Results 91 to 100 of about 52,137 (241)
Advanced Functional Materials for Marine Energy Utilization
Interdisciplinary Materials, EarlyView.Marine renewable energy is an important future clean energy supply. We construct and sort out the material system for marine energy capture and conversion, transmission, storage, and utilization for the first time. ABSTRACT Several features of marine energy, including large reserves, sustainable utilization, environmental friendliness, make it a ...
Qiang Yu +7 more
wiley +1 more source
Scientific ReportsThe precise position control of the hydraulic support pushing system in the coal mining face is a key technical support for intelligent coal mining. At present, the hydraulic support pushing system uses the electro-hydraulic directional valve as the ...
Tengyan Hou +5 more
doaj +1 more source
Electro-chemical grinding [PDF]
, 1972 Electro-chemical grinding technique has rotation speed control, constant feed rates, and contour control. Hypersonic engine parts of nickel alloys can be almost 100% machined, keeping tool pressure at virtual zero.
Feagans, P. L.
core +1 more source
Near Surface Geophysics, EarlyView.Abstract A better understanding of the near‐surface aquifer system of the Caxambu Water Park, located in the Minas Gerais State, Brazil, has been achieved. The study aimed to identify groundwater reservoirs and flow patterns and contribute to the hydrogeological conceptual model using a multi‐scale geophysical approach.
Emanuele F. La Terra +5 more
wiley +1 more source
Highly Dynamic Soft Electrohydraulic Origami Actuators for Agile and Multimodal Robotic Locomotion
SmartBot, EarlyView.Most current soft robots still lag far behind their natural counterparts in both agility and speed, mainly attributed to the limited morphing modes and performance of soft actuators. Here, the authors report a new methodology of electrohydraulic origami (EHO) for creating powerful and multimodal soft actuators with large strain, high speed, lightweight,
Wenbo Li +6 more
wiley +1 more source
Design and application of automation control system of fully mechanized coal mining face
Gong-kuang zidonghua, 2014 In view of problem of low efficiency of automation coal mining on fully mechanized coal mining face, a design scheme of automation control system of fully mechanized coal mining face was proposed, composition and functions of the system were introduced ...
SUN Bingke, HE Yonghua
doaj +1 more source
Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods
Structural Concrete, EarlyView.Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley +1 more source
Experimental Research Work to Optimize Process Parameters into Electro Chemical Abrasive Flow Machining using Taguchi Methodology [PDF]
, 2017 Electrochemical assisted abrasive flow finishing is a newly developed hybrid finishing process which is used to finish the internal parts of work piece having complicated geometry to large extent.
Kumar, Sunil, Singh, Sandeep
core
Modeling of electro-hydraulic controlled propulsion system
Journal of Dynamics and Vibroacoustics, 2014 Modern rocket propulsion system is a dynamic system with a set of inter- connected links Modern controlled propulsion system, ensuring in the pro- cess of its operation on the aircraft receiving the given basic characteristics. Main propulsion controlled variable serving as controlled object is second mass flow of gases through the nozzle.
A. B. Bachurin +2 more
openaire +1 more source
800 kV Fast Circuit Breaker: Mechanical Coupling Modelling, Buffer Design and Development
High Voltage, EarlyView.ABSTRACT The 800 kV fast circuit breaker (CB) used in ultra‐high voltage (UHV) converter transformer can reduce the total breaking time to 25 ms. It significantly improves the action speed and breaking capacity of the CB, with promising broad application prospects.
Enyuan Dong +6 more
wiley +1 more source