26,766 research outputs found
Firmware Development Improves System Efficiency
Most manufacturing processes require physical pointwise positioning of the components or tools from one location to another. Typical mechanical systems utilize either stop-and-go or fixed feed-rate procession to accomplish the task. The first approach achieves positional accuracy but prolongs overall time and increases wear on the mechanical system. The second approach sustains the throughput but compromises positional accuracy. A computer firmware approach has been developed to optimize this point wise mechanism by utilizing programmable interrupt controls to synchronize engineering processes 'on the fly'. This principle has been implemented in an eddy current imaging system to demonstrate the improvement. Software programs were developed that enable a mechanical controller card to transmit interrupts to a system controller as a trigger signal to initiate an eddy current data acquisition routine. The advantages are: (1) optimized manufacturing processes, (2) increased throughput of the system, (3) improved positional accuracy, and (4) reduced wear and tear on the mechanical system
Rethinking Energy Policy in Central and Eastern Europe
This paper provides an overview of an upcoming book which seeks to do just this by asking the questions, what role does Russia play in the Central and Eastern Europe (CEE) energy sector and how did the Russian-CEE energy relationship develop since the early 1990s? One of the central thesis outlined here argues that in order to fully understand Russian involvement in the regional CEE energy complex, the RussianCEE energy relationship should be analysed in the context of the political and economic transition that both Russia and the CEE states underwent following 1989. It is asserted that questions on which energy security analysis normally centerāsuch as a countryās energy mix, its transport system, and energy vulnerabilitiesāhave to be considered along with questions related to the post-communist transformation, interactions between emerging post-socialist elites in Russia and the CEE region, as well as general governance structures
Thermal Control Characteristics of a Diffuse Bladed, Specular Base Louver System Status Report, Jul. - Dec. 1967
Heat transfer, and thermal control characteristics of diffuse bladed louver system for spacecraf
Identifying multiple detachment horizons and an evolving thrust history through cross-section restoration and appraisal in the Moine Thrust Belt, NW Scotland
Peer reviewedPublisher PD
Marked expansion of exocrine and endocrine pancreas with incretin therapy in humans with increased exocrine pancreas dysplasia and the potential for glucagon-producing neuroendocrine tumors.
Controversy exists regarding the potential regenerative influences of incretin therapy on pancreatic Ī²-cells versus possible adverse pancreatic proliferative effects. Examination of pancreata from age-matched organ donors with type 2 diabetes mellitus (DM) treated by incretin therapy (n = 8) or other therapy (n = 12) and nondiabetic control subjects (n = 14) reveals an ā¼40% increased pancreatic mass in DM treated with incretin therapy, with both increased exocrine cell proliferation (P < 0.0001) and dysplasia (increased pancreatic intraepithelial neoplasia, P < 0.01). Pancreata in DM treated with incretin therapy were notable for Ī±-cell hyperplasia and glucagon-expressing microadenomas (3 of 8) and a neuroendocrine tumor. Ī²-Cell mass was reduced by ā¼60% in those with DM, yet a sixfold increase was observed in incretin-treated subjects, although DM persisted. Endocrine cells costaining for insulin and glucagon were increased in DM compared with non-DM control subjects (P < 0.05) and markedly further increased by incretin therapy (P < 0.05). In conclusion, incretin therapy in humans resulted in a marked expansion of the exocrine and endocrine pancreatic compartments, the former being accompanied by increased proliferation and dysplasia and the latter by Ī±-cell hyperplasia with the potential for evolution into neuroendocrine tumors
Thermal control characteristics of a diffuse bladed specular base louver system Final report
Diffuse bladed specular base louver system for spacecraft temperature contro
Influence of structural position on fracture networks in the Torridon Group, Achnashellach fold and thrust belt, NW Scotland
Acknowledgements This research is funded by a NERC CASE studentship (NERC code NE/I018166/1) in partnership with Midland Valley. The authors thank Midland Valley for use of FieldMove Clino software for fracture data collection, and Move software for cross section construction, and strain modelling. 3D Field software is acknowledged for contour map creation. We also thank Toru Takeshita for overseeing the editorial process, and Catherine Hanks and Ole Petter Wennberg for constructive reviews.Peer reviewedPublisher PD
Analysis of heating rates and forces on bodies subject to rocket exhaust plume impingement
Computer programs and engineering methods for calculating heating rates and forces in jet plume impingement problem
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