Results 111 to 120 of about 99,009 (221)
Geochemical analysis of Cenozoic fossil conifers at high latitudes: Implications for molecular preservation and environmental change [PDF]
, 2010 Fossil materials record ancient life and their adapted environment. Arctic plant fossils are critical for our understanding of the Earth’s paleoenvironment when high latitudes were under ice-free conditions.
Witkowski, Caitlyn
core +1 more source
A LTA flight research vehicle [PDF]
, 1975 An Airship Flight Research Program is proposed. Major program objectives are summarized and a Modernized Navy ZPG3W Airship recommended as the flight test vehicle. The origin of the current interest in modern airship vehicles is briefly discussed and the
Nebiker, F. R.
core +1 more source
Evaluation of the Wadden Sea Particularly sensitive Sea Area. On behalf of the Common Wadden Sea Secretariat. [PDF]
, 2010 The purpose of this document is to present the high level outcomes for the evaluation of the effectiveness of the Wadden Sea PSSA, seven years after its designation by the IMO.
Butt, Nickie +4 more
core +1 more source
Wind velocity probing device and method Patent [PDF]
, 1970 Free-fall body for obtaining wind velocity profiles by radar ...
Stengel, R. F.
core +1 more source
Electric arc apparatus Patent [PDF]
, 1968 Electric arc heater with supersonic nozzle and fixed arc length for use in high temperature wind ...
Shepard, C. E. +2 more
core +1 more source
Frontiers in Marine ScienceMarine plastic pollution poses a significant and escalating threat to ocean ecosystems, with microbial colonization on plastics playing a critical role in determining their environmental fate.
Gregory M. Joern +4 more
doaj +1 more source
Ecosystem Shock: The Devastating Impacts of Invasive Species on the Great Lakes Food Web [PDF]
, 2004 Gives an account of the changes to the Great Lakes ecosystem brought about by non-native aquatic species. Assesses the current and future impacts on fish communities and commercial fisheries.
Gwen White +2 more
core
LCA analysis of a roof mounted PV system: a Romanian case study
Frontiers in Environmental ScienceUsing solar photovoltaic power sources has become a discussed topic in the construction and energy industry. The pressing need to reduce reliance on fossil fuels, increasing costs of traditional electricity generation, and affording photovoltaic modules ...
Tania Rus +2 more
doaj +1 more source
Economic Incentives for Controlling Trade-Related Biological Invasions in the Great Lakes [PDF]
Ballast water from commercial ships engaged in international trade has been implicated as the primary invasion pathway in over 60 percent of new introductions of invasive alien species (IAS) in the Great Lakes since 1960.
Horan, Richard D., Lupi, Frank
core +1 more source
Impact of wheel shape on the vertical damage of cast crossing panels in turnouts [PDF]
, 2015 Impact forces generated in the load transfer area of railway crossing panels lead to a range of degradation modes from wear and fatigue of the contacting materials, fatigue of supporting components to ballast/subgrade deterioration.
Bezin, Yann +3 more
core