检索结果-南通市图书馆

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

N_2O对全球变暖和臭氧层破坏的影响

世界环境 1990年第2期 12-16页

作者： Motonori tamaki 姚铃铃 Pollution Research Institute Hyogo Japan.

随着大气污染的加剧,将不可避免地导致全球规模的环境破坏。例如,氮氧化物和硫氧化物可造成酸雨、氟里昂可导致臭氧层破坏、二氧化碳等可导致全球温度上升(温室效应)。但是,大气、水或气候的变化并不是由一种或两种物质单独造成的,而是... 详细信息

随着大气污染的加剧,将不可避免地导致全球规模的环境破坏。例如,氮氧化物和硫氧化物可造成酸雨、氟里昂可导致臭氧层破坏、二氧化碳等可导致全球温度上升(温室效应)。但是,大气、水或气候的变化并不是由一种或两种物质单独造成的,而是由多种化学成分复杂作用的结果。这些成分对某些现象有害,而对另外现象可能有利。为了切实掌握今后全球环境变化的模式,首先应严格区分当前科学上已经证实的事实和对未来的各种推测。具体说,应正确掌握有关全球规模的各种化学成分的化学性质、物理性质、其发生源及消失过程、环境中的浓度及分布状态,以及今后的增减情况。

关键词：臭氧层破坏 N2O 全球变暖全球规模全球温度环境变化环境破坏化学成分氟里昂增减情况

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

今后害虫防治剂的生物学设想

农药科学与管理 1988年第3期 46-47页

作者： Yoshio tamaki 高中琪日本国家农业环境科学研究所

自公元前900年中国使用雄磺(砒霜、硫化物)防治庭院害虫以来,人类为了食物和生存,用自己手中的有毒物质同害虫进行了长期的斗争.直到40年代初无机化合物如砷、汞、铜、铅和钡,天然植物产品如烟草、松脂以及除虫菊和鱼藤粉还是重要的害... 详细信息

自公元前900年中国使用雄磺(砒霜、硫化物)防治庭院害虫以来,人类为了食物和生存,用自己手中的有毒物质同害虫进行了长期的斗争.直到40年代初无机化合物如砷、汞、铜、铅和钡,天然植物产品如烟草、松脂以及除虫菊和鱼藤粉还是重要的害虫防治剂.采用“第二代杀虫剂”包括有机磷酸酯类、氨基甲酸酯类、有机氯类和合成除虫菊酯类,对提高粮食产量作出

关键词：害虫防治病虫害防治化学防御生物学

稻米品质形成的生理生态研究：Ⅳ.成熟时期及成熟条件对精？..

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

农业科技情报（西南农学院） 1991年第3期 40-48页

作者： tamaki,M 李祥洲

Basket pattern blood flow signals discovered in a case of splenic hamartoma by power Doppler ultrasonography

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2005年第33期11卷 5235-5238页

作者： Shigeo Nakanishi Katsuya Shiraki Kouji Yamamoto Takeshi Nakano Mutsumi Koyama Takatsugu Yano Takayuki Sanda Hisao tamaki Tadanori Hirano Kazuo Fukudome Akinori Ishihara First Department of Internal Medicine Mie University School of Medicine Tsu Mie 514-8507 Japan Department of Internal Medicine Matsusaka General Hospital Matsusaka Mie 102 Japan First Department of Internal Medicine Mie University School of Medicine TsuMie 514-8507Japan Department of Internal Medicine Matsusaka General Hospital Matsusaka Mie 102 Japan Department of Surgery Matsusaka General Hospital Matsusaka Mie 102 Japan Tadanori Hirano Department of Radiology Matsusaka General Hospital Matsusaka Mie 102 Japan First Department of Internal Medicine Mie University School of Medicine Tsu Mie 514-8507 Japan Department of Pathology Matsusaka General Hospital Matsusaka Mie 102 Japan

We present the gray-scale ultrasonography （GSUS）, power Doppler ultrasonography （PDUS）, abdominal computed tomography （CT）, and magnetic resonance imaging （MRI） findings for a case of splenic hamartoma in a 27-year-old man, showing a φ 50 mm homogeneous, iso- and hypo-echoic splenic mass with evidence of a small plural cystic lesion. This splenic hamartoma showed increased vascularity on power Doppler sonograms. PDUS showed multiple circular blood flow signals inside the mass （i.e. a basket pattern）, which was consistent with the small plural cystic lesion shown by GSUS. Spectral analysis also confirmed arterial and venous flow. CT scans showed that the mass had lowdensity relative to the normal spleen and MRI showed that the mass was isodense, relative to the normal spleen. Therefore, CT and MRI are not useful for the diagnosis of splenic hamartoma. Ultrasonography can be used to diagnose splenic hamartoma without administration of a contrast matedal and therefore is an indispensable method for the diagnosis of splenic hamartoma.

关键词： Splenic hamartoma Ultrasonography Basketpattern

Effects of estradiol and progesterone on the proinflammatory cytokine production by mononuclear cells from patients with chronic hepatitis C

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2008年第14期14卷 2200-2207页

作者： Ying Yuan Ichiro Shimizu Mi Shen Eriko Aoyagi Hidetaka Takenaka Tatuzo Itagaki Mari Urata Katsutaka Sannomiya Nao Kohno Katsuyoshi tamaki Masayuki Shono Tetsuji Takayama Jiangsu Key Laboratory of Neuroregeneration Nantong University Nantong 226001 Jiangsu Province China Department of Digestive and Cardiovascular Medicine Institute of Health Biosciences Tokushima 7708503 Japan Support Center for Advanced Medical Sciences University of Tokushima Graduate School Tokushima 7708503 Japan

AIM:To investigate the effects of estradiol (E2) and progesterone on the unstimulated and oxidative stressstimulated production of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-8, and macrophage chemotactic protein (MCP)-1 by peripheral blood mononuclear cells (PBMCs) from patients with chronic hepatitis C and healthy controls. METHODS:The PBMCs were separated from agematched 72 males and 71 females with and without chronic hepatitis C, who were divided into two groups based on a mean menopausal age of 50 years. Oxidative stress was induced by hydrogen peroxide in the cells incubated in serum-free media. Cytokines in the culture supernatant were measured by an enzyme-linked immunosorbent assay. RESULTS:The highest levels of the spontaneous production of TNF-α, IL-1β, IL-8, and MCP-1 by the unstimulated PBMCs were in the older male patients with chronic hepatitis C and the lowest levels were in the premenopausal female healthy controls. E2 inhibited the cytokine production by the unstimulated PBMCs from the older male and post-menopausal female patients, which was further stimulated by progesterone. The exposure to hydrogen peroxide in the PBMCs from the younger male and pre-menopausal female healthy subjects induced the production of cytokines. The change rates of the hydrogen peroxide-stimulated cytokine production were suppressed by E2 and enhanced by progesterone. CONCLUSION:These findings suggest that E2 may play a favorable role in the course of persistent liver injury by preventing the accumulation of monocytes-macrophages and by inhibiting proinflammatory cytokine production, whereas progesterone may counteract the favorable E2 effects.

关键词： Estradiol Progesterone Mononuclear cell Proinflammatory cytokine Chemokine

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Neuroscience 2013年第3期3卷 142-146页

作者： Kengo Yotani Hiroyuki tamaki Hiroki Nakamoto Atsumu Yuki Hikari Kirimoto Koji Kitada Futoshi Ogita Shiro Mori Ishikawa National College of Technology Ishikawa Japan National Center for Geriatrics and Gerontology Obu Japan National Institute of Fitness and Sports in Kanoya Kagoshima Japan Niigata University of Health and Welfare Niigata Japan

The objective of the present study was to assess the relationship of response time and peak latency of P300 with a simple-reaction task. Seven male subjects who were experienced players in decision-making sports were included. Two main findings were noted. First, the P300 latencies of Fz and Pz were correlated with visuo-motor related time. Second, in terms of latencies of visual evoked potentials, the correlations were observed only between Oz-P2 latency and visuo-motor related time. These results suggest that the length of visuo-motor related time is related to the processing involved in the higher order brain site involving specific processing in the visual cortex.

关键词： Simple-Reaction Task P300 Visual Evoked Potentials Athletes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

日本各地雨水年平均pH值的计算法

世界环境 1986年第4期 13-15页

作者： Motonon tamaki Takatoshi HIRAKI 张杰 Environment Protection Research Institute of Hiyogo Province Japan. Environment Protection Research Institute of Hiyogo Province Japan.

前言目前,酸度对雨水水质的影响已引起人们的关注。pH值则是衡量雨水水质及雨水酸度的主要指标。由于雨水的采集方法及分析平均值的计算方法各有不同,这佯,雨水的平均pH值也有所不同。至今日本还没有一个在同一标准下计算各地区雨水pH... 详细信息

前言目前,酸度对雨水水质的影响已引起人们的关注。pH值则是衡量雨水水质及雨水酸度的主要指标。由于雨水的采集方法及分析平均值的计算方法各有不同,这佯,雨水的平均pH值也有所不同。至今日本还没有一个在同一标准下计算各地区雨水pH值的统一方法。在探讨雨水平均pH值计算方法的同时,此文将以计算结果为依据,推断一下日本各地区雨水的年平均pH值及其分布情况。

关键词：算术平均值降雨量雨水计算方法日本年平均 pH

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

全球构造和边缘盆地的形成：西太平洋的作用

国外地质（北京） 1992年第5期 1-5页

作者： tamaki,K 李春庚

OBSERVATION OF THE EFFECTS OF ZHENXUANYIN ON CBF OF RATS WITH VERTEBROARTERIAL ISCHEMIA AND CBF OF HEALTHY RATS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 1999年第2期13卷 133-136,141页

作者： Wang Jingyi,Yasuhiro MagataRadio Pharmacy Department, Faculty of Medicine in Kyoto University., Naoya Hattori  ,Seok Rye ChoiNeurology Department, Faculty of Medicine in Kyoto University., Yoshiharu Yonekura , Nagara tamaki , Fumiko Tanaka Department of Neurology Xi'an Chinese Traditional Med. Hosp. Xi'an 710001 China

In order to observe the improvement effects of Zhenxuanyin (ZXY) to the rats vertebral artery infarction, it's prevention ability to the Pulsinelli's 4 vessel occlusion (4VO) rats model and it's influences to the normal rats brain. The infarction of the rats vertebral artery (vertebral 2 VO) and the 4VO rats model were achieved through electrocoagulation. 123 I IMP was used to trace cerebral blood flow (CBF). Except of cerebral cortex, the blood flow of each region decreased. Dosage of ZXY at 0 3 g/kg was able to normalize the decreased blood flows in cerebral regions. Healthy rats were medicated at a daily 0 3 g/kg and 1 g/kg dosage of ZXY. At the end of 1 week, they were made into 4VO model rats. No effective prevention effect was found. ZXY had no obvious effect on the CBF of normal rats. Vertebral 2 vessel occlusion is similar to clinical mild cerebral inefficient blood supply, therefore closer to the model of clinical VID. ZXY is able to normalize this incomplete compensation state, which is consistent with the curative effect on Pulsinelli's 4VO model rats. The best curative dosage of ZXY does not improve normal rats' CBF implied that ZXY used to cure regional cerebral ischemia at the acute stage does not dilate the cerebral blood vessel in the normal region, thus does not cause blood stealing in the brain 〔5〕 , Therefore, ZXY is an ideal CBF improving agent.

关键词： cerebral ischemia/TCM therapy vertebral 2VO Zhenxuanyin (ZXY) ^(123)I-IMP

维普期刊数据库