Results 141 to 150 of about 45,044 (300)
Remote semi-continuous flow rate logging seepage meter [PDF]
The movement of groundwater and its associated solutes from upland regions was implicated in the degradation of receiving surface water bodies. Current efforts to directly measure this influx of water incorporate manually operated seepage meters which ...
Reay, William G., Walthall, Harry G.
core +1 more source
Land Degradation &Development, EarlyView.ABSTRACT Forest ecosystem services (ESs) are garnering increasing public attention as awareness grows regarding society's fundamental dependence on them for well‐being. Forest fires, one of the major disturbances of ESs, are becoming more frequent and destructive, exacerbated in part by climate change.
Emanuele Spada +6 more
wiley +1 more source
Performance of large-bore tapered-roller bearings under combined radial and thrust load at shaft speeds to 15,000 rpm [PDF]
The performance of 120.65-mm bore tapered roller bearings was investigated at shaft speeds up to 15,000 rpm. Temperature distribution and bearing heat generation were determined as a function of shaft speed, radial and thrust loads, lubricant flow rate ...
Parker, R. J., Signer, H. R.
core +1 more source
Predefined‐Time Dynamic Surface Control of Tank Horizontal Stabilization System With Disturbance
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Modern new tanks are difficult to achieve high precision control of the horizontal stabilization system due to electromechanical coupling and road surface disturbance during high‐speed combat. A predefined‐time dynamic surface controller (DSCPT) is proposed for the fast stabilization and strong disturbance problems of the tank horizontal ...
Zhicheng Fan +5 more
wiley +1 more source
Polymer International, EarlyView.An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley +1 more source
FLOW CHARACTERISTICS FORMATION OF POWER STEERING WITH ROTARY DISTRIBUTOR
Наука и техника, 2012 In order to obtain an adequate mathematical model of vehicle hydro-mechanical steering which is equipped with a steering mechanism combined with power steering and a rotary distributor it is initially necessary to get current consumption values in ...
V. V. Mikhailov, E. Ya. Strock
doaj
Mechanization of and experience with a triplex fly-by-wire backup control system [PDF]
A redundant three axis analog control system was designed and developed to back up a digital fly by wire control system for an F-8C airplane. The mechanization and operational experience with the backup control system, the problems involved in ...
Lock, W. P. +2 more
core +1 more source
Thin Fluoride Insulators for Improved 2D Transistors: From Deposition Methods to Recent Applications
physica status solidi (RRL) – Rapid Research Letters, EarlyView.2D materials hold significant promise for next‐generation electronic and optoelectronic devices, but suitable gate dielectrics are still a challenge. Fluoride insulators, offering inert, dangling‐bond‐free surfaces, have recently emerged as strong candidates. This review covers recent publications on high‐quality fluoride thin‐film deposition and their
Behzad Dadashnia +3 more
wiley +1 more source
An ultrasonic flowmeter for measuring dynamic liquid flow [PDF]
A novel oscillating pipe system was developed to provide dynamic calibration wherein small sinusoidal signals with amplitudes of 0.5 to 10% of the steady-state flow were added to the steady-state flow by oscillating the flowmeter relative to the fixed ...
Carpini, T. D., Monteith, J. H.
core +1 more source
CONCERT: A Modular Reconfigurable Robot for Construction
Journal of Field Robotics, EarlyView.ABSTRACT This paper presents CONCERT, a fully reconfigurable modular collaborative robot (cobot) for multiple on‐site operations in a construction site. CONCERT has been designed to support human activities in construction sites by leveraging two main characteristics: high‐power density motors and modularity. In this way, the robot is able to perform a
Luca Rossini +18 more
wiley +1 more source