Results 101 to 110 of about 1,237,224 (236)

Bitcoin: A Natural Oligopoly [PDF]

arXiv, 2018
Although Bitcoin was intended to be a decentralized digital currency, in practice, mining power is quite concentrated. This fact is a persistent source of concern for the Bitcoin community. We provide an explanation using a simple model to capture miners' incentives to invest in equipment.
arxiv  

Microfacies control on geomechanical properties of unconventional carbonate reservoirs: insights from a middle jurassic outcrop analogue in Saudi Arabia

Journal of Petroleum Exploration and Production Technology
The interplay between depositional and diagenetic processes controls the distribution of geomechanical properties in carbonate rocks. Understanding the distribution of geomechanical properties in rocks is crucial for analyzing the behavior of ...
Adamu Kimayim Gaduwang, Daniel Muñoz-López, Anas Muhammad Salisu, Bassam Tawabini, Khalid Al-Ramadan, Ardiansyah Koeshidayatullah   +5 more
doaj   +1 more source

Mineral and cross-linking in collagen fibrils: The mechanical behavior of bone tissue at the nano-scale [PDF]

arXiv
The mineralized collagen fibril is the main building block of hard tissues and it directly affects the macroscopic mechanics of biological tissues such as bone. The mechanical behavior of the fibril itself is determined by its structure: the content of collagen molecules, minerals, and cross-links, and the mechanical interactions and properties of ...
arxiv  

The Next 700 Policy Miners: A Universal Method for Building Policy Miners [PDF]

arXiv, 2019
A myriad of access control policy languages have been and continue to be proposed. The design of policy miners for each such language is a challenging task that has required specialized machine learning and combinatorial algorithms. We present an alternative method, universal access control policy mining (Unicorn).
arxiv  

The thermodynamic basis for the mineral facies concept [PDF]

, 1955
James B. Thompson
openalex   +1 more source

Formation and preservation of polyhalite-containing rocks in the halogen sediments of the Southern Cis-Urals

Литосфера, 2019
Research subject. In this research, we set out to investigate polyhalite-containing rocks of the Southern Urals. The purpose of this study was to characterize the patterns of formation and transformation of polyhalite-containing rocks, as well as to ...
A. K. Vishnyakov, M. S. Vafina, V. I. Poklonov   +2 more
doaj   +1 more source

Minerals in Afghanistan : gemstones of Afghanistan [PDF]

, 2007
Afghanistan and gemstones have been inextricably linked for 6500 years and the country remains rich in precious and semiprecious gemstone deposits (Figure 1). Lapis lazuli, mined in the Hindu Kush since the Neolithic Period, was transported along the
Benham, Antony John, McIntosh, Robert
core  

Studies on the Mineral Nutrition of Cassava (Manihot Utilissima Pohl.). [PDF]

, 1955
Eduardo Angeli Malavolta, E. A. Graner, T. Coury, M. O. C. Brasil Sobr°, Juan Pacheco   +4 more
openalex   +1 more source

The Economic Value of Industrial Minerals and Rocks for Developing Countries: A Discussion of Key Issues [PDF]

This paper provides a few general comments on the nature and economic value of industrial minerals and rocks and the need for an increased exploitation and use of these materials in developing countries.
Amavilah, Voxi Heinrich, Wilson, Tetevi Bahun   +1 more
core   +1 more source

Kroehnkite, natrochalcite (a new mineral), and other sulphates from Chile [PDF]

, 1908
C. Palache, C. H. Warren
openalex   +1 more source