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unmixing detrital zircon u-Pb ages reveals tectonic and climatic depositional influences on the Carboniferous Ansilta Formation,Calingasta-uspallata Basin,Western Argentina

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Geoscience Frontiers 2024年第4期15卷 61-77页

作者： J.R.Malone J.E.Malone J.l.Isbell D.H.Malone J.P.Craddock K.N.Pauls Department of Geological Sciences Jackson School of GeosciencesUniversity of Texas at AustinAustinTX 78712USA Iowa Geological Survey University of IowaIowa CityIA 52240USA Department of Geosciences University of Wisconsin-MilwaukeeMilwaukeeWI 53211USA Department of Geography Geology and the EnvironmentIllinois State UniversityNormalIL 61790-4400USA

The late Paleozoic Ice Age(lPIA)was a principal control of sedimentation across Gondwana from the late Devonian through early *** assess the hypothesis that glacial to interglacial transitions in western Argentina were the primary control influencing sediment routing patterns among the various Carboniferous-Permian basins in western *** Carboniferous Ansilta Formation consists of glaciomarine,nearshore,and fluvial systems deposited during the lPIA along the eastern margin of the Calingasta-uspallata Basin in *** lower,glacially influenced succession of the Ansilta Formation records at least five glacial advances;the upper succession of consists of progradational shallow marine,deltaic,and fluvial *** combine 1225 new u-Pb zircon ages from six samples of the Carboniferous Ansilta Formation in the Calingasta-uspallata Basin with 5864 u-Pb ages from 147 pub-lished samples in the detrital Pymix forward mixture model to characterize provenance *** the glacially influenced lower Ansilta Formation,sediment was derived locally from the Protoprecordillera,which was a prominent highland with alpine glaciers flowing west and east into the Calingasta-uspallata and Paganzo basins,***,there was little or no connection between these two basins during Serpukhovian-Bashkirian *** fluvial/deltaic upper Ansilta had distal sediment sources in the Sierras ***,our results support the collapse of the Protoprecordillera topographic barrier,enabling drainage patterns connecting the Paganzo and Calingasta-uspallata basins by late Pennsylvanian-early Permian time.

关键词： late Paleozoic Ice Age Argentina Calingasta-uspallata Basin Ansilta Formation Detrital zircon provenance

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Characterization and Three-dimensional Structural Modeling of Humic Acid via Molecular Mechanics and Molecular Dynamic Simulation

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Chemical Research in Chinese universities 2013年第6期29卷 1180-1184页

作者： ZHAO Nan l.u) Yi-zhong lI Guang-jun College of Resources and Environmental Sciences China Agricultural University Beijing 100193 P.R.China School of Chemistry and Environment Beijing University of Aeronautics and AstronauticsBeijing 100191 P.R.China

The humic acid（HA） sample obtained from the al.uvial soil was characterized by elemental composition, pyrolysis gas chromatography-mass spectrometry（Py-GC-MS） and solid-state 13C nuclear magnetic resonance （13C NMR） spectroscopy. There is high fat content and a few nitrogen-containing functional groups in HA. Py-GC-MS demonstrates the characterization and structural identification of HA. One long list of identified pyrolysis products was proposed for the construction of conceptual model of HA. Solid-state 13C NMR data indicate there are higher values of alkyl-C, O-alkyl-C and aryl-C in HA. The elemental composition, structural carbon distribution and l3C NMR spectroscopy of simulated HA are consistent with those of experimental HA. HyperChem was used to simulate the three-dimensional molecular structure of the monomer, which was optimized by the molecular mechanics of the optimized potential for liquid simulations（OPlS） force field and molecular dynamics simulation to get the stable and balanced conformation. The deprotonation process study depicts that the degree of ionization of HA gets deeper, while the electronegativity of HA and the energy of van der Waals（vdW） increase. Moreover, the 3D structure of humic acid with -4 charges is the most stable. The deprotonation process is an endothermic process.

关键词： Al.uvial soil Humic acid Conceptual model Elemental analysis Pyrolysis gas chromatography-mass spectrometry(Py-GC-MS) 13C nuclear magnetic resonance(13C NMR) Molecular simulation Three-dimensional structure Optimized potential for liquid simulatio

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The first record of dermochelyid turtles in the Eocene of Tierra del Fuego:new insights on the evolution of the Weddellian faunas

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Advances in Polar Science 2024年第1期35卷 63-77页

作者： Paula BONA Juliana STERlI Marcelo Saúl de la FuENTE Eduardo OlIVERO Marta S.FERNÁNDEZ Marcelo REGuERO División Paleontología Vertebrados Museo de La Plata-Anexo IIFacultad de Ciencias Naturales y MuseoUniversidad Nacional de La PlataLa Plata B1900FWAArgentina Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET) Ciudad Autónoma de Buenos Aires C1425FQBArgentina Museo Paleontológico Egidio Feruglio Trelew U9100Argentina Instituto de Evolución Ecología Histórica y Ambiente-CONICETSan Rafael CP5600Argentina Centro Austral de Investigaciones Científicas-CONICET Universidad Nacional de Tierra del FuegoUshuaia CP 9410Argentina División Paleontología Vertebrados Museo de La PlataUniversidad Nacional de La PlataLa Plata B1900FWAArgentina

The Antarctic Paleogene marine fossil record has been the key to reconstructing the evolution of the Weddellian Sea and final dismemberment of Southern *** this context,Eocene marine vertebrates from Seymour(Marambio)Island have provided valuable *** present the first Eocene record of marine reptiles from the southern Atlantic Coast of South *** corresponds to several postcranial turtle remains represented by a proximal end of the right humerus,three caudal and one thoracic vertebrae,a fragment of the left pubis,and ten ossicles of the dorsal carapace,coming from the leticia Formation(late-mid Eocene)at Cabo Tiburones,Tierra del Fuego,*** materials show severalfeatures such as the size and general morphology of the humerus and vertebrae,and the presence of relatively small,irregular,smooth,and unkeeled ossicles,which allow us to assign them to Dermochelyidae *** are a cosmopolitan group ofcryptodiran turtles,registered from the late Cretaceous up to the recent,with some physiological-biological peculiarities(e.g.,endothermy and an exclusive jellyfish-based diet)and characterized by the presence of an osseous carapace formed by *** new finding from the leticia Formation is an addition to the scarce and extremely fragmentary record of Eocene dermochelyids from the southern seas like those from the la Meseta and Submeseta formations(Antarctica)and the Waihao and Burnside formations(New Zealand).This new information allows us to discuss the presence of these turtles in such high latitudes in the past and its implication in the evolution of the Weddellian fauna.

关键词： marine reptiles sea turtles Dermochelyidae Paleogene la Meseta Formation Submeseta Formation leticia Formation

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Genes associated with Alzheimer's disease affecting ischemic neurodegeneration of the hippocampal CA3 region

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Neural Regeneration Research 2021年第7期16卷 1392-1393页

作者： Ryszard Pluta Marzena ułamek-Kozioł laboratory of Ischemic and Neurodegenerative Brain Research Mossakowski Medical Research CentrePolish Academy of SciencesWarsawPoland

Neurodegeneration in the brain after ischemia with reperfusion mimicking the neuropathology of Alzheimer's disease:Brain ischemia with reperfusion,which is one of the main causes of morbidity and mortality in the world,triggers various neuropathological changes characteristic for Alzheimer's disease(AD)such as increased blood-brain barrier permeability,excitotoxicity,necrosis,autophagy,mitophagy,apoptosis,neuroinflammation,amyloid plaques,neurofibrillary tangles,cerebral vessel pathology,and brain atrophy that lead to the death of neurons,deteriorating motor,sensory and cognitive functions(Figure 1)(Kato et al.,1988;Wisniewski et al.,1995;Van Groen et al.,2005;Kocki et al.,2015;ułamek-Koziołet al.,2016,2017,2019).Brain ischemia is recognized as a major contributor to the dysfunction of an aging brain and the development of neurodegenerative diseases,including AD(Pluta,2019).

关键词： Alzheimer ischemia cerebral

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Influence of ageing on oil degradation and gassing tendency under high-energy electrical discharge faults for mineral oil and synthetic ester

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High Voltage 2020年第6期5卷 731-738页

作者： l.loiselle u.Mohan Rao I.Fofana Research Chair on the Aging of Power Network Infrastructure(ViAHT) Universitédu QuébecàChicoutimiChicoutimiQCG7H 2B1Canada

In this work, mineral oil and synthetic esters were selected at different ageing factors (based on acidity values). Fresh and aged oils have been subjected to high-energy discharges (repeated 100 breakdowns) to simulate electric faults of highly vulnerable intensity. The intent of this work is to understand the influence of high-energy electric faults on oil degradation and gassing tendency at different ageing conditions. In this study, the influence of the high-energy discharges on degradation and gassing tendency at different ageing factors is reported for mineral oil and synthetic esters. Oil degradation is reported by adopting ultraviolet spectroscopy, turbidity and particle counter as per american society for testing and materials (ASTM) standard test methods. Gassing tendencies and fault gas analysis are understood by dissolved the gas analysis using Duval's triangle and Duval's pentagon methods for mineral and non-mineral oils. It is found that the influence of high-energy discharges on oil degradation is higher in mineral oils to that of the synthetic esters. The intensity of the gassing tendency is higher for ester fluids;however, as per the Duval methods, the faulty conditions are at lower levels as compared to mineral oils.

关键词： synthetic energy high

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Boosting Adaptive Weighted Broad learning System for Multi-label learning

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IEEE/CAA Journal of Automatica Sinica 2024年第11期11卷 2204-2219页

作者： Yuanxin lin Zhiwen Yu Kaixiang Yang Ziwei Fan C.l.Philip Chen the School of Computer Science and Engineering in South China university of Technology IEEE the Pengcheng laboratory

Multi-label classification is a challenging problem that has attracted significant attention from researchers, particularly in the domain of image and text attribute annotation. However, multi-label datasets are prone to serious intra-class and inter-class imbalance problems, which can significantly degrade the classification performance. To address the above issues, we propose the multi-label weighted broad learning system(MlW-BlS) from the perspective of label imbalance weighting and label correlation mining. Further, we propose the multi-label adaptive weighted broad learning system(MlAW-BlS) to adaptively adjust the specific weights and values of labels of MlW-BlS and construct an efficient imbalanced classifier set. Extensive experiments are conducted on various datasets to evaluate the effectiveness of the proposed model, and the results demonstrate its superiority over other advanced approaches.

关键词： Broad learning system label correlation mining label imbalance weighting multi-label imbalance

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The lithosphere Structure and its Implication for Different Metallogenic Belts beneath the Eastern South China Block

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Acta Geologica Sinica(English Edition) 2024年第S1期 2-5页

作者： CHEN Changxin lü Qingtian CHEN ling SHI Danian YAN Jiayong AI Yinshuang Chinese Academy of Geological Sciences SinoProbe Center Chinese Academy of Geological Sciences and China Geological Survey China MNR lab of Deep Earth Science and Technology State Key laboratory of lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences CAS Center for Excellence in Deep Earth Science university of Chinese Academy of Sciences Key laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences

The South China Block(SCB) was formed through the Neoproterozoic amalgamation of the Yangtze Block(YB), the Cathaysia Block(CB), and the accreted components of the Jiangnan orogenic belt(JNO), it is bounded by the Jiangshan–Shaoxing–Pingxiang fault(JSPF) and the Jiujiang–Shitai–Jishou fault(JSJF)(Yao et al., 2019). The SCB has undergone a series of complex geological events, including Paleozoic orogeny, Mesozoic collisions with the North China Craton(NCC) and the Indochina Block, as well as the intracontinental orogeny, leading to extensive lithospheric modifications and magmatic activities(Zhang H J et al., 2023; Fig. 1).

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Inquiries and Confession before the Cross： An Interpretation of Wang Guilin＇s My Jerusalem

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Frontiers of literary Studies in China-Selected Publications from Chinese universities 2015年第2期9卷 318-336页

作者： l.u Yan Institute for Trans-cul.ural Studies Beijing Intemational Studies University Beijing 100024China

This essay employs the approach of New Criticism close reading to interpret My Jerusalem by a contemporary Chinese poet, Wang Guilin, from the dialogic perspective of＂I and Thou.＂ From a dimension of faith beyond daily life, the poet narrates his astonishment, historical reflection and spiritual transformation during a visit to Jerusalem. For him, the journey to Jerusalem was also a pilgrimage to a spiritual homeland, self-achievement, and peace and love.

关键词： Jerusalem Bible I and Thou the Cross

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Recent advances in the understanding and management of chronic pancreatitis pain

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Journal of Pancreatology 2024年第1期7卷 35-44页

作者： Jessica Walker Olivia l.Babyok Jami l.Saloman Anna Evans Phillips Department of Internal Medicine University of Pittsburgh Medical CenterPittsburghPAUnited States Division of Gastroenterology Hepatology and NutritionDepartment of MedicineSchool of MedicineUniversity of PittsburghPittsburghPAUnited States Center for Pain Research Center for NeuroscienceSchool of MedicineUniversity of PittsburghPittsburghPAUnited States

Abdominal pain is the most common symptom of chronic pancreatitis(CP)and is often debilitating for patients and very difficult to *** date,there exists no cure for the *** strategies focus on symptom management and on mitigation of disease progression by reducing toxin exposure and avoiding recurrent inflammatory *** treatment protocols start with medical management followed by consideration of procedural or surgical intervention on selected patients with severe and persistent *** incorporation of adjuvant therapies to treat comorbidities including psychiatric disorders,exocrine pancreatic insufficiency,mineral bone disease,frailty,and mal.utrition,are in its early *** clinical studies and animal models have been designed to improve investigation into the pathophysiology of CP pain,as well as to improve pain *** the array of tools available,many therapeutic options for the management of CP pain provide incomplete *** still remains much to discover about the neural regulation of pancreas-related *** this review,we will discuss research from the last 5 years that has provided new insights into novel methods of pain phenotyping and the pathophysiology of CP *** discoveries have led to improvements in patient selection for optimization of outcomes for both medical and procedural management,and identification of potential future therapies.

关键词： Central sensitization Chronic pancreatitis Pain phenotyping Peripheral sensitization

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Plastic deformation of a Zr-based bulk metallic glass fabricated by selective laser melting

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Journal of Materials Science & Technology 2021年第1期60卷 139-146页

作者： l.Deng K.Kosiba R.limbach l.Wondraczek u.Kühn S.Pauly IFW Dresden Institute for Complex MaterialsHelmholtzstraße 20D-01069DresdenGermany Otto Schott Institute of Materials Research University of JenaFraunhoferstraße 6D-07743JenaGermany university of Applied Sciences Aschaffenburg Würzburger Straße 45D-63743AschaffenburgGermany

Fully amorphous Zr_(52.5)Cu_(17.9)Ni_(14.6)Al_(10)Ti_(5) bulk metallic glass(BMG) samples with a relative density exceeding 98% were fabricated via selective laser melting(SlM).High fracture stresses of around1700 MPa and a reproducible plastic strain of about 0.5% were obtained for cylindrical SlM *** analysis of the observed serrations during compressive loading implies that the shear-band dynamics in the additively manufactured samples distinctly differ from those of the as-cast *** phenomenon appears to originate from the presence of uniformly dispersed spherical pores as well as from the more pronounced heterogeneity of the glass itself as revealed by instrumented *** these heterogeneities,the shear bands are straight and form in the plane of maximum shear *** manufacturing,hence,might not only allow for producing large BMG samples with complex geometries but also for manipulating their deformation behaviour through tailoring porosity and structural heterogeneity.

关键词： Powder bed fusion Selective laser melting Bulk metallic glass Serrated flow Heterogeneity

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