Results 91 to 100 of about 26,831 (245)

Chlorite, corrensite, and chlorite-mica in Late Jurassic fluvio-lacustrine sediments of the Cameros Basin of Norheastern Spain [PDF]

, 2000
The distribution and crystal-chemical characteristics of chlorite, eorrensite, and mica in samples from a stratigraphic profile in the Cameros basin are controlled by changes in the sedimentary facies.
Rodas González, Magdalena, Frey, Martín, Fernández Barrenechea, José María, Mas Mayoral, José Ramón, Alonso Azcárate, Jacinto   +4 more
core   +1 more source

DIFFERENTIATION AND BALANCE OF MINERALS DURING TRANSFORMATION OF THE OPEN SURFACE OF ARABLE SOILS UNDER THE IMPACT OF RAIN

Бюллетень Почвенного института им. В.В. Докучаева, 2019
During the model experiment the changes in the mineralogical composition of the open surface of arable soil (leached chernozem, gray forest soil, sod-podzolic soil) under the impact of raindrops under fallow conditions were studied.
E. Yu. Prudnikova, E. B. Varlamov, N. A. Churilin, A. E. Churilina   +3 more
doaj   +1 more source

Technologies of Transition: Pottery Production and Specialization in Early Rome and Its Neighbors. Neutron Activation Analysis of Regional Assemblages and a Mineralogical‐Petrographic Study of Impasto Chiaro‐Sabbioso

Archaeometry, EarlyView.
ABSTRACT The following paper investigates ceramic production and signs of specialization in Rome and the wider region during the early first millennium bce, through an archaeometric approach using Instrumental Neutron Activation Analysis (NAA), and complementary techniques.
Mattia D'Acri, Maria Verde, Alberto De Bonis, Vincenzo Morra, Brandi L. MacDonald   +4 more
wiley   +1 more source

Oxidative aromatization of Hantzsch 1,4-dihydropyridines by sodium chlorite

, 2010
Hantzsch 1,4-dihydropyridines were converted to the corresponding pyridines efficiently by sodium chlorite under mild conditions in excellent yields. (C) 2010 Elsevier Ltd.
Lin, Wenbin, Liao, Xiali, Lu, Jun, Wang, C, Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China, Wang, Chun   +4 more
core  

Mapping the Dominant Clay Minerals in the Soils of Isfahan Province and Their Relationship with Climate and Parent Materials

علوم آب و خاک, 2020
Understanding the abundance of clay minerals in soil and also, their spatial variability can provide more comprehensive information about soil properties, behavior and functions.
F. Khayamim, H. Khademi, S. Ayoubi
doaj  

Unraveling the active site cover of coproheme decarboxylase from Listeria monocytogenes

The FEBS Journal, EarlyView.
During heme biosynthesis in Gram‐positive bacteria, coproheme decarboxylase (ChdC) catalyzes the conversion of four‐propionate substrate coproheme to the two propionate product heme b. Its active site is universally covered by a flexible linking loop. This study identifies an important histidine residue, which stabilizes the loop in a ChdC homolog.
Nikolaus Falb, Dominik Hörtnagel, Chris Oostenbrink, Paul G. Furtmüller, Stefan Hofbauer   +4 more
wiley   +1 more source

The origin of chlorite-rich shale nodules found in the Miocene Aoki Formation in Matsumoto City, central Japan [PDF]

Chlorite-rich shale nodules have been discovered in the Miocene Aoki Formation in Matsumoto City, Nagano Prefecture, central Japan. The present work assessed the mode of occurrence and the internal structures of these nodules along with the proportion of
Ejima, Terumi, Morikiyo, Toshiro
core  

The Morphological Characteristics of Clay Minerals in a Tight Sandstone Reservoir by Atomic Force Microscopy

Yankuang ceshi
Clay minerals, as one of the main components of unconventional oil and gas reservoirs, have significant implications for the evaluation of unconventional oil and gas reservoirs in terms of their fine characterization of nano/sub-nano morphological ...
Kunyang WANG, Gu DU, Guan WANG, Jiale HE
doaj   +1 more source

The Mineral Composition of Fine-Dispersed fractions (<1, 1-5, 5-10 μm) of agro soddy-podzolic soils with complicated organic profile in Kama River area within Vyatka region

Бюллетень Почвенного института им. В.В. Докучаева, 2016
The mineral composition of the fine fractions (
N. P. Chizhikova, A. M. Prokashev
doaj   +1 more source

New ion-chromatography method for detection of chlorite, chlorate and bromate in drinking water

Romanian Journal of Ecology & Environmental Chemistry, 2020
A direct ion chromatographic method for determination of chlorite, chlorate and bromate in the presence of fluoride, chloride, nitrate, nitrite and bromide in treated drinking waters was described. Separation of target analytes was achieved using an AS19-
Iuliana Paun, Vasile Ion Iancu, Florentina Laura Chiriac, Nicoleta Vasilache, Florinela Pirvu, Marcela Niculescu, Toma Galaon   +6 more
doaj   +1 more source