Results 1 to 10 of about 14,191 (165)

Discriminant Analysis of Volatile Components of Different Quality Grades of Edible Alcohol Based on GC×GC/TOF MS(基于GC×GC/TOF MS对不同等级食用酒精挥发性成分的判别分析) [PDF]

open access: yesShipin kexue jishu xuebao, 2022
The content of volatile components in edible alcohol is extremely low. However, these low volatile components directly affect the taste and grading of edible alcohol.
LI Lianghao(李良好)   +6 more
doaj   +1 more source

Research on Lightweight Design Knowledge Manage System of Loader [PDF]

open access: yes, 2007
在全球资源日益紧张的今天,结构轻量化研究得到越来越多的关注,我国从20世纪90年代将轻量化设计技术引入工程机械领域,随着轻量化技术的不断发展,国内各高校和企业在减少材料消耗、减少环境污染、提高材料利用率、提升工程机械性能以及提高利润和国际竞争力等方面取得了很好的成果。目前,国内的轻量化设计主要是以几何模型为主的传统CAD优化设计,在设计过程中缺乏对轻量化设计知识和经验的有效归纳和整理,没有实现知识的共享和重用等,导致产品发展较慢、缺少核心竞争力。因此 ...
Magrans de Abril, Ildefons   +1 more
core   +2 more sources

Spectrum allocation algorithm based on multi-agent reinforcement learning in smart grid [PDF]

open access: yes, 2023
In view of the fact that 5G networks are used to meet the service requirements of various power terminals in smart grid, a spectrum allocation algorithm based on multi-agent reinforcement learning was proposed.Firstly, for the integrated access backhaul ...
Feng YAN   +5 more
core   +1 more source

Difference Analysis of Volatile Sulfur-Containing Compounds in 6 Kinds of Wuling Soy Sauce Aroma-Type Baijiu(6种武陵酱香型白酒中挥发性含硫化合物差异分析) [PDF]

open access: yesShipin kexue jishu xuebao
Volatile sulfur-containing compounds (VSCs) have the characteristics of intensive aromas and low thresholds, which have important impacts on the flavor of foods.
LI Xing(李行)   +8 more
doaj   +1 more source

用于空间探测的静电分析器轻量化设计与验证

open access: yesKongjian kexue xuebao, 2023
针对空间探测载荷的轻量化需求,以空间等离子体探测的静电分析器为研究对象,进行了轻量化设计和验证。在材料及加工方式选择方面,充分利用增材制造这一新兴加工手段,打破传统轻量化设计时追求低密度材料的思路,对比多种材料及加工方式下设备重量及力学表现,确定铝合金为主要材料,3D打印为主要加工方式。在结构设计方面,基于3D打印加工的优势,在减小设备各部分结构厚度的同时,适当设置加强筋以解决薄壁在后处理时易产生形变的问题。采取上述方案设计的设备质量减少至1.2 kg,比使用镁合金及传统加工方式的设备质量(2.2 kg)
杨 墨欣, 张 爱兵, 解 世君
doaj   +1 more source

Lightweight decentralized learning-based automatic modulation classification method [PDF]

open access: yes, 2022
In order to solve the problems in centralized learning, a lightweight decentralized learning-based AMC method was proposed.By the proposed decentralized learning, a global model was trained through local training and model weight sharing, which made full
Biao DONG   +4 more
core   +1 more source

基于颗粒阻尼技术的数控机床轻量化研究 [PDF]

open access: yes, 2018
随着数控机床向高精度、高速度和绿色化发展,轻量化数控机床的优势越来越明显。以ZN-XK2840数控龙门镗铣床为例,提出一种基于颗粒阻尼技术的数控机床轻量化设计方法。首先通过有限元法对常规数控机床结构的静态性能进行分析,对其壁厚进行优化,对轻量化的机床结构的静态性能进行分析,确保其最大变形量和强度满足使用要求;然后对常规数控机床的动特性如模态特性、谐响应进行分析。颗粒阻尼技术能够在振动传递路径有效降低机床结构振动,通过建立颗粒系统-龙门铣床动力学模型 ...
肖望强, 许展豪, 边贺川
core   +1 more source

Effect of Thermal Sterilization on Physicochemical Stability and Antioxidant Capacity of Flaxseed Milk(热杀菌对亚麻籽乳理化稳定性及抗氧化能力的影响) [PDF]

open access: yesShipin kexue jishu xuebao
Flaxseed, as a functional food raw material, was rich in α-linolenic acid, high-quality proteins, soluble polysaccharides, lignans and other active lipid concomitants, thereby possessing high nutritional value and potential for development and ...
YU Xiao(禹晓)   +8 more
doaj   +1 more source

Relationship between elements in the absorption and purification(富营养化水体中植物的元素吸收与净化能力的关系)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2002
研究了不同植物在两种程度富营养化水中对元素的去除率及对富营养化成分的去除率.在重度富营养化水中,蒸腾强度高的植物对水中各成分均具较好的净化效果;而在轻度富营养化水中,所研究的植物间没有共同趋势.另外,可根据不同植物对环境的各自适应方式将其用于净化不同类型的污水.其中,灯芯草和空心菜不需元素补给,在重度和轻度富营养化水中均具较好的净化能力;鸭跖草是耐阴植物,有适度遮荫时净化效果较好;菩提子用于净化重度富营养化水时需补给适量的常量营养元素;芦苇在轻度富营养化水中净化能力较好 ...
GUANBao-hua(关保华)   +6 more
doaj   +1 more source

LED Lighting with Bluetooth Control Based On New Thermal Materials [PDF]

open access: yes, 2016
LED作为新型的能源,因其光电转换效率及使用寿命与芯片的工作温度有着直接的关系。因此,LED光源的散热问题一直备受关注。实现高性价比的散热解决方案成为灯具设计者追求的目标。本文提出一种新的有机导热材料,用于替代传统散热器,其具有设计灵活、绝缘、轻量化的特点,为LED照明产品的生产提供了一种新的思路和解决方案。本论文根据市场对节能、健康、舒适和智能照明的需求,设计并实现了一款应用新导热材料的智能蓝牙调光球泡灯。设计开发了一款7W的蓝牙智能调光LED照明驱动系统,可实现通过手机APP控制LED灯具亮度 ...
张卫
core  

Home - About - Disclaimer - Privacy