期刊文献+
共找到294篇文章
< 1 2 15 >
每页显示 20 50 100
基于深度学习的无人机巡检图像销钉故障检测 被引量:14
1
作者 宁柏锋 《计算机测量与控制》 2019年第11期25-29,共5页
随着经济和社会的发展,发电量和用电量逐年上升;安全的电力保障关系到国计民生,在常年的使用过程中,由于电力传输的输电线路受到外界环境的影响,使得输电线路部件容易出现不同程度的破损,其中销钉是固定螺母的关键零件,销钉的脱落会导... 随着经济和社会的发展,发电量和用电量逐年上升;安全的电力保障关系到国计民生,在常年的使用过程中,由于电力传输的输电线路受到外界环境的影响,使得输电线路部件容易出现不同程度的破损,其中销钉是固定螺母的关键零件,销钉的脱落会导致各部件之间连接的不稳定,这给输电网络的安全运行带来了极大的隐患;随着深度学习技术在计算机视觉领域中的应用,使得机器自动识别销钉这一输电线路系统中的微小部件成为现实;采用Faster R-CNN算法对无人机巡检图像中的销钉脱落故障进行识别,并讨论了不同分类器对识别结果的影响,然后对ACF+Adaboost、Hough+LSD和Faster R-CNN检测方法进行比较;实验结果表明,基于Faster R-CNN的目标检测方法对于输电线路中销钉脱落故障的识别率可达到96%,同时对正常销钉的识别率最高可达98%。 展开更多
关键词 输电线路 无人机巡检 销钉 故障检测 深度学习
下载PDF
肝移植术后的营养支持策略 被引量:11
2
作者 朱建平 张同琳 +1 位作者 袁炯 张宗明 《中国普通外科杂志》 CAS CSCD 2007年第8期741-743,共3页
目的探讨制定有效的术后营养支持治疗方法,以促进其术后恢复。方法对48例肝移植术后患者采用不同营养支持方式。患者胃肠功能恢复后,尽早开始EN支持,辅以白(清)蛋白强化的PN支持;对重度营养不良者,也以EN为主,辅以重组生长激素(rhGH)+... 目的探讨制定有效的术后营养支持治疗方法,以促进其术后恢复。方法对48例肝移植术后患者采用不同营养支持方式。患者胃肠功能恢复后,尽早开始EN支持,辅以白(清)蛋白强化的PN支持;对重度营养不良者,也以EN为主,辅以重组生长激素(rhGH)+谷氨酰胺(Gln);如无法恢复EN,则以TPN+rhGH+Gln及清蛋白强化支持治疗。结果所有患者未发生与营养支持有关的并发症,顺利渡过围手术期。 展开更多
关键词 肝移植 营养支持 手术后并发症/预防与控制 生长激素 谷氨酰胺
下载PDF
Movement Differential Equation of Seed Roller which Has Been Installed Stake Accelerator on the Roll Box of Gin Machine 被引量:7
3
作者 Sarimsakov Akramjon Muradov Rustam +1 位作者 Umarov Akmal Kurbanov Dilmurat 《Engineering(科研)》 2018年第8期521-529,共9页
In the article stake accelerator has proposed on the side of the roll box in order to increase the productivity of the gin machine. The effect to the raw material of the proposed stakes was studied. Movement different... In the article stake accelerator has proposed on the side of the roll box in order to increase the productivity of the gin machine. The effect to the raw material of the proposed stakes was studied. Movement differential equation of the seed roller was made up and necessary graphics were taken based on laws. 展开更多
关键词 The Cotton gin SEED Fiber Saw Gridiron ROLL Box SEED ROLLER Speed Quality Efficiency Productivity Equation Pressure Density Strength
下载PDF
GJY-Ⅱ 型灌浆自动记录仪在 GIN 法灌浆中的应用 被引量:3
4
作者 王英贤 张凤玲 《长江科学院院报》 CSCD 北大核心 1998年第1期51-53,共3页
介绍了GJY-Ⅱ型灌浆自动记录仪在我国首次应用于GIN法灌浆中的情况及其软、硬件结构。
关键词 灌浆 软件 记录仪 施工控制 帷幕灌浆
下载PDF
非豆科植物固氮菌—Frankia的基因组研究进展 被引量:8
5
作者 王树凤 陈益泰 《土壤》 CAS CSCD 北大核心 2005年第4期382-387,共6页
弗兰克氏菌(Frankia)能够与大约25个属的非豆科植物共生进行结瘤固氮,在生态系统中具有重要意义。本文对Frankia的基因组学研究进展进行了综述,包括Frankia基因组的结构、功能及其表达特点,同时比较了来源于不同菌株的固氮基因的差异,... 弗兰克氏菌(Frankia)能够与大约25个属的非豆科植物共生进行结瘤固氮,在生态系统中具有重要意义。本文对Frankia的基因组学研究进展进行了综述,包括Frankia基因组的结构、功能及其表达特点,同时比较了来源于不同菌株的固氮基因的差异,并提出今后的发展趋势。 展开更多
关键词 弗兰克氏菌 固氮酶基因簇 谷氨酰胺合成酶基因 RRNA基因 质粒
下载PDF
基于Go语言的线上辩论系统
6
作者 孔嘉怡 邢路 《工业控制计算机》 2024年第1期155-158,共4页
随着互联网的高速发展,人们传输消息的成本越来越低,导致网络上的信息杂乱无章。线上辩论系统借助互联网的便捷性,对事件进行广泛细致的讨论,可以为用户提供一个明理辨是非的平台。系统主要由论题、发现和个人中心三大模块构成。论题模... 随着互联网的高速发展,人们传输消息的成本越来越低,导致网络上的信息杂乱无章。线上辩论系统借助互联网的便捷性,对事件进行广泛细致的讨论,可以为用户提供一个明理辨是非的平台。系统主要由论题、发现和个人中心三大模块构成。论题模块包含了查看所有论题、查看发布的论题列表等功能;发现模块包含了查看系统公告、发布动态等功能;个人中心模块包含了修改个人信息、提交意见反馈等功能。系统后端基于Go语言,使用了Gin框架,很大程度上提高了系统的开发效率;数据库基于MySQL,在后端开发过程中使用了XORM框架对数据进行操作,该框架简单、灵活,使开发变得更加容易;前端基于Vue,使用了高性能、冷启动、按需编译的Vite工具进行构建,减少了开发等待的时间。整个系统的功能较为全面,经整体测试,系统运行流畅不卡顿,稳定性强,并且具有良好的高效性和便捷性,能够满足大部分用户的需求。 展开更多
关键词 线上辩论系统 gin VITE MYSQL
下载PDF
国际水电项目GIN参数设计方法研究
7
作者 宋建威 《四川水力发电》 2024年第4期17-21,共5页
在Lombardi博士的GIN理论基础上,结合世界大坝委员会的坝基设计公报及以往国际水电站工程采用GIN灌浆取得的经验,依托科特迪瓦波波里水电站土石坝帷幕灌浆的实践,阐述了基于坝基岩石质量与压水试验成果的GIN设计值的取值方法,提出了P_(m... 在Lombardi博士的GIN理论基础上,结合世界大坝委员会的坝基设计公报及以往国际水电站工程采用GIN灌浆取得的经验,依托科特迪瓦波波里水电站土石坝帷幕灌浆的实践,阐述了基于坝基岩石质量与压水试验成果的GIN设计值的取值方法,提出了P_(max)、V_(max)值设计时需要考虑的两种边界条件,并通过理论公式计算及实践经验提出了浆液扩散半径的安全保证系数。 展开更多
关键词 国际工程 水电站 土石坝 gin 帷幕灌浆 稳定浆液 设计方法
下载PDF
Investigation of the Ginning Process on ДП Series Saw Gin Stands 被引量:6
8
作者 Khamit Axmedxodjayev Akmal Umarov Kamola Ortiqova 《Engineering(科研)》 2019年第8期523-530,共8页
The article describes the research process of ginning, conducted at the stand of the saw gin of the DP series. The analysis of the roll box of saw gins of different companies was carried out, given the results of stud... The article describes the research process of ginning, conducted at the stand of the saw gin of the DP series. The analysis of the roll box of saw gins of different companies was carried out, given the results of studies to determine the speed and density of the seed roll in the roll box of the saw gin. A diagram is given for the dependence of the speed of the feed rollers on the incoming signal. 展开更多
关键词 SEED COTTON ginning of COTTON SAW gin Stand ROLL BOX SEED ROLL Profile of the ROLL BOX Speed of the Feed ROLLS Density of the SEED ROLL
下载PDF
Gin+GORM通用MIS系统设计
9
作者 李兴福 《科学与信息化》 2024年第19期40-43,共4页
文章旨在介绍一种基于Go语言中的Gin和GORM框架开发的通用管理信息系统(Management Information System,MIS)的设计与实现。MIS系统在各种组织中发挥着关键作用,用于处理、管理和分析各种信息,通过Gin和GORM这两个流行的开源框架,可以... 文章旨在介绍一种基于Go语言中的Gin和GORM框架开发的通用管理信息系统(Management Information System,MIS)的设计与实现。MIS系统在各种组织中发挥着关键作用,用于处理、管理和分析各种信息,通过Gin和GORM这两个流行的开源框架,可以快速搭建一个稳定、高效的MIS系统,以满足企业管理信息系统的需求,并提供友好的用户界面和可靠的数据管理。该方案可针对不同的业务需求进行快速定制和扩展功能,具有高度可扩展性和灵活性。 展开更多
关键词 gin GORM MIS系统
下载PDF
碱性蛋白酶水解小麦面筋蛋白制取谷氨酰胺肽的研究 被引量:8
10
作者 马洪龙 韩飞 +1 位作者 李爱科 陈光 《粮油食品科技》 北大核心 2014年第1期54-57,共4页
采用单因素和正交实验研究碱性蛋白酶Alcalase酶解小麦蛋白获得高谷氨酰胺肽的优化工艺。使用氨基酸分析仪测定肽中有效谷氨酰胺含量。结果表明:碱性蛋白酶Alcalase水解小麦面筋蛋白的最适条件为pH 8.0,温度70℃,酶浓度4%,底物浓度7%,... 采用单因素和正交实验研究碱性蛋白酶Alcalase酶解小麦蛋白获得高谷氨酰胺肽的优化工艺。使用氨基酸分析仪测定肽中有效谷氨酰胺含量。结果表明:碱性蛋白酶Alcalase水解小麦面筋蛋白的最适条件为pH 8.0,温度70℃,酶浓度4%,底物浓度7%,反应时间150 min。在此条件下,酶解产物中的有效谷氨酰胺含量为17.65%,占酶解样品中Glx(Gln与Glu之和,含量22.83%)的77.31%,三氯乙酸氮溶指数(TCA-NSI)为77.86%,蛋白含量76.03%,游离氨基酸含量2.06%,说明酶解产物的有效Gln含量高,且肽含量高。 展开更多
关键词 碱性蛋白酶 小麦面筋蛋白 谷氨酰胺 酶解
下载PDF
The Mathematical Simulation of Brush Drums in a Dual Saw Cylinder Chamber Gin for the Purpose of Increasing the Quantity of Captured Cotton Fiber from Saw 被引量:5
11
作者 Azizov Shuhrat Mamatovich Karimov Abdusamat Peter Arras 《World Journal of Mechanics》 2013年第1期58-61,共4页
An analysis of the efficiency of the ginning of cotton fibers with two saw cylinders has been carried out. In comparison to a one-cylinder machine, the 2 cylinder approach can help to preserve the natural characterist... An analysis of the efficiency of the ginning of cotton fibers with two saw cylinders has been carried out. In comparison to a one-cylinder machine, the 2 cylinder approach can help to preserve the natural characteristics of cotton fiber and seeds. This technology allows economizing electricity and decreasing damage to fiber and also increases the productivity of the machine. 展开更多
关键词 gin SAW Cotton BRUSH DRUM Fiber SAW CYLINDER
下载PDF
Definition of Increasing the Fibre Capturing Surface of Saw Teeth of Cotton Ginning Machine through Mathematic Modelling 被引量:5
12
作者 Azizov Shuhrat Mamatovich Karimov Abdusamat 《World Journal of Mechanics》 2011年第3期122-126,共5页
Theoretical and the experimental researches executed in Uzbekistan and abroad explored some ways of a substantiation of a rational profile of a tooth of a saw and its fibre capturing ability. Despite that, untill now,... Theoretical and the experimental researches executed in Uzbekistan and abroad explored some ways of a substantiation of a rational profile of a tooth of a saw and its fibre capturing ability. Despite that, untill now, optimum parameters of a saw gin which provides high quality ginning without harming the quality of cotton fibre have not been found. Considering the stated above in the given job the influence of the changed form of saw teeth on fibre-capturing area is examined. The analytical formulas for the additional area promoting to double the fibre capture quantity by saw teeth are received. 展开更多
关键词 Factor of PROPORTIONALITY RADIUS of a SAW FIBRE gin Teeth Linear Speed New Profile
下载PDF
京族民间文艺与自然生态 被引量:7
13
作者 陈丽琴 《钦州学院学报》 2012年第1期1-5,共5页
京族民间文艺的生成、发展与自然生态环境之间有着密切关系。京族民间文艺作品体现了人们独特的生态意识,自然环境对京族民间口承文艺、民间舞蹈、服饰艺术以及民间工艺的产生与传承具有深刻的影响,造就了京族民间文艺的独特风格,没有... 京族民间文艺的生成、发展与自然生态环境之间有着密切关系。京族民间文艺作品体现了人们独特的生态意识,自然环境对京族民间口承文艺、民间舞蹈、服饰艺术以及民间工艺的产生与传承具有深刻的影响,造就了京族民间文艺的独特风格,没有京族地区独特的生态环境,其民间文艺也就失去所赖以产生的土壤。 展开更多
关键词 京族 民间文艺 自然生态
下载PDF
Improving Fiber Quality Output by Improving the Roll Box of the Gin Saw
14
作者 Sarimsakov Akramjon Isroilov Sardorbek Komilov Shukhratjon 《Engineering(科研)》 CAS 2023年第4期261-268,共8页
It has been proven that the increase in the productivity of the gin machine necessarily occurs along with the increase in the density of the raw material. However, with increasing density, productivity increases up to... It has been proven that the increase in the productivity of the gin machine necessarily occurs along with the increase in the density of the raw material. However, with increasing density, productivity increases up to a certain limit, and then productivity begins to decrease. In this article, the authors analyzed the scientific work on improving the quality of fiber. 展开更多
关键词 COTTON Fiber Saw gin Density SAW DRUM Seed Husk SEED Fluff
下载PDF
Theoretical and Practical Studies of Determining the Force of the Lifting-Lowering of the Roll Box
15
作者 Usmonov Shuxratjon Kamoljonovich 《Engineering(科研)》 CAS 2023年第1期47-57,共11页
The lifting and lowering mechanism of the roll box of the saw gin, being an integral part of the ginning process, is used when starting the electric motor of the saw cylinder until its rated speed is reached to preven... The lifting and lowering mechanism of the roll box of the saw gin, being an integral part of the ginning process, is used when starting the electric motor of the saw cylinder until its rated speed is reached to prevent an increase in the load current on it, as well as to start the ginning process. The article defines the kinematics of the movement, and also studies the regularity of the movement of the roll box of the saw gin when lifting it with the help of a pneumatic drive. The kinematics of the roll box movement was determined through experimental studies. Knowing the equation of motion, using the second-order Lagrange equation, the regularity of the change in the lifting force of the roll box was determined. Here the system is closed, its degree of freedom is equal to one. The angle of rotation of the roll box is taken as a generalized coordinate. Numerical results were obtained using the Matlab software environment. The theoretical analysis and graphs for determining the lifting force of the roll box are presented. To study the kinematics of lifting the roll box, a method and a test bench have been developed. According to him, when the roll box was raised, its movement was recorded on video, the image was processed using the After Effect and CorelDraw programs, and the movement of the rod attachment point to the roll box was determined. And also the equation for changing the angle of rotation of the roll box is determined using the Matlab Curve Fiting program. 展开更多
关键词 Saw gin Roll Box Pneumatic Cylinder ROD Angular Velocity Angular Acceleration Gravity Forces Driving Force Moment of Inertia Function
下载PDF
Study of Cotton Seeds as a Processing Material
16
作者 Akhmedxodjayev Khamit Tursunovich Tadjibayev Muhammad Ahmadjanovich +2 位作者 Sharipov Khayrullo No’monjanovich Juramirza Abdiramatovich Kayumov Abduraximov Komiljon Karimovich 《Engineering(科研)》 2023年第11期782-791,共10页
The purpose of this research is to improve the qualitative and quantitative indicators of fiber, lint and seeds by improving the technology of preparing cotton seeds for processing. The state of the seeds after the gi... The purpose of this research is to improve the qualitative and quantitative indicators of fiber, lint and seeds by improving the technology of preparing cotton seeds for processing. The state of the seeds after the gin was studied and their division into fractions according to the degree of pubescence was recommended, the probabilities of the seeds emerging from the gin with varying degrees of pubescence were investigated, the geometric sizes and shapes of cotton seeds were studied. It has been established that when seeds come out of gin, they have different pubescence. The conditional movement of seeds without separation from the surface has been determined;found a formula describing the movement of seeds without detaching from the surface;the movement of seeds in a micro-flight is determined;the sizes of the cells of the mesh surface were determined as a function of d_c, α and on the speed of seed movement. The aim of the research work is to increase the yield of cotton fiber by improving the processing technology of germinated seeds, to improve the quality indicators of seeds and lint. In order to achieve this goal, a mesh surface device was created to sort the seeds into fractions. Sorting technology was developed on this device and operating modes were determined. In addition, the law of surface distribution of the fractions separated from the cotton stream moving along the surface of the net was determined, and based on the results of practical and theoretical research, a mode of sorting of cotton seeds was developed. 展开更多
关键词 FIBER LINT Raw Cotton ginning Saw gin Working Chamber Raw Grate LINTING Cotton Seeds
下载PDF
基于GC-MS和电子舌的金酒风味物质分析
17
作者 曹红 李红君 +9 位作者 杨闻 刘涛涛 赵润 王喆 周慧 蔡凯 蒲鹏飞 周童 熊亚青 李澜奇 《酿酒科技》 2024年第7期131-140,144,共11页
为分析比较传统干金酒和现代精酿金酒的感官风味差异,采用气相色谱-质谱联用(GC-MS)和电子舌技术,结合感官评价和雷达图、主成分分析等统计学方法分析金酒的差异性。GC-MS结果表明,6个金酒样品中共鉴定出92个挥发性成分,各样品分别检测... 为分析比较传统干金酒和现代精酿金酒的感官风味差异,采用气相色谱-质谱联用(GC-MS)和电子舌技术,结合感官评价和雷达图、主成分分析等统计学方法分析金酒的差异性。GC-MS结果表明,6个金酒样品中共鉴定出92个挥发性成分,各样品分别检测出高匹配挥发性物质50个、44个、49个、45个、46个、61个,其相对含量分别占总含量的70.09%、68.53%、81.31%、70.99%、53.44%和76.49%;烯类成分、醇类化合物为样品的主要挥发性成分,还有酯类、醛类、酮类、酚类、酸类等其他类成分;同时,6个金酒存在共性和特异性挥发性成分,共性成分有16个(芳樟醇和D-柠檬烯等),特异性成分分别为3个、0个、10个、3个、5个、4个;电子舌结果显示,橡木桶陈酿对金酒的滋味影响较大;感官评价结果表明,干金酒和现代精酿金酒风味轮廓存在差异,精酿工艺金酒与传统干金酒相比,大量添加杜松子和芫荽籽外的其他原料改变了金酒香气轮廓,并通过添加干金酒很少用到的原料,感官风味更丰富、鲜明。通过分析不同金酒风味物质的差异,为饮料酒的开发提供了参考。 展开更多
关键词 金酒 GC-MS 电子舌 风味物质 多元统计分析
下载PDF
广西京族老年人的肥胖与超重现状
18
作者 高新颖 宇克莉 +3 位作者 刘艳霞 张兴华 包金萍 郑连斌 《天津师范大学学报(自然科学版)》 CAS 北大核心 2024年第1期75-80,共6页
采用随机取样方法调查了226例京族老年人(男性99例,女性127例)的15项体质指标,研究京族老年人的肥胖与超重情况.结果表明:京族老年男性和女性的体质量、身高、瘦体质量、基础代谢率、身体水分和体表面积均与年龄呈负相关,且60-岁组的指... 采用随机取样方法调查了226例京族老年人(男性99例,女性127例)的15项体质指标,研究京族老年人的肥胖与超重情况.结果表明:京族老年男性和女性的体质量、身高、瘦体质量、基础代谢率、身体水分和体表面积均与年龄呈负相关,且60-岁组的指标值最大.按照BMI分型,京族老年男性的超重率为38.4%,肥胖率为16.2%,老年女性的超重率为44.1%,肥胖率为18.1%.按照PBF分型,京族老年男性和女性的肥胖率分别为23.2%和49.6%.按照腰围分型,京族老年男性的中心型肥胖前期率为22.2%,中心型肥胖率为28.3%,老年女性的中心型肥胖前期率为23.6%,中心型肥胖率为37.0%.按照腰臀比分型,京族老年男性和女性的中心型肥胖率分别为51.5%和91.3%.京族老年人的肥胖率较高,应该引起足够重视.京族老年人的肥胖和超重是遗传、行为和环境多因素共同作用的结果. 展开更多
关键词 京族 老年人 肥胖 BMI PBF 腰臀比
下载PDF
国际水电站GIN稳定浆液配比设计方法研究
19
作者 宋建威 黄红占 《水利水电施工》 2024年第2期54-56,共3页
在GIN灌浆理论中,浆液是单一配比的稳定浆液,浆液在2h内的沉淀率应小于5%。在高压力灌浆条件下,稳定浆液可以避免在岩石裂隙中出现水浆分离的现象,更好地保证灌浆质量。本文在Lombardi博士研究成果的基础上,结合以往现场浆液试验与实践... 在GIN灌浆理论中,浆液是单一配比的稳定浆液,浆液在2h内的沉淀率应小于5%。在高压力灌浆条件下,稳定浆液可以避免在岩石裂隙中出现水浆分离的现象,更好地保证灌浆质量。本文在Lombardi博士研究成果的基础上,结合以往现场浆液试验与实践经验,从浆液2h沉淀率、7d抗压强度、稠度等指标,以科特迪瓦波波里水电站项目为依托,研究在坝基强弱风化岩石条件下GIN稳定浆液配合比设计方法。 展开更多
关键词 国际水电站 gin 帷幕灌浆 稳定浆液 配合比
下载PDF
Analysis of Speeds of Cylinders of Saw Gins and Linters and Determination of Critical Frequencies for them 被引量:3
20
作者 Akmal Umarov Kamola Ortikova Akramjon Sarimsakov 《Engineering(科研)》 2020年第10期715-722,共8页
With an increase in the density of the seed roll in the roll box of the saw gin, the quality indicators of the fiber and seed are poor, energy consumption increases, machine breakdowns increase, and when the density d... With an increase in the density of the seed roll in the roll box of the saw gin, the quality indicators of the fiber and seed are poor, energy consumption increases, machine breakdowns increase, and when the density decreases, the performance of the saw gin increases. Therefore, the density control of the seed roll is one of the important problems in the ginning process. The paper proposes a change in the rotation speed of the saw cylinder with a decrease in the diameter of its numerical linear speed and machine productivity. The article describes the problem of regulating the density of a seed roll in a saw gin of the DP series, provides an overview of work on regulating the operation of the machine, determines the dependence of the productivity of gins and linters on the state of the saw system in these machines, as well as changes in the linear speed of the saw by changing its diameter. Also, the critical speed of the gin and linter saw cylinder was determined to prevent resonance. In this case, the Simulation package of the SolidWorks computer program was used. The results of the study made it possible to adjust the speed of the cylinders when changing the diameter of the saws, which improved the productivity of the machine while maintaining the quality of the fiber and seed. 展开更多
关键词 Cotton Saw gin Roll Box Seed Roll Productivity Rotation Frequency Critical Frequency Resonance Stiffness Mass Total Effective Mass SolidWorks Simulation
下载PDF
上一页 1 2 15 下一页 到第
使用帮助 返回顶部