13 research outputs found

    生物离子分子组学计划( Bio-imOmics Project:BiP)

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    “imOmics 离子分子组学”是对生命与非生命物质与外界环境进行离子和分子交换过程的整体研究。依据研究的对象不同可以分为: • “非生物离子分子组学计划(Abiotic imOmics Project:AiP)” • “生物离子分子组学计划(Bio-imOmics Project:BiP)” 生物离子分子组学计划(Bio-imOmics Project:BiP)是利用现代NMT非损伤微测技术等活体离子分子检测技术,结合现代计算机人工智能等科技及生物信息学方法,对生物个体及其各层级组成与外部环境之间,以离子和分子形式进行能量和信息交换的过程,进行系统的、可量化的研究,从整体活体生理机制水平上拓展人类对生命现象的认知和利用

    Ultrastructural comparison of the spermatozoa in three species of abalone

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    1 引言 动物精子超微结构的研究是受精生物学的重要基础,而且由于系统分类的不同其精子的超微结构也伴随着演化,因此,研究和比较分类相似种的精子超微结构,可以作为鉴别种类的辅助依据,同时在动物杂交育种的细胞遗传学分析中也有一定的参考价值。国家海洋‘863’高科技计划资助项目(2001AA62108);; 福建省自然科学基金(9820002

    PRELIMINARY STUDIES ON HYBRIDIZATION OF THREE SPECIES OF ABALONE

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    于1998~1999年在福建厦门和东山两地养殖场 ,对我国主要养殖鲍即杂色鲍与皱纹盘鲍、盘鲍进行杂交试验。结果表明 ,皱♂×杂♀的受精率为3.5%~15.0 % ,平均7.6 %。皱♀×杂♂的受精率为1.5%~4.0% ,平均2.8 %。杂交成功的受精卵的胚胎和幼体发育均正常。杂色鲍×盘鲍杂交组合的受精率明显高于杂色鲍×皱纹盘鲍 ,无论哪个组合杂色鲍作为雌性亲本的杂交受精率均比反交大大提高。The gametic hybridization of Haliotis diversicolor supertext with H. discus hannai and H. Discus were studied in Fujian coast. The fertilization rate of H. discus hannai♂×H.diversicolor supertext♀ was 3.5% 15.0%,averaging 7.6%. The fertilization rate of H. discus hannai♀×H. diversicolor supertext♂ was 0% 2.8% with average 1.2%. The fertilization rate of H.discus ♂×H.diversicolor supertext♀ was 1.0% 53.6% with average 22.1%. The fertilization rate of H.discus ×H. diversicolor supertext♂ was 1.5% 4.0%, averaging 2.8%. The fertilized eggs obtained by hybridization would develop regularly to the veliger larvae. The fertilization rate of H. diversicolor supertext×H. discus was obviously highter than H. diversicolor supertext×H. discus hannai. The fertilization rate of the group using H. diversicolor supertext as the maternal form was much higher than the group using it as the agnation.福建省自然科学基金!重点资助项目9820002

    利用飞秒激光制备金属-半导体接触电极的方法

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    一种利用飞秒激光制备金属-半导体接触电极的方法,包括如下步骤:步骤1:在晶片表面涂布抗蚀剂;步骤2:采用飞秒激光直写技术,在抗蚀剂表面形成图形;步骤3:采用电子束蒸发技术,在图形的表面蒸发金属,使金属附着于图形的上面,同时该金属还附着于剩余抗蚀剂的上面;步骤4:剥离晶片表面涂布的抗蚀剂,并同时剥离掉抗蚀剂上面的金属,得到金属-半导体接触电极

    对砷化镓太阳电池帽层进行选择性腐蚀的化学腐蚀液

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    本发明公开了一种对砷化镓太阳电池帽层进行选择性腐蚀的化学腐蚀液,该化学腐蚀液的配比为1g固体柠檬酸与3~4ml的双氧水,实现了对Al组分为0.8~0.9的砷化镓太阳电池帽层Al0.8~0.9GaAs/GaAs的选择性腐蚀。本发明提供的这种对砷化镓太阳电池帽层进行选择性腐蚀的化学腐蚀液,具有高的选择性腐蚀,能够实现GaAs太阳电池帽层选择腐蚀的目的,并且腐蚀液配制方便,具有很好的重复性

    高迁移率量子点场效应晶体管及其制作方法

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    一种高迁移率量子点场效应晶体管,包括:一衬底;一第一应力缓冲层制作在衬底上;一第二应力缓冲层制作在第一应力缓冲层上;一掺杂层制作在第二应力缓冲层上;一间隔层制作在掺杂层上;一沟道层制作在间隔层上;一下势垒层制作在沟道层上;一量子点层制作在下势垒层上;一上势垒层制作在量子点层上,该上势垒层上面的中间有一凹形台面,该凹形台面的一侧为源区,另一侧为漏区;两帽层,该两帽层分别制作在上势垒层两侧的源区和漏区上;一第一电极制作在一帽层的上面;一第二电极制作在另一帽层的上面;一第三电极制作在上势垒层上面的凹形台面上

    内嵌InAs量子点的场效应晶体管特性研究

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    研究了内嵌InAs量子点的异质结场效应晶体管在室温和低温下的电学特性, 获得了量子点影响下器件的输出特性曲线. 在室温下, 通过分别测试在近红外光照和量子点充电条件下器件的 I-V特性, 证明了量子点通过类似纳米悬浮栅的作用, 对邻近沟道的二维电子气施加影响. 在 低温下观察到器件漏电流出现负微分电导现象. 这一现象可由2DEG和量子点之间的共振隧穿来解释. 这些结果提供了一种新的操作传统场效应晶体管的方法, 并有望制成新型量子点存储

    应用原生动物群落评价枯水期白洋淀的水质现状

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    应用PFU微型生物群落监测方法,对长期处于低水位状态下的白洋淀水质进行了综合评价。结果表明,白洋淀水域受府河污水的影响,淀内的内源性污染,对原生动物群落造成了极大的影响。与20世纪90年代的资料相比,淀内中心区4个采样点原生动物的群集种类数(1d)急剧下降,而丰度上升了1.28倍,表明内源性污染对白洋淀水质的影响加剧

    Simulations of the effect of particle size on texture and force transmission in bidisperse granular composites

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    The objective of this study is to investigate the influence of the particle size ratio on texture and force transmission in two-dimensional cohesionless binary granular composties by using molecular dynamics (MD) simulations. Four numerical composite samples, which differ in terms of the particle size ratios, are used in this study. The samples are composed of two constitutive materials with a stiffness ratio of four between the higher one termed as stiff particle and another termed as soft particle. The samples are subjected to an uniaxial confined vertical compression on the upper wall. The results under static conditions show that the particle size ratio mainly affects the contact sub-networks. The coordination number decreases when the particle size ratios (Dstiff/Dsoft = 1.2 − 3.0) increase, contrary to stiff-any case. Considering the spatial arrangement of contact directions, contacts between stiff particles exhibit an anisotropic distribution. On the contrary, the other contacts, i.e. soft-soft and stiff-soft contacts play a role to support the granular system in equilibrium. It is interesting to note that for all the particle size ratios, an exponential distribution and power-law are observed for the strong and weak network, respectively. Furthermore, almost 60% of the entire contacts transmit the weak forces
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