Results 31 to 40 of about 472,341 (252)
The Iraqi Journal of Agricultural science, 2017 Field experiments were conducted at the Research Station College of Agriculture, University of Basra at Garmat Ali district. The experiments were carried out during the winter season 2012-2013 in clay loam soil. The purpose of the research was to study
K. A. AL-Mosawi, S. S. Al-Hadi
doaj +1 more source
Frontiers in Microbiology, 2015 Arbuscular mycorrhizas possess well developed extraradical mycelium (ERM) network that enlarge the surrounding soil for better acquisition of water and nutrients, besides soil aggregation. Distinction in ERM functioning was studied under a rootbox system,
Ying-Ning eZou +3 more
doaj +1 more source
The Statistical Bias of he Weight Mean Particle Diameter
Chemical engineering, 1968 個数基準のデータから計算された重量平均粒径の統計的偏りについて検討した。モンテカルロ法シミュレーションで求めた相対的偏り△n=1-E (x wn)/Xw は D (x 3) E (x3)} 2/n に対するプロットとしてほぼ整理できる。ここにxは粒径, xwn は標本重最平均径, XW は真の重量平均径, nはサンブルサイズである。{D (x3)/E (x3) } 2 が大きい母集団から Xw の偏りのない推定値を得るためには予傭的な分級が必要かつ有効である。
Mori, Yoshiro, Suganuma, Akira
openaire +2 more sources
Demonstration of a Consistent Relationship between Dual-Frequency Reflectivity and the Mass-Weighted Mean Diameter in Measurements of Frozen Precipitation from GCPEX, OLYMPEX, and MC3E [PDF]
Journal of the Atmospheric Sciences, 2021 AbstractThe retrieval of the mass-weighted mean diameter (Dm) is a fundamental component of spaceborne precipitation retrievals. The Dual-Frequency Precipitation Radar (DPR) on the Global Precipitation Measurement (GPM) satellite is the first satellite to use dual-wavelength ratio measurements—the quotient of radar reflectivity factors (Z) measured at ...
George Duffy +3 more
openaire +1 more source
A Study of Some Physical Properties of Two Different Soil Textures Planted with Conocarpus Trees (Conocarpus lancifolius. Engl) [PDF]
Al-Qadisiyah Journal For Agriculture Sciences, 2017 This research has been conducted to study the effect of Conocarpus trees and their roots on some of soil physical properties. The soil physical properties are moisture content , bulk density , total porosity , mean weight diameter (dry sieveing) and soil
Kawthar A. AL- Mosawi +1 more
doaj +1 more source
Soil Aggregate Stability Mapping Using Remote Sensing and GIS-Based Machine Learning Technique
Frontiers in Earth Science, 2021 Soil aggregate stability (SAS) is a critical parameter of soil quality and its mapping can help determine erosion hotspots. Despite this importance, SAS is less documented in available literature due to limited number of analyzes besides being a time ...
Yassine Bouslihim +6 more
doaj +1 more source
EFFECT OF TILLAGE SYSTEM, PULVERIZATION TOOLS AND TRACTOR SPEEDS ON PRODUCTIVITY, MEAN WEIGHT DIAMETER AND RATE WATER INFILTRATION [PDF]
Misr Journal of Agricultural Engineering, 2009 A field experiment was conducted at Abu-Ghraib during 2007-2008 to study the effect of ploughing system, pulverization tools and tractor speeds on machinery group, mean weight diameter and rate water infiltration. In this study, two tractor's speed; (2.414 and 3.973 km/h) represented the main plots, two types of plows: mold board plow and chisel ...
Abdulrazzak A. Jasim +1 more
openaire +1 more source
Evaluation of the Efficiency of Rice (Oryza sativa L.) Straw Checkerboard Barriers Technique on Moisture Retention, CO2 Production, and Soil Microbial Population [PDF]
بوم شناسی کشاورزی, 2023 IntroductionThe incidence of drought periods and its continuity in arid and semi-arid areas is considered one of the factors affecting soil microbial population and activity and soil water content, and thus affect soil fertility and nutrient availability.
Elahe Ahmadpoor Dehkordi +3 more
doaj +1 more source
Friction and Wear of Polyamide 66 Composites Filled with RB Ceramics Particles under Dry Condition
Tribology Online, 2010 This study investigated the effect of a particle diameter and a weight fraction of RB ceramics particles on friction and wear of polyamide 66 composites filled with RB ceramics particles (PA66/RB ceramics composites) sliding against a bearing steel ball ...
Motoharu Akiyama +3 more
doaj +1 more source
International Journal of Environment and Climate Change, 2023 The present study was carried out at JNKVV, Jabalpur (23010’ N latitude, 79057’ E longitudes and at elevation 393.0 meters above mean sea level). This study was carried out in 2019 that laid out in split plot design with nine main treatments of land use practices (forest land, perennial forage land, uncultivated land, aonla orchard, rice-wheat system ...
Anil Kumar +4 more
openaire +1 more source