Results 131 to 140 of about 304,591 (360)

Stability and Behavior of Bulk Nanobubbles Under Reservoir Conditions

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Compared with microbubbles, nanobubbles exhibit superior stability, higher specific surface area, and smaller size. These characteristics have increasingly attracted the attention of petroleum researchers. However, existing literature lacks studies on nanobubble concentration and size under harsh reservoir conditions. To address this gap, this
Chuanying Zhang   +5 more
wiley   +1 more source

Mechanism of Hydrogen Sulfide Generation and Prevention Strategies in Oil and Gas Fields: A Case Study of the Sickle Bay Operation Area

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT To address the persistent exceedance of hydrogen sulfide (H2S) concentrations and the limited effectiveness of existing treatments in the Sickle Bay oil production area, this study deeply analyzes the mechanism of H2S generation in the Sickle Bay oil production area and proposes targeted prevention and control strategies. The results show that
Bo Lei   +7 more
wiley   +1 more source

Lateral migration of hillcrests in response to channel incision in soil-mantled landscapes [PDF]

open access: yes, 2005
Anderson   +57 more
core   +1 more source

Geology of the Northern Llano Uplift, Junction to Llano, Texas [PDF]

open access: yes, 2016
This year\u27s Texas Academy of Science Geology Field Trip will visit nine interesting locations in two different areas in the Texas Hill Country (Figure 1). In the first area we will look at the Cretaceous stratigraphy around Junction, Texas (Figures 1,
Barker, Chris, Nielson, R. LaRell
core   +1 more source

Characterization and Modeling of Industrial Phosphoric Acids' Rheological Behavior: Impact of Magnesium Monoxide on Viscosity

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the rheological behavior of industrial phosphoric acids (H3PO4) produced at the JORF–LASFAR phosphoric plant in Morocco, with P2O5 concentrations of 18%, 29%, 42%, and 54%. Rheological measurements were performed using a rotary cylinder rheometer over a shear rate range of 1–1000 s−1.
Hamza Belbsir   +6 more
wiley   +1 more source

Zinc-lead-copper resources and general geology of the Upper Mississippi Valley district [PDF]

open access: yes, 1955
From introduction: This report discusses the general geology of the Upper Mississippi Valley zinc-lead district, the distribution of ore deposits, and some relations of the ore deposits to the major geologic features.
openaire   +1 more source

Exploring the Potential of Geological Siliceous Earth as a Natural Alternative to Silica in Rubber Composites

open access: yesJournal of Applied Polymer Science, EarlyView.
Maximizing the reinforcement potential of natural siliceous earth as a sustainable alternative to commercial silica for the rubber and tire industry, from the perspectives of mechano‐chemical modification, dispersion, and impacts on the mechanical and nonlinear dynamic behavior of SSBR composites.
Onny Aulia Rachman   +2 more
wiley   +1 more source

Археометрия в България през последните десет години

open access: yesБългарско е-Списание за Археология, 2016
The paper summarizes all papers published by Bulgarian scientists in the field of archaeometry, issued in the last decade. The archaeometric investigations in Bulgaria cover the analyses of chemical composition of bronze, gold, silver, lead, glass, glaze,
Boika Zlateva, Ivelin Kuleff
doaj  

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