检索结果-南通市图书馆

Transport of airborne particulate matters originating from Mentougou, Beijing, China

在线全文

学校读者我要写书评

暂无评论

China Particuology 2007年第6期5卷 408-413页

作者： Duoxing Yang Yongwei Han Jixi Gao jesse Thé institute of Crust Dynamics CEA Beijing 100085 China Chinese Academy of Environmenial Sciences Beijing 100012 China Lakes Environmental Software Inc. 419-3 Phillips St. Waterloo ON N2L 3X2 Canada

In this study, a coupled regional air quality modeling system is applied to investigate the time spatial variations in airborne particulate matters （PM10）, originating from Mentougou to Beijing municipal area in the period of April 1-7, 2004, and the influences of complex terrain and meteorological conditions upon boundary layer structure and PM10 concentration distributions. An intercomparison of the performance with CALPUFF against the observed data is presented and an examination of scatter plots is provided. The statistics show that the correlation coefficient and STD between the modeled and observed data are 0.86 and 0.03, respectively. Analysis of model results illustrates that the pollutants emitted from Mentougou can be transported to Beijing municipal area along certain transport pathways, and PM10 concentration distributions show heterogeneity characteristics. Contributions of the Mentougou sources to the PM10 concentrations in Beijing municipal area are up to 0.1-15 μg/m^3.

关键词： Airborne particulate matters CALPUFF PM10 SMOKE Emission inventory

Assessing Potential Earthquake Loss in Me′rida State, Venezuela Using Hazus

在线全文

学校读者我要写书评

暂无评论

International Journal of Disaster Risk Science 2014年第3期5卷 176-191页

作者： América Bendito jesse Rozelle Douglas Bausch Civil Engineering Department Universidad de Los AndesMe´rida 5101Venezuela Mitigation Division Federal Emergency Management Agency(FEMA)Region VIIIDenverCO 80225USA

The focus of the Hazus earthquake model has been largely U.S. centric due to a lack of standardized building-infrastructure data formats applicable *** a combined effort between FEMA Region VIII and the Universidad de Los Andes, Venezuela, the present study uses the Hazus 2.1 software to simulate earthquake loss estimations for Venezuela. Population totals and demographic distributions were developed using Oak Ridge National Labs Landscan 2008 population data and the census 2011 for Venezuela. The accuracy of the model was further enhanced for Me′rida State, located in western Venezuela, by collecting, incorporating, and developing region and specific inventories including soil maps, liquefaction and landslide susceptibility studies, demographic data, and building inventory information. We used USGS Shake Maps scenarios for two potential earthquake events with peak ground accelerations proposed within Performance Based Seismic Engineering of Buildings, VISION 2000 recommendations. The region has not witnessed an earthquake with a magnitude greater than M 7 in the last120 years. Given the historical record of seismicity and the seismotectonics in the region, it becomes increasingly important to understand the potential implications from moderate to large earthquakes in Me′rida State, Venezuela.

关键词： Disaster loss estimation Earthquake damage Hazus Seismic risk Venezuela

GPU based techniques for deep image merging

在线全文

学校读者我要写书评

暂无评论

Computational Visual Media 2018年第3期4卷 277-285页

作者： jesse Archer Geoff Leach Ron van Schyndel School of Science RMIT University

Deep images store multiple fragments perpixel,each of which includes colour and depth,unlike traditional 2D flat images which store only a single colour value and possibly a depth ***,deep images have found use in an increasing number of applications,including ones using transparency and compositing.A step in compositing deep images requires merging per-pixel fragment lists in depth order;little work has so far been presented on fast *** paper explores GPU based merging of deep images using different memory layouts for fragment lists:linked lists,linearised arrays,and interleaved *** also report performance improvements using techniques which leverage GPU memory hierarchy by processing blocks of fragment data using fast registers,following similar techniques used to improve performance of transparency *** report results for compositing from two deep images or saving the resulting deep image before compositing,as well as for an iterated pairwise merge of multiple deep *** results show a 2 to 6 fold improvement by combining efficient memory layout with fast register based merging.

关键词： deep image composite GPU performance

Modified correlation for minimum fluidization velocity of low-density particles in inverse liquid-solid fluidized beds

在线全文

学校读者我要写书评

暂无评论

Particuology 2022年第12期71卷 56-62页

作者： Michael Nelson Saleh Srabet Tian Nan Dominic Pjontek jesse Zhu Collaborative Innovation Center of Chemical Science and Engineering School of Chemical Engineering and TechnologyTianjin UniversityChina Particle Technology Research Centre Department of Chemical and Biochemical EngineeringWestern UniversityCanada

The minimum fluidization velocity(U_(mf))is a key parameter for the scale-up of inverse liquid-solid flu-idized *** predictions using common correlations were compared against experimental minimum fluidization velocity measurements of low density(28-638 kg/m^(3)),0.80-1.13 mm Styrofoam particles in a fluidized bed with a height of 4.5 m and 0.2 m *** average absolute relative deviation for the predicted minimum fluidization velocity for particles below 300 kg/m^(3) was above 40%using the studied common correlations.A modified Wen and Yu correlation was thus proposed based on novel and past measurements with low-density and small-diameter particles,expanding the range for predicting U_(mf).The new correlation predicted U_(mf) with deviations below 15%for ST028,ST122 and *** modified correlation also improved U_(mf) predictions for comparable particles from a previous study,demonstrating its validity for a larger range of low-density particles.

关键词： Liquid-solid fluidization Inverse fluidization Minimum fluidization velocity Low-density particles

Hydrodynamic characteristics of a rectangular gas-driven inverse liquid-solid fluidized bed

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2023年第7期78卷 86-96页

作者： Yicheng Deng Keying Ma jaqi Huang Yuanyuan Shao jesse Zhu School of Chemical Engineering and Technology Tianjin UniversityTianjin300072China Department of Chemical and Biochemical Engineering Western UniversityLondonOntarioN6A3K7Canada Institute of Shaoxing Tianjin UniversityZhejiang312300China Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute The University of Nottingham Ningbo ChinaNingboZhejiang.315100China

The hydrodynamic characteristics of a rectangular gas-driven inverse liquid-solid fluidized bed(GDFB)using particles of different diameters and densities were investigated in *** gas bubbles cause a liquid upflow in the riser portion,enabling a liquid downflow that causes an inverse fluidization in the downer *** flow regimes(fixed bed regime,initial fluidization regime,complete fluidization regime,and circulating fluidization regime)and three transition gas velocities(initial fluidization gas velocity,minimum fluidization gas velocity,and circulating fluidization gas velocity)were identified via visual observation and by monitoring the variations in the pressure *** axial local bed voidage(e)of the downer first decreases and then increases with the increase of the gas *** the liquid circulation velocity and the average particle velocity inside the downer increase with the increase of the gas velocity in the riser,but decrease with the particle *** empirical formula was proposed to successfully predict the Richardson-Zaki index“n”,and the predicted e obtained from this formula has a±5%relative error when compared with the experimental e.

关键词： Gas-driven Inverse fluidized bed Flow regime Average particle velocity Liquid circulation velocity Bed voidage

Characterization of countercurrent liquid-upward and solid-downward fluidized system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2022年第11期70卷 95-105页

作者： Enming Zhang Keying Ma Yuanyuan Shao jesse Zhu Tian Nan School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Department of Chemical&Biochemical Engineering Western UniversityLondonOntario N6A 3K7Canada Institute of Shaoxing Tianjin UniversityZhejiang 312300China

Acting as an operating mode of fluidization,the flow characteristics of a countercurrent liquid–solid fluidized bed(CCLSFB)were experimentally investigated using a Plexiglas column of 1.5 m in *** liquid-upward and solid-downward fluidization was achieved under a limited solid flowrate before flooding ***“flooding”phenomena and the flooding velocity were identified by measuring the variations in pressure drop in the axial direction of the *** different methods were used to quantify the flooding point that led to the instability of the *** solids holdup profiles were also obtained from the pressure drop data along the column and the influences of device structure and operating conditions on the solids holdup were also *** types of particles with different diameters and densities were *** agreement was found between the experimental results and the mathematic prediction derived from the Richardson–Zaki equation on the data of the solids holdup.

关键词： Countercurrent fluidization Flooding Pressure drop Solids holdup Richardson-Zaki equation

Reaction performance of fluidized bed catalytic reactor of Group C^(+)particles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2021年第1期19卷 5-16页

作者： Zhiwei Zhao Yandaizi Zhou Xiaojun Bao jesse Zhu Haiyan Liu State Key Laboratory of Heavy Oil Processing Department of Chemical EngineeringChina University of PetroleumBeijing 102249China Particle Technology Research Center Department of Chemical and Biochemical EngineeringThe University of Western OntarioLondonOntario N6A 5B9Canada

Group C particles are often regarded as non-fluidizable but have proven to effectively fluidize with nanoparticle addition,which results in small bubbles and a high gas holdup in the dense phase during the *** C^(+)particles provide an increased surface area for gas-solid contact and improve the reaction performance,especially for gas-phase catalytic *** the basis of a previous study of the ozone decomposition reaction using Group C^(+)particles,a two-phase model was used to evaluate the reactor contact efficiency,and was used to compare the partial oxidation performance of the n-butane to maleic anhydride reaction in fluidized-bed catalytic reactors of Group C^(+)and Group A *** reactor with Group C^(+)particles achieved a higher n-butane conversion and MAN yield compared with that using Group A particles,based on the identical catalyst quantity or on the same gas residence ***,the reactor with Group C^(+)particles can achieve the same reaction conversion and yield with fewer catalysts or a smaller reactor size,or ***,the fluidized bed catalytic reactor of Group C^(+)particles is expected to be of major significance in industrial processes,especially for gas-phase catalytic reactions.

关键词： Group C^(+)particles Fluidized bed catalytic reactor Reactor performance Nanoparticles Modified two-phase model Effective surface area

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

秋日湖畔：生命的轮回

数码摄影 2024年第4期 15-15页

作者： jesse

秋日，芦苇枯黄，杂草暗绿，构成了一幅萧瑟的画面。然而，在这看似萧条的景象背后，却蕴含着生命的坚韧与轮回。镜头聚焦于枯黄的芦苇。它们静静地矗立在水边，没有了夏日的繁茂，只剩下一片萧瑟——有的已经折断，有的依然挺立，但都...

秋日，芦苇枯黄，杂草暗绿，构成了一幅萧瑟的画面。然而，在这看似萧条的景象背后，却蕴含着生命的坚韧与轮回。镜头聚焦于枯黄的芦苇。它们静静地矗立在水边，没有了夏日的繁茂，只剩下一片萧瑟——有的已经折断，有的依然挺立，但都无法掩饰生命的衰败。可是，即使在如此萧瑟的境况下，芦苇依然保持着傲然挺立的姿态，展现出生命的坚韧和张力。

关键词：

CDC7 inhibition impairs neuroendocrine transformation in lung and prostate tumors through MYC degradation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第8期9卷 3519-3532页

作者： Alvaro Quintanal-Villalonga Kenta Kawasaki Esther Redin Fathema Uddin Swanand Rakhade Vidushi Durani Amin Sabet Moniquetta Shafer Wouter R.Karthaus Samir Zaidi Yingqian A.Zhan Parvathy Manoj Harsha Sridhar Dennis Kinyua Hong Zhong Barbara P.Mello Metamia Ciampricotti Umesh K.Bhanot Irina Linkov Juan Qiu Radhika A.Patel Colm Morrsey Sanjoy Mehta jesse Barnes Michael C.Haffner Nichlas D.Socci Richard P.Koche Elisa de Stanchina Sonia Molina-Pinelo Sohrab Salehi Helena A.Yu Joseph M.Chan Charles M.Rudin Department of Medicine Thoracic Oncology ServiceMemorial Sloan Kettering Cancer CenterNew YorkNYUSA Cancer Biology and Genetics Program Sloan Kettering InstituteMemorial Sloan Kettering Cancer CenterNew YorkNYUSA Vagelos College of Physicians and Surgeons Columbia UniversityNew YorkNYUSA Weill Cornell Graduate School of Medical Sciences Weill Cornell MedicineNew YorkNYUA Human Oncology and Pathogenesis Program Memorial Sloan Kettering Cancer CenterNew YorkNYUSA Center for Epigenetics Research Memorial Sloan Kettering Cancer CenterNew YorkNYUSA Pathology Core Facilty Department of Pathology and Laboratory MedicineMSKCCNew YorkNYUSA Antitumor Assessment Core Memorial Sloan Kettering Cancer CenterNew YorkNYUSA Divisionsof Human Biology and Clinical Research Fred Hutchinon Cancer CenterSeattleWAUSA Deparmentof Urology University of WashingtonSeattleWAUSA Gene Editing&Screening Core Facility Memorial Sloan Kettering Cancer Center New YorkNYUSA Department of Laboratory Medicine and Pathology University of WashingtonSeattleWAUSA Bioinfomatics CoreFacility Memorial Soan Kettering Cancer CenterNew YorkNYUSA Institute of Biomedicine of Seille(Bis) HURCSCUniversidad de SevillaSevilleSpain Computational Oncology Department of Epidemiology and BiostatisticsMemorial Sloan Kettering Cancer CenterNew YorkNYUSA Well Cornell Medical College New York NYUSA Present address:Swiss Institute for Experimental Cancer Research(ISREC) School of Life SciencesEPFLLausanneSwitzerland

Neuroendocrine(NE)transformation is a mechanism of resistance to targeted therapy in lung and prostate adenocarcinomas leading to poor *** to date,even if patients at high risk of transformation can be identified by the occurrence of Tumor Protein P53(TP53)and Retinoblastoma Transcriptional Corepressor 1(RB1)mutations in their tumors,no therapeutic strategies are available to prevent or delay histological *** of the cell cycle kinase Cell Division Cycle 7(CDC7)occurred in tumors during the initial steps of NE transformation,already after TP53/RB1 co-inactivation,leading to induced sensitivity to the CDC7 inhibitor ***7 inhibition suppressed NE transdifferentiation and extended response to targeted therapy in in vivo models of NE transformation by inducing the proteasome-mediated degradation of the MYC Proto-Oncogen(MYC),implicated in stemness and histological *** overexpression of a degradation-resistant MYC isoform reestablished the NE transformation phenotype observed on targeted therapy,even in the presence of ***7 inhibition also markedly extended response to standard cytotoxics(cisplatin,irinotecan)in lung and prostate small cell carcinoma *** results nominate CDC7 inhibition as a therapeutic strategy to constrain lineage plasticity,as well as to effectively treat NE tumors de novo or after *** simurosertib clinical efficacy trials are ongoing,this concept could be readily translated for patients at risk oftransformation.

关键词： tumors markedly transformation