|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 用机械破坏技术优化PP纤维和非织造布的性能显示文摘描述了汽巴精化公司生产的一种高分子改性剂Irgatec CR76。Irgatec CR76用于PP品级的受控降解,特别用于PP纤维和非织造布的生产,能明显地改善标准PP品级、纤维和非织造布的性能。添加剂对加工、贮存和使用的安全性,是从过滤等产业用途到卫生用品的广泛用途的基础。 | A.Schneider M.Roth 桑榆(译) 申熠(校) | 2006 | 国际纺织导报2006，34，10： | 3 |
| 2 | Community phylogenetic diversity and abiotic site characteristics influence abundance of the invasive plant Rhamnus cathartica L.显示文摘Aims Theory predicts that the success of introduced species is related to the diversity of native species through trait-based processes.Abiotic site characteristics may also affect a site’s susceptibility to invasion.We quantified resident plant species richness,phylogenetic diversity and several abiotic site characteristics for 24 oak forests in Minnesota,USA,to assess their impact on the abundance of a widespread,introduced terrestrial plant species,common buckthorn(Rhamnus cathartica L.).Specifically,we asked(1)whether resident species richness and phylogenetic diversity affected the abundance of R.cathartica and(2)what site characteristics explained the overall abundance of R.cathartica.Methods Our survey included 24 oak-dominated stands in Minnesota’s deciduous forests.In each stand,we identified all species in 16 plots.We also measured a series of environmental site characteristics,including canopy openness(a proxy for light availability),percent bare soil,soil pH,percent sand,an index of propagule availability,duff layer thickness(a proxy for earthworm activity),an index of insolation and slope.For all species present in at least one site,we estimated a community phylogeny.We combined all sitelevel characteristics,including phylogenetic diversity of the resident plant species,in a multiple regression model to examine site-level drivers of community invasibility.Important Findings Results indicate that sites with higher overall plant phylogenetic diversity harbor less R.cathartica,even though native species richness was not significantly related to R.cathartica abundance.Regression analyses indicated that,in addition to resident species phylogenetic diversity,the most important predictors of R.cathartica abundance were canopy openness and the amount of bare soil,both positively related to the abundance of the invader.By combining the effects of abiotic site characteristics and resident species phylogenetic diversity in a model that predicted the abundance of R.cathartica,we were able to simultaneously account for a wide range of factors that might influence invasibility.Overall,our results suggest that management strategies aimed at reducing disturbances that lead to increased bare soil and light levels may be more successful if they also maximize phylogenetic diversity of the resident plant community. | Timothy J.S.Whitfeld Alexandra G.Lodge Alexander M.Roth Peter B.Reich | 2014 | Journal of Plant Ecology2014，7，2： | 2 |
| 3 | National Attachment and Patriotism in a European Nation: A British Study显示文摘 | Despina M.Rothì EvanthiaLyons XeniaChryssochoou | 2005 | Political Psychology2005，，1： | 1 |
| 4 | Gene silencing of HIF-2α disrupts glioblastoma stem cell phenotype显示文摘malignancy and recurrence in glioblastoma multiforme.Hypoxic regions within the tumor microenvironment help maintain and promote the proliferation of CSCs.Here,we explored the effects of silencing hypoxia inducible factor-2α(HIF-2α)because of its specificity for CSCs within the hypoxic environment.Methods:Cancer stem cell neurospheres were formed by enriching from both the glioblastoma cell line U87 and from brain tumor stem cells isolated directly from human brain tumors.Silencing of human HIF-2αwas performed using both commercial and in-house transfection of a validated short interfering RNA,with all results compared to an established non-silencing control short interfering RNA.Silencing of HIF-2αwas established by Western blotting,and phenotypic effects were assayed by cell migration assays,cell viability measurements,and immunofluorescence staining of differentiation markers.Results:Transfection with either our previously reported pH-sensitive,cationic amphiphilic macromolecule-based delivery system or Lipofectamine was similarly effective in silencing HIF-2α.The chemotherapeutic resistance and neurosphere formation were reduced when HIF-2αwas silenced.Migratory capacities in the presence of macrophage conditioned media were modulated.HIF-2αsilencing was complementary to temozolomide treatment in producing phenotypic rather than cytotoxic effects.Conclusion:HIF-2αsilencing under hypoxia inhibited CSC phenotypes while promoting differentiated cell phenotypes and is complementary to existing DNA alkylating treatments in inhibiting glioma CSC activity. | Leora M.Nusblat Shaili Tanna Charles M.Roth | 2020 | Cancer Drug Resistance2020，3，2： | 0 |
| 5 | Accelerating ions with high-energy short laser pulses from submicrometer thick targets显示文摘Using the example of the PHELIX high-energy short pulse laser we discuss the technical preconditions to investigate ion acceleration with submicrometer thick targets. We show how the temporal contrast of this system was improved to prevent pre-ionization of such targets on the nanosecond timescale. Furthermore the influence of typical fluctuations or uncertainties of the on-target intensity on ion acceleration experiments is discussed. We report how these uncertainties were reduced by improving the assessment and control of the on-shot intensity and by optimizing the positioning of the target into the focal plane. Finally we report on experimental results showing maximum proton energies in excess of 85 MeV for ion acceleration via the target normal sheath acceleration mechanism using target thicknesses on the order of one micrometer. | F.Wagner C.Brabetz O.Deppert M.Roth T.Stohlker An.Tauschwitz A.Tebartz B.Zielbauer V.Bagnoud | 2016 | High Power Laser Science and Engineering2016，4，4： | 0 |
| 6 | Reflection of intense laser light from microstructured targets as a potential diagnostic of laser focus and plasma temperature显示文摘The spatial-intensity profile of light reflected during the interaction of an intense laser pulse with a microstructured target is investigated experimentally and the potential to apply this as a diagnostic of the interaction physics is explored numerically. Diffraction and speckle patterns are measured in the specularly reflected light in the cases of targets with regular groove and needle-like structures, respectively, highlighting the potential to use this as a diagnostic of the evolving plasma surface. It is shown, via ray-tracing and numerical modelling, that for a laser focal spot diameter smaller than the periodicity of the target structure, the reflected light patterns can potentially be used to diagnose the degree of plasma expansion, and by extension the local plasma temperature, at the focus of the intense laser light. The reflected patterns could also be used to diagnose the size of the laser focal spot during a high-intensity interaction when using a regular structure with known spacing. | J.Jarrett M.King R.J.Gray N.Neumann L.Dhl C.D.Baird T.Ebert M.Hesse A.Tebartz D.R.Rusby N.C.Woolsey D.Neely M.Roth P.McKenna | 2019 | High Power Laser Science and Engineering2019，7，1： | 0 |
| 7 | 生物治疗时代的外科手术显示文摘自20世纪90年代后期首个抗肿瘤坏死因子抗体问世后,生物治疗为炎症性肠病(IBD)患者的药物治疗带来了革命性的改变。然而,外科手术在IBD的治疗中仍然占据重要作用。无论是对于克罗恩病的小肠切除术还是对溃疡性结肠炎的结肠切除术,手术切除率长期以来一直在下降但降幅并不显著。不断增多的生物制剂可越来越多地满足不同情况下IBD患者的治疗需求。于是,出现了一系列关于生物制剂如何影响手术需求及IBD病程的问题。考虑到生物制剂越来越早且越来越多地应用于IBD患者,了解这些药物对手术决策和外科预后的影响,对于结直肠外科医生和胃肠科医生的临床实践是必需的。本文总结了生物治疗与IBD手术方面的相关文献,重点是探讨在“手术治疗时代”,生物制剂对手术频率、类型及并发症的影响。 | Daniel J.Wong Eve M.Roth Joseph D.Feuerstein Vitaliy Y.Poylin | 2019 | Gastroenterology Report2019，7，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员