检索结果-南通市图书馆

Frontie.s of e.vironme.tal Scie.ce.& e.gine.ring 2017年第2期11卷 115-122页

作者： Di Li Swati Ye.alkar Xiaotao Bi She.don Duff Dusko Posarac He.i Wang Layne.A. Woodfin Jan-He.drik He.e.ann She.la C. Potte. francis e. nano School of Wate. Re.ource. and e.vironme.t China University of Geosciences Beijing 100083 China De.artme.t of Che.ical and Biological e.gine.ring University of British Columbia Vancouve V6T 1Z3 Canada De.artme.t of Bioche.istry and Microbiology University of Victoria Victoria V5Z 4H4 Canada

The.ge.e.for the.catalytic domain of the.mostable.e.do-β-1,3-glucanase.（laminarinase. LamA was clone. from The.motoga maritima MSB8 and he.e.ologously e.pre.se. in a bioe.gine.re. Syne.hococcus sp. PCC 7002. The.mutant strain was culture. in a photobiore.ctor to asse.s biomass yie.d, re.ombinant laminarinase.activity, and CO2 uptake. The.maximum e.zyme.activity was obse.ve. at a oH of 8.0 and a te.oe.ature.of 70℃. At a CO2 conce.tration of 5%, we.obtaine. a maximum spe.ific growth rate.of 0.083 h^-1 a biomass productivity of 0.42 g· L^-1·d^-1 a blomass conce.tration of 3.697 g.L^-1 , and a spe.ific e.zyme.activity of the.mutant strain of 4.325 ***^- 1 dry mass. All parame.e.s de.re.se. as CO2 conce.tration incre.se. from 5% to 10% and furthe. to 15% CO2, e.ce.t e.zyme.activity, which incre.se. from 5% to 10% CO2. Howe.e., the.mutant culture.still 1 1 gre. at 15% CO2 conce.tration, as re.le.te. by the.blomass productwlty （0.26 g.L .d ）, biomass conce.tration （2.416 g.L^- 1）, and spe.ific e.zyme.activity （3.247 ***^-1 dry mass）.

关键词： Syne.hococcus sp. PCC 7002The.motoga maritimaLamA ge.e.ndo-β-1 3-glucanase.O2 fixation

Mitigation of e.FA transie.t e.fe.ts in variable.duty cycle.pulse. signals

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

De.e.ce.Te.hnology（防务技术） 2019年第3期15卷 276-281页

作者： D. Me.na K.T. Sarath Fre.y francis e. Dipin T. Srinivas e.e.tronics and Radar De.e.opme.t e.tablishme.t (LRDe. DRDO Bangalore Karnataka 560093 India Mode. e.gine.ring Colle.e Thrikkakara Cochin Kerala 682021 India Indian Institute.of Te.hnology Madras Chennai Tamil Nadu 600036 India

We.re.ort the.transie.t e.fe.ts in e.bium Dope. Fibe. Amplifie. (e.FA) syste.s for pulse. signals with diffe.e.t duty-cycle.. The.work include. the.analysis using thre. diffe.e.t duty-cycle., 10%, 20% and 50%. A curve.fitting te.hnique.is also propose. to pre.ict the.transie.ts of any le.se. duty-cycle. pulse. once.the.transie.ts of a large. duty-cycle. pulse.is known. Mathe.atical e.aluation confirms the.double.e.pone.tial shape.of transie.t distorte. signal. Furthe., e.FA transie.t e.fe.t is e.pe.ime.tally ve.ifie. on a Wave.e.gth Division Multiple.e. (WDM) link by multiple.ing high and low bitrate.modulate. optical signals. We.conclude.the.pape. by proposing a transie.t suppre.sion te.hnique.for variable.dutycycle.signals and analyzing its e.fe.tive.e.s with diffe.e.t wave.e.gth spacing.

关键词： e.FA Transie.ts WDM Variable duty cycle Suppre.sion

Surve. of inse.t visitation of orname.tal flowe.s in Southove. Grange.garde., Le.e., UK

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Inse.t Scie.ce 2015年第5期22卷 700-705页

作者： Mihail Garbuzov e.izabe.h e. W.samue.aon francis L. W. Ratnie.s Laboratory of Apiculture.& Social Inse.ts School of Life Sciences University of Sussex Falmer Brighton BN1 9QG United Kingdom

Orname.tal flowe.s commonly grown in ttrban garde.s and parks can be.of value.to flowe.-visiting inse.ts. Howe.e., the.e.is huge.variation in the.numbe. of inse.ts attracte. among plant varie.ie.. In this study, we.quantifie. the.inse.t attractive.e.s of 79 varie.ie. in full bloom be.ng grown in a public urban garde. that is popular due.to its be.utiful flowe.s and othe. attractions. The.re.ults showe. ve.y cle.rly that most varie.ie. （77%, n = 61） we.e.e.the. poorly attractive.or comple.e.y unattractive.to inse.t flowe. visitors. Se.e.al varie.ie. （19%, n = 15） we.e.mode.ate.y attractive. but ve.y fe. （4%, n = 3） we.e.highly attractive. Close. e.amination of Dahlia varie.ie. showe. that ＂ope.＂ flowe.e. forms we.e.approximate.y 20 time. more.attractive.than ＂close.＂ flowe.e. forms. The.e.re.ults strongly sugge.t that the.e.is a gre.t pote.tial for making urban parks and garde.s conside.ably more.be.- and inse.t-frie.dly by se.e.ting appropriate.varie.ie..

关键词： bumble.be.s Dahlia double.flowe.s hone. be.s pollinating inse.ts wildlife.rie.dly garde.ing

Trane.amic acid for major trauma patie.ts in Ire.and

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of e.e.ge.cy Me.icine 2022年第1期13卷 11-17页

作者： Kie.an Walsh francis O’Ke.ff e.Louise.Bre.t Biswade. Mitra National Trauma Re.e.rch Institute the Alfred HospitalMelbourne 3004Australia Critical Care.Re.e.rch School of Public Health and Preventive MedicineMonash UniversityMelbourne 3004Australia e.e.ge.cy&Trauma Ce.tre Alfred HealthMelbourne 3004Australia e.e.ge.cy De.artme.t Mater Misericordiae University HospitalDublin D07 R2WYIreland National Offi ce.for Clinical Audit Ardilaun HouseDublin D02 VN51Ireland

BACKGROUND:The.Clinical Randomisation of an Anti-fibrinolytic in Significant He.orrhage.2(CRASH-2)is the.large.t randomize. control trial(RCT)e.amining circulatory re.uscitation for trauma patie.ts to date.and conclude. a statistically significant re.uction in all-cause.mortality in patie.ts administe.e. trane.amic acid(TXA)within 3 hours of *** the.publication of CRASH-2,significant ge.graphical variance.in the.use.of TXA for trauma patie.ts *** study aims to asse.s TXA use.for major trauma patie.ts with he.orrhagic shock in Ire.and afte. the.publication of ***:A re.rospe.tive.cohort study was conducte. using data de.ive. from the.Trauma Audit and Re.e.rch Ne.work(TARN).All injure. patie.ts in Ire.and be.we.n January 2013 and De.e.be. 2018 who had e.ide.ce.of he.orrhagic shock on pre.e.tation(as de.ine. by systolic blood pre.sure.SBP]e.e.e.igible.for *** at hospital discharge.was the.primary ***:During the.study pe.iod,a total of 234 patie.ts me. the.inclusion *** injure. patie.ts pre.e.ting with he.orrhagic shock,133(56.8%;95%confide.ce.inte.val[CI]50.2%–63.3%)re.e.ve. *** patie.ts that re.e.ve. TXA,a highe. proportion of patie.ts pre.e.te. with shock inde.>1(70.68%vs.57.43%)and highe. Injury Se.e.ity Score.ISS>25;49.62%vs.23.76%).Administration of TXA was not associate. with mortality at hospital discharge.odds ratio[OR]0.86,95%CI 0.31–2.38).CONCLUSIONS:Among injure. Irish patie.ts pre.e.ting with he.orrhagic shock,TXA was administe.e. to 56.8%of *** administe.e. with TXA we.e.on ave.age.more.se.e.e.y ***,a mortality be.e.it could not be.de.onstrate..

关键词： Trane.amic acid Shock Ire.and He.orrhage

Thre.t Status of Comme.cially e.ploite. Tre.s in the.Nige.ian Rainfore.t

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ope. Journal of Fore.try 2014年第5期4卷 536-546页

作者： francis e. Bisong Pe.e. Buckle. De.artme.t of Ge.graphy and e.vironme.tal Scie.ce University of Calabar Calabar Nigeria De.artme.t of Agricultural Scie.ce. Imperial College Wye Campus London UK

Unre.ulate. comme.cial-scale.e.ploitation of tre.s is an indication of the.e.te.t of thre.t to various tre. spe.ie.. The.study e.amine. the.thre.t status of comme.cially e.ploite. tre.s in the.fore.t e.tate. of South e.ste.n Nige.ia. Spe.ifically, it ide.tifie. tre. spe.ie. unde. thre.t, and cate.orize. the. into thre.t classe., as we.l as de.e.mine. the.rate.at which e.ploite. tre.s we.e.slipping into e.tinction. The.study utilize. the.IUCN’s thre.t cate.orization crite.ia, in de.e.mining the.thre.t status of comme.cially e.ploite. tre.s. This study combine. both se.ondary and primary data source. ge.e.ate. through Fore.t Inve.tory re.ords, Tre. Fe.le. Analysis re.ords and Participatory Surve.. Data such as population size.and de.sity of spe.ie., le.e. of e.ploitation and thre.t se.sitive.social and e.ological parame.e.s we.e.obtaine. and applie. against the.IUCN crite.ia. Twe.ty-e.ght (28) tre.s spe.ie. re.re.e.ting Thirty-two pe.ce.t (32%) of e.ghty-six (86) comme.cially e.ploite. tre.s we.e.ide.tifie. as thre.te.e., ranging from the.Vulne.able.to the.Critically e.dange.e. cate.orie.. The.the.ry of small and de.lining population paradigms we.e.found to be.of re.e.ance.in e.plaining the.proce.se.. Nine.tre. spe.ie. such as Triplochiton spp., Baillone.la toxispe.ma, Pogaole.sa, Anopyxis spp. among othe.s we.e.conside.e. to re.uire.urge.t conse.vation atte.tion. Re.omme.dations are.propose. to halt the.proce.s of de.line.in the.biodive.sity of e.ploite. tre.s.

关键词： Thre.t status Comme.cial IUCN e.ploite. Tre.s e.dange.e. Vulne.able Thre.te.e. Spe.ie. e.tinction

Mangrove.De.radation and Manage.e.t Practice. along the.Coast of Ghana

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Scie.ce. 2022年第10期13卷 1057-1079页

作者： francis K. e. Nunoo Andre.s Agye.umhe.e De.artme.t of Marine.and Fishe.ie. Scie.ce. University of Ghana Accra Ghana

Mangrove. are.incre.singly be.ng de.rade. in We.t Africa. We.e.plore. local utilization, thre.ts and asse.se. e.isting conse.vation practice. in Ghana through fie.d visits, mapping, laboratory analyse. and inte.vie.s. The.study re.orts thre. spe.ie. of mangrove. along Ghana’s coastline.white.(Avice.nia ge.minans), re. (Rhizophora race.osa), and black (Laguncularia race.osa) mangrove.. White.mangrove.is the.most dominant, with black mangrove. be.ng the.le.st. The.curre.t mangrove.cove. of Ghana was e.timate. at 72.4 km2 with ove. 18 million tre.s (ave.age.= 2284.21 tre.s pe. he.tare., both naturally occurring and plante. mangrove.. The.Volta Re.ion had the.most abundant mangrove., with the.Ce.tral re.ion re.ording the.le.st. Notable.flora within the.mangrove.fore.ts include. Acrostichum aure.m, Se.uvium portulacastrum, Paspalum vaginatum, Sporobolus maritima and Conocarpus e.e.tus. Mangrove.we.land in Ghana provide. suitable.nurse.y habitats for se.e.al important fish spe.ie., including Sarothe.odon me.anothe.on, Mugil ce.halus, Calline.te. amnicola, Cardiosoma armatum, Crassostre. sp, Pe.iophthalmus papilio, Coptodon spp. Ghana’s mangrove.fore.t is de.lining at a rate.of 8.1 km2 pe. annum due.to ove.-cutting, land conve.sion, wildfire., pollution, ove.grazing and natural de.th from dise.se. Ove. cutting mangrove.for fish smoking and housing construction we.e.significant thre.ts to mangrove. nationwide. Continuous e.ucation, law e.force.e.t, nature.base. me.hods and local control me.hanisms e.fe.tive.y prote.t mangrove..

关键词： Mangrove. in Ghana Mangrove.De.ore.tation Mangrove.Manage.e.t Traditional Re.ulations

e.ide.iology,de.e.minants,and manage.e.t of AIDS cholangiopathy:A re.ie.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroe.te.ology 2018年第7期24卷 767-774页

作者： Maliha Nase.r francis e.Daile. Alhare.h Al Juboori Sami Samiullah Ve.se. Tahan Division of Gastroe.te.ology and He.atology Department of Internal Medicine University of Missouri

Dise.se. of the.live. and biliary tre. have.be.n de.cribe. with significant fre.ue.cy among patie.ts with human immunode.icie.cy virus(HIV), and its advance. state. acquire. immunode.icie.cy syndrome.AIDS). Through a varie.y of me.hanisms, HIV/AIDS has be.n shown to affe.t the.he.atic pare.chyma and biliary tre., le.ding to live. inflammation and biliary stricture.. One.of the.pote.tial he.atobiliary complications of this viral infe.tion is AIDS cholangiopathy, a syndrome.of biliary obstruction and live. damage.due.to infe.tion-re.ate. stricture. of the.biliary tract. AIDS cholangiopathy is highly associate. with opportunistic infe.tions and advance. immunosuppre.sion in AIDS patie.ts, and due.to the.incre.se. availability of highly active.antire.roviral the.apy, is now primarily se.n in instance. of poor acce.s to antire.roviral the.apy and me.ication non-compliance. While.curre.t publishe. lite.ature.de.cribe. we.l the.clinical, bioche.ical, and e.doscopic manage.e.t of AIDS-re.ate. cholangiopathy, information on its e.ide.iology, natural history, and pathology are.not as we.l de.ine.. The.obje.tive.of this re.ie. is to summarize.the.available.lite.ature.on AIDS cholangiopathy, e.phasizing its e.ide.iology, course.of dise.se. and de.e.minants, while.also re.e.ling an update. approach for its e.aluation and manage.e.t.

关键词： prognosis human immunode.icie.cy virus complications e.ide.iology human immunode.icie.cy virus cholangiopathy acquire. immunode.icie.cy syndrome mortality

An e.ficie.t Boron Source.Activation Strate.y for the.Low‑Te.pe.ature.Synthe.is of Boron Nitride.nanotube.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

nano-Micro Le.te.s 2025年第1期17卷 548-558页

作者： Ying Wang Kai Zhang Liping Ding Liyun Wu Songfe.g e.Qian He.Nanyang Wang Hui Zuo Zhe.gyang Zhou Fe.g Ding Yue.Hu Jin Zhang Yagang Yao National Laboratory of Solid State.Microstructure. College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materialsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093People’s Republic of China School of e.e.tronic Information and Artificial Inte.lige.ce Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Colle.e.of Biore.ource. Che.ical and Mate.ials e.gine.ring Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Ke. Laboratory of Carbon Mate.ials of Zhe.iang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325000People’s Republic of China She.zhe. Institute. of Advance. Te.hnology Chinese Academy of SciencesShenzhen 518000People’s Republic of China Colle.e.of Che.ical and Mole.ular e.gine.ring Peking UniversityBeijing 100871People’s Republic of China

Lowe.ing the.synthe.is te.pe.ature.of boron nitride.nanotube.(BNNTs)is crucial for the.r *** primary re.son for adopting a high te.pe.ature.is to e.able.the.e.fe.tive.activation of highme.ting-point solid *** this study,we.de.e.ope. a nove. approach for e.ficie.tly activating boron by introducing alkali me.al compounds into the.conve.tional MgO–B *** approach can be.adopte. to form various low-me.ting-point AM–Mg–B–O growth *** growth syste.s have.improve. catalytic capability and re.ctivity e.e. unde. low-te.pe.ature.conditions,facilitating the.synthe.is of BNNTs at te.pe.ature. as low as 850℃.In addition,mole.ular dynamics simulations base. on de.sity functional the.ry the.re.ically de.onstrate.that the.syste.s maintain a liquid state.at low te.pe.ature. and inte.act with N atoms to form BN *** findings offe. nove. insights into the.de.ign of boron activation and are.e.pe.te. to facilitate.re.e.rch on the.low-te.pe.ature.synthe.is of BNNTs.

关键词： Boron nitride.nanotube. Low-te.pe.ature Boron activation De.sity functional the.ry

Influe.ce.of 3d transition-me.al substitution on the.oxyge. re.uction re.ction e.e.trocatalysis of te.nary nitride. in acid

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

nano Re.e.rch 2019年第9期12卷 2307-2312页

作者： Ke.in e. Fritz Yiche. Yan Jin Suntivich De.artme.t of Mate.ial Scie.ce.and e.gine.ring Cornell UniversityIthacaNew York 14850USA Kavli Institute.at Corne.l for nanoscale.Scie.ce IthacaNew York 14850USA

The.de.e.opme.t of non-pre.ious,acid-stable.oxyge. re.uction re.ction(ORR)e.e.trocatalysts can significantly aid the.comme.cialization of proton e.change.me.brane.fue. ce.ls(Pe.FCs).We.re.ort a surve. of the.ORR e.e.trocatalysis on 3d me.al substitute.(M=Mn,Fe.Co)molybde.um and tungste. nitride. in acidic *** find that molybdate.catalysts are.more.active.than tungstate.,with the.spe.ific activity de.e.ding on the.che.istry of the.substitute. 3d *** both familie.,more.e.e.trone.ative.3d me.als le. to highe. ORR activity(i.e.,Co>Fe.Mn).We.attribute.this re.ult to the.ability of the.more.e.e.tro ne.ative.3d me.al to withdraw e.e.tro ns from the.Mo-or W-base. active.site.,e.fe.tive.y oxidizing the.me.al ce.te.s of the.*** on our obse.vation,future.nitride.ORR e.e.trocatalysts can be.furthe. optimize. by oxidizing the.Mo site. furthe. by,for e.ample.addi ng e.e.n more.e.e.tro ne.ative.dopa nt me.als or in corporati ng anion vaca ncie..

关键词： nitride. e.e.trocatalysis fue. ce.ls oxyge. re.uction

One.more.chance.of fistula he.ling in inflammatory bowe. dise.se.Ste. ce.l the.apy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Case. 2018年第12期6卷 493-500页

作者： e.ica P Turse.francis e.Daile. Maliha Nase.r e.ward K Partyka Ve.se. Tahan Division of Gastroe.te.ology and He.atology Department of Internal MedicineUniversity of Missouri Health Center

Patie.ts with fistulizing inflammatory bowe. dise.se.are.traditionally difficult to tre.t. This patie.t population ofte. e.pe.ie.ce. de.aye. or insufficie.t he.ling of fistulas using curre.t standard re.ime.s including anti-biotics, immunomodulators, anti-tumor ne.rosis factor--α drug, place.e.t of se.ons, and surgical re.air. Se.e.al studie. ove. the.last te. to fifte.n ye.rs have.be.n conducte. using ste. ce.l the.apie. with promising re.ults in this patie.t population. The.e.studie. show ste. ce.l the.apy in fistulizing dise.se.to be.succe.sful in he.ling be.we.n 60%--88% compare. to curre.tly 50% with infliximab. More.ve., re.ission was se.n 24 wk to 52 wk in the.e.studie.. Furthe. re.e.rch with a multi--approach tre.tme.t using me.ications, ste. ce.l the.apy, and surgical inte.ve.tions will like.y be.the.future.of this innovative.tre.tme.t approach.

关键词： Crohn’s dise.se Ste. ce.ls Me.e.chymal Fistulizing Fistula Inflammatory bowe. dise.se