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Sample records for cssx unit mcu

  1. MODULAR CAUSTIC SIDE SOLVENT EXTRACTION UNIT (MCU) GAMMA MONITORS SYSTEM FINAL REPORT

    Energy Technology Data Exchange (ETDEWEB)

    Casella, V

    2005-12-15

    The Department of Energy (DOE) selected Caustic-Side Solvent Extraction (CSSX) as the preferred technology for the removal of radioactive cesium from High-Level Waste (HLW) at the Savannah River Site (SRS). Before the full-scale Salt Waste Processing Facility (SWPF) becomes operational, the Closure Business Unit (CBU) plans to process a portion of dissolved saltcake waste through a Modular CSSX Unit (MCU). This work was derived from Technical Task Request SP-TTR-2004-00013, ''Gamma Monitor for MCU''. The deliverables for this task are the hardware and software for the gamma monitors and a report summarizing the testing and acceptance of this equipment for use in the MCU. Gamma-ray monitors are required to: (1) Measure the Cs-137 concentration in the decontaminated salt solution before entering the DSS (Decontaminated Salt Solution) Hold Tank, (2) Measure the Cs-137 concentration in the strip effluent before entering the Strip Effluent Hold Tank, (3) Verify proper operation of the solvent extraction system by verifying material balance within the process (The DSS Hold Tank Cs-137 concentration will be very low and the Cs-137 concentration in the Strip Effluent Hold Tank will be fifteen times higher than the Cs-137 concentration in the Feed Tank.) Sodium iodide monitors are used to measure the Cs-137 concentration in the piping before the DSS Hold tank, while GM monitors are used for Cs-137 measurements before the Strip Effluent Hold Tank. Tungsten shields were designed using Monte Carlo calculations and fabricated to reduce the process background radiation at the detector positions. These monitors were calibrated with NIST traceable standards that were specially made to be the same as the piping being monitored. Since this gamma ray monitoring system is unique, specially designed software was written and acceptance tested by Savannah River National Laboratory personnel. The software is a LabView-based application that serves as a unified

  2. 1/6TH SCALE STRIP EFFLUENT FEED TANK-MIXING RESULTS USING MCU SOLVENT

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    Hansen, E

    2006-02-01

    The purpose of this task was to determine if mixing was an issue for the entrainment and dispersion of the Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) solvent in the Defense Waste Processing Facility (DWPF) Strip Effluent Feed Tank (SEFT). The MCU strip effluent stream containing the Cs removed during salt processing will be transferred to the DWPF for immobilization in HLW glass. In lab-scale DWPF chemical process cell testing, mixing of the solvent in the dilute nitric acid solution proved problematic, and the Savannah River National Laboratory (SRNL) was requested to perform scaled SEFT mixing tests to evaluate whether the problem was symptomatic of the lab-scale set-up or of the solvent. The solvent levels tested were 228 and 235 ppm, which represented levels near the estimated DWPF solvent limit of 239 ppm in 0.001M HNO{sub 3} solution. The 239 ppm limit was calculated by Norato in X-CLC-S-00141. The general approach for the mixing investigation was to: (1) Investigate the use of fluorescent dyes to aid in observing the mixing behavior. Evaluate and compare the physical properties of the fluorescent dyed MCU solvents to the baseline Oak Ridge CSSX solvent. Based on the data, use the dyed MCU solvent that best approximates the physical properties. (2) Use approximately a 1/6th linear scale of the SEFT to replicate the internal configuration for DWPF mixing. (3) Determine agitator speed(s) for scaled testing based on the DWPF SEFT mixing speed. (4) Perform mixing tests using the 1/6th SEFT and determine any mixing issues (entrainment/dispersion, accumulation, adhesion) through visual observations and by pulling samples to assess uniformity. The mixing tests used MCU solvent fabricated at SRNL blended with Risk Reactor DFSB-K43 fluorescent dye. This dyed SRNL MCU solvent had equivalent physical properties important to mixing as compared to the Oak Ridge baseline solvent, blended easily with the MCU solvent, and provided an excellent visual aid.

  3. Sludge Batch 4 Simulant Flowsheet Studies with ARP and MCU: Impact of MCU Organics

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    Baich, M. A.; Herman, C. C.; Eibling, R. E.; Williams, M. F.; Smith, F. G.

    2005-07-01

    Two facilities for treating the salt currently being stored in the High Level Waste (HLW) tanks are currently planned to begin operations during the processing of Sludge Batch 4 (SB4). The Immobilization Technology Section (ITS) of the Savannah River National Laboratory (SRNL) was requested by the Defense Waste Processing Facility (DWPF) via Technical Task Request (TTR) HLW/DWPF/TTR-2004-0031 (Washburn, 2004) to evaluate the impacts on DWPF processing for streams from the Actinide Removal Process (ARP) and the Modular Caustic Side Solvent Side Extraction (CSSX) Unit (MCU). In particular, the TTR requests SRNL to validate the existing process flowsheet and establish a coupled operations flowsheet for use with SB4. The flowsheet runs are required so an evaluation of potential chemical processing issues, quantification of the potential hydrogen generation rates, and estimation of the required acid stoichiometry can be made. Previous testing (Baich et. al., 2003) was performed for incorporating ARP/MST in Sludge Batch 3 (SB3) and recommendations were made to DWPF on possible flowsheet options. However, since that time, some changes have occurred to the ARP facility processing strategy, and material balances have been revised (Subosits, 2004). Thus, testing with updated compositions was necessary. Since the MCU is a new design and project, no CPC flowsheet studies have been performed for this stream. This testing will validate the previously recommended ARP stream addition methods based on the new information and based on the need to also incorporate the MCU stream. The basic principle of solvent extraction is to use a sparingly soluble diluent material that carries an extractant that will complex with the cesium ions in the caustic HLW solution. The decontaminated aqueous stream (raffinate) is then sent to Saltstone for disposal. The cesium contained in the organic phase (solvent) can then be stripped into an aqueous phase ready for transfer to the DWPF. The solvent is

  4. SOLVENT HOLD TANK SAMPLE RESULTS FOR MCU-12-488, MCU-12-489, MCU-12-490, MCU-12-491, MCU-12-492 AND MCU-12-493: QUARTERLY SAMPLE FROM OCTOBER 2012

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    Fondeur, F. F.; Peters, T. B.; Fink, S. D.

    2013-01-16

    Savannah River National Laboratory (SRNL) analyzed solvent samples from Modular Caustic-Side Solvent Extraction Unit (MCU) in support of continuing operations. A quarterly analysis of the solvent is required to maintain solvent composition within specifications. Analytical results of the analyses of Solvent Hold Tank (SHT) samples MCU-12-488, MCU-12-489, MCU-12-490, MCU-12-491, MCU-12-492 and MCU-12-493 received 24 October 2012 are reported. The results show that the solvent at MCU does not require an Isopar® L addition, but it will require addition of trioctylamine. SRNL also analyzed the SHT sample for {sup 137}Cs content and determined the measured value is within tolerance but is trending upward compared to the {sup 137}Cs measurement made last year.

  5. Characterization of Solids Deposited on the Modular Caustic-Side Solvent Extraction Unit (MCU) Strip Effluent (SE) Coalescer Media Removed in April 2015

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    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-06-13

    On June 2015, Savannah River National Laboratory (SRNL) received a Strip Effluent (SE) coalescer (FLT-304) from MCU. That coalescer was first installed at MCU in late October 2014 and removed in April 2015. While processing approximately 48,700 gallons of strip solution, the pressure drop steadily increased linearly from 1 psi to near 16 psi (the administrative limit is 17 psi) with the total filtrate volume (2.1E-4 psi/gal of filtrate). The linear behavior is due to the combined effect of a constant deposition of material that starts from the closed-end to the mid-section of the coalescer reducing the available surface area of the coalescer for fluid passage (linearly with filtrate volume) and the formation of a secondary emulsion (water in NG-CSSX) on the fibers of the coalescer media. Both effects reduced the coalescer porosity by at least 13% (after processing 48,700 gallons). Before the coalescer was removed, it was flushed with a 10 mM boric acid solution to reduce the dose level. To determine the nature of the deposited material, a physical and chemical analysis of the coalescer was conducted. Characterization of this coalescer revealed the adsorption of organic containing amines (secondary amides and primary amines), TiDG, degraded modifier (with no hydroxyl group), MaxCalix, and oxidized hydrocarbon (possibly from Isopar™L or from lubricant used at MCU) onto the coalescer media. The amide and amines are possibly from the decomposition of the suppressor (TiDG). The modifier and MaxCalix were the largest components of the deposited organic material, as determined from leaching the coalescer with dichloromethane. Both the Fourier-Transformed Infrared (FTIR) and Fourier-Transformed Hydrogen Nuclear Magnetic Resonance (FT-HNMR) results indicated that some of the modifier was degraded (missing their OH groups). The modifier was observed everywhere in the examined coalescer pieces (FTIR), while the TiDG and its decomposition products were observed at the

  6. V5 AND V10 CONTACTOR TESTING WITH THE NEXT GENERATION (CSSX) SOLVENT FOR THE SAVANNAH RIVER SITE INTEGRATED SALT DISPOSITION PROCESS

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    Restivo, M.; Peters, T.; Pierce, R.; Fondeur, F.; Steeper, T.; Williams, M.; Giddings, B.; Hickman, B.; Fink, S.

    2012-01-17

    A solvent extraction system for removal of cesium (Cs) from alkaline solutions was developed utilizing a novel solvent invented at the Oak Ridge National Laboratory (ORNL). This solvent consists of a calix[4]arene-crown-6 extractant dissolved in an inert hydrocarbon matrix. A Modifier is added to the solvent to enhance the extraction power of the calixarene and to prevent the formation of a third phase. An additional additive, called a suppressor, is used to improve stripping performance. The process that deploys this solvent system is known as Caustic Side Solvent Extraction (CSSX). The solvent system has been deployed at the Savannah River Site (SRS) in the Modular CSSX Unit (MCU) since 2008. Subsequent development efforts by ORNL identified an improved solvent system that can raise the expected decontamination factor (DF) in MCU from {approx}200 to more than 40,000. The improved DF is attributed to an improved distribution ratio for cesium [D(Cs)] in extraction from {approx}15 to {approx}60, an increased solubility of the calixarene in the solvent from 0.007 M to >0.050 M, and use of boric acid (H{sub 3}BO{sub 3}) stripping that also yields improved D(Cs) values. Additionally, the changes incorporated into the Next Generation CSSX Solvent (NGS) are intended to reduce solvent entrainment by virtue of more favorable physical properties. The MCU and Salt Waste Processing Facility (SWPF) facilities are actively pursuing the changeover from the current CSSX solvent to the NGS solvent. To support this integration of the NGS into the MCU and SWPF facilities, the Savannah River Remediation (SRR)/ARP/MCU Life Extension Project requested that the Savannah River National Laboratory (SRNL) perform testing of the new solvent for the removal of Cs from the liquid salt waste stream. Additionally, SRNL was tasked with characterizing both strip (20-in long, 10 micron pore size) and extraction (40-in long, 20 micron pore size) coalescers. SRNL designed a pilot-scale experimental

  7. V5 AND V10 CONTACTOR TESTING WITH THE NEXT GENERATION (CSSX) SOLVENT FOR THE SAVANNAH RIVER SITE INTEGRATED SALT DISPOSITION PROCESS

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    Restivo, M.; Peters, T.; Pierce, R.; Fondeur, F.; Steeper, T.; Williams, M.; Giddings, B.; Hickman, B.; Fink, S.

    2012-01-17

    A solvent extraction system for removal of cesium (Cs) from alkaline solutions was developed utilizing a novel solvent invented at the Oak Ridge National Laboratory (ORNL). This solvent consists of a calix[4]arene-crown-6 extractant dissolved in an inert hydrocarbon matrix. A Modifier is added to the solvent to enhance the extraction power of the calixarene and to prevent the formation of a third phase. An additional additive, called a suppressor, is used to improve stripping performance. The process that deploys this solvent system is known as Caustic Side Solvent Extraction (CSSX). The solvent system has been deployed at the Savannah River Site (SRS) in the Modular CSSX Unit (MCU) since 2008. Subsequent development efforts by ORNL identified an improved solvent system that can raise the expected decontamination factor (DF) in MCU from {approx}200 to more than 40,000. The improved DF is attributed to an improved distribution ratio for cesium [D(Cs)] in extraction from {approx}15 to {approx}60, an increased solubility of the calixarene in the solvent from 0.007 M to >0.050 M, and use of boric acid (H{sub 3}BO{sub 3}) stripping that also yields improved D(Cs) values. Additionally, the changes incorporated into the Next Generation CSSX Solvent (NGS) are intended to reduce solvent entrainment by virtue of more favorable physical properties. The MCU and Salt Waste Processing Facility (SWPF) facilities are actively pursuing the changeover from the current CSSX solvent to the NGS solvent. To support this integration of the NGS into the MCU and SWPF facilities, the Savannah River Remediation (SRR)/ARP/MCU Life Extension Project requested that the Savannah River National Laboratory (SRNL) perform testing of the new solvent for the removal of Cs from the liquid salt waste stream. Additionally, SRNL was tasked with characterizing both strip (20-in long, 10 micron pore size) and extraction (40-in long, 20 micron pore size) coalescers. SRNL designed a pilot-scale experimental

  8. Miscibility Evaluation Of The Next Generation Solvent With Polymers Currently Used At DWPF, MCU, And Saltstone

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    Fondeur, F. F.

    2013-04-17

    The Office of Waste Processing, within the Office of Technology Innovation and Development, funded the development of an enhanced Caustic-Side Solvent Extraction (CSSX) solvent for deployment at the Savannah River Site for removal of cesium from High Level Waste. This effort lead to the development of the Next Generation Solvent (NGS) with Tris (3,7-dimethyl octyl) guanidine (TiDG). The first deployment target for the NGS solvent is within the Modular CSSX Unit (MCU). Deployment of a new chemical within an existing facility requires verification that the new chemical components are compatible with the installed equipment. In the instance of a new organic solvent, the primary focus is on compatibility of the solvent with organic polymers used in the affected facility. This report provides the calculated data from exposing these polymers to the Next Generation Solvent. An assessment of the dimensional stability of polymers known to be used or present in the MCU, Defense Waste Processing Facility (DWPF), and Saltstone facilities that will be exposed to the NGS showed that TiDG could selectively affect the elastomers and some thermoplastics to varying extents, but the typical use of these polymers in a confined geometry will likely prevent the NGS from impacting component performance. The polymers identified as of primary concern include Grafoil® (flexible graphite), Tefzel®, Isolast®, ethylene-propylene-diene monomer (EPDM) rubber, nitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), ultra high molecular weight polyethylene (UHMWPE), and fluorocarbon rubber (FKM). Certain polymers like NBR and EPDM were found to interact mildly with NGS but their calculated swelling and the confined geometry will impede interaction with NGS. In addition, it was found that Vellumoid (cellulose fibers-reinforced glycerin and protein) may leach protein and Polyvinyl Chloride (PVC) may leach plasticizer (such as Bis-Ethylhexyl-Phthalates) into the NGS solvent. Either case

  9. SUPPLEMENTAL ANALYSES FOR SOLVENT HOLD TANK SAMPLES MCU-11-314, MCU-11-315, MCU-11-316, MCU-11-317, MCU-11-318 AND MCU-11-319

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    Peters, T.; Washington, A; . Fondeur, F.; Fink, S.

    2011-09-29

    Savannah River National Laboratory (SRNL) periodically analyses solvent samples from Modular Caustic-Side Solvent Extraction Unit (MCU) in support of continuing operations. A quarterly analysis of the solvent is required to maintain solvent composition within specifications. Analytical results of the analyses of Solvent Hold Tank (SHT) samples MCU-11-314, MCU-11-315, MCU-11-316, MCU-11-317, MCU-11-318 and MCU-11-319 have been previously reported. MCU has experienced a modest decline in cesium removal efficiency while processing the current feed, 'Macrobatch 3'. While the target decontamination factor (DF) is 200, the fiscal year 2011 DF average is 161. The results of the prior solvent analysis report did not identify a specific factor that would correlate with the poor cesium decontamination beyond a low concentration of the suppressor, trioctylamine. New analyses of the quarterly sample are reported in this document, as well as a cross-check of {sup 137}Cs measurements for SRNL and F/H lab. Furthermore, in an attempt to discover the reason for the decline in DF at MCU, SRNL was tasked with analyzing numerous Caustic Wash Tank (CWT) and chemical feed samples.

  10. MODULAR CAUSTIC SIDE SOLVENT EXTRACTION UNIT GAMMA MONITORS SYSTEM FINAL REPORT

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    Casella, V

    2007-06-25

    The Department of Energy (DOE) selected Caustic-Side Solvent Extraction (CSSX) as the preferred technology for the removal of radioactive cesium from High-Level Waste (HLW) at the Savannah River Site (SRS). Before the full-scale Salt Waste Processing Facility (SWPF) becomes operational, the liquid Waste Organization (LWO) plans to process a portion of dissolved saltcake waste through a Modular CSSX Unit (MCU). This work was derived from Technical Task Request SP-TTR-2004-00013, ''Gamma Monitor for MCU.'' The deliverables for this task are the hardware and software for the gamma monitors and a report summarizing the testing and acceptance of this equipment for use in the MCU. Revision of this report is a deliverable in Technical Task Report SP-TTR-2006-00010, ''NaI Shield Box Testing.'' Gamma-ray monitors were developed to: {lg_bullet} Measure the Cs-137 concentration in the decontaminated salt solution before entering the DSS (Decontaminated Salt Solution) Hold Tank, {lg_bullet} Measure the Cs-137 concentration in the strip effluent before entering the Strip Effluent Hold Tank, {lg_bullet} Verify proper operation of the solvent extraction system by verifying material balance within the process (The DSS Hold Tank Cs-137 concentration will be very low and the Cs-137 concentration in the Strip Effluent Hold Tank will be approximately fifteen times higher than the Cs-137 concentration in the Feed Tank.)

  11. Characterization of solids deposited on the modular caustic-side solvent extraction unit (MCU) coalescer media removed in October 2014

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    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-03-01

    In February 2015, Savannah River National Laboratory (SRNL) received a Strip Effluent (SE) coalescer (FLT-304) from MCU. That coalescer was first installed at MCU in July 2014 and removed in October 2014. While processing approximately 31,400 gallons of strip solution, the pressure drop steadily increased from 1 psi to beyond the administrative limit of 20 psi. The physical and chemical analysis was conducted on this coalescer to determine the mechanism that led to the plugging of this coalescer. Characterization of this coalescer revealed the adsorption of organic containing amines as well as MCU modifier. The amines are probably from the decomposition of the suppressor (TiDG) as well as from bacteria. This adsorption may have changed the surface energetics (characteristics) of the coalescer fibers and therefore, their wetting behavior. A very small amount of inorganic solids were found to have deposited on this coalescer (possibly an artifact of cleaning the coalescer with Boric acid. However, we believe that inorganic precipitation, as has been seen in the past, did not play a role in the high pressure drop rise of this coalescer. With regards to the current practice of reducing the radioactive content of the SE coalescer, it is recommended that future SE coalescer should be flushed with 10 mM boric acid which is currently used at MCU. Plugging of the SE coalescer was most likely due to the formation and accumulation of a water-in-oil emulsion that reduced the overall porosity of the coalescer. There is also evidence that a bimodal oil particle distribution may have entered and deposited in the coalescer and caused the initial increase in pressure drop.

  12. Characterization of solids deposited on the modular caustic-side solvent extraction unit (MCU) coalescer media removed in May and October 2014

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    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-10-01

    During routine maintenance, the coalescers utilized in the Modular Caustic-Side Solvent Extraction Unit (MCU) processing of Salt Batch 6 and a portion of Salt Batch 7 were sampled and submitted to the Savannah River National Laboratory (SRNL) for characterization, for the purpose of identifying solid phase constituents that may be accumulating in these coalescers. Specifically, two samples were received and characterized: A decontaminated salt solution (DSS) coalescer sample and a strip effluent (SE) coalescer sample. Aliquots of the samples were analyzed by XRD, Fourier Transform Infrared (FTIR) Spectroscopy, SEM, and EDS. Other aliquots of the samples were leached in acid solution, and the leachates were analyzed by ICP-AES. In addition, modeling was performed to provide a basis for comparison of the analytical results.

  13. DETERMINATION OF LIQUID FILM THICKNESS FOLLOWING DRAINING OF CONTACTORS, VESSELS, AND PIPES IN THE MCU PROCESS

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    Poirier, M; Fernando Fondeur, F; Samuel Fink, S

    2006-06-06

    The Department of Energy (DOE) identified the caustic side solvent extraction (CSSX) process as the preferred technology to remove cesium from radioactive waste solutions at the Savannah River Site (SRS). As a result, Washington Savannah River Company (WSRC) began designing and building a Modular CSSX Unit (MCU) in the SRS tank farm to process liquid waste for an interim period until the Salt Waste Processing Facility (SWPF) begins operations. Both the solvent and the strip effluent streams could contain high concentrations of cesium which must be removed from the contactors, process tanks, and piping prior to performing contactor maintenance. When these vessels are drained, thin films or drops will remain on the equipment walls. Following draining, the vessels will be flushed with water and drained to remove the flush water. The draining reduces the cesium concentration in the vessels by reducing the volume of cesium-containing material. The flushing, and subsequent draining, reduces the cesium in the vessels by diluting the cesium that remains in the film or drops on the vessel walls. MCU personnel requested that Savannah River National Laboratory (SRNL) researchers conduct a literature search to identify models to calculate the thickness of the liquid films remaining in the contactors, process tanks, and piping following draining of salt solution, solvent, and strip solution. The conclusions from this work are: (1) The predicted film thickness of the strip effluent is 0.010 mm on vertical walls, 0.57 mm on horizontal walls and 0.081 mm in horizontal pipes. (2) The predicted film thickness of the salt solution is 0.015 mm on vertical walls, 0.74 mm on horizontal walls, and 0.106 mm in horizontal pipes. (3) The predicted film thickness of the solvent is 0.022 mm on vertical walls, 0.91 mm on horizontal walls, and 0.13 mm in horizontal pipes. (4) The calculated film volume following draining is: (a) Salt solution receipt tank--1.6 gallons; (b) Salt solution feed

  14. SOLVENT HOLD TANK SAMPLE RESULTS FOR MCU-13-189, MCU-13-190, AND MCU-13-191: QUARTERLY SAMPLE FROM SEPTEMBER 2013

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    Fondeur, F.; Taylor-Pashow, K.

    2013-10-31

    Savannah River National Laboratory (SRNL) analyzed solvent samples from Modular Caustic-Side Solvent Extraction Unit (MCU) in support of continuing operations. A quarterly analysis of the solvent is required to maintain solvent composition within specifications. Analytical results of the analyses of Solvent Hold Tank (SHT) samples MCU-13-189, MCU-13-190, and MCU-13-191 received on September 4, 2013 are reported. The results show that the solvent (remaining heel in the SHT tank) at MCU contains excess Isopar L and a deficit concentration of modifier and trioctylamine when compared to the standard MCU solvent. As with the previous solvent sample results, these analyses indicate that the solvent does not require Isopar L trimming at this time. Since MCU is switching to NGS, there is no need to add TOA nor modifier. SRNL also analyzed the SHT sample for {{sup 137}Cs content and determined the measured value is within tolerance and the value has returned to levels observed in 2011.

  15. RESULTS FROM ANALYSIS OF THE FIRST AND SECOND STRIP EFFLUENT COALESCER ELEMENTS FROM RADIOACTIVE OPERATIONS OF THE MODULAR CAUSTIC-SIDE SOLVENT EXTRACTION UNIT

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    Peters, T.; Fondeur, F.; Fink, S.

    2011-06-28

    The coalescer elements for the Strip Effluent (SE) acid within the Modular Caustic-Side Solvent Extraction Unit (MCU) experienced elevated differential pressure drop during radioactive operations. Following the end of operations for the first Macrobatch campaign and soon after start of the second Macrobatch campaign, personnel removed the coalescer media and provided to Savannah River National Laboratory (SRNL) for diagnostic investigation of the causes of reduced flow. This report summarizes those studies. Two Strip Effluent (SE) coalescers were delivered to the Savannah River National Laboratory (SRNL). One was removed from the Modular Caustic-Side Solvent Extraction Unit (MCU) between processing of Macrobatch 1 and 2 (coalescer 'Alpha'), and the second was removed from MCU after processing of {approx}24,000 gallons of salt solution (coalescer 'Beta'). Both coalescers underwent the same general strip acid flush program to reduce the dose and were delivered to SRNL for analysis of potential occluding solids. Analysis of Coalescer Alpha indicates the presence of aluminum hydroxide solids and aluminosilicate solids, while analysis of Coalescer Beta indicates the presence of aluminum hydroxide solids, but no aluminosilicates. Leaching studies on sections of both coalescers were performed. The results indicate that the coalescers had different amounts of solids present on them at the time of removal. Finally, samples of free liquids retrieved from both coalescers indicate no excessive amounts of CSSX solvent present. Given the strip acid flushing that occurred in the SE coalescers, the solids we detected on the coalescers are probably indicative of a larger quantity of these solids present before the strip acid flushing. Under this scenario, the excessive pressure drops are due to the solids and not from organic fouling.

  16. THE IMPACT OF THE MCU LIFE EXTENSION SOLVENT ON DWPF GLASS FORMULATION EFFORTS

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    Peeler, D; Edwards, T

    2011-03-24

    As a part of the Actinide Removal Process (ARP)/Modular Caustic Side Solvent Extraction Unit (MCU) Life Extension Project, a next generation solvent (NG-CSSX), a new strip acid, and modified monosodium titanate (mMST) will be deployed. The strip acid will be changed from dilute nitric acid to dilute boric acid (0.01 M). Because of these changes, experimental testing with the next generation solvent and mMST is required to determine the impact of these changes in 512-S operations as well as Chemical Process Cell (CPC), Defense Waste Processing Facility (DWPF) glass formulation activities, and melter operations at DWPF. To support programmatic objectives, the downstream impacts of the boric acid strip effluent (SE) to the glass formulation activities and melter operations are considered in this study. More specifically, the impacts of boric acid additions to the projected SB7b operating windows, potential impacts to frit production temperatures, and the potential impact of boron volatility are evaluated. Although various boric acid molarities have been reported and discussed, the baseline flowsheet used to support this assessment was 0.01M boric acid. The results of the paper study assessment indicate that Frit 418 and Frit 418-7D are robust to the implementation of the 0.01M boric acid SE into the SB7b flowsheet (sludge-only or ARP-added). More specifically, the projected operating windows for the nominal SB7b projections remain essentially constant (i.e., 25-43 or 25-44% waste loading (WL)) regardless of the flowsheet options (sludge-only, ARP added, and/or the presence of the new SE). These results indicate that even if SE is not transferred to the Sludge Receipt and Adjustment Tank (SRAT), there would be no need to add boric acid (from a trim tank) to compositionally compensate for the absence of the boric acid SE in either a sludge-only or ARP-added SB7b flowsheet. With respect to boron volatility, the Measurement Acceptability Region (MAR) assessments also

  17. Analysis of an MCU HEPA filter

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    Peters, T. B. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-01-01

    A series of direct analyses on three portions (inlet, center, and outlet) of the High Efficiency Particulate Air (HEPA) filter material from the Modular Caustic-Side Solvent Extraction Unit (MCU) have been performed; this includes x-ray methods such as X-Ray Diffraction (XRD), Contained Scanning Electron Microscopy (CSEM) and X-Ray Fluorescence (XRF), as well as Fourier Transform InfraRed spectroscopy (FTIR). Additionally, two leaching studies (one with water, one with dichloromethane) have been performed on three portions (inlet, center, and outlet) of the HEPA filter material, with the leachates being analyzed by Inductively-coupled plasma emission spectroscopy (ICPES), Semi-Volatile Organic Analysis (SVOA) and gammascan. From the results of the analyses, SRNL feels that cesium-depleted solvent is being introduced into the HEPA filter. The most likely avenue for this is mechanical aerosolization of solvent, where the aerosol is then carried along an airstream into the HEPA filter. Once introduced into the HEPA filter media, the solvent wicks throughout the material, and migrates towards the outlet end. Once on the outlet end, continual drying could cause particulate flakes to exit the filter and travel farther down the airstream path.

  18. NEXT GENERATION SOLVENT-MATERIALS COMPATIBILITY WITH POLYMER COMPONENTS WITHIN MODULAR CAUSTIC-SIDE SOLVENT EXTRACTION UNIT (FINAL REPORT)

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    Fondeur, F.; Peters, T.; Fink, S.

    2012-01-17

    The Office of Waste Processing, within the Office of Technology Innovation and Development, is funding the development of an enhanced solvent for deployment at the Savannah River Site for removal of cesium from High Level Waste. The technical effort is collaboration between Oak Ridge National Laboratory (ORNL), Savannah River National Laboratory (SRNL), and Argonne National Laboratory. The first deployment target for the technology is within the Modular Caustic-Side Solvent Extraction Unit (MCU). Deployment of a new chemical within an existing facility requires verification that the chemical components are compatible with the installed equipment. In the instance of a new organic solvent, the primary focus is on compatibility of the solvent with organic polymers used in the facility. This report provides the data from exposing these polymers to the Next Generation Solvent (NGS). The test was conducted over six months. An assessment of the dimensional stability of polymers present in MCU (i.e., PEEK, Grafoil, Tefzel and Isolast) in the modified NGS (where the concentration of LIX{reg_sign}79 and MaxCalix was varied systematically) showed that LIX{reg_sign}79 selectively affected Tefzel and its different grades (by an increase in size and lowering its density). The copolymer structure of Tefzel and possibly its porosity allows for the easier diffusion of LIX{reg_sign}79. Tefzel is used as the seat material in some of the valves at MCU. Long term exposure to LIX{reg_sign}79, may make the valves hard to operate over time due to the seat material (Tefzel) increasing in size. However, since the physical changes of Tefzel in the improved solvent are comparable to the changes in the CSSX baseline solvent, no design changes are needed with respect to the Tefzel seating material. PEEK, Grafoil and Isolast were not affected by LIX{reg_sign}79 and MaxCalix within six months of exposure. The initial rapid weight gain observed in every polymer is assigned to the finite and

  19. Solvent Hold Tank Sample Results for MCU-16-991-992-993: July 2016 Monthly sample and MCU-16-1033-1034-1035: July 2016 Superwashed Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-11-25

    SRNL received one set of SHT samples (MCU-16-991, MCU-16-992 and MCU-16-993), pulled on 07/13/2016 and another set of SHT samples (MCU-16-1033, MCU-16-1034, and MCU-16-1035) that were pulled on 07/24/2016 after the solvent was superwashed with 300 mM sodium hydroxide for analysis. Samples MCU-16-991, MCU-16-992, and MCU-16-993 were combined into one sample (MCU-16-991-992-993) and samples MCU-16-1033, MCU-16-1034, and MCU-16-1035 were combined into one sample (MCU-16-1033-1034-1035). Of the two composite samples MCU-16-1033-1034-1035 represents the current chemical state of the solvent at MCU. All analytical conclusions are based on the chemical analysis of MCU-16-1033-1034-1035. There were no chemical differences between MCU-16- 991-992-993 and superwashed MCU-16-1033-1034-1035.

  20. Results of Hg speciation testing on MCU strip effluent hold tank (SEHT) and decontaminated salt solution hold tank (DSSHT) materials

    Energy Technology Data Exchange (ETDEWEB)

    Bannochie, C. J. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-09-17

    The Savannah River National Laboratory (SRNL) was tasked with preparing and shipping samples for Hg speciation by Eurofins Frontier Global Sciences, Inc. in Seattle, WA on behalf of the Savannah River Remediation (SRR) Mercury Task Team.i,ii The tenth shipment of samples was designated to include Modular Caustic Side Solvent Extraction Unit (MCU) Strip Effluent Hold Tank (SEHT) and MCU Decontaminated Salt Solution Hold Tank (DSSHT) materials from processing Salt Batch 7b. The MCU SEHT (MCU-15-722) and DSSHT (MCU-15-709) samples were pulled on June 15, 2015. All MCU samples were received at SRNL on June 16, 2015. The DSSHT sample was moved the same day to refrigeration, while the SEHT sample was placed in the Shielded Cells. On July 9, 2015 it was opened and an aliquot diluted 1:100 with Eurofins deionized water and a portion of the diluted sample transferred to a Teflon® bottle prior to moving it to refrigeration that same day. All samples were kept in the dark and refrigerated until final dilutions were prepared for shipment to Eurofins.

  1. DWPF FLOWSHEET STUDIES WITH SIMULANTS TO DETERMINE MCU SOLVENT BUILD-UP IN CONTINOUS RUNS

    Energy Technology Data Exchange (ETDEWEB)

    Lambert, D; Frances Williams, F; S Crump, S; Russell Eibling, R; Thomas02 White, T; David Best, D

    2006-05-25

    The Actinide Removal Process (ARP) facility and the Modular Caustic Side Solvent Extraction Unit (MCU) are scheduled to begin processing salt waste in fiscal year 2007. A portion of the streams generated in these salt processing facilities will be transferred to the Defense Waste Processing Facility (DWPF) to be incorporated in the glass matrix. Before the streams are introduced, a combination of impact analyses and research and development studies must be performed to quantify the impacts on DWPF processing. The Process Science & Engineering (PS&E) section of the Savannah River National Laboratory (SRNL) was requested via Technical Task Request (TTR) HLW/DWPF/TTR-2004-0031 to evaluate the impacts on DWPF processing. Simulant Chemical Process Cell (CPC) flowsheet studies have been performed using previous composition and projected volume estimates for the ARP sludge/monosodium titanate (MST) stream. Initial MCU incorporation testing for the DWPF flowsheet indicated unacceptable levels of Isopar{reg_sign}L were collecting in the Sludge Receipt and Adjustment Tank (SRAT) condenser system and unanticipated quantities of modifier were carrying over into the SRAT condenser system. This work was performed as part of Sludge Batch 4 (SB4) flowsheet testing and was reported by Baich et al. Due to changes in the flammability control strategy for DWPF for salt processing, the incorporation strategy for ARP changed and additional ARP flowsheet tests were necessary to validate the new processing strategy. The last round of ARP testing included the incorporation of the MCU stream and identified potential processing issues with the MCU solvent. The identified issues included the potential carry-over and accumulation of the MCU solvent components in the CPC condensers and in the recycle stream to the Tank Farm. Solvent retention in the DWPF condensers contradicts the DWPF solvent control strategy. Therefore, DWPF requested SRNL to perform additional MCU flowsheet studies to better

  2. ERp57 modulates mitochondrial calcium uptake through the MCU.

    Science.gov (United States)

    He, Jingquan; Shi, Weikang; Guo, Yu; Chai, Zhen

    2014-06-01

    ERp57 participates in the regulation of calcium homeostasis. Although ERp57 modulates calcium flux across the plasma membrane and the endoplasmic reticulum membrane, its functions on mitochondria are largely unknown. Here, we found that ERp57 can regulate the expression of the mitochondrial calcium uniporter (MCU) and modulate mitochondrial calcium uptake. In ERp57-silenced HeLa cells, MCU was downregulated, and the mitochondrial calcium uptake was inhibited, consistent with the effect of MCU knockdown. When MCU was re-expressed in the ERp57 knockdown cells, mitochondrial calcium uptake was restored. Thus, ERp57 is a potent regulator of mitochondrial calcium homeostasis.

  3. Sample Results from MCU Solids Outage

    Energy Technology Data Exchange (ETDEWEB)

    Peters, T.; Washington, A.; Oji, L.; Coleman, C.; Poirier, M.

    2014-09-22

    Savannah River National Laboratory (SRNL) has received several solid and liquid samples from MCU in an effort to understand and recover from the system outage starting on April 6, 2014. SRNL concludes that the presence of solids in the Salt Solution Feed Tank (SSFT) is the likely root cause for the outage, based upon the following discoveries: A solids sample from the extraction contactor #1 proved to be mostly sodium oxalate; A solids sample from the scrub contactor#1 proved to be mostly sodium oxalate; A solids sample from the Salt Solution Feed Tank (SSFT) proved to be mostly sodium oxalate; An archived sample from Tank 49H taken last year was shown to contain a fine precipitate of sodium oxalate; A solids sample from ; A liquid sample from the SSFT was shown to have elevated levels of oxalate anion compared to the expected concentration in the feed. Visual inspection of the SSFT indicated the presence of precipitated or transferred solids, which were likely also in the Salt Solution Receipt Tank (SSRT). The presence of the solids coupled with agitation performed to maintain feed temperature resulted in oxalate solids migration through the MCU system and caused hydraulic issues that resulted in unplanned phase carryover from the extraction into the scrub, and ultimately the strip contactors. Not only did this carryover result in the Strip Effluent (SE) being pushed out of waste acceptance specification, but it resulted in the deposition of solids into several of the contactors. At the same time, extensive deposits of aluminosilicates were found in the drain tube in the extraction contactor #1. However it is not known at this time how the aluminosilicate solids are related to the oxalate solids. The solids were successfully cleaned out of the MCU system. However, future consideration must be given to the exclusion of oxalate solids into the MCU system. There were 53 recommendations for improving operations recently identified. Some additional considerations or

  4. Solvent Hold Tank Sample Results for MCU-16-701-702-703: May 2016 Monthly Sample and MCU-16-710-711-712: May 2016 Superwashed Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-08-30

    The Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-701, MCU-16-702 and MCU-16-703), pulled on 05/23/2016 and another set of SHT samples (MCU-16-710, MCU-16-711, and MCU-16-712) were pulled on 05/28/2016 after the solvent was superwashed with 300 mM sodium hydroxide for analysis. Samples MCU-16-701, MCU-16-702, and MCU-16-703 were combined into one sample (MCU-16-701-702-703) and samples MCU-16-710, MCU- 16-711, and MCU-16-712 were combined into one sample (MCU-16-710-711-712). Of the two composite samples MCU-16-710-711-712 represents the current chemical state of the solvent at MCU. All analytical conclusions are based on the chemical analysis of MCU-16-710-711-712. There were no chemical differences between MCU-16-701-702-703 and superwashed MCU-16-710-711-712. Analysis of the composited sample MCU-16-710-712-713 indicated the Isopar™L concentration is above its nominal level (102%). The modifier (CS-7SB) is 16% below its nominal concentration while the TiDG and MaxCalix concentrations are at and above their nominal concentrations respectively. The TiDG level has begun to decrease and it is 7% below its nominal level as of May 28, 2016. Based on this current analysis, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended.

  5. Solvent Hold Tank Sample Results for MCU-16-701-702-703: May 2016 Monthly Sample and MCU-16-710-711-712: May 2016 Superwashed Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-08-30

    The Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-701, MCU-16-702 and MCU-16-703), pulled on 05/23/2016, and another set of SHT samples (MCU-16-710, MCU-16-711, and MCU-16-712) were pulled on 05/28/2016 after the solvent was superwashed with 300 mM sodium hydroxide for analysis. Samples MCU-16-701, MCU-16-702, and MCU-16-703 were combined into one sample (MCU-16-701-702-703) and samples MCU-16-710, MCU- 16-711, and MCU-16-712 were combined into one sample (MCU-16-710-711-712). Of the two composite samples MCU-16-710-711-712 represents the current chemical state of the solvent at MCU. All analytical conclusions are based on the chemical analysis of MCU-16-710-711-712. There were no chemical differences between MCU-16-701-702-703 and superwashed MCU-16-710-711-712. Analysis of the composited sample MCU-16-710-712-713 indicated the Isopar™L concentration is above its nominal level (102%). The modifier (CS-7SB) is 16% below its nominal concentration, while the TiDG and MaxCalix concentrations are at and above their nominal concentrations, respectively. The TiDG level has begun to decrease, and it is 7% below its nominal level as of May 28, 2016. Based on this current analysis, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended.

  6. Stability of the Caustic-Side Solvent Extraction (CSSX) Process Solvent: Effect of High Nitrite on Solvent Nitration

    Energy Technology Data Exchange (ETDEWEB)

    Bonnesen, P.V.

    2002-06-26

    The purpose of this investigation was to determine whether nitrated organic compounds could be formed during operation of the Caustic-Side Solvent Extraction (CSSX) process, and whether such compounds would present a safety concern. The CSSX process was developed to remove cesium from alkaline high-level salt waste stored at the US Department of Energy Savannah River Site (SRS). The solvent is composed of the cesium extractant calix[4]arene-bis-(4-tert-octylbenzo-crown-6) (BOBCalixC6), a fluorinated alcohol phase modifier, tri-n-octylamine (TOA), and an isoparaffinic diluent (Iospar{reg_sign}). During the CSSX process, the solvent is expected to be exposed to high concentrations of nitrate and nitrite dissolved in the alkaline waste feed. The solvent will also be exposed to dilute (50 mM) nitric acid solutions containing low concentrations of nitrite during scrubbing, followed by stripping with 1 mM nitric acid. The solvent is expected to last for one year of plant operation, and the temperatures the solvent may experience during the process could range from as low as 15 C to as high as 35 C. Excursions from standard process conditions could result in the solvent experiencing higher temperatures, as well as concentrations of nitrate, nitrite, and most importantly nitric acid, that exceed normal operating conditions. Accordingly, conditions may exist where nitration reactions involving the solvent components, possibly leading to other chemical reactions stemming from nitration reactions, could occur. To model such nitration reactions, the solvent was exposed to the types of nitrate- and nitrite-containing solutions that might be expected to be encountered during the process (even under off-normal conditions), as a function of time, temperature, and concentration of nitrate, nitrite, and nitric acid. The experiments conducted as part of this report were designed to examine the more specific effect that high nitrite concentrations could have on forming nitrated

  7. SOLIDS PRECIPITATION EVENT IN MCU CAUSAL ANALYSIS AND RECOMMENDATIONS FROM SOLIDS RECOVERY TEAM

    Energy Technology Data Exchange (ETDEWEB)

    Garrison, A.; Aponte, C.

    2014-08-15

    A process upset occurred in the Modular Caustic-Side Solvent Extraction Unit (MCU) facility on April 6th, 2014. During recovery efforts, a significant amount of solids were found in the Salt Solution Feed Tank (SSFT), Salt Solution Receipt Tanks (SSRTs), two extraction contactors, and scrub contactors. The solids were identified by Savannah River National Laboratory (SRNL) as primarily sodium oxalate and sodium alumina silicate (NAS) with the presence of some aluminum hydroxide. NAS solids have been present in the SSFT since simulant runs during cold chemical startup of MCU in 2007, and have not hindered operations since that time. During the process upset in April 2014, the oxalate solids partially blocked the aqueous outlet of the extraction contactors, causing salt solution to exit through the contactor organic outlet to the scrub contactors with the organic phase. This salt solution overwhelmed the scrub contactors and passed with the organic phase to the strip section of MCU. The partially reversed flow of salt solution resulted in a Strip Effluent (SE) stream that was high in Isopar™ L, pH and sodium. The primary cause of the excessive solids accumulation in the SSRTs and SSFT at MCU is attributed to an increase in the frequency of oxalic acid cleaning of the 512-S primary filter. Agitation in the SSRTs at MCU in response to cold weather likely provided the primary mechanism to transfer the solids to the contactors. Sources of the sodium oxalate solids are attributed to the oxalic acid cleaning solution used to clean the primary filter at the Actinide Removal Process (ARP) filtration at 512-S, as well as precipitation from the salt batch feed, which is at or near oxalate saturation. The Solids Recovery Team was formed to determine the cause of the solids formation and develop recommendations to prevent or mitigate this event in the future. A total of 53 recommendations were generated. These recommendations were organized into 4 focus areas: • Improve

  8. THE DLSTRIBOTED MCU MODEL FOR SYNCHRONOUS REAL-TIME TELETEACHING

    Institute of Scientific and Technical Information of China (English)

    刘均; 李人厚; 郑庆华

    2004-01-01

    Aiming at issues on multimedia communication in synchronous real-time teleteaching (SRT) systems over IP network, a 4-tuple structural mode of multimedia communication is proposed in the paper, and an SRT-oriented distributed MCU model is built according to the mode. Moreover, the mechanism of multicast communication across subnets is discussed. The distributed MCU model has been applied successfully in our interactive synchronous real-time telesteaching system RealClass and has shown good extendibility in operation.

  9. Solvent hold tank sample results for MCU-14-913 and MCU-14-986/987: October 2014 monthly

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Taylor-Pashow, K. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-01-01

    SRNL received two sets of SHT samples (MCU-14-913, pulled 10/7/2014 and MCU-14-986/987, pulled on 10/27/2014) for analysis. The samples were analyzed for composition. Analysis of sample MCU-14- 913 indicated low concentrations of the suppressor (TiDG) and of the modifier (CS-7SB) in the solvent. The addition of suppressor and modifier to the solvent on October 26, 2014 restored the concentration of these components to nominal levels as confirmed with the analysis of sample MCU-14-986/987. The laboratory will continue to monitor the quality of the solvent in particular for any new impurity or degradation of the solvent components.

  10. Mitochondrial Ca(2+) uniporter (MCU)-dependent and MCU-independent Ca(2+) channels coexist in the inner mitochondrial membrane.

    Science.gov (United States)

    Bondarenko, Alexander I; Jean-Quartier, Claire; Parichatikanond, Warisara; Alam, Muhammad Rizwan; Waldeck-Weiermair, Markus; Malli, Roland; Graier, Wolfgang F

    2014-07-01

    A protein referred to as CCDC109A and then renamed to mitochondrial calcium uniporter (MCU) has recently been shown to accomplish mitochondrial Ca(2+) uptake in different cell types. In this study, we investigated whole-mitoplast inward cation currents and single Ca(2+) channel activities in mitoplasts prepared from stable MCU knockdown HeLa cells using the patch-clamp technique. In whole-mitoplast configuration, diminution of MCU considerably reduced inward Ca(2+) and Na(+) currents. This was accompanied by a decrease in occurrence of single channel activity of the intermediate conductance mitochondrial Ca(2+) current (i-MCC). However, ablation of MCU yielded a compensatory 2.3-fold elevation in the occurrence of the extra large conductance mitochondrial Ca(2+) current (xl-MCC), while the occurrence of bursting currents (b-MCC) remained unaltered. These data reveal i-MCC as MCU-dependent current while xl-MCC and b-MCC seem to be rather MCU-independent, thus, pointing to the engagement of at least two molecularly distinct mitochondrial Ca(2+) channels.

  11. Determination of the impact of glycolate on ARP and MCU operations

    Energy Technology Data Exchange (ETDEWEB)

    Taylor-Pashow, K. M.L. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Peters, T. B. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Shehee, T. C. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Washington, A. L. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-05-17

    Savannah River Remediation (SRR) is evaluating an alternate flowsheet for the Defense Waste Processing Facility (DWPF) using glycolic acid as a reductant. An important aspect of the development of the glycolic acid flowsheet is determining if glycolate has any detrimental downstream impacts. Testing was performed to determine if there is any impact to the strontium and actinide sorption by monosodium titanate (MST) and modified monosodium titanate (mMST) or if there is an impact to the cesium removal, phase separation, or coalescer performance at the Modular Caustic-Side Solvent Extraction Processing Unit (MCU).

  12. [MCU selection analysis in portable electronic medical instrument design].

    Science.gov (United States)

    Liu, Mengxing; Ye, Shuming; Xu, Zhi; Chen, Hang

    2014-05-01

    Around the features of low power and high integration of portable electronic medical equipment design, the primary low power MCU series from the current semiconductor manufacturers were compared. The analysis results showed that the 32-bit MCUs based on the low cost and high energy efficient ARM Cortex-M architectures, have comprehensive advantages on power level, operational performance and integrated peripherals obviously.

  13. Systematic Identification of MCU Modulators by Orthogonal Interspecies Chemical Screening.

    Science.gov (United States)

    Arduino, Daniela M; Wettmarshausen, Jennifer; Vais, Horia; Navas-Navarro, Paloma; Cheng, Yiming; Leimpek, Anja; Ma, Zhongming; Delrio-Lorenzo, Alba; Giordano, Andrea; Garcia-Perez, Cecilia; Médard, Guillaume; Kuster, Bernhard; García-Sancho, Javier; Mokranjac, Dejana; Foskett, J Kevin; Alonso, M Teresa; Perocchi, Fabiana

    2017-08-17

    The mitochondrial calcium uniporter complex is essential for calcium (Ca(2+)) uptake into mitochondria of all mammalian tissues, where it regulates bioenergetics, cell death, and Ca(2+) signal transduction. Despite its involvement in several human diseases, we currently lack pharmacological agents for targeting uniporter activity. Here we introduce a high-throughput assay that selects for human MCU-specific small-molecule modulators in primary drug screens. Using isolated yeast mitochondria, reconstituted with human MCU, its essential regulator EMRE, and aequorin, and exploiting a D-lactate- and mannitol/sucrose-based bioenergetic shunt that greatly minimizes false-positive hits, we identify mitoxantrone out of more than 600 clinically approved drugs as a direct selective inhibitor of human MCU. We validate mitoxantrone in orthogonal mammalian cell-based assays, demonstrating that our screening approach is an effective and robust tool for MCU-specific drug discovery and, more generally, for the identification of compounds that target mitochondrial functions. Copyright © 2017 Elsevier Inc. All rights reserved.

  14. [Fetal ECG monitoring system based on MCU processing].

    Science.gov (United States)

    Hu, Gang; Chen, Wei; Xie, Xicheng; Zhang, Hao

    2004-12-01

    In order to monitor the fetus in labor, the signal characteristic from fetal scalp electrode is researched, An adaptation algorithm and a peak to peak detecting technology are adopted in signal processing, and an adaptation gain control method is used to eliminate disturber from base-line shift. A fetal ECG monitoring system is designed on the basis of C8051F020 MCU.

  15. Video Conference Based on VoIP MCU Subsystem Design%基于VoIP视频会议的MCU子系统设计

    Institute of Scientific and Technical Information of China (English)

    周康; 雷建锋

    2012-01-01

    Based on the VoIP network phone concept as well as the video conference presentations, as well as the VoIP in video conference system has been widely used. MCU video conference is core component, it can be said to be a video conference in the brain, in a video conferencing system, MCU(multipoint control unit) the main function is to coordinate and control the plurality of terminal of video transmission. This article is from the video conference system is the core component of the MCU subsystem of. On the function of the MCU and MCU and VoIP signaling conversion to the design of the system. System in the VC+ + 6 development platform, using C/S mode.%通过对VoIP网络电话的概念以及视频会议的介绍,以及当今视频会议系统中VoIP被广泛应用.MCU是视频会议的核心组成部分,它可以说是视频会议的大脑,在视频会议系统中,MCU(多点控制单元)主要功能是协调及控制多个终端间的视讯传输.文章主要是从视频会议系统最核心的组成部分MCU子系统人手.对MCU功能以及MCU和VoIP信令转换方面来设计该系统.系统是在VC++6.0平台下开发,采用C/S模式实现的.

  16. Portable Operating Condition Analyzer of Oil Pumping Unit Based on STC MCU%基于 STC 单片机的抽油机便携式工况分析仪

    Institute of Scientific and Technical Information of China (English)

    王金玉; 侯士波; 刘淄航; 林雨晴

    2016-01-01

    以 STC12C5A 系列单片机为核心设计了一个抽油机便携式工况分析仪,给出了硬件电路设计和软件设计。分析仪通过电压和电流互感器采集抽油机电参数,通过红外光电反射式传感器采集抽油机电机转速,将采集到的数据通过曲线的形式在液晶屏显示并保存到分析仪的存储器上。同时分析仪通过计算给出平衡调整建议。此外,分析仪还可以通过串口与 PC 实现数据通信,把采集到的数据传输到上位机上。%Having STC12C5A microcontroller cored to design a portable operating condition analyzer of pum-ping unit was implemented,including the design of its hardware circuit and softwares.This analyzer collects pumping unit’s electrical parameters through voltage transformer and current transformer and acquires the mo-tor speed by optical encoder and infrared sensor;the collected data can be displayed on LCD screen in the form of curves and then be saved to the analyzer;meanwhile,this analyzer can give balance adjustment sug-gestions after calculation and communication with PC via serial port so that the data can be transferred to the host computer for browsing and printing conveniently.

  17. 一种简易MCU的加法器设计方法%A simplified method of the MCU adder design

    Institute of Scientific and Technical Information of China (English)

    张恒; 江猛

    2011-01-01

    Arithmetic Logic Unit(ALU) is the core of the Micro Control Unit(MCU) operation, equivalent to the human brain. The operation performance of ALU directly affects the efficiency of the entire running of MCU. General simple MCU cores need only add, subtract and logical operations, not involving multiplication and division. Aiming to this feature, a simple adder circuit is designed. The simulation verification under FPGA is performed, whose results meet the design requirements. The ALU part in the design can achieve the functions of addition, subtraction, logic and-or-not and data transferring according to the enabling signals.%算术逻辑部件(ALU)是整个微控制单元(MCU)运算的核心,相当于人类的大脑.ALU的运算性能直接影响整个MCU运行的效率.一般简易MCU的内核只需进行加、减、逻辑运算等,不涉及到乘除,针对此特点设计了一种简易的加法电路,并在FPGA下进行仿真验证,仿真结果达到了设计要求,该ALU部分能根据不同的使能信号实现加、减、逻辑与或非以及数据传输功能.

  18. MCUR1 Is a Scaffold Factor for the MCU Complex Function and Promotes Mitochondrial Bioenergetics.

    Science.gov (United States)

    Tomar, Dhanendra; Dong, Zhiwei; Shanmughapriya, Santhanam; Koch, Diana A; Thomas, Toby; Hoffman, Nicholas E; Timbalia, Shrishiv A; Goldman, Samuel J; Breves, Sarah L; Corbally, Daniel P; Nemani, Neeharika; Fairweather, Joseph P; Cutri, Allison R; Zhang, Xueqian; Song, Jianliang; Jaña, Fabián; Huang, Jianhe; Barrero, Carlos; Rabinowitz, Joseph E; Luongo, Timothy S; Schumacher, Sarah M; Rockman, Michael E; Dietrich, Alexander; Merali, Salim; Caplan, Jeffrey; Stathopulos, Peter; Ahima, Rexford S; Cheung, Joseph Y; Houser, Steven R; Koch, Walter J; Patel, Vickas; Gohil, Vishal M; Elrod, John W; Rajan, Sudarsan; Madesh, Muniswamy

    2016-05-24

    Mitochondrial Ca(2+) Uniporter (MCU)-dependent mitochondrial Ca(2+) uptake is the primary mechanism for increasing matrix Ca(2+) in most cell types. However, a limited understanding of the MCU complex assembly impedes the comprehension of the precise mechanisms underlying MCU activity. Here, we report that mouse cardiomyocytes and endothelial cells lacking MCU regulator 1 (MCUR1) have severely impaired [Ca(2+)]m uptake and IMCU current. MCUR1 binds to MCU and EMRE and function as a scaffold factor. Our protein binding analyses identified the minimal, highly conserved regions of coiled-coil domain of both MCU and MCUR1 that are necessary for heterooligomeric complex formation. Loss of MCUR1 perturbed MCU heterooligomeric complex and functions as a scaffold factor for the assembly of MCU complex. Vascular endothelial deletion of MCU and MCUR1 impaired mitochondrial bioenergetics, cell proliferation, and migration but elicited autophagy. These studies establish the existence of a MCU complex that assembles at the mitochondrial integral membrane and regulates Ca(2+)-dependent mitochondrial metabolism.

  19. MCUR1 Is a Scaffold Factor for the MCU Complex Function and Promotes Mitochondrial Bioenergetics

    Directory of Open Access Journals (Sweden)

    Dhanendra Tomar

    2016-05-01

    Full Text Available Mitochondrial Ca2+ Uniporter (MCU-dependent mitochondrial Ca2+ uptake is the primary mechanism for increasing matrix Ca2+ in most cell types. However, a limited understanding of the MCU complex assembly impedes the comprehension of the precise mechanisms underlying MCU activity. Here, we report that mouse cardiomyocytes and endothelial cells lacking MCU regulator 1 (MCUR1 have severely impaired [Ca2+]m uptake and IMCU current. MCUR1 binds to MCU and EMRE and function as a scaffold factor. Our protein binding analyses identified the minimal, highly conserved regions of coiled-coil domain of both MCU and MCUR1 that are necessary for heterooligomeric complex formation. Loss of MCUR1 perturbed MCU heterooligomeric complex and functions as a scaffold factor for the assembly of MCU complex. Vascular endothelial deletion of MCU and MCUR1 impaired mitochondrial bioenergetics, cell proliferation, and migration but elicited autophagy. These studies establish the existence of a MCU complex that assembles at the mitochondrial integral membrane and regulates Ca2+-dependent mitochondrial metabolism.

  20. CHARACTERIZATION AND EVALUATION OF CAUSTIC WASH TANK AND SOLVENT HOLD TANK SAMPLES FROM MCU FROM AUGUST TO SEPTEMBER 2011

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F.; Fink, S.

    2012-08-01

    During processing of Salt Batches 3 and 4 in the Modular Caustic-Side Solvent Extraction Unit (MCU), the decontamination efficiency for cesium declined from historical values and from expectations based on laboratory testing. This report documents efforts to analyze samples of solvent and process solutions from MCU in an attempt to understand the cause of the reduced performance and to recommend mitigations. CWT Solutions from MCU from the time period of variable decontamination factor (DF) performance which covers from April 2011 to September 2011 (during processing of Salt Batch 4) were examined for impurities using chromatography and spectroscopy. The results indicate that impurities were found to be of two types: aromatic containing impurities most likely from Modifier degradation and aliphatic type impurities most likely from Isopar{reg_sign} L and tri-n-octylamine (TOA) degradation. Caustic washing the Solvent Hold Tank (SHT) solution with 1M NaOH improved its extraction ability as determined from {sup 22}Na uptake tests. Evidence from this work showed that pH variance in the aqueous solutions within the range of 1M nitric acid to 1.91M NaOH that contacted the solvent samples does not influence the analytical determination of the TOA concentration by GC-MS.

  1. Mitochondrial calcium uniporter protein MCU is involved in oxidative stress-induced cell death.

    Science.gov (United States)

    Liao, Yajin; Hao, Yumin; Chen, Hong; He, Qing; Yuan, Zengqiang; Cheng, Jinbo

    2015-06-01

    Mitochondrial calcium uniporter (MCU) is a conserved Ca(2+) transporter at mitochondrial in eukaryotic cells. However, the role of MCU protein in oxidative stress-induced cell death remains unclear. Here, we showed that ectopically expressed MCU is mitochondrial localized in both HeLa and primary cerebellar granule neurons (CGNs). Knockdown of endogenous MCU decreases mitochondrial Ca(2+) uptake following histamine stimulation and attenuates cell death induced by oxidative stress in both HeLa cells and CGNs. We also found MCU interacts with VDAC1 and mediates VDAC1 overexpression-induced cell death in CGNs. This finding demonstrates that MCU-VDAC1 complex regulates mitochondrial Ca(2+) uptake and oxidative stress-induced apoptosis, which might represent therapeutic targets for oxidative stress related diseases.

  2. [Programmable multichannel electrophysiological stimulator based on MCU and CPLD platform].

    Science.gov (United States)

    Zheng, Yi; Wu, Xiao-Mei; Fang, Zu-Xiang

    2008-01-01

    According to the instruction of the operator, the designed programmable multichannel stimulator will deliver stimuli with an assigned amplitude and a proper width to the electrode-array in various modes. Each stimulation time is controlled by the internal timer of the MCU, while the stimulated electrodes' spatial parameter is controlled by the CPLD. Having abandoned conventional isolation using the transformer, we have adapted optical coupling and stable float ground connection to achieve the safety standard required by physiological measurements.

  3. Unresolved questions from the analysis of mice lacking MCU expression.

    Science.gov (United States)

    Murphy, Elizabeth; Pan, Xin; Nguyen, Tiffany; Liu, Jie; Holmström, Kira M; Finkel, Toren

    2014-07-11

    Entry of mitochondrial calcium is believed to play an essential role in regulating bioenergetics and initiating cell death pathways. We have recently described a mouse model lacking MCU expression. Surprisingly, these mice are viable and the cells and tissues from these animals do not exhibit any marked protection from cell death. Here, we discuss our findings as well as potential explanations for some of the more unexpected results.

  4. [Wearable Medical Devices' MCU Selection Analysis Based on the ARM Cortex-MO+ Architecture].

    Science.gov (United States)

    Wu, Zaoquan; Liu, Mengxing; Qin, Liping; Ye, Shuming; Chen, Hang

    2015-03-01

    According to the characteristics of low cost, high performance, high integration and long battery life of wearable medical devices, the mainstream low-power microcontroller(MCU) series were compared, and came to the conclusion that the MCU series based on ARM Cortex-M0+ architecture were suitable for the development of wearable medical devices. In aspects of power consumption, operational performance, integrated peripherals and cost, the MCU series based on Cortex-M0+ architecture of primary semiconductor companies were compared, aimed at providing the guides of MCU selection for wearable medical devices.

  5. Solvent Hold Tank Sample Results for MCU-15-389-390 and MCU-15-439-440-441. February 2015 Monthly Samples

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Taylor-Pashow, K. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-05-04

    Savannah River National Laboratory (SRNL) received two sets of Solvent Hold Tank (SHT) samples (MCU-15-389 and MCU-15-390 pulled on February 23, 2015 and MCU-15-439, MCU-15-440, and MCU-15-441 pulled on February 28, 2015) for analysis. The samples in each set were combined and analyzed for composition. Analysis of the composite samples MCU-15-389-390 and MCU-15-439-440- 441 indicated a low concentration (~ 92 to 93 % of nominal) of the suppressor (TiDG) and slightly below nominal concentrations of the extractant (MaxCalix), but nominal levels of the modifier (CS-7SB) and of the Isopar™ L. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent on February 22, 2015. Despite that the values are below the target component levels, the current levels of TiDG and MaxCalix are sufficient for continuing operation without adding a trim at this time. No impurities above the 1000 ppm level were found in this solvent. However, the p-nut vials that delivered the samples contained small (1 mm) droplets of oxidized modifier and amides. The laboratory will continue to monitor the quality of the solvent in particular for any new impurity or degradation of the solvent components.

  6. DESIGN OF MCU BASED UNIVERSAL POWER ADAPTER FOR UTILIZING PHOTOVOLTAIC ENERGY

    Directory of Open Access Journals (Sweden)

    MASUDUL HAIDER IMTIAZ,

    2010-12-01

    Full Text Available This paper demonstrates design and implementation of an improved power adapter that can be used with AC main supply as well as photovoltaic power supply by means of DC. This adapter takes input from both ac main supply and dc supply and gives an output of adjustable voltage over a pre-defined range. Whenever the adapteris fed from both the supplies, it makes a decision and takes feed from only one input based on pre-defined preference. The whole system is built around a MCU (Microcontroller Unit, which monitors all the operations and takes decision. The output voltage and system feed status are shown numerically on a display for users.

  7. The System Design of Wireless Basketball Timer Based on MCU and NRF24L01

    Directory of Open Access Journals (Sweden)

    Xie Ying

    2013-05-01

    Full Text Available Currently, Basketball players must know the progress well in time in the game, the presence of electronic timer with LED display influences the basketball games. The wired operation influences the control distance, control reliability, control efficiency and so on. So how to make it longer, anti-interference, easy operation and high efficiency is a difficult problem. A kind of wireless basketball timer is designed based on micro-computer unit (MCU and wireless nRF24L01 module to compensate for the existing disadvantages, which has LED digital tube of large size for the section number display and middle size for game display and 24s display. The user is easy to carry and control the timer wirelessly at any place in the basketball court using the sending control device. The test results show that the system, easy to control and stable to operate, is reliable to transmit the wireless data.

  8. MCU encodes the pore conducting mitochondrial calcium currents.

    Science.gov (United States)

    Chaudhuri, Dipayan; Sancak, Yasemin; Mootha, Vamsi K; Clapham, David E

    2013-06-04

    Mitochondrial calcium (Ca(2+)) import is a well-described phenomenon regulating cell survival and ATP production. Of multiple pathways allowing such entry, the mitochondrial Ca(2+) uniporter is a highly Ca(2+)-selective channel complex encoded by several recently-discovered genes. However, the identity of the pore-forming subunit remains to be established, since knockdown of all the candidate uniporter genes inhibit Ca(2+) uptake in imaging assays, and reconstitution experiments have been equivocal. To definitively identify the channel, we use whole-mitoplast voltage-clamping, the technique that originally established the uniporter as a Ca(2+) channel. We show that RNAi-mediated knockdown of the mitochondrial calcium uniporter (MCU) gene reduces mitochondrial Ca(2+) current (I MiCa ), whereas overexpression increases it. Additionally, a classic feature of I MiCa , its sensitivity to ruthenium red inhibition, can be abolished by a point mutation in the putative pore domain without altering current magnitude. These analyses establish that MCU encodes the pore-forming subunit of the uniporter channel. DOI:http://dx.doi.org/10.7554/eLife.00704.001.

  9. Inhibition of MCU forces extramitochondrial adaptations governing physiological and pathological stress responses in heart.

    Science.gov (United States)

    Rasmussen, Tyler P; Wu, Yuejin; Joiner, Mei-ling A; Koval, Olha M; Wilson, Nicholas R; Luczak, Elizabeth D; Wang, Qinchuan; Chen, Biyi; Gao, Zhan; Zhu, Zhiyong; Wagner, Brett A; Soto, Jamie; McCormick, Michael L; Kutschke, William; Weiss, Robert M; Yu, Liping; Boudreau, Ryan L; Abel, E Dale; Zhan, Fenghuang; Spitz, Douglas R; Buettner, Garry R; Song, Long-Sheng; Zingman, Leonid V; Anderson, Mark E

    2015-07-21

    Myocardial mitochondrial Ca(2+) entry enables physiological stress responses but in excess promotes injury and death. However, tissue-specific in vivo systems for testing the role of mitochondrial Ca(2+) are lacking. We developed a mouse model with myocardial delimited transgenic expression of a dominant negative (DN) form of the mitochondrial Ca(2+) uniporter (MCU). DN-MCU mice lack MCU-mediated mitochondrial Ca(2+) entry in myocardium, but, surprisingly, isolated perfused hearts exhibited higher O2 consumption rates (OCR) and impaired pacing induced mechanical performance compared with wild-type (WT) littermate controls. In contrast, OCR in DN-MCU-permeabilized myocardial fibers or isolated mitochondria in low Ca(2+) were not increased compared with WT, suggesting that DN-MCU expression increased OCR by enhanced energetic demands related to extramitochondrial Ca(2+) homeostasis. Consistent with this, we found that DN-MCU ventricular cardiomyocytes exhibited elevated cytoplasmic [Ca(2+)] that was partially reversed by ATP dialysis, suggesting that metabolic defects arising from loss of MCU function impaired physiological intracellular Ca(2+) homeostasis. Mitochondrial Ca(2+) overload is thought to dissipate the inner mitochondrial membrane potential (ΔΨm) and enhance formation of reactive oxygen species (ROS) as a consequence of ischemia-reperfusion injury. Our data show that DN-MCU hearts had preserved ΔΨm and reduced ROS during ischemia reperfusion but were not protected from myocardial death compared with WT. Taken together, our findings show that chronic myocardial MCU inhibition leads to previously unanticipated compensatory changes that affect cytoplasmic Ca(2+) homeostasis, reprogram transcription, increase OCR, reduce performance, and prevent anticipated therapeutic responses to ischemia-reperfusion injury.

  10. Universal I/O Design for Customizing MCU

    Institute of Scientific and Technical Information of China (English)

    Jongsung; Kim; Jungwhan; Choi; Seongsoo; Lee

    2010-01-01

    <正>Typically,a variety of digital devices are built into the MCU.These digital devices in order to develop a variety of applications PC,various devices such as smart phones should be easily connected.But so far the interface of these devices has not been a unified approach. Development of various types of devices to easily shall be equipped with various interfaces such as UART,SPI,I2C. However,there follows a lot of hardware problems to greatly increasing the number of I/O ports.Universal I/O are four types based on the same port.Each port is controlled the software approach to operate UART,SPI, I2C,etc.

  11. Investigation on MCU Clustering Methodologies for Cross-Section Estimation of RAMs

    CERN Document Server

    Bosser, A; Tsiligiannis, G; Javanainen, A; Kettunen, H; Puchner, H; Saigne, F; Virtanen, A; Wrobel, F; Dilillo, L

    2015-01-01

    During irradiation testing of RAMs, various failure scenarios may occur which may generate different characteristic Multiple Cell Upset (MCU) error patterns. This work proposes a method based on spatial and temporal criteria to identify them.

  12. 打造工程师心目中的理想MCU

    Institute of Scientific and Technical Information of China (English)

    刘义

    2011-01-01

    @@ "绿色设计"正当道,业内所谈的绿色设计概念到底如何理解?MCU市场中的产品呈现哪些特点?面对市场上琳琅满目的MCu(微控制器)产品,工程师选择时应该考虑哪些因素?"绿色MCU"的"绿"又体现在哪些方面?

  13. Determination of the Impact of Glycolate on ARP and MCU Operations

    Energy Technology Data Exchange (ETDEWEB)

    Taylor-Pashow, K. M.L.; Peters, T. B.; Fondeur, F. F.; Shehee, T. C.; Washington, A. L.

    2012-12-13

    Savannah River Remediation (SRR) is evaluating an alternate flowsheet for the Defense Waste Processing Facility (DWPF) using glycolic acid as a reductant. An important aspect of the development of the glycolic acid flowsheet is determining if glycolate has any detrimental downstream impacts. Testing was performed to determine if there is any impact to the strontium and actinide sorption by monosodium titanate (MST) and modified monosodium titanate (mMST) or if there is an impact to the cesium removal, phase separation, or coalescer performance at the Modular Caustic-Side Solvent Extraction Processing Unit (MCU). Sorption testing was performed using both MST and modified MST (mMST) in the presence of 5000 and 10,000 ppm (mass basis) glycolate. 10,000 ppm is the estimated bounding concentration expected in the DWPF recycle stream based on DWPF melter flammable gas model results. The presence of glycolate was found to slow the removal of Sr and Pu by MST, while increasing the removal rate of Np. Results indicate that the impact is a kinetic effect, and the overall capacity of the material is not affected. There was no measurable effect on U removal at either glycolate concentration. The slower removal rates for Sr and Pu at 5000 and 10,000 ppm glycolate could result in lower DF values for these sorbates in ARP based on the current (12 hours) and proposed (8 hours) contact times. For the highest glycolate concentration used in this study, the percentage of Sr removed at 6 hours of contact decreased by 1% and the percentage of Pu removed decreased by nearly 7%. The impact may prove insignificant if the concentration of glycolate that is returned to the tank farm is well below the concentrations tested in this study. The presence of glycolate also decreased the removal rates for all three sorbates (Sr, Pu, and Np) by mMST. Similar to MST, the results for mMST indicate that the impact is a kinetic effect, and the overall capacity of the material is not affected. The

  14. Rearrangement of MICU1 multimers for activation of MCU is solely controlled by cytosolic Ca(2.).

    Science.gov (United States)

    Waldeck-Weiermair, Markus; Malli, Roland; Parichatikanond, Warisara; Gottschalk, Benjamin; Madreiter-Sokolowski, Corina T; Klec, Christiane; Rost, Rene; Graier, Wolfgang F

    2015-10-22

    Mitochondrial Ca(2+) uptake is a vital process that controls distinct cell and organelle functions. Mitochondrial calcium uptake 1 (MICU1) was identified as key regulator of the mitochondrial Ca(2+) uniporter (MCU) that together with the essential MCU regulator (EMRE) forms the mitochondrial Ca(2+) channel. However, mechanisms by which MICU1 controls MCU/EMRE activity to tune mitochondrial Ca(2+) signals remain ambiguous. Here we established a live-cell FRET approach and demonstrate that elevations of cytosolic Ca(2+) rearranges MICU1 multimers with an EC50 of 4.4 μM, resulting in activation of mitochondrial Ca(2+) uptake. MICU1 rearrangement essentially requires the EF-hand motifs and strictly correlates with the shape of cytosolic Ca(2+) rises. We further show that rearrangements of MICU1 multimers were independent of matrix Ca(2+) concentration, mitochondrial membrane potential, and expression levels of MCU and EMRE. Our experiments provide novel details about how MCU/EMRE is regulated by MICU1 and an original approach to investigate MCU/EMRE activation in intact cells.

  15. Mitochondrial calcium uniporter Mcu controls excitotoxicity and is transcriptionally repressed by neuroprotective nuclear calcium signals.

    Science.gov (United States)

    Qiu, Jing; Tan, Yan-Wei; Hagenston, Anna M; Martel, Marc-Andre; Kneisel, Niclas; Skehel, Paul A; Wyllie, David J A; Bading, Hilmar; Hardingham, Giles E

    2013-01-01

    The recent identification of the mitochondrial Ca(2+) uniporter gene (Mcu/Ccdc109a) has enabled us to address its role, and that of mitochondrial Ca(2+) uptake, in neuronal excitotoxicity. Here we show that exogenously expressed Mcu is mitochondrially localized and increases mitochondrial Ca(2+) levels following NMDA receptor activation, leading to increased mitochondrial membrane depolarization and excitotoxic cell death. Knockdown of endogenous Mcu expression reduces NMDA-induced increases in mitochondrial Ca(2+), resulting in lower levels of mitochondrial depolarization and resistance to excitotoxicity. Mcu is subject to dynamic regulation as part of an activity-dependent adaptive mechanism that limits mitochondrial Ca(2+) overload when cytoplasmic Ca(2+) levels are high. Specifically, synaptic activity transcriptionally represses Mcu, via a mechanism involving the nuclear Ca(2+) and CaM kinase-mediated induction of Npas4, resulting in the inhibition of NMDA receptor-induced mitochondrial Ca(2+) uptake and preventing excitotoxic death. This establishes Mcu and the pathways regulating its expression as important determinants of excitotoxicity, which may represent therapeutic targets for excitotoxic disorders.

  16. OPERATIONAL AND COMPOSITIONAL FACTORS THAT AFFECT THE PERFORMANCE PROPERTIES OF ARP/MCU SALTSTONE GROUT

    Energy Technology Data Exchange (ETDEWEB)

    Reigel, M.; Edwards, T.; Pickenheim, B.

    2012-02-15

    The Saltstone Production Facility (SPF) receives low level waste (LLW) salt solution from Tank 50H for treatment and disposal. Tank 50H receives transfers from the Effluent Treatment Project (ETP), the H-Canyon General Purpose Evaporator, and the Actinide Removal Process/Modular Caustic Side Solvent Extraction Unit (ARP/MCU) Decontaminated Salt Solution Hold Tank (DSS-HT). At the SPF, the LLW is mixed with premix (a cementitious mixture of portland cement (PC), blast furnace slag (BFS) and Class F fly ash (FA)) in a Readco mixer to produce fresh (uncured) saltstone that is transferred to the Saltstone Disposal Facility (SDF) vaults. The saltstone formulation (mix design) must produce a grout waste form that meets both placement and performance properties. In previous simulated saltstone studies, multiple compositional factors were identified that drive the performance properties of saltstone made from the projected ARP/MCU salt solution. This composition was selected as salt solution simulant since ARP/MCU is the primary influent into Tank 50H. The primary performance property investigated was hydraulic conductivity since it is a variable input property to the saltstone Performance Assessment (PA) transport model. In addition, the porosity, also referred to as void structure, is another variable that impacts the PA response. In addition, Young's modulus and cured density are other performance properties analyzed in this report; however they are indicators of the performance of saltstone and not direct inputs into the PA. The data from previous studies showed that the largest impact on the performance properties of saltstone was due to curing temperature, followed by aluminate concentration in the salt solution, water to premix ratio and premix composition. However, due to the scope of the previous studies, only a few mixes were cured and analyzed at higher temperatures. The samples cured at 60 C had an increased hydraulic conductivity of approximately 600

  17. Tris (isodecyl) guanidine degradation in the MCU system

    Energy Technology Data Exchange (ETDEWEB)

    Peters, T. B. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-06-01

    The current solvent blend consists of four components; an extractant, the modifier, a suppressor, and the diluent. Of the four components, only the suppressor – tris(isodecyl)guanidine (TiDG) has exhibited an appreciable depletion rate during facility operations.∇ Using data derived from MCU process samples, SRNL derived a method to predict the TiDG depletion based upon time and volume of feed processed. With the current data set, the following formula can estimate the TiDG concentrations after processing: At = [A0×exp(-0.000900×t)] – [5.39E-06×volume] where At is the TiDG concentration (mM) at time t (days), A0 is the TiDG concentration (mM) at time = 0, and volume is the amount of salt solution processed in gallons from time 0 to time t. The ability to use this formula as a predictive tool is limited due to the number of data points obtained for this scope of work. As such, this formula should not be used to precisely predict future TiDG concentrations.

  18. Integrative genomics identifies MCU as an essential component of the mitochondrial calcium uniporter.

    Science.gov (United States)

    Baughman, Joshua M; Perocchi, Fabiana; Girgis, Hany S; Plovanich, Molly; Belcher-Timme, Casey A; Sancak, Yasemin; Bao, X Robert; Strittmatter, Laura; Goldberger, Olga; Bogorad, Roman L; Koteliansky, Victor; Mootha, Vamsi K

    2011-06-19

    Mitochondria from diverse organisms are capable of transporting large amounts of Ca(2+) via a ruthenium-red-sensitive, membrane-potential-dependent mechanism called the uniporter. Although the uniporter's biophysical properties have been studied extensively, its molecular composition remains elusive. We recently used comparative proteomics to identify MICU1 (also known as CBARA1), an EF-hand-containing protein that serves as a putative regulator of the uniporter. Here, we use whole-genome phylogenetic profiling, genome-wide RNA co-expression analysis and organelle-wide protein coexpression analysis to predict proteins functionally related to MICU1. All three methods converge on a novel predicted transmembrane protein, CCDC109A, that we now call 'mitochondrial calcium uniporter' (MCU). MCU forms oligomers in the mitochondrial inner membrane, physically interacts with MICU1, and resides within a large molecular weight complex. Silencing MCU in cultured cells or in vivo in mouse liver severely abrogates mitochondrial Ca(2+) uptake, whereas mitochondrial respiration and membrane potential remain fully intact. MCU has two predicted transmembrane helices, which are separated by a highly conserved linker facing the intermembrane space. Acidic residues in this linker are required for its full activity. However, an S259A point mutation retains function but confers resistance to Ru360, the most potent inhibitor of the uniporter. Our genomic, physiological, biochemical and pharmacological data firmly establish MCU as an essential component of the mitochondrial Ca(2+) uniporter.

  19. Solvent Hold Tank Sample Results For MCU-15-710-711-712: June 2015 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Taylor-Pashow, K. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-10-07

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-710, MCU-15-711, and MCU-15-712), pulled on 06/15/2015 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-15-710-711-712 indicated a low concentration (~ 55 % of nominal) of the suppressor (TiDG) and concentrations of the extractant (MaxCalix), and of the modifier (Cs-7SB) in the solvent that were slightly lower than nominal. This analysis confirms the addition of TiDG, MaxCalix, and modifier (92 % of nominal) to the solvent in February 2015. Based on the current monthly sample, the levels of TiDG, MaxCalix, and modifier were sufficient when this solvent sample was collected from MCU. A higher cesium concentration (9.3 E6 dpm/mL) was observed in this sample relative to recent samples. In the past, this level of cesium appeared to correlate with upsets in the MCU operation. It is not known at this time the reason for the higher cesium level in this solvent. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). In addition, the sample contains up to 10.4 micrograms of mercury per gram of solvent (or 8.7 µg/mL). A relatively large cesium concentration (9.3 E 6 dpm/mL) was measured in this solvent and it may indicate poor cesium stripping. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.

  20. Solvent hold tank sample results for MCU-16-1317-1318-1319: September 2016 monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-06-16

    Savannah River National Laboratory (SRNL) received one set of three Solvent Hold Tank (SHT) samples (MCU-16-1317-1318-1319), pulled on 09/12/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-1317-1318-1319 indicated the Isopar™L concentration is above its nominal level (102%). The extractant (MaxCalix) and the modifier (CS-7SB) are 5% and 9% below their nominal concentrations. The suppressor (TiDG) is 76% below its nominal concentration. A summary of the concentration of the relevant solvent components is shown below.

  1. Solvent hold tank sample results for MCU-16-1363-1364-1365: November 2016 monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-06-16

    Savannah River National Laboratory (SRNL) received one set of three Solvent Hold Tank (SHT) samples (MCU-16-1363-1364-1365), pulled on 11/15/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-1363-1364-1365 indicated the Isopar™L concentration is at its nominal level (100%). The extractant (MaxCalix) and the modifier (CS- 7SB) are 8% and 2 % below their nominal concentrations. The suppressor (TiDG) is 7% below its nominal concentration. A summary of the concentration of the relevant solvent components is shown below.

  2. Solvent hold tank sample results for MCU-16-1247-1248-1249: August 2016 monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-06-16

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-1247-1248-1249), pulled on 08/22/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-1247-1248-1249 indicated the Isopar™L concentration is above its nominal level (101%). The extractant (MaxCalix) and the modifier (CS-7SB) are 7% and 9 % below their nominal concentrations. The suppressor (TiDG) is 63% below its nominal concentration. A summary of the concentration of the relevant solvent components is shown below.

  3. The Impact Of The MCU Life Extension Solvent On Sludge Batch 8 Projected Operating Windows

    Energy Technology Data Exchange (ETDEWEB)

    Peeler, D. K.; Edwards, T. B.; Stone, M. E.

    2013-08-14

    As a part of the Actinide Removal Process (ARP)/Modular Caustic Side Solvent Extraction Unit (MCU) Life Extension Project, a next generation solvent (NGS) and a new strip acid will be deployed. The strip acid will be changed from dilute nitric acid to dilute boric acid (0.01 M). Because of these changes, experimental testing or evaluations with the next generation solvent are required to determine the impact of these changes (if any) to Chemical Process Cell (CPC) activities, glass formulation strategies, and melter operations at the Defense Waste Processing Facility (DWPF). The introduction of the dilute (0.01M) boric acid stream into the DWPF flowsheet has a potential impact on glass formulation and frit development efforts since B2O3 is a major oxide in frits developed for DWPF. Prior knowledge of this stream can be accounted for during frit development efforts but that was not the case for Sludge Batch 8 (SB8). Frit 803 has already been recommended and procured for SB8 processing; altering the frit to account for the incoming boron from the strip effluent (SE) is not an option for SB8. Therefore, the operational robustness of Frit 803 to the introduction of SE including its compositional tolerances (i.e., up to 0.0125M boric acid) is of interest and was the focus of this study. The primary question to be addressed in the current study was: What is the impact (if any) on the projected operating windows for the Frit 803 – SB8 flowsheet to additions of B2O3 from the SE in the Sludge Receipt and Adjustment Tank (SRAT)? More specifically, will Frit 803 be robust to the potential compositional changes occurring in the SRAT due to sludge variation, varying additions of ARP and/or the introduction of SE by providing access to waste loadings (WLs) of interest to DWPF? The Measurement Acceptability Region (MAR) results indicate there is very little, if any, impact on the projected operating windows for the Frit 803 – SB8 system regardless of the presence or absence

  4. Solvent Hold Tank Sample Results for MCU-15-556-557-558. March 2015 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Taylor-Pashow, K. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-05-04

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-556, MCU-15-557, and MCU-15-558), pulled on 03/16/2015 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-15-556-557-558 indicated a low concentration (~ 78 % of nominal) of the suppressor (TiDG) and concentrations of the extractant (MaxCalix), and of the modifier (CS-7SB) in the solvent that were slightly lower than nominal. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent in February 2015. Based on the current monthly sample, the levels of TiDG, MaxCalix, and modifier are sufficient for continuing operation without adding a trim at this time. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). However, the p-nut vials that delivered the samples contained small (1 mm) droplets of oxidized modifier and amides (as detected by the FTIR analysis). In addition, up to 21 microgram of mercury per gram of solvent (or 17.4 µg/mL) was detected in this sample. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.

  5. Normally Off ECG SoC With Non-Volatile MCU and Noise Tolerant Heartbeat Detector.

    Science.gov (United States)

    Izumi, Shintaro; Yamashita, Ken; Nakano, Masanao; Yoshimoto, Shusuke; Nakagawa, Tomoki; Nakai, Yozaburo; Kawaguchi, Hiroshi; Kimura, Hiromitsu; Marumoto, Kyoji; Fuchikami, Takaaki; Fujimori, Yoshikazu; Nakajima, Hiroshi; Shiga, Toshikazu; Yoshimoto, Masahiko

    2015-10-01

    This paper describes an electrocardiograph (ECG) monitoring SoC using a non-volatile MCU (NVMCU) and a noise-tolerant instantaneous heartbeat detector. The novelty of this work is the combination of the non-volatile MCU for normally off computing and a noise-tolerant-QRS (heartbeat) detector to achieve both low-power and noise tolerance. To minimize the stand-by current of MCU, a non-volatile flip-flop and a 6T-4C NVRAM are used. Proposed plate-line charge-share and bit-line non-precharge techniques also contribute to mitigate the active power overhead of 6T-4C NVRAM. The proposed accurate heartbeat detector uses coarse-fine autocorrelation and a template matching technique. Accurate heartbeat detection also contributes system-level power reduction because the active ratio of ADC and digital block can be reduced using heartbeat prediction. Measurement results show that the fully integrated ECG-SoC consumes 6.14 μ A including 1.28- μA non-volatile MCU and 0.7- μA heartbeat detector.

  6. Solvent Hold Tank Sample Results For MCU-15-750-751-752-: June Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Taylor-Pashow, K. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-10-07

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-750, MCU-15-751, and MCU-15-752), pulled on 06/22/2015 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-15-750-751-752 indicated a low concentration (~ 49 % of nominal) of the suppressor (TiDG) and slightly lower than nominal concentrations of the extractant (MaxCalix), and of the modifier (Cs-7SB) in the solvent. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent in February 2015. Based on the current monthly sample, the levels of TiDG, MaxCalix, and modifier are sufficient for continuing operation without adding a trim at this time but it is recommended that an addition of TiDG, modifier and Isopar™L should be made in the near future. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). In addition, up to 13.9 micrograms of mercury per gram of solvent (or 11.5 µg/mL) was detected in this sample. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.

  7. The mitochondrial protein Mcu1 plays important roles in carbon source utilization, filamentation, and virulence in Candida albicans.

    Science.gov (United States)

    Guan, Guobo; Wang, Haitao; Liang, Weihong; Cao, Chengjun; Tao, Li; Naseem, Shamoon; Konopka, James B; Wang, Yue; Huang, Guanghua

    2015-08-01

    The fungus Candida albicans is both a pathogen and a commensal in humans. The ability to utilize different carbon sources available in diverse host niches is vital for both commensalism and pathogenicity. N-acetylglucosamine (GlcNAc) is an important signaling molecule as well as a carbon source in C. albicans. Here, we report the discovery of a novel gene MCU1 essential for GlcNAc utilization. Mcu1 is located in mitochondria and associated with multiple energy- and metabolism-related proteins including Por1, Atp1, Pet9, and Mdh1. Consistently, inactivating Por1 impaired GlcNAc utilization as well. Deletion of MCU1 also caused defects in utilizing non-fermentable carbon sources and amino acids. Furthermore, MCU1 is required for filamentation in several inducing conditions and virulence in a mouse systemic infection model. We also deleted TGL99 and GUP1, two genes adjacent to MCU1, and found that the gup1/gup1 mutant exhibited mild defects in the utilization of several carbon sources including GlcNAc, maltose, galactose, amino acids, and ethanol. Our results indicate that MCU1 exists in a cluster of genes involved in the metabolism of carbon sources. Given its importance in metabolism and lack of a homolog in humans, Mcu1 could be a potential target for developing antifungal agents.

  8. MCu IUD与TCu220C IUD的临床效果观察

    Institute of Scientific and Technical Information of China (English)

    邵培玲; 赵传富

    2011-01-01

    目的观察MCu IUD和TCu220C IUD的临床效果。方法选择2008年3月至5月在我站自愿要求放置IUD避孕而无禁忌症的已婚育龄妇女680例,随机分为2组,每组340例,分别放置MCu IUD和TCu220C IUD,于置器后1、3、6和12个月进行随访,以生命表法统计2种IUD的使用情况。结果2种IUD使用12个月的妊娠率、脱落率、因症取出率和续用率分别为:MCu IUD 0,1.47%,2.06%,96.47%;TCu220C 0.88%,8.53%,6.47%,84.12%,经统计学处理。2种IUD妊娠率比较,差异无统计学意义(P〉0.05);MCu IUD的脱落率明显低于TCu220C,差异有统计学意义(P〈0.01);因症取出率MCuIUD低于TCu220C IUD,差异有统计学意义(P〈0.05);续用率MCu IUD明显高于TCu220C IUD,差异有统计学意义(P〈0.01)。结论MCu IUD具有脱落率低,因症取出率低,续用率高的优点,值得在临床推广应用。

  9. 放置MYCuIUD与MCuIUD12个月效果观察%Observation on the clinical efficacy of MYCuIUD containing 25mg indomethacin and MCuIUD Functional IUD

    Institute of Scientific and Technical Information of China (English)

    闫颖; 王丽

    2013-01-01

    Objective:To observe the clinical effect and safety of MYCuIUD intrauterine device (MYCuIUD) containing 25mg indomethacin and MCu functional IUD(MCuIUD). Methods:Two types of IUDs were randomly insertion 100 women each IUD.The women were followed up 1,3,6,and 12 months after insertion. Results:Twelve months after insertion, in MYCuIUD group and MCuIUD group, the cumulative expulsion rate was 0.02/100 and 0.03/100 women per year, respectively(P>0.05);the rate of IUD removal for medical reasons(mainly bleeding and pain)was 0.08/100and 0.07/100 women per year, respectively(p>0.05).1or 3months after insertion, the cumulative rate of pregnancy with IUD in situ, the occurrences of abnormal menstruation and low back/abdominal pain in MCuIUD group were higher than those in MYCuIUD group (p<0.05).Conclusion:Both MYCuIUD and MCuIUD performed with low expulsion, low occurrence of side effect after insertion, and good reversibility. MYCuIUD can reduce bleeding and pain at the early stage of insertion, with well contraceptive effect than MCuIUD.%目的:观察MYCuIUD与MCuIUD的临床效果及安全性。方法:多中心随机放置MYCuIUD与MCuIUD各100例,术后1、3、6、12个月随访。结果:放置12个月累积脱落率为0.02/百妇女年和0.03/百妇女年;因医疗原因取出分别是0.07/百妇女年和0.08/百妇女年;主要副作用为出血和疼痛,以上差异无统计学意义。放置1、3月后累计带器妊娠率及月经异常及腰腹疼痛发生率 MYCuIUD 组低于 MCuIUD 组。结论:MYCuIUD 与MCuIUD同样具有脱落率低、副作用发生率低的特点,放置MYCuIUD较MCuIUD具抗生育效果好,可减少放置之后的出血和疼痛。

  10. Solvent Hold Tank Sample Results for MCU-16-348-349-350: March 2016 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-05-17

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-348-349-350), pulled on 03/30/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-348-349-350 indicated the IsoparTML concentration is above its nominal level (101%). The modifier (CS-7SB) and the TiDG concentrations are 9% and 55% below their nominal concentrations. This analysis confirms the solvent may require the addition of TiDG, and possibly of modifier. Based on the current monthly sample, the levels of TiDG, IsoparTML, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended.

  11. Solvent Hold Tank Sample Results for MCU-16-270-271-272: February 2016 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-05-12

    Savannah River National Lab (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-270-271-272), pulled on 02/21/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-270-271-272 indicated the IsoparTML concentration is above its nominal level (101%). The modifier (CS-7SB), the extractant (MaxCalix), and the TiDG concentrations are 7%, 6%, and 40% below their nominal concentrations. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent in November 2015. Based on the current monthly sample, the levels of TiDG, IsoparTML, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended.

  12. Solvent Hold Tank Sample Results for MCU-16-934-935-936: June 2016 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-08-30

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-934-935-936), pulled on 07/01/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-934-935-936 indicated the Isopar™L concentration is above its nominal level (101%). The modifier (CS-7SB) and the TiDG concentrations are 8% and 29 % below their nominal concentrations. This analysis confirms the solvent may require the addition of TiDG, and possibly of modifier. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended.

  13. Solvent hold tank sample results for MCU-16-1317-1318-1319. September 2016 monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-01-01

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-1317-1318-1319), pulled on 09/12/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-1317-1318-1319 indicated the Isopar™L concentration is above its nominal level (102%). The extractant (MaxCalix) and the modifier (CS-7SB) are 5% and 10 % below their nominal concentrations. The suppressor (TiDG) is 77% below its nominal concentration. A summary of the concentration of the relevant solvent components is shown below. This analysis confirms the Isopar™ addition to the solvent in August. This analysis also indicates the solvent may require the addition of TiDG, and possibly of modifier to restore them to nominal levels.

  14. Solvent Hold Tank Sample Results for MCU-16-596-597-598: April 2016 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL). Advanced Characterization and Processing; Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL). Research Support

    2016-07-12

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-596-597-598), pulled on 04/30/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-596-597-598 indicated the Isopar™L concentration is above its nominal level (102%). The modifier (CS-7SB) is 14% below its nominal concentration, while the TiDG and MaxCalix concentrations are at and above their nominal concentrations, respectively. This analysis confirms the solvent may require the addition of modifier. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended.

  15. Solvent hold tank sample results for MCU-16-1363-1365. November 2016 monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-03-22

    Savannah River National Laboratory (SRNL) received one set of three Solvent Hold Tank (SHT) samples (MCU-16-1363-1364-1365), pulled on 11/15/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-1363-1364-1365 indicated the Isopar™L concentration is at its nominal level (100%). The extractant (MaxCalix) and the modifier (CS- 7SB) are 8% and 2 % below their nominal concentrations. The suppressor (TiDG) is 7% below its nominal concentration. This analysis confirms the trim and Isopar™ additions to the solvent in November. This analysis also indicates the solvent did not require further additions. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended.

  16. The Impact Of The MCU Life Extension Solvent On Sludge Batch 8 Projected Operating Windows

    Energy Technology Data Exchange (ETDEWEB)

    Peeler, D. K.; Edwards, T. B.

    2013-06-26

    As a part of the Actinide Removal Process (ARP)/Modular Caustic Side Solvent Extraction Unit (MCU) Life Extension Project, a next generation solvent (NGS) and a new strip acid will be deployed. The strip acid will be changed from dilute nitric acid to dilute boric acid (0.01 M). Because of these changes, experimental testing or evaluations with the next generation solvent are required to determine the impact of these changes (if any) to Chemical Process Cell (CPC) activities, glass formulation strategies, and melter operations at the Defense Waste Processing Facility (DWPF). The introduction of the dilute (0.01 M) boric acid stream into the DWPF flowsheet has a potential impact on glass formulation and frit development efforts since B203 is a major oxide in frits developed for DWPF. Prior knowledge of this stream can be accounted for during frit development efforts but that was not the case for Sludge Batch 8 (SB8). Frit 803 has already been recommended and procured for SB8 processing; altering the frit to account for the incoming boron from the strip effluent (SE) is not an option for SB8. Therefore, the operational robustness of Frit 803 to the introduction of SE including its compositional tolerances (i.e., up to 0.0125M boric acid) is of interest and was the focus of this study. The primary question to be addressed in the current study was: What is the impact (if any) on the projected operating windows for the Frit 803 - SB8 flowsheet to additions of B203 from the SE in the Sludge Receipt and Adjustment Tank (SRAT)? More specifically, will Frit 803 be robust to the potential compositional changes occurring in the SRAT due to sludge variation, varying additions of ARP and/or the introduction of SE by providing access to waste loadings (WLs) of interest to DWPF? The Measurement Acceptability Region (MAR) results indicate there is very little, if any, impact on the projected operating windows for the Frit 803 - SB8 system regardless of the presence or absence of

  17. Solvent Hold Tank Sample Results for MCU-15-661-662-663: April 2015 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Taylor-Pashow, K. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-07-08

    The Savannah River National Lab (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-661, MCU-15-662, and MCU-15-663 pulled on April 2, 2015) for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-15-661-662-663 indicated a low concentration (~ 63% of nominal) of the suppressor (TiDG) and a slightly below the nominal concentration (~ 10% below nominal) of the extractant (MaxCalix). The modifier (CS-7SB) level was also 10% below its nominal value while the Isopar™ L level was slightly above its nominal value. This analysis confirms the addition of Isopar™L to the solvent on March 6, 2015. Despite that the values are below target component levels, the current levels of TiDG, CS-7SB and MaxCalix are sufficient for continuing operation without adding a trim at this time until the next monthly sample. No impurities above the 1000 ppm level were found in this solvent. However, the sample was found to contain approximately 18.4 ug/gsolvent mercury. The gamma level increased to 8 E5 dpm/mLsolvent and it represents an order of magnitude increase relative to previous solvent samples. The increase means less cesium is being stripped from the solvent. Further analysis is needed to determine if the recent spike in the gamma measurement is due to external factors such as algae or other material that may impede stripping. The laboratory will continue to monitor the quality of the solvent in particular for any new impurity or degradation of the solvent components.

  18. [Design of a bowel sounds acquisition system based on C8051F340 MCU].

    Science.gov (United States)

    Zhang, He-Hua; Wu, Bao-Ming; Zhuo, Yu; Zhang, Lian-Yang; Wang, Xi-Long

    2008-05-01

    This paper introduces an eight channels dada acquisition system. A peripheral circuit based on C8051F340 MCU has been designed and its USB controller is used to transfer data, which realizes real-time detection, display and storage of bowel sounds. The system has many advantages such as high precision and stable performance, and thus provides a new means for the bowel sounds study.

  19. 基于单片Wi-Fi MCU CC3200的无线串口%Wireless UART Base on the Wi-Fi MCU CC3200

    Institute of Scientific and Technical Information of China (English)

    郭书军; 田志鹏

    2016-01-01

    A wireless UART based on the Wi-Fi MCU CC3200 of TI is introduced by this paper. It can implement wireless point to point short distance data transmission transparently. It can extend legacy serial device with function of wireless communication without modification. It has features of simple structure and high reliability with CC3200 as the core device. It can be widely used in remote control and debug, data acquisition and other fields.%本文介绍了基于TI公司单片Wi-Fi MCU CC3200的无线串口。无线串口采用透明传输方式,实现点对点近距离无线传输。无线串口可以为串口设备在无需对设备本身进行改造的情况下增加无线通信功能。无线串口以CC3200芯片为核心器件,硬件简单,可靠性高,可广泛应用于远程控制、数据采集、远程调试等领域。

  20. Solvent hold tank sample results for MCU-16-1488-1493 (December 2016), MCU-17-86-88 (January 2017), and MCU-17-119-121 (February 2017): Quarterly Report

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-06-30

    A trend summary of three Solvent Hold Tank (SHT) monthly samples; MCU-16-1488-1493 (December 2016), MCU-17-86-88 (January 2017), and MCU-17-119-121 (February 2017) are reported. Analyses indicate that the modifier (CS-7SB) and the extractant (MaxCalix) concentrations are at their nominal recommended levels (169,000 mg/L and 46,300 mg/L respectively). The suppressor (TiDG) level has decreased to a steady state level of 673 mg/L well above the minimum recommended level (479 mg/L). This analysis confirms the Isopar™ addition to the solvent in January 18, 2017. This analysis also indicates the solvent did not require further additions. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). Another impurity observed in the samples was mercury. Up to 38 ± 8 micrograms of mercury per mL of solvent was detected in these samples (the average of the CV-AA and XRF methods). The higher mercury concentration in the solvent (as determined in the last three monthly samples) is possibly due to the higher mercury concentration in Salt Batches 8 and 9 (Tank 49H) or mixing of previously undisturbed areas of high mercury concentration in Tank 49H. The gamma level (0.21E5 dpm/mL) measured in the February SHT sample was one order of magnitude lower than the gamma levels observed in the December and January SHT samples. The February gamma level is consistent with the solvent being idle (since January 10, 2017). The gamma levels observed in the December and January SHT samples were consistent with previous monthly measurements where the process operated normally. The laboratory will continue to monitor

  1. MICU1 and MICU2 finely tune the mitochondrial Ca2+ uniporter by exerting opposite effects on MCU activity.

    Science.gov (United States)

    Patron, Maria; Checchetto, Vanessa; Raffaello, Anna; Teardo, Enrico; Vecellio Reane, Denis; Mantoan, Maura; Granatiero, Veronica; Szabò, Ildikò; De Stefani, Diego; Rizzuto, Rosario

    2014-03-01

    Mitochondrial calcium accumulation was recently shown to depend on a complex composed of an inner-membrane channel (MCU and MCUb) and regulatory subunits (MICU1, MCUR1, and EMRE). A fundamental property of MCU is low activity at resting cytosolic Ca(2+) concentrations, preventing deleterious Ca(2+) cycling and organelle overload. Here we demonstrate that these properties are ensured by a regulatory heterodimer composed of two proteins with opposite effects, MICU1 and MICU2, which, both in purified lipid bilayers and in intact cells, stimulate and inhibit MCU activity, respectively. Both MICU1 and MICU2 are regulated by calcium through their EF-hand domains, thus accounting for the sigmoidal response of MCU to [Ca(2+)] in situ and allowing tight physiological control. At low [Ca(2+)], the dominant effect of MICU2 largely shuts down MCU activity; at higher [Ca(2+)], the stimulatory effect of MICU1 allows the prompt response of mitochondria to Ca(2+) signals generated in the cytoplasm.

  2. UCP2 modulates single-channel properties of a MCU-dependent Ca(2+) inward current in mitochondria.

    Science.gov (United States)

    Bondarenko, Alexander I; Parichatikanond, Warisara; Madreiter, Corina T; Rost, Rene; Waldeck-Weiermair, Markus; Malli, Roland; Graier, Wolfgang F

    2015-12-01

    The mitochondrial Ca(2+) uniporter is a highly Ca(2+)-selective protein complex that consists of the pore-forming mitochondrial Ca(2+) uniporter protein (MCU), the scaffolding essential MCU regulator (EMRE), and mitochondrial calcium uptake 1 and 2 (MICU1/2), which negatively regulate mitochondrial Ca(2+) uptake. We have previously reported that uncoupling proteins 2 and 3 (UCP2/3) are also engaged in the activity of mitochondrial Ca(2+) uptake under certain conditions, while the mechanism by which UCP2/3 facilitates mitochondrial Ca(2+) uniport remains elusive. This work was designed to investigate the impact of UCP2 on the three distinct mitochondrial Ca(2+) currents found in mitoplasts isolated from HeLa cells, the intermediate- (i-), burst- (b-) and extra-large (xl-) mitochondrial/mitoplast Ca(2+) currents (MCC). Using the patch clamp technique on mitoplasts from cells with reduced MCU and EMRE unveiled a very high affinity of MCU for xl-MCC that succeeds that for i-MCC, indicating the coexistence of at least two MCU/EMRE-dependent Ca(2+) currents. The manipulation of the expression level of UCP2 by either siRNA-mediated knockdown or overexpression changed exclusively the open probability (NPo) of xl-MCC by approx. 38% decrease or nearly a 3-fold increase, respectively. These findings confirm a regulatory role of UCP2 in mitochondrial Ca(2+) uptake and identify UCP2 as a selective modulator of just one distinct MCU/EMRE-dependent mitochondrial Ca(2+) inward current.

  3. 基于单片机的智能车库计费系统设计%Design of Accounting System for Intelligent Garage Based on MCU

    Institute of Scientific and Technical Information of China (English)

    李荣学

    2013-01-01

    Car is becoming more popular by development of economic. Parking charge is an important part of the garage management. 51 MCU is a classic single-chip product which has the features of simple structure, stable performance and low-cost, and is used widely in control systems. Garage billing issues are researched in this paper, a smart garage billing system is designed with 51 MCU as the main controller unit. The system has simple operation, rich features to fulfill functions of automatic charge, information inquiry and status display with good practical and promotional value.%  经济发展使得汽车的普及程度越来越高,车辆停放计费是车库管理的重要环节。51单片机是经典的单片机产品,具有结构简单、性能稳定和成本低廉的特点,在控制系统中应用广泛。本文对车库计费问题进行了研究,以单片机为主控单元设计进行智能车库计费系统设计,系统操作简单、功能丰富,实现了自动计费、信息查询和状态显示等多项功能,具有良好的实用和推广价值。

  4. Serial Peripheral Interface Communication Between MCU EM78P447A and RF Reader IC MF RC530

    Institute of Scientific and Technical Information of China (English)

    YOU Zhi; CHEN Shu-zhen; HUANG Ji-wu

    2005-01-01

    A significant method in the way the MCU EM78P447A manipulates the RF reader IC MF RC530's functions used in RF IC card application is presented. In this paper, RF reader IC MF RC530's SPI compatible interface is introduced. The kernel technologies including SPI connection, software design,register initiation, request-response between the reader IC and the MCU, authentication and the proper format of the key are explained. Adopting the serial peripheral interface is the innovation in the paper. The SPI communication mode proves feasible and precise. Furthermore, in the way we avoid the abuse of parallel interface.

  5. Solvent Hold Tank Sample Results for MCU-16-934-935-936: June 2016 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-08-30

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-934-935-936), pulled on 07/01/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-934-935-936 indicated the Isopar™L concentration is above its nominal level (101%). The modifier (CS-7SB) and the TiDG concentrations are 8% and 29 % below their nominal concentrations. This analysis confirms the solvent may require the addition of TiDG, and possibly of modifier. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). However, up to 21.1 ± 4 micrograms of mercury per gram of solvent (or 17.5 μg/mL) was detected in this sample (as determined by the XRF method of undigested sample). The current gamma level (1.41E5 dpm/mL) confirmed that the gamma concentration has returned to previous levels (as observed in the late 2015 samples) where the process operated normally and as expected.

  6. Solvent Hold Tank Sample Results for MCU-16-1247-1248-1249: August 2016 Monthly Sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-01-12

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-1247-1248-1249), pulled on 08/22/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-1247-1248-1249 indicated the Isopar™L concentration is above its nominal level (101%). The extractant (MaxCalix) and the modifier (CS-7SB) are 7% and 9 % below their nominal concentrations. The suppressor (TiDG) is 63% below its nominal concentration. This analysis confirms the solvent may require the addition of TiDG, and possibly of modifier and MaxCalix to restore then to nominal levels. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended. At the time of writing this report, A solvent trim batch containing TiDG, modifier and MaxCalix, was added to the SHT (October 2016) and expect the concentration of these components to be at their nominal values.

  7. Test case for VVER-1000 complex modeling using MCU and ATHLET

    Science.gov (United States)

    Bahdanovich, R. B.; Bogdanova, E. V.; Gamtsemlidze, I. D.; Nikonov, S. P.; Tikhomirov, G. V.

    2017-01-01

    The correct modeling of processes occurring in the fuel core of the reactor is very important. In the design and operation of nuclear reactors it is necessary to cover the entire range of reactor physics. Very often the calculations are carried out within the framework of only one domain, for example, in the framework of structural analysis, neutronics (NT) or thermal hydraulics (TH). However, this is not always correct, as the impact of related physical processes occurring simultaneously, could be significant. Therefore it is recommended to spend the coupled calculations. The paper provides test case for the coupled neutronics-thermal hydraulics calculation of VVER-1000 using the precise neutron code MCU and system engineering code ATHLET. The model is based on the fuel assembly (type 2M). Test case for calculation of power distribution, fuel and coolant temperature, coolant density, etc. has been developed. It is assumed that the test case will be used for simulation of VVER-1000 reactor and in the calculation using other programs, for example, for codes cross-verification. The detailed description of the codes (MCU, ATHLET), geometry and material composition of the model and an iterative calculation scheme is given in the paper. Script in PERL language was written to couple the codes.

  8. ESTIMATION OF THE TEMPERATURE RISE OF A MCU ACID STREAM PIPE IN NEAR PROXIMITY TO A SLUDGE STREAM PIPE

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F; Michael Poirier, M; Samuel Fink, S

    2007-07-12

    Effluent streams from the Modular Caustic-Side Solvent Extraction Unit (MCU) will transfer to the tank farms and to the Defense Waste Processing Facility (DWPF). These streams will contain entrained solvent. A significant portion of the Strip Effluent (SE) pipeline (i.e., acid stream containing Isopar{reg_sign} L residues) length is within one inch of a sludge stream. Personnel envisioned the sludge stream temperature may reach 100 C during operation. The nearby SE stream may receive heat from the sludge stream and reach temperatures that may lead to flammability issues once the contents of the SE stream discharge into a larger reservoir. To this end, personnel used correlations from the literature to estimate the maximum temperature rise the SE stream may experience if the nearby sludge stream reaches boiling temperature. Several calculation methods were used to determine the temperature rise of the SE stream. One method considered a heat balance equation under steady state that employed correlation functions to estimate heat transfer rate. This method showed the maximum temperature of the acid stream (SE) may exceed 45 C when the nearby sludge stream is 80 C or higher. A second method used an effectiveness calculation used to predict the heat transfer rate in single pass heat exchanger. By envisioning the acid and sludge pipes as a parallel flow pipe-to-pipe heat exchanger, this method provides a conservative estimation of the maximum temperature rise. Assuming the contact area (i.e., the area over which the heat transfer occurs) is the whole pipe area, the results found by this method nearly matched the results found with the previous calculation method. It is recommended that the sludge stream be maintained below 80 C to minimize a flammable vapor hazard from occurring.

  9. Implementation Method of High-Resolution DAC Using the MCU's PWM Interfaces%微控制器PWM接口实现高分辨率D/A 转换器方法研究

    Institute of Scientific and Technical Information of China (English)

    吴桂清; 李泓霖; 戴瑜兴; 郑宗伟

    2012-01-01

    本文针对嵌入式应用中PWM (Pulse-Width Modulation)方式DAC(Digital-to-Analog Converter)和独立DAC芯片选择问题,提出了通过插值方式和多PWM组合方式提高PWM方式DAC分辨率的方法;分析了PWM信号频谱,提出了模拟滤波器设计原则与方法.以MCU(Micro Control Unit)的PWM通道方式实现DAC,经过数据分析证明此方法稳定可靠.%A method that improving the resolution of PWM(Pulse-Width Modulation) mode DAC(Digital-To-Analog Converter) by interpolator was proposed for the problem that PWM mode DAC in embedded applications and how to choose DAC chip. The PWM signal spectrum was analyzed. The design principle and method of analog filter was proposed. The design of High-Resolution DAC using MCU' s(Micro Control Unit) PWM proved that this method is stable and reliable by analysis of experiments.

  10. Gene expression changes of single skeletal muscle fibers in response to modulation of the mitochondrial calcium uniporter (MCU

    Directory of Open Access Journals (Sweden)

    Francesco Chemello

    2015-09-01

    Full Text Available The mitochondrial calcium uniporter (MCU gene codifies for the inner mitochondrial membrane (IMM channel responsible for mitochondrial Ca2+ uptake. Cytosolic Ca2+ transients are involved in sarcomere contraction through cycles of release and storage in the sarcoplasmic reticulum. In addition cytosolic Ca2+ regulates various signaling cascades that eventually lead to gene expression reprogramming. Mitochondria are strategically placed in close contact with the ER/SR, thus cytosolic Ca2+ transients elicit large increases in the [Ca2+] of the mitochondrial matrix ([Ca2+]mt. Mitochondrial Ca2+ uptake regulates energy production and cell survival. In addition, we recently showed that MCU-dependent mitochondrial Ca2+ uptake controls skeletal muscle trophism. In the same report, we dissected the effects of MCU-dependent mitochondrial Ca2+ uptake on gene expression through microarray gene expression analysis upon modulation of MCU expression by in vivo AAV infection. Analyses were performed on single skeletal muscle fibers at two time points (7 and 14 days post-AAV injection. Raw and normalized data are available on the GEO database (http://www.ncbi.nlm.nih.gov/geo/ (GSE60931.

  11. Gene expression changes of single skeletal muscle fibers in response to modulation of the mitochondrial calcium uniporter (MCU).

    Science.gov (United States)

    Chemello, Francesco; Mammucari, Cristina; Gherardi, Gaia; Rizzuto, Rosario; Lanfranchi, Gerolamo; Cagnin, Stefano

    2015-09-01

    The mitochondrial calcium uniporter (MCU) gene codifies for the inner mitochondrial membrane (IMM) channel responsible for mitochondrial Ca(2 +) uptake. Cytosolic Ca(2 +) transients are involved in sarcomere contraction through cycles of release and storage in the sarcoplasmic reticulum. In addition cytosolic Ca(2 +) regulates various signaling cascades that eventually lead to gene expression reprogramming. Mitochondria are strategically placed in close contact with the ER/SR, thus cytosolic Ca(2 +) transients elicit large increases in the [Ca(2 +)] of the mitochondrial matrix ([Ca(2 +)]mt). Mitochondrial Ca(2 +) uptake regulates energy production and cell survival. In addition, we recently showed that MCU-dependent mitochondrial Ca(2 +) uptake controls skeletal muscle trophism. In the same report, we dissected the effects of MCU-dependent mitochondrial Ca(2 +) uptake on gene expression through microarray gene expression analysis upon modulation of MCU expression by in vivo AAV infection. Analyses were performed on single skeletal muscle fibers at two time points (7 and 14 days post-AAV injection). Raw and normalized data are available on the GEO database (http://www.ncbi.nlm.nih.gov/geo/) (GSE60931).

  12. KEY FACTORS THAT INFLUENCE THE PERFORMANCE PROPERTIES OF ARP/MCU SALTSTONE MIXES

    Energy Technology Data Exchange (ETDEWEB)

    Harbour, J.; Edwards, T.; Williams, V.

    2009-10-05

    At the Saltstone Production Facility (SPF), decontaminated salt solution (DSS) is combined with premix (a cementitious mixture of portland cement (PC), blast furnace slag (BFS) and Class F fly ash (FA)) in a Readco mixer to produce fresh (uncured) Saltstone. After transfer to the Saltstone Disposal Facility (SDF) the hydration reactions initiated during the contact of the premix and salt solution continue during the curing period to produce the hardened waste form product. The amount of heat generated from hydration and the resultant temperature increase in the vaults depend on the composition of the decontaminated salt solution being dispositioned as well as the grout formulation (mix design). This report details the results from Task 3 of the Saltstone Variability Study for FY09 which was performed to identify, and quantify when possible, those factors that drive the performance properties of the projected ARP/MCU Batches. A baseline ARP/MCU mix (at 0.60 water to cementitious materials (w/cm) ratio) was established and consisted of the normal premix composition and a salt solution that was an average of the projected compositions of the last three ARP/MCU batches developed by T. A. Le. This task introduced significant variation in (1) wt % slag, w/cm ratio, and wt % portland cement about the baseline mix and (2) the temperature of curing in order to better assess the dependence of the performance properties on these factors. Two separate campaigns, designated Phase 10 and Phase 11, were carried out under Task 3. Experimental designs and statistical analyses were used to search for correlation among properties and to develop linear models to predict property values based on factors such as w/cm ratio, slag concentration, and portland cement concentration. It turns out that the projected salt compositions contained relatively high amounts of aluminate (0.22 M) even though no aluminate was introduced due to caustic aluminate removal from High Level Waste. Previous

  13. 飞思卡尔提供经济高效的8位MCU

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ 通过推出S08MP16,飞思卡尔半导体公司正在扩展其嵌入式电机控制系列.这种入门级8位微控制器(MCU)系列为从工业驱动到汽车电子燃油泵等无刷直流(BLDC)电机控制应用提供了一种安全、精确且成本优化的解决方案. BLDC电机在消费电子、工业和汽车电子方面日益流行,因为它们比传统的有刷直流和电磁感应电机提供效率和可靠性方面的优点.

  14. Contact urticaria to the MCU-2A/P gas mask.

    Science.gov (United States)

    Elmer, K B; George, R M

    1999-05-01

    A case of contact urticaria to the silicone rubber in the MCU-2A/P gas mask is presented. Contact urticaria is a type I hypersensitivity reaction mediated by immunoglobulin E that usually manifests as localized erythema, edema, pruritus, and urticarial plaques. It can also cause systemic reactions, including anaphylaxis. Allergic reactions to silicone rubber have been increasingly reported and are of importance in medical and military personnel. The implication of such a diagnosis in an active duty military member is significant because the individual cannot be worldwide-qualified. The correct diagnosis of allergic skin reactions to personal protective gear is critical to maintaining a strong fighting force and protecting military personnel from potentially life-threatening allergic reactions.

  15. Solvent hold tank sample results for MCU-16-53-55. January 2016 Monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-03-28

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-16-53-54-55), pulled on 01/25/2016 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-16-53-54-55 indicated the Isopar™L, and MaxCalix are at nominal levels. The modifier and TiDG concentrations are 3% and 23 % below their nominal concentrations. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent on November 28, 2015. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). However, the Fourier transform infra-red spectroscopy (FTIR) method detected trace levels (a few ppm) of amides (a possible degradation product of TiDG). In addition, up to 21 ± 4 micrograms of mercury per gram of solvent (or 17.5 μg/mL) was detected in this sample. There appears to be a possible correlation between the mercury level and the TiDG concentration in the solvent. The current gamma level (9.16 E4 dpm/mL) confirmed that the gamma concentration has returned to previous level where the process operated normally and as expected. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.

  16. Solvent hold tank sample results for MCU-15-914-915-916. December 2015 Monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-03-01

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-914-915-916), pulled on 12/22/2015 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-15-914-915-916 indicated the TiDG, Isopar™L, and MaxCalix are at nominal levels. The modifier concentration is 3% below its nominal concentration. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent in November 2015. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). However, the Fourier transform infra-red spectroscopy (FTIR) method detected trace levels (a few ppm) of amides (more indicative of bacteria than a possible degradation product of TiDG). In addition, up to 18 ± 4 micrograms of mercury per gram of solvent (or 14.8 μg/mL) was detected in this sample. The current gamma concentration level (8.48E4 dpm/mL) confirmed that the gamma concentration has returned to the previous level where the process operated normally as expected. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.

  17. Some Focus Issues in MCU Chip Multi-Sites Testing%MCU芯片Multi-Sites测试中几个值得关注的问题

    Institute of Scientific and Technical Information of China (English)

    陈真; 陆锋; 张凯虹

    2014-01-01

    Describes the MCU chip Multi-Sites Test Method for Multi-Sites MCU chip test difficulty, elaborated MCU chip Multi-Sites in the testing process often affects the efficiency of the test system and test problems, mainly made MCU chip testing process Multi-Sites the DC parametric testing, functional testing of influencing factors and solutions, and the MCU chip Multi-Sites often encountered during testing interference factors were analyzed, as far as possible to ensure the MCU chip Multi-Sites obtained during testing of the performance parameters stable and reliable.%介绍了MCU芯片Multi-Sites测试方法,针对MCU芯片Multi-Sites测试的难点,阐述了在MCU芯片Multi-Sites测试过程中经常影响测试系统和测试效率的问题。主要提出了MCU芯片Multi-Sites测试过程中的直流参数测试、功能测试的影响因素和解决方案,并对MCU芯片Multi-Sites测试过程中经常遇到的干扰因素进行分析,尽可能保证MCU芯片Multi-Sites测试过程中获得的各项性能参数稳定可靠。

  18. Mitochondrial calcium uniporter MCU supports cytoplasmic Ca2+ oscillations, store-operated Ca2+ entry and Ca2+-dependent gene expression in response to receptor stimulation.

    Directory of Open Access Journals (Sweden)

    Krishna Samanta

    Full Text Available Ca2+ flux into mitochondria is an important regulator of cytoplasmic Ca2+ signals, energy production and cell death pathways. Ca2+ uptake can occur through the recently discovered mitochondrial uniporter channel (MCU but whether the MCU is involved in shaping Ca2+ signals and downstream responses to physiological levels of receptor stimulation is unknown. Here, we show that modest stimulation of leukotriene receptors with the pro-inflammatory signal LTC4 evokes a series of cytoplasmic Ca2+ oscillations that are rapidly and faithfully propagated into mitochondrial matrix. Knockdown of MCU or mitochondrial depolarisation, to reduce the driving force for Ca2+ entry into the matrix, prevents the mitochondrial Ca2+ rise and accelerates run down of the oscillations. The loss of cytoplasmic Ca2+ oscillations appeared to be a consequence of enhanced Ca2+-dependent inactivation of InsP3 receptors, which arose from the loss of mitochondrial Ca2+ buffering. Ca2+ dependent gene expression in response to leukotriene receptor activation was suppressed following knockdown of the MCU. In addition to buffering Ca2+ release, mitochondria also sequestrated Ca2+ entry through store-operated Ca2+ channels and this too was prevented following loss of MCU. MCU is therefore an important regulator of physiological pulses of cytoplasmic Ca2+.

  19. Mitochondrial calcium uniporter MCU supports cytoplasmic Ca2+ oscillations, store-operated Ca2+ entry and Ca2+-dependent gene expression in response to receptor stimulation.

    Science.gov (United States)

    Samanta, Krishna; Douglas, Sophie; Parekh, Anant B

    2014-01-01

    Ca2+ flux into mitochondria is an important regulator of cytoplasmic Ca2+ signals, energy production and cell death pathways. Ca2+ uptake can occur through the recently discovered mitochondrial uniporter channel (MCU) but whether the MCU is involved in shaping Ca2+ signals and downstream responses to physiological levels of receptor stimulation is unknown. Here, we show that modest stimulation of leukotriene receptors with the pro-inflammatory signal LTC4 evokes a series of cytoplasmic Ca2+ oscillations that are rapidly and faithfully propagated into mitochondrial matrix. Knockdown of MCU or mitochondrial depolarisation, to reduce the driving force for Ca2+ entry into the matrix, prevents the mitochondrial Ca2+ rise and accelerates run down of the oscillations. The loss of cytoplasmic Ca2+ oscillations appeared to be a consequence of enhanced Ca2+-dependent inactivation of InsP3 receptors, which arose from the loss of mitochondrial Ca2+ buffering. Ca2+ dependent gene expression in response to leukotriene receptor activation was suppressed following knockdown of the MCU. In addition to buffering Ca2+ release, mitochondria also sequestrated Ca2+ entry through store-operated Ca2+ channels and this too was prevented following loss of MCU. MCU is therefore an important regulator of physiological pulses of cytoplasmic Ca2+.

  20. DWPF Flowsheet Studies with Simulants to Determine Modular Caustic Side Solvent Extraction Unit Solvent Partitioning and Verify Actinide Removal Process Incorporation Strategy

    Energy Technology Data Exchange (ETDEWEB)

    Herman, C

    2006-04-21

    The Actinide Removal Process (ARP) facility and the Modular Caustic Side Solvent Extraction Unit (MCU) are scheduled to begin processing salt waste in fiscal year 2007. A portion of the streams generated in the salt processing facilities will be transferred to the Defense Waste Processing Facility (DWPF) to be incorporated in the glass matrix. Before the streams are introduced, a combination of impact analyses and research and development studies must be performed to quantify the impacts on DWPF processing. The Process Science & Engineering (PS&E) section of the Savannah River National Laboratory (SRNL) was requested via Technical Task Request (TTR) HLW/DWPF/TTR-2004-0031 to evaluate the impacts on DWPF processing. Simulant Chemical Process Cell (CPC) flowsheet studies have been performed using previous composition and projected volume estimates for the ARP sludge/monosodium titanate (MST) stream. Due to changes in the flammability control strategy for DWPF for salt processing, the incorporation strategy for ARP has changed and additional ARP flowsheet tests were necessary to validate the new processing strategy. The last round of ARP testing included the incorporation of the MCU stream and identified potential processing issues with the MCU solvent. The identified issues included the potential carry-over and accumulation of the MCU solvent components in the CPC condensers and in the recycle stream to the Tank Farm. Therefore, DWPF requested SRNL to perform additional MCU flowsheet studies to better quantify the organic distribution in the CPC vessels. The previous MCU testing used a Sludge Batch 4 (SB4) simulant since it was anticipated that both of these facilities would begin salt processing during SB4 processing. The same sludge simulant recipe was used in this round of ARP and MCU testing to minimize the number of changes between the two phases of testing so a better comparison could be made. ARP and MCU stream simulants were made for this phase of testing

  1. MICU1 is an essential gatekeeper for MCU-mediated mitochondrial Ca(2+) uptake that regulates cell survival.

    Science.gov (United States)

    Mallilankaraman, Karthik; Doonan, Patrick; Cárdenas, César; Chandramoorthy, Harish C; Müller, Marioly; Miller, Russell; Hoffman, Nicholas E; Gandhirajan, Rajesh Kumar; Molgó, Jordi; Birnbaum, Morris J; Rothberg, Brad S; Mak, Don-On Daniel; Foskett, J Kevin; Madesh, Muniswamy

    2012-10-26

    Mitochondrial Ca(2+) (Ca(2+)(m)) uptake is mediated by an inner membrane Ca(2+) channel called the uniporter. Ca(2+) uptake is driven by the considerable voltage present across the inner membrane (ΔΨ(m)) generated by proton pumping by the respiratory chain. Mitochondrial matrix Ca(2+) concentration is maintained five to six orders of magnitude lower than its equilibrium level, but the molecular mechanisms for how this is achieved are not clear. Here, we demonstrate that the mitochondrial protein MICU1 is required to preserve normal [Ca(2+)](m) under basal conditions. In its absence, mitochondria become constitutively loaded with Ca(2+), triggering excessive reactive oxygen species generation and sensitivity to apoptotic stress. MICU1 interacts with the uniporter pore-forming subunit MCU and sets a Ca(2+) threshold for Ca(2+)(m) uptake without affecting the kinetic properties of MCU-mediated Ca(2+) uptake. Thus, MICU1 is a gatekeeper of MCU-mediated Ca(2+)(m) uptake that is essential to prevent [Ca(2+)](m) overload and associated stress.

  2. 宫内节育器频繁失败再置GyneIUD、MCuIUD临床效果比较

    Institute of Scientific and Technical Information of China (English)

    梁庆芳; 吕金妹

    2004-01-01

    目的比较放置宫内节育器(IUD)失败的妇女再次放置Gyne IUD和放置MCu IUD的临床效果.方法选择2次或2次以上IUD失败妇女206例,随机分成Gyne IUD组(105例)和MCu IUD组(101例),放置时间为月经干净3~7天或人工流产术后,手术由专人按说明书操作,随访12个月.观察两组IUD的避孕效果、续用率及副反应率.结果两组避孕效果均为99%以上.Gyne IUD组续用率为96.20%,MCu IUD组续用率为91.09%,两组差异显著(P<0.05);总副反应率MCu IUD组(25.72%)比Gyne IUD(14.29%)多,也有显著差异(P<0.01);因症取器率MCu IUD组(6.94%)高于Gyne IUD组(2.86%).结论Gyne IUD组以脱落低、续用率高及副反应少的优点更易被接受.

  3. [Design of modulating intermediate frequency electrotherapy system based on microcontroller unit].

    Science.gov (United States)

    Yu, Xuefei; Liu, Xianfeng; Peng, Daming

    2010-12-01

    This article is devoted to the design of a system for modulating intermediate frequency electrotherapy waveform output. Prescriptions with different output waveform combinations were produced using microcontroller unit (MCU). The rich output waveforms effectively improve tolerance of human adaptability and achieve a therapeutic effect.

  4. Design of music player based on MCU STC12C5A60S2%一种基于51单片机的音乐播放器的设计

    Institute of Scientific and Technical Information of China (English)

    何谐; 唐大权; 张淑廷; 陈雪

    2014-01-01

    The hardware design method of the music player based on MCU STC12C5A60S2 is introduced in this paper. The program design of the music player based on principle of FAT32 file system is studied. In the music player, MCU STC12C5A60S2 is taken as a main controller,SD card as a memory medium of music files and VS1003 chip as a decoder unit. When the player is running,MCU STC12C5A60S2 reads the music file from the SD card and continuously transfers data flow to VS1003 for decoding. In the meantime,the OLED liquid crystal display shows the message of the music in real time. The tested results from experiments show the music player can play the music files in multiple formats fluently if the player is connected with ear phone.%主要介绍一种基于51单片机的音乐播放器的硬件设计方法,并研究在FAT32文件系统下音乐播放器的程序设计。该音乐播放器采用STC12C5A60S2单片机为主控制器,SD卡作为音乐文件的存储介质,VS1003芯片作为解码器。STC12C5A60S2单片机从 SD卡中读取音乐文件,并不断将数据流传送至VS1003解码,最后连接耳机播放,同时STC12C5A60S2连接OLED液晶显示屏实时显示音乐播放信息。实验表明,该音乐播放器连接耳机能流畅播放多种格式的音乐文件。

  5. Solvent hold tank sample results for MCU-15-815-816-817-818-819-820 November monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-01-25

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-815-816-817-818-819-820), pulled on 11/29/2015 for analysis. The samples were inspected, combined, and analyzed for composition. Chemical analysis of the composite sample MCU-15-815-816-817-818-819-820 indicated the TiDG, Isopar™L, and MaxCalix are at nominal levels. The modifier concentration is 3% below its nominal concentration. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent on November 28, 2015. Based on the current monthly sample, the levels of TiDG, Isopar™L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). However, up to 12.5 ± 3 micrograms of mercury per gram of solvent (or 10.4 μg/mL) was detected in this sample. The solids residues found at the bottom of the p-nut vial from sample MCU-15-815 were determined to be left-over pipe residues that were flushed into the sample and they were found to have no impact on the solvent purity or on the chemical and physical properties of the solvent. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.

  6. MCU and Wireless Interconnection in Age of Internet of Things%物联网时代的MCU与无线互联

    Institute of Scientific and Technical Information of China (English)

    沈建华

    2011-01-01

    In this paper, some personal views are presented about current situation of MCU, technical characteristics and wireless interconnection technology in the age of the Internet of things. The Internet of things brings about new and enormous opportunities to MCU applications. Low-power and wireless connectivity are the two trends of MCU applications in this age. Standards-based ZigBee and Wi\\Fi will have promising development and applications.%针对MCU现状和物联网时代的MCU技术特征与无线互联技术,谈了一些个人的看法.物联网时代给MCU应用带来了新的巨大机遇;低功耗和无线互联是物联网时代MCU应用的两大趋势;基于标准的ZigBee和Wi - Fi将会有很大的发展.

  7. Mitochondrial Ca2+ uptake 1 (MICU1) and mitochondrial ca2+ uniporter (MCU) contribute to metabolism-secretion coupling in clonal pancreatic β-cells.

    Science.gov (United States)

    Alam, Muhammad Rizwan; Groschner, Lukas N; Parichatikanond, Warisara; Kuo, Liang; Bondarenko, Alexander I; Rost, Rene; Waldeck-Weiermair, Markus; Malli, Roland; Graier, Wolfgang F

    2012-10-01

    In pancreatic β-cells, uptake of Ca(2+) into mitochondria facilitates metabolism-secretion coupling by activation of various matrix enzymes, thus facilitating ATP generation by oxidative phosphorylation and, in turn, augmenting insulin release. We employed an siRNA-based approach to evaluate the individual contribution of four proteins that were recently described to be engaged in mitochondrial Ca(2+) sequestration in clonal INS-1 832/13 pancreatic β-cells: the mitochondrial Ca(2+) uptake 1 (MICU1), mitochondrial Ca(2+) uniporter (MCU), uncoupling protein 2 (UCP2), and leucine zipper EF-hand-containing transmembrane protein 1 (LETM1). Using a FRET-based genetically encoded Ca(2+) sensor targeted to mitochondria, we show that a transient knockdown of MICU1 or MCU diminished mitochondrial Ca(2+) uptake upon both intracellular Ca(2+) release and Ca(2+) entry via L-type channels. In contrast, knockdown of UCP2 and LETM1 exclusively reduced mitochondrial Ca(2+) uptake in response to either intracellular Ca(2+) release or Ca(2+) entry, respectively. Therefore, we further investigated the role of MICU1 and MCU in metabolism-secretion coupling. Diminution of MICU1 or MCU reduced mitochondrial Ca(2+) uptake in response to d-glucose, whereas d-glucose-triggered cytosolic Ca(2+) oscillations remained unaffected. Moreover, d-glucose-evoked increases in cytosolic ATP and d-glucose-stimulated insulin secretion were diminished in MICU1- or MCU-silenced cells. Our data highlight the crucial role of MICU1 and MCU in mitochondrial Ca(2+) uptake in pancreatic β-cells and their involvement in the positive feedback required for sustained insulin secretion.

  8. 基于I2C总线的多MCU系统设计%Design of multi-MCU system based on I2C bus

    Institute of Scientific and Technical Information of China (English)

    李晶; 吕肖晗

    2015-01-01

    在一些应用系统中常常使用多片MCU协同实现系统功能,为实现多片MCU之间的数据交换,可以应用多端口RAM,但其结构复杂,成本高;而利用I2C总线使多片MCU之间通过RAM实现数据交换,具有结构简单、成本低的优点。介绍一种基于I2C总线的多MCU系统的设计,简要讨论I2C总线的结构、工作原理及多MCU竞争仲裁,给出I2C总线的多MCU系统的设计,实现了多MCU系统在实际中的应用。%System functions are implemented by multi⁃MCU collaborative working in some application systems. Although the multi⁃port RAM can be applied to achieve data exchange among multiple MCUs,its structure is complex and cost is high. Multi⁃MCU data exchange can be realized by the method to link I2C bus with RAM,which has the advantages of simple struc⁃ture and low cost. Design of the multi⁃MCU system based on I2C bus is introduced. The structure,execution principle,multi⁃MCU competition and arbitration of I2C bus are discussed briefly. The design of multi⁃MCU system based on I2C bus is given. The application of multi⁃MCU system in practice was implemented.

  9. Mobile contingency unit

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Sergio O. da; Magalhaes, Milton P. de [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil); Junqueira, Rodrigo A.; Torres, Carlos A.R. [PETROBRAS Transporte S/A (TRANSPETRO), Rio de Janeiro, RJ (Brazil)

    2009-07-01

    This paper is aimed at presenting what is already a reality in TRANSPETRO in the area covered by OSBRA, a pipeline that carries by-products to the Mid-West region of Brazil. In order to meet the needs of covering occasional accidents, TRANSPETRO counts on a standardized system of emergency management. It is a great challenge to secure an efficient communication along the 964 km of extension, considering that there are shadow zones where it is not possible to use conventional means of communication such as mobile telephony and internet. It was in this context that the Mobile Contingency Unit Via Satellite - MCU was developed, to extend the communication facilities existing in fixed installations to remote places, mainly the pipeline right of ways. In case of emergency, simulation and work in the pipeline right of way, MCU is fully able to provide the same data, voice, closed-circuit TV and satellite video conference facilities that are available in any internal area of the PETROBRAS system. (author)

  10. Ca2+ signals regulate mitochondrial metabolism by stimulating CREB-mediated expression of the mitochondrial Ca2+ uniporter gene MCU.

    Science.gov (United States)

    Shanmughapriya, Santhanam; Rajan, Sudarsan; Hoffman, Nicholas E; Zhang, Xueqian; Guo, Shuchi; Kolesar, Jill E; Hines, Kevin J; Ragheb, Jonathan; Jog, Neelakshi R; Caricchio, Roberto; Baba, Yoshihiro; Zhou, Yandong; Kaufman, Brett A; Cheung, Joseph Y; Kurosaki, Tomohiro; Gill, Donald L; Madesh, Muniswamy

    2015-03-03

    Cytosolic Ca2+ signals, generated through the coordinated translocation of Ca2+ across the plasma membrane (PM) and endoplasmic reticulum (ER) membrane, mediate diverse cellular responses. Mitochondrial Ca2+ is important for mitochondrial function, and when cytosolic Ca2+ concentration becomes too high, mitochondria function as cellular Ca2+ sinks. By measuring mitochondrial Ca2+ currents, we found that mitochondrial Ca2+ uptake was reduced in chicken DT40 B lymphocytes lacking either the ER-localized inositol trisphosphate receptor (IP3R), which releases Ca2+ from the ER, or Orai1 or STIM1, components of the PM-localized Ca2+ -permeable channel complex that mediates store-operated calcium entry (SOCE) in response to depletion of ER Ca2+ stores. The abundance of MCU, the pore-forming subunit of the mitochondrial Ca2+ uniporter, was reduced in cells deficient in IP3R, STIM1, or Orai1. Chromatin immunoprecipitation and promoter reporter analyses revealed that the Ca2+ -regulated transcription factor CREB (cyclic adenosine monophosphate response element-binding protein) directly bound the MCU promoter and stimulated expression. Lymphocytes deficient in IP3R, STIM1, or Orai1 exhibited altered mitochondrial metabolism, indicating that Ca2+ released from the ER and SOCE-mediated signals modulates mitochondrial function. Thus, our results showed that a transcriptional regulatory circuit involving Ca2+ -dependent activation of CREB controls the Ca2+ uptake capability of mitochondria and hence regulates mitochondrial metabolism.

  11. Image Acquisition System Based on FIFO Chip and MCU%FIFO芯片和单片机实现的图像采集系统

    Institute of Scientific and Technical Information of China (English)

    陈向春; 侯智斌; 张峰

    2012-01-01

    Based on FIFO chip AL422B, the paper takes Freescale 16 bit MCU MC9S12DG128 as the core, collects image information from camera chip OV7670 to realize the low rate MCU high speed image acquisition system. The system adopts the MCU control FIFO chip, the FIFO reads complete image information from camera at real time, and then MCU reads images from the FIFO corresponding register at low speed. At the same time the MCU processes the corresponding image in order to get the image point source pixel dis- tance, and the design acquires the next image by FIFO. The project meets the requirement through proto and ensures image integrity.%基于FIFO芯片AL422B,以飞思卡尔16位单片机MC9S12DG128为核心,采集摄像头芯片OV7670的图像信息,设计出以低速率的单片机采集高速率图像的图像采集系统。系统采用单片机控制FIFO芯片,先由FIFO实时读取摄像头芯片的一幅完整图像信息,再由单片机以低速率从FIFO的相应寄存器读取该幅图像,读取的同时进行相应的图像处理,得出所需图像中点光源的像素距离后通过FIFO进行下一幅图像的采集。本方案通过样机实验,完全能满足要求,确保了一副图像的完整性。

  12. Applying full multigroup cell characteristics from MCU code to finite difference calculations of neutron field in VVER core

    Energy Technology Data Exchange (ETDEWEB)

    Gorodkov, S.S.; Kalugin, M.A. [Nuclear Research Centre ' ' Kurchatov Institute' ' , Moscow (Russian Federation)

    2015-09-15

    Up to now core calculations with Monte Carlo provided only average cross-sections of mesh cells for further use either in finite difference calculations or as benchmark ones for approximate spectral algorithms. Now MCU code is capable to handle functions, which may be interpreted as average diffusion coefficients. Subsequently the results of finite difference calculations with cells characteristic sets obtained in such a way can be compared with Monte Carlo results as benchmarks, giving reliable information on quality of production code under consideration. As an example of such analysis, the results of mesh calculations with 1-, 2-, 4-, 8- and 12 neutron groups of some model VVER fuel assembly are presented in comparison with the exact Monte Carlo solution. As a second example, an analysis is presented of water gap approximate enlargement between fuel assemblies, allowing VVER core region be covered by regular mesh.

  13. Calculations of 3D full-scale VVER fuel assembly and core models using MCU and BIPR-7A codes

    Energy Technology Data Exchange (ETDEWEB)

    Aleshin, Sergey S.; Bikeev, Artem S.; Bolshagin, Sergey N.; Kalugin, Mikhail A.; Kosourov, Evgeniy K.; Pavlovichev, Aleksandr M.; Pryanichnikov, Aleksandr V.; Sukhino-Khomenko, Evgenia A.; Shcherenko, Anna I.; Shcherenko, Anastasia I.; Shkarovskiy, Denis A. [Nuclear Research Centre ' ' Kurchatov Institute' ' , Moscow (Russian Federation)

    2015-09-15

    Two types of calculations were made to compare BIPR-7A and MCU results for 3D full-scale models. First EPS (emergency protection system) efficiency and in-core power distributions were analyzed for an equilibrium fuel load of VVER-1000 assuming its operation within an 18-month cycle. Computations were performed without feedbacks and with fuel burnup distributed over the core. After 3D infinite lattices of full-scale VVER-1000 fuel assemblies (A's) with uranium fuel 4.4% enrichment and uranium-erbium fuel 4.4% enrichment and Er{sub 2}O{sub 3} 1 % wt were considered. Computations were performed with feedbacks and fuel burnup at the constant power level. For different time moments effective multiplication factor and power distribution were obtained. EPS efficiency and reactivity effects at chosen time moments were analyzed.

  14. Solvent hold tank sample results for MCU-15-802-803-804-805-806-807 August monthly sample

    Energy Technology Data Exchange (ETDEWEB)

    Fondeur, F. F. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Jones, D. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-01-01

    Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-802-803-804-805-806-807), pulled on 08/31/2015 for analysis. The samples were combined and analyzed for composition. Analysis of the composite sample MCU-15-802-803-804-805-806-807 indicated a low concentration (~ 45 % of nominal) of the suppressor (TiDG) and a slightly lower than nominal concentration of the modifier (Cs-7SB) in the solvent. The extractant (MaxCalix) concentration was at its nominal value. Based on this current monthly sample, the levels of TiDG, MaxCalix, and modifier were sufficient for continuing operation without adding a trim during that time but it is recommended that an addition of TiDG, modifier and Isopar™L should be made in the next few months. This monthly sample’s rheology, as determined by Hydrogen Nuclear Magnetic Resonance (H-NMR), is consistent with the rheology of the standard NGS solvent made in the lab (Scratch solvent 5/14/2014). No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). In addition, up to 16.7 micrograms of mercury per gram of solvent (or 14 μg/mL) was detected in this sample. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.

  15. The mitochondrial Ca2+ uniporter MCU is essential for glucose-induced ATP increases in pancreatic β-cells.

    Directory of Open Access Journals (Sweden)

    Andrei I Tarasov

    Full Text Available Glucose induces insulin release from pancreatic β-cells by stimulating ATP synthesis, membrane depolarisation and Ca(2+ influx. As well as activating ATP-consuming processes, cytosolic Ca(2+ increases may also potentiate mitochondrial ATP synthesis. Until recently, the ability to study the role of mitochondrial Ca(2+ transport in glucose-stimulated insulin secretion has been hindered by the absence of suitable approaches either to suppress Ca(2+ uptake into these organelles, or to examine the impact on β-cell excitability. Here, we have combined patch-clamp electrophysiology with simultaneous real-time imaging of compartmentalised changes in Ca(2+ and ATP/ADP ratio in single primary mouse β-cells, using recombinant targeted (Pericam or Perceval, respectively as well as entrapped intracellular (Fura-Red, probes. Through shRNA-mediated silencing we show that the recently-identified mitochondrial Ca(2+ uniporter, MCU, is required for depolarisation-induced mitochondrial Ca(2+ increases, and for a sustained increase in cytosolic ATP/ADP ratio. By contrast, silencing of the mitochondrial Na(+-Ca(2+ exchanger NCLX affected the kinetics of glucose-induced changes in, but not steady state values of, cytosolic ATP/ADP. Exposure to gluco-lipotoxic conditions delayed both mitochondrial Ca(2+ uptake and cytosolic ATP/ADP ratio increases without affecting the expression of either gene. Mitochondrial Ca(2+ accumulation, mediated by MCU and modulated by NCLX, is thus required for normal glucose sensing by pancreatic β-cells, and becomes defective in conditions mimicking the diabetic milieu.

  16. The mitochondrial Ca2+ uniporter MCU is essential for glucose-induced ATP increases in pancreatic β-cells.

    Science.gov (United States)

    Tarasov, Andrei I; Semplici, Francesca; Ravier, Magalie A; Bellomo, Elisa A; Pullen, Timothy J; Gilon, Patrick; Sekler, Israel; Rizzuto, Rosario; Rutter, Guy A

    2012-01-01

    Glucose induces insulin release from pancreatic β-cells by stimulating ATP synthesis, membrane depolarisation and Ca(2+) influx. As well as activating ATP-consuming processes, cytosolic Ca(2+) increases may also potentiate mitochondrial ATP synthesis. Until recently, the ability to study the role of mitochondrial Ca(2+) transport in glucose-stimulated insulin secretion has been hindered by the absence of suitable approaches either to suppress Ca(2+) uptake into these organelles, or to examine the impact on β-cell excitability. Here, we have combined patch-clamp electrophysiology with simultaneous real-time imaging of compartmentalised changes in Ca(2+) and ATP/ADP ratio in single primary mouse β-cells, using recombinant targeted (Pericam or Perceval, respectively) as well as entrapped intracellular (Fura-Red), probes. Through shRNA-mediated silencing we show that the recently-identified mitochondrial Ca(2+) uniporter, MCU, is required for depolarisation-induced mitochondrial Ca(2+) increases, and for a sustained increase in cytosolic ATP/ADP ratio. By contrast, silencing of the mitochondrial Na(+)-Ca(2+) exchanger NCLX affected the kinetics of glucose-induced changes in, but not steady state values of, cytosolic ATP/ADP. Exposure to gluco-lipotoxic conditions delayed both mitochondrial Ca(2+) uptake and cytosolic ATP/ADP ratio increases without affecting the expression of either gene. Mitochondrial Ca(2+) accumulation, mediated by MCU and modulated by NCLX, is thus required for normal glucose sensing by pancreatic β-cells, and becomes defective in conditions mimicking the diabetic milieu.

  17. Matrix sun sensor design with MCU%基于单片机的矩阵式太阳敏感器设计

    Institute of Scientific and Technical Information of China (English)

    仉英旭; 徐涛; 刘其然

    2016-01-01

    Matrix type sun sensor system is a sensitive system with high precision, high measurement information and fast processing. In this paper, the designed matrix sun sensor using photo-resistors as the sensitive element, the photo-resistors are arranged in a 4 × 4 matrix, the slit type optical head is used to acquire the digital information of two-axis attitude angle; The ADC0809 converts the analog signals to digital signals; The microcontroller unit (MCU) STC89C52 is used to process the signal and output the sensing results to LCD unit. Meanwhile, the results are transferred to the PC by serial port. The experimental results show that the sun sensor has a certain precision, can meet the sun's angle measurement in a certain range.%矩阵式太阳敏感器系统是精度高、测量信息量大并能快速处理的敏感系统。文章设计的矩阵式太阳敏感器,利用光敏电阻作为敏感元件,将光敏电阻排列成4×4矩阵,采用狭缝式光学头部,同时采集到两个轴姿态夹角的数字信息;利用ADC0809对光敏电阻的信号进行模数转换,由单片机STC89C52实现数据的采集和处理,将结果在LCD液晶显示器显示,同时通过串口将结果传输到上位机。实验结果表明,该太阳敏感器具有一定的精度,在一定范围内能够满足太阳的角度测量。

  18. linical Effect Observation of MCu Memory Alloy Intrauterine Device%放置MCu记忆合金宫内节育器临床效果观察

    Institute of Scientific and Technical Information of China (English)

    王玲; 张蕊

    2016-01-01

    目的:探讨观察MCu记忆合金宫内节育器临床使用情况。方法方便选择于2012年2月—2014年12月在山东省烟台市计划生育指导中心自愿放置MCu记忆合金宫内节育器的受试者400例,进行临床效果观察。结果 MCu记忆合金宫内节育器,置器18个月MCuIUD避孕率为99.75%;不良反应发生率3个月时13.5%,18个月后降至0%。累计移位率1.25%,脱落率0.25%;累计续用率为96.25%。结论 MCu记忆合金宫内节育器,避孕有效率高、因症取出及不良反应发生率低,操作便捷,在临床使用中安全高效值得推广使用。%Objective To investigate the clinical use of MCu memory alloy intrauterine device. Methods Convenient selec-tion 400 cases of MCu memory alloy intrauterine device in Yantai City, Shandong Province, family planning guidance center from February 2012 to December 2014 years old were selected, and the clinical effect was observed. Results MCu memory alloy intrauterine device, the device for 18 months MCuIUD contraceptive rate was 99.75%; the incidence of adverse reac-tions was 3 months, 18, 13.5% months after the 0%. The cumulative displacement rate was 1.25%, and the shedding rate was 0.25%. The cumulative rate was 96.25%. Conclusion MCu memory alloy intrauterine device, the effective rate of con-traception, and the incidence of adverse drug reaction rate is low, the operation is convenient, safe and effective in clinical use is worthy of popularization and use.

  19. Develoment of Controller in Hybrid Electric Vehicle Based on MCU TC1766%基于TC1766的混合动力汽车整车控制器的开发

    Institute of Scientific and Technical Information of China (English)

    邴甲晨; 王旭东; 吴晓刚

    2011-01-01

    This paper introduces that a kind of hybrid control unit of hybrid electric vehicle is developed, it is based on the MCU of TC1766. The design of the hardware and EMC of functional modules are explained. Function experiments are taken in the vehicle and fuel emissions laboratory, it shows that the hybrid control unit in this paper has a good control quality and can meet requirements in vehicle dynamic quality, economy and environmental protection.%开发了一种并联式混合动力汽车的整车控制器,以英飞凌32位单片机TC1766为微控制器,阐述了各个功能模块的硬件实现以及系统电磁兼容设计,在排放实验室进行了车载整车功能和性能试验.试验表明开发的整车控制器具备良好的控制品质,可满足混合动力汽车的动力、经济和环保要求.

  20. [Medical care unit -- a suitable instrument for ambulatory patient-adequate care and performance-related remuneration].

    Science.gov (United States)

    Rudolph, P; Isensee, D; Gerlach, E; Gross, H

    2013-02-01

    The question of whether a medical care unit is an appropriate tool for outpatient care has been discussed for a long time. Our aim is to investigate whether the MCU is an effective instrument for outpatient care and adequate performance-related remuneration. This retro- and prospective overview of the work included statements on legal foundations for medical care units, for reimbursement of services in medical care units, the development of medical care centres in Germany and a listing of the specific advantages and disadvantages of an MCU. This article focuses on the generally applicable facts and complements them with examples from general, visceral and vascular surgery. The main quantitative data on medical centre statistics come from different publications of the National Association of Statutory Health Insurance for Physicians. From a legal point of view the instrument MCU allows the participating of ambulatory and stationary care in the framework of medical care contracts. This has been especially extended for stationary applications, including the spectrum of possibilities that can contribute under certain circumstances for the provision of medical care in underdeveloped regions. Freelancers can benefit primarily from financial risk and minimising bureaucratic routine. The remuneration for services performed in the MCU is analogous to that of other ambulatory care providers. Basically, there are no disadvantages, but a greater design freedom and opportunities for the generation of aggregates are visible. The number of MCU in Germany has quadrupled in the last five years, indicating an establishment of an outpatient care landscape. MCU offers from the patient's perspective, providers and policy specific advantages and disadvantages. Indeed the benefits outweigh the disadvantages, but this is not yet verified by qualitative studies. The question of the appropriateness of medical care units as outpatient care instrumentation must be considered differentially

  1. Design of MCU+GSM-based remote control system for full automatic rice cooker%基于MCU+GSM的全自动电饭锅远程智能控制系统

    Institute of Scientific and Technical Information of China (English)

    刘天成; 田学军; 许景生

    2013-01-01

    为了实现电饭锅的远程智能控制,设计了一种基于MCU+GSM的由机械和控制电路组成的控制系统。机械部分由储米、取米、淘米、放米以及加水等装置组成,而控制电路由GTM900C模块、MSP430模块、状态检测与控制模块3部分组成。系统用GTM900C发送和接收短信,用单片机MSP430F149控制电饭锅工作。此外对传统电饭锅进行了改造,以实现电饭锅的全自动化。实验调试结果表明,该系统运行稳定,数据传输可靠,能较好地实现电饭锅的远程智能控制,具有广阔的应用前景。%A MCU+GSM-based control system that mainly consists of mechanism and control circuit was designed to realize remote intelligent control of rice cooker. The mechanism is made up of rice-storage box,rice-taking equipment,rice-washing equipment,rice-putting equipment and water-adding equipment. The control circuit is composed of modules of GTM900C, MSP430,state detection and control. GTM900C is used in the system to send and receive SMS,and MSP430 is used to control rice cooker. Besides,the traditional rice cooker was improved to realize the automation. The experiment debugging shows that the system runs stably,can transfer data reliablely,has a bright application prospect,and can realize remote intelligent control of rice cooker.

  2. Proteus和Keil软件在单片机项目式教学中的应用%Application of Proteus and Keil in MCU project teaching

    Institute of Scientific and Technical Information of China (English)

    赖忠喜; 林君焕; 陶东娅

    2013-01-01

    针对单片机项目式教学中出现的问题,提出了将Proteus仿真软件和Keil软件引入到单片机项目式教学中.以”简易温室监控系统”项目为例,详细阐述Proteus软件和Keil软件在单片机课程教学中的使用方法和仿真调试过程.实践证明,该教学方法能激发学生学习的热情,锻炼了学生的创新能力和单片机软硬件综合开发能力,取得了良好的教学效果,是提高单片机教学效率和教学质量的一种有效方法.%Aimed at the problems appearing in MCU project teaching, this paper proposed that introducing Proteus simulation software and Keil software into MCU project teaching. Taking the simple Greenhouse monitoring System as an example, The application method and simulation debugging process of Proteus and Keil softwares using in the course teaching of MCU were expounded. It was proven that the teaching method aroused the learning enthusiasm of the students, cultivated the students' creative ability and comprehensive ability of hardware and software development And much better teaching effect had been achieved. It is an effective method to improve the quality and efficiency of MCU teaching.

  3. Evaluation of structural deformations of a mechanical connecting unit oxidizer supplies by thermo-mechanical simulation

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Sang Woo [Dept. of Mechanical Engineering, Institute of Machine Convergence Technology, Hankyong National University, Anseong (Korea, Republic of)

    2016-10-15

    A Mechanical connecting unit (MCU) used in ground facilities for a Liquid propellant rocket (LPR) acts as a bridge between the onboard system and the ground oxidizer filling system. It should be resistant to structural deformations in order to guarantee successful supply of a cryogenic oxidizer and high pressure gases without reduction of sealing capability. The MCU consists of many components and linkages and operates under harsh conditions induced by a cryogenic oxidizer, high pressure gases and other mechanical forces. Thus, the evaluation of structural deformation of the MCU considering complex conditions is expensive and time consuming. The present study efficiently evaluates the structural deformations of the key components of the MCU by Thermo-mechanical simulation (TMS) based on the superposition principle. Deformations due to the mechanical loadings including weights, pressures, and spring forces are firstly evaluated by using a non-linear flexible body simulation module (FFlex) of Multi-body dynamics (MBD) software, RecurDyn. Then, thermal deformations for the deformed geometries obtained by RecurDyn were subsequently calculated. It was conducted by using a Finite element (FE) analysis software, ANSYS. The total deformations for the onboard plate and multi-channel plate in the connecting section due to the mechanical and thermal loadings were successfully evaluated. Moreover, the outer gaps at six points between two plates were calculated and verified by comparison to the measured data. Their values and tendencies showed a good agreement. The author concluded that the TMS using MBD software considering flexible bodies and an FE simulator can efficiently evaluate structural deformations of the MCU operating under the complex load and boundary conditions.

  4. 基于微型开发板的单片机教学模式探索%Exploration of MCU Teaching Based on Development Board

    Institute of Scientific and Technical Information of China (English)

    张守峰

    2014-01-01

    The problems are analyzed about training room construction ,equipment operation and maintenance .They can be effectively solved by using MCU development board and Proteus simulation software during teaching .This can improve MCU learning effect .The student and dorm classmates can study together with laptop and MCU development board in spare time .This can raised autonomous learning and team cooperation ability ,improve the effect of the microcontroller learning .%针对单片机教学中实训室建设、实验设备使用和维护方面存在的问题,开发了运用单片机开发板和Proteus仿真软件代替综合实验板。它可有效解决目前单片机教学中存在的许多问题。教学中以小组为单位,以项目为载体,采用理实一体化教学模式;课余时间结合个人笔记本电脑和单片机开发板学习。既培养了自主学习和团队合作能力,又提高了单片机学习效果。

  5. Expression of mRNA Encoding Mcu and Other Mitochondrial Calcium Regulatory Genes Depends on Cell Type, Neuronal Subtype, and Ca2+ Signaling.

    Science.gov (United States)

    Márkus, Nóra M; Hasel, Philip; Qiu, Jing; Bell, Karen F S; Heron, Samuel; Kind, Peter C; Dando, Owen; Simpson, T Ian; Hardingham, Giles E

    2016-01-01

    Uptake of Ca2+ into the mitochondrial matrix controls cellular metabolism and survival-death pathways. Several genes are implicated in controlling mitochondrial Ca2+ uptake (mitochondrial calcium regulatory genes, MCRGs), however, less is known about the factors which influence their expression level. Here we have compared MCRG mRNA expression, in neural cells of differing type (cortical neurons vs. astrocytes), differing neuronal subtype (CA3 vs. CA1 hippocampus) and in response to Ca2+ influx, using a combination of qPCR and RNA-seq analysis. Of note, we find that the Mcu-regulating Micu gene family profile differs substantially between neurons and astrocytes, while expression of Mcu itself is markedly different between CA3 and CA1 regions in the adult hippocampus. Moreover, dynamic control of MCRG mRNA expression in response to membrane depolarization-induced Ca2+ influx is also apparent, resulting in repression of Letm1, as well as Mcu. Thus, the mRNA expression profile of MCRGs is not fixed, which may cause differences in the coupling between cytoplasmic and mitochondrial Ca2+, as well as diversity of mitochondrial Ca2+ uptake mechanisms.

  6. Expression of mRNA Encoding Mcu and Other Mitochondrial Calcium Regulatory Genes Depends on Cell Type, Neuronal Subtype, and Ca2+ Signaling.

    Directory of Open Access Journals (Sweden)

    Nóra M Márkus

    Full Text Available Uptake of Ca2+ into the mitochondrial matrix controls cellular metabolism and survival-death pathways. Several genes are implicated in controlling mitochondrial Ca2+ uptake (mitochondrial calcium regulatory genes, MCRGs, however, less is known about the factors which influence their expression level. Here we have compared MCRG mRNA expression, in neural cells of differing type (cortical neurons vs. astrocytes, differing neuronal subtype (CA3 vs. CA1 hippocampus and in response to Ca2+ influx, using a combination of qPCR and RNA-seq analysis. Of note, we find that the Mcu-regulating Micu gene family profile differs substantially between neurons and astrocytes, while expression of Mcu itself is markedly different between CA3 and CA1 regions in the adult hippocampus. Moreover, dynamic control of MCRG mRNA expression in response to membrane depolarization-induced Ca2+ influx is also apparent, resulting in repression of Letm1, as well as Mcu. Thus, the mRNA expression profile of MCRGs is not fixed, which may cause differences in the coupling between cytoplasmic and mitochondrial Ca2+, as well as diversity of mitochondrial Ca2+ uptake mechanisms.

  7. The Ca(2+)-Dependent Release of the Mia40-Induced MICU1-MICU2 Dimer from MCU Regulates Mitochondrial Ca(2+) Uptake.

    Science.gov (United States)

    Petrungaro, Carmelina; Zimmermann, Katharina M; Küttner, Victoria; Fischer, Manuel; Dengjel, Jörn; Bogeski, Ivan; Riemer, Jan

    2015-10-01

    The essential oxidoreductase Mia40/CHCHD4 mediates disulfide bond formation and protein folding in the mitochondrial intermembrane space. Here, we investigated the interactome of Mia40 thereby revealing links between thiol-oxidation and apoptosis, energy metabolism, and Ca(2+) signaling. Among the interaction partners of Mia40 is MICU1-the regulator of the mitochondrial Ca(2+) uniporter (MCU), which transfers Ca(2+) across the inner membrane. We examined the biogenesis of MICU1 and find that Mia40 introduces an intermolecular disulfide bond that links MICU1 and its inhibitory paralog MICU2 in a heterodimer. Absence of this disulfide bond results in increased receptor-induced mitochondrial Ca(2+) uptake. In the presence of the disulfide bond, MICU1-MICU2 heterodimer binding to MCU is controlled by Ca(2+) levels: the dimer associates with MCU at low levels of Ca(2+) and dissociates upon high Ca(2+) concentrations. Our findings support a model in which mitochondrial Ca(2+) uptake is regulated by a Ca(2+)-dependent remodeling of the uniporter complex.

  8. 基于MCUIP核的SPI接口ASIC设计及实现%ASIC design and implementation of SPI interface of MCU

    Institute of Scientific and Technical Information of China (English)

    苏伟禄; 施隆照

    2011-01-01

    本文介绍了SPI接口的工作原理,详细阐述了该接口工作于主机、从机时各种工作方式下的设计要点、设计思路以及验证过程和结果。用VerilogHDL的可综合语法实现SPI功能描述,用ModelSim进行功能仿真来保证符合设计要求。将SPI模块嵌入到单片机(MCU)中并下载到Xilinx公司的FPGA板VIRTEX-IIPRO系列的xc2vp30-ff89上,利用外围电路与具有SPI接口的PIC单片机、STC单片机与FLASH存储器进行各种模式下的通信测试。硬件验证结果表明所设计MCU的SPI接口虽然在具体实现方式上与其他器件可能有所差异,但是完全符合SPI协议。另外,本文介绍了基于MCU的SOC系统采用基于标准单元的方法进行ASIC设计的流程和结果以及用Design compiler单独对SPI模块综合的结果。%This paper firstly introduces the basic principle of SPI interface of MCU , then presents the designdifficulties, design idea and the process and results of verification of it in detail. Hardware description language verilog was used to describe SPI interface of MCU using the synthesizable syntax part and modelsim was used as the function simulation tool to ensure SPI interface designed meet the requirement. And it communicates with PIC microcontrollers, STC microcontrollers and flash memory chips all of which have SPI interface by downloading the whole MCU system with SPI interface into Xilinx' s FPGA device xc2vp30-ff89 of VIRTEX-II PRO series and using peripheral circuits. Hardware verification shown that the SPI interface of MCU IP core we design is in accordance with SPI protocol, although maybe it is different from others SPI devices in the concrete implementations of them. In addition, the paper presents the ASIC design flow and results of soc system based on MCU using method of standard cells and the synthesis results of SPI module using Design compiler.

  9. Wearable Medical Devices' MCU Selection Analysis Based on the ARM Cortex-M0+ Architecture%基于ARM Cortex-M0+内核的穿戴式医疗设备MCU选型分析

    Institute of Scientific and Technical Information of China (English)

    吴灶全; 刘梦星; 秦丽平; 叶树明; 陈杭

    2015-01-01

    According to the characteristics of low cost, high performance, high integration and long battery life of wearable medical devices, the mainstream low-power microcontroler(MCU) series were compared, and came to the conclusion that the MCU series based on ARM Cortex-M0+ architecture were suitable for the development of wearable medical devices. In aspects of power consumption, operational performance, integrated peripherals and cost, the MCU series based on Cortex-M0+ architecture of primary semiconductor companies were compared, aimed at providing the guides of MCU selection for wearable medical devices.%根据穿戴式医疗设备低成本、高性能、高集成度和续航时间长的特点,对比了当前主流的低功耗微控制器(MCU)系列,分析得出ARM? Cortex M0+内核的MCU系列适合该领域的产品开发.在功耗水平、运算性能、外设集成和产品成本等方面,进一步将各大半导体公司基于Cortex M0+内核的MCU系列展开参数对比,为穿戴式医疗设备的MCU选型提供指南.

  10. Evaluation of Contraceptive Effects of Inserting New Type Intrauterine Devices Including Gynefix, MCu and TCu220 Immediately after Induced Abortion%人工流产术后即时放置GyneFix IUD、MCu IUD和TCu220 IUD避孕效果分析

    Institute of Scientific and Technical Information of China (English)

    楼芝英; 乐园罗

    2007-01-01

    目的:评价新型宫内节育器(IUD)GyneFix IUD和MCu IUD及传统节育器TCu220 IUD的避孕效果.方法:以人工流产术后志愿放置IUD的690例为对象,随机分为3组,分别于人工流产术后即时放置Gyne Fix IUD、MCu IUD和TCu220 IUD. 结果:GyneFix IUD,MCu IUD和TCu220 IUD使用12个月带器妊娠率分别为0.48%、0.85%、3.75%,脱落率分别为0.93%、0.85%、2.92%,因症取出率分别为2.80%、3.81%、6.25%,续用率分别为95.80%,94.49%,87.08%,放置IUD后月经异常发生率分别为8.88 % 、5.93% 、12.5 %. 结论:GyneFix IUD、MCu IUD和TCu220 IUD避孕效果均较理想,但TCu220 IUD可能是放置型号不易掌握,带器妊娠、脱落、月经异常发生率较两种新型IUD高.

  11. 基于单片机的水温控制系统%Temperature Control System based on MCU

    Institute of Scientific and Technical Information of China (English)

    贺廉云

    2015-01-01

    系统采用数字式DS18B20作为温度传感器,由单片机电路、温度采集电路、键盘电路、LED显示电路等构成系统的硬件部分,并给出了软件系统框图,可通过软件编程实现控制算法。单片机通过温度传感器对水温进行检测与预警,进而实现对水温的控制。该系统集数据采集、显示、控制、处理于一体。系统简易实用,可靠性强,拓展方便。%This system uses the digital temperature sensor DS18B20 as a temperature sensor, and the system hardware is composed of MCU circuit, temperature measurement circuit, keyboard circuit, LED display circuit.Based on the aboved, the software system block diagram is also given, and control algorithm can be realized through software programming.SCM system could detect and warn the water temperature by the temperature sensor so as to realize the temperature control.The system is a set of application equipment with integration of data collection, display, control, processing.The system is sim-ple and practical, reliability and easy to expand.

  12. Design and implementation of HBD3 coder/decoder based on MCU%基于单片机的HDB3编/译码器的设计与实现

    Institute of Scientific and Technical Information of China (English)

    林战平

    2013-01-01

    介绍了一种基于单片机的HDB3编/译码器的设计.以常用的51系列单片机为核心,结合外围电路,实现了HDB3编/译码器的功能.在单片机应用系统之间的数字基带通信中,具有一定的应用前景.%This paper introduced a design of HDB3 coder/decoder based on MCU.Frequently-used 51 MCU as core,combine peripheral circuit,achieve the function of HDB3 coder/decoder.It has certain application prospect in digital baseband communication between MCU application systems.

  13. Design and realization of digital audio equalizer based on MCU and FPAA

    Institute of Scientific and Technical Information of China (English)

    Zhou Ping; Liu Zhuo; Xia Liang

    2008-01-01

    In analog audio equalizer, the filters are constructed by op-amplifiers and discrete components. Being influenced by its discrete capabilities, audio equalizer has many disadvantages. Meanwhile, pure digital audio equalizer has got better performance and stability, but its cost and price are too high. So digital audio equalizer only has its application in upscale domain. A new design method for audio equalizer is proposed, which attempts to design and realize a high precision and high SNR (signal noise ratio) digital audio equalizer system based on field programmable analog array (FPAA) and micro-controller unit. This design confirms that design speed and performance will be greatly enhanced when FPAA technology is applied to analog design domain.

  14. Patients' experiences of receiving chemotherapy in outpatient clinic and/or onboard a unique nurse-led mobile chemotherapy unit: a qualitative study.

    Science.gov (United States)

    Mitchell, T

    2013-07-01

    There is a drive in the UK to revise chemotherapy provision for people living in rural communities. Using a different model of treatment delivery might impact positively upon the experience of receiving chemotherapy. In 2007 the first nurse-led mobile chemotherapy unit (MCU) in the UK was launched in the South West of England with the intention of providing treatment closer to home. The aim of the research was to explore experiences of people with cancer who received chemotherapy treatment in outpatient clinic and/or onboard the MCU using an interpretive phenomenological approach. Interviews were conducted with 20 people and data were interpreted using thematic analysis. The cancer and chemotherapy journey was described as being undertaken by the participant and their significant other. Available car parking and travelling impacted upon quality of life, as did the environment and accessibility of nurses to discuss issues with participants. The most important, distinguishing feature between receiving chemotherapy in outpatient clinic and the MCU was the amount of time spent waiting. Having treatment on the MCU was perceived to be less formal and therefore less stressful. Participants reported significant savings in time spent travelling, waiting and having treatment, expenditure on fuel and companion costs.

  15. Connection of PS/2 Standard Keyboard and MCU%PS/2标准键盘与单片机的连接

    Institute of Scientific and Technical Information of China (English)

    邬法磊; 李晓阳; 尘源

    2012-01-01

    分析了PS/2标准键盘的通信协议,阐述了其编码的扫描原理,提出了51单片机与PS/2键盘的接口设计,并通过LCD1602显示了键盘的输入情况。%This paper analyzes the communication protocol of PS/2 standard keyboard and describes the encoding of the scanning principle.Besides,the paper also introduces the interface design of 51 MCU and PS/2 keyboard and displays how the keyboard inputs by using 1602 LCD.

  16. Design of an MCU-controlled laser liquid turbidimeter based on OPT101

    Science.gov (United States)

    Liu, Yang; Xu, Huiying

    2009-11-01

    With the rapid development of industry, accurate detection of liquid turbidity has attracted more and more attention, and been widely applied to many industries. According to the Mie scattering and the Rayleigh scattering law, this paper presents a novel design of laser liquid turbidimeter which uses the method of determining the turbidity by means of detecting the 90° scattered light. The entire detection system mainly consists of a 650nm red laser source, a light receiver (OPT101) and photoelectric conversion devices, an A/D converter, a data processing and controlling unit, a screen display device (LCD) and a power supply module. This turbidimeter is proved to be an intelligent instrument, which makes the process of measuring greatly simplified by displaying the result of turbidity in a digital form directly. It operates normally at a temperature range from 0 oC to 50 oC . From 0 NTU to 1000 NTU, the measuring ranges can be adjusted in accordance with the situation of samples automatically, and a single measurement takes about 1.608 ms. A high precision of 0.001 NTU is realized in our experiments. After repeated measurements, an average error of +/-2.2% is obtained, and the repeatability is less than 1%. Moreover, two measuring modes are provided, one can store and view the measuring records repeatedly, while the other can be used for batch testing with an additional alarm device. This turbidimeter possesses a good practicality either in laboratory measurement or in industrial and environmental inspection.

  17. 基于 MCU 的太阳能最大功率跟踪系统设计%System design of solar maximum power point tracking based on MCU

    Institute of Scientific and Technical Information of China (English)

    马帅旗; 王柯; 李计谋

    2013-01-01

    为了提高太阳能电池板的输出功率,以Freescale Kinetis MK60 DN512 ZVLQ10(内核ARM Cortex-M4)单片机为核心控制器,设计了一套太阳能最大功率跟踪系统。通过九轴姿态传感器( L3 G4200 D+ADXL345+HMC5883 L)测量到电池板的旋转姿态,利用卡尔曼滤波融合算法估计光敏传感器和太阳轨迹法计算获得的方位角和高度信息,通过双轴云台驱动电池板,使电池板工作于最大功率点附近。利用VB软件编写上位机软件,实现与单片机之间无线通信功能,完成系统状态监控和数据记录功能。实验结果表明,该设计能有效提高太阳能电池板的输出功率,具有一定的实用价值。%In order to improve the output power of the solar battery board , the MPPT system was de-signed using Freescale Kinetis MK60DN512ZVLQ10 (kernel ARM Cortex-M4) as controller.The nine axis attitude sensor ( L3 G4200 D+ADXL345+HMC5883 L) was used in measure rotation attitude , and Kalman fu-sion algorithms was used to estimation azimuth and elevation according to results of photosensitive sensor and calculation.PV cell was driven by 2-DOF pan-tilt, which makes PV cell work around the maximum power point .PC can communicate with MCU through wireless module , and can monitor and record PV cell .Experi-ments show that the maximum power tracking algorithm can effectively increase the output power of the PV cell, also it has some practical value .

  18. ControI Syste m for Air Purifier Based on AVR MCU%基于 AVR 单片机的空气净化器控制系统

    Institute of Scientific and Technical Information of China (English)

    姜建国; 田金艳; 安昊盈

    2015-01-01

    The AVR MCU-based control system for the indoor air purifier was designed,and its hardware and software design was expounded.%以 AVR 单片机为控制器,设计室内空气净化器控制系统,详述了硬件和软件部分的设计。

  19. An Investigation of Collisions between Fiber Positioning Units in LAMOST

    CERN Document Server

    Liu, Xiao-Jie

    2015-01-01

    The arrangement of the fiber positioning units in LAMOST focal plane may lead to the collisions during the fiber allocation. To avoid these collisions, the soft protection system has to abandon some targets located in the overlapped field of the adjacent fiber units. In this paper, we firstly analyzed the probability of the collisions between fibers and inferred their possible reasons. It is useful to solve the problem of the fiber-positioning units collisions so as to improve LAMOST efficiency. Based on it, a collision handling system is designed by using the master-slave control structure between the micro control unit (MCU) and the microcomputer. The simulated experiments validate that the system can provide real-time inspection and swap the information between the fiber unit controllers and the main controller.

  20. Asynchronous Pipeline Micro—Control—Unit (MCU) Chip Design

    Institute of Scientific and Technical Information of China (English)

    ZHOUQian; XUKe; MINHao

    2003-01-01

    The work of this paper includes a researchon asynch ronous design methodology, and a design and implementation of an asynchronous 8-Bit micro-control-unit (MCU). This paper introduces a new application of New-Instruction-Fetching method to detect new instruc-tion which makes this chip fit for demand changeable sys-tem. The instruction set of this asynchronous MCU is compatible with PIC16C6X (Sicrochip Technology Inc).This paper also introduces a new architecture of pipeline,which increases the average speed of chip operation. The asynchronous low power MCU has been fabricated with CSMC (central semiconductor manufacturing corporation)0.6μm CMOS process in Aug 2001. The chip size is about 1.60mm*2.00mm (without taking account of PAD size).Now the test work has been accomplished and the test-ing result of this chip is also presented. The testing result shows that the asynchronous architecture could fulfill all the expected functions, additionally with higher processs peed and lower power consumption than its synchronous counterpart under the same supply voltage.

  1. 基于PIC单片机的直流无刷电机驱动控制器%Brushless DC Motor Controller Based on PIC MCU

    Institute of Scientific and Technical Information of China (English)

    吕仲军; 刘泽潮

    2014-01-01

    介绍了一种基于PIC18Fxx单片机的直流无刷电机的控制器;实现了电机的过流保护、欠压保护、PWM调速和速度闭环控制;设计了主要的硬件电路;并给出了部分软件流程图。通过实验与仿真验证了系统的可靠性与稳定性。%This paper introduces a brushless DC motor controller based on the PIC 18Fxx MCU.The Motor Hall signal acquisition , overcurrent protection , undervoltage protection , PWM speed control and speed closed-loop control are realized .The main hardware circuit and the flowchart of software are designed .The reliability and stability of the system is verified by experiment and simulation .

  2. Experimental investigation of neutronic characteristics of the IR-8 reactor to confirm the results of calculations by MCU-PTR code

    Energy Technology Data Exchange (ETDEWEB)

    Surkov, A. V., E-mail: surkov.andrew@gmail.com; Kochkin, V. N.; Pesnya, Yu. E.; Nasonov, V. A.; Vihrov, V. I.; Erak, D. Yu. [National Research Center Kurchatov Institute (Russian Federation)

    2015-12-15

    A comparison of measured and calculated neutronic characteristics (fast neutron flux and fission rate of {sup 235}U) in the core and reflector of the IR-8 reactor is presented. The irradiation devices equipped with neutron activation detectors were prepared. The determination of fast neutron flux was performed using the {sup 54}Fe (n, p) and {sup 58}Ni (n, p) reactions. The {sup 235}U fission rate was measured using uranium dioxide with 10% enrichment in {sup 235}U. The determination of specific activities of detectors was carried out by measuring the intensity of characteristic gamma peaks using the ORTEC gamma spectrometer. Neutron fields in the core and reflector of the IR-8 reactor were calculated using the MCU-PTR code.

  3. Semiconductor plasmon induced upconversion enhancement in mCu2-xS@SiO2@Y2O3:Yb(3+),Er(3+) core-shell nanocomposites.

    Science.gov (United States)

    Zhou, Donglei; Li, Dongyu; Zhou, Xiangyu; Xu, Wen; Chen, Xu; Liu, Dali; Zhu, Yongsheng; Song, Hongwei

    2017-09-18

    The ability to modulate the intensity of electromagnetic field by semiconductor plasmon nanoparticles is becoming attractive owing to its unique doping induced local surface plasmon resonance (LSPR) effect different from metals. Herein, we synthesized the mCu2-xS@SiO2@Y2O3:Yb(3+),Er(3+) core-shell composites and experimentally and theoretically studied the semiconductor plasmon induced upconversion (UC) enhancement, and obtained 30 folds UC enhancement compared to that of SiO2@Y2O3:Yb(3+),Er(3+) composites. The UC enhancement was induced by the synthetic effect: amplification of excitation field and the increase of resonance energy transfer (ET) rate from Yb(3+) ions to Er(3+) ions. The experimental results were analyzed in the light of FDTD calculations confirming the effect of amplification of excitation field. In addition, UCL spectra, UC enhancement and dynamics dependent on concentration (Yb(3+)/Er(3+) ions) were investigated and found that the resonance energy transfer (ET) rate from Yb(3+) ions to Er(3+) ions increased ~25% in the effect of LSPR waves. Finally, power dependence of fingerprint identification was successfully performed based on the mCu2-xS@SiO2@Y2O3:Yb(3+),Er(3+) core-shell composites, the color of which can change from green to orange with excitation power increasing. Our work opens up a new concept to design and fabricate the upconversion core-shell structure based on semiconductor plasmon nanoparticles (NPs) and provides applications for upconversion nanocrystals (UCNPs) and semiconductor plasmon NPs in photonics.

  4. Next Generation Solvent Development for Caustic-Side Solvent Extraction of Cesium

    Energy Technology Data Exchange (ETDEWEB)

    Moyer, Bruce A. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Birdwell, Joseph F. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Bonnesen, Peter V. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Bruffey, Stephanie [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

    2014-03-01

    This report summarizes the FY 2010 and 2011 accomplishments at Oak Ridge National Laboratory (ORNL) in developing the Next Generation Caustic-Side Solvent Extraction (NG-CSSX) process, referred to commonly as the Next Generation Solvent (NGS), under funding from the U.S. Department of Energy, Office of Environmental Management (DOE-EM), Office of Technology Innovation and Development. The primary product of this effort is a process solvent and preliminary flowsheet capable of meeting a target decontamination factor (DF) of 40,000 for worst-case Savannah River Site (SRS) waste with a concentration factor of 15 or higher in the 18-stage equipment configuration of the SRS Modular Caustic-Side Solvent Extraction Unit (MCU). In addition, the NG-CSSX process may be readily adapted for use in the SRS Salt Waste Processing Facility (SWPF) or in supplemental tank-waste treatment at Hanford upon appropriate solvent or flowsheet modifications. Efforts in FY 2010 focused on developing a solvent composition and process flowsheet for MCU implementation. In FY 2011 accomplishments at ORNL involved a wide array of chemical-development activities and testing up through single-stage hydraulic and mass-transfer tests in 5-cm centrifugal contactors. Under subcontract from ORNL, Argonne National Laboratory (ANL) designed a preliminary flowsheet using ORNL cesium distribution data, and Tennessee Technological University confirmed a chemical model for cesium distribution ratios (DCs) as a function of feed composition. Inter laboratory efforts were coordinated with complementary engineering tests carried out (and reported separately) by personnel at Savannah River National Laboratory (SRNL) and Savannah River Remediation (SRR) with helpful advice by Parsons Engineering and General Atomics on aspects of possible SWPF implementation.

  5. Next Generation Solvent (NGS): Development for Caustic-Side Solvent Extraction of Cesium

    Energy Technology Data Exchange (ETDEWEB)

    Moyer, Bruce A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Birdwell, Jr, Joseph F. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Bonnesen, Peter V. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Bruffey, Stephanie H. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Delmau, Laetitia Helene [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Duncan, Nathan C. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Ensor, Dale [Tennessee Technological Univ., Cookeville, TN (United States); Hill, Talon G. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Lee, Denise L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Rajbanshi, Arbin [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Roach, Benjamin D. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Szczygiel, Patricia L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Sloop, Jr., Frederick V. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Stoner, Erica L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Williams, Neil J. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2014-03-01

    This report summarizes the FY 2010 and 2011 accomplishments at Oak Ridge National Laboratory (ORNL) in developing the Next Generation Caustic-Side Solvent Extraction (NG-CSSX) process, referred to commonly as the Next Generation Solvent (NGS), under funding from the U.S. Department of Energy, Office of Environmental Management (DOE-EM), Office of Technology Innovation and Development. The primary product of this effort is a process solvent and preliminary flowsheet capable of meeting a target decontamination factor (DF) of 40,000 for worst-case Savannah River Site (SRS) waste with a concentration factor of 15 or higher in the 18-stage equipment configuration of the SRS Modular Caustic-Side Solvent Extraction Unit (MCU). In addition, the NG-CSSX process may be readily adapted for use in the SRS Salt Waste Processing Facility (SWPF) or in supplemental tank-waste treatment at Hanford upon appropriate solvent or flowsheet modifications. Efforts in FY 2010 focused on developing a solvent composition and process flowsheet for MCU implementation. In FY 2011 accomplishments at ORNL involved a wide array of chemical-development activities and testing up through single-stage hydraulic and mass-transfer tests in 5-cm centrifugal contactors. Under subcontract from ORNL, Argonne National Laboratory (ANL) designed a preliminary flowsheet using ORNL cesium distribution data, and Tennessee Technological University confirmed a chemical model for cesium distribution ratios (DCs) as a function of feed composition. Interlaboratory efforts were coordinated with complementary engineering tests carried out (and reported separately) by personnel at Savannah River National Laboratory (SRNL) and Savannah River Remediation (SRR) with helpful advice by Parsons Engineering and General Atomics on aspects of possible SWPF implementation.

  6. 基于PIC18F455O的环境监测数据采集系统设计%Design of A USB Data Acquisition System for Environment Monitoring Based on PIC18F4550 MCU

    Institute of Scientific and Technical Information of China (English)

    胡刚; 刘建鑫; 郭炜

    2012-01-01

    This article introduces a USB data acquisition system based on PIC18F4550 MCU and USB-HID Class, and describes an application of it. Related Circuits, MCU firmware and PC program are also introduced in detail. This system is characterized with practicability, inexpensiveness and rapidity of developing period.%介绍了基于PIC18F4550单片机和USB-HID类的数据采集系统,并列举了该系统在环保分析仪器中的应用实例.详细介绍了相关的电路设计、单片机固件程序和上位机程序的开发流程.该方案具有实用性强,成本低廉,开发周期短等特点.

  7. Master-slave Communication Between S7-200 PLC and MCU Based on Modbus Protocol%基于Modbus协议的S7-200系列PLC与单片机主从通信研究

    Institute of Scientific and Technical Information of China (English)

    李辉; 吴小平

    2012-01-01

    介绍了Modbus协议主从网络结构,提出了使用Modbus协议主站库指令的S7-200系列PLC与单片机串行通信的方法,描述了单片机采用串口接收和定时中断传递消息帧的设计方案,给出了从站通信程序流程图.%This paper introduced master-slave network structure of Modbus protocol. It proposed the method of serial communication between S7-200 PLC based on Modbus Protocol master-station library instruction and MCU, described the design project that MCU transmit message frame using serial port receive and timer interrupter, and gave the program flow chart of slave-station.

  8. Design and Realization of Three Uplink HD Video Conferencing System Based on MCU%MCU级联的省—市—县三级高清视频会议系统设计

    Institute of Scientific and Technical Information of China (English)

    张常亮; 马渝勇; 刘一谦; 谭红宾

    2012-01-01

    Combined with practical experience, in this paper, the design and realization of HD video conferencing system in Sichuan province are introduced. How the MCU cascade is used to construct HD video conferencing system is then illustrated. Besides, the key technologies of HD video conferencing system arc studied. Among these technologies, the HD signal interface and MCU cascade method are mainly expounded.%结合实际经验,介绍了四川气象高清视频会议系统的设计和实现过程.重点阐述了如何使用MCU级联构建省—市—县三级高清视频会议系统,并对高清视频会议系统关键技术进行了研究和分析,详细介绍了高清信号接口和MCU级联的具体方法.

  9. KEYBOARD DESIGNING AND PROGRAMMING BASED ON M68HC08 SERIAL MCU%基于M68HC08系列单片机的键盘设计与编程

    Institute of Scientific and Technical Information of China (English)

    王宜怀; 王林; 张志平

    2001-01-01

    In this paper, the programming method of keyboard interrupt module for Motorola M68HC08 serial MCU is discussed. A design example about keyboard interface circuit based on MC68HC908GP32 MCU is given, and keyboard identification, the definition value of key, keyboard interrupt programming method are discussed.%讨论Motorola的新一代单片机M68HC08系列的键盘中断模块的编程方法,给出了一个基于MC68HC08GP32单片机的键盘接口电路设计实例,讨论了键的识别、键值定义、键盘中断等功能子程序的编制方法。

  10. The mitochondrial calcium uniporter MCU and regulator MICU1%线粒体钙离子单向转运蛋白MCU及调节蛋白MICU1

    Institute of Scientific and Technical Information of China (English)

    郭晓强; 计惠民

    2012-01-01

    Mitochondrial Ca2+ uptake plays an important role in energy production, cell division and death. However, its mechanism was poorly understood. Recently, mitochondrial calcium uniporter (MCU) and mitochondrial calcium uptake 1 (MICU1) have been identified in several researches. Both proteins are located in the mitochondria! inner membrane and involved calcium uptake. MCU has two transmembrane domains and shows channel activity, which is sensitive to ruthenium-red. MICUI has two canonical EF hands that are essential for calcium sensing, and may be a regulator of MCU. These progresses are beneficial for the understanding mitochondrial Ca2* homeostasis and the treatment of mitochondrion related diseases.%线粒体钙离子摄入对能量生成、细胞分裂和死亡均具有十分重要的作用,但对该过程的机制却知之甚少.最近研究鉴定出线粒体钙离子单向转运蛋白(MCU,mitochondrial calcium uniporter)和线粒体钙离子摄入蛋白1(MICU1,mitochondrial calcium uptake 1),这两种蛋白都定位于线粒体内膜,均参与钙离子摄入.MCU拥有两个跨膜结构域,显示出钙离子通道活性并对钌红敏感,而MICU1具有两个典型的EF手形结构域,该结构可感知钙离子的变化,可能作为MCU调节蛋白发挥作用.这些研究进展对线粒体内稳态的理解和线粒体相关疾病的治疗具有重要意义.

  11. Single Stage Contactor Testing Of The Next Generation Solvent Blend

    Energy Technology Data Exchange (ETDEWEB)

    Herman, D. T.; Peters, T. B.; Duignan, M. R.; Williams, M. R.; Poirier, M. R.; Brass, E. A.; Garrison, A. G.; Ketusky, E. T.

    2014-01-06

    The Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) facility at the Savannah River Site (SRS) is actively pursuing the transition from the current BOBCalixC6 based solvent to the Next Generation Solvent (NGS)-MCU solvent to increase the cesium decontamination factor. To support this integration of NGS into the MCU facility the Savannah River National Laboratory (SRNL) performed testing of a blend of the NGS (MaxCalix based solvent) with the current solvent (BOBCalixC6 based solvent) for the removal of cesium (Cs) from the liquid salt waste stream. This testing utilized a blend of BOBCalixC6 based solvent and the NGS with the new extractant, MaxCalix, as well as a new suppressor, tris(3,7dimethyloctyl) guanidine. Single stage tests were conducted using the full size V-05 and V-10 liquid-to-liquid centrifugal contactors installed at SRNL. These tests were designed to determine the mass transfer and hydraulic characteristics with the NGS solvent blended with the projected heel of the BOBCalixC6 based solvent that will exist in MCU at time of transition. The test program evaluated the amount of organic carryover and the droplet size of the organic carryover phases using several analytical methods. The results indicate that hydraulically, the NGS solvent performed hydraulically similar to the current solvent which was expected. For the organic carryover 93% of the solvent is predicted to be recovered from the stripping operation and 96% from the extraction operation. As for the mass transfer, the NGS solvent significantly improved the cesium DF by at least an order of magnitude when extrapolating the One-stage results to actual Seven-stage extraction operation with a stage efficiency of 95%.

  12. EtherCAT协议芯片与单片机通信系统的研究%The research of communication system based EtherCAT and MCU

    Institute of Scientific and Technical Information of China (English)

    康存锋; 杜斐斐; 马春敏; 黄旭东; 费仁元

    2011-01-01

    EtherCAT是基于标准的以太网技术,具有灵活的网络拓扑结构,系统配置简单,具有高速、高有效数据率等特点,其有效数据率可达90%以上.PIC系列单片机和EtherCAT协议芯片通过SPI串行通信方式进行连接,实现基于EtherCAT协议通信系统的基本通信功能,解决了传统以太网的介质访问控制方式不能满足工业现场实时性要求的问题.系统测试实验表明,系统通信准确,运行稳定,而且通过分析系统通信过程中的报文可知,系统的通信完全符合EthercAT 协议的要求.%EtherCAT based measured Ethernet technology has flexible framework of topology of network, simple of configure of system, and it has character of high speed and percentage of available date, which can reach ninety percent. It has solved problem of real time of Ethernet. The PIC series MCU was selected to communicated with EtherCAT by SPI connection. The result of experiment show that exact communication and stably system.

  13. Design of queuing management system based on STC MCU%基于STC单片机的排队管理系统的设计

    Institute of Scientific and Technical Information of China (English)

    武一; 高超

    2012-01-01

    In order to improve the Service quality and work efficiency,to solve the dry and disordered queue problem,the system simulated the artificial process of calling number,using STC89C52 MCU control printer,LCD and voice chip to achieve the work that print,storage,display and broadcast line number.Furthermore,using MAX485 to extend RS-485 bus interface,that can achieve distributed serial communication.The system can meet the needs of casual queue and has many characteristics,such as low cost,small space occupation and better prospect.%为改善营业窗口的服务质量和工作效率,解决枯燥无序的排队问题,采用STC89C52单片机控制语音芯片、打印机、LCD显示屏来模拟人工叫号过程,完成号码的打印、存储、显示及播报工作;采用MAX485扩展RS-485总线接口,实现分布式串行通信。该系统能满足简单的排队需求,具有开发成本低,占用空间小等优点,有较好的市场应用前景。

  14. Structure and Redox Properties of VCe0.95M0.05 (M=Cu, Co, Mn, Fe and Cr) Mixed Oxides

    Institute of Scientific and Technical Information of China (English)

    钟依均; 罗孟飞

    2002-01-01

    The mixed oxides, VCe and VCe0.95M0.05 (M=Cu, Co, Mn, Fe and Cr), we re prepared by sol-gel method. The structure and redox properties of these mixe d oxides were characterized by XRD, Raman, XPS and TPR techniques. The main phas e is tetragonal VCeO4 phase in all samples. The substitution of Fe, Mn, Cu or Co for Ce results in the formation of CeO2 or monoclinic VCeO4 phase. The XP S result indicates that valence of V is +5+δ(δ<1) in VCe0.95Co0 .05, VCe0.95Mn0.05, VCe0.95Cr0.05 and VCe0.95Fe 0.05 samples compared with VCe , on the contrary, valence of V is +5-δ (δ<1) in VCe0.95Cu0.05 sample. The Fe, Co, Cr and Mn enhanc e the reduction of V5+ in VCeO4, whereas Cu inhibits this reduction.

  15. Hyperpolarizabilities of Chelidamic Acid Complexes M_m(C_7H_3O_5N)_n (M=Cu, Ag): Theoretical Analysis

    Institute of Scientific and Technical Information of China (English)

    ZHANG, Xin; ZHOU, Guowei; TAN, Kai; GUO, Guocong; LIN, Menghai; ZHANG, Qianer

    2009-01-01

    The frequency-dependent hyperpolarizabilities of cbelidamic acid complexes M_m(C_7H_3O_5N)n (M=Cu, Ag) were investigated under the time dependent density functional theory (TDDFT) combined with the sum-over-states method (SOS). The relationship between molecular orbitals and nonlinear optical (NLO) properties has been explored. The results show that the charge transitions of π-π~* and 3d_M-π~* are very important to the second-order polarizabilities, and the largest component of dynamic β is 3.84×10~(-25) cm~5·esu~(-1) at 0.74 eV for Ag_2Cu_2(C_7H_3O_5N)_4.The charge transition between π-π~* is also highly crucial to the third-order polarizabilities, and the largest component of dynamic γ is -4.46×10~(-29) esu at 0.50 eV for Ag_2Cu_2(C_7H_3O_5N)_4. The central Cu ion, as electron bridge,extends the range of delocalization and leads to an interesting phenomenon of piroconjugation.

  16. Diatomite-supported Pd-M (M=Cu, Co, Ni) bimetal nanocatalysts for selective hydrogenation of long-chain aliphatic esters.

    Science.gov (United States)

    Huang, Changliang; Zhang, Hongye; Zhao, Yanfei; Chen, Sha; Liu, Zhimin

    2012-11-15

    Diatomite supported Pd-M (M=Cu, Co, Ni) bimetal nanocatalysts with various metal compositions were prepared and characterized by means of X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. It was demonstrated that the metal nanoparticles were uniformly distributed on the support, and their size was centered around 8 nm with a relatively narrow size distribution. The catalysts were used to catalyze hydrogenation of long-chain aliphatic esters, including methyl palmitate, methyl stearate, and methyl laurate. It was indicated that the all diatomite-supported Pd-based bimetal catalysts were active to the selective hydrogenation of long-chain esters to corresponding alcohols at 270°C, originated from the synergistic effect between the metal particles and the diatomite support. For the selective hydrogenation of methyl palmitate, Pd-Cu/diatomite with metal loading of 1% and Pd/Cu=3 displayed the highest performance, giving a 1-hexadecanol yield of 82.9% at the substrate conversion of 98.8%. Copyright © 2012 Elsevier Inc. All rights reserved.

  17. The Monte Carlo estimation of an effect of uncertainties in initial data on solving the transport equation by means of the MCU code

    Energy Technology Data Exchange (ETDEWEB)

    Oleynik, D. S., E-mail: oleynik-ds@nrcki.ru [National Research Center Kurchatov Institute (Russian Federation)

    2015-12-15

    A new version of the tally module of the MCU software package is developed in which the approach for taking directly into account the uncertainty in initial data is implemented that is recommended by the international standard on estimating the uncertainty in results of measuring (ISO 13005). The new module makes it possible to evaluate the effect of uncertainty in initial data (caused by technological tolerances in fabrication of structural members of the core) on neutronic characteristics of the reactor. The developed software is adapted to parallel computing with the use of multiprocessor computers, which significantly reduces the computation time: the parallelization coefficient is almost equal to 1. Testing is performed by examples of solving the problem on criticality for the Godiva benchmark experiment and also for the infinite lattice of fuel assemblies of the VVER-440, VVER-1000, and VVER-1200. The results of calculations of the uncertainty in neutronic characteristics (effective multiplication factor, fission reaction rate), which is caused by uncertainties in initial data due to technological tolerances, are compared (in the first case) to the published results obtained using the precision MCNP5 code and (in the second case) to those obtained by means of the RADAR engineering program. A good agreement of results is achieved for all cases.

  18. The Monte Carlo estimation of an effect of uncertainties in initial data on solving the transport equation by means of the MCU code

    Science.gov (United States)

    Oleynik, D. S.

    2015-12-01

    A new version of the tally module of the MCU software package is developed in which the approach for taking directly into account the uncertainty in initial data is implemented that is recommended by the international standard on estimating the uncertainty in results of measuring (ISO 13005). The new module makes it possible to evaluate the effect of uncertainty in initial data (caused by technological tolerances in fabrication of structural members of the core) on neutronic characteristics of the reactor. The developed software is adapted to parallel computing with the use of multiprocessor computers, which significantly reduces the computation time: the parallelization coefficient is almost equal to 1. Testing is performed by examples of solving the problem on criticality for the Godiva benchmark experiment and also for the infinite lattice of fuel assemblies of the VVER-440, VVER-1000, and VVER-1200. The results of calculations of the uncertainty in neutronic characteristics (effective multiplication factor, fission reaction rate), which is caused by uncertainties in initial data due to technological tolerances, are compared (in the first case) to the published results obtained using the precision MCNP5 code and (in the second case) to those obtained by means of the RADAR engineering program. A good agreement of results is achieved for all cases.

  19. 基于单片机的智能型桌椅的设计%Design of Intelligent Desk and Chai r Based on MCU

    Institute of Scientific and Technical Information of China (English)

    荣莲; 王海明; 朱昌昊; 杜娟; 韩建华

    2015-01-01

    介绍了基于单片机的智能型桌椅的设计,通过对桌椅高度的调节和桌面的设计,来满足不同身高使用者的使用要求。按照人体工程学的要求对椅面和椅背进行设计,将单片机运用在椅子上,通过压力传感器和距离传感器等器件提醒使用者在学习中保持正确的坐姿,养成良好的用眼习惯,从而有效防止近视的发生。%This design of intelligent desk and chair based on MCU is introduced in this paper ,the height of the desk and chair can be adjusted to satisfy the users with different height .The back of the chair is designed based on human body engineering ,and a pres‐sure sensor and a distance sensor are used to remind the user to keep correct posture in learning ,so as to effectively prevent the oc‐currence of myopia .

  20. DESIGNING AND REALISING AN MCU-BASED IP-KEYBOARD%一种基于单片机的网络键盘的设计与实现

    Institute of Scientific and Technical Information of China (English)

    王君; 罗焕佐; 许石哲; 邹媛媛

    2011-01-01

    针对工业设备智能维护领域,通过研究分析PS/2键盘的接口、电气特性及协议规范,利用单片机实现了标准的PC机键盘.并结合网络技术,设计并实现了一种网络键盘,称之为IP-KeyBoard,其扩展了传统键盘的作用范围,可以对远程设备进行调试、参数设置等本地键盘操作.在局域网环境下,实验验证了网络键盘远程操作的可行性.%In light of the field of intelligent maintenance of industrial equipments, by studying and analysing the interface, electrical characteristics and protocol specification of the PS/2 keyboard, in this article we realized a standard PC keyboard with MCU ,and combining with the network technology, we designed and implemented a kind of network keyboard, which is named the IP-KeyBoard in this article. It expands the function range of traditional keyboard, and can be used to do some local keyboard operations on remote equipments. In environment of LAN, the feasibility of the IP-KeyBoard has been proved by the experiments.

  1. Sample results from the Interim Salt Disposition Program Macrobatch 8 Tank 21H qualification samples

    Energy Technology Data Exchange (ETDEWEB)

    Peters, T. B. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Washington, II, A. L. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-01-13

    Savannah River National Laboratory (SRNL) analyzed samples from Tank 21H in support of qualification of Macrobatch (Salt Batch) 8 for the Interim Salt Disposition Program (ISDP). An Actinide Removal Process (ARP) and several Extraction-Scrub-Strip (ESS) tests were also performed. This document reports characterization data on the samples of Tank 21H as well as simulated performance of ARP and the Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU). No issues with the projected Salt Batch 8 strategy are identified. A demonstration of the monosodium titanate (MST) (0.2 g/L) removal of strontium and actinides provided acceptable average decontamination factors for plutonium of 2.62 (4 hour) and 2.90 (8 hour); and average strontium decontamination factors of 21.7 (4 hour) and 21.3 (8 hour). These values are consistent with results from previous salt batch ARP tests. The two ESS tests also showed acceptable performance with extraction distribution ratios (D(Cs)) values of 52.5 and 50.4 for the Next Generation Solvent (NGS) blend (from MCU) and NGS (lab prepared), respectively. These values are consistent with results from previous salt batch ESS tests. Even though the performance is acceptable, SRNL recommends that a model for predicting extraction behavior for cesium removal for the blended solvent and NGS be developed in order to improve our predictive capabilities for the ESS tests.

  2. SAMPLE RESULTS FROM THE INTERIM SALT DISPOSITION PROGRAM MACROBATCH 8 TANK 21H QUALIFICATION SAMPLES

    Energy Technology Data Exchange (ETDEWEB)

    Peters, T. B.; Washington, A. L.

    2015-01-13

    Savannah River National Laboratory (SRNL) analyzed samples from Tank 21H in support of qualification of Macrobatch (Salt Batch) 8 for the Interim Salt Disposition Program (ISDP). An Actinide Removal Process (ARP) and several Extraction-Scrub- Strip (ESS) tests were also performed. This document reports characterization data on the samples of Tank 21H as well as simulated performance of ARP and the Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU). No issues with the projected Salt Batch 8 strategy are identified. A demonstration of the monosodium titanate (MST) (0.2 g/L) removal of strontium and actinides provided acceptable average decontamination factors for plutonium of 2.62 (4 hour) and 2.90 (8 hour); and average strontium decontamination factors of 21.7 (4 hour) and 21.3 (8 hour). These values are consistent with results from previous salt batch ARP tests. The two ESS tests also showed acceptable performance with extraction distribution ratios (D{sub (Cs)}) values of 52.5 and 50.4 for the Next Generation Solvent (NGS) blend (from MCU) and NGS (lab prepared), respectively. These values are consistent with results from previous salt batch ESS tests. Even though the performance is acceptable, SRNL recommends that a model for predicting extraction behavior for cesium removal for the blended solvent and NGS be developed in order to improve our predictive capabilities for the ESS tests.

  3. Vehicle Fire Alarm System Design Based on MCU%基于单片机的车载火灾报警器设计

    Institute of Scientific and Technical Information of China (English)

    张丽霞; 方建华; 何涛

    2014-01-01

    In order to avoid the personal and property damage due to spontaneous combustion of motor vehicles, this paper designs a vehicle fire alarm. It adopts MCU as the control chip, uses K type thermocouple and MAX6675 chip to real time detect the temperature of flashpoints and reference points on the motor vehicle, when the temperature difference between the flashpoints and reference points exceeds the allowed temperature difference value setting, alarm signal is sent. The running and testing experiments for the fire alarm are carried out, obtaining the expected results, which include the temperature difference between flashpoints and reference points values, so that the pre-alarm of motor vehicle's spontaneous combustion is implemented.%为了避免因机动车自燃带来的人身和财产损害,文章设计了车载火灾报警器,其用单片机做主控制芯片,采用K型热电偶和MAX6675芯片对机动车上的易燃点和基准点的温度进行实时检测,当比较到易燃点温度和基准点温度超过设定的允许温差值时,发出报警。进行了车载火灾报警器运行和测试实验,获得了预期的结果,检测到了机动车易燃点与基准点的温度差值,据此实现了对机动车自燃火灾的预报警。

  4. 基于51单片机的智能保险柜设计%51 MCU-based intelligent safe design

    Institute of Scientific and Technical Information of China (English)

    芦力霄

    2012-01-01

      贵重物品的安全,是人身财产安全的重要一环。随着科技水平的提高,各种盗取财物的手段不断升级。因此,人们对安全稳定性好、操作便捷的智能保险柜的需求也在不断提高。介绍了以51单片机为核心,以指纹识别、温度测控、位移测控模块协同工作的系统组成,以及软、硬件的设计。该系统具有指纹识别、防火、防高温、防酸蚀、防撬、现场及同步拨号远程报警、记录报警时间等功能,实现了多功能一体化,为用户提供了基本操作提示。%  The security of valuables,important personal and property safety. With the improvement of the level of science and technology,a variety of means to steal property is escalating.Therefore the safety and stability, convenient operation of intelligent safes demand is also rising.51 MCU as the core to the fingerprint identification,temperature measurement and control, displacement measurement and control module system components work together,as well as software and hardware design. The system of fingerprint identification,fire prevention,anti-high temperature, anti-etch-ing, tamper,live and synchronous dial-up remote alarm, record the alarm time, multi-functional integration,to provide users with the basic opera-tion prompted.

  5. 基于AVR单片机的电磁场监测仪设计%Instrument design for monitoring electromagnetic field based on AVR MCU

    Institute of Scientific and Technical Information of China (English)

    吴建平; 李吉; 葛青

    2011-01-01

    设计了一个环境电磁污染监测系统,能够测量环境磁场大小,测量精度可达到6×104-8T.利用磁阻芯片特有的置位/复位功能有效地消除因温度漂移和电路参数漂移等共模信号造成的误差,提高了磁场检测的灵敏度.监测仪器以Atmega16L为控制器,单片集成磁场传感器HMC1052L为检测元件,其输出通过运算放大器LMV358放大,利用Atmega16L单片机模数转换器转换成数字信号,并由LCD显示测量结果.%A system for monitoring environment electromagnetic pollution was designed. The instrument could measure the environment electromagnetic radiation and its measurement accuracy reached 0.6 mG. The error caused by common mode signals such as temperature and circuit parameter drift can be eliminated efficiently with the SET/RESET function of HMC, and the sensitivity of detecting the magnetic field was improved. Basing on Atmega16L, the instrument used the sensor HMC1052L as detection component. The output signal of the sensor was amplified by operational amplifier LMV358, then the amplified signal was converted to digital signal by ADC on Atmega16L MCU, and measurement result was displayed on LCD.

  6. SLC25A23 augments mitochondrial Ca²⁺ uptake, interacts with MCU, and induces oxidative stress-mediated cell death.

    Science.gov (United States)

    Hoffman, Nicholas E; Chandramoorthy, Harish C; Shanmughapriya, Santhanam; Zhang, Xueqian Q; Vallem, Sandhya; Doonan, Patrick J; Malliankaraman, Karthik; Guo, Shuchi; Rajan, Sudarsan; Elrod, John W; Koch, Walter J; Cheung, Joseph Y; Madesh, Muniswamy

    2014-03-01

    Emerging findings suggest that two lineages of mitochondrial Ca(2+) uptake participate during active and resting states: 1) the major eukaryotic membrane potential-dependent mitochondrial Ca(2+) uniporter and 2) the evolutionarily conserved exchangers and solute carriers, which are also involved in ion transport. Although the influx of Ca(2+) across the inner mitochondrial membrane maintains metabolic functions and cell death signal transduction, the mechanisms that regulate mitochondrial Ca(2+) accumulation are unclear. Solute carriers--solute carrier 25A23 (SLC25A23), SLC25A24, and SLC25A25--represent a family of EF-hand-containing mitochondrial proteins that transport Mg-ATP/Pi across the inner membrane. RNA interference-mediated knockdown of SLC25A23 but not SLC25A24 and SLC25A25 decreases mitochondrial Ca(2+) uptake and reduces cytosolic Ca(2+) clearance after histamine stimulation. Ectopic expression of SLC25A23 EF-hand-domain mutants exhibits a dominant-negative phenotype of reduced mitochondrial Ca(2+) uptake. In addition, SLC25A23 interacts with mitochondrial Ca(2+) uniporter (MCU; CCDC109A) and MICU1 (CBARA1) while also increasing IMCU. In addition, SLC25A23 knockdown lowers basal mROS accumulation, attenuates oxidant-induced ATP decline, and reduces cell death. Further, reconstitution with short hairpin RNA-insensitive SLC25A23 cDNA restores mitochondrial Ca(2+) uptake and superoxide production. These findings indicate that SLC25A23 plays an important role in mitochondrial matrix Ca(2+) influx.

  7. Design and Implementation of the Intelligent Car Based on MCU%基于单片机的智能小车的设计与实现

    Institute of Scientific and Technical Information of China (English)

    郭海丽

    2015-01-01

    The design of the intelligent car which uses STC89C52 MCU as the core of the controlling system is introduced. The design consists of the motor drive module, ultrasonic ranging module, tracking module, infrared and voice modules, which intends to implement a driverless bus system. The car of this design with C language programming can achieve forward and backward movement, turning, automatic tracking navigation, ultrasonic distance measurement and speed adjusting according to the detected obstacle distance, infrared remote control fixed-point broadcast. It can achieve intelligent control and design goals. The system is a simple circuit structure with low power consumption and high stability. It has some practical value.%介绍了一种以 STC89C52单片机为控制核心的智能小车的设计。设计由电机驱动模块、超声波测距模块、循迹模块、红外和语音模块组成,拟实现一个无人驾驶公交车系统。通过 C 语言编程实现小车的前进倒退、转向行驶、自动循迹导航、超声波测距,并根据检测障碍物距离调整速度、红外遥控定点播报功能,实现智能控制,达到设计目标。该系统电路结构简单、功耗低、稳定性高,具有一定实际应用价值。

  8. 基于单片机控制的频率综合器设计%Design of frequency synthesizer based on MCU controlling

    Institute of Scientific and Technical Information of China (English)

    刘成; 凌丹

    2012-01-01

    以ADF4360芯片为核心,设计实现了频率综合器作为1.95 GHz一次变频超外差射频接收机的本振部分,并制作了单片机控制电路.经测试,可以在1.6GHz ~ 1.95GHz范围内以0.5MHz为步长调节输出本振信号频率.在频率为1.9GHz时,相位噪声为-68dBc/Hz(1kHzoffset)、-71dBc/Hz(10kHz offset)、-110dBc/Hz(100kHz offset)、- 115dBc/Hz(1MHz offset).频率偏差小于50kHz.%This paper achieved a frequency synthesizer based on ADF4360, as the LO of 1. 95GHz single conversion super-heterodyne RF receiver. A MCU circuit is designed to control the synthesizer. The output LO frequency can be adjusted from 1. 6GHz to 1. 95 GHz in step of 0. 5 MHz. When the output frequency is 1. 9GHz, the phase noise floor is -68dBc/Hz( 1kHz offset) , -71dBc/Hz( 10kHz offset), -110dBc/Hz(100kHz offset), - 115dBc/Hz( 1MHz offset). The frequency deviation is less than 50kHz.

  9. 基于单片机的地下车库车位监测系统的设计%Design on Parking Monitoring System of Underground Garage Based on MCU

    Institute of Scientific and Technical Information of China (English)

    薛德宽; 位浩杰; 胡爱芹; 黄兴洲; 任学智; 关华清

    2016-01-01

    This paper presents a new underground parking monitoring system based on MCU ,used in the real time monitoring of the underground parking garage .The system is based on MCU ,collectingvoltage signal of silicon photovoltaic cells before and after the illumination light signal is blocked ,processing silicon photocell voltage signal using the voltage comparator circuit .At last , the electrical signal after treatment is transmitted to the MCU ,and real time data is displayed on the LCD screen .The system com bines silicon photovoltaic cells and garage lighting to enhance the value of the illumination light ,achieving real time monitoring of parking information ,so that it can improve the operational efficiency of the garage .%提出了一种基于单片机的地下车位监测系统,应用于地下车库车位实时监测。该系统以单片机为基础,采集车位照明灯光信号被遮挡前后的硅光电池的电压信号,用电压比较电路处理硅光电池的电压信号,并将处理之后的电信号传送至单片机,最后将车位实时数据在液晶屏上显示。本系统将硅光电池和车库照明系统有机结合起来,提升了照明灯光的应用价值;实现了车位信息的实时监测,提高了车库的运作效率。

  10. An Asynchronous Multi-Sensor Micro Control Unit for Wireless Body Sensor Networks (WBSNs

    Directory of Open Access Journals (Sweden)

    Ching-Hsing Luo

    2011-07-01

    Full Text Available In this work, an asynchronous multi-sensor micro control unit (MCU core is proposed for wireless body sensor networks (WBSNs. It consists of asynchronous interfaces, a power management unit, a multi-sensor controller, a data encoder (DE, and an error correct coder (ECC. To improve the system performance and expansion abilities, the asynchronous interface is created for handshaking different clock domains between ADC and RF with MCU. To increase the use time of the WBSN system, a power management technique is developed for reducing power consumption. In addition, the multi-sensor controller is designed for detecting various biomedical signals. To prevent loss error from wireless transmission, use of an error correct coding technique is important in biomedical applications. The data encoder is added for lossless compression of various biomedical signals with a compression ratio of almost three. This design is successfully tested on a FPGA board. The VLSI architecture of this work contains 2.68-K gate counts and consumes power 496-μW at 133-MHz processing rate by using TSMC 0.13-μm CMOS process. Compared with the previous techniques, this work offers higher performance, more functions, and lower hardware cost than other micro controller designs.

  11. Clinical Observation on the Effect of GyneFixTM IN IUD and MCu IUD in Women with Big Uterine Canal%宫腔较大妇女放置GyneFix IN IUD与MCu IUD临床效果观察

    Institute of Scientific and Technical Information of China (English)

    桑乃平; 戴亚云

    2008-01-01

    目的:比较宫腔较大妇女放置GyneFix IN IUD(吉妮IUD)和MCu IUD(爱母IUD)的临床使用效果.方法:选择既往有1次或2次以上脱器史及带器妊娠史,且自愿放置新型IUD的官腔较大(9~10cm)已婚育龄妇女220例,随机分为两组,分别放置吉妮IUD和爱母IUD,并进行24个月随访观察.结果:吉妮IUD组因症取出率、终止使用率低于爱母IUD组,两者比较差异有显著性意义(P<0.05).结论:吉妮IUD对宫腔较大妇女更具可接受性.

  12. a Movable Charging Unit for Green Mobility

    Science.gov (United States)

    ElBanhawy, E. Y.; Nassar, K.

    2013-05-01

    Battery swapping of electric vehicles (EVs) matter appears to be the swiftest and most convenient to users. The existence of swapping stations increases the feasibility of distributed energy storage via the electric grid. However, it is a cost-prohibitive way of charging. Early adaptors' preferences of /perceptions about EV system in general, has its inflectional effects on potential users hence the market penetration level. Yet, the charging matter of electric batteries worries the users and puts more pressure on them with the more rigorous planning-ahead they have to make prior to any trip. This paper presents a distinctive way of charging. It aims at making the overall charging process at ease. From a closer look into the literature, most of EVs' populations depend on domestic charge. Domestic charging gives them more confidence and increases the usability factor of the EV system. Nevertheless, they still need to count on the publically available charging points to reach their destination(s). And when it comes to multifamily residences, it becomes a thorny problem as these apartments do not have a room for charging outlets. Having said the irritating charging time needed to fatten the batteries over the day and the minimal average mileage drove daily, hypothetically, home delivery charging (Movable Charging Unit-MCU) would be a stupendous solution. The paper discusses the integration of shortest path algorithm problem with the information about EV users within a metropolitan area, developing an optimal route for a charging unit. This MCU delivers charging till homes whether by swapping batteries or by fast charging facility. Information about users is to be provided by the service provider of the neighbourhood, which includes charging patterns (timing, power capacity). This problem lies under the shortest path algorithms problem. It provides optimal route of charging that in return shall add more reliability and usability values and alleviate the charging

  13. 基于MCU控制的开关电源稳压电路设计%Design for voltage regulator circuit of switching power supply based on MCU control

    Institute of Scientific and Technical Information of China (English)

    李淑红; 邢军

    2015-01-01

    A voltage regulator circuit of the switching power supply based on MCU control was designed,which is com-posed of rectification filtering circuit,push-pull power conversion circuit and control circuit. In this circuit,the output voltage of the switching power supply is controlled by regulating PWM via the MCU. The digital signal output by MCU is converted into analog signal through the DAC0832. The analog signal is taken as the reference voltage of the second pin of the switching con-trol chip SG3525. SG3525 generates PWM control pulse automatically according to the variation of reference voltage to regulate the output pulse width of the switching tube,so the purpose of regulating the output voltage is achieved. The experimental re-sults show that the output voltage adjustable range is 28~36 V,the maximum output current is 15 A,and the efficiency of the switching power supply is 89%.%设计了一款基于MCU控制的开关电源稳压电路,该系统主要由整流滤波电路、推挽式功率变换电路和控制电路组成,并通过MCU调节PWM控制开关电源输出电压.MCU输出的数字信号通过DAC0832转换为模拟信号,该模拟信号作为开关控制芯片SG3525第二管脚的基准电压,SG3525根据基准电压的变化自动产生PWM控制脉冲,调节开关管的输出脉宽,从而达到调节输出电压的目的.实验表明,输出电压可调范围为28~36 V,最大输出电流Imax=15 A,开关电源的效率为η=89%.

  14. Design of Ultrasonic Liquid Level Control System Based on MCU%基于单片机的超声波液位检测系统设计

    Institute of Scientific and Technical Information of China (English)

    鲁可; 张晓东; 马宏旭

    2014-01-01

    为解决腐蚀性液体的液位测量中电极特别容易被电解腐蚀的问题,将超声波技术应用到工业生产液位或物料的检测中。以AT89S52单片机为核心,建立超声波测得距离和声速与传输时间之间的关系,提出通过硬件电路设计和软件编程实现对液位高度的检测的方法,进行了超声波测距在20 cm和80 cm两种距离的试验。由于超声波受温度的影响较大,采用温度传感器对温度进行测量,根据公式进行温度补偿,并设计了报警模块,当温度过高时进行报警。结果表明,超声波测距的相对误差分别为2.5%和1.25%,这样的精度能够满足实际需求,达到了预期目标。该系统具有测量准确、功耗低、使用寿命长等特点,可以满足一般的工业需要。%To solve the problem of the electrode especially vulnerable to electrolytic corrosion in corrosive liquid level measurement, the detection of ultrasonic technology is applied to the industrial production level or materials. Carries out AT89S52 MCU as the core, establishes ultrasonic measurement of relationship between distance and speed and the transmission time, the method of detecting the height of the liquid level is realized by hardware circuit design and software programming, the ultrasonic ranging in the test of 20cm and 80cm two kinds of distance. The ultrasonic influenced by temperature, measure the temperature by temperature sensor, according to the temperature compensation formula, and the design of alarm module, when the temperature is too high. The results show that, the relative error of ultrasonic distance measurement was 2.5%and 1.25% respectively, the accuracy can meet the actual demand, to achieve the expected goal. The system has the characteristics of accurate measurement, low power consumption, long service life, can meet the general needs of industry.

  15. The Digital Multi-Motor Control Platform Design Based on C8051F020 MCU%基于单片机C8051F020的数字多电机控制平台的设计

    Institute of Scientific and Technical Information of China (English)

    丁冲; 张敏; 辛鹏

    2013-01-01

    The digital multi-motor control platform based on the C8051F020 MCU was introducted. The hardware was simple and reliable. MOSFET was used for power circuits, which was more universal. The software can be directly used for other low-power motor-driven control system through rewriting .%介绍了基于单片机C8051F020搭建的多台电机控制平台,硬件电路简单可靠,功率电路采用场效应管自行搭建,通用性较强,通过改写软件,可直接用于其它小功率电机的驱动控制系统.

  16. PIC单片机控制下的无线模块自主选频数据传输%Independent Frequency Selection Data Transmission Based on Wireless Module Controlled by PIC MCU

    Institute of Scientific and Technical Information of China (English)

    蒲林蒸; 林东

    2013-01-01

    提出一种采用PIC16系列单片机和CC2500无线射频芯片的自主选频无线数据传输系统的设计方法,包括系统硬件电路设计和软件实现.系统具有自主选频功能,解决CC2500在ISM频段内由于同频干扰而产生的频率冲突问题.%A PIC16 MCU and CC2500 radio frequency (RF) chip self-selected frequency wireless data transmission system design method is presented in this paper, including system hardware circuit design and software implementation. As the system has independent frequency selection function, the frequency conflict is solved due to co-channel interference in the ISM band frequency.

  17. Effect of water vapor on the CO and CH_4 catalytic oxidation over CeO_2-MO_x (M=Cu, Mn, Fe, Co, and Ni) mixed oxide

    Institute of Scientific and Technical Information of China (English)

    乔东升; 卢冠忠; 郭耘; 王艳芹; 郭杨龙

    2010-01-01

    CeO2-MOx (M=Cu, Mn, Fe, Co, and Ni) mixed oxide catalysts were prepared by a citric acid complexation-combustion method. CeO2-MOx solid solutions could be formed with M cations doping into CeO2 lattice, while NiO and Co3O4 phases were detected on the surface of CeO2-NiO and CeO2-Co3O4 by Raman spectroscopy. The presence of M in CeO2 could obviously promote its catalytic activity for CH4 catalytic combustion and CO oxidation. Among the prepared samples, CeO2-CuO exhibited the best performance for CO oxidatio...

  18. Based on AT89C51 MCU Wireless Remote Control System of Electric Vehicle%基于AT89C51单片机的电动车无线遥控系统

    Institute of Scientific and Technical Information of China (English)

    秦建国

    2011-01-01

    采用AT89C51单片机作为控制核心,通过红外遥控方式实现无线遥控。系统主要包括红外遥控收发电路、信号处理电路和电机控制电路等,由控制软件实现对小车电机的快速启动、制动和反转等自动遥控功能。%This paper introduces a kind of use AT89C51 MCU as control core,using infrared remote control mode design wireless remote control system.The system includes ir remote-controlled transceiver circuit,signal processing circuit,motor control circuit,by applying a control software to realize fast start to car motor reverse,braking and automatic control function.

  19. Effects of substituting Ni with M (M=Cu, Al and Mn) on microstructures and electrochemical characteristics of La-Mg-Ni system (PuNi3-type) electrode alloys

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yanghuan; ZHAO Dongliang; DONG Xiaoping; REN Huiping; GUO Shihai; WANG Xinlin

    2006-01-01

    In order to improve the electrochemical cycle stability of La-Mg-Ni system (PuNi3-type) hydrogen storage alloy, Ni in the alloys was partially substituted by M (M=Cu, Al, Mn). A new La-Mg-Ni system electrode alloys La0.7Mg0.3Ni2.55-xCo0.45Mx (M=Cu, Al, Mn;x =0,0.1) were prepared by casting and rapid quenching. The effects of element substitution and rapid quenching on the microstructures and electrochemical performances of the alloys were investigated. The results by XRD, SEM and TEM show that the alloys havea multiphase structure, including the (La, Mg)Ni3 phase, the LaNi5 phase and the LaNi2 phase. The rapid quenching and element substitution have an imperceptible influence on the phase compositions of the alloys, but both change the phase abundance of the alloys. The rapid quenching significantly improves the composition homogeneity of the alloys and markedly decreases the grain size of the alloys. The Cu substitution promotes the formation of an amorphous phase in the as-quenched alloy, and a reversal result by the Al substitution. The electrochemical measurement indicates that the element substitution decreases the discharge capacity of the alloys, whereas it obviously improves the cycle stability of the alloys. The positive influence of element substitution on the cycle life of the alloys is in sequence Al>Cu>Mn, and negative influence on the discharge capacity is in sequence Al>Mn>Cu. The rapid quenching significantly enhances the cycle stability of the alloys, but it leads to a different extent decrease of thedischarge capacity of the alloys.

  20. 基于单片机的大棚温湿度控制系统设计%Design of temperature and humidity control system in greenhouse based on MCU

    Institute of Scientific and Technical Information of China (English)

    郭荣艳; 胡翔

    2012-01-01

    针对目前温湿度控制现状,设计了一种大棚温湿度控制系统,给出了系统的硬件电路、软件设计思路.该系统以单片机AT89C52为控制中心,采用SHT71为温湿度检测元件,实时监控温湿度的变化.单片机与智能传感器相连,采集并处理传感器的测量数据;通过LCD12864实时显示温湿度的数值;当温度超出允许范围时,电机开始启动来调节温度,从而实现对整个温湿度控制系统的管理.这种温湿度控制系统具有传感精度高、易于管理等优点.%According to the present situation of temperature and humidity control, a control system on temperature and humidity of greenhouse is designed, consisting of hardware circuit and software design. The system can accomplish real-- time control on temperature and humidity, taking MCU AT89C52 as control core and SHT71 as sensing element of temperature and humidity. MCU and intelligent sensors are linked together, collecting and processing measured datas with intelligent sensor. Real - time temperature and humidity values can be displayed through LCD12864. When temperature exceeds the al- lowable range, the motor will be started to adjust the temperature, so as to management and control the whole temperature and humidity system. This kind of temperature and humidity control system is easily managed with high precision.

  1. Design of Central Management & Control Unit for Onboard High-Speed Data Handling System

    Institute of Scientific and Technical Information of China (English)

    LI Yan-qin; JIN Sheng-zhen; NING Shu-nian

    2007-01-01

    The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Based on the advanced techniques of foreign countries, an improved structure of onboard data handling systems feasible for SST, is proposed. This article concentrated on the development of a Central Management & Control Unit (MCU) based on FPGA and DSP. Through reconfigurating the FPGA and DSP programs, the prototype could perform different tasks.Thus the inheritability of the whole system is improved. The completed dual-channel prototype proves that the system meets all requirements of the MOT. Its high reliability and safety features also meet the requirements under harsh conditions such as mine detection.

  2. 基于高速单片机的GPS系统在望远镜上的应用%Application of GPS System in Telescope Based on High-speed MCU

    Institute of Scientific and Technical Information of China (English)

    刘新玮; 李洪文

    2012-01-01

    对于很多望远镜系统来说,系统本身需要准确的时间、经纬度等GPS信息,为了满足某望远镜系统的应用,设计利用C8051F120高速单片机及U-blox公司的GPS接收机设计完成了此GPS系统;重点介绍了GPS数据的提取、与望远镜系统的通信以及GPS信息在望远镜系统上的应用,通过提高系统工作频率、数据信息的压缩处理、秒信号触发单片机外部中断等方式,提高了GPS系统的时间精度;该系统已经在两个不同望远镜系统中得到应用,实验结果表明可以满足不同系统的通信协议,在实际运行中稳定可靠,能够达到望远镜系统所要求的时间精度.%According to many telescope systems, they need exact time, longitude, latitude and so on. In order to satisfied one telescope system, the GPS system has been designed based on high—speed MCU C8051F120 and GPS receiver of U—blox company. Picking up GPS data, communicating with telescope system and application of GPS data in telescope are particular introduced. Through improving system working frequency, compressing data and MCU's external interrupt means, the GPS system has a precise time. Two different telescope systems have used the GPS system. The practice proved that it can satisfy double communication information of differen systems. Practically, the GPS system is working well and can satisfy the precise time of telescope systems.

  3. Design of Digital Control Circuit of Massaging Machine Drive Based on MCU%基于单片机的按摩机传动数字控制电路设计

    Institute of Scientific and Technical Information of China (English)

    张新荣; 张宇林; 周红标; 唐中一

    2011-01-01

    对基于单片机的按摩机传动控制电路进行设计。以单片机为核心控制芯片.以直流电机PWM调速技术为基础设计电源电路、复位电路、电机和指示灯控制电路、按键及显示电路等部分,利用软件编程实现人机交互及按摩功能。按键操作选择按摩机工作状态,报警装置示警或提示按摩完成,指示灯显示当前工作状态,LED数码管显示当前电机转速。经过理论分析及实验研究,该系统能够实现基本的按摩功能,结构简单、性价比高、体积小,可较好地满足人体腰部、足部以及颈部的按摩需要。%The digital control circuit of massaging machine drive based on MCU is designed. The MCU is used as the kernel control chip. The power circuit based on DC motor PWM speed control technology, reset circuit, motor, indicating lamp control circuit, key and display circuit are designed. The massaging machine working state is selected through the button. When massage is complete, the alarm device will prompt the user. The indicating lamp indicates the current work status. The LED displays the current speed of motor. Theory analysis and experimental study show that the system can implement basic massaging function and has advantages of simple structure, higher performance-cost ratio, small size and can better meet the human waist, foot and neck massage needs.

  4. Design of a portable falling alarm system of old people based on Arduino MCU%基于Arduino单片机的便携式老年人跌倒报警系统设计

    Institute of Scientific and Technical Information of China (English)

    肖二宁; 张兴明; 李康士; 董永吉

    2016-01-01

    In order to satisfy the fall deterction of old people, a design scheme of fall monitoring system based on Arduino MCU is proposed. and the hardware and software design of the system is completed. The system consists of a portable device and a APP monitor, The portable device mainly includes 8-bits Arduino AVR MCU, the SIM900A chip which realizes the communication function and SMS alarm, the ADXL345 chip which realizes fall detection function, and the GPS NEO 6M WAVESHARE chip which realizes the positioning function. APP monitor is based on Android 4.4 and AutoNavi map package development, support domestic arbitrary locations show easy tracking view. Practical application and test results show that, the system has the advantages of simple operation, accurate positioning, fall alarm precision, meet the design requirements.%为了实现对老年人跌倒报警的需求,提出了一种基于Arduino单片机的跌倒报警系统设计方案,并完成系统的软硬件设计。该系统由便携式设备与监护APP组成,便携式设备主要包括完成数据处理的8位AVR单片机Arduino NANO、实现通信功能及短信报警的SIM900A芯片、实现跌倒检测功能的ADXL345芯片与实现定位功能的WAVE-SHARE GPS NEO 6M芯片。监护APP部分采用基于Android 4.4与高德地图包开发,支持国内任意地点显示,支持路径规划及语音播报。实际应用与测试结果表明,该系统具有操作简便、跌倒报警准确、定位精度高等特点,具有很强的实用价值和良好的市场前景。

  5. 基于STC12C5A60S2单片机的光立方设计%Design of Light Cube Based on STC12C5A60S2 MCU

    Institute of Scientific and Technical Information of China (English)

    徐志颖; 廖远; 聂玲子

    2016-01-01

    Aimed at the limitation of the traditional flat panel display, this paper puts forward a light cube based on STC12C5A60S2 MCU. It uses STC12C5A60S2 microcomputer as the core controller, adopts monochromatic fog shaped square LEDs to form the light cube, and chooses NPN transistors to form the driven circuit. So users can use the program to achieve 3D animation display. The system has excellent features of low cost of production, good dis-play effect and functional perfection.%针对传统平面显示单一的局限性,本文设计了一种基于STC12C5A60S2单片机的光立方。整个光立方以STC12C5A60S2单片机作为核心控制器,采用单色雾状方形LED组成光立方灯体,并配以NPN型三极管构成驱动电路。用户可以通过编程实现自定义3D动画显示功能,该系统具有制作成本低、显示效果好、功能完善的特点。

  6. Electronic, optical properties and chemical bonding in six novel 1111-like chalcogenide fluorides AMChF (A=Sr, Ba; M=Cu, Ag; and Ch=S, Se, Te) from first principles calculations

    Science.gov (United States)

    Bannikov, V. V.; Shein, I. R.; Ivanovskii, A. L.

    2012-12-01

    Employing first-principles band structure calculations, we have examined the electronic, optical properties and the peculiarities of the chemical bonding for six newly synthesized layered quaternary 1111-like chalcogenide fluorides SrAgSF, SrAgSeF, SrAgTeF, BaAgSF, BaAgSeF, and SrCuTeF, which are discussed in comparison with some isostructural 1111-like chalcogenide oxides. We found that all of the studied phases AMChF (A=Sr, Ba; M=Cu, Ag; and Ch=S, Se, Te) are semiconductors for which the fitted “experimental” gaps lie in the interval from 2.23 eV (for SrAgSeF) to 3.07 eV (for SrCuTeF). The near-Fermi states of AMChF are formed exclusively by the valence orbitals of the atoms from the blocks (MCh); thus, these phases belong to the layered materials with “natural multiple quantum wells”. The bonding in these new AMChF phases is described as a high-anisotropic mixture of ionic and covalent contributions, where ionic M-Ch bonds together with covalent M-Ch and Ch-Ch bonds take place inside blocks (MCh), while inside blocks (AF) and between the adjacent blocks (MCh)/(AF) mainly ionic bonds emerge.

  7. Application of RS232 serial port in communication between PC and MCU%RS232串口通信在PC机与单片机通信中的应用

    Institute of Scientific and Technical Information of China (English)

    潘方

    2012-01-01

    在功能比较复杂的自动控制系统中,通常以工控机为上位机,单片机为下位机,RS 232串口通信是工控机和单片机之间信息传递的枢纽,采用MAX232实现、TTL逻辑电平和RS 232电平之间的相互转换,如此连接,既可体现出单片机的灵活控制功能,又可发挥出PC机强大的计算和显示功能,有利于对现场信号的实时采集、处理和监控,确保了良好的人机界面的交互性.%In function relatively-complicated automatic control system, IPC is usually used as a upper computer, MCU as a lower computer, RS232 serial port as a messaging hub of communication between IPC and SCM, and MAX232 is adopted to implement the mutual conversion between TTL logic level and RS232 level. Such a connection can embody the flexible control function of SCM, express the powerful computation and display functions of PC, and is of benefit to signal real-time acquisition, processing, and monitoring on site, so as to ensure the perfect interactivity of man-machine interface.

  8. C8051F040单片机的机器人自主定位系统设计%Design of Robot Self-positioning System Based on C8051F040 MCU

    Institute of Scientific and Technical Information of China (English)

    沈阳; 张海

    2012-01-01

    A data acquisition and positioning system integrating inertial devices and code wheel based on C8051F040 MCU,and the detailed design of hardware and software are presented. The outputs of tri-axial orthogonal gyroscope, accelerometer and magnetometer are used to calculate the carrier's attitude. Robot short-time location in 2D surface is completed according to carrier's speed and displacement information from code wheel and motion trajectory. This system has a certain practical value because of its low power consumption, small size and low cost.%设计了基于C8051F040单片机的惯性/码盘数据采集和定位系统,并给出了具体的软硬件设计方法.利用三轴陀螺、加速度计和磁阻传感器完成载体姿态的计算,结合码盘获取的载体速度和位移信息,根据航迹递推完成机器人在二维平面的短时定位.整个系统具有功耗低、体积小、成本低的优点,具有一定实用价值.

  9. Design of Intelligent Street Lamp Remote Monitoring Terminal Based on the Structure of Double MCU%基于双MCU结构的路灯远程监控终端设计

    Institute of Scientific and Technical Information of China (English)

    刘暾平; 罗世亮

    2012-01-01

    A kind of of the street lamp remote monitoring terminal based on the structure of double MCU was designed in this paper. Monitoring terminal using GPRS and power carrier communication technology realize the remote communication connection of street lamp monitoring ,and using the hybrid control strategy realize accurate control of the street lamp. Field application tests show that the performance of monitoring terminal is stable, and realize the street lamp monitoring of the dy- namic remote management.%设计一种双MCU结构的路灯远程监控终端。该终端利用GPRS和电力载波通信技术,实现路灯监控的远程通信连接;并采用复合控制策略实现路灯精准控制。现场应用测试表明该监控终端性能稳定,实现了路灯监控的动态化远程管理。

  10. 基于STC单片机的家用智能节水系统的设计与研究%Designed and Researched on Water-saving Control System for Household Based on STC MCU

    Institute of Scientific and Technical Information of China (English)

    钟丽琼; 王璨; 周潜

    2012-01-01

    A water-saving control system for household based on STC MCU is designed. The sensor of PH value is used to detect PH value of the laundry discharge water. Through the pH value determination test, the PH value of 7.2 is used as the exci tation signal. This signal is used to control the work of electromagnetic valve, so that the recyclable wash water is recovered.%设计一种基于STC单片机的家用智能节水系统,利用pH值传感器检测出洗衣时排出水的pH值,通过排水pH值测定试验,得出了pH等于7.2可为信号激发值,控制电磁换向阀换向,从而实现对可回收利用的洗涤用水的回收。

  11. Novel CX⋯π halogen bonds in complexes of acetylene and its derivatives of Na and MPH3 (M=Cu, Ag, Au) with XCCF (X=Cl, Br, I).

    Science.gov (United States)

    Zhuo, Hongying; Liu, Mingjuan; Li, Qingzhong; Li, Wenzuo; Cheng, Jianbo

    2014-06-05

    Ab initio calculations have been carried out for a variety of model systems with a T-shaped CX⋯π motif. The CX⋯π interaction of acetylene with the halogen donor molecule XCCF (X=Cl, Br, I) is invariably found to be weak with the interaction energy less than 11kJ/mol in magnitude. Substitution of the two protons in acetylene with more electron-donating sodium atoms increases the π electron density in the CC bond and leads to a substantial enhancement in its interaction with the halogen donor. The calculated interaction energies increase to as much as 73kJ/mol in the case of C2Na2-ICCF. The interaction of XCCF with a model coinage metal ethynide, H3PMCCMPH3 (M=Cu, Ag, Au), is intermediate between these two extremes, and the interaction energy is related to the nature of coinage metals. The CX⋯π halogen bonds have been analyzed with natural bond orbital, atoms in molecules, and energy decomposition.

  12. 基于AVR单片机的瓦斯预警运动控制器设计%Design of Motion Controller Based on AVR MCU for Gas Alarming

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    This paper describes a motion control system of a robot which can make autonomous decision on the basis of path condition in atrocious environment such as mine .The control system uses AVR MCU as the processor ,takes DC motor as driving device . When the robot meets a barrier in running ,it will change the driving direction rapidly and voluntarily .The control system can monitor the gas density real-timely ,and sends acquired data to communication station with wireless transceiver in mine .The system is characterized by autonomous decision ,stable motion control and real-time communication capabilities .%  设计了一种在井下能根据道路情况自主进行运动决策的机器人控制系统。以 AVR单片机为控制器件,利用直流电机作为驱动装置,遇到障碍物能够进行自主决策,实时检测瓦斯浓度,并能超限报警,同时采用无线收发模块将采集数据发送到井下设置的通信节点。该系统具有运动控制稳定、实时通信、自主决策等特点。

  13. Development of a prototype of a Master Central Unit (MCU) for the automation of Distribution Control Centers; Desarrollo de un prototipo de Unidad Central Maestra (UCM) para la automatizacion de Centros de Control de Distribucion

    Energy Technology Data Exchange (ETDEWEB)

    Uribe Blanco, Carlos Eduardo; Mata Almanza, Rafael; Picasso Blanquel, Cuitlahuac [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2011-07-01

    For the purpose of contributing to the strategic plan and to the improvement of productivity and competitiveness levels, the Federal Electric Commission (CFE, Spanish acronym) is making a significant investment in human resources and materials to modernize electric energy supply systems, including monitoring, protection and automatic control for operating all the elements of the electrical process, from generating plants to transmission lines, distribution systems and commercial applications. With this modernization, the CFE is also creating the infrastructure for the interoperability and interconnectivity of the above systems, in such a way to enable it to broaden, continue and complement the functional integration of the linked institutional systems of the latest generation. The total integration of the systems will allow the CFE to move toward Intelligent Electric Networks. Therefore, the CFE requested help from the Electric Research Institute (IIE, Spanish acronym) to develop part of the infrastructure to modernize the automation of distribution. This consists of the development of a prototype of the supervision and control system, using interoperable open technology owned by the CFE which enables using the functions of a SCADA system (Supervisory Control And Data Acquisition) to supervise and control electric distribution networks. [Spanish] Con el proposito de contribuir al plan estrategico y mejoramiento de los niveles de productividad y competitividad, la Comision Federal de Electricidad (CFE) esta invirtiendo fuertemente en recursos humanos y materiales para la modernizacion de los sistemas de suministro de energia electrica, incluyendo el monitoreo, proteccion y control automatico para la operacion de todos los elementos del proceso electrico, desde los centros de generacion hasta las lineas de transmision, los sistemas de distribucion y las aplicaciones de comercializacion. Con dicha modernizacion, la CFE tambien esta generando la infraestructura para la interoperabilidad e interconectividad de los sistemas antes mencionados, de tal forma que le permita ampliar, continuar y complementar la integracion funcional de los sistemas institucionales legados y de ultima generacion. La integracion total de los sistemas le permitiran a la CFE su migracion a lo que son las Redes Electricas Inteligentes. Por lo anterior, la CFE solicito apoyo al Instituto de Investigaciones Electricas (IIE) para desarrollar parte de la infraestructura para la modernizacion de la automatizacion de la distribucion, que consiste en el desarrollo de un prototipo de sistema de supervision y control, con tecnologia abierta interoperable y propietaria de la CFE, que le permita realizar las funciones de un sistema SCADA (Supervisory Control And Data Acquisition) para supervision y control de redes electricas de distribucion.

  14. 基于C8051F040单片机的智能枪柜设计%Design of Intelligent Gun Cabinet Based on C8051F040 MCU

    Institute of Scientific and Technical Information of China (English)

    张聪; 李艾华; 姚良; 申森

    2012-01-01

    针对目前部队应用的机械式枪柜中出现的不安全因素,提出了一种基于单片机的智能枪柜设计;智能枪柜系统采用指纹识别技术提高了枪柜门禁系统的安全性,采用视频监控技术实现了对枪柜的实时监控,设计电子检锁达到枪支在位检测功能,并通过以太网可将枪械操作信息实时上传;主要介绍智能枪柜系统的实现方案,实现枪械的在位检测功能、门禁权限控制功能以及视频录像采集功能.%According to the unsafe factors of mechanical gun cabinet used in army, this paper puts forward a design based on MCU for intelligent gun cabinet. Intelligent gun cabinet system uses fingerprint identification technology to improve the security of the access control system, takes the video monitoring technology to realize the real — time monitoring, the design of electron gun locks provides the on—line measurement, and through the Ethernet can upload real—time operation information. This paper introduces the realization of intelligent gun cabinet system solutions, achieves on—line measurement, access control and video collection functions.

  15. Design of Low-power Intelligent Tire Monitoring System Based on MSP430 MCU%基于MSP430单片机的低功耗智能轮胎监测系统设计

    Institute of Scientific and Technical Information of China (English)

    葛益娴; 杨博; 张加宏; 吴雨生

    2013-01-01

    设计了一种超低功耗的轮胎压力智能监测系统.该系统由轮胎监测模块和中心接收模块两大模块组成,以低功耗MSP430单片机为主控,监测模块利用MPXY8020A传感芯片,进行轮胎温度和压力的检测,并将数据转化后无线发送.中心模块接受数据后进行分析、处理,实现胎压的显示、语音提示、智能管理等功能.该智能轮胎监测系统可以实现对轮胎压力的智能化监测和管理,且功耗特别低,耐用性强,具有较大的实用价值.%A low-power intelligent tire pressure monitor system is designed.This system is composed of two core modules,i.e.,tire monitoring module and central receiver module,which both takes MSP430 MCU as master control.The tire monitoring module utilizes MPXY8020A sensor chip to measure temperature and pressure of tire and send the data by wireless after the measurement data conversion.The central receiver module receives the converted data and analyses them to realize the function of display,voice prompt,intelligent management.The intelligent tire monitoring system with special low-power and strong durability can achieve the intelligent tire pressure monitoring and management,and has great practical value.

  16. 基于单片机ADuC842的酒精测试仪设计%Design of alcohol detector based on MCU ADuC842

    Institute of Scientific and Technical Information of China (English)

    邵婷婷; 董军堂; 王卓

    2015-01-01

    An alcohol detector based on MCU ADuC842 was designed. The working principle and design method of the de⁃tector are introduced. The alcohol information in expiration is sampled by gas sensor MQ⁃3,and its digital signal is converted and processed by microcontroller ADuC842. The detected alcohol concentration is displayed by LCD1602 in real time,and com⁃pared with the setting thresholds to determine the alarm levels. The experiment result shows that the testing range of alcohol con⁃centration is 0~0.72 mg/L and the error is less than 0.03 mg/L. The system is simple and easy to use,which can be used to de⁃tect the alcohol concentration of drivers.%设计一款基于单片机ADuC842的酒精测试仪,并介绍该系统的工作原理和设计方法。呼气中的酒精信息由气敏传感器MQ⁃3采集,送到单片机ADuC842进行A/D转换和处理,将检测的酒精浓度通过LCD1602实时显示,另一方面与预设的酒精浓度阈值范围比较并给出报警等级。实验样机测试表明,该系统结构简单,操作方便,呼气酒精浓度测量范围为0~0.72 mg/L,误差不超过0.03 mg/L,可用于驾驶员酒精浓度的自我检测和监控。

  17. Design and Implemention of Obstacle Avoidance Mobile Robot Based on STC89C51 MCU%基于 STC89C51单片机的避障移动机器人的设计与实现

    Institute of Scientific and Technical Information of China (English)

    喻伟闯; 王铭; 付豪; 周彬彬; 袁海林; 廖红华

    2016-01-01

    设计一种避障移动机器人,该机器人以 STC89C51单片机作为控制核心,通过两个四相六线步进电机控制转动,并由 L293D 专用电机驱动芯片驱动。避障模块采用四对反射式红外传感器检测障碍物位置,单片机控制系统通过 PID 控制算法对采集的信号进行处理,语音模块选用 ISD1420语音芯片进行报警。实验结果表明,该系统性能稳定,机器人能智能避障和自动语音报警。%In this paper,a kind of obstacle avoidance mobile robot was designed.It adopted the STC89C51 MCU as the control core,the rotation of the robot was controlled by two four-phase six-line stepping mo-tors,which were driven by the special driving chip L293D.Four pairs of reflective infrared sensor were used in the obstacle avoidance module to detect obstacle position.The collected signals were processed by PID control algorithm,and the robot alarmed by the voice chip ISD1420.The experimental results show that the system is stable,the robot is able to avoid obstacles intelligently and give voice alarm automatically.

  18. 基于STC12C5A60S2单片机的视频遥控小车设计%The Design of Wireless Video Remote Control Car Based on STC12 Series MCU

    Institute of Scientific and Technical Information of China (English)

    宋扬; 朱江

    2014-01-01

    该文对视频遥控小车进行了深入的研究,设计出了一套基于STC12C5A60S2单片机的视频遥控小车系统。为了能够远程控制小车的运行状态,采用无线视频发射与接收模块将小车在现场采集到的视频信号显示在PC机上,以便控制室的人能够观察到小车现场的实时情况,利用无线数据传输模块完成主控体对小车的控制及小车运行状态的反馈,最终实现了小车的远程实时控制。%In this paper, wireless video remote control car is studied deeply, and designs a system of wireless video remote control car based on STC12C5A60S2 MCU. In order to control operation state of car wirelessly, by using the wireless video transmission and reception module, the video signal is displayed on PC in time to make person who is in control room observe the scene of the car, the use of wireless date transmission module completes the control of controller for car and a feedback of car for control-ler.

  19. 基于ATmega16单片机的空气净化器控制系统设计%Design of Air-purifier Control System Based on ATmega16 MCU

    Institute of Scientific and Technical Information of China (English)

    余阿陵; 陈显彬

    2016-01-01

    本文提供一种能使室内空气得到净化的空气净化器设计。以Atmel公司的AVR单片机ATmega16为核心处理器,通过相应气体传感器进行信号检测,由检测结果,实现了空气排风过滤系统的三个不同等级动力驱动的自动控制。该空气净化器还具有PM2.5检测值显示、甲醛检测值显示、紫外线发生器控制、负离子发生器控制、定时与睡眠设置以及遥控等功能。%This article provides a kind of design of air purifier for indoor air purification. The ATmega16 MCU as the core processor is to use,which is one of the products of Atmel company. Through signal detecting with corre-sponding gas sensor,and base on the detection results,it is achieved the air exhaust air filter system of three differ-ent levels of power driven automatic control. At the same time,This air-purifier is equipped with the PM2. 5 detec-tion data display,the CHOH detection data display,the ultraviolet generator control,the negative ion generator con-trol,the time and the sleep setting ,the remote control and other functions.

  20. 基于MCU新型智能励磁仪的设计与实现%Design and implementation of a type of new experimental instrument of ferromagnetic materials based on MCU

    Institute of Scientific and Technical Information of China (English)

    赵继; 朱彦菘; 孙立

    2013-01-01

    提出了一种以现代化的单片机控制技术为基础,结合D/A转换、模拟电子开关、功率放大、液晶显示和串行通信等技术实现对铁磁材料的磁滞回线进行测量的新方法,并在该方法的基础上成功设计并研制出一种新型智能励磁仪,将新仪器与分析仪、上位机等进行联机试验,结果表明新仪器具有更加友好的用户界面,所得实验数据的精度高、可靠性好.同时新仪器具有手动/自动两种工作模式,且可以实现与上位机的数据通信,自动化和智能化程度大大提高.%A new method is presented, which is based on MCU control technology and combined with digital to analog conversion, analog electric switch, power amplifying, liquid crystal display and serial communication technology, to achieve the measurement of the Hysteresis loop. A type of new experimental instrument of Ferromagnetic materials is designed and fabricated successfully based on this new method. Make the new instrument tested with the analysis instrument and the host computer and the result of the test shows the new instrument has more user-friendly interface, the experiment data of the new instrument is more accurate and more reliable. New instrument has a manual/automatic two operating modes and the data communication with the host computeris also can be realized by the new instrument The degree of automation and intelligence is greatly enhanced.

  1. Comparison of Codes and Neutronics Data Used in the United States and Russia for the TOPAZ-2 Nuclear Safety Assessment

    Science.gov (United States)

    Glushkov, Y. S.; Ponomarov-Stepnoy, N. N.; Kompaniets, G. V.; Gomin, Y. A.; Mayorov, L. V.; Lobyntsev, V. A.; Polyakov, D. N.; Sapir, Joe; Pelowitz, Denise; Streetman, J. Robert

    1994-07-01

    The TOPAZ-2 reactor system is a heterogeneous epithermal system fueled with highly-enriched fuel based on uranium oxide, cooled by a sodium-potassium liquid metal (NaK), using a zirconium hydride moderator, with 37 thermionic fuel elements (TFEs) built into the core. The core is surrounded by a radial beryllium reflector which contains rotating regulating drums with moderating segments. An important problem is the guaranteeing of nuclear safety upon the accidental falling of the TOPAZ-2 reactor into water, which leads to the growth of the reactivity of the reactor. It has turned out that it is necessary to use the Monte-Carlo method for the conduct of neutronics calculations of such a complex reactor. In the United States (U.S.) and Russia, different codes based on the Monte-Carlo method are used for calculations - the MCNP code in the U.S., and the MCU-2 code in Russia. The goal of this work is the comparison of the codes and neutronics data used in the U.S. and Russia for the basis of the TOPAZ-2 nuclear safety. With this goal, a joint computer model benchmark of the TOPAZ-2 reactor was developed and the calculations of a series of variants, differing by the presence and absence of water in the reactor cavities and behind the radial reflector, in the position of the regulating drums, in the presence of the radial reflector, etc. were done independently by specialists in both the U.S. and Russia. Along with the reactor calculations, calculations were also done of the nuclei of the core using the MCNP code (U.S.) and the MCU-2 code (Russia). The work done allowed one to obtain results comparing the MCNP code to the MCU-2 code which gave somewhat different results both for the absolute values of Keff and for reactivity effects. In the future it remains to conduct a detailed analysis of the reasons for the discrepancies. For this it is necessary to exchange neutronics data used for TOPAZ-2 reactor calculations in the U.S. and Russia.

  2. Generating Units

    Data.gov (United States)

    Department of Homeland Security — Generating Units are any combination of physically connected generators, reactors, boilers, combustion turbines, and other prime movers operated together to produce...

  3. UNIT, TIBET.

    Science.gov (United States)

    Louisiana Arts and Science Center, Baton Rouge.

    THE UNIT OF STUDY DESCRIBED IN THIS BOOKLET DEALS WITH THE GEOGRAPHY AND HISTORY OF TIBET. THE UNIT COVERS SOME OF THE GENERAL FEATURES OF THE COUNTRY AND THEIR EFFECT UPON THE LIVES OF THE TIBETAN PEOPLE. DISCUSSION QUESTIONS ARE INSERTED TO STIMULATE THOUGHT. THE RELIGION OF TIBET IS DISCUSSED IN RELATION TO ITS INFLUENCE ON THE ART AND CULTURE…

  4. 基于单片机的食用油掺假探测器的设计%Design of edible oil adulterated detector based on MCU

    Institute of Scientific and Technical Information of China (English)

    魏国丰; 任忠先; 董荣杰

    2016-01-01

    食用油是人们日常生活中的必需品。为了获取更高利润,不法分子所做的食用油掺假行为已经严重侵害消费者利益并损害其身体健康。因此,开展简便、快速检测食用油掺假情况仪器设计非常有现实意义。基于电导率测量法原理,利用NE555定时器构成检测电路和STC12C5A60S2单片机构成显示电路,检测食用油电导率变化情况,快速判断食用油是否掺假以及掺假程度。结果表明该设计具有线路简单、成本低、使用方便和工作稳定可靠等特点,可用于食用油掺假的检测初筛阶段。%Edible oil is necessary in people’s daily life .In order to obtain higher profits ,the criminal actions of edible oil adulteration have harmed the benefits of consumers and damaged the health of their bodies seriously .Therefore ,it has very practical significance to design the instrument for simple and rapid detection of edible oil adulterated . In this paper , based on the principle of electric conductivity measurement ,a timer NE555 of detection circuit and STC12C5A60S2 micro control unit display circuit are used to detect the changes of edible oil electric conductivity and quickly determine the edible oil adulteration and degree of adulteration .Results show that the designed circuit is simple with low cost , easy to use ,stable and reliable work ,which can be used for edible oil adulteration detection in the initial screening stage .

  5. Design of an Intelligent Fire-ifghting Car Based on MSP430F169MCU%基于MSP430F169的智能灭火小车设计

    Institute of Scientific and Technical Information of China (English)

    淮文军; 赵双剑; 仲启磊

    2013-01-01

    设计一个基于MSP430F169单片机的智能灭火小车,系统由电机驱动、距离传感器、灰度传感器、火焰传感器模块组成。通过距离传感器判断小车的行驶状态,改变2路PWM信号的占空比驱动左右轮运动,确保小车在规定场地上不碰擦墙壁。当检测到门口白线时,启动火焰传感器检测房间内有无火源。如果检测到火源则进一步调整位置灭火,如果没有发现火源则继续搜索其他房间后返回原点。经试验测试,小车能在规则内自主完成灭火任务。%Based on MSP430F169 MCU,an intelligent fire-fighting car is designed whose system is composed of a motor module,grayscale sensor module,a distance sensor module and a flame sensor module. Six distance sensors control the travelling attitude of the car and the car’s left and right wheels are driven by changing the duty cycle of the 2-channel PWM signals to ensure that the car will not graze walls on its specified venue. The flame sensor is started to search the source of fire on touching the white line at the gate. If the fire is located,it further adjusts its position to extinguish the fire. Otherwise,it continues to search the other rooms and returns where it starts. By testing,the intelligent fire-fighting car can complete its task automatically within the rules.

  6. 用于8051微控制器的片上调试系统的硬件设计%Hardware Design of an Onchip Debug System for 8051 MCU

    Institute of Scientific and Technical Information of China (English)

    肖哲靖; 徐静平; 雷青松; 钟德刚

    2011-01-01

    This paper designed an onchip debug system for industrial 8051 MCU with the process of ASIC and put the all debug fuction into one chip. The debug system not only can make the 8051 halt, run, step into or skip an instruction, but also can read and write all registers, internal and external program memories, data memories and SFRs and set hardware breakpoints in them. A three-wire interface is used by the debug system to connect computer which takes less space than the standard JTAG. It was verified on Xilinx's xc3s400 FPGA and P&R with SMIC 0.18μm technology library. Results shows the system can effectively avoid the disadvantages of traditional debug method based on software simulation or emulator and it also can save much money for users spent on the commercial emulator and improve debug efficiency. The proposed design method is also applicable to other microcontroller.%为工业用8051微控制器设计了一个片上调试系统,将调试功能集成到单片机芯片内部.该系统基于专用集成电路的设计流程设计,不仅具有控制8051单片机挂起、正常运行、单步运行和指令跳转的能力,而且能够读写片内寄存器、内外部数据,程序存储器、特殊功能寄存器的值,并能在其中设置硬件断点.该调试系统使用比工业上的JTAG标准接口占用空间更少的三线接口作为其和计算机的连接通道.系统在Xilinx的xc3s400 FPGA上完成功能验证,利用SMIC0.18μm工艺库完成版图设计.结果表明,系统有效解决基于传统软件调试和仿真器调试方式的弊端,并能省去用户购买商业仿真器的调试花费,减少调试成本,提高调试效率.提出的设计方法同样适用于其他微控制器片上调试系统的设计.

  7. Electronic, optical properties and chemical bonding in six novel 1111-like chalcogenide fluorides AMChF (A=Sr, Ba; M=Cu, Ag; and Ch=S, Se, Te) from first principles calculations

    Energy Technology Data Exchange (ETDEWEB)

    Bannikov, V.V.; Shein, I.R. [Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg (Russian Federation); Ivanovskii, A.L., E-mail: ivanovskii@ihim.uran.ru [Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg (Russian Federation)

    2012-12-15

    Employing first-principles band structure calculations, we have examined the electronic, optical properties and the peculiarities of the chemical bonding for six newly synthesized layered quaternary 1111-like chalcogenide fluorides SrAgSF, SrAgSeF, SrAgTeF, BaAgSF, BaAgSeF, and SrCuTeF, which are discussed in comparison with some isostructural 1111-like chalcogenide oxides. We found that all of the studied phases AMChF (A=Sr, Ba; M=Cu, Ag; and Ch=S, Se, Te) are semiconductors for which the fitted 'experimental' gaps lie in the interval from 2.23 eV (for SrAgSeF) to 3.07 eV (for SrCuTeF). The near-Fermi states of AMChF are formed exclusively by the valence orbitals of the atoms from the blocks (MCh); thus, these phases belong to the layered materials with 'natural multiple quantum wells'. The bonding in these new AMChF phases is described as a high-anisotropic mixture of ionic and covalent contributions, where ionic M-Ch bonds together with covalent M-Ch and Ch-Ch bonds take place inside blocks (MCh), while inside blocks (AF) and between the adjacent blocks (MCh)/(AF) mainly ionic bonds emerge. - Graphical Abstract: Isoelectronic surface for SrAgSeF and atomic-resolved densities of states for SrAgTeF, and SrCuTeF. Highlights: Black-Right-Pointing-Pointer Very recently six new layered 1111-like chalcogenide fluorides AMChF were synthesized. Black-Right-Pointing-Pointer Electronic, optical properties for AMChF phases were examined from first principles. Black-Right-Pointing-Pointer All these materials are characterized as non-magnetic semiconductors. Black-Right-Pointing-Pointer Bonding is highly anisotropic and includes ionic and covalent contributions. Black-Right-Pointing-Pointer Introduction of magnetic ions in AMChF is proposed for search of novel magnetic materials.

  8. APortable InspectionApparatus forTrain Temporary Speed Restriction Based onAVR MCU%基于AVR单片机的列车临时限速手持巡检设备

    Institute of Scientific and Technical Information of China (English)

    胡磊; 吴宗泽

    2014-01-01

    近年来为提高列车安全运行,列车临时限速技术被应用到铁路系统,手持巡检设备是临时限速系统的重要组成部分。列车临时限速是指铁道线路固定限速之外的、具有时效性的限速。本文介绍了一种基于AVR单片机ATmega1280处理器的列车临时限速手持巡检设备的工作原理及主要功能。该设备通过ZigBee无线通信技术,准确及时获取布置在铁路上的RFID(射频识别)标签信息,并结合GSM网络及时将标签数据传输给后台系统,以便在出现紧急情况时,快速反应,及时处理危机,最大限度减少损失。%In recent years, in order to improve the safe operation of the train, the temporary speed limiting technology is applied to the rail system. Hand-held inspection equipment is an important part of the temporary speed limiting system. Temporary Speed Restriction For Train refers to the time-based speed limiting except for the fixed speed restriction of the railway line. This paper introduces the work principles and main functions of a hand-held inspection equipment for the temporary speed limiting based on AVR MCU, Atmega1280 microcomputer. The device uses ZigBee wireless communication technology, accurately and timely gets the RFID tag information on the railway, and combines with the GSM network to timely transfer the real-time label data to the back-end systems, so that in case of emergency, realizing rapid response, timely deal with the crisis, and minimizing the loss.

  9. Turnley Unit

    Data.gov (United States)

    Federal Laboratory Consortium — Facilities at this unit include cattle working pens, hydraulic squeeze chute and electronic scale, a maintenance building, and four hay storage sheds. There is one...

  10. Operable Units

    Data.gov (United States)

    U.S. Environmental Protection Agency — This dataset consists of operable unit data from multiple Superfund sites in U.S. EPA Region 8. These data were acquired from multiple sources at different times and...

  11. Detector Unit

    CERN Multimedia

    1960-01-01

    Original detector unit of the Instituut voor Kernfysisch Onderzoek (IKO) BOL project. This detector unit shows that silicon detectors for nuclear physics particle detection were already developed and in use in the 1960's in Amsterdam. Also the idea of putting 'strips' onto the silicon for high spatial resolution of a particle's impact on the detector were implemented in the BOL project which used 64 of these detector units. The IKO BOL project with its silicon particle detectors was designed, built and operated from 1965 to roughly 1977. Detector Unit of the BOL project: These detectors, notably the ‘checkerboard detector’, were developed during the years 1964-1968 in Amsterdam, The Netherlands, by the Natuurkundig Laboratorium of the N.V. Philips Gloeilampen Fabrieken. This was done in close collaboration with the Instituut voor Kernfysisch Onderzoek (IKO) where the read-out electronics for their use in the BOL Project was developed and produced.

  12. MCU-Based Solar Powered Chicken Feeder

    Directory of Open Access Journals (Sweden)

    Elenor M. Reyes

    2015-12-01

    Full Text Available Poultry is a great potential industry particularly in Batangas Province. The method of feeding chicken needs to be considered as chicken must be fed regularly to be more productive. The conventional method of feeding chicken is the need to continuously provide the food, be alert and conscious on the food remaining in cages and to feed the chickens in a correct period of time to avoid the decline of the production. Growers also find it difficult to manage their businesses effectively because they need to be around the cages every now and then to monitor the poultry. Timing and exactness are the key to provide a uniform time in feeding the chickens. This will benefit the owner of the business in terms of time and effort. Another advantage of this project is in terms of savings to the owner of the poultry business. This technology was designed to automatically feed chickens at a given period of time and to give alarm when the feeds are running out of supply. The power to be supplied to this prototype will be drawn from the sun by means of solar panels and will be stored in typical car battery. The feeds will be stored in a container and evenly distributed by using a conveyor to the feeding basin of the poultry. It will be more efficient than manual conventional way of feeding because less effort will be needed in feeding the chickens and less feeds will be wasted. In addition to that, the stored power can also be used for lighting purposes for the growers to save energy and energy bills.

  13. S12ZVM系列:MCU

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    飞思卡尔半导体公司推出S12MagniV16位S12ZVM系列混合信号微控制器。S12ZVM是集成度较高的无刷直流(BLDC)电机控制解决方案,有助于加快从直流(DC)到BLDC电机的过渡。

  14. [Conservation Units.

    Science.gov (United States)

    Texas Education Agency, Austin.

    Each of the six instructional units deals with one aspect of conservation: forests, water, rangeland, minerals (petroleum), and soil. The area of the elementary school curriculum with which each correlates is indicated. Lists of general and specific objectives are followed by suggested teaching procedures, including ideas for introducing the…

  15. [Conservation Units.

    Science.gov (United States)

    Texas Education Agency, Austin.

    Instructional units deal with each aspect of conservation: forests, wildlife, rangelands, water, minerals, and soil. The area of the secondary school curriculum with which each is correlated is indicated. Lists of general and specific objectives are followed by suggested teaching procedures, including ideas for introducing the topic, questions to…

  16. FLYING UNITED

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Apart from selling hundreds of airplanes to China, Boeing buys locally made aircraft parts and transfers technology, in the true spirit of partnership Whenever Boeing's senior manager hear of a visit by one of China's state leaders, it's no doubt cause for celebration. Since China and the United States established diplomatic ties in 1978, every official trip by China's top statesmen has included a meeting with Boeing that

  17. 台湾铭传大学英语教学模式对应用型本科院校大学英语教学的启发%The implications of the English teaching model at MCU for ELT in Chinese application-oriented university

    Institute of Scientific and Technical Information of China (English)

    郑珺

    2013-01-01

    This paper analyzes the successful factors that contribute to the Application-Oriented Model implemented at MCU (Minchuan University, Taiwan) which is based on an investigation into the teaching of English at this University. In addition, it also provides many suggested solutions to some of the problems in ELT in the application-oriented universities in China.%  本文在对台湾铭传大学的英语教学情况进行跟踪调查的基础上,对其“应用导向”教学模式的成功要素进行了分析,并结合我国应用型本科院校大学英语教学的特点,对这类大学英语教学的一些重要环节提出建议。

  18. United States

    Directory of Open Access Journals (Sweden)

    Stephen Bernow

    1998-12-01

    Full Text Available This paper presents and discusses an integrated set of policies designed to reduce U.S. carbon emissions over the next four decades. This innovation path also aims to promote environmental quality, particularly by reducing emissions of criteria air pollutants, to reduce U.S. dependence on imported oil, and to induce technological innovation and diffusion in energy production and consumption. The innovation path would reduce economy-wide carbon emissions by 26% below baseline projections for 2010 and by 62% below baseline projections for 2030; this translates into 10% below 1990 levels in 2010 and 45% below 1990 levels in 2030. Emissions of criteria pollutants also would be significantly reduced, as would petroleum imports by the United States. Moreover, the innovation path would yield cumulative net savings for the United States of $218 billion (1993 dollars through 2010, or $19 billion on a leveled annual basis, and would result in 800,000 additional jobs nationwide by 2010. Although the overall findings from the innovation path analysis are robust, the results should be taken as indicative, rather than precisely predictive, owing to uncertainties in future costs, prices, technology performance, and consumer behavior.

  19. Lubricating System of Wind Power Generator Sets Based on 51 Microcontroller Unit%基于51单片机的风力发电机组润滑系统

    Institute of Scientific and Technical Information of China (English)

    胡国强

    2013-01-01

    为解决风力发电机组各轴承及齿轮在运行时能自动加注润滑油脂的问题,通过单片机技术开发了一套独立于风电机组主控的润滑自动控制系统,利用单片机对风电机组各轴承及齿轮工作信息的采集并结合预设的工作参数,自动进行内部程序的处理,进而对润滑泵的工作状态加以控制。通过仿真验证,结果表明该系统实现了对风电机组润滑系统的自动控制。%In order to solve the problem of automatically filling in lubrication oil to each bearing and gear of wind power generator unit when they operate, this paper developed a set of lubrication autocontrol system independent of main control of wind power gen-erator sets via 51 microcontroller unit (MCU) technology. The MCU was used to collect the working information of each bearing and gear and to combine pre-set working parameters to automatically carry out internal program processing, which controlled the working state of lubrication pump further. Simulation verification shows that the system has achieved auto-control for the lubrication system of wind power generator sets.

  20. Distribution of Mosquitoes in the Continental United States.

    Science.gov (United States)

    1980-12-01

    ISa . DECLASSIFICATION DOWNGRADING SCHEDULE 16. DISTRIBUTION STATEMENT (of this Report) Approved for public release; distribution unlimited. 17...smithii Anopheles crucians pufletipenflis quadrir7mcu~attus walkeri CoquiZ Zettidia pe rtu rhans pip iens restuans sactinarius territans iJ0 UJSAF

  1. SLUDGE BATCH 5 SIMULANT FLOWSHEET STUDIES

    Energy Technology Data Exchange (ETDEWEB)

    Lambert, D; Michael Stone, M; Bradley Pickenheim, B; David Best, D; David Koopman, D

    2008-10-03

    The Defense Waste Processing Facility (DWPF) will transition from Sludge Batch 4 (SB4) processing to Sludge Batch 5 (SB5) processing in early fiscal year 2009. Tests were conducted using non-radioactive simulants of the expected SB5 composition to determine the impact of varying the acid stoichiometry during the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator (SME) processes. The work was conducted to meet the Technical Task Request (TTR) HLW/DWPF/TTR-2007-0007, Rev. 1 and followed the guidelines of a Task Technical and Quality Assurance Plan (TT&QAP). The flowsheet studies are performed to evaluate the potential chemical processing issues, hydrogen generation rates, and process slurry rheological properties as a function of acid stoichiometry. Initial SB5 flowsheet studies were conducted to guide decisions during the sludge batch preparation process. These studies were conducted with the estimated SB5 composition at the time of the study. The composition has changed slightly since these studies were completed due to changes in the washing plan to prepare SB5 and the estimated SB4 heel mass. Nine DWPF process simulations were completed in 4-L laboratory-scale equipment using both a batch simulant (Tank 51 simulant after washing is complete) and a blend simulant (Tank 40 simulant after Tank 51 transfer is complete). Each simulant had a set of four SRAT and SME simulations at varying acid stoichiometry levels (115%, 130%, 145% and 160%). One additional run was made using blend simulant at 130% acid that included additions of the Actinide Removal Process (ARP) waste prior to acid addition and the Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) waste following SRAT dewatering. There are several parameters that are noteworthy concerning SB5 sludge: (1) This is the first batch DWPF will be processing that contains sludge that has had a significant fraction of aluminum removed through aluminum dissolution. (2) The sludge is high in mercury

  2. Termination unit

    Energy Technology Data Exchange (ETDEWEB)

    Traeholt, Chresten; Willen, Dag; Roden, Mark; Tolbert, Jerry C.; Lindsay, David; Fisher, Paul W.; Nielsen, Carsten Thidemann

    2016-05-03

    Cable end section comprises end-parts of N electrical phases/neutral, and a thermally-insulation envelope comprising cooling fluid. The end-parts each comprises a conductor and are arranged with phase 1 innermost, N outermost surrounded by the neutral, electrical insulation being between phases and N and neutral. The end-parts comprise contacting surfaces located sequentially along the longitudinal extension of the end-section. A termination unit has an insulating envelope connected to a cryostat, special parts at both ends comprising an adapter piece at the cable interface and a closing end-piece terminating the envelope in the end-section. The special parts houses an inlet and/or outlet for cooling fluid. The space between an inner wall of the envelope and a central opening of the cable is filled with cooling fluid. The special part at the end connecting to the cryostat houses an inlet or outlet, splitting cooling flow into cable annular flow and termination annular flow.

  3. Design of voice alarm device for automobile handbrake misuse and overspeed based on MCU%基于单片机的汽车手刹使用不当和超速语音提示装置的设计

    Institute of Scientific and Technical Information of China (English)

    贾萍; 梁文鑫

    2012-01-01

    以STC89C52单片机为核心,综合运用霍尔传感、热释电红外传感、无线传输、数字语音等技术,设计了汽车手刹使用不当和超速行驶语音提示装置.该装置增加了无线发射接收模块编码加载道路限速标准,实现了对汽车的智能限速提示,且安装简单、易于实现.%Voice alarm device for misuse of automobile handbrake and overspeed driving were designed. The device comprehensively applied technologies with Holzer sensing, pyroelectric infrared sensor, wireless transmission and digital voice and so on with STC89C52 MCU as the core, thus increasing standards for speed limit to loading road of wireless transmitting and receiving module code and achieving smart prompt to speed limit of automobile, which was characterized by simple installation and easy realization.

  4. Compact Design of 10 kW Proton Exchange Membrane Fuel Cell Stack Systems with Microcontroller Units

    Directory of Open Access Journals (Sweden)

    Hsiaokang Ma

    2014-04-01

    Full Text Available In this study, fuel, oxidant supply and cooling systems with microcontroller units (MCU are developed in a compact design to fit two 5 kW proton exchange membrane fuel cell (PEMFC stacks. At the initial stage, the testing facility of the system has a large volume (2.0 m × 2.0 m × 1.5 m with a longer pipeline and excessive control sensors for safe testing. After recognizing the performance and stability of stack, the system is redesigned to fit in a limited space (0.4 m × 0.5 m × 0.8 m. Furthermore, the stack performance is studied under different hydrogen recycling modes. Then, two similar 5 kW stacks are directly coupled with diodes to obtain a higher power output and safe operation. The result shows that the efficiency of the 5 kW stack is 43.46% with a purge period of 2 min with hydrogen recycling and that the hydrogen utilization rate µf is 66.31%. In addition, the maximum power output of the twin-coupled module (a power module with two stacks in electrical cascade/parallel arrangement is 9.52 kW.

  5. Design of a Distributed Control System Using a Personal Computer and Micro Control Units for Humanoid Robots

    Directory of Open Access Journals (Sweden)

    Mitsuhiro Yamano

    2010-01-01

    Full Text Available Problem statement: Humanoid robots have many motors and sensors and many control methods are used to carry out complicated tasks of the robots. Therefore, efficient control systems are required for the robots. Approach: This study presented a distributed control system using a Personal Computer (PC and Micro Control Units (MCUs for humanoid robots. Distributed control systems have the advantages that parallel processing using multiple computers is possible and cables in the system can be short. For the control of the humanoid robots, required functions of the control system were discussed. Based on the discussion, the hardware of the system including a PC and MCUs was proposed. The system was designed to carry out the process of the robot control efficiently. The system can be expanded easily by increasing the number of MCU boards. The software of the system for feedback control of the motors and the communication between the computers was proposed. Flexible switching of motor control methods can be achieved easily. Results: Experiments were performed to show the effectiveness of the system. The sampling frequency of the whole system can be about 0.5 kHz and that in local MCUs can be about 10 kHz. Control method of the motor can be changed during the motion in an experiment controlling four joints of the robot. Conclusion: The results of the experiments showed that the distributed control system proposed in this study is effective for humanoid robots.

  6. Using SI Units in Astronomy

    Science.gov (United States)

    Dodd, Richard

    2011-12-01

    1. Introduction; 2. An introduction to SI units; 3. Dimensional analysis; 4. Unit of angular measure (radian); 5. Unit of time (second); 6. Unit of length (metre); 7. Unit of mass (kilogram); 8. Unit of luminous intensity (candela); 9. Unit of thermodynamic temperature (kelvin); 10. Unit of electric current (ampere); 11. Unit of amount of substance (mole); 12. Astronomical taxonomy; Index.

  7. The Design of Intelligent Temperature Control System Based on MCU IAP15 F2 K61 S2%基于IAP15 F2 K61 S2的智能温度控制系统设计

    Institute of Scientific and Technical Information of China (English)

    王亚娟; 郭丹; 董春梅; 徐荣梦

    2015-01-01

    本文阐述了智能温度控制系统主要实现两部分功能来设计:一是利用温度传感器测量水温,当水温低于设定的温度值时,继电器闭合,加热器加热,待水温升至预定水温时,继电器断开,蜂鸣器报警,停止加热;二是利用液位传感器测量当前液面高度,当液面高度低于设定的液面下限或超出设定的液面上限,蜂鸣器报警。本次设计的核心单片机为IAP15F2K61S2,温度传感器选用防水型DS18B20,液位传感器选用超声波传感器。%In this paper the temperature control system have two main functions. One is the temperature will be measured with temperature sensor, when the temperature is below the set value, the relay is closed and the heater is heating, when the temperature is equal to the set value, the relay open and the buzzer is alarm and the heater is not heating . Secondly, liquid level sensor is measuring the liquid surface height, when the height is lower than set lower limit or exceeds the maximum temperature, the buzzer alarm. The main microcomputer is MCU IAP15F2K61S2, temperature sensor is DS18B20 , liquid level sensor is based on the ultrasonic sensor.

  8. An Efficient Micro Control Unit with a Reconfigurable Filter Design for Wireless Body Sensor Networks (WBSNs

    Directory of Open Access Journals (Sweden)

    Chiung-An Chen

    2012-11-01

    Full Text Available In this paper, a low-cost, low-power and high performance micro control unit (MCU core is proposed for wireless body sensor networks (WBSNs. It consists of an asynchronous interface, a register bank, a reconfigurable filter, a slop-feature forecast, a lossless data encoder, an error correct coding (ECC encoder, a UART interface, a power management (PWM, and a multi-sensor controller. To improve the system performance and expansion abilities, the asynchronous interface is added for handling signal exchanges between different clock domains. To eliminate the noise of various bio-signals, the reconfigurable filter is created to provide the functions of average, binomial and sharpen filters. The slop-feature forecast and the lossless data encoder is proposed to reduce the data of various biomedical signals for transmission. Furthermore, the ECC encoder is added to improve the reliability for the wireless transmission and the UART interface is employed the proposed design to be compatible with wireless devices. For long-term healthcare monitoring application, a power management technique is developed for reducing the power consumption of the WBSN system. In addition, the proposed design can be operated with four different bio-sensors simultaneously. The proposed design was successfully tested with a FPGA verification board. The VLSI architecture of this work contains 7.67-K gate counts and consumes the power of 5.8 mW or 1.9 mW at 100 MHz or 133 MHz processing rate using a TSMC 0.18 μm or 0.13 μm CMOS process. Compared with previous techniques, this design achieves higher performance, more functions, more flexibility and higher compatibility than other micro controller designs.

  9. Malaria Treatment (United States)

    Science.gov (United States)

    ... a CDC Malaria Branch clinician. malaria@cdc.gov Malaria Treatment (United States) Recommend on Facebook Tweet Share Compartir Treatment of Malaria: Guidelines For Clinicians (United States) Download PDF version ...

  10. United Cerebral Palsy

    Science.gov (United States)

    ... be sure to follow us on Twitter . United Cerebral Palsy UCP educates, advocates and provides support services to ... Partners Merz Logo Sprint Relay Copyright © 2015 United Cerebral Palsy 1825 K Street NW Suite 600 Washington, DC ...

  11. Unit Cost Compendium Calculations

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Unit Cost Compendium (UCC) Calculations raw data set was designed to provide for greater accuracy and consistency in the use of unit costs across the USEPA...

  12. Establishing the Intermediate Unit.

    Science.gov (United States)

    Pennsylvania State Dept. of Education, Harrisburg.

    The State of Pennsylvania Act 102 establishes a system of 29 intermediate units, creates intermediate unit boards of directors, spells out their duties and functions, and provides a system of financing their operations. This handbook has been prepared by the Pennsylvania Department of Education to provide intermediate unit boards of directors,…

  13. Unitals in Projective Planes

    CERN Document Server

    Barwick, Susan

    2008-01-01

    Unitals are key structures in projective planes, and have connections with other structures in algebra. This book presents a monograph on unitals embedded in finite projective planes. It offers a survey of the research literature on embedded unitals. It is suitable for graduate students and researchers who want to learn about this topic

  14. Commercial Mobile Device Technology Implementation Implications in United States Marine Corps Processes: A Case Study Approach

    Science.gov (United States)

    2016-09-01

    Martial Arts Program MCRC Marine Corps Recruiting Command MCRD Marine Corps Recruit Depot MCRP Marine Corps Reference Publication MCU Marine Corps... Martial Arts Program (MCMAP), Chemical Biological Radiological & Nuclear (CBRN) training, and annual administrative training. Additionally, the...K., & Garstka, J. J. (1998). Network-centric warfare: Its origin and future. US Naval Institute Proceedings, 124(1), 28–35. Retrieved from http

  15. Design of Display Control System for Quenching Machine Based on MCU%基于单片机淬火机床显示控制仪系统设计

    Institute of Scientific and Technical Information of China (English)

    刘杰; 梅建伟; 周祥成

    2015-01-01

    A new display control system of the quenching machine tool was introduced based on the mi-cro controller unit technology, which communicated with the machine tool detection control system and remote control system by the serial port. The main parameters of the machine tool running were ob-tained and the quenching machine operation was controlled by the display control system. A good inter-active interface was designed with the industrial grade LCD screen. The machine parameters were set and stored through the keyboard. Through a long period use on quenching machine tool, the results show the function parameters meet the design requirements.%介绍了基于单片机技术的新型淬火机床显示控制系统,该系统利用串口分别与机床检测控制系统、远程控制系统通信,获取机床运行的主要参数,并控制机床的运行.系统使用工业级液晶屏设计了良好的人机交互界面,可通过键盘设置机床参数并储存.经长期在淬火机床上使用,结果表明各项功能指标满足设计要求.

  16. Research of the Control System of Automotive Stabilizer Bar Based on MCU%基于单片机的一种车用稳定杆控制系统研究

    Institute of Scientific and Technical Information of China (English)

    孙浩; 赵韩; 黄康; 陈奇

    2012-01-01

    叙述了一种车用稳定杆的控制系统,其采用16位飞思卡尔单片机MC9S12XF512为核心CPU,利用横向加速度传感器、方向盘转角传感器和速度传感器等采集车辆行驶时的一些必要信号,根据车辆行驶的实际工况制定相应的控制策略,通过控制单元实现执行机构及时、合理的动作.系统可以根据车辆的不同需要进行设计,能最大程度保证车辆的安全、舒适行驶.%This paper describes a kind of control system of automotive stabilizer bar. It uses the 16 - bit freescale single - chip microcomputer MC9S12XF512 as the core CPU and several sensors to collect some signals of the vehicle, such as the lateral acceleration sensor, the steering wheel angle sensor, speed sensor, etc. According to the actual working condition of the vehicle we should formulate the corresponding control strategy to control the actuator acting timely and reasonably through the control unit. This system can be designed according to the different needs of the vehicle and it can guarantee the vehicle to run safely and comfortably to the maximum extent.

  17. Freestanding midwifery units versus obstetric units

    DEFF Research Database (Denmark)

    Overgaard, Charlotte; Fenger-Grøn, Morten; Sandall, Jane

    2012-01-01

    women intending to give birth in two freestanding midwifery units (FMU) versus two obstetric units in Denmark differed by level of social disadvantage Methods The study was designed as a cohort study with a matched control group. It included 839 lowrisk women intending to give birth in an FMU, who were...... prospectively and individually matched on nine selected obstetric/socio-economic factors to 839 low-risk women intending OU birth. Educational level was chosen as a proxy for social position. Analysis was by intention-to-treat. Results Women intending to give birth in an FMU had a significantly higher...

  18. Design of numerical control DC current source based on 89C2051 MCU%基于89C2051单片机控制的数控直流电流源设计

    Institute of Scientific and Technical Information of China (English)

    康学福

    2014-01-01

    数字化电源的发展,已经形成了一门综合性的学科。在现代化工农业生产、通信、电子仪器仪表、国防事业以及高新技术的装备中,高可靠性、高效率的电源,是不可缺少的设备之一。该设计采用89C2051单片机作为控制单元,利用X9241数字电位器、模/数转换器与恒流源电路部分构成数控可调的恒流电流源,系统中主要应用了数字电位器,它的输出电压作为恒流源部分的参考电压,该电压通过电压跟随器送入恒流源控制电路,从而实现恒流的输出。输出电流的给定由输入键盘来设定,89C2051通过I2C总线方式与X9241实现数据的传输。显示采用4位LED数码管,显示驱动采用软译码方式。%The digital power supply has formed a comprehensive discipline. The power supply with high reliability and high efficiency is one of the necessary equipments in the modern industry and agriculture production,communication,electronic in-strumentation,national defense and high-tech equipments. 89C2051 single chip microcomputer is used as the control unit in this design. The constant current source with numerical control and adjustability is made up by X9241 digital potentiometer,A/D converter and constant current source circuit. The system is applied mainly to the digital potentiometer. Its output voltage is taken as the reference voltage of the constant current source. The voltage is sent into constant current source control circuit through a voltage follower to achieve the constant current output. The output current is set by the keyboard. The data transmission of 89C2051 is realized by I2C bus and X9241. The four-bit LED nixie tube is adopted for display. The soft decoding mode is em-ployed for display drive.

  19. ENERGY STAR Unit Reports

    Data.gov (United States)

    Department of Housing and Urban Development — These quarterly Federal Fiscal Year performance reports track the ENERGY STAR qualified HOME units that Participating Jurisdictions record in HUD's Integrated...

  20. 基于PIC16 F877单片机的加热炉模糊控制系统设计与研究%Design and research of heating furnace fuzzy control system based on PIC16 F877 MCU

    Institute of Scientific and Technical Information of China (English)

    王晓侃; 上官建林; 朱振伟

    2015-01-01

    针对热处理加热炉具有大惯性、纯滞后等非线性时变的特点,基于精确数学模型的常规PID控制难以保证加热工艺要求。设计一种基于PIC16 F877单片机的加热炉模糊控制系统,具有数据采集、炉温控制以及故障监测等功能,采用规则自寻优的控制算法进行过程控制,对该算法进行了深入的研究,从而实现了对整个加热过程的全自动智能控制。以某加热炉为对象用MATLAB进行了仿真,结果表明该系统控制精度高,超调量小,鲁棒性强,对工业加热炉的控制具有一定的推广价值。%The conventional PID control based on precise mathematical model is difficult to guarantee heating process requirements because the heat treatment furnace with large inertia and time delay of non-linear and time -varying characteristics. Designed the heating furnace fuzzy control system based on PIC16F877 MCU with the functions of data acquisition, furnace temperature control and fault detection. The process control uses the algorithm of self-optimizing rules wihich is studied thoroughly,and the en-tire heating process has realized automatic intelligent control in this way. A furnace for the object was simulated with MATLAB, simulation results show that the control system of high precision, small over-shoot, reliability, wihich has some promotional value for the control of industrial furnace.

  1. 基于PIC16F877A单片机的无线遥控智能小车设计与实现%Design and Realization of Wireless Remote Control Smart Car Based on PIC16F877A MCU

    Institute of Scientific and Technical Information of China (English)

    陆振先; 王倩

    2014-01-01

    The paper designs a wireless remote control smart car based on PIC16F877A MCU. The car operates with two run-modes: wireless remote control run mode and automatic run mode. The wireless remote control run mode is able to make an accurate control within 300 meters with the function of forwardness, backwardness ac-celeration, deceleration, left turn, and right turn .The automatic run mode has the obstacle avoidance in the right and left direction ahead. The wireless control mode adopts the RF technology, which overcomes the disadvantag-es of traditional infrared ray wireless control for the short-distance control and susceptible to interference. The car is equipped with a LCD screen, which displays the current state of the car including run speed, run direc-tion, run mode, etc. The car runs normally and steadily in testing.%设计了基于PIC16F877A单片机的无线遥控智能小车,使其具有无线遥控驾驶和自动驾驶两种模式,无线遥控驾驶模式能在300 m范围内对小车进行高精度控制,并能够实现小车的前进、后退、加速、减速、左转弯、右转弯的遥控功能。自动驾驶模式能够实现小车左右避障功能。无线模块采用射频无线收发技术,克服了传统红外遥控的控制范围小、抗干扰性不高的缺点。在小车上还配备液晶显示屏,能实时显示小车的行驶速度、方向、驾驶模式等信息。

  2. 31 CFR 535.321 - United States; continental United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States; continental United... General Definitions § 535.321 United States; continental United States. The term United States means the United States and all areas under the jurisdiction or authority thereof including the Trust Territory...

  3. 31 CFR 515.321 - United States; continental United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States; continental United... General Definitions § 515.321 United States; continental United States. The term United States means the United States and all areas under the jurisdiction or authority thereof, including the Trust Territory...

  4. 31 CFR 500.321 - United States; continental United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States; continental United... General Definitions § 500.321 United States; continental United States. The term United States means the United States and all areas under the jurisdiction or authority thereof, including U.S. trust...

  5. REACH. Air Conditioning Units.

    Science.gov (United States)

    Garrison, Joe; And Others

    As a part of the REACH (Refrigeration, Electro-Mechanical, Air-Conditioning, Heating) electromechanical cluster, this student manual contains individualized instructional units in the area of air conditioning. The instructional units focus on air conditioning fundamentals, window air conditioning, system and installation, troubleshooting and…

  6. REACH. Air Conditioning Units.

    Science.gov (United States)

    Garrison, Joe; And Others

    As a part of the REACH (Refrigeration, Electro-Mechanical, Air-Conditioning, Heating) electromechanical cluster, this student manual contains individualized instructional units in the area of air conditioning. The instructional units focus on air conditioning fundamentals, window air conditioning, system and installation, troubleshooting and…

  7. Conflict Resolution Unit.

    Science.gov (United States)

    Busselle, Tish

    This 7-day unit, intended for use with secondary students, contains a statement of rationale and objectives, lesson plans, class assignments, teacher and student bibliographies, and suggestions for instructional materials on conflict resolution between individuals, groups, and nations. Among the six objectives listed for the unit are: 1) explain…

  8. REACH. Refrigeration Units.

    Science.gov (United States)

    Snow, Rufus; And Others

    As a part of the REACH (Refrigeration, Electro-Mechanical, Air-Conditioning, Heating) electromechanical cluster, this student manual contains individualized instructional units in the area of refrigeration. The instructional units focus on refrigeration fundamentals, tubing and pipe, refrigerants, troubleshooting, window air conditioning, and…

  9. Unit on Existentialism.

    Science.gov (United States)

    Rowell, Bobby

    1971-01-01

    A unit on existentialism is suggested to counteract the indifferent attitude that students have toward much of the literature with which they are presented. The key to a successful literature unit is immediate and total student involvement. Topics, authors, and works which may be used to arouse student interest are presented. (CK)

  10. United nations Orchestra

    CERN Multimedia

    MusiClub

    MusiClub United nations Orchestra www.ungenevaorchestra.ch An organizing committee has taken the initiative to create an Orchestra of the united nations at Geneva. In the context of this initiative, musicians in the following categories are invited to become members of the Orchestra and the Association: Active or retired staff of International organizations in Geneva; Active or retired employees of Permanent Missions to the United Nations at Geneva; as well as children and spouses of the above persons. For enrolment or for additional information, please contact: un.orchestra@yahoo.com

  11. Does size matter? Animal units and animal unit months

    Science.gov (United States)

    Lamar Smith; Joe Hicks; Scott Lusk; Mike Hemmovich; Shane Green; Sarah McCord; Mike Pellant; John Mitchell; Judith Dyess; Jim Sprinkle; Amanda Gearhart; Sherm Karl; Mike Hannemann; Ken Spaeth; Jason Karl; Matt Reeves; Dave Pyke; Jordan Spaak; Andrew Brischke; Del Despain; Matt Phillippi; Dave Weixelmann; Alan Bass; Jessie Page; Lori Metz; David Toledo; Emily Kachergis

    2017-01-01

    The concepts of animal units, animal unit months, and animal unit equivalents have long been used as standards for range management planning, estimating stocking rates, reporting actual use, assessing grazing fees, ranch appraisal, and other purposes. Increasing size of cattle on rangelands has led some to suggest that the definition of animal units and animal unit...

  12. Tax Unit Boundaries

    Data.gov (United States)

    Kansas Data Access and Support Center — The Statewide GIS Tax Unit boundary file was created through a collaborative partnership between the State of Kansas Department of Revenue Property Valuation...

  13. United Mitochondrial Disease Foundation

    Science.gov (United States)

    ... Other Ways to Give Matching Gifts Donate Your Car Online Options United Way Close About UMDF Our ... Rights Reserved | UMDF Donor Privacy Policy Facebook Twitter Google+ Youtube Vimeo Instagram Email STAY UPDATED! Join the ...

  14. Voltage verification unit

    Science.gov (United States)

    Martin, Edward J.

    2008-01-15

    A voltage verification unit and method for determining the absence of potentially dangerous potentials within a power supply enclosure without Mode 2 work is disclosed. With this device and method, a qualified worker, following a relatively simple protocol that involves a function test (hot, cold, hot) of the voltage verification unit before Lock Out/Tag Out and, and once the Lock Out/Tag Out is completed, testing or "trying" by simply reading a display on the voltage verification unit can be accomplished without exposure of the operator to the interior of the voltage supply enclosure. According to a preferred embodiment, the voltage verification unit includes test leads to allow diagnostics with other meters, without the necessity of accessing potentially dangerous bus bars or the like.

  15. Cereal Crops Research Unit

    Data.gov (United States)

    Federal Laboratory Consortium — The mission of the Cereal Crops Research Unit is to 1) conduct basic research to identify and understand the biological processes affecting the growth, development...

  16. Cereal Crops Research Unit

    Data.gov (United States)

    Federal Laboratory Consortium — The mission of the Cereal Crops Research Unit is to 1) conduct basic research to identify and understand the biological processes affecting the growth, development...

  17. Operable Unit Boundaries

    Data.gov (United States)

    U.S. Environmental Protection Agency — This dataset consists of operable unit data from multiple Superfund sites in U.S. EPA Region 8. These data were acquired from multiple sources at different times and...

  18. Insects: An Interdisciplinary Unit

    Science.gov (United States)

    Leger, Heather

    2007-01-01

    The author talks about an interdisciplinary unit on insects, and presents activities that can help students practice communication skills (interpersonal, interpretive, and presentational) and learn about insects with hands-on activities.

  19. Dimensionless Units in the SI

    CERN Document Server

    Mohr, Peter J

    2014-01-01

    The International System of Units (SI) is supposed to be coherent. That is, when a combination of units is replaced by an equivalent unit, there is no additional numerical factor. Here we consider dimensionless units as defined in the SI, {\\it e.g.} angular units like radians or steradians and counting units like radioactive decays or molecules. We show that an incoherence may arise when different units of this type are replaced by a single dimensionless unit, the unit "one", and suggest how to properly include such units into the SI in order to remove the incoherence. In particular, we argue that the radian is the appropriate coherent unit for angles and that hertz is not a coherent unit in the SI. We also discuss how including angular and counting units affects the fundamental constants.

  20. Using SDI-12 with ST microelectronics MCU's

    Energy Technology Data Exchange (ETDEWEB)

    Saari, Alexandra [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Hinzey, Shawn Adrian [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Frigo, Janette Rose [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Proicou, Michael Chris [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Borges, Louis [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-09-03

    ST Microelectronics microcontrollers and processors are readily available, capable and economical processors. Unfortunately they lack a broad user base like similar offerings from Texas Instrument, Atmel, or Microchip. All of these devices could be useful in economical devices for remote sensing applications used with environmental sensing. With the increased need for environmental studies, and limited budgets, flexibility in hardware is very important. To that end, and in an effort to increase open support of ST devices, I am sharing my teams' experience in interfacing a common environmental sensor communication protocol (SDI-12) with ST devices.

  1. 瑞萨在华推广MCU

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    尽管对高端32位MCU的市场需求日益增加,但随着中低端MCU性能的提升以及新应用的拓展,对中低端MCU需求的仍保持增长势态。例如在中国,消费电子产品仍显示出对中低端MCU的强劲需求。根据赛迪顾问数据显示.2004年,8位MCU销售量仍占据中国MCU市场51%的份额。

  2. The mitochondrial calcium uniporter (MCU): molecular identity and physiological roles.

    Science.gov (United States)

    Patron, Maria; Raffaello, Anna; Granatiero, Veronica; Tosatto, Anna; Merli, Giulia; De Stefani, Diego; Wright, Lauren; Pallafacchina, Giorgia; Terrin, Anna; Mammucari, Cristina; Rizzuto, Rosario

    2013-04-12

    The direct measurement of mitochondrial [Ca(2+)] with highly specific probes demonstrated that major swings in organellar [Ca(2+)] parallel the changes occurring in the cytosol and regulate processes as diverse as aerobic metabolism and cell death by necrosis and apoptosis. Despite great biological relevance, insight was limited by the complete lack of molecular understanding. The situation has changed, and new perspectives have emerged following the very recent identification of the mitochondrial Ca(2+) uniporter, the channel allowing rapid Ca(2+) accumulation across the inner mitochondrial membrane.

  3. Battery thermal management unit

    Science.gov (United States)

    Sanders, Nicholas A.

    1989-03-01

    A battery warming device has been designed which uses waste heat from an operating internal combustion engine to warm a battery. A portion of the waste heat is stored in the sensible and latent heat of a phase change type material for use in maintaining the battery temperature after the engine is shut off. The basic design of the device consists of a Phase Change Material (PCM) reservoir and a simple heat exchanger connected to the engineer's cooling system. Two types of units were built, tested and field trialed. A strap-on type which was strapped to the side of an automotive battery and was intended for the automotive after-market and a tray type on which a battery or batteries sat. This unit was intended for the heavy duty truck market. It was determined that both types of units increased the average cranking power of the batteries they were applied to. Although there were several design problems with the units such as the need for an automatic thermostatically controlled bypass valve, the overall feeling is that there is a market opportunity for both the strap-on and tray type battery warming units.

  4. Coherence for weak units

    CERN Document Server

    Joyal, André

    2009-01-01

    We define weak units in a semi-monoidal 2-category $\\CC$ as cancellable pseudo-idempotents: they are pairs $(I,\\alpha)$ where $I$ is an object such that tensoring with $I$ from either side constitutes a biequivalence of $\\CC$, and $\\alpha: I \\tensor I \\to I$ is an equivalence in $\\CC$. We show that this notion of weak unit has coherence built in: Theorem A: $\\alpha$ has a canonical associator 2-cell, which automatically satisfies the pentagon equation. Theorem B: every morphism of weak units is automatically compatible with those associators. Theorem C: the 2-category of weak units is contractible if non-empty. Finally we show (Theorem E) that the notion of weak unit is equivalent to the notion obtained from the definition of tricategory: $\\alpha$ alone induces the whole family of left and right maps (indexed by the objects), as well as the whole family of Kelly 2-cells (one for each pair of objects), satisfying the relevant coherence axioms.

  5. Dispersion in unit disks

    CERN Document Server

    Dumitrescu, Adrian

    2009-01-01

    We present two new approximation algorithms with (improved) constant ratios for selecting $n$ points in $n$ unit disks such that the minimum pairwise distance among the points is maximized. (I) A very simple $O(n \\log{n})$-time algorithm with ratio 0.5110 for disjoint unit disks. In combination with an algorithm of Cabello \\cite{Ca07}, it yields a $O(n^2)$-time algorithm with ratio of 0.4487 for dispersion in $n$ not necessarily disjoint unit disks. (II) A more sophisticated LP-based algorithm with ratio 0.6495 for disjoint unit disks that uses a linear number of variables and constraints, and runs in polynomial time. The algorithm introduces a novel technique which combines linear programming and projections for approximating distances. The previous best approximation ratio for disjoint unit disks was 1/2. Our results give a partial answer to an open question raised by Cabello \\cite{Ca07}, who asked whether 1/2 could be improved.

  6. Signal processing unit

    Energy Technology Data Exchange (ETDEWEB)

    Boswell, J.

    1983-01-01

    The architecture of the signal processing unit (SPU) comprises an ROM connected to a program bus, and an input-output bus connected to a data bus and register through a pipeline multiplier accumulator (pmac) and a pipeline arithmetic logic unit (palu), each associated with a random access memory (ram1,2). The system pulse frequency is from 20 mhz. The pmac is further detailed, and has a capability of 20 mega operations per second. There is also a block diagram for the palu, showing interconnections between the register block (rbl), separator for bus (bs), register (reg), shifter (sh) and combination unit. The first and second rams have formats 64*16 and 32*32 bits, respectively. Further data are a 5-v power supply and 2.5 micron n-channel silicon gate mos technology with about 50000 transistors.

  7. Allocating multiple units

    DEFF Research Database (Denmark)

    Tranæs, Torben; Krishna, Kala

    2002-01-01

    This paper studies the allocation and rent distribution in multi-unit, combinatorial-bid auctions under complete information. We focus on the natural multi-unit analogue of the first-price auction, where buyers bid total payments, pay their bids, and where the seller allocates goods to maximize his...... revenue. While there are many equilibria in this auction, only efficient equilibria remain when the truthful equilibrium restriction of the menu-auction literature is used. Focusing on these equilibria we first show that the first-price auction just described is revenue and outcome equivalent to a Vickrey...

  8. United States Attorney Prosecutions

    Science.gov (United States)

    1993-10-01

    Berceda, 572 F.2d 630 (9th Cir. 1978).. A mere request, such as that made by the defendant, is not sufficient; United States v. Trejo- Zambrano , 582 F.2d...a mere request and more than mere speculation that disclosure will be helpful. United States v. Trejo- Zambrano , 582 F.2d 460 (9th Cir. 1978), eect. dt...both known and unknown to the Grand Jury, including Lane Boudreau, Scott Willard Holland, James Allen Halperin, Maria Ximena Erlandsen, Derek Adrian

  9. Women's Rights Unit.

    Science.gov (United States)

    Weiss, Helen; Weigel, Margaret

    Designed for use in the intermediate grades, this interdisciplinary unit helps students examine traditional and modern roles of women. Fourteen lessons focus on women's activities in colonial America, reasons for women's discontent, the women's rights movement of the 1800's, changes in the roles of women, enfranchisement of women, women's role…

  10. Consumer Mathematics. Teaching Units.

    Science.gov (United States)

    North Carolina State Dept. of Public Instruction, Raleigh.

    GRADES OR AGES: Secondary school. SUBJECT MATTER: Consumer mathematics including--money management, transportation, probability, swindles and gyps, insurance, housing, taxes, consumer credit, banks, savings, and investments. ORGANIZATION AND PHYSICAL APPEARANCE: The guide is divided into ten parallel units, one for each of the above areas, which…

  11. United in change

    NARCIS (Netherlands)

    Hanneke Posthumus; Josje den Ridder; Joep de Hart

    2014-01-01

    Original title: Verenigd in verandering The importance of citizens who unite in civil society organisations is broadly recognised. Organisations bind people to each other, to the community and to the political system. How are civil-society organisations in the Netherlands faring? Is there

  12. Outdoorsman, Unit III.

    Science.gov (United States)

    Alberta Dept. of Agriculture, Edmonton.

    The third and final unit of the 4-H Outdoorsman Program covers the most advanced and challenging campcraft skills for 4-H members in British Columbia, Alberta, Saskatchewan and Manitoba. Survival camping (including building shelters and finding food), in-depth map-reading and orienteering, game management, hiking themes and recordkeeping are all…

  13. Sickle Cell Unit.

    Science.gov (United States)

    Canipe, Stephen L.

    Included in this high school biology unit on sickle cell anemia are the following materials: a synopsis of the history of the discovery and the genetic qualities of the disease; electrophoresis diagrams comparing normal, homozygous and heterozygous conditions of the disease; and biochemical characteristics and population genetics of the disease. A…

  14. Whale Teaching Unit.

    Science.gov (United States)

    Peninsula Humane Society, San Mateo, CA.

    Materials in this teaching unit are designed to foster an interest in whale preservation among intermediate grade and junior high school students. Several readings provide background information on various types of whales and the economic value of whales. Student activities include a true and false game, a crossword, and a mobile. A resource list…

  15. Whale Teaching Unit.

    Science.gov (United States)

    Peninsula Humane Society, San Mateo, CA.

    Materials in this teaching unit are designed to foster an interest in whale preservation among intermediate grade and junior high school students. Several readings provide background information on various types of whales and the economic value of whales. Student activities include a true and false game, a crossword, and a mobile. A resource list…

  16. Transfer of manufacturing units

    DEFF Research Database (Denmark)

    Madsen, Erik Skov; Riis, Jens Ove; Sørensen, Brian Vejrum

    2008-01-01

    The ongoing and unfolding relocation of activities is one of the major trends, that calls for attention in the domain of operations management. In particular, prescriptive models outlining: stages of the process, where to locate, and how to establish the new facilities have been studied, while...... and dilemmas to be addressed when transferring manufacturing units....

  17. Laser color recording unit

    Science.gov (United States)

    Jung, E.

    1984-05-01

    A color recording unit was designed for output and control of digitized picture data within computer controlled reproduction and picture processing systems. In order to get a color proof picture of high quality similar to a color print, together with reduced time and material consumption, a photographic color film material was exposed pixelwise by modulated laser beams of three wavelengths for red, green and blue light. Components of different manufacturers for lasers, acousto-optic modulators and polygon mirrors were tested, also different recording methods as (continuous tone mode or screened mode and with a drum or flatbed recording principle). Besides the application for the graphic arts - the proof recorder CPR 403 with continuous tone color recording with a drum scanner - such a color hardcopy peripheral unit with large picture formats and high resolution can be used in medicine, communication, and satellite picture processing.

  18. LIDAR COMBINED SCANNING UNIT

    Directory of Open Access Journals (Sweden)

    V. V. Elizarov

    2016-11-01

    Full Text Available Subject of Research. The results of lidar combined scanning unit development for locating leaks of hydrocarbons are presented The unit enables to perform high-speed scanning of the investigated space in wide and narrow angle fields. Method. Scanning in a wide angular field is produced by one-line scanning path by means of the movable aluminum mirror with a frequency of 20Hz and amplitude of 20 degrees of swing. Narrowband scanning is performed along a spiral path by the deflector. The deflection of the beam is done by rotation of the optical wedges forming part of the deflector at an angle of ±50. The control function of the scanning node is performed by a specialized software product written in C# programming language. Main Results. This scanning unit allows scanning the investigated area at a distance of 50-100 m with spatial resolution at the level of 3 cm. The positioning accuracy of the laser beam in space is 15'. The developed scanning unit gives the possibility to browse the entire investigated area for the time not more than 1 ms at a rotation frequency of each wedge from 50 to 200 Hz. The problem of unambiguous definition of the beam geographical coordinates in space is solved at the software level according to the rotation angles of the mirrors and optical wedges. Lidar system coordinates are determined by means of GPS. Practical Relevance. Development results open the possibility for increasing the spatial resolution of scanning systems of a wide range of lidars and can provide high positioning accuracy of the laser beam in space.

  19. Unit 5. Thermodynamics (Summary)

    OpenAIRE

    Beléndez Vázquez, Augusto

    2012-01-01

    Summary of the "Unit 5. Thermodynamics" of course "Physical Foundations of Engineering I". Degree in Sound and Image Engineering, in Telecommunications. Polytechnic School of the University of Alicante Resumen del "Tema 5. Termodinámica" de la asignatura "Fundamentos Físicos de la Ingeniería I". Grado en Ingeniería en Sonido e Imagen en Telecomunicaciones. Escuela Politécnica Superior. Universidad de Alicante.

  20. UNIT COMMITMENT: A NEW TRUNCATED METHOD OF UNIT ...

    African Journals Online (AJOL)

    NIJOTECH

    limits, minimum up/down times. Other ... incremental heat rate in ₦/hour for unit i ... approaches to treating thermal unit during its ... (d) Load Balance: During each interval of time, k, the .... The unit information and initial conditions are shown in.

  1. Dynamic Torque Calibration Unit

    Science.gov (United States)

    Agronin, Michael L.; Marchetto, Carl A.

    1989-01-01

    Proposed dynamic torque calibration unit (DTCU) measures torque in rotary actuator components such as motors, bearings, gear trains, and flex couplings. Unique because designed specifically for testing components under low rates. Measures torque in device under test during controlled steady rotation or oscillation. Rotor oriented vertically, supported by upper angular-contact bearing and lower radial-contact bearing that floats axially to prevent thermal expansion from loading bearings. High-load capacity air bearing available to replace ball bearings when higher load capacity or reduction in rate noise required.

  2. Small Unit Operations

    Science.gov (United States)

    2007-11-02

    best demonstrated value for small (< AA size) lithium - thionyl - chloride batteries (Halpert 1993). Equation (2-3) shows that the solar power...However, this energy den- sity this is only ~ 3 times larger than the demonstrated performance of the best lithium batteries , and the fuel cells are...Units 13 2.2.2 ASIC Capability 15 2.2.3 Power and Size 17 2.2.4 Cost 19 2.3 Power Sources 20 2.3.1 Batteries 21 2.3.2 Solar Augmentation

  3. Order Units in a *-Algebra

    Indian Academy of Sciences (India)

    Anil K Karn

    2003-02-01

    Order unit property of a positive element in a *-algebra is defined. It is proved that precisely projections satisfy this order theoretic property. This way, unital hereditary *-subalgebras of a *-algebra are characterized.

  4. DS796 California Groundwater Units

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The California Groundwater Units dataset classifies and delineates the State into one of three groundwater based polygon units: (1) those areas defined as alluvial...

  5. Trend of hydraulic units

    Energy Technology Data Exchange (ETDEWEB)

    Deshimaru, Jun' ichi

    1988-11-01

    The gear, vane and piston pumps occupy a more then 90% share in the hydraulic pumps. Comparatively large pumps are mainly variable delivery piston pumps. The piston pumps are comparatively high in output density (output per unit weight), indicating the hydraulic pump in performance, and tend to become higher and higher in it. Though they are mainly 210 to 350kgf/cm/sup 2/ in rated pressure, some of them come to surpass 400kgf/cm/sup 3/ in it. While the progress in computation also requires the high speed operation, high accuracy and other severe conditions for the hydraulic units, which accordingly and increasingly intensify the requirement for hydraulic oil in abrasion resistibility, oxidation stability and response characteristics. While cavitation comes to easily occur, which considerably and disadvantageously influences hydraulic oil in life through degradation, noise level and respondingness. From now on, the development of high performance oil and study of mechanical structure are important. 19 references, 9 figures, 2 tables.

  6. An ISOLDE target unit

    CERN Multimedia

    Maximilien Brice

    2002-01-01

    A good dozen different targets are available for ISOLDE, made of different materials and equipped with different kinds of ion-sources, according to the needs of the experiments. Each separator (GPS: general purpose; HRS: high resolution) has its own target. Because of the high radiation levels, robots effect the target changes, about 80 times per year. In the standard unit shown in picture _01, the target is the cylindrical object in the front. It contains uranium-carbide kept at a temperature of 2200 deg C, necessary for the isotopes to be able to escape. At either end, one sees the heater current leads, carrying 700 A. The Booster beam, some 3E13 protons per pulse, enters the target from left. The evaporated isotope atoms enter a hot-plasma ion source (the black object behind the target). The whole unit sits at 60 kV potential (pulsed in synchronism with the arrival of the Booster beam) which accelerates the ions (away from the viewer) towards one of the 2 separators.

  7. Snakes: An Integrated Unit Plan.

    Science.gov (United States)

    Lawrence, Lisa

    This document presents an integrated unit plan on snakes targeting second grade students. Objectives of the unit include developing concepts of living things, understanding the contribution and importance of snakes to the environment, and making connections between different disciplines. The unit integrates the topic of snakes into the areas of…

  8. Design of hydraulic recuperation unit

    Directory of Open Access Journals (Sweden)

    Jandourek Pavel

    2016-01-01

    Full Text Available This article deals with design and measurement of hydraulic recuperation unit. Recuperation unit consist of radial turbine and axial pump, which are coupled on the same shaft. Speed of shaft with impellers are 6000 1/min. For economic reasons, is design of recuperation unit performed using commercially manufactured propellers.

  9. United Arab Emirates.

    Science.gov (United States)

    1985-02-01

    This discussion of the United Arab Emirates focuses on the following: the people; geography; history; government; political conditions; defense; the economy; foreign relations; and relations between the US and the United Arab Emirates. In 1983 the population was estimated at 1,194,000. In 1984 the annual growth rate was negative. Life expectancy is about 60 years. Fewer than 20% of the population are UAE citizens. Indigenous Emiris are Arab; the rest of the population includes significant numbers of other Arabs -- Palestinians, Egyptians, Jordanians, Yemenis, Omanis, as well as many Iranians, Pakistanis, Indians, and West Europeans, especially in Dubai. The UAE is in the eastern Arabian Peninsula, bounded on the north by the Persian Gulf. European and Arab pirates roamed the Trucial Coast area from the 17th century into the 19th century. Early British expeditions against the pirates led to further campaigns against their headquarters. Piracy continued intermittently until 1835, when the shaikhs agreed not to engage in hostilities at sea. Primarily in reaction to the ambitions of other European countries, the UK and the Trucial States established closer bonds in an 1892 treaty. In 1968 the British government announced its decision, reaffirmed in March 1971, to end the treaty relationship with the gulf shaikhdoms. When the British protective treaty with the Trucial Shaikhdoms ended on December 1, they became fully independent. On December 2, 1971, 6 of them entered into a union called the United Arab Emirates. The 7th, Ras al-Khaimah, joined in early 1972. Administratively, the UAE is a loose federation of 7 emirates, each with its own ruler. The pace at which local government in each emirate is evolving, from traditional to modern, is set primarily by the ruler. Under the provisional constitution of 1971, each emirate reserves considerable powers, including control over mineral rights, taxation, and police powers. In this milieu, the growth of federal powers has

  10. Learning unit: Thin lenses

    Science.gov (United States)

    Nita, L.-S.

    2012-04-01

    Learning unit: Thin lenses "Why objects seen through lenses are sometimes upright and sometimes reversed" Nita Laura Simona National College of Arts and Crafts "Constantin Brancusi", Craiova, Romania 1. GEOMETRIC OPTICS. 13 hours Introduction (models, axioms, principles, conventions) 1. Thin lenses (Types of lenses. Defining elements. Path of light rays through lenses. Image formation. Required physical quantities. Lens formulas). 2. Lens systems (Non-collated lenses. Focalless systems). 3. Human eye (Functioning as an optical system. Sight defects and their corrections). 4. Optical instruments (Characteristics exemplified by a magnifying glass. Paths of light rays through a simplified photo camera. Path of light rays through a classical microscope) (Physics curriculum for the IXth grade/ 2011). This scenario exposes a learning unit based on experimental sequences (defining specific competencies), as a succession of lessons started by noticing a problem whose solution assumes the setup of an experiment under laboratory conditions. Progressive learning of theme objectives are realised with sequential experimental steps. The central cognitive process is the induction or the generalization (development of new knowledge based on observation of examples or counterexamples of the concept to be learnt). Pupil interest in theme objectives is triggered by problem-situations, for example: "In order to better see small objects I need a magnifying glass. But when using a magnifier, small object images are sometimes seen upright and sometimes seen reversed!" Along the way, pupils' reasoning will converge to the idea: "The image of an object through a lens depends on the relative distances among object, lens, and observer". Associated learning model: EXPERIMENT Specific competencies: derived from the experiment model, in agreement with the following learning unit steps I. Evoking - Anticipation: Size of the problem, formulation of hypotheses and planning of experiment. II

  11. Last call for units

    Science.gov (United States)

    Randall, Stuart; Rosen, Ronald; Jones, Clifford; Bean, Leonard W.; Lane, Frank

    2009-09-01

    I am writing with regard to Kevin McGuigan's definition of the darwin unit, Dw, as "the mathematical probability of one undergraduate (or faculty) fatality per practical if the person in question is left to their own devices" (July p60). Although it is clear how the loss of genitals in a laboratory accident would result in a student's removal from the gene pool, McGuigan does not explain how the loss of finger (a 1 mDw event, he suggests) might impede procreation in the slightest. Perhaps McGuigan is confusing Darwin's evolution by natural selection with Lamarck's discredited theory of evolution by the inheritance of acquired characteristics. If so, the gulf between physicists and biologists seems as wide as ever.

  12. Forward Deployed Robotic Unit

    Science.gov (United States)

    Brendle, Bruce E., Jr.; Bornstein, Jonathan A.

    2000-07-01

    Forward Deployed Robotic Unit (FDRU) is a core science and technology objective of the US Army, which will demonstrate the impact of autonomous systems on all phases of future land warfare. It will develop, integrate and demonstrate technology required to achieve robotic and fire control capabilities for future land combat vehicles, e.g., Future Combat Systems, using a system of systems approach that culminates in a field demonstration in 2005. It will also provide the required unmanned assets and conduct the demonstration. Battle Lab Warfighting Experiments and data analysis required to understand the effects of unmanned assets on combat operations. The US Army Tank- Automotive & Armaments Command and the US Army Research Laboratory are teaming in an effort to leverage prior technology achievements in the areas of autonomous mobility, architecture, sensor and robotics system integration; advance the state-of-the-art in these areas; and to provide field demonstration/application of the technologies.

  13. [United theory of aging].

    Science.gov (United States)

    Trubitsyn, A G

    2012-01-01

    In attempts to develop a means of life prolongation the humankind has created more than three hundred theories of the aging; each of them offers the original cause of aging. However, none of them has given practical result by now. The majority of the theories have now only historical interest. There are several different theories that are mainly under consideration currently. They are based on reliable, proven evidence: the free radical theory, the protein error theory, the replicative senescence theory, the theory of reparation weakening, the immunological theory, several versions of neuroendocrinal theories, and programmed aging theory. The theory presented here is based on conception that the life as the phenomenon represents many of the interconnected physical and chemical processes propelled by energy of the mitochondrial bioenergetical machine. Gradual degradation of all vital processes is caused by the programmed decrease in level of bioenergetics. This theory unites all existing theories of aging constructed on authentic facts: it is shown, that such fundamental phenomena accompanying aging process as the increase in level of reactive oxygen species (ROS), the decrease in the general level of protein synthesis, the limitation of cellular dividing (Haiflick limit), decrease in efficiency of reparation mechanisms are caused by bioenergetics attenuation. Each of these phenomena in turn generates a number of harmful secondary processes. Any of the theories bases on one of these destructive phenomena or their combination. Hence, each of them describes one of sides of process of the aging initially caused by programmed decrease of level of bioenergetics. This united theory gives the chance to understand the nature of aging clock and explains a phenomenon of increase in longevity at the condition of food restriction. Failures of attempts to develop means from aging are explained by that the manipulations with the separate secondary phenomena of attenuation of

  14. Mass Transfer And Hydraulic Testing Of The V-05 And V-10 Contactors With The Next Generation Solvent

    Energy Technology Data Exchange (ETDEWEB)

    Herman, D. T.; Duignan, M. R.; Williams, M. R.; Peters, T. B.; Poirier, M. R.; Fondeur, F. F.

    2013-07-31

    The Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) facility is actively pursuing the transition from the current BOBCalixC6 based solvent to the Next Generation Solvent (NGS)-MCU solvent. To support this integration of NGS into the MCU facilities, Savannah River Remediation (SRR) requested that Savannah River National Laboratory (SRNL) perform testing of a blend of the NGS (MaxCalix based solvent) with the current solvent (BOBCalixC6 based solvent) for the removal of cesium (Cs) from the liquid salt waste stream. This testing differs from prior testing by utilizing a blend of BOBCalixC6 based solvent and the NGS with the full (0.05 M) concentration of the MaxCalix as well as a new suppressor, tris(3,7dimethyloctyl) guanidine. Single stage tests were conducted using the full size V-05 and V-10 centrifugal contactors installed at SRNL. These tests were designed to determine the mass transfer and hydraulic characteristics with the NGS solvent blended with the projected heel of the BOBCalixC6 based solvent that will exist in MCU at time of transition. The test program evaluated the amount of organic carryover and the droplet size of the organic carryover phases using several analytical methods. Stage efficiency and mass distribution ratios were determined by measuring Cs concentration in the aqueous and organic phases during single contactor testing. The nominal cesium distribution ratio, D(Cs) measured for extraction ranged from 37-60. The data showed greater than 96% stage efficiency for extraction. No significant differences were noted for operations at 4, 8 or 12 gpm aqueous salt simulant feed flow rates. The first scrub test (contact with weak caustic solution) yielded average scrub D(Cs) values of 3.3 to 5.2 and the second scrub test produced an average value of 1.8 to 2.3. For stripping behavior, the “first stage” D Cs) values ranged from 0.04 to 0.08. The efficiency of the low flow (0.27 gpm aqueous) was calculated to be 82.7%. The Spreadsheet

  15. Friendly units for coldness

    CERN Document Server

    Fraundorf, P

    2006-01-01

    Measures of temperature that center around human experience get lots of use. Of course thermal physics insights of the last century have shown that reciprocal temperature (1/kT) has applications that temperature addresses less well. In addition to taking on negative absolute values under population inversion (e.g. of magnetic spins), bits and bytes turn 1/kT into an informatic measure of the thermal ambient for developing correlations within any complex system. We show here that, in the human-friendly units of bytes and food Calories, water freezes when 1/kT ~200 ZB/Cal or kT ~5 Cal/YB. Casting familiar benchmarks into these terms shows that habitable human space requires coldness values (part of the time, at least) between 0 and 40 ZB/Cal with respect body temperature ~100 degrees F, a range in kT of ~1 Cal/YB. Insight into these physical quantities underlying thermal equilibration may prove useful for budding scientists, as well as the general public, in years ahead.

  16. Portable Virtual Training Units

    Science.gov (United States)

    Malone, Reagan; Johnston, Alan

    2015-01-01

    The Mission Operations Lab initiated a project to design, develop, deliver, test, and validate a unique training system for astronaut and ground support personnel. In an effort to keep training costs low, virtual training units (VTUs) have been designed based on images of actual hardware and manipulated by a touch screen style interface for ground support personnel training. This project helped modernized the training system and materials by integrating them with mobile devices for training when operators or crew are unavailable to physically train in the facility. This project also tested the concept of a handheld remote device to control integrated trainers using International Space Station (ISS) training simulators as a platform. The portable VTU can interface with the full-sized VTU, allowing a trainer co-located with a trainee to remotely manipulate a VTU and evaluate a trainee's response. This project helped determine if it is useful, cost effective, and beneficial for the instructor to have a portable handheld device to control the behavior of the models during training. This project has advanced NASA Marshall Space Flight Center's (MSFC's) VTU capabilities with modern and relevant technology to support space flight training needs of today and tomorrow.

  17. Cohesion in Multinational Military Units

    Science.gov (United States)

    2010-12-10

    He openly admitted his homosexual orientation at a staff meeting; by doing that he clearly stated his guidelines toward gays . He had developed a...of units and consequentially unit effectiveness (Dupuy 1993, 2948). Some nations permit openly gay and lesbian personnel and others may not. Social...may cause less tension. However, for some nations involvement of gays and lesbians in multinational units may be offensive, while other nations are

  18. Inlet Geomorphology Evolution Work Unit

    Science.gov (United States)

    2015-10-30

    the expected behavior and benefits of nearshore placement. Nearshore placement studies have been documented in two journal papers, one technical...Coastal Inlets Research Program Inlet Geomorphology Evolution Work Unit The Inlet Geomorphology Evolution work unit of the CIRP develops methods...sensing measurements, and USACE projects to create valuable guidance that address geomorphic questions. The present focus of the work unit is a common

  19. From stroke unit care to stroke care unit

    NARCIS (Netherlands)

    De Keyser, J; Sulter, G.

    1999-01-01

    In some stroke units continuous monitoring of blood pressure, electrocardiogram, body temperature, and oxygen saturation has become an integral part of the management of acute stroke. In addition, regular measurements of blood glucose are performed. Stroke units equipped with such monitoring facilit

  20. From stroke unit care to stroke care unit

    NARCIS (Netherlands)

    De Keyser, J; Sulter, G.

    1999-01-01

    In some stroke units continuous monitoring of blood pressure, electrocardiogram, body temperature, and oxygen saturation has become an integral part of the management of acute stroke. In addition, regular measurements of blood glucose are performed. Stroke units equipped with such monitoring

  1. GPS Metric Tracking Unit

    Science.gov (United States)

    2008-01-01

    As Global Positioning Satellite (GPS) applications become more prevalent for land- and air-based vehicles, GPS applications for space vehicles will also increase. The Applied Technology Directorate of Kennedy Space Center (KSC) has developed a lightweight, low-cost GPS Metric Tracking Unit (GMTU), the first of two steps in developing a lightweight, low-cost Space-Based Tracking and Command Subsystem (STACS) designed to meet Range Safety's link margin and latency requirements for vehicle command and telemetry data. The goals of STACS are to improve Range Safety operations and expand tracking capabilities for space vehicles. STACS will track the vehicle, receive commands, and send telemetry data through the space-based asset, which will dramatically reduce dependence on ground-based assets. The other step was the Low-Cost Tracking and Data Relay Satellite System (TDRSS) Transceiver (LCT2), developed by the Wallops Flight Facility (WFF), which allows the vehicle to communicate with a geosynchronous relay satellite. Although the GMTU and LCT2 were independently implemented and tested, the design collaboration of KSC and WFF engineers allowed GMTU and LCT2 to be integrated into one enclosure, leading to the final STACS. In operation, GMTU needs only a radio frequency (RF) input from a GPS antenna and outputs position and velocity data to the vehicle through a serial or pulse code modulation (PCM) interface. GMTU includes one commercial GPS receiver board and a custom board, the Command and Telemetry Processor (CTP) developed by KSC. The CTP design is based on a field-programmable gate array (FPGA) with embedded processors to support GPS functions.

  2. Ad valorem versus unit taxes

    DEFF Research Database (Denmark)

    Schröder, Philipp J.H.; Sørensen, Allan

    2010-01-01

    a general equilibrium monopolistic competition model with heterogeneous firms and intra-industry reallocations. We show that the welfare superiority of ad valorem over unit taxes under imperfect competition is not only preserved but amplified. The additional difference between the tools arises because unit...

  3. Fatigue of Concrete Armour Units

    DEFF Research Database (Denmark)

    Sørensen, N. B.; Burcharth, H. F.; Liu, Z.

    1995-01-01

    In the present article fatigue as a possible reason for failure of Dolosse armour units made of plain concrete is discussed.......In the present article fatigue as a possible reason for failure of Dolosse armour units made of plain concrete is discussed....

  4. Multicultural Mini-Units. Elementary.

    Science.gov (United States)

    Flora, Sherrill B.

    The teaching mini-units in this teacher's guide are designed for use with elementary level students. Thematic study units are given for each of the following countries or continents: Africa, Australia, Brazil, Canada, China, England, France, Germany, Greece, India, Israel, Italy, Japan, Mexico, Netherlands, Russia, Spain, Sweden, Thailand, and the…

  5. Studying in the United Kingdom

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The United Kingdom is among the world leaders in recruiting international students.Joanna Burke,Cultural Counselor in the Cultural and Education Section of the British Embassy in China,recently spoke about international students,especially Chinese students in the United Kingdom,with Beijing Review reporter Wang Hairong.

  6. Fatigue of Concrete Armour Units

    DEFF Research Database (Denmark)

    Sørensen, N. B.; Burcharth, H. F.; Liu, Z.

    1995-01-01

    In the present article fatigue as a possible reason for failure of Dolosse armour units made of plain concrete is discussed.......In the present article fatigue as a possible reason for failure of Dolosse armour units made of plain concrete is discussed....

  7. Unit 03 - Introduction to Computers

    OpenAIRE

    Unit 74, CC in GIS; National Center for Geographic Information and Analysis

    1990-01-01

    This unit provides a brief introduction to computer hardware and software. It discusses binary notation, the ASCII coding system and hardware components including the central processing unit (CPU), memory, peripherals and storage media. Software including operating systems, word processors database packages, spreadsheets and statistical packages are briefly described.

  8. Multicultural Mini-Units. Elementary.

    Science.gov (United States)

    Flora, Sherrill B.

    The teaching mini-units in this teacher's guide are designed for use with elementary level students. Thematic study units are given for each of the following countries or continents: Africa, Australia, Brazil, Canada, China, England, France, Germany, Greece, India, Israel, Italy, Japan, Mexico, Netherlands, Russia, Spain, Sweden, Thailand, and the…

  9. Edison Home Community Study Unit.

    Science.gov (United States)

    Lee County School District, Ft. Myers, FL. Dept. of Environmental Education and Instructional Development Services.

    History is not merely events that occurred in the past. The past has influenced the present, as the present will influence the future. The purpose of this community study unit is to provide fourth grade students with an opportunity to investigate some of the history of Lee County, Florida. The unit's focus is on Thomas Edison, who built a home in…

  10. Views of Appalachia: Resource Unit.

    Science.gov (United States)

    Chafin, Shirley R.

    Designed to teach twelfth grade English honors students in Kentucky to think critically, to write creatively, to develop a better self-concept, and to stimulate appreciation and pride for Appalachian literature and culture, this 9-week resource unit features mini-units on (1) Man and His Values; (2) Death; (3) Prejudice; (4) Strip Mining; and (5)…

  11. 7 CFR 1160.104 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 9 2010-01-01 2009-01-01 true United States. 1160.104 Section 1160.104 Agriculture... Definitions § 1160.104 United States. United States means the 48 contiguous states in the continental United States and the District of Columbia, except that United States means the 50 states of the United......

  12. Experimental Design and Application of Large Display Screen System Based on the FPGA and Micro Controller Unit%基于FPGA+MCU的大型LED显示屏系统设计

    Institute of Scientific and Technical Information of China (English)

    杨代勇; 何让平; 黄亚玲; 魏超; 陈炳权

    2011-01-01

    传统的大型LED显示屏系统以单片机MCU、ARM或PLD为核心控制芯片,以FPGA为核心的LED显示屏控制系统设计实现起来比较复杂,并且需要以高性能的FPGA芯片作为基础,而以微处理器为核心的LED显示屏控制系统不够灵活,在改变LED屏幕显示尺寸时,需要大幅修改系统设计,PLD虽在处理速度上有较大提高且能很好地控制多模块显示,但其在时序电路描述方面明显不如FPGA.提出了基于FPGA与单片机MCU的大型LED显示屏系统设计方案,该系统中FPGA为主控制单元,单片机为扫描控制单元,该方案简化电路,提高系统的灵活性和可靠性.实践仿真结果表明:系统显示内容较多,能较好地支持彩色显示,降低了功耗,实现了现场实时控制显示.%The traditional large-scale LED display monitor system takes monolithic integrated circuit MCU,ARM or PLD as the core control chip.It is complex to design the LED display monitor control system which takes FPGA as the core and the high performance FPGA chip is basic for the design.But the LED display monitor control system using microprocessor as the core is not nimble enough,so when changing the LED screen demonstration size,it's necessary to revise the system design a lot.Although PLD has a great enhancement in the processing speed and can control the multi-modules to demonstrate well,it is inferior to FPGA obviously in the sequence circuit description aspect.This paper proposes a large-scale LED display monitor system design plan based on FPGA and the monolithic integrated circuit MCU.In this system FPGA is the focus control unit,and the monolithic integrated circuit is the scanning control unit.This plan may simplify the circuit and enhance the system's flexibility and reliability.The practice simulation result indicates that the system has great demonstration content and can well support the color display and reduce the power loss

  13. Design of Dolos Armour Units

    DEFF Research Database (Denmark)

    Burcharth, H. F.; Liu, Zhou

    1993-01-01

    The slender, complex types of armour units, such as Tetrapods and Dolosse are widely used. Many of the recent failures are such rubble mound breakwaters revealed that there is an imbalance between strength (structural integrity) of the units and the hydraulic stability (resistance to displacements......) of the armour layers. The paper deals only with dolos armour and presents the first design diagrammes and formulae where stresses from static, quasistatic and impact loads are implemented as well as the hydraulic stability. The dolos is treated as a multi shape unit where the thickness can be adjusted...

  14. Geysers Unit 18

    Energy Technology Data Exchange (ETDEWEB)

    Finney, John P.

    1980-12-01

    likely. For all of its risk aversion, SDG&E still remains one of the best potential markets for any energy producer. A recent article in FORBES MAGAZINE found that SDG&E had the third highest price per kilowatt of any utility in the country--5.9{cents} per kilowatt hour for commercial customers. That was in March, 1980. Energy cost adjustment clause increases resulted in an average commercial price per kilowatt hour of 7.2{cents} in May. In July it is expected to climb to 9.2{cents}. SDG&E's rate territory continues to expand at the rate of 5% annually and it is located just over 100 miles from a major source of geothermal heat in the Imperial Valley. But today, SDG&E has no commercial geothermal heat or power purchase contracts with domestic producers. You may ask, ''Why not?'' With no incentive to spend its own money and with a high growth rate, what is SDG&E doing to obtain capacity for its existing and future customers? At the present time, most of SDG&E's capital expenditure for generation is going to the construction of San Onofre Units 2 and 3 , a nuclear project which has been under way for ten years and which is expected to start generating commercial power in 1982 and 1983. San Onofre 2 and 3 will add 440 MW of capacity from a reliable, proven generating technology to SDG&E's system.

  15. Tax_Units_2011_Final

    Data.gov (United States)

    Kansas Data Access and Support Center — The Statewide GIS Tax Unit boundary file was created through a collaborative partnership between the State of Kansas Department of Revenue Property Valuation...

  16. Fundamental units: physics and metrology

    CERN Document Server

    Okun, Lev Borisovich

    2003-01-01

    The problem of fundamental units is discussed in the context of achievements of both theoretical physics and modern metrology. On one hand, due to fascinating accuracy of atomic clocks, the traditional macroscopic standards of metrology (second, metre, kilogram) are giving way to standards based on fundamental units of nature: velocity of light $c$ and quantum of action $h$. On the other hand, the poor precision of gravitational constant $G$, which is widely believed to define the ``cube of theories'' and the units of the future ``theory of everything'', does not allow to use $G$ as a fundamental dimensional constant in metrology. The electromagnetic units in SI are actually based on concepts of prerelativistic classical electrodynamics such as ether, electric permitivity and magnetic permeability of vacuum. Concluding remarks are devoted to terminological confusion which accompanies the progress in basic physics and metrology.

  17. Studying in the United Kingdom

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ Beijing Review:The United Kingdom has many top universities in the world. Could you please tell us how many inter-national students are enrolled in UK institutes of higher learning and how many are from China?

  18. Environmental Control Unit Harness Project

    Science.gov (United States)

    Oliva-Buisson, Yvette J.

    2014-01-01

    Testing four new Environmental Control Unit Harnesses for improved user comfort during SCAPE operations. Phase I, testing in a lab environment, Phase II will continue testing the best candidates in a field environment.

  19. Electronegativity Equalization with Pauling Units.

    Science.gov (United States)

    Bratsch, Steven G.

    1984-01-01

    Discusses electronegativity equalization using Pauling units. Although Pauling has qualitatively defined electronegativity as the power of an atom in a molecule to attract electrons to itself, Pauling electronegativities are treated in this paper as prebonded, isolated-atom quantities. (JN)

  20. Decommissioning of an irradiation unit

    Energy Technology Data Exchange (ETDEWEB)

    Richards, A.G. [Radiation Protection and Safety Services, Univ. of Leeds, Leeds (United Kingdom)

    2000-05-01

    Distributed throughout hospital, research establishments in the United Kingdom and many other countries are Irradiation Units and Teletherapy machines used for either research purposes or treatment of patients for radiotherapy. These Irradiation Units and Teletherapy machines are loaded with radioactive sources of either Cobalt 60 or Caesium 137. The activity of these sources can range from 1 Terabecquerel up to 100 Terabecquerels or more. Where it is possible to load the radioactive sources without removal from the shielded container into a transport package which is suitable for transport decommissioning of a Teletherapy machine is not a major exercise. When the radioactive sources need to be unloaded from the Irradiation Unit or Teletherapy machine the potential exists for very high levels of radiation. The operation outlined in the paper involved the transfer from an Irradiation Unit to a transport package of two 3.25 Terabecquerel sources of Cobalt 60. The operation of the removal and transfer comes within the scope of the United Kingdom Ionising Radiation Regulations 1985 which were made following the Recommendations of the International Commission on Radiological Protection. This paper illustrates a safe method for this operation and how doses received can be kept within ALARA. (author)

  1. United Kingdom: Health System Review.

    Science.gov (United States)

    Cylus, Jonathan; Richardson, Erica; Findley, Lisa; Longley, Marcus; O'Neill, Ciaran; Steel, David

    2015-01-01

    This analysis of the United Kingdom health system reviews recent developments in organization and governance, health financing, health care provision, health reforms and health system performance. It provides an overview of how the national health services operate in the four nations that make up the United Kingdom, as responsibility for organizing health financing and services was devolved from 1997. With devolution, the health systems in the United Kingdom have diverged in the details of how services are organized and paid for, but all have maintained national health services which provide universal access to a comprehensive package of services that are mostly free at the point of use. These health services are predominantly financed from general taxation and 83.5% of total health expenditure in the United Kingdom came from public sources in 2013. Life expectancy has increased steadily across the United Kingdom, but health inequalities have proved stubbornly resistant to improvement, and the gap between the most deprived and the most privileged continues to widen, rather than close. The United Kingdom faces challenges going forward, including how to cope with the needs of an ageing population, how to manage populations with poor health behaviours and associated chronic conditions, how to meet patient expectations of access to the latest available medicines and technologies, and how to adapt a system that has limited resources to expand its workforce and infrastructural capacity so it can rise to these challenges.

  2. 75 FR 5373 - United States Mint

    Science.gov (United States)

    2010-02-02

    ... United States Mint ACTION: Notification of Pricing for 2010 United States Mint Presidential $1 Coin Proof Set. \\TM\\ SUMMARY: The United States Mint is announcing the price of the 2010 United States Mint Presidential $1 Coin Proof Set. The 2010 United States Mint Presidential $1 Coin Proof Set, featuring $1...

  3. 31 CFR 800.225 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 800.225 Section 800... TAKEOVERS BY FOREIGN PERSONS Definitions § 800.225 United States. The term United States or U.S. means the United States of America, the States of the United States, the District of Columbia, and any...

  4. A BASIC CAMERA UNIT FOR MEDICAL PHOTOGRAPHY.

    Science.gov (United States)

    SMIALOWSKI, A; CURRIE, D J

    1964-08-22

    A camera unit suitable for most medical photographic purposes is described. The unit comprises a single-lens reflex camera, an electronic flash unit and supplementary lenses. Simple instructions for use of th's basic unit are presented. The unit is entirely suitable for taking fine-quality photographs of most medical subjects by persons who have had little photographic training.

  5. Some Relationships among Unit Subsystem Characteristics, Unit Task Characteristics, and Unit Effectiveness

    Science.gov (United States)

    1988-10-01

    C.J. (1980) The behavoiral antd affective consequences of performance- relevant situational variables. Organizational Behavior and Human Performance...cies, practices, and procedures facilitate and/or inhibit organizational work unit effectiveness. This dissertation introduces an additional variable...people in an organizational work unit perform rather than a person. Roberts, lulin, and Rousseau (1978) provided an adaptation of Lewin’s work that

  6. Global Units modulo Circular Units : descent without Iwasawa's Main Conjecture

    CERN Document Server

    Belliard, Jean-Robert

    2009-01-01

    Iwasawa's classical asymptotical formula relates the orders of the $p$-parts $X_n$ of the ideal class groups along a $\\ZM_p$-extension $F_\\infty/F$ of a number field $F$, to Iwasawa structural invariants $\\la$ and $\\mu$ attached to the inverse limit $X_\\infty=\\limpro X_n$. It relies on "good" descent properties satisfied by $X_n$. If $F$ is abelian and $F_\\infty$ is cyclotomic it is known that the $p$-parts of the orders of the global units modulo circular units $U_n/C_n$ are asymptotically equivalent to the $p$-parts of the ideal class numbers. This suggests that these quotients $U_n/C_n$, so to speak unit class groups, satisfy also good descent properties. We show this directly, i.e. without using Iwasawa's Main Conjecture.

  7. Unsupervised segmentation with dynamical units.

    Science.gov (United States)

    Rao, A Ravishankar; Cecchi, Guillermo A; Peck, Charles C; Kozloski, James R

    2008-01-01

    In this paper, we present a novel network to separate mixtures of inputs that have been previously learned. A significant capability of the network is that it segments the components of each input object that most contribute to its classification. The network consists of amplitude-phase units that can synchronize their dynamics, so that separation is determined by the amplitude of units in an output layer, and segmentation by phase similarity between input and output layer units. Learning is unsupervised and based on a Hebbian update, and the architecture is very simple. Moreover, efficient segmentation can be achieved even when there is considerable superposition of the inputs. The network dynamics are derived from an objective function that rewards sparse coding in the generalized amplitude-phase variables. We argue that this objective function can provide a possible formal interpretation of the binding problem and that the implementation of the network architecture and dynamics is biologically plausible.

  8. THOR Particle Processing Unit PPU

    Science.gov (United States)

    Federica Marcucci, Maria; Bruno, Roberto; Consolini, Giuseppe; D'Amicis, Raffaella; De Lauretis, Marcello; De Marco, Rossana; De Michelis, Paola; Francia, Patrizia; Laurenza, Monica; Materassi, Massimo; Vellante, Massimo; Valentini, Francesco

    2016-04-01

    Turbulence Heating ObserveR (THOR) is the first mission ever flown in space dedicated to plasma turbulence. On board THOR, data collected by the Turbulent Electron Analyser, the Ion Mass Spectrum analyser and the Cold Solar Wind ion analyser instruments will be processed by a common digital processor unit, the Particle Processing Unit (PPU). PPU architecture will be based on the state of the art space flight processors and will be fully redundant, in order to efficiently and safely handle the data from the numerous sensors of the instruments suite. The approach of a common processing unit for particle instruments is very important for the enabling of an efficient management for correlative plasma measurements, also facilitating interoperation with other instruments on the spacecraft. Moreover, it permits technical and programmatic synergies giving the possibility to optimize and save spacecraft resources.

  9. Ad valorem versus unit taxes

    DEFF Research Database (Denmark)

    Schröder, Philipp J.H.; Sørensen, Allan

    2010-01-01

    Real-world industries are composed from heterogeneous firms and substantial intra-industry reallocations take place, i.e. high productivity firms squeeze out low productivity firms. Previous tax-tool comparisons have not included these central forces of industry structure. This paper examines...... a general equilibrium monopolistic competition model with heterogeneous firms and intra-industry reallocations. We show that the welfare superiority of ad valorem over unit taxes under imperfect competition is not only preserved but amplified. The additional difference between the tools arises because unit...... taxes distort relative prices, which in turn reduces average industry productivity through reallocations (the survival and increased market share of lower productivity firms). Importantly, numerical solutions of the model reveal that the relative welfare loss from using the unit tax increases...

  10. Unit for cleaning drilling muds

    Energy Technology Data Exchange (ETDEWEB)

    Dorosh, M.M.; Dera, Ya.I.; Fesenko, M.M.; Makedonov, N.I.; Surkov, V.T.

    1983-01-01

    A design is proposed for a unit for cleaning drilling muds which includes a settling tank with input sleeve and a sleeve of the purified mud and hydrocyclones. In order to improve the effectiveness of the degree of purification, the unit is equipped with an ejector and sludge filter arranged under the settling tank in the form of a grid installed in the upper part of the settling tank and connected to the sleeve of purified mud, while the inlet sleeve is arranged tangentially. The proposed unit can operate during drilling with the use of muds on water and carbon bases. As a result of its use, the degree of purification of the drilling mud reaches 30-35%; there is an increase in mechanical drilling rate, the service life of the sand-separator and the silt separators and decrease in wear of the pump equipment.

  11. Unit Reconstitutions: Combat Stress as an Indicator of Unit Effectiveness

    Science.gov (United States)

    2014-06-13

    professional military education or writing for trade journals supplemented the brief “reconstitution renaissance ” with scholarly excursus. This literature...United Sates Army, neuropsychiatry in World War II, Vol. II, overseas theatres . Washington, DC: Government Printing Office. 60 Nash, William P. 2007

  12. Auto Body Repair. Supplementary Units. Instructor Key and Student Units.

    Science.gov (United States)

    Daniel, Linda; Muench, James F., Ed.

    These supplementary units are designed to help students with special needs learn and apply auto body repair skills. The material specifically supplements the Auto Body Repair Curriculum Guide (University of Missouri-Columbia 1988), and is intended for instructors serving the occupational needs of various categories of disadvantaged and handicapped…

  13. The Work Unit Information System

    Science.gov (United States)

    1990-03-01

    detl- il 𔃻’ 1hiLS. dIxam.rnt. no.y be- used in conjuctien with tlie video, or !sep1aTate’ly. 114. SUBJECT TERMS 1%. NUMLItH Of 01 AuLAS 12, yi N~I) I T...6145, (202) 274-6817, (AV) 284-6817. 1I 10. WINS AND INPUT WRAP-UP The Army Material Command has implemented its own PC-based work unit input system...extrusion and composite materials . An example of a contract search would be: Find all work units that relate to contract F33615-84-K-2458. An example

  14. AC410 Unit 9 Assignment

    OpenAIRE

    Laynebaril1

    2017-01-01

     AC410 Unit 9 Assignment Click Link Below To Buy: http://hwcampus.com/shop/ac410-unit-9-assignment/   18–29. The CPA firm of Carson & Boggs LLP is performing an internal control audit in accordance with PCAOB Standard No. 5. The partner in charge of the engagement has asked you to explain the process of determining which controls to test. Describe the process, presenting each of the links in this process and a short summary of how the auditors approach each of them. v ...

  15. Comparison Of Digital Radiographic Units

    Science.gov (United States)

    Wang, Yen

    1986-06-01

    A total PACS will be inevitable for radiology practice within several years. To achieve a total PACS for radiology, a satisfactory digital radiographic unit is required, because approximately 65% of digital data for PACS comes from digital radiographs. There are several possibilities for producing digital radiographs, and 3 - 4 companies have been marketing digital radiographic devices. Some data regarding the digital radiographic units on the market are compared. It will aid in assessing the current status and availability of this aspect of development, as well as providing a summary of further development of digital radiographic technology.

  16. On the Unit of Translation

    Institute of Scientific and Technical Information of China (English)

    张曼

    2013-01-01

      The unit of translation has been the focus of debate through the history of translation. Barkhudarov suggests six levels of UT, each level could serve as unit of different levels of translation. Many Chinese translators also expressed their opinions on this issue, but there is no settled answer yet. This paper tends to make a distinction between different texts:ordinary and special. Ordinary ones can adopt the UT of paragraph, while special ones should adopt special UTs according to their own characteristics.

  17. Photovoltaic mounting/demounting unit

    DEFF Research Database (Denmark)

    2014-01-01

    The present invention relates to a photovoltaic arrangement comprising a photovoltaic assembly comprising a support structure defining a mounting surface onto which a photovoltaic module is detachably mounted; and a mounting/demounting unit comprising at least one mounting/demounting apparatus...... which when the mounting/demounting unit is moved along the mounting surface, causes the photovoltaic module to be mounted or demounted to the support structure; wherein the photovoltaic module comprises a carrier foil and wherein a total thickness of the photo voltaic module is below 500 muiotaeta....... The present invention further relates to an associated method for mounting/demounting photovoltaic modules....

  18. "Mexico in Transition." Curriculum Units.

    Science.gov (United States)

    Oregon Univ., Eugene. Foreign Language Resource Center.

    These curriculum units were developed in a National Endowment for the Humanities 1994 summer seminar "Mexico in Transition." The 23 lessons are written in Spanish. Lessons are entitled: (1) "La Migracion Mexicana Vista a Traves del Cuento 'Paso del Norte' de Juan Rulfo" (Jose Jorge Armendariz); (2) "Los Grupos Indigenas de…

  19. Dimensionality and the sample unit

    Science.gov (United States)

    Francis A. Roesch

    2009-01-01

    The sample unit and its implications for the Forest Service, U.S. Department of Agriculture's Forest Inventory and Analysis program are discussed in light of a generalized three-dimensional concept of continuous forest inventories. The concept views the sampled population as a spatial-temporal cube and the sample as a finite partitioning of the cube. The sample...

  20. Semasiological measurements of phraseological units

    Directory of Open Access Journals (Sweden)

    Khavpacheva Oksana Khautievna

    2015-06-01

    Full Text Available The article deals with semantic relations in phraseology in modern English. In particular, the authors attempt to analyze different perspectives on the problem of correlation of concepts such as phraseological variance and synonyms existing in Russian linguistics. In addition, the article reviews and analyzes the nature and mechanism of phraseological variance. Particular attention is paid to the criteria of a particular phraseological unit to variants or synonyms. It substantiates the idea that the most suitable for the modern English language seems the point of view that considers the variance of phraseological unit as a fixed rate of transformation of the language of this unit does not violate its semantic identity. The main content of the study is an analysis of the main types of options phraseological units of modern English language: the structural and grammatical (morphological, syntactic, lexical, lexical and stylistic and of quantitative. The article also examines the characteristics of phraseological synonyms that unlike phraseological variants are built on different images, different logical-conceptual and shades of meaning, scope and use of stylistic coloring.

  1. Compiler validates units and dimensions

    Science.gov (United States)

    Levine, F. E.

    1980-01-01

    Software added to compiler for automated test system for Space Shuttle decreases computer run errors by providing offline validation of engineering units used system command programs. Validation procedures are general, though originally written for GOAL, a free-form language that accepts "English-like" statements, and may be adapted to other programming languages.

  2. Education in the United States

    Institute of Scientific and Technical Information of China (English)

    钱富奎

    2009-01-01

    As might be expected,educational institutions in the United States reflect the nation's basic values,especially the ideal of equality of opportunity.From elementary school through college,Americans believe that everyone deserves an equal opportunity to get a good education.

  3. Unit 23 - History of GIS

    OpenAIRE

    Unit 55, CC in GIS; National Center for Geographic Information and Analysis

    1990-01-01

    This unit provides a very brief review of some important milestones in the development of GIS. It provides early examples of spatial analysis performed with multiple theme maps, then introduces people, applications and systems that were significant in the early days of computerized cartography and spatial analysis.

  4. Professional Cosmetology Practices. Instructional Units.

    Science.gov (United States)

    Hopcus, Sharron; Armstrong, Ivan J.

    This publication is designed to assist the instructor and students in understanding the latest concepts and techniques of the instructional phase of cosmetology programs. The instructional units are in five areas: (1) orientation, (2) professional practices: hair, (3) professional practices: skin and nails, (4) cosmetology science, and (5)…

  5. Tractor Safety. Unit A-9.

    Science.gov (United States)

    Luft, Vernon D.; Backlund, Paul

    This document is a teacher's guide for a unit in tractor and machinery safety for college freshmen. It is intended to be used for 10 hours of instruction for freshmen who are intending to work on or around machinery. Safety hazards directly and indirectly related to many types of machinery are covered in addition to tractors. The objectives of the…

  6. Solar Renewable Energy. Teaching Unit.

    Science.gov (United States)

    Buchanan, Marion; And Others

    This unit develops the concept of solar energy as a renewable resource. It includes: (1) an introductory section (developing understandings of photosynthesis and impact of solar energy); (2) information on solar energy use (including applications and geographic limitations of solar energy use); and (3) future considerations of solar energy…

  7. Trip Report United Arab Emirates

    Energy Technology Data Exchange (ETDEWEB)

    Nakanishi, K; Rodgers, A

    2004-10-06

    Keith Nakanishi and Arthur Rodgers traveled to the United Arab Emirates in February, 2004 to continue an on-going technical collaboration with UAE University and to service the two temporary LLNL seismic stations. Nakanishi and Rodgers then participated in the Gulf Seismic Forum, which was organized by LLNL and sponsored by the University of Sharjah.

  8. "Mexico in Transition." Curriculum Units.

    Science.gov (United States)

    Oregon Univ., Eugene. Foreign Language Resource Center.

    These curriculum units were developed in a National Endowment for the Humanities 1994 summer seminar "Mexico in Transition." The 23 lessons are written in Spanish. Lessons are entitled: (1) "La Migracion Mexicana Vista a Traves del Cuento 'Paso del Norte' de Juan Rulfo" (Jose Jorge Armendariz); (2) "Los Grupos Indigenas de Mexico: Condiciones…

  9. United States Navy DL Perspective

    Science.gov (United States)

    2010-08-10

    United States Navy DL Perspective CAPT Hank Reeves Navy eLearning Project Director 10 August 2010 Report Documentation Page Form ApprovedOMB No...Marine Corps (USMC) Navy eLearning Ongoing Shared with USMC, Coast Guard 9 NeL Help Site https://ile-help.nko.navy.mil/ile/ https://s-ile

  10. "Mexico in Transition." Curriculum Units.

    Science.gov (United States)

    Oregon Univ., Eugene. Foreign Language Resource Center.

    These curriculum units were developed in a National Endowment for the Humanities 1994 summer seminar "Mexico in Transition." The 23 lessons are written in Spanish. Lessons are entitled: (1) "La Migracion Mexicana Vista a Traves del Cuento 'Paso del Norte' de Juan Rulfo" (Jose Jorge Armendariz); (2) "Los Grupos Indigenas de…

  11. Norovirus in the United States

    Centers for Disease Control (CDC) Podcasts

    2013-09-09

    Dr. Aron Hall, a CDC epidemiologist specializing in norovirus, discusses the impact of norovirus in the United States.  Created: 9/9/2013 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 9/17/2013.

  12. Cholera in the United States

    Centers for Disease Control (CDC) Podcasts

    2011-11-08

    Anna Newton, Surveillance Epidemiologist at CDC, discusses cholera that was brought to the United States during an outbreak in Haiti and the Dominican Republic (Hispaniola).  Created: 11/8/2011 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 11/8/2011.

  13. DSP Function Design of High-performance Microcontroller Unit%高性能MCU的DSP功能设计与实现

    Institute of Scientific and Technical Information of China (English)

    张新泉

    2007-01-01

    为了增加MCU IP核的DSP功能,提出把带有FIFO的FIR滤波器嵌入到MCU中,使MCU进行FIR运算的同时,也可以进行控制功能的操作.详细的给出了FIR设计实现方法以及如何把FIR嵌入到MCU中的实现方案,仿真结果表明设计是可行的.

  14. 75 FR 25925 - United States Mint

    Science.gov (United States)

    2010-05-10

    ... United States Mint ACTION: Notification of Citizens Coinage Advisory Committee May 25, 2010 Public Meeting. SUMMARY: Pursuant to United States Code, Title 31, section 5135(b)(8)(C), the United States Mint...: May 25, 2010. Time: 9 a.m. to 12 p.m. Location: 8th Floor Board Room, United States Mint, 801...

  15. 31 CFR 560.307 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 560.307 Section 560.307 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 560.307 United States. The term United States means the United States, including its territories...

  16. 31 CFR 547.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 547.310 Section 547.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 547.310 United States. The term United States means the United States,...

  17. 7 CFR 1250.308 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1250.308 Section 1250.308 Agriculture... Research and Promotion Order Definitions § 1250.308 United States. United States means the 48 contiguous States of the United States of America and the District of Columbia....

  18. 31 CFR 548.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 548.310 Section 548.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....310 United States. The term United States means the United States, its territories and...

  19. 31 CFR 586.318 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 586.318 Section 586...) KOSOVO SANCTIONS REGULATIONS General Definitions § 586.318 United States. The term United States means the United States, its territories and possessions, and all areas under the jurisdiction or...

  20. 7 CFR 1212.31 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1212.31 Section 1212.31 Agriculture..., Consumer Education, and Industry Information Order Definitions § 1212.31 United States. “United States... territories and possessions of the United States....

  1. 31 CFR 543.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 543.310 Section 543.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 543.310 United States. The term United States means the United States, its territories...

  2. 31 CFR 592.311 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 592.311 Section 592... § 592.311 United States. The term United States, when used in the geographic sense, means the several States, the District of Columbia, and any commonwealth, territory, or possession of the United States....

  3. 31 CFR 546.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 546.310 Section 546.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....310 United States. The term United States means the United States, its territories and...

  4. 31 CFR 538.314 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 538.314 Section 538.314 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 538.314 United States. The term United States means the United States, its territories and...

  5. 7 CFR 1205.23 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1205.23 Section 1205.23 Agriculture... Procedures for Conduct of Sign-up Period Definitions § 1205.23 United States. The term United States means the 50 states of the United States of America. Procedures...

  6. 31 CFR 594.313 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 594.313 Section 594.313 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 594.313 United States. The term United States means the United States, its territories...

  7. 31 CFR 588.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 588.310 Section 588.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 588.310 United States. The term United States means the United States, its territories...

  8. 7 CFR 1205.313 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1205.313 Section 1205.313 Agriculture... Research and Promotion Order Definitions § 1205.313 United States. United States means the 50 States of the United States of America....

  9. 31 CFR 593.311 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 593.311 Section 593.311 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... REGULATIONS General Definitions § 593.311 United States. The term United States means the United States,...

  10. 22 CFR 120.13 - United States.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false United States. 120.13 Section 120.13 Foreign... United States. United States, when used in the geographical sense, includes the several states, the Commonwealth of Puerto Rico, the insular possessions of the United States, the District of Columbia,...

  11. 31 CFR 537.318 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 537.318 Section 537.318 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....318 United States. The term United States means the United States, its territories and...

  12. 31 CFR 575.319 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 575.319 Section 575.319 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....319 United States. The term United States means the United States, its territories and...

  13. 31 CFR 595.314 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 595.314 Section 595.314 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 595.314 United States. The term United States means the United States, its territories and...

  14. 31 CFR 596.312 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 596.312 Section 596.312 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 596.312 United States. The term United States means the United States, including...

  15. 31 CFR 587.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 587.310 Section 587...) MILOSEVIC SANCTIONS REGULATIONS General Definitions § 587.310 United States. The term United States means the United States, its territories and possessions, and all areas under the jurisdiction or...

  16. 31 CFR 542.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 542.310 Section 542.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....310 United States. The term United States means the United States, its territories and...

  17. 31 CFR 540.313 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 540.313 Section 540.313 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... REGULATIONS General Definitions § 540.313 United States. The term United States means the United States,...

  18. 7 CFR 1219.26 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1219.26 Section 1219.26 Agriculture..., AND INFORMATION Hass Avocado Promotion, Research, and Information Order Definitions § 1219.26 United States. United States means collectively the several 50 States of the United States, the District...

  19. 31 CFR 597.318 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 597.318 Section 597.318 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 597.318 United States. The term United States means the United States,...

  20. 31 CFR 544.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 544.310 Section 544.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... REGULATIONS General Definitions § 544.310 United States. The term United States means the United States,...

  1. 31 CFR 545.313 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 545.313 Section 545.313 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 545.313 United States. The term United States means the United States, its territories...

  2. 31 CFR 585.316 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 585.316 Section 585.316 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 585.316 United States. The term United States means the United States,...

  3. 7 CFR 65.255 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false United States. 65.255 Section 65.255 Agriculture..., PEANUTS, AND GINSENG General Provisions Definitions § 65.255 United States. United States means the 50... United States....

  4. 31 CFR 536.315 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 536.315 Section 536.315 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 536.315 United States. The term United States means the United States, its territories...

  5. 7 CFR 1150.106 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 9 2010-01-01 2009-01-01 true United States. 1150.106 Section 1150.106 Agriculture... Order Definitions § 1150.106 United States. United States means the 48 contiguous States in the continental United States....

  6. 7 CFR 1206.23 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1206.23 Section 1206.23 Agriculture... INFORMATION Mango Promotion, Research, and Information Order Definitions § 1206.23 United States. United... Rico, and the territories and possessions of the United States....

  7. 31 CFR 541.310 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 541.310 Section 541.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 541.310 United States. The term United States means the United States, its territories and...

  8. 31 CFR 598.317 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 598.317 Section 598.317 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 598.317 United States. The term United States means the United States, its territories...

  9. 31 CFR 551.309 - United States.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 551.309 Section 551.309 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....309 United States. The term United States means the United States, its territories and...

  10. Detailed Analysis of Motor Unit Activity

    DEFF Research Database (Denmark)

    Nikolic, Mile; Sørensen, John Aasted; Dahl, Kristian

    1997-01-01

    System for decomposition of EMG signals intotheir constituent motor unit potentials and their firing patterns.The aim of the system is detailed analysis ofmotor unit variability.......System for decomposition of EMG signals intotheir constituent motor unit potentials and their firing patterns.The aim of the system is detailed analysis ofmotor unit variability....

  11. Bi-Cell Unit for Fuel Cell.

    Science.gov (United States)

    The patent concerns a bi-cell unit for a fuel cell . The bi-cell unit is comprised of two electrode packs. Each of the electrode packs includes an...invention relates in general to a bi-cell unit for a fuel cell and in particular, to a bi-cell unit for a hydrazine-air fuel cell .

  12. 78 FR 64385 - United Nations Day, 2013

    Science.gov (United States)

    2013-10-28

    ... October 28, 2013 Part V The President Proclamation 9045--United Nations Day, 2013 #0; #0; #0; Presidential... Documents#0;#0; #0; #0;Title 3-- #0;The President ] Proclamation 9045 of October 23, 2013 United Nations Day..., 68 years after the adoption of the United Nations Charter, we mark United Nations Day by...

  13. Detailed Analysis of Motor Unit Activity

    DEFF Research Database (Denmark)

    Nikolic, Mile; Sørensen, John Aasted; Dahl, Kristian

    1997-01-01

    System for decomposition of EMG signals intotheir constituent motor unit potentials and their firing patterns.The aim of the system is detailed analysis ofmotor unit variability.......System for decomposition of EMG signals intotheir constituent motor unit potentials and their firing patterns.The aim of the system is detailed analysis ofmotor unit variability....

  14. ISS EPS Orbital Replacement Unit Block Diagrams

    Science.gov (United States)

    Schmitz, Gregory V.

    2001-01-01

    The attached documents are being provided to Switching Power Magazine for information purposes. This magazine is writing a feature article on the International Space Station Electrical Power System, focusing on the switching power processors. These units include the DC-DC Converter Unit (DDCU), the Bi-directional Charge/Discharge Unit (BCDU), and the Sequential Shunt Unit (SSU). These diagrams are high-level schematics/block diagrams depicting the overall functionality of each unit.

  15. Masturbation in the United States.

    Science.gov (United States)

    Das, Aniruddha

    2007-01-01

    Using data from the nationally representative National Health and Social Life Survey, this study queried the correlates of masturbation in the United States in 1992. Among those aged 18-60, 38% (CI, 35-41) of women and 61% (CI, 57-65) of men reported any masturbation over the preceding year. The system of factors underlying masturbation was similar for both genders, consistent with a convergence in gender patterns of sexual expression in the United States. Among both women and men, masturbation responded to a stable sexualized personality pattern, catalyzed by early-life factors and manifested in current sexual traits. Strikingly, the masturbation-partnered sex linkage, often conceptualized either as compensating for unsatisfying sex or complementing a satisfactory sex life, appeared to be bimodal for both genders. For some, masturbation complemented an active and pleasurable sex life, while among others, it compensated for a lack of partnered sex or satisfaction in sex.

  16. Portable Presentation And Instruction Unit

    Science.gov (United States)

    Christman, L.; Hoang, N.

    1994-01-01

    Proposed electronic display unit reminiscent of kiosk serves as portable, interactive, multimedia information terminal. Used as traveling science exhibit, aid for teaching science in schools, or training and skill-refresher device for space flight crews. Provides interactive video and audio displays, including three-dimensional-appearing video simulations. Speeds learning and improves retention by applying principles of scientific visualization. Also helps previously trained but recently unpracticed personnel relearn special skills and procedures quickly.

  17. Drought in Southwestern United States

    Science.gov (United States)

    2007-01-01

    The southwestern United States pined for water in late March and early April 2007. This image is based on data collected by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite from March 22 through April 6, 2007, and it shows the Normalized Difference Vegetation Index, or NDVI, for the period. In this NDVI color scale, green indicates areas of healthier-than-usual vegetation, and only small patches of green appear in this image, near the California-Nevada border and in Utah. Larger areas of below-normal vegetation are more common, especially throughout California. Pale yellow indicates areas with generally average vegetation. Gray areas appear where no data were available, likely due to persistent clouds or snow cover. According to the April 10, 2007, update from the U.S. Drought Monitor, most of the southwestern United Sates, including Utah, Nevada, California, and Arizona, experienced moderate to extreme drought. The hardest hit areas were southeastern California and southwestern Arizona. Writing for the Drought Monitor, David Miskus of the Joint Agricultural Weather Facility reported that March 2007 had been unusually dry for the southwestern United States. While California's and Utah's reservoir storage was only slightly below normal, reservoir storage was well below normal for New Mexico and Arizona. In early April, an international research team published an online paper in Science noting that droughts could become more common for the southwestern United States and northern Mexico, as these areas were already showing signs of drying. Relying on the same computer models used in the Intergovernmental Panel on Climate Change (IPCC) report released in early 2007, the researchers who published in Science concluded that global warming could make droughts more common, not just in the American Southwest, but also in semiarid regions of southern Europe, Mediterranean northern Africa, and the Middle East.

  18. 77 FR 48542 - United States

    Science.gov (United States)

    2012-08-14

    ... outside of the `reaches of the public interest'''); see generally United States v. SBC Commc'ns, Inc., 489... judicial power.'' SBC ] Commc'ns, 489 F. Supp. 2d at 14-15 (citing Microsoft, 56 F.3d at 1462). With... effect of proposed remedies. See, e.g., KeySpan, 763 F. Supp. 2d at 642; SBC Commc'ns, 489 F. Supp. 2d...

  19. President of the United States

    Institute of Scientific and Technical Information of China (English)

    蔡东丽

    2005-01-01

    President of the United States is the chief executive officer of the federal government, the leader of the executive branch1, and the corn man der-in-chief of the armed forces2. The president has the power to make treaties with other nations, with the advice and consent of two-thirds of the Senate3. The president also appoints4, with Senate's consent, diplomatic representatives ,Supreme Court judges5, and many other officials.

  20. Environmental performance reviews: United States

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-01-15

    This book presents OECD assessments and recommendations regarding the United States' effort to manage its environment including air, water nature, and biodiversity to do this in a sustainable manner; and to do this in co-operation with its global neighbours. In particular, it assesses progress made since 1996, when OECD's previous review on the US was done. 40 figs., 21 tabs.

  1. Unit Performance Assessment System Development

    Science.gov (United States)

    1994-08-01

    Overview of the enhanced UPAS ...... . 57 xiv UNIT PERFORMANCE ASSESSMENT SYSTEM DEVELOPMENT Introduccion The networking of combat vehicle simulators...converting SIMNET terrain data from the UNIX format to a DOS format as part of their work on the development of Intelligent Semi-Automated Forces. The...and Social Sciences. (AD A226 956). LB&M Associates (1992). Phase I Small Business Innovative Research (SBIR) Program for Simulation Networkinc Training

  2. Agricultural Water Pricing: United States

    OpenAIRE

    2010-01-01

    In summary, irrigation costs and prices are rising in most regions of the United States, due to a combination of increasing scarcity, changes in public preferences regarding water allocation among competing uses, increasing budget scrutiny in the national and state legislatures, rising energy prices, and increasing awareness of climate change and the potential implications for rainfall and the availability of surface water resources. These issues likely will continue encouraging public offici...

  3. Strategic renewal for business units.

    Science.gov (United States)

    Whitney, J O

    1996-01-01

    Over the past decade, business units have increasingly taken the role of strategy formulation away from corporate headquarters. The change makes sense: business units are closer to customers, competitors, and costs. Nevertheless, business units can fail, just as headquarters once did, by losing their focus on the organization's priorities and capabilities. John Whitney--turnaround expert and professor of management at Columbia University--offers a method for refocusing companies that he calls the strategic-renewal process. The principles behind the process are straightforward, but its execution demands extensive data, rigorous analysis, and the judgment of key decision makers. However, when applied with diligence, it can produce a strategy that yields both growth and profit. To carry out the process, managers must analyze, one by one or in logical groupings, the company's customers, the products it sells, and the services it offers in light of three criteria: strategic importance, significance, and profitability. Does a given customer, product, or service mesh with the organization's goals? Is it significant in terms of current and future revenues? And is it truly profitable when all costs are care fully considered? Customers, products, and services that do not measure up, says the author, must be weeded out relentlessly. Although the process is a painstaking one, the article offers clear thinking on why-and how-to go about it. A series of exhibits takes managers through the questions they need to raise, and two matrices offer Whitney's concentrated wisdom on when to cultivate--and when to prune.

  4. Low cost balancing unit design

    Science.gov (United States)

    Golembiovsky, Matej; Dedek, Jan; Slanina, Zdenek

    2017-06-01

    This article deals with the design of a low-cost balancing system which consist of battery balancing units, accumulator pack units and coordinator unit with interface for higher level of battery management system. This solution allows decentralized mode of operation and the aim of this work is implementation of controlling and diagnostic mechanism into an electric scooter project realized at Technical university of Ostrava. In todays world which now fully enjoys the prime of electromobility, off-grid battery systems and other, it is important to seek the optimal balance between functionality and the economy side of BMS that being electronics which deals with secondary cells of batery packs. There were numerous sophisticated, but not too practical BMS models in the past, such as centralized system or standalone balance modules of individual cells. This article aims at development of standalone balance modules which are able to communicate with the coordinator, adjust their parameters and ensure their cells safety in case of a communication failure. With the current worldwide cutting cost trend in mind, the emphasis was put on the lowest price possible for individual component. The article is divided into two major categories, the first one being desing of power electronics with emphasis on quality, safety (cooling) and also cost. The second part describes development of a communication interface with reliability and cost in mind. The article contains numerous graphs from practical measurements. The outcome of the work and its possible future is defined in the conclusion.

  5. Graphemes are perceptual reading units.

    Science.gov (United States)

    Rey, A; Ziegler, J C; Jacobs, A M

    2000-04-14

    Graphemes are commonly defined as the written representation of phonemes. For example, the word 'BREAD' is composed of the four phonemes /b/, /r/, /e/ and /d/, and consequently, of the four graphemes 'B', 'R', 'EA', and 'D'. Graphemes can thus be considered the minimal 'functional bridges' in the mapping between orthography and phonology. In the present study, we investigated the hypothesis that graphemes are processed as perceptual units by the reading system. If the reading system processes graphemes as units, then detecting a letter in a word should be harder when this letter is embedded in a multi-letter grapheme than when it corresponds to a single-letter grapheme. In Experiment 1A, done in English, participants were slower to detect a target letter in a word when the target letter was embedded in multi-letter grapheme (i.e. 'A' in 'BEACH') than when it corresponded to a single-letter grapheme (i.e. 'A' in 'PLACE'). In Experiment 1B, this effect was replicated in French. In Experiment 2, done in English, this grapheme effect remained when phonemic similarity between the target letter alone and the target letter inside the word was controlled. Together, the results are consistent with the assumption that graphemes are processed as perceptual reading units in alphabetic writing systems such as English or French.

  6. Dixie Valley Bottoming Binary Unit

    Energy Technology Data Exchange (ETDEWEB)

    McDonald, Dale [Terra-Gen Sierra Holdings, LLC, Reno, NV (United States)

    2014-12-21

    This binary plant is the first air cooled, high-output refrigeration based waste heat recovery cycle in the industry. Its working fluid is environmentally friendly and as such, the permits that would be required with a hydrocarbon based cycle are not necessary. The unit is largely modularized, meaning that the unit’s individual skids were assembled in another location and were shipped via truck to the plant site. The Air Cooled Condensers (ACC), equipment piping, and Balance of Plant (BOP) piping were constructed at site. This project further demonstrates the technical feasibility of using low temperature brine for geothermal power utilization. The development of the unit led to the realization of low temperature, high output, and environmentally friendly heat recovery systems through domestic research and engineering. The project generates additional renewable energy, resulting in cleaner air and reduced carbon dioxide emissions. Royalty and tax payments to governmental agencies will increase, resulting in reduced financial pressure on local entities. The major components of the unit were sourced from American companies, resulting in increased economic activity throughout the country.

  7. The First Drinking Simulator Unit

    Directory of Open Access Journals (Sweden)

    Saied Mostafa Moazzami

    2014-03-01

    Full Text Available Introduction: Current Thermal cycling units fail to simulate the drinking behaviors, and oral balancing temperature. They cannot also simulate other oral conditions such as drink coloring, and chemicals like tea, coffee, carbonated and noncarbonated, citrus juices as well as alcoholic and nonalcoholic drinks and also saliva and milk itself. The main objective of this study is to introduce the designing and manufacturing the first Drinking Simulator Unit (DSU that reproduces the thermal, color and chemicalcycling as well as the drinking behavior and oral temperature in lab conditions uniquely. Methods: The invented system generally has two parts: the hardware and the software parts. The hardware consists of the mechanical and electronic parts. The software part is responsible for controlling the heating and cooling systems, electric valves, the pumps, and automatic filling systems of tanks as well as the sensors of the machine. Results: DSU is the first unit can reproduce the thermal, color and chemical cycling as well as the drinking behavior and oral temperature in lab conditions. Different kinds of colored and acidic drinks and also other chemical materials such as bleaching substances as well as detergents and antiseptics used for dentistry, industrial and medical purposes can be tested by DSU. DSU has also to be considered as an appliance performing in-vitro researches on dental structures. Conclusion: The invented system can greatly improve and validate the results of such researches.  

  8. Mass Transfer And Hydraulic Testing Of The V-05 And V-10 Contactors With The Next Generation Solvent

    Energy Technology Data Exchange (ETDEWEB)

    Herman, D. T.; Duignan, M. R.; Williams, M. R.; Peters, T. B.; Poirier, M. R.; Fondeur, F. F.

    2013-07-31

    The Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) facility is actively pursuing the transition from the current BOBCalixC6 based solvent to the Next Generation Solvent (NGS)-MCU solvent. To support this integration of NGS into the MCU facilities, Savannah River Remediation (SRR) requested that Savannah River National Laboratory (SRNL) perform testing of a blend of the NGS (MaxCalix based solvent) with the current solvent (BOBCalixC6 based solvent) for the removal of cesium (Cs) from the liquid salt waste stream. This testing differs from prior testing by utilizing a blend of BOBCalixC6 based solvent and the NGS with the full (0.05 M) concentration of the MaxCalix as well as a new suppressor, tris(3,7dimethyloctyl) guanidine. Single stage tests were conducted using the full size V-05 and V-10 centrifugal contactors installed at SRNL. These tests were designed to determine the mass transfer and hydraulic characteristics with the NGS solvent blended with the projected heel of the BOBCalixC6 based solvent that will exist in MCU at time of transition. The test program evaluated the amount of organic carryover and the droplet size of the organic carryover phases using several analytical methods. Stage efficiency and mass distribution ratios were determined by measuring Cs concentration in the aqueous and organic phases during single contactor testing. The nominal cesium distribution ratio, D(Cs) measured for extraction ranged from 37-60. The data showed greater than 96% stage efficiency for extraction. No significant differences were noted for operations at 4, 8 or 12 gpm aqueous salt simulant feed flow rates. The first scrub test (contact with weak caustic solution) yielded average scrub D(Cs) values of 3.3 to 5.2 and the second scrub test produced an average value of 1.8 to 2.3. For stripping behavior, the “first stage” D Cs) values ranged from 0.04 to 0.08. The efficiency of the low flow (0.27 gpm aqueous) was calculated to be 82.7%. The Spreadsheet

  9. Coin sorting unit; Koka ikkatsu tonyu shori unit

    Energy Technology Data Exchange (ETDEWEB)

    Oyabu, H.; Nishiyama, T.; Iijima, S. [Fuji Electric Co. Ltd., Tokyo (Japan)

    1999-08-10

    There are promising demands for barrier-free vending machines which can easily be used by the aged and the handicapped as well as ordinary people. Fuji Electric had developed an advanced unit for throwing in coins for the new hearty series that can smoothly be used by the aged and the handicapped. Its main advantages are (1) two or more coins can be thrown in together, (2) The port for putting in coins and the port for taking out change are of unified construction and simply adjoin each other, (3) Directional signs in braille are added. (author)

  10. Low intensity beam target unit

    CERN Multimedia

    1976-01-01

    This is a wheel fitted with many targets around its periphery (each with three longitudinally arranged thin rods) of which one is placed into the beam via a rotation of the wheel. Upstream of each target is placed a luminescent screen, aligbed on each target axis and viewed with a TV camera, to make sure that one is hitting the target. This target unit was probably used to study target's behaviour (like beam heating). Gualtiero Del Torre stands on the left, Pierre Gerdil on the right.

  11. Loviisa Unit One: Annealing - healing

    Energy Technology Data Exchange (ETDEWEB)

    Kohopaeae, J.; Virsu, R. [ed.; Henriksson, A. [ed.

    1997-11-01

    Unit 1 of the Loviisa nuclear powerplant was annealed in connection with the refuelling outage in the summer of 1996. This type of heat treatment restored the toughness properties of the pressure vessel weld, which had been embrittled be neutron radiation, so that it is almost equivalent to a new weld. The treatment itself was an ordinary metallurgical procedure that took only a few days. But the material studies that preceded it began over fifteen years ago and have put IVO at the forefront of world-wide expertise in the area of radiation embrittlement

  12. Asymptotic Rayleigh instantaneous unit hydrograph

    Science.gov (United States)

    Troutman, B.M.; Karlinger, M.R.

    1988-01-01

    The instantaneous unit hydrograph for a channel network under general linear routing and conditioned on the network magnitude, N, tends asymptotically, as N grows large, to a Rayleigh probability density function. This behavior is identical to that of the width function of the network, and is proven under the assumption that the network link configuration is topologically random and the link hydraulic and geometric properties are independent and identically distributed random variables. The asymptotic distribution depends only on a scale factor, {Mathematical expression}, where ?? is a mean link wave travel time. ?? 1988 Springer-Verlag.

  13. Enhanced Master Controller Unit Tester

    Science.gov (United States)

    Benson, Patricia; Johnson, Yvette; Johnson, Brian; Williams, Philip; Burton, Geoffrey; McCoy, Anthony

    2007-01-01

    The Enhanced Master Controller Unit Tester (EMUT) software is a tool for development and testing of software for a master controller (MC) flight computer. The primary function of the EMUT software is to simulate interfaces between the MC computer and external analog and digital circuitry (including other computers) in a rack of equipment to be used in scientific experiments. The simulations span the range of nominal, off-nominal, and erroneous operational conditions, enabling the testing of MC software before all the equipment becomes available.

  14. Hovercraft auxiliary power units (APUs)

    Energy Technology Data Exchange (ETDEWEB)

    Russell, B.J.

    1983-08-01

    Auxiliary power units (APU) manufactured by British firms for use in hovercraft are characterized. Both diesel and gas-turbine APUs are found to be well suited to the demands of this application. The design features, dimensions, performance data, and installation requirements are discussed for the SS 90, SS 923, DA-1, BA-1, HM 5, and Gevaudan 9 APUs, as well as the TRS 18 gas-turbine smoke generator. The progress made in improving the fuel efficiency of gas turbines and reducing the weight of diesel engines is considered significant.

  15. Compact monolithic capacitive discharge unit

    Science.gov (United States)

    Roesler, Alexander W.; Vernon, George E.; Hoke, Darren A.; De Marquis, Virginia K.; Harris, Steven M.

    2007-06-26

    A compact monolithic capacitive discharge unit (CDU) is disclosed in which a thyristor switch and a flyback charging circuit are both sandwiched about a ceramic energy storage capacitor. The result is a compact rugged assembly which provides a low-inductance current discharge path. The flyback charging circuit preferably includes a low-temperature co-fired ceramic transformer. The CDU can further include one or more ceramic substrates for enclosing the thyristor switch and for holding various passive components used in the flyback charging circuit. A load such as a detonator can also be attached directly to the CDU.

  16. HIV Testing in the United States

    Science.gov (United States)

    ... HIV/AIDS HIV Testing in the United States HIV Testing in the United States Jun 23, 2017 ... States or for refugees. 27 Insurance Coverage of HIV Testing HIV testing that is “medically necessary” – recommended ...

  17. ARTICLE 106 OF THE UNITED NATIONS CHARTER

    National Research Council Canada - National Science Library

    Theodore M Cooperstein

    2007-01-01

    Toward that end, Articles 42 and 43 of the United Nations Charter posit that member nations would train and dedicate armed forces to be placed at the disposal of the United Nations security Council...

  18. Join Cost for Unit Selection Speech Synthesis

    OpenAIRE

    Vepa, Jithendra

    2004-01-01

    Undoubtedly, state-of-the-art unit selection-based concatenative speech systems produce very high quality synthetic speech. this is due to a large speech database containing many instances of each speech unit, with a varied and natural distribution of prosodic and spectral characteristics. the join cost, which measures how well two units can be joined together is one of the main criteria for selecting appropriate units from this large speech database. The ideal join cost is one that measur...

  19. Oversight Institutions Within the United Nations

    DEFF Research Database (Denmark)

    Pontoppidan, Caroline Aggestam

    2015-01-01

    This article will give a description of the role of internal audit and governance functions within the United Nations system. The United Nations has, during the last 10 years, worked to establish effective oversight services. Oversight, governance and hereunder the internal audit function has been...... a key priority within the United Nations and a crucial ingredient in the Secretary-General’s efforts to reform and strengthen the United Nations to meet the challenges of the 21st century....

  20. IVOA recommendation: Units in the VO

    CERN Document Server

    Demleitner, Markus; Gray, Norman; Louys, Mireille; Ochsenbein, Francois

    2015-01-01

    This document describes a recommended syntax for writing the string representation of unit labels ("VOUnits"). In addition, it describes a set of recognised and deprecated units, which is as far as possible consistent with other relevant standards (BIPM, ISO/IEC and the IAU). The intention is that units written to conform to this specification will likely also be parsable by other well-known parsers. To this end, we include machine-readable grammars for other units syntaxes.

  1. Oversight Institutions Within the United Nations

    DEFF Research Database (Denmark)

    Pontoppidan, Caroline Aggestam

    2015-01-01

    This article will give a description of the role of internal audit and governance functions within the United Nations system. The United Nations has, during the last 10 years, worked to establish effective oversight services. Oversight, governance and hereunder the internal audit function has been...... a key priority within the United Nations and a crucial ingredient in the Secretary-General’s efforts to reform and strengthen the United Nations to meet the challenges of the 21st century....

  2. Fatigue in Breakwater Concrete Armour Units

    DEFF Research Database (Denmark)

    Burcharth, Hans F.

    The reliability of rubble mound breakwaters depends on the hydraulic stability and the mechanical strength of the armour units. The paper deals with the important aspect of fatigue related to the strength of concrete armour units.......The reliability of rubble mound breakwaters depends on the hydraulic stability and the mechanical strength of the armour units. The paper deals with the important aspect of fatigue related to the strength of concrete armour units....

  3. Equivalent Culture-Anchored Units Translation? The Phraseological Units Issue

    Directory of Open Access Journals (Sweden)

    Maciej Paweł Jaskot

    2016-12-01

    Full Text Available Equivalent Culture-Anchored Units Translation? The Phraseological Units Issue This article examines a question that has been of long-standing interest to linguists working in the fields of cross-linguistic phraseology and the translation of idiosyncratic language units, such as phraseological units (PUs. The challenge of translating PUs, which are understood as "patterns sanctioned by a given culture", involves the translation of culturemes. Therefore, a good translator must be able to assess the importance of the elements containing cultural references in the source language while "moving" them to the target language. When translating PUs, it is desirable that interlingual (cross-linguistic equivalence be achieved. The fact that translations of a PU can be very different (the translator can paraphrase the text, creatively change it, or simply eliminate the PU implies that the translational equivalence of PUs must be functional. While a cross-linguistic comparison (and the achievement of translational equivalence of PUs can be made by omitting the form parameter, it is desirable to preserve the extension and semantic structure, the connotative-pragmatic component, and the phrase combinatorics.   Ekwiwalencja jedostek "kulturowo zakotwiczonych"? Kwestia jednostek frazeologicznych Artykuł porusza zagadnienie, które od kilkudziesięciu lat cieszy się zainteresowaniem językoznawców zajmujących się konfrontacją językową frazeologii oraz tłumaczeniem idiosynkratycznych jednostek językowych, takich jak jednostki frazeologiczne (JF. Wyzwaniem podczas tłumaczenia JF, rozumianych jako "wzorce sankcjonowane przez daną kulturę", jawi się konieczność tłumaczenia kulturemów. Tłumacz zatem stoi w obliczu konieczności prawidłowej oceny danego elementu pod względem jego odniesień kulturowych w języku źródłowym podczas przekładania JF na język docelowy. Podczas tłumaczenia JF pożądane jest osiągnięcie międzyjęzykowej (cross

  4. 7 CFR 1280.127 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1280.127 Section 1280.127 Agriculture... INFORMATION ORDER Lamb Promotion, Research, and Information Order Definitions § 1280.127 United States. United States means collectively the 50 States and the District of Columbia....

  5. 7 CFR 1218.22 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1218.22 Section 1218.22 Agriculture... INFORMATION ORDER Blueberry Promotion, Research, and Information Order Definitions § 1218.22 United States. United States means collectively the 50 states, the District of Columbia, the Commonwealth of Puerto...

  6. 7 CFR 1215.20 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1215.20 Section 1215.20 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS... United States. United States means all of the States. Popcorn Board...

  7. 7 CFR 1260.108 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1260.108 Section 1260.108 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS... Promotion and Research Order Definitions § 1260.108 United States. United States means the 50 States and...

  8. 7 CFR 1216.30 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1216.30 Section 1216.30 Agriculture... INFORMATION ORDER Peanut Promotion, Research, and Information Order Definitions § 1216.30 United States. United States means collectively the 50 states, the District of Columbia, the Commonwealth of Puerto...

  9. 7 CFR 1210.315 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1210.315 Section 1210.315 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS... PLAN Watermelon Research and Promotion Plan Definitions § 1210.315 United States. United States...

  10. 7 CFR 1221.32 - United States.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1221.32 Section 1221.32 Agriculture... INFORMATION ORDER Sorghum Promotion, Research, and Information Order Definitions § 1221.32 United States. United States or U.S. means collectively the 50 States, the District of Columbia, the Commonwealth...

  11. Reflections: Mexico and the United States.

    Science.gov (United States)

    Paz, Octavio

    1980-01-01

    Illustrates how Mexico and the United States represent two versions of Western civilization that are profoundly different from one another. Concludes that the United States has always ignored minorities in foreign and domestic policy. Suggests that, to conquer its enemies, the United States must first conquer its historical attitude toward…

  12. Reflections: Mexico and the United States.

    Science.gov (United States)

    Paz, Octavio

    1980-01-01

    Illustrates how Mexico and the United States represent two versions of Western civilization that are profoundly different from one another. Concludes that the United States has always ignored minorities in foreign and domestic policy. Suggests that, to conquer its enemies, the United States must first conquer its historical attitude toward…

  13. Combustion Power Unit--400: CPU-400.

    Science.gov (United States)

    Combustion Power Co., Palo Alto, CA.

    Aerospace technology may have led to a unique basic unit for processing solid wastes and controlling pollution. The Combustion Power Unit--400 (CPU-400) is designed as a turboelectric generator plant that will use municipal solid wastes as fuel. The baseline configuration is a modular unit that is designed to utilize 400 tons of refuse per day…

  14. 77 FR 65459 - United Nations Day, 2012

    Science.gov (United States)

    2012-10-29

    ... Documents#0;#0; ] Proclamation 8893 of October 24, 2012 United Nations Day, 2012 By the President of the... shadows of war, the 51 founding member states of the United Nations came together to take up the new test of forging a lasting peace. In a decade scarred by genocide, the United Nations chose the hope...

  15. 76 FR 66845 - United Nations Day, 2011

    Science.gov (United States)

    2011-10-27

    ... October 27, 2011 Part IV The President Proclamation 8740--United Nations Day, 2011 #0; #0; #0... Nations Day, 2011 By the President of the United States of America A Proclamation In 1945, 51 nations in a world shaken by war signed the Charter of the United Nations. Determined to move beyond an era...

  16. 75 FR 65561 - United Nations Day, 2010

    Science.gov (United States)

    2010-10-26

    ... Documents#0;#0; #0; #0;Title 3-- #0;The President ] Proclamation 8589 of October 22, 2010 United Nations Day, 2010 By the President of the United States of America A Proclamation Sixty-five years ago, 51 nations... peace, justice, and progress. The founders of the United Nations vowed to work together to ensure...

  17. Unit 2: Application Letters & The Job Interview

    OpenAIRE

    Aleson Carbonell, Marian

    2007-01-01

    Unit 2a_ Letters of Application and the CV: Reading the employment section. Unit 2b_Letters of Application and the CV:Writing Letters and the Job Hunting Process. Unit 2c_ Letters of Application and the CV: The Job Interview.

  18. AQA A2 Chemistry Student Unit Guide

    CERN Document Server

    Cross, Margaret

    2010-01-01

    Student Unit Guides are perfect for revision. Each guide is written by an examiner and explains the unit requirements, summarises the relevant unit content and includes a series of specimen questions and answers. There are three sections to each guide:. Introduction - includes advice on how to use the guide, an explanation of the skills being tested by the assessment objectives, an outline of the unit or module and, depending on the unit, suggestions for how to revise effectively and prepare for the examination questions. Content Guidance - provides an examiner's overview of the module's key t

  19. Edexcel AS Physics Student Unit Guide

    CERN Document Server

    Benn, Mike

    2009-01-01

    Student Unit Guides are perfect for revision. Each guide is written by an examiner and explains the unit requirements, summarises the relevant unit content and includes a series of specimen questions and answers. There are three sections to each guide:. Introduction - includes advice on how to use the guide, an explanation of the skills being tested by the assessment objectives, an outline of the unit or module and, depending on the unit, suggestions for how to revise effectively and prepare for the examination questions. Content Guidance - provides an examiner's overview of the module's key t

  20. Edexcel A2 Physics Student Unit Guide

    CERN Document Server

    Benn, Mike

    2010-01-01

    Student Unit Guides are perfect for revision. Each guide is written by an examiner and explains the unit requirements, summarises the relevant unit content and includes a series of specimen questions and answers. There are three sections to each guide:. Introduction - includes advice on how to use the guide, an explanation of the skills being tested by the assessment objectives, an outline of the unit or module and, depending on the unit, suggestions for how to revise effectively and prepare for the examination questions. Content Guidance - provides an examiner's overview of the module's key t

  1. Division Unit for Binary Integer Decimals

    DEFF Research Database (Denmark)

    Lang, Tomas; Nannarelli, Alberto

    2009-01-01

    -recurrence algorithm to BID representation and implement the division unit in standard cell technology. The implementation of the proposed BID division unit is compared to that of a BCD based unit implementing the same algorithm. The comparison shows that for normalized operands the BID unit has the same latency......In this work, we present a radix-10 division unit that is based on the digit-recurrence algorithm and implements binary encodings (binary integer decimal or BID) for significands. Recent decimal division designs are all based on the binary coded decimal (BCD) encoding. We adapt the radix-10 digit...

  2. Sleep in intensive care unit

    DEFF Research Database (Denmark)

    Boyko, Yuliya; Jennum, Poul; Nikolic, Miki

    2017-01-01

    PURPOSE: To determine if improving intensive care unit (ICU) environment would enhance sleep quality, assessed by polysomnography (PSG), in critically ill mechanically ventilated patients. MATERIALS AND METHODS: Randomized controlled trial, crossover design. The night intervention "quiet routine......" protocol was directed toward improving ICU environment between 10pm and 6am. Noise levels during control and intervention nights were recorded. Patients on mechanical ventilation and able to give consent were eligible for the study. We monitored sleep by PSG.The standard (American Association of Sleep...... Medicine) sleep scoring criteria were insufficient for the assessment of polysomnograms. Modified classification for sleep scoring in critically ill patients, suggested by Watson et al. (Crit Care Med 2013;41:1958-1967), was used. RESULTS: Sound level analysis showed insignificant effect...

  3. Asynchronous Capacity per Unit Cost

    CERN Document Server

    Chandar, Venkat; Tse, David

    2010-01-01

    The capacity per unit cost, or equivalently minimum cost to transmit one bit, is a well-studied quantity. It has been studied under the assumption of full synchrony between the transmitter and the receiver. In many applications, such as sensor networks, transmissions are very bursty, with small amounts of bits arriving infrequently at random times. In such scenarios, the cost of acquiring synchronization is significant and one is interested in the fundamental limits on communication without assuming a priori synchronization. In this paper, we show that the minimum cost to transmit B bits of information asynchronously is (B + \\bar{H})k_sync, where k_sync is the synchronous minimum cost per bit and \\bar{H} is a measure of timing uncertainty equal to the entropy for most reasonable arrival time distributions.

  4. Units of measure in clinical information systems.

    Science.gov (United States)

    Schadow, G; McDonald, C J; Suico, J G; Föhring, U; Tolxdorff, T

    1999-01-01

    The authors surveyed existing standard codes for units of measures, such as ISO 2955, ANSI X3.50, and Health Level 7's ISO+. Because these standards specify only the character representation of units, the authors developed a semantic model for units based on dimensional analysis. Through this model, conversion between units and calculations with dimensioned quantities become as simple as calculating with numbers. All atomic symbols for prefixes and units are defined in one small table. Huge permutated conversion tables are not required. This method is also simple enough to be widely implementable in today's information systems. To promote the application of the method the authors provide an open-source implementation of this method in JAVA. All existing code standards for units, however, are incomplete for practical use and require substantial changes to correct their many ambiguities. The authors therefore developed a code for units that is much more complete and free from ambiguities.

  5. Discharge from an emergency department observation unit and a surgical assessment unit

    DEFF Research Database (Denmark)

    Schultz, Helen; Qvist, Niels; Backer Mogensen, Christian;

    2014-01-01

    To investigate the experiences of patients with acute abdominal pain at discharge from an emergency department observation unit compared with discharge from a surgical assessment unit.......To investigate the experiences of patients with acute abdominal pain at discharge from an emergency department observation unit compared with discharge from a surgical assessment unit....

  6. 3 CFR - Waiver of Reimbursement Under the United Nations Participation Act to Support the United Nations...

    Science.gov (United States)

    2010-01-01

    ... 3 The President 1 2010-01-01 2010-01-01 false Waiver of Reimbursement Under the United Nations Participation Act to Support the United Nations/African Union Mission in Darfur Presidential Documents Other... the United Nations Participation Act to Support the United Nations/African Union Mission in...

  7. Malaria Surveillance - United States, 2014.

    Science.gov (United States)

    Mace, Kimberly E; Arguin, Paul M

    2017-05-26

    Malaria in humans is caused by intraerythrocytic protozoa of the genus Plasmodium. These parasites are transmitted by the bite of an infective female Anopheles mosquito. The majority of malaria infections in the United States occur among persons who have traveled to regions with ongoing malaria transmission. However, malaria is occasionally acquired by persons who have not traveled out of the country through exposure to infected blood products, congenital transmission, laboratory exposure, or local mosquitoborne transmission. Malaria surveillance in the United States is conducted to identify episodes of local transmission and to guide prevention recommendations for travelers. This report summarizes cases in persons with onset of illness in 2014 and trends during previous years. Malaria cases diagnosed by blood film, polymerase chain reaction, or rapid diagnostic tests are reported to local and state health departments by health care providers or laboratory staff. Case investigations are conducted by local and state health departments, and reports are transmitted to CDC through the National Malaria Surveillance System, National Notifiable Diseases Surveillance System, or direct CDC consultations. CDC conducts antimalarial drug resistance marker testing on blood samples submitted by health care providers or local or state health departments. Data from these reporting systems serve as the basis for this report. CDC received reports of 1,724 confirmed malaria cases, including one congenital case and two cryptic cases, with onset of symptoms in 2014 among persons in the United States. The number of confirmed cases in 2014 is consistent with the number of confirmed cases reported in 2013 (n = 1,741; this number has been updated from a previous publication to account for delayed reporting for persons with symptom onset occurring in late 2013). Plasmodium falciparum, P. vivax, P. ovale, and P. malariae were identified in 66.1%, 13.3%, 5.2%, and 2.7% of cases, respectively

  8. Generating units performances: power system requirements

    Energy Technology Data Exchange (ETDEWEB)

    Fourment, C.; Girard, N.; Lefebvre, H.

    1994-08-01

    The part of generating units within the power system is more than providing power and energy. Their performance are not only measured by their energy efficiency and availability. Namely, there is a strong interaction between the generating units and the power system. The units are essential components of the system: for a given load profile the frequency variation follows directly from the behaviour of the units and their ability to adapt their power output. In the same way, the voltage at the units terminals are the key points to which the voltage profile at each node of the network is linked through the active and especially the reactive power flows. Therefore, the customer will experience the frequency and voltage variations induced by the units behaviour. Moreover, in case of adverse conditions, if the units do not operate as well as expected or trip, a portion of the system, may be the whole system, may collapse. The limitation of the performance of a unit has two kinds of consequences. Firstly, it may result in an increased amount of not supplied energy or loss of load probability: for example if the primary reserve is not sufficient, a generator tripping may lead to an abnormal frequency deviation, and load may have to be shed to restore the balance. Secondly, the limitation of a unit performance results in an economic over-cost for the system: for instance, if not enough `cheap` units are able to load-following, other units with higher operating costs have to be started up. We would like to stress the interest for the operators and design teams of the units on the one hand, and the operators and design teams of the system on the other hand, of dialog and information exchange, in operation but also at the conception stage, in order to find a satisfactory compromise between the system requirements and the consequences for the generating units. (authors). 11 refs., 4 figs.

  9. Decommissioning: a United Kingdom perspective

    Energy Technology Data Exchange (ETDEWEB)

    Haworth, A.; Reed, D.L.; Bleeze, A. [Health and Safety Executive, London (United Kingdom)

    1995-12-31

    The paper considers the United Kingdom legislative framework relevant to decommissioning of facilities on nuclear licensed sites. It describes the various legislative bodies involved in regulating this activity and the inspectorate concerned. The licensing regime is described in some detail highlighting the UK arrangements whereby a license is granted for the site upon which nuclear facilities are planned or exist. The license remains in place throughout the life of the plant on the site: from initial planning through to the end of decommissioning. A site (of part of) is not de-licensed until it can be stated that there has ceased to be any danger from ionising radiations from anything on the site (or appropriate part of the site). The final part of the paper considers the changes arising from the commercialization of the nuclear power industry in UK and the restatement of the Nuclear Installation Inspectorate`s policy on decommissioning which has arisen as a result of a review made in response to these changes. (author).

  10. The PRIMA Fringe Sensor Unit

    CERN Document Server

    Sahlmann, Johannes; Abuter, Roberto; Accardo, Matteo; Mottini, Sergio; Delplancke, Francoise

    2009-01-01

    The Fringe Sensor Unit (FSU) is the central element of the Phase Referenced Imaging and Micro-arcsecond Astrometry (PRIMA) dual-feed facility and provides fringe sensing for all observation modes, comprising off-axis fringe tracking, phase referenced imaging, and high-accuracy narrow-angle astrometry. It is installed at the Very Large Telescope Interferometer (VLTI) and successfully servoed the fringe tracking loop during the initial commissioning phase. Unique among interferometric beam combiners, the FSU uses spatial phase modulation in bulk optics to retrieve real-time estimates of fringe phase after spatial filtering. A R=20 spectrometer across the K-band makes the retrieval of the group delay signal possible. The FSU was integrated and aligned at the VLTI in summer 2008. It yields phase and group delay measurements at sampling rates up to 2 kHz, which are used to drive the fringe tracking control loop. During the first commissioning runs, the FSU was used to track the fringes of stars with K-band magnitu...

  11. Neurovascular Unit in Chronic Pain

    Directory of Open Access Journals (Sweden)

    Beatrice Mihaela Radu

    2013-01-01

    Full Text Available Chronic pain is a debilitating condition with major socioeconomic impact, whose neurobiological basis is still not clear. An involvement of the neurovascular unit (NVU has been recently proposed. In particular, the blood-brain barrier (BBB and blood-spinal cord barrier (BSCB, two NVU key players, may be affected during the development of chronic pain; in particular, transient permeabilization of the barrier is suggested by several inflammatory- and nerve-injury-based pain models, and we argue that the clarification of molecular BBB/BSCB permeabilization events will shed new light in understanding chronic pain mechanisms. Possible biases in experiments supporting this theory and its translational potentials are discussed. Moving beyond an exclusive focus on the role of the endothelium, we propose that our understanding of the mechanisms subserving chronic pain will benefit from the extension of research efforts to the NVU as a whole. In this view, the available evidence on the interaction between analgesic drugs and the NVU is here reviewed. Chronic pain comorbidities, such as neuroinflammatory and neurodegenerative diseases, are also discussed in view of NVU changes, together with innovative pharmacological solutions targeting NVU components in chronic pain treatment.

  12. Filicide in the United States.

    Science.gov (United States)

    Resnick, Phillip J

    2016-12-01

    In the United States the Accreditation Council of Graduate Medical Education determines the curriculum required for fellows in forensic psychiatry to become board certified as a subspecialist. Areas that must be covered during the one year fellowship include criminal issues, such as insanity; civil issues, such as tort law and Workers' Compensation; legal regulation of psychiatry, such as confidentiality and involuntary hospitalization; and correctional psychiatry issues, such as dual agency and prisoner's rights. Fellows are also expected to have knowledge about juvenile courts, the structure of the legal system, and child custody issues. In addition, fellows are required to analyze complex cases and write forensic reports which are well reasoned. Teaching methods include lectures, storytelling, use of video vignettes, and mock trials. Additional teaching methodologies include group supervision of fellows in their report writing and direct observation of giving testimony. During the year we see fellows evolve and shift their orientation from being an advocate for patients to perceiving their role as serving justice.

  13. FRIDA integral field unit manufacturing

    Science.gov (United States)

    Cuevas, Salvador; Eikenberry, Stephen S.; Sánchez, Beatriz

    2014-07-01

    FRIDA (inFRared Imager and Dissector for the Adaptive optics system of the Gran Telescopio Canarias) has been designed as a cryogenic and diffraction limited instrument that will offer broad and narrow band imaging and integral field spectroscopy (IFS). Both, the imaging mode and IFS observing modes will use the same Teledyne 2Kx2K detector. This instrument will be installed at Nasmyth B station, behind the GTC Adaptive Optics system (GTCAO). FRIDA will provide the IFS mode using a 30 slices Integral Field Unit (IFU). This IFU design is based on the University of Florida FISICA where the mirror block arrays are diamond turned on monolithic metal blocks. The FRIDA IFU is of the slicer type; conformed mainly by 3 mirror blocks with 30 spherical mirrors each. It also has a Schwarzschild relay based on two off axis spherical mirrors and an afocal system of two parabolic off axis mirrors. Including two insertion mirrors the IFU holds 96 metal mirrors. All the mirrors have been manufactured by diamond turning techniques on monolithic blocks of aluminum 6061-T6 coated by a Nickel alloy. Except for the Schwarzschild relay and the insertion mirrors, 92 mirrors were manufactured by Corning in Keene NH, USA. The different blocks and mirrors are mounted on an opto-mechanical support that ensures the image quality and integrity of the complete IFU. In this work advances on the manufacturing of the FRIDA IFU components are described. Furthermore, the mirror blocks individual verification tests and are also described.

  14. United Kingdom electric system privatization

    Energy Technology Data Exchange (ETDEWEB)

    Lolli, A. (Bologna Univ. (Italy))

    1992-03-01

    This paper reviews the mechanics and first results of deregulation in the electric power industry of the United Kingdom. Several aspects are dealt with, namely: 1983 Energy Act impacts on ownership and subsequent changes brought about by the 1989 Energy Act; the Act's stipulations with regard to share acquisition and distribution; the division of the patrimony of the Area Boards; natural monopolistic characteristics of power distribution; vertical integration in Scotland, target investment limits in Government and public participation; the 'golden share' concept to guarantee public participation; current 40% share ownership by the Government; 15% private ownership limit for individual investors; external control by Government of licensing and rate structure setting; the impacts of organizational changes on the overall cost benefits of deregulation; modified Governmental regulatory powers; measures to ensure competition and consumer protection; provisions regarding misbehaviour; second tier suppliers and reserve fuel supply obligations; deregulation impacts on nuclear power marketing; power pooling regulations; installation of new transmission lines; provisions encouraging the use of diverse energy sources; franchising; interconnection with national grid; regulation of technical operations; standby as it affects rate structure; and spot market pricing.

  15. Sleep in acute care units.

    Science.gov (United States)

    BaHammam, Ahmed

    2006-03-01

    Patients in the acute care units (ACU) are usually critically ill, making them more susceptible to the unfavorable atmosphere in the hospital. One of these unfavorable factors is sleep disruption and deprivation. Many factors may affect sleep in the ACU, including therapeutic interventions, diagnostic procedures, medications, the underlying disease process, and noise generated in the ACU environment. Many detrimental physiological effects can occur secondary to noise and sleep deprivation, including cardiovascular stimulation, increased gastric secretion, pituitary and adrenal stimulation, suppression of the immune system and wound healing, and possible contribution to delirium. Over the past few years, many studies have endeavored to objectively assess sleep in the ACUs, as well as the effect of mechanical ventilation and circadian rhythm changes critically ill patients. At this time, therefore, it is important to review published data regarding sleep in ACUs, in order to improve the knowledge and recognition of this problem by health care professionals. We have therefore reviewed the methods used to assess sleep in ACUs, factors that may affect sleep in the ACU environment, and the clinical implications of sleep disruption in the ACU.

  16. Neurovascular Unit in Chronic Pain

    Science.gov (United States)

    Radu, Beatrice Mihaela; Bramanti, Placido; Osculati, Francesco; Flonta, Maria-Luisa; Radu, Mihai; Bertini, Giuseppe; Fabene, Paolo Francesco

    2013-01-01

    Chronic pain is a debilitating condition with major socioeconomic impact, whose neurobiological basis is still not clear. An involvement of the neurovascular unit (NVU) has been recently proposed. In particular, the blood-brain barrier (BBB) and blood-spinal cord barrier (BSCB), two NVU key players, may be affected during the development of chronic pain; in particular, transient permeabilization of the barrier is suggested by several inflammatory- and nerve-injury-based pain models, and we argue that the clarification of molecular BBB/BSCB permeabilization events will shed new light in understanding chronic pain mechanisms. Possible biases in experiments supporting this theory and its translational potentials are discussed. Moving beyond an exclusive focus on the role of the endothelium, we propose that our understanding of the mechanisms subserving chronic pain will benefit from the extension of research efforts to the NVU as a whole. In this view, the available evidence on the interaction between analgesic drugs and the NVU is here reviewed. Chronic pain comorbidities, such as neuroinflammatory and neurodegenerative diseases, are also discussed in view of NVU changes, together with innovative pharmacological solutions targeting NVU components in chronic pain treatment. PMID:23840097

  17. The United States in the 1980's

    Directory of Open Access Journals (Sweden)

    D. Conradie

    2012-02-01

    Full Text Available The era of optimism which prevailed in the United States since the Korean War, came to an abrupt end after the debacle in Vietnam. By the end of the Seventies the United States was no longer the dominant military power. American foreign policy lacked consistence, coherence and a strategic sense. The United States became indecisive. Under these circumstances the Soviet Union successfully enforced its imperialistic designs upon countries far from its shores.

  18. BOARD-LEVEL BUILT-IN SELF-REPAIR METHOD OF RAM

    Institute of Scientific and Technical Information of China (English)

    Dou Yanjie; Zhan Huiqin; Chen Yakun; Shang Hongliang

    2012-01-01

    This paper describes the method of built-in self-repairing of RAM on board,designs hardware circuit,and logic for the RAM's faults self-repairing system based on FPGA.The key technology is that it utilizes FPGA to test RAM according to some algorithm to find out failure memory units and replace the faulty units with FPGA.Then it can build a memory that has no fault concern to external controller,and realizes the logic binding between external controller and RAM.Micro Controller Unit (MCU) can operate external RAM correctly even if RAM has some fault address units.Conventional MCS-51 is used to simulate the operation of MCU operating external memory.Simulation shows FPGA can complete the faulty address units' mapping and MCU can normally read and write external RAM.This design realizes the RAM's built-in self-repairing on board.

  19. Portable Unit for Metabolic Analysis

    Science.gov (United States)

    Dietrich, Daniel L.; Pitch, Nancy D.; Lewis, Mark E.; Juergens, Jeffrey R.; Lichter, Michael J.; Stuk, Peter M.; Diedrick, Dale M.; Valentine, Russell W.; Pettegrew, Richard D.

    2007-01-01

    The Portable Unit for Metabolic Analysis (PUMA) is an instrument that measures several quantities indicative of human metabolic function. Specifically, this instrument makes time-resolved measurements of temperature, pressure, flow, and the partial pressures of oxygen and carbon dioxide in breath during both inhalation and exhalation. Portable instruments for measuring these quantities have been commercially available, but the response times of those instruments are too long to enable temporal resolution of phenomena on the time scales of human respiration cycles. In contrast, the response time of the PUMA is significantly shorter than characteristic times of human respiration phenomena, making it possible to analyze varying metabolic parameters, not only on sequential breath cycles but also at successive phases of inhalation and exhalation within the same breath cycle. In operation, the PUMA is positioned to sample breath near the subject s mouth. Commercial off-the-shelf sensors are used for three of the measurements: a miniature pressure transducer for pressure, a thermistor for temperature, and an ultrasonic sensor for flow. Sensors developed at Glenn Research Center are used for measuring the partial pressures of oxygen and carbon dioxide: The carbon dioxide sensor exploits the relatively strong absorption of infrared light by carbon dioxide. Light from an infrared source passes through the stream of inhaled or exhaled gas and is focused on an infrared- sensitive photodetector. The oxygen sensor exploits the effect of oxygen in quenching the fluorescence of ruthenium-doped organic molecules in a dye on the tip of an optical fiber. A blue laser diode is used to excite the fluorescence, and the optical fiber carries the fluorescent light to a photodiode, the temporal variation of the output of which bears a known relationship with the rate of quenching of fluorescence and, hence, with the partial pressure of oxygen. The outputs of the sensors are digitized

  20. ISOPAR L Release Rates from Saltstone Using Simulated Salt Solutions

    Energy Technology Data Exchange (ETDEWEB)

    Bronikowski, M

    2006-02-06

    The Modular Caustic-Side Solvent Extraction (CSSX) Unit (MCU) and the Salt Waste Processing Facility (SWPF) will produce a Deactivated Salt Solution (DSS) that will go to the Saltstone Production Facility (SPF). Recent information indicates that solvent entrainment in the DSS is larger than expected. The main concern is with Isopar{reg_sign} L, the diluent in the solvent mixture, and its flammability in the saltstone vault. If it is assumed that all the Isopar{reg_sign} L is released instantaneously into the vault from the curing grout before each subsequent pour; the Isopar{reg_sign} L in the vault headspace is well mixed; and each pour displaces an equivalent volume of headspace, the allowable concentration of Isopar{reg_sign} L in the DSS sent to SPF has been calculated at approximately 4 ppm. The amount allowed would be higher, if the release from grout were significantly less. The Savannah River National Laboratory was tasked with determining the release of Isopar{reg_sign} L from saltstone prepared with a simulated DSS with Isopar{reg_sign} L concentrations ranging from 50 mg/L to 200 mg/L in the salt fraction and with test temperatures ranging from ambient to 95 C. The results from the curing of the saltstone showed that the Isopar{reg_sign} L release data can be treated as a percentage of initial concentration in the concentration range studied. The majority of the Isopar{reg_sign} L that was released over the test duration was released in the first few days. The release of Isopar{reg_sign} L begins immediately and the rate of release decreases over time. At higher temperatures the immediate release is larger than at lower temperatures. In one test at 95 C essentially all of the Isopar{reg_sign} L was released in three months. Initial curing temperature was found to be very important as slight variations during the first few days affected the final Isopar{reg_sign} L amount released. Short scoping tests at 95 C with solvent containing all components (Isopar

  1. ISOPAR L RELEASE RATES FROM SALTSTONE USING SIMULATED SALT SOLUTIONS

    Energy Technology Data Exchange (ETDEWEB)

    Zamecnik, J; Michael Bronikowski, M; Alex Cozzi, A; Russell Eibling, R; Charles Nash, C

    2008-07-31

    The Modular Caustic-Side Solvent Extraction (CSSX) Unit (MCU) and the Salt Waste Processing Facility (SWPF) will produce a Decontaminated Salt Solution (DSS) that will go to the Saltstone Production Facility (SPF). Recent information indicates that solvent entrainment in the DSS is larger than expected. The main concern is with Isopar{reg_sign} L, the diluent in the solvent mixture, and its flammability in the saltstone vault. If it is assumed that all the Isopar{reg_sign} L is released instantaneously into the vault from the curing grout before each subsequent pour, the Isopar{reg_sign} L in the vault headspace is well mixed, and each pour displaces an equivalent volume of headspace, the maximum concentration of Isopar{reg_sign} L in the DSS to assure 25% of the lower flammable limit is not exceeded has been determined to be about 4 ppm. The amount allowed would be higher if the release from grout were significantly less. The Savannah River National Laboratory was tasked with determining the release of Isopar{reg_sign} L from saltstone prepared with a simulated DSS with Isopar{reg_sign} L concentrations ranging from 50 to 200 mg/L in the salt fraction and with test temperatures ranging from ambient to 95 C. The results from the curing of the saltstone showed that the amount of Isopar{reg_sign} L released versus time can be treated as a percentage of initial amount present; there was no statistically significant dependence of the release rate on the initial concentration. The majority of the Isopar{reg_sign} L that was released over the test duration was released in the first few days. The release of Isopar{reg_sign} L begins immediately and the rate of release decreases over time. At higher temperatures the immediate release rate is larger than at lower temperatures. Initial curing temperature was found to be very important as slight variations during the first few hours or days had a significant effect on the amount of Isopar{reg_sign} L released. Short scoping

  2. "Units of Comparison" across Languages, across Time

    Science.gov (United States)

    Thomas, Margaret

    2009-01-01

    Lardiere's keynote article adverts to a succession of "units of comparison" that have been employed in the study of cross-linguistic differences, including mid-twentieth-century structural patterns, generative grammar's parameters, and (within contemporary Minimalism) features. This commentary expands on the idea of units of cross-linguistic…

  3. Portable Power And Digital-Communication Units

    Science.gov (United States)

    Levin, Richard R.; Henry, Paul K.; Rosenberg, Leigh S.

    1992-01-01

    Conceptual network of electronic-equipment modules provides electrical power and digital radio communications at multiple sites not served by cables. System includes central communication unit and portable units powered by solar photovoltaic arrays. Useful to serve equipment that must be set up quickly at remote sites or buildings that cannot be modified to provide cable connections.

  4. Brexit and Devolution in the United Kingdom

    Directory of Open Access Journals (Sweden)

    Michael Keating

    2017-03-01

    Full Text Available Devolution in the United Kingdom is deeply connected to United Kingdom membership of the European Union, which provides an external support system for the internal settlement. Exit from the European Union destabilizes the internal settlement and raises a series of major constitutional issues.

  5. Unit: Plants, Inspection Pack, National Trial Print.

    Science.gov (United States)

    Australian Science Education Project, Toorak, Victoria.

    This is a National Trial Print of a unit on plants produced as a part of the Australian Science Education Project. The unit consists of an information booklet for students, a booklet for recording student data, and a teacher's guide. The material, designed for use with students in the upper elementary grades, takes from 15 to 20 forty-minute…

  6. 28 CFR 0.1 - Organizational units.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Organizational units. 0.1 Section 0.1 Judicial Administration DEPARTMENT OF JUSTICE ORGANIZATION OF THE DEPARTMENT OF JUSTICE Organizational Structure of the Department of Justice § 0.1 Organizational units. The Department of Justice shall consist...

  7. Performance and burnout in intensive care units

    NARCIS (Netherlands)

    Keijsers, GJ; Schaufeli, WB; LeBlanc, P; Zwerts, C; Miranda, DR

    1995-01-01

    The relationship between three different performance measures and burnout was explored in 20 Dutch Intensive Care Units (ICUs). Burnout (i.e. emotional exhaustion and depersonalization) proved to be significantly related to nurses' perceptions of performance as well as to objectively assessed unit p

  8. Topology optimization of inertia driven dosing units

    DEFF Research Database (Denmark)

    Andreasen, Casper Schousboe

    2016-01-01

    This paper presents a methodology for optimizing inertia driven dosing units, sometimes referred to as eductors, for use in small scale flow applications. The unit is assumed to operate at low to moderate Reynolds numbers and under steady state conditions. By applying topology optimization...

  9. REACH. Electricity Units, Post-Secondary.

    Science.gov (United States)

    Smith, Gene; And Others

    As a part of the REACH (Refrigeration, Electro-Mechanical, Air-Conditioning, Heating) electromechanical cluster, this postsecondary student manual contains individualized instructional units in the area of electricity. The instructional units focus on electricity fundamentals, electric motors, electrical components, and controls and installation.…

  10. 40 CFR 157.27 - Unit packaging.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Unit packaging. 157.27 Section 157.27 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS PACKAGING REQUIREMENTS FOR PESTICIDES AND DEVICES Child-Resistant Packaging § 157.27 Unit packaging. Pesticide...

  11. Clique-width of unit interval graphs

    OpenAIRE

    Lozin, Vadim V.

    2007-01-01

    The clique-width is known to be unbounded in the class of unit interval graphs. In this paper, we show that this is a minimal hereditary class of unbounded clique-width, i.e., in every hereditary subclass of unit interval graphs the clique-width is bounded by a constant.

  12. Introduction to Agribusiness. Unit A-6.

    Science.gov (United States)

    Luft, Vernon D.; Backlund, Paul

    This secondary curriculum guides is comprised of two jobs (units of instruction) designed to introduce students to Agribusiness. An introductory section lists the jobs included in the guide, intended use, unit objectives, and references. Jobs included are (1) Understanding the Importance of Agribusiness and (2) Defining Types of Business…

  13. Integrating Geospatial Technologies in an Energy Unit

    Science.gov (United States)

    Kulo, Violet A.; Bodzin, Alec M.

    2011-01-01

    This article presents a design-based research study of the implementation of an energy unit developed for middle school students. The unit utilized Google Earth and a geographic information system (GIS) to support student understanding of the world's energy resources and foster their spatial thinking skills. Findings from the prototype study…

  14. Linguistic Units and Speech Production Theory.

    Science.gov (United States)

    MacNeilage, Peter F.

    This paper examines the validity of the concept of linguistic units in a theory of speech production. Substantiating data are drawn from the study of the speech production process itself. Secondarily, an attempt is made to reconcile the postulation of linguistic units in speech production theory with their apparent absence in the speech signal.…

  15. Understanding "Romeo and Juliet": A Thematic Unit.

    Science.gov (United States)

    Koveleski, Erin

    This curriculum unit for Grade 9 combines the classic Shakespeare play "Romeo and Juliet" with three young adult novels: "The Outsiders" (S.E. Hinton), "Summer of My German Soldier" (Bette Greene), and "The Witch of Blackbird Pond" (Elizabeth George Speare). To complete the unit, all students will be required to read the Shakespeare play; however,…

  16. SPOKEN COCHABAMBA QUECHUA, UNITS 13-24.

    Science.gov (United States)

    LASTRA, YOLANDA; SOLA, DONALD F.

    UNITS 13-24 OF THE SPOKEN COCHABAMBA QUECHUA COURSE FOLLOW THE GENERAL FORMAT OF THE FIRST VOLUME (UNITS 1-12). THIS SECOND VOLUME IS INTENDED FOR USE IN AN INTERMEDIATE OR ADVANCED COURSE AND INCLUDES MORE COMPLEX DIALOGS, CONVERSATIONS, "LISTENING-INS," AND DICTATIONS, AS WELL AS GRAMMAR AND EXERCISE SECTIONS COVERING ADDITIONAL…

  17. SPOKEN COCHABAMBA QUECHUA, UNITS 1-12.

    Science.gov (United States)

    LASTRA, YOLANDA; SOLA, DONALD F.

    THE FIRST OF TWO VOLUMES PREPARED FOR TEACHING THE COCHABAMBA DIALECT OF QUECHUA TO SPEAKERS OF ENGLISH, THIS DOCUMENT IS MADE UP OF 12 UNITS THAT COMPRISE A 6-WEEK INTENSIVE COURSE OF 20 CLASS HOURS A WEEK. EACH UNIT CONSISTS OF ONE OR MORE DIALOGS TO BE MEMORIZED, A DIALOG REVIEW, A SECTION ON GRAMMAR WITH ACCOMPANYING EXERCISES, CONVERSATION,…

  18. Block Gas Sol Unit in Haderslev

    DEFF Research Database (Denmark)

    Vejen, Niels Kristian

    2000-01-01

    Investigation of a SDHW system based on a Block Gas Sol Unit from Baxi A/S installed by a consumer i Haderslev, Denmark.......Investigation of a SDHW system based on a Block Gas Sol Unit from Baxi A/S installed by a consumer i Haderslev, Denmark....

  19. Unit 1003: The Language of Exposition.

    Science.gov (United States)

    Minnesota Univ., Minneapolis. Center for Curriculum Development in English.

    This language unit for grade 10 builds on a definition of the expository use of language developed in the two previous 10th-grade units. In a brief overview of report language, the referential language of Thomas Huxley is compared with the expressive language of Edgar Allan Poe. The writings of S. I. Hayakawa, Hans Guth, and others are examined…

  20. Nuclear Proliferation: A Unit for Study.

    Science.gov (United States)

    Fernekes, William R.

    1990-01-01

    Using Argentina as a sample case study, presents a classroom unit designed to explain the implications for world peace of nuclear weapons development. Employs a policy analysis model to make an indepth examination of the values underlying all government policy decisions. Includes unit topics and procedures for the exercise. (NL)

  1. Receipts. Agricultural Record Keeping. Supplementary Units.

    Science.gov (United States)

    Missouri Univ., Columbia. Instructional Materials Lab.

    Eight supplementary units are included in these instructional materials for agricultural recordkeeping: (1) receipts; (2) expenditures; (3) cash flow; (4) inventory; (5) financial statement; (6) business agreements; (7) ownership business agreements; and (8) placement training agreements. Each unit contains an introduction, lesson objectives, and…

  2. Unit 1003: The Language of Exposition.

    Science.gov (United States)

    Minnesota Univ., Minneapolis. Center for Curriculum Development in English.

    This language unit for grade 10 builds on a definition of the expository use of language developed in the two previous 10th-grade units. In a brief overview of report language, the referential language of Thomas Huxley is compared with the expressive language of Edgar Allan Poe. The writings of S. I. Hayakawa, Hans Guth, and others are examined…

  3. Unit: Cells, Inspection Set, National Trial Print.

    Science.gov (United States)

    Australian Science Education Project, Toorak, Victoria.

    This trial version of a unit is the series being produced by the Australian Science Education Project provides instructions for students to prepare a variety of cell types and examine them with microscopes. It also gives some information about the variety and function of cells. The core of the unit, which all students are expected to complete,…

  4. Addressing the United States Debt and Deficit

    Science.gov (United States)

    2010-03-01

    current government approach to the economy , then examining the current projections for United States’ spending from 2009 through 2019 and examining...manner and thereby strengthen the economy of the United States, this paper concludes with three examples that are predicated on the synergistic benefits associated with small reforms.

  5. SPOKEN COCHABAMBA QUECHUA, UNITS 1-12.

    Science.gov (United States)

    LASTRA, YOLANDA; SOLA, DONALD F.

    THE FIRST OF TWO VOLUMES PREPARED FOR TEACHING THE COCHABAMBA DIALECT OF QUECHUA TO SPEAKERS OF ENGLISH, THIS DOCUMENT IS MADE UP OF 12 UNITS THAT COMPRISE A 6-WEEK INTENSIVE COURSE OF 20 CLASS HOURS A WEEK. EACH UNIT CONSISTS OF ONE OR MORE DIALOGS TO BE MEMORIZED, A DIALOG REVIEW, A SECTION ON GRAMMAR WITH ACCOMPANYING EXERCISES, CONVERSATION,…

  6. SPOKEN COCHABAMBA QUECHUA, UNITS 13-24.

    Science.gov (United States)

    LASTRA, YOLANDA; SOLA, DONALD F.

    UNITS 13-24 OF THE SPOKEN COCHABAMBA QUECHUA COURSE FOLLOW THE GENERAL FORMAT OF THE FIRST VOLUME (UNITS 1-12). THIS SECOND VOLUME IS INTENDED FOR USE IN AN INTERMEDIATE OR ADVANCED COURSE AND INCLUDES MORE COMPLEX DIALOGS, CONVERSATIONS, "LISTENING-INS," AND DICTATIONS, AS WELL AS GRAMMAR AND EXERCISE SECTIONS COVERING ADDITIONAL…

  7. SPOKEN COCHABAMBA QUECHUA, UNITS 13-24.

    Science.gov (United States)

    LASTRA, YOLANDA; SOLA, DONALD F.

    UNITS 13-24 OF THE SPOKEN COCHABAMBA QUECHUA COURSE FOLLOW THE GENERAL FORMAT OF THE FIRST VOLUME (UNITS 1-12). THIS SECOND VOLUME IS INTENDED FOR USE IN AN INTERMEDIATE OR ADVANCED COURSE AND INCLUDES MORE COMPLEX DIALOGS, CONVERSATIONS, "LISTENING-INS," AND DICTATIONS, AS WELL AS GRAMMAR AND EXERCISE SECTIONS COVERING ADDITIONAL GRAMMATICAL…

  8. Tetrahedral Units: For Dodecahedral Super-Structures

    CERN Document Server

    Ortiz, Y; Liebman, J F

    2016-01-01

    Different novel organic-chemical possibilities for tetrahedral building units are considered, with attention to their utility in constructing different super-structures. As a representative construction we consider the use of sets of 20 such identical tetrahedral units to form a super-dodecahedron.

  9. Biogas for Javanese villages - a simple unit

    Energy Technology Data Exchange (ETDEWEB)

    Steward, J.; Richmond, B.

    1980-09-01

    Java is on the verge of suffering severe ecological damage due to deforestation as villagers attempt to meet a desperate need for food and firewood. In an attempt to alleviate this situation a biogas unit has been developed suited to local conditions with the potential for distribution to Javanese village farmers. The design, construction and operation of one such unit is described.

  10. Who's afraid of the Unit Quaternion ?

    CERN Document Server

    O'Sullivan, Brian

    2016-01-01

    Far from being just a 2-level Quantum system the Qubit is a Unit Quaternion, also known as a Spinor. Therefore it follows that the Qubit is a 4-dimensional vector which traces a path on the surface of the unit 3-sphere. This is the meaning of the global phase.

  11. Cornerstones: Literacy Units Ready for Teachers, Students

    Science.gov (United States)

    Blasko, Jennifer; Donahue, Sheila

    2008-01-01

    Every day, teachers face the time-consuming task of adapting materials from curricula that do not meet their students' needs or match their learning styles. This article discusses ready-made literacy units specifically designed for teachers of deaf and hard of hearing students. The units were part of the Cornerstones Project, an activity of the…

  12. Foods and Nutrition Resource Unit. Entertaining.

    Science.gov (United States)

    Gantt, Sara

    This resource unit, a supplement to the foods and nutrition curriculum guide (see related note), was designed to help secondary education home economics teachers provide students with additional food study and plan for learning experiences in the art of entertaining. The unit covers four principle topics regarding the art of entertaining in a…

  13. Units for the Laboratory of Industries.

    Science.gov (United States)

    Gorham State Coll., ME.

    This institute focused on manufacturing industries for junior high industrial arts. It was attended by 20 teachers from 14 states who worked in four groups to develop pairs of instructional units titled "Introduction to Technology and Industrial Arts." Each of these units covers personnel management, engineering, production, finance, and…

  14. Social Studies: United States. Grade 5.

    Science.gov (United States)

    Kellogg, E. G.

    This teachers guide attempts to facilitate the study of the United States through a conceptual approach and multimedia instruction in a spiral curriculum. There are five units: 1) Natural Setting --location, climate, terrain, water, soil, and economic and esthetic value, and conservation; 2) Historial Development --North American Indian cultures,…

  15. A Novel Classification of Concentration Units.

    Science.gov (United States)

    MacCarthy, Patrick

    1983-01-01

    Presents a classification scheme that organizes concentration units (such as molarity) into four logical classes. These classes clearly illustrate relationships and differences between the various units. The scheme is operationally simple to apply and removes the apparent arbitrariness of definitions as normally presented. (Author/JN)

  16. Unit 148 - World Wide Web Basics

    OpenAIRE

    133, CC in GIScience; Yeung, Albert K.

    2000-01-01

    This unit explains the characteristics and the working principles of the World Wide Web as the most important protocol of the Internet. Topics covered in this unit include characteristics of the World Wide Web; using the World Wide Web for the dissemination of information on the Internet; and using the World Wide Web for the retrieval of information from the Internet.

  17. Performance and burnout in intensive care units

    NARCIS (Netherlands)

    Keijsers, GJ; Schaufeli, WB; LeBlanc, P; Zwerts, C; Miranda, DR

    1995-01-01

    The relationship between three different performance measures and burnout was explored in 20 Dutch Intensive Care Units (ICUs). Burnout (i.e. emotional exhaustion and depersonalization) proved to be significantly related to nurses' perceptions of performance as well as to objectively assessed unit

  18. Charpak, Garwin, propose unit for radiation dose

    CERN Multimedia

    Feder, Toni

    2002-01-01

    Becquerels, curries, grays, rads, rems, roentgens, sieverts - even for specialists the units of radiation can get confusing. That's why two eminent physicists, Georges Charpak of France, and Richard Garwin, are proposing the DARI as a unit of radiation dose they hope will help the public evaluate the risks associated with low-level radiation exposure (1 page)

  19. Unit labour costs, productivity and international competitiveness

    NARCIS (Netherlands)

    Ark, Bart van; Stuivenwold, Edwin; Ypma, Gerard

    2005-01-01

    This paper provides international comparisons of relative levels of unit labour costs (ULC) for several OECD countries relative to the United States. The estimates are based on the Total Economy Database and the 60-Industry Database of the Groningen Growth and Development Centre (GGDC), and are also

  20. 1:2,000,000-scale Hydrologic Units of the United States

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This data set has been superseded by huc2m. This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii,...