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EXPERIMENTAL RESEARCH OF CYLINDER TO BED HEAT TRANSFER IN AGITATED FLUIDIZED BEDS

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j.urnal of Hydrodynamics 2000年第4期12卷 36-40页

作者： Ma, j.H. Dep. of Air-condition Eng. Shandong Inst. of Archit. and Eng. Jinan 250014 China

Cylinder-to-bed heat transfer in agitated fluidized beds was studied experimentally. In the experiments, the aluminum particles were used as bed material, the diameter of those ranged from 0.5 mm to 2 mm. The effects of gas velocity, particles size, and agitator rotary speed on heat transfer were studied. From the experimental results, we have come to the following conclusion: (1) there are optimal ranges for airflow velocity and rotary speed to get optimal heat transfer coefficient; (2) the cylinder-to-bed heat transfer is greatly affected by gas velocity, rotary speed and particles sizes, and the effect of rotary speed on heat transfer is similar to that of gas velocity; (3) higher heat transfer coefficient is obtained with smaller particles.

关键词： Fluidized beds Heat transfer Mass transfer Two phase flow

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拿破仑·希尔积极思考的钥匙

An improve d smoothe d particle hydrodynamics approach using new inverse kernel function

作者：迈克尔·j.里特

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j.urnal of Ocean Engineering and Science 2022年第4期7卷 327-336页

作者： j.R.Raj.priyadharshini Department of Civil Engineering Thiagarajar College of EngineeringMaduraiTNIndia

The main limitation of Smoothed Particle Hydrodynamics(SPH)method that resists the method’s poten-tial is its lack of providing stability and accuracy to the numerical *** improve the accuracy of the standard SPH technique,by formulating a new inverse logarithmic kernel *** new kernel function is derived based on the underlying properties of kernel *** approximation technique used here is based on the Moving Least Squares based *** adequacy of the proposed ker-nel function is tested by simulation of 2D shock wave propagation and 3D dam-break free surface flow against a cuboidal *** method was validated against experimental data by Kleefsman et al.,[1].The numerical results reveal that our new SPH approach using inverse logarithmic kernel function outper-forms existing ones in particle restoration,zero error,better accuracy and enhanced efficiency in kernel *** new kernel function showed some improvement over existing kernels by showing very less error approximation value of 0.035h *** results showed some improvements over standard technique by being capable of handling problems with large deformations accurately and precisely.

关键词： Inverse logarithmic function Moving least squares approximation Shock wave propagation 3D dam-break flow Zero error

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ATM连网技术

Metastable noble gas atoms in strong-field ionization experiments

作者：沃尔特.j.戈拉尔斯基

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High Power Laser Science and Engineering 2016年第3期4卷 74-100页

作者： j.E.Calvert A.j.Palmer I.V.Litvinyuk R.T.Sang Australian Attosecond Science Facility Center for Quantum Dynamics School of Natural Sciences Griffith University

The interactions of strong-field few-cycle laser pulses with metastable states of noble gas atoms are examined. Metastable noble gas atoms offer a combination of low ionization potential and a relatively simple atomic structure, making them excellent targets for examining ionization dynamics in varying experimental conditions. A review of the current work performed on metastable noble gas atoms is presented.

关键词： COLTRIMS electron holography high power lasers ionization regime metastable atoms spin polarized targets

Differentiation of xanthomonads causing the bacterial leaf spot of poinsettia in China from the pathotype strain of Xanthomonas axonopodis pv. poinsettiicola

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j.urnal of Zhej.ang University-Science B(Biomedicine & Biotechnology) 2005年第6期6卷 451-453页

作者：李斌谢关林 SWINGS j Institute of Biotechnology Zhejiang University Hangzhou 310029 China Laboratorium voor Microbiologie Universiteit Gent K. Ledeganckstraat 35 9000 Gent Belgium

In October 2003, a new bacterial disease with symptoms similar to those caused by Xanthomonas axonopodis pv. poinsettiicola was observed on poinsettia leaves at a flower nursery in Zhej.ang Province of China. Three Xanthomonas strains were isolated from infected plants and classified as X. axonopodis. They were differentiated from the pathotype strain LMG849 of X. axonopodis pv. poinsettiicola causing bacterial leaf spot of poinsettia by comparison of pathogenicity, substrate utilization and BOX-PCR genomic fingerprints.

关键词： Bacterial leaf spot of poinsettia BOX-PCR Hypersensitive reaction Pathogenicity X. axonopodis pv. poinsettiicola

The Mutation Game,Coxeter-Dynkin Graphs,and Generalized Root Systems

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Algebra Colloquium 2020年第1期27卷 55-78页

作者： N.j.Wildberger UNSW Sydney Sydney 2052Australia

We introduce the mutation game on a directed multigraph,which is dual to Mozes5 numbers *** new game allows us to create geometric and combinatorial structure that allows generalization of root systems to more general *** interpret Coxeter-Dynkin diagrams in this multigraph context and exhibit new geometric forms for the associated root systems.

关键词： directed graph Dynkin diagram Coxeter group mutation game root system

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罗蒂和实用主义

The clinical rehabilitation of spine and spinal cord disorders: detection and evaluation using SPECT/CT

作者：海尔曼.j.萨特康普

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Neural Regeneration Research 2014年第8期9卷 795-797页

作者： Max j. Scheyerer Clément M.L.Werner Patrick Veit-Haibach Centre for Orthopaedic and Trauma Surgery University Medical CenterJosef-Stelzmann-Str.9CologneGermany Department of Surgery Division of TraumaSurgeryUniversity Hospital ZurichZurichSwitzerland Department of Medical Radiology Division of Nuclear MedicineUniversity Hospital ZurichZurichSwitzerland Department of Medical Radiology Diagnostic and Inverventional Radiolo-gyUniversity Hospital ZurichZurichSwitzerland

Spine-related disorders are caused by several factors including （1） spinal nerve/visceral nerve stimulation by perivertebral aseptic inflammation, （2） spinal nerve/visceral nerve compression by inj.red periverterbal soft tissue, dislocated perivertebral small j.int, and proliferative/degenerative tissue and, （3） secondary damage to the spinal cord, peripheral nerve, vessels and autonomic nerve, which further stimulate nerve root sheath and surround- ing pain-carrying nerve fibers. In many cases, the source of pain cannot be detected by standard image modalities. Particularly in anatomically complex regions like the spine, SPECT/CT can be helpful for some aspects by intro- ducing a metabolical dimension to the classical way of morphology-based diagnostic. The aim of the present review was to give an overview of the adoption of SPECT/CT in a clinical spine-focused setting.

关键词： SPECT The clinical rehabilitation of spine and spinal cord disorders detection and evaluation using SPECT/CT