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Nine super sweet corn inbred lines with abroad germplasm T1, T2, T3, M1, M2, M3, R1, R2, R3 were selected as tested lines, and original inbred lines B, C, D, 6, D2 as testing ones in this examination. 45 crosses were made by means of incomplete diallel method, and the genetic parameters of the groups and the combing ability of 10 traits, growth period, plant height, ear height, ear length, ear diameter, core diameter, baldhead length, rows per ear, kernels per row, single ear weight were tested and analyzed by means of NCⅡ design.

选用具有国外血缘的T1、T2、T3、M1、M2、M3、R1、R2和R3共9个超甜玉米自交系做被测系,以原有5个自交系B、C、D、6和D2做测验系,采用不完全双列杂交法组配出F1杂交组合45个,对生育期、株高、穗位高、穗长、穗粗、芯粗、秃尖长、穗行数、行粒数、单穗重10个性状按NCⅡ设计的原理和方法进行配合力测定与分析,并估算群体遗传参数。

In the paper, we report a chemical reduction method as a processing technique for the formation of ultra-fine copper powder particles with excellent dispersibility.

在论文中,我们报告一位化学还原法作为一种处理办法对超细铜粉颗粒形成具有优良的分散性。

Who was blinded to patient and group identity.

有单独的一位观测者收集X线数据,并就患者以及分组情况对该观测者实施盲法。

The performance and mechanism of corrosion inhibitions of POCA were studied bymethods such as weight-loss, electrochemistry, EDS, XPS and quantum chemistry. It isfound that POCA is cathodic corrosion inhibitor, having synergistic effect with HEDP andZn~(2+). The P and O atoms of phosphono have important electron density contribution toHOMO orbital and the electron gross orbital population is bigger than 1, so it is easy toform absorbing location between phosphono and metal resulting in good corrosioninhibition on mild steel.

通过利用失重法、电化学方法、扫描电镜、X光电子能谱、X-射线能谱和量子化学方法研究膦酰基羧酸的缓蚀性能及其机理,发现POCA是一种阴极型缓蚀剂,与HEDP、Zn~(2+)具有优良的协同增效作用;POCA分子中的膦酰基基团的P原子和O原子对HOMO轨道电荷密度贡献较大,且其轨道电子布居数均大于1,因此比较容易通过膦基与金属形成吸附位而对碳钢具有良好的缓蚀作用;对铜合金具有一定的腐蚀作用,但腐蚀作用比HEDP等有机膦药剂要小得多,同时与BTA具有优良的相容性,添加1mg/L的BTA则可以有效地防止铜合金的腐蚀。

Chiral separation of D -, L -phenylglycine by RP-HPLC was accomplished by adding a complex of optically active L -Phe-Cu2+ to the mobile phase. Chiral separation mechanism was further elucidated in light of unambiguously assigning the structure of the elutents from RP-HPLC by taking advantage of tandem mass spectrometry due to its unique capability of structural identification of the unknows.

以含 L -苯丙氨酸铜配位络合物的溶液作为手性流动相,采用反相高效液相色谱法拆分了非衍生苯甘氨酸对映体,使用质谱对拆分组分进行了结构鉴定,得到了拆分组分的化学结构,用量子化学计算预测了该结构的最稳定构象。

The reliabilitymethods of calculating the usage life by using the middle rank of incomp lete life data in the statistical field were introduced. The life of the engine gradually develop swith the increases of the reliability growth.

根据发动机短使用寿命这一特点,用威布尔分布模型描述此发动机涡轮叶片寿命分布,建立了发动机寿命可靠性模型,采用不完全寿命数据的中位秩法对发动机叶片寿命进行可靠性计算。

In this paper, modified analytical embedded-atom method, combined with heavy-bit lattice model, using MATLAB programming from the atomic-scale calculations and analysis of body-centered cubic metals Fe (001) face to reverse the grain boundary of energy and structure of crystals between the translation and expansion of energy and structure of the system, and with the relevant control experiments were observed.

对材料性能预测、材料改性和新材料设计以及传统材料及其应用有着重要的指导意义。本文采用改进分析型嵌入原子法,结合重位点阵模型,借助MATLAB编程从原子尺度计算和分析了体心立方金属Fe(001)面扭转晶界的能量和结构,探讨了晶体间平移和膨胀对体系能量和结构的影响,并与相关实验观察进行了对照。

It is more congruent with biologic mechanies and normal physiological anatomise,and it is more sensitively and effectively to detect early or dormant patello-femoral disease. Keywords:weight-bearing, Merchant view, Patello-femoral, projecting technology.

负重髌骨轴位投照法操作简便,实用性强,更符合生物力学原理,切合正常生理解剖,临床应用对早期及隐匿性髌股关节紊乱的检测更灵敏、更有效。

Materials and Methods Helical CT was performed with 3.0mm slice thickness and 1.0~1.2 pitch in 10 normal subjects and 36 patients with upper airway diseases. In the healthy group, the upper airway shaded surface display was processed by using different reconstruction interval (1.0~3.0mm) and upper threshold (0~-900HU), while in the patient group, SSD, RaySum and integrated 3D images were made respectively.

材料与方法对10例正常和36例上气道病变的患者进行轴位螺旋CT扫描,层厚3.0mm,正常组采用不同重建间隔、阈值作气道表面遮盖法重建,病变组分别作气道SSD、RaySum重建和叠加成像。

A specific peptide according to FMDV NSPs B-cell epitopes was synthesized by a solid-phase method, and was conjugated with carrier protein BSA. An ELISA for detecting FMDV NSPs antibody was developed by using the conjugating protein as the coating antigen.

固相法合成特异性FMDV NSP B细胞表位肽,将其偶联在BSA载体蛋白上,作为抗原包被在ELISA板上,制备检测抗FMDV NSP抗体的ELISA试剂盒,并对该试剂盒进行方法考核。

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