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SUPERSONIC DUSTY-GAS FlOWS WITH KNUDSEN EFFECT IN INTERPHASE MOMENTUM EXCHANGE

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Acta Mechanica Sinica 2004年第5期20卷 465-470页

作者：王柏懿 A.N.OSIPTSOV l.A.EGOROVA V.I.SAKHAROV lNM Institute of MechanicsChinese Academy of SciencesBeijing 100080China Institute of Mechanics Moscow State UniversityMoscow 119899Russia

On the basis of the two-continuum model of dilute gas-solid suspensions,the dynamic behavior of inertial particles in supersonic dusty-gas flows past a blunt body is studied for moderate Reynolds numbers,when the Knudsen effect in the interphase momentum exchange is significant. The limits of the inertial particle deposition regime in the space of governing parameters are found numerically under the assumption of the slip and free-molecule flow regimes around *** a model problem,the flow structure is obtained for a supersonic dusty-gas point-source flow colliding with a hypersonic flow of pure *** calculations performed using the full lagrangian approach for the near-symmetry-axis region and the free-molecular flow regime around the particles reveal a multi-layer structure of the dispersed-phase density with a sharp accumulation of the particles in some thin regions between the bow and termination shock waves.

关键词： gas-solid suspension supersonic flow Knudsen effect particle inertia

Diagnosis of bile duct hepatocellular carcinoma thrombus without obvious intrahepatic mass

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World Journal of Gastroenterology 2010年第39期16卷 4998-5004页

作者： long XY li YX Wu W li l Cao J. Department of General Surgery Xiangya Hospital Central South University Changsha 410008 Hunan Province China. liyixiong6@***

AIM:To study the diagnosis of hepatocellular carcinoma(HCC)presenting as bile duct tumor thrombus with no detectable intrahepatic ***:Six patients with pathologically proven bile duct HCC thrombi but no intrahepatic mass demonstrated on the preoperative imaging or palpated intrahepatic mass during operative exploration,were *** clinical and imaging data were retrospectively *** major findings or signs on comprehensive imaging were correlated with the surgical and pathologic ***:Jaundice was the major clinical symptom of the *** elevated serum total bilirubin,direct bilirubin and alanine aminotransferase levels were in concordance with obstructive jaundice and the underlying liver *** the 6 patients showing evidence of viral hepatitis,5 were positive for serum alpha fetoprotein and carbohydrate antigen 19-9,and 1 was positive for serum carcinoembryonic *** patient was correctly diagnosed by *** main features of patients on comprehensive imaging were filling defects with cup-shaped ends of the bile duct,with large filling defects presenting as casting moulds in the expanded bile duct,hypervascular intraluminal nodules,debris or blood clots in the bile *** obvious circular thickening of the bile duct walls was ***:Even with no detectable intrahepatic tumor,bile duct HCC thrombus should be considered in patients predisposed to HCC,and some imaging signs are indicative of its diagnosis.

关键词： Hepatocellular carcinoma Obstructive jaundice Bile duct tumor thrombus Diagnosis Diagnostic imaging

Adding sweet sorghum juice into current dry-grind ethanol process for improving ethanol yields and water efficiency

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International Journal of Agricultural and Biological Engineering 2015年第2期8卷 97-103页

作者： Nana B Appiah-Nkansah Kaelin Saul William l Rooney Donghai Wang IGERT Trainee in Biorefining Kansas State UniversityManhattan KS 66506USA Department of Biological and Agricultural Engineering Kansas State UniversityManhattanKS 66506USA Department of Soil and Crop Science Texas A&M UniversityCollege StationTX 77843USA

Sweet sorghum is a promising energy crop due to its low fertilizer and water requirements,short growth period,and high biomass ***,the challenge for sweet sorghum as a feedstock for ethanol production is its short harvest period and the extreme instability of its juice,both of which make achieving a year-round production process *** way to solve this challenge and to meet the growing demand of bio-renewable ethanol is to incorporate sweet sorghum juice into the current dry-grind ethanol *** the dry-grind process,the whole grain kernel is milled and fermented to produce *** this study,sweet sorghum juice with varying grain sorghum flour contents was liquefied,saccharified,fermented,and distilled to produce *** yield from sweet sorghum juice with the optimum grain sorghum flour loading was about 28% higher than that from the conventional ethanol *** hydrolysis with this process could be reduced by 30 *** fermentation performance of sweet sorghum juice with grain flour using a raw starch hydrolyzing enzyme was also investigated,and ethanol yield was about 21% higher than that from the conventional *** innovative technology enabling ethanol production from sweet sorghum juice could improve ethanol yield,save energy,and significantly decrease water use in the current dry-grind ethanol process.

关键词： sweet sorghum biomass ethanol yield hydrolyzing time conversion efficiency

Zeolite-Catalyzed Thionation of Diphenyl-type Compounds

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Chinese Chemical letters 1997年第5期8卷 381-384页

作者： Jiang, W Wang, Ql Ma, YD Zuo, BJ Wang, l SHANDONG UNIV DEPT CHEMJINAN 250100PEOPLES R CHINA SHANDONG MED UNIV DEPT PHARMJINAN 250012PEOPLES R CHINA

The synthesis of phenothiazine and phenoxthine was performed very efficiently through the thionation of diphenylamine and diphenyl ether, respectively, with elemental sulfur by using hydrothermally treated HY zeolites... 详细信息

关键词： type Wang Zeolite-Catalyzed Thionation of Diphenyl-type Compounds

Transfusion transmitted virus infection in general populations and patients with various liver diseases in south China

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World Journal of Gastroenterology 2000年第5期6卷 738-741页

作者： Chen YP liang WF Zhang l He HT luo KX First Mil Med Univ Nanfang Hosp Dept Infect Dis Guangzhou 510515 Guangdong Provi Peoples R China

INTRODUCTIONAlthough several specific detecting methods hadbeen applied to determine the hepatitis virus,therewas a lot of cryptogenic hepatitis without anyknown hepatitis infectious *** of hepatitis G virus (HGV) (also knownas GB-C virus) infection has been reported to be 5%-13% in patients with non-A-E hepatitis andcirrhosis,however,there is little evidencesuggesting that HGV causes hepatitis in human.

关键词： transfusion-transmitted virus liver disease/etiology DNA virus polymerase chain reaction serodiagnosis hepatitis viruses

Erbium photoluminescence response related to nanoscale heterogeneities in sol-gel silicates

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Journal of Rare Earths 2013年第1期31卷 18-26页

作者： H.C.Vasconcelos M.G.Meirelles F.Rivera-lópez Department of Technological Sciences and Development Azores University CEFITEC-Centre of Physics and Technological Research Physics Department of FCT/UNL Department of Fundamental and Experimental Physics Electronics and SystemsUniversity of La Laguna

Sol-gel glassy films of the SiO2-TiO2-PO2.5-ErO2.5 system containing nanocrystallites of ErPO4, were obtained through suitable heat treatments. Variations in the shape and intensity of the Er3＋ photoluminescent signal around 1500 nm were linked to the nature of the host environment of the active ions; the specific features of the photoluminescent emission spectrum of the erbium 4113/2 metastable level were interpreted in terms of structural changes in the glassy films. The photoluminescent spectrum was found to be sensitive to the order （crystalline） or disorder （amorphous） of the Er3＋ ions neighbour within the glassy matrix. An amorphous envi- ronment led to a broadening of Er3＋ Pl emission band while a crystalline one was responsible for a drastic photoluminescent band- width narrowing. The presence of nanoscale heterogeneities caused a drastic photoluminescence intensity decrease. Changes in the shape of the decay curve of fluorescence lifetime were found also structurally dependent on volumetric defects, occurrence of phase separation and Er3＋-Er3＋ clustering effects as well.

关键词： sol-gel Er3+ optical probe nanoscale heterogeneities photoluminescence ErPO4 rare earths

Glass Formation and Thermal Stability in Rapidly Solidified Al-Fe-V-Si Alloy with Misch Metal Additions

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Journal of Materials Science & Technology 1996年第1期12卷 11-14页

作者： Wang, JQ Zeng, MG Tseng, MK Chen, XF Dong, l Gu, SX lIAONING PROVINCE CTR ANAl & TESTING RES SHENYANG 110015PEOPLES R CHINA

A new amorphous Al(87.3)Fe(4.3)V(0.7)Si(1.7)Mm(6.0)(Mm: misch metal) was prepared by using melt-spinning technique. Differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray (EDX) have been used to investigate the crystallization behaviour of this amorphous alloy. It is found that the crystallization process can be concluded as follows: amorphous --> amorphous plus fcc-Al --> fcc-Al plus Al-11(la,Ce)(3) plus i-phase (icosahedral) --> fee-Al plus Al-11(la,Ce)(3) plus i-phase plus ic-phase (icosahedral compounds). The results of microhardness measurement show that HV values are higher than those in AI-Fe-V-Si based alloy, and the maximum HV value corresponds to the coexisting of nanoscale Al particles and i-phase.

关键词： Aluminum alloys

High–Speed electron beam curing of thick electrode for high energy density li-ion batteries

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Green Energy & Environment 2019年第4期4卷 375-381页

作者： Zhijia Du Christopher J.Janke Jianlin li David l.Wood III Energy and Transportation Science Division Oak Ridge National LaboratoryOak RidgeTN 37831USA Chemical Sciences Division Oak Ridge National LaboratoryOak RidgeTN 37831USA

Electron beam curing is demonstrated as a promising method for high speed,low cost and environmentally friendly battery electrode *** work reports transfer of this process to pilot scale equipment and evaluation of electrochemical performance in prototype 1.5 Ah pouch *** liNi0.5Mn0.3Co0.2O2(NMC532)composite electrodes with an areal loading of 25 mg cm^-2(~4 mAh cm^-2)are successfully cured at a line speed of 500 feet per minute at 275 *** to the NMC532 cathode processed via a conventional coating method,the electron beam cured electrodes show higher capacity fade in the first 100 cycles,but similar fade rate *** improvement strategies are proposed and *** work demonstrates that electron beam curing is a promising method for manufacturing thick battery electrodes at high speeds and low capital/operation cost.

关键词： Electron beam curing li-ion batteries Thick electrode

Molecular Dynamics Study of Dipalmitoylphosphatidylcholine lipid layer Self-Assembly onto a Single-Walled Carbon Nanotube

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Nano Research 2009年第12期2卷 945-954页

作者： Hongming Wang Servaas Michielssens Samuel l.C.Moors Arnout Ceulemans laboratory of Quantum Chemistry Department of Chemistry and INPAC Institute for Nanoscale Physics and ChemistryKatholieke Universiteit LeuvenBelgium

Single-walled carbon nanotubes(SWNTs)are possible nano-injectors and delivery vehicles of molecular probes and drugs into *** order to explore the interaction between lipid membranes and carbon nanotubes,we investigate the binding mechanism of dipalmitoylphosphatidylcholine(DPPC)with SWNTs by molecular *** low concentration range simulations,the DPPC molecules form a supramolecular two-layered cylindrical structure wrapped around the carbon nanotube *** hydrophobic part of DPPC is adsorbed on the surface of the nanotube,and the hydrophilic top is oriented towards the aqueous *** higher concentration ranges,the DPPC molecules are found to form a supramolecular multi-layered structure wrapped around the carbon nanotube *** the saturation point a membrane-like structure is self-assembled with a width of 41.4Å,which is slightly larger than the width of a cell *** study sheds light on the existing confl icting simulation data on adsorption of single-chained phospholipids.

关键词： Cell membrane molecular dynamics carbon nanotubes self-assembly nano-injector