米邦塔食用仙人掌组培快繁的研究

用米邦塔食用仙人掌半成熟的茎片作外植体，经表面消毒和初代培养后建立了无菌材料。以“MS＋5.0mg/L KT 0.5-1.0mg/L BA 0.25-1.0mg/L NAA”作为增殖培养基可以获得理想的增殖效果，每块带有2－3个小芽的继代材料在该培养基上经50－60d培养可产生约20个丛生芽。在组培条件下，米邦塔食用仙人掌的茎呈圆柱形，而非自然条件下的掌状。根系的形成对外源激素和基本培养基种类等条件要求不严，即使在KT浓度高达10.0mg／L的增殖培养基上，丛芽的基部仍可形成较发达的根系.但比较理想的生根壮苗培养基为B5＋2.0-5.0mg/L NAA 0-0.5mg/L KT。组培小苗移栽到罩有塑料薄膜和遮阳网站的沙床上，成活率高达92．5％以上。移栽后11d时始见植株顶部增粗变扁；第64d时株高平均为9．98cm。掌片宽度平均为1．49cm，掌片长度为5．29cm。     

福利院儿童与普通儿童孤独感和人格特征的比较研究

通过量表法和访谈法，对福利院儿童与普通儿童的孤独感和人格特征进行比较。结果表明：（1）福利院儿童较普通儿童有更为强烈的孤独感体验；（2）福利院儿童在精神质和情绪性上均明显高于普通儿童；在内颇性上辐利院女童比普通女童更强。建议加强对福利院儿童的关怀、干预和教育。     

中国中小学信息技术教育的发展

在分析信息技术教育是教育发展的一个重要趋势的基础上，进一步剖析中国中小学信息技术教育发展中存在的主要问题，提出新世纪发展中国信息技术教育要更新教育观念、加大资金投入力度、有效整合现有资源、加强师资队伍建设，要改革教学方法，采用开设专门的信息技术课的教学模式实施中小信息技术教育。     

百分数抽检的不合理性

利用抽检特征曲线 ,分析百分数抽检的不合理性 ,并给出了改进的方法 .     

用BP神经网络法预测反相液相色谱保留值

运用逐步回归法筛选BP人工神经网络的输入元素改进BP网络的结构，并用于疏水分配常数及氢键作用能预测反相液相色谱保留值，结果表明，逐步回归法与人工神经网络相结合，能优化网络，大大提高网络收敛速度在很大程度上克服了通常BP网络过所合的缺点，较通常BP神经网络及回归法在处理构效关系方面有更强的信息处理能力和预测能力。     

Elastic wave scattering by two-dimensional periodical array of cylinders

We extend the multiple-scattering theory (MST) for elastic wave scattering and propagating in two-dimensional composite. The formalism for the band structure calculation is presented by taking into account the full vector character of the elastic wave. As a demonstration of application of the formalism we calculate the band structure of elastic wave propagating in a two-dimensional periodic arrangement of cylinders. The results manifest that the MST shows great promise in complementing the plane-wave (PW) approach for the study of elastic wave. Foundation item: Supported by the National Natural Science Foundation of China (No. 10174054) Biography: Mei Jun (1977-), male, Master candidate, research direction: the multiple scattering theory     

Effects of ubiquitin-protea-some pathway on mouse sperm capacitation, acrosome reaction and in vitro fertilization

Chlortetracycline (CTC) fluorescence patterns were used to study changes in the patterns B and AR of mouse sperm after incubation with reagents that would block the UPP. They were the monoclonal antibody against ubiquitinated proteins-UCP1; the polyclonal antibody against ubiquitin anti-Ub, and a special inhibitor against proteasome ALLN. Furthermore, we treated the capacitated sperm or the eggs with these reagents separately and tested whether the normal in vitro fertilization was blocked or not. Results illustrate that UCP1, anti-Ub, and ALLN have little effects on sperm capacitation and acrosome reaction,but they do inhibit fusion of mouse sperm with eggs, which suggests that UPP play an important role in mouse in vitro fertilization.``     

Characterization of Type p Banach Spaces by the Weak Law of Large Numbers

For weighted sums of the form ∑j＝1anjXnj where {anj, 1≤j≤kn ↑∞,n≥1 } is a real constantarray and {Xnj, 1≤j≤kn ,n≥1 } is a rowwise independent, zero mean, random element array in a real sep-arable Banach space of type p, we establish Lr convergence theorem and.a general weak law of large num-bers respectively, conversely, we characterize Banach spaces of type p in terms of convergence in r-thmean and probability for such weighted sums.     

Abnormal overpressure distribution and natural gas accumulation in foreland basins,Western China

Shizitan in Jixian County, Shanxi Province, is a site of transitional period from Paleolithic to Neolithic. The dating and the sporopollen analysis show that the middle reaches of the Yellow River where the site is located had been maintaining a steppe environment during 35.1-9.4 kaBP, in which, 35.1-17 kaBP belonged to the last glacial. With cold and dry climate, this period featured a desert steppe environment. In the late of this period, the area had a cold and half-humid steppe environment. The 17.0-11.9 kaBP belonged to the early- and mid-period of the last deglaciation. Mild and half-arid steppe alternates with mild and half-arid steppe, with a small amount of deciduous broadleaf species. During the period of 11.9-10.5 kaBP, cold and dry glacial climate appeared once more, featuring a desert steppe environment. During 10.5-9.4 kaBP, it is mild and half-arid, and later transited toward warm and half-humid. The early phase of this period featured a steppe environment and the later transited into a steppe environment with fairly more deciduous broadleaf species. Microlith, a mark of a transitional period from Paleolithic to Neolithic, was distributed mainly in 17.0-11.9 kaBP. The relatively warm, half-arid and fluctuating steppe environment in the early and medium period of the last deglaciation made a contribution to the appearance and development of Microlithic culture.     

职技高师企业管理概论课程教学改革初探

教学方法改革是提高教育教学质量的重要一环。本文对已实施“循环社会实践教学法”、“案例教学法”、“专题教学法”、“学生分组辩论法”等多项教学方法进行了总结。“循环社会实践教学法”强调了教学前、中、后三个环节有机的结合；“案例教学法”强调了通过案例分析，提高学生分析问题、解决问题的能力；“专题教学法”强调了激发学生研究热情、拓宽学生的视野；“学生分组辩论法”强调了学生驾驭知识的能力和综合素质的提高。