Insights into the Allosteric Regulation of Human Hsp90 Revealed by NMR Spectroscopy by Tjaša Goričan, Simona Golič Grdadolnik

“…The main aim of this review article is to discuss how solution NMR techniques, especially protein-based, and the advanced isotope labeling of proteins have been used to investigate the allosteric regulation of the cytosolic isoforms of human Hsp90 with allosteric modulators. …”
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Current prevalence of Helicobacter pylori infection in patients with dyspepsia treated in Warsaw, Poland by Tadeusz Tacikowski, Sa’eed Bawa, Danuta Gajewska, Joanna Myszkowska-Ryciak, Jacek Bujko, Grażyna Rydzewska

“…They were tested for Hp infection with a urea breath test that uses 13C-enriched urea and isotope ratio mass spectrometry. Results : Hp infection was found in 53 patients (44 women and 9 men), i.e. in 35.8% of the whole study group. …”
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Monitoring of radionuclides in carbon steel blooms produced by EAF process by Sofilić T., Barišić D., Sofilić U., Živković J.

“…The analysis by g-spectrometry has been applied to determine the presence of natural isotopes 40K, 226Ra, 232Th and 238U as well as of the artificial isotope 60Co, 137Cs and 192Ir and their activity in the produced steel round blooms in the Steel Mill of CMC Sisak d.o.o. …”
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Taurine prevents mitochondrial dysfunction and protects mitochondria from reactive oxygen species and deuterium toxicity by Stephanie Seneff, Anthony M. Kyriakopoulos

“…This can be of crucial impact to either normal or cancer cells that have highly different mitochondrial redox status. Deuterium is an isotope of hydrogen with a neutron as well as a proton, making it about twice as heavy as hydrogen. …”
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Development and application of an LC-MS/MS method for the combined quantification of oxysterols and bile acids by Martin Roumain, Giulio G. Muccioli

“…We here report the development of a sensitive LC-MS/MS method for the combined quantification of 18 oxysterols, 11 unconjugated, 15 conjugated bile acids, and 1 bile acid precursor, using 8 isotope-labeled internal standards, addressing the need for a more comprehensive analysis of these interesting lipid families. …”
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Study of the Impact of Past Extreme Solar Events on the Modern Air Traffic by G. Hubert, S. Aubry

“…Primary cosmic ray spectra deduced from these cosmogenic isotope data indicate that the impact of these extreme SEP events would have been much more significant than any of the ones observed during the modern era. …”
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Geysers Valley CO2 Cycling Geological Engine (Kamchatka, Russia) by A. Kiryukhin, V. Sugrobov, E. Sonnenthal

“…In some cases, water chemistry and isotope data point to local meteoric water influx into the geothermal reservoir and geysers conduits. …”
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The hidden role of heterotrophic bacteria in early carbonate diagenesis by Mónica Sánchez-Román, Viswasanthi Chandra, Sebastian Mulder, Camila Areias, John Reijmer, Volker Vahrenkamp

“…We observed a significant carbon isotope fractionation (average δ13C = 11.3‰) and notable changes in Mg/Ca ratios throughout the experiments. …”
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Machine learning enabled measurements of astrophysical (p,n) reactions with the SECAR recoil separator by P. Tsintari, N. Dimitrakopoulos, R. Garg, K. Hermansen, C. Marshall, F. Montes, G. Perdikakis, H. Schatz, K. Setoodehnia, H. Arora, G. P. A. Berg, R. Bhandari, J. C. Blackmon, C. R. Brune, K. A. Chipps, M. Couder, C. Deibel, A. Hood, M. Horana Gamage, R. Jain, C. Maher, S. Miskovich, J. Pereira, T. Ruland, M. S. Smith, M. Smith, I. Sultana, C. Tinson, A. Tsantiri, A. Villari, L. Wagner, R. G. T. Zegers

“…The SECAR (SEparator for CApture Reactions) recoil separator at FRIB (Facility for Rare Isotope Beams) was originally designed to measure astrophysical reactions that change the mass of a nucleus significantly. …”
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Back flux during anaerobic oxidation of butane supports archaea-mediated alkanogenesis by Song-Can Chen, Sheng Chen, Niculina Musat, Steffen Kümmel, Jiaheng Ji, Marie Braad Lund, Alexis Gilbert, Oliver J. Lechtenfeld, Hans-Hermann Richnow, Florin Musat

“…AOB reversibility supports a biological formation of butane, and generally of higher volatile alkanes, helping to explain the presence of isotopically light alkanes and deeply branching ACR genes in sedimentary basins isolated from gas reservoirs.…”
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High-temperature structural disorders stabilize hydrous aluminosilicates in the mantle transition zone by Baoyun Wang, Jin Liu, Yanyao Zhang, Baisheng Nie, Wei Yang, Jialong Hao, Xing Ding, Yongjun Tian

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Controversial Issues of Hydrocarbon Field Formation and the Role of Geomagnetic Fields by Andrey A. Ponomarev, Marsel A. Kadyrov, Yuri V. Vaganov, Valeria A. Cheymetova, Vadim M. Aleksandrov, Aleksandr V. Morev

“…This is explained by spin magnetic effects (spin catalysis, magnetic isotope properties). We briefly highlight the effect of magnetic fields on chemical reactions involving organic compounds and the use of magnetic fields to enhance oil recovery. …”
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Societal changes in Ancient Greece impacted terrestrial and marine environments by Andreas Koutsodendris, Joseph Maran, Ulrich Kotthoff, Jörg Lippold, Maria Knipping, Oliver Friedrich, Axel Gerdes, Stefanie Kaboth-Bahr, André Bahr, Hartmut Schulz, Dimitris Sakellariou, Jörg Pross

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Short-Term Effects of Tillage Practices on Soil Organic Carbon Turnover Assessed by δ13C Abundance in Particle-Size Fractions of Black Soils from Northeast China by Aizhen Liang, Shenglong Chen, Xiaoping Zhang, Xuewen Chen

“…The combination of isotope trace technique and SOC fractionation allows a better understanding of SOC dynamics. …”
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Abyssal deposit feeders are secondary consumers of detritus and rely on nutrition derived from microbial communities in their guts by Sonia Romero-Romero, Lee C. Miller, Jesse A. Black, Brian N. Popp, Jeffrey C. Drazen

“…We used compound-specific stable isotope ratios of amino acids (CSIA-AA) to estimate the trophic position of three abundant species of deposit feeders collected from the abyssal plain of the Northeast Pacific (Station M; ~ 4000 m depth), and compared it to the trophic position of their gut contents and the surrounding sediments. …”
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The geometry of sea-level change across a mid-Pliocene glacial cycle by M. E. King, J. R. Creveling, J. X. Mitrovica

“…As a case study, we use a series of ice histories together with a suite of viscoelastic Earth models to predict global changes in sea level from the Marine Isotope Stage (MIS) M2 glacial to the MIS KM3 interglacial. …”
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Tracing nitrogen use efficiency of diverse Canadian spring wheat cultivars by Kate A. Congreves, Olivia Otchere, Pierre J. Hucl

“…To do so, we employed the 15N stable isotope technique to trace the flow of fertilizer-N and determine the 15N recovery efficiency (15NRE). …”
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Multiphase Calcite Cementation and Fluids Evolution of a Deeply Buried Carbonate Reservoir in the Upper Ordovician Lianglitag Formation, Tahe Oilfield, Tarim Basin, NW China by Jiaqing Liu, Zhong Li, Lijuan Cheng, Jiawei Li

“…This study documents the origin of diagenetic fluids by using a combination of petrology, SIMS, fluid inclusion, and radiogenic isotope analysis. Six stages of calcite cements were revealed. …”
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Reduced contribution of sulfur to the mass extinction associated with the Chicxulub impact event by Katerina Rodiouchkina, Steven Goderis, Cem Berk Senel, Pim Kaskes, Özgür Karatekin, Michael Ernst Böttcher, Ilia Rodushkin, Johan Vellekoop, Philippe Claeys, Frank Vanhaecke

“…Here we empirically estimate the amount of impact-released S relying on the concentration of S and its isotopic composition within the impact structure and a set of terrestrial K-Pg boundary ejecta sites. …”
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Hydrogeochemical Characteristics and Genesis of the Chazi Geothermal Field Area in Tibet by Mingzhong Song, Xujuan Lang, Zhennan Zhong, Fengxin Kang, Dawa Nan, Haoting Li, Haowen Yu, Shaoyun Liu, Sihang Han, Zhao Liu

“…By studying the water chemistry and isotope characteristics of geochemical fluids in the study area, information on water chemistry, heat storage temperature, recharge source, recharge elevation, and circulation depth was obtained. …”
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