this study was conducted to investigate the effect of soil moisture content in primary tillage and travel speed during disking operation on the performance of an offset disk harrow in a silty clay loam soil. at first, the effect of three soil moisture content ranges of (12-14), (14-16) and (16-18) percent (dry basis) on soil clod size (left from moldboard plowing) was investigated. then, the pe...

a knowledge of soil surface conditions, especially desert crust, salt crust and desert varnish is useful for improving classification of remotely sensed data. desert crust can generate high levels of reflectance, similar to those areas with high salt concentration and non-saline soil. therefore, soil surface crusts might bias thematic remote sensing of soils. in this study, we evaluated the eff...

In this article we study the relation between flat solvmanifolds and $$G_2$$ -geometry. First, give a classification of 7-dimensional splittable using finite subgroups $$\mathsf{GL}(n,\mathbb {Z})$$ for $$n=5$$ $$n=6$$ . Then, look closed, coclosed divergence-free -structures compatible with metric on them. particular, provide explicit examples compact manifolds torsion-free -structure whose ho...

conclusions categorization of trials based on their classification scheme to investigate the efficacy of classification-based physical therapy could reduce the heterogeneity of trials and allow researchers to understand the contradictory results in this context. results a total of 12 rcts were identified and categorized into four classification schemes. some evidence supporting classification-s...

Specifying the soil types and profiling the subsurface soil layers are the excellent examples of CPTu test potentials. In this research, the capability of CPTu test for specifying subsurface soil layers and classification of sediments in Urmia Lake is investigated. According to previous studies, the sediments of Urmia Lake are commonly fine grained and soft deposits with organic materials. To e...

knowledge about spatial soil variation in terms of measured pedodiversity offers the possibility to estimate the quality and variance within a soil map. diversity indices and abundance distribution models are statistical tools which ecologists have applied for decades for analyzing the intrinsic regularities of various ecological entities. in this study relationships between soils evolution, la...

A molecular and pathological classification system for hepatocellular adenomas (HCAs) was recently introduced in Europe, resulting in four major identified subgroups. Asian countries have a considerably lower incidence of HCA as well as a different etiology. We aimed to characterize HCAs in a Chinese population based on this new classification system. A series of 30 patients with HCA were analy...

A number of subgroups of Polymyxa graminis have been separated on the basis of their rDNA sequence. Isolates of P. graminis found on temperate cereals can similarly be divided into two subgroups known as ribotypes I and II. Nothing is known about the biological significance of these ribotypes with regard to host range and virus transmission. Initial studies have been directed towards testing of...