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t.e Ef.ect. of.Sugars and Et.ylene on Apospory and Regenerat.on in &lt.i&gt.Cerat.pt.ris richardii&lt./i&gt.

American Journal of.Plant.Sciences 2012年第7期3卷 953-961页

作者： Linh t. Bui Amelia Hurst.Erin E. Irish Chi-Lien Cheng Depart.ent.of.Biology The University of Iowa Iowa City Iowa 52242.

In land plant., t.o dist.nct.generat.ons, gamet.phyt. and sporophyt., alt.rnat. t. complet. t.e lif. cycle. Sporophyt.s undergo meiosis t. produce spores, f.om which gamet.phyt.s develop. Gamet.phyt.s produce gamet.s, which part.cipat. in f.rt.lizat.on t. produce t.e zygot., t.e f.rst.cell of.t.e sporophyt. generat.on. In addit.on t. t.is sexual reproduct.on pat.way, some f.rn species can undergo apospory or apogamy, processes t.at.bypass meiosis or f.rt.lizat.on, respect.vely, t. alt.rnat. bet.een t.e t.o generat.ons wit.out.changing t.e chromosome number. Apospory is inducible in t.e laborat.ry in various f.rn species simply by alt.ring t.e sugar level in t.e media. In sporophyt.s induced t. undergo apospory, sporophyt. regenerat.on is also observed. t.e rat.o of.aposporous gamet.phyt.s t. regenerat.d sporophyt.s varies, in a manner consist.nt.wit. being dependent.on sugar level. Whereas t.e sugar signaling pat.way is yet.t. be elucidat.d in lower plant., in angiosperms it.has been shown t. play a regulat.ry role in cont.olling essent.al processes including f.owering and embryo development. which give rise t. t.e gamet.phyt. and t.e next.sporophyt. generat.on, respect.vely. Here, we present.evidence f.r t.e role of.dif.erent.sugar levels on t.e balance of.apospory and regenerat.on in t.e f.rn Cerat.pt.ris richardii. t.e demonst.at.on of.crosst.lk.bet.een sugar signaling and t.e hormone et.ylene signaling in angiosperms prompt.d us t. t.st.t.e ef.ect. of.t.is hormone in combinat.on wit. sugar on apospory vs. regenerat.on. t.ese result. provide insight.int. how a group of.redif.erent.at.ng cells det.rmines which generat.on t. become and lay t.e groundwork.f.r f.rt.er analysis of.t.is asexual pat.way.

关键词： Cerat.pt.ris f.rn Apospory Regenerat.on Sugar Et.ylene Gamet.phyt. Sporophyt.

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f.nit. element.modeling of.t.e viscoelast.c responses of.t.e eye during microvolumet.ic changes

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Journal of.Biomedical Science and Engineering 2013年第12期6卷 29-37页

作者： Benjamin Cruz Perez Hugh J. Morris Richard t. Hart.Jun Liu Depart.ent.of.Biomedical Engineering The Ohio State University Columbus USA Depart.ent.of.Biomedical Engineering The Ohio State University Columbus USA Department of Ophthalmology The Ohio State University Columbus USA

A linear viscoelast.c f.nit. element.model was built.t. invest.gat. f.ct.rs t.at.inf.uenced t.e int.aocular pressure (IOP) elevat.ons due t. micro-volumet.ic changes in t.e eye at.t.ree dif.erent.rat.s. t.e viscoelast.c propert.es of.t.e cornea and t.e sclera, including t.e inst.nt.neous modulus, equilibrium modulus, and relaxat.on t.me const.nt., paramet.ically varied t. examine t.eir ef.ect. on IOP elevat.ons at.dif.erent.rat.s of.volumet.ic changes. t.e simulat.d responses were in good agreement.wit. t.e previously report.d experiment.l result. obt.ined f.om porcine globes, showing t.e general t.end of.higher IOP elevat.ons at.f.st.r rat.s. t.e simulat.ons showed t.at.all viscoelast.c propert.es inf.uenced t.e prof.le of.t.e dynamic IOP due t. volumet.ic changes, and t.e relat.ve signif.cance of.a specif.c paramet.r was highly dependent.on t.e rat. of.change.

关键词： Viscoelast.cit. f.nit. Element Modeling Int.aocular Pressure Cornea Sclera

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Ident.f.ing t.e St.eam Erosion Pot.nt.al of.Cave Levels in Cart.r Cave St.t. Resort.Park. k.nt.ck., USA

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Journal of.Geographic Inf.rmat.on Syst.m 2011年第4期3卷 323-333页

作者： B. S. Jacoby E. W. Pet.rson t. Dogwiler 不详

Cave levels, passages f.und at.similar elevat.ons and f.rmed during t.e same const.nt.st.eam base level event. reveal inf.rmat.on about.paleoclimat.s and k.rst.geomorphology. t.e invest.gat.on present.d here examines how St.eam Power Index (SPI) relat.s t. cave levels. t.e st.dy area, Cart.r Caves St.t. Resort.Park.(CCSRP), is a f.uviok.rst.syst.m in nort.east.rn k.nt.ck. cont.ining mult.ple cave levels. SPI det.rmines t.e erosive power overland f.ow based on t.e assumpt.on t.at.f.ow accumulat.on and slope are proport.onal t. pot.nt.al f.r sediment.ent.ainment. Part.of.t.is digit.l t.rrain analysis requires t.e creat.on of.a f.ow accumulat.on rast.r f.om a digit.l elevat.on model (DEM). In creat.ng t.e f.ow accumulat.on rast.r, one has t.e opt.on t. f.ll depressions (also considered errors) wit.in t.e DEM. f.lling t.ese depressions, or “sink.,” creat.s a well-connect.d st.eam net.ork.however it.also removes possible sink.oles f.om t.e DEM. t.is paper also invest.gat.s t.e ef.ect. a f.lled and an unf.lled DEM have on SPI and what.each reveals about.erosion pot.nt.al in t.e area. t.e dat. shows t.at.low elevat.ons wit.in t.e f.lled DEM maint.in a high SPI value when compared t. t.e unf.lled DEM. t.e f.lled DEM also creat.d a st.eam net.ork.similar t. realit.. t.e unf.lled DEM demonst.at.d similar SPI result. bet.een all levels, indicat.ng a well-connect.d k.rst.syst.m. In order t. t.uly underst.nd t.e mechanics of.t.is syst.m, a combinat.on of.t.ese t.o DEMs is required.

关键词： k.rst Erosion Geomorphology Speleogenesis t.rrain Analysis

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Cryst.l st.uct.re and inf.ared spect.um of.t.allium holmium polyphosphat., t.Ho(PO_3)_4

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Journal of.Rare Eart.s 2008年第6期26卷 765-769页

作者： k.rima Horchani-Naif.r Jaouher Amami Mok.t.r f.rid Unit. de Recherches de Mat.riaux de t.rres Rares Centre National de Recherches en Sciences des Matériaux

Cryst.ls of.t.allium-holmium polyphosphat. t.Ho（PO3）4 were grown by f.ux met.od t.chnique and charact.rized by single cryst.l X-ray dif.ract.on. St.uct.re of.t.Ho（PO3）4 was solved f.r t.e f.rst.t.me, and it.cryst.llized in t.e monoclinic P21/n space group wit. t.e f.llowing unit.cell dimensions： a=1.02225（3） nm, b=0.88536（2） nm, c=1.09541（4） nm, β=105.888（1）°, V=0.95354（5） nm^3 and Z=4. t.e cryst.l st.uct.re was solved f.om 2174 independent.ref.ect.ons wit. f.nal R1（f.2）=0.0442 and Rw（f.2）=0.0861 ref.ned wit. 164 paramet.rs. t.e at.mic arrangement.could be described as a long chain polyphosphat. organizat.on. Holmium at.ms had eight.0}ld coordinat.on. t.e st.uct.re of.t.Ho（PO3）4 consist.d of.HoO8 polyhedra sharing oxygen at.ms wit. phosphoric group PO4. Inf.ared spect.um was invest.gat.d at.room t.mperat.re in t.e f.equencies range, 350--4000 cm^-1, showing some charact.rist.c vibrat.on bands of.inf.nit. chain st.uct.re of.PO4 t.t.ahedra link.d by bridging oxygen.

关键词： polyphosphat. holmium cryst.l st.uct.re inf.ared spect.oscopy rare eart.s

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Molecular Ident.f.cat.on of.&lt.i&gt.Campylobact.r&lt./i&gt.Species f.om Posit.ve Cult.ral St.ol Samples of.Diarrhoeic Children in Osun St.t.

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Open Journal of.Medical Microbiology 2019年第1期9卷 8-15页

作者： O. C. Adek.nle A. A. Onilude t. O. Sanusi Depart.ent.of.Medical Microbiology and Parasit.logy Ladoke Akintola University of Technology Osogbo Nigeria Depart.ent.of.Microbiology University of Ibadan Ibadan Nigeria Depart.ent.of.Communit. Medicine Ladoke Akintola University of Technology Osogbo Nigeria

Deat. of.inf.nt. f.om diarrhoea is a common occurrence in sub-Saharan Af.ica. t.is is at.ribut.d t. unhygienic pract.ces which aid t.e prolif.rat.on of.diarrhoea-causing microorganisms. Among t.ese microorganisms, Cam- pylobact.r species have been report.d as one of.t.e causal agent., Campylobact.r spp. are human int.st.nal pat.ogens of.global import.nce and t.eir pat.ogenicit. mechanisms are not.well underst.od. t.is st.dy was designed t. invest.gat. t.e molecular charact.risat.on of.Campylobact.r got.en f.om cult.ral met.ods in Osun St.t.. Campylobact.rs isolat.d were biochemically charact.rized and biot.ped. Conf.rmat.on of.Campylobact.r was done using f.aA gene, hippuricase O f.r Campylobact.r jejuni and aspart.k.nase gene f.r Campylobact.r coli and single locus sequencing glnA gene were perf.rmed by PCR. t.ent. f.ve samples were amplif.ed by PCR out.of.57 Campylobact.r st.ains t.at.were posit.ve f.r cult.ral met.ods f.om 815 st.ol samples wit. diarrhoea and 100 st.ol samples wit.out.diarrhoea. No Campylobact.r was isolat.d f.om st.ols of.children in t.e cont.ol group. t.ent.-f.ve isolat.s comprising of.18 Campylobat.r jejuni and 7 C. coli were ident.f.ed. t.e nucleot.de sequence of.t.e gln A f.r all t.e isolat.d Campylobact.r spp. showed 91.0% similarit. wit. t.e ones in t.e GenBank. t.e C. jejuni was classif.ed int. biot.pes I (44.4%) and II (55.6%) and all C. coli were of.biot.pe I.

关键词： Campylobact.rs Genes Cult.re Polymerase Chain React.on (PCR) Ident.f.cat.on

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论存在者与本质

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外国哲学 2007年第3期 53-76页

作者： t.阿奎那

本文首先从逻辑学与本体论的区分入手，强调了本质概念和存在概念的本体论或实存论性质，提出了一条区别于传统思辨哲学的从经验的存在者到先验的存在者的致思路线；尔后依次从质料与形式、本质与存在、主体与偶性三个层面阐述了阿奎那... 详细信息

本文首先从逻辑学与本体论的区分入手，强调了本质概念和存在概念的本体论或实存论性质，提出了一条区别于传统思辨哲学的从经验的存在者到先验的存在者的致思路线；尔后依次从质料与形式、本质与存在、主体与偶性三个层面阐述了阿奎那的本质特殊学说和实体（单纯实体和复合实体）学说；最后则强调了作为“第一存在”的“绝对单纯性”的上帝的本体论地位和形而上学意义。

关键词：存在本质存在者第一存在

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谁来照看老人

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人口与发展 1998年第1期 62-63+23页

作者：Ｍ．Ｇ．科瓦尔,Ｔ．哈里斯

谁来照看老人［美］Ｍ．Ｇ．科瓦尔Ｔ．哈里斯︽美国工商人口︾摘译为行动不便的老人提供长期照顾，是卫生保健业颇感棘手的问题之一。老年人的卫生保健支出在增加，而其中增长最快的是养老院照顾这一项。预测表明，养老院支出以年均１... 详细信息

谁来照看老人［美］Ｍ．Ｇ．科瓦尔Ｔ．哈里斯︽美国工商人口︾摘译为行动不便的老人提供长期照顾，是卫生保健业颇感棘手的问题之一。老年人的卫生保健支出在增加，而其中增长最快的是养老院照顾这一项。预测表明，养老院支出以年均１２％的速度在递增，但另一方面，老年...

关键词：老人科瓦尔哈里斯美国美利坚合众国北美洲养老院敬老院养老机构照顾服务老年人

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恶性萎缩性丘疹(Degos病)的视神经和脊髓表现

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世界核心医学期刊文摘（神经病学分册） 2006年第6期2卷 36-36页

作者： Mat.uura f. Mak.no k. f.k.shima t. 陈孝东 Depart.ent.of.Neurology Niigata City General Hospital 2-6-1 Shichikuyama Niigata 950-8739 Japan Dr.

A f.t.l case of.malignant.at.ophic papulosis (Degos disease)wit. opt.c nerve and spinal cord involvement.is described. Magnet.c resonance imaging (MRI) of.t.e opt.c nerve showed abnormal signal enhancement.on f.t.suppressed t. weight.d images af.er int.avenous meglumine gadopent.t.t. inf.sion. On t. weight.d sagit.al images, a sawt.ot. pat.ern was observed over seven vert.bral segment. of.t.e spinal cord. On necropsy, a severe loss of.myelinat.d nerve f.bres in t.e lef. opt.c nerve was seen, wit. t.rombot.c obst.uct.on of.t.e cent.al ret.nal art.ry. Spongy degenerat.on was observed in all levels of.t.e spinal cord, wit. pat.hy and mot.eat.n pat.erns caused by t.romboses and endot.elial prolif.rat.on in subarachnoid vessels. f.ndings on MRI were consist.nt.wit. f.ndings on pat.ological ex aminat.on.

关键词：恶性萎缩性丘疹 Degos病视神经脊髓 t.加权成像 t.加权成像髓鞘神经纤维动脉血栓栓塞血管内皮增殖检查结果

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Does acid pick.ing of.Mg-Ca alloy enhance biomineralizat.on?

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Journal of.Magnesium and Alloys 2021年第3期9卷 1028-1038页

作者： Shebeer A Rahim VP Muhammad Rabeeh M A Joseph t.Hanas Depart.ent.of.Mechanical Engineering National Institute of Technology CalicutKerala 673601India Nanomat.rials Research Laborat.ry School of Materials Science and EngineeringNational Institute of Technology CalicutKerala 673601India

t.e mechanical and physical propert.es of.biodegradable magnesium(Mg)alloys mak. t.em suit.ble f.r t.mporary ort.opaedic *** success of.t.ese alloys depends on t.eir perf.rmance in t.e physiological *** t.e present.work.surf.ce modif.cat.on of.Mg-Ca binary alloy by acid pick.ing f.r bet.er biomineralizat.on and cont.olled biodegradat.on is *** corrosion rat.s of.nit.ic and phosphoric acid t.eat.d samples were analysed by conduct.ng elect.ochemical corrosion *** vit.o degradat.on behaviour was st.died using immersion t.st.in simulat.d body f.uid(SBf..t.e sample surf.ces were charact.rized using scanning elect.on microscope(SEM),energy dispersive X-ray spect.oscopy(EDS),f.urier t.ansf.rm inf.ared spect.oscopy(f.IR)and X-ray phot.elect.on spect.oscopy(XPS).It.is seen t.at.acid pick.ing leads t. signif.cant.improvement.in biomineralizat.on and develop in sit. calcium phosphat.(Ca P)coat.ng on t.e sample *** addit.on,t.e t.eat.d samples recorded a reduced degradat.on rat. in t.e SBf.compared t. unt.eat.d ***,acid pick.ing is suggest.d as an ef.ect.ve surf.ce t.eat.ent.met.od t. t.ilor t.e biomineralizat.on and degradat.on behaviour of.t.e Mg-Ca alloy in t.e physiological environment.

关键词： Inorganic acid pick.ing Magnesium alloy Surf.ce pret.eat.ent Surf.ce charact.rizat.on Biomineralizat.on Degradat.on rat.

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γ-Irradiat.on Ef.ect.Variat.on of.Phot.synt.et.c Act.vit. of.Euglena

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Biomedical and Environment.l Sciences 2002年第3期15卷 261-267页

作者： t.SAk.SHIt. M·DOI 等 Nat.onalInst.t.t.of.adinologicalSciences

Object.ve t. st.dy t.e ef.ect. of.gamma-ray irradiat.on on carbon f.xat.on (Specif.c product.on rat.: SPR), CO2 ut.lizat.on ef.iciency (CUE) and elect.on t.ansf.r rat. (Et.) in t.e phot.synt.et.c f.agellat. Euglena gracilis st.ain Z in a dose-response dependent.manner. Met.ods Euglena cells were cult.red in an inorganic nut.ient.medium cont.ining ammonium chloride or prot.ose pept.ne. Cells were exposed t. gamma-ray at.5 doses (0, 100, 250, 350, 500 Gy f.r wat.r). f.ve days af.er irradiat.on, t.ree phot.synt.et.c act.vit.es were measured. SPR, which is a carbon upt.k. rat. per unit.carbon mass, was det.rmined by 13C t.acer met.odology. CUE was evaluat.d using a relat.on of.carbon isot.pe f.act.onat.on in Calvin cycle. Et. in phot.syst.m II (PS II) was measured by a chlorophyll f.uorescence analysis. Result. Even at.a dose of.500 Gy, 80 % of.Et. of.t.e non-irradiat.d cont.ol (0 Gy) was sust.ined, while SPR and CUE were about.half.t.e level in t.e non-irradiat.d cont.ol at.500 Gy. f.rt.ermore, t.e dose response of.Et. was considerably dif.erent.f.om t.e ot.ers. Conclusion Our f.ndings suggest.t.at.not.only PS II but.also t.e Calvin cycle in t.e phot.synt.et.c syst.m is af.ect.d by gamma ray irradiat.on.

关键词： Gamma-ray irradiat.on Euglena gracilis Phot.synt.et.c act.vit.es

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