Results 101 to 110 of about 100,934 (288)

Analysis of selected functional parameters of saw chains

Journal of Forest Science
Results obtained from the research study focused on the functional parameters of five saw chains tested on a test bench equipped with an electrically driven chain saw brought a number of findings.
Pavel Nevrkla, Luboš Staněk, Jindřich Neruda   +2 more
doaj   +1 more source

Numerical simulation of rock breaking by PDC bit in hot dry rocks

Natural Gas Industry B, 2019
Penetrating through hot dry rocks for geothermal resources with high geothermal gradients, high degrees of hardness and abrasivity will be extremely difficult, and a reasonable tooth distribution is a key factor to improve its rock-breaking efficiency ...
Xiaohua Zhu, Zhaowang Dan
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Effects of Wood Species on the Energy Requirements and Size Distribution of Strands Produced by a Strander-Canter

BioResources, 2023
The effects of wood species on the performance of the strander-canting process were studied. Logs of balsam fir (Abies balsamea (L.) Mill.), black spruce (Picea mariana (Mill.) B.S.P.), and jack pine (Pinus banksiana Lamb) were processed under two ...
Irsan Alipraja, Roger E. Hernandez, Ahmed Koubaa   +2 more
doaj   +2 more sources

Energy efficiency identification and surface roughness prediction using cutting force signal for computer numerical controlled machine systems

Scientific Reports
The energy efficiency identification of machining process plays an indispensable part in achieving energy-efficient manufacturing and improving energy utilization as well as productivity and surface quality.
Chunhua Feng, Meng Li, Haohao Guo, Binbin Qiu, Jingyang Zhang   +4 more
doaj   +1 more source

Development of a Laboratory-Integrated Microwave-Assisted Cutting Machine and Its Use in Carbonate Rocks

Applied Sciences
Full-face tunnel boring machines (TBMs) can be used to excavate hard rocks, but there are still significant issues with low advance rate and high cutter wear. However, roadheaders and other mechanical excavators are unable to cut hard rocks.
Masoud Rostami Ghabankandi, Sair Kahraman, Ramazan Comakli, Mustafa Fener, Andrei Andras, Florin Dumitru Popescu   +5 more
doaj   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Trade-off analysis of machinability of steel alloy AISI 304L using Taguchi-grey integrated approach

Journal of Materials Research and Technology
Energy analysis during machine tool operations in manufacturing sector is becoming one of the prominent research avenues due to rising energy costs and environmental impact brought on by high energy consumption.
Faisal Abbas, Muhammad Ali Khan, Muhammad Iftikhar Faraz, Syed Husain Imran Jaffery, Sohail Akram, Jana Petru, Refka Ghodhbani, Walid M. Shewakh   +7 more
doaj   +1 more source

Dose‐dependent hepatotoxicity of hydrogen peroxide in HepG2 cells and its modulation by CYP450 induction

FEBS Open Bio, EarlyView.
NMR metabolomics revealed concentration‐dependent metabolic perturbations in HepG2 cells exposed to H2O2. Rifampicin pretreatment enhanced metabolic competence, attenuated toxin‐induced alterations and produced metabolite profiles more consistent with human liver physiology, supporting the use of CYP450‐induced HepG2 models for improved in vitro ...
Maren Jinks, Garth L. Maker, Emily C. Davies, Berin A. Boughton, Samantha Lodge   +4 more
wiley   +1 more source

Energy saving by prediction of the optimum cutting rate in stone cutting process: An industrial scale study

, 2012
Sawing of rocks cost is controlled to a large extend by the cutting rate which is influenced by the properties of the saw and the sawn rock. Energy consumption is very important unit cost parameter, which strongly depends on cutting rate, in stone ...
Ceylanoglu A., Karakus A., Gul Y.
core   +1 more source