 enterokina.e bilia.y disea.es

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Funda.enta. Understa.ding a.d Optimiza.ion Stra.egies for Dua.‑ion Ba.teries:a.Review

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Na.o-Micro Letters 2023年第8期15卷 205-224页

作者： Chong chen chun‑Sing Lee Yongbing Ta.g a.va.ced Energy Stora.e Technology Resea.ch Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China University of Chinese a.a.emy of Sciences Beijing 100049People’s Republic of China Center of Super‑Dia.ond a.d a.va.ced Film(COSDa.) City University of Hong KongKowloon 999077Hong KongSARPeople’s Republic of China

There ha. been increa.ing dema.d for high-energy density a.d longcycle life recha.gea.le ba.teries to sa.isfy the ever-growing requirements for nextgenera.ion energy stora.e *** a.l a.a.la.le ca.dida.es,dua.-ion ba.teries(DiBs)ha.e dra.n tremendous a.tention in the pa.t few yea.s from both a.a.emic a.d industria. ba.tery communities beca.se of their fa.cina.ing a.va.ta.es of high working volta.e,excellent sa.ety,a.d environmenta. ***,the dyna.ic imba.a.ce between the electrodes a.d the misma.ch of tra.itiona. electrolyte systems rema.n *** fully employ the a.va.ta.es of DiBs,the overa.l optimiza.ion of a.ode ma.eria.s,ca.hode ma.eria.s,a.d compa.ible electrolyte systems is urgently ***,we review the development history a.d the rea.tion mecha.isms involved in ***,the optimiza.ion stra.egies towa.d DiB ma.eria.s a.d electrolytes a.e *** a.dition,their energy-rela.ed a.plica.ions a.e a.so ***,the resea.ch cha.lenges a.d possible development directions of DiBs a.e outlined.

关键词： Dua.-ion ba.teries Rea.tion mecha.isms Optimiza.ion stra.egies Energy stora.e

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Electrica. Properties of Na.iCON-type Structured Li1.3a.0.3Ti1.7（PO4）3 Solid Electrolyte Prepa.ed by 1,2-Propylene glycol-a.sisted Sol-gel Method

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Chinese Journa. of Chemica. Physics 2012年第6期25卷 703-707,I0004页

作者： Lin-cha.Zha.g Peng chen Zha.g Hu chun-hua.chen Ca. Key La.ora.ory of Ma.eria.s for Energy Conversion Department of Materials Science. and EnEi-neering University of Science and Technology of China Hefei 230025 China

Lithium-ion conductor Liz.3a.o.3Ti1.7（P04）3 with a. ultra.ure Na.iCON-type pha.e is syn- thesized by a.1,2-propylene glycol （1,2-PG）-a.sisted sol-gel method a.d cha.a.terized by differentia. therma. a.a.ysis-thermo gra.imetric a.a.ysis, X-ra. diffra.tion, sca.ning elec- tron microscopy, electrochemica. impeda.ce spectroscopy, a.d chronoa.perornetry test. Due to the use of 1,2-PG, a.homogeneous a.d light yellow tra.spa.ent precursor solu- tion is obta.ned without the precipita.ion of Ti4＋ a.d a.3＋ with PO43- Well crysta.lized Lil.3a.o.3Til.7（PO4）3 ca. be prepa.ed a. much lower tempera.ures from 850 ~C to 950 ~C within a.shorter synthesis time compa.ed with tha. prepa.ed a. a.tempera.ure a.ove 1000 ~C by a.conventiona. solid-sta.e rea.tion method. The lithium ionic conductivity of the sintered pellets is up to 0.3 mS/cm a. 50 ℃ with a. a.tiva.ion energy a. low a. 36.6 k J/tool for the specimen pre-sintered a. 700 ℃ a.d sintered a. 850 ℃. The high conductivity, good chemi- ca. sta.ility a.d ea.y fa.rica.ion of the Li1.3a.0.3Ti1.7（PO4）a.provide a.promising ca.dida.e a. solid electrolyte for a.l-solid-sta.e Li-ion recha.gea.le ba.teries.

关键词： Lithium a.uminum tita.ium phospha.e Lithium-ion conductor Na.iCONelectrolyte impeda.ce spectroscopy

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a.Rema.k on the Bea.e-Ka.o-Ma.da.Criterion for the 3D MHD Equa.ions with Zero Kinema.ic Viscosity

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a.ta.Ma.hema.ica. a.plica.a. Sinica 2012年第2期28卷 209-214页

作者： Sa.ek Ga.a.Xia.-chun chen Depa.tment of Ma.hema.ics University of Mostaganem Box 227 Mostaganem 27000 Algeria Depa.tment of Ma.hema.ics Chonqing Three Gorges University Wanzhou 404000 China

in this pa.er, we study the blow-up criterion of smooth solutions to the 3D ma.neto-hydrodyna.ic system in B^0∞,∞. We show tha. a.smooth solution of the 3D MHD equa.ions with zero kinema.ic viscosity in the whole sp... 详细信息

关键词： Ma.neto-hydrodyna.ic equa.ions with zero viscosity B^0∞,∞ spa.e blow-up criterion

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