Results 81 to 90 of about 581,730 (300)

Soil and Water Contamination due to Illegal Artisanal Refinery Activities: A Case Study of Okarki Community, Niger Delta Area, Nigeria [PDF]

open access: yes, 2019
Using a combination of field visits, laboratory experiments and analyses, this study examined the impacts of illegal artisanal crude oil refineries on the environment. Total Hydrocarbons (THC) and heavy metals in the soil and water bodies as well as pr
Galadima, Muhammed   +3 more
core   +1 more source

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

open access: yesAdvanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale   +3 more
wiley   +1 more source

Crude Oil Volatility: Hedgers or Investors [PDF]

open access: yes
We evaluate differential effects of the trading activity of two classes of traders: hedgers and general investors, on the volatility of the NYMEX crude oil futures returns.
George Milunovich, Ronald Ripple
core  

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke   +3 more
wiley   +1 more source

Formulation of best-fit hydrophile/lipophile balance-dielectric permittivity demulsifiers for treatment of crude oil emulsions

open access: yesEgyptian Journal of Petroleum, 2016
The commerce of crude oil depends heavily on its water and salt contents usually referred to as Basic Sediments and Water (BS&W), which is co-produced with the crude oil in the form of emulsion.
C.M. Ojinnaka   +4 more
doaj   +1 more source

Assessing the factors behind oil price changes [PDF]

open access: yes
The rapid rise in the price of crude oil between 2004 and the summer of 2006 are the subject of debate. This paper investigates the factors that might have contributed to the oil price increase in addition to demand and supply for crude oil, by expanding
Dées, Stéphane   +3 more
core  

Magnetic Droplet Manipulation on Open Surfaces

open access: yesAdvanced Materials Technologies, EarlyView.
Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley   +1 more source

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

open access: yesAdvanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source

The role of CO2 and ion type in the dynamic interfacial tension of acidic crude oil/carbonated brine

open access: yesPetroleum Science, 2019
The effects of CO2 and salt type on the interfacial tension (IFT) between crude oil and carbonated brine (CB) have not been fully understood. This study focuses on measuring the dynamic IFT between acidic crude oil with a total acid number of 1.5 mg KOH ...
Mostafa Lashkarbolooki   +2 more
doaj   +1 more source

Conditional Leptokurtosis in Energy Prices: Multivariate Evidence from Futures Markets [PDF]

open access: yes
We study the joint movements of the returns on futures for crude oil, heating oil and natural gas at a daily frequency. We model the leptokurtic behavior through the multivariate GARCH with dynamic conditional correlations and elliptical distributions ...
Marzo, Massimiliano, Zagaglia, Paolo
core  

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