Results 81 to 90 of about 133,574 (342)
THE MAIN FACTOR OF RUSSIAN DIESEL’S COMPETITIVNES ON THE WORLD MARKET
Вестник университета, 2016 Nowadays the developed countries reduce the number of refining capacities, while the developing countries experience the growing demand for petroleum products.
I. Davydov
doaj
Egyptian Journal of Petroleum, 2013 Seven different crude oil samples were collected from two oil fields in the Niger Delta Nigeria. The bulk properties of these crude oils which include API gravity, reid vapour pressure; kinematic viscosity, dynamic viscosity, moisture, gum content and ...
M.C. Onojake, Leo C. Osuji, N.C. Oforka
doaj +1 more source
Recycling of waste engine oils using a new washing agent [PDF]
, 2013 This paper addresses recycling of waste engine oils treated using acetic acid. A recycling process was developed which eventually led to comparable results with some of the conventional methods.
Hamawand, Ihsan +2 more
core +5 more sources
Advanced Functional Materials, EarlyView.Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu +11 more
wiley +1 more source
Egyptian Journal of Petroleum, 2013 Rice husk silica (RHS) was extracted from local rice husk by acid digestion and burning at 650 °C. RHS-Ni catalyst was prepared by dissolving RHS in 1 N NaOH and titrating with 3 N HNO3 containing 10 wt.% Ni2+.
Salah A. Hassan +4 more
doaj +1 more source
An Edible H2O2 Biosensor for Gastrointestinal Metabolites and Peroxidase Enzyme Quantification
Advanced Healthcare Materials, EarlyView.We present an edible biosensor for gastric fluid analysis that integrates a caffeic acid–horseradish peroxidase redox system into an edible electrolyte‐gated transistor. The device enables rapid, low‐volume detection of H2O2 and, with minimal modification, metabolites and enzyme activity in simulated gastrointestinal conditions.
Valerio Francesco Annese +10 more
wiley +1 more source
ANALYSIS OF THE OIL AND PETROLEUM MARKET IN UKRAINE
Zemleustrìj, Kadastr ì Monìtorìng Zemelʹ, 2018 Today, the issues of oil and petroleum products are very important both in the theoretical and practical aspects. Of particular importance is the issue of completeness and compliance with the current market conditions of the existing in Ukraine order ...
V. Vashchenko
doaj
Contribution of geophysical studies on detection of the Petrified Frost Qattamiya, Cairo
Egyptian Journal of Petroleum, 2017 Different geophysical tools such as resistivity, seismic refraction, and magnetic survey have been applied to delineate the subsurface stratigraphy and structural elements, which controlled the distribution and origin of the Petrified wood in Qattamiya ...
Sultan Awad Sultan Araffa +5 more
doaj +1 more source
How Policies to Reduce Greenhouse Gas Emissions Could Affect Employment [PDF]
, 2010 The Congressional Budget Office (CBO) has analyzed the research on the effects that policies to reduce greenhouse gases would have on employment and concluded that total employment during the next few decades would be slightly lower than would be the ...
Congressional Budget Office
core +1 more source
Advanced Healthcare Materials, EarlyView.Myocardial infarction often leads to pathological remodelling and ventricular dilatation, key features of HFrEF. This study introduces a personalized, 3D‐printed cardiac restraint device (CARD) printed using rationally designed inks displaying the requested printability and mechanical properties.
Nicola Mansour +6 more
wiley +1 more source