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日本迄今为止最年轻的舞曲说唱组合(Dance Rap Group)! HEADS的全体成员均为中学生,其中2人今年刚刚升入中学。出道前,他们每周都......
“Locked twins” is a rare event occurring in about 1 in every 1000 twin births. A 21-year-old primigravida with a 31-we......
目的:分析南、北葶苈子的挥发性成分,并比较其差异。方法:采用顶空固相微萃取法对葶苈子的挥发性成分进行提取,采用气相色谱-质谱联......
顶空固相微萃取(headspace solid-phase microextraction,HS-SPME)是提取挥发性成分比较常用的方法。为了确定提取酱油挥发性成分的SP......
Multi-objective optimization of stamping forming process of head using Pareto-based genetic algorith
To obtain the optimal process parameters of stamping forming, finite element analysis and optimization technique were in......
目的建立测定硫酸特布他林原料药中3种有机溶剂残留量的气相色谱法。方法采用顶空毛细管气相色谱法,以1%二甲亚砜水溶液为溶剂,DB-......
采用顶空气相色谱-质谱(Headspace/GC-MS)联用技术对补骨脂挥发油化学成分进行分析,确认出65种组分,并用峰面积归一化法测定,其质量......
Metal sheet spinning is an advanced near-net forming technology for the manufacture of thin-walled ellipsoidal heads.The......
以泡萝卜为研究对象,采用顶空固相微萃取结合气相色谱-质谱联用法,分别对正常、发黄和发红泡萝卜的挥发性成分进行比较研究。研究......
摘 要:为评价分析消费者对不同猪肉丸子的喜爱程度,对4 种肥瘦比不同的猪肉丸子进行感官评价,并用顶空固相微萃取-气相色谱-质谱(heads......
DEVELOPMENTANDAPPLICATIONOFd30mmANDd32mmDRILLHEADSLiu,Rongxiang;Yi,Kaihua;Pei,XitaoWang,Wenzhao(PowdorMetallurgyFactory,Centr.........
设计了3种方案对新型α型Ti-6Ta合金板材进行封头冲压成形试验,在冲压的封头不同部位取样进行压扁、拉伸、硬度、金相等相关检测和......
目的:建立同时测定甲苯磺酸妥舒沙星原料药中甲醇、乙醇、二氯甲烷、正己烷、四氢呋喃和苯等有机溶剂残留量的方法。方法:采用顶空气......
分析尿素装置高压氨预热器多次发生列管及封头泄漏的原因,提出如何处理及防止类似事故的发生。......
建立了测定工业废水中乙醇和异丙醇的顶空毛细管气相色谱法.采用顶空进样技术,分析过程不使用有机试剂,避免了对分析人员和环境的......
目的探讨顶空固相微萃取(SPME)技术与气相色谱法联用测定水中五氯酚.方法优化水中五氯酚的SPME顶空浓缩和微萃取技术,然后使用毛细......
Assessment of Factors Affecting Ephemeral Gully Development in Badland Topography: A Case Study at G
Gully erosion in the Paschim Medinipur district of West Bengal, Indiahas been an issue of anxiety, formed by the amputat......
We consider the extension of network lifetime of battery driven wireless sensor networks by splitting the sensing area i......
It was early spring in 1985.I was watching a local opera on the village’s Willow Stage.Mom spotted me among the crowd a......
Groundwater occurs as a thin lens of freshwater floating over seawater in small islands aquifers.The impacts of climate ......
One of the major constraints of wireless sensor networks is limited energy available to sensor nodes because of the smal......