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排序方式: 共有43条查询结果,搜索用时 15 毫秒
1.
Jun Murotsuki MD Shigeki Uehara Kunihiro Okamura Akira Yajima Kazuhiro Murakami 《黑龙江环境通报》1994,14(7):637-639
A case of type III congenital cystic adenomatoid malformation of the lung was successfully diagnosed prenatally by fetal lung biopsy. We performed this procedure at 22 weeks of gestation, using a biopsy gun system under ultrasound guidance. The pregnancy was undisturbed by the procedure but as the condition was incompatible with life, an abortion was performed. The diagnosis was confirmed at post-mortem examination. Fetal lung biopsy appears to be a useful method for prenatal diagnosis of fetal lung disorders. 相似文献
2.
3.
Current status and research on E-waste issues in Asia 总被引:2,自引:1,他引:2
Atsushi Terazono Shinsuke Murakami Naoya Abe Bulent Inanc Yuichi Moriguchi Shin-ichi Sakai Michikazu Kojima Aya Yoshida Jinhui Li Jianxin Yang Ming H. Wong Amit Jain In-Suk Kim Genandrialine L. Peralta Chun-Chao Lin Thumrongrut Mungcharoen Eric Williams 《Journal of Material Cycles and Waste Management》2006,8(1):1-12
Rapid economic growth in Asia and the increasing transboundary movement of secondary resources will increasingly require both
3R endeavors (reduce, reuse, recycle) in each country and appropriate control of international material cycles. Recently,
managing electrical and electronic waste (E-waste) has become an important target for domestic and international material
cycles from the viewpoints of environmental preservation and resource utilization efficiency. To understand the current status
of E-waste issues in the context of international material cycles and to discuss the future tasks related to achieving 3R
in the region, we organized the National Institute for Environmental Studies (NIES) E-waste Workshop in December 2004. This
article reviews past studies on E-waste and briefly describes the topics presented and discussions held at the workshop. The
topics at the workshop included E-waste generation, recycling systems, international trade, and environmental impacts. In
addition, we discussed various issues such as terminology, current environmental concerns, and possible solutions. Transboundary
shipments of E-waste should be conducted taking into consideration the concept of sustainable development. The direction of
future research and possible collaborations are also discussed. 相似文献
4.
Shevchenko Pavel V. Murakami Daisuke Matsui Tomoko Myrvoll Tor A. 《Environmental Economics and Policy Studies》2022,24(3):459-476
Environmental Economics and Policy Studies - The classical DICE model is a widely accepted integrated assessment model for the joint modeling of economic and climate systems, where all model state... 相似文献
5.
The release of radioactive materials from the Fukushima nuclear power plant after the Great East Japan Earthquake on 11 March 2011 poses health risks. In this study, the intake of iodine 131 (I-131) in drinking water and foods (milk, dairy products, and vegetables) by citizens of Tokyo was estimated. The effects of countermeasures (restrictions on the distribution of foods and the distribution of bottled water for infants) on reducing intake were also evaluated. The average thyroid equivalent doses without countermeasures from 21 March 2011 were 0.42 mSv in adults, 1.49 mSv in children, and 2.08 mSv in infants. Those with countermeasures were 0.28, 0.97, and 1.14 mSv respectively, reductions of 33%, 35%, and 45%. Drinking water contributed more to intake by adults and children than foods. The intake of I-131 within the first 2 weeks was more than 80% of the estimated intake, owing to its short half-life, indicating that rapid countermeasures are important in reducing intake. The average risks of cancer incidence and mortality due to I-131 for infants were estimated to be 3 × 10−5 and 0.2 × 10−5, respectively, lower than the annual risks of traffic accidents, naturally occurring radioactive material (potassium 40), and environmental pollutants such as diesel exhaust particles. 相似文献
6.
Oguchi M Murakami S Sakanakura H Kida A Kameya T 《Waste management (New York, N.Y.)》2011,31(9-10):2150-2160
End-of-life electrical and electronic equipment (EEE) has recently received attention as a secondary source of metals. This study examined characteristics of end-of-life EEE as secondary metal resources to consider efficient collection and metal recovery systems according to the specific metals and types of EEE. We constructed an analogy between natural resource development and metal recovery from end-of-life EEE and found that metal content and total annual amount of metal contained in each type of end-of-life EEE should be considered in secondary resource development, as well as the collectability of the end-of-life products. We then categorized 21 EEE types into five groups and discussed their potential as secondary metal resources. Refrigerators, washing machines, air conditioners, and CRT TVs were evaluated as the most important sources of common metals, and personal computers, mobile phones, and video games were evaluated as the most important sources of precious metals. Several types of small digital equipment were also identified as important sources of precious metals; however, mid-size information and communication technology (ICT) equipment (e.g., printers and fax machines) and audio/video equipment were shown to be more important as a source of a variety of less common metals. The physical collectability of each type of EEE was roughly characterized by unit size and number of end-of-life products generated annually. Current collection systems in Japan were examined and potentially appropriate collection methods were suggested for equipment types that currently have no specific collection systems in Japan, particularly for video games, notebook computers, and mid-size ICT and audio/video equipment. 相似文献
7.
Estimating the generation of recycled metals from obsolete motorcycles in Vietnam for ELV management
Kurogi Daiki Kosai Shoki Murakami Genya Phong Lai Thai Quang Nguyen Duc Huy Tran Duc Luong Nguyen Yamasue Eiji 《Journal of Material Cycles and Waste Management》2021,23(4):1563-1575
Journal of Material Cycles and Waste Management - The demand for various modes of transportation has significantly increased around the world due to rapid urbanization, the increase in population,... 相似文献
8.
By means of scanning and transmission electron microscopy, the influence of the red tide species Chattonella antiqua was examined with respect to the surface ultrastructures of chloride cells of the yellowtail Seriola quinqueradiata. Conspicuous ultrastructural alterations occurred on the apical surface of these cells. The majority of chloride cells in the control gills showed an apical surface with numerous cellular extensions, while more than half the chloride cells affected by red tide organisms exhibited an apical surface with fewer and smaller extensions, a wrinkled apical surface, or a protruded apical surface. These ultrastructural alterations of chloride cell surface may be due to the partial disturbance of salinity by C. antiqua, and reflect the changes of the ion-transport function in yellowtail gills exposed to red tide water. 相似文献
9.
10.
A novel carbonaceous adsorbent for heavy metal removal was prepared from raw coal by one-step simple sulfur impregnation using
K2S. Raw coal was mixed with K2S powder and then heated at 800°C for 30 min in nitrogen to produce K2S char. The sulfur content
and form in K2S char were determined, and the ability of K2S char to adsorb Zn2+, Cd2+ and Pb2+ was examined. The K2S impregnation
was e ective at impregnating sulfur into coal, especially in the form of elemental, thiophenic and sulfatic sulfur. The sulfur content of
K2S char was higher than those of raw coal and pyrolysis char. The Zn2+ removal in 2.4 mmol/L of Zn2+ solution by K2S char was
higher than raw coal with the removal rate of 100%. K2S char adsorbed Pb2+ and Cd2+ in 24 mmol/L of Pb2+ and Cd2+ solution with
the removal rate of 97% and 35%, respectively. The elution extents of adsorbed Pb2+ and Cd2+ were zero in distilled water and 27%
in 0.1 mol/L HCl solution. These results indicated that an e ective adsorbent for heavy metal ions was prepared from coal using K2S
sulfur impregnation, and that the adsorbed metals were strongly retained in K2S char. 相似文献