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Texture and Geochemistry of Multi-stage Hydrothermal Scheelite in the Mamupu Cu-Au-Mo(-W)Deposit,Eastern Tibet:Implications for Tungsten Mineralization in the Yulong Belt

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Acta Geologica Sinica(English Edition) 2024年第3期98卷 701-716页

作者： ZHANG Xiaoxu TANG Juxing LIN Bin WANG Qin HE Liang YAN Gang shao Rui wu Qiang DU Qiu ZHAXI Pingcuo Chengdu Center China Geological Survey(Geosciences Innovation Center of Southwest China)Chengdu 610081China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China SinoProbe Laboratory Chinese Academy of Geological SciencesBeijing 100094China Earth Sciences College Chengdu University of TechnologyChengdu 610059China No.6 Geological Party Tibetan Bureau of Geology and Mineral Exploration and DevelopmentLhasa 851400China Tibet Shengyuan Mining Group Co. Ltd.Lhasa 851400China

Multistage tungsten mineralization was recently discovered in the Mamupu copper-polymetallic deposit in the southern Yulong porphyry copper belt(YPCB),*** study reports the results of cathodoluminescence,trace element and Sr isotope analyses of Mamupu scheelite samples,undertaken in order to better constrain the mechanism of W mineralization and the sources of the ore-forming *** different types of scheelite are identified in the Mamupu deposit:scheelite A(Sch A)mainly occurs in breccias during the prograde stage,scheelite B(Sch B)forms in the chlorite-epidote alteration zone in the retrograde stage,while scheelite C(Sch C)occurs in distal quartz sulfide *** extremely high Mo content and negative Eu anomaly in Sch A represent high oxygen fugacity in the prograde *** with ore-related porphyries,Sch A has a similar REE pattern,but with higher ΣREE,more depleted HREE and slightly lower(^(87)Sr/^(86)Sr)i *** features suggest that Sch A is genetically related to ore-related porphyries,but extensive interaction with carbonate surrounding rocks affects the final REE and Sr isotopic *** B shows dark(Sch B-I)and light(Sch B-II)domains under CL *** Sch B-I to Sch B-II,LREEs are gradually depleted,with MREEs being gradually *** C has the highest LREE/HREE ratio,which indicates that it inherited the geochemical characteristics of fluids after the precipitation of HREE-rich minerals,such as diopside and garnet,in the early prograde *** Mo content in Sch B and Sch C gradually decreased,indicating that the oxygen fugacity of the fluids changed from oxidative in the early stages to reductive in the later,the turbulent Eu anomaly in Sch B and Sch C indicating that the Eu anomaly in the Mamupu scheelite is not solely controlled by oxygen *** extensive interaction of magmatic-hydrothermal fluids and carbonate provides the necessary Ca^(2+)for the precipitation of scheelite in the Mamupu deposit.

关键词： scheelite geochemistry Mamupu Cu deposit Yulong porphyry copper belt eastern Tibet

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Revealing the Structure-Property Difference of Natural Rubber Prepared by Different Methods: Protein and Gel Content are Key Factors

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Chinese Journal of Polymer Science 2024年第4期42卷 457-467页

作者： shao-Qi Huang Jun-Qi Zhang Yong Zhu Ling-Min Kong Lu-Sheng Liao Fu-Quan Zhang Zheng-Tian Xie Jin-Rong wu State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu610065China Hainan Provincial Key Laboratory of Natural Rubber Processing Agricultural Products Processing Research Institute of Chinese Academy of Tropical Agricultural SciencesZhanjiang524001China

Natural rubber (NR) is widely used in various fields including aerospace, military industry and transportation due to its superior elasticity and comprehensive mechanical properties. Nonetheless, the commercial NR prepared by different methods usually exhibits different mechanical properties, primarily due to variations in processing conditions during the conversion from latex to bulk rubber material. Consequently, this poses challenges in scientific research and industrial production of NR. In order to assess the properties of various commercially available NR and identify key structural and compositional components, this study systematically compares and analyzes four representative NR raw materials: air dried sheet (ADS), ribbed smoked sheets (RSS), constant viscidity NR (CV), and whole field latex rubber (WF). The investigation focuses on evaluating their static mechanical behavior, SIC behavior, wear resistance, and fatigue resistance. The findings indicate that protein and gel content exhibit a crucial influence on the NR properties. These constituents contribute to the formation of a high-crosslinking density region, generating a heterogeneous network structure within the rubber. This structure amplifies strains during deformation, leading to earlier and stronger strain-induced crystallization (SIC). Among the four commercial NR brands, RSS demonstrates superior overall mechanical and dynamic properties owing to its high protein and gel content. This study serves as a valuable reference for comprehending the differences in properties among various commercial NR, thereby offering guidance for the actual processing and selection of NR.

关键词： Natural rubber Processingmethod Protein Gel content Property

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A Dielectric Ink Combining Acrylate and Cyanate Moieties for Inkjet 3D Printing with Good Thermal Stability

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Chinese Journal of Polymer Science 2024年第6期42卷 766-774页

作者： Yi-xuan Li Liang-Ying wu Yan Yang Yao-Zhong Lu Zhong-Ying Ji Yu-Xiong Guo Xiao-Long Wang Qiao-Sheng Pu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsLanzhou730000China Lanzhou Traditional Chinese Medicine Hospital of Orthopedics and Traumatology Lanzhou730000China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai Zhongke Research Institute of Advanced Materials and Green Chemical EngineeringYantai264006China

Inkjet 3D printing has potential in the additive manufacturing of electronic circuits and ***,inks that can be used for printing layers with T5%>300℃ or hardness>200 MPa have been rarely *** ester(CE)polymers have excellent thermal stability,high strength,and low shrinkage compared to other common dielectric inks for inkjet 3D printing,but cannot be quickly shaped by ultraviolet(UV)irradiation or thermal *** CEs with UV-curable monomers may be a possible way to accelerate crosslinking,but there are challenges from the adverse effects of the dilution of both *** this study,dielectric inks with acrylate and cyanate moieties were *** low viscosity and surface tension of the CE precursor(Bisphenol E cyanate ester)were combined with photocurable acrylate diluent monomers and cross-linker to realize an ink suitable for inkjet 3D *** internal dual three-dimensional cross-linked network structure resin was prepared by a combination of photocuring and thermal curing with T5%up to 326.69℃,hardness up to 431.84 MPa,dielectric constant of 2.70 at 8 GHz,and shrinkage of 1.64%.The developed dielectric inks can be applied to the 3D printing of printed circuit boards and other electronic devices that require dielectric properties.

关键词： Inkjet printing Cyanate ester resin 3D doubly cross-linked network Good thermal stability

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High-density triple-phase contact points for enhanced photocatalytic CO_(2) reduction to methanol

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Chinese Chemical Letters 2024年第2期35卷 252-256页

作者： Hanwen Jian Kaiming Deng Tongyu Wang Chengxi Huang Fang wu Hailing Huo Bo Ouyang xuan Liu Jingjing Ma Erjun Kan Ang Li MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing School of ScienceNanjing University of Science and TechnologyNanjing 210094China College of Information Science and Technology Nanjing Forestry UniversityNanjing 210037China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021China

The efficiency of photocatalytic CO_(2) reduction reaction(PCRR)is restricted by the low solubility and mobility of CO_(2) in water,poor CO_(2) adsorption capacity of catalyst,and competition with hydrogen evolution reaction(HER).Recently,hydrophobic modification of the catalyst surface has been proposed as a potential solution to induce the formation of triple-phase contact points(TPCPs)of CO_(2)(gas phase),H_(2) O(liquid phase),and catalysts(solid phase)near the surface of the catalyst,enabling direct delivery of highly concentrated CO_(2) molecules to the active reaction sites,resulting in higher CO_(2) and lower H+surface *** TPCPs thus act as the ideal reaction points with enhanced PCRR and suppressed ***,the initial synthesis of triple-phase photocatalysts tends to possess a lower bulk density of TPCPs due to the simple structure leading to limited active points and CO_(2) adsorption ***,based on constructing a hydrophobic hierarchical porous TiO_(2)(o-HPT)with interconnected macropores and mesopores structure,we have significantly increased the density of TPCPs in a unit volume of the *** with hydrophobic macroporous TiO_(2)(o-MacPT)or mesoporous TiO_(2)(o-MesPT),the o-HPT with increased TPCP density leads to enhanced photoactivity,enabling a high methanol production rate with 1111.5μmol g^(−1) h^(−1) from *** results emphasize the significance of high-density TPCPs design and propose a potential path for developing efficient PCRR systems.

关键词： Photocatalysis CO_(2)reduction reaction Photocatalyst Triple-phase contact points Methanol

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Fluorine-doped carbon quantum dots with deep-red emission for hypochlorite determination and cancer cell imaging

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Chinese Chemical Letters 2024年第6期35卷 433-438页

作者： Boran Cheng Lei Cao Chen Li Fang-Yi Huo Qian-Fang Meng Ganglin Tong xuan wu Lin-Lin Bu Lang Rao Shubin Wang Department of Oncology Shenzhen Key Laboratory of Gastrointestinal Cancer Translational ResearchCancer InstitutePeking University Shenzhen HospitalShenzhen-Peking University-Hong Kong University of Science and Technology Medical CenterShenzhen 518036China Institute of Biomedical Health Technology and Engineering Shenzhen Bay LaboratoryShenzhen 518132China The State Key Laboratory Breeding Base of Basic Science of Stomatology(Hubei-MOST)&Key Laboratory of Oral Biomedicine Ministry of Education School&Hospital of StomatologyWuhan UniversityWuhan 430079China

As a type of new carbon-based nanomaterials,carbon dots(CDs)possess exceptional optical properties,making them highly desirable for use in fluorescent ***,the CDs with deep-red(DR)or near-infrared(NIR)emission have rarely been *** this work,we prepared deep-red emissive fluorine-doped carbon quantum dots(F-CDs)by introducing a precursor simultaneously containing fluorine and *** synergistic effect of nitrogen doping and D-π-A pattern production contributed to the maximum emission of F-CDs at 636 nm with an absolute quantum yield of 36.00%±0.68%.Moreover,we designed an F-CDs-based fluorescence assay to determine the content of hypochlorite(ClO^(-)),with a limit of detection(LOD)as low as 15.4 nmol/L,indicating the high sensitivity of F-CDs to ClO^(-).In real samples,the F-CDs-based fluorescent sensor exhibited excellent sensitivity and selectivity in the detection of ClO^(-),with an error below 2%,suggesting their great potential in daily *** cancer cell imaging,the F-CDs not only demonstrated high sensitivity to ClO^(-)but also exhibited excellent mitochondria targeting,as evidenced by the high Pearson's correlation coefficient(PCC)of 0.93 in colocalization *** work presented here suggests the great potential of replacing commercial dyes with F-CDs for highly specific mitochondria labeling and cell imaging.

关键词： Carbon dots Near-infrared Cell imaging Mitochondria labeling Hypochlorite determination

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Changes in blood lipid levels and influencing factors among treatment-naïve adult male HlV/AlDS patients following BlC/FTC/TAF vs.3TC+EFV+TDF

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Chinese Medical Journal 2024年第12期137卷 1447-1452页

作者： Xi Wang An Liu Zaicun Li Hongwei Zhang Ruojun Esther wu Ying shao Jianwei Li Jiangzhu Ye Wei Liu Lijun Sun Clinic of Center for Infection Beijing Youan HospitalCapital Medical UniversityBeijing 100069China Harvard School of Dental Medicine BostonMAUSA Department of Pharmacy Beijing Youan HospitalCapital Medical UniversityBeijing 100069China Chinese Association of STD and AIDS Prevention and Control Beijing 100050China

Background:Antiretroviral therapy(ART)was often associated with dyslipidemia among human immunodeficiency virus(HIV)/acquired immunodeficiency syndrome(AIDS)*** study aimed to assess treatment-naïve adult male patients with HIV/AIDS who initiated ART with either co-formulated bictegravir,emtricitabine,and tenofovir alafenamide(BIC/FTC/TAF)or lamivudine,efavirenz,and tenofovir disoproxil fumarate(3TC+EFV+TDF),monitoring at weeks 4,12,24,and ***:A case-control retrospective study was *** newly diagnosed HIV-infected individuals attending the sexual transmission disease(STD)/AIDS clinic of Beijing Youan Hospital,Capital Medical University,from January to December *** patients were divided into BIC/FTC/TAF group or 3TC+EFV+TDF ***-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C),triglyceride(TG),and total cholesterol(TC)at different time points over 48 weeks between two groups were compared.A multivariate Cox regression model was used to identify relevant influencing factors for the population at high risk of increased ***:A total of 870 participants,with 510 in BIC/FTC/TAF group and 360 in 3TC+EFV+TDF *** were no statistically significant differences in median age,baseline CD4/CD8 ratio,median body mass index(BMI)between the two *** both two groups,levels of TG,TC,and LDL-C were higher at 4 weeks,12 weeks,and 24 weeks of treatment(all P0.05).In addition,the differences in average changes of the level of TG,TC,HDL-C,and LDL-C from weeks 4,12,24,and 48 to baseline between two groups were not statistically significant(all P>0.05).Multivariate Cox proportional risk model analysis showed that initiating ART with HIV RNA≥10^(5)copies/mL(compared with<10^(5)copies/mL)was associated with an increased risk of elevated LDL-C(hazard ratio=1.26,95%confidence interval:1.07-1.48,

关键词： Antiretroviral therapy Blood lipids Bictegravir/emtricitabine/tenofovir alafenamide Lamivudine,efavirenz,and tenofovir disoproxil fumarate BIC/FTC/TAF 3TC+EFV+TDF HIV AIDS

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Copper-catalyzed enantioselective desymmetrizing C（sp2）–H functionalization of azide-ynamides via α-imino copper carbenes

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Science China Chemistry 2024年第9期67卷 2982-2988页

作者： En-He Huang Li-Gao Liu You-Wei Yin Hao-xuan Dong Ji-Jia Zhou Xin Lu Bo Zhou Long-wu Ye Key Laboratory for Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences

α-Imino metal carbenes are versatile intermediates in organic synthesis, and have broad applications in the assembly of divergent N-heterocycles. However, the catalytic enantioselective desymmetrization based on α-imino metal carbenes has not been developed to date. Herein, we disclose an enantioselective desymmetrizing C（sp2）–H functionalization of azide-ynamides via α-imino copper carbenes, leading to the efficient assembly of divergent chiral indoloazepines in generally moderate to excellent yields with high enantioselectivities. Notably, this reaction represents the first enantioselective desymmetrization based on α-imino metal carbenes. Further synthetic transformations and biological tests show the potential utility of this method. Moreover,computational studies are employed to elucidate the reaction mechanism and the origin of enantioselectivity.

关键词： enantioselective desymmetrization metal carbenes copper catalysis nitrene transfer alkynes

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Therapeutic genome editing of an aberrant splice site inβ-thalassemia by CRISPR/Cas9 with multiple sgRNAs

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Genes & Diseases 2024年第1期11卷 15-18页

作者： Fei Yang Shuqian Xu Chao Huang Zhiqiang shao Yuefen Hu Yang Yang Yongrong Lai Qing Ke Dan Liang Yuxuan wu Shanghai Key Laboratory of Regulatory Biology Institute of Biomedical Sciences and School of Life SciencesEast China Normal UniversityShanghai 200241China Department of Obstetrics and Gynecology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui 230022China NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract(Anhui Medical University) HefeiAnhui 230032China Department of Hematology Qilu HospitalCheeloo College of MedicineShandong UniversityJinanShandong 250012China BRLMedicine Inc. Shanghai 201108China Department of Hematology The First Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi 530000China Department of Neurology The First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang 310003China

Genetic mutations cause aberrant splicing,one of the important molecular mechanisms in human ***2-654,a mutation causing aberrant splicing ofβ-globin premRNA and contributing toβ-globin deficiency,is one of the most common diseases in Southeast Asia and China."In our previous work,we found a TTTV protospacer adjacent motif(PAM)by the Cas12a system and the editing efficiency of Ivs2-654 C>T achieving 76.7%.

关键词： CRISPR/Cas9 China thalassemia

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Topological reorganization and functional alteration of distinct genomic components in gallbladder cancer

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Frontiers of Medicine 2024年第1期18卷 109-127页

作者： Guoqiang Li Peng Pu Mengqiao Pan Xiaoling Weng Shimei Qiu Yiming Li Sk Jahir Abbas Lu Zou Ke Liu Zheng Wang Ziyu shao Lin Jiang Wenguang wu Yun Liu Rong shao Fatao Liu Yingbin Liu Department of Biliary-Pancreatic Surgery Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China State Key Laboratory of Oncogenes and Related Genes Shanghai Cancer InstituteShanghai200127China Shanghai Key Laboratory of Biliary Tract Disease Shanghai200082China Department of Health Science and Engineering University of Shanghai for Science and TechnologyShanghai200082China Shanghai Tenth People’s Hospital of Tongji University Shanghai200072China Department of General Surgery Xinhua HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200082China Department of Pharmacology Shanghai Jiao Tong University School of MedicineShanghai200025China

Altered three-dimensional architecture of chromatin influences various genomic regulators and subsequent gene expression in human ***,knowledge of the topological rearrangement of genomic hierarchical layers in cancer is largely ***,by taking advantage of in situ Hi-C,RNA-sequencing,and chromatin immunoprecipitation sequencing(ChIP-seq),we investigated structural reorganization and functional changes in chromosomal compartments,topologically associated domains(TADs),and CCCTC binding factor(CTCF)-mediated loops in gallbladder cancer(GBC)tissues and cell *** observed that the chromosomal compartment A/B switch was correlated with CTCF binding levels and gene expression *** inter-TAD interactions with weaker TAD boundaries were identified in cancer cell lines relative to normal ***,the chromatin short loops and cancer unique loops associated with chromatin remodeling and epithelial–mesenchymal transition activation were enriched in cancer compared with their control ***-specific enhancer–promoter loops,which contain multiple transcription factor binding motifs,acted as a central element to regulate aberrant gene *** of individual enhancers in each loop anchor that connects with promoters led to the inhibition of their corresponding gene ***,our data offer the landscape of hierarchical layers of cancer genome and functional alterations that contribute to the development of GBC.

关键词： 3D genome cancer TADs loop gene regulation

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Development and validation of a model integrating clinical and coronary lesion-based functional assessment for longterm risk prediction in PCI patients

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Journal of Geriatric Cardiology 2024年第1期21卷 44-63页

作者： shao-Yu wu Rui ZHANG Sheng YUAN Zhong-Xing CAI Chang-Dong GUAN Tong-Qiang ZOU Li-Hua XIE Ke-Fei DOU State Key Laboratory of Cardiovascular Disease BeijingChina Cardiometabolic Medicine Center Fu Wai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Catheterization Laboratories Fu Wai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Cardiology Fu Wai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

OBJECTIVES To establish a scoring system combining the ACEF score and the quantitative blood flow ratio(QFR) to improve the long-term risk prediction of patients undergoing percutaneous coronary intervention(PCI).METHODS In this population-based cohort study, a total of 46 features, including patient clinical and coronary lesion characteristics, were assessed for analysis through machine learning models. The ACEF-QFR scoring system was developed using 1263consecutive cases of CAD patients after PCI in PANDA Ⅲ trial database. The newly developed score was then validated on the other remaining 542 patients in the *** In both the Random Forest Model and the Deep Surv Model, age, renal function(creatinine), cardiac function(LVEF)and post-PCI coronary physiological index(QFR) were identified and confirmed to be significant predictive factors for 2-year adverse cardiac events. The ACEF-QFR score was constructed based on the developmental dataset and computed as age(years)/EF(%) + 1(if creatinine ≥ 2.0 mg/d L) + 1(if post-PCI QFR ≤ 0.92). The performance of the ACEF-QFR scoring system was preliminarily evaluated in the developmental dataset, and then further explored in the validation dataset. The ACEF-QFR score showed superior discrimination(C-statistic = 0.651;95% CI: 0.611-0.691, P < 0.05 versus post-PCI physiological index and other commonly used risk scores) and excellent calibration(Hosmer–Lemeshow χ^(2)= 7.070;P = 0.529) for predicting 2-year patient-oriented composite endpoint(POCE). The good prognostic value of the ACEF-QFR score was further validated by multivariable Cox regression and Kaplan–Meier analysis(adjusted HR = 1.89;95% CI: 1.18–3.04;log-rank P < 0.01) after stratified the patients into high-risk group and low-risk *** An improved scoring system combining clinical and coronary lesion-based functional variables(ACEF-QFR)was developed, and its ability for prognostic prediction in patients with PCI was further validated to be signi

关键词： patients coronary prediction

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