Results 11 to 20 of about 278,697 (207)
Opportunities, research gaps, and risks in allogenic ecosystem engineer mimicry. [PDF]
Conserv BiolAbstract In an age of anthropogenically driven species loss and increasingly novel ecosystems, ecosystem engineer restoration is a process‐based approach to supporting ecosystem function. Many ecosystem engineers have low or declining population sizes.
Goss B, Baskett ML, Lusardi R.
europepmc +2 more sources
Einstein's unpublished opening lecture for his course on relativity theory in Argentina, 1925 [PDF]
, 2008 In 1922 the University of Buenos Aires (UBA) Council approved a motion to send an invitation to Albert Einstein to visit Argentina and give a course of lectures on his theory of relativity.
Gangui, Alejandro, Ortiz, Eduardo L.
core +2 more sources
Managing daily surgery schedules in a teaching hospital: A mixed-integer optimization approach [PDF]
, 2014 This study examined the daily surgical scheduling problem in a teaching hospital. This problem relates to the use of multiple operating rooms and different types of surgeons in a typical surgical day with deterministic operation durations (preincision ...
Aguirre, Adrian Marcelo +4 more
core +2 more sources
Application of a Fractional Order Integral Resonant Control to increase the achievable bandwidth of a nanopositioner [PDF]
, 2017 The congress program will essentially include papers selected on the highest standard by the IPC, according to the IFAC guidelines www.ifac-control.org/publications/Publications-requirements-1.4.pdf, and published in open access in partnership with ...
Aphale, Sumeet S +2 more
core +1 more source
Mechanical properties of tungsten alloys with Y2O3 and titanium additions [PDF]
, 2011 In this research the mechanical behaviour of pure tungsten (W) and its alloys (2 wt.% Ti–0.47 wt.% Y2O3 and 4 wt.% Ti–0.5 wt.% Y2O3) is compared. These tungsten alloys, have been obtained by powder metallurgy.
A. Martín +11 more
core +5 more sources
Lámpsakos, 2009 Hasta aquí el razonamiento es perfecto, pero, ¿qué es un ingeniero? Algunos dicen que un ingeniero es el queaprovecha los recursos de la naturaleza en beneficio de la humanidad. Esta definición es muy satisfactoria pero ha dejado de ser exacta desde el momento que muchos ingenieros han pasado a ser empleados del Gobierno, y en lugar de aprovechar los ...
openaire +3 more sources
Empresarios nacionales y extranjeros en Colombia durante el siglo XIX
Anuario Colombiano de Historia Social y de la Cultura, 1969 La mayor parte de lo que se ha escrito en idioma ingles sobre la economía de la América Latina en el siglo XIX ha tendido a destacar el papel representado por los innovadores extranjeros, especialmente los ingleses y los norteamericanos.
Frank R. Safford +1 more
doaj +2 more sources
Comparison of two multiaxial fatigue models applied to dental implants [PDF]
Fracture and Structural Integrity, 2015 This paper presents two multiaxial fatigue life prediction models applied to a commercial dental implant. One model is called Variable Initiation Length Model and takes into account both the crack initiation and propagation phases.
JM. Ayllon +3 more
doaj +1 more source