Results 41 to 50 of about 1,133,488 (268)

Research on polymer solution rheology in polymer flooding for Qikou reservoirs in a Bohai Bay oilfield

open access: yesJournal of Petroleum Exploration and Production Technology, 2018
This study explored the potential applications of three newly modified polymers [a linear polymer, a hydrophobic association of partially hydrolyzed polyacrylamide (HAHPAM), and a polymer–surfactant] as flooding agents in a specific oilfield. Rheological
Leilei Tie   +6 more
doaj   +1 more source

Computationally-efficient statistical design and yield optimization of resonator-based notch filters using feature-based surrogates

open access: yesScientific Reports, 2023
Modern microwave devices are designed to fulfill stringent requirements pertaining to electrical performance, which requires, among others, a meticulous tuning of their geometry parameters.
Slawomir Koziel, Tanveerul Haq
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

Optimal Pricing for Optimal Transport [PDF]

open access: yesSet-Valued and Variational Analysis, 2014
Suppose that $c(x,y)$ is the cost of transporting a unit of mass from $x\in X$ to $y\in Y$ and suppose that a mass distribution $μ$ on $X$ is transported optimally (so that the total cost of transportation is minimal) to the mass distribution $ν$ on $Y$.
Bartz, Sedi, Reich, Simeon
openaire   +3 more sources

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola   +4 more
wiley   +1 more source

Research progress of emulsion separation technology in petroleum industry

open access: yesGongye shui chuli
Emulsion separation during crude oil exploitation, transportation and processing is significant for the development of petroleum industry. This paper systematically reviewed the evolution of demulsification technologies, focusing on chemical additive ...
ZHOU Jingjing   +6 more
doaj   +1 more source

Detecting and generating overlapping nested communities

open access: yesApplied Network Science, 2023
Nestedness has been observed in a variety of networks but has been primarily viewed in the context of bipartite networks. Numerous metrics quantify nestedness and some clustering methods identify fully nested parts of graphs, but all with similar ...
Imre Gera, András London
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Maximal sparse convex surrogate-assisted evolutionary convolutional neural architecture search for image segmentation

open access: yesComplex & Intelligent Systems, 2023
Designing reasonable architectures of convolutional neural network (CNN) for specific image segmentation remains a challenging task, as the determination of the structure and hyperparameters of CNN depends heavily on expertise and requires a great deal ...
Wei Wang, Xianpeng Wang, Xiangman Song
doaj   +1 more source

Experimental Study On Rheological Properties Of Mixtures Of Silica Nanoparticles And Wormlike Micelles

open access: yesJournal of Applied Science and Engineering, 2022
This study explored potential applications of a mixtures of nanoparticles and wormlike micelles as a chemica flooding agent in a specific Bohai Bay Oilfield.
Meng Yu   +7 more
doaj   +1 more source

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