Results 141 to 150 of about 22,098 (322)
physica status solidi (RRL) – Rapid Research Letters, EarlyView.A two‐step approach based on broad‐beam ion irradiation is demonstrated to produce fine‐tuned self‐assembled surface patterns on MgO(001). It shows an efficient route to modifying the crystalline MgO(001) surface topography in a controlled way, making use of its very specific behavior in terms of both the pattern morphology and patterning dynamics.
Denise J. Erb, Stefan Facsko
wiley +1 more source
Peaceable kingdoms and war zones: Pre-emption, ballistics and murder in Newark
, 2007 Brendan O’Flaherty, Rajiv Sethi
openalex +1 more source
Subterranean Mine Inspection Using the Prometheus Re‐Configurable Drone
Journal of Field Robotics, EarlyView.ABSTRACT This paper describes the design, development, and real‐world testing of an autonomous drone for subterranean exploration, known as “Prometheus.” Driven by requirements from industry that the drone be able to be deployed through areas of restricted access, Prometheus was designed to be directly deployed through a 150 mm aperture.
Liam Brown +8 more
wiley +1 more source
A brief report of the discussion on the study of ballistics in the universities
, 2013 Roli Varma
openalex +2 more sources
Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review
SmartBot, EarlyView.Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen +7 more
wiley +1 more source
Research in volcanic geology, petrology and planetary science at MIT, 1969 to 1974 [PDF]
The behavior of volcanoes was studied by geologic mapping, petrologic investigations of lava and xenoliths, physical measurements, and theoretical modelling. Field observations were conducted in Alaska (Nunivak Island), Iceland, Hawaii (Mauna Kea), Italy
Mcgetchin, T. R.
core +1 more source
When does category spanning hurt or help producers?
Strategic Management Journal, EarlyView.Abstract Research Summary Scholars have theorized many factors shaping whether category spanning helps or hurts producers. We first synthesize evidence by meta‐analyzing 25 years of empirical research, which reveals a null effect of spanning on average, yet with significant subsample heterogeneity. To unpack it, we theorize and find that spanning hurts
Jungsoo Ahn +2 more
wiley +1 more source
Evaluation of candidate working fluid formulations for the electrothermal - chemical wind tunnel [PDF]
Various candidate chemical formulations are evaluated as a precursor for the working fluid to be used in the electrothermal hypersonic test facility which was under study at the NASA LaRC Hypersonic Propulsion Branch, and the formulations which would ...
Akyurtlu, Ates, Akyurtlu, Jale F.
core +1 more source
Small, EarlyView.A one‐step oblique angle reactive sputtering approach enables simultaneous tuning of bulk and interfacial stoichiometry in a metal oxide/ silicon heterojunction. In case of vanadium oxides, growth angle variation controls the formation of stoichiometric SiO2, ternary SiOx(V) interlayer, and phase purity of vanadium oxide, considerably simplifying the ...
Aparajita Mandal +3 more
wiley +1 more source
Video camera system for locating bullet holes in targets at a ballistics tunnel [PDF]
A system consisting of a single charge coupled device (CCD) video camera, computer controlled video digitizer, and software to automate the measurement was developed to measure the location of bullet holes in targets at the International Shooters ...
Burner, A. W. +2 more
core +1 more source