Abstract Looking into the future, (massive) hydraulic structures face a not inconsiderable number of challenges that need to be overcome.

The western pond turtle Emys (formerly Clemmys) marmorata is declining throughout its range, primarily due to loss of habitat via urbanization and conversion to agriculture. Urban waterways present several important challenges to freshwater turtle populations, but they also present an opportunity to maintain declining species in a ubiquitous habitat that has high public visibility. The arboretu...

We address the problem of minimizing aggregated fuel consumption by vessels in an inland waterway, e.g., a river, with single lock. The vessel depends on its velocity and slower it moves, less consumes. Given entry times into waterway deadlines before which they need to leave we start from optimal velocities that minimize their private consumption, where assume selfish behavior skippers. Presen...

The main regularities of the development commercial seaports in 1956-1972, during period extensive growth USSR economy, are determined. This is characterized by a high average annual rate port cargo turnover, level which will not be reached before collapse USSR. A comparison made between turnover Soviet ports and US ports. quantitative assessment influence course leadership on extraction export...

Moore swabs (sewer swabs) have been used successfully to culture pathogenic organisms from wastewater. Sensitivity seems to depend on the size of the waterway sampled as well as the number of organisms present. In Santiago, Chile, we placed 24 swabs into the sewers draining the homes of 10 known chronic carriers of typhoid. Swabs were positive for Salmonella typhi in 5 of the 10 households (50%...

A century after the opening of the Panama Canal, a second inter-oceanic passage is set to be built in Central America, this time in Nicaragua. The ambitious and astronomically expensive project promises to bring economic opportunity to a poor country but it also carries risks to its tropical ecosystems. Will the new waterway ultimately link two oceans or divide a continent? Michael Gross invest...

Abstract The use of maritime autonomous vessels for the inland waterway (IWW) transport can revolutionise current logistics supply chain and enable shifting cargo transportation from less efficient road rail modes. However, lack guidelines requirements operation testing must be addressed to operations. This study aims identify gaps prevailing regulatory, liability insurance frameworks propose v...