Xem 1-20 trên 577 kết quả Natural product
  • Natural product isolation, initial and bulk extraction, supercritical fluid extraction, an introduction to planar chromatography, crystallization in final stages of purification,... As the main contents of the document "Natural Products Isolation". Invite you to consult for additional documents for the academic needs and research.

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  • As early as the middle of the 19th century, scientists were beginning to isolate and characterize organic compounds from nature. Modern studies of the nature of natural products, those compounds not involved in primary metabolic processes, began in the 1930s and 1940s. In the decades that followed, scientists began to focus on why organisms produce these compounds.

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  • The Tertiary Publications Committee of the Chemical Society decided that after the appearance of Volume 5 the Specialist Periodical Report ‘Aliphatic Chem- istry’ should be replaced by two new titles: ‘General and Synthetic Methods’ and ‘Aliphatic and Related Natural Product Chemistry’. This latter will be produced biennially and this represents the first volume in this series.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Inhibition of NFκB by the natural product Withaferin A in cellular models of Cystic Fibrosis inflammation...

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Natural products that reduce rotavirus infectivity identified by a cell-based moderate-throughput screening assay

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  • Tuyển tập các báo cáo nghiên cứu khoa học ngành y học tạp chí Medical Sciences dành cho các bạn sinh viên ngành y tham khảo đề tài: Cell Cycle Arrest by a Natural Product via G2/M Checkpoint...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Anti-cancer natural products isolated from chinese medicinal herbs...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Using genomics to deliver natural products from symbiotic bacteria...

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  • Renewable natural resources in the forefront to save the environment and we must do our best to find applications suitable for them. The production process is shown by the method of casting, rolling process including monitoring throughout the process. Innovative testing procedures described in electrochemistry, ultrasonic pulse velocity, fracture toughness in the macro-micro mechanical behavior and more. The coordination between the components, laminas and building parts are checked by different principles....

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  • International research on natural resource management advances in impact assessment Increased concern about the environmental and natural resource implications of agriculture has given rise to an emphasis on research that calls attention to these issues in developing countries. National and international agricultural research systems, including the research Centres under the Consultative Group on International Agricultural Research (CGIAR), have intensified research on natural resource management (NRM) both in terms of budget allocation and priority setting.

    pdf289p huetay_1 28-02-2013 46 29   Download

  • In this important new book and presents the quintessential guide for gas engineers, emphasizing the practical aspects of natural gas production. Readers will learn to incorporate cutting-edge research in estimating reserves, evaluating the performance of fractured wells, processing gas, and material balance analysis; learn to evaluate future performance of gas reservoirs; learn to improve the performance of gas wells; and more.

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  • Forty-five years ago, agricultural and pharmaceutical chemistry appeared to be following divergent paths. On the agricultural scene industrial companies were concentrating on the synthesis of various classes of compounds and when a successful chemical candidate was discovered, there was a good deal of joy among the synthetic chemists. We were told that as a result of chemistry life would be better and, indeed, it was. Armed with synthetic agrochemicals, the American farmer became the envy of the world....

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  • Natural gas is a vital component of the world's supply of energy and an important source of many bulk chemicals and speciality chemicals. It is one of the cleanest, safest, and most useful of all energy sources, and helps to meet the world’s rising demand for cleaner energy into the future. However, exploring, producing and bringing gas to the user or converting gas into desired chemicals is a systematical engineering project, and every step requires thorough understanding of gas and the surrounding environment.

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  • Carbohydrate Biotechnology Protocols is aimed at those newcomers who have an interest in the production and use of carbohydrate materials, but have shied away from involvement for lack of detailed descriptions of appropriate methods, including the type of practical hints that may be provided by those skilled in those methods, but that are rarely described in research papers.

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  • Like most people, you have probably been taught to see money as a tangible resource that resides in your wallet and bank account until you need to spend it. You use it to pay bills, buy products and services, and support worthwhile causes. When you need more money, you probably do what most people would do: take physical action that will bring in more money, such as working extra hours, asking your boss for a raise, or even selling a few of your material possessions.

    pdf0p hkquoc 27-08-2010 54 10   Download

  • Sewage sludge as an uncalled for product of wastewater treatment poses the challenge to society of disposing of it, but at the same time gives us the opportunity of beneficial use by closing the cycle of nutrients: sludge derived from agricultural activity must return to soil if a sustainable and ecologically sound management of these materials is desirable (SEQUI et al. 2000). At present the major ways of disposing of sewage sludges are deposition, landfill and incineration, only part of the sludges are used in agriculture. ...

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  • Recently public attention has turned toward the intricate interrelation between economic growth and global warming. This book focuses on this nexus but broadens the framework to study this issue. Growth is seen as global growth, which affects the global environment and climate change. Global growth, in particular high economic growth rates, implies a fast depletion of renewable and nonrenewable resources. Thus the book deals with the impact of economic growth on the envi- ronment and the effect of the exhaustive use of natural resources as well as the reverse linkage.

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  • Tham khảo sách 'educational research and innovation the nature of learning', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • This book, now in its third edition, began almost 25 years ago when Weed Ecology: Implications for Vegetation Management was published in 1984. That text concentrated on the need for farmers, foresters, rangeland managers, and the researchers who advised them to understand better the biology of weeds and the role people play in creating and maintaining weeds in agriculture and other production systems. We were assisted in that first effort by the writings of many early scientists, such as J. L. Harper, H. G. Baker, and E. J.

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  • VNU Journal of Science, Natural Sciences and Technology 24 (2008) 280-286 In this study, primarily treating waste sludge rich of Cr, Ni, Fe,…generated from electroplating wastewater treatment plant and experimentally methods of utilizing wastes as inorganic pigment in production of bricks were carried out. Economic, technical and environmental efficiency and feasibility, bases to apply to practical conditions were evaluated. The results show that water accounts for about 70% of sludge. Contents of Ni, Cr and Fe are relatively high (20, 4.5 and 2.5%, respectively). ...

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