http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Narita, Takayoshi,Oshinoya, Yasuo,Hasegawa, Shinya The Korean Institute of Electrical Engineers 2011 The Journal of International Council on Electrical Vol.1 No.3
Thin steel plates are widely used in various industrial products. However, they have th e problems of flaws in the coating caused by contact support during transport and the deteriorati on of surface quality. As a solution to these problems, a noncontact transport of steel plates usin g electromagnetic force has been considered. However, there is a risk that side slipping or the dr opping of the plate may occur owing to inertial force because the levitation control system does not provide a restraint for the direction of travel. Therefore, we have proposed the addition of el ectromagnetic actuators to control the horizontal motion of a levitated steel plate. In addition, we have reported that it is possible to suppress the elastic vibration of the steel plate in the vertical direction using the electromagnetic actuators for horizontal positioning. In this paper, the effect of a magnetic field from the horizontal direction on the transport performance of a magnetically levi tated flexible steel plate is reported.
Microenvironment around active sites of a bacterial trypsin - like protease
Narita, Kozo 생화학분자생물학회 1985 BMB Reports Vol.12 No.4
A general procedure to analyze local environment of individual histidine residues in proteins is presented. This procedure is based on the hydrogen-tritium exchange reaction at the C3 position of the imidazole ring of histidine. Since the exchange reaction is pH-dependent, dissociation constant (pKa) of the imidazole of a histidine residue can be measured from the plot of the rate constant versus pH of the reaction medium. Deviation of pKa of the histidine residue in question from its intrinsic pKa suggests that the neighboring charged group is interacting with the histidine. The magnitude of the exchange rate constant corresponds to solvent accessibility of the imidazole ring of the histidine in the three-dimensional structure of the protein. Using these correlations local environment of individual histidine residues in ribonuclease T1 and a serine protease produced by Streptomyces ervthreus, whose three-dimensional structures are unknown, is discussed.
Utilization of desktop 3D printer-fabricated "Cost-Effective" 3D models in orthognathic surgery
Narita, Masato,Takaki, Takashi,Shibahara, Takahiko,Iwamoto, Masashi,Yakushiji, Takashi,Kamio, Takashi Korean Association of Maxillofacial Plastic and Re 2020 Maxillofacial Plastic Reconstructive Surgery Vol.42 No.-
Background: In daily practice, three-dimensional patient-specific jawbone models (3D models) are a useful tool in surgical planning and simulation, resident training, patient education, and communication between the physicians in charge. The progressive improvements of the hardware and software have made it easy to obtain 3D models. Recently, in the field of oral and maxillofacial surgery, there are many reports on the benefits of 3D models. We introduced a desktop 3D printer in our department, and after a prolonged struggle, we successfully constructed an environment for the "in-house" fabrication of the previously outsourced 3D models that were initially outsourced. Through various efforts, it is now possible to supply inexpensive 3D models stably, and thus ensure safety and precision in surgeries. We report the cases in which inexpensive 3D models were used for orthodontic surgical simulation and discuss the surgical outcomes. Review: We explained the specific CT scanning considerations for 3D printing, 3D printing failures, and how to deal with them. We also used 3D models fabricated in our system to determine the contribution to the surgery. Based on the surgical outcomes of the two operators, we compared the operating time and the amount of bleeding for 25 patients who underwent surgery using a 3D model in preoperative simulations and 20 patients without using a 3D model. There was a statistically significant difference in the operating time between the two groups. Conclusions: In this article, we present, with surgical examples, our in-house practice of 3D simulation at low costs, the reality of 3D model fabrication, problems to be resolved, and some future prospects.
Pseudo-Schwarzian Tensor of Weyl Manifolds
Fumio Narita KYUNGPOOK UNIVERSITY 2001 Kyungpook mathematical journal Vol.41 No.1
We define the pseudo-Schwarzian tensor of a Weyl manifold and we show that the pseudo-Schwarzian tensor is invariant by a Möbius change of metric. Next, we give some properties of the pseudo-Schwarzian tensor.
Riemannian Submersions fromk-Generalized Hopf Manifolds
Fumio Narita KYUNGPOOK UNIVERSITY 1997 Kyungpook mathematical journal Vol.37 No.2
The purpose of the present paper is to study the differential geometric properties of Riemannian submersions from a k-generalized Hopf manifold with connected complex totally geodesic fibers
Conformal Transformations of a Weyl Manifold
Fumio Narita,Takafumi Satou 경북대학교 자연과학대학 수학과 2004 Kyungpook mathematical journal Vol.44 No.1
For a conformal transformation of a Weyl manifold, we study the properties of the pseudo-Schwarzian tensors and the Ricci curvatures. We give some invariants which do not vary under conformal transformations or Mobius transformations.