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Evaluating the hydrocarbon generation potential of the Paleocene–Eocene carbonaceous rocks in the Barmer and Bikaner-Nagaur Basins, western Rajasthan, India

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China Geology 2025年第1期8卷 77-91页

作者： Alok kumar khairul Azlan Mustapha Alok k.Singh Mohammed Hail Hakimi Ali y.kahal Waqas Naseem Hijaz kamal Hasnan Department of Geology Faculty of ScienceUniversiti MalayaKuala Lumpur 50603Malaysia Department of Geology Institute of ScienceBanaras Hindu UniversityVaranasi 221005India Department of Petroleum Engineering and GeoEngineering Rajiv Gandhi Institute of Petroleum TechnologyJais 229304India Institute of Geology and Petroleum Technologies Kazan Federal UniversityKazan 420008Russia Geology and Geophysics Department King Saud UniversityRiyadh 11451Saudi Arabia Department of Geology University of PoonchRawalakot 12350Pakistan

The Bikaner-Nagaur and Barmer Basins(Rajasthan)are the most important petroliferous sedimentary basins in *** over a decade,the exploration and extraction of hydrocarbons in these ***-Eocene age rocks bear organic-rich sediments in these basins,including lignite and carbonaceous shale *** present research investigates the source rock properties,petroleum potential and thermal maturity of the carbonaceous shale partings from the lignite mines of Gurha(Bikaner-Nagaur Basin)and kapurdi(Barmer Basin)using petrographical and geochemical *** carbonaceous shales have high organic matter(OM),with considerable total organic carbon(TOC)contents ranging from 13%to 39%.Furthermore,they contain hydrogen-rich kerogen,including types II and II/III,as evidenced by the Rock-Eval and elemental analysis *** existence of these kerogen types indicates the abundance of reactive(vitrinite and liptinite)***,the carbonaceous shales from the Bikaner–Nagaur Basin have oil generation potentials,with a high hydrogen index(up to 516 mg HC/g TOC)and a H/C ratio(up to 1.5)along with a significant presence of oil-prone liptinitic *** from the geochemical and petrological results,the studied shales have low huminite reflectance(0.31%–0.48%),maximum temperature(S_(2) peak;Tmax)between 419℃ and 429℃,and low production index values(PI:0.01–0.03).These results indicate that these carbonaceous shales contain immature OM,and thereby,they cannot yet release commercial amount of *** immaturity level in the studied outcrop section is due to the shallow burial *** proxies further indicate the presence of both oil and gas-prone source rocks.

关键词： Carbonaceous shale Petroliferous Bikaner-Nagaur Basin Barmer Basin High hydrogen index Hydrogen-rich kerogen Western Rajasthan Geochemistry Petrology

[Analysis of coexisting and associated factors of intracerebral hemorrhage lesions in patients with recent subcortical small infarct]

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Zhonghua yi xue za zhi 2025年第7期105卷 529-536页

作者： Z R Wu C Zong k Zhang H B Liu y y Zhao y H Wang y Gao y M Xu Department of Neurology the First Affiliated Hospital of Zhengzhou University NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease Zhengzhou 450052China. Department of General ICU the First Affiliated Hospital of Zhengzhou University Zhengzhou 450052China.

To explore the clinical characteristics and related risk factors of intracerebral hemorrhage (ICH) lesions identified on susceptibility-weighted imaging (SWI) sequences in patients with recent subcortical small infarct (RSSI). The patients with lenticulostriate artery territory RSSI admitted to the Department of Neurology, the First Affiliated Hospital of Zhengzhou University from January 2019 to December 2022 was retrospectively collected. Demographic information, past medical history, laboratory, and imaging data were collected. Observe the ICH lesions in patients on the brain SWI sequence and divide RSSI patients into the coexisting-ICH group (=37) and the non-ICH group (=324) according to whether they have ICH. At the same time, the hemorrhage-related imaging features coexisting such as cerebral microbleeds (CMBs), cerebral surface siderosis (cSS), and probable cerebral amyloid angiopathy (CAA). Multifactorial logistic regression model was used to analyze the associated factors of ICH lesions in RSSI patients. A total of 361 patients with RSSI in the lenticulostriate artery territory area were included. The mean age was (60±12) years, with 243 male patients (67.3%). Among them, 37 patients (10.2%) had coexisting ICH lesions, mainly presenting as strict deep type [29 cases (78.4%)], with others including strict lobar type [2 cases (5.4%)], infratentorial type [2 cases (5.4%)], and mixed type[ 4 cases (10.8%)]. 30 cases (8.3%) had concomitant strict lobar CMBs, 5 cases (1.4%) had cSS, and 23 cases (6.4%) met the Boston 2.0 criteria for probable CAA. Multivariate logistic regression model analysis revealed that the high-grade enlargement of perivascular spaces in the basal ganglia (HEPVS) (=3.356,95%:1.208-9.320,=0.020) were associated with the presence of ICH lesions. When the total cerebral small vessel disease (CSVD) burden score was used to represent other CSVD imaging markers for analysis, the CSVD total burden score (=2.319,95%:1.596-3.372,<0.001) was also

关键词：脑出血近期皮质下小梗死脑微出血皮质表面铁沉积血管周围间隙横断面研究

Photoluminescence upgradation of La_(2)MgTiO_(6):2%Dy^(3+) perovskite with monovalent(Li^(+)),divalent(Ba^(2+),Sr^(2+)) and trivalent(Bi^(3+),Sm^(3+))cation sensitization

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Journal of Rare Earths 2025年第1期43卷 47-56,I0002页

作者： V.P.Veena k.Arun C.k.Shilpa S.V.Jasira k.M.Nissamudeen School of Pure and Applied Physics Kannur UniversityPayyanur CampusEdatKannurKrala67 India Department of Nanoscience and Nanotechnology Kannur UniversityPayyanur CampusEdatkannurKerala670327India

Nano phosphors of 2%Dy^(3+)(wt%)doped La_(2)MgTiO_(6) and monovalent/divalent/trivalent co-doped La_(1.98)Dy_(0.02)MgTiO_(6):x%A^(y+)(A^(y+):Li+,Ba^(2+),Sr^(2+),Bi^(3+),and Sm^(3+);0≤x≤2 wt%)were synthesized by combustion *** the XRD data,it is deduced that an increase in the valency of co-dopant increases the crystallinity of the double perovskite orthorhombic nanocrystal *** an increase in co-dopant size,an elevation in optical bandgap is visible with the highest bandgap of 3.835 eV for Bi^(3+).The photo-absorption is monotonically broadened for Sr^(2+),Sm^(3+),and Li+around 200-450 ***351 nm,Dy^(3+)triggered lattice shows major characteristic emission peaks at 480 nm(^(4)F_(9/2)→^(6)H_(15/2)),574 nm(^(4)F_(9/2)→^(6)H_(13/2)),and 670 nm(^(4)F_(9/2)→^(6)H_(11/2)).leading to near white light emission with CIE coordinates(0.341,0.376).Upon co-doping,the PL intensity is significantly increased with maximum emission for trivalent Sm^(3+),followed by divalent Sr^(2+)and monovalent Li+*** increasing excitation wavelength,Sr^(2+)shows a dominated output and it is found that divalent Sr^(2+)is a potential codopant that could enhance luminescence intensity up to 6 times with a Sr^(2+)→Dy^(3+)energy transfer efficiency of 86%.It is specified that the CIE coordinates of Li+co-doped samples show ideal white emission with color coordinates(0.333,0.336).The concluding outcomes signify the noblest rare earth Sm^(3+)co-doping and thus Sm^(3+)→Dy^(3+)energy transfer mechanism is discussed in detail.

关键词： Photoluminescence Perovskite WLED Co-doping Rareearths

Two-plasmon-decay instability stimulated by dual laser beams in inertial confinement fusion

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Matter and Radiation at Extremes 2025年第1期10卷 48-56页

作者： C.-W.Lian y.Ji R.yan J.Li L.-F.Wang y.-k.Ding J.Zheng Department of Modern Mechanics University of Science and Technology of ChinaHefeiAnhui 230026China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China Department of Plasma Physics and Fusion Engineering University of Science and Technology of ChinaHefei 230026China Institute of Applied Physics and Computational Mathematics Beijing 100088China

Two-plasmon-decay instability(TPD)poses a critical target preheating risk in direct-drive inertial confinement *** this paper,TPD collectively driven by dual laser beams consisting of a normal-incidence laser beam(Beam-N)and a large-angle-incidence laser beam(Beam-L)is investigated via particle-in-cell *** is found that significant TPD growth can develop in this regime at previously unexpected low laser intensities if the intensity of Beam-L exceeds the large-angle-incidence *** beams contribute to the growth of TPD in a“seed-amplification”manner in which the absolute instability driven by Beam-L provides the seeds that are convectively amplified by Beam-N,making TPD energetically important and causing significant pump depletion and hot-electron generation.

关键词： laser pump decay

COHOMOLOGy VANISHING IN HILBERT SPACES

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Chinese Annals of Mathematics,Series B 2004年第1期25卷 87-96页

作者： J.kAJIWARA LIXIAODONG k.H.shon GraduateSchoolofMathematics KyushuUniversity33Fukuoka812-8581Japan. CollegeofAppliedMathematics UniversityofElectronicScienceandTechnologyofChinaChengdu610054China. DepartmentofMathematics PusanNationalUniversityPusan609-735Korea.

The authors give two cohomology vanishing theorems for domains, which are not pseudoconvex, and characterize the holomorphy of domains with smooth boundaries in separable Hilbert spaces through cohomology vanishing.

关键词： Infinite dimension Cohomology vanishing Pseudoconvexity

Geochemistry and petrogenesis of magnesian high-k granitoids from Bundelkhand Craton,Central India:New insights into crustal evolution

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Acta Geochimica 2025年第1期44卷 36-58页

作者： Shailendra k.Prajapati Meraj Alam Parashar Mishra Hemant kumar Geological Survey of India Northern RegionLucknowUP 226024India Department of Geology Indira Gandhi National Tribal UniversityAmarkantakMP 484887India

Background The Bundelkhand Craton is significant for preserving the multiphase granitoids magmatism from Paleoarchean to Neoarchean *** consists of a variety of granite rocks,including TTGs,sanukitoids,and high-k *** study presents geochemical characteristics of high-silica(68.97 wt.%–73.99 wt.%),low-silica(58.73wt.%–69.94 wt.%),and high k_(2)O(2.77 wt.%–6.16 wt.%)contents of *** The data on Bundelkhand Craton’s granitic magmatism and geodynamics is not sufficiently *** data from this study will be used to further understand the origin,source,and petrogenesis of granitoid rocks and their implications for the evolution of *** Twenty-one samples were collected and analyzed for major,trace,and REE *** elements were measured using X-ray fluorescence spectrometry(XRF),and trace and REE elements were analyzed by *** procedures from the Geological Survey of India were *** The geochemical analysis presents high-silica(68.97-73.99 wt.%),low-silica(58.73-69.94 wt.%),and high k_(2)O(2.77-6.16 wt.%)contents in granitoids,classified as *** rocks are calcic to calcalkalic,magnesian,and range from peraluminous to metaluminous *** patterns showed strong LREE enrichment relative to HREEs,with prominent negative Eu anomalies corresponding to earlier plagioclase ***-element patterns revealed negative anomalies in Nb,Sr,P,and Ti and positive anomalies in *** The geochemical signatures attributed to the post-collisional magma generation and continental crustal *** studied rocks show A-type and A2-type lineage,suggesting they originated from the melting of continental crust during transitional/post-collisional tectonic *** formation of hybrid granitoids in the Bundelkhand Craton is connected to the fractionation of hybrid magmas in shallow-seated magma chambers during these tectonic processes.

关键词： Geochemistry Petrogenesis A-type granites Crustal evolution Bundelkhand craton

Vision Transformer for Extracting Tropical Cyclone Intensity from Satellite Images

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Advances in Atmospheric Sciences 2025年第1期42卷 79-93页

作者： ye TIAN Wen ZHOU Paxson kyCHEUNG Zhenchen LIU Low-Carbon and Climate Impact Research Centre School of Energy and EnvironmentCity University of Hong KongSARChina key Laboratory of Polar Atmosphere-ocean-ice System for Weather and Climate Ministry of Education&Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric SciencesFudan UniversityShanghai 200433China

Tropical cyclone(TC)intensity estimation is a fundamental aspect of TC monitoring and *** learning models have recently been employed to estimate TC intensity from satellite images and yield precise *** work proposes the ViT-TC model based on the Vision Transformer(ViT)*** images of TCs,including infrared(IR),water vapor(WV),and passive microwave(PMW),are used as inputs for intensity *** indicate that combining IR,WV,and PMW as inputs yields more accurate estimations than other channel *** ensemble mean technique is applied to enhance the model's estimations,reducing the root-mean-square error to 9.32 kt(knots,1 kt≈0.51 m s^(-1))and the mean absolute error to 6.49 kt,which outperforms traditional methods and is comparable to existing deep learning *** model assigns high attention weights to areas with high PMW,indicating that PMW magnitude is essential information for the model's *** model also allocates significance to the cloud-cover region,suggesting that the model utilizes the whole TC cloud structure and TC eye to determine TC intensity.

关键词： Vision Transformer tropical cyclones intensity estimation deep learning

THE -PROBLEM FOR HOLOMORPHIC (0,2)-FORMS ON PSEUDOCONVEX DOMAINS IN SEPARABLE HILBERT SPACES AND D.F.N. SPACES

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Chinese Annals of Mathematics,Series B 2002年第1期23卷 67-74页

作者： J.LEE k.H.shon DepartmentofMathematicsEducation AndongNationalUniversityAndong760-749Korea DepartmentofMathematics PusanNationalUniversityPusan609-735Korea

This paper shows that the 8-problem for holomorphic (0, 2)-forms on Hubert spaces is solv-able on pseudoconvex open subsets. By using this result, the authors investigate the existence of the solution of the -equation... 详细信息

关键词： -prob1em Pseudoconvex domain Nuclear operator D.F.N. space

Deep view of composite SNR CTA1 with LHAASO in γ-rays up to 300 TeV

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Science China(Physics,Mechanics & Astronomy) 2025年

作者： Zhen Cao F.Aharonian Axikegu y.X.Bai y.W.Bao D.Bastieri X.J.Bi y.J.Bi W.Bian A.V.Bukevich Q.Cao W.y.Cao Zhe Cao J.Chang J.F.Chang A.M.Chen E.S.Chen H.X.Chen Liang Chen Lin Chen Long Chen M.J.Chen M.L.Chen Q.H.Chen S.Chen S.H.Chen S.Z.Chen T.L.Chen y.Chen N.Cheng y.D.Cheng M.C.Chu M.y.Cui S.W.Cui X.H.Cui y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu X.Q.Dong k.k.Duan J.H.Fan y.Z.Fan J.Fang J.H.Fang k.Fang C.F.Feng H.Feng L.Feng S.H.Feng X.T.Feng y.Feng y.L.Feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.k.Gao M.M.Ge T.T.Ge L.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu F.L.Guo J.Guo X.L.Guo y.Q.Guo y.y.Guo y.A.Han O.A.Hannuksela M.Hasan H.H.He H.N.He J.y.He y.He y.k.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu S.C.Hu C.Huang D.H.Huang T.Q.Huang W.J.Huang X.T.Huang X.y.Huang y.Huang y.y.Huang X.L.Ji H.y.Jia k.Jia H.B.Jiang k.Jiang X.W.Jiang Z.J.Jiang M.Jin M.M.kang I.karpikov D.khangulyan D.kuleshov k.kurinov B.B.Li C.M.Li Cheng Li Cong Li D.Li F.Li H.B.Li H.C.Li Jian Li Jie Li k.Li S.D.Li W.L.Li W.L.Li X.R.Li Xin Li y.Z.Li Zhe Li Zhuo Li E.W.Liang y.F.Liang S.J.Lin B.Liu C.Liu D.Liu D.B.Liu H.Liu H.D.Liu J.Liu J.L.Liu M.y.Liu R.y.Liu S.M.Liu W.Liu y.Liu y.N.Liu Q.Luo y.Luo H.k.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao Z.Min W.Mitthumsiri H.J.Mu y.C.Nan A.Neronov k.C.y.Ng L.J.Ou P.Pattarakijwanich Z.y.Pei J.C.Qi M.y.Qi B.Q.Qiao J.J.Qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng F.W.Shu H.C.Song yu.V.Stenkin V.Stepanov y.Su D.X.Sun Q.N.Sun X.N.Sun Z.B.Sun J.Takata P.H.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian L.H.Wan C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang J.C.Wang kai Wang kai Wang L.P.Wang L.y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.y.Wang y.Wang y.D.Wang y.J.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei y.J.Wei T.Wen C.y.Wu H.R.Wu Q.W.Wu S.Wu X.F.Wu y.S.Wu S.Q.Xi J.Xia G.M.Xiang D.X.Xiao G.Xiao y.L.Xin y.Xing D.R.Xiong Z.Xiong D.L.Xu R.F.Xu R.X.Xu W.L.Xu L.Xue D.H.yan J.Z.yan T.yan C.W.yang C.y.yang F.yang F.F.yang L.L.yang M.J.yang R.Z.yang W.X.yang y.H.yao Z.G.yao L.Q.yin N.yin X.H.you Z.y.you y.H Southwest Jiaotong University School of Astronomy and Space Science Nanjing University Center for Astrophysics Guangzhou University Tsung-Dao Lee Institute & School of Physics and Astronomy Shanghai Jiao Tong University Institute for Nuclear Research of Russian Academy of Sciences Hebei Normal University University of Science and Technology of China LHAASO Collaboration State key Laboratory of Particle Detection and Electronics key Laboratory of Dark Matter and Space Astronomy & key Laboratory of Radio Astronomy Purple Mountain Observatory Chinese Academy of Sciences Research Center for Astronomical Computing Zhejiang Laboratory key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences School of Physics and Astronomy key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center yunnan University key Laboratory of Cosmic Rays (Tibet University) Ministry of Education Department of Physics The Chinese University of Hong kong key Laboratory of Radio Astronomy and Technology National Astronomical Observatories Chinese Academy of Sciences School of Physics and Astronomy (Zhuhai) & School of Physics (Guangzhou) & Sino-French Institute of Nuclear Engineering and Technology (Zhuhai) Sun yat-sen University Institute of High Energy Physics Institute of Frontier and Interdisciplinary Science Shandong University APC Université Paris Cité CNRS/IN2P3 CEA/IRFU Observatoire de Paris Department of Engineering Physics & Department of Astronomy Tsinghua University School of Physics and Microelectronics Chinese Academy of Sciences Zhengzhou University yunnan Observatories Chinese Academy of Sciences China Center of Advanced Science and Technology College of Physics Sichuan University School of Physics Peking University Guangxi key Laboratory for Relativistic Astrophysics School of Physical Science and Technology University of Chinese Academy of Sciences Guangxi University Department of Physics Faculty of Science Mahidol University Moscow Institute

The ultra-high-energy（UHE） gamma-ray source 1LHAASO J0007+7303u is positionally associated with the composite SNR CTA1 that is located at high Galactic Latitude b ≈ 10.5°. This provides a rare opportunity to spatially resolve the component of the pulsar wind nebula（PWN） and supernova remnant（SNR） at UHE. This paper conducted a dedicated data analysis of 1LHAASO J0007+7303u using the data collected from December 2019 to July 2023. This source is well detected with significances of 21σ and 17σ at 8-100 TeV and >100 TeV, respectively. The corresponding extensions are determined to be 0.23°±0.03°and 0.17°±0.03°. The emission is proposed to originate from the relativistic electrons accelerated within the PWN of PSR J0007+7303. The energy spectrum is well described by a power-law with an exponential cutoff function dN/dE =（42.4 ± 4.1）(E/（20 TeV）)-2.31±0.11exp(-E/（110±25 TeV）) TeV-1cm-2s-1in the energy range from 8 to 300 TeV, implying a steady-state parent electron spectrum dNe/dEe∝(Ee/（100 TeV）)-3.13±0.16exp[(-Ee/（373±70 TeV）)2] at energies above ≈ 50 TeV. The cutoff energy of the electron spectrum is roughly equal to the expected current maximum energy of particles accelerated at the PWN terminal shock. Combining the X-ray and gamma-ray emission, the current space-averaged magnetic field can be limited to≈ 4.5 μG. To satisfy the multi-wavelength spectrum and the γ-ray extensions, the transport of relativistic particles within the PWN is likely dominated by the advection process under the free-expansion phase assumption.

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