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71.
Megumi Matsumoto Jun Yoshinaga 《Environmental science and pollution research international》2010,17(3):643-649
Introduction
Isotope ratios of lead (207Pb/206Pb and 208Pb/206Pb) in Japanese women’s hair of the twentieth century were measured to evaluate lead contamination of human proximate environment of those days. 相似文献72.
Kumar Harendra Kumagai Shogo Kameda Tomohito Saito Yuko Yoshioka Toshiaki 《Journal of Material Cycles and Waste Management》2021,23(2):461-469
Journal of Material Cycles and Waste Management - In this study, we developed a one-pot wet ball-milling method for the recovery of highly pure copper wire, poly(vinyl chloride) (PVC) coating, and... 相似文献
73.
Journal of Material Cycles and Waste Management - To recycle incineration bottom ash as a raw material in cement production, it is important to reduce the chlorides in the ash. Due to... 相似文献
74.
A fine porcelain open-cell photo-catalytic filter with titanium dioxide (TiO(2)) was evaluated for sterilization and sanitation of bio-polluted industrial water. In simulated seawater industrial effluent samples, the populations of Escherichia coli and Vibrio parahaemolyticus quickly decreased and reached non-detectable level within 10min. In seawater effluents from a seaweed processing plant, the bacterial populations in two samples quickly decreased by more than 10(3). In another two samples the decreases were slow and lowered by less than 10(2). Using fluorescence microscopy, it was indicated that the bacterial cells treated with photo-catalytic TiO(2) were damaged. In addition, the protein concentration in simulated seawater effluent slowly decreased using the photo-catalytic TiO(2) reaction; and reached similar concentrations as seawater near cultured seaweed beds. These results indicate that using a reactor with a TiO(2) photo-catalyst filter was effective for the sanitation of seawater effluents. 相似文献
75.
Six 3D models of the digestive system during ontogeny were reconstructed from histological sections of Atlantic cod larvae.
The 3D models clearly visualize the following features: folding of the gut rotation; subdivision of digestive tract into foregut,
midgut, and hindgut by sphincters; development of stomach and pyloric caeca from 39 dph; location of entrances of bile and
pancreatic ducts in the medial plane of the anterior midgut; ontogeny of pancreas from a compact organ to an elongated and
branched (but not diffuse) organ along the posterior midgut; one dominant islet of Langerhans until 39 dph and several smaller
satellite islets also visible from 53 dph; the relatively large volume of the anterior midgut that probably increases residence
time of ingested food mixing with secretions from pancreas and bile. Calculated volumes of each digestive organ demonstrate
allometric changes during ontogeny. Interactive 3D models are available as QuickTime format downloadable files. 相似文献
76.
Takeshi?TakegakiEmail author Takashi?Kaneko Yukio?Matsumoto 《Die Naturwissenschaften》2012,99(4):285-289
Sneaking tactic, a male alternative reproductive tactic involving sperm competition, is generally adopted by small individuals
because of its inconspicuousness. However, large size has an advantage when competition occurs between sneakers for fertilization
of eggs. Here, we suggest that both large- and small-size advantages of sneaker males are present within the same species.
Large sneaker males of the dusky frillgoby Bathygobius fuscus showed a high success rate in intruding into spawning nests because of their advantage in competition among sneaker males
in keeping a suitable position to sneak, whereas small sneakers had few chances to sneak. However, small sneaker males were
able to stay in the nests longer than large sneaker males when they succeeded in sneak intrusion. This suggests the possibility
of an increase in their paternity. The findings of these size-specific behavioural advantages may be important in considering
the evolution of size-related reproductive traits. 相似文献
77.
Mitsutaka Matsumoto 《Journal of Cleaner Production》2010,18(13):1284-1299
To discuss measures to promote reuse in society, a holistic understanding of reuse businesses and markets is indispensable. This paper presents a simulation model for reuse businesses. To formulate the model, first, prerequisites for reuse businesses are outlined. The simulation model includes these prerequisites as its parameters, and its outcomes yield patterns of reuse markets. The paper presents the formulation of the model and simulation outcomes under four parameter settings. The correspondences between the simulation outcomes and case studies of reuse businesses in Japan are discussed to verify the propriety of the model. 相似文献
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Fe(3+)-H(2)O(2) mixed reagent, but not Fe(2+)-H(2)O(2), was found to be capable of degrading 2,7-dichlorodibenzo-p-dioxin (DCDD). A reaction mixture of FeCl(3) (8 mM) and H(2)O(2) (1%) caused approximately 50% degradation within 6 h and >90% degradation within 24 h at 27 degrees C. Increasing the temperature remarkably stimulated degradation: at 70 degrees C, approximately 100% degradation was achieved within 15 min. When DCDD-treated model soil (5 micrograms/g) was conducted, approximately 100% of the DCDD was degraded within 30 min at 70 degrees C (both reagents were added every 10 min). These results suggest that Fe(3+)-H(2)O(2) mixed reagent may be a new tool for combating persistent environmental pollutants such as dioxins and polychlorinated biphenyls. 相似文献