evaporation and vapor pressure
distillation and vapor pressure measurement in petroleum products
Ngày tải lên :
01/04/2014, 11:24
... ͓7͔, ASTM E1719 “Standard Test Method for Vapor Pressure of Liquids by Ebulliometry” ͓8͔, and ASTM D2879 “Standard Test Method for Vapor Pressure- Temperature Relationship and Initial Decomposition ... ͑Vacuum Potstill Method͒” ͓5͔ Vapor Pressure Measurement The vapor pressure measurement test methods covered in this manual are: ASTM D323 “Standard Test Method for Vapor Pressure of Petroleum Products ... ASTM D1267 “Standard Test Method for Gage Vapor Pressure of Liquefied Petroleum ͑LP͒ Gases ͑LP-Gas Method͒” ͓1͔, ASTM D4953 “Standard Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate...
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vapor pressure and antoine constants for hydrocarbons, springer (1999),
Ngày tải lên :
01/04/2014, 10:11
... Practical handling of any fluid requires knowledge of its vapor pressure, and vapor pressure (or boiling point) is invariably among the first properties measured for any substance Chemists and chemical ... rate of evaporation, not necessarily close to equilibrium, is established and measured Temperature is constant but pressure is not measured directly Rather, pressure is calculated from the evaporation ... rate of boiling or evaporation is established, and it is assumed that the pressure attained in this steady state is the same as the equilibrium pressure In careful experiments, pressures are measured...
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Optimization of injection timing and injection pressure of a DI diesel engine fueled with preheated rice bran oil
Ngày tải lên :
05/09/2013, 16:11
... 19, and 17° CA bTDC) and injection pressure (210, 220, 230, and 240 bar) at full load conditions at which the performance and emission parameters were measured An optimum injection timing and ... standard injection timing (23° deg bTDC) and injection pressure (200 bar) The performance and emission parameters at the standard injection timing and pressure were investigated The variation ... higher and the smoke was found to be lower at 21°CA bTDC of injection timing and 230 bar of injection pressure The optimum injection timing and injection pressure were evaluated as 21°CA bTDC and...
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Diffusion controlled growth of semiconductor nanowires vapor pressure versus high vacuum deposition
Ngày tải lên :
16/03/2014, 15:32
... earlier works, for example, by Dittmar and Neumann [25], Ruth and Hirth [26] and Blakely and Jackson [27] While in a given growth experiment the wire lengths and diameters are anyway dictated by ... f(R) but at different temperatures T and fluxes V Some data and on the L(T) and L(V) dependencies of MBE grown Ga(Al)As nanowires have been recently obtained and modeled in Refs [24,18] This paper ... to ffiwire sidewalls) and pffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi b ¼ ðrs ks Df =rf kf Ds Þ ffi Df ss =Ds sf Here and below rf and rs denote the areas of adsorption site on the wire sidewalls (f) and on the substrate...
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Water resources in England and Wales - current state and future pressures pptx
Ngày tải lên :
28/06/2014, 21:20
... England and Wales Environment Agency Water resources in England and Wales – current state and future pressures Supplying people with water 4.1 Current pressures Where people live in England and ... in England and Wales – current state and future pressures Using water in England and Wales 3.1 Using freshwater resources One way to consider how much we use water resources in England and Wales ... resources in England and Wales – current state and future pressures Future strategy The water resources across much of England and Wales are used intensively and are subject to significant pressures...
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Kidney and Blood Pressure Regulation - Contributions to Nephrology Vol. 143 pptx
Ngày tải lên :
29/06/2014, 11:20
... when the blood pressure falls below normal, the kidneys retain fluid, and the pressure normalized Neurohormonal and possibly other factors limit urine sodium excretion, thereby expanding extracellular ... stimulation of JGA and antinatriuresis can occur with levels of RSNA that not affect GFR and renal vascular resistance and (2) levels of RSNA that decrease RBF and GFR will stimulate JGA and produce ... decreased blood pressure, aortic, cervical, and renal Suzuki/Saruta nerve activity without significant changes in heart rate L-NMMA infusion increased blood pressure and aortic nerve activity and decreased...
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Báo cáo khoa học: "Evaporation and surface conductance of three temperate forests in the Netherlands" pdf
Ngày tải lên :
09/08/2014, 04:20
... canopy evaporation with minimum or no contamination by soil or wet canopy evaporation Note that the word evapora- tion is used to denote both transpiration (i.e dry canopy evaporation) and soil evaporation, ... paper aims to analyse the differences and similarities in evaporation and surface conductance of three temperate forests in the Netherlands Evaporation rates and surface conductances of the forests ... soil evaporation Certainly in the poplar stand some of this evaporation is caused by the soil and dead understorey (litter) as by that time leaves had already fallen off the canopy This evaporation...
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Báo cáo y học: "Phosphodiesterase 5 inhibitors lower both portal and pulmonary pressure in portopulmonary hypertension: a case repor" pot
Ngày tải lên :
11/08/2014, 10:22
... distance was 522 m Arterial blood gas analysis before and after six-minute walking test showed normal paO2 (74 and 75 mmHg) and paCO2 (35 and 32 mmHg) After exclusion of other causes of pulmonary ... vasoconstriction and proliferation of endothelial and smooth-muscle cells http://www.jmedicalcasereports.com/content/1/1/46 mean PAP CO CVP HVPG months Reduction minm2) 1therapy for and hepatovenous pressure ... diamond; mmHg) after a mmHg), cardiac output pressure triangle; Reduction of mean pulmonary arterial pressure (PAPmean; solid square; mmHg) and hepatovenous pressure gradient (HVPG; cross; mmHg), cardiac...
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Báo cáo y học: " Variability over time and correlates of cholesterol and blood pressure in systemic lupus erythematosus: a longitudinal cohort study" pptx
Ngày tải lên :
12/08/2014, 14:22
... SBP, and DBP, the mean ± SD and median number of measurements per patient were 20.8 ± 20.8 and 14, respectively The mean ± SD and median time interval between measurements were 5.6 ± 9.7 and 3.7 ... 3: Proportion of patients with normal and elevateda total cholesterol (TC), systolic blood pressure (SBP), and diastolic blood pressure (DBP) at baseline and during follow-up Variable Elevated ... lipid-lowering and antihypertensive therapy, but also with lupus activity and medications and other cardiovascular risk factors This study of variability and correlates of TC and BP was based...
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Báo cáo y học: " Importance of cumulative exposure to elevated cholesterol and blood pressure in development of atherosclerotic coronary artery disease in systemic lupus erythematosus: a prospective proof-of-concept cohort study" pdf
Ngày tải lên :
12/08/2014, 18:20
... sixmonthly intervals wherein clinical and laboratory data, including TC, systolic blood pressure (SBP) and diastolic blood pressure (DBP) levels are obtained and recorded according to a set protocol ... remained at a particular level The arithmetic mean and AM were reported in mmol/L for TC and mmHg for SBP and DBP In each patient, for each of TC, SBP and DBP, areaunder-the-curve (AUC) was calculated ... diabetes and smoking, medications including corticosteroids, antimalarials, immunosuppressives, anti-hypertensives and lipid-lowering therapy (‘statins’), all recorded at baseline, and at each and...
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Báo cáo y học: "Biphasic positive airway pressure and airway pressure release ventilation Christian Putensen1 and Hermann Wrigge2 for Anesthesiology and Intensive Care Medicine, Department of Anaesthesiology and Intensive Care" docx
Ngày tải lên :
12/08/2014, 20:20
... syndrome during continuous positive airway pressure (CPAP) and airway pressure release ventilation (APRV)/biphasic positive airway pressure (BiPAP) with and without spontaneous breathing Spontaneous ... Oxygen supply and demand balance The concomitant increase in cardiac index and arterial oxygen tension during APRV/BiPAP improved the relationship between tissue oxygen supply and demand because ... ventilation (CMV), intermittent mandatory ventilation (IMV) and biphasic intermittent positive airway pressure (BIPAP) on duration of intubation and consumption of analgesics and sedatives A prospective...
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Báo cáo y học: "Ischemia as a possible effect of increased intraabdominal pressure on central nervous system cytokines, lactate and perfusion pressures" ppsx
Ngày tải lên :
13/08/2014, 20:21
... intracardiac filling pressures used traditionally, such as central venous pressure (CVP), pulmonary arterial occlusion pressure (PAOP), left atrial pressure and left ventricular end-diastolic pressure This ... intra-abdominal pressure; ICP: intracranial pressure; ISP: intraspinal pressure; IQR: interquartile range; ITP: intrathoracic pressure; MAP: mean arterial pressure; PAOP: pulmonary artery occlusion pressure; ... PAOP = PAOP - IAP/2 and Transmural CVP = CVP - IAP/2 [37] Calculation of abdominal and CNS perfusion pressures Abdominal (APP), cerebral (CPP) and spinal (SPP) perfusion pressures were calculated...
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Báo cáo y học: "Arterial pressure-based cardiac output in septic patients: different accuracy of pulse contour and uncalibrated pressure waveform devices" docx
Ngày tải lên :
13/08/2014, 20:22
... Group and minutes after stabilization of mean arterial pressure was obtained in Group 2) This set included heart rate, systemic arterial pressure, CIpc, CIpw, CItd, and SVR The values of CIpc and ... arterial pressure, CItd, CIpc, CIpw, and systemic vascular resistance (SVR) We used the values of CIpc and CIpw that were automatically displayed on the screens of the commercial devices The CIpc and ... pressure was
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api 2000 venting atmospheric and low pressure storage tanks bản tiếng việt ( tham khảo nha)
Ngày tải lên :
05/09/2014, 15:48
... hoc h thng iu khin gõy dũng chy ca mụi trng gia nhit ỏo khoỏc ca xe tng tng, vaporhúa ca cht lng cha b cú th xy Khi vaporhúa xy ra, quỏ ỏp kt qu phi c thuyờn gim Nu mt chic xe tng c trỡ nhit ... Vent 37 C-6-vn hnh thớ im ỏp Vent (Single mng) 38 C-7-Hot ng thớ im PressureNacuum (Double mng) 39 v Trang 12 Trang Bn Yờu cu IA Nonna1 thụng giú (SCFH ca Air mi ... 31 Cl M Vent 33 C-2 Side-by-Side PressureNacuum Vent 35 C-3 ln Trng lng ct cỏnh khn cp Vent 35 C-4 trc Quyn L thụng hi...
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Performance of single and multiple pressure wind catchers in terms of air flow changes
Ngày tải lên :
09/09/2015, 10:32
... and architecture in hot and dry climate of Iran, Payam and Payvandeno, Tehran, (in Farsi) Tavasoli, M., 1982, the construction of city and architecture in hot and dry climate of Iran, Payam and ... effect of wind direction on the single -pressure and multiple -pressure wind catchers Therefore, we aim to study the performance of single -pressure and multiple -pressure wind catchers exposed to different ... the northern wall and through it which has caused a negative pressure zone at the back of all openings At the same time, the negative pressure in the outer west and east openings and outflow of...
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Derailing the future of economic growth demographic risks and financing pressures facing the UK SME economy
Ngày tải lên :
04/12/2015, 00:05
... pension age will rise from 60 for women and 65 for men, to 66 for both between 2018 and 2020, and then to 67 between 2026 and 2028 The national retirement age (and the inherent state pension liabilities) ... small and medium-sized enterprises (SMEs) face a complex mix of demographic and financing pressures – as baby-boomers reach retirement age – with worrying consequences for both SMEs themselves and ... surveyed 549 small business owners and directors in the UK to explore what SMEs think about the current economic landscape and how they are adapting in order to survive and succeed In addition, in-depth...
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Báo cáo y học: " High blood pressure, antihypertensive medication and lung function in a general adult population"
Ngày tải lên :
25/10/2012, 10:45
... position and with wearing noseclips The best results for FVC and FEV1 were taken and percent predicted values were calculated according Quanjer et al [18] Blood pressure, medication and other ... high blood pressure regardless of its medical treatment - B HBP or medication: high blood pressure or the use of antihypertensive medication - C HBP and medication: high blood pressure and the use ... between the abovementioned classes of high blood pressure and antihypertensive medication and lung function outcomes Additionally, high blood pressure and antihypertensive medication were used as...
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Báo cáo y học: "Effects of p-Synephrine alone and in Combination with Selected Bioflavonoids on Resting Metabolism, Blood Pressure, Heart Rate and Self-Reported Mood Changes"
Ngày tải lên :
25/10/2012, 11:04
... and serve as antioxidants and anti-inflammatory agents [12, 13] as well as hepatoprotectants [14] and neuroprotectants [15] However, the effects of naringin and hesperidin on metabolic rate and ... effects of p-synephrine alone and in combination with different amounts of hesperidin and naringin on: (1) resting metabolism, (2) blood pressure, (3) resting heart-rate, and (4) self-reported mood/energy ... hesperidin and 600 mg naringin Group 4: Advantra Z® with 100 mg hesperidin and 600 mg naringin Group 5: Advantra Z® with 1,000 mg hesperidin and 600 mg naringin After remaining seated and resting...
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Báo cáo y học: "Effect of Acute Administration of an Herbal Preparation on Blood Pressure and Heart Rate in Humans"
Ngày tải lên :
25/10/2012, 11:10
... in heart rate, and systolic and diastolic blood pressures for up to five hours Of interest is the fact that Min et al [18] used this same product in a similarly designed study and saw no effect ... used in weight loss and weight management products in combination with caffeine, polyphenolics, and other constituents [4-7] These products are designed to promote thermogenesis and increase metabolism, ... thermogenesis and increase metabolism, suppress appetite, and/ or slow the absorption of fats and carbohydrates [5] In spite of their widespread use and the lack of credible reports regarding adverse...
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Báo cáo y học: "Discriminating between elderly and young using a fractal dimension analysis of centre of pressure"
Ngày tải lên :
03/11/2012, 10:09
... the Lyapunov exponent, and determined COP data to be chaotic while five participants both a) stood still, and b) swung their arms while standing still Earlier, Collins and De Luca [9] had determined ... Hausdorff JM, and Goldberger AL Fractal mechanisms in neural control: Human heartbeat and gait dynamics in health and disease In: Walleczek J, Editor Nonlinear Dynamics, Self-Organization, and Biomedicine ... Collins JJ and De Luca CJ The effects of visual input on open-loop and closed-loop postural control mechanisms Exp Brain Res, 1995 103(1): 151-63 Blaszczyk JW and Klonowski W Postural stability and...
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