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| 1 | Diamonds and Other Exotic Minerals Recovered from Peridotites of the Dangqiong Ophiolite, Western Yarlung-Zangbo Suture Zone, Tibet显示文摘Various combinations of diamond, moissanite, zircon, quartz, corundum, rutile, titanite, almandine garnet, kyanite, and andalusite have been recovered from the Dangqiong peridotites. More than 80 grains of diamond have been recovered, most of which are pale yellow to reddish-orange to colorless. The grains are all 100-200 μm in size and mostly anhedral, but with a range of morphologies including elongated, octahedral and subhedral varieties. Their identification was confirmed by a characteristic shift in the Raman spectra between 1325 cm^(-1) and 1333 cm^(-1), mostly at 1331.51 cm^(-1) or 1326.96 cm^(-1). Integration of the mineralogical, petrological and geochemical data for the Dongqiong peridotites suggests a multi-stage formation for this body and similar ophiolites in the Yarlung-Zangbo suture zone. Chromian spinel grains and perhaps small bodies of chromitite crystallized at various depths in the upper mantle, and encapsulated the UHP, highly reduced and crustal minerals. Some oceanic crustal slabs containing the chromian spinel and their inclusion were later trapped in suprasubduction zones(SSZ), where they were modified by island arc tholeiitic and boninitic magmas, thus changing the chromian spinel compositions and depositing chromitite ores in melt channels. | XIONG Fahui YANG Jingsui ROBINSON Paul T. XU Xiangzhen BA Dengzhu LI Yuan ZHANG Zhongming RONG He | 2016 | Acta Geologica Sinica(English Edition)2016，90，2： | 20 |
| 2 | Biomass-Derived Porous Carbon-Based Nanostructures for Microwave Absorption显示文摘Currently,electromagnetic(EM) pollution poses severe complication toward the operation of electronic devices and biological systems.To this end,it is pertinent to develop novel microwave absorbers through compositional and structural design.Porous carbon(PC)materials demonstrate great potential in EM wave absorption due to their ultralow density,large surface area,and excellent dielectric loss ability.However,the large-scale production of PC materials through low-cost and simple synthetic route is a challenge.Deriving PC materials through biomass sources is a sustainable,ubiquitous,and low-cost method,which comes with many desired features,such as hierarchical texture,periodic pattern,and some unique nanoarchitecture.Using the bio-inspired microstructure to manufacture PC materials in mild condition is desirable.In this review,we summarize the EM wave absorption application of biomass-derived PC materials from optimizing structureand designing composition.The corresponding synthetic mechanisms and development prospects are discussed as well.The perspective in this field is given at the end of the article. | Huanqin Zhao Yan Cheng Wei Liu Lieji Yang Baoshan Zhang Luyuan Paul Wang Guangbin Ji Zhichuan J.Xu | 2019 | Nano-Micro Letters2019，11，2： | 12 |
| 3 | Diamond Discovered in High-Al Chromitites of the Sartohay Ophiolite,Xinjiang Province,China显示文摘In recent years diamonds and other exotic minerals have been recovered from mantle peridotites and high-Cr chromitites of a number of ophiolites of different age and different tectonic environments. Here we report a similar collection of minerals from the Sartohay ophiolite of Xinjiang Province,western China,which is characterized by having high-Al chromitites. Several samples of massive podiform chromitite with an aggregate weight of nearly 900 kg yielded diamonds,moissanite and other highly reduced minerals,as well as common crustal minerals. Thus far,more than 20 grains each of diamond and moissanite have been recovered from heavy mineral separates of the chromitites. The diamonds are all 100-200 μm in size and range in color from pale yellow to reddish-orange to colorless. Most of the grains are anhedral to subhedral octahedra,commonly with elongate forms exhibiting well-developed striations. They all display characteristic Raman spectra with shifts between 1325 cm-1 and 1333 cm-1,mostly 1331.51 cm-1 or 1326.96 cm-1. The moissanite grains are light blue to dark blue,broken crystals,50-150 μm across,commonly occurring as small flakes or fragments. Their typical Raman spectra have shifts at 762 cm-1,785 cm-1,and 966 cm-1. This investigation extends the occurrence of diamonds and moissanite to a Paleozoic ophiolite in the Central Asian Orogenic Belt and demonstrates that these minerals can also occur in high-Al chromitites. We conclude that diamonds and moissanite are likely to be ubiquitous in ophiolitic mantle peridotites and chromitites. | TIAN Yazhou YANG Jingsui Paul T.ROBINSON XIONG Fahui LI Yuan ZHANG Zhongming LIU Zhao LIU Fei NIU Xiaolu | 2015 | Acta Geologica Sinica(English Edition)2015，89，2： | 9 |
| 4 | Diamonds Discovered from High–Cr Podiform Chromitites of Bulqiza,Eastern Mirdita Ophiolite,Albania显示文摘Various combinations of diamond, moissanite, zircon, corundum, rutile and titanitehave been recovered from the Bulqiza chromitites. More than 10 grains of diamond have been recovered, most of which are pale yellow to reddish–orange to colorless. The grains are all 100–300 μm in size and mostly anhedral, but with a range of morphologies including elongated, octahedral and subhedral varieties. Their identification was confirmed by a characteristic shift in the Raman spectra between 1325 cm^(-1) and 1333 cm^(-1), mostly at 1331.51 cm^(-1) or 1326.96 cm^(-1). This investigation extends the occurrence of diamond and moissanite to the Bulqiza chromitites in the Eastern Mirdita Ophiolite. Integration of the mineralogical, petrological and geochemical data of the Bulqiza chromitites suggests their multi–stage formation. Magnesiochromite grains and perhaps small bodies of chromitite formed at various depths in the upper mantle, and encapsulated the ultra–high pressure, highly reduced and crustal minerals. Some oceanic crustal slabs containing the magnesiochromite and their inclusion were later trapped in suprasubduction zones, where they were modified by tholeiitic and boninitic arc magmas, thus changing the magnesiochromite compositions and depositing chromitite ores in melt channels. | XIONG Fahui YANG Jingsui ROBINSON Paul T. DILEK Yildirim MILUSHI Ibrahim XU Xiangzhen ZHOU Wenda ZHANG Zhongming RONG He | 2017 | Acta Geologica Sinica(English Edition)2017，91，2： | 9 |
| 5 | pH-responsive mesoporous silica nanoparticles employed in controlled drug delivery systems for cancer treatment显示文摘In the fight against cancer, controlled drug delivery systems have emerged to enhance the therapeutic efficacy and safety of anti-cancer drugs. Among these systems, mesoporous silica nanoparticles(MSNs) with a functional surface possess obvious advantages and were thus rapidly developed for cancer treatment. Many stimuli-responsive materials, such as nanoparticles, polymers, and inorganic materials, have been applied as caps and gatekeepers to control drug release from MSNs. This review presents an overview of the recent progress in the production of pH-responsive MSNs based on the pH gradient between normal tissues and the tumor microenvironment. Four main categories of gatekeepers can respond to acidic conditions. These categories will be described in detail. | Ke-Ni Yang Chun-Qiu Zhang Wei Wang Paul C.Wang Jian-Ping Zhou Xing-Jie Liang | 2014 | Cancer Biology & Medicine2014，11，1： | 8 |
| 6 | Origin of Listwanite in the Luobusa Ophiolite,Tibet,Implications for Chromite Stability in Hydrothermal Systems显示文摘Listwanite from the Luobusa ophiolite,Tibet,forms a narrow,discontinuous band along the eastern part of the southern boundary fault. We undertook a detailed petrographic and geochemical study to understand the mineral transformation processes and the behaviour of major and trace elements during listwanite formation. Three alteration zones characterized by distinct mineral components and texture are recognized and,in order of increasing degree of alteration,these are: zoneIII is rich in serpentine minerals; zoneII is rich in talc and carbonates; and zoneI is mainly composed of carbonates and quartz. Geochemical data for the three alteration zones show significant modification of some major and trace elements in the protolith,although some oxides show linear correlations with Mg O. Gold mineralization is recognized in the Luobusa listwanite and may signify an important target for future mineral exploration. Gold enrichment occurs in both zoneI and zoneIIand is up to 0.91 g/t in one sample from zoneI. We show that CO2-rich hydrothermal fluids can modify both the occurrence and composition of chromite grains,indicating some degree of chromite mobility. Low-Cr anhedral grains are more easily altered than high-Cr varieties. The compositions of chromite and olivine grains in the listwanite suggest a dunite protolith. | ZHANG Lan YANG Jingsui Paul T.ROBINSON XIONG Fahui CHEN Yanhong LAI Shengmin CHEN Mei | 2015 | Acta Geologica Sinica(English Edition)2015，89，2： | 6 |
| 7 | 液相/质谱(LC/MS)技术用于有机磷农药分析显示文摘 | Paul Zavitsanos Paul Yang Lorna Grey | 2002 | 环境化学2002，21，1： | 6 |
| 8 | Initial movement of the Karakorum Fault in western Tibet:constraints from SHRIMP U-Pb dating of zircons显示文摘The Karakorum Fault zone(KFZ)plays an important role in understanding the formation,evolvement and deformation of the Tibetan Plateau.The high-T dextral shearing metamorphic rocks,e.g.,mylonites or mylonitized gneisses-granites,locally crop out along the southeastern part of the KFZ in the Ayila Ri’gyüRange area.The SHRIMP U-Pb dating of the syn-kinematic crystallized zircons indicates that the initial age of the KFZ is^27 Ma,~10 Ma older than previous results.The extensive high-T dextral shearing along the KFZ started at least at 27-20 Ma,accompanied by the syn-kinematic emplacement of leuco-granites.Deformation and concomitant fluid circulation during shearing most likely occurred as early as at 25-13 Ma.The KFZ probably grew from southeast to northwest along the fault as a result of continuous convergence between the India plate and Eurasia plate. | LI HaiBing Franck VALLI LIU DunYi XU ZhiQin YANG JingSui Nicolas ARNAUD Paul TAPPONNIER Robin LACASSIN CHEN SongYong QI xuexiang | 2007 | Chinese Science Bulletin2007，52，8： | 6 |
| 9 | Intranasal administration of carbamazepine-loaded carboxymethyl chitosan nanoparticles for drug delivery to the brain显示文摘Epilepsy is considered as a common and diverse set of chronic neurological disorders and its symptoms can be controlled by antiepileptic drugs(AEDs). The presence of p-glycoprotein and multi-drug resistance transporters in the blood-brain barrier could prevent the entry of AEDs into the brain, causing drug resistant epilepsy. To overcome this problem, we propose using carboxymethyl chitosan nanoparticles as a carrier to deliver carbamazepine(CBZ) intranasally with the purpose to bypass the blood-brain barrier thus to enhance the brain drug concentration and the treatment efficacy. Results so far indicate that the developed CBZNPs have small particle size(218.76 ± 2.41 nm) with high drug loading(around 35%) and high entrapment efficiency(around 80%). The in vitro release profiles of CBZ from the NPs are in accordance with the Korsmeyer-peppas model. The in vivo results show that both encapsulation of CBZ in nanoparticles and the nasal route determined the enhancement of the drug bioavailability and brain targeting characteristics. | Shanshan Liu Shili Yang Paul C.Ho | 2018 | Asian Journal of Pharmaceutical Sciences2018，13，1： | 6 |
| 10 | Involvement of cholinergic system in suppression ot formalin-induced inflammatory pain by cobratoxin显示文摘瞄准: 调查 cobratoxin (CTX ) 的止痛效果,长链的 α从泰国眼镜蛇恶意的神经毒素,在导致福尔马林的煽动性的疼痛的一个老鼠模型。 | Gao-na SHI Yan-li LIU Hai-ming LIN Shi-lin YANG Yu-lin Feng Paul F REID Zheng-hong QIN | 2011 | Acta Pharmacologica Sinica2011，32，10： | 6 |
| 11 | The Discovery of Diamonds in Chromitites of the Hegenshan Ophiolite,Inner Mongolia,China显示文摘Diamond,moissanite and a variety of other minerals,similar to those reported from ophiolites in Tibet and northern Russia,have recently been discovered in chromitites of the Hegenshan ophiolite of the Central Asian Orogenic Belt,north China. The chromitites are small,podiform and vein-like bodies hosted in dunite,clinopyroxene-bearing peridotite,troctolite and gabbro. All of the analysed chromite grains are relatively Al-rich,with Cr# [100Cr/(Cr+Al)] of about 47–53. Preliminary studies of mainly disseminated chromitite from ore body No. 3756 have identified more than 30 mineral species in addition to diamond and moissanite. These include oxides(mostly hematite,magnetite,rutile,anatase,cassiterite,and quartz),sulfides(pyrite,marcasite and others),silicates(magnesian olivine,enstatite,augite,diopside,uvarovite,pyrope,orthoclase,zircon,sphene,vesuvianite,chlorite and serpentine) and others(e.g.,calcite,monazite,glauberite,iowaite and a range of metallic alloys). This study demonstrates that diamond,moissanite and other exotic minerals can occur in high-Al,as well as high-Cr chromites,and significantly extends the geographic and age range of known diamond-bearing ophiolites. | HUANG Zhu YANG Jingsui Paul T.ROBINSON ZHU Yongwang XIONG Fahui LIU Zhao ZHANG Zhongming XU Wei | 2015 | Acta Geologica Sinica(English Edition)2015，89，2： | 6 |
| 12 | A Voltage Sensorless Finite Control Set-Model Predictive Control for Three-Phase Voltage Source PWM Rectifiers显示文摘In this paper,a grid voltage sensorless model predictive control is proposed and verified by simulation and experimental tests for a PWM rectifier.The presented method is simple and cost effective due to no need of modulator and voltage sensors.The developed sliding mode voltage observer(SMVO)can theoretically track the grid voltage accurately without phase lag and magnitude error.Based on the proposed SMVO,the finite control set-model predictive control(FCS-MPC)is incorporated for power regulation.The active power and reactive power are calculated and predicted using the measured current and the estimated grid voltage from the SMVO.With the predicated power for one-step delay compensation,the best voltage vector minimizing the tracking error is selected by FCS-MPC.The whole algorithm is implemented in stationary frame without using Park's transformation.Both the simulation and experimental results validate the effectiveness of the proposed method. | Haitao Yang Yongchang Zhang Nong Zhang Paul D.Walker Jihao Gao | 2016 | Chinese Journal of Electrical Engineering2016，2，2： | 5 |
| 13 | 抗炎介质表达缺陷参与中性粒细胞型支气管哮喘发病机制:半乳糖凝集素-3和白细胞介素-1RA/白细胞介素-1beta比例显著下降显示文摘支气管哮喘(哮喘)是具有异质性的气道炎症性疾病,其主要特点表现为气道高反应和可变的气流受限。在哮喘的发病机制中,过敏原诱导的TH2淋巴细胞激活以及IL-5介导的嗜酸粒细胞渗出起到重要的作用。近年来发现超过50%的哮喘患者气道的嗜酸粒细胞水平并不增高,并将这种亚型定义为非嗜酸粒细胞型哮喘。其中部分患者表现为气道中性粒细胞明显增高,称为中性粒细胞型哮喘。 | 高鹏 Peter G Gibson Katherine J Baines Ian A Yang John W Upham Paul N Reynolds Sandra Hodge Alan L James Christine Jenkins Matthew J Peters 张捷 Jodie L Simpson | 2016 | 中华结核和呼吸杂志2016，39，11： | 5 |
| 14 | Latest Wuchiapingian to Earliest Triassic Conodont Zones and δ13 Ccarb Isotope Excursions from Deep-Water Sections in Western Hubei Province, South China显示文摘Deep-water facies sections have advantages of recording complete information across the Permian-Triassic boundary(PTB). Here we present a detailed study on the conodont biostratigraphy and carbon isotope profile ranges from the Wuchiapingian-Changhsingian boundary(WCB) to the PTB of two deep-water facies sections at Zhuqiao and Shiligou in the Middle Yangtze region, western Hubei, South China. Fifteen species and three genera are identified. Eight conodont zones are recognized which in ascending order are the Clarkina orientalis, C. wangi, C. subcarinata, C. changxingensis, C. yini, C. meishanensis, Hindeodus parvus and Isarcicella isarcica zones. The onset of deposition of the deep-water siliceous strata of Dalong Formation in western Hubei began in the Late Wuchiapingian and persisted to the Late Changhsingian. Carbon isotope negative excursions occur near both the WCB and PTB in both sections. The WCB δ13 Ccarb negative excursion is in the C. orientalis and C. wangi zones. The PTB δ13 Ccarb negative excursion began in the C. yini Zone and extended to the I. isarcica Zone. The absence of several Changhsingian zones may indicate the difficulty of extracting conodonts from siliceous strata or the presence of an intra-Changhsingian hiatus. | Bo Yang Hanxiao Li Paul B. Wignall Haishui Jiang Zhijun Niu Qian Ye Qiong Wu Xulong Lai | 2019 | Journal of Earth Science2019，30，5： | 5 |
| 15 | Catalytic microwave assisted pyrolysis of aspen显示文摘The effect of catalysts on the microwave pyrolysis of aspen pellets was studied.A range of chlorides,nitrates and metal-oxides were added at 2%of the aspen mass(air dry aspen pellet weight basis).Chlorides in particular were found to favor liquid yield,especially the yield of water phase residue.Average liquid yield with added chlorides was 41%mass of the total biomass input,compared to 35%mass without catalyst.Metal-oxides were found to favor pyrolysis heavy oil,and thus total oil yield,since the yield of light oils seemed to be fairly constant.Nitrates were found to favor pyrolysis gas production.Pure light oils and light oils blended with diesel were found to be a potential diesel fuel substitute. | Johannes Moen Changyan Yang Bo Zhang Hanwu Lei Kevin Hennessy Yiqin Wan Zhiping Le Yuhuan Liu Paul Chen Roger Ruan | 2009 | International Journal of Agricultural and Biological Engineering2009，2，4： | 5 |
| 16 | Cell cycle-related kinase reprograms the liver immune microenvironment to promote cancer metastasis显示文摘The liver is an immunologically tolerant organ and a common metastatic site of multiple cancer types.Although a role for cancer cell invasion programs has been well characterized,whether and how liver-intrinsic factors drive metastatic spread is incompletely understood.Here,we show that aberrantly activated hepatocyte-intrinsic cell cycle-related kinase(CCRK)signaling in chronic liver diseases is critical for cancer metastasis by reprogramming an immunosuppressive microenvironment.Using an inducible liverspecific transgenic model,we found that CCRK overexpression dramatically increased both B16F10 melanoma and MC38 colorectal cancer(CRC)metastasis to the liver,which was highly infiltrated by polymorphonuclear-myeloid-derived suppressor cells(PMNMDSCs)and lacking natural killer T(NKT)cells.Depletion of PMN-MDSCs in CCRK transgenic mice restored NKT cell levels and their interferon gamma production and reduced liver metastasis to 2.7% and 0.7%(metastatic tumor weights)in the melanoma and CRC models,respectively.Mechanistically,CCRK activated nuclear factor-kappa B(NF-κB)signaling to increase the PMN-MDSC trafficking chemokine C-X-C motif ligand 1(CXCL1),which was positively correlated with liver-infiltrating PMN-MDSC levels in CCRK transgenic mice.Accordingly,CRC liver metastasis patients exhibited hyperaaivation of hepatic CCRK/NF-κB/CXCL1 signaling,which was associated with accumulation of PMN-MDSCs and paucity of NKT cells compared to healthy liver transplantation donors.In summary,this study demonstrates that immunosuppressive reprogramming by hepatic CCRK signaling undermines antimetastatic immunosurveillance.Our findings offer new mechanistic insights and therapeutic targets for liver metastasis intervention. | Xuezhen Zeng Jingying Zhou Zhewen Xiong Hanyong Sun Weiqin Yang Myth T.S.Mok Jing Wang Jingqing Li Man Liu Wenshu Tang Yu Feng Hector Kwong-Sang W ang Shun-Wa Tsang King-Lau Chow Philip Chun Yeung John Wong Paul Bo-San Lai Anthony Wing-Hung Chan Ka Fai To Stephen Lam Chan Qiang Xia Jing Xue Xiao Chen Jun Yu Sui Peng Joseph Jao-Yiu Sung Ming Kuang Alfred Sze-Lok Cheng | 2021 | Cellular & Molecular Immunology2021，18，4： | 5 |
| 17 | Integrative taxonomy of the Russet Bush Warbler Locustella mandelli complex reveals a new species from central China显示文摘Background: The Russet Bush Warbler Locustella(previously Bradypterus) mandelli complex occurs in mountains in the eastern Himalayas, southern China, Vietnam, the Philippines, and Indonesia. The taxonomy has been debated,with one(L. seebohmi) to four(L. seebohmi, L. mandelli, L. montis and L. timorensis) species having been recognised.Methods: We used an integrative approach, incorporating analyses of morphology, vocalizations and a molecular marker, to re-evaluate species limits in the L. mandelli complex.Results: We found that central Chinese L. mandelli differed from those from India through northern Southeast Asia to southeast China in plumage, morphometrics and song. All were easily classified by song, and(wing + culmen)/tail ratio overlapped only marginally. Both groups were reciprocally monophyletic in a mitochondrial cytochrome b(cytb) gene tree, with a mean divergence of 1.0 ± 0.2%. They were sympatric and mostly altitudinally segregated in the breeding season in southern Sichuan province. We found that the Mt Victoria(western Myanmar) population differed vocally from other L. mandelli, but no specimens are available. Taiwan Bush Warbler L. alishanensis was sister to the L. mandelli complex, with the most divergent song. Plumage, vocal and cytb evidence supported the distinctness of the south Vietnamese L. mandelli idonea. The Timor Bush Warbler L. timorensis, Javan Bush Warbler L.montis and Benguet Bush Warbler L. seebohmi differed distinctly in plumage, but among-population song variation in L. montis exceeded the differences between some populations of these taxa, and mean pairwise cytb divergences were only 0.5–0.9%. We also found that some L. montis populations differed morphologically.Conclusions: We conclude that the central Chinese population of Russet Bush Warbler represents a new species,which we describe herein, breeding at mid elevations in Sichuan, Shaanxi, Hubei, Hunan and Guizhou provinces.The taxonomic status of the other allopatric populations is less clear. However, as they differ to a degree comparable with that of the sympatric L. mandelli and the new species, we elevate L. idonea to species status, and retain L. seebohmi and L. montis as separate species, the latter with timorensis as a subspecies. Further research should focus on different populations of L. montis and the Mt Victoria population of L. mandelli. | Per Alstrom Canwei Xia Pamela C Rasmussen Urban Olsson Bo Dai Jian Zhao Paul J Leader Geoff J Carey Lu Dong Tianlong Cai Paul I Holt Hung Le Manh Gang Song Yang Liu Yanyun Zhang Fumin Lei | 2015 | Chinese Birds2015，，2： | 4 |
| 18 | Large-scale synthesis of N-doped carbon capsules supporting atomically dispersed iron for efficient oxygen reduction reaction electrocatalysis显示文摘The large-scale synthesis of platinum-free electrocatalysts for the oxygen reduction reaction(ORR)remains a grand challenge.We report the large-scale production of stable and active ORR electrocatalysts based on iron,an earth-abundant element.A core–shell zeolitic imidazolate framework–tannic acid coordination polymer composite(ZIF-8@K-TA)was utilized as the catalyst precursor,which was transformed into iron atoms dispersed in hollow porous nitrogen-doped carbon capsules(H-Fe-N_(x)-C)through ion exchange and pyrolysis.H-Fe-N_(x)-C fea-tures site-isolated single-atom iron centers coordinated to nitrogen in graphitic layers,high levels of nitrogen doping,and high permeability to incoming gases.Benefiting from these characteristics,H-Fe-N_(x)-C demonstrated efficient electrocatalytic activity(E_(1/2)=0.92 V,vs.RHE)and stability towards the ORR in both alkaline and acidic media.In ORR performance,it surpassed the majority of recently reported Fe-N-C catalysts and the standard Pt/C catalyst.In addition,H-Fe-N_(x)-C showed outstanding tolerance to methanol. | Hui Yang Yanfang Liu Xiaolu Liu Xiangke Wang He Tian Geoffrey I.N.Waterhouse Paul E.Krugere Shane GTelfer Shengqian Ma | 2022 | eScience2022，2，2： | 4 |
| 19 | Platinum-group Mineral(PGM) and Base-metal Sulphide(BMS) Inclusions in Chromitites of the Zedang Ophiolite, Southern Tibet, China and their Petrogenetic Significance显示文摘Voluminous platinum-group mineral(PGM) inclusions including erlichmanite(Os,Ru)S_2, laurite(Ru,Os)S_2, and irarsite(Ir,Os,Ru,Rh)As S, as well as native osmium Os(Ir) and inclusions of base metal sulphides(BMS), including millerite(NiS), heazlewoodite(Ni_3S_2), covellite(CuS) and digenite(Cu_3S_2), accompanied by native iron, have been identified in chromitites of the Zedang ophiolite, Tibet. The PGMs occur as both inclusions in magnesiochromite grains and as small interstitial granules between them; most are less than 10 μm in size and vary in shape from euhedral to anhedral. They occur either as single or composite(biphase or polyphase) grains composed solely of PGM, or PGM associated with silicate grains. Os-, Ir-, and Ru-rich PGMs are the common species and Pt-, Pd-, and Rh-rich varieties have not been identified. Sulfur fugacity and temperature appear to be the main factors that controlled the PGE mineralogy during crystallization of the host chromitite in the upper mantle. If the activity of chalcogenides(such as S, and As) is low, PGE clusters will remain suspended in the silicate melt until they can coalesce to form alloys. Under appropriate conditions of ?S_2 and ?O_2, PGE alloys might react with the melt to form sulfides-sulfarsenides. Thus, we suggest that the Os, Ir and Ru metallic clusters and alloys in the Zedang chromitites crystallized first under high temperature and low ?S_2, followed by crystallization of sulphides of the laurite-erlichmanite, solid-solution series as the magma cooled and ?S_2 increased. The abundance of primary BMS in the chromitites suggests that ?S_2 reached relatively high values during the final stages of magnesiochromite crystallization. The diversity of the PGE minerals, in combination with differences in the petrological characteristics of the magnesiochromites, suggest different degrees of partial melting, perhaps at different depths in the mantle. The estimated parental magma composition suggests formation in a suprasubduction zone environment, perhaps in a forearc. | GUO Guolin YANG Jingsui Paul T.ROBINSON LIU Xiaodong XU Xiangzhen XIONG Fahui | 2016 | Acta Geologica Sinica(English Edition)2016，90，3： | 4 |
| 20 | Association of XPG rs2094258 polymorphism with gastric cancer prognosis显示文摘BACKGROUND The xeroderma pigmentosum group G(XPG)gene at chromosome 13q33 consists of 15 exons,which may be related to the occurrence and development of gastric cancer(GC).AIM To examine the association of several common single nucleotide polymorphisms(SNPs)of the XPG gene with GC risk and survival.METHODS Five SNPs of XPG(rs2094258,rs751402,rs873601,rs2296147,and rs1047768)were genotyped by PCR restriction fragment length polymorphism in 956 histologically confirmed GC cases and 1012 controls in North China.GC patients were followed for survival status and,if deceased,cause of death.Logistic regression and Cox regression were used for analysing associations of XPG SNPs with risk of GC and prognosis,respectively.For rs2094258,heterozygous model(CT vs CC),homozygous model(TT vs CC),recessive model(TT vs CT+CC),and dominant model(TT+CT vs CC)were analyzed.RESULTS None of the examined loci were statistically associated with GC risk,although rs2296147 was marginally associated with GC risk(P=0.050).GC patients with the rs2094258 CT+CC genotype showed worse survival than those with the TT genotype(log-rank test,P=0.028),and patients with the CC genotype had a tendency of unfavourable prognosis compared with those with the TT+CT genotype(log-rank test,P=0.039).The increase in C alleles of rs2094258[hazard ratio(HR)=1.19,95%confidence interval(CI):1.02-1.45,P=0.037]were associated with the long-term survival of GC cases.Other risk factors for survival included tumor differentiation(HR=4.51,95%CI:1.99-8.23,P<0.001),lymphovascular invasion(HR=1.97,95%CI:1.44-3.01,P<0.001),and use of chemotherapy(HR=0.81,95%CI:0.63-0.98,P=0.041).CONCLUSION The XPG rs2094258 polymorphism may be associated with overall survival in GC patients. | Xiao-Qin Wang Paul D Terry Yang Li Yue Zhang Wen-Jing Kou Ming-Xu Wang | 2019 | World Journal of Gastroenterology2019，25，34： | 4 |
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