1,722,260 research outputs found
EMUS
No full text<p>This is the first release of the EMUS source code. It contains a minimal collection of methods necessary, however, extensive testing and updating is still required, as is addition of new functionality.</p>
Ants cannot account for interpopulation dispersal of the arillate pea Daviesia triflora
No full text• Estimating distances and rates of seed dispersal, especially long-distance dispersal (LDD), is critical for understanding the dynamics of patchily distributed populations and species’ range shifts in response to environmental change.
• Daviesia triflora (Papilionaceae) is an ant-dispersed shrub. The ant Rhytidoponera violacea was recorded dispersing its seeds to a maximum distance of 4.7 m, and in more intensive trials seeds of a related species from the study area, to a maximum of 8.1 m.
• Microsatellite DNA markers and population assignment tests identified interpopulation immigrants among 764 plants on 23 adjacent dunes bearing D. triflora, and 13 interpopulation seed dispersal (LDD) events (1.7%) were inferred. The distance between source and sink populations ranged from 410 m to 2350 m (mean 1260 m). These distances exceed ant dispersal distances by two to three orders of magnitude but are comparable with previous measurements of LDD for two co-occurring wing-seeded (wind-dispersed) species from the same system.
• The observed distances of seed dispersal in this arillate species demonstrate the significance of nonstandard dispersal mechanisms in LDD and the independence of these from primary dispersal syndromes. The likely role of emus in dispersal of the many ‘ant-dispersed’ species in Australia is discussed
Emus on the lake
No full textThis video shares a chance encounter with some emus on the edges of Barmah Lake. Emus are flightless and Australia's largest native bird
EMUS: EMUS v0.3.0-prealpha
No full text<p>Object oriented interface extended, additional functionality for asymptotic variances added. Documentation extended.</p>
EMUS-Phased-Array-Anwendungen in Kombination mit dem Adaptersystem "EMUS-VG"
No full textPaper Mo.3.B.3Phased-Array Anwendungen in der Ultraschalltechnik sind seit langem bekannt und werden für die unterschiedlichsten Prüfaufgaben eingesetzt. Auch mit elektromagnetischen Ultraschall (EMUS) Prüfköpfen kann und wird diese Technik seit Jahren insbesondere bei der Prüfung von austenitischen und bimetallischen Schweißnähten dickwandiger Komponenten erfolgreich eingesetzt. Am Fraunhofer IZFP wurde das Adaptersystem "EMUS-VG" entwickelt, das es erlaubt EMUS-Prüfköpfe mit einem konventionellen US-Gerät zu betreiben. Dadurch kann die EMUS-Technik mit deutlich geringeren Kosten für verschiedenste Prüfaufgaben eingesetzt werden. In diesen Beitrag werden EMUS-PA Anwendungen vorgestellt, die in Kombination mit dem oben genannten ""EMUS-VG" und einem konventionellen Ultraschall-Phased-Array-Gerät erzielt wurden
Condition monitoring system for cyclically loaded components using electromagnetic acoustic transducers - EMUS-4-STRESS
No full textThe restructuring of energy production worldwide towards increasing use of solar and wind energy is directly coupled to increasing load dynamics of fossil and nuclear power plants. This leads to a rising amount of stress-induced fatigue. Therefore, the knowledge required for decisions regarding continued operation, maintenance and condition monitoring has to be improved. Regarding piping systems, the development of a method for the monitoring of inner-wall stress is particularly relevant. The overall goal of the project EMUS-4-STRESS is the development of a method for determining the load-induced stress gradient originating from the inner wall of pipe components in case of fast load transients, by means of measurements at the outer wall, and finally fusing the developed approach with Framatome's existing FAMOSi system. The contribution discusses an ultrasonic time-of-flight-based approach that has been developed and successfully demonstrated on a pressurized austenitic pipe of 1.4550 material (X6CrNiNb18-10). Furthermore, core challenges of the ongoing implementation phase of the project are presented, such as high measuring speed (> 10Hz), improved sensitivity, temperature resistance for 350 °C operating conditions and determination of multiaxial loads
Winter poisoning of emus
No full textDuring winter, generally from May to July, is the best time to poison emus in the Northern Wheatbelt reports the Agricultural Protection Board.
This is the time when emus are most likely to eat poisoned grain
Winter poisoning of emus
No full textDuring winter, generally from May to July, is the best time to poison emus in the Northern Wheatbelt reports the Agricultural Protection Board.
This is the time when emus are most likely to eat poisoned grain
Overall Technical Design of Intercity EMUs
No full textAccording to position and function of intercity EMUs, the EMUs design principle was expounded, and top-level technical index of the EMUs was researched. Overall design of vehicles clearance, vehicles power supply, speed levels, passenger carrying capacity, axle load, traction and brake was discussed in detail. Intercity EMUs type spectrum of CINOVA technical platform was introduced, as well as development and 0.3 million km operation of the EMUs
EMUS-Gerätetechnik - Stand, Anwendungen, Entwicklungstendenzen
No full textS.596-603The state of the art of the EMUS (electromagnetic-ultrasonic) system technology is illustrated presenting as examples two typical systems, an 8-channel phase array system for ultrasonic inspections in the field especially of the primary circuit of nuclear power plants, and a 2-channel standard system. The phased array technique provides a significant enhacement of the signal-to-noise ratio and the bandwidth, suppression of the sensitivity in the backward direction of the ultrasonic probe, and allows electronic setting and changing of the angle of incidence at a fixed frequency. Production costs of EMUS systems will be reduced by modular design of all electronic components. Miniaturization using SMD and PAL technology will alow to build e.g. a 8-channel phased array system housing with a height of 150 mm. Miniaturized EMUS probes allow new applications of the EMUS technique utilizing Rayleigh waves, shear horizontal waves, and normally incident linearly polarized shear waves
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