Results 61 to 70 of about 380,756 (310)

Вплив способу отримання заготовки та його технологічних параметрів на якісні показники породоруйнівних елементів доліт [PDF]

open access: yes, 2015
Розглядається проблема дослідження впливу на якісні показники робочої частини бурових доліт способу отримання його породоруйнівних елементів. Досліджено породоруйнівні елементи, виготовлені об'ємним армуванням у нерухомі форми, відцентровим армуванням у
Шуляр, І. О.
core  

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

An effective palynological preparation procedure using hydrogen peroxide [PDF]

open access: yes, 2007
Most pre-Quaternary palynology samples are currently prepared by demineralization of the sediment/sedimentary rock matrix using hydrochloric and hydrofluoric acids (HCl and HF respectively).
Kyffin-Hughes, Jane E.   +2 more
core   +2 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Підвищення якісних показників вставного породоруйнівного оснащення шарошок тришарошкових бурових доліт [PDF]

open access: yes, 2013
Дослідження має на меті вирішення проблеми підвищення якісних показників вставного породоруйнівного оснащення шарошок тришарошкових бурових доліт. Дослідження проводились в умовах реального виробництва бурових доліт, за умов математичного планування ...
Петрина, Ю. Д.   +2 more
core  

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

open access: yesAdvanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich   +6 more
wiley   +1 more source

Predictive plots for conical pick performance using mechanical and elastoplastic properties of rocks

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2020
Conical picks are by far the most widely used drag type cutting tools employed on partial face rock excavation machines. The cutting force and specific energy are two important design parameters for the conical pick performance, and the rock cutting ...
Serdar Yasar
doaj   +1 more source

The geology of strata exposed in Roade railway cutting, Northamptonshire : engineering phase Priority 3 sections and overall assessment [PDF]

open access: yes, 2010
This report describes the geology of the bedrock strata at the Roade railway cutting (a Site of Special Scientific Interest), near Northampton, exposed by engineering works between 2006 and 2010 and made available to the BGS for detailed examination ...
Barron, A.J.M., Woods, M.A.
core  

A fractal fragmentation model for rockfalls [PDF]

open access: yes, 2017
The final publication is available at Springer via http://dx.doi.org/10.1007/s10346-016-0773-8The impact-induced rock mass fragmentation in a rockfall is analyzed by comparing the in situ block size distribution (IBSD) of the rock mass detached from the ...
Corominas Dulcet, Jordi   +2 more
core   +2 more sources

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán   +13 more
wiley   +1 more source

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