Xem 1-20 trên 36 kết quả Emission computed
  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: A role of 18F-fluorodeoxyglucose positron emission/computed tomography in a strategy for abdominal wall metastasis of colorectal mucinous adenocarcinoma developed after laparoscopic surgery

    pdf5p hoami_238 11-10-2011 21 2   Download

  • Consider the spontaneous emission term describing the contribution of the spontaneous emission to the laser oscillation, which appears as the final term on the right-hand side of the rate equation for the photon density (Eq. (6.21)). Since this term represents the component of the spontaneous emission belonging to the same mode as the laser oscillation (angular frequency !m), it is closely related to the gain for the oscillation mode. Consider a laser of index-guiding type, and let E ¼ E(r) ¼ E(x, y)E(z) be the complex electric field of the oscillation mode. ...

    pdf3p vuongpm 16-05-2010 58 8   Download

  • This book provides a review of image analysis techniques as they are applied in the field of diagnostic and therapeutic nuclear medicine. Driven in part by the remarkable sophistication of nuclear medicine instrumentation and increase in computing power and its ready and inexpensive availability, this is a relatively new yet rapidly expanding field. Likewise, although the use of nuclear imaging for diagnosis and therapy has origins dating back almost to the pioneering work of Dr G.

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  • Why to deal with lasers? Lasers are used for medical applications Lasers may be the key part for future power plants (fusion reactors) tubes contain the laser beams 1 ns pulse duration, 45 kJ/pulse, 100 TW peak power Lawrence-Livermore Laboratory, USA, National Ingnition Facilty, NOVA laser system Lasers are a key part of todays consumer electronics, telecommunication, and computer technology Digital Video Disk (DVD)

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  • Engine management systems are designed to ensure that the vehicle complies with emissions regulations as well as to provide improved performance. This means that the number of sensors and actuators is considerably greater than for a simple fuelling or ignition system.

    pdf20p lyacau 30-12-2009 79 28   Download

  • Automation is the use of control systems (such as numerical control, programmable logic control, and other industrial control systems), in concert with other applications of information technology (such as computer-aided technologies [CAD, CAM, CAx]), to control industrial machinery and processes, reducing the need for human intervention. In the scope of industrialization, automation is a step beyond mechanization.

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  • Information security does not guarantee the safety of your organization or your information or your computer systems. Information security cannot, in and of itself, provide protection for your information. That being said, information security is also not a black art. There is no sorcery to implementing proper information security and the concepts that are included in information security are not rocket science. In many ways, information security is a mindset. It is a mindset of examining the threats and vulnerabilities of your organization and managing them appropriately. 

    pdf413p ptng13 16-05-2012 64 16   Download

  • SPECT viết tắt của cụm từ Single Photon Emission Computed Tomography; Là một thiết bị ứng dụng kỹ thuật y học hạt nhân để chẩn đoán hình ảnh chức năng của các cơ quan trong cơ thể. Hình ảnh mà SPECT thu được không phải là hình thể giải phẫu mà là hình ảnh phản ánh chức năng của cơ quan.

    pdf6p mangcaudam 07-06-2011 34 9   Download

  • Clients in the system specify an interest in the type of events that they are interested in. Some examples of interests specified by clients could be sports events or events sent to a certain discussion group. It is the system, which computes the clients that should receive a certain event. A particular event may thus be consumed by zero or more clients registered with the system. Events have explicit or implicit information pertaining to the clients which are interested in the event.

    pdf44p nhacchovina 22-03-2013 27 8   Download

  • The extraordinary mechanical properties and unique electrical properties of carbon nanotubes (CNTs) have stimulated extensive research activities across the world since their discovery by Sumio Iijima of the NEC Corporation in the early 1990s. Although early research focused on growth and characterization, these interesting properties have led to an increase in the number of investigations focused on application development in the past 5 years.

    pdf276p echbuon 02-11-2012 19 7   Download

  • How can you tell if a technology has reached critical mass? Easy: you look at how much damage it’s causing. Pretty much every human invention is neutral in itself; any benefits (or drawbacks) come from the way it’s used: atomic energy can be used to power a city or destroy it; cars make it travel over distances that were unthinkable just a hundred years ago possible, and are happily destroying our planet with their polluting emissions.

    pdf73p thutrang 17-08-2009 100 6   Download

  • 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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  • nformation Technology is responsible for approximately 2% of the world’s emission of greenhouse gases. The IT sector itself contributes to these greenhouse gas emissions, through its massive consumption of energy - and therefore continuously exacerbates the problem. At the same time, however, the IT industry can provide the

    pdf283p mymi0809 19-01-2013 18 5   Download

  • The KRONE F/FTP 450/23 cable is designed for applications up to 450 MHz and provides transmission performance meeting Category 6 specifications. This cables are low skew products, i.e. the difference in propagation delay between the individual pairs is very low. This is increasingly being requested for Gigabit Ethernet. The suitability of the cable for high-bit-rate transmission systems ensures a high degree of future proofing. Additional features are the slim design and low weight of the cables. Each pair is individually shielded (FTP).

    pdf2p thanhha 26-08-2009 32 4   Download

  • Many of these failures can be caused by manufacturing defects and / or design procedure is inconsistent with a particular emphasis on areas disrupted the vessels. Sound emission data were collected on the actual ship and trends in the data were analyzed, resulting in a load standard and appraisal procedures (CARP, 1982). The concept was later developed into the ASME boiler and pressure vessel Code and is used today (ASME 2010a and 2010b). AE is still the preferred method assessment of a ship before, and also to evaluate the train services....

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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:CyberKnife radiosurgery for inoperable stage IA non-small cell lung cancer: 18F-fluorodeoxyglucose positron emission tomography/computed tomography serial tumor response assessment

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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: F-18 fluorodeoxyglucose positron emission tomography and/or computed tomography findings of an unusual breast lymphoma case and concurrent cervical cancer: a case report...

    pdf5p thulanh26 09-12-2011 23 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: F-18-fluorodeoxyglucose positron emission tomography-computed tomography for the diagnosis of Takayasu's arteritis in stroke: a case report

    pdf5p dauphong1 21-12-2011 16 3   Download

  • Noninvasive cardiac imaging is an integral part of the practice of current clinical cardiology. During the past three decades a number of distinctly different noninvasive imaging techniques of the heart, such as radionuclide imaging, echocardiography, magnetic resonance imaging, and X-ray computed tomography have been developed. Remarkable progress has been made by each of these technologies in terms of technical advances, clinical procedures, and clinical applications/indications.

    pdf340p waduroi 03-11-2012 22 3   Download

  • Climate change is a serious environmental challenge and our Government has an aggressive strategy to tackle it. We will set mandatory reduction targets for all major industries that produce greenhouse gases, like carbon dioxide, that cause climate change. Our strategy is real, it begins immediately and it will lead to concrete results with challenging, but realistic emissions targets for industry. These targets will be tough and they will be tightened each and every year.

    pdf15p doipassword 01-02-2013 17 3   Download

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