Search results1 – 10 of over 2000
The purpose of this paper is to prepare new economical thermal resistant coatings containing white sand (WS) and kaolin (K) fillers, which are cheap natural ores in Egypt…
The purpose of this paper is to prepare new economical thermal resistant coatings containing white sand (WS) and kaolin (K) fillers, which are cheap natural ores in Egypt and are sources for ceramic materials such as SiO2 and Al2O3.
This paper investigates the effect of heat at 500°C on the durability of mild steel samples coated with silicon coatings. The coated plates were exposed to elevated temperatures according to ASTM D 2485 to determine their stability. Thermal gravimetric analysis and scanning electron microscopy were used to investigate the thermal stability of the modified films.
It was revealed that the composite fillers can enhance the thermal stability of silicon coatings. Another advantage of using the prepared composite fillers is promoting the dryness of silicon resin without heat.
Different natural ores were used as ceramic filler to enhance the thermal stability of silicon coatings.
New economical thermal-resistant coatings containing white sand and kaolin were prepared to replace the expensive thermal coatings; also, they can be used in industries other than coatings, e.g. paper, rubber and plastics composites.
THE luncheon given by the Lord Mayor, Sir Ralph Perring, to more than 700 guests at Guildhall on November 14, officially launched the country on National Productivity Year. Apart from representatives of the 120 local committees these were people from trade and employers' associations, trades unions, professional bodies and research organisations. It was, in effect, a token mobilisation of Britain's industrial might, because behind it stands a large army devoted to the task of increasing the country's output.
The Food and Drugs Bill introduced by the Government affords an excellent illustration of the fact that repressive legislative enactments in regard to adulteration must always be of such a nature that, while they give a certain degree and a certain kind of protection to the public, they can never be expected to supply a sufficiently real and effective insurance against adulteration and against the palming off of inferior goods, nor an adequate and satisfactory protection to the producer and vendor of superior articles. In this country, at any rate, legislation on the adulteration question has always been, and probably will always be of a somewhat weak and patchy character, with the defects inevitably resulting from more or less futile attempts to conciliate a variety of conflicting interests. The Bill as it stands, for instance, fails to deal in any way satisfactorily with the subject of preservatives, and, if passed in its present form, will give the force of law to the standards of Somerset House—standards which must of necessity be low and the general acceptance of which must tend to reduce the quality of foods and drugs to the same dead‐level of extreme inferiority. The ludicrous laissez faire report of the Beer Materials Committee—whose authors see no reason to interfere with the unrestricted sale of the products of the “ free mash tun,” or, more properly speaking, of the free adulteration tun—affords a further instance of what is to be expected at present and for many years to come as the result of governmental travail and official meditations. Public feeling is developing in reference to these matters. There is a growing demand for some system of effective insurance, official or non‐official, based on common‐sense and common honesty ; and it is on account of the plain necessity that the quibbles and futilities attaching to repressive legislation shall by some means be brushed aside that we have come to believe in the power and the value of the system of Control, and that we advocate its general acceptance. The attitude and the policy of the INTERNATIONAL COMMISSION ON ADULTERATION, of the BRITISH FOOD JOURNAL, and of the BRITISH ANALYTICAL CONTROL, are in all respects identical with regard to adulteration questions; and in answer to the observations and suggestions which have been put forward since the introduction of the Control System in England, it may be well once more to state that nothing will meet with the approbation or support of the Control which is not pure, genuine, and good in the strictest sense of these terms. Those applicants and critics whom it may concern may with advantage take notice of the fact that under no circumstances will approval be given to such articles as substitute beers, separated milks, coppered vegetables, dyed sugars, foods treated with chemical preservatives, or, in fact, to any food or drug which cannot be regarded as in every respect free from any adulterant, and free from any suspicion of sophistication or inferiority. The supply of such articles as those referred to, which is left more or less unfettered by the cumbrous machinery of the law, as well as the sale of those adulterated goods with which the law can more easily deal, can only be adequately held in check by the application of a strong system of Control to justify approbation, providing, as this does, the only effective form of insurance which up to the present has been devised.
Purpose – To predict the existence of the aquifer, search the location, position, thickness, deep and dissemination of subsurface aquifer and predict the environmental…
Purpose – To predict the existence of the aquifer, search the location, position, thickness, deep and dissemination of subsurface aquifer and predict the environmental condition by conducting the groundwater/aquifer condition.
Design/Methodology/Approach – The way to know the state of groundwater aquifers, one of which is the Geo-electric Method by using the Resistivity Schlumberger Method.
Findings – Pouple activities are not many effects to the groundwater but more time depend on the development, it can many influences to environmental conditions.
Research Limitations/Implications – The analysis is conducted to every point but on this research, it is on mentioned and taken from one sample only, it is HPR.
Practical Implications – In anticipation the effect of the development of the region in general, it is necessary to be able businesses for raw water, irrigation and Industry of the groundwater can be as well as how to control over the distribution and causes of infiltration into the soil.
Originality/Value – That is by measuring the resistivity and mapping dealer spread a layer of groundwater (aquifers) that an overview of the groundwater can be known.
The purpose of this paper is to implement the mathematical models to predict concretes physico-mechanical characteristics made with binary and ternary sands using a…
The purpose of this paper is to implement the mathematical models to predict concretes physico-mechanical characteristics made with binary and ternary sands using a mixture design method. It is a new technique that optimizes mixtures without being obliged to do a lot of experiments. The goal is to find the law governing the responses depending on mixture composition and capable of taking into account the effect of each parameter separately and in interaction between several parameters on the characteristics studied.
Mixture design method was used for optimizing concretes characteristics and studying the effects of river sand (RS), dune sand (DS) and crushed sand (CS) in combinations of binary system and ternary on workability, the compressive and flexural strengths of concretes at 7 and 28 days. A total of 21 mixtures of concrete were prepared for this investigation. The modeling was carried out by using JMP7 statistical software.
Mixture design method made it possible to obtain, with good precision, the statistical models and the prediction curves of studied responses. The models have relatively good correlation coefficients (R2 = 0.70) for all studied responses. The use of binary and ternary mixtures sands improves the workability and their mechanical strengths. The obtained results proved that concrete, based on binary mixture C15, presents the maximum compressive strength (MCS) on 28 day with an improvement of around 20%, compared to reference concrete (C21). For ternary mixtures, MCS on 28 day was obtained for the mixture C10 with an improvement of around 15% compared to C21. Increase in compressive strength during the progress of hydration reactions was accompanied by an increase in the flexural strength, but in different proportions.
The partial incorporation of DS (= 40%) in the concrete formulation can provide a solution for some work in the southern regions of country. In addition, the CS is an interesting alternative source for replacing 60% of RS. The concrete formulation based on local materials is really capable of solving the economic and technical problems encountered in the building field, as well as environmental problems. Local resources therefore constitute an economic, technological and environmental alternative.
There is no other reference source for biographical information that has the reach of the detail that the National Cyclopedia of American Biography has. Extending back to colonial times, and up to today's community leaders, NCAB presents a detailed picture of almost every famous American that one could think of. Certainly more than one would ever know of.
Examines early time‐based ornamental plasterwork in the United Kingdom. Discusses the origins, methods, supporting structures, original finish and repairs and problems of this plasterwork. Concludes that plasterwork can be maintained no matter what condition it is in, so \ill\ action should be centred on helping later conservation by, for example, propping and padding vulnerable plasterwork.
UNDER the auspices of the Gassiot Com‐mittee of the Royal Society a conference on rocket exploration of the upper atmosphere was held at Queen's College, Oxford, on August 24, 25 and 26. The majority of the papers pre‐sented were concerned with the instrumentations and techniques for physical measurements con‐cerning the atmosphere, but in addition there were some papers which outlined the develop‐ment of the high altitude sounding rocket, first using modified V‐2 rockets and then new vehicles constructed specifically for high altitude research.
This study investigated the emerging progressive use of ornamental art in the landscape architecture of Kazakhstan and determined the influence of symbolism on the quality…
This study investigated the emerging progressive use of ornamental art in the landscape architecture of Kazakhstan and determined the influence of symbolism on the quality of new urban environments. The study analysed the existing recreational facilities in Kazakhstan in order to establish their symbolic meaning, the level of utilisation of symbolic ornaments, and the socio-economic factors that influence the design structure of landscape elements. The results revealed that symbolic meanings of the ornaments stem from historic, legal and cultural traditions of different ethnic groups in Kazakhstan. Therefore, the form depends on not only the topography of the area, but also the traditional symbolism and numerology. This study categorised the studied places according to their size: large gardens, small squares and small landscape forms. Taking into account the natural and climatic features of Kazakhstan, small landscape forms acquire the quality of arid zone gardens. However, lack of identity and consistency appears to be a major problem in design of larger scale landscapes. This article posits that coordination between socio-economic and historical-cultural factors will open new creative opportunities for the development of an original landscape architecture in Kazakhstan, yet balance between environmental construction and contextually meaningful urban planning will still be needed.