Results 61 to 70 of about 7,029,640 (338)

Geochemistry of reduced inorganic sulfur, reactive iron, and organic carbon in fluvial and marine surface sediment in the Laizhou Bay region, China [PDF]

, 2015
Understanding the geochemical cycling of sulfur in sediments is important because it can have implications for both modern environments (e.g., deterioration of water quality) and interpretation of the ancient past (e.g., sediment C/S ratios can be used ...
Bottrell, S, Mortimer, R, Sheng, Y, Shi, W, Sun, Q   +4 more
core   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

FEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso, Jaime Hiniesta‐Valero, Alejandra Guerra‐Castellano, Miguel A. De la Rosa, Irene Díaz‐Moreno   +4 more
wiley   +1 more source

Clayey soils from Boulgou (North Cameroon): geotechnical, mineralogical, chemical characteristics and properties of their fired products

SN Applied Sciences, 2021
In this study, clayey soils are characterized as backfill and potential fusible raw materials for engineering. Geotechnical tests (particle size distribution, Atterberg limits, densities) and chemico-mineralogical analyses (X-ray fluorescence, X-ray ...
A. Nzeukou Nzeugang, D. Tsozué, B. Kagonbé Pagna, A. Balo Madi, A. Fankam Deumeni, S. Ngos, C. Nkoumbou, N. Fagel   +7 more
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Fluvial systems and their sedimentary models

Geologija, 1995
The Slovenian géomorphologie and sedimentologie terminology for fluvial depositional environments is not established yet. Therefore a classification and the proposal for Slovenian names of fluvial sedimentary and erosional forms and influences ...
Dragomir Skabeme
doaj  

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source

Study of Sedimentary Facies and Depositional Environment in Qamchuqa Formation at Northern Iraq [PDF]

Kirkuk Journal of Science, 2016
Qamchuqa Formation rocks are part of eighth cycle of the Arabian plate (AP8). The rock sequences of this cycle deposited in Late Tithonian - Early Turonian.
Nabil Y. Al-Banna, Zahra A. Hussein Al-Bayati   +1 more
doaj   +1 more source

Exon 7 splicing of ERα predicts poor prognosis and increases phenotypic heterogeneity in luminal a subtype breast cancer

FEBS Open Bio, EarlyView.
ERα splice variant ERα∆7 lacks the C‐terminus, and its expression may change phenotypes of breast cancers. Our results showed that ERα∆7 is found in the luminal A subtype, and elevated ERα∆7 levels are linked to improved cell survival with lower proliferation and migration.
Long Wai Tsui, Taobo Hu, Thomson Christian Husein, Wai Hei Shek, Bingrong Chen, Depeng Wang, Shu Wang, Weichuan Yu, Xiaodan Fan, Mengping Long, Toyotaka Ishibashi   +10 more
wiley   +1 more source

Microbial structures as sedimentary environments indicators in limestones of the Kizel regional substage on the Middle Urals eastern slope

Литосфера, 2017
The microbial structures of various genesis are rock-forming components in limestones of the Kizelovian regional substage (the Tournaisian stage) on the Middle Urals eastern slope.
Semen A. Dub (Sapurin)
doaj   +2 more sources

Factores físico - naturales que controlan los procesos depositacionales en un humedal costero tropical caribeño: Salina de Sauca, Estado Falcón, Venezuela PHYSICAL AND NATURAL FACTORS CONTROLLING DEPOSITIONAL PROCESS IN A HUMID CARIBBEAN TROPICAL COASTLINE: SAUCA SALT MINES, FALCÓN STATE, VENEZUELA

Investigación y Postgrado, 2003
El propósito de este trabajo es caracterizar y analizar los factores físico-naturales que controlan los procesos de sedimentación en el complejo sedimentario isla barrera-laguna litoral salina de Sauca.
Williams Méndez, Scarlet Cartaya
doaj