Xem 1-14 trên 14 kết quả Protocol characterization
  • The number of different applications for RFID systems is increasing each year and various research directions have been developed to improve the performance of these systems. With this book InTech continues a series of publications dedicated to the latest research results in the RFID field, supporting the further development of RFID. One of the best ways of documenting within the domain of RFID technology is to analyze and learn from those who have trodden the RFID path.

    pdf286p kimngan_1 05-11-2012 35 9   Download

  • Few fi elds of medicine have witnessed such impressive progress as the diagnosis and treatment of liver tumors. Advances in imaging technology, the development of novel contrast agents, and the introduction of optimized scanning protocols have greatly facilitated the non-invasive detection and characterization of focal liver lesions. Furthermore, image-guided techniques for percutaneous tumor ablation have become an accepted alternative treatment for patients with inoperable liver cancer.

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  • The first, most conventional way to characterize the global health picture is a description of health and disease. Today, the overall picture for child health and maternal health in poor countries is worrisome indeed. While child mortality has steadily declined in the last two decades, still approximately 10.8 million children under the age of five die each year. Progress on key indicators is slowing, and in parts of Sub-Saharan Africa, child mortality is on the rise. The great bulk of the mortality decline since the 1970s is attributable to reduction in deaths...

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  • As the Internet grows and routing complexity increases, network-level instabilities are becoming more and more common. End-to-end communications are especially susceptible to service disruptions, while diagnosing and mitigating these disruptions are extremely challenging. In this dissertation, we design and build systems for diagnosing routing anomalies and improving robustness of end-to-end communications. The rst piece of this work describes PlanetSeer, a novel distributed system for diagnosing routing anomalies.

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  • Since the outbreak of peer-to-peer (P2P) networking with Napster during the late ’90s, P2P applications have multiplied, become sophisticated and emerged as a significant fraction of Internet traffic. At first, P2P traffic was easily recognizable since P2P protocols used specific application TCP or UDP port numbers. However, current P2P applications have the ability to use arbitrary ports to “camouflage” their existence. Thus only a portion of P2P traffic is clearly identifiable. As a result, estimates and statistics regarding P2P traffic are unreliable.

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  • Recombinant human kynureninase (L-kynurenine hydrolase, EC was purified to homogeneity (60-fold) from Spodoptera frugiperda (Sf9) cells infected with baculovirus containing the kynureninase gene. The purification protocol comprised ammonium sulfate precipitation and several chromatographic steps, including DEAE–Sepharose CL-6B, hydroxyapatite, strong anionic and cationic separations. The purity of the enzyme was determined by SDS/ PAGE, and the molecular mass verified by MALDI-TOF MS. The monomeric molecular mass of 52.4 kDa determined was 99.

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  • Phosphoglyceratemutase (PGAM) activity inpromastigotes of theprotozoanparasiteLeishmaniamexicanais foundonly in the cytosol. It corresponds to a cofactor-independent PGAM as it is not stimulated by 2,3-bisphosphoglycerate and is susceptible to EDTA and resistant to vanadate. We have cloned and sequenced the gene and developed a convenient bacterial expression system and a high-yield purification protocol. Kinetic properties of the bacterially produced protein have been determined (3-phosphoglycer-ate:Km¼0.27 ± 0.02 mM, kcat ¼434 ± 54 s )1 ; 2-phos-phoglycerate:Km¼0.11 ± 0.

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  • The guidance assumes the presence of a trained health worker to administer the uterotonic, the medicine is used after childbirth for postpartum hemorrhage, and that 600 micrograms of misoprostol is administered. In low-resource settings, these conditions are not often met, which poses a disadvantage to the selection and use of misoprostol.

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  • Difficulty in accessing ground water without disturbing ground-water flow patterns, chemistry, microbiology, and the physical and chemical makeup of formation materials has made accurate characterization of in situ ground-water conditions a very challenging task.

    pdf308p 951628473 07-05-2012 58 29   Download

  • Radio frequency identification (RFID) is a fascinating, fast developing and multidisciplinary domain with emerging technologies and applications. It is characterized by a variety of research topics, analytical methods, models, protocols, design principles and processing software. With a relatively large range of applications, RFID enjoys extensive investor confidence and is poised for growth.

    pdf354p 123859674 30-06-2012 89 27   Download

  • Multicasting can efficiently support a variety of applications that are characterized by the close degree of collaboration typical of many ad hoc applications currently envisioned. Within the wired network, well-established routing protocols exist to offer efficient multicasting service. As nodes become increasingly mobile, these protocols need to evolve to provide similarly efficient service in the new environment.

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  • Socket are characterized by their domain, type and transport protocol. Common domains are: I AF UNIX: address format is UNIX pathname I AF INET: address format is host and port number Common types are: virtual circuit: received in order transmitted and reliably datagram: arbitrary order, unreliable

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  • Phenotypic characterization activities are technically and logistically challenging. Ensur- ing that they are well targeted (collect data that are important to the country’s priority AnGR- and livestock-development activities) and are carried out in an efficient and cost- effective manner requires thorough planning and careful implementation. Valid compari- sons among livestock breeds or populations, whether nationally or internationally, require the development and use of standard practices and formats for describing their character- istics.

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  • In this cross-sectional study data was obtained from reviewing the files of 1,594 patients who underwent bronchoscopy in Afzalipour Hospital during 2003-2007. These patients had various conditions ranging from chronic cough to abnormal findings on chest xray and hemoptysis and all underwent bronchoscopy due to the doctors’ orders. All cases consented to this study. Their bronchoscopy was done by experts who were skillful at diagnosing bronchial anthracosis. Bronchial anthracosis was characterized by dark pigmentations within airway mucosa found during bronchoscopy.

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