Modeling of bubble removal from glassmelts at fining temperatures

Α new model based on the quasi-stationary approximation is developed for removal of gas bubbles from glassmelts due to buoyant rise of bubbles. The growth and rising of multicomponent gas bubbles in glassmelts are examined from the view point of interfacial mass transfer. It is shown that the models for rising bubbles in glassmelts available in the literature are based on the quasi-steady approximation which is not very reasonable. The growth of a gas bubble initially consisting of nitrogen only is studied in a glassmelt whose diffusing gases are oxygen, water, carbon dioxide, sulfide and nitrogen. The proposed model based on the unsteady-state mass transfer (the quasi-stationary approximation) is compared with the model based on the steady-state mass transfer (the quasisteady approximation). The former, which provides more rational and better descriptions of bubble behavior in refming processes compared with the latter, predicts rather shorter refming times than the latter

Critical Crossover Behavior of Itinerant Weak Antiferromagnets around Quantum Critical Point

Magnetic and thermal critical behaviors of itinerant electron magnets around the quantum critical point (QCP) have recently attracted much interest. On the other hand, crossover phenomena between classical and quantum critical behaviors have not drawn much attention. The purpose of this study is, therefore, clarifies how the predominance of thermal and quantum critical behaviors will change around the QCP based on the spin fluctuation theory. We show that in the region very close to the Neel temperature TN in the paramagnetic phase, the temperature dependence of the inverse of staggered susceptibility obeys the classical (T-TN)2-linear behavior. With increasing temperature T, it changes into the quantum critical (T3/2-TN 3/2)-linear dependence above the crossover temperature T*. Since T* tends to vanish in the quantum critical limit TN 0, the classical critical region disappears and predominant T3/2-linear behavior prevails

Critical Crossover Behavior of Itinerant Weak Antiferromagnets around Quantum Critical Point

Magnetic and thermal critical behaviorsof itinerant electron magnets around the quantumcritical point (QCP) have recently attracted muchinterest. On the other hand, crossover phenomenabetween classical and quantum critical behaviors havenot drawn much attention. The purpose of this studyis, therefore, clarifies how the predominance ofthermal and quantum critical behaviors will changearound the QCP based on the spin fluctuation theory.We show that in the region very close to the Neeltemperature TN in the paramagnetic phase, thetemperature dependence of the inverse of staggeredsusceptibility obeys the classical (T-TN)2-linearbehavior. With increasing temperature T, it changesinto the quantum critical (T3/2-TN3/2)-lineardependence above the crossover temperature T*.Since T* tends to vanish in the quantum critical limitTN 0, the classical critical region disappears andpredominant T3/2-linear behavior prevails

Exercise classification using CNN with image frames produced from time-series motion data

Exercise support systems for the elderly have been developed and some were equipped with a motion sensor to evaluate their exercise motion. Normally, it provides three-dimensional time-series data of over 20 joints. In this study, we propose to apply Convolutional Neural Network (CNN) methodology to the motion evaluation. The method converts the motion data of one exercise interval into one gray scale image. From simulation results, the CNN was possible to classify the images into specified motions

Phencyclidine and the Dynamics of Mouse Brain Histamine

ABSTRAC

Influence of storage temperature on indomethacin release from fatty-base suppositories in vitro and in vivo.

The release of indomethacin from fatty-base suppositories, which had been stored at a low (4 degrees C) and a high (25-30 degrees C) temperature for about one month, was examined in vitro and in vivo. In the in vivo experiments, the plasma indomethacin levels after administration of suppositories stored at different temperatures were measured in conscious and anesthetized rats. In the in vitro release test using a dialysis cell method, much lower amounts of indomethacin were released from the suppositories stored at a high temperature than from those stored at a low temperature. The melting point of suppositories stored at a high temperature was higher by approximately 2 degrees C than those stored at a low temperature. In conscious rats, the plasma indomethacin levels attained after the intrarectal administration of suppositories stored at a high temperature were slightly lower than those after the animals were given suppositories stored at a low temperature, but the difference was significant only 30 min after administration. In anesthetized rats, the plasma indomethacin levels were markedly lower than those in conscious rats, and the influence of the storage temperature on the plasma indomethacin levels was clearly observed. These results suggest that in conscious rats many factors such as a locomotor hyperactivity and enhancement of gastrointestinal motility caused by the rectal administration mask the real character of suppositories. The in vitro and in vivo results show that the release of indomethacin from fatty-base suppositories stored at a high temperature is less than the release from those stored at a low temperature.</p

Suppressor T cell Inducing Factor from a Human Macrophage Like Cell Line-U 937

U 987, a human histiocytic lymphoma cell line, spontaneously produces a factor(M-SF) which inhibits blastogenic responses of lymphocytes and Interleukin 2(IL-2) activated killer(IAK) induction from human peripheral blood lymphocytes (PBL). We investigated the mechanism of the suppressor action and the physicochemical character of the M-SF. Suppressive activity of U 937 culture supernatant was absorbed with human peripheral blood T lymphocytes. When the M-SF pretreated T cells were added, the mitogenic response of fresh allogeneic or autologus PBL to phytohaemagglutinin(PHA), Concanavalin A(Con A) and pokeweed mitogen(PWM) were suppressed. In addition, IL-2 activated killer activity was suppressed when the M-SF pretreated T cells were present in the induction phase of IAK. These suppressions were mediated by soluble factors produced by M-SF treated T lymphocytes. These results suggest that the pretreatment of T lymphocytes with M-SF resulted in the induction of suppressor T lymphocytes. M-SF also inhibited the protein kinase activity associated with T cell membrane. The intensity of phosphorylated T cell membrane proteins with the molecular weights of 110, 94, 42, 38 and 34 killodaltons on SDS PAGE were decreased. Dephosphorylation of these proteins may be related to the functional alteration of T lymphocytes. CPG-10 Gel permeation and hydrophobic interaction column chromatographic analysis revealed that the M-SF was an extremely hydrophobic sialoprotein of which approximate molecular weight was 10,000 daltons