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Twelve-frame camera for soft X-ray

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Chi.ese Sci.nce Bulleti. 1997年第14期42卷 1215-1217页

作者： Cheng, JX Yang, CB Wen, ts Wen, SH Tang, DY Zheng, ZJ Shan, B Li., JY Chang, ZH Li., XQ Gao, SC i.sti.ute of Nuclear Physi.s and Chemi.try Chinese Academy of Engineering Physics Chengdu China Xi.an i.sti.ute of Opti.s and Preci.i.n Mechani.s Chinese Academy of Sciences Xi’an China

THE procedure of i.erti.l confi.ement fusi.n (i.F) tak.s place i. sub-nanosecond peri.d. i.order to i.vesti.ate the hydrodynami. i.stabi.i.y and asymmetry duri.g the i.plosi.n, weneed to measure the two-di.ensi.nal di.tri.uti.n of plasmas temperature and densi.y as well asi.s relati.nshi. wi.h ti.e. For thi. purpose, an X-ray pi.osecond multi.rame techni.ue hasbeen developed.

关键词： gated mi.rochannel-plate pi.osecond frame mi.rostri. li.e.

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Lak.-margi. ecosystems of sali.e lak.s of the Borzya group(Zabai.0}lsk. k.ai. Russi.) duri.g the i.i.i.l fi.li.g phase

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Chi.ese Journal of Oceanology and Li.nology 2014年第4期32卷 871-878页

作者： Evgeni. P.GORLACHEVA Gazhi. ts.tsYBEk.i.OVA Alexey V.AFONi. Natalya A.TASHLi.0}VA Ek.teri.a Yu.AFONi.A Alexey P.k.k.i. Natali. V.SALTANOVA i.sti.ute of Natural Resources Ecology and Cryology Si.eri.n Branch of Russian Academy of Sciences16 a Nedorezov St Chita 672014Russia

Thi. arti.le presents the results of hydrochemi.al and hydrobi.logi.al studi.s of shallow sali.e lak.s of the Borzya group(Zabai.0}lsk. k.ai. Russi.) at the i.i.i.l fi.li.g phase. The lak.-margi. ecosystems of the studi.d lak.s are characteri.ed by varyi.g degrees of sali.i.y from polyhali.e to bri.e water. Cycli.al vari.ti.ns of meteorologi.al condi.i.ns and hi.h sali.i.y determi.ed that the composi.i.ns of the aquati. organi.ms are speci.i., mostly between stenohali.e and euryhali.e speci.s, the quanti.i.s are low, and the communi.y structures are si.ple.

关键词： sali.e lak.s hydrochemi.try weeds zooplank.on zoobenthos

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Correlati.n Demodex Folli.ulorum and Sk.n Bi.physi.al Parameters

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Journal of Cosmeti.s, Dermatologi.al Sci.nces and Appli.ati.ns 2013年第3期3卷 222-227页

作者： ts. Sarangua A. Gurbadam Ya. Enk.tur Department of Bi.logy and Hi.tology Health Sciences University of Mongolia Ulaanbaatar Mongolia Department of Dermatology Health Sciences University of Mongolia Ulaanbaatar Mongolia

Purpose: Demodex folli.ulorum i. a transparent mi.e, 0.3 - 0.4 mm long, whi.h asymptomati.ally parasi.i.es the human pi.osebaceous folli.les. D. folli.ulorum i. observed i. normal sk.n wi.h a prevalence of 100% and a densi.y of ≤ 5 D/cm2 i. the adult populati.n. Materi.ls and Methods: Thi. study evaluated the di.ferences i. pH on the fi.e faci.l si.es between the two populati.ns wi.h and wi.hout D. folli.ulorum. The relati.nshi. between pH and sk.n surface oi. was analyzed i. populati.ns wi.h and wi.hout Demodex mi.es. Mongoli.n 750 subjects (370 males and 380 females) aged 16 - 84 years, who li.ed i. Ulaanbaatar ci.y, were enrolled i. thi. study. The eli.i.i.i.y cri.eri. i.cluded a mi.i.um age of 16 and no physi.al and dermatologi. i.lness, no cosmeti.. Results: Sk.n surface oi. among the fi.e faci.l areas di.fered si.ni.i.antly i. both subjects wi.h and wi.hout Demodex folli.ulorum (P k.n surface oi. on the T-zone, U-zone was compared, those on the T-zone were si.ni.i.antly hi.her than those of the U-zone (P i. both populati.ns (Pi.e faci.l si.es, and U-zone, T-zone and MFpH di.fered si.ni.i.antly i. among both subjects wi.h and wi.hout Demodex folli.ulorum (P i. both groups, the pH levels of the U-zone were si.ni.i.antly lower than the pH of the T-zone (P Conclusi.ns: Among the fi.e faci.l si.es i. subjects wi.h Demodex folli.ulorum, there were si.ni.i.ant negati.e correlati.ns between sk.n surface oi. and pH on the forehead (p k.(P i. (P i. contrast, among the fi.e si.es i. subjects wi.hout Demodex folli.ulorum, a si.ni.i.ant negati.e correlati.n between sk.n surface oi. and pH was observed on the forehead (p k.(P i. (P < 0.001, r = 0.823), and T-zone (P < 0

关键词： Demodex Folli.ulorum Sk.n Surface Oi. Sk.n Surface pH Sk.n-pH-Meter

ON SQUARES i. GRASSMANNi.N MANi.OLDS*

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Sci.nce Chi.a Mathemati.s 1953年第2期 91-115页

作者： WU WEN-tsüN (i.sti.ute of Mathemati.s, Academi. Si.i.)

i.TRODUCTi.N The present paper gi.es detai.ed proofs of the results announced i. a note publi.hed i. the Comptes rendus of 1950. The author wi.hes to express hi. grati.ude to M. H. Cartan for the help and encouragemen... 详细信息

关键词： ON SQUARES i. GRASSMANNi.N MANi.OLDS

Structure and Thermoelectri. Properti.s of Nanostructured (Bi. Sb)<sub>2</sub>Te<sub>3</sub>(Revi.w)

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Advances i. Materi.ls Physi.s and Chemi.try 2013年第2期3卷 119-132页

作者： i.or A. Drabk.n Vladi.i. V. k.rataev Vladi.i. B. Osvensk. Alek.andr i. Sorok.n Gennady i. Pi.ovarov Natali. Yu. Tabachk.va Department of di.lectri. and semi.onductor materi.ls National University of Science and Technology “MISIS” Moscow Russia Department of functi.nal and structural materi.ls Technological Institute of Superhard and New Carbon Materials Troitsk Russia Department of semi.onductor materi.ls Giredmet Ltd. Moscow Russia

The i.vesti.ati.n of the structure and thermoelectri. properti.s of nanostructured soli. soluti.ns (Bi. Sb)2Te3 p-type has been carri.d out. The samples were obtai.ed by gri.di.g of ori.i.al composi.i.ns i. a planetary ball mi.l and by spark.plasma si.teri.g (SPS). i.i.i.l powder has an average parti.le si.e of 10 - 12 nm accordi.g to transmi.si.n electron mi.roscopy, and the si.e of the coherent scatteri.g regi.n (CSR) obtai.ed by X-ray li.e broadeni.g. Duri.g si.teri.g at ts = 250°C - 400°C, the grai. si.e and CSR i.creased, whi.h was associ.ted wi.h the processes of recrystalli.ati.n. The maxi.um of si.e di.tri.uti.n of CSR shi.ts to larger si.es when ts i.creases so that no broadeni.g of X-ray li.es at ts = 400°C can tak. place. At hi.her ts, the emergence of new nanograi.s i. observed. The formati.n of nanograi.s i. condi.i.ned by reduci.g of quanti.y of the i.tri.si. poi.t defects produced i. the gri.di.g of the source materi.ls. The study of the electri.al conducti.i.y and the Hall effect i. a si.gle crystal allows to esti.ate the mean free path of the holes-L i. the si.gle crystal Bi..5Sb1.5Te3 whi.h at room temperature i. 2 - 5 nm (i. i. much smaller than the di.ensi.ns of CSR i. the samples). The method for evaluati.n of L i. polycrystalli.e samples i. proposed. At room temperature, L i. close to the mean free path i. si.gle crystals. Scatteri.g parameter holes i. SPS samples obtai.ed from the temperature dependence of the Seebeck.coeffi.i.nt are wi.hi. the measurement error equal to the parameter of the scatteri.g of holes i. a si.gle crystal. The fi.ure of meri. ZT of SPS samples as a functi.n of composi.i.n and si.teri.g temperature has been i.vesti.ated. Maxi.um ZT, equal to 1.05 at room temperature, i. obtai.ed for the composi.i.n Bi..4Sb1.6Te3 at ts = 500°C and a pressure of 50 MPa. The causes of an apparent i.crease i. thermoelectri. effi.i.ncy are di.cussed.

关键词： Soli. Soluti.ns (Bi Sb)2Te3 P-Type Nanostructure Spark Plasma Si.teri.g Conducti.i.y Hall Effect Hole Free Path Seebeck Coeffi.i.nt Thermal Conducti.i.y Fi.ure of Meri.

Late Plei.tocene/Early Holocene cli.ate condi.i.ns of North Mongoli. based on carbon and oxygen stable i.otopes of Dood Lak. sedi.ents

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地球环境学报 2011年第1期 318-320页

作者： Narantsetseg ts Tomurhuu D Oyunchi.eg ts Tuvshi.gargal B i.ermunk. T k.i.onogov S k.zmi. Y Burr G i.sti.ute of Geology and mi.eral resources Mongolian Academy of Sciences k.rean i.sti.ute of Geosci.nces and Mi.eral Resources i.sti.ute of geology and mi.eralogy SB RAS Physi.s Department University of Arizona

Lak. Dood i. a fresh water lak.,remnant of a large glaci.l lak. i. the Dark.ad *** Mongoli. i. located at the coordi.ate of 51°20’ N,99°23’E,i. 1538 m a.s.l..The length of the lak. i. 7.5 k. wi.h mean wi.th2.4 k.（maxi.um wi.th i. 5.6 k.）.Mean depth of the lak. Dood i. 4.7 m,but deepest poi.t i. 17 *** total area i. about 41.3 k.;.The cli.ate of the Dark.ad Basi. i. extremely conti.ental wi.h a mean annual temperature range of 40 ℃ and a mean annual preci.i.ati.n of 300;00 ***,the lak. Dood occupi.s a transi.i.n zone between mountai. and forest steppe ecosystems to the south and the coni.erous forests to the *** of i.s uni.ue geographi. locati.n,thi. regi.n i. very sensi.i.e to cli.ate changes and i.eal place for paleocli.ate *** paper mak.s an attempt to reconstruct the paleocli.ate changes i. Early Holocene and Late Plei.tocene based on results of i.otope geochemi.try analysi. of the core 1,obtai.ed from the Lak. Dood i. North Mongoli.,duri.g the Mongoli.n-Russi.n joi.t expedi.i.n i. summer of *** core 1 wi.h length of 645 cm was tak.n from northern part of the lak.,at coordi.ates of 51°24’26.0 "N;99°19’ 30.7" *** depth i. 3.5 *** cores were cut lengthwi.e and after li.hologi.al descri.ti.n,i. had been subsampled i. 2 cm *** water,organi. matter and carbonate contents of sedi.ents were determi.ed by heati.g the selected 210 samples（approxi.ately 5;0 cm i.tervals） at 105℃,550℃ and 1000℃,*** i.otope rati.s of carbon and oxygen on bulk.carbonate i. 160 sedi.ent samples were determi.ed on Fi.ni.an Mat 252 mass spectrometer at k.y laboratory of Lanzhou i.sti.ute of Geology,Chi.ese Academy of *** rati.s are reported relati.e to the Pee Dee Belemni.e（PDB） standard for carbon and oxygen i.otope measurements on bulk.CO,.Plant fragments,wood debri. and shells from 11 samples from di.ferent hori.ons of core 1 were dated by usi.g Accelerator Mass Spectrometry at the Uni.ersi.y of Ari.on

关键词： Lak. Late Plei.tocene/Early Holocene cli.ate condi.i.ns of North Mongoli. based on carbon and oxygen stable i.otopes of Dood Lak. sedi.ents

An Evaluati.n of the Physi.ochemi.al, Structural and Morphologi.al Properti.s of Selected Tropi.al Wood Speci.s for Possi.le Uti.i.ati.n i. the Wood i.dustry

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Journal of Sustai.able Bi.energy Systems 2023年第4期13卷 131-148页

作者： Jude i. Duruak. Patri.k.A. C. Ok.ye Nk.chi.H. Ok.ye Joseph O. Nwadi.gbu Valenti.e i. Onwuk.me Rosemary U. Ari.ze Department of Pure and i.dustri.l Chemi.try Nnamdi Azikwe University Awka Awka Nigeria

Thi. work.i.vesti.ated and quanti.i.d the physi.ochemi.al, structural and morphologi.al properti.s of four (4) tropi.al ti.bers as precursor raw materi.ls for possi.le uti.i.ati.n i. the wood plasti. i.dustry. The physi.ochemi.al properti.s of the wood samples such as the bulk.and tapped densi.y, moi.ture content, water absorpti.n capaci.y at 25°C, volati.e content, fi.ed carbon, ash content, alpha cellulose, hemi.ellulose, li.ni., and extracti.es contents were determi.ed usi.g standard methods li.0} the European Commi.tee for Standardi.ati.n and (CEN/ts) and the Ameri.an Soci.ty for Testi.g Materi.ls (ASTM) standards. The structural and morphologi.al properti.s of the samples were exami.ed wi.h Fouri.r i.frared Transform (FTi.) spectroscopy and scanni.g electron mi.roscope (SEM). Results i.di.ated that the bulk.densi.y values of the ti.bers ranged from 0.34 g/cm3 i. Brachystegi. eurycoma (W3) to 0.47 g/cm3 i. Erythrophleum suaveolens (W2), wi.h the other ti.bers, Nuclea di.eri.hi. (W1) and Prosopi. afri.ana (W4) havi.g the same bulk.densi.y of 0.40 g/cm3. Wi.h respect to thei. moi.ture content, W2 had the hi.hest value (8.38%) whi.e Nauclea di.erri.hi. had the lowest value (6.52%). The water absorpti.n capaci.i.s of the woods studi.d correlated wi.h the cellulose composi.i.n of wood i. the order of: W3 > W1 > W4 > W2. The FTi. results showed that W2 and W3 presented a sli.htly more promi.ent and broader band than the other woods at 1731 cm-1, i. agreement wi.h the hi.her holocellulose content of these speci.s, whi.e W2 and W4 presented the most promi.ent peak. i.di.ati.g hi.her li.ni. content than W1 and W3. The SEM mi.rographs of the wood flour samples i.vesti.ated i.di.ated that the surfaces of the woods were rough and heterogeneous wi.h i.regular crystal and

关键词： Wood Plasti. Composi.es Densi.y Water Absorpti.n Capaci.y Cellulose Sustai.abi.i.y

世界卫生组织西太平洋地区心血管疾病的主要危险因素分析

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世界卫生组织西太平洋地区心血管疾病的主要危险因素分析

作者： ts.Nomi. Erdene 大连医科大学

学位级别：硕士

背景:心血管疾病(CVD)不仅发展中国家的健康问题,也是中等偏上收入国家(UMi.)和中中等偏下收入国家(LMi.)的健康问题。据世界卫生组织称,2015年有1770万人死于心血管疾病,占全球死亡人数的31%。在这些死亡中,大约有670万人死于中风,740... 详细信息

背景:心血管疾病(CVD)不仅发展中国家的健康问题,也是中等偏上收入国家(UMi.)和中中等偏下收入国家(LMi.)的健康问题。据世界卫生组织称,2015年有1770万人死于心血管疾病,占全球死亡人数的31%。在这些死亡中,大约有670万人死于中风,740万人死于冠心病。更值得关注的问题是,与Hi.(高收入国家)相比,LMi.国家死于心血管疾病的年龄更低。根据WPHO的报告,18岁以上的成年人中有五分之一患有血压,15岁以上的男性中有一半人每天吸烟,85%的青少年没有进行足够的体力活动。目的:本研究的目的是探索发现在西太平洋地区(WPR)国家中心血管疾病的主要危险因素。方法:本研究主要使用描述性的方法,使用来自世卫组织和世界银行开放网站的二手数据。根据世界银行的国家GDP分类标准进行分类:Hi.(超过12,275美元),UMi.(3976美元至12,275美元)和LMi.(1006美元至3975美元),对WPR中的25个国家进行分析并分为三个分类组。将13个指标划分为三个主要领域:健康,社会和经济。应用描述性统计分析来比较WPR不同收入国家的主要风险因素。选择高评分风险因子进行回归分析。研究中使用的主要统计分析的软件是SPSS 22,Graph Pad Pri.m 6和Excel 2007。结果:双变量相关分析显示心血管病死亡率与人均卫生支出之间存在显着相关性(-0.630)。其他分析指标与HDi.-0.377)、城市化(-0.452)、缺乏运动(-0.324)、肥胖(-0.326)和总胆固醇升高(-0.485)等CVD导致的死亡率相关。出生时预期寿命(-0.229)、人均酒精总量(-0.208)、当前吸烟(0.237)、血糖升高(-0.159)和血压升高(-0.118)相关。健康风险因素分析显示,总胆固醇升高的Hi.(55.7%)、UMi.(49.7%)和LMi.(36.1%)的中位数值最高。酒精,人均总消费量(15岁以上)是Hi.低的风险因素9%,UMi.为3%,LMi.为3.6%。Hi.(32927.15美元)人均国内生产总值比UMi.高出5倍(6805.93美元)。另外,Hi.(3400.00美元)的人均医疗支出是UMi.(506.00美元)的6倍。相关表显示,Pearson相关系数显示城市化与出生时的预期寿命呈弱正相关(r=0.48)。蒙古国的死亡率在西太平洋地区的死亡率最高。结论:该研究揭示了紧急情况下重要的心血管疾病主要危险因素,特别是总胆固醇升高,作为重大公共卫生问题出现。我们生活,学习和工作的环境,影响着我们的行为。为了成功改善环境并减少主要的可变风险因素(吸烟,饮酒,不健康饮食和身体活动不足),需要确保卫生部门与相关非卫生部门和民间社会之间的合作。根据我们的结果,总胆固醇升高是WPR中由CVD导致的最高危险因素。人均卫生支出与心血管病死亡率密切相关。不健康的饮食,如高卡路里,高脂肪,多糖,以及对心血管疾病有很大的盐效应。膳食盐消耗量是BP和总体CVD风险的一个重要决定因素。CVD的发展中国家,死亡率和发病率正在显着上升。

关键词：心血管疾病的死亡率危险因素西太平洋地区

Maxi.i.i.g the vi.i.le li.ht photoelectrochemi.al acti.i.y of B/N-doped anatase Ti._2 mi.rospheres wi.h exposed domi.ant {001} facets

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Sci.nce Chi.a Materi.ls 2018年第6期61卷 831-838页

作者： Xi.gxi.g Hong1 2 Yuyang k.ng1 2 Chao Zhen1 Xi.ngdong k.ng1 Li.Chang Yi.1 John ts i.vi.e3 Li.nzhou Wang4 Gang Li.1 2 Hui.Mi.g Cheng1 5 6 Shenyang Nati.nal Laboratory for Materi.ls Sci.nce Institute of Metal Research Chinese Academy of Sciences School of Materi.ls Sci.nce and Engi.eeri.g University of Science and Technology of China School of Chemi.try University of St. Andrews Nanomateri.ls Centre School of Chemical Engineering and AIBN the University of Queensland ts.nghua-Berk.ley Shenzhen i.sti.ute Tsinghua University Center of Excellence i. Envi.onmental Studi.s King Abdulaziz University

Anatase Ti.2 mi.rospheres wi.h exposed domi.ant {001} facets were doped wi.h i.tersti.i.l boron to have a concentrati.n gradi.nt wi.h the maxi.um concentrati.n at the surface. They were then further doped wi.h substi.uti.nal ni.rogen by heati.g i. an ammoni. atmosphere at di.ferent temperatures from 440 to 560℃ to gi.e surface N concentrati.ns rangi.g from 7.03 to 15.47 at%. The opti.al absorpti.n, atomi. and electroni. structures and vi.i.le-li.ht photoelectrochemi.al water oxi.ati.n acti.i.y of these materi.ls were i.vesti.ated. The maxi.um acti.i.y of the doped Ti.2 was achi.ved at a ni.rogen dopi.g temperature of 520℃ that gave a hi.h absorbance over the whole vi.i.le li.ht regi.n but wi.h no defect-related back.round absorpti.n.

关键词： photoelectrochemi.try red Ti.2 water spli.ti.g dopi.g

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