Levels of smooth-muscle myosin heavy-chain protein can be used to diagnose aortic dissection soon after symptom onset. The assay had the greatest diagnostic value in patients with proximal lesions.

A direct simulation code has been developed to solve two-phase flow with mass transfer at the interface. The position of the interface is determined by solving a transport equation of the maker density function, one of front-capturing methods. The present method performs the dissolution of mass of a dispersed phase into a continuous phase as a notable feature. Moreover, transfer of the dissolved mass is solved in the continuous phase. At the interface, mass diffusion flux is calculated both for the boundary condition of mass transfer and for the shrinkage of a droplet. For the validation of the present method, three case studies are successfully demonstrated: rise of single droplet, dissolution from a rigid sphere, and dissolution from a rising droplet. [S0098-2202(00)01303-1]

This study investigated dental students' smoking behavior and their attitudes, in order to provide programs to patients for giving up smoking. A questionnaire survey was conducted on dental students from November 2003 to February 2004. The subjects were 69 third-grade and 80 fifth-grade students of Tokyo Medical and Dental University. The following results were obtained. (1) The smoking rate of dental students was 19.4% (Male: 31.3%, Female: 5.8%). (2) About forty-three percent of the students had started smoking before entering the university. However, most of the students who smoked had started after entering the university. The smoking rate and number of cigarettes smoked of fifth-grade students were significantly higher than those of third-grade students. (3) Dental students recognized the health risks of smoking more than the general public, especially concerning periodontal disease. (4) Only 5.4% of students answered that they would actively provide advice and instructions about the health hazards of tobacco to patients who smoked. (5) The rate of students who answered that they had enough knowledge to conduct smoking cessation programs for patients was 21.5%. (6) Students who smoked showed positive attitudes towards dentists' smoking behaviors and had passive attitudes towards smoking cessation programs conducted by dentists. These results show it is necessary to conduct smoking cessation programs soon after entering university and to provide more lectures on tobacco and health issues as well as practical training programs about giving up smoking in the dental education curriculum.

In the present research, we discuss the influence of mesh non-orthogonality on numerical solution of a type of buoyant flow. Buoyant jet flows are simulated numerically with hexahedral and prismatic mesh elements in an open source Computational Fluid Dynamics (CFD) code called "OpenFOAM". Buoyant jet instability obtained with the prismatic meshes may be overestimated compared to that obtained with the hexahedral meshes when non-orthogonal correction is not applied in the code. Although the non-orthogonal correction method can improve the instability generated by mesh non-orthogonality, it may increase computation time required to reach a convergent solution. Thus, we propose modified solvers that can reduce the influence of mesh non-orthogonality and reduce the computation time compared to the existing solvers in OpenFOAM.It is demonstrated that calculations for a buoyant jet with a large temperature difference are performed faster by the modified solver.

A visualization procedure for the 3-D histogram of color images is presented. The procedure assumes that the histogram is available as a table that associates to a pixel color the number of its appearances in the image. The procedure runs for the RGB, YMC, HSV, HSL, L*a*b*, and L*u*v* color spaces and it is easily extendable to other color spaces if the analytical form of color transformations is available. Each histogram value is represented in the color space as a colored ball, in a position corresponding to the place of the color in the space. A simple drawing procedure is used instead of more complicated 3-D rendering techniques. The 3-D histogram visualization offers a clear and intuitive representation of the color distribution of an image. The procedure is applied to derive a clusterization technique for color classification and visualize its resuIts, to display comparatively the gamut of different color devices, and to detect the misalignment of the Rc3B planes of a color image. Diagrams illustrating the visualization procedure are presented for each application.