potassium (k) is an essential element for plant growth and development and its importance in agriculture is well known. it plays an important role in improving the quality of agricultural products. besides, micaceous minerals are abundant in iranian soils. the role of plant species in potassium uptake from minerals is significant; but not well investigated. therefore, the objective of this rese...

Aim of the study: Firstly, to evaluate K dynamics soils through a quantity-intensity isotherm study; and secondly, characterize on basis (Q/I) parameters.Area Gazipur, BangladeshMaterial methods: Eleven collected from major agro-ecological zones in Bangladesh were evaluated for their varying parameters, supplying capacities these described.Main results: The Q/I plot showed both linear polynomia...

The physiologic and clinical implications of the empirical formula originally discovered by Edelman et al [J Clin Invest 37:1236-1256, 1958] relating the plasma water sodium concentration ([Na(+)](pw)) to the total exchangeable sodium (Na(e)), total exchangeable potassium (K(e)), and total body water (TBW) have recently been elucidated. It is quite remarkable that the full significance of the E...

In partitioning-­‐-­‐-­‐a.k.a. clustering-­‐-­‐-­‐data, we associate each data point with one and only one of some collection of groups called clusters or partition blocks. Here, we formally establish an analogous problem, called feature allocation, for associating data points with arbitrary non-­‐negative integer numbers of groups, now called features or topics. Just as the exchangeable partit...

Problem 1.5.7 from Pitman’s Saint-Flour lecture notes [11]: Does there exist for each n a fragmentation process (Πn,k, 1 ≤ k ≤ n) such that Πn,k is distributed like the partition generated by cycles of a uniform random permutation of {1, 2, . . . , n} conditioned to have k cycles? We show that the answer is yes. We also give a partial extension to general exchangeable Gibbs partitions.

abstract heated micaceous minerals under different commercial brand names (including vermiculite) are used as culture medium in greenhouses. heating minerals affects the release of elements, such as potassium, by changing their structure. the present study, investigates the ability of alfalfa, as one of the most important fodder around the world, to take up the non-exchangeable and structural p...

Smectite clays demonstrate high affinities for nitroaromatics that strongly depend on the exchangeable cation. The K-smectites have high affinities for nitroaromatics, but Ca-smectites do not. Here we evaluate the ability of K-smectite to attenuate the bioavailability and hence toxicity of 2,4-dinitrotoluene (2,4-DNT) to the aquatic plant duckweed. In the absence of K-smectite, 2,4-DNT was high...

Brebes Regency, Central Java, is one of Indonesia's most important shallot production center implementing intensive agriculture. In the bulb production, K needed more than other nutrients. This study aimed to assess and describe adsorption characteristics on soils farming system in District, Java. Soil samples were collected at several locations areas Java Province. The observed soil properties...

Sorption of carbaryl (1-naphthyl-N-methyl-carbamate) from aqueous suspension to smectite was studied using Fourier transform infrared (FTIR), high-performance liquid chromatography (HPLC) (for batch sorption), and quantum chemical methods. The amount of carbaryl sorbed was strongly dependent on the surface-charge density of the smectite with more sorption occurring on the two "low" surface-char...