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| 1 | The Genesis Mechanism of the Mantle Fluid Action and Evolution in the Ore-Forming Process: A Case Study of the Laowangzhai Gold Deposit in Yunnan, China显示文摘Based on petrological studies of the wall rocks, mineralizing rocks, ores and veins from the Laowangzhai gold deposit, it is discovered that along with the development of silication, carbonation and sulfidation, a kind of black opaque ultra-microlite material runs through the spaces between grains, fissures and cleavages. Under observations of the electron microprobe, scanning electronic microscopy and energy spectrum, this kind of ultra-microlite material is confirmed to consist of ultra microcrystalline quartz, silicate, sulfides and carbonates, as well as rutile, scheelite and specularite (magnetite), showing characters of liquation by the analyses of SEM and energy spectrum. The coexistence of immiscibility and precipitating co-crystallization strongly suggests that the mineralizing fluid changed from the melt to the hydrothermal fluid. Combined with the element geochemical researches, it is realized that the ultra-microlite aggregate is the direct relics of the mantle fluid behaving like a melt and supercritical fluid, which goes along with the mantle-derived magma and will escape from the magma body at a proper time. During the alteration process, the nature of the mantle fluid changed and it is mixed with the crustal fluid, which are favorable for mineralization in the Loawangzhai gold deposit. | LIU Xianfan LI Chunhui LU Qiuxia DENG Biping SONG Xiangfeng ZHAO Fufeng CHU Yating XIAO Jixiong YI Liwen HUANG Yupeng | 2012 | Acta Geologica Sinica(English Edition)2012，86，3： | 13 |
| 2 | The effect of Fe-Mn minerals and seawater interface and enrich-ment mechanism of ore-forming elements of polymetallic crusts and nodules from the South China Sea显示文摘Ferromanganese crusts and nodules are important submarine mineral resources that contain various metal elements with significant economic value. In this study, polymetallic crusts and nodules obtained from the South China Sea(SCS) were determined by using X-ray power diffraction(XRD), Raman spectroscopy(RS), Fourier transform infrared spectroscopy(FTIR), and X-ray photoelectron spectroscopy(XPS) to systematically investigate and analyze the mineralogical and spectral characteristics of the Fe-Mn minerals. XRD measurements revealed that the SCS polymetallic crusts and nodules were composed of vernadite, quartz, and plagioclase. The nodules also contained todorokite. The Fe-phase minerals of the SCS crusts and nodules were composed of amorphous Fe oxide/hydroxide, and the Mn-and Fe-phases minerals exhibited relatively poor degrees of crystallization. FTIR results showed that the Fe-Mn minerals in the crusts and nodules included a large number of surface hydroxyl groups. These surface hydroxyl groups contained protons that could provide reactive sites for complexation of ore-forming elements in seawater. XPS results indicated that the surfaces of the Fe-Mn minerals mainly contained Fe, Mn, and O. Fe was present in the trivalent oxidation state, while Mn, which may contain several bivalent oxidation state, was present in the tetravalent and trivalent oxidation states. The SCS polymetallic crusts and nodules were compared with Pacific seamount crusts, and results showed that the surface hydroxyl(-OH) groups of the SCS crusts and nodules numbered more than the lattice oxygen(O^(2-)). But the lattice oxygen of Pacific seamount crusts numbered more than the surface hydroxyl groups. This characteristic indicated that the degree of crystallization of Fe-Mn minerals from the Pacific Ocean was higher than that of minerals from the South China Sea. Comprehensive studies showed that ore-forming elements in the interface between seawater and the Fe-Mn minerals in the submarine ferromanganese crusts and nodules employed the following enrichment mechanisms:(1) the metal ion complexed with the surface hydroxyl of Fe-Mn minerals to form hydroxyl complexes, which were connected by coordination bonds or stable inner-sphere complexes that exchanged protons on the mineral surfaces;(2) the charged surfaces of the minerals and metal cations formed outer-sphere complexes, which made up the electrostatic double layer, through electrostatic adsorption; and(3) the metal cations isomorphously exchanged the Mn and Fe ions of the mineral lattice structure. | GUAN Yao SUN Xiaoming IANG Xiaodong SA Rina ZHOU Li HUANG Yi LIU Yating LI Xiaojie LU Rongfei WANG Chi | 2017 | Acta Oceanologica Sinica2017，36，6： | 4 |
| 3 | The petrographical and isotope geochemical tracers for deep ore-forming fluids from the Laowangzhai gold depoist in the northern part of the Ailao Mountains显示文摘Based on the petrological studies of wall rocks, mineralized rocks, ores and veins from the Laowangzhai gold deposit, it is discovered that with the development of silification, carbonation and sulfidation, a kind of black opaque ultracrystalline material runs through the space between grains and amphibole cleavages, which is the product of fast condensing consolidation with magma mantle fluids turning into hydrothermal crustal fluids in the process of mineralization and alteration. It is thought that the water in ore-forming fluids mainly derived from magmatic water through research on H-O isotopes, and C as well as S isotopic compositions, has clear mantle-derived characteristics, and rock (mine) stones contain high 87Sr/86 Sr ratios, low 143Nd/144 Nd ratios and high 206Pb/204 Pb ratios, which also reflects the ore-forming fluids were derived from the metasomatically enriched mantle. In combination with the features of H-O-C-S isotopes and Sr-Nd-Pb isotopes described above, the ore-forming fluids of the Laowangzhai gold deposit in the northern part of the Ailao Mountains were derived mainly from the deep interior of the mantle, and their properties were transformed from magma fluids to hydrothermal fluids in the course of metasomatism and alteration, which initiated crust-mantle contamination simultaneously to be in favor of mineralization. | DENG Biping LIU Xianfan ZHANG Min LU Qiuxia ZHAO Fufen LI Chunhui CHU Yating XU Yaoyao TIAN Xiaomin LI Hui | 2013 | Chinese Journal Of Geochemistry2013，32，3： | 4 |
| 4 | Inhibitory mechanism of angiotensin-converting enzyme inhibitory peptides from black tea显示文摘The aim of this work is to discover the inhibitory mechanism of tea peptides and to analyse the affinities between the peptides and the angiotensin-converting enzyme(ACE)as well as the stability of the complexes using in vitro and in silico methods.Four peptide sequences identified from tea,namely peptides I,II,III,and IV,were used to examine ACE inhibition and kinetics.The half maximal inhibitory concentration(IC_(50))values of the four peptides were(210.03±18.29),(178.91±5.18),(196.31±2.87),and(121.11±3.38)μmol/L,respectively.The results of Lineweaver-Burk plots showed that peptides I,II,and IV inhibited ACE activity in an uncompetitive manner,which requires the presence of substrate.Peptide III inhibited ACE in a noncompetitive manner,for which the presence of substrate is not necessary.The docking simulations showed that the four peptides did not bind to the active sites of ACE,indicating that the four peptides are allosteric inhibitors.The binding free energies calculated from molecular dynamic(MD)simulation were-72.47,-42.20,-52.10,and-67.14 kcal/mol(1 kcal=4.186 kJ),r espectively.The lower IC_(50)value of peptide IV may be attributed to its stability when docking with ACE and changes in the flexibility and unfolding of ACE.These four bioactive peptides with ACE inhibitory ability can be incorporated into novel functional ingredients of black tea. | Yating LU Yu WANG Danyi HUANG Zhuang BIAN Peng LU Dongmei FAN Xiaochang WANG | 2021 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2021，22，7： | 2 |
| 5 | 显示文摘 | Linsebigler A Lu G Yates J T | 1995 | Chem Rev1995，95，： | 2 |
| 6 | Targeting EZH1/2 induces cell cycle arrest and inhibits cell proliferation through reactivation of p57CDKN1C and TP53INP1 in mantle cell lymphoma显示文摘Objective: To explore the effect of dysregulation of epigenetic regulator EZH1 and EZH2 on the proliferation in MCL and the underlying mechanisms.Methods: In this study, we elucidated the role of EZH1 and EZH2 overexpression by immunohistochemistry and correlated them to clinical outcome in 41 MCL patients.Quantitative real-time PCR and Western blot were applied to confirm the level of EZH1 and EZH2 in well-characterized MCL cell lines which were compared to those of na?ve B cells.Then we manipulated the expression of EZH1 and EZH2 in MCL cells using CRISPR/Cas9 system to directly investigate their functional roles in MCL.We also evaluated the effect of two small molecule selective inhibitors, EPZ005687 and UNC1999, on MCL cell proliferation, cell cycle distribution and apoptosis in vitro.Finally, we performed RNA-sequencing(RNA-Seq) and Chromatin immunoprecipitation(ChIP) assay to further gain insight into the underlying molecular mechanisms.Results: We found that EZH2 protein is overexpressed in approximately half of this cohort of MCL cases.More importantly, the overexpression of EZH2 is associated with poor OS in the patients.Nevertheless, simple EZH2 depletion in vitro has little impact on the viability of MCL cells, predominantly because of the consequent up-regulation of EZH1.Consistently, UNC1999, a dual EZH1/2 inhibitor, unlike the EZH2 selective inhibitor EPZ005687, exerts a potent inhibitory effect on MCL cells.Furthermore, we discover CDKN1C and TP53 INP1 as the two important cell cycle regulators, the expression of which are repressed by EZH1/2 mediated epigenetic regulation and are restored by EZH1/2 dual inhibition.Conclusions: Our study suggests that EZH2 participates in the pathogenesis of MCL which may serve as a potential biomarker for prognosis prediction.The dual inhibition of EZH1/2 is a promising therapeutic strategy for MCL. | Wei Li Chengfeng Bi Yating Han Tian Tian Xianhuo Wang Huijing Bao Xiaoying Xu Xuhan Zhang Lu Liu Weiwei Zhang Hai Gao Huaqing Wang Huilai Zhang Bin Meng Xi Wang Kai Fu | 2019 | Cancer Biology & Medicine2019，16，3： | 2 |
| 7 | Photo-catalysis on TiO2 surface: :principles, mechanism and selected results显示文摘 | Linsebiger A L Lu Gangquan Yates J T | 1995 | Chem Rev1995，95，3： | 1 |
| 8 | Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results 显示文摘 | Linsebigler A L Lu G Yates J T | 1995 | Chemical Reviews1995，95，3： | 1 |
| 9 | Photocatalysis on TiO2 surface: principles, mechanisms and selected results 显示文摘 | Linsebiger A L Lu G Q Yates J T | 1995 | Chem Rev1995，95，： | 1 |
| 10 | Photocatalysis on TiO2 surface:principles,mechanisms and selected results显示文摘 | Linsebigler A L Lu G Q Yates J T | 1995 | Chem Rev1995，95，3： | 1 |
| 11 | Photocatalysis on TiO2Surfaces:Principles,Mechanisms,and Selected Results显示文摘 | LINSEBIGLER A L LU G Q YATES J T | 1995 | Chemical Reviews1995，95，3： | 1 |
| 12 | photo-catalysis on TiO2 surfaces: principles, mechanisms, and selected results 显示文摘 | Linsebigler A L Lu G Q Yates JT | 1995 | Chemical Review1995，25，： | 1 |
| 13 | Photocatalysis on TiO2 surfaces: Principles, mechanism, and selected results 显示文摘 | Linsebigler A L Lu G Yate J T | 1995 | Chem Rev1995，95，3： | 1 |
| 14 | Photocatalysis on TiO2 Surface:Principles,Mechanisms and Selected Results显示文摘 | Linsebigler A L Lu G Q Yates J T | 1995 | ChemRev1995，95，3： | 1 |
| 15 | 查看详情显示文摘 | A. Linsebigler G. Lu Jr. J. Yates | | 0，，： | 1 |
| 16 | Photocatalysis on TiO2 surfaces:principles,Mechanisms,and selected results显示文摘 | Linsebigler A L Lu G Yates J T | 1995 | Chemical Reviews1995，，95： | 1 |
| 17 | Photocatalysis onTiO2 surfaces rinciples mechanisms and selected results 显示文摘 | Linsebigler A L Lu G Q Yates J T | 1995 | Chemical Reviews1995，95，3： | 1 |
| 18 | Photocatalysis on TiO2 surface: principles,mechanisms,and selected results显示文摘 | LINSEBIGLER A L LU G YATES J T | 1995 | Chem Rev1995，95，： | 1 |
| 19 | Photocatalysis on TiO2 surfaces: Principles, Mechanisms, and Selected Results 显示文摘 | Linsebigler A L Lu G Q Yates J T | 1995 | Chemical Reviews1995，95，73： | 1 |
| 20 | Photocatalysis on TiO2 surfaces:principles,mechanisms,and selected results显示文摘 | Linsebigler A L Lu G Q Yates J T | 1995 | Chemical Reviews1995，95，3： | 1 |
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