نتایج جستجو برای: na metasomatism

تعداد نتایج: 267212  

Journal: :Contributions to Mineralogy and Petrology 2021

Abstract Whiteschists from the Monte Rosa Nappe were examined in field as well with petrographic, geochemical, and isotopic methods to constrain controversial origin of these rocks their Alpine metamorphic context. occur ellipsoidal-shaped, decametric-sized bodies, within a Permian metagranite, consist mainly chloritoid, talc, phengite, quartz. The transition whiteschist metagranite is marked b...

2016
Dimo PENKOV Matina NIKOLOVA

An investigation of Vemo Herb® additive on the forage consumption rate in Japanese quail (Pharaoh breed) has been conducted. The experiment was carried out for 10 weeks with 52 female and 16 male sexually matured Japanese quails (Coturnix coturnix japonica) distributed in four groups: control group (without additive), first experimental group 4 mg*kg of live weight for 10 weeks; second experime...

2005
ALAN B. WEDER M. ANDREW FITZPATRICK BARBARA A. TORRETTI ALAN L. HINDERLITER BRENT M. EGAN STEVO JULIUS

Red blood cell Li-Na countertransport and Na-K cotransport activities, home blood pressure, invasive systemic hemodynamics, and limb venous compliance were measured in 65 white men (23 normotensive, 22 borderline hypertensive, and 20 mild essential hypertensive subjects). Li-Na countertransport activity was positively and significantly correlated with subject-determined home systolic blood pres...

2013
Jason B. Sylvan Tiffany Y. Sia Amanda G. Haddad Lindsey J. Briscoe Brandy M. Toner Peter R. Girguis Katrina J. Edwards

The East Lau Spreading Center (ELSC) and Valu Fa Ridge (VFR) comprise a ridge segment in the southwest Pacific Ocean where rapid transitions in the underlying mantle chemistry manifest themselves as gradients in seafloor rock geochemistry. We studied the geology and microbial diversity of three silicate rock samples and three inactive sulfide chimney samples collected, from north to south, at t...

Journal: :journal of agricultural science and technology 2013
f. shahriari ahmadi b. panahi h marashi n. moshtaghi a. mirshamsi kakhki

vacuolar h+-translocation pyrophosphatase (v-ppase) and na+/h+ antiporter (v-na+/h+) are important transporters in plant cells and have essential roles against abiotic stresses. in this study, the effects of salt stress were surveyed on the transcription of v-ppase pump and na+/h+ antiporter genes at early times of nacl treatment in roots of halophytic grass leptochloa fusca through the real ti...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1991
gholam abbas parsafar y. ghayeb

thermal behavior of various solid feldspars are different, namely those of bivalent cations show no change in the distribution of al and si atoms, whereas feldspars of univalent cations become more disordered with raising temperature. in the latter case al atoms migrate from the sites they occupe at low temperatures and interchange positions with the si atoms. at high temperatures (but still be...

2004
CAHİT HELVACI FEDERICO ORTÍ

The Kırka borate deposit (Miocene), in western Turkey, the most important B2O3 producer at present in the world, exhibits a symmetrical zonation in a lateral sense; it is comprised of: a central body of Na borate (borax), an intermediate zone of Na–Ca borate (ulexite), and a marginal zone of Ca borate (colemanite). This mineral zonation is also developed in a vertical sense, although it is some...

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