Cellular environment

Xem 1-20 trên 39 kết quả Cellular environment
  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: The interaction between the measles virus nucleoprotein and the Interferon Regulator Factor 3 relies on a specific cellular environment

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  • By 2020, a better molecular definition of “health” and “ill-health” will have been achieved and early markers that identify the transition between the two states will have been identified. This will be delivered by studying cellular and molecular mechanisms of both states and by studying the interplay between environmental factors to which the population is exposed and their genetic make-up.

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  • The merging of voice and data on a single network opens powerful new possibilities in communications. Only a fundamental understanding of both technologies will ensure you are equipped to maximise their full potential. Convergence Technologies for 3G Networks describes the evolution from cellular to a converged network that integrates traditional telecommunications and the technology of the Internet.

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  • As stated in Chapter 1, Section 1.2, requirements for International Mobile Telecommunications-2000 (IMT-2000) include system flexibility, economy and conditions on data transmission speed defined in numerical terms. The minimum performance requirement in terms of transmission speed is 2 Mbit/s in an indoor environment, 384 kbit/s in a pedestrian mode and 144 kbit/s in a vehicle mode.

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  • The Introduction of International Mobile Telecommunications-2000 (IMT-2000) has enabled high-speed data transmission, laying the groundwork for full-scale multimedia communications in mobile environments. Taking into account the characteristics and limitations of radio access, multimedia processing suitable for mobile communication is required. In this chapter, signal processing, which is a basic technology for implementing multimedia communication, is first discussed.

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  • The Digivance Indoor Coverage Solution (ICS) is used to extend coverage to specific areas within a building, multiple buildings, or throughout a campus environment. This digital distributed antenna system (D-DAS) solution features unique, patented technology that distributes wireless coverage digitally over optical fiber, making Digivance ICS the best choice for signal quality, flexibility, and overall performance. Its digitized optical RF transport also future-proofs in-building wireless infrastructure for higher data rate services.

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  • Salinity stress negatively impacts agricultural yield throughout the world affecting production whether it is for subsistence or economic gain. The plant response to salinity consists of numerous processes that must function in coordination to alleviate both cellular hyperosmolarity and ion disequilibrium. In addition, crop plants must be capable of satisfactory biomass production in a saline environment (yield stability).

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  • This book provides an example of the successful and rapid expansion of bioengineering within the world of the science. It includes a core of studies on bioengineering technology applications so important that their progress is expected to improve both human health and ecosystem. These studies provide an important update on technology and achievements in molecular and cellular engineering as well as in the relatively new field of environmental bioengineering.

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  • Cell membranes act as barriers to most, but not all, molecules. The development of a cell membrane that could allow some materials to pass while constraining the movement of other molecules was a major step in the evolution of the cell. Cell membranes are differentially (or semi-) permeable barriers separating the inner cellular environment from the outer cellular (or external) environment.

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  • This book provides an example of the successful and rapid expansion of bioengineering within the world of the science. It includes a core of studies on bioengineering technology applications so important that their progress is expected to improve both human health and ecosystem. These studies provide an important update on technology and achievements in molecular and cellular engineering as well as in the relatively new field of environmental bioengineering.

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  • US Regulatory Status in the 1990s During the first part of the 1990s, the regulatory climate in the US cellular environment was fashioned by the components of the time. The migration from analogue to digital was underway. The TDMA/FDMA debate had finished and a decision had been made (with TDMA winning) and the TDMA/CDMA public relations wars were in full swing. CDMA was thought by some to be the saviour of the world, capacity wise, and others were firmly committed to TDMA and some even to enhancements of TDMA. A new US President took office in 1993 and one of...

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  • The production of free radicals (ROS) is an unavoidable consequence of life in an aerobic environment. Free radicals produced from the metabolic activities of oxygen attack biological membranes and lipoproteins via oxidation in a process called lipid perioxidation. This attack damages cells and lipids often in a chain reaction with carbon-based molecules such as polyunsaturated fatty acids (PUFA) in a reaction with molecular oxygen. This creates oxidative stress and damage to tissues. Free radicals also damage chromosomal DNA.

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  • The extracellular matrix (ECM) represents a complex organization of macromolecules that surrounds the cell and comprises the substratum onto which the cell may be attached. The properties and functions of the ECM depend ultimately on its structure, molecular components, architecture, and dynamic modulation. Because the critical role of ECM involved in cell biology and physiology has long been recognized, the structure and biology of the ECM have been extensively studied (Yurchenco and Birk 1994 ; Ayad et al. 1998 ; Robert 2001 ) .

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  • Technology is the making, modification, usage, and knowledge of tools, machines, techniques, crafts, systems, methods of organization, in order to solve a problem, improve a preexisting solution to a problem, achieve a goal, handle an applied input/output relation or perform a specific function. It can also refer to the collection of such tools, machinery, modifications, arrangements and procedures. Technologies significantly affect human as well as other animal species' ability to control and adapt to their natural environments.

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  • Implementation Issues A general block diagram of a multi-carrier transceiver employed in a cellular environment with a central base station (BS) and several terminal stations (TSs) in a point to multi-point topology is depicted in Figure 4-1. For the downlink, transmission occurs in the base station and reception in the terminal station and for the uplink, transmission occurs in the terminal station and reception in the base station.

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  • Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học được đăng trên tạp chí toán học quốc tế đề tài: Resource reservation for mobile hotspots in vehicular environments with cellular/WLAN interworking

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  • Philosophical debates have arisen over the present and future use of technology in society, with disagreements over whether technology improves the human condition or worsens it. Neo-Luddism, anarcho-primitivism, and similar movements criticise the pervasiveness of technology in the modern world, opining that it harms the environment and alienates people; proponents of ideologies such as transhumanism and techno-progressivism view continued technological progress as beneficial to society and the human condition.

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  • Tenure legislation also is often blind or hostile to the traditional claims of indigenous communities and disregards their natural resource management systems and rights. Policies fostering the colonisation of indigenous areas – sometimes to divert pressure for land reform effectively encourage colonists to treat land occupied by indigenous communities as “open-access”. 7 State policies have also had a significant impact on the property regimes governing large- scale grazing lands, and consequently on pastoralists’ livelihoods.

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  • On September 7th , Italy signed a bilateral agreement to promote projects in China ahead of the World Expo Shanghai 2010. The agreement is the latest of seven bilateral environmental accords signed by Italy so far this year, and it continues a three-year history of environmental cooperation between Italy and China. The agreement was signed by Corrado Clini, director general of Italy's Environment Ministry, and Xu Zuxin, the head of the Shanghai Environmental Protection Agency.

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  • Society can contribute to the establishment and growth of car-sharing by supporting it in various ways. This in turn can benefit society by reducing the negative effects of car traffic on the environment and by improving urban environments generally. The support provided should not be of economic character, since most car-sharing organizations today are on firm economic footing, having achieved this on their own.

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