Results 51 to 60 of about 255,270 (305)

Carbon isotope effects in the sorption of chlorinated ethenes on biochar and activated carbon

Heliyon, 2023
As an alternative to activated carbon, biochar is a promising, environmentally friendly sorbent that can be used to remove organic groundwater pollutants, such as chlorinated ethenes (CEs).
Simon Leitner, Fridjof Sobanski, Gerhard Soja, Katharina Keiblinger, Christine Stumpp, Andrea Watzinger   +5 more
doaj   +1 more source

Molecular ions in L1544. II. The ionization degree [PDF]

, 2001
The maps presented in Paper I are here used to infer the variation of the column densities of HCO+, DCO+, N2H+, and N2D+ as a function of distance from the dust peak. These results are interpreted with the aid of a crude chemical model which predicts the
A. Zucconi, Anderson I. M., Bacmann A., C. M. Walmsley, Caux E., Guelin M., Hasegawa T. I., Krugel E., L. Dore, Leger A., M. Tafalla, Monteiro T. S., P. C. Myers, P. Caselli, Roberts H., Roueff E., Ruffle D. P., Tine S., Umebayashi T., Ungerechts H., Vandenbussche B., Vestel C.   +21 more
core   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Silicon Isotope Geochemistry: Fractionation Linked to Silicon Complexations and Its Geological Applications

Molecules, 2019
The fundamental advances in silicon isotope geochemistry have been systematically demonstrated in this work. Firstly, the continuous modifications in analytical approaches and the silicon isotope variations in major reservoirs and geological processes ...
Wei Wang, Hai-Zhen Wei, Shao-Yong Jiang, Xi Liu, Fang Lei, Yi-Bo Lin, Yao Zhao   +6 more
doaj   +1 more source

Effects of Temperature and Chemical Speciation of Mineral Elements on PM10 Formation during Zhundong Coal Combustion

Energies, 2022
Particulate matter (PM) pollution from coal combustion is a leading contributor to the influence of atmospheric visibility, photochemical smog, and even global climate.
Qiaoqun Sun, Zhiqi Zhao, Shizhang Wang, Yu Zhang, Yaodong Da, Heming Dong, Jiwang Wen, Qian Du, Jianmin Gao   +8 more
doaj   +1 more source

Isotopic Anomalies in Primitive Solar System Matter: Spin-state Dependent Fractionation of Nitrogen and Deuterium in Interstellar Clouds [PDF]

, 2012
Organic material found in meteorites and interplanetary dust particles is enriched in D and 15N. This is consistent with the idea that the functional groups carrying these isotopic anomalies, nitriles and amines, were formed by ion-molecule chemistry in ...
Charnley, S. B., Cordiner, M. A., Milam, S. N., Wirström, E. S.   +3 more
core   +3 more sources

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

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

Qualitative parameters of sugarcane silages treated with urea and calcium oxide

Semina: Ciências Agrárias, 2015
The objective was to evaluate the fermentation parameters, chemical composition and fractionation of carbohydrates of sugarcane silages treated with urea and calcium oxide (CaO).
Susi Cristina dos Santos Guimarães Martins , Gleidson Giordano Pinto Carvalho , Aureliano José Vieira Pires , Robério Rodrigues Silva , Laudi Cunha Leite , Fabiano Matos Pereira , Álvaro Diego Soares Mota , Isis Miranda Carvalho Nicory, Cláudia Horne da Cruz   +8 more
doaj   +1 more source

Consumer product chemical weight fractions from ingredient lists [PDF]

Journal of Exposure Science & Environmental Epidemiology, 2017
Assessing human exposures to chemicals in consumer products requires composition information. However, comprehensive composition data for products in commerce are not generally available. Many consumer products have reported ingredient lists that are constructed using specific guidelines.
Kristin K, Isaacs, Katherine A, Phillips, Derya, Biryol, Kathie L, Dionisio, Paul S, Price   +4 more
openaire   +2 more sources