In this work, the feasibility of flow pattern and oil hold up the prediction for vertical upward oil–water two–phase flow using pressure fluctuation signals was experimentally investigated. Water and diesel fuel were selected as immiscible liquids. Oil hold up was measured by Quick Closing Valve (QCV) technique, and five flow patterns were identified using high-speed photo...

Pyrano [2,3-d] pyrimidinone derivatives have received considerable interest from the pharmaceutical industry due to their wide range of interesting biological and therapeutic properties. Nano Al2O3 was found to be a highly efficient solid acid catalyst for the preparation of pyrano [2,3-d] pyrimidinone derivatives from the reaction of barbituric acid, aryl aldehyde and mal...

thirty seven randomly selected patients suffering from multiple s c l e r os i s (ms) (17 males and 20 females)and 30 healthy control subjects were studied for the lymphocyte subpopulations and ce l l -medi a t e d immunity.we obs e r ved a decrease of the total t-cells and an increase of a ctive t-lymphocytes and b ce l l s , in ms p at i ent s as compared t o normal controls. the inability of...

Hill is a classical cipher which is generally believed to be resistant against ciphertext-only attack. In this paper, by using a divideand-conquer technique, it is first shown that Hill with d× d key matrix over Z26 can be broken with computational complexity of O(d26), for the English language. This is much less than the only publicly known attack, i.e., the brute-force with complexity of O(d2...

We consider the problem of condensation of open string tachyon fields which have an O(D) symmetric profile. This problem is described by a boundary conformal field theory with D scalar fields on a disc perturbed by relevant boundary operators with O(D) symmetry. The model is exactly solvable in the large D limit and we analyze its 1/D expansion. We find that this expansion is only consistent fo...

background: human t-lymphotropic virus (htlv), a retrovirus, is the causative agent of adult t-lymphocytic leukemia (atl) and tropical spastic paraparesia (tsp). htlv-1 is transmitted mainly through blood transfusion. sabzevar is an endemic region for htlv infection; hence it is essential to detect the prevalence of htlv1/2 infection in the blood donors of this city. materials and methods: in t...

background and aim: 2,4-dichlorophenol (dcp) is a compound  generated in a variety of industrial processes and also by chlorine disinfection of water polluted with phenolic compounds . dumping of dcp into the environment and water resources is of great concern because of the compound's intense odor and toxicity. dcp is very soluble and resistant to biodegradability so it cannot be removed ...

the res ults of vag i noplasty ~n t e ~ patients using the davidov t e chni que have be e n reported . nine pat ients had the procedure performed f or the i r s t time . one patient had a prev ~o us vaginoplasty , ( t e chni que ). pos t -operative mo rbi d ity wa s mi nima l a nd the l ong term r esults go' od. further advantages o f the technique have been discussed