Results 31 to 40 of about 56,700 (310)

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

Differential Effects of Nitrogen and Phosphorus Fertilization Rates and Fertilizer Placement Methods on P Accumulations in Maize

Plants
Crop production in Afghanistan suffers from limited phosphorus (P) availability, which severely hinders national agriculture sustainability. This study hypothesized that deep fertilizer placement could significantly enhance the uptake of immobile P and ...
Sharifullah Sharifi, Songmei Shi, Hikmatullah Obaid, Xingshui Dong, Xinhua He   +4 more
doaj   +1 more source

Algebraic multigrid methods (AMG) for the efficient solution of fully implicit formulations in reservoir simulation

, 2022
S.59-69A primary challenge for a new generation of reservoir simulators is the accurate description of multiphase flow in highly heterogeneous media and very complex geometries.
Lou, B., Wheeler, M.F., Klie, H., Stüben, K., Clees, Tanja   +4 more
core  

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

APPLICATION OF ARTIFICIAL INTELLIGENCE IN RESERVOIR SIMULATION FOR CHARACTERIZING MULTI-PHASE FLUID FLOW THROUGH PETROLEUM RESERVOIRS

Rudarsko-geološko-naftni Zbornik
Artificial intelligence (AI) has rapidly advanced and influenced all scientific fields, including the petroleum industry, where it is no longer a novel concept.
Viswakanth Kandala, Suresh Kumar Govindarajan, Tummuri Naga Venkata Pavan, Swaminathan Ponmani, Srinivasa Reddy Devarapu   +4 more
doaj   +1 more source

A method of production profile quick prediction based on typical curves: A case study of the Upper Shale large multi-layered sandstone reservoir, Rumaila Oilfield, Iraq

Petroleum Exploration and Development, 2016
Combined the advantage of reservoir simulation and conventional reservoir engineering methods, the paper proposes a quick method for production performance prediction, which is based on type curves generated from reservoir simulations of sector model ...
Yong LI, Baozhu LI, Changbing TIAN, Yixiang ZHU, Benbiao SONG, Qihao QIAN   +5 more
doaj   +1 more source

Numerical Simulation Study of Huff-n-Puff Hydrocarbon Gas Injection Parameters for Enhanced Shale Oil Recovery

Energies, 2023
Gas injection has already proven to be an efficient shale oil recovery method successfully tested all around the world. However, gas-enhanced oil recovery methods have never been implemented or tested for the greatest Siberian shale oil formation yet ...
Alsu Garipova, Elena Mukhina, Alexander Cheremisin, Margarita Spivakova, Anton Kasyanenko, Alexey Cheremisin   +5 more
doaj   +1 more source

Deflation AMG solvers for highly Ill-conditioned reservoir simulation problems

, 2022
S.43-51In recent years, deflation methods have received increasingly particular attention as a means to improving the convergence of linear iterative solvers.
Wheeler, M.F., Klie, H., Clees, Tanja, Stüben, K.   +3 more
core  

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

A Systemic Comparison of Physical Models for Simulating Surfactant–Polymer Flooding

Energies, 2023
Three different reservoir simulators that utilize both two-phase and three-phase microemulsion phase behavior models are used to model surfactant–polymer flooding to determine and compare their results.
Muhammad M. Alhotan, Bruno R. Batista Fernandes, Mojdeh Delshad, Kamy Sepehrnoori   +3 more
doaj   +1 more source