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Sulfur-and Lead-Isotope Geochemistry of the Balugou Cu-Pb-Zn Skarn Deposit in the Wulonggou Area in the Eastern Kunlun Orogen, NW China

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Journal of Earth Science 2016年第5期27卷 740-750页

作者： qingfeng Ding Wei yan Benlong Zhang College of Earth Sciences Jilin University

The small-scale Balugou Cu-Pb-Zn skarn deposit（45 298 tonnages of ore at 0.1% to 3.99% Cu, 0.20% to 0.43% Pb and 0.76% to 10.92% Zn） is located in the Wulonggou area in the eastern Kunlun orogen, NW China. Ore deposition is spatially and temporally related with the pre-collisional Anisian Balugou granites（~244 Ma）. The mineralization hosted by the contact between marble beds within the Paleo-Proterozoic Jinshuikou Group and Balugou granites, was structurally and lithologically controlled. The mineralogy of the Balugou deposit includes an early simple skarn mineral gangue（epidote with little diopside） and a late complicated quartz sulfide assemblage（pyrite, pyrrhotite, chalcopyrite, sphalerite, galena, bornite, quartz, carbonate and chlorite）. The δ34S values of eighteen sulfides range from-2.1‰ to ＋2.8 ‰, with an average of ＋0.07‰, and the calculated δ34SH2S values for H2 S in hydrothermal fluids range from-3.2‰ to ＋2.4‰, with an average of ＋0.03‰, suggesting a relatively homogeneous magmatic（±mantle） source, with sulfur produced directly by the Balugou granites. The sixteen sulfides have 206Pb/204 Pb ratios from 18.367 4 to 18.384 1, 207Pb/204 Pb ratios from 15.634 6 to 15.641 5, and 208Pb/204 Pb ratios from 38.455 5 to 38.485 0, which are close to those of K-feldspars from the Balugou granites, but are far away from age-corrected lead isotopic ratios of six wall-rock samples. So it was considered that the Pb sources of sulfides must be almost derived from the Balugou granites rather than the older wall-rocks. Collectively, it＇s suggested that the Balugou Cu-Pb-Zn deposit belongs to skarn deposit, and the sulfur and lead deposited in it were leached from the Anisian Balugou granites.

关键词： Balugou skarn deposit Wulonggou area eastern Kunlun orogen sulfur isotope leadisotope.

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SnIP-type atomic-scale inorganic double-helix semiconductors: Synthesis, properties, and applications

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Nano Research 2024年第3期17卷 2111-2128页

作者： Mudussar Ali Bowen Zhang Muhammad Khurram qingfeng yan Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China

Flexible inorganic double helical semiconductors similar to DNA have fueled the demand for efficient materials with innovative structures and excellent *** recent discovery of tin phosphide iodide(SnIP),the first carbon-free double helical semiconductor at an atomic level,has opened new avenues of research for semiconducting devices such as thermoelectric and sensor devices,solar cells,and *** has drawn significant academic attention due to its high structural flexibility,band gap in the visible spectrum range,and non-toxic ***,the recent progress in developing SnIP,including its prestigious structure,versatile and intriguing properties,and synthesis,is *** analogues of SnIP and SnIP-based hybrid materials and their applications in photocatalysis are also ***,the review concludes with a critical summary and future aspects of this new inorganic semiconductor.

关键词： tin phosphide iodide(SnIP) inorganic semiconductor inorganic double helix SnIP-based hybrids photocatalysis flexible material

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Synthesis and optical properties of poly[(4-(benzoxazole-2-yl)phenyl)methyl methacrylate] with 1,8-naphthalimide end group

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Chinese Science Bulletin 2009年第1期54卷 59-65页

作者： JIN ZhengNeng XU qingfeng LU JianMei yan Feng XIA XueWei WANG LiHua LI NaJun Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry and Chemical Engineering Suzhou University Suzhou 215123 China

A series of homopolymers,poly[(4-(benzoxazole-2-yl)phenyl)methyl methacrylate] (NAPH-PMABEs) containing benzoxazole side chain and 1,8-naphthalimide end group,were prepared by atom transfer radical polymerization (ATRP) and end-group modification. The structure of NAPH-PMABE was char-acterized by GPC,1H-NMR and UV-vis spectra. The polymer has good solubility in common organic solvents,such as dichloromethane (CH2Cl2),tetrahydrofuran (THF),N,N-dimethylformamide (DMF),chloroform (CHCl3),acetone and toluene. The optical properties of NAPH-PMABE were investigated. Results show that NAPH-PMABE has a composite emission spectrum comprising an ultraviolet com-ponent originating from benzoxazole side chains and a green component originating from 1,8-naphthalimide end group in both solution and film. The intensity of the two emission bands can be easily tuned by changing molecular weight.

关键词：苯并唑化合物聚合物光谱学

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LncFASA promotes cancer ferroptosis via modulating PRDX1 phase separation

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Science China(Life Sciences) 2024年第3期67卷 488-503页

作者： Xiao Fan Fangzhou Liu Xiang Wang Ying Wang Yu Chen Chengyu Shi Xinwan Su Manman Tan qingfeng yan Jinrong Peng Jianzhong Shao yan Xiong Aifu Lin MOE Laboratory of Biosystem Homeostasis and Protection College of Life SciencesZhejiang UniversityHangzhou 310058China Key Laboratoryof Cancer Prevention and Intervention China National Ministry of EducationHangzhou 310009China Cancer Center Zhejiang UniversityHangzhou 310058China Key Laboratory for Cell and Gene Engineering of Zhejiang Province Hangzhou 310058China Department of Central Laboratory the First People's Hospital of HuzhouHuzhou 313000China Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province Affiliated Hangzhou First People's HospitalZhejiang University School of MedicineHangzhou 310006China MOE Key Laboratory for Molecular Animal Nutrition College of Animal SciencesZhejiang UniversityHangzhou 310058China Department of Orthopedic Surgery the Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310000China Breast Center of the First Affiliated Hospital School of MedicineZhejiang UniversityHangzhou 310003China International School of Medicine International Institutes of MedicineThe 4th Affiliated Hospital of Zhejiang University School of MedicineYiwu 322000China

Ferroptosis, a unique type of non-apoptotic cell death resulting from iron-dependent lipid peroxidation, has a potential physiological function in tumor suppression, but its underlying mechanisms have not been fully elucidated. Here, we report that the long non-coding RNA(lncRNA) LncFASA increases the susceptibility of triple-negative breast cancer(TNBC) to ferroptosis. As a tumor suppressor, LncFASA drives the formation of droplets containing peroxiredoxin1(PRDX1), a member of the peroxidase family, resulting in the accumulation of lipid peroxidation via the SLC7A11-GPX4 axis. Mechanistically, LncFASA directly binds to the Ahpc-TSA domain of PRDX1, inhibiting its peroxidase activity by driving liquid-liquid phase separation, which disrupts intracellular ROS homeostasis. Notably, high LncFASA expression indicates favorable overall survival in individuals with breast cancer, and LncFASA impairs the growth of breast xenograft tumors by modulating ferroptosis. Together, our findings illustrate the crucial role of this lncRNA in ferroptosis-mediated cancer development and provide new insights into therapeutic strategies for breast cancer.

关键词： long non-coding RNA peroxiredoxin liquid-liquid phase separation ferroptosis breast cancer

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Synthesis of double-helical snip nanowires for visible-light-driven photocatalytic degradation of dyes

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Science China Materials 2024年第10期67卷 3185-3196页

作者： Mudussar Ali Bowen Zhang Qiang Li qingfeng yan Engineering Research Centre of Advanced Rare Earth Materials(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China

As the first carbon-free double helical semiconductor at an atomic scale,tin phosphide iodide(SnIP)has garnered growing interest due to its high structural flexibility,band gap in the visible spectrum range,and ***,we report the chemical vapor transport synthesis of SnIP nanowires(NWs).The photocatalytic activity of SnIP NWs was evaluated through the degradation of two representative toxic dyes,methylene blue(MB)and malachite green(MG),under visible light irradiation(λ>400 nm).These NWs exhibited notable photocatalytic efficiency,achieving degradation rates over 97%for MB and 95%for MG within 100 min of visible light *** degradation data align well with a pseudo-first-order reaction kinetics model for both dyes,with rate constants of 0.0347 and 0.0295 min^(−1).Furthermore,the synthesized catalyst demonstrated exceptional stability and recyclability,maintaining its efficient performance till six duplicate operations *** testing indicated that holes and OH radicals were the main active species driving the dye’s *** unusual photocatalytic efficiency can be attributed to their favorable band gap within the visible spectrum range and unique onedimensional *** results demonstrate that the SnIP NWs offer a promising choice for eco-friendly dye photodegradation.

关键词： tin phosphide iodide inorganic double-helix semiconductor photocatalyst visible light dye degradation

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Hot carrier cooling in lead halide perovskites probed by two-pulse photovoltage correlation spectroscopy

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Chinese Physics B 2024年第10期33卷 116-119页

作者： Yuqing Huang Chaoyu Guo Lei Gao Wenna Du Haotian Zheng Da Wu Zhengpu Zhao Chu-Wei Zhang Qin Wang Xin-Feng Liu qingfeng yan Ying Jiang International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Department of Chemistry Tsinghua UniversityBeijing 100084China CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials Peking UniversityBeijing 100871China

The next-generation hot-carrier solar cells,which can overcome the Shockley-Queisser limit by harvesting excessenergy from hot carriers,are receiving increasing *** halide perovskite(LHP)materials are considered aspromising candidates due to their exceptional photovoltaic properties,good stability and low *** cooling rate of hotcarriers is a key parameter influencing the performance of hot-carrier solar *** this work,we successfully detected hotcarrier dynamics in operando LHP devices using the two-pulse photovoltage correlation *** enhance the signalto-noise ratio,we applied the delay-time modulation method instead of the traditional power *** advancementallowed us to detect the intraband hot carrier cooling time for the organic LHP CH_(3)NH_(3)PbBr_(3),which is as short as 0.21 *** comparison,the inorganic Cs-based LHP CsPbBr_(3)exhibited a longer cooling time of around 0.59 ps due to differentphonon *** results provide us new insights into the optimal design of hot-carrier solar cells and highlightthe potential of LHP materials in advancing solar cell technology.

关键词： two-pulse correlation spectroscopy lead halide perovskites hot carrier cooling ultrafast dynamics

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Growth of High-Quality CH3NH3PbI3 Perovskite Single Crystal

Growth of High-Quality CH3NH3PbI3 Perovskite Single Crystal

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中国晶体学会第六届学术年会暨会员代表大会（非线性光学及激光晶体材料分会）

作者： Zhipeng Lian Jie Ding Huajing Fang Qianrui Lv qingfeng yan Department of Chemistry Tsinghua University

Organolead halide perovskites have attracted extensive attentions as light harvesting materials for optoelectronic devices due to their high charge carrier mobility,high photoconversion efficiency,and long charge diffusion ***,it is always challenging to obtain commercially desired organolead halide perovskite single crystals with a combination of large size,rapid growth rate and

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高斯脉冲激光激励热电偶时间常数测试及有限元仿真

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应用激光 2020年第3期40卷 526-531页

作者：郝晓闫庆丰中北大学电子测试技术国家重点实验室山西太原030051 中北大学仪器科学与动态测试教育部重点实验室山西太原030051

为了研究高斯脉冲激光激励下的热电偶时间常数测试方法,构建以半导体激光器为加热源的热电偶动态性能测试系统,采用负阶跃信号法分析不同温度下结点裸露式K型热电偶的动态响应曲线。实验首先通过调整激光器输出功率,为热电偶提供目标温... 详细信息

为了研究高斯脉冲激光激励下的热电偶时间常数测试方法,构建以半导体激光器为加热源的热电偶动态性能测试系统,采用负阶跃信号法分析不同温度下结点裸露式K型热电偶的动态响应曲线。实验首先通过调整激光器输出功率,为热电偶提供目标温度。然后立即停止激光加热,使热电偶产生负阶跃形式的动态测温过程。最后通过负阶跃信号法分析热电偶动态响应曲线计算得出时间常数。以目标温度为812.8℃和666.7℃为例分析其动态响应曲线中负阶跃部分,计算得出对应的时间常数值分别为0.3576 s和0.3169 s。同时,基于ANSYS有限元仿真软件平台进行高斯脉冲激光加热热电偶结点的瞬态传热分析研究。设定球形结点半径为1 mm,导热系数为20 W/(m·K),激光光斑半径为4 mm。通过仿真分析得到结点温度由957℃降至负阶跃温差的63.2%时所对应的时间为0.59 s,这为热电偶时间常数值的精准测试提供一定的理论依据和测试方法。

关键词：高斯脉冲激光热电偶时间常数有限元瞬态热分析

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Generation and characterization of the HCM patient-specific iPS Cells with mitochondrial 16S rRNA 2336T＞C mutation

Generation and characterization of the HCM patient-specific ...

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2013浙江省医学遗传学学术年会

作者： Shishi Li Xuan Zhang Wei yang yanrui Song Dajiang Qin qingfeng yan Institute of Genetics College of Life ScienceZhejiang University Key Laboratory of Regenerative Biology South China Institute for Stem Cell Biology and Regenerative MedicineGuangzhou Institutes of Biomedicine and HealthChinese Academy of Sciences

Induced pluripotent stem cells are a type of self-renewal and pluripotent cells artificially derived from adult somatic cells by inducing a "forced" expression of specific *** studies of patient-speci?c iPS cells are going to become the hot field in disease modeling,drug screening and regenerative *** cardiomyopathy(HCM) is a primary disorder characterized by asymmetric thickening of septum and left ventricular wall,with a prevalence of 0.2%in general *** we reported the novel mitochondrial 16S rRNA 2336T>C mutation associated with HCM in a Chinese *** further understand the role of mitochondrial 2336T>C mutation in the pathogenesis and development of HCM,we generated and characterized the iPS Cell lines from HCM patient and normal *** HCM-iPSCs showed typical human ES cell-like morphology,high expression of pluripotency markers and could spontaneous differentiate into derivatives of the three embryonic germ *** were no significant differences in pluripotency between the HCM-iPSCs and normal iPS *** anticipate that the establishment of HCM specific iPS cells with mitochondrial 16S rRNA 2336T>C mutation will help elucidate the mechanisms underlying maternally inherited HCM development.

关键词： induced pluripotent stem cells(iPS cells) mitochondrial DNA 2336T>C mutation hypertrophic cardiomyopathy maternal inheritance

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Nuclear modifier MTO2 modulates the aminoglycoside-sensitivity of mitochondrial 15S rRNA C1477G mutation in yeast Saccharomyces cerevisiae

Nuclear modifier MTO2 modulates the aminoglycoside-sensitivi...

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2013浙江省医学遗传学学术年会

作者： Xiangyu He Xiaoyu Zhu Xuexiang Wang Wei Wang Yu Dai qingfeng yan College of Life Science Zhejiang University

The phenotypic manifestations of mitochondrial DNA(mtDNA) mutations were modulated by mitochondrial haplotypes,nuclear modifier genes and environmental *** yeast mitochondrial 15S rRNA C1477Gmutation(PR) corresponds to human 12S rRNA C1494T and A1555G mutations,which are well known as a primary factor for aminoglycoside-induced and nonsyndromic *** we report that the nuclear modifier gene MT02 deletion suppressed the aminoglycoside-sensitivity of mitochondrial 15S rRNA C1477G mutation in Saccharomyces ***,the strain with a single mtDNA C1477G mutation exhibited hypersensitivity to *** assays indicated that the steady-state level of mitochondrial DNA,the mitochondrial respiratory rate,and the membrane potential decreased significantly after neomycin *** impaired mitochondria could not produce sufficient energy to maintain ***, when the mto2 null and the mitochondrial C1477G mutations co-existed(mto2(PR)),oxygen consumption rate in the double mutant decreased markedly compared to that of control strains(MT02(PS),mto2(PS) and MT02(PR)).The expression levels of key glycolytic genes HXK2,PFK1 and PYK1 in mto2(PR) strain were stimulated by neomycin and up-regulated by 89%,112%and 55%,*** enhanced glycolysis might compensate for the respiratory energy *** findings in yeast will provide a new insight into the pathogenesis of human deafness.

关键词： nuclear modifier gene MT02 mitochondria DNA C1477G mutation aminoglycoside-sensitivity

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