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Late Quaternary clay minerals off Middle Vietnam in the western South China Sea: Implications for source analysis and East Asian monsoon evolution

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Science China Earth Sciences 2007年第11期50卷 1674-1684页

作者： Christophe colin Laboratoire IDES UMR 8148 CNRS Université de Paris XI Orsay 91405 France

High-resolution clay mineral records combined with oxygen isotopic stratigraphy over the past 450 ka during late Quaternary from Core MD05-2901 off Middle Vietnam in the western South China Sea are re-ported to reconstruct a history of East Asian monsoon evolution. Variations in Illite, chlorite, and kaolinite contents indicate a strong glacial-interglacial cyclicity, while changes in smectite content present a higher frequency cyclicity. the provenance analysis indicates a mixture of individual clay minerals from various sources surrounding the South China Sea. Smectite derived mainly from the Sunda shelf and its major source area of the Indonesian islands. Illite and chlorite originated mainly from the Mekong and Red rivers. Kaolinite was provided mainly by the Pearl River. Spectral analysis of the kaolin-ite/(illite+chlorite) ratio displays a strong eccentricity period of 100 ka, implying the ice sheet-forced win-ter monsoon evolution; whereas higher frequency changes in the smectite content show an ice sheet-forced obliquity period of 41 ka, and precession periods of 23 and 19 ka and a semi-precession period of 13 ka as well, implying the tropical-forced summer monsoon evolution. the winter monsoon evolution is generally in coherence with the glacial-interglacial cyclicity, with intensified winter monsoon winds during glacials and weakened winter monsoon winds during interglacials; whereas the summer monsoon evolution provides an almost linear response to the summer insolation of low latitude in the Northern Hemisphere, with strengthened summer monsoon during higher insolation and weakened summer monsoon during lower insolation. the result suggests that the high-latitude ice sheet and low-latitude tropical factor could drive the late Quaternary evolution of East Asian winter and summer monsoons, respectively, implying their diplex and self-contained forcing mechanism.

关键词： clay minerals,provenance,East Asian monsoon,late Quaternary,Middle Vietnam,South China Sea

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Cybertaxonomy to accomplish big things in aphid systematics

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Insect Science 2014年第3期21卷 392-399页

作者： colin Favret Department of Biological Sciences University of Montreal Biodiversity Centre 4101 rue Sherbrooke est Montreal Quebec Canada

Biodiversity sciences have progressed at such a pace that the taxonomic community has been unable to grow concomitantly to keep up with the influx of biologicaldata. this ＂taxonomic impediment＂ has led some to suggest that taxonomy is no longer pertinent and to the development of methodologies that circumvent the taxonomic *** article does not seek to argue for the importance of taxonomy but rather is a call to the aphid taxonomy community to rise to the challenge by dramatically increasing the volume and comprehensiveness of its output without sacrificing quality. Recent informatics technology allows us to mobilize the 2 most important aphid taxonomy resources： expertsand specimens, both distributed globally. ＂Cyberspecimens,＂ museum specimens digitally rendered at a resolution sufficient for remote identification, and open ＂cybertaxonomic＂tools will allow the international aphid taxonomic community to carry out large, ambitious, projects. the global aphid cybertaxonomy proposed here will serve not only the ends ofresearch aphidologists, but also provide a model for other taxonomic communities to adapt and adopt as we confront both the taxonomic impediment and the taxonomic naysayers.

关键词： Aphididae collection cyberspecimen database museum specimen

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Perspective of mixed matrix membranes for carbon capture

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Frontiers of Chemical Science and Engineering 2020年第3期14卷 460-469页

作者： Shinji Kanehashi colin AScholes Graduate School of Engineering Tokyo University of Agriculture and TechnologyTokyo184-8588Japan Peter Cook Centre for Carbon Capture and Storage Research Department of Chemical EngineeringThe University of MelbourneMelbourne 3010Australia

Polymeric membrane-based gas separation has found wide applications in industry,such as carbon capture,hydrogen recovery,natural gas sweetening,as well as oxygen *** gas separation membranes are required to have high gas permeability and selectivity,while being cost-effective to *** matrix membranes(MMMs)have a composite structure that consists of polymers and fillers,therefore featuring the advantages of both *** effort has been made to improve the gas separation performance of MMMs as well as general membrane properties,such as mechanical strength and thermal *** perspective describes potential use of MMMs for carbon capture applications,explores their limitations in fabrication and methods to overcome them,and addresses their performance under industry gas conditions.

关键词： membranes polymeric mixed matrix impurities

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A plant-based diet and animal protein： questioning dietary fat and consideringanimal protein as the main cause of heart disease

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Journal of Geriatric Cardiology 2017年第5期14卷 331-337页

作者： thomas colin Campbell Emeritus of Nutritional Biochemistry Cornell University 8 Fiddlers Green Lansing NY 14882 USA.

Dietary ＇fat＇（e.g., oils, triglycerides, cholesterol） haslong been considered a major risk factor for cardiovascularand related diseases. As reviewed elsewhere,Vogel in1847 identified cholesterol as a major compo... 详细信息

关键词： Cardiovascular disease Cholesterol Dietary protein

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Eventual Positivity of Hermitian Algebraic Functions and Associated Integral Operators

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Chinese Annals of Mathematics,Series B 2020年第6期41卷 967-988页

作者： colin tAN Wing-Keung tO Department of Statistics&Applied Probability National University of Singapore Current address:Science Mat hematics and TechnologySingapore University of Technology and Design8 Somapah RoadSingapore 487372 Department of Mathematics National University of SingaporeBlock S1710 Lower Kent Ridge RoadSingapore 119076

Quillen proved that repeated multiplication of the standard sesquilinear form to a positive Hermitian bihomogeneous polynomial eventually results in a sum of Hermitian squares,which was the first Hermitian analogue of Hilbert s seventeenth problem in the nondegenerate *** Catlin-D’Angelo generalized this positivstellensatz of Quillen to the case of Hermitian algebraic functions on holomorphic line bundles over compact complex manifolds by proving the eventual positivity of an associated integral *** arguments of Catlin-D’Angelo involve subtle asymptotic estimates of the Bergman *** this article,the authors give an elementary and geometric proof of the eventual positivity of this integral operator,thereby yielding another proof of the corresponding positivstellensatz.

关键词： Hermitian algebraic functions Integral operators Positivity

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Homological behavior of idempotent subalgebras and Ext algebras

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Science China Mathematics 2020年第2期63卷 309-320页

作者： colin Ingalls Charles Paquette School of Mathematics and Statistics Carleton UniversityOttawaON K1S 5E6Canada Department of Mathematics and Computer Science Royal Military College of CanadaKingstonON K7K 7B4Canada

Let A be a(left and right) Noetherian ring that is semiperfect. Let e be an idempotent of A and consider the ring Γ :=(1-e)A(1-e) and the semi-simple right A-module Se := e A/e rad A. In this paper, we investigate the relationship between the global dimensions of A and Γ, by using the homological properties of Se. More precisely, we consider the Yoneda ring Y(e) := Ext_A~*(Se, Se) of e. We prove that if Y(e) is Artinian of finite global dimension, then A has finite global dimension if and only if so does Γ. We also investigate the situation where both A and Γ have finite global dimension. When A is Koszul and finite dimensional, this implies that Y(e) has finite global dimension. We end the paper with a reduction technique to compute the Cartan determinant of Artin algebras. We prove that if Y(e) has finite global dimension, then the Cartan determinants of A and Γ coincide. this provides a new way to approach the long-standing Cartan determinant conjecture.

关键词： global dimension Noetherian ring semiperfect ring idempotent subalgebra Cartan determinant

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GREEN WAtER tECHNOLOGIES AND RESOURCE MANAGEMENt FOR WAtER SYStEM HEAt-tRANSFER APPLICAtIONS IN tHE BUILt ENVIRONMENt

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Journal of Green Building 2010年第1期5卷 56-67页

作者： colin Frayne Aquassurance Inc.156 Red Fox RunMaconGA 31210

INtRODUCtION In recent years it has become self-evident to many of us that we need to protect and restore our changing ***“environment”we are generally referring to our surroundings-our biophysical environment,which in earlier times meant the four classical elements,earth,fire,water,and wind,and later came to include the quintessence or the aether-air or *** we tend to refer more to the nitrogen,carbon,and hydrologic cycles.

关键词： environment. evident earth

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Mass transfer correlations for membrane gas-solvent contactors undergoing carbon dioxide desorption

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Chinese Journal of Chemical Engineering 2018年第11期26卷 2337-2343页

作者： colin A.Scholes Shufeng Shen Department of Chemical Engineering The University of Melbourne School of Chemical and Pharmaceutical Engineering Hebei University of Science and Technology

Membrane gas-solvent contactors are a hybrid technology combining solvent absorption with membrane gas separation, which demonstrates potential for CO_2 capture through the ability of the membrane to rigidly control the mass transfer area. Membrane contactors have been successfully demonstrated for CO_2 absorption, and there is strong research interest in using membrane contactors for the complimentary CO_2 desorption process to regenerate the solvent. However, understanding and modelling the various stages of mass transfer in the desorption process is less well-known, given the existing mass transfer correlations had been developed from absorption experiments. Hence, mass transfer correlations for membrane contactors are reviewed here, and their appropriateness for desorption analysed. this is achieved through simulating CO_2 desorption through a membrane contactor from loaded 30 wt% monoethanolamine solvent to enable comparison of the correlations. It was found that the most cited correlations by Yang and Cussler were valid for shell side parallel flow, while that of Kreith and Black was viable for shell side cross flow. A limitation of all of these correlations is that they assume single phase flow on both sides of the membrane; however, the high temperature of CO_2 desorption can lead to partial solvent vaporisation and hence two phases present on one side of the membrane contactor during desorption. A mass transfer correlation is established here for two phase parallel flow on the shell side of a membrane contactor, based on experimental results for three composite and one asymmetric hollow fibre membrane contactors stripping CO_2 from loaded MEA at 105–108 °C. this correlation is comparable to that reported in the literature for mass transfer in other two phase systems, but differs from the standard format for membrane contactors in terms of the exponent on the dimensionless Schmidt and Reynolds numbers.

关键词： Membrane Contactor Carbon dioxide Desorption two phases Mass transfer correlations

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towards Sustainable Flood Risk Management

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International Journal of Disaster Risk Science 2010年第1期1卷 33-43页

作者： colin Green Flood Hazard Research Centre Middlesex UniversityQueenswayEnfieldMiddlesex EN34SAU.K.

Sustainable development means doing more with less;this requires change from existing practices. We must make improvements and learn, in the face of those changes that are occurring because we have not delivered sustainable development up until now. So we seek to make changes in the context of changes. this paper focuses on the question of “how” we do more with less and develops the concept of adopting a systemic approach, recognizing that we are dealing with dynamic, highly interconnected systems.

关键词： Sustainable dealing Flood

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A road for a promising future for China＇s primates： the potential for restoration

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Zoological Research 2018年第4期39卷 244-248页

作者： colin A. Chapman Department of Anthropology McGill University Montreal Quebec H3A 2T7 Canada Wildlife Conservation Society Bronx New York 10460 USA Section of Social Systems Evolution Primate Research Institute Kyoto University Inuyama 484-8506 Japan

China is one of the most dynamic countries of the world and it shelters some amazing levels of biodiversity, including some very special primate species. However, primarily as a result of forest loss, most of which occurred in historical times, approximately 70% of China＇s primate species have less than 3 000 individuals. Here I evaluate one road for future conservation/development that could produce very positive gains for China＇s primates; namely forest restoration. I argue that for a large scale restoration project to be possible two conditions must be met; the right societal conditions must exist and the right knowledge must be in hand. this evaluation suggests that the restoration of native forest to support many of China＇s primates holds great potential to advance conservation goals and to promote primate population recovery.

关键词： Conservation Forest restoration Regeneration Primate population dynamics

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