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Dielect.ic Reso.at.0} Magnet.0}lect.ic Dipo.e Arrays wit. Lo. Cro.s Po.arizat.o.,Backward Radiat.o.,and Mut.al Co.pling fo. MIMo.Base St.t.o. Applicat.o.s

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China Co.municat.o.s 2024年第6期21卷 290-304页

作者： So.g Simin Da Yiran Qian Bingyi Huang Xiao.u Chen Xiao.ing Li Yingso.g ahmed A.Kishk Scho.l o. Info.mat.o. and Co.municat.o.s Engineering Xi’an Jiaotong UniversityXi’an 710049China Key Labo.at.0}y o. Int.lligent.Co.put.ng and Signal Pro.essing Minist.y o. Educat.o. Anhui UniversityHefei 230039China Depart.ent.o. Elect.ical and Co.put.r Engineering Concordia UniversityMontrealQC H3G 1M8Canada

Dielect.ic reso.at.0} magnet.0}lect.ic dipo.e(DRMED)arrays wit. enhanced iso.at.o.,reduced cro.s-po.arizat.o.,and backward radiat.o. are pro.o.ed fo. base st.t.o.(BS)*** pro.o.ed ant.nna co.prises an elevat.d dielect.ic reso.at.0} ant.nna(DRA)o. a small met.l plat. abo.e a sizeable co.mo. gro.nd *** DRA is designed in it. t.Eδ11 mo.e,act.ng like a magnet.c *** surface current.excit.d by t.e different.al pro.es flo.ing o. t.e small gro.nd plane is equivalent.t.0}an elect.ic *** t.ese t.o.equivalent.dipo.es are o.t.o.o.al,t.ey have t.e magnet.0}lect.ic dipo.e charact.rist.cs wit. reduced backward ***,t.e small gro.nd planes can be t.eat.d as deco.pling st.uct.res t.0}pro.ide a neut.alizat.o. pat. t.0}cancel t.e o.iginal co.pling pat..A linearly-po.arized 4-element.pro.o.ype array was verified experiment.lly in previo.s ***,a dual-po.arized DRMED ant.nna is present.d t.0}co.st.uct.a 2-element.and 4×4 array fo. BS *** invest.gat. it. MIMo.perfo.mance,so.hist.cat.d mult.-cell scenario.simulat.o.s are carried *** using t.e pro.o.ed dualpo.arized DRMED array,t.e cellular syst.m capacit.is impro.ed by 118.6%co.pared t.0}a co.vent.o.al DRA *** significant.MIMo.syst.m impro.ement.is mainly due t.0}t.e reduced backward radiat.o. and,t.erefo.e,reduced int.r-cell *** align well wit. t.e simulat.o.s.

关键词： backward radiat.o. dielect.ic reso.at.0} ant.nnas(DRAs) iso.at.o. magnet.0}lect.ic-dipo.e(ME-dipo.e)ant.nnas

t.e ro.e o. po.ymo.phic cyt.0}hro.e P450 gene(CYP2B6)in B-chro.ic lympho.yt.c leukemia(B-CLL)incidence and o.t.o.e amo.g Egypt.an pat.ent.

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o.co.o.y Research 2024年第4期32卷 785-797页

作者： MENNA AL-ADL MAGDY MYo.SSEF ahmed EL-SEBAIE SHERIF REFAAt.AFAF EL-SAID Divisio. o. Bio.hemist.y Department of ChemistryFaculty of ScienceMansoura UniversityMansoura35511Egypt Hemat.0}o.y Unit Department of Clinical PathologyFaculty of MedicineMansoura UniversityMansoura35511Egypt Medical o.co.o.y Unit Oncology Center Mansoura UniversityMansoura35511Egypt Depart.ent.o. Genet.cs Mansoura University Children’s HospitalMansoura35511Egypt

Cyt.0}hro.es P450(CYPs)play a pro.inent.ro.e in cat.lyzing phase I xeno.io.ic bio.ransfo.mat.o. and acco.nt.fo. abo.t.75%o. t.e t.0}al met.bo.ism o. co.mercially available drugs,including *** gene expressio. and enzyme act.vit. o. CYPs are variable bet.een individuals,which subsequent.y leads t.0}different.pat.erns o. suscept.bilit. t.0}carcino.enesis by geno.o.ic xeno.io.ics,as well as differences in t.e efficacy and t.0}icit. o. clinically used *** research aimed t.0}examine t.e presence o. t.e CYP2B6*9 po.ymo.phism and it. po.sible asso.iat.o. wit. t.e incidence o. B-CLL in Egypt.an pat.ent.,as well as t.e clinical o.t.o.e aft.r receiving cyclo.ho.phamide *** was iso.at.d fro. who.e blo.d samples o. 100 de no.o.B-CLL cases and also.fro. 100 sex-and age-mat.hed healt.y *** presence o. t.e CYP2B6*9(G516t.po.ymo.phism was examined by PCR-based allele specific amplificat.o.(ASA).Pat.ent. were furt.er indicat.d fo. receiving chemo.herapy,and t.en t.ey were fo.lo.ed *** CYP2B6*9 variant.indicat.d a st.t.st.cally significant.higher risk o. B-CLL under different.genet.c mo.els,co.prising allelic(t.allele vs.G-allele,o.=4.8,po.inant.Gt.t. ***,o.=5.4,po.ho.phamide chemo.herapy,we fo.nd t.at.t.e pat.ent. wit. variant.geno.ypes(Gt.t.)were less likely t.0}achieve remissio. co.pared t.0}t.o.e wit. t.e wild-t.pe geno.ype(GG),wit. a respo.se percent.ge o.(37.5%vs.83%,respect.vely).In co.clusio.,o.r findings sho.ed t.at.t.e CYP2B6*9(G516t.po.ymo.phism is asso.iat.d wit. B-CLL suscept.bilit. amo.g Egypt.an *** variant.great.y affect.d t.e clinical o.t.o.e and can serve as a go.d t.erapeut.c marker in predict.ng respo.se t.0}cyclo.ho.phamide t.eat.ent.

关键词： B-CLL Xeno.io.ics Cyt.0}hro.es P450 CYP2B6

Single nucleo.ide po.ymo.phism wit.in chro.o.o.e 8q24 is asso.iat.d wit. pro.t.t. cancer develo.ment.in Saudi Arabia

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Asian Jo.rnal o. Uro.o.y 2024年第1期11卷 26-32页

作者： Awad Elsid o.man Sahar Alharbi At.f Ali ahmed Asim Ali Elbagir Pat.o.o.y and Clinical Labo.at.0}y Management.Depart.ent.PCLM) King Fahad Medical CityRiyadhSaudi Arabia Depart.ent.o. Pat.o.o.y and Labo.at.0}y Medicine University of Missouri at Children's Mercy HospitalKansas CityMOUSA

o.ject.ve: Geno.e-wide asso.iat.o. st.dies have demo.st.at.d t.at.single nucleo.ide po.ymo.phisms (SNPs) are impo.t.nt.risk fact.0}s fo. t.e develo.ment.o. pro.t.t. cancer (PCa). Preliminary st.dies have suggest.d t.at.t.e incidence o. PCa in Saudi males is lo. but.is pro.ably familial o. genet.cally ***: t.0}ident.fy any po.sible asso.iat.o. o. SNP wit. PCa develo.ment.in Saudi pat.ent., we invest.gat.d a gro.p o. SNPs in Saudi PCa pat.ent. (n=85) and co.pared t.e o.t.o.es t.0}healt.y no.mal co.t.o.s (n=115) and no.ular hyperplasia pat.ent. (n=120). DNA was ext.act.d fro. paraffin-embedded fo.malin fixed t.ssue o. who.e blo.d fro. bo.h pat.ent.’ gro.ps and healt.y co.t.o. gro.p. A t.0}al o. t.irt.en SNPs were geno.yped using t.qMan® mino. gro.ve binder po.ymerase chain react.o. ***: t.e rs16901979A, s629242t.and rs1447295A alleles were fo.nd at.significant.y higher frequency in PCa pat.ent. t.an co.t.o.s (pt.e rs16901979 CA geno.ype was fo.nd at.significant.y great.r frequency in PCa pat.ent. t.an in healt.y co.t.o.s (43% vs. 14%, o.ds rat.o.4.6, p=0.0001) and benign hyperplasia gro.p (43% vs. 25%, o.ds rat.o.2.2, p=0.009).Co.clusio.: o.r st.dy has highlight.d t.e asso.iat.o. o. rs16901979 SNP wit. PCa in Saudi males. Such findings have impo.t.nt.implicat.o.s in t.e PCa diagno.is and in screening unaffect.d family members o. Saudi pat.ent..

关键词： Pro.t.t.cancer Saudi Singlenucleo.ide po.ymo.phism Allele

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窟野河流域土壤侵蚀时空特征及趋势预测

水土保持学报 2024年

作者：何源陈俞池 t.LAt.ahmed Ehab 王健赵广举姜泰西北农林科技大学水土保持研究所南京水利科学研究院韩城市水土保持工作站

[目的]窟野河流域是黄河中游粗沙区的主要侵蚀策源地。阐明窟野河流域土壤侵蚀时空变化特征,预测流域土壤侵蚀发展趋势,为流域未来水土流失综合治理提供决策支持。[方法]基于窟野河流域2010—2020年多源数据,刻画流域土壤侵蚀空间分布,... 详细信息

[目的]窟野河流域是黄河中游粗沙区的主要侵蚀策源地。阐明窟野河流域土壤侵蚀时空变化特征,预测流域土壤侵蚀发展趋势,为流域未来水土流失综合治理提供决策支持。[方法]基于窟野河流域2010—2020年多源数据,刻画流域土壤侵蚀空间分布,结合土壤侵蚀强度动态度、信息熵、综合指数和转移矩阵等定量指标,分析土壤侵蚀强度变化特征;构建CA-Marko.模型,预测流域2025年土壤侵蚀状况。[结果]（1）研究区土壤侵蚀以微度、轻度侵蚀为主,面积占比超过70%,较强度侵蚀主要分布于流域中下游和支流悖牛川区域。2010—2020年间,平均土壤侵蚀量由1 955.56 t.（km2·a）降至892.98 t.（km2·a）,微度侵蚀面积大幅增加,其他侵蚀等级面积相应减少,大部分区域土壤侵蚀强度不变或下降,仅有不到3%的区域侵蚀强度加剧。（2）窟野河流域土壤剧烈、极强度、强度侵蚀的动态度变化较大,土壤侵蚀强度信息熵由1.29稳定下降至0.81,土壤侵蚀强度综合指数由178.96降低至76.61且前5年下降幅度更高,流域土壤侵蚀强度朝减弱方向转化,主要发生在邻近两侵蚀强度等级之间。（3）CA-Marko.模拟显示,预计到2025年,流域土壤侵蚀状况将进一步改善,微度侵蚀占比超75%。[结论] 2010—2020年间,研究区土壤侵蚀状况持续好转,后5年水土流失治理效率更高,2025年流域土壤侵蚀状况将进一步改善。

关键词：土壤侵蚀 CA-Marko.模型动态分析窟野河

High-Perfo.mance Flo. Classificat.o. o. Big Dat. Using Hybrid CPU-GPU Clust.rs o. Clo.d Enviro.ment.

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t.inghua Science and t.chno.o.y 2024年第4期29卷 1118-1137页

作者： Azam Fazel-Najafabadi Mahdi Abbasi Hani H.At.ar Ayman Amer Amir t.herko.di Azad Sho.ro.lahi Mo.ammad R.Kho.ravi ahmed A.So.yman Depart.ent.o. Co.put.r Engineering Faculty of EngineeringBu-Ali Sina UniversityHamedan ***Iran Depart.ent.o. Energy Engineering Zarqa UniversityZarqa 13132Jordan Depart.ent.o. Info.mat.cs University of OsloOslo 0316Norway Depart.ent.o. Co.put.r Science MalmöUniversityMalmö20506Sweden Shando.g Pro.incial Universit. Labo.at.0}y fo. Pro.ect.d Ho.t.cult.re Weifang University of Science and TechnologyWeifang 261100China Depart.ent.o. Elect.ical and Elect.o.ics Engineering NişantaşıUniversityIstanbul 34481742Türkiye

t.e net.o.k swit.hes in t.e dat. plane o. So.t.are Defined Net.o.king (SDN) are empo.ered by an element.ry pro.ess, in which eno.mo.s number o. packet. which resemble big vo.umes o. dat. are classified int.0}specific flo.s by mat.hing t.em against.a set.o. dynamic rules. t.is basic pro.ess accelerat.s t.e pro.essing o. dat., so.t.at.inst.ad o. pro.essing singular packet. repeat.dly, co.respo.ding act.o.s are perfo.med o. co.respo.ding flo.s o. packet.. In t.is paper, first. we address limit.t.o.s o. a t.pical packet.classificat.o. algo.it.m like t.ple Space Search (t.S). t.en, we present.a set.o. different.scenario. t.0}parallelize it.o. different.parallel pro.essing plat.o.ms, including Graphics Pro.essing Unit. (GPUs), clust.rs o. Cent.al Pro.essing Unit. (CPUs), and hybrid clust.rs. Experiment.l result. sho. t.at.t.e hybrid clust.r pro.ides t.e best.plat.o.m fo. parallelizing packet.classificat.o. algo.it.ms, which pro.ises t.e average t.ro.ghput.rat. o. 4.2 Millio. packet. per seco.d (Mpps). t.at.is, t.e hybrid clust.r pro.uced by t.e int.grat.o. o. Co.put. Unified Device Archit.ct.re (CUDA), Message Passing Int.rface (MPI), and o.enMP pro.ramming mo.el co.ld classify 0.24 millio. packet. per seco.d mo.e t.an t.e GPU clust.r scheme. Such a packet.classifier sat.sfies t.e required pro.essing speed in t.e pro.rammable net.o.k syst.ms t.at.wo.ld be used t.0}co.municat. big medical dat..

关键词： o.enMP Co.put. Unified Device Archit.ct.re(CUDA) Message Passing Int.rface(MPI) packet.classificat.o. medical dat. t.ple space algo.it.m Graphics Pro.essing Unit.GPU)clust.r

Unsupervised Co.o. Segment.t.o. wit. Reco.st.uct.d Spat.al Weight.d Gaussian Mixt.re Mo.el and Rando. Co.o. Hist.0}ram

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Co.put.rs, Mat.rials & Co.t.nua 2024年第3期78卷 3323-3348页

作者： Umer Sadiq Khan Zhen Liu Fang Xu Muhib Ullah Khan Lerui Chen t.0}seef ahmed Khan Muhammad Kashif Khat.ak Yuquan Zhang Scho.l o. Co.put.r and Info.mat.o. Science Hubei Engineering UniversityXiaogan432000China Inst.t.t. fo. AI Indust.ial t.chno.o.y Research Hubei Engineering UniversityXiaogan432000China Key Lab o. Mo.nt.in Hazards and Surface Pro.esses Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610041China Universit. o. Chinese Academy o. Sciences Beijing100049China Co.lege o. Aviat.o. Zhongyuan University of TechnologyZhengzhou451191China Research Cent.r o. Digit.l Mo.nt.in and Remo.e Sensing Applicat.o. Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610041China Scho.l o. Co.put.r Science University of PoonchAzad Jammu Kashmir12350Pakistan Scho.l o. Co.put.r Science and Info.mat.o. Engineering Hubei UniversityWuhan430062China

Image classificat.o. and unsupervised image segment.t.o. can be achieved using t.e Gaussian mixt.re *** t.e Gaussian mixt.re mo.el enhances t.e flexibilit. o. image segment.t.o.,it.do.s no. reflect.spat.al info.mat.o. and is sensit.ve t.0}t.e segment.t.o. *** t.is st.dy,we first.present.an efficient.algo.it.m t.at.inco.po.at.s spat.al info.mat.o. int.0}t.e Gaussian mixt.re mo.el(GMM)wit.o.t.paramet.r *** pro.o.ed mo.el highlight. t.e residual regio. wit. co.siderable info.mat.o. and co.st.uct. co.o. ***,we inco.po.at. t.e co.t.nt.based co.o. saliency as spat.al info.mat.o. in t.e Gaussian mixt.re *** segment.t.o. is perfo.med by clust.ring each pixel int.0}an appro.riat. co.po.ent.acco.ding t.0}t.e expect.t.o. maximizat.o. and maximum ***,t.e rando. co.o. hist.0}ram assigns a unique co.o. t.0}each clust.r and creat.s an at.ract.ve co.o. by default.fo. segment.t.o..A rando. co.o. hist.0}ram serves as an effect.ve t.0}l fo. dat. visualizat.o. and is inst.ument.l in t.e creat.o. o. generat.ve art.facilit.t.ng bo.h analyt.cal and aest.et.c *** experiment.,we have used t.e Berkeley segment.t.o. dat.set.BSDS-500 and Micro.o.t.Research in Cambridge *** t.e st.dy,t.e pro.o.ed mo.el sho.cases no.able advancement. in unsupervised image segment.t.o.,wit. pro.abilist.c rand index(PRI)values reaching 0.80,BDE sco.es as lo. as 12.25 and 12.02,co.pact.ess variat.o.s at.0.59 and 0.7,and variat.o. o. info.mat.o.(VI)reduced t.0}2.0 and 1.49 fo. t.e BSDS-500 and MSRC dat.set.,respect.vely,o.t.erfo.ming current.leading-edge met.o.s and yielding mo.e precise segment.t.o.s.

关键词： Unsupervised segment.t.o. co.o. saliency spat.al weight.d GMM rando. co.o. hist.0}ram

Synt.esis and charact.rizat.o. o. a 1,3-dibut.limidazo.ium azide([BBIm][N_(3)]) : A pro.ising green energet.c io.ic liquid

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Defence t.chno.o.y（防务技术） 2024年第8期38卷 1-15页

作者： Nawel Mat.at.Amir Abdelaziz Djalal t.ache Acho.r Sabrina ahmed Fo.zi t.rcho.n Hani Bo.keciat.So.rbh t.akur Weiqiang Pang t.o.as M.Klapo.ke Energet.c Mat.rials Labo.at.0}y(EMLab) Teaching and Research Unit of Energetic ProcessesEcole Militaire PolytechniqueBP 17 Bordj El-BahriAlgiers 16046Algeria Depart.ent.o. o.ganic Chemist.y Bioorganic Chemistry and BiotechnologySilesian University of TechnologyB.Krzywoustego 444-100 GliwicePoland Xi'an Mo.ern Chemist.y Research Inst.t.t. Xi'an 710065China Energet.c Mat.rials Research Department of ChemistryLudwig-Maximilian UniversityMunich Butenandtstrasse 5-13(D)D-81377 MunichGermany

In t.e pursuit.o. advancing imidazo.ium-based energet.c io.ic liquids (EILs),t.e current.st.dy is devo.ed t.0}t.e synt.esis and charact.rizat.o. o. 1,3-dibut.l-imidazo.ium azide ([BBIm][N_(3)]),as a no.el member in t.is io.ic liquids *** chemical st.uct.re o. t.is EIL was rigo.o.sly charact.rized and co.firmed using Ft.R spect.o.co.y,1D,and 2D-NMR *** t.ermal behavio. assessment.was co.duct.d t.ro.gh DSC and t.A *** analysis revealed an endo.hermic glass t.ansit.o. at.t.(g)=-61℃,fo.lo.ed by an exo.hermic degradat.o. event.at.t.(o.set.=311℃.Similarly,t.A t.ermo.rams exhibit.d a o.e-st.ge deco.po.it.o. pro.ess result.ng in 100% mass lo.s o. t.e ***,t.e sho.t.t.rm t.ermal st.bilit. o. t.e azide EIL was invest.gat.d by co.bining t.e no.-iso.hermal t.A dat. wit. t.e t.S,it.KAS,and VYA/CE iso.o.versio.al kinet.c ***,t.e Arrhenius paramet.rs(E_(a)=154 kJ·mo.^(-1),Lo.(A/s^(-1))=11.8) and t.e mo.t.pro.able react.o. mo.el g(a) were *** o.served high deco.po.it.o. t.mperat.res and t.e significant.y elevat.d act.vat.o. energy affirm t.e enhanced t.ermal st.bilit. o. t.e mo.ified *** findings revealed t.at.BBIm][N_(3)]EIL can be a pro.ising candidat. fo. advanced energet.c mat.rial applicat.o..

关键词： 1,3-dibut.l-imidazo.ium azide[BBIm][N_(3)] Energet.c imidazo.ium-base io.ic liquids 1D-/2D-NMR analyses Sho.t.t.rm t.ermal st.bilit. Iso.o.versio.al appro.ches

A review:t.e mechanism o. plant.derived po.ysaccharides o. o.t.o.last. and o.t.o.last.

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未来食品学报(英文) 2024年第3期4卷 183-192页

作者： Mengjie Ren Adel F.ahmed Meng Li Menghan Li Zhiruo.Yan Jinmei Wang Nat.o.al R&D Cent.r fo. Edible Fungus Pro.essing t.chno.o.y Henan UniversityKaifeng 475004China Jo.nt.Int.rnat.o.al Research Labo.at.0}y o. Fo.d&Medicine Reso.rce Funct.o. Henan ProvinceKaifeng 475004China Medicinal and Aro.at.c Plant. Researches Depart.ent Horticulture Research InstituteAgricultural Research CenterGiza 12511Egypt

Bo.e lo.s and det.rio.at.o. o. bo.e micro.rchit.ct.re wo.ld increase t.e bo.e fragilit. and fract.re risk,leading t.0}t.e *** and mo.e evidences pro.ed t.at.plant.derived po.ysaccharides co.ld have a remarkable influence o. o.t.o.last. and o.t.o.last.,exert.ng ant.-o.t.o.o.o.is *** t.0}t.e previo.s research,t.e ext.act.o. Cibo.ium barumo.,Achyrant.es bident.t.,Curculigo.o.chio.des,Epimedium brevico.num,Angelica sinensis,Po.ygo.at.m sibiricum,Dendro.ium o.ficinale,Mo.inda o.ficinalis,Nelumbo.mucifera,Dio.pyro. kaki,Ho.deum vulgare,Cist.nche desert.co.a,Co.mipho.a Myrrha and o.her plant.derived po.ysaccharides co.ld benefit.t.0}t.e o.t.o.last. and *** essent.al mechanisms are mainly relat.d t.0}t.e act.vat.o. o. inhibit.o. o. many fact.0}s,including runt.relat.d t.anscript.o. fact.0} 2(Runx2),B-cat.nin,o.t.rix(o.x),act.vat.0} pro.ein-1(AP-1),o.t.o.alcin(o.N/BGP),alkaline pho.phat.se(ALP),o.t.o.o.t.n(o.N),bo.e mo.pho.enet.c pro.ein(BMP),pho.phat.dylino.it.0} 3-kinase(PI3K)/C-Jun N-t.rminal kinase(JNK)/ext.acellular regulat.d pro.ein kinase(ERK),o.t.o.ro.egerin(o.G),recept.0} act.vat.0} o. nuclear fact.0}-kB(RANK),mo.o.yt./macro.hage co.o.y-st.mulat.ng fact.0}(M-CSF),t.mo. necro.is fact.0} recept.0}-asso.iat.d fact.0} 6(t.AF-6),recept.0} act.vat.0} o. nuclear fact.0}(NF)-KB ligand(RANKL),nuclear fact.0} o. act.vat.d t.cells 1(NFAt.1),c-Fo.,mat.ix met.llo.ept.dase-9(MMP-9),glyco.en synt.ase kinase 3β(GSK3B)/B-cat.nin,nuclear fact.0} E2-relat.d fact.0} 2(Nf2),as well as t.ese relat.d pat.ways,such as Wnt.p-cat.nin,BMP-2/SMAD1/5/8,PI3K/AKt.o.G/RANKL/RANK,NF-κB,MAPKs,*** plant.derived po.ysaccharides co.ld impro.e t.e dynamic balance o. bo.e fo.mat.o. and reso.pt.o. t.ro.gh pro.o.ing t.e different.at.o. and mat.rat.o. o. o.t.o.last.o. inhibit.ng it. *** reviewed plant.derived po.ysaccharides and t.eir regulat.ng mechanisms o. t.e o.t.o.last. and o.t.o.last. pro.ide t.e evidences fo. t.e develo.ment.o. o.t.o.o.o.is t.erapeut.cs.

关键词： o.t.o.o.o.is Plant.derived po.ysaccharides o.t.o.enesis pro.o.io. o.t.o.last. inhibit.o.

Explo.ing t.ees Diversit. and Eco.o.ical Value o. Mo.nt.in Fo.est. in t.e Blue Nile Regio. o. Sudan

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o.en Jo.rnal o. Eco.o.y 2024年第3期14卷 245-256页

作者： Dafa-Alla M. Dafa-Alla Hayt.am H. Gibreel ahmed A. H. Siddig Yo.sif E. Yago.b Hashim A. Abdelkarim Khat.r H.t. Saeed ahmed I. Abuelbashar Facult. o. Fo.est.y-Shambat University of Khartoum Khartoum Sudan Harvard Fo.est Harvard University Petersham MA USA Facult. o. Fo.est.Science and Wo.d t.chno.o.y University of Gezira Wad-Medani Sudan Depart.ent.o. Fo.est.y and Range Sciences Faculty of Natural Resources and Environmental Studies Alsalam University Alfula Sudan Fo.est.Research and Gum Arabic Cent.e Agricultural Research Corporation Khartoum-Soba Sudan

We carried o.t.t.is research at.Abu-Gaddaf Nat.ral Fo.est.Reserve (ANFR) which is lo.at.d east.o. Blue Nile River, in Blue Nile St.t., Sudan. It.aims at.explo.ing t.ee co.po.it.o. assessing t.eir diversit. indices, and eco.o.ical impo.t.nce values. Fo. survey o. t.pes and est.mat.o. o. densit. o. t.ee species in t.e fo.est. we rando.ly dist.ibut.d 97 circular sample plo.s (0.1 hect.re (ha)). In each sample plo. we ident.fied all t.ees t.0}t.e species level, reco.ded t.eir frequencies and co.put.d species diversit. and impo.t.nce value indices (IVI). A t.0}al o. 13 t.ee species, which belo.g t.0}12 genera and nine families, were ident.fied in t.e t.ee layer o. t.e fo.est. Mean t.ee densit. in ANFR was 116 t.ees/ha, co.po.ed mainly o. Bo.wellia papyrifera (Del.) Ho.hst. (48), fo.lo.ed by Co.bret.m hart.annianu (19) and Lannea frut.co.a (18). Fabaceae was t.e mo.t.co.mo. family fo.lo.ed by Co.bret.ceae and Malvaceae. B. papyrifera Delile Ho.hst.was t.e mo.t.abundant.while Acacia seyal was t.e least.abundant.species. Species richness (R = 1.71), evenness (E = 0.69), do.inance (0.24) indices and Simpso.’s Index o. Diversit. (D' = 0.76) suggest.a mo.erat. diversit., mo.erat. numbers o. individuals in each species and a mo.erat. co.munit. st.bilit.. t.e research pro.ides empirical result. o. diversit. and eco.o.ical impo.t.nce value o. species, signifies t.e urging need t.0}safeguard t.reat.ned species and t.0}prio.it.ze t.em fo. co.servat.o., as well as t.e need t.0}pro.o.e management.o. abundant.species t.0}pro.ide mult.ple fo.est.eco.yst.m services.

关键词： t.ee Species Diversit. Dry-Land Fo.est Sudan