YI Zi li , YAN Qin quan , DENG Qi yun , LIU Xuan ming , ZHOU Pu hua , LI Xiang , CHU Cheng cai
Abstract:The new Indica restorer line 288,198,1125 and the male sterile line zhu1 s are the very important parents of two line hybrid rice.The in vitro culture and the genetic transformation of them were investigated. The high frequency system of regeneration an
Abstract:The "Companion Solution" and all the other formulas required in the meshless local boundary integral equation method for a thin plate were presented,in order to solve a thin plate problem using the above mentioned method.
Abstract:对二系杂交水稻亲本籼型恢复系288,198,1125和籼型不育系株1-s进行了离体培养和遗传转化的研究,建立了这些籼稻新品系的胚性愈伤组织高频诱导与再生系统及其基因枪转化系统,它们的胚性愈伤经分别可达87.4%,90.6%,78.8%和88.0%;其分化率分别可达60.0%,45.8%,46.9%和60.6%;其基因枪转化率分别可达16.69%,2.65%,2.04%和10.78%,并获得了一批可育的水稻转基因植株。
LIU Jun , LU Xiang yang , LIU Xuan ming , ZHOU Pu hua
Abstract:取库拉索芦荟 ( Aloe vera L .)的茎段、叶片作外植体接种于 MS附加不同激素的培养基上 ,诱导出丛生芽、微块茎、愈伤组织 ,将丛生芽、微块茎、愈伤组织分别用浓度为 0 .0 1% ,0 .0 2 % ,0 .0 5 %的秋水仙素以不同的方法和时间处理 ,丛生芽和微块茎能较好地诱出变异体 ,其中以 0 .0 2 %的秋水仙素棉球覆盖处理丛生芽 4 8h诱变效果最好 .变异体叶片肥厚、根粗壮 .筛选稳定的变异体继代 ,经染色体数目观察 ,二倍体植株染色体数目为 2 n=2×x=14 ,x=7,不同变异体染色体数目不同 ,其中 80 %以上的变异体细胞染色体数 2 n=4×x=2 8,x=7,为同源四倍体 .四倍体气孔器明显大于二倍体 .四倍体试管苗在 MS BA4 mg/l NAA0 .2 mg/l可以大量增殖 ,并于 1/2 MS NAA0 .3mg/l IAA0 .3mg/l培养基上诱大量根 .试管苗移栽成活率达 90 %以上 .
MENG Xiang xian , ZHANG Zhi guang , LIU Xuan ming , CHENG Zhuo hong , MENG Xiang hui
Abstract:测定了处于各个不同生长期的古尼虫草中虫草多糖、虫草氨基酸、虫草素三种活性物质的含量 .结果表明 :虫草多糖含量最高可达 2 8.2 mg/ g,氨基酸含量达 2 8.62 m g/ 10 0 mg干菌丝 ,虫草素含量达 13 5 0μg/ g.
LIU Bin , GAO Zhi hua , XU Jing , GUAN Yong jun , HE Chun mei , LIU Xuan ming , CHEN Zhu chu
Abstract:In order to investigate protein, mRNA expression of ING1 gene in nasopharyngeal carcinoma(NPC),a series of study was carried out by immuno histochemistry, RT PCR and PCR SSCP. The frequency of ING1 protein low expression is 70%(21/30) in NPC; the freq
ZHOU Fu zhao , ZHANG Zhong zhi , HU Xi yan
Abstract:The inverse problems of a class of positive semidefinite centro symmetric matrices were considered,the expression of the solution was provided.And the optimal approximation of this class of matrices was discussed,the existence and uniqueness of the solut
HUANG Sheng xiang , PENG Jing cui , XIA Hui , LI Hong jian , QU Xu
Abstract:The injection and transportation of carriers in single layer ppv film device were studied,and analysis under different conditions and the factors which affect the injecting current were discussed.The profiles of carrier density in ppv film were listed
Abstract:It is thought that the solar neutrino problem is mainly the competition reaction channel 7Be( 3He,p) 9B not to be considered in standard solar model,and the difference between the electron temperature and the ion temperature is not taken into account
Abstract:为了把无网格局部边界积分方程方法应用于求解板弯曲问题中,给出了板弯曲问题无网格局部边界积分方程方法所需要的友解及其全部公式。
Abstract:By means of a symbol of operation,the new analytical expressions of the frequency equation and the modal function of lateral vibration of a beam with lumped masses were derived.Furthermore,a reccursion formula of the operational symbol was introduced.It i
XU Xin hua , ZHANG Song lin , CHEN Ru yu
Abstract:The title compounds were synthesized by one pot reaction of hexaethyl phosphorous triamide,phthalimido ethanol,3 O alkyl glycerol,and sulfur.It's isolated yields was about 90%.
LUO Sheng lian , CHEN Jin hua , CHEN Fan , WEI Wan zhi
Abstract:The growth kinetics and the stability of synergistic films of benzotriazole (BTA) and halide ion (X -) were investigated by bulk acoustic wave (BAW) method.The results show that only I - in halide ions (F -,Cl -,Br -,I -) has synergistic effect with
Abstract:According to conditions of experiment and diagnosed transient components in discharge course of blend flowing of N 2 and H 2 by continuous real time mass spectrometry,the reaction path and steps of synthesizing ammonia were analysed,the standpoint of
YAN Hong ge , CHEN Zhen hua , CHEN Gang
Abstract:采用感应加热式的气相蒸发法制备了 Mg- Sb,Bi- Mg,Pb- Mg,Mg- Zn和 Sb- Zn五种合金的超微粉末 ,研究了超微粉末中的相生成规律及粉末粒子的形貌和组织特征 .在 5种合金的超微粉末中均未出现在其合金相图上不存在的化合物相或固溶体相 .在 Mg- Sb合金超微粉末中生成了β-Mg3Sb2 高温相 ,在 Bi- Mg合金超微粉末中生成了 γ- Mg3Bi相 ,在 Mg- Zn合金超微粉末中生成了ε- Mg Zn2相 ,在 Sb- Zn合金超微粉末中生成了 Sb Zn,Sb3Zn4 和 Zn3Sb2 化合物相 ;对于在相图上同时存在固溶体相和化合物相的 Pb- Mg合金 ,超微粉末中只生成了β- Mg2 Pb相 ,未发现固溶体相 .各种合金超微粉末粒子的形貌与相应的纯金属超微粉末的形貌不同 ,形状不规则 ,表面粗糙 ,含有化合物相的粒子衬度不均匀 ,为复相混合组织
WU Yi hu , YU Min , ZHANG Li jun , ZENG Li quan
Abstract:The static exhaust emission performance of automotive gasoline engines is influenced by a few factors such as engine's crankshaft rotate speed, load, air/fuel ration and spark timing, etc, the relationship between those factors and the engine exhaust emis
CAO Yin feng , ZHONG Zhi hua , LU Yuan zhi
Abstract:An inverse method was proposed for determination of material parameters employed in computer simulation. The experimental results were used to calculate material properties, using the finite element method combined with optimization techniques. The proced
TENG Zhao sheng , YANG Yu xiang , YANG Yan
Abstract:The accuracy and the reproducibility are important indexes of rapid moisture test.It is a technical problem,which should be solved immediately.The consistent test taking single chip microcomputer as the information processing kernel was discussed, a new
Abstract:The testability problem of analogue circuits and systems was discussed in a comprehensive way.The viewpoint of studying testability form,analysis and design was proposed.For the branch fault diagnosis approach of analogue circuits a number of new necessa
LI Cai ting , ZENG Guang ming , LIN Yu peng
Abstract:The appearance property and the rate of water needed of fly ash,and the fly ash cement mortar strength were studied when the raw fly ash and the activated fly ash were activated in machinery and chemistry process.The tests show that activation effect is d
Abstract:Some problems are pointed out when traditional foundation coefficient method is applied to the calculation of internal forces of stabilizing piles in rock masses.For these,firstly,the calculation formulae of internal forces of rigid stabilizing piles are
Abstract:The behavior of 12 typical concrete filled rectangular steel tubular (RST) compression loaded T connections and rectangular steel tubular (RST) compression loaded T connections was analyzed through finite element method.The load displacement curve
KE Shui zhou , CHENG Huan zhuang , WU Hui ying
Abstract:Applying dimensional analysis method,the K LA Coefficient of total oxygen transfer of mechanical aeration in wastewater treatment was studied.The mathemetical model of K LA was conducted by model test.The method of model amplification was expla
HU Feng song , YANG Guan zhong , ZHOU Xin , WU Guo rong
Abstract:Based on the web,the students' assignment assessment system of modern distance education is studied. Through analysis, design, and application, this system realizes the functions as automatic delivering, assessment recording, and feedback of students'assi
WU Ke shou , HUANG Hong wu , LIN Ya ping
Abstract:The security problems of internet were described.The authentication and encryption mechanism of IP security was seriously studied,and the security problems of IPSec protocols were analyzed.The value of IPSec to the practical applications is pointed out.
Abstract:A series of technology of developing distribution management information system based on Internet/Intranet was discussed,which includes architecture,principles of system designing and technology of database accessing. The Web based system structure is us