Results 71 to 80 of about 166,367,160 (262)

Factors Affecting the Rate of Penetration of Large-Scale Electricity Technologies: The Case of Carbon Sequestration [PDF]

, 2007
This project falls under the Technology Innovation and Diffusion topic of the Integrated Assessment of Climate Change Research Program. The objective was to better understand the critical variables that affect the rate of penetration of large-scale ...
Herzog, Howard J., McFarland, James R.
core   +1 more source

Penetration Rate Prediction Models for Core Drilling

, 2021
Boreholes are used for many purposes in mining operations, petroleum engineering, and construction works. Numerous factors affect the performance of drilling equipment. Researchers continue to work on the variable drilling parameters that can be adjusted
Karakaya, Emre, Bilim, Niyazi
core   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Penetration and cratering experiments of graphite by 0.5-mm diameter steel spheres at various impact velocities [PDF]

, 2014
Cratering experiments have been conducted with 0.5-mm diameter AISI 52100 steel spherical projectiles and 30-mm diameter, 15-mm long graphite targets.
SEISSON, G, BOUSTIE, Michel, GUILLET, F, Hallo, L., BERTHE, Laurent, Seisson, Gabriel, Boustie, M., Guillet, F., BOUSTIE, M, HALLO, L, Herbert, D., HEBERT, D, CHEVALIER, J.M   +12 more
core   +1 more source

Structural Design and Test of ROP Improving Tool with Adjustable Impact Frequency

Shiyou jixie
Rocks below the Permian are less drillable, leading to low rate of penetration(ROP), which can hardly be improved by only applying the drilling tool with single impact frequency.In this study, a ROP improving tool with adjustable impact frequency was ...
Tian Yu, Zhang Xin, Zhang Pengxiang, Sun Yaoning, Xu Chenxing, Song Xiyan   +5 more
doaj  

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

Effects of PEV Penetration on Voltage Unbalance

, 2014
Balancing loads in low voltage networks is a challenging task due to a continuous fluctuation in the power demand. Voltage unbalance is a condition in which the voltage phasors differ in amplitude and/or do not have its normal 120° phase relationship ...
Ahmed M. A. Haidar, Kashem M. Muttaqi, Muttaqi, Kashem M., Haidar, Ahmed M. A.   +3 more
core   +1 more source

Rate of Penetration Estimation with Parameter Correction

Applied Sciences
Accurate estimation of the Rate of Penetration (ROP) is essential for optimizing drilling operations, particularly in deep wells where traditional methods based on nominal depth measurements often fall short.
Dan Sui, Bernt Sigve Aadnøy
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source