61 research outputs found

    Computing 3-dimensional groups : crossed squares and cat2-groups

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    The category XSq of crossed squares is equivalent to the category Cat2 of cat2-groups. Functions for computing with these structures have been developed in the package XMod written using the GAP computational discrete algebra programming language. This paper contains a table listing the numbers ι2G of isomorphism classes of cat2-groups on groups G of order at most 30 – a total of 1007 cat2- groups. Secondly, it contains general formulae for ι2G in a number of special cases

    Effects of puzzolanic materials in surface paste disposal by pilot-scale tests: observation of physical changes

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    There are only a few pilot schemes, especially among scientific studies carried out to solve numerous environmental and ecological problems created by water during tailing storage on the surface. It is extremely important to establish precautions that can be taken, especially in the tailing storage process by examining the physical, chemical, mineralogical, and geotechnical changes that develop due to the effect of moisture in the tailing and surface water. In this study, 2 different pilot-scale designs of storage with no additions (reference) and with binder additions (cement and fly ash) to some layers were observed in field conditions for about 1 year to determine the effects of seasonal changes on paste material. The results of the measurements revealed that the water content of the reference design was similar to 10% higher than that of the design with cement addition at the substrates that provide stability and sudden temperature changes at the top layer of the reference design was found to be similar to 35 degrees C. Maximum sudden temperature changes in layers with cement addition and layers with cement and fly ash addition were observed to be similar to 15 degrees C. As a result, the use of cement has made the material more resistant to external factors. However, the study also revealed that fly ash could be used instead of cement with a substitute rate of 50% to reduce the cost for long-term storage in terms of industrial applications

    Ophthalmo-acromelic syndrome in a Turkish infant: Case report

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    Ophthalmo-acromelic syndrome (OAS) is an extremely rare autosomal recessive disorder characterised by eye malformations ranging from true anophthalmia to mild microophthalmia and acromelic malformations. In this article, we report a newborn infant with OAS because of its rare presentation. He was the fourth sibling affected in the family. The parents were healthy but there was a close blood relationship between the parents. Physical examination revealed bilateral true anophthalmia and oligodactyly (bilateral four toes) on the feet. He had no other additional abnormalities. We consider that this rare syndrome could be relatively more common in our country because six Turkish cases of OAS have been reported in the English literature to date. (East African Medical Journal: 2002 79(6): 339-340

    COMPUTING THE RUPTURE DEGREE IN COMPOSITE GRAPHS

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