5,716 research outputs found
Diary of C. J. Sanders
No full textDiary - This document is the personal diary of Constance Jukes Sanders, daughter of Gilbert E. Sanders, Superintendent of the Northwest Mounted Police 1905-1908. The diary begins on August 27, 1910, and ends April 6, 1911. Diary entries include daily activities of C. J. Sanders during her nineteenth and twentieth years, while living in Athabasca Landing with her parents. C. J. spent her days doing housework at the family's home, and often taught Sunday School at the local church. A favourite pastime was having friends over to play bridge in the evening, or riding ponies during the daytime. Church was a big part of the family's week. The women also spent a lot of time cooking, cleaning and sewing. C. J. took a boat over to Europe with her mother and father just before Christmas in 1910. She was very seasick during the trip. While in Europe they visited family and friends in England, Ireland and France (45 pages
Implementation research is needed to achieve international health goals.
No full textSanders and Haines discuss the "knowledge-implementation gap" and identify key obstacles to correcting the gap
Sanders, Robert Lee, b. 1912 (SC 2368)
No full textFinding aid only for Manuscripts Small Collection 2368. The Military Career of Don Carlos Buell During the Civil War, by Robert Lee Sanders, a thesis submitted in partial fulfillment of the requirements for the Master of Arts degree, University of Kentucky, Lexington, Kentucky, 1937. Includes a biographical sketch of the author
Pelican Portage - 02
No full textPhotograph - A group of people standing among three teepees, Pelican Portage, Alberta. A note on the back reads: Pelican Portage August 1910. A holiday trip. 3 natives, Connie Sanders, Mrs. Falconer and baby Jean, Mrs. Cull, Mrs. Kehoe, Phoebe Sanders, Mrs. Sanders, B. Wagner and Mr. Keho
Book Sub-Committee, Town of Athabasca 75th Anniversary Celebration - 06
No full textPhotograph - Members of the Book Sub-Committee, part of the Town of Athabasca 75th Anniversary Committee, Athabasca, Alberta. The Book Sub Committee produced the book "Athabasca Landing: An Illustrated History". Back row, left to right: Louis Da Costa, Eileen Hendy, Dr. David Gregory, Bob Zebic, Vi Kowalchuk, Mayor Tony Schinkinger, Bob Tannas. Seated: Edith Jordan, Gilda Sanders, Glenda Waddle, Alice Donahue, Dr. Josephine Brow
PUL882623 Supplemetal Material - Supplemental material for Metabolomics of exercise pulmonary hypertension are intermediate between controls and patients with pulmonary arterial hypertension
No full textSupplemental material, PUL882623 Supplemetal Material for Metabolomics of exercise pulmonary hypertension are intermediate between controls and patients with pulmonary arterial hypertension by Jason L. Sanders, Yuchi Han, Mariana F. Urbina, David M. Systrom and Aaron B. Waxman in Pulmonary Circulation</p
Introducing AI into MEMS can lead us to brain-computer interfaces and super-human intelligence
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Heme b in marine cyanobacteria and the (sub-) tropical North Atlantic
No full textHeme b is the iron containing prosthetic group to an important pool of iron proteins known as the hemoproteins. Hemoproteins are functionally diverse, playing key roles in photosynthetic and respiratory electron transfer (e.g. cytochrome b6f, photosystem II, cytochrome bc1) among other fundamental biological processes. Heme b is the most naturally abundant heme structure, but data regarding hemes in the marine environment are limited. An investigation has been conducted to improve our understanding of heme b abundance in marine organisms through laboratory monoculture studies of three marine cyanobacteria grown under varying total iron concentration. The unicellular cyanobacteria Synechococcus sp. WH7803 was examined under three total iron concentrations: 12 nmol L-1 (low), 120 nmol L-1 (medium) and 1200 nmol L-1 (high). The marine diazotrophs (i.e. nitrogen fixers) Crocosphaera watsonii (WH8501) and Trichodesmium erythraeum (IMS101) were studied under six total iron concentrations between 0 and 120 nmol L-1. Cultures were analysed for heme b, chlorophyll a, particulate organic carbon (POC) and particulate organic nitrogen (PON) concentration. Nitrogen fixation rates and biophysical measurements (Fv/Fm and ?PSII) were also obtained for diazotroph cultures. Field data regarding the concentration of heme b, chlorophyll a, POC and PON as well as nitrogen fixation rates were collected during two research cruises in the subtropical North Atlantic (STNA, D346) and tropical North Atlantic (TNA, D361); an oceanographic region known to demonstrate high nitrogen fixation rates and receive significant dust (iron) deposition from the Saharan and Sahel deserts of Western Africa.Cultures of Synechococcus sp. WH7803 showed evidence of iron stress at low iron treatments via reduced maximum growth rates (?max), total biovolume and chlorophyll a concentration. This was also reflected by a significant reduction in cellular heme b content per unit carbon (heme:C) at the lowest iron concentration. An estimated heme b requirement between 1.0 and 1.5 ?mol mol-1 C is proposed for Synechococcus sp. WH7803 in order to facilitate ?max. Chlorophyll a to heme b ratios (chl:heme) were significantly decreased in low iron cultures of Synechococcus sp. WH7803, suggesting b-type hemoproteins were conserved when iron stressed. Cultures of Crocosphaera and Trichodesmium were similarly influenced by the availability of iron, with reduced total biovolume and chlorophyll a concentration reported at low iron treatments. However, heme:C ratios were maintained at approximately 1.5 and 0.5 ?mol mol-1 C for Crocosphaera and Trichodesmium cultures, respectively. A high iron requirement is associated with marine diazotrophs relating to the iron-rich non-heme nitrogenase enzyme complex responsible for nitrogen fixation. Nitrogen fixation rates increased as total iron concentration increased, with Trichodesmium demonstrating four-fold higher rates than Crocosphaera at corresponding iron concentrations. It has been suggested that relatively low heme b contents of Trichodesmium cultures resulted from increased nitrogen fixation activity. Furthermore, heme:C ratios of Crocosphaera and Trichodesmium were typically lower than five eukaryotic phytoplankton previously investigated, potentially related to the allocation of iron for nitrogen fixation. Mean heme:C ratios from cruises in the STNA and TNA were 0.64 and 0.66 ?mol mol-1 C, respectively. Results could imply the region was iron stressed and/or dominated by cyanobacteria. Evidence is also presented suggesting a possible inverse relationship between nitrogen fixation and heme:C ratio in the TNA which could be attributed to natural populations of Trichodesmium
Simple rules to modify pre-planned paths and improve gross robot motions associated with pick & place assembly tasks
No full textPurposeThis paper aims to describe real time improvements to the performance and trajectories of robots for which paths had already been planned by some means, automatic or otherwise. The techniques are applied to industrial robots during the gross motions associated with pick and place tasks. Simple rules for path improvement are described.Design/methodology/approachThe dynamics of the manipulator in closed form Lagrange equations are used to represent the dynamics by a set of second‐order coupled non‐linear differential equations. The form of these equations is exploited in an attempt to establish some simple rules. Sub‐optimal paths are improved by considering simple rules developed from the model of the machinery dynamics. By considering the physical limitations of the manipulator, performance was improved by refining pre‐calculated paths. Experiments were performed with a prototype robot and an old Puma 560 robot in a laboratory environment. Once the method had been tested successfully then experiments were conducted with a Kuka KR125 Robot at Ford Motor Company. The measured quantities for all the robots were drive currents to the motors (which represented the torques) and the joint angular positions.FindingsThe method of path refinement presented in this paper uses a simplified model of the robot dynamics to successfully improve the gross motions associated with a pick and place task. The advantage of using the input‐output form described was that intermediate non‐linearities (such as gear friction) and the motor characteristics were directly incorporated into the model.Research limitations/implicationsEven though many of the theoretical problems in manipulator dynamics have been solved, the question of how to best apply the theories to industrial manipulators is still being debated. In the work presented in this paper, information on system dynamics is used to produce simple rules for “path improvement”.Practical implicationsMost fast algorithms are for mobile robots and algorithms are scarcer for manipulators with revolute joints (the most popular type of industrial robot). This work presents real time methods that allow the robot to continue working while new global paths are automatically planned and improved as necessary.Originality/valueMotion planning for manipulators with many degrees of freedom is a complex task and research in this area has been mostly restricted to static environments, offline simulation or virtual environments. This research is applied in real time to industrial robots with revolute joints.</jats:sec
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