Results 51 to 60 of about 3,986,628 (294)

Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation

, 2012
Isocurvature perturbations naturally occur in models of inflation consisting of more than one scalar field. In this paper we calculate the spectrum of isocurvature perturbations generated at the end of inflation for three different inflationary models ...
Adam J. Christopherson, Ian Huston, M. Abramowitz   +2 more
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Two-Dimensional Physical Simulation of the Seepage Law of Microbial Flooding

Energies
The study of seepage laws during microbial enhanced oil recovery helps to elucidate the mechanisms behind microbial flooding, and the use of large-scale physical simulation experimental devices can more objectively and accurately investigate the seepage ...
Yongheng Zhao, Jianlong Xiu, Lixin Huang, Lina Yi, Yuandong Ma   +4 more
doaj   +1 more source

Pressure Evolution of a Field Induced Fermi Surface Reconstruction and of the Neel Critical Field in CeIn3

, 2009
We report high-pressure skin depth measurements on the heavy fermion material CeIn3 in magnetic fields up to 64 T using a self-resonant tank circuit based on a tunnel diode oscillator.
C. H. Mielke, C. Petrovic, D. Graf, D. Shoenberg, E. C. Palm, I. M. Lifshitz, J. Bourg, J. Cooley, K. M. Purcell, M. Kano, M. M. Altarawneh, P. Schlottmann, R. McDonald, Rongwei Hu, S. W. Tozer, T. Ebihara, T. Murphy   +16 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Structure Design and Flow Field Analysis of Plugging and Diversion Robot in Pipeline

Shiyou jixie, 2021
In order to quickly solve the problem of pipeline leakage and plug the pipeline without stopping pipeline transportation, a design of a wheeled robot that can quickly plug and divert was proposed, and the flow field of the fluid domain in the robot's ...
Han Chuanjun, Fei Yili, Zhang Qinqin, Cai Wenbo   +3 more
doaj  

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

A wellbore fluid performance parameters–temperature–pressure coupling prediction model during the managed pressure cementing injection stage

Energy Science & Engineering
Managed pressure cementing (MPC) is a new technology based on managed pressure drilling, which has a greater advantage in facing narrow density window formations.
Jinlu Liu, Jun Li, Hongwei Yang, Hui Li, Gonghui Liu   +4 more
doaj   +1 more source

Safety distance for pressure‐resistance tests of cylindrical pressure vessels in the industrial field

Energy Science & Engineering, 2022
The number of pressure vessel bursts (PVBs) has reduced since the 1990s due to the introduction of many rules and regulations. However, accidents frequently occur during pressure resistance tests (pneumatics) and there are scant safety guidelines for ...
Seolin Shin, Eui Soo Kim, Chankyu Kang, Seungho Jung   +3 more
doaj   +1 more source

Effect of Time and Frequency of Magnetic Field Application on MRF Pressure Performance

Micromachines, 2022
This research was conducted to determine the effect of the time and frequency of magnetic field application on MRF pressure performance. It was carried out by placing magnetorheological fluid (MRF) in a U-shaped, glass tube and then repeatedly applying a
Purwadi Joko Widodo, Eko Prasetya Budiana, Ubaidillah Ubaidillah, Fitrian Imaduddin, Seung-Bok Choi   +4 more
doaj   +1 more source