1,006 results on '"李刚"'
Search Results
2. 基于核磁共振技术对亚麻籽油进行脂肪酸 组成检测与品质鉴别Fatty acid composition detection and quality identification of linseed oil based on nuclear magnetic resonance technology
- Author
-
李刚,康乐,何建昇,张松 LI Gang, KANG Le, HE Jiansheng, ZHANG Song
- Subjects
核磁共振技术;亚麻籽油;脂肪酸组成;品质鉴别 ,nmr ,linseed oil ,fatty acid composition ,quality identification ,Oils, fats, and waxes ,TP670-699 - Abstract
采用核磁共振(NMR)技术对山西省内生产的亚麻籽油进行脂肪酸组成检测及品质鉴别。首先运用气相色谱-质谱联用(GC-MS)法确认纯亚麻籽油和掺杂亚麻籽油脂肪酸组成的差异;然后通过核磁共振谱仪确认差异核磁共振氢谱(1H NMR)和碳谱(13C NMR)的特征峰,以快速判别亚麻籽油是否掺杂;最后,采用1H NMR法计算亚麻籽油中的脂肪酸含量,并与国标GC法进行对比。结果表明:与纯亚麻籽油相比,掺杂亚麻籽油中含有花生一烯酸和芥酸;通过花生一烯酸和芥酸1H NMR和13C NMR特征峰可以定性鉴别亚麻籽油是否掺杂;采用1H NMR法计算的亚麻籽油中亚麻酸含量与GC法一致。说明基于NMR技术对亚麻籽油脂肪酸组成进行检测,可以快速鉴别亚麻籽油品质。 The fatty acid composition and quality identification of linseed oil produced in Shanxi province were studied by nuclear magnetic resonance (NMR). Firstly, gas chromatography-mass spectrometry (GC-MS) method was used to detect and confirm the difference in fatty acid composition between pure linseed oil and adulterated linseed oil. Secondly, the characteristic peaks of the different fatty acids in the adulterated linseed oil were identified by the hydrogen nuclear magnetic resonance spectrum (1H NMR) and carbon nuclear magnetic resonance spectrum (13C NMR) so as to quickly determine whether the linseed oil was adulterated. Finally, the contents of fatty acids in linseed oil were quantitatively calculated by 1H NMR method and national standard GC method, respectively. The results showed that compared with the pure linseed oil, the adulterated linseed oil contained eicosenoic acid and erucic acid; the 1H NMR and 13C NMR characteristic peaks of eicosenoic acid and erucic acid could be used to qualitatively identify whether linseed oil was adulterated; the content of linolenic acid in linseed oil calculated by 1H NMR method was consistent with that by GC method. The detection of fatty acid composition in linseed oil based on NMR technology can quickly identify the quality of linseed oil.
- Published
- 2022
- Full Text
- View/download PDF
3. 砂轮修整对成形磨齿齿廓偏差的补偿
- Author
-
汪中厚, 耿直, 李刚, and 朱文敏
- Subjects
砂轮修整 ,成形磨齿 ,成形砂轮 ,齿形测量 ,齿廓偏差补偿 ,Mechanical engineering and machinery ,TJ1-1570 - Abstract
为了提高成形磨齿齿轮的精度,研究了一种通过修整砂轮廓形来补偿齿廓偏差的方法。首先说明了研究此方法的必要性,然后介绍了此方法的原理:用三次B样条曲线对齿形测量数据点进行拟合,求出拟合后的曲线方程,并在此基础上建立了真实的齿面方程求解模型,提出了针对齿廓偏差补偿的用于计算砂轮截形的假想齿面方程。基于同一个齿轮不同齿的测量数据,可得到不同的砂轮截形,为此将所有的砂轮截形组成线族,对线族中的离散点采用最小二乘法进行拟合,拟合之后的砂轮截形为补偿齿廓偏差的最佳截形。最后,通过实验试磨分析,加工出的齿轮经测量齿廓偏差由5级精度提高到了3级精度,并且同时补偿了齿廓倾斜偏差与齿廓形状偏差。
- Published
- 2015
- Full Text
- View/download PDF
4. 丙型肝炎病毒包膜蛋白E2的原核表达及鉴定
- Author
-
代志琰, 李刚, 徐启桓, 姚集鲁, 韩晓燕, 杨林, and 陈文思
- Subjects
丙型肝炎病毒 ,包膜蛋白 ,原核表达 ,Medicine (General) ,R5-920 - Abstract
【目的】构建丙型肝炎病毒(HCV)包膜蛋白E2基因的重组原核表达质粒,并获得E2蛋白的高效表达。【方法】通过RT-PCR法从HCV RNA阳性的血清标本中扩增出HCVE2区基因595bp,PCR产物分别经BamHⅠ和Hind Ⅲ双酶切后连接到经同样酶切的原核表达载体PET22b(+)上,转化大肠杆菌DH5α菌株,获得阳性重组质粒PETB,阳性质粒转化BL21(DE3),IPTG诱导表达,表达产物经SDS-PAGE和Westemblot鉴定。【结果】成功地克隆了HCVE2区基因,构建了其原核表达质粒,并在BL21(DE3)菌中表达HCVE2重组蛋白,Western blot显示表达蛋白具有抗原性。【结论】HCVE2重组蛋白的表达和鉴定为进一步了解HCV糖蛋白E2的功能及其与CD81二者的相互关系打下基础。
- Published
- 2006
5. 轻量化的 YOLOv8 锥桶检测算法研究.
- Author
-
李 旭, 李 刚, 李永明, 李 宁, and 梁海林
- Subjects
OBJECT recognition (Computer vision) ,COMPUTATIONAL complexity ,RACING automobiles ,ALGORITHMS ,SPINE - Abstract
Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
6. 基于三线性应变软化模型的综采工作面煤壁片帮深度解析预测.
- Author
-
迟国铭, 李刚, 张春会, and 徐刚
- Subjects
COAL mining ,INTERFACIAL friction ,DYNAMIC loads ,MECHANICAL models ,ANALYTICAL solutions - Abstract
Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
7. 南疆最大城市 2018―2022 年环境空气质量 变化特征分析.
- Author
-
段秀蓉, 仲军梅, 李 刚, 韩晓越, and 王江红
- Abstract
Copyright of Journal of Xinjiang University (Natural Science Edition) is the property of Xinjiang University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
8. 大径中厚壁管道坡口对 MAG 焊操作的影响.
- Author
-
陈鹏, 李哲, 高月, 杨晓冬, 董安, 潘国伟, 王志康, 李刚, 王金明, and 张正根
- Abstract
Copyright of Metal Working (1674-165X) is the property of Metal Working Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
9. 精神分裂症患者动态功能连接和 效应连接的功能磁共振成像研究.
- Author
-
刘文娟, 杨伟亮, 叶师敏, 牛慧明, 金毅琼, 李刚, 王刚平, 候宁, and 李洁
- Abstract
Copyright of Chinese Mental Health Journal / Zhongguo Xinli Weisheng Zazhi is the property of Chinese Mental Health Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
10. 基于RTK定位无人机的光电经纬仪姿态角测量精度检测方法
- Author
-
Yuan Guangfu, 袁光福, primary, Yu Chao, 于潮, additional, Wang Weichao, 王伟超, additional, Li Gangping, 李刚平, additional, and Wu Weiguo, 吴伟国, additional
- Published
- 2024
- Full Text
- View/download PDF
11. 基于邻域向量主成分分析图像增强的旁瓣弱光信号检测方法
- Author
-
Wang Zhengzhou, 王拯洲, primary, Wang Li, 王力, additional, Duan Yaxuan, 段亚轩, additional, Li Gang, 李刚, additional, and Wei Jitong, 魏际同, additional
- Published
- 2024
- Full Text
- View/download PDF
12. 管道内两相流流型特征对预混式两相雾化特性的影响.
- Author
-
肖景洋, 孙华中, 杨 勇, 李 刚, 赵江月, 王劲松, 朱小龙, and 张 平
- Abstract
Copyright of Fire Safety Science is the property of Fire Safety Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
13. 基于 Sentinel-1 影像追踪与迭代 SVD 技术提取 格陵兰 Petermann 冰川流速时序.
- Author
-
鞠琦, 李刚, 李超越, 冯小蔓, 陈晓, 杨治斌, and 陈卓奇
- Abstract
Copyright of Journal of Remote Sensing is the property of Editorial Office of Journal of Remote Sensing & Science Publishing Co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
14. 外地游客访问城市公园的时空 模式与影响机制研究 ——以广州市为例.
- Author
-
何夏萱, 袁奇峰, 卢俊文, and 李 刚
- Abstract
Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
15. 基于改进遗传算法的装配式渠道生产调度优化.
- Author
-
刘佳敏, 马玉薇, 李刚, and 姜伟
- Abstract
Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
16. 杉木、桉树、马尾松人工林非共生固氮量空间变异 与分布特征——以广西高峰林场为例.
- Author
-
高春莲, 汪珍川, 胡宝清, 梁清怡, 王家妍, 李 刚, and 孙 君
- Abstract
Copyright of Guangdong Agricultural Sciences is the property of South China Agricultural University, Guangdong Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
17. Ca3TiFe2O8 的高温热容和冶金性能研究.
- Author
-
曾俊杰, 李 刚, 陈 炼, 薛钰霄, and 吕学伟
- Abstract
Copyright of Iron Steel Vanadium Titanium is the property of Iron Steel Vanadium Titanium Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
18. 代谢功能障碍相关的脂肪性肝病治疗及热门靶点的药物研究进展.
- Author
-
熊晗晖, 姜金生, 蔡 霈, 谢惠平, 李跃忠, 盛 敏, 李 刚, 李国军, and 邓家国
- Abstract
Copyright of Practical Pharmacy & Clinical Remedies is the property of Editorial Department of Practical Pharmacy & Clinical Remedies and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
19. 中小跨径混凝土 3D 打印箱型拱桥数字化设计建造.
- Author
-
柏松林, 高诣民, 赵梓乔, 张 宁, 李 刚, 刘世龙, and 杨 敏
- Abstract
Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
20. 逐步回归法优化填料改性与助剂提高 烟草薄片浆料留着率的研究.
- Author
-
俞海军, 李 刚, 马扩彦, 陈昆燕, 周学政, 唐 杰, 杜红毅, 张玲玲, 周沫希, and 寇明钰
- Abstract
Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
21. 小麦-玉米轮作根茬燃烧热触杀防控土传病害的试验.
- Author
-
朱焕光, 李 刚, 刘超洁, 高飞, 刘新新, 潘晓慧, 李鹏飞, 张晓婷, 贺超, 刘亮, and 焦有宙
- Abstract
Soil-borne diseases of crops are becoming more and more serious due to the direct return of crop straw and root stubble and the application of many pesticides. In this study, the field experiment was carried out using the self-developed controlled combustion thermal contact killing device. The harmless disposal of stubble/straw was realized for the effective prevention and control of soil-borne diseases. The temperature distribution of flue gas was obtained in the smoke channel and along the grate direction. The temperature increasing level of the preheated air was also determined after passing along the heat exchanger under four conditions. The killing rate of pathogenic fungi and bacteria in soil was evaluated after thermotactic killing. The incidence rate, disease grade and disease index of maize plants were counted to separate and purify the stem base and root of maize plants, and then the morphology was identified preliminarily. Furthermore, the composition and number of microbial communities were determined by molecular biological identification, in order to evaluate and monitor the incidence of soil-borne diseases. Laboratory test results showed that the thermal contact temperature (117-167 ℃) and the air supply temperature (62-172 ℃) were regulated effectively, when the feed speed was 360, 720, 1 080 and 1 800 kg/h. The temperature distribution of flue gas in the smoke channel increased first and then decreased, and the maximum temperature of the furnace reached 479 ℃ during stable combustion, which was beneficial to the combustion efficiency at a high level. The isolation of fungi and bacteria in the thermal contact showed that the bacteria were more resistant to temperature than fungi. The killing rates of bacteria and fungi at 117 ℃ were 53.33% and 33.33%, respectively. Both killing rates reached more than 86% at 132 ℃. There was the relatively consistence at 153 ℃ and 167 ℃, where the killing rate reached 100%, indicating the deep killing. According to the killing rate of colonies combined with the soil organic matter and equipment energy efficiency, 1 080 kg/h was selected as the optimal treatment for the soil-borne diseases of maize after field experiment. The field experiment showed that the corn stem base of the thermal contact treatment group was normal bluish yellow, the root was white, and the ear leaves grew upward, compared with the control group. While the corn stem base of the control group was dark brown, soft and hollow, the root was black brown rot, and the ear leaves withered and drooped. Furthermore, Fusarium spp., Magnaporthiopsis spp., Gaeumannomyces spp., Alternaria spp., Trichoderma spp., and Talaromyces spp. were isolated from the stem base and root of maize. Among them, 44 strains of fungi were isolated from the control group, where only 3 strains were isolated after thermal contact. The fungus strain and speecies of microbial communities (such as Fusarium spp) that caused soil-borne diseases were significantly reduced for the better crop growth. The thermal contact can effectively slow down the soil-borne diseases in the continuous cropping of crops. This finding is of great significance to realize the green prevention and control of soil-borne diseases in crop continuous cropping. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
22. 粉煤灰对渠道用混凝土抗冻及抗冲磨性能的影响.
- Author
-
刘佳敏, 马玉薇, and 李 刚
- Abstract
Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
23. 关节腔冲洗联合液态浓缩生长因子注射治疗单侧颞下颌关节骨关节炎的初步研究.
- Author
-
李红光, 韩玮华, 吴训, 冯继玲, 李刚, and 孟娟红
- Published
- 2024
- Full Text
- View/download PDF
24. 针灸治疗绝经后骨质疏松症的研究进展.
- Author
-
屈佳乐, 刘江, 李念虎, and 李刚
- Abstract
Copyright of Chinese Journal of Osteoporosis is the property of Chinese Journal of Osteoporosis and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
25. 移动医疗在多囊卵巢综合征病人管理中的 醪 研究进展.
- Author
-
雷静, 李 刚, 刘科, 平燕茹, 李晶晶, and 贾竹敏
- Published
- 2024
- Full Text
- View/download PDF
26. 基于知识图谱和GPT模型的可靠性代码自动生成方法.
- Author
-
向历霓, 李刚, and 李海江
- Abstract
Copyright of Chinese Journal of Computational Mechanics / Jisuan Lixue Xuebao is the property of Chinese Journal of Computational Mechanics Editorial Office, Dalian University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
27. 基于级联式整流电源的恒流均压控制方法.
- Author
-
李刚, 董俊章, 何一卓, 李静, 李超臣, and 高喆
- Published
- 2024
- Full Text
- View/download PDF
28. 三级医院护士下背和下肢工作相关 肌肉骨骼疾患及其影响因素分析.
- Author
-
刘飞, 凌瑞杰, 贾宁, 刘爽, 孙敬智, 李刚, 刘移民, 杨燕, 张华东, 王如刚, 刘吉祥, 王忠旭, and 殷红
- Abstract
Copyright of Occupational Health & Emergency Rescue is the property of Occupational Health & Emergency Rescue Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
29. 下背痛相关因素的多中心病例对照研究.
- Author
-
杨燕, 符传东, 江迪蔚, 曾建诚, 黄思, 李刚, 陈凤琼, 刘移民, 王忠旭, 王致, and 贾宁
- Abstract
Copyright of Occupational Health & Emergency Rescue is the property of Occupational Health & Emergency Rescue Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
30. 脊柱侧弯病人肌少症发生情况及影响因素 分析.
- Author
-
姚璐璐, 李刚飞, 谢永红, and 易银芝
- Published
- 2024
- Full Text
- View/download PDF
31. 面向工业电热综合能源系统的蒸汽管存效应研究.
- Author
-
杨立勇, 李广山, 李 刚, 姜 楠, 董 帅, 蔡浩飞, and 林小杰
- Abstract
Copyright of Zhejiang Electric Power is the property of Zhejiang Electric Power Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
32. 沙门菌噬菌体YT90的分离鉴定及生物学特性分析.
- Author
-
李刚, 董雨豪, 黄昊, 孙千惠, and 刘永杰
- Abstract
[Objectives]The aim of this study was to isolate a bacteriophage with a broad host range targeting multidrug-resistant Salmonella Enteritidis and to investigate its biological characteristics. [Methods]Fifty-eight fecal samples were collected from a duck farm in Yantai, Shandong Province, and used for isolation of bacteriophages with S. Enteritidis of duck origin, sdc-11, as the host. Morphological feature, temperature and pH stability, optimal multiplicity of infection(MOI)and one-step growth curve of the bacteriophage were analyzed. Its lysis spectrum against 71 Salmonella strains of different serotypes, and its effects on the inhibition of biofilm formation and the removal of mature biofilm of Salmonella sdc-11 were tested. Also, the genome sequencing analysis was performed. [Results]A phage with a long tail was isolated and named YT90. The phage showed a good proliferation ability in the temperature range of 30 to 60 ℃ and within the pH value range of 4 to10, the optimal MOI was 10-5, the latent period was 10 min, the lysis period was 90 min, and the burst size was 278 PFU per infected cell. And 66.7%(14/21)of S. Enteritidis, 66.7%(28/42)of S. Typhimurium and 75.0%(3/4)of S. Pullorum could be lysed by YT90. In 96-well cell plates, the YT90 showed considerable potential in preventing the biofilm formation and clearing the mature biofilm of Salmonella sdc-11. Whole genome analysis showed that the total length of the YT90 genome was 121 240 bp, which did not contain the known virulence factors and drug-resistance related genes, and did not encode integrase. The phylogenetic tree based on the terminase family protein showed that YT90 was closely related to the Salmonella phage GRNsp50 and belonged to the genus Jerseyvirus in the Guernseyvirinae subfamily. [Conclusions]A lytic phage YT90 was isolated from fecal samples of duck, which could lyse different serotypes of Salmonella with strong tolerance, short latent period and large burst size. This phage exhibits excellent application potential in the prevention and treatment of Salmonella infection. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. Al/Fe2O3铝热剂粉尘着火敏感性.
- Author
-
李 刚, 马艳英, 刘宗阳, and 南相莉
- Abstract
In order to determine the ignition characteristics of thermite, the ignition sensitivity of four layered and cloud Al/Fe2O3 thermite with mass ratio of Al and Fe2O3 ( 1∶4, 1∶3, 1∶2, 1∶1) was studied by using the minimum ignition temperature (MIT) and minimum ignition energy (MIE) test device combined with TG‑DSC method. The results show that the MIT of dust layer and dust cloud for 4 kinds of matching samples exceed the conventional test range specified in relevant standards, the triggering temperature of thermite with the mass ratio of 1∶3 in the air is 888 ℃ and the activation energy is 248. 49 kJ/mol, indicating that thermite reaction is not easy to trigger. The MIE of Al/Fe2O3 dust cloud with the same mass ratio is much higher than that of the dust layer, and the minimum MIE of the laminar is 0. 7 J, indicating a higher ignition sensitivity. This is because Fe2O3 acts as an inerting agent in the reaction within the dust cloud state, and provides active oxygen species for the reaction within the dust layer state. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. 大肠杆菌耐药基因 TD-PCR 检测方法的建立及应用.
- Author
-
潘永, 王可人, 李婷, 杨莉, 李刚, 张亚楠, and 徐景峨
- Abstract
Copyright of Chinese Journal of Preventive Veterinary Medicine / Zhongguo Yufang Shouyi Xuebao is the property of Chinese Journal of Preventive Veterinary Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
35. 寒区隧道围岩温度场分布特征及影响因素分析.
- Author
-
李 刚 and 钟小春
- Abstract
Copyright of Journal of Architecture & Civil Engineering is the property of Chang'an Daxue Zazhishe and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
36. 耐低温液态铝电解电容器开发方法的研究.
- Author
-
李 刚, 王 婷, 黄远彬, 贾 明, and 艾 亮
- Abstract
Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
37. 快开盲板电测应力实验及有限元分析.
- Author
-
朱小丹, 刘诗琳, 黄琼, 赵欣阳, 李刚, and 魏泳涛
- Abstract
Copyright of Natural Gas & Oil is the property of Editorial Department of Natural Gas & Oil and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
38. 碳纳米管膜层间增强增刚碳纤维增强树脂基 复合材料的压缩强度与导热性能.
- Author
-
朱再斌, 凌辉, 杨小平, 李刚, and 王超
- Abstract
Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
39. 葛根素对肉牛生长性能、屠宰性能 和血清抗氧化指标的影响.
- Author
-
罗莉宁 and 李 刚
- Abstract
The aim of this experiment was to study the effects of puerarin on the growth performance, slaughtering performance and serum antioxidant indexes of beef cattle. A total of 80 finishing Simmental crossbred beef cattle were selected and stochastically divided into 4 group. The control group was fed a based diet and groups 1, 2, 3 were fed basal diet supplemented with 300, 600, 900 mg/kg of puerarin, and the experimental period was 60 days. The results showed that, the final body weight and average daily weight gain of beef cattle in test groups 2 and 3 were significantly higher than the control group (P< 0.05), and the feed-to-weight ratio was significantly lower than the control group (P<0.05), the preslaughter live weight, carcass weight, and ocularis muscle area of beef cattle were significantly higher than the control group (P<0.05). The activities of serum glutathione peroxidase and superoxide dismutase of beef cattle were significantly higher than the control group (P<0.05), and the total antioxidant capacity was significantly up-regulated (P<0.05), and malondialdehyde content was significantly reduced (P< 0.05). Serum catalase activity was significantly increased (P<0.05) in beef cattle in group 2 and group 3. In conclusion, the addition of puerarin in the diet of beef cattle can improve the growth performance, slaughter performance and serum antioxidant enzyme activity, and considering the economic benefits. The recommended addition amount of puerarin in the diet is 600 mg/kg. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
40. 行列式点过程采样的文本生成图像方法.
- Author
-
李晓霖, 李 刚, 张恩琪, and 顾广华
- Subjects
- *
GENERATIVE adversarial networks , *POINT processes - Abstract
Objectives: In recent years, a great breakthrough has been made in the text generation image problem based on generative adversarial networks (GAN). It can generate corresponding images based on the semantic information of the text, and has great application value. However, the current generated image results usually lack specific texture details, and often have problems such as collapsed modes and lack of diversity. Methods: This paper proposes a determinant point process for generative adversarial networks(GAN-DPP) to improve the quality of the generated samples, and uses two baseline models, Stack-GAN++ and ControlGAN, to implement GAN-DPP. During the training, it uses determinantal point process kernel to model the diversity of real data and synthetic data and encourages the generator to generate diversity data similar to the real data through penalty loss. It improves the clarity and diversity of generated samples, and reduces problems such as mode collapse. No extra calculations were added during training. Results: This paper compares the generated results through indicators. For the inception score, a high value indicates that the image clarity and diversity have improved. On the Oxford-102 dataset, the score of GAN-DPP-S is increased by 3.1% compared with StackGAN++, and the score of GAN-DPPC is 3.4% higher than that of ControlGAN. For the CUB dataset, the score of GAN-DPP-S increased by 8.2%, and the score of GAN-DPP-C increased by 1.9%. For the Fréchet Inception Distance score, the lower the value, the better the quality of image generation. On the Oxford-102 dataset, the score of GANDPP-S is reduced by 11.1%, and the score of GAN-DPP-C is reduced by 11.2%. For the CUB dataset, the score of GAN-DPP-S is reduced by 6.4%, and the score of GAN-DPP-C is reduced by 3.1%. Conclusions: The qualitative and quantitative comparative experiments prove that the proposed GAN-DPP method improves the performance of the generative confrontation network model. The image texture details generated by the model are more abundant, and the diversity is significantly improved. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
41. 连通设备粉尘爆炸泄压面积确定方法.
- Author
-
李 刚, 周 雷, 张晓宇, and 张 凯
- Abstract
The relevant standards at home and abroad offer the calculation method for explosion venting area(EVA) of individual equipment, but there is a notable absence of guidelines for interconnected equipment. By means of FLACS numerical simulation, taking corn starch as the explosion medium, the reduced explosion pressure(REP) and rate of pressure rise in the connected equipment are simulated and explored. The results show that when the length of the pipe is fixed, the maximum REP in the booster vessel decreases with the increasement of the EVA. When the same EVA is set, the maximum REP in the booster vessel increases with the increase of the pipe length, and the time to reach the maximum REP value also delays. The minimum safe EVA required for the booster vessel is larger than that of the single equipment with same size, indicating that the calculation formula of the EVA of the single equipment is unreliable for the connected equipment. Through numerical fitting, the EVA calculation formula for single equipment in the standard was modified to meet the requirement of connected equipment. The research results provide reference for explosion-proof design for connected system. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
42. 过渡金属催化卤代芳烃合成苯胺类化合物的研究进展.
- Author
-
宋戈洋, 薛东, and 李刚
- Abstract
Copyright of University Chemistry is the property of Peking University, College of Chemistry & Molecular Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
43. 融合改进A*算法和DWA算法的 全局动态路径规划.
- Author
-
董晓东, 李刚, 宗长富, 李永明, 李云龙, and 李祥
- Abstract
Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
44. 磨头磨削镍基高温合金仿真.
- Author
-
黎柏春, 李晓坤, 李刚, 李治, 何振鹏, and 闫方超
- Abstract
Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
45. 麻醉诱导前不同剂量盐酸戊乙奎醚对老年腹腔镜胆囊切除术患者氧化应激和血清S100β、NSE、BDNF的影响.
- Author
-
李 刚, 何文胜, 王 凯, 田杰利, 史天伍, and 张 军
- Abstract
Objective: To investigate the effects of different doses of penehyclidine hydrochloride before anesthesia induction on oxidative stress, serum S100β, neuron-specific enolase(NSE) and brain-derived neurotrophic factor(BDNF) in elderly patients undergoing laparoscopic cholecystectomy(LC). Methods: 150 elderly patients who underwent elective LC in our hospital from January 2019 to December 2022 were divided into high dose group(penehyclidine hydrochloride 0.015 mg/kg), middle dose group(penehyclidine hydrochloride 0.01mg/kg) and low dose group(penehyclidine hydrochloride 0.005 mg/kg) according to the random number table method,with 50 cases in each group.The hemodynamic indexes [heart rate(HR), mean arterial pressure(MAP)], oxidative stress indexes [superoxide dismutase(SOD), malondialdehyde(MDA) and total antioxidant capacity(T-AOC)], serum levels of S100β, NSE and BDNF, incidence of postoperative cognitive dysfunction(POCD) and incidence of adverse reactions were compared among three groups. Results:HR and MAP in middle dose group were lower than those in low dose group and high dose group from 5 min after laryngeal mask placement(T1) to 10 min after stopping pneumoperitoneum(T4)(P<0.05). The MDA in middle dose group was lower than that in low dose group and high dose group, and the SOD and T-AOC were higher than those in low dose group and high dose group(P<0.05). S100β and NSE in middle dose group were lower than those in low dose group and high dose group, and BDNF was higher than that in low dose group and high dose group(P<0.05). There was no significant difference in the incidence of adverse reactions among three groups(P>0.05). The incidence of POCD in middle dose group was lower than that in low dose group and high dose group(P<0.05). Conclusion: The application of 0.01 mg/kg penehyclidine hydrochloride before anesthesia induction in elderly LC patients, which can effectively maintain hemodynamic stability and reduce the degree of oxidative stress and brain injury. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
46. 2010~2021 年新疆库鲁斯台草原动态遥感监测变化分析.
- Author
-
刘亮, 彭建, 李刚勇, 韩万强, 刘玉佳, 关靖云, 刘程才, and 郑江华
- Abstract
Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
47. 混合相似性度量的仪表询价 电子表格结构识别.
- Author
-
徐传运, 马莹丽, 李 刚, 舒 涛, and 李星光
- Abstract
Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
48. 教育现象学视域下教师的教育智慧养成机制研究.
- Author
-
郑曼瑶, 李树英, and 李刚
- Abstract
Copyright of Teacher Education Research is the property of Teacher Education Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
49. 泄漏检测和修复技术在特种设备检验上的应用.
- Author
-
李 刚
- Abstract
Copyright of Mechanical & Electronic Control Engineering is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
50. 刍议韩愈《师说》对高校青年教师师德师风建设路径的启示.
- Author
-
李刚
- Abstract
Copyright of Journal of Hubei Open Vocational College is the property of Journal of Hubei Open Vocational College Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.