微生物电阻抗传感器的研制

用自制的微生物传感器以及其它实验装置等，在一定条件下，通过测量接种细菌的培养基电阻抗值，利用微生物在生长繁殖过程中可使培养基的电阻抗值减低的现象，了解微生物生长繁殖的情况和规律，尝试进行微生物电阻抗传感器的研究，试验研究取得了预期的结果。     

影响微生物絮凝剂产出的因素

通过测定不同培养条件下制备的微生物产生菌培养液对高岭土悬浊液的絮凝性能，探讨了培养基，培养时间和温度等因素对微生物絮凝剂产出的影响，研究表明察氏培养基比原用培养基更为经济实用的适宜培养时间在3－8d之间，适合温度为30度，与絮凝剂产生菌的生长相比，微生物絮凝剂的产生时间稍有些滞后。     

用电阻抗法进行细菌耐药性试验

用自制的微生物电阻抗传感器和电阻抗测量装置,测量接种细菌的培养基电阻抗值,并将细菌在培养期间内取得的所有电阻抗值描记成阻抗曲线图谱.因正常细菌培养基所产生的阻抗曲线图谱与在细菌培养基中滴加了抗菌药物所形成的阻抗曲线图谱形态有明显差别,利用这种阻抗曲线图谱的形态差别来判断细菌的耐药性.该研究对实现医学临床快速耐药性试验,药敏检测自动化、智能化有一定的实际意义.     

微生物絮凝剂的研究进展

微生物絮凝剂是由微生物产生的有絮凝活性的代谢产物，广泛应用于污水处理及工业分离过程，其性能优于无机絮凝剂和有机高分子絮凝剂。概述了国内外微生物絮凝剂的研究现状，重点介绍了近期发现的性能优良的絮凝剂产生菌－－芽孢杆菌和假单胞菌培养基的组成和培养条件，评述了国内外研究微生物絮凝剂所采用的方法步骤，并提出了目前微生物絮凝剂研究中存在的问题，预测了微生物絮凝剂的应用市场及今后的研究方向。     

电阻抗法在细菌耐药性试验中的应用

将电阻抗法应用于医学临床细菌耐药性试验。笔者用自制的微生物电阻抗传感器和电阻抗测量装量,通过测量接种细菌的培养基电阻抗值(V值),并将细菌在培养期间内取得的所有V值描记成“阻抗曲线图谱”,因细菌培养基所产生的阻抗曲线图谱与在细菌培养基中滴加了抗菌药物所形成的阻抗曲线图谱形态有明显差别,利用这种曲线形态的差别尝试用来判断细菌的耐药性、该研究对实现医学临床快速耐药性试验,药敏检测自动化、智能化有一定的实际意义．     

加速器束晕控制中填充因子对束半径的影响

运用PIC多粒子模拟程序，采用延迟反馈控制器，通过数值模拟，研究了K－V分布束束晕－混沌控制中填充因子对离子束最大半径的影响。通过绘制最大半径随填充因子变化的曲线图，分析曲线图的特点，得到了对最大半径控制效果最好的区域，同时验证了呼吸模型的正确性。     

根据算子方程得到矩阵方程的新方法－基函数展开法

矩量法在计算电磁学中占有重要地位。矩量法是选择适当的基函数和权函数，进而得到矩阵方程。但该方法得到的阻抗矩阵是一个满阵，在复杂电磁学问题中，不论是阻抗矩阵填充还是求逆都会花费大量时间。提出了一种根据算子方程得到矩阵方程的新方法－基函数展开法，并给出应用该方法的一个例子。可看到该方法中不需要选择权函数，且阻抗矩阵是一个对角阵，从而大大节省阻抗矩阵填充时间和求逆时间。     

薄板中弯曲波的特性阻抗

对薄板波动方程的一般解应用边界条件得到无限大薄板中弯曲波的解。进一步得到弯矩特性阻抗和剪切力特性阻抗的表达式,并给出了阻抗的曲线图。     

按公路线形确定行车速度和燃油消耗

本文根据大量野外调查与实测数据,辅以理论分析,建立了公路线形与行车速度之间的关系。根据沿线行车速度和道路阻抗,可以估算燃油消耗量。采用本文提供的曲线图或电算程序,易于绘出某一给定公路沿线行车速度和燃油消耗变化的曲线图。本文的研究成果在公路方案的合理评价和优化设计中有实用意义。     

安全生产过程中的运用对策及分析HACCP 体系在微生物标准培养基

研究微生物标准培养基生产过程中培养皿和培养基的生产工艺，探讨 HACCP 体系在微生物标准培养基生产过程中的应用。对生产过程中各个环节可能造成的危害进行分析，确定培养皿成型(CCP1)、培养皿质量检测(CCP2)、营养物质提炼加工(CCP3)、培养基灭菌(CCP4)、培养基灌装(CCP5)、产品检漏(CCP6)、产品营养物质稳定性分析(CCP7)7个关键控制位点，对每一个关键控制位点提出相应的补救措施。通过建立微生物标准培养基安全生产过程中 HACCP 体系，专人专员进行质量监控，可将生产过程中的危害降到最低程度，以保证产品质量。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the