ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677059

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

The seismic behavior of lifeline systems is predominately controlled by the ground displacement/strain characteristics. This study investigates the wave propagation effect and the ground displacements and ground strains from the latest strong‐motion array data recorded at the Public Work Research Institute (PWRI) of Japan by using finite element method. Usually, the buried pipeline almost moves with the surrounding soil during seismic shaking. In this respect, the investigation of ground displacement characteristics can be used for further application to seismic design of buried pipelines.

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677060

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

Studies were conducted to investigate the feasibility and effectiveness of solidification/stabilization of hazardous heavy metal‐laden sludges with portland cement. The results indicated that the sludge properties had a significant effect on the compressive strength of the solidified samples. Additives such as lime, sodium silicate, calcium chloride, and fly ash could enhance the compressive strength and reduce the leachability of heavy metal. Also, leaching studies indicated that stabilization minimized or prevented the release of heavy metals and created a nonhazardous product.

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677061

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

The direct application of an evaporative cooling system is impractical in Taiwan due to local hot and humid weather conditions. In this study, a hybrid cooling system utilizing an evaporative cooler coupled with a chemical dehumidifier is investigated. The solid desiccant, or silica gel, which could be regenerated by solar energy, dehumidifies the incoming air while the evaporative cooler effectively cools it down to the indoor comfort condition. An optimal design approach including a sensitivity study was performed during the computer simulation process. A systematic result was obtained providing design information, such as the desiccant consumption rate and solar collector area needed for indoor comfort air‐conditioning.

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677062

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

In this paper, a method to identify the damping and stiffness properties of bolted joints from a substructure synthesis scheme is presented. The easily measured frequency response functions of substructures and the assembled structure are the only data needed in this method. A synthesis formula used to predict the frequency response functions of two‐bolt‐joint structures is proposed. The formula makes use of the extracted properties of a single‐bolt‐joint. Some experiments with two free‐free steel beams jointed with one or two bolts are made to check this method. The close correlation between predicted and measured results demonstrates that this method is acceptable.

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677063

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

A kinetic modeling of a one‐dimensional, premixed, and laminar flame with kinetic simulation is numerically simulated to study the mechanism of methane combustion. Calculated results are compared with experimental data. Detailed mechanisms of methane combustion are collected including all highly possible reactions. Furthermore, all rate constants are determined from experiments or literature. The following reactions

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677064

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

The single transverse mode AlGaAs/GaAs laser array with pulsed peak power up to 100 mW has been fabricated successfully. The ridge waveguide laser structure was chosen since it needs only one step liquid phase epitaxy which greatly improves the yield. The ridge waveguide was formed by etching the top p‐type cladding layer through a 4μm to 5μm mask down to the neighborhood of the active layer to form a lateral refraction index difference. It is found that when the spacing between ridge is 5μm, individual lasers are not coupled, and the far field pattern displays a diverged single lobe with a half width of 18° similar to that of a single laser. When an end broad area region is inserted, however, the laser array starts to couple and forms a narrow two‐lobe beam with a half width of 5°. The near‐field pattern can be used to analyze the coupling condition.

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677065

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

A mathematical model is developed to describe the unsteady diffusion in a multi‐layer medium with interfaces that have non‐zero thickness. A general interface condition is used to account for the secondary phenomena that may take place in the interfaces. Analytical solution is obtained by the use of the linear operator method. An example is given to show the effects of the secondary phenomena on the diffusion behavior in the diffusion process with membrane as the interfaces.

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677066

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

This paper presents a new algorithm for hashing. In this approach each key (x, y) is denoted as a pair of letters, and it is extracted from each letter‐oriented key in the key space according to a certain pre‐determined extraction algorithm. For the keys (x, y), our hashing function hashes as follows:

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677067

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

An electronic tension meter was used to detect the weft tension of an Investa PI65 air‐jet loom. The voltage signals of weft tension were stored and analyzed by a microcomputer. The air‐jet pressure and weft yarn properties are found to affect the weft drag which in turn influences the insertion time of the stored yarn. Good weaving performance can be obtained if the outward movement of the toothed rim in the storage drum coincides with the timing of the stored yarn just run out.

ISSN:0253-3839    

DOI:10.1080/02533839.1988.9677068

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor