نتایج جستجو برای: 69 sensor in 5 moisture levels 21

تعداد نتایج: 17329672  

2007
J. P. Walker R. Panciera

Reliable soil moisture measurement over large areas is much needed for both hydrologic modelling and remote sensing applications. For collecting such data, portable electronic sensors offer a practical alternative to gravimetric measurements. The conversion of the measured electrical output to soil moisture is nonetheless a non-trivial task as it depends on soil type and temperature. In this st...

2017
Anamika Goswami Mahendra Kumar

Wireless sensor networks (WSN) are generally distributed independent sensors which work mutually to monitor all or some physical or ecological conditions, such as temperature sound, pressure, moisture, humidity etc. They are sometimes called as Wireless Sensors and Actuators Networks (WSAN) as well. Wireless Sensor Networks work thoughtfully to pass their information through the network by capa...

2008
A. Noormets A. R. Desai J. Chen

Ecosystem respiration (ER) was measured with the eddy covariance technique in 14 forest ecosystems in the Upper Great Lakes Region during the growing seasons of 2002 and 2003. The response of ER to soil temperature and moisture was analyzed using empirical models. On average, ER was higher in the intermediate and young than in the mature stands, and higher in hardwood than in conifer stands. Th...

Journal: :Weed Science 2021

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2007
J. P. Walker R. Panciera R. Young E. J. Kim

Reliable soil moisture measurements over large areas are much needed for both hydrologic modelling and remote sensing applications. For collecting such data, portable electronic sensors offer a practical alternative to gravimetric measurements. The conversion of the measured electrical output to soil moisture is nonetheless a non trivial task as it depends on soil type and temperature. In this ...

2010
Po-Hsien Tung Che-Hua Yang

This research focus on exploring the effects moisture absorbed by a layer of hygroscopic film coated on the wedge tip along that anti-symmetric flexural (ASF) modes propagate. A shear wave transducer is applied to measure the signals of wedge wave propagating along the wedge tips. Velocity of the ASF mode is indicated to decrease while the moisture is absorbed by the hygroscopic film. Also, the...

Journal: :Journal of animal science 1999
G L Huck K K Kreikemeier K K Bolsen

The objective of this study was to determine whether reconstituting field-dried and early-harvested sorghum grain affected the fermentation characteristics and feed value of the ensiled grain when fed to feedlot heifers. In Trial 1, sorghum grain was harvested at 14% moisture, rolled, and reconstituted to 25, 30, or 35% moisture, then ensiled in laboratory-scale silos. Lactic acid concentration...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

in this research, after conducting chemical tests on flour samples (moisture, ash, protein, fiber and ph), potato flour and xanthan gum were added to wheat four at levels 5, 10 and 15 percents and 0.5 and 1 percents, respectively, and subsequently production of toast bread in semi-industrial manner was started, then the qualitative characteristics (nutritional value) of toast breads were measur...

2007
Jesús Álvarez-Mozos María González-Audícana Javier Casalí

Radar based surface soil moisture retrieval has been subject of intense research during the last decades. However, the space-borne radar sensors available so far provided single configuration observations where the influence of surface roughness frequently caused the solution of the backscattering process to be ill-posed. The ENVISAT/ASAR sensor offers new perspectives since the alternating pol...

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