使激活

Low concentration ryanodine can mimic BDNF to induce growth cone attraction and high dose ryanodine gradient is repulsive to the growth cone.

ryanodine 可以模拟 BDNF 的吸引作用。为进一步研究 Rho GTPases 在轴突转向中的作用，我们将 Cdc42及 RhoA 的显性失活突变基因(dominant negative， DN)及组成性激活突变基因（ constitutively active， CA ）注射到爪蟾胚胎2-4细胞期的一个细胞中，使它们在胚胎神经元中表达，并观察这些突变基因对 BDNF ， LPA ， ryonodine 诱导的轴突转向的不同影响，从而推测 Rho GTPases 是否直接参与并介导轴突导向。

Furthermore, the effects of different metallic salts,nitrogen sources,carbon sources,temperature,pH,water content and fermentation time on the enzyme activity and the yield of the acid protease were studied and the results were as follows: both MnCl2 and CuSO4 could activate the protease while other metallic salts inhibited the protease on different levels; addition of 1 % bean flour and 1 % glucose could increase enzyme yield and enzyme activity by 71 % and 31 % respectively; the maximal yield of enzyme was achieved under the conditions of temperature at 40 ℃ and pH as 7.0; water content and fermentation time would also influence enzyme yield on different levels.

不同金属盐对该酶酶活及不同氮源、碳源、温度、pH、含水量以及发酵时间对菌株产酶的影响试验结果表明：MnCl2，CuSO4均对该酶有激活作用，其他金属盐类对该酶有不同程度的抑制作用；添加黄豆粉（1 %）和葡萄糖（1 %）可使菌株产酶酶活分别提高71 %和31 %；培养温度为40 ℃以及培养基起始pH为7.0时产酶最高；含水量和发酵时间对产酶也有不同程度的影响。

Ceramic bearings can produce oxidation-ho, silicon carbide, silicon nitride and so on, diameter from 3mm-50mm, precision Machinable P0, P6, P5 level; its performance characteristics are: high temperature, oil-free self-lubricating, acid, alkali and salt corrosion , wear resistance, low noise, insulating diamagnetic, since high-speed operation; metal nano-ceramic bearing its production process for a new generation of high content of nano-particles in the heat and pressure infiltration of metal surface is activated to fill the cracks and pits the metal so that 3-5 micron metal surface is more smooth solid surface, greatly reduce the friction, improve Chennai base metals, and greatly increased the life span of bearings, and its characteristics are: long life (as an ordinary stainless steel bearings 2 -- 10-fold), low noise (as an ordinary stainless steel bearings, 70%), wear-resisting, acid, alkali, salt corrosion, high temperature, load large; ceramic bearing and metal nano-ceramic bearing design and development to meet the needs of the market for high-speed, low - noise, high load, the demand for corrosion-resistant; Machinery Production Department to produce aircraft rod end joint bearing, linear guide bearings, the fuel tank of earrings, plastic bearing, non-standard side bearing components, glass door hardware, such as high-precision control products; and provide CNC machining.

陶瓷轴承可生产氧化镐、碳化硅、氮化硅等，内径从3mm-50mm，精度可加工P0、P6、P5级；其性能特点为：耐高温、无油自润滑、耐酸、碱、盐腐蚀、耐磨、低噪音、绝缘抗磁、起高速运转；金属纳米陶瓷轴承其生产工艺为新一代的高含量纳米级微粒在热和压力的作用下被激活渗入金属表面，填补金属缝隙和凹坑，使金属表面3-5微米表面更光滑坚固，大大降低其摩擦力，提高金属的奈酸碱性，并大大提高了轴承的寿命，其特性为：长寿命（为普通不锈钢轴承的2-10倍）、低噪音（为普通不锈钢轴承的70%）、耐磨、耐酸、碱、盐腐蚀、耐高温、负载大；陶瓷轴承与金属纳米陶瓷轴承的设计开发以满足市场对高转速、低噪音、高负载、耐腐蚀的需求；机械生产部以生产机杆端关节轴承、直线导轨轴承、油缸耳环、塑料轴承、非标端轴承零部件、玻璃门控五金等高精度产品；并对外提供数控加工。

Fast market respond, multiple products, soft design, the theory of effective service and mutual benefit, taking customer co-operator and delivering market demands make the company's mechanism being activated for customer's satisfiction on design selection, solution, consultation and service before or after sales, and implement deep cooperation with customers to be benefit community and gain double win with respective advantages.

快速的市场反应、多品种产品、柔性化设计与有效的服务、互惠合作共创价值的理念，视客户为合作者并通过客户将市场对产品要求的压力传递，使公司的机制始终保持让客户满意为最优先追求的激活状态，在设计选型、解决方案、售前售后咨询及服务，开展深度的合作，结为利益共同体，以各自的优势，取得双方共赢！核心合作的学科研单位和高新技术企业：浙江大学，北京昆仑天辰仪表科技有限公司。

Fast market respond, multiple products, soft design, the theory of effective service and mutual benefit, taking customer co-operator and delivering market demands make the company's mechanism being activated for customers satisfiction on design selection, solution, consultation and service before or after sales, and implement deep cooperation with customers to be benefit communi

快速的市场反应、多品种产品、柔性化设计与有效的服务、互惠合作共创价值的理念，视客户为合作者并通过客户将市场对产品要求的压力传递，使公司的机制始终保持让客户满意为最优先追求的激活状态，在设计选型、解决方案、售前售后咨询及服务，开展深度的合作，结为利益共同体，以各自的优势，取得双方共赢！

Fast market respond, multiple products, soft design, the theory of effective service and mutual benefit, taking customer co-operator and delivering market demands make the company's mechanism being activated for customer's satisfiction on design selection, solution, consultation and service before or after sales, and implement deep cooperation with customers to be benefit community and gain double win with respective advantages

快速的市场反应、多品种产品、柔性化设计与有效的服务、互惠合作共创价值的理念，视客户为合作者并通过客户将市场对产品要求的压力传递，使公司的机制始终保持让客户满意为最优先追求的激活状态，在设计选型、解决方案、售前售后咨询及服务，开展深度的合作，结为利益共同体，以各自的优势，取得双方共赢！

Fast market respond, multiple products, soft design, the theory of effective service and mutual benefit, taking customer co-operator and delivering market demands make the company's mechanism being activated for customers satisfiction on design selection, solution, consultation and service before or after sales, and implement deep cooperation with customers to be benefit community and gain double win with respective advantages.

快速的市场反应、多品种产品、柔性化设计与有效的服务、互惠合作共创价值的理念，视客户为合作者并通过客户将市场对产品要求的压力传递，使公司的机制始终保持让客户满意为最优先追求的激活状态，在设计选型、解决方案、售前售后咨询及服务，开展深度的合作，结为利益共同体，以各自的优势，取得双方共赢！

Fast market respond, multiple products, soft design, the theory of effective service and mutual benefit, taking customer co-operator and delivering market demands make the company's mechanism being activated for customer's satisfiction on design selection, solution, consultation and service before or after sales, and implement deep cooperation with customers to be benefit community and gain double win with respective advantages.

电力仪表：智能电力测控仪、电机保护控制器、电子式多功能电能表等。快速的市场反应、多品种产品、柔性化设计与有效的服务、互惠合作共创价值的理念，视客户为合作者并通过客户将市场对产品要求的压力传递，使公司的机制始终保持让客户满意为最优先追求的激活状态，在设计选型、解决方案、售前售后咨询及服务，开展深度的合作，结为利益共同体，以各自的优势，取得双方共赢！

Fast market respond, multiple products, soft design, the theory of effective service and mutual benefit, taking customer co-operator and delivering market demands make the company's mechanism being activated for customers satisfiction on design ion, solution, consultation and service before or after sales, and implement deep cooperation with customers to be benefit community and gain double win with respective advantages.

快速的市场反应、多品种产品、柔性化设计与有效的服务、互惠合作共创价值的理念，视客户为合作者并通过客户将市场对产品要求的压力传递，使公司的机制始终保持让客户满意为最优先追求的激活状态，在设计选型、解决方案、售前售后咨询及服务，开展深度的合作，结为利益共同体，以各自的优势，取得双方共赢！核心合作的学科研单位和高新技术企业：浙江大学，北京昆仑天辰仪表科技有限公司。

Fast market respond, multiple products, soft design, the theory of effective service \\and\\ mutual benefit, taking customer co-operator \\and\\ delivering market dem\\and\\s make the company's mechanism being activated for customer's satisfiction on design \\select\\ion, solution, consultation \\and\\ service before or after sales, \\and\\ implement deep cooperation with customers to be benefit community \\and\\ gain double win with respective advantages.

快速的市场反应、多品种产品、柔性化设计与有效的服务、互惠合作共创价值的理念，视客户为合作者并通过客户将市场对产品要求的压力传递，使公司的机制始终保持让客户满意为最优先追求的激活状态，在设计选型、解决方案、售前售后咨询及服务，开展深度的合作，结为利益共同体，以各自的优势，取得双方共赢！核心合作的学科研单位和高新技术企业：浙江大学，北京昆仑天辰仪表科技有限公司。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。