以聚四氢呋喃二元醇、甲苯-2,4-二异氰酸酯和1,2,4-苯三甲酸酐为原料,合成了端羧基聚氨酯低聚物(PUIC);利用羧基与部分环氧基团反应,制备了一系列PUIC改性多官能环氧树脂(TGDDM-PUIC)。详细考察了改性树脂的粘...
Bio-manufacturing innovation lights up the future Repo... CNKI文献
Bio-manufacturing, a frontier interdisciplinary subject, is a promising field full of creative thinking and innovation [1].In order to create a platform for young scientists and students in the...
Liang Ma Huayong Yang 《Bio-Design and Manufacturing》 2023年02期 期刊
关键词: Bio-manufacturing / innovation / lights / up
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Quantitative characterization of filamentous fun... CNKI文献
Characterization of filamentous fungal regulatory elements remains challenging because of time-consuming transformation technologies and limited quantitative methods.Here we established a...
Peng-Lin Wei Jie Fan... 《Science China(Life Sciences)》 2023年04期 期刊
关键词: fungal / promoter / quantitative / characterization
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结直肠癌病人体力活动体验质性研究的Meta整合 CNKI文献
目的:系统评价结直肠癌病人参与体力活动的体验,为制定干预措施提供理论依据。方法:计算机检索PubMed、Embase、Web of Science、CLNAHL、Cochrane Library、中国知网、中国生物医学文献数据库(CBM)、万方和维...
Current progress in the development of prophylac... CNKI文献
Vaccines are essential public health tools and play an important role in reducing the burden of infectious diseases in the population. Emerging infectious diseases and outbreaks pose new challe...
Tingting Li Ciying Qian... 《Science China(Life Sciences)》 2023年04期 期刊
关键词: prophylactic / vaccine / therapeutic / vaccine
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一种硅烷封端聚氨酯的合成及其在密封胶制备中的应用 CNKI文献
设计了一种不同于以往同类型硅烷封端聚氨酯(SPU)预聚体的合成方案。以一种端—NCO硅烷和端—OH聚氨酯预聚体封端反应,得到硅烷封端聚氨酯预聚体。然后以此为基料,并添加催化剂和补强填料,通过配方筛选,制备了一...
Truncated glycoprotein E of varicella-zoster vir... CNKI文献
Varicella-zoster virus(VZV) is a highly infectious agent responsible for both varicella and herpes zoster disease. Despite high efficacy, there remain safety and accessibility concerns with the licen...
Tingting Chen Jie Sun... 《Science China(Life Sciences)》 2023年04期 期刊
关键词: varicella-zoster / virus / glycoprotein / E
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Dynamic carbon-nitrogen coupling under global change CNKI文献
Carbon-nitrogen coupling is a fundamental principle in ecosystem ecology. However, how the coupling responds to global change has not yet been examined. Through a comprehensive and systematic literat...
Shuli Niu Lei Song... 《Science China(Life Sciences)》 2023年04期 期刊
关键词: nitrogen / limitation / carbon-nitrogen / interaction
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Computer-aided engineering of CRISPR-Cas protein... CNKI文献
Dear editor.The remarkably diversified CRISPR-Cas systems in nature have provided unlimited valuable resources to develop genome editing tools that are revolutionizing the fields of biotechnolo...
Yangcan Chen Yanping Hu... 《Science China(Life Sciences)》 2023年04期 期刊
关键词: CRISPR / Computer-aided / engineering / of
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解聚凹凸棒土负载纳米Fe/Ni材料对水中2,4-二氯酚的脱氯降解... CNKI文献
采用球磨-冷冻工艺对凹凸棒土进行解聚处理,分别以解聚前后的凹凸棒土为载体负载纳米Fe/Ni,对比研究了所制复合材料的微观结构及对水中2,4-二氯酚(2,4-DCP)的脱氯降解性能,并考察了环境温度、溶液初始pH值对材料脱氯...
比率型荧光探针的合成及其对Al~(3+)识别性能研究 CNKI文献
为了进一步提高金属离子探针的选择性和灵敏性,以3,5-二氨基苯甲酸和2,4-二羟基苯甲醛为原料,合成了一种比率型金属离子探针L[3,5-二(2,4-二羟基)苯基亚氨基苯甲酸]。通过核磁、质谱和红外等方法对探针L的结构进行了...
The protective effects of Levilactobacillus brev... CNKI文献
Levilactobacillus brevis FZU0713, a potential probiotic previously isolated from the traditional brewing process of Hongqu rice wine, may have the beneficial effects on improving lipid metaboli...
Xiaoyun Fan Qing Zhang... 《Food Science and Human Wellness》 2023年05期 期刊
关键词: Levilactobacillus / brevis / FZU0713 / Lipid
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Flammulina velutipes polysaccharide-iron (Ⅲ) complex ... CNKI文献
Iron deficiency anemia(IDA)is a common nutritional problem, but traditional iron supplements cause many adverse reactions. Thus, the development of a novel iron supplement might be significant ...
Chenying Shi Chen Cheng... 《Food Science and Human Wellness》 2023年05期 期刊
关键词: Flammulina / velutipes / polysaccharide / Iron
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The effect of caloric restriction on genetical p... CNKI文献
Energy restriction is defined as reducing nutrient intake without dragging the organism into malnutrition. Energy restriction is preferred because it is a non-genetic intervention that increases life...
Mustafa Fevzi Karag?z A.Gül?in Sa?d??o?lu Celep 《Food Science and Human Wellness》 2023年05期 期刊
关键词: Caloric / restriction / Energy / restriction
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荷叶杆通过碳化、氢氧化钾和硝酸钾共同活化制备高性能的多孔碳材料。测试和分析表明,该材料是一种优良的超级电容器电极材料,与只用氢氧化钾活化的碳材料相比,具有更丰富的孔结构,比表面积可达1103 m~2·g~(...
基于CRISPR/Cas9方法构建‘沪农灵芝1号’基因编辑系统 CNKI文献
构建密码子优化的cas 9表达质粒pMD-EXP-cas 9,通过聚乙二醇(polyethylene glycol,PEG)介导转化灵芝(Ganoderma lucidum)菌株‘沪农灵芝1号’(‘Hunong No.1’)单核菌株L1,得到含有cas9完整表达盒的菌株L1-ca...
张志刚 张劲松... 《食用菌学报》 2023年02期 期刊
关键词: ‘沪农灵芝1号’ / 基因破坏 / 成簇的规律间隔的短回文重复序列及其相关蛋白9(CRISPR/Cas9) / 曲拉通X-100
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点云语义分割在许多与点云相关的应用程序中具有重要作用,特别是对于机载激光点云,精确的注释可大大扩展其在各种应用中的用途。然而,受限于传感器噪声、复杂的对象结构、不完整的点和不均匀的点密度,准确而有效的...
结球甘蓝通常被称为甘蓝,贵阳多叫莲花白,已成为“菜篮子”保供的主导品种之一,2021年贵阳市种植面积0.933余万hm~2。为提质增效,更好地满足市场需求,近年来,笔者根据贵阳低纬度、平均海拔1 100 m左右的山地气候...
该文对活体螃蟹的运动和大螯运作进行观察研究与尺寸测量,而后通过仿生学原理设计出一种八足、两钳组成的仿生机械螃蟹。通过建模构造出机械螃蟹的外形,并通过运动仿真验证机械螃蟹运动的可行性。结果表明,蟹类横向...
针对海量机器类通信(Massive Machine Type Communications, mMTC)场景下传统随机接入存在大量前导碰撞问题,提出了一种对终端侧和基站侧的接入改进算法,利用前导标记序列和固定位置随机接入终端的定时提前(Timing ...
关键词: 机器类通信(MTC) / 随机接入 / 定时提前 / 标记序列
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