10,144 research outputs found
Green River, [Wyoming] [picture] /
No full textTitle from caption.; In: Sketches of facts & fancy, drawings of buildings and sceneries.; Part of the Richard Wingfield Stuart sketchbooks.; Condition: Foxing, yellowing and centre detached from binding.; Image across two pages of album.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-vn3769535-s50; Donated through the Australian Government's Cultural Gifts program by Mary Collom, 2006. Panoramic view of Green River, Wyoming
Australian sketches [picture] /
No full textPart of the Richard Wingfield Stuart sketchbooks.; Title from cover.; Condition: Yellowing and foxing.; Inscriptions: "To W.E. Parry Okeden, From his loving old chum Richard Wingfield Stuart, To keep the memory green, years ago he asked me to give this book to you. Belle Stuart Tenterfield 1914"--In ink on first page. "Barbara Geddes (nee Parry Okeden) From C T Parry Okeden Redcliff Q'land March 1965. All sketches & verse by R.W. Stuart. See back "Son of Australia" - W.E. POs [William Edward Parry Okeden] reminiscences"--In pen on first page.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-vn3769442; Donated through the Australian Government's Cultural Gifts program by Mary Collom, 2006. All sketches and verse by R.W. Stuart, includes photograph of Stuart Hall, Ireland. Sketchbook also includes poems titled: Balaklava; Music August 1868; Columbus and the wild mob; the remaining poems are untitled
Letter from Ben E. Green to A. H. H. Stuart with letters from D. C. Labatt and L. L., 1852
No full textGreen urges Stuart to respond to the enclosed letter from D.C. Labatt of New Orleans in regard to a draft for $7000 in favor of John Chalres Fremont and endrosed by Adam Johnston. Luke Lea replies that the draft does not have the means of honoring it
Tennessee roads / Jesse Stuart. In Mountain herald / Lincoln Memorial University.
No full textThis picturesque poem was written by then-sophomore (and future celebrated author) Jesse Stuart about the roads of Tennessee
No. 617 Stuart Ruckman
No full textTranscript (12, 40 pages) of two interviews by Matt Driscoll with Stuart Ruckman on April 9, 2010, and July 7, 2011Ruckman (b. 1966) was born in Salt Lake City, Utah. Stuart shares how his family, particularly his father, played a significant role in introducing him to the outdoors. Some of his initial explorations included a hike to the top of Mount Olympus when he was five years old, backpacking trips in the Wasatch and Uinta Mountains, and a successful summit attempt on the Grand Teton when he was twelve. Stuart discovered technical rock climbing due to the influence of his older brother Bret, five years Stuart\u27s senior. Bret learned under Dennis Turville, a well-respected Salt Lake climbing instructor. Stuart shares his observations on the Salt Lake climbing community of the late 1970s and 1980s, noting the intimacy of the community, while also pointing out the significant influence of a handful of climbers, including Merrill Bitter, Les Ellison, and Brian Smoot. He briefly describes the proliferation of new-route development in the Wasatch during his first decade in climbing. In collaboration with his brother Bret, Stuart published comprehensive guidebooks on climbing in the Wasatch Mountains. Stuart\u27s contributions as a first-ascensionist and co-author of Rock Climbing the Wasatch Range attest to his lasting impact on Utah climbing. Interview is part of the Outdoor Recreation History Project. Interviewer: Matt Driscol
Electrothermal pumping with interdigitated electrodes and resistive heaters
No full textInterdigitated electrodes are used in electrokinetic lab-on-a-chip devices for dielectrophoretic trapping and characterization of suspended particles, as well as the production of field-induced fluid flow via AC electroosomosis and electrothermal mechanisms. However, the optimum design for dielectrophoresis, that if symmetrical electrodes, cannot induce bulk electrohydrodynamic pumping. In addition, the mechanism of intrinsic electrothermal pumping is affected by the properties of the fluid, with thermal fields being generated by Joule Heating. This work demonstrates the incorporation of an underlying thin film heater, electrically isolated from the interdigitated electrodes by an insulator layer, to enhance bulk electrothermal pumping. The use of integrated heaters allows the thermal field generation to be controlled independently of the electric field. Numerical simulations are performed to demonstrate the importance of geometrical arrangement of the heater with respect to the interdigitated electrodes, as well as electrode size, spacing, and arrangement. The optimization of such a system is a careful balance between electrokinetics, heat transfer, and fluid dynamics. The heater location and electrode spacing influence the rate of electrothermal pumping significantly more than electrode width and insulator layer thickness. This demonstration will aid in the development of microfluidic electrokinetic systems that want to utilize the advantages associated with electrothermal pumping while simultaneously applying other lab-on-a-chip electrokinetics like dielectrophoresis
George MacLeod’s open-air preaching: performance and counter-performance
No full textStuart Blythe uses the methodology of performance to analyse George MacLeod’s open-air preaching. He points out that MacLeod’s preaching was derived from a theology of the incarnation, and an understanding of the paradoxes and dichotomies of common human life. This preaching, Blythe suggests, was also a counter-performance in the context of outlooks and ideologies inimical to the gospel. The paper raises interesting issues related to preaching as performance, and the further question as to whether or not the life and work of the Church as a whole might now be better understood as a counter-performance.Publisher PD
Stuart, Jesse Hilton, 1907-1984 (SC 1557)
No full textFinding aid and scan (Click on Additional Files below) for Manuscripts Small Collection 1557. Letter, 10 March 1976, from Kentucky author Jesse Hilton Stuart, W-Hollow, Greenup, Kentucky, to John Howard Spurlock, Bowling Green, Kentucky, related to He Sings for Us , Spurlock\u27s book about Stuart\u27s writings
Technique of green mulch spreading
No full textFinland’s policy of subsidising the conversion to organic production precipitated the rapid growth of organic farming in the 1990’s. As a consequence, many stockless farms encountered the problems of nitrogen deficit, poor grain quality, and weed control. Since the spreading of green mulch on cash crops is very common especially in tropical agriculture, organic fertilisers like green mulch may be an alternative that would compensate for the prohibition on the use of mineral N-fertilisers. However, one problem is that presently there is no appropriate technique available to substitute for the strenuous handwork of spreading green mulch.
The main subject of this research report is the technique of green mulch spreading. Between 1994 and 1997, a green mulch spreading prototype was developed and tested. An evaluation of four different spreading techniques, including the prototype, revealed that the optimal technique was still not found and that none of the techniques considered in this report achieved the quality of hand work. The prototype did, however, allow us to perform experiments using different green mulch crops and/or mixtures of green mulch crops to a greater extent.
From 1996-1999 experiments were conducted using the following crops as green mulch: rye Secale cereale, red clover Trifolium pratense, alfalfa Medicago sativa, timothy Phleum pratense, meadow fescue Festuca pratensis, reed canary grass Phalaris arundinaceae and different mixtures of them. Green mulch was applied to following cash crops: Cabbage Brassica oleracea var. capitata, burdock Arctium lappa, valerian Valeriana, peppermint Mentha piperita, anise hyssop Agastache foeniculum, stinging nettle Urtica dioica, spring wheat Triticum aestivum, and spring barley Hordeum vulgare.
The experiments produced the following results: 1) The fertilising effect of green mulch application is ambiguous. 2) Weather conditions influence both the mineralisation and the quantity of green mulch, the timing, and the frequency of mulching. 3) Persisting green mulch cover can be achieved using rye or reed canary grass. 4) An area ratio of 4 : 1 green mulch crop : cash crop seems to be sufficient for weed control. 5) With the exception of wet young red clover, all of the green mulch crops used were suitable for the prototype machine.
On condition that the weather is suitable, the strip intercropping technique in combination with the row mulching machine of Fischer Ltd. is presently the best available green mulch spreading-technique. Only zero traffic technology such as gantry technology offers perfect green mulch spreading which is independent from weather and soil conditions. However, even improved spreading technique does not solve the other problem, which is caused by weather conditions: Uncertain growth and mineralisation of green mulch. This is mainly a problem in North European countries where conditions are the opposite of those in tropical areas. In tropical areas, temperature and humidity always ensure both, vigorous growth and rapid mineralisation.
In any event, a legume-rich crop rotation and organic manure from livestock would be the better alternative for fertilisation in organic farming under North European conditions. Another alternative is the use of milled seeds of legumes, hornmeal or cake of Ricinus communis. For these materials, traditional fertilising machinery is available. The application of these organic fertilisers is not weather dependent and they can be produced and purchased far from the location of application.
The worldwide application of green mulch is essential for a sustainable agriculture. Although in most tropical countries spreading is still done by hand, the mechanisation of green mulch spreading will gain increasing importance in the near future.
TABLE OF CONTENT
Acknowledgements 7
1. Introduction 8
2. State of knowledge on green mulch research 8
2.1 Green mulch crops 8
2.2 Green mulch effects 9
2.2.1 Mineralisation and fertilisation 9
2.2.2 Weed control 10
2.2.3 Pest control 11
2.2.4 Soil temperature and soil moisture 11
2.2.5 Soil fertility and N-losses 11
3. State of green mulch technology 12
3.1 Machines for grassland 12
3.2 Machines for berries and fruit trees 14
3.3 Machines for cereals 16
3.4 Machines for maize 16
3.5 Machines for potato 17
4. Design of a prototype machine for green mulch spreading in row crops 17
4.1 Knowledge base when starting 1994 17
4.2 Design and testing 18
4.3 Conclusions 21
5. Evaluation of green mulch spreading techniques in row crops 24
5.1 Techniques of green mulch spreading 24
5.1.1 Technique A: Modified manure spreader 24
5.1.2 Technique B: Modified flail 24
5.1.3 Technique C: Combination of modified manure spreader and modified flail 25
5.1.4 Technique D: Modified disc mower 25
5.2 Evaluation methods 25
5.2.1 Calculation of working time 26
5.2.2 Rating of process criteria 27
5.2.3 Cost calculation 28
5.3 Results and discussion 29
5.4 Conclusions 30
6. Experiments with green mulch 30
6.1 Experiments in 1996 with cabbage 30
6.1.1 Practical tests using the green mulch prototype machine 30
6.1.1.1 Material and methods 30
6.1.1.2 Results 41
6.1.1.3 Conclusions 43
6.1.2 Field experiments spreading green mulch by hand 43
6.1.2.1 Material and methods 43
6.1.2.2 Results 44
6.1.2.3 Conclusions 46
6.2 Experiments in 1997 with beetroot 47
6.2.1 Material and methods 47
6.2.3 Results 47
6.2.3 Conclusions 49
6.3 Experiments with spring cereals in 1998 and 1999 49
6.3.1 Material and methods 49
6.3.1.1 Design and operations in the field experiment 50
6.3.1.2 Fertilising techniques 51
6.3.1.3 Plant and soil analysis 52
6.3.1.4 Statistical analysis 52
6.3.1.5 Calculation of N-balance 53
6.3.2 Results and discussion 53
6.3.3 Conclusions 61
7. Conclusion 61
References 6
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