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    题名 作者 年代 出处 被引量
1Effectiveness of 3,4-Dimethylpyrazole Phosphate as Nitrification Inhibitor in Soil as Influenced by Inhibitor Concentration,Application Form, and Soil Matric Potential显示文摘The effcacy of nitrification inhibitors depends on soil properties and environmental conditions.The nitrification inhibitor 3,4-dimethylpyrazole phosphate(DMPP) was investigated in a sandy loam and a loamy soil to study its effec-tiveness as inffuenced by inhibitor concentration,application form,and soil matric potential.DMPP was applied with concentrations up to 34.6 mg DMPP kg-1 soil as solution or as ammonium-sulfate/ammonium-nitrate granules formulated with DMPP.DMPP inhibited the oxidation of ammonium in both soils,but this effect was more pronounced in the sandy loam than in the loamy soil.When applied as solution,increasing DMPP concentrations up to 7 mg DMPP kg-1 soil had no inffuence on the inhibition.The effectiveness of DMPP formulated as fertilizer granules was superior to the liquid application of DMPP and NH4+,particularly in the loamy soil.Without DMPP,a decline in soil matric potential down to -600 kPa decreased nitrification in both soils,but this effect was more pronounced in the sandy loam than in the loamy soil.DMPP was most effective in the sandy loam particularly under conditions of higher soil moisture,i.e.,under conditions favorable for nitrate leaching.G.BARTH S.VON TUCHER U.SCHMIDHALTER 2008Pedosphere2008,18,3:23
2Depression and anxiety in labor migrants and refugees-A systematic review and meta-analysis显示文摘Jutta Lindert Ondine S.von Ehrenstein Stefan Priebe 0,,02:1
3Heller’s esophagomyotomy with or without a 360° floppy Nissen fundoplication for achalasia. Long‐term results from a prospective randomized study显示文摘D.Falkenback J.Johansson S.?berg A.Kjellin J.Wenner T.Zilling F.Johnsson C. S.Von Holstein B.Walther 2003Diseases of the Esophagus2003,,4:1
4Levels of 4‐aminobiphenyl‐induced somatic H‐ras mutation in mouse liver DNA correlate with potential for liver tumor development显示文摘Barbara L.Parsons Frederick A.Beland Linda S.Von Tungeln Robert R.Delongchamp Peter P.Fu Robert H.Heflich 2005Mol. Carcinog2005,,4:1
5注意力缺陷/多动症和儿童期自闭症与产前暴露于全氟烷基物质之间的关联:丹麦全国出生队列的一项巢式病例对照研究显示文摘[背景]全氟烷基物质(PFASs)是持久性污染物,动物实验中具有内分泌干扰性和神经毒性。一些横断面数据显示PFASs与儿童神经行为的问题之间存在正向关联,但是来自前瞻性研究的结果仍然有限。[目的]研究产前暴露于PFASs是否与儿童中的注意力缺陷/多动障碍(ADHD)或儿童期自闭症之间有关联。[方法]在1996—2002年丹麦全国出生队列的83 389对母子中,根据丹麦国家医院登记和丹麦精神病中心登记,确定了890名ADHD病例和301名儿童自闭症病例。从这个队列中,随机各选择220例多动症和自闭症病例,并随机选择550例性别相匹配的对照儿童。测量在妊娠早期或中期采集的母体血浆中16种PFASs,使用广义线性模型计算风险比(RRs),模型中考虑到了抽样权重。[结果]在所有样品中均检测到全氟辛烷磺酸(PFOS)和全氟辛酸(PFOA),在≥90%的样本中可以定量其他4种PFASs。没有发现母亲PFAS血浆水平和ADHD之间关联的一致性证据[浓度(ng/m L)的自然对数值每增加一个单位,PFOS对应的RR=0.87(95%CI:0.74,1.02),PFOA对应的RR=0.98(95%CI:0.82,1.16)],对于自闭症也是如此[浓度(ng/m L)的自然对数每增加一个单位,PFOS对应的RR=0.92(95%CI:0.69,1.22),PFOA对应的RR=0.98(95%CI:0.73,1.31)]。在同时校正所有PFASs的模型中,较高的PFAS分位数和ADHD之间既有阳性关联也有阴性关联,但是这些关联的估计值并不精确。[结论]在这项研究中,没有发现一致性的证据能够提示产前PFAS暴露增加儿童中ADHD或儿童期自闭症儿的风险。Zeyan Liew Beate Ritz Ondine S.von Ehrenstein Bodil Hammer Bech Ellen Aagaard Nohr Chunyuan Fei Rossana Bossi Tine Brink Henriksen Eva Cecilie Bonefeld-Jφrgensen Jφrn Olsen 2015环境与职业医学2015,32,10:1
6Battle at the entrance gate:CIITA as a weapon to prevent the internalization of SARS-CoV-2 and Ebola viruses显示文摘In a recent paper in Science,Bruchez et al.1 provide new insights how host cells can fight virus infection.They show that an MHC class II transactivator(CIITA)—which normally operates as part of the interferon(IFN)-stimulated immune response—is also involved in an antiviral response,beyond its well-known function of antigen presentation.Rafal Butowt Krzysztof Pyrc Christopher S.von Bartheld 2020Signal Transduction and Targeted Therapy2020,5,1:0
7纺纱厂的人工智能显示文摘Uptime智能系统的技术创新使预测成为可能。该系统可在机器发生故障前预先告知需要采取什么措施。当遭遇机器故障时,如果能提前预测,不仅可避免停机,还能节约成本、提高产品质量和纺织生产效率。瑞士立达公司提出了一种新型机器维护方法,在问题和故障发生之前进行预测,如图1所示。S.von Grünigen 吴妍(译) 孟粉叶(校) 2020国际纺织导报2020,48,4:0
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