Study on Novel Trinuclear PNP Ligand Used in Ethylene Tetramerization 新型三核双膦胺(PNP)配体用于乙烯四聚的研究
New PNP ligands were synthesized and characterized by means of1H NMR, EI-MS and CHN elemental analysis. 合成新型的PNP型膦胺配体,并采用核磁共振氢谱、质谱、元素分析对其结构和组成进行了表征。
Cytotoxic killing effects of a PNP-TK chimeric suicide gene system and a single PNP suicide gene system on hepatoma cells PNP-TK融合自杀基因及PNP单自杀基因对肝癌细胞杀伤效率
This paper presents the main results of our study on pathogenesis and clinical pathway of PNP in order to provide options to physician to make effective treatment and improve the prognosis of patient. 本文概括和介绍本病的临床特点、诊断要点和临床路径以及发病机理研究的主要结论,旨在指导临床医生更好的认识和正确处理本病,降低其病死率。
Introduces a good way that capitalizes power transistors of PNP pattern to amplify output current. 提出了利用PNP型功率晶体管来扩展集成电源器件输出电流的方法。
Regardless of type NPN or PNP-type tubes, the internal transistor has three areas, namely, the launch area, base, collector area, the three areas form two PN junction. 无论NPN型还是PNP型管,三极管内部均有三个区、即发射区、基区、集电区,三个区形成两个PN结。
Thus, PNP has good potential as a natural antioxidant used in food or medicine industries. 结论:滑菇多糖可作为潜在天然抗氧化剂应用于食品和医药工业中。
Vector Construction and Expression of E.Coli PNP Suicide Gene ePNP自杀基因载体的构建及其表达
Under the optimum conditions, PNP yield reached up to9.17%. 此条件下的滑菇多糖粗品得率达9.17%;
The developing history of PNP from mononuclear to dinuclear and trinuclear was introduced, and influences of PNP structure on the stability, activity and selectivity of the catalyst were emphasized. 重点介绍了PNP由单核向双核、三核的开发进程,并讨论了其结构对催化剂稳定性、活性和选择性的影响。
The pathogenic autoantibodies existed in PNP sera, and their production was correlated with the associated tumor. 患者血清中可存在致病性的自身抗体,其产生与伴发的肿瘤有关。
Research on PNP Ligands Contained Halogen for Ethylene Tetramerization 卤代PNP配体用于乙烯四聚的研究
It realizes high speed data acquisition and PNP. 由此实现数据的高速采集和即插即用。
PNP showed strong in vitro reducing power and free radical-scavenging capacity. 滑菇多糖具有较强的还原力和较强的自由基清除作用。
PNP/ MeP-dR suicide gene system killed hepatoma cells PNP/MeP-dR系统对肝癌细胞杀伤作用的实验研究
Wu's Method is applied to deal with polynomial equations system derived from Perspective-n-Point ( PnP) Problem. 用吴方法处理PnP问题导出的多项式组,可以用数学机械化方法得到P3P方程组的全部解,不杂不漏;
Also it expounded the main points and implementing methods when develop device driver software in such PNP devices. 同时,介绍了在USB这类PNP设备在开发中,设备驱动软件开发要点及实现方法。
A vertical PNP transistor with P-buried collector is used as injector which is merged with the downward operating NPN transistor. 该结构采用P埋集电极纵向PNP晶体管作注入器,巧妙地实现了与正常向下工作的NPN晶体管并合。
The effects of phosphorus content on magnification of PNP transistor in PSG film by LPCVD have been investigated. 本文研究了以低压化学气相淀积方法生长PSG表面钝化膜中磷的含量对横向PNP管放大倍数的影响。
The driver can realize DFU Class-specific requests, the PNP ( Plug and Play) and Power management function. 实现了DFU类标准请求,USB设备即插即用及电源管理等功能。
A microelectronic test pattern for evaluating bipolar devices ( npn or pnp transistors) is presented. 本文提出一种用于科学地评价双极型半导体器件(npn或pnp晶体管)工艺水平的微电子测试图形。
In this paper the two-dimension analysis is given for transversal PNP Transistor. 本文对横向PNP晶体管进行了二维分析。
In other words, the PnP problem with an uncalibrated camera can be linearly solved in this case. 也就是说,给定平移视点下的两幅控制点图像,可以线性求解摄像机未标定的PnP问题。
Lateral channel field-controlled thyristor is a combination of a NJFET and a PNP bipolar transistor. 水平沟道场控晶闸管是由结型场效应晶体管和双极型晶体管复合构成的一种晶闸管。
Apoptosis analysis indicated that the PNP/ fludarabine suicide gene system had apoptotic effect on BEL7402 cells. 细胞凋亡检测显示,PNP/fludarabine自杀基因系统对BEL7402细胞具有明显的诱导凋亡作用。
Objective To construct three expression vectors harboring PNP ( purine nucleoside phosphorylase) gene under three different promoters. 目的分别构建三种启动子调控的大肠杆菌嘌呤核苷磷酸化酶(PNP)基因表达载体,检测、分析三者的表达差异。
The expression of PNP gene was identified by reverse transcriptase ( RT)-PCR and Northern blotting. 应用逆转录(RT)鄄PCR和RNA印迹法(northernblotting)鉴定PNP基因的表达。
According to VXI-bus plug and play Specification, FPGA and RELAYS method are used to realize the module. 按照VXI总线PnP规范,采用FPGA+RELAYS的方法实现该模块的设计。该模块是一种单槽、C尺寸、寄存器基器件。
There is a digital control circuit to modify the number of the PNP transistor arrays, as soft-trimming. 电路中使用数字控制的PNP晶体管阵列进行软修正。