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Applied Mathematics and Mechanics(English Edition) 2013年第4期34卷 501-522页

作者： s.KUMAR V.sHARMA K.KIsHOR Department of Mathematics Government College Department of Mathematics Himachal Pradesh University Department of Mathematics Government Senior Secondary School

Numerical and analytical investigations of the thermosolutal instability in a viscoelastic Rivlin-Ericksen fluid are carried out in the presence of a uniform vertical magnetic field to include the Hall current with a uniform angular velocity in a porous medium. For stationary convection, the stable solute gradient parameter and the rota- tion have stabilizing effects on the system, whereas the magnetic field and the medium permeability have stabilizing or destabilizing effects on the system under certain condi- tions. The Hall current in the presence of rotation has stabilizing effects for sufficiently large Taylor numbers, whereas in the absence of rotation, the Hall current always has destabilizing effects. These effects have also been shown graphically. The viscoelastic effects disappear for stationary convection. The stable solute parameter, the rotation, the medium permeability, the magnetic field parameter, the Hall current, and the vis- coelasticity introduce oscillatory modes into the system, which are non-existent in their absence. The sufficient conditions for the non-existence of overstability are also obtained.

关键词： magnetic field thermosolutal instability Rivlin-Ericksen rotating fluid Hall current porous medium

Autofluorescence imaging and magnification endoscopy

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World Journal of Gastroenterology 2011年第1期17卷 9-14页

作者： Monalisa Filip sevastita Iordache Adrian sǎftoiu Tudorel Ciurea Research Center of Gastroenterology and Hepatology University of Medicine and PharmacyCraiovaDolj200349Romania

It is well known that angiogenesis is critical in the transition from premalignant to malignant ***,early detection and diagnosis based on morphological changes to the microvessels are *** the last few years,new imaging techniques which utilize the properties of light-tissue interaction have been developed to increase early diagnosis of gastrointestinal(GI) tract *** analyzed several "red-flag" endoscopic techniques used to enhance visualization of the vascular pattern of preneoplastic and neoplastic lesions(*** imaging including autofluorescence imaging,magnifying endoscopy and narrow band imaging).These new endoscopic techniques provide better visualization of mucosal microsurface structure and microvascular architecture and may enhance the diagnosis and characterization of mucosal lesions in the GI *** the near future,it is expected that trimodal imaging endoscopy will be practiced as a standard endoscopy technique as it is quick,safe and accurate for making a precise diagnosis of gastrointestinal pathology,with an emphasis on the diagnosis of early GI tract *** large-scale randomized controlled trials comparing these modalities in different patient subpopulations are warranted before their endorsement in the routine practice of GI endoscopy.

关键词： Angiogenesis Autofluorescence imaging Multiband imaging Narrow band imaging Zoom endoscopy

The human application of gene therapy to re-program T-cell specificity using chimeric antigen receptors

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Chinese Journal of Cancer 2014年第9期33卷 421-433页

作者： Alan D Guerrero Judy s Moyes Laurence JN Cooper Division of Pediatrics The University of Texas MD Anderson Cancer Center The University of Texas Graduate school of Biomedical sciences

The adoptive transfer of T cells is a promising approach to treat cancers. Primary human T cells can be modified using viral and non-viral vectors to promote the specific targeting of cancer cells via the introduction of exogenous T-cell receptors(TCRs) or chimeric antigen receptors(CARs). This gene transfer displays the potential to increase the specificity and potency of the anticancer response while decreasing the systemic adverse effects that arise from conventional treatments that target both cancerous and healthy cells. This review highlights the generation of clinical-grade T cells expressing CARs for immunotherapy, the use of these cells to target B-cell malignancies and, particularly, the first clinical trials deploying the sleeping Beauty gene transfer system, which engineers T cells to target CD19+ leukemia and non-Hodgkin's lymphoma.

关键词： T细胞受体基因治疗异性重新编程抗原嵌合基因转移系统非病毒载体

Evaluation of alternative conceptual models for groundwater modelling

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Geoscience Frontiers 2017年第3期8卷 437-443页

作者： Yangxiao Zhou H.M.P.s.D.Herath UNEsCO-IHE Institute for Water Education

This study evaluates the alternative conceptual models for groundwater modelling. A true model was created with a synthetic alluvial fan-plain hydrogeological framework. Various alternative conceptual models were evaluated for groundwater flow simulations. The first alternative model is a single aquifer layer model; the second alternative model is a 3-layer aquifer model; and the third model is a B-layer model consisting of 3 aquifers separated by 2 aquitards. All models could fit very well to the observa- tions with optimized values of hydraulic conductivities. However, the single aquifer layer model can only compute water balance components with good accuracy. The 3-layer aquifer model can be used for water balance computation and groundwater head simulation with small errors. The 5-layer model is capable of simulating water budget, groundwater head distribution and travel times with high accuracy. Multi- model analysis found only the 3rd alternative model superior.

关键词： Alternative conceptual modelsMulti-model analysisWater budgetTravel time

EXPERIMENT AND sIMULATION FOR THICK-PLATE BENDINGBY HIGH FREQUENCY INDUCTOR

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Acta Metallurgica sinica(English Letters) 1998年第6期11卷 449-455页

作者： s.Imatani Y.Okuno T.Inoue Kyoto Univ Kyoto Japan

In order to produce thick plates with complicated curved surface, a prototype bending machine by the use of high frequency inductor was developed. The bending mechanism is based on the localized stresses which are induced from the difference of temperature in thickness by the high frequency inductor. The operating speed and the thickness of plate were examined from the experiment, and the variation of the temperature was measured. Finite element analysis was carried out in the second part based on the experimentally obtained temperature distribution. The so-called Mindlin plate element was used in order to perform the simulation efficiently. The strategy to produce such curved surface in the practical process was discussed and further perspective of the production system was described. (Edited author abstract) 6 Refs.

关键词： plate bending high frequency inductor die-less forming thermoelasto-plastic deformation finite element method

Characterization of the Tomato Prosystemin Promoter:Organ-specific Expression,Hormone specificity and Methyl Jasmonate Responsiveness by Deletion Analysis in Transgenic Tobacco Plants

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Journal of Integrative Plant Biology 2012年第1期54卷 15-32页

作者： Hamlet Avilés-Arnaut John Paul Délano-Frier Center of Research and Advanced studies (Cinvestav) at Irapuato:Unit for Plant Biotechnology and Genetic Engineering

Tomato systemin is a bioactive peptide that regulates the systemic activation of wound-responsive genes. It is released from its 200 amino acid precursor called prosystemin. Initial tissue-localization and hormone-induced expression assays indicated that the tomato prosystemin gene （sIPs） accumulates mainly in floral tissues and in response to exogenous abscisic acid and methyl jasmonate （MeJA） treatments, respectively. Later, the promoter regions of the Ps gene in tomato （solanum lycopersicum L. cv. Castlemart）, pepper （Capsicum annuum） and potato （solanum tuberosum） were isolated and an in silico analysis of the sIPs promoter revealed an over-representation of stress- and MeJA-responsive motifs. A subsequent 5＇ deletion analysis of the sIPs promoter fused to the/^-glucuronidase reporter （GUs） gene showed that the -221 to ＋40 bp proximal sIPs promoter region was sufficient to direct the stigma, vascular bundle-specific and MeJA-responsive expression of GUs in transgenic tobacco plants. Important ***-specific, light- and MeJA-responsive cis-elements were also present in this region. These findings provide relevant information regarding the transcriptional regulation mechanisms of the sIPs promoter operating in transgenic tobacco plants. They also suggest that its Ussue-specificity and inducible nature could have wide applicability in plant biotechnology.

关键词： cis-regulatory elements flower specific jasmonic acid methyl jasmonate promoter analysis prosystemin wound-responsive genes.

Exact solutions of D-Dimensional schr(o|¨)dinger Equation for an Energy-Dependent Potential by NU Method

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Communications in Theoretical Physics 2011年第4期55卷 541-544页

作者： H.Hassanabadi s.Zarrinkamar A.A.Rajabi Physics Department Shahrood University of Technology Islamic Azad University Garmsar BranchDepartment of Basic Sciences

We study the D-dimensional schr6dinger equation for an energy-dependent Hamiltonian that linearly depends on energy and quadraticly on the relative distance. Next, via the Nikiforov-Uvarov （NU） method, we calculate ... 详细信息

关键词： schrodinger equation D-dimensional space Nikiforov-Uvarov method energy-dependent poten-tial

Field Measurements of Influence of sand Transport Rate on structure of Wind-sand Flow over Coastal Transverse Ridge

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Chinese Geographical science 2008年第3期18卷 255-261页

作者： DONG Yuxiang s L NAMIKAs P A HEsP MA Jun school of Geography and Planning SUN Yat-Sen University Guangzhou 510275 China Department of Geography and 4nthropology Louisiana State University USA

The structure of wind-sand flow under different total sand transport rates was measured with field vertical anemometer and sand trap on the crest of typical coastal transverse ridge in Changli Gold Coast of Hebei Province, which is one of the most typical coastal aeolian distribution regions in China and famous for the tall and typical coastal transverse ridges. The measurement results show that, on the conditions of approximate wind velocities and same surface materials and environments, some changes happen to the structure of wind-sand flow with the increase of total sand transport rate on the crest of coastal transverse ridge. First, the sand transport rates of layers at different heights in the wind-sand flow increase, with the maximum increase at the height layer of 4-8cm. second, the ratios of sand trans-port rates of layers at different heights to total sand transport rate decrease at the low height layer (0-4cm), but increase at the high height layer (4-60cm). Third, the distribution of the sand transport rate in the wind-sand flow can be expressed by an exponential function at the height layer of 0-40cm, but it changes from power function model to ex-ponential function model in the whole height layer (0-60cm) and changes into polynomial function model at the height layer of 40-60cm with the increase of total sand transport rate. Those changes have a close relationship with the limit of sand grain size of wind flow transporting and composition of sand grain size in the wind-sand flow.

关键词： sand transport rate coastal transverse ridge structure of wind-sand flow field measurement

Optical Investigation of sm^(3+) Doped Zinc-Lead-Phosphate Glass

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Chinese Physics Letters 2012年第8期29卷 233-236页

作者： Raja J.Amjad M.R.sahar s.K.Ghoshal M.R.Dousti s.Riaz B.A.Tahir Advanced Optical Material Research Group Faculty of ScienceUniversiti Teknologi Malaysia81310 SkudaiJohorMalaysia Centre for solid state Physics University of the PunjabQACLahore-54590Pakistan

samarium doped lead-zinc-phosphate glasses having composition(60-x)P_(2)O_(5)-20PbO-20ZnO-xsm_(2)O_(3) where x=0,0.5,1.0,3.0mol%were prepared by using the melt quenching *** Archimedes method was used to measure their densities,which are used to calculate the molar *** values of densities lie in the range 3.698–4.090 gm/cm^(3) whereas those of molar volume lie in the range of 37.24–40.00 cm^(-3).UV-vis-NIR absorption spectroscopy in the wavelength range 200–2000 nm was carried *** spectra consist of seven absorption peaks corresponding to the transitions from the 6H5/2 ground state to various excited energy *** energy band gap measured from the optical absorbance is found to be in the range of 3.88–4.43 eV and 3.68–4.33 eV for direct and indirect transitions,*** addition,the photoluminescence spectrum shows four prominent emission bands centered at 560,597,642 and 700 nm corresponding to the 4G5/2–6HJ(J=5/2,7/2,9/2,11/2)transitions respectively and the intensity of all the bands are enhanced as the concentration of sm3+ions increases.

关键词： technique transitions bands

species delimitation in the White-faced Cuckoo-dove(Turacoena manadensis) based on bioacoustic data

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Chinese Birds 2016年第1期7卷 40-47页

作者： Nathaniel s.R.Ng Frank E.Rheindt Department of Biological sciences National University of Singapore

Background: The White-faced Cuckoo-dove(Turacoena manadensis) is a poorly-known Wallacean endemic with a limited distribution on sulawesi and its satellites, including the Togian, Banggai and sula archipelagoes. In 1900, populations from the sula archipelago were awarded subspecies status T. manadensis sulaensis based on smaller size and minor differences in plumage; however, this distinction has not been corroborated subsequently, and T. manadensis is considered by most modern sources to be monotypic across its ***: We conducted vocal analysis of the cuckoo-doves' main song using recordings collected from across the taxon's natural range. Descriptive information on the songs was obtained from the recordings using bioacoustic analysis software, after which several statistical methods were used to investigate differences in vocalizations among ***: We report deep bioacoustic divergences in vocal trait pattern from across the cuckoo-doves' range, with birds from Peleng and Taliabu in the east having a different vocal trait pattern from birds from sulawesi, Buton, and Togian in the west. These patterns agree with changes in landmass that accompanied the sea level fluctuations caused by Pleistocene glacial cycles, and indicate that eastern and western cuckoo-dove populations are at the level of different biological ***: We propose that the eastern taxon be elevated to species level as T. sulaensis. Given the rampant degree of habitat destruction in its limited range, this taxonomic change will have important implications on the conservation status of T. sulaensis.

关键词： Wallacea sulawesi Peleng Taliabu Buton Pleistocene Island biogeography