检索结果-南通市图书馆

Layered buserite Mg-Mn oxide cathode for aqueous rechargeable Mg-ion battery

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2023年第3期11卷 840-850页

作者： Caiyun sun Hailian Wang Feixiang Yang Aitao Tang guangsheng Huang Lingjie Li Zhongting Wang Baihua Qu Chaohe Xu Shuangshuang Tan Xiaoyuan Zhou Jingfeng Wang Fusheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys College of Materials Science and EngineeringChongqing UniversityChongqing 400044China College of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China College of Aerospace Engineering Chongqing UniversityChongqing 400044China College of Physics Chongqing UniversityChongqing401331China

Owing to the features(high safety,inexpensive and environmental friendliness)of aqueous rechargeable Mg-ion batteries(ARMIBs),they have drawn extensive attention in the future energy storage ***,the poor Mg^(2+)migration kinetics during the Mg^(2+)intercalation/extraction still hinders the progress of developing suitable cathode ***,a layered buserite Mg-Mn oxide(MMO)material with large interlayer space(~9.70A)and low-crystalline structure is studied as a high-performance cathode in *** with the counterpart,the Mg^(2+)migration kinetics of the MMO cathode can be enhanced by its unique structure(bigger interlayer spacing and low-crystalline structure).The layered buserite MMO as a high-performance ARMIBs cathode exhibits high Mg storage capacity(50 mAg^(-1):169.3 mAh g^(-1)),excellent rate capability(1000 mAg^(-1):98.3 mAh g^(-1)),and fast Mg^(2+)migration(an average diffusion coefficient:~4.21×10-^(10)cm^(2)s^(-1))in 0.5 M MgCl_(2)aqueous ***,the MMO-1//AC full battery achieved a high discharge capacity(100 mAg^(-1):111 mAh g^(-1)),and an ignored fading over 5000 cycles(1000 mAg^(-1)).Therefore,layered Mg-Mn oxide with large interlayer space may break a new path to develop the promising ARMIBs.

关键词： Layered buserite phase Low-crystalline Mg-Mn oxide Fast Mg ion migration kinetic Aqueous Mg-ion battery

Dramatic transition between electric and magnetic rotations in ^(106)Ag

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2014年第9期57卷 1669-1675页

作者： ZHENG Yun ZHU LiHua CHEN YongShou WU XiaoGuang HE ChuangYe HAO Xin LIU Ying WANG ZhiMin LI XueQin LI guangsheng GAO ZaoChun sun HuiBin China Institute of Atomic Energy School of Physics and Nuclear Energy Engineering Beihang University Faculty of Science Shenzhen University School of Environmental and Biological Engineering Nanjing University of Science and Technology Nuclear and Radiation Safety Center Ministry of Environmental Protection

The lifetimes for the states of magnetic dipole band in106Ag have been measured using the Doppler-shift attenuation method via the reaction of100Mo(11B,5n)106Ag at a beam energy of 60 *** reduced transition strengths of the magnetic dipole band,the B(M1)/B(E2)ratios together with the signature of the level energy as a function of angular momentum for the positive parity states of106Ag show that a drastic change of excitation mode,that is,from electric rotation to magnetic rotation,occurs within one unit of spin at around Iπ=12+.Theoretical calculations based on the triaxial projected shell model consistently reproduce the experimental data and provide an explanation on the nature of observed phenomena such that the dynamical drift of the rotational axis suddenly from the principal axis to the tilted one,along the positive parity bands of106Ag.

关键词： lifetime measurements DSAM TPSM magnetic rotation electric rotation

Single-shot AAV-vectored vaccine against SARS-CoV-2 with fast and long-lasting immunity

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2023年第5期13卷 2219-2233页

作者： Fuhua Wu Shuang Luo Yongshun Zhang Yangsen Ou Hairui Wang Zhaofei Guo Chunting He Shuting Bai Penghui He Min Jiang Xiaoyan Chen guangsheng Du Xun sun Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan UniversityChengdu 610041China

Due to the insufficient long-term protection and significant efficacy reduction to new variants of current COVID-19 vaccines,the epidemic prevention and control are still ***,we employ a capsid and antigen structure engineering(CASE)strategy to manufacture an adenoassociated viral serotype 6-based vaccine(S663V-RBD),which expresses trimeric receptor binding domain(RBD)of spike protein fused with a biological adjuvant ***,the engineered S663V-RBD could rapidly induce a satisfactory RBD-specific IgG titer within 2 weeks and maintain the titer for more than 4 *** to the licensed BBIBP-CorV(Sinopharm,China),a single-dose S663V-RBD induced more endurable and robust immune responses in mice and elicited superior neutralizing antibodies against three typical SARS-CoV-2 pseudoviruses including wild type,C.37(Lambda)and B.1.617.2(Delta).More interestingly,the intramuscular injection of S663V-RBD could overcome pre-existing immunity against the *** its effectiveness,the CASE-based S663VRBD may provide a new solution for the current and next pandemic.

关键词： AAV vectors Capsid engineering Vaccine Antigen structure design SARS-CoV-2

工艺参数对淀粉/EVA生物质材料挤出发泡的影响及BP神经网络的预测

在线全文

学校读者我要写书评

暂无评论

复合材料学报 2014年第2期31卷 512-517页

作者：曾广胜孙刚湖南工业大学包装与材料工程学院株洲412007

以淀粉和乙烯醋酸乙烯酯(EVA)为原料制备淀粉/EVA生物质发泡材料,研究了螺杆转速、模头温度和含水率对挤出发泡的影响,并应用人工神经网络技术建立双层BP网络模型,将其正交实验结果作为样本进行训练,对生物质发泡材料的膨胀率进行预测... 详细信息

以淀粉和乙烯醋酸乙烯酯(EVA)为原料制备淀粉/EVA生物质发泡材料,研究了螺杆转速、模头温度和含水率对挤出发泡的影响,并应用人工神经网络技术建立双层BP网络模型,将其正交实验结果作为样本进行训练,对生物质发泡材料的膨胀率进行预测。结果表明,该BP神经网络模型能准确地预测出淀粉/EVA发泡材料的膨胀率,样品的膨胀率随着螺杆转速的增加而逐渐增大,在螺杆转速为320r/min时达到最大值;样品的膨胀率亦随着模头温度的升高而逐渐增大,在140℃时达到最大值;含水量对淀粉/EVA发泡材料的膨胀率影响显著。

关键词：发泡 BP神经网络螺杆转速模头温度膨胀率

两种药物治疗飞行人员根尖周炎伴窦道的疗效观察

在线全文

学校读者我要写书评

暂无评论

空军航空医学 2024年第1期41卷 13-16页

作者：丁立吴广升孙慧斌惠光艳张卓然王飞刘伟马丛丛海军青岛特勤疗养中心疗养二区口腔科青岛266071 青岛大学附属医院口腔医学中心牙体牙髓科青岛266003

目的研究Vitapex糊剂与氢氧化钙糊剂治疗飞行人员根尖周炎伴窦道的疗效。方法纳入2019年1月—2022年1月在海军青岛特勤疗养中心疗养的飞行人员,将经过口腔体检收治的60例患根尖周炎者作为研究对象,按随机数字表法分为对照组和观察组,各3... 详细信息

目的研究Vitapex糊剂与氢氧化钙糊剂治疗飞行人员根尖周炎伴窦道的疗效。方法纳入2019年1月—2022年1月在海军青岛特勤疗养中心疗养的飞行人员,将经过口腔体检收治的60例患根尖周炎者作为研究对象,按随机数字表法分为对照组和观察组,各30例。对照组采用氢氧化钙糊剂进行根管诊间封药;观察组采用Vitapex糊剂进行根管诊间封药。观察2组根管预备后诊间封药的治疗效果、炎症因子水平和不良反应等。结果观察组的总有效率高达100.00%,对照组的总有效率为76.67%,观察组总有效率高于对照组,差异有统计学意义(χ^(2)=5.822,P=0.016)。治疗前2组各炎症因子水平对比差异无统计学意义(t=0.079、0.112、0.261,P=0.938、0.911、0.795);治疗后2周,观察组各炎症因子水平均低于对照组,差异有统计学意义(t=2.925、2.516、9.068,P=0.005、0.015、<0.001)。2组不良反应包括局部肿胀、感染和咬合痛。观察组不良反应发生率为10.00%,对照组不良反应发生率为3.33%,2组不良反应发生率对比差异无统计学意义(χ^(2)=0.268,P=0.605)。结论Vitapex糊剂治疗根尖周炎效果较好,能明显控制飞行人员患牙的细菌感染,使飞行人员尽快恢复工作,为航卫保障提供有利支持。

关键词：飞行人员根尖周炎 Vitapex糊剂氢氧化钙糊剂临床疗效

On Beam Study of^(198)Bi Decay

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1995年第1期12卷 4-7页

作者： ZHOU Xiaohong sun Xiangfu LEI Xiangguo JIN Hanjuan LIU Zhong ZHANG Yuhu PAN Qiangyan GUO Yingxiang LUO Yixiao WEN Shuxian YUAN Guanjun LI guangsheng YANG Chunxiang Institute of Modern Physics Academia SinicaLanzhou 730000 Chinese Institute of Atomic Energy Beijing 102413

Excited nucleus ^(198)Bi was produced via the ^(187)Re(16O,5n)^(198)Bi ***γ-rays following theβ+/EC(electron capture)decay of ^(198)Bi were measured in beam by using a powerful multidetector *** on coincidences with the knownγ-rays of ^(198)Pb,five new transitions were identified and eight new energy levels were established for ^(198)Pb.

关键词： reaction coincidence

基于BP神经网络的生物质发泡材料性能预测模型及应用

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

复合材料学报 2014年第1期31卷 107-111页

作者：曾广胜孙刚湖南工业大学包装与材料工程学院株洲412007

以EVA(乙烯-醋酸乙烯酯)和淀粉质量比、甘油含量、NaHCO3含量为3个输入量,以拉伸强度和回弹率为输出量,建立3层BP(back propagation)神经网络,并将淀粉挤出发泡的正交实验结果作为样本对其进行训练,用以预测淀粉发泡材料的性能。研究结... 详细信息

以EVA(乙烯-醋酸乙烯酯)和淀粉质量比、甘油含量、NaHCO3含量为3个输入量,以拉伸强度和回弹率为输出量,建立3层BP(back propagation)神经网络,并将淀粉挤出发泡的正交实验结果作为样本对其进行训练,用以预测淀粉发泡材料的性能。研究结果证明,该BP神经网络能准确预测淀粉发泡材料的性能;同时发现,随着甘油含量的增加,淀粉发泡材料的回弹率逐渐增加,而拉伸强度则逐渐减小;NaHCO3发泡剂的质量分数为3%时,淀粉发泡材料的拉伸强度最小。研究结果将为提高生物质发泡材料的性能以及扩展其使用范围提供信息。

关键词：神经网络 EVA 发泡拉伸强度回弹率

在线全文

学校读者我要写书评

暂无评论

喉康散质量标准提升研究

中国药业 2024年第14期33卷 87-91页

作者：郝爽洁李广生李慧勇笔雪艳吉田黑龙江省中医药科学院黑龙江哈尔滨150036 黑龙江省药品检验研究院黑龙江哈尔滨150088 国家药品监督管理局中药质量研究与评价重点实验室黑龙江哈尔滨150088 黑龙江省中药质量研究与评价重点实验室黑龙江哈尔滨150088

目的提升喉康散的质量标准。方法采用显微鉴别法对珍珠层粉进行定性鉴别;采用薄层色谱(TLC)法对制剂中的生晒参、甘草、穿心莲叶进行定性鉴别;采用气相色谱法对薄荷脑、异龙脑、龙脑进行含量测定,色谱柱为PEG-20M毛细管柱(30 m×0.25 ... 详细信息

目的提升喉康散的质量标准。方法采用显微鉴别法对珍珠层粉进行定性鉴别;采用薄层色谱(TLC)法对制剂中的生晒参、甘草、穿心莲叶进行定性鉴别;采用气相色谱法对薄荷脑、异龙脑、龙脑进行含量测定,色谱柱为PEG-20M毛细管柱(30 m×0.25 mm,0.25μm),柱温为140℃,进样口温度为230℃,检测器温度为280℃,分流进样的分流比为20∶1(V/V),进样量为1μL。结果制剂中珍珠层粉显微特征明显;生晒参、穿心莲叶、甘草的TLC图斑点清晰,分离度好,阴性对照无干扰;薄荷脑、异龙脑、龙脑质量浓度分别在0.184~2.946 mg/mL(r=1.000 0)、0.039~0.972 mg/mL(r=0.999 8)、0.048~1.210 mg/mL(r=0.999 8)范围内与峰面积线性关系良好;精密度、稳定性、重复性试验结果的RSD均小于3.0%;平均加样回收率分别为99.84%,99.76%,99.74%,RSD分别为0.18%,0.21%,0.21%(n=6)。结论该方法操作简便,专属性强,重复性好,可为喉康散的质量控制提供参考。

关键词：喉康散质量标准显微鉴别法薄层色谱法气相色谱法

Application of a Method for Calculating the Organic Carbon Content by Well Logs to Faulted Basins

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2005年第2期2卷 76-81页

作者： sunJianping LiuLuofu PangXiongqi Gongguangsheng LiFengjun CollegeofResourceandInformation ChinaUniversityofPetroleumBeijing102200China ExplorationandDevelopmentInstituteofDaqingOilfield Daqing163712China

The source rock model used in this project was developed by French Petroleum Research Institute. The total organic carbon content was estimated primarily and directly by using continuous conventional logging curves (such as sonic and resistivity curves), which are calibrated through the laboratory analysis data of organic carbon of cores, cuttings or sidewall cores. Regional evaluations have been carried out in downwarping basins abroad. The Haila′er Basin is a faulted basin and the evaluation of such a basin is a new subject. On the basis of a regional evaluation method for the downwarping basins, a new method suitable to faulted basins was developed. The effect is satisfactory when this new method is applied to the Wu′erxun Sag and the Bei′er Sag.

关键词： Haila′er Basin Wu′erxun and Bei′er sags well logs organic carbon content regional evaluation contour maps