Xem 1-18 trên 18 kết quả Molecular devices
  • 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: Nanoelectrodes for Molecular Devices: A Controllable Fabrication

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  • The new millennium has seen the birth of a new perspective that conflates research in solid-state physics, biological science as well as materials engineering. The perspective is one that recognizes that future new advances in all these areas will be based on a fundamental understanding of the atomic and molecular infrastructure of materials that has resulted from two centuries of chemistry. Major advances will be achieved when the novel behavior, in particular the quantum mechanical behavior, that nanoscale structures possess, can be controlled and harnessed....

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  • The Third InternationalWorkshop of the Croucher Advanced Study Institute (ASI) on Nano Science and Technology: from Basic Science to Device Applications, was held at Hong Kong University of Science and Technology from 8 January to 12 January 2007. The first and second workshops took place in January 1999, and January 2002, respectively. Collected in this volume are 20 articles, 16 from invited talks and four from contributed presentations. The speakers are from the United States, Europe, Japan, Korea, Chinese Mainland, Taiwan, and Hong Kong.

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  • This new edition, the fifth under the aegis of the present editor, remains the one-volume source of factual information for chemists, both professionals and students—the first place in which to “look it up” on the spot. The aim is to provide sufficient data to satisfy all one’s general needs without recourse to other reference sources. A user will find this volume of value as a time-saverbecause of the many tables of numerical data which have been especially compiled.

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  • After the ground breaking discovery of electrical charge carrier transport in polymers in the late 1980s by Alan J. Heeger, Alan G. MacDiarmid and Hideki Shirakawa [1–3], who were awarded the Nobel Prize in chemistry in 2000, the question arose as to whether organic materials would also find applications as organic semiconductors. This field really started to attract major attention after the demonstration of the first organic light emitting device (OLED) in 1987 by Tang and Van Slyke [4].

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  • Dominique Russell argues that film music currently exists within a changing “soundscape,” whereby “there has been a change in our sound envi- ronment through the proliferation of ‘private sound bubbles, ’ created through compact music players. Headphone technology creates private soundtracks to common images.... Insulated from room tone and ambient noises, two head- phone wearers become spectators to two very different scenes, depending on what they are listening to.

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  • Nanoelectronics is a rapidly expanding field with researchers exploring a very large number of innovative techniques for constructing devices intended to implement high-speed logic or high-density memory. Less common, however, is work intended to examine how to utilize such devices in the construction of a complete computer system. As devices become smaller, it becomes possible to construct ever more complex systems but to do so means that new and challenging problems must be addressed.

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  • In the quest for knowledge, it is not uncommon for researchers to push the limits of simulation techniques to the point where they have to be adapted or totally new techniques or approaches become necessary. True multiscale modeling techniques are becoming increasingly necessary given the growing interest in materials and processes on which large-scale properties are dependent or that can be tuned by their low-scale properties. An example would be nanocomposites, where embedded nanostructures completely change the matrix properties due to effects occurring at the atomic level.

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  • In clinical practice, doctors personally assess patients in order to diagnose, treat, and prevent disease using clinical judgment. The doctor-patient relationship typically begins an interaction with an examination of the patient's medical history and medical record, followed a medical interview[4] and a physical examination. Basic diagnostic medical devices (e.g. stethoscope, tongue depressor) are typically used. After examination for signs and interviewing for symptoms, the doctor may order medical tests (e.g.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care cung cấp cho các bạn kiến thức về ngành y đề tài: Effect of the molecular adsorbent recirculating system and Prometheus devices on systemic haemodynamics and vasoactive agents in patients with acute-on-chronic alcoholic liver failure...

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  • Electrically conductive, ductile, thermally and mechanically stable composite films of polyaniline and sulfonated poly (arylene ether sulfone) were introduced. A simple chemical route was followed to prepare composite films. The electrical conductivity of the films was controlled by changing the weight percent of conductive filler. Temperature dependent DC conductivity studies showed that the Mott three dimensional hopping mechanism can be used to explain the conduction mechanism in composite films.

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  • A large variety of nano- and microscale structures and devices, as well as NEMS and MEMS (systems integrate structures, devices, and subsystems), have been widely used, and a worldwide market for NEMS and MEMS and their applications will be drastically increased in the near future. The differences in NEMS and MEMS are emphasized, and NEMS are smaller than MEMS. For example, carbon nanotubes (nanostructure) can be used as the molecular wires and sensors in MEMS. Different specifications are imposed on NEMS and MEMS depending upon their applications.

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  • Nanotechnology in Biology and Medicine is intended to serve as an authoritative reference for a wide audience involved in research, teaching, learning, and practice of nanotechnology in life sciences. Nanotechnology, which involves research on and the development of materials and species at length scales between 1 to 100 nm, has been revolutionizing many important scientific fields ranging from biology to medicine. This technology, which is at the scale of the building blocks of the cell, has the potential of developing devices smaller and more efficient than anything currently available.

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  • There have been several significant advances innuclearmedicine since the publication of the second edition of Practical NuclearMedicine. The last seven years have seen great strides in instrumentation, including new coincidence detectors, the development of a wider variety of crystals, and the advent of combined anatomical/functional imaging devices, including PET/CT and SPECT/CT. PET imaging with 18F-FDG has become a mainstay of many clinical settings, and other radiotracers are finding theirway into the rapidly expanding field of oncologic PET.

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  • At the beginning of the 21st century, medicine is increasingly based on understanding the functions of genes and the molecular mechanisms of diseases. In pancreatology, the understanding of functions and dysfunctions of the exocrine and endocrine pancreas is derived from molecular biological data on the actions of compounds in subcellular compartments and intracellular transcription pathways.

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  • Novel system performance through nanostructuring has been recognized in many branches of science in the latter half of the 20th century. In computer science, the computational efficiency has improved by nearly four orders of magnitude in 30 years, using energy consumed per operation as a metric. To achieve further advances will require the reduction in size of electronic devices to the scale of molecules; that is, a totally different type of computational machinery is required: molecular electronics.

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  • Biodegradable Systems 177 Figure 3 Cumulative release GCV from the scleral plugs of PLA-70,000 and PLA-5000 (whose content ratio was 80:20) containing 25% of GCV. The values shown are mean Æ SD. The duration of GCV release was prolonged further compared with the plug made of PLGA (75/25)-121,000. Abbreviations: GCV, ganciclovir; PLA, polylactic acid; PLGA, polyglycolic acid. Source: From Ref. 4. weight: 5000) at weight ratios of 80/20. These plugs included 25% GCV.

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  • Since the first production of tools at the beginning of human presence on Earth, human evolution is linked to the invention of new tools, usually combined with new environmental adaptations. The symbiosis of man with tools and environments represents one of the main factors in human evolutionary processes. It is evident how this coupling is based on the biophysics of our bodies and the development of the social memory system called culture.

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