General Secretary of the CPC Central Committee, Chairman of the Central Military Commission of the Communist Party of China Xi Jinping, Premier Wen Jiabao of the State Council, Li Keqiang, Zhang Dejiang, Yu Zhengsheng, Liu Yunshan, Wang Qishan and Zhang Gaoli, members of the Standing Committee of the Political Bureau of the CPC Central Committee, attended the meeting. Xi Jinping delivered an important speech at the meeting, analyzed the international and domestic economic situation, and proposed the overall requirements and main tasks of economic work next year. In his speech, Wen Jiabao summed up this year's economic work and made arrangements for economic work next year. Li Keqiang presided over the meeting and made a concluding speech at the end of the meeting. The meeting pointed out that since the beginning of this year, in the face of the increasingly severe international economic situation and the arduous task of domestic reform and development, the Party Central Committee and the State Council have united and led the entire party and the people of all nationalities, and adhered to the theme of scientific development to accelerate the transformation of economic development. On the main line, in accordance with the overall tone of the work of steady progress, we will strengthen and improve macroeconomic regulation and control in a timely manner, and put steady growth in a more important position. The economic and social development has shown a steady and positive trend. The economic operation was generally stable, the price increase was steadily falling, the agricultural basic status was further stabilized, and the overall social situation remained stable. New progress has been made in transforming the mode of economic development, new achievements have been made in technological innovation, new breakthroughs have been made in reform and opening up, and new achievements have been made in improving people's livelihood. The meeting stressed that now we are standing at a higher starting point. Comprehensive judgment, China's development still has rare opportunities and favorable conditions, the fundamentals of economic and social development have been better for a long time, the domestic market has great potential, the social productivity base is strong, the ability of scientific and technological innovation is enhanced, human resources are abundant, and the comprehensive advantages of production factors are obvious. The market economic system has been continuously improved. At the same time, we must also clearly see that China's development still faces many risks and challenges. Unbalanced, uncoordinated and unsustainable problems are still outstanding. The downward pressure on economic growth and the relative surplus of production capacity have intensified, and the production and operation costs of enterprises have risen. Problems with insufficient innovation capacity coexist, potential risks exist in the financial sector, and the contradiction between economic development and resources and environment is still outstanding. We must keep a clear mind, enhance our sense of urgency, analyze the causes behind the problems in depth, and take effective measures to solve them. The meeting believes that the international economic situation will remain complicated and full of variables next year. The slow growth of the world economy will continue, various forms of protectionism will rise significantly, the pressure of potential inflation and asset bubbles will increase, and the world economy will have developed rapidly before the crisis. The period entered a period of deep transformation adjustment. The meeting pointed out that from the perspective of the international environment, the basic judgment that China's development is still in an important strategic opportunity period has not changed. At the same time, the important strategic opportunities for China's development have undergone great changes in the connotation and conditions of the international environment. The opportunities we face are no longer the traditional opportunities of simply integrating into the global division of labor system, expanding exports, and accelerating investment. They are new opportunities for us to expand domestic demand, improve innovation capabilities, and promote the transformation of economic development patterns. We must profoundly understand, firmly grasp, and effectively use such new opportunities. We will work hard to achieve greater national interests in an ever-changing international environment. The meeting stressed that next year is the first year of comprehensive implementation of the spirit of the 18th National Congress of the Communist Party of China. It is a crucial year for the implementation of the 12th Five-Year Plan and is a crucial year for laying a solid foundation for building a well-off society in an all-round way. To do a good job in economic work next year, we must thoroughly study and fully implement the spirit of the 18th Party Congress, adhere to Deng Xiaoping Theory, the important thinking of the "Three Represents", and the scientific outlook on development, and focus on the main line of the theme to improve the quality of economic growth. And benefit as the center, steady progress, innovation, solid start, further deepen reform and opening up, further strengthen innovation drive, strengthen and improve macroeconomic regulation, actively expand domestic demand, increase strategic adjustment of economic structure, focus on safeguarding and improving People's livelihood, enhance the internal viability and motivation of economic development, maintain a stable overall price level, and achieve sustained and healthy economic development and social harmony and stability. The meeting held that to do a good job in economic work next year, we must continue to grasp the overall tone of the work of striving for stability and stability, based on the overall situation, highlighting key points, and laying a solid foundation in a down-to-earth manner. The meeting proposed the main tasks of economic work next year. First, strengthen and improve macroeconomic regulation and control, and promote sustained and healthy economic development. We must adhere to the strategic thinking that development is the last word, and we must not waver in the slightest. The 18th National Congress of the Communist Party of China emphasized that to promote sustained and healthy economic development, it is required to respect economic laws, quality, efficiency, and sustainable speed. It is required to achieve growth in the continuous transformation of economic development mode and continuous optimization of economic structure. We must firmly grasp the strategic basis for expanding domestic demand, foster a number of strong consumer growth points, enhance the fundamental role of consumption in economic growth, and play a key role in investment for economic growth. It is necessary to increase and guide private investment, and at the same time increase public investment in infrastructure areas that lay the foundation, benefit the long-term, benefit the people's livelihood, and will not cause redundant construction. We must continue to implement a proactive fiscal policy and a prudent monetary policy, and give full play to the role of countercyclical adjustment and structural adjustment. To implement a proactive fiscal policy, we must improve the structural tax reduction policy in conjunction with the tax reform. Governments at all levels must implement strict economy, strictly control general expenditures, and use the money in the cutting edge. To implement a prudent monetary policy, we must pay attention to the degree of goodness and enhance the flexibility of operation. It is necessary to appropriately expand the total scale of social financing, maintain a moderate increase in loans, maintain the basic stability of the RMB exchange rate, and effectively reduce the financing costs of the development of the real economy. It is necessary to continue to adhere to the real estate market regulation and control policy. We must attach great importance to the hidden risks in the financial and financial fields and resolutely hold the bottom line of non-systematic and regional financial risks. Second, consolidate the agricultural foundation and guarantee the supply of agricultural products. To solve the "three rural issues" as the top priority of the party's work, we must persist in it for a long time and never waver. We must not neglect and relax agriculture because of the bumper harvest. China has a population of 1.3 billion. Only by keeping the rice bowl in its hands can we maintain the overall stability of the society. It is necessary to improve the comprehensive agricultural production capacity, strictly protect cultivated land, greatly promote farmland water conservancy, strengthen scientific and technological services, and continuously improve the level of agricultural material technology and equipment. It is necessary to stabilize and improve the policy of strengthening agriculture, benefiting farmers and enriching farmers, fully protecting and mobilizing the enthusiasm of farmers for production and management, so that farming and farming can be profitable, not disadvantaged, and affordable. On the basis of adhering to and improving the basic rural management system, we must innovate the agricultural management system and accelerate the development of modern agriculture. It is necessary to strengthen green production and ensure the quality and safety of agricultural products from the source. Third, accelerate the adjustment of the industrial structure and improve the overall quality of the industry. To achieve respect for economic laws, quality, efficiency, and sustainable development, the key is to deepen the strategic adjustment of industrial structure. It is necessary to make full use of the reverse mechanism formed by the international financial crisis, and to resolve the contradiction of overcapacity as the focus of work. The general principle is to respect the law, separate policies, multi-pronged approach, and both the symptoms and the root causes. It is necessary to strengthen the forecast of the development trend of various overcapacity industries and formulate targeted adjustment and resolution plans. We must focus on enhancing the new driving force for innovation-driven development, focusing on the development of entrepreneurial talents, accelerating scientific and technological innovation, and strengthening product innovation, brand innovation, industrial organization innovation, and business model innovation. It is necessary to rationally arrange the layout of productivity, and must adhere to a national chess game, overall planning, and scientific layout for major projects that have a vital lifeline and significant economies of scale. Fourth, actively and steadily promote urbanization and focus on improving the quality of urbanization. Urbanization is the historical task of China's modernization construction, and it is also the greatest potential for expanding domestic demand. It is necessary to focus on improving the quality of urbanization, taking advantage of the situation, promoting profit and avoiding harm, and actively guiding the healthy development of urbanization. To build a scientific and rational urban structure, large, medium and small cities and small towns and urban agglomerations must be scientifically arranged, closely linked with regional economic development and industrial layout, and adapted to the carrying capacity of resources and environment. It is necessary to take the orderly promotion of the urbanization of the agricultural transfer population as an important task. We must fully integrate the concepts and principles of ecological civilization into the whole process of urbanization, and adopt a new urbanization path of intensive, intelligent, green and low-carbon. Fifth, strengthen people's livelihood security and improve people's living standards. We must do a good job in people's livelihood in accordance with the idea of ​​"holding the bottom line, highlighting key points, perfecting the system, and guiding public opinion." We will focus on ensuring the basic living of low-income people and do a good job in subsidizing students with family difficulties. It is necessary to pay attention to stabilizing and expanding employment, and doing a good job in youth employment with a focus on college graduates. We must treat and support the development of small and micro enterprises and strengthen the social responsibility of large enterprises. It is necessary to strengthen the construction of urban and rural social security systems, continue to improve the transfer and connection methods for old-age insurance, and raise the level of overall planning. We must continue to strengthen the construction and management of affordable housing and accelerate the transformation of shanty towns. It is necessary to guide the masses to establish the concept of improving life through diligence and wealth, so that improving people's livelihood is not only the direction of the party and the government, but also the goal of the people themselves. The meeting stressed that to do a good job in economic work next year, we must speed up the adjustment of the economic structure and transform the economic development mode so that the sustained and healthy development of the economy is based on the expansion of domestic demand; we must not relax the work of “agriculture, rural areas and farmers†and promote the development of urban and rural integration. We must adhere to the implementation of the strategy of rejuvenating the country through science and education and enhance the core supporting capacity for economic and social development; we must persist in putting the interests of the people first, further safeguard and improve people's livelihood, and make development results more and more equitable for all people; We will deepen reforms and resolutely remove all obstacles and institutional and institutional obstacles that hinder scientific development; we must implement more proactive open strategies, create new competitive advantages, and comprehensively improve the level of open economy.
Rotary evaporator rotovap machine is for evaporation and crystallization under vacuum pressure
Chemistry rotary evaporator concentrator or evaporator crystallizer with different material such as high borosilicate glass rotary evaporator and stainless steel evaporators and always used for lab chemical chemistry use or beverages, sample pharmaceutical engineering
Laboratory instruments rotary evaporators are mainly used for continuous distillation of large quantities of volatile solvents under reduced pressure. In particular, the reaction products can be separated and purified by the concentration of extraction solution and the distillation of the receiving solution during chromatographic separation. The basic principle of a rotaryvaporizer is reduced pressure distillation, that is,under reduced pressure, when the solvent is distilled, the distillation flask is continuously rotating
Structure: The distillation flask is a pear-shaped or round-bottom flask with a standard grinding interface, connected to a pressure relief pump by a high reflux serpentine condensing tube, and another opening of the reflux condensing tube is connected to a receiving flask with a grinding mouth for receiving the evaporated organic solvent. There is a three-way piston between the condensing tube and the decompression pump. When the system is communicated with the atmosphere, the distillation flask and the liquid flask can be removed and the solvent can be transferred. When the system is communicated with the decompression pump, the system should be in the state of decompression. When using, it should be DECOMpressed first, and then start the motor to rotate the distillation flask. At the end, it should be shut down first, and then air through to prevent the distillation flask from falling off in the rotation. As a heat source for distillation, it is often equipped with a corresponding constant temperature water tank.
Glass reactor mainly uses its double layer of glass characteristics, we can place the reaction material in the middle of the sandwich, through the atmospheric pressure or negative pressure under the condition of stirring reaction. In this way, the medium inside the interlayer of the glass reactor (such as freezing liquid, heating water or heating oil) can be heated or cooled by stirring in a circular reaction. It is widely used as an ideal equipment in modern biochemical new material synthesis experiments
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