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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Application Analysis of Gas Separation Using LNG Cold Energy.

Chen, Yi-shan 30 June 2009 (has links)
In Taiwan, huge amount of LNG was imported each year where it was evaporated into NG using sea water to provide for household and facility usage, such as power generation. During this conversion process, tremendous cold energy had been wasted and dissipated to the sea. It is the main goal of this research to reclaim the cold energy for another engineering application to conserve energy. Research efforts has been focused on Nitrogen Separation process, where pure Nitrogen should be produced in low temperature, and is thus suitable to use LNG cold energy. It is estimated that among the 20 million kW-h power devoted into N2 separation each year, 48% can be saved from reclaiming LNG cold energy, presenting significant energy-savings potential. Based on 3 processes proposed in this study, the payback years were all ranked within 5 years, indicating promising feasibility for engineering applications.
42

The British press and the origins of the cold war.

Foster, Alan Joseph. January 1987 (has links)
Thesis (Ph. D.)--Open University. BLDSC no. DX89814.
43

Motor function responses to induced pain and cryotherapy /

Long, Blaine Cletus, January 2008 (has links) (PDF)
Thesis (Ph. D.)--Brigham Young University. Dept. of Exercise Sciences, 2008. / Includes bibliographical references.
44

Some effects of hypophsectomy on cold exposed rats.

Chiu, Ta-jen, Daryl. January 1970 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1970. / Typewritten.
45

Britain and East-West detente 1953-1963

White, Brian Philip January 1986 (has links)
No description available.
46

Response of cold briquetted IRon (CBI) to high temperatures treatment

Ibitoye, SA, Adeleke, AA, Tiamiyu, AO, Popoola, APL, Afonja, AA 16 November 2010 (has links)
This investigation was carried out to assess the behaviours of Cold Briquetted Iron (CBI) when exposed to increasing temperature changes up to its complete melting. High-temperature behaviours and melting characteristics of CBI were studied. Ground as-received CBI briquette and those heated to temperatures ranging from 500°C to 1000°C were sieved to maximum of 30 microns diameter size and their room-temperature x-ray diffraction (XRD) measured. CBI was found to contain among others, α-iron, cementite and silica phases. Cementite was found to commence decomposition at 500°C - 600°C and completed by 700°C with conspicuous increase in the concentration of α-iron phase. Only α-iron and silica phases were sustained in CBI at temperatures above 700°C. In an inert atmosphere, it was discovered that CBI melted over a temperature range of 1527.3°C to 1536.96°C accompanied by an irrecoverable weight loss of 9.6 wt.% of the starting material. It was concluded that melting CBI would require charging along it appropriate fluxes to take care of the unreduced iron oxide and incorporation into facility for melting CBI an effective deslagging mechanism to remove unavoidable possible voluminous slag that would be formed.
47

Principles involved in the cold dyeing of wool

Kwok, W-F. January 1979 (has links)
No description available.
48

Phenotype characteristics and pathogenicity for man of chalcone Ro 09-0410-resistant human rhinovirus type 2

Yasin, Salem Rifat January 1991 (has links)
No description available.
49

SEMICLASSICAL TUNNELING EFFECT

Öhman, Johan January 2014 (has links)
This work is a contribution to the theory of the quantum tunneling effect. In the literature at least two barriers are studied, for which the third-order contribution to the phase - integral asymptotic approximation of the transmission coefficient do not contribute. These are the parabolic barrier and the inverse Morse barrier. In the present work we will show that with a proper choice of the so called base function there is at least one more barrier in this category namely the Eckart-Epstein potential. The fact that the third - order contribution vanishes is a good indication that we have found an optimal choice of the base function, and the treatment to find an optimal base function may be possible to generalize to other classes of potential barriers.    For particles of a low energy compared to the energy near the top of the barrier we obtain a vary low transmission coefficient, which means that the probability for tunneling to occur is very low. There exist some cases, for example that with a double barrier which is transparent, even for certain relatively low energies but no evidence for this kind of transparency for a single barrier has been found. The present work does not give any such evidence. At the same time there are still speculations on cold fusion like effects, which would demand a higher probability for tunneling through for a single barrier.
50

Effect of nanoparticles on the properties of masonry mortars and assemblages at a cold temperature

Kazempour, Hooman January 2014 (has links)
Cold weather masonry construction is a major concern for contractors as they either have to implement heating practices for laying and curing masonry systems or postpone the construction to warmer periods. This can lead to loss of productivity rate and delays in construction schedules with associated extra costs. This thesis explores a novel approach for mitigating the adverse effects of cold weather on masonry construction in early fall periods through the application of nano-alumina (NA) and nano-silica (NS) in mortar joints. The assessment criteria were based on the fresh properties, hardened properties and microstructural features of mortar mixtures and mechanical behaviour of concrete masonry prisms at early and later ages. Various test results show that NS can be successfully used to minimize the adverse effects of cold temperature on mortar joints by speeding up the hydration of cement, shortening the setting time, and increasing the strength up to 72 h.

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