화재연구의 현상

SUGAHARA,Shinnichi 한국화재소방학회 1988 한국화재소방학회논문지 Vol.2 No.1

NEW TREND OF FIRE SCIENCE AND EIRE PROTECTION TECHNOLOGY

Sugahara,Shinichi 한국화재소방학회 1997 한국화재소방학회 학술대회 논문집 Vol.1997 No.-

Firesafety design engineerings have been mainly derived from complicated rearrangement of descriptive specifications in codes or regulations through a great number of lessons from fire disasters. In this paper, the author refers to some recent developments in the field of building fire protection. At first, the author expresses his viewpoints concerning performance-based design codes, which have been popular throughout the world as a symbol of freedom from restricted usage of building materials and components prescrived in regulation or bylaws, in spite of some conflicts between objects-oriented design method and industrial mass production. Secondly, the author introduces several innovative fire protection methods adopted for large or void spaces in building complex. Finally, the author forcasts a next development of firesafety science and technology, aimed at securing personal safety in hyperscale urban areas.

Novel condylar repositioning method for 3D-printed models

Sugahara, Keisuke,Katsumi, Yoshiharu,Koyachi, Masahide,Koyama, Yu,Matsunaga, Satoru,Odaka, Kento,Abe, Shinichi,Takano, Masayuki,Katakura, Akira Korean Association of Maxillofacial Plastic and Re 2018 Maxillofacial Plastic Reconstructive Surgery Vol.40 No.-

Background: Along with the advances in technology of three-dimensional (3D) printer, it became a possible to make more precise patient-specific 3D model in the various fields including oral and maxillofacial surgery. When creating 3D models of the mandible and maxilla, it is easier to make a single unit with a fused temporomandibular joint, though this results in poor operability of the model. However, while models created with a separate mandible and maxilla have operability, it can be difficult to fully restore the position of the condylar after simulation. The purpose of this study is to introduce and asses the novel condylar repositioning method in 3D model preoperational simulation. Methods: Our novel condylar repositioning method is simple to apply two irregularities in 3D models. Three oral surgeons measured and evaluated one linear distance and two angles in 3D models. Results: This study included two patients who underwent sagittal split ramus osteotomy (SSRO) and two benign tumor patients who underwent segmental mandibulectomy and immediate reconstruction. For each SSRO case, the mandibular condyles were designed to be convex and the glenoid cavities were designed to be concave. For the benign tumor cases, the margins on the resection side, including the joint portions, were designed to be convex, and the resection margin was designed to be concave. The distance from the mandibular ramus to the tip of the maxillary canine, the angle created by joining the inferior edge of the orbit to the tip of the maxillary canine and the ramus, the angle created by the lines from the base of the mentum to the endpoint of the condyle, and the angle between the most lateral point of the condyle and the most medial point of the condyle were measured before and after simulations. Near-complete matches were observed for all items measured before and after model simulations of surgery in all jaw deformity and reconstruction cases. Conclusions: We demonstrated that 3D models manufactured using our method can be applied to simulations and fully restore the position of the condyle without the need for special devices.

Grease matrix as a versatile carrier of proteins for serial crystallography

Sugahara, Michihiro,Mizohata, Eiichi,Nango, Eriko,Suzuki, Mamoru,Tanaka, Tomoyuki,Masuda, Tetsuya,Tanaka, Rie,Shimamura, Tatsuro,Tanaka, Yoshiki,Suno, Chiyo,Ihara, Kentaro,Pan, Dongqing,Kakinouchi, Ke Nature Publishing Group 2015 NATURE METHODS Vol. No.

Serial femtosecond X-ray crystallography (SFX) has revolutionized atomic-resolution structural investigation by expanding applicability to micrometer-sized protein crystals, even at room temperature, and by enabling dynamics studies. However, reliable crystal-carrying media for SFX are lacking. Here we introduce a grease-matrix carrier for protein microcrystals and obtain the structures of lysozyme, glucose isomerase, thaumatin and fatty acid–binding protein type 3 under ambient conditions at a resolution of or finer than 2 Å.

Optimal Operation of Power Generation by Waste Using Actual Data

Sugahara, Hideo,Aoyagi, Yoshihiro,Kato, Masakazu 대한전기학회 2012 The Journal of International Council on Electrical Vol.2 No.2

Incineration is indispensable for burnable refuse disposal, and power generation by waste is environment-friendly and power system-friendly with synchronous generators. Optimal operation planning of incinerator plant is a key point to make much of this merit. We have studied on actual operational data of incinerator plant in Tokyo Metropolitan Area (TMA) applying GA. The subjects of these studies include improvement of GA program, rechecking of the basic data, etc. This paper proposes improved optimal method considering actual constraints of refuse disposal administration. As the result of improved GA program, it has become possible to increase generation energy more rationally.

A safe, stable, and convenient three-dimensional device for high Le Fort I osteotomy

Sugahara, Keisuke,Koyachi, Masahide,Odaka, Kento,Matsunaga, Satoru,Katakura, Akira Korean Association of Maxillofacial Plastic and Re 2020 Maxillofacial Plastic Reconstructive Surgery Vol.42 No.-

Background: Le Fort I osteotomy is a highly effective treatment for skeletal jaw deformities and is commonly performed. High Le Fort I osteotomy is a modified surgical procedure performed for improving the depression of the cheeks by setting the osteotomy higher than the conventional Le Fort I osteotomy. Developments in three-dimensional (3D) technology have popularized the use of 3D printers in various institutions, especially in orthognathic surgeries. In this study, we report a safe and inexpensive method of performing a high Le Fort I osteotomy using a novel 3D device and piezosurgery, which prevent tooth root injury without disturbing the operation field for patients with a short midface and long tooth roots. Results: A 17-year-old woman presented with facial asymmetry, mandibular protrusion, a short midface, and long tooth roots. We planned high Le Fort I osteotomy and bilateral sagittal split ramus osteotomy. Prevention of damage to the roots of the teeth and the infraorbital nerve and accurate determination of the posterior osteotomy line were crucial for clinical success. Le Fort I osteotomy using 3D devices has been reported previously but were particularly large in size for this case. Additionally, setting the fixing screw of the device was difficult, because of the risk of damage to the roots of the teeth. Therefore, a different surgical technique, other than the conventional Le Fort I osteotomy and 3D device, was required. The left and right parts of the 3D device were fabricated separately, to prevent any interference in the surgical field. Further, the 3D device was designed to accurately cover the bone surface from the piriform aperture to the infra-zygomatic crest with two fixation points (the anterior nasal spine and the piriform aperture), which ensured stabilization of the 3D device. The device is thin and does not interfere with the surgical field. Safe and accurate surgical performance is possible using this device and piezosurgery. The roots of the teeth and the infraorbital nerve were unharmed during the surgery. Conclusions: This device is considerably smaller than conventional devices and is a simple, low-cost, and efficient method for performing accurate high Le Fort I osteotomy.

The Merchandising Strategy of the Japanese Fashion Industry in 21st Century -Focused on the Case Study of Development and Application of New Technique -

Sugahara, Masahiro The Costume Culture Association 2000 Fashion, industry and education Vol.3 No.1

No Abstract(See Full Text)

Energy Utilization of Growing Chicks in Various Nutritional Conditions

Sugahara, Kunio Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.6

For the last two decades, energy utilization of growing chicks has been studied more and more. This paper focuses on the energy utilization estimated by the metabolizable energy (ME) values and the efficiency at which ME is used for growth of chicks under various nutritional environment. Degree of saturation of dietary fats is responsible for nitrogen-corrected apparent metabolizable energy (AMEn) of fats. The effect of dietary fat sources on heat production depends on the kind of unsaturated fatty acids as well as the degree of saturation. Medium chain triglyceride shows lower AME and net energy than long chain triglyceride. Phytase as feed additives increases the AME values of the diet along with improvement of the phosphorous utilization. Ostriches have higher ability to metabolize the energy of fiber-rich foodstuffs than fowls. Their higher ability seems to be associated with fermentation of fiber in the hindgut. Proportions of macronutrients in the diets have influenced not only the gain of body protein and energy but also the oxidative phosphorylation of the chicken liver. Essential amino acids deficiency reduces ME/GE (energy metabolizability) little, if any. Growing chicks respond to a deficiency of single essential amino acids with the reduction of energy retained as protein and increased energy retained as fat. Thus, energy retention is proportional to ME intake despite deficiency, and efficiency of ME utilization is not affected by deficiency of amino acids. Effect of oral administration of clenbuterol, a beta-adrenergic agonist, on the utilization of ME varies with the dose of the agents. Although the heat production related to eating behavior has been estimated less than 5% of ME, tube-feeding diets decreases HI by about 30%.

EFFECTS OF DIETARY TRYPTOPHAN LEVEL AND FOOD INTAKE ON ENERGY UTILIZATION BY MALE GROWING CHICKS

Sugahara, K.,Kubo, T. Asian Australasian Association of Animal Productio 1992 Animal Bioscience Vol.5 No.4

Two experiments involving comparative slaughter procedures were conducted to see if the decrease in total energy retention (ER) resulted from the decreased food intake in growing chicks fed on a diet containing tryptophan less than the requirement. Ad libitum-feeding a diet containing 50% of tryptophan of a control diet (1.5 g/kg) decreased body weight gain, apparent metabolizable energy intake (AMEI), ER and ER : AMEI ratio. When both the control diet and the 0.75 g/kg tryptophan diet were tube-fed at the two levels of food intake, body weight gain was significantly lower in chicks on the low tryptophan diet than in the control chicks at each level of intake. AME : gross-energy ratio decreased only when the low tryptophan diet was tube-fed at the higher level of intake. Energy retained as protein was significantly decreased by the low tryptophan level and reduction of food intake. Energy retained as fat was affected by food intake. ER and ER : AMEI ratio were unaffected by dietary tryptophan level and were proportional to AMEI. Heat increment of feeding was affected by neither tryptophan nor food intake. These results indicate that the decreased ER in chicks fed on the low tryptophan diet was due mainly to the decreased food intake and not to the decreased efficiency of ME utilization.

Web based IPM system for Japanese pear diseases in Japan. I. Farming Diary System for farmers′ decision making.

Sugahara, K.,Tanaka, K.,Laurenson, M.,Ohtani, T.,Watanabe, T.,Umemoto, S. The Korean Society of Plant Pathology 2001 Plant Pathology Journal Vol.17 No.6