Results 91 to 100 of about 2,046,859 (296)

Biogeochemistry of marine dissolved organic Sulfur : quantification, distribution, molecular composition, and reactivity [PDF]

, 2019
Dissolved organic matter (DOM) is ubiquitous in natural waters and plays a central role in the biogeochemistry of riverine, estuarine and marine environments. The heteroatomic fraction of DOM consists mainly of nitrogen, phosphorous, and sulfur.
Ksionzek, Kerstin
core  

Paleoarchean sulfur cycling: Multiple sulfur isotope constraints from the Barberton Greenstone Belt, South Africa [PDF]

, 2015
Mass-dependent and mass-independent sulfur isotope fractionation archived in volcanic and sedimentary rocks from the Barberton Greenstone Belt (3550-3215. Ma), South Africa, provide constraints for sulfur cycling on the early Earth. Four different sample
Farquhar, J., Beukes, N. J., Beukes, Nicolas J., Strauss, H., Montinaro, Alice, Strauss, Harald, Schwarz-Schampera, Ulrich, Münker, Carsten, Arndt, N. T., Montinaro A., NWO-NSO: Testing the robustness of the sulfur stable isotope biomarker and paleoredox indicator for planetary exploration, Mason, Paul R D, Petrology, Mason, P. R. D., Roerdink, Desiree, Peters, Marc, Gutzmer, J., Gutzmer, Jens, Farquhar, James, Schwarz-Schampera, U., Roerdink, D., Peters, M., Arndt, Nicholas T., Munker, C.   +23 more
core   +2 more sources

Additively Manufactured Geometry‐Reconfigurable Soft Neural Probes With Monolithic Multifunctionality

Advanced Functional Materials, EarlyView.
A geometry‐reconfigured additive manufacturing strategy converts planar printed soft materials into soft compact neural probes with integrated hydrogel electrodes and microfluidic channels. The resulting NeuroMAP platform enables scalable multichannel recording, localized chemical delivery, stable in vivo electrophysiological recording, and reduced ...
Hyunjin Lee, Xinyi Wang, Sirui Li, Jihyang Park, Hyunseok Lee, Jianting Yao, Kedar Narayan, Yuqi Wang, Jiashu Ren, Yueqi Deng, Salahuddin Ahmed, Denver I. Greenawalt, Archana Pandiyan, Loganathan Veeramuthu, Chi‐Ching Kuo, Tao Zhou   +15 more
wiley   +1 more source

Bacteriostatic Acitivity of Organic Sulfur Compounds

Journal of the agricultural chemical society of Japan, 1953
以上の結果を考察して見ると,P. S. A.は低濃度に於てはE. coliのlag timeを増大するものである. CAVALLITO等の説の如くP. S. A.はP. A. B. A.により拮抗されず,又disulfideによつても拮抗されない. P. S. A.はcysteineにより完全にその作用を阻止される.即ちP. S. A. 1 moleに対しcysteine 1 moleを加えた場合にはcysteineの作用は見るべきものがないが, cysteine 2 molesを加えた場合には完全にその作用は中絶され以後normalな増殖を行う. CAVALLITO等によればP. S. A.とcysteineとの反応には次に示す如く2法が考えられる.
openaire   +2 more sources

Stabilization of Strongly Reduced Fe(I) Single Atom Species Coordinated in a 2D Self‐Assembled Metal–Organic Network

Advanced Functional Materials, EarlyView.
A graphene‐supported 2D metal–organic network stabilizes highly reactive Fe(I)‐N4 single sites through Co‐induced charge redistribution. Combined experiments and theory reveal Fe(I) formation, oxygen‐driven oxidation, and O2 activation mechanisms, offering a strategy to access low‐valent iron centers relevant to catalytic and biological processes ...
Alessandro Namar, Basant Roondhe, Michela De Col, Stefania Baronio, Matteo Jugovac, Mattia Scardamaglia, Eleanor Frampton, Nikolay Vinogradov, Paolo Giannozzi, Erik Vesselli   +9 more
wiley   +1 more source

Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 Ryugu. [PDF]

Nat Commun, 2023
Yoshimura T, Takano Y, Naraoka H, Koga T, Araoka D, Ogawa NO, Schmitt-Kopplin P, Hertkorn N, Oba Y, Dworkin JP, Aponte JC, Yoshikawa T, Tanaka S, Ohkouchi N, Hashiguchi M, McLain H, Parker ET, Sakai S, Yamaguchi M, Suzuki T, Yokoyama T, Yurimoto H, Nakamura T, Noguchi T, Okazaki R, Yabuta H, Sakamoto K, Yada T, Nishimura M, Nakato A, Miyazaki A, Yogata K, Abe M, Okada T, Usui T, Yoshikawa M, Saiki T, Tanaka S, Terui F, Nakazawa S, Watanabe SI, Tsuda Y, Tachibana S, Hayabusa2-initial-analysis SOM team.   +43 more
europepmc   +1 more source

Optical Detection of Cellular Signals at Material Interfaces

Advanced Healthcare Materials, EarlyView.
Emerging functional materials are transforming optical detection of cellular signals. This review highlights optical techniques that exploit the unique optical properties of diverse materials to detect and quantify cellular electrical, chemical, and mechanical signals, and discusses key opportunities and challenges.
Xuchen Ren, Jitong Ren, Zixin Zhang, Koney Eungkon Kim, Francis L. Hong, Yuecheng Peter Zhou   +5 more
wiley   +1 more source

Microdetermination of sulfur in organic compounds

BUNSEKI KAGAKU, 1959
EDTAは,PC指示薬のもとにBa2+と定量的に結合し安定な錯塩を生成するので,これを有機元素分析に応用し種々の条件を検討の結果,その微量化も可能なことがわかった.そこでEDTAによるキレート滴定法と燃焼法による連続ガス吸収装置を有機化合物中の硫黄の定量に応用し,微量分析の許容誤差でその目的を達し得た.ガス吸収には,蒸留水と過酸化水素の二連吸収方式を用い,さらにジョイント結合による吸収装置を考案して連続操作を可能にし,分析能率をいちじるしく向上させた.本定量を各種の有機化合物に応用した結果,満足すべき精度で定量できた.
ISHIDATE, Morizo, KIMURA, Eisaku
openaire   +2 more sources

Zwitterionic Polymer Coating Enabled Chronic Dopamine Sensing and Electrophysiology Recording in Free‐Moving Mice

Advanced Healthcare Materials, EarlyView.
Application of a zwitterionic poly(sulfobetaine methacrylate) (PSB) coating to microelectrode arrays and Ag/AgCl reference electrodes effectively inhibits biofouling and structural degradation. This strategy successfully enables simultaneous, long‐term electrophysiological recording and dopamine sensing in freely behaving mice, facilitating ...
Bingchen Wu, Cort Thompson, Thomas Deakin, Yan Xu, Colleen A. McClung, Xinyan Tracy Cui   +5 more
wiley   +1 more source

Investigating the Integrated Management of Sulfur Element and Organic Fertilizer on the Yield and Yield Components of Oilseed Flax (Linum usitatissimum) in the Ahvaz Conditions [PDF]

پژوهشهای زراعی ایران
IntroductionFlax (Linum usitatissimum) is an annual plant with a stem height of 30 to 50 centimeters. Unlike fiber flax, oil flax has a stem with several branches. Oil flax seeds contain 22% protein, 6.5% crude fiber and 30 to 40% oil.
L Naserimagham, E Fateh, A Aynehband
doaj   +1 more source