Physico-chemical investigations of the flotation and selective flocculation of minerals

Imperial Users onl

Orthogonal Projections Based on Hyperbolic and Spherical n-Simplex

In this paper, orthogonal projection along a geodesic to the chosen k-plane is introduced using edge and Gram matrix of an n-simplex in hyperbolic or spherical n-space. The distance from a point to k-plane is obtained by the orthogonal projection. It is also given the perpendicular foots from a point to k-plane of hyperbolic and spherical n-space.Comment: 13 page

Mosses of Gunung Serapi, Sarawak, Borneo

Collections of mosses have been made from the 911 metre high Gunung (Mount) Serapi in Sarawak. A total of 77 species in 37 genera within 17 families were discovered and are enumerated below. Five species are reported for the first time for Borneo: Aerobryidium aureonitens (Hook. ex Schwägr.)Broth., Distichophyllum schmidtii Broth., Mitthyridium fasciculatum subsp obtusifolium (Lindb.) M.Menzel, Papillidiopsis complanata (Dixon) W.R.Buck & B.C.Tan and Trichosteleum stigmosum Mitt. Seventeen species are new records for Sarawak. One family, Bartramiaceae, and 3 genera, Aerobryidium, Leucoloma, Philonotis, are new to Sarawak. The largest family is Calymperaceae, with 6 genera and 21 species, followed by Sematophyllaceae, with 10 genera and 19 species

The Logistics Education In The Universities of Turkey

Logistics is one of the most important compenents in achieving the success for the firms in competition in the present day and that the employment of the qualified people who graduated from universities by firms in this field is crucial. For this reason, that the promising logistics managers take the sufficient education and training in the field of Logistics Management is one of the most important subjects. For a succesful education and training, the contents of the courses, the academic staff who teach and the methods used in teaching are quiet important. In this study used the questionnare method, it’s aimed to cover up the available case by making an extensive research for logistics education in Turkey.Logistics, Education, Turkey

Gel tezkere demişti

Taha Toros Arşivi, Dosya No: 122/A-Esmera

Formulation and Investigation of Eroding Hydrophilic Matrix Systems

On the basis of this study the following can be con cluded: •There is a correlation between the wetting properti es of powder mixtures and the erosion of inert comprimates. •Factors which increase wetting time are relevant for temperature elevation during the formulation of this system. The effect of operational factors can be predicted from the results of such preformulation studies. •The composition applied was appropriate for the incorporation of LA. It can be processed into the granulating fluid (up to concentration of 15%). The presence of LA in the granulating fluid altered significantly neither the particle size distribution, nor the mechanical properties of the granules. The shape of the tablets constantly changed during the dissolution, the main alteration could be seen after 4 h. Erosion and change in shape were very similar for each of the samples. •The pH-decreasing effect of the tablets was influenced by the concentration of LA applied in the granulating fluid. Erosion is the main parameter responsible for the liberation of LA from this system in the first partof dissolution. This phenomenon increased the possibility of detachment of LA from the insoluble carrier. When the concentration of LA reached a given level, the more readily liberating sites were saturated. In the second stage of dissolution the relevance of erosion was lower and the slower process became more important. Finally, it can be stated that a controlled release intravaginal matrix tablet can be formulated from the matrix former HPMC and the carrier MCC to ensure a long-acting preparation containing LA. In addition, there was no sign of matrix destruction caused by the LA as a strong acid

Söz uçar yazı kalır

Taha Toros Arşivi, Dosya No: 40-Ahmet Hamdi Tanpınarİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033