检索结果-南通市图书馆

Modulating carrier density of the(Ag)_(x)(MoO_(3))_(y)system to enhance SERS:Localized surface plasmon resonance contribution

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2023年第2期9卷 387-394页

作者： Lin Zhu Zhu Mao Peng Li menglei xu Zhen Meng Lei Chen Bing Zhao Stake Key Laboratory of Supramolecular Structure and Materials Jilin UniversityChangchun130012China School of Chemistry and Life Science Advanced Institute of Materials ScienceChangchun University of Technology Changchun130012China Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal UniversityChangchun130103China

Semiconductors typically exhibit long-wavelength LSPR absorption in the infrared region due to lower carrier *** the carrier density of semiconductors and blue-shifting their LSPR absorption to the visible and near-infrared region has always been a great ***,we discussed how the controllable carrier of(Ag)x(MoO_(3))y composite influences the LSPR based on SERS test and UVeViseNIR absorption *** were surprised to find that the LSPR absorption wavelength can be easily tuned from 950 to 735 nm by changing the sputtering power of MoO_(3)of the(Ag)x(MoO_(3))_(y)*** shows that LSPR can be precisely adjusted by increasing the semiconductor content and even the carrier *** addition,the carrier density was measured by Hall effect to investigate the SERS intensity change caused by electromagnetic(EM)enhancement,and obtain the relationship between the *** findings of this work provide an idea for tunable LSPR and the research of EM contributions to SERS.

关键词： Carrier density Localized surface plasmon resonance Semiconductor Electromagnetic Surface-enhanced Raman scattering

“大食物观”指导下的“食品安全学”课程改革思考

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

食品工业 2024年第2期45卷 253-255页

作者：徐梦蕾袁媛张婷金蕊马爽叶海青吉林大学食品科学与工程学院长春130062

“食品安全学”是高校食品相关专业的一门理论和应用兼备的专业教育课程,属于核心专业课程。在“大食物观”政策指导下,针对“食品安全学”课程特点,从教学理念、教学目标、教学内容、教学方法、考核方式6个方面对该课程进行教学改革与... 详细信息

“食品安全学”是高校食品相关专业的一门理论和应用兼备的专业教育课程,属于核心专业课程。在“大食物观”政策指导下,针对“食品安全学”课程特点,从教学理念、教学目标、教学内容、教学方法、考核方式6个方面对该课程进行教学改革与探索,旨在调动学生学习主动性,拓宽学生视野,提高学生运用食品安全学的基本原理分析和解决实际问题的综合能力,提高理论和实践教学效果,提升食品科学类专业人才培养质量。

关键词：大食物观食品安全课程思政教学改革工程教育认证专业

特殊医学用途全营养配方食品含片剂型研发技术展望

在线全文

学校读者我要写书评

暂无评论

食品工业 2024年第6期45卷 225-229页

作者：程远娟赵晓燕孙嘉张力王莹莹徐梦蕾吉林大学白求恩第二医院长春130000 吉林大学护理学院长春130000 吉林大学食品科学与工程学院长春130062

特殊医学用途配方食品作为一种营养补充途径,为患者提供有针对性的营养支持,是进行临床营养支持的一种有效途径。市面上的特殊医学用途配方食品的主要剂型为粉末及液态,含片类剂型相对缺乏。含片类制剂具有剂量准确、质量稳定、快速溶... 详细信息

特殊医学用途配方食品作为一种营养补充途径,为患者提供有针对性的营养支持,是进行临床营养支持的一种有效途径。市面上的特殊医学用途配方食品的主要剂型为粉末及液态,含片类剂型相对缺乏。含片类制剂具有剂量准确、质量稳定、快速溶解和吸收、服用方便、提高某些药物的稳定性和生物利用度,从而增强治疗效果、便于识别且生产成本相对低廉等优点。同时含片剂型也存在一定问题,如药物的光敏性、氧化性或水解性、制造和包装含片剂型可能需要特殊的设备和技术,以确保产品的质量和一致性、选择合适的包装材料和条件以确保药物的稳定性等。报告特殊医学用途配方食品含片剂型的技术现状、产品特点以及存在问题、未来发展等,为我国特殊医学用途全营养配方食品含片剂型的发展提供理论依据。

关键词：特殊医学用途配方食品含片剂型展望研发技术

The in vitro digestion fates of diacylglycerol under different intestinal conditions:a potential lipid source for lipid indigestion patients

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第2期13卷 1079-1092页

作者： Qingqing xu Weifei Wang Dongxiao Sun-Waterhouse Qian Zou menglei Yan xuan Liu Dongming Lan Yonghua Wang School of Food Science and Engineering South China University of TechnologyGuangzhou 510640China Sericultural and Agri-Food Research Institute Guangdong Academy of Agricultural SciencesGuangzhou 510610China School of Chemical Sciences The University of AucklandPrivate Bag 92019New Zealand Guangdong Youmei Institute of Intelligent Bio-manufacturing Co. Ltd.Foshan 528200China

The in vitro digestion models mimicking the gastrointestinal(GI)tract of general population and lipid indigestion patients(with lower levels of bile salts or pancreatic lipase)were selected to investigate whether diacylglycerols(DAGs)are potential good lipid sources for these *** oil-based DAG(LD)and linseed oil(LT)were ***-based emulsion((83.74±1.23)%)had higher lipolysis degree than LT-based emulsion((74.47±1.16)%)when monitoring the GI tract of normal population as previously *** conditions seriously decreased the digestive degree of LT-based emulsion((40.23±2.48)%-(66.50±3.70)%)while showed less influence on LD-based emulsion((64.18±2.41)%-(81.85±3.45)%).As opposed to LT-based emulsion,LD-based emulsion exhibited preference for releasing unsaturated fatty acids(especially oleic acid andα-linolenic acid)due to their different glycerolipid ***-based emulsion showed potential for providing lipids and nutrients(including essential fatty acids)for lipid indigestion patients.

关键词： Diacylglycerol In vitro digestion Lipolysis level Cholestatic Exocrine pancreatic insufficiency

Genistein and daidzein reduced chlorpyrifos induced damage in PC12 cell

在线全文

学校读者我要写书评

暂无评论

Oil Crop Science 2020年第1期5卷 1-5页

作者： Yu Gao Jiajia xu menglei xu Sunsen Shi Jinfeng Xiong College of Plant Protection Jilin Agricultural UniversityChangchunChina College of Food Science and Engineering/State Key Laboratory of Supramolecular Structure and Materials Jilin UniversityChangchunChina Changchun Institute of Biological Products ChangchunChina

The present study preliminarily evaluated neurotoxicity injuries induced by chlorpyrifos in PC12 cell,which were used as a model for nervous cell *** cultured PC12 cell,application of soy isoflavones(genistein,daidzein,monomer and mixture)significantly reduced chlorpyrifos induced toxicity,a widely used pesticide,and resulted in a better cell survival *** with isoflavones reduced malondialdehyde content,reactive oxygengeneration and acetylcholine level in medium,and maintained mitochondrial membrane potential *** enhanced endogenous antioxidant system in PC12 cell with an increasing in superoxide dismutase perunit *** reduced acetylcholine content in the *** and genistein showed different effects,and their combined effect were greater than *** conclusion,soy isoflavones as an antioxidant and neuroprotectant,enhanced choline metabolism,which effectively mitigated disadvantageous influence of PC12 cell caused by chlorpyrifos.

关键词： Chlorpyrifos Soy isoflavone Genistein Daidzein PC12 cell Cytotoxicity

飞燕式钢管混凝土系杆拱桥静载试验研究——以吉安大桥主桥为例

在线全文

学校读者我要写书评

暂无评论

工程技术研究 2023年第7期8卷 5-8页

作者：许梦雷上海同丰工程咨询有限公司上海201900

吉安大桥主桥为飞燕式钢管混凝土系杆拱桥,文章对该桥进行静载试验,介绍了试验工况及测点布置,同时基于结构有限元软件全桥仿真模拟分析,将试验实测数据与理论数据及规范值的进行对比分析,从而判断该桥在试验荷载作用下的实际工作状态... 详细信息

吉安大桥主桥为飞燕式钢管混凝土系杆拱桥,文章对该桥进行静载试验,介绍了试验工况及测点布置,同时基于结构有限元软件全桥仿真模拟分析,将试验实测数据与理论数据及规范值的进行对比分析,从而判断该桥在试验荷载作用下的实际工作状态是否满足设计要求。试验结果表明:该桥上部结构强度、刚度均满足设计及规范的要求,试验结果可供同类型桥梁试验参考。

关键词：飞燕式系杆拱桥静载试验荷载试验强度刚度

Current research on soybean pest management in China

在线全文

学校读者我要写书评

暂无评论

Oil Crop Science 2018年第4期3卷 215-227页

作者： Yu Gao Shusen Shi menglei xu Juan Cui College of Plant Protection Jilin Agricultural University/Ministry of Agriculture (Jilin) Innovation Center of Soybean Region Technology State Key Laboratory of Supramolecular Structure and Materials Jilin University

Pest is one of the important factors affecting soybean yield and quality. Until now, 404 species on soybean have been known based on literature review and a large scale survey. More than 20 key pests occur every year and are causing serious damage. In 3 different ecoregions(Northern ecoregion, Huang-Huai-Hai ecoregion and Central south ecoregion), pests occurrence and damage styles show a variety of regional characteristics. Soybean pests occurrence from north to south were shown as follow: from large pests to small pests, from chewing pests to sucking pests, from low reproductive rate and less generation pests to high reproductive rate and more generation pests. Soybean pest management is mainly based on resistant breeding, combining with monitoring, plant quarantine, cultural, biological, physical, mechanical and chemical controls in China. Although pesticides play an important role in practice, the absence of reasonable use has threatened sustainability of China's soybean production. Soybean integrated pest management is not the only strategy, and it still needs improvement and development, but it's the best alternative for pest control. It can be expected that integrated pest management will remain as the main strategy for soybean pest control in future. Further innovation of green prevention and control technology will also become a focus of future research in view of new pest problems brought about by crop restructuring, agricultural system change and global climate change. Integration of above technologies will reduce the harm of pests and production costs as well as improving soybean production capacity. In this review, research progress of Chinese soybean pest and its management was summarized and some suggestions were provided to adapt for soybean pest management under current situation.

关键词： soybean pest management biological control pesticide

基于造纸废液提纯的高性能冷再生乳化剂制备及其性能研究

在线全文

学校读者我要写书评

暂无评论

公路交通技术 2024年第1期40卷 27-32页

作者：沈旭林萌蕾邵琴浙江省交通集团检测科技有限公司杭州310030

冷再生乳化剂是影响冷再生乳化沥青混合料性能优劣的关键因子之一,但冷再生乳化沥青核心原材料木质素均从国外进口,成本较高。为了研究国产木质素替代进口木质素的可行性,采用气相色谱(GC)和凝胶色谱(GPC)联用的方法,研究3家不同造纸厂... 详细信息

冷再生乳化剂是影响冷再生乳化沥青混合料性能优劣的关键因子之一,但冷再生乳化沥青核心原材料木质素均从国外进口,成本较高。为了研究国产木质素替代进口木质素的可行性,采用气相色谱(GC)和凝胶色谱(GPC)联用的方法,研究3家不同造纸厂的木质素活性位点数对乳化性能、冷再生混合料性能的影响。结果表明:1)木质素活性位点数越多,马歇尔强度越高,乳化性能越好,抗水损害性能越强;2)青山纸业的木质素活性位点数最多,平均可达9.48个,其乳化性能及混合料性能相对较优,且其混合料性能明显优于美德维什维克的W-5;3)湘江纸业的木质素活性位点数较少,平均仅为4.42个,其乳化性能和混合料性能相对较差,且混合料性能无法满足规范要求。因此青山纸业木质素可用于替代进口木质素制备冷再生乳化剂。

关键词：木质素活性位点数乳化混合料性能造纸废液提纯

在线全文

学校读者我要写书评

暂无评论

孵化过程中鸡胚性别分化期的判定

甘肃农业大学学报 2024年第2期59卷 17-23页

作者：王梦磊赵思琦徐梦竹王璐平高磊史娜王菊花安徽农业大学动物科技学院安徽合肥230036 鄂尔多斯市伊金霍洛旗林业和草原事业发展中心内蒙古鄂尔多斯017200

【目的】研究鸡胚孵化过程中,通过不同方法判断其性别分化的时间。【方法】以黄羽肉鸡胚蛋为研究对象,孵化黄羽肉鸡胚蛋(温度37.8℃,相对湿度60%)。分别通过胚线观察法、生殖腺器官形态观察法、组织学形态学、分子生物学来判断鸡的性别... 详细信息

【目的】研究鸡胚孵化过程中,通过不同方法判断其性别分化的时间。【方法】以黄羽肉鸡胚蛋为研究对象,孵化黄羽肉鸡胚蛋(温度37.8℃,相对湿度60%)。分别通过胚线观察法、生殖腺器官形态观察法、组织学形态学、分子生物学来判断鸡的性别分化期,试验重复3次。【结果】通过胚线观察法分析发现,在鸡胚孵化期第3天,可以通过血管分支的粗细和形态来辨别雌雄。通过生殖腺器官的观察,在孵化期第8天,能够明显关察到雄性性腺对称发育,雌性性腺则不对称发育。通过组织学形态鉴定,在孵化期第7~10天,观察到雄性性腺有类似于曲精细管的团索状结构出现,雌性性腺有皮髓结构出现,能够判定鸡胚性别分化期可能为胚胎孵化期第7天。通过分子生物学鉴定,孵化期第3~10天,观察到雄性个体有1条扩增条带,其大小是为550 bp左右,观察到雌性个体有2条扩增条带,其大小为550 bp和450 bp左右,因此判定性别分化期可能为孵化期第3天。【结论】综上判定鸡性别分化期约在胚胎孵化期第3~8天。

关键词：鸡胚孵化性别分化判定