نتایج جستجو برای: مدل air q
تعداد نتایج: 445349 فیلتر نتایج به سال:
In a 3-year lysimeter experiment we investigated how young trees of Quercus robur, Q. petraea and Q. pubescens, growing either on acidic loamy sand or calcareous sandy loam, responded to an elevation in air temperature by 1-2°C and drought periods lasting several weeks. As intended, the water potentials were clearly lower in drought-treated soil than in the control treatment. Decreased evapotra...
must be satisfied, whereRab is the correlation coefficient between any two turbulent flow variables, andw, T , and q are the vertical velocity, air temperature, and specific humidity turbulent perturbations respectively. In (2) (Equation (17) in BM97), any combination of w, T , and q can replace x, y and z. BM97 used Equation (2) to investigate under what conditions Equation (1) is valid and wh...
Data assimilation of dust aerosol observations for CUACE/Dust forecasting system T. Niu, S. L. Gong, G. F. Zhu, H. L. Liu, X. Q. Hu, C. H. Zhou, and Y. Q. Wang Center for Atmosphere Watch & Services (CAWAS), Chinese Academy of Meteorological Sciences, China Meteorological Administration (CMA), Beijing 100081, China Air Quality Research Division, Science & Technology Branch, Environment Canada, ...
BACKGROUND AND OBJECTIVE Analgesic cooling technologies are firmly established in dermatologic laser therapy. We present cold air as a novel method of cooling and compare it with those methods that are already in use. STUDY DESIGN/MATERIALS AND METHODS We treated 166 patients with the diagnoses hypertrichosis, port wine stains, hemangioma, essential telangiectasias, and tattoos with different...
The effect of ambient gas on the dynamics of the plasma generated by laser ablation of a carbon target using 1.06 mm radiation from a Q-switched Nd:YAG laser has been investigated using a spectroscopic technique. The emission characteristics of the carbon plasma produced in argon, helium and air atmospheres are found to depend strongly on the nature and pressure of the surrounding gas. It has b...
Prolonged air leak following bullectomy is a common problem and increases the morbidity of the procedure and hence the hospital stay for patients. Different surgical methods have been used to decrease the duration of the air leak. One of the common methods is the use of sealant material, synthetic or biological, over which either a stapler or suture closure is made. We report the use of the wal...
Regional activation of the brain was studied in humans using functional magnetic resonance imaging during whole body cooling that produced thermal comfort/discomfort. Eight normal male subjects lay in a sleeping bag through which air was blown, exposing subjects to cold air (88C) for 22 min. Each subject scored their degree of thermal comfort and discomfort every min. As the subjects reported m...
This paper presents recent developments and state of the art for transcritical CO2 cycle technology in various refrigeration, air-conditioning and heat pump applications. The focus will be on fundamental process and system design issues, including discussions of properties and characteristics of CO2, cycle fundamentals, methods of high-side pressure control, thermodynamic losses, cycle modifica...
The theory of summation of electromagnetic line transitions is used to tabulate the Taylor expansion of the refractive index of humid air over the basic independent parameters (temperature, pressure, humidity, wavelength) in five separate infrared regions from the H to the Q band at a fixed percentage of Carbon Dioxide. These are least-squares fits to raw, highly resolved spectra for a set of t...
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