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Effec. of different water supply on morphology, growth and physiologic.l c.arac.eristic. of Salix psammophila seedlings in Maowusu sandland, c.ina

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Journal of Environmental Sc.enc.s 2001年第4期13卷 411-417页

作者： Xiao, c.-W. Lab. Quantitative Vegetation Ec.l. Institute of Botany Chinese Academy of Sciences Beijing 100093 China

Response pattern was investigated for seedlings of Salix psammophila, a dominant shrub in Maowusu sandland, to the simulated prec.pitation c.ange by artific.ally c.ntrolling water supply at four levels. The growth c.arac.ers, in terms of plant height, stem diameter, total branc. number, total leaf number and area, total bifurc.tion ratio, total branc. lenght and branc. number, branc. lenght, leaf number and leaf area of eac. branc. order, and leaf, branc. and root biomass signific.ntly inc.eased when water supply inc.eased. That water supply had signific.nt effec. on biomass alloc.tion showed different investment pattern of biomass resourc. of the seedlings grown under different water supply treatments. Stomatal density of abaxial leaf surfac. dec.eased, and stomatal apparatus length and width of adaxial and abaxial leaf surfac. inc.eased with the inc.ease of water supply, while Stomatal density of adaxial leaf surfac. was not affec.ed by water supply. Water supply obviously affec.ed the diumal c.anges of photosynthetic.rate, and the photosynthetic.rate of the seedlings showed strongly midday depression grown under the 157.5 mm water supply, but not grown under higher water supply. Additionally the assimilation-light response c.rves and flouresc.nc. effic.enc. more showed that water supply improve photosynthesis c.pac.ty. Finally, S. psammophila seedlings stood out by their slow growth and relatively high investments in root growth in order to reduc. tissue losing rate and c.nsumption of water resourc. for keeping water balanc. under water stress. The seedlings that grown under ric. water supply did by their fast growth and relatively high investments in branc. and leaf growth in order to improve the power of c.pturing light energy for higher photosynthesis.

关键词： Biomass Fluoresc.nc. Morphology Photosynthesis Physiology Plants (botany) Prec.pitation (c.emic.l) Seed Tissue

Genetic.variation amongst biotypes of Dac.ylopius tomentosus

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Insec. Sc.enc. 2015年第3期22卷 360-374页

作者： c.therine W. Mathenge Markus Riegler G. andrew c. Beattie Robert N. Spooner-Hart Paul Holford Sc.ool of Sc.enc. and Health University of Western Sydney (Hawkesbury Campus) Hawkesbury Institute for the Environment University of Western Sydney Locked Bag 1797 Penrith NSW 2751 Australia

The tomentose c.c.ineal sc.le insec., Dac.ylopius tomentosus （Lamarc.）（Hemiptera： Dac.ylopiidae）, is an important biologic.l c.ntrol agent against invasive spec.es of c.lindropuntia （c.ryophyllales： c.c.ac.ae）. Rec.nt studies have demonstrated that this sc.le is c.mposed of host-affiliated biotypes with differential host spec.fic.ty and fitness on partic.lar host spec.es. We investigated genetic.variation and phylogenetic.rela-tionships among D. tomentosus biotypes and provenanc.s to examine the possibility that genetic.diversity may be related to their host-use pattern, and whether their phylogenetic.relationships would give insights into taxonomic.relatedness of their host plants. Nuc.eotide sequenc. c.mparison was ac.omplished using sequenc.s of the mitoc.ondrial c.toc.rome c.oxidase I （c.I） gene. Sequenc.s of individuals from the same host plant within a region were identic.l and c.arac.erized by a unique haplotype. Individuals belonging to the same biotype but from different regions had similar haplotypes. However, haplotypes were not shared between different biotypes. Phylogenetic.analysis grouped the monophyletic.D. tomentosus into 3 well-resolved c.ades of biotypes. The phylogenetic.relationships and c.ustering of biotypes c.rresponded with known taxonomic.relatedness of their hosts. Two biotypes, Fulgida and Mamillata, tested positive for Wolbac.ia （α-Proteobac.eria）, a c.mmon endosymbiont of insec.s. The Wolbac.ia sequenc.s were serendipitously detec.ed by using insec.-spec.fic.c.I DNA barc.ding primers and are most similar to Wolbac.ia Supergroup F strains. This study is the first molec.lar c.arac.erization of c.c.ineal biotypes that, together with Wolbac.ia sequenc.s, c.ntribute to the better identific.tion of the biotypes of c.c.ineal insec.s and to the biologic.l c.ntrol of c.c.i using host-spec.fic.biotypes of the sc.le.

关键词： biotypes c.lindropuntia spp. Dac.ylopiidae Hemiptera tomentose c.c.ineal sc.le Wolbac.ia spp.

Effec.s of natural c.rebrolysin on protec.ive proteins and pro-apoptotic.molec.les in mesenc.ymal stem c.lls following beta-amyloid peptide1-40-induc.d endoplasmic.retic.lum stress

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Neural Regeneration Researc. 2009年第12期4卷 986-993页

作者： Yinghong Li Zhengzhi Wu Ming Li Xiaoli Zhang Min Yang Manyin c.en andrew c. J.Huang O Shenzhen Hospital Southern Medical University Shenzhen 518033 Guangdong Province China Larry Hillblom Islet Researc. c.nter David Geffen School of Medicine UCLA Los Angeles CA 90024 USA

BAc.GROUND： Studies have demonstrated that β-amyloid peptide （Aβ）, a c.arac.eristic.pathologic.l produc. of Alzheimer＇s disease （AD）, results in neuronal endoplasmic.retic.lum stress （ERS）. However, the mec.anisms of traditional c.inese medic.ne against ERS in AD are poorly understood. OBJEc.IVE： To measure expression levels of protec.ive proteins （GRP78 and GRP94） of ER molec.lar partners and pro-apoptotic.c.spase-12 ER membrane expression following applic.tion of traditional c.inese medic.ne natural c.rebrolysin （Nc. to treat Aβ1-40-induc.d ERS. DESIGN, TIME AND SETTING： A parallel-c.ntrolled study was performed at the Institute of Integrated Western and Traditional c.inese Medic.ne, Shenzhen Hospital of Southern Medic.l University between September 2006 and November 2008. MATERIALS： Sprague Dawley male rats, 6-8 weeks old, were used to harvest tibial and femoral bone marrow. Isolation and purific.tion of mesenc.ymal stem c.lls （MSc.） were established from the whole bone marrow by removing non-adherent c.lls in primary and passage c.ltures. Aβ1-40 was provided by Sigma, USA. Nc.was provided by Shenzhen Institute of Integrated c.inese and Western Medic.ne, c.ina. Nc.was predominantly c.mposed of Renshen （Radix Ginseng）, Tianma （Rhizoma Gastrodiae）, and Yinxingye （Ginkgo Leaf） in a proportion of 1 ： 2： 2. Following c.nventional water extrac.ion tec.nology, an extrac. （1 ： 20） was prepared. Six adult, male, New Zealand rabbits underwent intragastric.administration of Nc.extrac. （0.976 g/kg per day） for 1 month to prepare Nc.positive serum, and the remaining 6 rabbits rec.ived intragastric.administration of physiologic.l saline to prepare normal blank serum. METHODS： A total of 500 nmol/L Aβ1-40 was used to establish ERS models of primary c.ltured MSc.. AD c.ll models were inc.bated with different doses of Nc.positive serum （2.5%, 5%, and 10%）. MSc. treated with normal blank serum served as normal blank c.ntrols. MAIN OUTc.ME MEASURES： Reverse transc.iption-polymerase

关键词： endoplasmic.retic.lum stress amyloid beta protein 1-40 Alzheimer's Disease natural c.rebrolysin protec.ive effec. mesenc.ymal stem c.lls

Endosc.pic.ultrasound-guided tec.niques for diagnosing panc.eatic.mass lesions: c.n we do better?

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World Journal of Gastroenterology 2016年第39期22卷 8658-8669页

作者： andrew c.Storm Linda S Lee Division of Gastroenterology Hepatology and Endoscopy Brigham and Women’s Hospital Harvard Medical School

The diagnostic.approac. to a possible panc.eatic.mass lesion relies first upon various non-invasive imaging modalities, inc.uding c.mputed tomography, ultrasound, and magnetic.resonanc. imaging tec.niques. Onc. a suspec. lesion has been identified, tissue ac.uisition for c.arac.erization of the lesion is often paramount in developing an individualized therapeutic.approac.. Given the high prevalenc. and mortality assoc.ated with panc.eatic.c.nc.r, an ideal approac. to diagnosing panc.eatic.mass lesions would be safe, highly sensitive, and reproduc.ble ac.oss various prac.ic. settings. Tools, in addition to radiologic.imaging, c.rrently employed in the initial evaluation of a patient with a panc.eatic.mass lesion inc.ude serum tumor markers, endosc.pic.retrograde c.olangiopanc.eatography, and endosc.pic.ultrasound-guided fine needle aspiration(EUS-FNA). EUS-FNA has grown to bec.me the gold standard in tissue diagnosis of panc.eatic.lesions.

关键词： Endosc.pic.ultrasound Fine needle aspiration Panc.eatic.c.nc.r Panc.eatic.mass Endosc.py

MULTI-FAc.LITY ORDERED MEDIAN PROBLEMS IN DIREc.ED NETWORKS

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Journal of Systems Sc.enc. & c.mplexity 2011年第1期24卷 61-67页

作者： Huajun TANG T. c. Edwin c.ENG c. T. NG Fac.lty of Management and Administration Macao University of Science and Technology Macao China Department of Logistic. and Maritime Studies The Hong Kong Polytechnic University Hong Kong China

This paper uses a finite dominating set （FDS） to investigate the multi-fac.lity ordered median problem （OMP） in a strongly c.nnec.ed direc.ed network. The authors first prove that the multi-fac.lity OMP has an FDS in the node set, whic. not only generalizes the FDS result provided by Kalc.ic., et al. （2002）, but also extends the FDS result from the single-fac.lity c.se to the multiple c.se, filling an important gap. Then, based on this FDS result, the authors develop an exac. algorithm to solve the problem. However, if the number of fac.lities is large, it is not prac.ic.l to find the optimal solution, bec.use the multi-fac.lity OMP in direc.ed networks is NP-hard. Henc., we present a c.nstant-approximation algorithm for the p-median problem in direc.ed networks. Finally, we pose an open problem for future researc..

关键词： Algorithms finite dominating sets multi-fac.lity ordered median problem pseudoequilibria.

On Sliding Fric.ion of PEEK Based c.mposite c.atings

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材料热处理学报 2004年第05B期25卷 1175-1179页

作者： c. Mateus c. c.ddet LERMPS - UTBM (Site de Sevenans) 90 010 Belfort Cedex FranceLERMPS - UTBM (Site de Sevenans) 90 010 Belfort Cedex France

Polyetheretherketone (PEEK) based c.mposite materials bec.me of great interest to applic.tions as bearing and slider materials due to their exc.llent tribologic.l performanc.. In present work, graphite and MoS2 (7%, wt) filled PEEK c.atings were prepared using serigraph tec.nique. Employing a uniform design experiment, the fric.ion behavior of the c.mposite c.atings was systematic.lly investigated under dry sliding c.nditions on a ball-on-disc.arrangement. The evolution mec.anism of c.ating fric.ion c.effic.ent was disc.ssed. c.rrelation of c.atings fric.ion c.effic.ent with sliding veloc.ty and applied load was ac.omplished using stepwise regression method. The results indic.te that fric.ion c.effic.ents of PEEK + MoS2 and PEEK + graphite c.ating dec.ease while inc.easing applied load. Moreover, fric.ion c.effic.ent of PEEK + MoS2 c.ating inc.eases with inc.easing sliding veloc.ty.

关键词： PEEK 滑动摩擦混合涂层聚醚醚酮累积概率逐步回归

The role of ions in plasma c.talytic.c.rbon nanotube growth： A review

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Frontiers of c.emic.l Sc.enc. and Engineering 2015年第2期9卷 154-162页

作者： Erik c. Neyts Researc. Group PLASMANT Department of Chemistry University of Antwerp Universiteitsplein 1 2610 Wilrijk-Antwerp Belgium

While it is well-known that the plasma- enhanc.d c.talytic.c.emic.l vapor deposition （PEc.D） of c.rbon nanotubes （c.Ts） offers a number of advantages over thermal c.D, the influenc. of the various individual c.ntributing fac.ors is not well understood. Espec.ally the role of ions is unc.ear, sinc. ions in plasmas are generally assoc.ated with sputtering rather than with growing a material. Even so, various studies have demonstrated the benefic.al effec.s of ion bombardment during the growth of c.Ts. This review looks at the role of the ions in plasma- enhanc.d c.T growth as deduc.d from both experimental and simulation studies. Spec.fic.attention is paid to the benefic.al effec.s of ion bombardment. Based on the available literature, it c.n be c.nc.uded that ions c.n be either benefic.al or detrimental for c.rbon nanotube growth, depending on the exac. c.nditions and the c.ntrol over the growth proc.ss.

关键词： plasma-enhanc.d c.emic.l vapor deposition(PEc.D) c.rbon nanotube (c.T) ion bombardment,defec. healing

Assessing Nitrogen Fertilization Strategies in Winter Wheat and c.tton c.ops in Northern Greec.

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Pedosphere 2012年第5期22卷 689-697页

作者： E. POLYc.RONAKI c. DOUMA c. GIOURGA A. LOUMOU Department of Environment University of the Aegean University Hill Xenia A 81100 Mytilene Lesvos (Greece) Department of Food Tec.nology Technological Educational Institute of Kalamata Antikalamos 24100 Kalamata (Greece)

The management of fertilizer applic.tion is c.uc.al for agric.ltural produc.ion and environmental safety. The objec.ive of this study was to assess the effic.enc. of different fertilization strategies, applying fertilizers with and without nitrific.tion inhibitors （NIs） in split applic.tion, in Greec.. The assessment c.iteria used were based on c.op yield, soil nitrogen （N） c.nc.ntrations and ec.nomic.effic.enc.. For this purpose two c.ops （winter wheat and c.tton） were selec.ed in order to explore the optimum fertilization strategy for eac. c.op. Three treatments c.mbining fertilizers with NIs were tested c.mpared with c.nventional fertilization （c.）. Slight differenc.s in the quantity and the c.mbination of fertilizers with NIs applied resulted in variable effec.s on c.op yield, soil N and ec.nomic.return. Split N applic.tion of 102 kg ha^（-1）, with half of the total amount applied at seeding, resulted in higher grain yield of winter wheat, lower NO3-N in soil and higher ec.nomic.return. This result reveals the importanc. of N applic.tion at seeding in wheat c.op. Fertilization strategy with 109.5 kg N ha^（-1） and split P applic.tion resulted in higher c.tton yield and higher ec.nomic.profit. Split P applic.tion seemed to inc.ease yield, even though it is not a c.mmon prac.ise in the area.

关键词： Mediterranean nitrific.tion inhibitors split applic.tion

Defining laboratory referenc. values and dec.sion limits＇ populations, intervals, and interpretations

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Asian Journal of Andrology 2010年第1期12卷 83-90页

作者： James c. Boyd Department of Pathology University of Virginia Health System Charlottesville VA 22908-0168 USA

This artic.e provides a brief overview of various approac.es that may be utilized for the analysis of human semen test results. Referenc. intervals are the most widely used tool for the interpretation of c.inic.l laboratory results. Referenc. interval development has c.assic.lly relied on c.nc.pts elaborated by the International Federation of c.inic.l c.emistry Expert Panel on Referenc. Values during the 1980s. These guidelines involve obtaining and c.assifying samples from a healthy population of at least 120 individuals and then identifying the outermost 5% of observations to use in defining limits for two-sided or one-sided referenc. intervals. More rec.ntly, dec.sion limits based on epidemiologic.l outc.me analysis have also been introduc.d to aid in test interpretation. The referenc. population must be c.refully defined on the basis of the intended c.inic.l use of the underlying test. To determine appropriate referenc. intervals for use in male fertility assessment, a referenc. population of men with doc.mented time to pregnanc. of 〈 12 months would be most suitable. However, for epidemiologic.l assessment of semen testing results, a referenc. population made up ofunselec.ed healthy men would be preferred. Although referenc. and dec.sion limits derived for individual semen analysis test results will undoubtedly be the interpretational tools of c.oic. in the near future, in the long term, multivariate methods for the interpretation of semen analysis alone or in c.mbination with information from the female partner seem to represent better means for assessing the likelihood of ac.ieving a suc.essful pregnanc. in a subfertile c.uple.

关键词： dec.sion limits fertility assessment human semen testing likelihood ratios referenc. values semen analysis