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Communication of weather theory and information about weather service products to pilots in an accurate and comprehensible manner is essential to flying safety in general. Probably no one needs weather knowledge more than the people who fly through it. The specific subject of this overview is General Aviation's Meteorological Requirements.
Handwritten index card from Newton D. Baker to Charles F., Sr. thanking Brush for sending his fifth paper on gravitation to Baker, who has read it.
Typed letter from Newton D. Baker to Charles F., Sr., thanking Brush for sending his fourth paper on gravitation, which Baker thinks is important for its consideration of composition of mass in calculating gravitational pulls.
Handwritten letter, 1 page, from Newton D. Baker to Charles F., Sr., acknowledging receipt of Brush's article, Discussion of a Kinetic Theory of Gravitation, II, and Some New Experiments in Gravitation.
An overview of the present situation in the field of aircraft icing with respect to certification and operation of nontransport category airplanes is given. Problems of definition and inconsistencies are pointed out. Problems in the forecasting and measurement of icing intensities are discussed. The present regulatory environment is examined with respect to its applicability and appropriateness to nontransport airplanes.
3 dB from the in situ measurement derived prop loss predictions. Significantly larger errors occurred at the COAMPS analysis times. Overall, the results are very promising for this trade wind region, where the air is cooler than the relatively warm sea surface.
When Australian reference cultures of Pseudomonas spp. and pathovars of P. syringae were examined for ice nucleation activity, 14/60 were positive, i.e., 314 isolates of P. syringae pv. pisi and 11/17 isolates of P. syringae pv, syringae. When bacterial isolates from wheat, barley and other grasses in Queensland were tested for ice nucleation activity, 1811 74 were positive of which 5 were P. syringae and 13 were identified using the API 20E system as a relatively uniform biotype of Erwinia herbicola. All but two of the E. herbicola isolates and all of the P. syringae isolates were isolated from wheat and barley at a single site, Wellcamp, near Toowoomba.
The water-Cherenkov tanks of the Pierre Auger Observatory can detect particles at all zenith angles and are therefore well-suited for the study of inclined and horizontal air showers (60 - 90 degrees). Such showers are characterised by a dominance of the muonic component at ground, and by a very elongated and asymmetrical footprint which can even exhibit a lobular structure due to the bending action of the geomagnetic field. Dedicated algorithms for the selection and reconstruction of such events, as well as the corresponding acceptance calculation, have been set up on basis of muon maps obtained from shower simulations.
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