Results 91 to 100 of about 68,774 (280)

Large sulfur isotope fractionations in Martian sediments at Gale crater [PDF]

, 2017
Variability in the sulfur isotopic composition in sediments can reflect atmospheric, geologic and biological processes. Evidence for ancient fluvio-lacustrine environments at Gale crater on Mars and a lack of efficient crustal recycling mechanisms on the
AS Yen, C Freissinet, CK Shearer, DL Eldridge, DT Vaniman, F-Y Leung, GR Osinski, H Ohmoto, HB Franz, HB Franz, HB Franz, I Halevy, IN Bindeman, J Farquhar, J Farquhar, J Parnell, J Savarino, JP Greenwood, JP Greenwood, JP Greenwood, JP Grotzinger, KA Farley, KM Stack, M Nachon, O Abramov, RRI Seal, S Chakraborty, SA Benner, SP Schwenzer, SP Schwenzer, SS Johnson, T Ding   +31 more
core   +1 more source

Early Life Relict Feature in Peptide Mass Distribution [PDF]

, 2008
Molecular mass of a biomolecule is characterized in mass spectroscopy by the monoisitopic mass M~mono~ and the average isotopic mass M~av~. We found that peptide masses mapped on a plane made by two parameters derived from M~mono~ and M~av~ form a ...
Alexander R. Zubarev, Corina Mayrhofer, Eva Y. M. Fung, Konstantin Artemenko, Roman A. Zubarev   +4 more
core   +1 more source

Technobiological Pathways for High‐CO₂ Capture Using Micro‐/Macroalgae: Genetic Engineering, Process Automation, and Value‐Added Bioproducts

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Greenhouse gas (GHG) emissions have emerged as one of the most critical drivers of climate change; this is primarily due to high concentrations and long atmospheric life of carbon dioxide (CO2). For a significant amount of time, various biological processes such as microalgal cultivation, cyanobacterial systems, photosynthetic microorganisms ...
Sadhana Semwal, Harish Chandra Joshi
wiley   +1 more source

Geochemical transformations of sulfur and their role in the formation of different types and subtypes of saline lakes in Southeastern Transbaikalia

Applied Water Science
This study focused on the chemistry and isotopes of sulfur in lakes. The bottom sediments and water columns of lakes were found to contain reduced forms of sulfur, including hydrogen sulfide ions, elemental sulfur, and thiosulfate ions, along with ...
S. V. Borzenko, I. A. Fedorov
doaj   +1 more source

Paediatric development of radiopharmaceutical imaging agents and radioligand therapeutics

British Journal of Clinical Pharmacology, EarlyView.
Abstract This review focuses on the development of radiopharmaceutical imaging agents and radioligand therapeutics for paediatric use. Nuclear medicine plays an important role in the diagnosis and treatment of various childhood conditions, including cancers, infections and brain disorders.
Justin L. Hay, Amandine Manon, Hunter Stephens, S. Y. Amy Cheung, Bart de Keizer, Erik T. te Beek   +5 more
wiley   +1 more source

Off limits: sulfate below the sulfate-methane transition

Frontiers in Earth Science, 2016
One of the most intriguing recent discoveries in biogeochemistry is the ubiquity of cryptic sulfur cycling. From subglacial lakes to marine oxygen minimum zones, and in marine sediments, cryptic sulfur cycling – the simultaneous sulfate consumption and ...
Benjamin Brunner, Gail Lee Arnold, Hans Røy, Inigo A Müller, Bo Barker Jørgensen   +4 more
doaj   +1 more source

Functionalizing Conductive Diamond: Recent Advance in Fabrication, Modifications, and Applications

Carbon Energy, EarlyView.
This review highlights recent advancements in the synthesis, modification, and electrochemical applications of conductive diamond, particularly boron‐doped diamond (BDD). It emphasizes progress in fabrication methods, including CVD and HPHT, and explores modifications such as doping, surface terminations, and composite design, enabling significant ...
Ning Linghu, Xin Jiang, Jing Xu
wiley   +1 more source

Sulfur Isotope of Epilithic Mosses to Trace Variation of Atmospheric Sulfur Sources

Journal of Isotopes, 2016
全文: PDF (5099 KB) HTML (1 KB) 输出: BibTeX | EndNote (RIS) 摘要 为探讨石生苔藓硫同位素组成特征对区域性大气硫源的指示作用，连续两年采集鄱阳湖生态经济区内的石生苔藓样品，测定δ34S值；并结合已有的雨水、煤的硫同位素值等相关研究数据进行对比分析。样品δ34S值均偏正，平均为+4.9‰，取值范围为+1.9‰~+9.6‰；石生苔藓δ34S值与空气中SO2浓度呈负相关关系；南昌 ...
HU Fei-fei1,2;PAN Jia-yong1,3;ZHANG Liang1,2;XIE Shu-rong3;CHEN Yi-ping3;XIA Fei1,3
doaj   +1 more source

Exploring the contributions of liquid-phase sulfur chemistry to the mass-independent sulfur fractionation of the Archean rock record [PDF]

, 2010
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p.
Kopf, Sebastian Hermann
core  

Superconductivity above the lowest Earth temperature in pressurized sulfur hydride

, 2015
A recent experiment has shown a macroscopic quantum coherent condensate at 203 K, about 19 degrees above the coldest temperature recorded on the Earth, 184 K, in pressurized sulfur hydride.
Bianconi, Antonio, Jarlborg, Thomas
core   +2 more sources