青霉素发酵毕业论文

论文题目是啥啊？压根不知道

同求。。留爪。。

Penicillin was QingMeiJun in fermentation metabolic process of secondary metabolites. Penicillin production is to determine the production capacity of strains, and internal factors in the process of fermentation process adjustment control, equipment structure, dynamic conditions, such as quality of raw material, which is the growth of bacteria, biosynthesis of environmental conditions. Both at home and abroad, to improve the general level of penicillin fermentation, reduce the consumption and manufacturing cost, it is to be in "breeding high strain and reform process, equipment and dynamic conditions", etc in test, research, seeking high yield, high. Therefore in the eighth five-year plan for national public projects, to solve the key technical problems are: 1) high strain breeding penicillin, 2 penicillin high technology research, Three new developed. Stir fermentation, Our team around the three aspects of the technology in public. In the us, including breeding in protoplast fusion had done the experiment, cross breeding methods, but according to what we have human, material conditions, main or mutation breeding and natural separation method combining. First, we examine the mutagen screening for more effective, QingMeiJun chemical compound processing factors, Secondly according to production conditions change, in order to ensure the filter is used to produce the strains of promotion. Through more than a screening and treatment, the application of mathematical statistic method, the scientific analysis of the test results obtained 18-26-93 high-yield mutations. Not only the original plant production capacity increase. And the result of rheological properties, matrix are superior to the strains (fermented liquid viscosity, matrix increased).In the process of research, the mathematical statistical method, with the unit price for the change of time validity, other parameters for the independent variables, the production of large and test data analysis. We recognize the appropriate process control is fully exert important means of inner potential strains. Green is a complicated mould fermentation process of many factors control engineering. Which is more strains in the metabolism of pH and the comprehensive reflection of factors, the balance of sugar is main control factors, process control, and we know that in different strains of equipment or oxygen condition should be adapted to the process and to show the potential. We have established a set of "flexible" mode, the practical process of change in the appropriate means of control, the dynamic process control to ensure the production management level of improving steadily. QingMeiJun aerobic bacteria, it is growing metabolism, synthesis of penicillin are required to have sufficient oxygen supply. For in the existing air supply under the condition of limited and mixing power under improve dissolved oxygen levels, can be improved by optimizing the purpose of mixing system. We use mechanics, fluid mechanics, from the current situation analysis, to improve gas bubbles, decentralized state liquid oxygen forms of exercise to improve the ability to target. Through the analysis and field tests, radial flow and axial flow from mixing, the advantages and disadvantages of the shaft, design, runoff and mixing combination of big height more air orientation wing of the tooth chip mixing system combined. Such a stir the mixture kettle, good effect, the current slightly lower, the air flow is not the circumstance, improve dissolved oxygen levels.

Looking at the situation at home and abroad, to enhance the level of penicillin fermentation, reducing consumption and manufacturing costs are in the "breeding high-yield strains, the reform process, optimizing the equipment, power conditions", etc. to carry out experiments, research work, in order to seek high-yield, high-efficiency . Therefore, in countries of "85" public relations project, sure you want to solve the main technical problems is: 1. Breeding high-yielding strains of penicillin; 2 penicillin high technology research; 3 fermentation stirring new is Penicillium metabolism in the fermentation process of secondary metabolites. Penicillin production capacity of bacteria is to determine the internal factors, while the fermentation process in the process of adjustment control, equipment structure, power conditions, the quality of raw materials which is the growth of bacteria, metabolism, biosynthesis of the environmental of all, we conducted a mutagen screening study, the more effective of Penicillium to deal with the physico-chemical complex factor; followed by screening in accordance with changes in the conditions of production conditions to ensure that the selection of strains used in the production of easy to focus on the project team carried out the three aspects of technology public relations. In strain selection, we have done our protoplast fusion experiments, cross breeding methods used, but we have the manpower, material conditions, mainly the use of mutation breeding and the natural method of combining the a multi-processing, a large number of screening and the application of statistical methods of mathematical analysis of scientific test results, which received high-yielding mutant 18-26-93. Not only to increase production capacity than the original strain of . And broth rheology, substrate use, etc. is better than the original strain (lower viscosity in fermentation broth, raise the utilization rate matrix).PH is a bacteria which metabolic factors in more than a reflection of the balance of sugar is the main control process control factors, and we recognize the bacteria at different oxygen equipment or a state of the technology should be adapted to be fully matched the performance of its the process, the use of methods of mathematical statistics to titer unit time changes as the dependent variable, other parameters as variables, a large number of production and test data so analyzed. We recognize that the appropriate process control is the inherent potential of strains to give full play an important means. Penicillium fermentation process is a complex multi-factor control supply in the existing conditions and limit the power of mixing to improve dissolved oxygen levels, can improve by optimizing the mixing system to achieve this purpose. We use mechanics, fluid mechanics and so on, starting from the existing analysis of the situation in order to improve the dispersion of liquid gas mixture, the form of bubbles movement to achieve the goal to increase oxygen have established a "flexible and practical process model", in view of changes in the use of appropriate means of control, dynamic control of process management to ensure steady increase in production levels. Penicillium is the aerobic bacteria, the growth and metabolism, synthesis of penicillin must be sufficient oxygen the analysis and on-site testing, for radial flow and axial flow mixing, their respective advantages and disadvantages of each other, self-designed shaft, the combination of runoff and mixing with a high degree of self-designed major multi-tooth chip modular wing air-driven mixing system. Such mixing kettle full of mixed results, and slightly lower in the current agitation, air flow does not increase, the increased level of dissolved oxygen.

这么专业的文章你至少应给200分，才会有人帮你

论化学与人类的密切相关性这一论文需要从化学的定位、人类的日常活动、化学与人类日常生活的关联三大部分去展开。用词要求相对客观、准确、精炼。

正文：

化学是最重要的基础学科之一，化学与众多领域都有很强的相关性，在生命体中有化学、在衣食住行中有化学、在日常生活及环境中有化学，我们身边无时无刻都存在着化学反应，化学与人类及人类活动都密切相关。

化学和物理一样是自然科学的基础学科。化学是建立在实验的基础上的一门自然学科，化学所涉及到的领域非常多，不只是我们的衣食住行离不开化学，化学还与很多学科互相渗透，如物理学、生物学、地理学等，也推动了其他学科和技术的发展。

化学主要是研究物质的性质、组成、结构、变化，以及物质间相互作用，认识物质的结构与性能，开发新的反应和合成技术，提供具有各种功能的材料。如：人类衣食住行的改善，“两弹一星”的研制，医药新技术的开发，DNA序列的分析等都紧密依赖化学学科的进步。

化学专业的基础课程有：无机化学、分析化学、仪器分析、有机化学、物理化学、高分子科学、结构化学、纳米功能材料等，以及无机化学实验、分析化学实验、仪器分析实验、有机化学实验、物理化学实验等实验性课程。

化学的研究方向较多，不同的学校课程开设会略有不同。

以武汉大学为例，化学专业必修的课有：

无机化学、分析化学、物理化学、有机化学、结构化学、化学实验安全技术、无机化学实验、分析化学实验、物理化学实验、有机化学实验、分子模拟实验、化工基础、化工基础实验、综合化学实验等。

化学专业选修课有：生物化学、高分子科学导论、有机波谱分析、中级有机化学、中级无机化学、中级物理化学、现代分析化学、材料化学、表面化学、生物无机化学、生物有机化学、化学生物学导论、有机合成化学、化学分离技术、能源化学、功能高分子、量子化学、工业电化学、现代电化学、高分子合成与表征等。

化学专业旨在培养具有良好人文和科学素质，具有社会责任感，创新意识和实践能力强，掌握化学基本知识、基本理论和基本技能，身心健康，能胜任化学及相关领域科研、教学及其他工作的人才。

化学专业学制一般为四年制，毕业后授予理学士学位。

主要就业方向包括如下几个方面：

1、从事化工产品生产的工艺试验、工业设计和生产技术组织的技术人员。化学工业是现今众多产业发展的基础，在国民经济中占有重要地位，是国家的基础产业和支柱产业，虽然近几年化工行业发展有些低迷，但就现有的整个行业的体量来说能够提供的就业岗位还是非常多的，收入方面相对也不错。

2、国内中小学校或教育培训机构，从事化学学科教师教学工作，从事教学工作是大部分师范院校化学专业毕业生的首选。近几年培训行业现今正处于高速发展的阶段，不论线上还是线下都发展迅速，进入培训机构也是一个选择。

3、从事药品研发、药品化学工艺合成及药品生产等工作，进入医药企业的学生不仅仅在化学方面学习出色，在生物方面也要有一定的实力，一般本科生大部分可以从事的工作多为辅助类的工作。此类工作在专业技术方面有较高的要求。

4、也可以继续深造，未来进入相关领域实验室或高校，继续从事相关领域研究或教学工作。