35,597 research outputs found
Attending an Exchange Club program are (left to right) Lewis Wheless, Mr. and Mrs. H. H. Wheless, and Captain Hewitt T. Wheless
No full textCaptain Wheless. Exchange Club program. Left to right, Lewis Wheless, Mr. and Mrs. H. H. Wheless, and Captain Hewitt T. Wheless.https://mavmatrix.uta.edu/specialcollections_startelegram1940s/14958/thumbnail.jp
Letter from Carl T. Hayden to C. H. Gensler, Havasupai Reservation
No full textLetter from Carl T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography
Revisiting Tony Price’s (1979) account of the native vegetation of Duck River and Rookwood Cemetery, western Sydney
No full textThe Duck River Reserve and Rookwood Cemetery in the highly urbanised Auburn district of western-Sydney hold small but botanically valuable stands of remnant native vegetation. In the late 1970s, local resident G.A.-(Tony) Price, recognised the value of these remnants, both for the species they held and the clues they could give us-to the past, and spent three years surveying and collecting plants at these sites. Price recorded the species present and-their abundance, and described the habitats in which they were found. He observed the ecology of plant interactions,-moisture, shading and fire response, interpolating them into a picture of the landscape and vegetation of the district-prior to European settlement. At a time when field botany was inaccessible to many, and the focus of conservation was-largely on the broader scale, Price’s local scale work at these sites was unusual and important. Though never formally-published, Price’s 1979 account ‘The Vegetation of Duck River and Rookwood Cemetery, Auburn’ has been cited in-all subsequent work of consequence for the area. This paper presents and reviews Price’s work and discusses his-observations in relation to the current vegetation of these areas. Tony Price’s contributions also highlight the value and-role that ordinary citizens can play alongside professional botanists and plant ecologists in long term data collection,-considered observation and environmental management. A copy of Price’s original unpublished account has been-included as an appendix to this paper
Letter from Charles H. Burke to Carl Hayden
No full textLetter from Charles H. Burke to Carl T. Hayden about mining on Diné (formerly Navajo) national land
Letter from John H. Page to Carl Hayden
No full textLetter from John H. Page to Carl T. Hayden regarding his company's rights to build a railway if they choose to
An L(^2) representation of the continuum in heavy particle collisions
No full textThis thesis is concerned with the use of L(^2) or square integrable functions as a representation of the electronic continua in ion-atom collisions. An exact representation of the continuum states is considered for comparison. The functions are optimised in an attempt to remove some of the arbitrary features present in such calculations. The original work of this thesis is mainly concerned with the calculation of single electron processes in collisions between He(^2+)ions and neutral lithium atoms. The cross sections for single electron capture were calculated in a close-coupled approximation, using the semi-classical impact parameter method. A maximum of thirty-two atomic orbitals with plane-wave translational factors attached were centred upon the target and projectile. Satisfactory agreement with experimental data is obtained over the He(^2+)laboratory energy range from 8 to 2000 keV. The results show the importance of the continuum over a restricted range of impact energies. The rest of the research is concerned with direct excitation and ionisation in the same collision system and results are given for He"^' laboratory energies between 20 and 6000 keV. The calculations used a similar close-coupled approximation with up to sixty-five basis states. The best ionisation cross sections reproduce the experimental data apart from a normalization factor. The excitation results were more sensitive to basis set choice. The ionisation cross sections were also investigated using an exact representation of the continuum states, using the First Born Approximation and a t-matrix approximation in an attempt to improve upon the results. The relationship between the present calculations and some previous methods are discussed and suggestions for future work are made. These are the first close-coupled estimates of ionisation for this sytem and show that contributions from target d- and f- states dominate the ionisation cross section around its maximum
Mesophilic-hydrothermal-thermophilic (M-H-T) digestion of green corn straw
No full textMesophilic-hydrothermal (80-160 degrees C, 30 min)-thermophilic (M-H-T) digestion and control tests of mesophilic (M), thermophilic (T), hydrothermal-mesophilic (H-M), and mesophilic-thermophilic digestion (M-T) of green corn straw were conducted for a 20-day fermentation period. The results indicate that M-H-T is an efficient method to improve methane production. A maximum methane yield of 371.74 mL/g volatile solid was obtained by the M (3 days)-H (140 degrees C)-T (17 days) process, which was 20.44%, 16.55%, 31.44%, and 14.31% higher than the yields of the M, T, 140-M, and M-T processes. The enhanced methane production was attributed to (1) the improved hemicellulose degradation and lignin disorganization; (2) prevention of the degradation of soluble sugar, easily hydrolyzed hemicellulose and cellulose into furfural and methylfurfural; and (3) lack of formation of Maillard reaction products during initial hydrothermal treatment. (C) 2015 Elsevier Ltd. All rights reserved
Letter from Carl Hayden to Charles H. Akers
No full textLetter from Carl Hayden to C. H. Akers on the opposition to the Grand Canyon bill from A. A. Johns, J. W. Sullivan, Jesse Hoyce, T. E. Cureton, and Hugh Campbell. Hayden mentions his failure to contact the governor before the present special session, but expresses hope of the legislature passing a memorial on the subject
Among the Deep Sea Fishers, volume 52, issue 3 (October 1954)
No full textDedication -- Address at the opening / Sir Leonard Outerbridge -- In memory of Mrs. Charles S. Curtis -- A return visit to the coast / Betty Seabrook -- Coast-wise -- Unloading “Maraval” (pictures) -- A busman's holiday / T. L. Badger, M.D. -- Boy with a secret / Winifred H. R. Burgess -- The Governor's visit (pictures) -- Duty first / Ella E. Hewitt -- Gifts and needs -- Newfoundland animals are different / Cecil Hotson -- Alumni news -- The Grenfell Associations.Among the Deep Sea Fishers: the Official Organ of the International Grenfell Association. This journal was published quarterly from 1903 to 1981 with the twofold purpose of providing "a record of Mission activities [and] also a strong and convincing appeal to every supporter and friend of Dr. Grenfell's work." The articles describe mission life, services and experiences. The Mission began under the auspices of the Royal National Mission to Deep Sea Fishermen but later a separate mission, the International Grenfell Association, was formed by Dr. Wilfred Grenfell
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