Xem 1-20 trên 140 kết quả Biological tools
  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Integration of molecular biology tools for identifying promoters and genes abundantly expressed in flowers of Oncidium Gower Ramsey

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  • As a scientist who has worked for more than 40 years to find cures for infectious disease, I find the idea that terrorists would use biological agents as a weapon to be anathema. It violates the fundamental values of the life sciences that I and my colleagues hold dear: that science is a vital tool for improving life and the health of our planet and enhancing our understanding of the natural world. My own work has focused on cholera, a disease responsible for the death of thousands of people around the world every year.

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  • Published: 5 April 2004 Genome Biology 2004, 5:R37 The electronic version of this article is the complete one and can be found online at http://genomebiology.com/2004/5/5/R37 Received: 15 January 2004 Revised: 26 February 2004 Accepted: 11 March 2004 reports © 2004 Baerends et al.; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and

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  • Cholesterol oxidase is a bacterial FAD-containing flavooxidase that catalyzes the first reaction in cholesterol catabolism. Indeed, this enzyme catalyzes two reactions: the oxidation of the C3 -OH group of cholesterol (and other sterols) to give cholest-5-en-3-one; and its isomerization to cholest-4-en-3-one. In the past several years, the structural and functional characterization of choles-terol oxidase has been developed together with its application as a biological tool.

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  • Cone snails comprise500 species of venomous molluscs, which have evolved the ability to generate multiple toxins with varied and often exquisite selectivity. One class, the a-conotoxins, is proving to be a powerful tool for the differentiation of nicotinic acetylcholine receptors (nAChRs). These comprise a large family of complex subtypes, whose significance in physiological functions and pathological conditions is increasingly becoming apparent.

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  • In this paper, we demonstrate three NLP applications of the BioLexicon, which is a lexical resource tailored to the biology domain. The applications consist of a dictionary-based POS tagger, a syntactic parser, and query processing for biomedical information retrieval. Biological terminology is a major barrier to the accurate processing of literature within biology domain. In order to address this problem, we have constructed the BioLexicon using both manual and semiautomatic methods. We demonstrate the utility of the biology-oriented lexicon within three separate NLP applications. ...

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  • In this chapter we will describe the most popular techniques that molecular biologists use to investigate the structure and function of genes. Most of these start with cloned genes. Many use gel electrophoresis. Many also use labeled tracers, and many rely on nucleic acid hybridization. We have already examined gene cloning techniques. Let us continue by briefl y considering three other mainstays of molecular biology research: molecular separations including gel electrophoresis; labeled tracers; and hybridization.

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  • Chapter 5 - Molecular tools for studying genes and gene activity. This chapter describe the most popular techniques that molecular biologists use to investigate the structure and function of genes. Most of these start with cloned genes. Many use gel electrophoresis. Many also use labeled tracers, and many rely on nucleic acid hybridization. We have already examined gene cloning techniques.

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  • Chapter 16 - Recombinant DNA and biotechnology. In this chapter, students will be able to understand: How are large DNA molecules analyzed? What is recombinant DNA? How are new genes inserted into cells? What are the sources of DNA used in cloning? What other tools are used to manipulate DNA? What Is biotechnology?

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  • Chapter 20 - Development and evolutionary change. This chapter includes contents: How does a molecular tool kit govern development? How can mutations with large effects change only one part of the body? How can differences among species evolve? How does the environment modulate development? How do developmental genes constrain evolution?

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  • MATLAB (Matrix Laboratory) is a matrix-oriented tool for mathematical programming, applied for numerical computation and simulation purposes. Together with its dynamic simulation toolbox Simulink, as a graphical environment for the simulation of dynamic systems, it has become a very powerful tool suitable for a large number of applications in many areas of research and development.

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  • Clearly and elegantly presented, Mathematical Methods in Science and Engineering provides a coherent treatment of mathematical methods, bringing advanced mathematical tools to a multidisciplinary audience. The growing interest in interdisciplinary studies has brought scientists from many disciplines such as physics, mathematics, chemistry, biology, economics, and finance together, which has increased the demand for courses in upper-level mathematical techniques.

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  • Artificial Intelligence (AI) is often referred to as a branch of science which deals with helping machines find solutions to complex problems in a more human-like fashion. It is generally associated with Computer Science, but it has many important links with other fields such as Maths, Psychology, Cognition, Biology and Philosophy. The AI success is due to its technology has diffused into everyday life. Neural networks, fuzzy controls, decision trees and rule-based systems are already in our mobile phones, washing machines and business applications....

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  • Bioinformatics For Dummies is packed with valuable information that introduces you to this exciting new discipline. This easy-to-follow guide leads you step by step through every bioinformatics task that can be done over the Internet. Forget long equations, computer-geek gibberish, and installing bulky programs that slow down your computer. You’ll be amazed at all the things you can accomplish just by logging on and following these trusty directions. You get the tools you need to:

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  • The biological sciences have become more quantitative and information-driven since emerging computational and mathematical tools facilitate collection and analysis of vast amounts of biological data. Complexity analysis of biological systems provides biological knowledge for the organization, management, and mining of biological data by using advanced computational tools. The biological data are inherently complex, nonuniform, and collected at multiple temporal and spatial scales.

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  • We are living in a computer-based world. Computer use in various fields has long ceased to be fashionable and has become almost a necessity. Since the early phases of design to the final implementation of a product, the computer has replaced traditional tools, providing efficient and elegant instruments. We can say, without fear of being wrong, that the strides that mankind has taken in recent decades is due largely to computer assistance.

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  • Inflammatory bowel disease research is changing. Progress in defining and treating these diseases is advancing in lock step with the furious pace of technological advances that continue to refine the tools of discovery. With sequencing of the entire genome completed, genetics research is providing direction for molecular and immunological in vivo and in vitro investigation, which in turn directs the development of targeted therapeutics.

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  • Sound emission studies have been launched in the early 1950s. The technology before the mid-1960s, mainly in electronics engineering and materials, enabling rapid development of the method. Currently technical pronounced applied to a number of research areas, both in civil and industrial use.

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  • Nowadays, Chromatography is the most versatile and widespread technique employed in modern chemical analysis and plays a vital role in the advancement of chemistry, biology, medicine and related fields of research. Because of the inherent simplicity and ease of operation, it can be used together with a wide range of detection systems, including electrochemical, photometric and mass spectrometry, being an invaluable laboratory tool for the separation and identification of compounds.

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  • While most consumers still base their travel decisions largely on price, value for money, service and availability, more and more people are taking environmental factors into account. The railway community is therefore working hard to provide customers with comprehensive information on climate change, air pollution and the ‘external costs’ of transport. New internet-based tools, such as EcoPassenger and EcoTransIT (see Figure 6), are making a range of data available to customers.

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