Results 21 to 30 of about 486,818 (332)

The Vip3Ag4 Insecticidal Protoxin from Bacillus thuringiensis Adopts A Tetrameric Configuration That Is Maintained on Proteolysis

open access: yesToxins, 2017
The Vip3 proteins produced during vegetative growth by strains of the bacterium Bacillus thuringiensis show insecticidal activity against lepidopteran insects with a mechanism of action that may involve pore formation and apoptosis.
Leopoldo Palma   +8 more
doaj   +1 more source

Enhancing Surface Topology of Udimet®720 Superalloy through Ultrasonic Vibration-Assisted Ball Burnishing

open access: yesMetals, 2020
This contribution reports the effects of an ultrasonic-vibration assisted ball burnishing process on the topological descriptors of nickel-based alloy Udimet®720. This material is of high interest for the transportation industry, and specifically for the
Ramón Jerez-Mesa   +3 more
doaj   +1 more source

Frequency selective surface with complex topology elements

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2021
Relevance: The solution of specific problems in modern technology of microwave and UHF ranges, such as the implementation of reducing the radar signature of objects, spatial frequency-selective filters, reflectors requires the development and creation of
D. V. Mayboroda, S. A. Pogarsky
doaj   +1 more source

The change of Fermi surface topology in Bi2Sr2CaCu2O8 with doping [PDF]

open access: yes, 2005
We report the observation of a change in Fermi surface topology of Bi2Sr2CaCu2O8 with doping. By collecting high statistics ARPES data from moderately and highly overdoped samples and dividing the data by the Fermi function, we answer a long standing ...
A. Kaminski   +11 more
core   +2 more sources

Electrically Tunable Quantum Spin Hall State in Topological Crystalline Insulator Thin films [PDF]

open access: yes, 2015
Based on a combination of $k \cdot p$ theory, band topology analysis and electronic structure calculations, we predict the (111) thin films of the SnTe class of three-dimensional (3D) topological crystalline insulators realize the quantum spin Hall phase
Fu, Liang, Liu, Junwei
core   +3 more sources

FRACTAL STRUCTURE OF TITANIUM NITRITE DEPOSITED ON STAINLESS STEEL SUBSTRATE

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2014
On the basis of images obtained using scanning tunneling microscope, it was shown that the fractal dimension can be considered as some universal surface characteristic of the titanium nitrite, deposited on stainless steel.
Yu..V. Brylkin
doaj   +1 more source

Anomalies of a topologically ordered surface [PDF]

open access: yesScientific Reports, 2015
AbstractBulk insulators with strong spin orbit coupling exhibit metallic surface states possessing topological order protected by the time reversal symmetry. However, experiments show vulnerability of topological states to aging and impurities. Different studies show contrasting behavior of the Dirac states along with plethora of anomalies, which has ...
Biswas, Deepnarayan   +4 more
openaire   +3 more sources

Multi-legged adaptable crawler capable of maintaining a constant pose locomotion over rugged terrain

open access: yesNihon Kikai Gakkai ronbunshu, 2018
In this paper, we introduce practical design and hardware implementation issues of an adaptable crawler mechanism for a mobile robot, enabling it to maintaining its constant desired pose when moving.
Shu TAKAIRA   +2 more
doaj   +1 more source

The metric space of geodesic laminations on a surface II: small surfaces [PDF]

open access: yes, 2005
We continue our investigation of the space of geodesic laminations on a surface, endowed with the Hausdorff topology. We determine the topology of this space for the once-punctured torus and the 4-times-punctured sphere.
Bonahon, Francis, Zhu, Xiaodong
core   +2 more sources

RELATION BETWEEN FRACTAL DIMENSION AND SURFACE ROUGHNESS FOR THE COPPER SAMPLES [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013
Microscopic characteristics of copper surfaces with different roughness were produced using scanning tunnel microscope and fractal analysis.
Yu.V. Brylkin, A.L. Kusov
doaj  

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