نتایج جستجو برای: air freezing index

تعداد نتایج: 610968  

Journal: :environmental health engineering and management 0
saeed motesaddi department of environmental health engineering, school of public health, shahid beheshti university of medical sciences, tehran, iran parviz nowrouz environmental health engineering, department of environmental health engineering, school of public health, sulfur dioxide aqi modeling by artificial neural network in tehran between 2007 and 2013 saeed motesaddi 1 , parviz nowrouz 2* , behrouz alizadeh 3 , fariba khalili 4 , reza nemati 2 1 associate professor, department of environmental health engineering, school of public health, shahid beheshti university of medical sciences, tehran, iran 2 shahid beheshti university of medical sciences, tehran, iran behrouz alizadeh department of medical informatics, school of allied medical sciences, shahid beheshti university ph.d student of environmental health engineering, department of environmental health engineering, school of public health, sulfur dioxide aqi modeling by artificial neural network in tehran between 2007 and 2013 saeed motesaddi 1 , parviz nowrouz 2* , behrouz alizadeh 3 , fariba khalili 4 , reza nemati 2 1 associate professor, department of environmental health engineering, school of public health, shahid beheshti university of medical sciences, tehran, iran 2 shahid beheshti university of medical sciences, tehran, iran 3 of medical sciences, tehran, iran fariba khalili department of environmental health engineering, school of public health, shahid beheshti university of medical sciences, tehran, iran reza nemati department of environmental health engineering, school of public health, shahid beheshti university of medical sciences, tehran, iran

background: air pollution and concerns about health impacts have been raised in metropolitan cities like tehran. trend and prediction of air pollutants can show the effectiveness of strategies for the management and control of air pollution. artificial neural network (ann) technique is widely used as a reliable method for modeling of air pollutants in urban areas. therefore, the aim of current ...

Journal: :The Cryosphere 2021

Abstract. The flexural strength of ice surfaces bonded by freezing, termed freeze bond, was studied performing four-point bending tests freshwater S2 columnar-grained samples in the laboratory. were prepared milling two pieces, wetting with water varying salinity, bringing these together, and then letting them under a compressive stress about 4 kPa. salinity used for to generate bond varied fro...

Journal: :International Journal Of Petrochemical Science & Engineering 2018

2006
H. KRAMER R. G. HILL

MANY of the conventional types of freezing-drying apparatus employ an oil or mercury diffusion-pump, backed by a rotary pump, to obtain the high vacua necessary to ensure that the water molecules which escape from the specimens have sufficient mean free path to enable them to reach the vapour trap. Clearly, the efficiency of the freezing-drying process might be greatly increased if the specimen...

Journal: :American Journal of Engineering and Applied Sciences 2008

Journal: :Journal of animal science 2013
J E Hergenreder J J Hosch K A Varnold A L Haack L S Senaratne S Pokharel C Beauchamp B Lobaugh C R Calkins

The objective of this study was to evaluate processing methods for frozen beef subprimals; the effects of freezing and thawing rates on tenderness, sensory properties, and retail display were evaluated. There were 6 treatments: fresh, never frozen 14 d wet aged (14D); fresh, never frozen 21 d wet aged (21D); blast frozen-fast thawed (BF); blast frozen-slow thawed (BS); conventionally frozen-fas...

Journal: :Tree physiology 1996
S C Grossnickle B C Sutton R S Folk R J Gawley

Eight populations of Sitka spruce (Picea sitchensis (Bong.) Carr.) and interior spruce (Picea glauca (Moench) Voss x Picea engelmannii Parry ex. Engelm.) seedlings were sampled from a zone of Sitka-interior spruce introgression in British Columbia, Canada. Restriction fragment length polymorphisms of the nuclear ribosomal RNA genes (rDNA) were used to define species-specific hybridization patte...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2004
James C Schadt Eileen M Hasser

In the conscious rabbit, exposure to an air jet stressor increases arterial pressure, heart rate, and cardiac output. During hemorrhage, air jet exposure extends the blood loss necessary to produce hypotension. It is possible that this enhanced defense of arterial pressure is a general characteristic of stressors. However, some stressors such as oscillation (OSC), although they increase arteria...

Journal: :آب و خاک 0
احمد نظامی جواد رضایی بهداد علیزاده

abstract the grasses cold tolerance is the most important limiting factor for its cultivation in temperate regions, so using cold tolerant cultivars is essential for grasses successful cultivation. in order to evaluation freezing stress tolerance of several species of grasses, this study was conducted in agricultural faculty of ferdowsi university of mashhad as a factorial complete randomized b...

Journal: :Medical mycology 2014
George Kimpton P Lewis White Rosemary A Barnes

Galactomannan enzyme immune assay (GM EIA) is a nonculture test for detecting invasive aspergillosis (IA) forming a key part of diagnosis and management. Recent reports have questioned the reproducibility of indices after sample storage. To investigate this, 198 serum samples (72 from cases and 126 from controls) and 61 plasma samples (24 from cases and 37 from controls), initially tested betwe...

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