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46 results on '"Kaneda, Satoshi"'

6. Criteria for ultrasound diagnosis of deep venous thrombosis of lower extremities

Author

Tanaka, Sachiko, Nishigami, Kazuhiro, Taniguchi, Nobuyuki, Matsuo, Hiroshi, Hirai, Toshiko, Kaneda, Satoshi, Ogasawara, Masafumi, Satoh, Hiroshi, Tobe, Hiroyuki, and Members of The Subcommittee for Preparing Guidelines for Ultrasound Diagnosis of Venous Thrombosis of Lower Extremities of The Terminology and Diagnostic Criteria Committee, Japan Society of Ultrasonics in Medicine

Published
2008
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10. Recent progress in ecological studies of soil fauna

Author

Hasegawa, Motohiro, Fujii, Saori, Kaneda, Satoshi, Ikeda, Hiroshi, Hishi, Takuo, Hyodo, Fujio, and Kobayashi, Makoto

Subjects
Carbon sequestration, Decomposition, Process of assemblage formation, Trait-based approach, Food habit analysis
Abstract

Progress in ecological studies of soil fauna includes studies of the role and effects of soil fauna on decomposition and soil carbon dynamics in relation to global environmental changes, the introduction of molecular biology approaches to such studies, feeding habit analysis using stable isotopes, trait-based analysis of community ecology, and fine-scale experimental studies on the above/below ground relationship in ecosystems. In relation to this progress, six topics were reviewed: the function of soil fauna in the decomposition process; carbon sequestration in earthworms; the process of assemblage formation in earthworms; a trait-based approach to the collembolan community; food habit analysis using stable isotopes; and soil faunal impacts on plants.

Published
2017

40. Automated Analysis of Two-Dimensional Positions and Body Lengths of Earthworms (Oligochaeta); MimizuTrack.

Author

Kodama, Naomi, Kimura, Toshifumi, Yonemura, Seiichiro, Kaneda, Satoshi, Ohashi, Mizue, and Ikeno, Hidetoshi

Subjects
TWO-dimensional models, EARTHWORMS, OLIGOCHAETA, ECOSYSTEMS, SOIL physical chemistry, IMAGE processing
Abstract

Earthworms are important soil macrofauna inhabiting almost all ecosystems. Their biomass is large and their burrowing and ingestion of soils alters soil physicochemical properties. Because of their large biomass, earthworms are regarded as an indicator of “soil heath”. However, primarily because the difficulties in quantifying their behavior, the extent of their impact on soil material flow dynamics and soil health is poorly understood. Image data, with the aid of image processing tools, are a powerful tool in quantifying the movements of objects. Image data sets are often very large and time-consuming to analyze, especially when continuously recorded and manually processed. We aimed to develop a system to quantify earthworm movement from video recordings. Our newly developed program successfully tracked the two-dimensional positions of three separate parts of the earthworm and simultaneously output the change in its body length. From the output data, we calculated the velocity of the earthworm's movement. Our program processed the image data three times faster than the manual tracking system. To date, there are no existing systems to quantify earthworm activity from continuously recorded image data. The system developed in this study will reduce input time by a factor of three compared with manual data entry and will reduce errors involved in quantifying large data sets. Furthermore, it will provide more reliable measured values, although the program is still a prototype that needs further testing and improvement. Combined with other techniques, such as measuring metabolic gas emissions from earthworm bodies, this program could provide continuous observations of earthworm behavior in response to environmental variables under laboratory conditions. In the future, this standardized method will be applied to other animals, and the quantified earthworm movement will be incorporated into models of soil material flow dynamics or behavior in response to chemical substances present in the soil. [ABSTRACT FROM AUTHOR]

Published
2014
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44. 膀胱平滑筋腫の2例

Author

TSUKAMOTO, Takuji, HASEGAWA, Shintaro, TADOKORO, Shigeru, KODERA, Kenichi, KANEDA, Satoshi, and JITSUKAWA, Masamichi

Subjects
Leiomyoma, Bladder, Submucosal tumor, 494.9, urologic and male genital diseases, female genital diseases and pregnancy complications
Abstract

Two cases of leiomyoma of the bladder are reported. The first case was a 79-year-old female who presented with gross hematuria and frequent urination. Cystoscopy disclosed a large tumor covered by intact mucosa. This lesion was further evaluated by ultrasound, and was thought to be a submucosal tumor of the bladder. The second case was a 43-year-old female who was referred for further investigation of left giant hydronephrosis. During the investigation, submucosal tumor was incidentally found. Concerning the etiology of the hydronephrosis, left ureteral stenosis due to a previous gynecological operation was suspected. These lesions proved to be leiomyoma of the bladder histologically, and were successfully enucleated. Difficulty in diagnosis of this disease and controversy as to the optimal treatment prompted us to report these cases and to review 68 cases reported in the Japanese literature.

Published
1986

45. Imagings of Small Renal Cell Carcinomas

Author

タニモト, アキヒコ, イド, クニオ, エンドウ, マサヒロ, ヒサ, ナオフミ, カネダ, サトシ, ヒラマツ, キョウイチ, Tanimoto, Akihiko, Ido, Kunio, Endou, Masahiro, Hisa, Naofumi, Kaneda, Satoshi, Hiramatsu, Kyoichi, 谷本, 伸弘, 井戸, 邦雄, 遠藤, 雅裕, 久, 直史, 金田, 智, 平松, 京一, タニモト, アキヒコ, イド, クニオ, エンドウ, マサヒロ, ヒサ, ナオフミ, カネダ, サトシ, ヒラマツ, キョウイチ, Tanimoto, Akihiko, Ido, Kunio, Endou, Masahiro, Hisa, Naofumi, Kaneda, Satoshi, Hiramatsu, Kyoichi, 谷本, 伸弘, 井戸, 邦雄, 遠藤, 雅裕, 久, 直史, 金田, 智, and 平松, 京一

Published
1985

46. Effects of collembola on nutrient cycling and microbial biomass on intact soil microcosm.

Author

Kaneda, Satoshi and Kaneko, Nobuhiro

Subjects
COLLEMBOLA, NUTRIENT cycles, MICROCOSM & macrocosm, SOILS, BACTERIA
Abstract

(Jpn. J. Soil Sci.Plant Nutr., 77, 299–306, 2006) The effects of Collembola ( Folsomia candida Willem) on nutrient cycling, microbial biomass, and soil respiration were studied using intact soil microcosms. Intact soil microcosms (dia. 10·6 cm and depth 15 cm) were taken from pine forest soil, and were divided into four treatments · the unmanipulated control and three Collembolan manipulations in which microcosms were defaunated by deep-freezing, and then F. candida were introduced at three densities (0, 50, 100 per microcosm). The microcosms were incubated on forest floor with a roof. At 3- to 4-week intervals the microcosms were irrigated with deionized water for analyses of nutrients (Na+, K+, NH4+, Ca2+, Mg2+, Cl−, NO3−, SO42−) in the leachate. Soil respiration was measured using an infrared gas analyser. After 13 and 34 weeks of exposure, microcosms were destructively sampled. Collembola did not significantly affect microbial biomass C, N, and P nor soil respiration. Because the experiment was started in winter, nutrient leaching increased from spring to summer with increasing microbial activity. At the end of the experiment, leached nitrate from microcosms was significantly different between the 0 and 50 Collembolan treatments. Total established Collembolan biomass was under 4% of the soil microbial biomass in the microcosms, while manipulation of Collembola affected soil nitrogen dynamics at high microbial and collembolan activity. [ABSTRACT FROM AUTHOR]

Published
2006
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