Results 31 to 40 of about 251,598 (308)

Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 8, April to June, 1981 [PDF]

open access: yes, 1988
Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June 1981, is presented in a data report format.
Karpov, Konstantin A.   +1 more
core  

Simulation and Analysis of the Elliptical Gear Used in Rack Type Pumping Unit

open access: yesJixie chuandong, 2016
According to the geometric characteristics of the elliptical gear,with different eccentricity ratio of ellipse,the different transmission ratio curve is got,and then the variable speed motion of pumping unit is completed.
Tian Zhenzhen, Peng Yong, Zhang Haokun
doaj  

Vibration metrics for informational support in assessing the technical condition of ball mills

open access: yesГорные науки и технологии
The technical condition of ball mills, employed in the fine grinding of minerals, ores, coal, cement clinker, and other materials, is dictated by both the operational load and the actual physical state of the equipment.
Vladimir F. Borisenko   +3 more
doaj   +1 more source

Roll‐to‐Roll Manufacturing of Flexible Thermoelectric Semiconductors Using Low‐Level Direct‐Current Sputtering

open access: yesAdvanced Materials Technologies, EarlyView.
Roll‐to‐roll direct‐current sputtering enables room‐temperature manufacture of flexible bismuth telluride thermoelectric films. By identifying a low‐power deposition window that suppresses charge‐induced arcing, this work links sputtering conditions to film structure, charge transport, and thermoelectric performance, achieving a room‐temperature figure
Xudong Tao   +5 more
wiley   +1 more source

Marine recreational fisheries statistics survey for northern and central California, quarterly report no. 13, July to September, 1982 [PDF]

open access: yes, 1988
Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in July to September 1982, is presented in a data report format.
Karpov, Konstantin A.   +1 more
core  

Fault diagnosis of shearer rocker gear based on deep residual network

open access: yesGong-kuang zidonghua, 2021
The traditional shearer rocker gear fault diagnosis methods cannot extract features autonomously, resulting in poor gear fault diagnosis accuracy and efficiency.
LI Changwen   +3 more
doaj   +1 more source

Vision‐Assisted Avocado Harvesting with Aerial Bimanual Manipulation

open access: yesAdvanced Robotics Research, EarlyView.
This work outlines the design and implementation of a bimanual aerial robot that employs visual perception and learning to detect, reach, and harvest avocados. A new gripper and fixer arm assembly is used to harvest avocados, while visual perception enables the detection of avocados and estimation of their position and orientation for determining ...
Zhichao Liu   +3 more
wiley   +1 more source

Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 11, January to March 1982 [PDF]

open access: yes, 1988
Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in January to March 1982, is presented in a data report format.
Karpov, Konstantin A.   +1 more
core   +2 more sources

Numerical simulation of a magnetic induction coil for heat treatment of an AISI 4340 gear

open access: yesEuropean Mechanical Science, 2022
In manufacturing industry, heat treatment is a fundamental requirement for improving the material quality of readily manufactured products. Induction heating technology is repeatable and easily controlled by the advantage of having an electronical ...
Önder Sönmez   +3 more
doaj   +1 more source

Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials

open access: yesAdvanced Robotics Research, EarlyView.
Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira   +5 more
wiley   +1 more source

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