High pressure

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  • NASA Glenn Safety Manual: Chapter 23 - High pressure hose presents about Scope, Applicability, Authority, Policy, Appendix A – Connector Fittings For High-Pressure-Gas Tube Trailers And Storage Vessels, Appendix B – High Pressure Hose Annual Inspection Form.

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  • High-pressure liquid-solid chromatography (HPLC) is rapidly becoming the method of choice for separations and analysis in many fields. Almost anything that can be dissolved can be separated on some type of HPLC column. However, with this versatility comes the necessity to think about the separation desired and the best way to achieve it. HPLC is not now and probably never will be a turn-key, push-button type of operation.

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  • A Liqui-Mover pump is a positive displacement pressure powered pump with a minimum of moving parts. The pumping action is accomplished using a positive pressure to push the liquid from the pump tank into the return line. The Liqui-Mover pump can handle high temperature and high pressure condensate without difficulty. Liqui-Mover pumps are available in nine sizes. They are available in many configurations, from individual components that are field assembled to complete packaged systems ready for connection to field piping.

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  • Sulfur is the element with the largest number of solid allotropes. Most of these consist of unbranched cyclic molecules with ring sizes ranging from 6 to 20. In addition, polymeric allotropes are known which are believed to consist of chains in a random coil or helical conformation. Furthermore, several high-pressure allotropes have been characterized. In this chapter the preparation, crystal structures, physical properties and analysis of these allotropes are discussed.

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Modified femoral pressuriser generates a longer lasting high pressure during cement pressurisation

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  • 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: Landmine Detection and Discrimination Using High-Pressure Waterjets

    pdf12p sting12 11-03-2012 18 3   Download

  • We show a simple and reliable method of tRNA aminoacylation with natural, as well as non-natural, amino acids at high pressure. Such specific and noncognate tRNAs can be used as valuable substrates for protein engineering. Aminoacylation yield at high pressure depends on the chem-ical nature of the amino acid used and it is up to 10%.

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  • The high-pressure stopped-flow technique is applied to study the CO binding in cytochrome P450cam (P450cam) bound with homologous substrates (1R-camphor, camphane, norcamphor and norbornane) and in the substrate-free protein. The activation volume DV # of the CO on-rate is positive for P450cam bound with substrates that do not contain methyl groups. The kon rate constant for these substrate complexes is in the order of 3 · 106 M)1Æs)1.

    pdf8p system191 01-06-2013 12 2   Download

  •  Lectures "Chapter 8: Expansion valve" content presentation: Thermostatic expansion valve, electronic expansion valve, low pressure float valve, high pressure float valves, capillary tubes and Restrictors,... Invite you to reference.

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  • Average of Socket Wall Thickness around periphery shall be no less than listed values. The minimum values are permitted in localized areas. Upper and lower values for each size are the respective maximum and minimum dimensions.

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Hydraulic conductance of root and shoot measured with the transient and dynamic modes of the high-pressure flowmeter...

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Whole shoot hydraulic resistance in Quercus species measured with a new high-pressure flowmeter...

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  • This chapter presents the following content: Diaphragms, capacitive pressure sensor, fiber – optic pressure sensors, bellows, bourdon tube, manometers, resonant wire devices, electronic pressure gauges, special measurement devices for low pressures, high – pressure measurement, differential pressure-measuring devices, selection of pressure sensors.

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  • ТЬе Textbook Series of the Society of Petroleum Engineers was established in 1972 Ьу action of the SPE Board of Directors. Thе Series is intended to ensure availability of high-quality textbooks for use in undergraduate courses in areas clearly identified as being within the petroleum engineering field. Thе work is directed Ьу the Society's Books Committee, оnе of the more than 40 Society-wide standing committees. Members of the Books Committee provide technical evaluation of the book.

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  • These exercises have been made to fit the content of the book Pressure Control During Oil Well Drilling http://bookboon.com/no, a book that was revised and updated in 2012, mostly on basis of input from my students). Also in present book all the exercises have been solved by students in the relevant course at the Department of Petroleum Engineering and Applied Geophysics at NTNU of Trondheim, Norway. It would be highly appreciated if the readers contacted me at pal.skalle@ntnu.no with comments to this collection of exercises....

    pdf96p sn_buon 29-11-2012 25 3   Download

  • A randomized controlled trial of interventions to enhance patient-physician partnership, patient adherence and high blood pressure control among ethnic minorities and poor persons: study protocol NCT00123045 Lisa A Cooper*1,2,3,4, Debra L Roter5, Lee R Bone5, Susan M Larson5, Edgar R Miller III1,2,3, Michael S Barr6, Kathryn A Carson3 and David M Levine2,5 Address: 1Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins University, Baltimore, Maryland, USA, 2Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA, 3Department o...

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  • The effects of hydrostatic pressure on yeast enolase have been studied in the presence of 1 mMMn2+ . When com-pared with apo-enolase, and Mg-enolase, the Mn-enzyme differs from the others in three ways. Exposure to hydro-static pressure does not inactivate the enzyme. If the experiments are performed in the presence of 1 mMMg2+ , or with apo-enzyme, the enzyme is inactivated [Kornblatt, M.J., Lange R., Balny C. (1998)Eur. J. Biochem251, 775– 780].

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  • Populations in Southeast AsiaandSouthChinahave highfrequencies ofa-thalassemia caused by a-globin gene mutations and/or deletions. This study was designed to find an efficient and simple diagnostic test for the mutations and deletions. A duplex polymerase chain reaction (PCR)/denaturing high-pressure liquid chromatography (DHPLC) was used to detect the mutations and deletions. A blinded study of 110 samples, which included 92 a-thalassemia samples with various genotypes and 18 normal DNA samples, was carried out by the methods.

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  • Ikkai&Ooi [Ikkai,T.&Ooi,T. (1966)Biochemistry5, 1551± 1560] made a thorough study of the e€ect of pressure on G- and F-actins. However, all of the measurements in their study were made after the release of pressure. In the present experiment in situ observations were attempted by using eATP to obtain further detailed kinetic and thermodynamic information about the behaviour of actin under pressure.

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  • Small-angle neutron scattering experiments were performed on horse azidometmyoglobin (MbN3) at pressures up to 300 MPa.Other spectroscopic techniques have shown that a reorganization of the secondary structure and of the active site occur in this pressure range. The present measurements, performedusingvarious concentrations ofMbN3, showthat the compactness of the protein is not altered as the value of its radius of gyration remains constant up to 300 MPa.

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