语境在口译理解、信息推理与预测、译语输出等方面都发挥着重要作用。数字化资源在口译教学中已经得到广泛应用,但语境缺失是其中不容忽视的问题。文章以技术手段重构资源语境为着眼点,以IVY(Interpreting in Virtual Reality,虚拟现实...语境在口译理解、信息推理与预测、译语输出等方面都发挥着重要作用。数字化资源在口译教学中已经得到广泛应用,但语境缺失是其中不容忽视的问题。文章以技术手段重构资源语境为着眼点,以IVY(Interpreting in Virtual Reality,虚拟现实口译)资源库为例,从环境语境、角色语境、认知语境、任务语境等方面探讨了数字化口译教学资源的语境重构方法,以期对提升数字化资源的应用价值、增强口译教学的效果有所助益。展开更多
Plant peroxidase extracted from Coccinia grandis Lin. （Ivy gourd） was purified from crude extract by ammonium sulfate precipitation, ion-exchange chromatography, and size exclusion chromatography. The purified enzym...Plant peroxidase extracted from Coccinia grandis Lin. （Ivy gourd） was purified from crude extract by ammonium sulfate precipitation, ion-exchange chromatography, and size exclusion chromatography. The purified enzyme preparation exhibited a specific activity of 6106.63 p.mol.minl.mg protein1, while purification fold and yield were 17.45 and 34.70%, respectively. The purified peroxidase was homogenous as judged by native and sodium dodecyl sulfate （SDS） polyacrylamide gel electrophoresis. The molecular weight as determined by gel filtration and SDS-polyacrylamide gel electrophoresis was 45 kD, which suggested that the purified peroxidase contained only one subunit. The apparent Km and Vmax values of the enzyme against phenol were 93 p.M and 561 μmol.min^-1.mg protein^-1, respectively. The temperature and pH optimum for purified peroxidase were 45℃ and pH 6.0, respective. However, it was stable at 30-60℃ and pH 4.0-8.0. The presence of metal ions such as Cu2＋ and Ca2＋ enhanced peroxidase activity. On the other hand, Cr3＋ and Hg2＋ strongly inhibited the enzyme activity at 500 p.M. Sodium dodecyl sulfate reduced a half of peroxidase activity at approximately 3 mM. Ivy gourd was stability in the presence of each urea concentrations. The affinity of the enzyme with different substrates showed as the highest relative activities on gallic acid followed by catechin, ascorbic acid and caffeic acid, respectively.展开更多
Recently,the press conference was held at Shanghai Time Square of Warner Hotel.Mrs Karin Malmstrom, Director of Cotton Council International, China was present at the conference and
Alberto Pacheco,PhD Dr.Alberto Pacheco has been the Director of the Andrology Laboratory and Sperm Bank at IVI Madrid,IVI Valladolid and IVI Salamanca(Spain)since 2001.He holds a PhD in Biological Sciences since 1997 ...Alberto Pacheco,PhD Dr.Alberto Pacheco has been the Director of the Andrology Laboratory and Sperm Bank at IVI Madrid,IVI Valladolid and IVI Salamanca(Spain)since 2001.He holds a PhD in Biological Sciences since 1997 from the Complutense University of Madrid in Spain,and he also has a Master in Reproductive Medicine since 2005.展开更多
Objective Tissue uptake and distribution of nano-/microplastics was studied at a single high dose by gavage in vivo.Methods Fluorescent microspheres(100 nm,3μm,and 10μm)were given once at a dose of 200 mg/(kg∙body w...Objective Tissue uptake and distribution of nano-/microplastics was studied at a single high dose by gavage in vivo.Methods Fluorescent microspheres(100 nm,3μm,and 10μm)were given once at a dose of 200 mg/(kg∙body weight).The fluorescence intensity(FI)in observed organs was measured using the IVIS Spectrum at 0.5,1,2,and 4 h after administration.Histopathology was performed to corroborate these findings.Results In the 100 nm group,the FI of the stomach and small intestine were highest at 0.5 h,and the FI of the large intestine,excrement,lung,kidney,liver,and skeletal muscles were highest at 4 h compared with the control group(P<0.05).In the 3μm group,the FI only increased in the lung at 2 h(P<0.05).In the 10μm group,the FI increased in the large intestine and excrement at 2 h,and in the kidney at 4 h(P<0.05).The presence of nano-/microplastics in tissues was further verified by histopathology.The peak time of nanoplastic absorption in blood was confirmed.Conclusion Nanoplastics translocated rapidly to observed organs/tissues through blood circulation;however,only small amounts of MPs could penetrate the organs.展开更多
本文从科研产出数量、质量和影响力这三个维度,基于1981-2013年Web of Science论文收录信息,以非C9的"985工程"大学以及非"985工程"的"211工程"大学为国内参照样本,以美国IVY大学和澳大利亚Go8大学为国...本文从科研产出数量、质量和影响力这三个维度,基于1981-2013年Web of Science论文收录信息,以非C9的"985工程"大学以及非"985工程"的"211工程"大学为国内参照样本,以美国IVY大学和澳大利亚Go8大学为国际一流大学参照样本,就我国C9大学基础科研生产力进行了比较研究。整体分析发现,我国C9大学在基础科研生产力的三个维度均遥遥领先于国内其他研究型大学;与IVY大学和Go8大学相比,尽管C9大学呈现出强劲的追赶态势,但在基础科研产出质量与影响力方面差距仍然明显,建设世界一流大学的任务相当艰巨。分学科分析发现,C9大学22个学科基础科研生产力状况整体呈现提升趋势,但与IVY大学存在很大差距。计算机科学、环境科学/生态学、空间科学、物理学等服务于国家科技创新、国家发展转型和重大战略需求的学科及其交叉学科,C9大学的学科影响力长期落后于世界平均水平。此外,相对于IVY大学和Go8大学在优势学科影响力上的稳定状态,C9大学优势学科影响力的波动较大,在未来学科建设工作中,需特别重视优势学科的保持和持续发展。展开更多
文摘语境在口译理解、信息推理与预测、译语输出等方面都发挥着重要作用。数字化资源在口译教学中已经得到广泛应用,但语境缺失是其中不容忽视的问题。文章以技术手段重构资源语境为着眼点,以IVY(Interpreting in Virtual Reality,虚拟现实口译)资源库为例,从环境语境、角色语境、认知语境、任务语境等方面探讨了数字化口译教学资源的语境重构方法,以期对提升数字化资源的应用价值、增强口译教学的效果有所助益。
文摘Plant peroxidase extracted from Coccinia grandis Lin. （Ivy gourd） was purified from crude extract by ammonium sulfate precipitation, ion-exchange chromatography, and size exclusion chromatography. The purified enzyme preparation exhibited a specific activity of 6106.63 p.mol.minl.mg protein1, while purification fold and yield were 17.45 and 34.70%, respectively. The purified peroxidase was homogenous as judged by native and sodium dodecyl sulfate （SDS） polyacrylamide gel electrophoresis. The molecular weight as determined by gel filtration and SDS-polyacrylamide gel electrophoresis was 45 kD, which suggested that the purified peroxidase contained only one subunit. The apparent Km and Vmax values of the enzyme against phenol were 93 p.M and 561 μmol.min^-1.mg protein^-1, respectively. The temperature and pH optimum for purified peroxidase were 45℃ and pH 6.0, respective. However, it was stable at 30-60℃ and pH 4.0-8.0. The presence of metal ions such as Cu2＋ and Ca2＋ enhanced peroxidase activity. On the other hand, Cr3＋ and Hg2＋ strongly inhibited the enzyme activity at 500 p.M. Sodium dodecyl sulfate reduced a half of peroxidase activity at approximately 3 mM. Ivy gourd was stability in the presence of each urea concentrations. The affinity of the enzyme with different substrates showed as the highest relative activities on gallic acid followed by catechin, ascorbic acid and caffeic acid, respectively.
文摘Recently,the press conference was held at Shanghai Time Square of Warner Hotel.Mrs Karin Malmstrom, Director of Cotton Council International, China was present at the conference and
文摘Alberto Pacheco,PhD Dr.Alberto Pacheco has been the Director of the Andrology Laboratory and Sperm Bank at IVI Madrid,IVI Valladolid and IVI Salamanca(Spain)since 2001.He holds a PhD in Biological Sciences since 1997 from the Complutense University of Madrid in Spain,and he also has a Master in Reproductive Medicine since 2005.
基金supported by National Natural Science Foundation of China[grant number U21A20399]Liaoning Revitalization Talents Program[grant number XLYC1802059]+2 种基金the Key R&D Program of Liaoning Province[grant number2019JH2/10300044]the Key Laboratory Program of Liaoning Province[grant number 2018225113]the Key Laboratory Program of Shenyang City[grant number 21-103-0-16]。
文摘Objective Tissue uptake and distribution of nano-/microplastics was studied at a single high dose by gavage in vivo.Methods Fluorescent microspheres(100 nm,3μm,and 10μm)were given once at a dose of 200 mg/(kg∙body weight).The fluorescence intensity(FI)in observed organs was measured using the IVIS Spectrum at 0.5,1,2,and 4 h after administration.Histopathology was performed to corroborate these findings.Results In the 100 nm group,the FI of the stomach and small intestine were highest at 0.5 h,and the FI of the large intestine,excrement,lung,kidney,liver,and skeletal muscles were highest at 4 h compared with the control group(P<0.05).In the 3μm group,the FI only increased in the lung at 2 h(P<0.05).In the 10μm group,the FI increased in the large intestine and excrement at 2 h,and in the kidney at 4 h(P<0.05).The presence of nano-/microplastics in tissues was further verified by histopathology.The peak time of nanoplastic absorption in blood was confirmed.Conclusion Nanoplastics translocated rapidly to observed organs/tissues through blood circulation;however,only small amounts of MPs could penetrate the organs.
文摘本文从科研产出数量、质量和影响力这三个维度,基于1981-2013年Web of Science论文收录信息,以非C9的"985工程"大学以及非"985工程"的"211工程"大学为国内参照样本,以美国IVY大学和澳大利亚Go8大学为国际一流大学参照样本,就我国C9大学基础科研生产力进行了比较研究。整体分析发现,我国C9大学在基础科研生产力的三个维度均遥遥领先于国内其他研究型大学;与IVY大学和Go8大学相比,尽管C9大学呈现出强劲的追赶态势,但在基础科研产出质量与影响力方面差距仍然明显,建设世界一流大学的任务相当艰巨。分学科分析发现,C9大学22个学科基础科研生产力状况整体呈现提升趋势,但与IVY大学存在很大差距。计算机科学、环境科学/生态学、空间科学、物理学等服务于国家科技创新、国家发展转型和重大战略需求的学科及其交叉学科,C9大学的学科影响力长期落后于世界平均水平。此外,相对于IVY大学和Go8大学在优势学科影响力上的稳定状态,C9大学优势学科影响力的波动较大,在未来学科建设工作中,需特别重视优势学科的保持和持续发展。
