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Cases of pediatric intra-abdominal solid organ injury induced by blunt trauma experienced over a 15-year period at two centers in Japan

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World Journal of Pediatric Surgery 2023年第3期6卷 168-174页

作者： Mayu Matsui Koshiro Sugita takafumi kawano Nanako Nishida Ayaka Nagano Masakazu Murakami Keisuke Yano Toshio Harumatsu Shun Onishi Koji Yamada Waka Yamada Mitsuru Muto Tatsuru Kaji Satoshi Ieiri Department of Pediatric Surgery Kagoshima City HospitalKagoshimaJapan Department of Pediatric Surgery Research Field in Medical and Health SciencesMedical and Dental AreaResearch and Education AssemblyKagoshima UniversityKagoshimaJapan Department of Pediatric Surgery Kurume University School of MedicineKurumeJapan

Objective The present study attempts to clarify the clinical features of pediatric intra-abdominal solid organ injury at two *** The injured organ,patient age,sex,injury grade,imaging findings,intervention,length of hospital stay,and complications were retrospectively reviewed using medical records at two centers from 2007 to *** There were 25 cases of liver injury,9 of splenic injury,8 of pancreatic injury,and 5 of renal *** mean age of all patients was 8.6±3.8 years old,with no difference between organ injury *** intervention was performed in four cases of liver injury(16.0%)and one case of splenic injury(11.1%),and surgery was performed in two cases of liver injury(8.0%)and three cases of pancreatic injury(37.5%).All other cases were treated *** included adhesive ileus in one case of liver injury(4.0%),splenic atrophy in one case of splenic injury(11.1%),pseudocysts in three cases of pancreatic injury(37.5%),atrophy of the pancreatic parenchyma in one case of pancreatic injury(12.5%),and urinoma in one case of renal injury(20.0%).No mortalities were *** Pediatric patients with blunt trauma had favorable outcomes at two pediatric trauma centers covering a broad medical area,including remote islands.

关键词： pediatric trauma injury

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Analysis of the risk of ovarian torsion in 49 consecutive pediatric patients treated at a single institution

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World Journal of Pediatric Surgery 2019年第2期2卷 1-5页

作者： Koshiro Sugita takafumi kawano Mukai Motoi Toshihiro Muraji Shun Onishi Tomoe Moriguchi Koji Yamada Waka Yamada Ryuta Masuya Seiro Machigashira Kazuhiko Nakame Tatsuru Kaji Satoshi Ieiri Department of Pediatric Surgery Kagoshima University Graduate School of Medicine and Dental SciencesKagoshimaJapan Department of Pediatric Surgery Kirishima Medical CenterKirishimaJapan

Purpose An early diagnosis of ovarian torsion is sometimes difficult due to variable clinical symptoms and non-specific imaging *** retrospectively reviewed patients with pediatric ovarian masses manifesting *** Fifty-eight ovarian masses(55 episodes)in 49 non-neonatal patients treated from April 1984 to March 2017 were retrospectively *** Mann-Whitney U test and Fisher’s exact test were used for the statistical *** The median age of these 55 episodes was 10.5 years old(range 1.0-23.0).Thirty-three patients presented with abdominal ***-five tumors and 13 cystic masses were resected and diagnosed pathologically(50 benign and 8 malignant).Torsion was identified in 15 cases(25.9%)at *** torsion masses were all benign,and 8 ovaries(53.3%)were successfully *** the torsion cases with the non-torsion cases,only the white cell count was significantly higher in the torsion cases(p=0.0133)and in the patients presented with abdominal pain(p=0.0068).The duration of abdominal pain was significantly shorter in ovary preserved cases than in oophorectomy *** The white blood cell may be a helpful indicator of the presence of torsion as well as the need for surgery.

关键词： torsion analysis. white

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使用风扇改善大型电动机的冷却性能

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电气牵引 2007年第2期 33-38页

作者： takafumi Nakahama Debasish Biswas Koichiro kawano Fuminori Ishibashi 郭纯成（译者）马云鹏（校者）

本文对大容量开启式电动机采用低风阻结构，和前扫式倾斜叶片的轴流电扇的冷却性能进行了研究。电动机轴流风扇的风阻比普通风扇产生气流的阻力要大得多。气流在叶片表面明显地分离，并产生很大的流体噪声。我们将电动机的内部风阻降低... 详细信息

本文对大容量开启式电动机采用低风阻结构，和前扫式倾斜叶片的轴流电扇的冷却性能进行了研究。电动机轴流风扇的风阻比普通风扇产生气流的阻力要大得多。气流在叶片表面明显地分离，并产生很大的流体噪声。我们将电动机的内部风阻降低，采用了前扫式倾斜叶片轴流式风扇。通过风道实验确认，该组合件的流量与传统的通风结构和轴流风扇比较，明显地提高了。以该流量围绕着叶片流动进行过数字流体分析。空气沿叶片表面流动没有出现分流的现象。流量显象实验也观察到了这种现象。后来用一台低风阻结构和前扫式倾斜叶片的轴流式风扇的实际电动机进行实验表明，与传统的电机比较，冷却空气的流量提高了80％，定子绕组的平均温升降低了30％。因此冷却性能得到了大大的改善。

关键词：冷却风扇流体流动电动机数字分析温度测量通风显象

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