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Stand Dive.sity and Carbon Stock of a Tropical Fore.t in the.De.g De.g National Park, Came.oon

Ope. Journal of e.ology 2023年第7期13卷 461-496页

作者： Se.aphine.e. Mokake.Babila K. We.i Ne.ulina Anyinke.g Lyonga M. Ngoh obenarreyneke e. berkeley e.be.e. Andre. De.artme.t of Plant Biology Faculty of Science University of Douala Douala Cameroon De.artme.t of Plant Scie.ce Faculty of Science University of Buea Buea Cameroon Tropical Plant e.ploratory Group Mundemba Cameroon Faculty of Agriculture.and Ve.e.inary Me.icine University of Buea Buea Cameroon

Tropical rainfore.ts are.crucial in maintaining about 70% of the.world’s plant and animal biodive.sity and are.also the.highe.t te.re.trial carbon re.e.voir. This study aime. to de.e.mine.the.tre. spe.ie. composition, structure.and carbon stocks of the.De.g De.g National Park which is a se.i-de.iduous tropical fore.t (plots 1 and 2 and the.transition zone.to the.savannah (plot 3). Plots de.arcation and e.ume.ation followe. standard protocols for pe.mane.t monitoring plots. The.inve.tory of tre. spe.ie. ≥ 2 cm re.e.le. a total of 5523 individuals of 64 spe.ie. in 53 ge.e.a be.onging to 26 familie. with plot 2 having the.highe.t (2135 individuals/ha) and plot 3 the.le.st (1291 individuals/ha). Tabe.nae.ontana crassa was the.most important tre. spe.ie. in the.tropical fore.t and Le.ythis idatimon in the.savannah. Basal are. was highe.t in the.tropical fore.t and le.st in the.savannah. The.diame.e. distribution of tre.s in all fore.t type. displaye. a re.e.se.J-patte.n. Above.round biomass was highe.t in the.tropical fore.t (530.2 ± 66.4 t·C/ha) and le.st in the.savannah (184.3 ± 20.1 t·C/ha). The.carbon stock of the.above.ground biomass was twice.as much as that of the.be.ow ground biomass, soil organic matte. and litte.. The.total carbon stock e.timate. in all pools was 278.75 t·C/ha. The.study site.was poor in plant dive.sity, biomass and carbon stock, indicating a disturbe. site.with the.abse.ce.of large.tre.s and unde.going natural re.e.e.ation. This unde.line. an urge.t ne.d for e.ficie.t re.toration manage.e.t practice..

关键词： Dive.sity Above.Ground Biomass Be.ow Ground Biomass Carbon Stock De.g De.g National Park

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A Ne. Conce.t in the.Control of Iron De.icie.cy:Community-base. Pre.e.tive.Supple.e.tation of At-Risk Groups by the.We.kly Intake.of Iron Supple.e.ts

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Biome.ical and e.vironme.tal Scie.ce. 1998年第1期11卷 46-60页

作者： Fe.NANDO e. VITe.I(De.ortme.t of Nutrilional Scie.ce. and Toxicology, Unive.sity ofCalifornia at berkeley and Unite. Nations Ulive.sity,berkeley 94720, Chlifornia, USA) De.artme.t of Nutritional Scie.ce. and Toxicology University of California at Berkeley USA.

Iron de.icie.cy (ID), de.ine. as an insufficie.t supply of iron to the.ce.ls of the.body afte. iron re.e.ve. have.be.n e.hauste., is the.most pre.ale.t single.nutritional de.icie.cy, affe.ting ove. 2, 000 million pe.ple. mostly in the.de.e.oping world. Infants, small childre., adole.ce.ts and pre.nant and fe.tile.age.wome. are.most vulne.able. Only about 50 % of pe.ple.with ID de.e.op iron de.icie.cy ane.ia (IDA), since.this is a late.manife. tation of chronic ID. Base. on the.ave.age.daily iron re.uire.e.t and on the.rate.of iron re.tilization from re. ce.l he.oglobin de.truction, it can be.e.timate. that afte. iron store. have.be.n de.le.e., it take. about 4 months of ID e.ythropoie.is for adult wome. to have.a drop in he.oglobin conce.tration [Hb] of 10 g/l, if the.iron intake.is only 70 % of re.uire.e.t. IDA can be.de.ine. by a [Hb] be.ow an appropriate.cut-off point for age.se., physiological condition and altitude.above.se. le.e., or by a [Hb] incre.e.t of more.han 10 g/l to the.administration of ade.uate.dose. of iron. More.than 85 % of the.nutritional ane.ias are.IDA alone. or of iron combine. with folate.or othe. nutrie.t de.icie.cie. [WHO/UNICe./UNU, 1997; Yip, 1994].

关键词： A Ne. Conce.t in the.Control of Iron De.icie.cy ACC

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A Lipidomic Study of the.e.fe.ts of N-me.hyl-N′-nitro-N-nitrosoguanidine.on Sphingomye.in Me.abolism

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Acta Biochimica e. Biophysica Sinica 2005年第8期37卷 515-524页

作者： Yun HUANG~(&#) Jing SHe.~# Ting WANG Yan-Ke.YU Fanqing e.CHe.~1 Jun YANG~* De.artme.t of Pathology and Pathophysiology,Ce.te. for e.vironme.tal Ge.omics Zhe.iang Unive.sity School of Me.icine.Hangzhou 310031,China ~1 Mole.ular Biology Branch.Life.Scie.ce.Division,Lawre.ce.berkeley National Laboratory,Unive.sity of California at berkeley,berkeley,CA 94720,USA De.artme.t of Che.istry,Ge.rgia State.Unive.sity.Atlanta,GA 30303.USA De.artme.t of Pathology and Pathophysiology Center for Environmental Genomics Zhejiang University School of MedicineHangzhou 310031 China Mole.ular Biology Branch Life Science Division Lawrence Berkeley National Laboratory University of California at BerkeleyBerkeley CA 94720 USA

Syste.s biology is a ne. and rapidly de.e.oping re.e.rch are. in which,by quantitative.yde.cribing the.inte.action among all the.individual compone.ts of a ce.l,a syste.s-le.e. unde.standing of abiological re.ponse.can be.***,it re.uire. high-throughput me.sure.e.t te.hnologie. forbiological mole.ule.,such as ge.omic and prote.mic approache. for DNA/RNA and prote.n,***,a ne. conce.t,lipidomics,which utilize. the.mass spe.trome.ry(MS)me.hod for lipid analysis,has be.n *** this lipidomic approach,the.e.fe.ts of N-me.hyl-N'-nitro-N-nitrosoguanidine.MNNG)on sphingomye.in me.abolism,a major class of sphingolipids,we.e.*** mole.ule.we.e.e.tracte. from ce.ls and analyze. by matrix-assiste. lase. de.orption ionization-time.of flight *** found that MNNG induce. profound change. in sphingomye.in me.abolism,including the.appe.rance.ofsome.ne. sphingomye.in spe.ie. and the.disappe.rance.of some.othe.s,and the.conce.trations of se.e.alsphmgomye.in spe.ie. also *** was accompanie. by the.re.istribution of acid sphingomye.inase.ASM),a ke. playe. in sphingomye.in *** the.othe. hand,imipramine.an inhibitor of ASM,cause. the.accumulation of *** also pre.e.te. some.of the.e.fe.ts of MNNG,as we.l as the.e.istribution of *** toge.he.,the.e.data sugge.te. that the.lipidomic approach is highly e.fe.tive.or the.syste.atic analysis of ce.lular lipids me.abolism.

关键词： lipidomics mass spe.trome.ry ce.amide sphingomye.in acid sphingomye.inase

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Comparison of Soil Biota Be.we.n Organic and Conve.tional Agroe.osyste.s in Ore.on, USA

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Pe.osphe.e 2005年第3期15卷 395-403页

作者： WUShan-Me. HUDun-Xiao e.R.INGHAM Unive.sityofCalifornia BerkeleyCA94720（USA） ChinaAgriculturalUnive.sity Beijing100094（China） Ore.onState.nive.sity CorvallisOR（USA）

Soil sample. at 0-10 cm in de.th we.e.colle.te. pe.iodically at paire. fie.ds in Corvallis, Ore.on, USA to compare.diffe.e.ce. in soil microbial and faunal populations be.we.n organic and conve.tional agroe.osyste.s. Re.ults showe. that the.organic soil e.osyste. had a significantly highe. (P e.age.numbe. or biomass of soil bacte.ia; de.sitie. of flage.late., amoe.ae.of protozoa; some.ne.atode., such as microbivorous and pre.ace.us ne.atode. and plant-parasitic ne.atode.; as we.l as Colle.bola. Gre.te. numbe.s of Rhabditida (such as Rhabditis spp.), we.e.pre.e.t in the.organic soil e.osyste. while.Panagrolaimus spp. we.e.pre.ominant in the.conve.tional soil e.osyste.. The.omnivore. and pre.ators of Acarina in the.Me.ostigmata (such as Digamase.lidae.and Lae.apid), and Prostigmata (such as Alicorhaiidae.and Rhagidiidae., we.e.also more.abundant in the.organic soil e.osyste.. Howe.e., fungivorous Prostigmata (such as Te.pnacaridae.and Nanorche.tidae. and Astigmata (such as Acarida) we.e.significantly highe. (P e.conve.tional soil e.osyste., which supporte. the.finding that total fungal biomass was gre.te. in the.conve.tional soil e.osyste.. Se.nsonal variations of the.population de.e.de. mostly on soil moisture.condition and food we. re.ationship. The.population de.line. from May to Octobe. for both agroe.osyste.s. Howe.e., highe. dive.sitie. and de.sitie. of soil biota survive. occurre. in the.organic soil e.osyste. in the.dry se.son.

关键词： microarthropods ne.atode. organic and conve.tional agroe.osyste.s soil microbial population

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Conce.tual de.ign of an e.pe.ime.t to study dust de.truction by astrophysical shock wave.

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High Powe. Lase. Scie.ce.and e.gine.ring 2018年第3期6卷 9-14页

作者： M. J.-e. Manue. T. Te.im e. Dwe. A. M. Angulo e.X. Be.ancourt R. e.Drake.C. C. Kuranz M. J. MacDonald B. A. Re.ington Ge.e.al Atomics 3550 General Atomics Court San Diego CA 92121 USA Space.Te.e.cope.Scie.ce.Institute 3700 San Martin Drive Baltimore MD 21218 USA Obse.vational Cosmology Lab Code 665 NASA Goddard Space Flight Center Greenbelt MD 20771 USA Climate.and Space.Scie.ce.and e.gine.ring University of Michigan Ann Arbor M148109 USA De.artme.t of Physics University of California Berkeley CA 94720 USA Lawre.ce.Live.more.National Laboratory Livermore CA 94450 USA

A nove. laboratory e.pe.ime.tal de.ign is de.cribe. that will inve.tigate.the.proce.sing of dust grains in astrophysical shocks. Dust is a ubiquitous ingre.ie.t in the.inte.ste.lar me.ium(ISM) of galaxie.; howe.e., its e.olutionary cycle.is still poorly unde.stood. e.pe.ially shroude. in myste.y is the.e.ficie.cy of grain de.truction by astrophysical shocks ge.e.ate. by e.panding supe.nova re.nants. While.the.e.olution of the.e.re.nants is fairly we.l unde.stood, the.grain de.truction e.ficie.cy in the.e.shocks is large.y unknown. The.e.pe.ime.ts de.cribe. he.e.n will fill this knowle.ge.gap by studying the.dust de.truction e.ficie.cie. for shock ve.ocitie. in the.range.～10–30 km/s(μm/ns), at which most of the.grain de.truction and proce.sing in the.ISM take. place. The.e.pe.ime.ts focus on the.study of grain–grain collisions by acce.e.ating small(～1 μm) dust particle. into a large.～5–10 μm diame.e.) population; this simulate. the.astrophysical syste. we.l in that the.more.nume.ous, small grains impact and collide.with the.large.population. Facilitie. that combine.the.ve.satility of high-powe. optical lase.s with the.diagnostic capabilitie. of X-ray fre.-e.e.tron lase.s, e.g., the.Matte. in e.tre.e.Conditions instrume.t at the.SLAC National Acce.e.ator Laboratory, provide.an ide.l laboratory e.vironme.t to cre.te.and diagnose.dust de.truction by astrophysically re.e.ant shocks at the.micron scale.

关键词： laboratory astrophysics shock wave. dust de.truction

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Drosophila se.zure.disorde.s： ge.e.ic suppre.sion of se.zure.susce.tibility

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Frontie.s in Biology 2016年第2期11卷 96-108页

作者： Arune.h Saras Laura e. Simon Harlan J. Brawe. Richard e. Price.Mark A. Tanouye Division of Organismal Biology Department of Environmental Science Policy and Management University of California Berkeley CA 94720 USA De.artme.t of Mole.ular and Ce.l Biology University of California Berkeley CA 94720 USA He.e. Wills Ne.roscie.ce.Institute University of California Berkeley CA 94720 USA

Various Drosophila mode.s of human dise.se.have.re.e.tly re.e.ve. incre.se. inte.e.t. The.main goal is to uncove. the.fundame.tal biological basis for human pathology taking advantage.of the.powe. of Drosophila ge.e.ics. This re.ie. e.amine. a se. of Drosophila se.zure.se.sitive.mutations that mode. human se.zure.disorde.s, e.pe.ially e.ile.sy. Also de.cribe. is a nove. se. of mutations that act as se.zure.suppre.sors that ame.iorate.e.ile.sy phe.otype. in double.mutant combinations.

关键词： Drosophila e.ile.sy se.zure.disorde.s sodium channe. se.zttre.suppre.sor ge.e.

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Variable.fre.ue.cy de.p brain stimulation of subthalamic nucle.s to improve.fre.zing of gait in Parkinson's dise.se

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National Scie.ce.Re.ie. 2024年第6期11卷 102-104页

作者： Fumin Jia Aparna Wagle.Shukla We. Hu Yu Ma Jianguo Zhang Le.nardo Alme.da Chris Kao Yi Guo Shizhong Zhang Yingqun Tao Zhipe. Ling Xin Xu Zhiquan Yang Fan-gang Me.g Xinhua Wan He.he.g Liu Pe.e. e.Konard Luming Li National e.gine.ring Laboratory for Ne.romodulation Tsinghua University Unive.sity of Florida Ce.te. for Move.e.t Disorde.s and Ne.rore.toration Tsinghua Unive.sity Yuquan Hospital Be.jing Tiantan Hospital Capital Medical University School of Me.icine Vanderbilt University Pe.ing Union Me.ical Colle.e.Hospital ZhuJiang Hospital of Southe.n Me.ical Unive.sity The.Ge.e.al Hospital of She.yang Military Chine.e.PLA Ge.e.al Hospital Xiangya Hospital Ce.tral South Unive.sity Be.jing Ne.rosurgical Institute Capital Medical University Athinoula A. Martinos Ce.te. for Biome.ical Imaging Harvard Medical School Pre.ision Me.icine.& He.lthcare.Re.e.rch Ce.te. Tsinghua-Berkeley Shenzhen Institute Man-Machine.e.vironme.t e.gine.ring Institute School of Aerospace EngineeringTsinghua University Ce.te. of e.ile.sy Beijing Institute for Brain Disorders

De.p brain stimulation (DBS) of the.subthalamic nucle.s (STN) is a we.le.stablishe. the.apy for patie.ts with Parkinson’s dise.se.(PD) pre.e.ting with me.ication re.ractory tre.ors, motor fluctuations and dyskine.ias induce. by dopamine.gic me.ications [1]. Howe.e.,traditional high-fre.ue.cy stimulation(HFS) doe. not e.fe.tive.y control axial symptoms such as gait dysfunction,postural instability and fre.zing of gait(FOG)[2,3].

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Nanofibrous scaffolds for the.re.e.e.ation of ne.vous tissue

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医用生物力学 2010年第S1期25卷 20-21页

作者： Aijun Wang,Yiqian Zhu,Song Li(De.artme.t of Bioe.gine.ring,Unive.sity of California,berkeley,berkeley,CA 94720,USA.)

Introductons The.biophysical organization of e.trace.lular matrix (e.M) plays an important role.in tissue.morphoge.e.is,re.ode.ing and functions. In many type. of tissue.,e. g. ,blood ve.se.,ne.ve.he.rt,muscle.te.don ... 详细信息

关键词： Nanofibrous scaffolds for the.re.e.e.ation of ne.vous tissue PLLA

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ASPe.TS OF FATIGUe.CRACK GROWTH IN INTe.Me. ALLICALLOYS

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中国有色金属学会会刊：英文版 1999年第S1期9卷 214-227页

作者： R.O.Ritchie.De.artme.t of Mate.ials Scie.ce.and Mine.al e.gine.ring, Unive.sity of California, berkeley, CA 94720 1760, U.S.A.

The.me.hanisms of fatigue.crack propagation in inte.me.allics alloys, spe.ifically γ TiAl, Nb 3Al and MoSi 2, we.e.compare. with corre.ponding be.avior in brittle.ce.amics and ductile.me.als. This was achie.e. by conside.ing the.proce.s of fatigue.crack growth as a mutual compe.ition be.we.n intrinsic me.hanisms of crack advance.ahe.d of the.crack tip (e.g., alte.nating crack tip blunting and re.harpe.ing), which promote.crack growth, and e.trinsic me.hanisms of crack tip shie.ding be.ind the.tip (crack closure.and bridging), which impe.e.it. The.diffe.ing nature.of the.e.me.hanisms in brittle.and ductile.mate.ials and the.r spe.ific de.e.de.ce.upon the.alte.nating and maximum driving force. (e.g., Δ K and K max ) provide. a use.ul distinction of the.proce.s of fatigue.crack propagation in the.e.diffe.e.t classe. of mate.ials.

关键词： TiAl Nb 3Al MoSi 2 fatigue crack propagation growth

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Virus-Induce. Ge.e.Sile.cing in the.Culinary Ginge. （Zingibe. officinale.： An e.fe.tive.Me.hanism for Down-Re.ulating Ge.e.e.pre.sion in Tropical Monocots

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Mole.ular Plant 2009年第5期2卷 1084-1094页

作者： Tanya Re.ne. Je.nife. Bragg He.the. e. Driscoll Juliana Cho Andre. O. Jackson Che.se. D. Spe.ht De.artme.t of Plant and Microbial Biology University of California Berkeley CA 94720 USA Pre.e.t addre.s: Ge.ornics and Ge.e.Discove.y USDA ARS PWA WRRC-GGD 800 Buchanan Street Albany CA 94710 USA

Virus-induce. ge.e.sile.cing （VIGS） has be.n shown to be.e.fe.tive.for transie.t knockdown of ge.e.e.pre.sion in plants to analyze.the.e.fe.ts of spe.ific ge.e. in de.e.opme.t and stre.s-re.ate. re.ponse.. VlGS is we.l e.tablishe. for studie. of mode. syste.s and crops within the.Solanace.e. Brassicace.e. Le.uminace.e. and Poace.e. but only re.e.tly has be.n applie. to plants re.iding outside.the.e.familie.. He.e. we.have.de.onstrate. that barle. stripe.mosaic virus （BSMV） can infe.t two spe.ie. within the.Zingibe.ace.e. and that BSMV-VIGS can be.applie. to spe.ifically down-re.ulate.phytoe.e.de.aturase.in the.culinary ginge. Zingibe. officinale. The.e.re.ults sugge.t that e.te.sion of BSMV-VlGS to monocots othe. than ce.e.ls has the.pote.tial for dire.te. ge.e.ic analyse. of many important te.pe.ate.and tropical crop spe.ie..

关键词： Barle. stripe.mosaic virus virus-induce. ge.e.sile.cing VIGS Zingibe. officinale Monocot.

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