Results 41 to 50 of about 1,110,256 (312)

Fuel Injection Optimization for Large-Bore Two-Stroke Natural-Gas Engines

Energies
Recent methane emissions regulations present a challenge for the large-bore, natural-gas-fueled engines used at over 1700 compression stations across the US.
Titilope Ibukun Banji, Gregg Arney, Daniel B. Olsen   +2 more
doaj   +1 more source

Injection and Combustion Analysis of Pure Rapeseed Oil Methyl Ester (RME) in a Pump-Line-Nozzle Fuel Injection System

Energies, 2021
This work suggests an interpretation to the quantitatively higher formation of NOx in a compression ignition (CI) engine when fueled with pure biodiesel (B100). A comparative study about the use of rapeseed oil methyl ester (RME) and diesel fuel mixtures
Flavio Caresana, Marco Bietresato, Massimiliano Renzi   +2 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Numerical study of heat injection CO2 to increase CH4 production based on gas-water two-phase flow

Meitan kexue jishu
The technology of CO2-enhanced coalbed methane (CO2-ECBM) can reduce greenhouse gas emissions, and has the function of clean energy production and environmental protection.
Linfeng ZHANG, Yanguo YANG, Yongliang MU, Nan FAN, Kang LIU, Wenjun YAO   +5 more
doaj   +1 more source

A Review of Early Injection Strategy in Premixed Combustion Engines

Applied Sciences, 2019
Due to the increasing awareness of environmental protection, limitations on exhaust emissions of diesel engines have become increasingly stringent. This challenges diesel engine manufacturers to find a new balance between engine performance and emissions.
Xingyu Liang, Zhiwei Zheng, Hongsheng Zhang, Yuesen Wang, Hanzhengnan Yu   +4 more
doaj   +1 more source

Injection Flow Rate Threshold Preventing Atypical In-Cavity Pressure during Low-Pressure Powder Injection Molding

Powders, 2023
Controlling injection parameters is paramount when it comes to producing high-quality green parts using powder injection molding. This work combines experimental and numerical approaches to study the impact of injection parameters on mold in-cavity ...
Francis Arès, Dorian Delbergue, Vincent Demers   +2 more
doaj   +1 more source

Impact of dye injection on intracoronary pressure [PDF]

EuroIntervention, 2009
Coronary angiography is widely used to estimate coronary blood flow velocity, as in the TIMI frame count method. However, it is unknown to what extent the injection of dye elevates intracoronary pressure which may accelerate coronary blood flow velocity.
Stoel, Martin, Kandhai-Ragunath, Jasveen, van Houwelingen, Gert, von Birgelen, Clemens   +3 more
openaire   +3 more sources

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon, Peter T. Gallagher, Orly I. Richter, Neermala Poudel Neupane, Amy C. Mandigo, Jennifer J. McCann, Emanuela Dylgjeri, Irina Vasilevskaya, Christopher McNair, Channing J. Paller, Wm. Kevin Kelly, Karen E. Knudsen, Matthew J. Schiewer, Ayesha A. Shafi   +13 more
wiley   +1 more source

Experimental Study on Variable-frequency Screw Compressor with Economizer under Variable Working Conditions

Zhileng xuebao, 2018
To improve the efficiency of a variable-frequency screw compressor with an economizer, the effect of parameters such as the discharge pressure of the compressor, motor frequency, injection pressure of the economizer, and volumetric efficiency on the ...
Qin Huanghui
doaj