为了完善头孢地尼原料药的质量控制,建立其质量标准,从头孢地尼的合成路线入手,分析并合成其中可能存在的 5 种杂质:噻唑乙酰基甘氨酸肟,杂质 O ,杂质 D ,杂质 G 和杂质 S ,并经核磁共振氢谱和质谱确认.纯度经高效液相色谱法测定均达到了 99% 以上,可作为头孢地尼药物质量控制的杂质对照品 , 为头孢地尼产业化...
本发明公开一种基于DQN算法原理的工作流调度方法.本发明属于办公自动化领域,用于OA工作流的优化.所述工作流调度系统分为工作流实例处理模块,状态观测模块,双DQN训练模块,智能化综合调度模块四大部分.所述工作流调度系统对OA系统业务流转过程提供辅助办公提示——包括流转决策以及办理优先级,最终达到提升办公效率和质量的目...
Enjoy Chiloe Hotel De La Isla Questions & Answers 830 Reviews Ranked #5of 14Hotels in Castro Cafcru Santiago Metropolitan Region, Chile Hola ¿Cómo es la vista de un departamento junior en comparación a la de una suite? Gracias over a year agoAnswer 0 answers...
580. Influenza, SARS-CoV-2, and routine childhood vaccines – trends in vaccine hesitancy in hospitalized children before and during the COVID-19 pandemic SARS-CoV-2 comparison of study population, 2020-2021 versus 2021-2022 CONCLUSION. Our results suggest a trend that VH may be increasing. ...
黄河,被誉为中华民族的母亲河,奔腾不息的黄河水,滋养着中华民族世世代代,繁衍生息,孕育着中华文明源远流长,历久弥新.黄河流经内蒙古自治区时,勾勒出一个壮美的"几字弯",位于母亲河的上游末端,这个"几"字的第二笔横上边,有一块得天独厚的地方,就是被誉为"塞上江南"的河套平原.她东西长约180公里,南北宽约...
摘要: PURPOSE: To prevent the breaking and cracking of a washing solid agent in a container by great vibration, make it possible to supply aromatic washing solution with a certain density and to enable the use of the whole quantity of washing solid agent....
PURPOSE:To prevent a screw from being deformed by a method wherein an opener cap made of hard plastic is provided on a soft plastic container, and the diameter of the opener cap is made smaller than the long diameter of a pole on which the opener cap is screwed. CONSTITUTION:A cap 1 ...
Reports on the commercial availability of magneto-optical disks with densities of about 0.65 gigabits (Gbits) per square inch. Use of the spatial-spectral memory; Storage mechanism; Description of the medium used; Limitations in laser tuning. INSET: Spatial-spectral selective optical memory, by N...
白天整天干着累人的农活,晚上炒茶.灶里烧着火,人站在火热的灶台边,手放在热锅里不停地翻炒.因为实在太疲乏,经常炒着,炒着就睡着了,手就贴在了滚烫的铁锅上.这就是福布斯富豪倪召兴真实的早年生活片段.真正"草根"出身的倪召兴,拿着1万元开始创业,20年后的今天已经成为在房地产和石油等领域,国内外叱咤风云的人...
金银花为忍冬科忍冬属落叶或半常绿藤本植物,又名忍冬花,金银藤.金银花味甘,性寒,有清热解毒之功效,为名贵药材.金银花又可加工成金银花茶,金银花啤酒等保健品,使其用途... 闫德军,孙述峰,孙士峰,... - 《农村科技开发》 被引量: 3发表: 2005年 花发金银满架香 因金银花呈黄白二色,犹如金银搭配,所以得名"...