Zn^2＋和复方新诺明（SMZ—TMP）对小麦种子发芽及幼苗？…

Ｚｎ＾２＋和ＳＭＺ－ＴＭＰ对小麦种子的发芽率没有显影响，但０．０９％Ｚｎ＾２＋０．５ｍｇ／ＬＳＭＺ－ＴＭＰ的处理液可提高其发芽指数、活力指数、幼苗长度、幼苗叶片叶绿素含量和幼苗根系活力，且０．１２％Ｚｎ＾２＋＋０．５ｍｇ／ＬＳＭＺ－ＴＭＰ处理液能提高小麦幼苗中α－淀粉酶活性。     

月季组培快繁技术研究

利用月季为材料，进行较大规模组培快繁技术研究，改进了表面灭菌，效果较好．ＭＳ＋ＢＡ０．５诱导腋芽萌发成枝较好；ＭＳ＋ＢＡ１．０＋ＮＡＡ０．１用于伊丽莎白及黄和平增殖较好，而ＭＳ＋ＢＡ２＋ＮＡＡ０．１用于黄玫瑰增殖较好，萨蔓莎及维莎则用ＭＳ＋ＢＡ３＋ＮＡＡ０．１较好；ＭＳ＋ＢＡ０．１～０．２＋ＮＡＡ０．１用于各品种月季壮苗效果都理想；０．５ＭＳ＋ＩＢＡ０．２～０．５＋活性炭５ｇ／Ｌ能较好诱导各品种试管苗生根，但黄玫瑰用ＮＡＡ０．２代替ＩＢＡ效果更理想．本文还研究了培养基中替代物使用，提出了与前人不同的观点     

Zn2+和复方新诺明(SMZ-TMP)对小麦种子发芽及幼苗生长的影响

Ｚｎ２＋ 和 Ｓ Ｍ Ｚ Ｔ Ｍ Ｐ 对小麦种子的发芽率没有显著影响,但 ０．０９％ Ｚｎ２＋ ＋ ０．５ｍ ｇ／ Ｌ Ｓ Ｍ Ｚ Ｔ Ｍ Ｐ 的处理液可提高其发芽指数、活力指数、幼苗长度、幼苗叶片叶绿素含量和幼苗根系活力,且０．１２％ Ｚｎ２＋ ＋ ０．５ｍ ｇ／ Ｌ Ｓ Ｍ Ｚ Ｔ Ｍ Ｐ 处理液能提高小麦幼苗中α—淀粉酶活性     

Ba和Mg掺杂对Bi（Pb）—Sr—Ca—Cu—O超导性能的影响

采用固态反应法制备了名义组分为Ｂｉ１．８Ｐｂ０．２Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ和Ｂｉ０．９Ｐｂ０．１Ｂａ０．１Ｍｇ０．１Ｓｒ０．８ＣａＣｕ２Ｏｘ超导样品，并研究了Ｂａ，Ｍｇ掺杂对Ｂｉ系超导性能的影响。用Ｘ射线衍射及电阻－温度关系的测量获得的实验结果表明，添加Ｂａ和Ｍｇ元素可以有效地抑制Ｂｉ系２２１２相的生成，促进２２２３相的形成，并能提高超导材料的Ｔｃ。     

La0.8Sr0.2MnO3＋λ负载于α,γ—Al2O3上作为燃烧催化剂的研究

Ｌａ０．８Ｓｒ０．２ＭｎＯ３＋λ负载于α,γ－Ａｌ２Ｏ３上作为燃烧催化剂的研究高丽蓉,孙燕华,沈岳年（内蒙古大学化学系,０１００２１,呼和浩特）ＳｔｕｄｉｅｓｏｎＬａ０．８Ｓｒ０．２ＭｎＯ３＋λＬｏａｄｉｎｇｏｎα,γ－Ａｌ２Ｏ３ａｓａＣｏｍｂｕｓｔ...     

Ba和Mg掺杂对Bi（Pb）－Sr－Ca－Cu－O超导性能的影响

采用固态反应法制备了名义组分为Ｂｉ１．８Ｐｂ０．２Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ和Ｂｉ０．９Ｐｂ０．１Ｂａ０．１Ｍｇ０．１Ｓｒ０．８ＣａＣｕ２Ｏｘ超导样品，并研究了Ｂａ、Ｍｇ掺杂对Ｂｉ系超导性能的影响。用ｘ射线衍射及电阻－温度关系的测量获得的实验结果表明，添加Ｂａ和Ｍｇ元素可以有效地抑制Ｂｉ系２２１２相的生成，促进２２２３相的形成，并能提高超导材料的Ｔｃ．     

植物生长调节剂和蔗糖对抗黑胫病香果树丛芽分化的影响

将抗黑胫病香果树愈伤组织在ＢＡ、ＮＡＡ、蔗糖３因素条件下作Ｌ＿９（３￣４）正交组织培养试验．结果表明，ＢＡ、ＢＡ与ＮＡＡ的交互作用对抗病香果树愈伤组织丛芽分化有极显著影响．ＢＡ／ＮＮＡ（Ｘ）与芽分化（Ｙ）的关系为Ｙ＝１．３６５１Ｘ￣（０．１２８６），ＢＡ／ＮＡＡ（Ｘ）和ＢＡ＋ＮＡＡ（Ｙ）与芽分化（Ｚ）的关系为Ｚ＝１．１０３３＋０．０９９９（Ｘ＋Ｙ）－０．００２７（Ｘ＋Ｙ）￣２，ＢＡ／ＮＡＡ（Ｘ）和蔗糖浓度（Ｙ）与芽分化（Ｚ）的关系为Ｚ＝１．０７４０＋０．０７９３（Ｘ＋Ｙ）－０．００１７（Ｘ＋Ｙ）￣２．在本该试验范围内，丛芽分化的最适培养基为ＭＳ＋ＢＡ２ｍｇ／Ｌ＋ＮＡＡ０．１ｍｇ／Ｌ＋蔗糖３％．     

菊花的离体培养

菊花的离体培养以ＭＳ＋ＮＡＡ０．５ｍｇ·Ｌ－１(单位,下同)＋ＢＡ５或ＭＳ＋ＮＡＡ ０．１＋ＢＡ２诱导愈伤组织,以ＭＳ＋ＢＡ２＋ＫＴ０．２分化芽丛及进行芽丛增殖,以１/２ＭＳ＋ＮＡＡ０．１生根培养,在基质椰糠:砂＝１:１中移栽成苗。也可在ＭＳ＋ＮＡＡ０．１＋ＢＡ ２诱导愈伤组织并直接形成芽丛,而后进行增殖培养。还可在增殖培养基中直接生根。     

镍电解液萃取净化研究-用二(2.6-二甲基-4-庚基)磷酸萃取净化流程的数学模型及最优化计算

本文提出用二（２．６－二甲基－４－庚基）磷酸［ＨＤ（ＤＩＢＭ）Ｐ］作为萃取剂，用于镍阳极电解液中的Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋和Ｆｅ３＋的萃取分离流程。在一定的工艺条件下，测定了各种金属离子的平衡数据，建立了Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋和Ｆｅ３＋的分配模型。并在此基础上，针对含有 １４０ 克／升 ＳＯ４－２和 ４０克／升 Ｃｌ－的镍阳极电解液体系对其中 Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋分离工艺进行了最优计算，并确定了水法处理该溶液的萃取流程。所得最优工艺参数为：温度＝５０℃；ＨＤ（ＤＩＢＭ）Ｐ浓度＝０．２３Ｍ； ｐＨ＝５，７４； ３级，有机相对于水相流比Ｏ／Ａ＝０．３１。此时，镍回收率为９９％，钴回收率为９４．１％，铜回收率为９９．９９％。此项研究由北京第五研究所提供萃取剂。     

偶氮胂III光度法测定水中钙镁

基于Ｃａ＾２＋、Ｍｇ＾２－与偶氮胂ＩＩＩ的络合作用,建立了二的光度测定方法。Ｃａ＾２＋、Ｍｇ２＋分别在０～１．２ｍｇ／Ｌ、０～０．６４ｍｇ／Ｌ范围内服从比尔定律,已用于清洁水样中Ｃａ＾２＋、Ｍｇ２＋的测定。     

二元序列的翻转与对换排序

序列的翻转与对换的排序问题因在基因组比较中的应用而受到关注．考虑二元序列的翻转与对换的排序问题，分别给出了二元序列的翻转排序与对换排序的近似算法．     

用修正学习曲线测算井段的钻井时间

将学习曲线与传统的分段方法结合起来,既克服了分段法中不考虑学习效果的缺陷,又克报了学习曲线中不能灵活调整的缺陷,形成两种方法的优点叠加．用学习曲线测算井段的钻井时间,其前提条件是：各井在该井段的钻头选型基本相同,井段直径相同,所穿过的地层相同,所属的井型相同．对钻井参数（钻压、转速、泵压、排量）、泥浆密度与性能、喷嘴直径与个数等时变性因素,不单独列出,而作为在钻井过程中通过逐步学习加以改善的对象．用塔北某地区１号构造上所钻井的二开井段（４４４．５ｍｍ）实际资料测算,得到的结果明显优于钻井监督的计划时间,测算的最大相对误差１１．８％,平均为８．８％,而监督组计划误差为４１．９％,平均误差率降低了一半以上．     

Replication by human DNA polymerase-iota occurs by Hoogsteen base-pairing

Almost all DNA polymerases show a strong preference for incorporating the nucleotide that forms the correct Watson-Crick base pair with the template base. In addition, the catalytic efficiencies with which any given polymerase forms the four possible correct base pairs are roughly the same. Human DNA polymerase-iota (hPoliota), a member of the Y family of DNA polymerases, is an exception to these rules. hPoliota incorporates the correct nucleotide opposite a template adenine with a several hundred to several thousand fold greater efficiency than it incorporates the correct nucleotide opposite a template thymine, whereas its efficiency for correct nucleotide incorporation opposite a template guanine or cytosine is intermediate between these two extremes. Here we present the crystal structure of hPoliota bound to a template primer and an incoming nucleotide. The structure reveals a polymerase that is 'specialized' for Hoogsteen base-pairing, whereby the templating base is driven to the syn conformation. Hoogsteen base-pairing offers a basis for the varied efficiencies and fidelities of hPoliota opposite different template bases, and it provides an elegant mechanism for promoting replication through minor-groove purine adducts that interfere with replication.     

基于Fenton反应的羟基自由基对胶原蛋白的氧化降解作用

研究了Fenton反应产生的羟基自由基对Ⅰ型胶原蛋白的降解作用。单独的过氧化氢(H2O2),Fe2+以及超氧阴离子自由基(O2-·)均对胶原蛋白无降解作用。但是,在经过氧化氢和Fe2+构成的Fenton反应产生羟基自由基后,胶原蛋白发生了降解。胶原蛋白的降解作用随着羟基自由基的增加(H2O2+Fe2+浓度增加)而加强。但羟基自由基的生成是瞬间完成的,其对胶原蛋白的降解作用随着H2O2和Fe2+反应时间的延长而降低。     

Self powered systems by nanogenerators and smart MEMS by piezotronics

Developing wireless nanodevices and nanosystems is of critical importance for sensing, medical science, environmental/infrastructure monitoring, defense technology and even personal electronics. It is highly desirable for wireless devices to be self powered without using battery, without which most of the sensor network may be impossible. The piezoelectric nanogenerators have the potential to serve as self sufficient power sources for micro/nano systems. For wurtzite structures that have non central symmetry, such as ZnO, GaN and InN, a piezoelectric potential (piezopotential) is created in the crystal by applying a strain. The nanogenerator is invented by using the piezopotential as the driving force for electrons to flow in respond to a dynamic straining of piezoelectric nanowires. A gentle straining can produce an output voltage of up to 20～50 V from an integrated nanogenerator. Furthermore, piezopotential in the wurtzite structure can serve as gate voltage that can effectively tune/control the charge transport across an interface/junction; electronics fabricated based on such a mechanism is coined as piezotronics, with applications in force/pressure triggered/controlled electronic devices, sensors, logic units and memory. By using the piezotronic effect, it is showed that the optoelectronic devices fabricated using wurtzite materials can have superior performance as solar cell, photon detector and light emitting diode. Piezotronic is likely to serve as “mechanosensation” for directly interfacing biomechanical action with silicon based technology and active flexible electronics. The paper gives a brief review about the basis of nanogenertors and piezotronics and their potential applications in smart MEMS (micro electro mechanical systems).     

激光晶化多晶硅的制备与XRD谱

对氢化非晶硅（a-Si∶H）进行了脱氢和不同能量密 度的准分子激光晶化多晶硅的实验, 对所得样品用X射线衍射表征. 针对多晶硅（111）面特征峰的强度、 晶面间距和宽化信息, 分析了激光功率密度对晶化多晶硅结晶度和应力的影响, 根据谢乐公式（Scherrer）估算了晶粒的大小, 得到用准分子激光晶化多晶硅的较佳工艺参数, 并且验证了激光辐射对薄膜材料作用的3种情况.