Results 41 to 50 of about 476,160 (349)
Fisheries statistical bulletin, Kainji Lake, Nigeria, 1998 [PDF]
, 1999 A tabulated summary is presented of the main fisheries data collected to date (1998) by the Nigerian-German Kainji Lake Fisheries Promotion Project, together with a current overview of the fishery.
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Effects of harvesting methods on sustainability of a bay scallop fishery: dredging uproots seagrass and displaces recruits [PDF]
, 2005 Fishing is widely recognized to have profound effects on estuarine and marine ecosystems (Hammer and Jansson, 1993; Dayton et al., 1995). Intense commercial and recreational harvest of valuable species can result in population collapses of target and ...
Bishop, Melanie J. +3 more
core +3 more sources
Development of Heat Engines Powered by Twisted and Coiled Polymer Fiber Actuators
Advanced Materials Technologies, EarlyView.Continuously rotating engines driven by thermally responsive actuating materials can turn waste heat into useful energy. For the first time heat engines operated by twisted and coiled polymer fiber actuators are demonstrated with engine design guided by two simple analytical models.
Geoffrey M. Spinks +2 more
wiley +1 more source
Construction and Operation of a Two-place Diver's Sled [PDF]
, 1991 Fisheries gear researchers have employed scuba diver-operated sleds to evaluate towed fishing systems since the early 1950's. One of the earliest sled designs was a converted Stokes litter in which two divers sat tandem with the forward diver operating ...
Watson, John W., Workman, Ian K.
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Fishing Zone in Karimunjawa National Park [PDF]
, 2016 Karimunjawa National Park (KNP) consists of 7 zones i.e., core, protection, tourism, residence, rehabilitation, cultivation, and traditional fisheries utilization zone.
Irnawati, R. (Ririn) +4 more
core +3 more sources
Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion
Advanced Robotics Research, EarlyView.This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley +1 more source
Biosfer, 2018 Fishermen plays an important role in the fisheries sector specifically for fishing gear. fishermen knowledge about environmentally friendly fishing gear expected to preserve the ecosystem and fish habitat.
Evy KurniawatI +2 more
doaj +1 more source
Applied Sciences, 2020 Marine resources are valuable assets to be protected from illegal, unreported, and unregulated (IUU) fishing and overfishing. IUU and overfishing detections require the identification of fishing gears for the fishing ships in operation.
Kwang-il Kim, Keon Myung Lee
doaj +1 more source
Applied Sciences, 2022 The bluefin sea robin (Chelidonichthys spinosus), hereafter BSR, is one of the most important fish species in the South Sea of Korea. The production value of BSR in 2020 was USD 4,733,057.
Pyungkwan Kim +2 more
doaj +1 more source
Fisheries statistical bulletin, Kainji Lake, Nigeria, 1999 [PDF]
, 2000 A tabulated summary is presented of the main Lake Kainji fisheries data collected to date (1999) by the Nigerian-German Kainji Lake Fisheries Promotion Project, together with a current overview of the fishery.
core