Results 121 to 130 of about 479,825 (335)

EXPERIENCE IN DEVELOPING THE IMPORT-SUBSTITUTING NATIONAL REFERENCE MATERIALS OF COMPOSITION AND PROPERTIES OF PETROL AND PETROLEUM PRODUCTS UNDER THE PROGRAM OF THE METROLOGICAL ASSURANCE OF PRODUCTION OF THE MINISTRY OF OIL REFINING AND PETROCHEMICAL INDUSTRY OF USSR APPROVED BY THE GOSSTANDART'S DECREE NO. 8 OF 30.01.1986

open access: yesСтандартные образцы, 2017
The article deals with the main stages of the development of activities of INTEGRSO branches in the field of the development of national reference materials of petrol and petroleum products composition and properties under the Program of the metrological
A. Kh. Mukhamedzianov   +1 more
doaj  

Google matrix analysis of the multiproduct world trade network [PDF]

open access: yes, 2015
Using the United Nations COMTRADE database \cite{comtrade} we construct the Google matrix $G$ of multiproduct world trade between the UN countries and analyze the properties of trade flows on this network for years 1962 - 2010.
Ermann, Leonardo, Shepelyansky, Dima L.
core   +4 more sources

Transmembrane Activation of Catalysis and Protein Refolding in Synthetic Cells by Enzymes and Nanozymes

open access: yesAdvanced Functional Materials, EarlyView.
Synthetic cells are engineered herein to respond to an external chemical messenger by the activation of intracellular catalysis. The chemical messenger molecules are catalytically generated by an extracellular enzyme or a mineral surface, whereas the intracellular catalysis emerges via direct enzyme activation or via protein refolding.
Dante G. Andersen   +5 more
wiley   +1 more source

Unveiling the nexus between fuel consumption, vehicle registration, population and GDP of Nepal

open access: yesITEGAM-JETIA
Vehicle numbers soar with the increase in travel demand, thus increasing petroleum consumption, one of the extensive non-renewable resources. The increased demand for travel is also linked to Gross Domestic Product (GDP).
Niraj Bohara, Hemant Tiwari, Mr.
doaj   +1 more source

Water in Petroleum and Petroleum Products

open access: yes
The chapter presents experimental data, published in numerous source materials and reviews, on the mutual solubility of water in hydrocarbons and hydrocarbons in water, relationship of water solubility in hydrocarbons depending on the structure of the organic compound molecule and the change of solubility as a function of temperature.
openaire   +2 more sources

Supramolecular Zwitterionic Hydrogels for Information Encryption, Soft Electronics and Energy Storage at Icy Temperature

open access: yesAdvanced Functional Materials, EarlyView.
A series of ACHPES‐based hydrogels are developed and realizing multiple functions like anti‐fouling properties, alkali‐induced color/fluorescence‐changing ability and strain sensing. Furthermore, the hydrogels show excellent anti‐freezing performance, whose optical, mechanical and electrical properties remain stable at −47.3 °C.
Gaopeng Wang   +9 more
wiley   +1 more source

New evidence on the relationship beetween crude oil and petroleum product prices [PDF]

open access: yes
The present study aims at providing new evidence on the price re- lationships between crude oil and petroleum products. We employ single-equation error correction models (ECM) in which both changes in crude oil price and deviations from the long-run ...
G. Frewer, Mario Denni
core  

Comparison and analysis of biobased/biodegradable and petrochemical cutlery flexibility [PDF]

open access: yes, 2011
Biorenewable plastics are a potential solution to the growing problems of pollution caused by petroleum-based plastics, overcrowded landfills and America\u27s dependency on foreign petroleum.
Demmer, Brian J
core   +2 more sources

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