Concave Type Research Articles

Monotone Processes of Convex and Concave Type (R. Tyrell Rockafellar)

Monotone Processes of Convex and Concave Type (R. Tyrell Rockafellar)

The shallow concave type of early gastric cancer associated with the surrounding area of mucosal malignant infiltration

The shallow concave type of early gastric cancer associated with the surrounding area of mucosal malignant infiltration

A Study on the Contact Facets in the Proximal Surfaces of the Anterior Teeth

The position, form, area and surface condition of the contact facets found hi the proximal surfaces in 40 individual teeth male groups were observed and measured.1. The contact facets were recognized in 80-100% of anterior teeth.2. In the forms, the ellipse form was the most.3. In the opposing correlation of forms, the types which the same forms oppose were more than the types the two different forms oppose.4. The contact facets were in the middle of proximal surfaces.5. The area of contact facets were about 1.0-2.6mm2.6. In the facet surfaces, the centrally concave type was in the most in labio-lingulal and axial directions.7. In the opposing correlation of surface condition, the centrally concave type tothe centrally concave type gained a majority.8. The concave value indicating the degree of concavity in the contact facet surfaces was about 12-30μ.

A convergence theorem in measurable function spaces of concave type

A convergence theorem in measurable function spaces of concave type

Anatomical Observations of the Oleocellosis-like Spot Disease Appearing on Fruits of Iyo-Orange

The present paper is a result of histological and histochemical observations of the oleocellosis-like spot disease appearing on fruits of Iyo-orange (Citrus iyo Hort. ex Tanaka).The peel of healthy area of fruits is composed of epicarp (epidermis), mesocarp and endocarp. The mesocarp comprises hypodermis, flavedo and albedo tissues. The degenerated stoma in epidermis, oil glands and vascular bundles in the flavedo tissue were recognized.In oleocellosis type spot area, at first tangentially elongated cells developed in the flavedo tissue and then these cells died, leading to a necrotic degeneration. The cells in the flavedo tissue surrounding this area then began to divide periclinally. The necrotic cell wall gave a positive phloroglucinol-HCl reaction for the detection of lignin.In the area of reddish-brown concave type spots, the necrotic degeneration was more extensive than in the oleocellosis type spot. In case of the convex spots (scab-like) phellem developed remarkably under the necrotic cells and the spots raised as the result of abnormal division of phellogen and the formation of abnormal meristem.These observations suggested that all the types of spots are merely the representative of symptoms recognizable in the developmental process of identical disease, the oleocellosis-like spot, although the causal agent of this disease has not so far been elucidated.

Comparison of Independent and Joint Decision-Making for Two Insurance Decisions

This paper considers two independent situations for each of which the outcome may be either no loss or a specified loss. It investigates the relationships between independent, sequential, and joint decision approaches to determining whether insurance should be purchased against either type of loss. All three approaches lead to identical decisions when the disutility function is linear or exponential, whether of a convex or concave type. With other functions such as a quadratic, the approaches may lead to different acts. The differences in the acts selected can be explained by the risk premium implicit in the disutility function. Business firms and individual persons are usually faced by a number of situations, for each of which a decision is to be made whether or not insurance is to be taken out to protect against the

Defoliation in the landscape trees

This report is a study on defoliaton in the different landscape trees.The times when the leaves begin to fall and they are all gone off the trees, and these defoliaton periads were respectively measured in the trees of 250 species.The progresses of becaming leafless in the trees of 200 Species were analysed by the diagramThe leaves began to fall at the end of September to the beginnig of octorber, and its natio was 85.4 percent of all trees.The times when leaves were all of the tree were different by species, extenting from September to January of next year.The average value of the defoliation periods was 55±5days, corresponding to 24.4 per cent. And theperiods extended from 25 to over 90 days.The progresses of defoliation were divided in 7different types; three linear (A. B. C, ), Convex, Concave and sigmoid type to ordinate.The most fraction among them was the convex type (72 species, 36 per cent.)

Monotone processes of convex and concave type

Monotone processes of convex and concave type

チタンおよびチタン合金の溶接部におよぼす超高波振動および磁気撹拌の影響

Pure Ti and Ti alloy are generally welded by TIG or MIG welding method. Sometimes fine porosities are detected in these welds by a X-ray examination. It seems that these porosities decrease the fatigue strength in some case. So it is important to protect the pure Ti and Ti alloy welds from these porosities. A study was carried out to make clear the effect of the ultrasonic vibration and the electromagnetic stirring on the porosities. At the same time, the effect of these two methods on the grain refinement, the bead shape, the penetration and the spatter were investigated. It was concluded that :(1) the ultrasonic vibration(i) The porosities of the TIG Welds were reduced by the ultrasonic vibration (9KC, 0.5-2 KW out put)(ii) The grains of the MIG Welds were made finer by the ultrasonic vibration (9KC, 0.5-2 KW out put)(2) the electromagnetic stirring(i) The porosities of the TIG Welds were reduced by the electromagnetic stirring. (DC or 60c/s AC and 2000 AT.)(ii) When using the coarse surface welding wire or with the machine oil on the groove surface, the porosities increase. But even in these cases by the electromagnetic stirring the porosities were considerably reduced.(iii) The grain of the TIG or MIG welds made finer by the electromagnetic stirring, especially in the Ti alloy MIG Welds.(iv) The frequency of the coil current was changed between DC and 60c/s AC The most effective frequency was around 8c/s.(v) In case of MIG Welding, the spatter increased with the intensity of the magnetic field.(vi) The bead shape was changed according to the frequency of the electromagnetic stirring. The bead was the concave type around 30 c/s, but tended to chahge into the convex type gradually with a decrease of the frequency.(vii) The penetration decreased with the intensity of the magnetic field, especially in case of MIG Welding.