نتایج جستجو برای: exchangeable ions
تعداد نتایج: 140372 فیلتر نتایج به سال:
We introduce two new bootstraps for exchangeable random graphs. One, the “empirical graphon bootstrap”, is based purely on resampling, while other, “histogram a model-based “sieve” bootstrap. show that both of them accurately approximate sampling distributions motif densities, i.e., normalized counts number times fixed subgraphs appear in network. These densities characterize distribution (infi...
Salt-affected soils are related to salinity (high content of soluble salts) and/or sodicity (excess sodium), which major leading causes agricultural land degradation. This study aimed evaluate the performances three machine learning (ML) algorithms in predicting soil exchangeable sodium percentage (ESP), electrical conductivity (ECe), and salt-affected classes, from salt ions. The assessed ML m...
C.2 Exchangeable correlation structure Suppose that, among the coordinates of Yi | μ, τi, σ i , a set of variables is exchangeable in the sense that the correlation matrix C remains unchanged under any permutation of these variables. In this case, the following proposition shows that an optimal D based on the correlation matrix C = V−1/2ΣV−1/2 has equal diagonal elements at the exchangeable coo...
Although addition of amendment materials to soil is not for changing of soil K status, secondary effects of these materials can be important in K distribution among soluble, exchangeable and non-exchangeable forms. In this research, effect of addition of 2% zeolite, 2% vermicompost and 1% zeolite+ 1% vermicompost on 10 calcareous soils of Fars province belonging to five orders was investigated....
Several methods for determining exchangeable sodium in human subjects by using the gammaray emitter Na22 (half-life 2.6 years) in conjunction with measurements of body radioactivity have previously been described (1-3). With these methods, it is possible to make repeated exchangeable sodium determinations over a period of several weeks or months after giving a single tracer dose of the radioiso...
Let Ω be a Borel subset of SN where S is countable. A measure is called exchangeable on Ω, if it is supported on Ω and is invariant under every Borel automorphism of Ω which permutes at most finitely many coordinates. De-Finetti’s theorem characterizes these measures when Ω = SN. We apply the ergodic theory of equivalence relations to study the case Ω 6= SN, and obtain versions of this theorem ...
ABSTRACT- Different soil potassium (K) pools including soluble, exchangeable and non-exchangeable in surface and subsurface soils may be totally used by canola roots at different growth stages under drought conditions. A field experiment was conducted for one growing season (2013-2014) to study K pools changes during growth stages of two rapeseed cultivars under drought. The experiment was arra...
The mechanism of the antihypertensive effect of chlorothiazide does not difler from that of such potent salt-depleting therapeutic agents as the mercurial diuretics and tlw rice diet. The extracellular fluid and plasma volumes are reduced and, as 44 result, right hecrrt filling pressure, cardiac output, and blood pressure (if abnormally elevated by some pressor stimu1u.y) fall. Becal4se of the ...
Blood acid-base regulation following exhaustive exercise was investigated in freshwater(FW) and seawater(SW) adapted rainbow trout (Salmo gairdneri) of the same genetic stock. Following exhaustive exercise at 10°C, both FW and SW trout displayed a mixed respiratory and metabolic blood acidosis. However, in FW trout the acidosis was about double that of SW trout and arterial blood pH took twice ...
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