Results 111 to 120 of about 56,466 (281)

Effective pretreatment of wet microalgal biomass to enhance lipid extraction in biodiesel production

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biodiesel is a viable alternative to fossil fuels. Identifying and evaluating nonedible sources is essential to address ecological concerns and meet energy demands. Microalgae are effective for lipid production but their rigid cell walls hinder bioproduct release making the process energy‐intensive and costly.
Amarnath Krishnamoorthy   +2 more
wiley   +1 more source

Force stimulation promotes nerve regeneration by restoring cellular energy

open access: yesBMEMat, EarlyView.
Mechanical stimulation can help nerves regenerate in various ways. We developed two devices (a piezo‐motor‐driven stretching device and a SAW‐based actuator) to apply mechanical stimulation to sciatic nerve and DRG neurons. Our study shows that appropriate mechanical force stimulation can promote regeneration by restoring the energy supply to the ...
Zhe Wang   +10 more
wiley   +1 more source

Performance of Axial-Flow Supersonic Compressor of the XJ55-FF-1 Turbojet Engine. IV - Analysis of Compressor Operation over a Range of Equivalent Tip Speeds from 801 to 1614 Feet Per Second [PDF]

open access: yes, 1949
An investigation was conducted to determine the performance characteristics of the axial-flow supersonic compressor of the XJ55-FF-1 turbojet engine.
Graham, Robert C., Hartmann, Melvin J.
core   +1 more source

Control of a Quadrotor with Reinforcement Learning

open access: yes, 2017
In this paper, we present a method to control a quadrotor with a neural network trained using reinforcement learning techniques. With reinforcement learning, a common network can be trained to directly map state to actuator command making any predefined ...
Hutter, Marco   +3 more
core   +1 more source

Advances in Triboelectric Nanogenerators With Rotating Structure

open access: yesCarbon Energy, EarlyView.
The rotating TENG has been widely studied for its superiorities of simple structure, high efficiency, and stable output. This review introduced the four different principles of rotating TENG and offered a thorough summary for performance and application research through three‐level classification. Importantly, the current existing problems, challenges,
Chuguo Zhang   +4 more
wiley   +1 more source

Electromechanical Battery EMB Mass Minimization taking into Account its Electrical Machines Rotor Energy

open access: yesElectrical, Control and Communication Engineering, 2014
In this paper the electromechanical battery (EMB) with synchronous machine is described. Theoretically, if electrical machines rotor stored energy is known, it is possible to reduce the flywheel mass of electromechanical battery.
Podgornovs Andrejs, Sipovichs Antons
doaj   +1 more source

NASA Low-Speed Centrifugal Compressor for Fundamental Research [PDF]

open access: yes
A centrifugal compressor facility being built by the NASA Lewis Research Center is described; its purpose is to obtain benchmark experimental data for internal flow code verification and modeling.
Adam, P. W., Buggele, A. E., Wood, J. R.
core   +1 more source

Expression, Purification, and Microscopy‐Based Assays for Engineered Recombinant Tyrosinated, Detyrosinated, and Δ2 Human Tubulin

open access: yesCytoskeleton, EarlyView.
ABSTRACT Microtubules are noncovalent polymers assembled from α/β tubulin dimers. Their structure, dynamics and interaction with effectors are regulated through the expression of diverse tubulin isotypes and chemically diverse posttranslational modifications, also known as the “tubulin code.” Understanding the biophysical correlates between tubulin ...
Jiayi Chen   +2 more
wiley   +1 more source

Cold-air performance of the compressor-drive turbine of the Department of Energy baseline automobile gas-turbine engine [PDF]

open access: yes
The aerodynamic performance of the compressor-drive turbine of the DOE baseline gas-turbine engine was determined over a range of pressure ratios and speeds. In addition, static pressures were measured in the diffusing transition duct located immediately
Mclallin, K. L., Roelke, R. J.
core   +1 more source

Experimental comparison between a counter-rotating axial-flow fan and a conventional rotor-stator stage [PDF]

open access: yes, 2013
Based on the requirement of energy consumption level and weight and dimension restriction, compact axial machines are highly demanded in many industrial fields.
BAKIR, Farid   +2 more
core   +3 more sources

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