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Structural geochemistry of gold mineralization in the Linglong-Jiaojia district, Shandong Province, China

Chinese Journal Of Geochemistry 2007年第3期26卷 215-234页

作者： Huan-zhang LU Guy Archambault LI Yuansheng WEI Jiaxue centre d＇ètudes sur les ressources minèrales Universitè du Quèbec a Chicoutimi Chicoutimi Quebèc G7H 2BI Canada Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Institute of mineral deposits Chinese Academy of Geological Sciences Beijing 100027 China Guangzhou Institute of Geochemisto＇ Chinese Academy of Sciences Guangzhou 510640 China

The Linglong-Jiaojia district is one of the most important regions containing gold deposits in China. These gold deposits can be divided into: a) the pyrite-gold-quartz vein type (Linglong type), which is controlled by brittle-ductile to ductile deformation structures, and b) the alteration-zone type (Jiaojia type), characterized by small veinlets, or the disseminated type recognized in brittle shear zones. Lode gold deposits in the Jiaojia area occur in NE brittle fracture zones, formed in a dominantly simple shear deformation regime, mainly in thrust attitude with a minor sinistral strike slip component. In the Linglong area, the lode gold deposits are located at the intersection of three types of structures: NNE and NE brittle-ductile fault zones and the ENE ductile reverse shear zone in the south of the area. The structural characteristics of these brittle shear zones are consistent with a tectonic NNW-SSE principal stress field orientation. Similar stresses explain the ENE Qixia fold axes, the Potouqing and several other ENE reverse ductile shear zones elsewhere in the region, the Tancheng-Lujiang fault zone and its subsidiaries in the vicinity of the Linglong-Jiaojia district, as well as the southern ENE suture zone north of Qingdao. Therefore these structural systems occurred as part of different major tectonic events under NNW-SSE compression principal stress fields in the area. Gold deposits are hosted in smaller-scale structures within the brittle fault zones and brittle-ductile shear zones. Although ore bodies and, on a smaller scale, quartz ore veins often seem to be randomly oriented, it is possible to explain their distribution and orientation in terms of the simple shear deformation process under which they were developed. The progressive simple shear failure is characterized by various fracture modes (tension and shear) that intervene in sequence. The tension and shear fractures are influenced by the stress level (depth of burial beneath the paleosur

关键词：剪切区域地球化学改造类型中国

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Microstructural analysis of a subhorizontal gold-quartz vein deposit at donalda,Abitibi greenstone belt,Canada:Implications for hydrodynamic regime and fluid-structural relationship

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Geoscience Frontiers 2011年第4期2卷 529-538页

作者： Guoxiang Chi Jayanta Guha department of Geology University of Regina Regina Saskatchewan Canada Sciences de la Terre/centre d＇Etude sur les ressources minerales Universite du Quebec a Chicoutimi Chicoutimi Quebec Canada

The donalda gold deposit in the southern part of the Archean Abitibi greenstone belt consists mainly of a subhonzontal gold-quartz vein perpendicular to subvertical shear *** 0.3—0.5 m thick vein is characterized by vein-parallel banding structures indicating multiple episodes of fracture opening and mineral *** of the c-axis of primary growth quartz indicates that quartz preferentially grew perpendicular to the fracture,suggesting open space filling and/or extensional nature of the *** of the orientations of microfractures,veinlets and fluid—inclusion planes（FIPs） crosscutting primary growth quartz indicates that the vein minerals were subject to a vertical maximum principal stress（σ_1）,which is inconsistent with the subhorizontalσ_1 inferred from the regional stress field with N—S *** apparent discrepancy is explained by invoking episodic fluid pressure fluctuation between supralithostatic and hydrostatic regimes accompanied by episodic opening and closing of the sub-horizontal *** fluid pressure was higher than the lithostatic value,the fracture was opened and primary growth minerals were precipitated,whereas when fluid pressure decreased toward the hydrostatic value,the hanging wall of the fracture collapsed,causing collision of protruding primary growth minerals from both sides of the fracture and resulting in formation of vein-parallel deformation *** columns where the two facing sides of the fracture collided were subject to higher-than-lithostatic stress due to the bridging effect and reduced support surface area,explaining the development of verticalσ_*** hypothesis is consistent the fault-valve model,and explains the flipping ofσ_1 without having to change the regional stress field.

关键词： Hydrodynamics Fluid-structural relationship Gold deposit Fluid inclusion planes Microstructural Subhorizontal veins

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象牙海岸Issia地区铌钽砂矿的研究(英文)

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大地构造与成矿学 2008年第2期32卷 195-211页

作者： Benjamin A ALLOU Huanzhang LU Jayanta GUHA Jacques CARIGNAN centre d＇études sur les ressources minérales Université du Quebec à Chicoutimi 555 Bd de l＇ Université Chicoutimi Québec Canada G7H2B1 Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 Guangdong China

在西非的象牙海岸Issia地区分布着许多铌钽矿床,包括原生矿和砂矿。原生矿产在分带很好的伟晶岩中。这个地区发育着许多花岗岩和花岗伟晶岩。伟晶岩可分为:(1)分异不好的伟晶岩,无矿化;(2)含Be伟晶岩,分带较好,见绿柱石;(3)含Be-Nb-Ta... 详细信息

在西非的象牙海岸Issia地区分布着许多铌钽矿床,包括原生矿和砂矿。原生矿产在分带很好的伟晶岩中。这个地区发育着许多花岗岩和花岗伟晶岩。伟晶岩可分为:(1)分异不好的伟晶岩,无矿化;(2)含Be伟晶岩,分带较好,见绿柱石;(3)含Be-Nb-Ta的伟晶岩,分带很好,是矿体;(4)Be-Nb-Ta-Li伟晶岩,分带很好,是矿体。除了10多个原生矿外,还有许多砂矿。砂矿有两种类型:一种近原生矿的坡积砂矿,另一种是经河流冲刷搬运后的冲积砂矿。我们选择了Etienne-Meguhe砂矿作为近原生矿的坡积砂矿的代表,Bemadi矿作为河流冲积型的砂矿的代表,对这两种类型的砂矿的风化、搬运、沉积机理进行了比较研究。研究发现不同的搬运距离和搬运模式对铌钽砂矿的主要矿物——铌钽铁矿的化学性质没有什么影响,而其物理形态则发生了变化。坡积型砂矿的铌钽铁矿常与石英、长石等矿物连生,其颗粒大小与原生的Nb-Ta伟晶岩中的铌钽铁矿一致;经河流冲积而形成的砂矿中,铌钽铁矿颗粒变小、轮廓变得圆滑,几乎无连生矿物,但矿体集中,常在河流的冲积扇中分布,易开采。

关键词：铌钽砂矿坡积砂矿冲积砂矿象牙海岸

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Water quality in forest and village ponds in Burkina Faso(western Africa)

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Journal of Forestry Research 2017年第5期28卷 1039-1048页

作者： Bilass Zongo Frdric Zongo Aboubacar Toguyeni Joseph I.Boussim Laboratoire de Biologie et Ecologie Vgtales Universit de Ouagadougou Unit de Recherche Aquaculture et Biodiversit Aquatique Laboratoire d'Etude et de Recherche sur les ressources Naturelles et les Sciences Environnementales Universit Polytechnique de Bobo-Dioulasso

Forest ecosystems help conserve the quality of water resources in aquatic habitats. The conservation of biological diversity in aquatic and terrestrial ecosystems remains a communal concern. Aquatic ecosystems and resources are vulnerable but can be preserved and protected by forests. In sub-Saharan regions of Africa, water from ecosystems such as ponds still play important role in the livelihood of local populations. Water from temporary ponds is used by local populations for multiple needs; however, in this part of the world, the population is increasing, thus increasing human needs and activities and land use in the region. Land-use changes lead to deforestation, land degradation and the decline in freshwater, affecting human health and well-being. Forest degradation leads to the decline in ecosystem goods and services, particularly those related to watersheds. This study conducted in eastern Burkina Faso aimed to assess water quality of temporary ponds in protected forest areas (reserves) and surrounding villages. It was conducted in 61 temporary ponds where physical, chemical and biological variables were measured, such as water surface area, depth, transparency, macrophyte cover, pH, dissolved O2, conductivity, nutrient concentrations and algae biomass. The results showed that at p surface area (p = 0.02), depth (p = 0.00), nutrient content (p = 0.00), and algae biomass (p = 0.04) were significantly higher outside reserves than inside reserves. In contrast, macrophyte cover (mean cover percentages 53 vs. 44.5%) and water transparency (p = 0.02) were higher inside reserves. The variations in conductivity and pH were not significant. All trends showed the influences of human activities on water characteristics and the role forests and land cover had in preventing negative human impacts and disturbance of temporary ponds. Forests and land cover are important to water quality conservation and algae biomass regulation in temporary ponds. Prot

关键词： Ecosystem services Pond water Reserves Variables Western Africa

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A Narrative Review Unravelling the Historical Roots of Myths surrounding Hypnosis and discerning Facts

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Psycho-Oncologie 2023年第4期17卷 215-224页

作者： dali Geagea Institut centre de recherche sur les brûlures et les traumatismes des enfants Universitéde QueenslandSouth Brisbane4101Australie

Hypnosis,one of the earliest mind-body treatments,has been the subject of renewed interest in the last decade with research indicating its effectiveness for varied physiological and psychological ailments including pain,distress,and psychosomatic ***,the adoption and acceptance of hypnosis are still hindered by myths and misconceptions that prevail among the general public and *** their significant role in promoting the successful delivery and acceptance of interventions,informing clinicians about hypnosis is crucial to promote balanced views,and thereby the adoption of this intervention when *** narrative review traces the historical roots of myths surrounding hypnosis,while unravelling related misconceptions that have impeded its adoption in clinical and research *** hope that this review enhances the general public’s views and clinicians’understanding of hypnosis in historical,theoretical and research contexts to promote its adoption in research and clinical settings and steer research toward an evidence-based practice of hypnosis.

关键词： Hypnosis myths facts review history

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Effects of glutamine supplementation on gut barrier,glutathione content and acute phase response in malnourished rats during inflammatory shock

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World Journal of Gastroenterology 2007年第20期13卷 2833-2840页

作者： Liliana Belmonte Mose Co■ffier Florence Le Pessot Olga Miralles-Barrachina Martine Hiron Antony Leplingard Jean-Franois Lemeland Bernadette Hecketsweiler Maryvonne daveau Philippe ducrotté Pierre déchelotte Appareil digestif Environnement Nutrition ADEN EA3234Institut Hospitalo-Universitaire de Recherche Biomédicale and Institut Fédératif de Recherches Multidisciplinaires sur les PeptidesFaculté de Médecine-PharmacieRouenFrance Service d’Anatomie Pathologique Centre Hospitalier UniversitaireRouenFrance INSERM unit 519 Institut Hospitalo-Universitaire de Recherche Biomédicale and Institut Fédératif de Recherches Multidisciplinaires sur les PeptidesFaculté de Médecine-PharmacieRouenFrance Groupe de Recherche sur les Antimicrobiens et les Microorganismes GRAM EA2656Institut Hospitalo-Universitaire de Recherche Biomédicale and Institut Fédératif de Recherches Multidisciplinaires sur les PeptidesFaculté de Médecine-PharmacieRouenFrance

AIM: To evaluate the effect of glutamine on intestinal mucosa integrity,glutathione stores and acute phase response in protein-depleted rats during an inflammatory shock. METHOdS: Plasma acute phase proteins (APP),jejunal APP mRNA levels,liver and jejunal glutathione concentrations were measured before and one,three and seven days after turpentine injection in 4 groups of control,protein-restricted,protein-restricted rats supplemented with glutamine or protein powder. Bacterial translocation in mesenteric lymph nodes and intestinal morphology were also assessed. RESULTS: Protein deprivation and turpentine injection significantly reduced jejunal villus height,and crypt depths. Mucosal glutathione concentration significantly decreased in protein-restricted rats. Before turpentine oil,glutamine supplementation restored villus heights and glutathione concentration (3.24 ± 1.05 vs 1.72 ± 0.46 μmol/g tissue,P d low. Glutamine markedly increased jejunal α1-acid glycoprotein mRNA level after turpentine oil but did not affect its plasma concentration. Bacterial translocation in protein-restricted rats was not prevented by glutamine or protein powder supplementation. CONCLUSION: Glutamine restored gut glutathione stores and villus heights in malnourished rats but had no preventive effect on bacterial translocation in our model.

关键词： Acute phase response Glutamine Glutathione Intestine Malnutrition

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Genome-wide differences in hepatitis C-vs alcoholism-associated hepatocellular carcinoma

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World Journal of Gastroenterology 2008年第11期14卷 1749-1758页

作者： Céline derambure Cédric Coulouarn Frédérique Caillot Romain daveau Martine Hiron Michel Scotte Arnaud Franois Celia duclos Odile Goria Marie Gueudin Catherine Cavard Benoit Terris Maryvonne daveau Jean-Philippe Salier Inserm Unité519 and Institut Fédératif de Recherches Multidisciplinaires sur les Peptides Facultéde Médecine-PharmacieRouenFrance Inserm Unité519 and Institut Fédératif de Recherches Multidisciplinaires sur les Peptides Facultéde Médecine-PharmacieRouenFrance Service de Chirurgie Générale et DigestiveCentre Hospitalier UniversitaireRouenFrance département de Pathologie Centre Hospitalier UniversitaireRouenFrance Inserm Unité519 and Institut Fédératif de Recherches Multidisciplinaires sur les Peptides Facultéde Médecine-PharmacieRouenFrance Service d'Hépato-gastro-enterologieCentre Hospitalier UniversitaireRouenFrance Laboratoire de Virologie and UPRES EA 2646 Centre Hospitalier UniversitaireRouenFrance Inserm Unité567 CNRS UMR 8104 UniversitéParis 5Département GDPMInstitut CochinParis France

AIM:To look at a comprehensive picture of etiology- dependent gene abnormalities in hepatocellular carcinoma in Western Europe. METHOdS:With a liver-oriented microarray,transcript levels were compared in nodules and cirrhosis from a training set of patients with hepatocellular carcinoma (alcoholism,12;hepatitis C,10)and 5 *** or tight selection of informative transcripts with an abnormal abundance was statistically valid and the tightly selected transcripts were next quantified by qRTPCR in the nodules from our training set(12+10) and a test set(6+7). RESULTS:A selection of 475 transcripts pointed to significant gene over-representation on chromosome 8 (alcoholism)or-2(hepatitis C)and ontology indicated a predominant inflammatory response(alcoholism)or changes in cell cycle regulation,transcription factors and interferon responsiveness(hepatitis C).A stringent selection of 23 transcripts whose differences betweenetiologies were significant in nodules but not in cirrhotic tissue indicated that the above dysregulations take place in tumor but not in the surrounding *** 23 transcripts separated our test set according to etiologies. The inflammation-associated transcripts pointed to limited alterations of free iron metabolism in alcoholic vs hepatitis C tumors. CONCLUSION:Etiology-specific abnormalities(chromo- some preference;differences in transcriptomes and related functions)have been identified in hepatocellular carcinoma driven by alcoholism or hepatitis *** may open novel avenues for differential therapies in this disease.

关键词： Alcoholism Chromosome Cirrhosis Hepatitis C Transcriptomes Protein function

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LANd-USE FACTORS IN HOME-BASEd TRIP PURPOSES:A GEOGRAPHICAL ANALYSIS OF URBAN TRANSPORTATION IN SHANGHAI

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Journal of Geographical Sciences 1992年第1期 17-28页

作者： Claude Comtois dpartement de gographie centre d’tudes de l’Asie de l’Est centre de recherche sur les transports Universit de Montral C.P.6128succ.AMontral (Quebec)Canada H3C 3J7

A wide variety of transportation modes are utilized in home-based trip purposes in *** is the contention of this paper that land-use factors,interacting with the home-based trips of each transportation mode,are the predominant causes of modal *** paper is arranged in the following ***,the Shanghai land-use/transport context is ***,the Shanghai urban transport system is ***,an evaluation of the interrelationships between land-use and urban transport is ***,recent planning decisions in Shanghai with regard to the adoption of elements of an open market economy are *** paper demonstrates that land-use discontinuities in commuting data reflect actual trip-making *** factors(distance,density,distribution and changes)combine to produce four transportation factors(very short trip length,land-use pattern influences on the transit system,modal split,and business activities which generate high bicycle movement).The paper concludes on possible recommendations to update transport survey activities.

关键词： transport geography modal split land-use Shanghai

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FINdING THE STRICTLY LOCAL ANd ε-GLOBAL minIMIZERS OF CONCAVE minIMIZATION WITH LINEAR CONSTRAINTS

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Journal of Computational Mathematics 1997年第4期15卷 327-334页

作者： Patrice Marcotte (centre de Recherche sur les Transports, Universit de Montr al, Queb c, Canada)Shi-quan Wu (Probability Laboratory, Institute of Applied Mathematics, Chinese Academy of Sciences,Beijing, China) centre de Recherche sur les Transports Université de Montréal Que. Canada Probability Laboratory Institute of Applied Mathematics Chinese Academy of Sciences Beijing China

This paper considers the concave minimization problem with linear constrailits,proposes a technique which may avoid the unsuitable Karush-Kuhn-Tucker poiats,then combines this technique with nank-Wolfe method and simplex method to form a pivoting method which can determine a strictly local minimizer of the problem in a finite number of iterations. Basing on strictly local minimizers, a new cutting plane method is proposed. Under some mild conditions, the new cutting plane method is proved to be finitely terminated at an θ-global minimizer of the problem.

关键词： NLP GLOBAL minIMIZERS OF CONCAVE minIMIZATION WITH LINEAR CONSTRAINTS Pro PI FINdING THE STRICTLY LOCAL ANd

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Transient and etiology-related transcription regulation in cirrhosis prior to hepatocellular carcinoma occurrence

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World Journal of Gastroenterology 2009年第3期15卷 300-309页

作者： Frédérique Caillot Céline derambure Paulette Bioulac-Sage Arnaud Franois Michel Scotte Odile Goria Martine Hiron Maryvonne daveau Jean-Philippe Salier Inserm Unité 905 and Institut Fédératif de Recherches Multidisciplinaires sur les Peptides Faculté de Médecine-Pharmacie76183 RouenFrance Service d'Anatomie Pathologique Centre Hospitalier Universitaireand Inserm U88933000 BordeauxFrance département Pathologie Centre Hospitalier Universitaire76183 RouenFrance Service de Chirurgie Générale et digestive Centre Hospitalier Universitaire76183 RouenFrance Service d'Hépato-gastro-entérologie Centre Hospitalier Universitaire76183 RouenFrance

AIM： To search for transcription dysregulation that could （1） differentiate hepatocellular carcinoma （HCC）-free from HCC-related cirrhosis （2） differentiate HCC-free cirrhosis related to HCV from that related to alcohol intake. METHOdS： Using microarray analysis, we compared transcript levels in HCC-free cirrhosis （alcoholism： 7; hepatitis C： 7）, HCC-associated cirrhosis （alcoholism： 10; hepatitis C： 10） and eight control livers. The identified transcripts were validated by qRT-PCR in an independent cohort of 45 samples （20 HCC-free cirrhosis; 15 HCC-associated cirrhosis and 10 control livers）. We also confirmed our results by ***： In HCC-free livers, we identified 70transcripts which differentiated between alcoholicrelated-cirrhosis, HCV-related cirrhosis and control livers. They mainly corresponded to down-regulation. dysregulation of Signal Transduction and Activator of Transcription-3 （STAT-3） was found along with related changes in STAT-3 targets which occurred in an etiology-dependent fashion in HCC-free cirrhosis. In contrast, in HCC, such transcription dysregulations were not observed. CONCLUSION： We report that transcriptional dysregulations exist in HCC-free cirrhosis, are transiently observed prior to detectable HCC onset and may be appear like markers from cirrhosis to HCC transition.

关键词： Liver Pathology Alcoholism Hepatitis Cvirus Gene expression Carcinogenesis

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