Electro-chemical Stabilization of Ground under Foundation

In this paper a summary is given of the principles of the electro-chemical stabilization applied to weak ground under foundation of structures, the reasons for the application, the design and the results of the practice

A Study on the Analysis of Land Slide in the Kashio District

A land slide occurred at Kashio Town near Nigawa Railway Station on the Imazu line of the Hankyu Electric Railway Co. on July 13th, 1951. During this landslide the foundation rose. The inclined surface which had kept balance during the last ten and over years slid, though little change was noted in the external condition. The authors investigated the cause of the land slide from the physico-chemical standpoint

Analysis of the Variation of Unconfined Ground-Water Level Due to the Change of Water Level in a Surface Reservoir

In this paper, an analytical method is proposed for calculating the variation of unconfined ground-water level in steady state due to the change of water level in a lake or a river and presents some examples which deal with the variation of ground-water level in the southeast alluvial plain of Lake Biwa. In most alluvial plains, the compositions of the strata are so complicated that the depth, the permeability and the ground-water flow can not be surveyed continuously. Then even if some pumping tests and some observations of ground-water level are carried out, it is very difficult or almost impossible to comprehend the behaviors and to calculate the variation accurately by means of a normal treatment. Authors propose to adopt the conception “quasi-depth” which means the permeable capacity into this analytical method. Only the “quasi-depth” is variable and the other elements can be treated as constant factors in analyzing the variation of ground-water level numerically and graphically. The most advantageous point for using the “quasi-depth” in this method is that it is not necessary to measure the depth and the permeability continuously except for the depth at any selected point along a longitudinal section

Vogt-Koyanagi-Harada Syndrome in Two Patients with Immunoglobulin A Nephropathy

We describe herein 2 patients who developed Vogt-Koyanagi-Harada syndrome in the course of renal biopsy-proven immunoglobulin A (IgA) nephropathy. A 61-year-old man with an 11-year history of IgA nephropathy and a 16-year history of thyroiditis, and a 56-year-old man with a 5-year history of IgA nephropathy developed Vogt-Koyanagi-Harada syndrome. At the time of the eye disease presentation, IgA nephropathy was stable without corticosteroids in both patients. Vogt-Koyanagi-Harada syndrome was successfully treated with intravenous administration of prednisolone tapered from 200 mg daily. Vogt-Koyanagi-Harada syndrome is associated with IgA nephropathy, suggesting a similar autoimmune mechanism for both diseases

Weathering of the Granite Soils and Its Influence on the Stability of Slope

The cutting slopes in granite soil regions are exposed in air and subjected to temperature change and water infiltration immediately after cutting. Then the strength of the soil mass is lowered successively up to failure point. In order to clarify the cause of the phenomena, the authors tried to examine a slope selected in a granite soil region by means of physical, chemical and mineralogical analysis. According to the results obtained from the above experiments, it is concluded that the original ground before cutting can be classified into three zones with characteristic clay minerals and the more the ground is weathered initially, the more rapidly their strength decreases excepting for the severely weathered part. These results are considered to depend largely on the fact that the soil grains weathered originally in the long period of time are relatively sensitive or unstable to chemical and mechanical actions

Clinical factors underlying a single surgery or repetitive surgeries to treat superior oblique muscle palsy

The purpose of this study is to know clinical factors underlying either a single surgery or repetitive surgeries, required to treat superior oblique muscle palsy. Retrospective review was made on 246 consecutive patients with idiopathic (n = 212) or acquired (n = 34) superior oblique muscle palsy who underwent surgeries in 8 years at one institution. Idiopathic palsy included congenital and decompensated palsies while acquired palsy included traumatic and ischemic palsies. Clinical factors, compared between groups with a single surgery (n = 203) and two or more surgeries (n = 43), were surgical methods, sex, age at surgery, horizontal, vertical, and cyclotorsional deviations, and stereopsis at near fixation. Inferior oblique muscle recession on paretic side was chosen in about 60% of the single-surgery and repetitive-surgery group as an initial surgery, followed by inferior rectus muscle recession on non-paretic side. The age at surgery was significantly older, vertical and cyclotorsional deviations were significantly larger in the repetitive-surgery group, compared with the single-surgery group (P = 0.01, P < 0.001, P = 0.02, Mann-Whitney U-test, respectively). The 95% confidence interval of vertical deviations was 15-17 prism diopters in the single-surgery group and 23-28 prism diopters in the repetitive surgery group. Significant differences in vertical deviations were replicated also in subgroups of patients with either idiopathic or acquired palsy. In conclusions, the 95% confidence interval of vertical deviations, determined by alternate prism and cover test, would be used as a common benchmark for predicting either a single surgery or repetitive surgeries, required to treat idiopathic and acquired superior oblique muscle palsy, in the process of obtaining the informed consent

Bilateral Optic Disc Anomalies Associated with PAX2 Mutation in a Case of Potter Sequence

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Analysis of skin graft survival using green fluorescent protein transgenic mice

Skin grafting has become a basic and established operation technique ; however, it is not clear how skin grafts adapt to recipient beds and replace their functions. In this study, we analyzed the origin of cells in adapted transplants by using green fluorescent protein (GFP) transgenic mice, which emits green fluorescence in the whole body. The dorsal skins of GFP transgenic mice were transplanted to the back of wild-type mice. Similarly, wild-type skins were transplanted to the back of GFP transgenic mice. Since transplantation with full thickness back skin was not successful due to severe immunorejection, tail skins, which contain fewer epidermal Langerhans cells, were used for the experiments. Six months after transplantation, immunohistochemical analysis of the grafts revealed that tissues derived from ectodermal origin such as the epidermis, hair follicles, and sebaceous glands survived in transplanted grafts, but that other tissues such as the dermis, nerves and blood vessels are partly replaced by tissues from recipient beds. Our results further demonstrated that transplantation analyses with GFP transgenic mice could be a useful approach to study the origin of cells in transplants