نتایج جستجو برای: temperature and moisture fields

تعداد نتایج: 16933022  

Journal: :Geofluids 2022

This paper reviews the history of research development on coupling mechanism multiphysical field, e.g., thermo-hydro-mechanical (THM), for frozen soil. The objective is to deepen current understanding theories and field in soil dynamic changes temperature, moisture, stress fields during freezing. A new differential equation temperature moisture proposed. Based DiscreteFrechetDist algorithm, a f...

Journal: :Remote Sensing 2016
Shaoning Lv Yijian Zeng Jun Wen Donghai Zheng Zhongbo Su

Effective soil temperature Te f f is one of the basic parameters in passive microwave remote sensing of soil moisture. At present, dedicated satellite soil moisture monitoring missions use the L-band as the operating frequency. However, Te f f at the L-band is strongly affected by soil moisture and temperature profiles. Recently, a two-layer scheme and a corresponding multilayer form have been ...

ژورنال: علوم آب و خاک 2018

In this study, the values of moisture and soil temperature were estimated at different depths and times under unsteady conditions by solving the Richards’ equation in an explicit finite difference method provided in Visual Studio C#. For the estimation of soil hydraulic parameters, including av and nv (coefficients of van Genuchten’s equation) and Ks (saturated hydraulic conductivit...

Journal: :IEEE Trans. Instrumentation and Measurement 2001
Samir Trabelsi Andrzej W. Kraszewski Stuart O. Nelson

A new calibration technique was developed for Implementation with microwave moisture sensors. The calibration permittivity function used for this purpose allows computation of moisture content in granular materials with significant differences In shape, dimensions, and composition, independent of bulk density and with temperature compensation. A three dimensional (3-13) representation is used t...

2017
Mert Dedeoglu

In this study, an application was carried out to determine the Volcanic Soils by using remote sensing. The study area was located on the Golcuk formation in Isparta-Turkey. The thermal bands of Landsat 7 image were used for processing. The implementation of the climate model that was based on the water index was used in ERDAS Imagine software together with pixel based image classification. Soil...

Journal: :مهندسی بیوسیستم ایران 0
محمدامین نیری محمدحسین کیانمهر اکبر عرب محمدحسینی سیدرضا حسن بیگی بیگدلی

high moisture levels in fresh dairy manure provide a suitable environment for growth of pathogens and cause environmental pollution. dry manure can be used for different purposes in agriculture and in livestock industry. such heat properties of manure as specific heat, thermal conductivity and thermal diffusivity are important needed factors for the design and development of a suitable efficien...

2011
S. Peischl N. Ye J. P. Walker D. Ryu Y. H. Kerr

Soil moisture is an important environmental variable in regulating energy fluxes and water infiltration near the soil surface. This makes it a significant parameter in meteorological and climate modelling applications. While ground measurement of soil moisture at a large spatial scale is cumbersome and time-consuming, remote sensing offers the advantage of frequent observations in time and spac...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
h. afshari jooybari a. farahnaky m. majzoobi gh. mesbahi m. niakousari

mazafati date is a wet and semi-dried date fruit type with dark red to black color that has premier quality. because of its high moisture content, date fruits of this variety are very perishable at room temperature and therefore must be refrigerated during storage. in this study, effect of air temperature (50, 60, 70, 80 and 90 ˚c) and air flow rate (1, 1.5 and 2 m/s) in hot air drying of mazaf...

Journal: :Zoology 2018
Itzel Sifuentes-Romero Boris M Tezak Sarah L Milton Jeanette Wyneken

Experimental and field studies of different turtle species suggest that moisture influences embryonic development and sex ratios, wetter substrates tend to produce more males, and drier substrates produce more females. In this study, we used Trachemys scripta elegans to test the effect of moisture on embryonic development and sex ratios. T. s. elegans eggs were incubated under different tempera...

2011
Travis Roberts

The decomposition of organic matter is a major biogeochemical process because of its effect on ecosystem productivity and its implications on climate change. Temperature and moisture are two variables that have a tremendous influence on microbial decomposition. Decomposition is also influenced by substrate type, in which higher quality substrates often have greater decomposition than lower qual...

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