Physical-mathematical model of volume condensation and transport of aerosols inside the containment shell of a vver reactor

Main Science Center of the Russian Federation — Physics and Power Engineering Institute. Translated from Atomnaya énergiya, Vol. 79, No. 5, pp. 376–381, November, 1995.     

Spindle-cell thymic carcinoid occurring in multiple endocrine neoplasia I: fine-needle aspiration findings in a case

The biological properties and susceptibility to antimicrobial agents of Bacillus larvae were examined. Twenty-nine strains, 28 isolates from each outbreak of American foulbrood in Japan and a B. larvae type strain (ATCC 9545T) were used. our B. larvae isolates had almost the same biological properties as the type strain. The isolates were more susceptible to penicillins, macrolides and lincomycin, a lincosamide, than other antimicrobials. Microsamicin among the macrolides and ampicillin among the penicillins appeared to be the most effective agents.     

A resource-saving technology for fabricating tile

The possibility of fabrication of ceramic tile from a mixture containing technogenic products including up to 20% cleaned mine water with a high content of calcium oxide and up to 35% alkali-containing waste is established. A nonfritted low-melting glaze is developed on the basis of sand, pegmatite, kaolin, zinc white, zircon concentrate, and calcium borate. The physicochemical properties of the crock and the coating are investigated.     

Influence of water and ammonia on hydrotreating catalysts and activity for tetralin hydrogenation

The effects of H₂O and NH₃ on the kinetics of the liquid phase hydrogenation of tetralin to decalin at 6.9 MPa and 330°C over commercial P---Ni---Mo/alumina catalysts in the presence of H₂S have been investigated. H₂O functioned as a mild kinetic inhibitor to an extent sensitive to the H₂S level. Quasi in situ XPS was used to investigate the catalyst structure after exposure to H₂0/H₂S.     

Prooxidative Effekte von Gewürzen unter Lichteinfluß

Prooxidative Effects of Spices under the Influence of Light. Herbs and spices often reported as antioxidants also contain in many cases photosensitizers such as chlorophyll. Under influence of light these photosensitizes may cause detriment to fats in food by photooxidation which cannot be suppressed by the phenolic compounds. In the present study, these effects have been investigated using black pepper, rosemary and curry. The process of the photoreaction was determined by measuring oxygen uptake and stability decrease of the rancimat under constant illumination conditions. Curcumin and curcumoid compounds were found to be effective photosensitizers. The practical relevance of this protective effect is demonstrated through the decreasing stability of a herb containing salad dressing. The negative effect of an added rosemary extract is shown.     

Ultrasonic thin-walled tube wave structure for sensing devices

Theoretical and experimental investigations of thin-walled tube acoustic wave devices for gravimetric sensing applications are presented. Integrated sensor configurations have been demonstrated by employing a sol-gel processed thin piezoelectric lead zirconate titanate (PZT) film. This was coated coaxially on stainless steel tubes and interdigital transducers (IDT) fabricated as the transmitter and receiver on the curved tube surfaces. We have observed tube waves along both the axial and circumferential directions between 1 and 6.6 MHz. We have also analyzed the mass sensitivities of different modes propagating along the tubes and shown that high mass sensitivity can be achieved by keeping the tube wall thin     

Stabilization of wave equations coupled in parallel by viscous damping

In this article, we consider stabilization of two wave equations coupled in parallel by viscous damping. Uniform exponential stabilization can be achieved when damping is presented in two equations. In general only strong stabilization can be achieved when damping is present in one equation, while uniform exponential stabilization is still possible for some special cases.     

Stability of Mixtoxantrone Hydrochloride in Solution

A stability-indicating reversed-phase high performance liquid chromatographic method was developed for the detection of mitoxantrone HC1 and its degradation products under accelerated degradation conditions. The degradation kinetics of mitoxantrone HC1 in aqueous solution over a pH range of 1.18 to 7.20 and its stability in propylene glycol-or polyethylene glycol 400-based solutions were investigated. The observed rate constants were shown to follow apparent first-order kinetics in all cases. The pH-rate profile shows that maximum stability of mitoxantrone HC1 was obtained at pH 4.01. No general acid or base catalysis from acetate or phosphate buffer species was observed. The catalysis rate constants on the protonated mitoxantrone imposed by hydrogen ion water and hydroxy ion were determined to be 3.72 × 10 min^-1 5.64 × 10-min^-1 and 1.108 × 10^-2min^-1, respectively. The degradation rate constants of mitoxantrone affected by different ionic strength systems. Irradiation with 254 nm UV light at 25±0.5°C was found when canpared with the light-protected controls. Incorporation of nonaqueous propylene glycol or polyethylene glycol in the pH 4.01 mitoxantrone solution shows an increase in its stability at 502±0.5°C.     

New architecture for incoherent optical CDMA to achieve bipolarcapacity

A simple and efficient method for using bipolar codes in noncoherent optical code-division multiple access systems is proposed. The proposed system requires only incoherent optical delay lines and direct detection receivers. Practical architectures for the encoder/decoder are given. The Letter shows that combining Gold codes of period M=127 and Barker code of period K=4 into composite sequences of period N=508 allows 20 simultaneous active users for P_e=10 ^-9, while requiring only four nonprogrammable delay lines