Designing and Operating of Flood Retention 'Dry' Dams in Japan and USA

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Abrasion Damage in Sediment Bypass Tunnels

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchive

Sediment Management Option by Sediment Sluicing in the Mimi River, Japan

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchive

Geomorphic response of rivers below dams by sediment replenishment technique

River morphodynamics and sediment transportSedimentation in reservoir

Recovery of Riverbed Features and Invertebrate Community in Degraded Channels by Sediment Supply through Bypass Tunnel

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchive

Impacts of sediment flushing on channel evolution and morphological processes: Case study of the Kurobe River, Japan

River morphodynamics and sediment transportSedimentation in reservoir

Effects of Lipid Peroxidation-Derived Products on the Growth of Human Colorectal Cancer Cell Line HT-29

Epidemiologic investigations indicate a close relationship between colorectal cancer and fat intake. However, to date the effects of lipid peroxidation-derived products that are formed from fat (especially free or esterified unsaturated fatty acids) on the initiation or progression of colorectal cancer have not been investigated extensively. Therefore, in the present study, we examined the effects of fatty acids, fatty acid hydroperoxides and aldehydes on the growth of human colorectal cancer cell line HT-29. At concentrations of 1 and 10 µM, linoleic, arachidonic and eicosapentaenoic acids, and 13-hydroperoxyoctadecadienoic and 15-hydroperoxyeicosapentaenoic acids had no significant effects on the growth of HT-29 cells. 4-Hydroxynonenal and 4-hydroxyhexenal had no significant effects on the growth of HT-29 cells up to 10 µM, whereas 4-oxononenal potently inhibited HT-29 cell growth (1–10 µM, 16–85% inhibition). Further experiments concerning DNA fragmentation, expression levels of Bax and Bcl-2 mRNA, expression levels of pro-caspase-3 and caspase-3 proteins, and activity of caspase-3 suggested that 4-oxononenal may increase the sensitivity of HT-29 cells to apoptosis through a decreased expression level of Bcl-2 and then increased formation of caspase-3 from pro-caspase-3

A STUDY ON THERMAL ENVIRONMENT IN RIVER REACH WITH A SERIES OF SABO DAMS

In previous researches (e.g.: Nakano et al, 1996), it is estimated that habitat for cold water fish will be decreasing in Hokkaido area, Japan, if water temperature go up several degrees by global warming. In summer, habitat for Siretoko Peninsula (20 degree is limit temperature) comes severer in daytime by radiation in Siretoko Peninsula, and Sabo dam series is suspected as a factor further heating. In this study, under an assumption that dam makes wide, shallow, and slow flow area and they make further heating effects by radiation/sensitive heat flux, field investigations on micro meteorology, temporal/spatial water temperature change and flow field are done in two domains with/without dam series in the Kanayama River. Furthermore small experiment also done to know heal flux magnitude of dam fall’s heating effect Result shows that: (1) radiation’s effect is larger in dam series domain than another. (2) This effects are estimated by flow field with wide water surface and slow velocity made by river bed shape with flat dam. (3) At dam falls, heating effect is negligible or cooling effect is larger by latent heat. By further research, explanation of heating effects by falls taking warm air at pools is expected