reciprocating and liquid ring vacuum pumps

liquid ring vacuum pumps, compressors and systems_conventional and hermetic design

Ngày tải lên : 02/04/2014, 15:36

... Pumps and Liquid Ring Compressors 157 Liquid ring vacuum pumps and compressors with radial flow 157 Liquid ring machines with axial flow 159 Liquid ring pump with lateral channel 159 Liquid ring ... processes Vacuum vaporization Vacuum distillation Vacuum sublimation Vacuum drying Vacuum calcination Vacuum annealing and sintering Vacuum melting Vacuum casting Vacuum soldering Vacuum evaporation Vacuum ... flow and vacuum ranges Some kinds of vacuum measuring systems are also called vacuum measuring tubes, vacuum measuring cells or vacuum measuring heads Vacuum gauge; vacuum measuring device A vacuum...

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Know and Understand Centrifuga I Pumps docx

Ngày tải lên : 05/03/2014, 17:20

... fluid (not induced with a pumping ring) between both sets of faces on: w Vertical pumps w Lift pumps and pumps in suction lift conditions w Pumps in vacuum w Pumps operating to the right of their ... displacement pumps Centrifugal pumps Conceptual difference Centrifugal volute pumps Types of centrifugal pumps Overhung impeller Impeller between the bearings Turbine pumps Specific duty pumps The ... differential Pumps are also used to move liquids from a low elevation into a higher elevation, and to move liquids from one place to another Pumps are also used to accelerate liquids through pipes How pumps...

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Báo cáo khoa học: The SWI⁄SNF protein BAF60b is ubiquitinated through a signalling process involving Rac GTPase and the RING ﬁnger protein Unkempt doc

Ngày tải lên : 06/03/2014, 09:22

... Zinc finger and RING finger motifs are in dark and light grey, respectively The C to A mutations of the RING finger in UNK-C-ter double mutant (UNK-C-ter-DM) are indicated bers of Rho and Cdc42 subfamilies, ... the C-terminal RING finger [27] Similarly, in human, the RING finger type paralogs hBRE1A and hBRE1B form a heterotetramer and are both required for H2B ubiquitination, but the hBRE1B RING finger is ... activity of the Ring- Ring complex of polycomb proteins Bmi1 and Ring1 b EMBO J 25, 2465–2474 Poyurovsky MV, Priest C, Kentsis A, Borden KL, Pan ZQ, Pavletich N & Prives C (2007) The Mdm2 RING domain...

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Mechanical Vacuum Pumps docx

Ngày tải lên : 24/03/2014, 05:20

... Pressure: torr 10 100 Andrew D Chew - Mechanical Pumps Vacuum in Accelerators” CERN Accelerator School May 2006 Oil Sealed Rotary Vane Pumps Andrew D Chew - Mechanical Pumps Vacuum in Accelerators” ... gives better ultimate vacuum Andrew D Chew - Mechanical Pumps Vacuum in Accelerators” CERN Accelerator School May 2006 Dual Stage Pump Cutaway Andrew D Chew - Mechanical Pumps Vacuum in Accelerators” ... condense Andrew D Chew - Mechanical Pumps Vacuum in Accelerators” CERN Accelerator School May 2006 Dry Pumps – Clearance mechanisms Ult 0.001 mbar Andrew D Chew - Mechanical Pumps Vacuum in...

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**Mechanical vacuum pumps * doc**

Ngày tải lên : 24/03/2014, 05:20

... Mechanical vacuum pumps developed and used from ~ the mid 20th century to the present day will be discussed after some basic vacuum concepts Basic vacuum concepts The commonly used and basic vacuum ... the range of choices involved between wet (oil-filled) and dry (oil-free) vacuum pumps Table 1: Wet and dry pump comparisons Wet pumps Dry pumps Capital cost Low High Oil loss Can be high at > ... OSRV and piston pumps has several functions: – sealing: the oil surface tension seals the duo-seal and fills the gaps between the vanes, rotors, and stators; – lubrication: of the bearing areas and...

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solvent extraction and liquid membranes

Ngày tải lên : 02/04/2014, 16:36

... Solvent Extraction and Liquid Membranes 1.1 Liquid Liquid Extraction Liquid liquid extraction is now very well established, featuring extensively as a selective separation process Liquid membranes ... on liquid liquid and liquid membranes are common in chemical and mineral processing engineering curricula Because of the breadth of the subject, the treatment in such courses is often scarce, and ... senior and young scientists and engineers with the main idea of discussing the fundamentals and practice of solvent extraction (SX) and liquid membranes (LM) and to grow the new ideas and trends...

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Báo cáo khoa học: "Climatic signals in earlywood, latewood and total ring width of Corsican pine from western France" ppsx

Ngày tải lên : 08/08/2014, 14:21

... of the mean values and standard deviation of partial regression and correlation coefficients (MRC and SC for calibration, MRV and SV for verification) between actual values and values reconstructed ... Growth and decline symptoms of Silver Fir and Norway Spruce in Northeastern France: Relation to climate, nutrition and silviculture, in: Landmann G and Bonneau M (Eds.), Forest decline and atmospheric ... covering the last 300 years in central Spain, in: Dean J.S., Meko D.M., and Swetnam T.W (Eds.), Tree Rings, Environment and Humanity, Radiocarbon (1996) 181-190 [10] Fritts H.C., Tree -ring and...

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Applications of oligopeptides and liquid crystals for chemical sensing

Ngày tải lên : 10/09/2015, 09:05

... e.g Mr Boey Kok Hong and Ms Lee Chai Keng, for their invaluable assistance Finally, I would like to thank my parents and my wife They always support me and encourage me during the past five years ... Enhancement 37 2.4 Liquid Crystal (LC) 40 2.5 Liquid Crystals for Detecting Proteins 43 2.6 Liquid Crystals for Detecting Small Molecules 47 CHAPTER LIQUID CRYSTAL BASED ... Detecting small molecules and biomarkers is important in environmental monitoring, food safety, and medical diagnosis Traditionally, chromatography methods (such as HPLC or GC) and enzyme-linked immunosorbent...

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Study on ignition and combustion of gas jet and liquid spray fuels

Ngày tải lên : 06/06/2016, 17:55

... Shafiee and Topal [1] have computed and derived depletion times for fossil fuels reserves, and report that crude oil, coal and natural gas are likely going to be depleted in 35, 107 and 37 years, ... ignition delay and combustion characteristics for various gasjet and liquid- spray fuels under simulated diesel combustion conditions, in terms of:  Jets and sprays penetration and dispersion ... flat folding mirrors and re-focused into a pinpoint and entering high-speed CMOS camera (Phantom v7.1 or Fastcam SA1) The capture rate and shutter speed of the camera are varied and optimized depending...

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Measurement of Color, Gloss, and Translucency of White Salted Noodles- Effects of Water Addition and Vacuum Mixing.pdf

Ngày tải lên : 16/12/2012, 15:25

... stage included conventional mixing (no vacuum) with water additions of 35 and 38% and vacuum mixing with 38% water addition and vacuum levels of –55 kPa and –90 kPa The experiment was repeated ... calculate the gloss and translucency score Panelists ranked noodle gloss and translucency on boiled noodle disks and strands from six WSN mixes of ASWN and gelatin, following standard procedures ... units (standard deviation 1.80) and 20.40 units (standard deviation 1.58) (60°); from the hard wheat sample, the mean level was 18.82 units (standard deviation 1.80) and 18.16 units (standard deviation...

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Evaluation of heat pumps usage and energy savings in residential buildings

Ngày tải lên : 05/09/2013, 16:10

... 140 and 205 m2) and large size (more than 205 m2) As shown in Figure 2, the percentages of the house sizes in the test group are 54%, 40%, and % for large, medium and small homes respectively and ... 33%, 62%, and 5% for large, medium and small homes respectively The percentages of 1-4 years old, 5-8 years old and 9-12 years old homes in the control group sample are 40% , 46 % and 14 % respectively ... homes that have utilized and relied on heat pumps as their main heating source (test group) and homes that have relied on other heating alternatives such as gas, electricity and a combination of...

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REVIEW AND APPLICATION OF THE TULSA LIQUID JET PUMP MODEL

Ngày tải lên : 23/10/2013, 08:42

... different Jet Pump models and comparison between Jet Pump and other artificial Jet Pump models In chapter 3, and the Tulsa Jet Pump model is introduced and documented, and in chapter the model ... great advantages of the jet pumps are that water can be used as power fluid and that the power source can be remotely located and can handle high volume rates Hydraulic Jet Pumps are adaptable to ... values of N and M that together result in the highest efficiency and lowest power demand for the power fluid As seen on Figure 11 and 12, increasing nozzle/throat area ratio Review and Application...

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Tài liệu PUMPS AND FANS pptx

Ngày tải lên : 27/01/2014, 16:20

... requiring high heads and low flow rates, or for use with very viscous fluids The common types are reciprocating (piston and cylinder) and rotary (gears, lobes, vanes, screws) Centrifugal pumps ... using double-acting reciprocating pumps that discharge fluid at both ends of the stroke Rotary pumps have smooth flows 55.4.3 Characteristics of Centrifugal Pumps Centrifugal pumps are used in ... application and is desirable for pump and fan selection and system analysis for constant flow applications The curve to be plotted is H versus Q, where H=[ET(3}-ET(2}]/g (55.3) Assume that V1 = O and...

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Tài liệu Báo cáo khoa học: The resident endoplasmic reticulum protein, BAP31, associates with c-actin and myosin B heavy chain Analysis by capillary liquid chromatography microelectrospray tandem MS ppt

Ngày tải lên : 20/02/2014, 23:20

... both the BAP31–Flag and the endogenous BAP31 proteins, migrating at apparent masses of 33 kDa and 28 kDa, respectively, and two additional protein bands at apparent masses of 42 and 190 kDa [9] For ... procaspases and 3, by the measurement of total DEVDase activity, and by the cleavage of the caspase targets poly(ADP-ribosyl) polymerase and endogenous BAP31 In contrast, cytoplasmic membrane blebbing and ... c-actin and myosin B (Eur J Biochem 270) 347 Fig Tandem MS of the heterogeneous N-terminal peptides of c actin (A) Tandem MS of the acetylated N-terminal peptide with Ile at position (B) Tandem...

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Tài liệu Báo cáo Y học: The effects of ring-size analogs of the antimicrobial peptide gramicidin S on phospholipid bilayer model membranes and on the growth of Acholeplasma laidlawii B ppt

Ngày tải lên : 21/02/2014, 01:21

... and sound velocimetry that GS binding to PtdCho bilayers decreases the temperature and cooperativity of their gel/liquidcrystalline phase transition and increases the volume compressibility and ... excitation and emission of nm and quartz cells of 1-cm path length; the excitation and emission were recorded at wavelengths of 496 and 516 nm, respectively The A laidlawii B cells were grown and cell ... somewhat polar and positively charged Orn sidechains and the two D-Phe rings projecting from one side of this molecule, and the four hydrophobic Leu and Val sidechains projecting from the other side...

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LIQUID, GASEOUS AND SOLID BIOFUELS - CONVERSION TECHNIQUES ppt

Ngày tải lên : 07/03/2014, 11:20

... Bio-Oils and Bio-Chemicals 327 Iñaki Gandarias and Pedro Luis Arias Chapter 11 Synthesis of Biomass-Derived Gasoline Fuel Oxygenates by Microwave Irradiation 357 Armando T Quitain, Shunsaku Katoh and ... of liquid fuels (e.g., ethanol, butanol and 2,3-butanediol) and other products (e.g., acetic acid and butyric acid) Chapters and overview the production and applications of biobutanol Chapter ... describes production methods for gases and other products Chap‐ ters 12 and 13 introduce hydrogen production by anaerobic fermentation, and DC and im‐ pulse plasma -liquid systems, respectively Chapter...

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Báo cáo Y học: Inhibition of the SERCA Ca21 pumps by curcumin Curcumin putatively stabilizes the interaction between the nucleotide-binding and phosphorylation domains in the absence of ATP pot

Ngày tải lên : 08/03/2014, 23:20

... activities (X) and Ca2þ uptake (B) in a variety of microsomes are presented: (A) and (B), skeletal muscle SR; (C) and (D), cardiac SR; (E) and (F), platelet microsomes; and (G) and (H), cerebellar ... acid, 0.25% (w/v) copper sulfate, and 0.2 M sodium acetate Twohundred and ﬁfty microliters of 5% (w/v) ammonium molybdate was then added and mixed thoroughly and 0.25 mL of ELAN solution was added ... ﬂuorescence level and the addition of 1.25 mM EGTA and 1.5 mM CaCl2 (Fluo-3) or mM CaCl2 (Magnesium green) determines Fmin and Fmax, respectively The Kd values used for Fluo-3 and Magnesium green...

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Liquid-Delivery Metal-Organic Chemical Vapour Deposition of Perovskites and Perovskite-Like Compounds pdf

Ngày tải lên : 14/03/2014, 19:20

... scientific discussions and support Last but not the least; I express huge thanks to my family: my husband, my mother and my sister for their support, encouragement and trust in me during all these study ... layer-then-island (Stranski-Krastanov) growth, an intermediate growth mode, where a layer grows below a critical thickness and subsequently 3D island growth occurs, and c) the island (Volmer-Weber) ... thermal stability problems during transportation, are available In LD-MOCVD these problems are solved by dissolving precursors in a liquid solvent and transporting them as a liquid to a flash evaporator...

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Báo cáo khoa học: Trafﬁcking and proteolytic processing of RNF13, a model PA-TM-RING family endosomal membrane ubiquitin ligase pot

Ngày tải lên : 15/03/2014, 00:20

... (PA) domain, a hydrophobic transmembrane sequence (TM), and a RING, PEST and Ser-rich domain The membrane-bound C-terminal fragment(s) (CTF) and the soluble intracellular C-terminal domain (ICD) ... of vesicles (Fig 1) Two PA-TM -RING family members, RNF128 ⁄ gene related to anergy in lymphocytes (GRAIL) [8,9] and receptor homology region-transmembrane domainRingH2 motif protein (RMR) [10,11] ... for 10 h with vehicle (dimethylsulfoxide) (lanes and 4) or with a proteasome inhibitor, either lM MG132 (lanes and 5) or 0.5 lM epoxomicin (lanes and 6) Cellular proteins were resolved on a 12%...

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Báo cáo Y học: RING ﬁnger, B-box, and coiled-coil (RBCC) protein expression in branchial epithelial cells of Japanese eel, Anguilla japonica pot

Ngày tải lên : 17/03/2014, 10:20

... imaging plate for h and the result was analyzed with a BAS-2000 image analyzer (Fuji Film) Differentially expressed bands of interest were extracted from the gel and reampliﬁed and then cloned into ... was 32P-labeled by random priming and hybridized to the RNA ﬁlters in 50% formamide, · SSPE (SSPE ¼ 0.15 mM NaCl, mM EDTA, and 10 mM NaH2PO4, pH 7.4), · Denhardt’s solution, and 0.5% SDS for 16 ... polyacrylamide, M urea denaturing gels and exposed to an imaging plate for 16 h and the result was analyzed with a BAS-2000 image analyzer (Fuji Film) Screening and sequencing The freshwater-adapted...

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