Resurrection of the sea pen genus Ptilella Gray, 1870 and description of Ptilella grayi n. sp. from the NE Atlantic (Octocorallia: Pennatulacea) [PDF]
, 2019 The order Pennatulacea covers a group of specialized and morphologically distinct octocorals found in all oceans from intertidal areas to more than 6000 m in depth.
Drewery, Jim +2 more
core +2 more sources
Analysis of spin-up and spring back loads of landing gear based on slip rate
Hangkong gongcheng jinzhanThe landing gear spin-up and spring back loads are the important part of the aircraft landing load. In order to effectively analyze the spin-up and spring back loads of the landing gear in the preliminary design stage，the two-wheel strut landing gear ...
WU Ming +3 more
doaj +1 more source
Prosomal-width-to-weight relationships in American horseshoe crabs (Limulus polyphemus): examining conversion factors used to estimate landings [PDF]
, 2009 Horseshoe crabs (Limulus polyphemus) are valued by many stakeholders, including the commercial fishing industry, biomedical companies, and environmental interest groups.
Botton, Mark L. +4 more
core
Dynamics Simulation Research on Tricycle Landing Gear UAV During Taxiing and Take-off Phase
Hangkong gongcheng jinzhan, 2018 The UAV taxiing and take-off phase is a dangerous phase in the flight process, during which the force of UAV is very complex and the dynamic characteristics is different from that in the air.
Zhang Lin, Gong Xiying, Pang Junfeng
doaj +1 more source
Energies, 2019 Optimal design of transmission gears is important to ensure product durability and reliability. This study measured a multi-purpose cultivator during a rotary ditching operation and analyzed the strength of the power take off (PTO) gear-train for the ...
Yeon-Soo Kim +6 more
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Performance analysis of catch fisheries in Sabang Waters
Depik Jurnal, 2022 Sabang waters is one of the centers of capture fisheries production at the tip of the Sumatera Island which has a large potential of fish resources. However, information related to the performance of capture fisheries including fish production, fishing ...
Salmarika Salmarika +6 more
doaj +1 more source
Day / night variation in fish directivity in the trawl opening [PDF]
, 1994 Still photographs of fish in the mouth area of a bottom trawl were taken by a downwards-oriented automated strobe camera mounted near the headrope. Fish angles relative to the towing direction were measured.
Aglen, Asgeir +4 more
core
A Novel Ground-to-Elevated Mobile Manipulator Base System for High-Altitude Operations
MachinesMobile manipulators have the potential to replace manual labor in various scenarios. However, current mobile base designs have limitations when it comes to accommodating complex movements that involve both high-altitude tasks and ground-based composite ...
Hongjia Wu +6 more
doaj +1 more source
Ground load and float-ability analysis of trolley type landing gear
Hangkong gongcheng jinzhanThe compatibility of aircraft landing gear and pavement is of great significance to the ground motion ability of aircraft. In this paper, the landing gear load and tire load distribution under different working conditions for a large aircraft are ...
YANG Yu +3 more
doaj +1 more source
Jixie chuandong, 2012 The Torsen differential increase torque ratio and automatically adjust torque distribution according to the change of rotation speed difference by direct and inverse two pairs of worm gear and the worm driving with the characteristics of high friction ...
王欢, 孙传琼, 刘雍德, 李善杰
doaj