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Search Results: 1 - 10 of 1577 matches for " Sadao Hayashi "
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Endovascular Treatment of Brachiocephalic and Subclavian Arterial Disease  [PDF]
Yasutaka Baba, Sadao Hayashi, Hiroyuki Yamamoto, Yutaka Imoto, Masayuki Nakajo
Open Journal of Radiology (OJRad) , 2013, DOI: 10.4236/ojrad.2013.31002

Objectives: To review our experience of stentgraft deployment for vascular aneurysm or pseudoaneurysm of the brachiocephalic or subclavian artery. Methods: Participants comprised 7 patients (4 men, 3 women; mean age, 61 years; range, 47 - 76 years) who underwent endovascular repair of brachiocephalic or subclavian arterial vascular lesions between July 2001 and November 2008. Causes of vascular lesions were: traffic accident, n = 4; infection, n = 2; and post-irradiation state of esophageal cancer, n = 1. Safety, technical success, and clinical follow-up were evaluated. Results: Stentgraft deployment was successful in all cases. No complications related to stent fracture were encountered during follow-up (up to 2308 days). One male patient with esophageal cancer died of rebleeding from the tracheostomy hole 13 days after treatment with size mismatch between the stentgraft and brachiocephalic artery. Conclusion: Stentgraft deployment represents acceptable treatment for the injured brachiocephalic artery or proximal side of the subclavian artery.

Visualization of utero-ovarian anastomoses: Comparison between patients with and without uterine fibroid  [PDF]
Yasutaka Baba, Sadao Hayashi, Shunichiro Ikeda, Masayuki Nakajo, Mitsushiro Yoshinaga, Tsutomu Douchi
Journal of Biomedical Science and Engineering (JBiSE) , 2012, DOI: 10.4236/jbise.2012.512A096

Purpose: To retrospectively review uteroovarian anastomosis (UOA) visualization during uterine artery embolization (UAE) in patients with or without uterine fibroids (UFs). Material and Methods: 43 patients underwent UAE for uterine fibroids (n = 23) and gynecological hemorrhage (n = 20). The frequency of angiographic visualization of UOAs was compared between the two groups and analyzed by the Fisher’s exact test. Results: Except for one patient with no right uterine artery, 85 uterine arteries were evaluated. Of these 85 uterine arteries, 23 UOA were recognized: 14 UOAs (58%) (right: 5 [21.7%], left: 9 [37.5%]) were visualized in 23 patients with UFs, and 9 UOAs (47.4%) (right: 4 [21%], left: 5 [26.3%]) were visualized in 20 patients with gynecological hemorrhage. In both groups, UOA was observed after UAE in one patient. Statistically significant difference was not observed for UOAs visualized between patients with or without UFs except a group of left UAE in patients with UFs (P = 0.036). Conclusion: The frequency of UOAs visualized during angiography was similar between patients with or without UFs. Therefore, UOA should be visualized carefully during UAE in patients with gynecological hemorrhage.

Efficacy of Uterine Artery Embolization for Patients with Postpartum Hemorrhage  [PDF]
Young Ho Choi, Yasutaka Baba, Shunichiro Ikeda, Young Ho So, Sadao Hayashi, Masayuki Nakajo
Open Journal of Radiology (OJRad) , 2013, DOI: 10.4236/ojrad.2013.32008

Purpose: To investigate the efficacy of uterine arterial embolization (UAE) in patients with post-partum hemorrhage (PPH). Materials and Methods: The subjects were 40 women (mean age, 33 years; age range, 21 - 42 years) who underwent UAE for PPH at two institutes from June 2001 to May 2011. The rates of clinical success (avoidance of hysterectomy) and complications were calculated. Differences in related factors between primary PPH and secondary PPH and between caesarean section and vaginal delivery were examined. The risk factors associated with hysterectomy were also examined. Results: The overall clinical success rate was 90% (93% of primary PPH, 77% of secondary PPH, and 87.5% of PPH with cesarean section), and the overall complication rate was 10%. There were significant differences in time to PPH (P < 0.0001) and in blood infusion after UAE (P = 0.0158) between subtypes of primary and secondary PPH and in blood infusion before UAE (P = 0.0052) between delivery methods. The significant factors associated with hysterectomy were cesarean section (P = 0.02), severe PPH (>1000 mL bleeding, P = 0.03), and embolization of non-uterine arteries (P = 0.02).

Revis?o por pares na Revista Brasileira de Educa??o Especial
Omote, Sadao;
Revista Brasileira de Educa??o Especial , 2005, DOI: 10.1590/S1413-65382005000300002
Abstract: the article discusses some issues relating to peer review in the evaluation of papers submitted to a scientific journal. such evaluation is accepted as necessary to assure the scientific quality of published articles, since the integrity of specialized literature is considered essential for science development. however, there are criticisms toward peer review, including long elapsed time between papers' submission and their publication, the time and energy spent by authors and reviewers, the subjectivity in evaluation and other problems that can introduce bias in the area. the brazilian journal of special education adopts blind review and has been quick to perform evaluation procedure. the mean time elapsed between receipt of manuscripts, passing by peer revision, consequent adjustment by authors and final acceptance, is about five and half months. in the specialized literature, there are suggestions like the elimination of evaluation and the publication of all submitted texts in electronic means, which is less expensive and more versatile than print, allowing readers to make their own evaluation. the analysis performed concludes that peer review is necessary. it points out the need to promote discussions about its own evaluation process, in order to develop more efficient procedures of quality control of articles published. it suggests that the effective evaluation is made by the scientific community, after the publication, by means of collective recognition of scientific value of the publication, through the impact it may cause on new investigations and knowledge construction in the area.
Caminhando com Dibs: uma trajetória de constru??o de conceitos em educa??o especial
Omote, Sadao;
Revista Brasileira de Educa??o Especial , 2010, DOI: 10.1590/S1413-65382010000300002
Abstract: the article is an answer to the paper published by piccolo, moscardini and costa in volume 16, number 1 of this journal, in which the authors analyzed my bibliographic production published in scientific journals. some facts about my personal life, intimately related to my academic path, are described so as to enable the radical understanding of my theoretical position. a large portion of the references supporting the article was published some decades ago. this is due to the fact that great theoretical contributions in human sciences emerged in the middle of the last century. this means that the excessive concern about how up to date my references were, when evaluated in terms of chronology, leads the researchers to choose to ignore the breadth and richness of the theoretical systematization of that period.
Innovative use of controlled availability fertilizers with high performance for intensive agriculture and environmental conservation
Sadao Shoji
Science China Life Sciences , 2005, DOI: 10.1007/BF03187129
Abstract: A variety of slow release fertilizers, controlled release (availability) fertilizers (CAFs), and stability fertilizers have been developed in response to the serious drawbacks of the conventional fertilizers since the early 1960’s. Of these fertilizers, CAFs which are coated with resin are consumed in the largest quantity in the world. Selecting CAFs with higher performance, the author will discuss about: 1) Innovation of agro-technologies for various field crops including new concepts of fertilizer application, 2) high yielding of field crops, 3) enhancing quality and safety of farm products, and 4) controlling the adverse effect of intensive agriculture on the environment.
The Sintering Mechanism of Aluminium and the Anodization of Aluminium Sintered Bodies
Sadao Okuma
Active and Passive Electronic Components , 1979, DOI: 10.1155/apec.6.23
Dehydrated Kitchen Waste as a Feedstuff for Laying Hens
Sadao Kojima
International Journal of Poultry Science , 2005,
Abstract: An experiment was conducted to determine the effects of dehydrated kitchen waste (DKW) product as a feedstuff for laying hens. Fresh food wastes of a retirement house were prepared for the experiment. This was mostly leftover food, plate scrapings and cooking residue. The kitchen waste was blended and dried by the temperature in the heater set at 80 to 85oC in which the product temperature reached 60 to 65oC. The DKW product contained 12.24% moisture, 15.14% Crude Protein, 5.33% crude fat, 2.34% crude fiber, 5.26% ash, 2.82% Ca, 0.29% P and 0.31% Na. A total of 40 laying hens were fed a control diet (diet 1) or one of three diets containing 12.5% DKW (diet 2); 25.0% DKW (diet 3); 50.0% DKW (diet 4). There were 10 birds per treatment and 5 birds per replicate. The diet with 50.0% DKW decreased egg weight (P< 0.001). There were no significant differences in egg production rate and feed conversion. The birds fed diets 1, 2 and 3 increased body weights during feeding period. The eggshell strength tended to weaken with increased DKW. The lightness (L*) of eggshell color was significantly higher with increasing DKW (P< 0.001), and the reverse was true for the redness (a*) of eggshell color. Roche color fan values decreased as DKW content increased. These results indicate that dehydrated kitchen wastes contains the nutritional value and that may be useful as feedstuffs for laying hens.
Development of Performance-Based Tunnel Evaluation Methodology and Performance Evaluation of Existing Railway Tunnels  [PDF]
Sadao Kimura, Takashi Kitani, Atsushi Koizumi
Journal of Transportation Technologies (JTTs) , 2012, DOI: 10.4236/jtts.2012.22013
Abstract: The concept of performance-based design, which mainly focuses on mechanical performance, has become the international standard, as in the case for ISO. The standardization of tunnel design has not been achieved because it requires integration of separate specialized fields, such as geotechnical engineering, structural engineering and concrete engineering. It is also required to clarify performance-based criteria for tunnel structures to suit specific use purposes (objectives), establish the concept of survey, planning, design, construction and maintenance based on such criteria, and develop proper management systems for operation and maintenance to suit specific tunnel use purposes. To this end, it is vital to develop a methodology for evaluating and verifying the performance of existing tunnels. This paper presents a new concept of performance requirements for tunnel structures and describes the method of quantitatively evaluating the total performance of existing tunnels in relation to the required performance, assuming the total performance to be based on the Analysis Hierarchy Process.
Asymmetry Index on Marginal Homogeneity for Square Contingency Tables with Ordered Categories  [PDF]
Kouji Tahata, Kanau Kawasaki, Sadao Tomizawa
Open Journal of Statistics (OJS) , 2012, DOI: 10.4236/ojs.2012.22023
Abstract: For square contingency tables with ordered categories, the present paper considers two kinds of weak marginal homogeneity and gives measures to represent the degree of departure from weak marginal homogeneity. The proposed measures lie between –1 to 1. When the marginal cumulative logistic model or the extended marginal homogeneity model holds, the proposed measures represent the degree of departure from marginal homogeneity. Using these measures, three kinds of unaided distance vision data are analyzed.
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