نتایج جستجو برای: exchangeable k

تعداد نتایج: 381121  

خنجری صادق, محمد,

Let T1,...,Tn be exchangeable random variables and suppose that T{1:n} represents the ith order statistic among Ti's, i=1,...,n. ‎In this paper some expressions for the joint distribution ‎of (T{1:n},...,T{n:n}), ‎marginal distribution of T{1:n} and the joint distribution of (T{r:n},T{k:n}), 1≤ r ≤ k ≤n ‎in terms of the joint...

ژورنال: علوم آب و خاک 2013
بهاره اسکندری, , مهدی سمواتی, ,

Quantity-Intensity (Q/I) curves and their derived parameters provide general information about soil Potassium (K) availability. This investigation was conducted to obtain K different varieties and their correlations with K, Q/I parameters in 13 soils sample from Bahar area as the major potato producing area in Iran. Soil Samples were equilibrated with solution containing different potassium act...

کاشانی مطلق, مهدی, قبادی, میترا , یوزباشی, امیر علی,

Gharenaz bentonite contains montmorillonite as the major mineral constituent and Ca as the major exchangeable cation. In the present study, the structural changes occurred in the course of acid activation of this bentonite was investigated by chemical analysis using  ICP-AES and phase analysis using XRD methods. Chemical analysis showed that most of the exchangeable cations i.e. K+, Na+ and Ca2...

Journal: :Spanish Journal of Agricultural Research 2021

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...

Journal: :Journal of Degraded and Mining Lands Management 2022

The inorganic fertilizer that is used excessively in tea plantations causes soil health degradation. Tea pruning residue and fluff are local biomass has the potential to be as alternatives nutrient input not well conducted plantation. This study evaluated biochar from of compost organic materials improve chemical properties plantations. were mixed Inceptisols a pot experiment with treatment com...

2016
R. Schoonheydt R. A. Schoonheydt

The exchangeable cations in dehydrated zeolites, types X and Y, are located on several energetically and coordinatively different sites. The number of vacant sites is of the same orde; of magnitude as the number of occupied sites. As a result, the motions of the cations as evidenced by the dielectric relaxation and electrical conductivity, are highly correlated. The dielectric relaxation can be...

Journal: :Agronomy 2023

The proportion of acidic purple soils has increased. Consequently, an effective method for amelioration is urgently needed. A 40 day incubation experiment using apple tree biochar, fermented sheep manure and chicken was conducted to assess the effects organic materials on acidity fertility soil. results showed that application increased soil pH decreased soil-exchangeable acidity. All treatment...

Journal: :SIAM J. Discrete Math. 2002
Ding-Zhu Du Frank K. Hwang Xiaohua Jia Hung Q. Ngo

A cyclic consecutive-k-out-of-n: G system consists of n components lying on a cycle. Those components are exchangeable but may have different working probabilities. The system works if and only if there are k consecutive components at work. What is the optimal assignment of components for maximizing the reliability of the system? Does the optimal assignment depend on the working probability val...

2002
Trent Wade Biggs Thomas Dunne Tomas Ferreira Domingues Luiz Antonio Martinelli

[1] We use a synoptic sampling of stream water to quantify the effect of soil type, rock type, deforestation extent determined by Landsat TM imagery, and urban population density on stream solute concentrations for 60 different watersheds in the dry season and 49 in the wet season in the southwestern Brazilian Amazon basin. Catchment areas range between 18 and 12,500 km. Soil exchangeable catio...

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