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Lu–Hf constraints on pre-,syn,and post-collision associations of the Gurupi Belt,Brazil:Insights on the Rhyacian crustal evolution

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Geoscience Frontiers 2022年第5期13卷 336-349页

作者： Evandro L.klein Joseneusa B.Rodrigues Geological Survey of Brazil SBNQuadra 02Bloco HEd.Central Brasília1andarAsa NorteBrasília-DF CEP:70040-904Brazil GPGE–Grupo de Pesquisa em Geologia Econômica(Economic Geology Research Group) PPGG–Programa de Pós-Graduação em Geologia e GeoquímicaUniversidade Federal do ParáBelém-PABrazil

The Gurupi Belt(together with the São Luís cratonic fragment),in north-northeastern Brazil,has been described in previous studies that used extensive field geology,structural analysis,airborne geophysics,zircon U–Pb dating,and whole-rock Sm–Nd isotope and geochemical data as a polyphase orogenic belt,with the Rhyacian being the main period of crust *** was related to a 2240 Ma to 2140 Ma accretionary processes that produced juvenile crust,which has subsequently been reworked during a collisional event at 2100±20 Ma,with little evidence of Archean *** this study,we use Lu–Hf isotopic data in zircon from granitoids(including gneiss)of variable magmatic series,and amphibolite to improve the knowledge of this scenario,and investigate additional evidence of recycling of Archean ***-collisional high Ba-Sr and ferroan granitoids and amphibolite formed in island arc(2180–2145 Ma),show only zircons with suprachondriticεHf values(ca.+1 to+8)indicating the large predominance of juvenile *** 10%of the data show slightly negativeεHf values(0 to-4),which have been observed in granodiorite-gneiss formed in continental arc(2170–2140 Ma),and in strongly peraluminous collisional granites(2125–2070 Ma),indicating the rework of older Paleoproterozoic to Archean components(Hf_(TDM)=2.11–3.69 Ga).A two-component mixing model using both Hf and published Nd isotope data are in line with this interpretation and indicate more than 90%of juvenile material,and less influence of Archean *** with other Rhyacian terranes that are interpreted to have been close to Gurupi in a pre-Columbia configuration(ca.2.0 Ga),our results differ from those of SEGuiana Shield,which show strong influence of Archean protoliths,and are very similar to those of the central-eastern portion of the Baoulé-Mossi Domain of the West African Craton,which has also been formed largely by juvenile magmas in an accretionary-collisional orogen.

关键词： Paleoproterozoic Accretion Collision Isotope geology Lu–Hf isotopes Rhyacian

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Impact of past mining on public safety:seismicity in area of flooded abandoned coal Gardanne mine,France

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International Journal of Coal Science & Technology 2022年第6期9卷 101-111页

作者： Dalija Namjesnik Jannes Kinscher Isabelle Contrucci Emmanuelle klein Institut National de l'Environnement Industriel et Des Risques Direction Sites Et TerritoiresNancyFrance

This paper focuses on the impact of past mining on public *** emphasizes the need to understand the induced seismic hazard and consequently improve the post-mining management procedures and legislations,as many mining sites are located in proximity to populated *** to many challenges and complexity of the post-mining environments,induced seismic hazard nowadays remains largely ***,the return experience of several post-mining sites in recent decades have shown us that the mine flooding and/or degradation of mining works can lead to the stress perturbations,inducing the seismicity and the reactivation of the surrounding geological ***,it is important to advance the seismic monitor-ing and research of seismicity in flooded post-mining *** the number of mine closures worldwide is rising,it can be expected that flooding induced reactivation of the surrounding faults becomes a more often observed *** present in this paper the experience of the abandoned flooded coal mine of Gardanne in France,which has been experiencing post-mining seismicity problems since its closure in *** show the results of a recent study of seismic multiplets and clustering of seismic events,as well as their spatio-temporal activity compared to meteorological *** results provide us new insights as well as lead to raising new questions on seismic sources and triggering mechanisms.

关键词： Post-mining seismicity Seismic origin Seismic hazard Multiplets Clusters

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Vitamin C and Vitamin D—friends or foes in modulating γδ T-cell differentiation?

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Cellular & Molecular Immunology 2022年第10期19卷 1198-1200页

作者： Christian Peters Katharina klein Dieter Kabelitz Institute of Immunology Christian-Albrechts UniversityKielGermany

The differentiation and functional plasticity of T cells are transcriptionally and epigenetically regulated by signals imposed by the local cytokine milieu and a variety of additional factors,including *** C has pleiotropic functions in the immune *** exerts antioxidant activity,can directly kill selected tumor targets,promotes early T-cell differentiation,and enhances Th1 cytokine production in mature T cells[1,2].

关键词： vitamin cytokine Vitamin

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Mechanisms of electrochemical magnesium(de)alloying of Mg-Sn and Mg-Pb polymorphs

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Journal of Magnesium and Alloys 2022年第6期10卷 1609-1616页

作者： Clément Pechberty Antoine klein Bernard Fraisse Lorenzo Stievano Romain Berthelot ICGM CNRSUniv.MontpellierENSCMMontpellierFrance RS2E CNRSHub de l’EnergieAmiensFrance

Different polymorphs of Mg-Sn and Mg-Pb intermetallic compounds were prepared by high-energy mechanical alloying and then investigated as active material in magnesium batteries. Beside thermodynamically stable Mg_(2)Sn and Mg_(2)Pb crystallizing in the anti-fluorite structure, other polymorphs Mg_(~2)Sn and Mg_(~2)Pb were prepared by increasing the ball-milling time. The first dealloying process is almost complete only for the cubic polymorphs, then similar capacities are observed during the subsequent alloying and dealloying *** to operando X-ray diffraction, the electrochemical mechanism is revealed and shows that the cubic polymorphs Mg_(2)Sn and Mg_(2)Pb tend to preferentially form during the alloying whatever the pristine intermetallic. Weak traces of Mg_(~2)Sn and Mg_(~2)Pb are observed during the alloying, suggesting that these polymorphs act as a by-product and/or an intermediate phases of the electrochemical process. Finally, the compatibility of cubic Mg_(2)Sn and Mg_(2)Pb with Mg(TFSI)_(2)-based electrolyte is confirmed in full cell vs. a positive electrode based on the Chevrel phase Mo6S8, although limited performance is achieved. This fundamental work provides new insights in the behavior of alloy-type negative electrodes for magnesium-ion batteries.

关键词： Magnesium batteries Alloy electrode Mechanochemistry Operando X-ray diffraction

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Hydration Lubrication in Biomedical Applications:From Cartilage to Hydrogels

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Accounts of Materials Research 2022年第2期3卷 213-223页

作者： Weifeng Lin Jacob klein Department of Molecular Chemistry and Materials Science Weizmann Institute of ScienceRehovot 76100Israel

CONSPECTUS:In the course of evolution,nature has achieved remarkably lubricated surfaces,with healthy articular cartilage in the major(synovial)joints being the prime example,that can last a lifetime as they slide past each other with ultralow friction(friction coefficientμ=the force to slide surfaces past each other/load compressing the surfaces<0.01)under physiological pressures(up to 10 MPa or more)).Such properties are unmatched by any man-made *** precise mechanism of low friction between such sliding cartilage tissues,which is closely related to osteoarthritis(OA),the most widespread joint disease,affecting hundreds of millions worldwide,has been studied for nearly a century,but is still not fully ***,the roles of load bearing by interstitial fluid within the cartilage bulk and that of thin exuded fluid films at the interface between the sliding cartilage surfaces have been proposed as the main lubrication *** recent work,however,suggests that molecular boundary layers at the surfaces of articular cartilage and other tissues play a major role in their *** particular,in recent years hydration lubrication has emerged as a new paradigm for boundary lubrication in aqueous media based on subnanometer hydration shells which massively reduce frictional *** vectors of hydration lubrication include trapped hydrated ions,hydrated surfactants,biological macromolecules,biomimetic polymers,polyelectrolytes and polyzwitterionic brushes,and close-packed layers of phosphatidylcholine(PC)vesicles,all having in common the exposure of highly hydrated groups at the slip *** them,vesicles(or bilayers)of PC lipids,which are the most widespread lipid class in mammals,are exceptionally efficient lubricating elements as a result of the high hydration of the phosphocholine headgroups they *** lipids are ubiquitous in joints,leading to the proposal that macromolecular surface complexes exposing PC bilayers

关键词： hydration frictional exceptional

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PHiFA—A tool for numerical propagation of high-fidelity astrodynamics

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Astrodynamics 2022年第2期6卷 189-204页

作者： Yang Yang Erik klein Changyong He Han Cai Yan Zhang School of Aeronautics and Astronautics Sun Yat-sen UniversityShenzhen 518000China TU Braunschweig Institut for Space Systems38108 BraunschweigGermany ENSG-Géomatics Institut national de l’information géographique et forestière(IGN)F-77455 Marne-la-ValléeFrance School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China

This paper presents a tool for the numerical propagation of high-fidelity astrodynamics,called *** coupled orbit–attitude dynamics for space objects are modeled by considering various types of perturbative forces and *** methods have been implemented to calculate the surface forces:the area matrix method and the beam *** beam method is more precise as it discretizes the source media(e.g.,sunlight and aerodynamic wind)and the surface of the target into multiple rays and finite elements,respectively,and then accumulates the effect of each *** PHiFA tool was tested and validated using a 3U CubeSat model and the defunct European environment satellite(Envisat)model.

关键词： coupled orbit-attitude dynamics surface force modeling beam method European environment satellite (Envisat)

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Corrigendum to“The new ichnotaxon Eubrontes nobitai *** other saurischian tracks from the Lower Cretaceous of Sichuan Province and a review of Chinese Eubrontes-type tracks”[Journal of Palaeogeography(10)(2021)17]

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Journal of Palaeogeography 2024年第2期13卷 372-372页

作者： Li-Da Xing Martin G. Lockley Hendrik klein Li-Jun Zhang Anthony Romilio W. Scott Persons IV Guang-Zhao Peng Yong Ye Miao-Yan Wang State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Beijing 100083 China School of the Earth Sciences and Resources China University of Geosciences Beijing 100083 China Dinosaur Trackers Research Group University of Colorado Denver Denver 80217 USA Saurierwelt Paläontologisches Museum Alte Richt 7 92318 Neumarkt Germany Institute of Resources and Environment Key Laboratory of Biogenic Traces and Sedimentary Minerals of Henan Province Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region Henan Polytechnic University Jiaozuo 454003 Henan Province China School of Biological Sciences The University of Queensland Brisbane Queensland 4072 Australia Mace Brown Museum of Natural History Department of Geology and Environmental Geosciences College of Charleston Charleston 29401 USA Zigong Dinosaur Museum Zigong 643013 Sichuan Province China

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The Use of Secondary Grape Biomass in Beef Cattle Nutrition on Carcass Characteristics, Quality and Shelf Life of Meat

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Food and Nutrition Sciences 2024年第6期15卷 447-469页

作者： Vitor L. Molosse Guilherme L. Deolindo Rafael V. P. Lago Bruna klein Claiton A. Zotti Marcelo Vedovato Marcylene V. da Silveira Priscila M. Copetti Maria R. C. Schetinger Juscivete F. Favero Eliana L. Fiorentin Aleksandro S. da Silva Universidade do Estado de Santa Catarina (UDESC) Chapec Brazil Department of Animal Science UDESC Chapec Brazil Department of Animal Science Universidade do Oeste de Santa Catarina Xanxere Brazil Dean Lee Research and Extension Center Louisiana State University Alexandria LA USA Department of Biochemistry Universidade Federal de Santa Maria Santa Maria Brazil Department of Medicina Veterinria UNOCHAPEC Chapec Brasil

We determined whether the inclusion of 100 g/kg dry matter of grape pomace silage (GPS) and grape pomace bran (GPB) as substitutes for other traditional fiber sources in the diet of steers (Charolais x Nellore) would improve carcass characteristics, meat quality and composition, and shelf life. Twenty-four animals (248 ± 19.32 kg of initial body weight) were fed a high concentrate diet for 121 days. Carcass characteristics were measured, and the longissimus dorsi muscle was analyzed for fatty acid (FA) profile and composition. The meat was sliced and stored in air-permeable packages for 10 days. On each sampling day (d 1, 3, 7, and 10), oxidative stability, bacterial load, lipid and protein oxidation, and staining were analyzed. The experimental diets influenced the pH of cold carcasses only. The GPS group had a higher pH than the control. The GPS and GPB groups showed improved oxidant status (i.e., lower lipid peroxidation and concentrations of reactive oxygen species were in the meat of both groups than in control). On the first day of storage, the antioxidant enzyme glutathione S-transferase activity was more significant in the meat of the GPS and GPB groups than in the control. The bacterial loads in the meat were attenuated by GPS inclusion;there were lower total coliform counts and a trend toward lower counts for enterobacteria in the control group. The diets altered the FA profile of the meat;i.e., the GPB diet allowed for a more significant amount of the n-6 omegas in the meat, while the GPS diet showed a tendency for a more significant amount of n-6 and 9 omegas. Both diets (GPS and GPB) increased the amounts of long-chain FAs. The GPS diet decreased saturated FA levels. We conclude that the dietary treatments GPS and GPB are a promising alternative to maintain meat quality standards throughout in real-world retail conditions. These treatments gave rise to an improvement in the nutritional value of the meat due to the more significant amounts of FAs that im

关键词： Animal Nutrition Antioxidant Biomass Grape Meat Quality Microbiology Residue

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ezQTL:A Web Platform for Interactive Visualization and Colocalization of QTLs and GWAS Loci

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Genomics, Proteomics & Bioinformatics 2022年第3期20卷 541-548页

作者： Tongwu Zhang Alyssa klein Jian Sang Jiyeon Choi Kevin M.Brown Division of Cancer Epidemiology and Genetics National Cancer InstituteBethesdaMD 20892USA

Genome-wide association studies(GWAS)have identified thousands of genomic loci associated with complex diseases and traits,including *** vast majority of common traitassociated variants identified via GWAS fall in non-coding regions of the genome,posing a challenge in elucidating the causal variants,genes,and mechanisms *** quantitative trait locus(eQTL)and other molecular QTL studies have been valuable resources in identifying candidate causal genes from GWAS loci through statistical colocalization *** QTL colocalization is becoming a standard analysis in post-GWAS investigation,an easy web tool for users to perform formal colocalization analyses with either user-provided or public GWAS and eQTL datasets has been ***,we present ezQTL,a web-based bioinformatic application to interactively visualize and analyze genetic association data such as GWAS loci and molecular QTLs under different linkage disequilibrium(LD)patterns(1000 Genomes Project,UK Biobank,or user-provided data).This application allows users to perform data quality control for variants matched between different datasets,LD visualization,and two-trait colocalization analyses using two state-of-the-art methodologies(eCAVIAR and HyPrColoc),including batch *** is a free and publicly available cross-platform web tool,which can be accessed online at https://***/ezqtl.

关键词： Genome-wide association study Expression quantitative trait locus Colocalization Linkage disequilibrium Visualization

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An innovative technique of chest wall stabilization and reconstruction in traumatic flail chest:The figure-of-eight suture with polypropylene mesh and musculofascial flap

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Chinese Journal of Traumatology 2022年第2期25卷 122-124页

作者： klein Dantis Swagata Brahmachari Aghosh Raju Suprabha Shankari Department of Cardiothoracic and Vascular Surgery All India Institute of Medical SciencesRaipurIndia Department of General Surgery All India Institute of Medical SciencesBhopalIndia

Surgical stabilization of the flail chest is challenging and has no established *** wall integrity and stability are the main factors that ensure the protection of intrathoracic organs and an adequate respiratory ***,we report a novel chest wall reconstruction technique in a 45-year-old man with a traumatic left flail chest and open pneumothorax diagnosed both clinically and *** approximation and chest wall reconstruction was done using intercostal figure-of-eight suture and polypropylene mesh with vascularized musculofascial *** patient improved gradually and was discharged after three weeks of total hospital *** returned to regular working after a month with no evidence of respiratory distress or paradoxical chest ***-up visit at one year revealed no lung hernia or paradoxical chest *** is a novel,feasible and cost-effective modification of chest wall reconstruction that can be adopted for thoracic wall repair in case of open flail chest,which needs emergency surgical interventions even in resource constraint settings.

关键词： Flail chest Open pneumothorax Polypropylene mesh Figure-of-eight suture Chest wall reconstruction

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