Results 71 to 80 of about 6,179,886 (326)

Extraction Behaviors of Lignin and Hemicellulose-Derived Sugars During Organosolv Fractionation of Agricultural Residues Using a Bench-Scale Ball Milling Reactor

Energies, 2020
Ethanol organosolv fractionation combined with ball milling was conducted on three major agricultural residues: Rice husk (RH), rice straw (RS), and barley straw (BS).
Tae Hoon Kim, Hyun Kwak, Tae Hyun Kim, Kyeong Keun Oh   +3 more
doaj   +1 more source

Fractionation of Irradiated Cholesterol: Chemical Observations.

Experimental Biology and Medicine, 1926
One of us recently reported1 that cholesterol, as a result of exposure in air to light from the mercury-vapor quartz lamp, reacted differently from the untreated cholesterol towards a reagent consisting of aniline and concentrated hydrochloric acid. With the aid of this color reaction, fractionation of irradiated cholesterol was undertaken.
M. J. Shear, B. Kramer
openaire   +1 more source

Carbon isotope fractionation and depletion in TMC1

, 2012
12C/13C isotopologue abundance anomalies have long been predicted for gas-phase chemistry in molecules other than CO and have recently been observed in the Taurus molecular cloud in several species hosting more than one carbon atom, i.e.
Adande, Balser, Bensch, Boger, Burgh, Cambrésy, Flower, Furuya, Gerin, Goldsmith, H. S. Liszt, L. M. Ziurys, Lis, Liszt, Lucas, Maezawa, Milam, Ohishi, Pineda, Pratap, Sakai, Sheffer, Smith, Sonnentrucker, Takano, Wakelam, Willacy, Wilson, Wilson, Wolfire, Woods   +30 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Chemical Speciation and Characterization of Trace Metals in Dry Camellia sinensis and Herbal Tea Marketed in Nigeria

Journal of Health and Pollution, 2018
Background. Trace metals from anthropogenic activities have been found to occur in tea brands and pose potential human health risks to consumers. Objectives.
Omowunmi H. Fred-Ahmadu, Adebusayo E. Adedapo, Mary O. Oloyede, Nsikak U. Benson   +3 more
doaj   +1 more source

Stable Isotope Fractionation of Metals and Metalloids in Plants: A Review

Frontiers in Plant Science, 2022
This work critically reviews stable isotope fractionation of essential (B, Mg, K, Ca, Fe, Ni, Cu, Zn, Mo), beneficial (Si), and non-essential (Cd, Tl) metals and metalloids in plants.
Matthias Wiggenhauser, Rebekah E. T. Moore, Peng Wang, Gerd Patrick Bienert, Kristian Holst Laursen, Simon Blotevogel   +5 more
doaj   +1 more source

Physico-chemical characterisation of petroleum fractions

CT&F - Ciencia, Tecnología y Futuro, 1995
A complete physicochemical charaterization of several crude oil fractions is accomplished and nuclear magnetic resonance of 13C and 1H, column chromatography, mass spectrometry and empiric correlations  are used to establish their chemical composition.
C. A. BALDRICH, L. A. NOVOA, J. R. MARTÍNEZ, D. MOLINA   +3 more
openaire   +1 more source

Manganese and zinc in acidic agricultural soils from Central Spain: Distribution and phytoavailability prediction with chemical extraction tests [PDF]

, 2009
The extractability and distribution of manganese (Mn) and zinc (Zn) were evaluated in acidic agricultural soils from Central Spain. Both single (0.1 M hydrochloride [HCl] and 0.05 M ethylenediaminetetraacetate [EDTA]) and sequential extraction procedures
López Valdivia, Luis Manuel, Novillo Carmona, Jesus, Obrador Pérez, Ana Francisca, Rico Selas, M.Isabel, Álvarez Álvarez, José Manuel   +4 more
core   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Isospin fractionation in the nucleon emissions and fragment emissions in the intermediate energy heavy ion collisions

, 2003
The degree of isospin fractionation is measured by $(N/Z)_{n}$ / $(N/Z)_{N_{imf}}$, where $(N/Z)_{n}$ and $(N/Z)_{N_{imf}}$ are the saturated neutron-proton ratio of nucleon emissions (gas phase) and that of fragment emissions (liquid phase) in heavy ion
Aichelin, Aichelin, Alkahzov, Baran, Bertsch, Colonna, Danielewicz, Di Toro, Hang Liu, Jian-Ye Liu, Klakow, Kunde, Li, Li, Li, Li, Li, Liu, Liu, Liu, Miller, Pak, Pak, Pak, Pak, Rami, Reinhard, Sobotka, Sobotka, Tsang, Udo Schröder, Wada, Wen-Jun Guo, Westfall, Westfall, Xu, Yang, Yennello, Yennello, Yong Zhong Xing   +39 more
core   +1 more source