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Oil charging history and pathways of the Ordovician carbonate reservoir in the tuoputai region,tarim Basin,NW China

Petroleum Science 2017年第4期14卷 662-675页

作者： Rong-Hui Fang Mei-Jun Li Hai-tao Lü t.-G.Wang Yuan Yuan Yong-Li Liu Zhi-Yong Ni State Key Laboratory of Petroleum Resources and Prospecting College of GeosciencesChina University of PetroleumBeijing 102249China Exploration and Development Research Institute Northwest Oilfield Branch CorporationSINOPECUrumqi 830011XinjiangChina Research Institute of Shaanxi Yanchang Petroleum(Group)Co.Ltd Xi'an 710075ShaanxiChina

Geochemical analysis of 64 oils sampled from an Ordovician carbonate reservoir in the tuoputai region was undertaken to study the composition of molecular markers. All the oils have similar geochemical characteristics and belong to a single oil family. they are presumed to derive from the same source kitchen and have similar oil charging history. A histogram of homogenization temperatures(th) of aqueous inclusions in reservoir rocks shows a bimodal distribution pattern, indicating that the Ordovician reservoir has been charged twice. Coupling the measured th(°C) with the burial and geothermal histories reconstructed using 1D basin modeling, we relate the homogenization temperature to the relevant geological ages: i.e.,425–412 and 9–4 Ma, corresponding to the Middle to Late Silurian and the Miocene to Pliocene, respectively. the oil filling orientation and pathways are traced using molecular indicators related to alkyldibenzothiophenes and benzo[b]naphthothiophenes. the oil charging orientation is from south to north generally. It can be predicted that the Ordovician reservoirs were sourced from a kitchen located to the south of the tuoputai region, most probably between the Awati and Manjiaer Depressions. traps located in the southern side of the tuoputai region, along the oil charging pathways, should therefore be preferred oil exploration targets.

关键词： Oil population Oil charging events Fluid inclusion 1D numerical modeling Oil filling pathway

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In-Flight Formation of Nano-Crystalline titanium Dioxide Powder in a Plasma Jet and Its Characterization

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Plasma Science and technology 2010年第4期12卷 426-432页

作者： P. V. ANANtHAPADMANABHAN M. VIJAY t. K. tHIYAGARAJAN K. P. SREEKUMAR V. SELVARAJAN Jiaguo YU Shengwei LIU Laser & Plasma technology Division Bhabha Atomic Research Centre Mumbai-400085 India Department of Physics Bharathiar University Coimbatore 641046 India State Key Laboratory of Advanced technology for Material Synthesis and Processing Wuhan University of technology Wuhan 430070 China

Nanocrystalline titanium dioxide powder was synthesized by in-flight oxidation of titanium dihydride （tiH2） powder in a thermal plasma jet. tiH2 powder was injected into the thermal plasma jet and allowed to react with oxygen injected downstream the jet. Characteriza- tion of the powder by various analytical tools indicated that the powder consisted of nano-sized titanium dioxide particles consisting predominantly of the anatase phase. It is suggested that the thermo-chemistry of the oxidation process contributes significantly to the formation of nano-sized titania. the large energy released during the oxidation process dissociates the tiO2 particles into tiO（g） and titanium vapour, which recombine downstream with oxygen and form nano particles of tiO2.

关键词： nanostructures titanium dioxide arc plasma synthesis reactive plasma pro- cessing surface properties

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Assessment of Sensitization in AISI 304 Stainless Steel by Nonlinear Ultrasonic Method

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Acta Metallurgica Sinica(English Letters) 2013年第5期26卷 545-552页

作者： Saju t.Abraham S.K.Albert C.R.Das N.Parvathavarthini B.Venkatraman R.S.Mini K.Balasubramaniam Quality Assurance Division Indira Gandhi Centre for Atomic Research Department of Mechanical Engineering Government Engineering College Department of Mechanical Engineering Indian Institute of Technology

A nonlinear ultrasonic technique has been developed to evaluate sensitization in type 304 stainless steel. In order to achieve diferent degree of sensitization（DOS）, specimens have been subjected to heat treatment at 675℃ at varying soaking time（0.5, 1.0, 2.0, 3.0 and 4.0 h）. Heat treated specimens were subjected to intergranular corrosion tests as per AStM standards A262 and G108. Sensitization in longer soaked material has been confirmed through ditch microstructures, cracks on the bend tested specimens and higher degree of sensitization. Nonlinear ultrasonic studies showed variation in the nonlinearity parameter with soaking time which also confirms sensitization. A good correlation was observed between the degree of sensitization measured by the electrochemical potentiokinetic reactivation test and the ultrasonic nonlinearity *** study clearly demonstrated that nonlinear ultrasonic technique can be used as a potential technique for non-destructive characterization of sensitization in austenitic stainless steel.

关键词： Austenitic stainless steel Degree of sensitization Intergranular corrosion Nonlinear ultrasonics

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Nano-fried-eggs： Structural, optical, and magnetic characterization of physically prepared iron-silver nanoparticles

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Nano Research 2018年第11期11卷 6074-6085页

作者： Julien Ramade Nicolas troc Olivier Boisron Michel Pellarin Marie-Ange Lebault Emmanuel Cottancin Vitor t. A. Oiko Rafael Cabreira Gomes Varlei Rodrigues Matthias Hillenkamp Univ. Lyon Universitd Claude Bernard Lyon I CNRS UMR5306 Institut Lumiee Matiee t=-69622 Villeurbanne France Instituto de F[sica Gleb Wataghin UNICAMP CP 6165 13083-970 Campinas SP Brazil

the prospect of combining both magnetic and plasmonic properties in a single nanoparticle promises both valuable insights on the properties of such systems from a fundamental viewpoint and numerous possibilities for technological applications. However, the combination of two of the most prominent metallic candidates—iron and silver—has presented numerous experimental difficulties because their thermodynamic properties impede miscibility and even coalescence. Herein, we present the thorough characterization of physically prepared Fe50Ag50 nanoparticles embedded in carbon and silica matrices via electron microscopy, optical spectroscopy, magnetometry and synchrotron-based X-ray spectroscopy. Iron and silver segregate completely into structures resembling fried eggs, with a nearly spherical, crystallized silver part surrounded by an amorphous structure of iron carbide or oxide, depending on the environment of the particles. Consequently, the particles exhibit both plasmonic absorption corresponding to the silver nanospheres in an oxide environment and a reduced but measurable magnetic response. the suitability of such nanoparticles for technological applications is discussed from the viewpoint of their high chemical reactivity with their environment.

关键词： nanoalloy bimetallic nanoparticles iron silver FeAg optical spectroscopy magnetometry

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Determination of Velocity and Radius of Supernova Remnant after 1000 yrs of Explosion

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International Journal of Astronomy and Astrophysics 2015年第2期5卷 125-132页

作者： Baha t. Chiad Lana t. Ali Abdhreda S. Hassani Department of Physics College of Science University of Baghdad Baghdad Iraq Department of Astronomy and Space College of Science University of Baghdad Baghdad Iraq Department of Astronomy and Space College of Science University of Baghdad Baghdad Iraq

Supernova explosions are described as very violent events which transfer a significant amount of energy to interstellar media and are responsible for a large variety of physical processes. this study does not discuss the actual explosion mechanisms but follows the behavior of the dynamical evolution of some selected type I and type II supernova remnant and particularly after a thousand years from their explosion and shows how the density of the medium affects the evolution and the lifetime of each remnant. By studying such behaviors, a simplified model has been proposed here for the velocity and radius of the remnant after thousand years of explosion that depends only on the density of the medium and age of the remnant. It has been found that all types of supernova remnants have similar behaviors after a thousand years from their explosion despite their origin formation. Moreover, it is demonstrated that, when those selected remnants have entered or will enter into their radiative phase, an idea on their physical properties will be obtained.

关键词： Supernova Supernova remnant Radiative Phase

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Patterns of in-hospital mortality and bleeding complications following PCI for very elderly patients： insights from the Dartmouth Dynamic Registry

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Journal of Geriatric Cardiology 2018年第2期15卷 131-136页

作者： Shawn X Li Hannah I Chaudry Jiyong Lee theodore B Curran Vishesh Kumar Kendrew K Wong Bruce W Andrus James t DeVries Dartmouth Geisel School of Medicine Hanover NH USA Department of Internal Medicine Dartmouth-Hitcheock Medical Center Lebanon NH USA Section of Cardiovascular Medicine Dartmouth-Hitchcock Medical Center Lebanon NH USA

Background Very elderly patients （age 〉 85 years） are a rapidly increasing segment of the population. As a group, they experience high rates of in-hospital mortality and bleeding complications following percutaneous coronary intervention （PCI）. However, the relationship between bleeding and mortality in the very elderly is unknown. Methods Retrospective review was performed on 17,378 consecutive PCI procedures from 2000 to 2015 at Dartmouth-Hitchcock Medical Center. Incidence of bleeding during the index PCI admission （bleeding requiring transfusion, access site hematoma 〉 5 cm, pseudoaneurysm, and retroperitoneal bleed） and in-hospital mortality were reported for four age groups （〈 65 years, 65-74 years, 75-84 years, and ≥ 85 years）. the mortality of patients who suffered bleeding complications and those who did not was calculated and multivariate analysis was performed for in-hospital mortality. Lastly, known predictors of bleeding were compared between patients age 〈 85 years and age ≥85 years. Results Of 17,378 patients studied, 1019 （5.9%） experienced bleeding and 369 （2.1%） died in-hospital following PCI. Incidence of bleeding and in-hospital mortality increased monotonically with increasing age （mortality： 0.94%, 2.27%, 4.24% and 4.58%; bleeding： 3.96%, 6.62%, 10.68% and 13.99% for ages 〈 65, 65-4, 75-84 and ≥ 85 years, respectively）. On multivariate analysis, bleeding was associated with increased mortality for all age groups except patients age ≥85 years [odds ratio （95% CI）： age 〈 65 years, 3.65 （1.99-6.74）; age 65-74 years, 2.83 （1.62-4.94）; age 75-84 years, 3.86 （2.56-5.82）, age ≥ 85 years 1.39 （0.49-3.95）]. Conclusions Bleeding and mortality following PCI increase with increasing age. For the very elderly, despite high rates of bleeding, bleeding is no longer predictive of in-hospital mortality following PCI.

关键词： Complications In-hospital mortality Percutaneous coronary intervention the elderly

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the Coolibility of Melt Pool in PWR Lower Head - Results of LIVE Experiments

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Journal of Energy and Power Engineering 2010年第3期4卷 15-21页

作者： X. Gaus-Liu A. Miassoedov t. Cron t. Wenz Karlsruhe Institute Of technology Campus North 76344 Eggenstein-Leopoldshafen Germany

the LIVE （Late In-Vessel Phase Experiments） test program investigates in-vessel melt pool behaviour and cooling strategies for in-vessel corium retention during severe accidents in light water reactors （LWR）. the main part of the LIVE facility is a 1：5 scaled semi-spherical lower head of a typical pressurized water reactor. Up to now, LIVE experiments have been performed in different initial external cooling conditions, melt volumes and internal heat generations. At present the well-known simulant material KNO3-NaNO3 in non-eutectic composition （80 mole% KNO3-20 mole% NaNO3） and in eutectic composition （50 mole% KNO3- 50 mole% NaNO3） is used in the live program. the 3D heat flux distribution through vessel wall, melt pool temperature, crust thickness and the pool melt composition can be measured or determined. Extensive results have been obtained concerning the melt pool thermal hydraulic behaviour in transient and in steady state conditions.

关键词： Core melt LWR in vessel corium retention PWR lower head

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Vertebrate pesticide risk assessment by indigenous communities in New Zealand

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Integrative Zoology 2010年第1期5卷 37-43页

作者： Shaun C.OGILVIE James M.AtARIA James WAIWAI James DOHERtY Aroha MILLER James G.ROSS Charles t.EASON Ecology Department Lincoln UniversityLincolnCanterburyNew Zealand Landcare Research LincolnCanterburyNew Zealand Lake Waikaremoana Hapu Restoration trust TuaiNew Zealand tuhoe tuawhenua trust MuruparaNew Zealand

In New Zealand,the vertebrate pesticide sodium fluoroacetate(Compound 1080)is aerially applied in baits for control of the brush-tailed possum trichosurus vulpecula(Kerr,1792).Maori,the indigenous people of New Zealand,have raised concerns about 1080 impacts on culturally-important ***,we outline two steps taken to help Maori assess 1080 ***,field research was undertaken to determine if naturally-occurring plants utilized by a Maori community for food and medicine would take up 1080 from *** baits were placed at the base of individual plants of two species,pikopiko(Asplenium bulbiferum)and karamuramu(Coprosma robusta).Plants were sampled at various times up to 56 days,and samples were analyzed for 1080 *** 1080 was detected in any of the pikopiko samples,whereas 1080 was detected in karamuramu,at a maximum concentration of 5 ppb after seven days,and 2.5 ppb after 14 *** concentration decreased to 0 at 28 days,indicating that 1080 was not *** results of the present study suggest there is negligible risk of humans being poisoned by consum-ing plants that have taken up 1080 from *** allay community concerns that minute concentrations of 1080 might influence the medicinal properties of plants,it is suggested that a withholding period of 30 days after 1080 control operations could be ***,after further consultation we undertook a review of the scientific literature relating to 1080 impacts on additional non-target species of cultural importance to *** information was presented on an interactive foodweb database that allowed the collection and presentation of a large volume of complex information about 1080 in a holistic and pictorial *** database was presented to many Maori communities throughout New Zealand,and feedback was overwhelmingly *** database is likely to play a key role in informing these communities about 1080,and is seen as an important new tool to help these communities

关键词： 1080 indigenous communities Maori risk assessment sodium fluoroacetate

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Exact Solution for Pressure Driven Flow of two Immiscible Phan-thien-tanner Fluids in a Pipe

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Open Journal of Fluid Dynamics 2018年第4期8卷 378-391页

作者： A. M. Siddiqui A. Walait t. Allison t. Haroon Deparment of Mathematics Pennsylvania State University York Campus York PA USA Department of Mathematics Riphah International University Islamabad Campus Pakistan

this paper provides the exact solutions for the fully developed two layer pressure driven flows of incompressible Phan-thien-tanner fluids in a horizontal cylindrical pipe. Exact equations are formulated and solved for important kinematic properties, such as, velocity profiles, normal and shear stresses, total volume fluxes through a circular cross-section and average velocities. Graphical results are provided and discussed for the different flow parameters. A comparison of Upper Convected Maxwell (UCM), Linear Phan-thien-tanner (LPtt) and Exponential Phan-thien-tanner (EPtt) shows that UCM is a low viscosity fluid as compared to LPtt, and EPtt and LPtt is lighter than EPtt.

关键词： Exact Solution two-Layer Flow Ptt Fluids

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the integral equations of Compton Scatter tomography

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Open Journal of Applied Sciences 2012年第4期2卷 53-56页

作者： M. K. Nguyen t. t. truong Equipes traitement de l’Information et Systèmes (EtIS) UMR CNRS 8051/ ENSEA / University of Cergy-Pontoise F-95014 Cergy-Pontoise France Laboratoire de Physique théorique et Modélisation (LPtM) UMR CNRS 8089 / University of Cergy-Pontoise F-95302 Cergy-Pontoise

two new Compton Scatter tomography modalities, which are aimed at imaging hidden structures in bulk matter for industrial non-destructive control (or testing) and for medical diagnostics are shown to be based on the solutions of a special class of Chebyshev integral transforms. Besides their remarkable analytic properties, they can be inverted by existing methods which lend themselves nicely to numerical treatment and provide convergent, stable and fast computation algorithms. the existence of explicit inversion formulas implies that viable new imaging techniques can be developed, which may take over the current ones in a near future.

关键词： Integral transforms Radon transforms Compton scatter imaging Non-destructive testing Medical imaging.

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