排序方式: 共有24条查询结果,搜索用时 281 毫秒
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Carsten Buhlmann 《经济导报》2006,(2):36-42
对制药公司来说,重组细胞药物靶点的表达和纯化是一项很有挑战性的任务。由于此药物涉及范围广及其高流通量,焦点通常集中在核心设备上。为了筛选靶点,需要大量的高纯度蛋白质,以便在药物发现期间,可进行功能分析或者利用结晶学进行结构研究。与生物制药学一样,蛋白质变得越来越重要,对其需求也越来越多。 相似文献
13.
Daryl Fernandes 《经济导报》2006,(2):132-133,135,136
一些生物技术产品,比如促红细胞生成素和单克隆抗体(mAbs)等,可以发生糖基化作用,这一性质显著影响了它们在体内的安全性和治疗效果。这些治疗用糖蛋白发生糖基化作用后生成多糖,从而影响了它们的生物活性和稳定性,这也是造成生物技术产品生产过程中出现批次差异的主要因素。 相似文献
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Dr.Wolfgang Duschek 《汽车工艺与材料》2009,(9):5-8,11
1“集成工艺”的开发
(1)经济性
a.降低工艺成本。
b.提高工艺效率。
c.缩短涂装工艺链。
(2)生态性
a.减少涂料VOC的排放。
b.减少废气的排放。
c.减少CO,排放。 相似文献
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Mark Tucker 《汽车与配件》2011,(Z1)
最新的驾驶辅助系统(DAS)技术通过传感器数据融合,把来自不同信息源的传感器数据结合起来,形成更全面的有关道路状况的报告,从而让车辆和道路更安全。 相似文献
16.
F. Uffelmann Direktor: Prof. Dr.-Ing. M. Mitschke 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1978,7(4):183-201
Simulation of Steering and Braking Behaviour of Tractor-Semitrailer Vehicles in Extreme Situations
This paper deals with the simulation of the behaviour of tractor-semitrailer vehicles at braking on wet, slippery road surface. The nonlinear model used for the computation enables to simulate extreme situations at wheel locking and swerving
The instabilities during braking such as jackknifing and trailer swing as well as non steerability are investigated. Straightline braking shows the influence of cornering on the behaviour during braking in a turn. 相似文献
This paper deals with the simulation of the behaviour of tractor-semitrailer vehicles at braking on wet, slippery road surface. The nonlinear model used for the computation enables to simulate extreme situations at wheel locking and swerving
The instabilities during braking such as jackknifing and trailer swing as well as non steerability are investigated. Straightline braking shows the influence of cornering on the behaviour during braking in a turn. 相似文献
17.
V. Bormann Direktor: Prof. Dr.-Ing. M.Mitschke 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1978,7(2):65-81
Measurement of two track road inputs and theoretical application of the results
The calculation of vehicle response to road-surface irregularity inputs requires the spectral densities of the left and right longitudinal track and their statistical dependence
This paper presents some resluts of parallel profile measurements, three typical german roads have been chosen
Random vibration of two vehicle types are digital-simulated. The dynamic tire load shows that independent suspension systems are more advantageous than beam axles, because by wheel tramp this type increases the dynamic tire load. 相似文献
The calculation of vehicle response to road-surface irregularity inputs requires the spectral densities of the left and right longitudinal track and their statistical dependence
This paper presents some resluts of parallel profile measurements, three typical german roads have been chosen
Random vibration of two vehicle types are digital-simulated. The dynamic tire load shows that independent suspension systems are more advantageous than beam axles, because by wheel tramp this type increases the dynamic tire load. 相似文献
18.
S. Drücker D. Steglich L. Merckelbach A. Werner S. Bargmann 《Journal of Marine Science and Technology》2016,21(2):261-270
Underwater gliders, which are profiling autonomous underwater vehicles designed to make oceanographic measurements, are increasingly used in the coastal ocean. As they regularly surface for data transmission, gliders increasingly pose a risk for fast ships. In order to estimate the extent of damage due to collision, 3D finite element simulations of collisions between a glider and a high-speed craft with a glass-fiber reinforced plastic hull are performed. Different collision scenarios such as impact locations, angles of attack and speeds are examined. The results are compared to an analytical solution based on simplifying assumptions. Although both methods reveal consistent results, it is shown that finite element simulations are required to account for the 3D shape of the ship. The results indicate that at ship velocities exceeding 7.5 m/s (14.6 kt) the glider penetrates the ship’s hull causing severe damage to its structure. 相似文献
19.
Mark Tucker 《汽车与配件》2011,(10):36-38
对零部件供应商来说,电动助力转向(EPS)的技术挑战在于,如何达到并超越液压系统的操控感。最新的EPS技术--带式驱动EPS,尤其适用于前桥重量较大的车型,能够满足所有汽车细分市场对转向系统的高要求。 相似文献
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Georg Bauer 《经济导报》2006,(2):138-140
品牌保护计划和产品供应链项目的成功与否,取决于品牌供应商是否有能力满足不同客户的个性化需求。现在,造假技术已经非常高明了,假冒伪劣产品完全可以达到以假乱真的程度,人们从外包装上很难区分出假冒伪劣产品与正品的差异。采用科学方法设计的防伪包装技术能够确保药品的真实性、质量和安全性。 相似文献