固氮菌和根瘤菌在城市污泥中驯化研究

固氮苗和根瘤菌是微生物肥料的主要有效菌，研究成功地对固氮菌和根瘤菌进行了驯化，试验表明，固氮菌可以在城市污泥中生长；根据瘤菌在８０％城市污泥中生长较好，在１００％城市污泥中可以生长，但受到一定的抑制，驯化菌和原菌在土壤中的适应性无明显差异，驯化菌在各种污泥中无明显差异。     

关于高校计算机文化基础课程教学方法改革的探索

计算机文化基础课程作为各个高校所有专业的必须课程，却不能受到学生的重视，甚至某些老师也对该课程产生应付不严肃的态度，文章针对这种情况分析其原因，并对该课程的教学方法提出一些建议．     

傅立叶变换与小波变换的比较教学

本文针对小波变换教学中小流变换概念理解困难的问题，提出了一种比较教学方法，通过分析小波变换与傅立叶变换之间的联系，并从四个方面进行对比，清楚地描述了小波变换的本质，从而对加深对小波变换的理解。     

一类多服务排队系统正解的存在性与渐进稳定性

运用算子半群理论讨论了一类多服务排队系统正解的存在唯一性,并证明了所得的半群为Markov半群.另外,进一步得到了系统的稳态解是渐进稳定的.     

First-order optimality condition of basis pursuit denoise problem

A new first-order optimality condition for the basis pursuit denoise （BPDN） problem is derived. This condition provides a new approach to choose the penalty param- eters adaptively for a fixed point iteration algorithm. Meanwhile, the result is extended to matrix completion which is a new field on the heel of the compressed sensing. The numerical experiments of sparse vector recovery and low-rank matrix completion show validity of the theoretic results.     

Transfer Ionization of Helium in Collisions with C^q＋ and O^q＋ （q =1 - 3）

Cross-section ratios σTI/σSC of transfer ionization （TI） to single capture （SC） of C^q＋- and O^q＋-He （q = 1 - 3） collisions in the energy range of 15-440 keV/u （0.8-4.2 vBohr） are experimentally determined. It is shown that σTI/σSC strongly depends on the projectile velocity, and there is a maximum for E（keV/u）/q1/2 ≈, 150. Combining the Bohr-Lindhard model and the statistical model, a theoretical estimate is presented, in reasonable agreement with the experimental data when E（keV//u）/q^1/2 〉 35.     

High-fidelity quantum memory realized via Wigner crystals of polar molecules

The collective excitations of spin states of an ensemble of polar molecules are studied as a candidate for high-fidelity quantum memory. To avoid the collisional properties of the molecules, they are arranged in dipolar crystals under one or two dimensional trapping conditions. We calculate the lifetime of the quantum memory by identifying the dominant decoherence mechanisms and estimating their effects on gate operations when a molecular ensemble qubit is transferred to a microwave cavity.     

企业并购价格的财务分析

如何确定企业并购的交易价格是企业并购决策的核心问题，也是买卖双方谈判的焦点。本文探讨了现金并购和换股并购中并购价格的弹性区间，并对其他财务影响因素进行分析，以弥补现有文献的缺陷，从而为企业并购决策提供客观公正的谈判基础。