Results 61 to 70 of about 116,875 (192)

Solar neutrino-electron scattering as background limitation for double beta decay

, 2011
The background on double beta decay searches due to elastic electron scattering of solar neutrinos of all double beta emitters with Q-value larger than 2 MeV is calculated, taking into account survival probability and flux uncertainties of solar ...
Abt I, Avignone F T, Barea J Iachello F, Chen M C, Elliott S R, Gomez-Cadenas J J, K Zuber, N F de Barros, Nakamura K, None C, Schwenke M, Schwetz T Tortola M Valle J W F, See, Sekiya H, Serenelli A, Terashima A, Álvarez V (NEXT Collaboration)   +16 more
core   +1 more source

Differentiating signals to make biological sense – a guide through databases for MS-based non-targeted metabolomics [PDF]

, 2017
Metabolite identification is one of the most challenging steps in metabolomics studies and reflects one of the greatest bottlenecks in the entire workflow.
Armitage, Emily Grace, Barbas, Coral, Gil de la Fuente, Alberto, Godzien, Joanna, Otero, Abraham   +4 more
core   +1 more source

Evaluating TCE Degradation in a ZVI- PRB Using Compound Specific Isotope Analysis

Revista Águas Subterrâneas, 2011
A pilot-scale zero-valent iron (ZVI) Permeable Reactive Barrier (PRB) was installed at an industrial facility to treat a chlorinated Volatile Organic Compound (VOC) plume.
Paulo Lojkasek-Lima, Ramon Aravena, Orfan Shouakar-Stash, Shaun K. Frape, Massimo Marchesi, Stephanie Fiorenza, John Vogan   +6 more
doaj  

Compound-Specific Chlorine Isotope Analysis of Organochlorine Pesticides by Gas Chromatography-Negative Chemical Ionization Mass Spectrometry

Journal of Analytical Methods in Chemistry, 2021
Compound-specific stable chlorine isotope analysis (CSIA-Cl) is an important method for identifying sources of organochlorine contaminants and helping assess their quantification of transformation processes.
Jing Zhang, Shenghua Liu, Jianye Gui, Xiaoya Li, Guochen Qi   +4 more
doaj   +1 more source

Vitamin B12 as a source of variability in isotope effects for chloroform biotransformation by Dehalobacter

MicrobiologyOpen
Carbon and chlorine isotope effects for biotransformation of chloroform by different microbes show significant variability. Reductive dehalogenases (RDase) enzymes contain different cobamides, affecting substrate preferences, growth yields, and ...
Elizabeth Phillips, Katherine Picott, Steffen Kümmel, Olivia Bulka, Elizabeth Edwards, Po‐Hsiang Wang, Matthias Gehre, Ivonne Nijenhuis, Barbara S. Lollar   +8 more
doaj   +1 more source

Embracing variability in amino acid δ15N fractionation: mechanisms, implications, and applications for trophic ecology

Ecosphere, 2016
Compound‐specific stable isotope analysis (CSIA) of individual amino acids (AAs) has become a powerful analytical tool in trophic ecology. Heavily fractionating “trophic” AAs (e.g., glutamic acid: Glu) provide a robust indicator of trophic transfer ...
Kelton W. McMahon, Matthew D. McCarthy
doaj   +1 more source

Unveiling the metabolic fate of monosaccharides in cell membranes with glycomic and glycoproteomic analyses. [PDF]

, 2019
Cell membrane protein glycosylation is dependent on the metabolic state of the cell as well as exogenous nutrients available. Although the metabolism and interconversion of monosaccharides have been well-studied, their incorporation into cell surface ...
Cheng, Zhi, Lebrilla, Carlito B, Li, Qiongyu, Park, Dayoung, Wong, Maurice, Xu, Gege   +5 more
core  

Tailored Compound Specific Carbon Isotopes Analysis in Heritage Science

CHIMIA
Radiocarbon dating has long been a cornerstone of archaeological science, offering a reliable method to determine the age of organic materials. Yet when applied to cultural heritage objects, traditional bulk analysis methods often fall short. Our research, supported by an SNSF Ambizione program, seeks to overcome these limitations by shifting the focus
Rumpf, Lionel, Sandström, Edith, Iacconi, Clémence, Sandmeier, Virginie, Hendriks, Laura   +4 more
openaire   +1 more source

Working standards and analytical framework for CSIA: isotopic composition (δ13C, δ15N, and δ34S) of 21 amino acids and 7 nucleobases

Progress in Earth and Planetary Science
We determined the carbon and nitrogen isotope compositions of biologically important 21 amino acids and 7 nucleobases, which are used as working standards. These isotopic compositions were determined using a high-sensitivity elemental analyzer coupled to
Nanako O. Ogawa, Yoshinori Takano, Yu Itahashi, Naoto F. Ishikawa, Naohiko Ohkouchi   +4 more
doaj   +1 more source

The role of carbon for superconductivity in MgC$_{x}$Ni$_{3}$ from specific heat

, 2005
The influence of carbon deficiency on superconductivity of MgCNi$_{3}$ is investigated by specific heat measurements in the normal and superconducting state.
A. Wälte, G. Fuchs, G. Garbarino, H. Rosner, K. Nenkov, K.-H. Müller, L. Schultz, S.-L. Drechsler   +7 more
core   +1 more source