WorldWideScience

Sample records for units 1-2 construction

  1. 120万t/a催化裂化装置沉降器改造施工技术%The Construction Technology of Settler Reforming on a 1.2 mill t/a Catalytic Cracking Unit

    Institute of Scientific and Technical Information of China (English)

    高建国; 曾强; 徐占定; 于承惠

    2001-01-01

    In connection with the riser & settler coking on a catalytic cracking reaction system,the patented VSS cyclone separators, efficient strippers, crude oil nozzles etc from Brit. UOP Co. were used to reform settler. The accumulative errors were reduced during assembling with whole body lifting by using a heavy-duty hoist which shortened the working hours and guaranteed construction quality. The unit operation is smooth after reforming and there is a 2% increase of light hydrocarbons recovering rate.%针对催化裂化装置反应系统内提升管和沉降器的结焦问题,采 用美国UOP公司的VSS旋风分离器、高效汽提、原料油喷嘴专利技术对沉降器的内系统进行技 术改造。选用大型吊车进行整体吊装、安装,减小了安装组对的累计误差,缩短了施工周期 ,保证了施工质量。改造后的设备运行平稳,轻质油回收率提高了两个百分点。

  2. 75 FR 13327 - Tennessee Valley Authority; Browns Ferry Nuclear Plant, Units 1, 2, and 3; Exemption

    Science.gov (United States)

    2010-03-19

    ... COMMISSION Tennessee Valley Authority; Browns Ferry Nuclear Plant, Units 1, 2, and 3; Exemption 1.0... DPR-33, DPR-52 and DPR-68, which authorize operation of the Browns Ferry Nuclear Plant, Units 1, 2... Ferry Schedule Exemption Request The licensee provided detailed information in its November 6, 2009...

  3. Specifications for Supplementary Classroom Units "Standard Construction" and "Preframed Construction".

    Science.gov (United States)

    Waring, Robert B.; And Others

    The standards that should be applied to the construction of supplementary classroom units are discussed in this report. Areas dealt with are--(1) general mechanical and electrical work, (2) concrete, (3) masonry, (4) miscellaneous steel and iron, (5) metal windows, (6) carpentry at site, (7) millwork, (8) acoustic treatment, (9) thermal…

  4. 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    U.S. Geological Survey, Department of the Interior — This data set has been superseded by huc2m.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,...

  5. (SUPERSEDED) 1:2,000,000-scale Hydrologic Units of the United States (SUPERSEDED)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. It was...

  6. 77 FR 31649 - Tennessee Valley Authority (Browns Ferry Units 1, 2, and 3); Confirmatory Order Modifying License...

    Science.gov (United States)

    2012-05-29

    ...; EA-12-071] Tennessee Valley Authority (Browns Ferry Units 1, 2, and 3); Confirmatory Order Modifying... the Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3 (facility), in accordance with conditions... acceptable license amendment request for Browns Ferry Nuclear Plant, Units 1, 2, and 3, to adopt NFPA...

  7. 75 FR 5354 - Tennessee Valley Authority; Browns Ferry Nuclear Plant, Units 1, 2, and 3 Environmental...

    Science.gov (United States)

    2010-02-02

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION Tennessee Valley Authority; Browns Ferry Nuclear Plant, Units 1, 2, and 3 Environmental Assessment...-68, issued to Tennessee Valley Authority (TVA, the licensee), for operation of the Browns Ferry...

  8. 77 FR 26318 - Duke Energy Carolinas, LLC., Oconee Nuclear Station, Units 1, 2, and 3 Exemption

    Science.gov (United States)

    2012-05-03

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION Duke Energy Carolinas, LLC., Oconee Nuclear Station, Units 1, 2, and 3 Exemption 1.0 Background Duke Energy Carolinas, LLC (the licensee) is the holder of Renewed Facility Operating Licenses DPR-38...

  9. 75 FR 14634 - Dominion Nuclear Connecticut, Inc.; Millstone Power Station, Unit Nos. 1, 2, and 3; Environmental...

    Science.gov (United States)

    2010-03-26

    ... part 73, for certain uninterruptible power supply requirements. The proposed action, an extension of... COMMISSION Dominion Nuclear Connecticut, Inc.; Millstone Power Station, Unit Nos. 1, 2, and 3; Environmental... Power Station, Unit Nos. 1, 2, and 3 (MPS1, MPS2, and MPS3, respectively), located in New London...

  10. Construction and characterization of a glycoprotein E deletion mutant of bovine herpesvirus type 1.2 strain isolated in Brazil

    NARCIS (Netherlands)

    Franco, A.C.; Rijsewijk, F.A.M.; Flores, E.F.; Weiblen, R.; Roehe, P.M.

    2002-01-01

    This paper describes the construction and characterization of a Brazilian strain of bovine herpesvirus type 1.2a (BoHV-1.2a) with a deletion of the glycoprotein E (gE) gene. The deletion was introduced by co-transfection of a deletion fragment containing the 5´and 3´gE flanking regions and genomic D

  11. Formalizing the Process of Constructing Chains of Lexical Units

    Directory of Open Access Journals (Sweden)

    Grigorij Chetverikov

    2015-06-01

    Full Text Available Formalizing the Process of Constructing Chains of Lexical Units The paper investigates mathematical aspects of describing the construction of chains of lexical units on the basis of finite-predicate algebra. Analyzing the construction peculiarities is carried out and application of the method of finding the power of linear logical transformation for removing characteristic words of a dictionary entry is given. Analysis and perspectives of the results of the study are provided.

  12. Construction prospects of new power units at Khmelnitskij NPP site

    Energy Technology Data Exchange (ETDEWEB)

    Zenyuk, Denys [NNEGC ' Energoatom' , 01032 Vetrova, 3, Kiev (Ukraine)

    2008-07-01

    According to the Energy Strategy of Ukraine for a period up to 2030 it is planned to put into operation power units 3 and 4 of Khmelnitskij NPP by year 2016. In this work considerations are presented on the possible options while selecting reactor unit type for Khmelnitskij NPP power units 3 and 4, which is the main determinant of the cost, construction and commissioning time, and utilization of the existent civil structures. To optimize Khmelnitskij-3 and 4 construction, a survey of the data has been conducted with regard to the possibility of construction of new power units of PWR/VVER type at Khmelnitskij NPP site. The multivariable analysis has been performed based on the projects technical and cost data, construction time and conditions, as well as their compliance with the IAEA and EUR safety requirements for new power units. (author)

  13. Modular construction of 2-substituted benzo[b]furans from 1,2-dichlorovinyl ethers.

    Science.gov (United States)

    Geary, Laina M; Hultin, Philip G

    2009-12-01

    (E)-1,2-Dichlorovinyl ethers and amides are easily accessible from trichloroethylene via nucleophilic addition across in situ synthesized dichloroacetylene. A one-pot, sequential Suzuki-Miyaura coupling/intramolecular direct arylation between dichlorovinyl ethers and organoboronic acids provides easy access to a variety of benzofurans in only two steps from inexpensive commercially available compounds. The method is extendable to the preparation of indoles from the analogous dichlorovinyl amides.

  14. 1:2,000,000-Scale Hydrologic Unit Boundaries - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer contains hydrologic unit boundaries and codes for the United States, Puerto Rico, and the U.S. Virgin Islands. It was revised for inclusion in the...

  15. 1:2,000,000-scale Counties of the United States

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This coverage is of the county boundaries of the conterminous United States. It was derived from the Digital Line Graph (DLG) files representing the...

  16. 1:2,000,000-scale state boundaries of the conterminous United States

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This coverage is of the state boundaries of the conterminous United States. It was derived from the Digital Line Graph (DLG) files representing the...

  17. 78 FR 40200 - Duke Energy Carolinas, LLC, Oconee Nuclear Station Units 1, 2, and 3; Independent Spent Fuel...

    Science.gov (United States)

    2013-07-03

    ... COMMISSION Duke Energy Carolinas, LLC, Oconee Nuclear Station Units 1, 2, and 3; Independent Spent Fuel...) for an exemption request submitted by Duke Energy Carolinas, LLC, on August 13, 2012 for the Oconee Nuclear Station Independent Spent Fuel Storage Facility (ISFSI). ] ADDRESSES: Please refer to Docket...

  18. 75 FR 16517 - Dominion Nuclear Connecticut, Inc.; Millstone Power Station, Unit Nos 1, 2, and 3; Exemption

    Science.gov (United States)

    2010-04-01

    ... alarm station requirements by September 30, 2010, and certain uninterruptible power supply requirements... certain uninterruptible power requirements and September 30, 2010, for certain alarm station requirements... COMMISSION Dominion Nuclear Connecticut, Inc.; Millstone Power Station, Unit Nos 1, 2, and 3; Exemption...

  19. 78 FR 6839 - Duke Energy Carolinas, LLC, Oconee Nuclear Station, Units 1, 2, and 3 Denial of Amendment to...

    Science.gov (United States)

    2013-01-31

    ... From the Federal Register Online via the Government Publishing Office ] NUCLEAR REGULATORY COMMISSION Duke Energy Carolinas, LLC, Oconee Nuclear Station, Units 1, 2, and 3 Denial of Amendment to Facility Operating License AGENCY: Nuclear Regulatory Commission. ACTION: Denial; opportunity to request a...

  20. 78 FR 41425 - In the Matter of Duke Energy Carolinas, LLC; (Oconee Nuclear Station, Units 1, 2, and 3...

    Science.gov (United States)

    2013-07-10

    ...; EA-13-010] In the Matter of Duke Energy Carolinas, LLC; (Oconee Nuclear Station, Units 1, 2, and 3... Energy Carolinas, LLC, Oconee Nuclear Station, 7800 Rochester Highway, Seneca, SC 29672. Filing is... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY...

  1. Cultural differences between construction professionals in Denmark and United Kingdom

    DEFF Research Database (Denmark)

    Hancock, M.R.

    This report presents the results of an investigation into cultural differences between professional members of the construction sector of Denmark and the United Kingdom. In particular it refers to differences between Arkitekter/Architects, Civilingeniører/Civil Engineers and Bygningskonstruktører...

  2. Protein-protein interaction network construction for cancer using a new L1/2-penalized Net-SVM model.

    Science.gov (United States)

    Chai, H; Huang, H H; Jiang, H K; Liang, Y; Xia, L Y

    2016-07-25

    Identifying biomarker genes and characterizing interaction pathways with high-dimensional and low-sample size microarray data is a major challenge in computational biology. In this field, the construction of protein-protein interaction (PPI) networks using disease-related selected genes has garnered much attention. Support vector machines (SVMs) are commonly used to classify patients, and a number of useful tools such as lasso, elastic net, SCAD, or other regularization methods can be combined with SVM models to select genes that are related to a disease. In the current study, we propose a new Net-SVM model that is different from other SVM models as it is combined with L1/2-norm regularization, which has good performance with high-dimensional and low-sample size microarray data for cancer classification, gene selection, and PPI network construction. Both simulation studies and real data experiments demonstrated that our proposed method outperformed other regularization methods such as lasso, SCAD, and elastic net. In conclusion, our model may help to select fewer but more relevant genes, and can be used to construct simple and informative PPI networks that are highly relevant to cancer.

  3. Development of Advanced In core Management Codes for Ulchin Unit 1, 2

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sang Hee; Park, Moon Gyu [Korea Electric Power Research Institute, Taejon (Korea, Republic of)

    1996-12-31

    As the first case of FRAMATOME`s plants, Ulchin Unit 1 Cycle 8 core was loaded with V5H fuel. Because of the heterogeneity in the axial enrichment of the V5H fuel, FRAMATOME`s 2-D in core management codes, CEDRIC-CARIN-ESTHER, are no longer valid to be used for in core management. In order to analyze Ulchin Unit 1 an 2 cores loaded with V5H fuel exactly, this study substituted them with WH`s In core-3D and Tote code. The previous IN CORE-Tote codes have been utilized on the HP workstation or the IBM mainframe which are not easily accessible by the site engineers and require the complicated manipulation in the computer network system. This study developed the PC-version of IN CORE-3D and Tote codes available in plants, including an interface code linking the data measured by the in core instrument system (RIC-KIT system) to IN CORE code. These codes reduce the time to manage in core and increase the economic benefits. We installed the developed codes in Ulchin Unit 1 and 2 and actually applied them to the core power distribution measurement performed during Cycle 8 power escalation tests. The results satisfied all limits of Technical Specification very well. The major contents of this study can be categorized as follows. 1. Analysis of the in core management codes. (a) Analysis of flux mapping system and measurement reduction algorithm. (b) Analysis of the methodology of in core management codes. 2. Development and verification of PC-version in core management codes. (a) Development of the measured-data processing code (C2I). (b) Development of PC-version IN CORE code. (c) Development of PC-version Tote code (d) Verification of the developed codes. 3. Application to core physics test of Ulchin until cycle 8. (a) Power distribution measurement at 75% and 100%. (author). 14 refs., figs., tabs.

  4. Module 11 Units 1-2单元点拨

    Institute of Scientific and Technical Information of China (English)

    吴涛

    2016-01-01

    Unit 1一、重点词汇1.toughadj.[课文原句再现]Also, sometimes as a boss inthe business world, you have to make difficult decisions that hurt people.此外,有时作为商界管理者,你得做出一些会伤害到别人的艰难决定。[拓展]1)“坚韧的;有韧性的”如:as tough as leather坚韧如皮革2)“严酷的;苛刻的”如:a tough winicer一个严寒的冬天。

  5. Construction Unit Training Challenges: A Proposal for Construction Engineer Qualification Tables

    Science.gov (United States)

    2010-12-01

    field manuals (FMs) and STPs in a classroom-type en- vironment, where most of the learning is done by reading the FMs and applying the lessons in a...organizations to Fort Stewart, Georgia, to teach its Soldiers. These organizations included AutoCAD ®, EMC Engineering Services Incorporated, the United...diers need to be assigned to the class. For example, the 92d sent its company executive officers and drafters to the AutoCAD class, construction

  6. Final Report: Self Consolidating Concrete Construction for Modular Units

    Energy Technology Data Exchange (ETDEWEB)

    Gentry, Russell [Georgia Inst. of Technology, Atlanta, GA (United States); Kahn, Lawrence [Georgia Inst. of Technology, Atlanta, GA (United States); Kurtis, Kimberly [Georgia Inst. of Technology, Atlanta, GA (United States); Petrovic, Bojan [Georgia Inst. of Technology, Atlanta, GA (United States); Loreto, Giovanni [Georgia Inst. of Technology, Atlanta, GA (United States); Van Wyk, Jurie [Westinghouse Electric Company, Cranberry Township, PA (United States); Canterero-Leal, Carlos [Westinghouse Electric Company, Cranberry Township, PA (United States)

    2016-07-29

    This report outlines the development of a self-consolidating concrete (also termed “self-compacting concrete” or SCC) so that concrete placement can be made into steel plate composite (SC) modular structures without the need for continuous concrete placement. As part of the research, SCC mixtures were developed and validated to ensure sufficient shear capacity across cold-joints, while minimizing shrinkage and temperature increase during curing to enhance concrete bonding with the steel plate construction found in modular units. The self-roughening concrete produced as part of this research was assessed in SC structures at three scales: small-scale shear-friction specimens, mid-scale beams tested in in-plane and out-of-plane bending, and a full-scale validation test using an SC module produced by Westinghouse as part of the Plant Vogtle expansion. The experiments show that the self-roughening concrete can produce a cold-joint surface of 0.25 inches (6 mm) without external vibration during concrete placement. The experiments and subsequent analysis show that the shear friction provisions of ACI 318-14, Section 22.9 can be used to assess the shear capacity of the cold-joints in SC modular construction, and that friction coefficient of 1.35 is appropriate for use with these provisions.

  7. Two supramolecular architectures constructed from dinuclear zinc(II) unit

    Science.gov (United States)

    Lou, Ben-Yong; Yuan, Da-Qiang; Wang, Rui-Hu; Xu, Ying; Wu, Ben-Lai; Han, Lei; Hong, Mao-Chun

    2004-07-01

    Two supramolecular architectures, [Zn 2( D, L-sala) 2(4-H 2Npy) 2·2H 2O] n ( 1) (4-H 2Npy=4-aminopyridine) and [Zn 2( D, L-sala) 2(4,4'-bpy)·0.5H 2O] n ( 2) (4,4'-bpy=4,4'-bipyridine), have been constructed from dinuclear zinc(II) unit [Zn 2( D, L-sala) 2] (sala= N-(2-hydroxybenzyl)-alanine anion). For 1, four dimmers link together through N-H⋯O hydrogen bonds to give rise to a square ring that is extended into two-dimensional supramolecular network. For 2, dinuclear units are connected by 4,4'-bipyridine to generate a one-dimensional chain with ladder structure, which is connected through hydrogen bonds into three-dimensional supramolecular framework. Complex 1 exhibits intense photoluminescence at 402 nm upon photo-excitation at 348 nm, while complex 2 gives two intense photoluminescent peaks at 464 and 613 nm upon photo-excitation at 350 nm.

  8. Final Report: Self-Consolidating Concrete Construction for Modular Units

    Energy Technology Data Exchange (ETDEWEB)

    Gentry, Russell [Georgia Inst. of Technology, Atlanta, GA (United States); Kahn, Lawrence [Georgia Inst. of Technology, Atlanta, GA (United States); Kurtis, Kimberly [Georgia Inst. of Technology, Atlanta, GA (United States); Petrovic, Bojan [Georgia Inst. of Technology, Atlanta, GA (United States); Loreto, Giovanni [Georgia Inst. of Technology, Atlanta, GA (United States); Van Wyk, Jurie [Westinghouse Inc., Cranberry Township, PA (United States); Canterero-Leal, Carlos [Westinghouse Inc., Cranberry Township, PA (United States)

    2016-07-29

    This report focuses on work completed on DE-NE0000667, Self-Consolidating Concrete for Modular Units, in connection with the Department of Energy Nuclear Energy Enabling Technologies (DOE-NEET) program. This project was completed in the School of Civil and Environmental Engineering at the Georgia Institute of Technology, with Westinghouse Corporation as the industrial partner. The primary objective of this project was to develop self-consolidating concrete (also termed “self-compacting concrete” or SCC) mixtures so that concrete placement can be made into steel plate composite (SC) modular structures without the need for continuous concrete placement. As part of the research, SCC mixtures were developed and validated to ensure sufficient shear capacity across cold-joints, while minimizing shrinkage and temperature increase during curing to enhance concrete bonding with the steel plate construction found in modular units. The SCC mixtures developed were able to carry shearing forces across the cold-joint boundaries. This “self-roughening” was achieved by adding a tailored fraction of lightweight aggregate (LWA) to the concrete mix, some of which raised to the surface during curing, forming a rough surface on which subsequent concrete placements were made. The self-roughening behavior was validated through three sets of structural tests. Shear friction on small-scale specimens with cold joints was assessed using varying fractions of LWA and with varying amounts of external steel plate reinforcement. The results show that the shear friction coefficient, to be used with the provisions of ACI 318-14, Section 22.9, can be taken as 1.35. Mid-scale beam tests were completed to assess the cold-joint capacity in both in-plane and out-of-plane bending. The results showed that the self-roughened joints performed as well as monolithic joints. The final assessment was a full-scale test using a steel composite module supplied by Westinghouse and similar in construction to

  9. Human Factors Evaluation of Man-Machine Interface for Periodic Safety Review of Yonggwang Unit no. 1, 2

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Yong Hee; Lee, Jung Woon; Park, Jae Chang (and others)

    2006-01-15

    This report describes the research results of human factors assessment on the MMI(Man Machine Interface) equipment as part of Periodic Safety Review(PSR) of Yonggwang Unit no. 1, 2. As MMI is a key factor among human factors to be reviewed in PSR, we reviewed the MMI components of nuclear power plants in aspect of human factors engineering. The availability, suitability, and effectiveness of the MMI devices were chosen to be reviewed. The MMI devices were investigated through the review of design documents related to the MMI, survey of control panels, evaluation of experts, and experimental assessment. Checklists were used to perform this assessment and record the review results. The items mentioned by the expert comments to review in detail in relation with task procedures were tested by experiments with operators' participation. For some questionable issues arisen during this MMI review, operator workload and possibility of errors in operator actions were analysed. The reviewed MMI devices contain MCR(Main Control Room), SPDS(Safety Parameter Display System), RSP(Remote Shutdown Panel), and the selected LCBs(Local Control Boards) importantly related to safety. As results of the assessments, any significant problem challenging the safety was not found on human factors in the MMI devices. However, several small items to be changed and improved in suitability of MMI devices were discovered. An action plan is recommended to accommodate the suggestions and review comments. It will enhance the plant safety on MMI area.

  10. 2.1.2. A Novel Lead(II MOF Constructed Through 2-Fold Non-linear FDA as Linker

    Directory of Open Access Journals (Sweden)

    Ya-feng Li*, Yan Liu, Wen-yuan Gao, Jing-jing Lu

    2014-04-01

    Full Text Available A unique three-dimensional metal-organic framework —— Pb(FDA (FDA = furan-2,5-dicarboxylic acid has been hydrothermally synthesized and structurally determined by single-crystal X-ray analysis. The crystal is of tetragonal system, space group I41/a, C6H2O5Pb, Mr = 361.27, a = 13.863(2 Å, b = 13.863(2 Å, c = 13.998(3 Å, V = 2690.0(8 Å3, Z = 16, Dc = 3.568 g/cm3, F(000 = 2560, ?(MuK? = 25.060 mm-1, Rint = 7.32%, R1 = 2.59% and wR1 = 5.88% for 1543 observed reflections with I > 2?(I. Pb cation is six-coordinated by oxygens of FDA, showing the hemi directed geometry. Pb cations are connected into zigzag chain along b direction in bc planar by FDA, which is furthermore linked to three-dimensional framework with very tiny aperture by bridged carboxyl oxygens of FDA. The elemental analyses, PXRD, FTIR spectra and the thermal stability have been structurally characterized.

  11. Costs of occupational injuries in construction in the United States.

    Science.gov (United States)

    Waehrer, Geetha M; Dong, Xiuwen S; Miller, Ted; Haile, Elizabeth; Men, Yurong

    2007-11-01

    This paper presents costs of fatal and nonfatal injuries for the construction industry using 2002 national incidence data from the Bureau of Labor Statistics and a comprehensive cost model that includes direct medical costs, indirect losses in wage and household productivity, as well as an estimate of the quality of life costs due to injury. Costs are presented at the three-digit industry level, by worker characteristics, and by detailed source and event of injury. The total costs of fatal and nonfatal injuries in the construction industry were estimated at $11.5 billion in 2002, 15% of the costs for all private industry. The average cost per case of fatal or nonfatal injury is $27,000 in construction, almost double the per-case cost of $15,000 for all industry in 2002. Five industries accounted for over half the industry's total fatal and nonfatal injury costs. They were miscellaneous special trade contractors (SIC 179), followed by plumbing, heating and air-conditioning (SIC 171), electrical work (SIC 173), heavy construction except highway (SIC 162), and residential building construction (SIC 152), each with over $1 billion in costs.

  12. Constructing a gapless spin-liquid state for the spin-1/2 J(1)-J(2) Heisenberg model on a square lattice.

    Science.gov (United States)

    Wang, Ling; Poilblanc, Didier; Gu, Zheng-Cheng; Wen, Xiao-Gang; Verstraete, Frank

    2013-07-19

    We construct a class of projected entangled pair states which is exactly the resonating valence bond wave functions endowed with both short range and long range valence bonds. With an energetically preferred resonating valence bond pattern, the wave function is simplified to live in a one-parameter variational space. We tune this variational parameter to minimize the energy for the frustrated spin-1/2 J(1)-J(2) antiferromagnetic Heisenberg model on the square lattice. Taking a cylindrical geometry, we are able to construct four topological sectors with an even or odd number of fluxes penetrating the cylinder and an even or odd number of spinons on the boundary. The energy splitting in different topological sectors is exponentially small with the cylinder perimeter. We find a power law decay of the dimer correlation function on a torus, and a lnL correction to the entanglement entropy, indicating a gapless spin-liquid phase at the optimum parameter.

  13. Construction of the steady state density matrix and quasilocal charges for the spin-1/2 XXZ chain with boundary magnetic fields

    Science.gov (United States)

    Matsui, Chihiro; Prosen, Tomaž

    2017-09-01

    We construct the nonequilibrium steady state (NESS) density operator of the spin-1/2 XXZ chain with non-diagonal boundary magnetic fields coupled to boundary dissipators. The Markovian boundary dissipation is found with which the NESS density operator is expressed in terms of the product of the Lax operators by relating the dissipation parameters to the boundary parameters of the spin chain. The NESS density operator can be expressed in terms of a non-Hermitian transfer operator (NHTO) which forms a commuting family of quasilocal charges. The optimization of the Mazur bound for the high temperature Drude weight is discussed by using the quasilocal charges and the conventional local charges constructed through the Bethe ansatz.

  14. INVENTORY OF CONSTRUCTED WETLANDS IN THE UNITED STATES

    Science.gov (United States)

    During 1990 and 1991 the U.S. Environmental Production Agency (EPA) sponsored an effort to identify existing and planned constructed wetlands in the U.S. and to collect readily available information from operating systems. In addition to inquiries by telephone and mail, the effor...

  15. The use of interorganisational ICT in United States construction projects

    NARCIS (Netherlands)

    Adriaanse, Arjen; Voordijk, Hans; Dewulf, Geert

    2010-01-01

    In recent research, the use of ICT applications in real time construction projects have been documented and analysed extensively. However, there is a need for identifying and analysing in-depth the mechanisms influencing the use of interorganisational ICT applications and for solutions to eliminate

  16. Indolizines and pyrrolo[1,2-c]pyrimidines decorated with a pyrimidine and a pyridine unit respectively

    Directory of Open Access Journals (Sweden)

    Marcel Mirel Popa

    2015-06-01

    Full Text Available The three possible structural isomers of 4-(pyridylpyrimidine were employed for the synthesis of new pyrrolo[1,2-c]pyrimidines and new indolizines, by 1,3-dipolar cycloaddition reaction of their corresponding N-ylides generated in situ from their corresponding cycloimmonium bromides. In the case of 4-(3-pyridylpyrimidine and 4-(4-pyridylpyrimidine the quaternization reactions occur as expected at the pyridine nitrogen atom leading to pyridinium bromides and consequently to new indolizines via the corresponding pyridinium N-ylides. However, in the case of 4-(2-pyridylpyrimidine the steric hindrance directs the reaction to the pyrimidinium N-ylides and, subsequently, to the formation of the pyrrolo[1,2-c]pyrimidines. The new pyrrolo[1,2-c]pyrimidines and the new indolizines were structurally characterized through NMR spectroscopy. The X-ray structures of two of the starting materials, 4-(2-pyridylpyrimidine and 4-(4-pyridylpyrimidine, are also reported.

  17. 77 FR 29701 - Impact of Construction (Under a Combined License) of New Nuclear Power Plant Units on Operating...

    Science.gov (United States)

    2012-05-18

    ... a Combined License) of New Nuclear Power Plant Units on Operating Units at Multi-Unit Sites AGENCY... a COL intending to construct and operate new nuclear power plants (NPPs) on multi-unit sites to... Impacts of Construction (under a Combined License) of New Nuclear Power Plants on Operating Units at...

  18. Construction of two 1000-MW units launched in Laizhou Power Plant

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    On March 10, the f irst construction phase of Huadian International Laizhou Power Plant with two 1 000-MW class generating units was formally started. This power plant is a key power source project of Shandong Province

  19. Constructing Knowledge about the Trigonometric Functions and Their Geometric Meaning on the Unit Circle

    Science.gov (United States)

    Altman, Renana; Kidron, Ivy

    2016-01-01

    Processes of knowledge construction are investigated. A learner is constructing knowledge about the trigonometric functions and their geometric meaning on the unit circle. The analysis is based on the dynamically nested epistemic action model for abstraction in context. Different tasks are offered to the learner. In his effort to perform the…

  20. Experimental and Analytical Investigation Based on 1/2 Scale Model for a Cleanroom Unit Module Consisting of Steel Section and Reinforced Concrete

    Directory of Open Access Journals (Sweden)

    Sijun Kim

    2016-01-01

    Full Text Available The rapid advances in high tech industries and the increased demand for high precision and reliability of their production environments call for larger structures and higher vertical vibration performance for high technology facilities. Therefore, there is an urgent demand for structural design and vertical vibration evaluation technologies for high tech facility structures. For estimating the microvibration performance for a cleanroom unit module in high technology facilities, this study performs the scale modeling experiment and analytical validation. First, the 1/2 scale model (width 7500 mm, depth 7500 mm, and height 7250 mm for a cleanroom unit module is manufactured based on a mass-based similitude law which does not require additional mass. The dynamic test using an impact hammer is conducted to obtain the transfer function of 1/2 scale model. The transfer function derived from the test is compared with the analytical results to calibrate the analytical model. It is found that, unlike for static analyses, the stiffness of embedded reinforcement must be considered for estimating microvibration responses. Finally, the similitude law used in this study is validated by comparing the full-scale analytical model and 1/2 scale analytical model for a cleanroom unit module.

  1. Constructing knowledge about the trigonometric functions and their geometric meaning on the unit circle

    Science.gov (United States)

    Altman, Renana; Kidron, Ivy

    2016-10-01

    Processes of knowledge construction are investigated. A learner is constructing knowledge about the trigonometric functions and their geometric meaning on the unit circle. The analysis is based on the dynamically nested epistemic action model for abstraction in context. Different tasks are offered to the learner. In his effort to perform the different tasks, he has the opportunity to understand the process used to create unit circle representations of trigonometric expressions. The theoretical framework of abstraction in context is used to analyse the evolution of the learner's construction of knowledge in the transition from 'triangle' trigonometry to 'circle' trigonometry.

  2. Heterospin systems constructed from [Cu2Ln]3+ and [Ni(mnt)2]1-,2- Tectons: First 3p-3d-4f complexes (mnt = maleonitriledithiolato).

    Science.gov (United States)

    Madalan, Augustin M; Avarvari, Narcis; Fourmigué, Marc; Clérac, Rodolphe; Chibotaru, Liviu F; Clima, Sergiu; Andruh, Marius

    2008-02-04

    New heterospin complexes have been obtained by combining the binuclear complexes [{Cu(H(2)O)L(1)}Ln(O(2)NO)(3)] or [{CuL(2)}Ln(O(2)NO)(3)] (L(1) = N,N'-propylene-di(3-methoxysalicylideneiminato); L(2) = N,N'-ethylene-di(3-methoxysalicylideneiminato); Ln = Gd(3+), Sm(3+), Tb(3+)), with the mononuclear [CuL(1)(2)] and the nickel dithiolene complexes [Ni(mnt)(2)](q)- (q = 1, 2; mnt = maleonitriledithiolate), as follows: (1)infinity[{CuL(1)}(2)Ln(O(2)NO){Ni(mnt)(2)}].Solv.CH(3)CN (Ln = Gd(3+), Solv = CH(3)OH (1), Ln = Sm(3+), Solv = CH(3)CN (2)) and [{(CH(3)OH)CuL(2)}(2)Sm(O(2)NO)][Ni(mnt)(2)] (3) with [Ni(mnt)2]2-, [{(CH(3)CN)CuL(1)}(2)Ln(H(2)O)][Ni(mnt)(2)]3.2CH(3)CN (Ln = Gd(3+) (4), Sm(3+) (5), Tb(3+) (6)), and [{(CH(3)OH)CuL(2)}{CuL(2)}Gd(O(2)NO){Ni(mnt)(2)}][Ni(mnt)(2)].CH(2)Cl(2) (7) with [Ni(mnt))(2]*-. Trinuclear, almost linear, [CuLnCu] motifs are found in all the compounds. In the isostructural 1 and 2, two trans cyano groups from a [Ni(mnt)2]2- unit bridge two trimetallic nodes through axial coordination to the Cu centers, thus leading to the establishment of infinite chains. 3 is an ionic compound, containing discrete [{(CH(3)OH)CuL(2)}(2)Sm(O(2)NO)](2+) cations and [Ni(mnt)(2)](2-) anions. Within the series 4-6, layers of discrete [CuLnCu](3+) motifs alternate with stacks of interacting [Ni(mnt)(2)](*-) radical anions, for which two overlap modes, providing two different types of stacks, can be disclosed. The strength of the intermolecular interactions between the open-shell species is estimated through extended Hückel calculations. In compound 7, [Ni(mnt)(2)](*-) radical anions coordinate group one of the Cu centers of a trinuclear [Cu(2)Gd] motif through a CN, while discrete [Ni(mnt)(2)](*-) units are also present, overlapping in between, but also with the coordinated ones. Furthermore, the [Cu(2)Gd] moieties dimerize each other upon linkage by two nitrato groups, both acting as chelate toward the gadolinium ion from one unit and monodentate toward a

  3. Mapping of the C3b-binding site of CR1 and construction of a (CR1)2-F(ab')2 chimeric complement inhibitor.

    Science.gov (United States)

    Kalli, K R; Hsu, P H; Bartow, T J; Ahearn, J M; Matsumoto, A K; Klickstein, L B; Fearon, D T

    1991-12-01

    CR1/CR2 chimeric receptors in which various short consensus repeats (SCRs) of CR1 were attached to CR2 were transiently expressed on COS cells, and assessed for the binding of polymerized C3b (pC3b) and anti-CR2 by immunofluorescence. Of COS cells expressing chimeras containing SCR 1-4, 1-3, 2-4, 1-2, and 2-3 of the long homologous repeats (LHRs) -B or -C, 96%, 66%, 23%, 0%, and 0%, respectively, bound pC3b. K562 cells were stably transfected with wild-type CR1, deletion mutants of CR1, and the CR1/CR2 chimeras, respectively, and assayed for binding of 125I-pC3b. The dissociation constants (Kd) for pC3b of wild-type CR1 and the LHR-BD and -CD constructs were in the range of 1.0-2.7 nM, and of the CR1/CR2 chimeras containing SCRs 1-4, 1-3, and 2-4 of LHR-B or -C were 1.8-2.4, 6-9, and 22-36 nM, respectively. The factor I-cofactor function of the CR1/CR2 chimeras paralleled the C3b-binding function of the constructs. A CR1/immunoglobulin (Ig) chimeric protein was prepared by fusing SCRs 1-4 of LHR-B to the heavy chains of a murine F(ab')2 anti-nitrophenacetyl (NP) monoclonal antibody. The (CR1)2-F(ab')2 chimera, which retained its specificity for NP, was as effective as soluble, full-length CR1 in binding pC3b, serving as a cofactor for factor I-mediated cleavage of C3b, and inhibiting activation of the alternative pathway, indicating that the bivalent expression of these SCRs reconstitutes the alternative pathway inhibitory function of CR1. The feasibility of creating CR1/Ig chimeras makes possible a new strategy of targeting complement inhibition by the use of Ig fusion partners having particular antigenic specificities.

  4. 40 CFR 270.165 - When may I begin physical construction of new units permitted under the RAP?

    Science.gov (United States)

    2010-07-01

    ... of new units permitted under the RAP? 270.165 Section 270.165 Protection of Environment ENVIRONMENTAL... PERMIT PROGRAM Remedial Action Plans (RAPs) Getting A Rap Approved § 270.165 When may I begin physical construction of new units permitted under the RAP? You must not begin physical construction of new units...

  5. Qualification of Daiichi Units 1, 2, and 3 Data for Severe Accident Evaluations - Process and Illustrative Examples from Prior TMI-2 Evaluations

    Energy Technology Data Exchange (ETDEWEB)

    Rempe, Joy Lynn [Idaho National Lab. (INL), Idaho Falls, ID (United States); Knudson, Darrell Lee [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2014-09-01

    The accidents at the Three Mile Island Unit 2 (TMI-2) Pressurized Water Reactor (PWR) and the Daiichi Units 1, 2, and 3 Boiling Water Reactors (BWRs) provide unique opportunities to evaluate instrumentation exposed to severe accident conditions. Conditions associated with the release of coolant and the hydrogen burn that occurred during the TMI-2 accident exposed instrumentation to harsh conditions, including direct radiation, radioactive contamination, and high humidity with elevated temperatures and pressures. As part of a program initiated in 2012 by the Department of Energy Office of Nuclear Energy (DOE-NE), a review was completed to gain insights from prior TMI-2 sensor survivability and data qualification efforts. This initial review focused on the set of sensors deemed most important by post-TMI-2 instrumentation evaluation programs. Instrumentation evaluation programs focused on data required by TMI-2 operators to assess the condition of the reactor and containment and the effect of mitigating actions taken by these operators. In addition, prior efforts focused on sensors providing data required for subsequent forensic evaluations and accident simulations. To encourage the potential for similar activities to be completed for qualifying data from Daiichi Units 1, 2, and 3, this report provides additional details related to the formal process used to develop a qualified TMI-2 data base and presents data qualification details for three parameters: primary system pressure; containment building temperature; and containment pressure. As described within this report, sensor evaluations and data qualification required implementation of various processes, including comparisons with data from other sensors, analytical calculations, laboratory testing, and comparisons with sensors subjected to similar conditions in large-scale integral tests and with sensors that were similar in design to instruments easily removed from the TMI-2 plant for evaluations. As documented

  6. Construction of Six Coordination Polymers Based on a 5,5′-(1,2-Ethynyl)bis-1,3-benzenedicarboxylic Ligand: Synthesis, Structure, Gas Sorption, and Magnetic Properties

    KAUST Repository

    Zheng, Bing

    2013-03-06

    Six novel coordination polymers based on a multifunctional ligand, 5,5\\'-(1,2-ethynyl)bis-1,3-benzenedicarboxylic (H4EBDC), namely, |(C3H7NO)2(H2O)7(C 2H5OH)3| [Zn2(C18H 6O8)(C10H8N2) 2] (1), |(C3H7NO)3(H2O)30- (CH3CN)2|[Zn 6(C18H6O8)3(C 6H12N2O2)2] (2), |(C 3H7NO)2- (H2O)2(H 3O)2|[Cd3(C18H6O 8)2] (3), |(C3H7NO)|[Mn- (C 18H8O8)(C3H7NO) 2] (4), |(C3H7NO)2(H2O)(C 2H7N)3| [Mn6(C18H 7O8)4(H2O)8] (5), and [Mn2(C18H6O8)(C3H 7NO)2] (6), have been constructed under solvothermal conditions and structurally characterized by single-crystal X-ray diffraction. In these compounds, the ligand, H4EBDC, exhibits different coordination modes and conformations, constructing various architectures by bridging a variety of metal ions or polynuclear clusters. Compound 1 forms a three-dimensional (3D) FSC network constructed from two-dimensional (2D) layer motifs joined by EBDC4- and 4,4\\'-bipyridine bridges. Compound 2 possesses an NbO topology by linking Zn2(CO2)4 units with the ligand, coordinated amine molecules fill the pores, while compound 3 exhibits a 3D FLU network with Cd2+ as the cation and features an infinite framework built from tricadmium clusters. Compound 4 is based on PtS net, constructed of 4-connected rectangular H4EBDC units with tetrahedral monometallic Mn(CO2)4 nodes. Compound 5 is composed of 2D layers with (3,6)-connected KGD topology, and compound 6 consists of a 3D PtS-X network, built by bridging a metal chain with the ligand. The structures of these compounds have been discussed together with their corresponding properties, such as gas storage, separation, and magnetic properties. © 2013 American Chemical Society.

  7. Construction and preoperational test of Kashiwasaki-Kariwa Nuclear Power Station Unit No. 6

    Energy Technology Data Exchange (ETDEWEB)

    Natsume, Nobuo; Noda, Hiroshi [Tokyo Electric Power Co. (Japan)

    1996-12-31

    Unit 6 of the Kashiwazaki-Kariwa nuclear power station of Tokyo Electric Power Company, the world`s first advanced boiling water reactor (ABWR), is progressing ahead of the originally established schedule since the start of its construction in September 1991, and commercial operation is scheduled to start before the end of 1996.

  8. Catalyzed steam gasification of biomass. Phase 3: Biomass Process Development Unit (PDU) construction and initial operation

    Science.gov (United States)

    Healey, J. J.; Hooverman, R. H.

    1981-12-01

    The design and construction of the process development unit (PDU) are described in detail, examining each system and component in order. Siting, the chip handling system, the reactor feed system, the reactor, the screw conveyor, the ash dump system, the PDU support equipment, control and information management, and shakedown runs are described.

  9. Units Coordination and the Construction of Improper Fractions: A Revision of the Splitting Hypothesis

    Science.gov (United States)

    Hackenberg, Amy J.

    2007-01-01

    This article communicates findings from a year-long constructivist teaching experiment about the relationship between four sixth-grade students' multiplicative structures and their construction of improper fractions. Students' multiplicative structures are the units coordinations that they can take as given prior to activity--i.e., the units…

  10. Risky use of alcohol, drugs and cigarettes in a psychosis unit: a 1 1/2 year follow-up of stability and changes after initial screening

    Directory of Open Access Journals (Sweden)

    Öjehagen Agneta

    2007-07-01

    Full Text Available Abstract Background Co-morbidity with substance use disorders negatively influences overall functioning in patients with psychosis. However, frequencies and courses of risky use of alcohol, drugs and cigarettes are rarely investigated in patients at psychosis units. The purpose of this study is to describe the use of alcohol, drugs and cigarettes in patients at a psychosis unit over a 1 1/2 year period after them having taken part in a screening investigation including a feed-back of the results to personnel. Relationships with sex and age are also described. Methods The patients' use of the substances was examined at baseline and at follow-up using three self-reporting instruments: Alcohol Use Disorders Identification Test (AUDIT, Drug Use Disorders Identification Test (DUDIT and Fagerstrom Test for Nicotine Dependence (FTND. Results One hundred and eighty-six patients out of 238 at baseline (78 percent took part in the follow-up. Total AUDIT score decreased in women. Older men more often developed a risky alcohol use. Older women tended to reduce their risky drug habits. On a group level the habits mostly were stable, but 11 percent changed their alcohol habits and 15 percent changed their smoking habits from risky to no/low risky use, or vice versa. Nine percent changed their drug habits, predominantly from risky to no/low risky use. Conclusion A more active approach towards alcohol, drug and smoking habits in psychosis units would probably be beneficial.

  11. Optimal control of the signal-to-noise ratio per unit time of a spin 1/2 particle: the crusher gradient and the radiation damping cases.

    Science.gov (United States)

    Lapert, M; Assémat, E; Glaser, S J; Sugny, D

    2015-01-28

    We show to which extent the signal to noise ratio per unit time of a spin 1/2 particle can be maximized. We consider a cyclic repetition of experiments made of a measurement followed by a radio-frequency magnetic field excitation of the system, in the case of unbounded amplitude. In the periodic regime, the objective of the control problem is to design the initial state of the system and the pulse sequence which leads to the best signal to noise performance. We focus on two specific issues relevant in nuclear magnetic resonance, the crusher gradient and the radiation damping cases. Optimal control techniques are used to solve this non-standard control problem. We discuss the optimality of the Ernst angle solution, which is commonly applied in spectroscopic and medical imaging applications. In the radiation damping situation, we show that in some cases, the optimal solution differs from the Ernst one.

  12. Optimal control of the signal-to-noise ratio per unit time of a spin 1/2 particle: The crusher gradient and the radiation damping cases

    Energy Technology Data Exchange (ETDEWEB)

    Lapert, M.; Glaser, S. J. [Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching (Germany); Assémat, E. [Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS-Université de Bourgogne, 9 Ave. A. Savary, BP 47 870, F-21078 Dijon Cedex (France); Department of Chemical Physics, Weizmann Institute of Science, 76100 Rehovot (Israel); Sugny, D., E-mail: dominique.sugny@u-bourgogne.fr [Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS-Université de Bourgogne, 9 Ave. A. Savary, BP 47 870, F-21078 Dijon Cedex (France)

    2015-01-28

    We show to which extent the signal to noise ratio per unit time of a spin 1/2 particle can be maximized. We consider a cyclic repetition of experiments made of a measurement followed by a radio-frequency magnetic field excitation of the system, in the case of unbounded amplitude. In the periodic regime, the objective of the control problem is to design the initial state of the system and the pulse sequence which leads to the best signal to noise performance. We focus on two specific issues relevant in nuclear magnetic resonance, the crusher gradient and the radiation damping cases. Optimal control techniques are used to solve this non-standard control problem. We discuss the optimality of the Ernst angle solution, which is commonly applied in spectroscopic and medical imaging applications. In the radiation damping situation, we show that in some cases, the optimal solution differs from the Ernst one.

  13. Serum penicillin G levels are lower than expected in adults within two weeks of administration of 1.2 million units.

    Directory of Open Access Journals (Sweden)

    Michael P Broderick

    Full Text Available When introduced in the 1950s, benzathine penicillin G (BPG was shown to be effective in eradicating group A beta-hemolytic streptococcus (GAS for at least 3 weeks after administration. Several studies since the 1990s suggest that at 3-4 weeks serum penicillin G levels are less than adequate (below MIC(90 of 0.016 µg/ml. We studied these levels for 4 weeks after the recommended dose of BPG in military recruits, for whom it is used as prophylaxis against GAS. The 329 subjects (mean age 20 years each received 1.2 million units BPG IM and gave sera 1 day post injection and twice more at staggered time points over 4 weeks. Serum penicillin G levels were measured by liquid chromatography/tandem mass spectometry. The half-life of serum penicillin G was 4.1 days. By day 11, mean levels were <0.02 µg/ml, and by day 15<0.01 µg/ml. Levels in more than 50% of the subjects were below 0.02 µg/ml on day 9, and <.01 µg/ml on day 16. There was no demonstrable effect of subject body-surface area nor of the four different lots of BPG used. These data indicate that in healthy young adults serum penicillin G levels become less than protective <2½ weeks after injection of 1.2 million units of BPG. The findings require serious consideration in future medical and public health recommendations for treatment and prophylaxis of GAS upper respiratory tract infections.

  14. Crystal structure solid-state cross polarization magic angle spinning 13C NMR correlation in luminescent d10 metal-organic frameworks constructed with the 1,2-Bis(1,2,4-triazol-4-yl)ethane ligand.

    Science.gov (United States)

    Habib, Hesham A; Hoffmann, Anke; Höppe, Henning A; Steinfeld, Gunther; Janiak, Christoph

    2009-03-02

    Hydrothermal reactions of 1,2-bis(1,2,4-triazol-4-yl)ethane (btre) with copper(II), zinc(II), and cadmium(II) salts have yielded the dinuclear complexes [Zn2Cl4(mu2-btre)2] (1) and [Zn2Br4(mu2-btre)2] (2), the one-dimensional coordination polymer infinity1[Zn(NCS)2(2-btre)] (3), the two-dimensional networks infinity2[Cu2(mu2-Cl)2(mu4-btre)] (4), infinity2[Cu2(mu2-Br)2(mu4-btre)] (5), and infinity2{[Cd6(mu3-OH)2(mu3-SO4)4(mu4-btre)3(H2O)6](SO4).6H2O} (6), and the three-dimensional frameworks infinity3{[Cu(mu4-btre)]ClO4.0.25H2O} (7), 3{[Zn(mu4-btre)(mu2-btre)](ClO4)2} (8), infinity3{[Cd(mu4-btre)(mu2-btre)](ClO4)2} (9), and infinity3[Cu2(mu2-CN)2(mu4-btre)] (10, 2-fold 3D interpenetrated framework). The copper-containing products 4, 5, 7, and 10 contain the metal in the +1 oxidation state, from a simultaneous redox and self-assembly reaction of the Cu(II) starting materials. The cyanide-containing framework 10 has captured the CN- ions from the oxidative btre decomposition. The perchlorate frameworks 7, 8, or 9 react in an aqueous NH4+PF6- solution with formation of the related PF6--containing frameworks. The differences in the metal-btre bridging mode (mu2-kappaN1:N1', mu2-kappaN1:N2 or mu4-kappaN1:N2:N1':N2') and the btre ligand symmetry can be correlated with different signal patterns in the 13C cross polarization magic angle spinning (CPMAS) NMR spectra. Compounds 2, 4, 5 and 7 to 10 exhibit fluorescence at 403-481 nm upon excitation at 270-373 nm which is not seen in the free btre ligand.

  15. Corrective Action Decision Document for Corrective Action Unit 204: Storage Bunkers, Nevada Test Site, Nevada, Revision 0 with ROTC 1, 2, and Errata

    Energy Technology Data Exchange (ETDEWEB)

    Wickline, Alfred

    2004-04-01

    This Corrective Action Decision Document (CADD) has been prepared for Corrective Action Unit (CAU) 204 Storage Bunkers, Nevada Test Site (NTS), Nevada, in accordance with the ''Federal Facility Agreement and Consent Order'' (FFACO) that was agreed to by the State of Nevada; U.S. Department of Energy (DOE); and the U.S. Department of Defense (FFACO, 1996). The NTS is approximately 65 miles (mi) north of Las Vegas, Nevada (Figure 1-1). The Corrective Action Sites (CASs) within CAU 204 are located in Areas 1, 2, 3, and 5 of the NTS, in Nye County, Nevada (Figure 1-2). Corrective Action Unit 204 is comprised of the six CASs identified in Table 1-1. As shown in Table 1-1, the FFACO describes four of these CASs as bunkers one as chemical exchange storage and one as a blockhouse. Subsequent investigations have identified four of these structures as instrumentation bunkers (CASs 01-34-01, 02-34-01, 03-34-01, 05-33-01), one as an explosives storage bunker (CAS 05-99-02), and one as both (CAS 05-18-02). The six bunkers included in CAU 204 were primarily used to monitor atmospheric testing or store munitions. The ''Corrective Action Investigation Plan (CAIP) for Corrective Action Unit 204: Storage Bunkers, Nevada Test Site, Nevada'' (NNSA/NV, 2002a) provides information relating to the history, planning, and scope of the investigation; therefore, it will not be repeated in this CADD. This CADD identifies potential corrective action alternatives and provides a rationale for the selection of a recommended corrective action alternative for each CAS within CAU 204. The evaluation of corrective action alternatives is based on process knowledge and the results of investigative activities conducted in accordance with the CAIP (NNSA/NV, 2002a) that was approved prior to the start of the Corrective Action Investigation (CAI). Record of Technical Change (ROTC) No. 1 to the CAIP (approval pending) documents changes to the preliminary action levels

  16. Construction Guide to Next-Generation High-Performance Walls in Climate Zones 3-5 - Part 1: 2x6 Walls

    Energy Technology Data Exchange (ETDEWEB)

    V. Kochkin and J. Wiehagen

    2017-08-31

    Part 1 of this Construction Guide to High-Performance Walls in Climate Zones 3-5 provides time-proven, practical, and cost-effective strategies for constructing durable, energy-efficient walls. It addresses walls constructed with 2x6 wood frame studs, wood structural panel (WSP) exterior sheathing, and a cladding system installed over WSP sheathing in low-rise residential buildings up to three stories high.

  17. Construction of 1.0 Mt/a Aromatics Unit Kicked off at PetroChina's Urumqi Petrochemical Complex

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ One of the major aromatics projects at the PetroChina Urumqi Petrochemical Company - the construction of 1.0 Mt/a paraxylene/aromatics integrated unit was officially kicked off on May 1, 2008 in Urumqi. The investment in this unit totals 3.867 billion RMB, making this unit the larg-est single-series one-million-ton-class aromatics integrated unit among the world's similar units.

  18. Conformational properties of 1,4- and 1,5-substituted 1,2,3-triazole amino acids – building units for peptidic foldamers

    KAUST Repository

    Kann, Nina

    2015-01-01

    © The Royal Society of Chemistry 2015. Peptidic foldamers have recently emerged as a novel class of artificial oligomers with properties and structural diversity similar to that of natural peptides, but possessing additional interesting features granting them great potential for applications in fields from nanotechnology to pharmaceuticals. Among these, foldamers containing 1,4- and 1,5-substitued triazole amino acids are easily prepared via the Cu- and Ru-catalyzed click reactions and may offer increased side chain variation, but their structural capabilities have not yet been widely explored. We here describe a systematic analysis of the conformational space of the two most important basic units, the 1,4-substitued (4Tzl) and the 1,5-substitued (5Tzl) 1,2,3-triazole amino acids, using quantum chemical calculations and NMR spectroscopy. Possible conformations of the two triazoles were scanned and their potential minima were located using several theoretical approaches (B3LYP/6-311++G(2d,2p), ωB97X-D/6-311++G(2d,2p), M06-2X/6-311++G(2d,2p) and MP2/6-311++G(2d,2p)) in different solvents. BOC-protected versions of 4Tzl and 5Tzl were also prepared via one step transformations and analyzed by 2D NOESY NMR. Theoretical results show 9 conformers for 5Tzl derivatives with relative energies lying close to each other, which may lead to a great structural diversity. NMR analysis also indicates that conformers preferring turn, helix and zig-zag secondary structures may coexist in solution. In contrast, 4Tzl has a much lower number of conformers, only 4, and these lack strong intraresidual interactions. This is again supported by NMR suggesting the presence of both extended and bent conformers. The structural information provided on these building units could be employed in future design of triazole foldamers. This journal is

  19. Comparative empirical analysis of temporal relationships between construction investment and economic growth in the United States

    Directory of Open Access Journals (Sweden)

    Navid Ahmadi

    2017-09-01

    Full Text Available The majority of policymakers believe that investments in construction infrastructure would boost the economy of the United States (U.S.. They also assume that construction investment in infrastructure has similar impact on the economies of different U.S. states. In contrast, there have been studies showing the negative impact of construction activities on the economy. However, there has not been any research attempt to empirically test the temporal relationships between construction investment and economic growth in the U.S. states, to determine the longitudinal impact of construction investment on the economy of each state. The objective of this study is to investigate whether Construction Value Added (CVA is the leading (or lagging indicator of real Gross Domestic Product (real GDP for every individual state of the U.S. using empirical time series tests. The results of Granger causality tests showed that CVA is a leading indicator of state real GDP in 18 states and the District of Columbia; real GDP is a leading indicator of CVA in 10 states and the District of Columbia. There is a bidirectional relationship between CVA and real GDP in 5 states and the District of Columbia. In 8 states and the District of Columbia, not only do CVA and real GDP have leading/lagging relationships, but they are also cointegrated. These results highlight the important role of the construction industry in these states. The results also show that leading (or lagging lengths vary for different states. The results of the comparative empirical analysis reject the hypothesis that CVA is a leading indicator of real GDP in the states with the highest shares of construction in the real GDP. The findings of this research contribute to the state of knowledge by quantifying the temporal relationships between construction investment and economic growth in the U.S. states. It is expected that the results help policymakers better understand the impact of construction investment

  20. Counterterrorism and Potential Constructive Cooperation Between China and the United States

    Energy Technology Data Exchange (ETDEWEB)

    LE,RONGRONG

    2003-02-01

    Terrorism is a scourge common to the international community and its threat to world peace and stability is severe and imminent. This paper evaluates the campaign against terrorism and the possible modalities of constructive cooperation between China and the United States in this fight. Technical cooperation can enhance Sino-U.S. security capabilities for dealing with the terrorist threat. This paper identifies specific bilateral cooperative activities that may benefit common interests. Focusing on protecting people, facilities, and infrastructure, Sino-U.S. cooperation may introduce protective technologies and training, including means of boosting port and border security, and detecting explosives or nuclear materials. Cooperation will not only enhance the global counterterrorism campaign, but also form a sound foundation for constructive and cooperative relations between the two countries.

  1. Radical-Mediated 1,2-Formyl/Carbonyl Functionalization of Alkenes and Application to the Construction of Medium-Sized Rings.

    Science.gov (United States)

    Li, Zhong-Liang; Li, Xiao-Hua; Wang, Na; Yang, Ning-Yuan; Liu, Xin-Yuan

    2016-11-21

    A novel radical 1,2-formylfunctionalization of alkenes involving 1,2(4,5)-formyl migration triggered by addition of various carbon- and heteroatom-centered radicals to alkenes has been developed for the first time, thus providing straightforward access to diverse β-functionalized aldehydes with good efficiency, remarkable selectivity, and excellent functional group tolerance. Analogous transformations mediated by a keto-carbonyl migration have also been effected under similar conditions. This method was used to access ring systems including various benzannulated nine-, ten-, and eleven-membered rings, complex 6-5(6,7)-6(5) fused rings, and bridged rings with diverse functionalities. © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. Expanded organic building units for the construction of highly porous metal-organic frameworks.

    Science.gov (United States)

    Kong, Guo-Qiang; Han, Zhi-Da; He, Yabing; Ou, Sha; Zhou, Wei; Yildirim, Taner; Krishna, Rajamani; Zou, Chao; Chen, Banglin; Wu, Chuan-De

    2013-10-25

    Two new organic building units that contain dicarboxylate sites for their self-assembly with paddlewheel [Cu2(CO2)4] units have been successfully developed to construct two isoreticular porous metal-organic frameworks (MOFs), ZJU-35 and ZJU-36, which have the same tbo topologies (Reticular Chemistry Structure Resource (RCSR) symbol) as HKUST-1. Because the organic linkers in ZJU-35 and ZJU-36 are systematically enlarged, the pores in these two new porous MOFs vary from 10.8 Å in HKUST-1 to 14.4 Å in ZJU-35 and 16.5 Å in ZJU-36, thus leading to their higher porosities with Brunauer-Emmett-Teller (BET) surface areas of 2899 and 4014 m(2) g(-1) for ZJU-35 and ZJU-36, respectively. High-pressure gas-sorption isotherms indicate that both ZJU-35 and ZJU-36 can take up large amounts of CH4 and CO2, and are among the few porous MOFs with the highest volumetric storage of CH4 under 60 bar and CO2 under 30 bar at room temperature. Their potential for high-pressure swing adsorption (PSA) hydrogen purification was also preliminarily examined and compared with several reported MOFs, thus indicating the potential of ZJU-35 and ZJU-36 for this important application. Studies show that most of the highly porous MOFs that can volumetrically take up the greatest amount of CH4 under 60 bar and CO2 under 30 bar at room temperature are those self-assembled from organic tetra- and hexacarboxylates that contain m-benzenedicarboxylate units with the [Cu2(CO2)4] units, because this series of MOFs can have balanced porosities, suitable pores, and framework densities to optimize their volumetric gas storage. The realization of the two new organic building units for their construction of highly porous MOFs through their self-assembly with [Cu2(CO2)4] units has provided great promise for the exploration of a large number of new tetra- and hexacarboxylate organic linkers based on these new organic building units in which different aromatic backbones can be readily incorporated

  3. Construction and validation of the SON-R 5 1/2-17, the Snijders-Oomen non-verbal intelligence test

    NARCIS (Netherlands)

    Laros, Jacob Arie; Tellegen, Peter Johannes

    1991-01-01

    In this thesis the construction and validation of the SON-R 5,5-17 is described, the recent revision of the Snijders-Oomen non-verbal intelligence test. The SON-R is an individual test of (non-verbal) intelligence for children in the ages of 51/2 to 17 years. The test was published in 1989 with an e

  4. Solvothermal Synthesis, Crystal Structure and Luminescent Property of a Dy(Ⅲ) Coordination Polymer Constructed by 1,2,4,5-Benzenetetracarboxylic Acid

    Institute of Scientific and Technical Information of China (English)

    BAI Wei-Wei; ZHU Ning; HAN Li-Min; tONG Hai-Long; GAOYuan-Yuan; SUO Quan-Ling

    2012-01-01

    A three-dimensional coordination polymer {[Dy(H2btec)2/4(btec)3/6(H2O)]·2H2O} n has been synthesized through the reaction of DyCl3·6H2O and 1,2,4,5-benzenetetracarboxylic acid by solvothermal technique, and the crystal structure was determined by X-ray diffraction. The Dy(Ⅲ) coordination polymer crystallizes in monoclinic, space group P21/n with a=10.7063(1), b=7.1491(1), c=17.1197(3), α=90, β=97.10, γ=90°, V=1300.31(3)3 , C10H9DyO11 , Dc=2.389g/cm3 , Z=4, F(000)=892, the final R=0.0165 and wR=0.0448 for I 〉 2σ(I). The title coordination polymer possesses a three-dimensional framework consisting of nine-coordinate Dy(Ⅲ) centers and two kinds of coordination modes for the 1,2,4,5-benzenetetracarboxylic acid ligands. Every btec4- ligand (deprotonated four protons from 1,2,4,5-benzenetetracarboxylic acid) in the title coordination polymer can clamp three Dy atoms like forceps, which could make the Dy atoms closer in the area of metal-metal interaction. The 3-D framework of the coordination polymer has many channels occupied by the free guest water molecules, and the hydrogen bonds between the coordinated carboxylic groups and guest water molecules could stabilize the crystal structure of the title coordination polymer. In addition, the luminescence properties were also studied.

  5. Solar hot water systems for the southeastern United States: principles and construction of breadbox water heaters

    Energy Technology Data Exchange (ETDEWEB)

    None

    1983-02-01

    The use of solar energy to provide hot water is among the easier solar technologies for homeowners to utilize. In the Southeastern United States, because of the mild climate and abundant sunshine, solar energy can be harnessed to provide a household's hot water needs during the non-freezing weather period mid-April and mid-October. This workbook contains detailed plans for building breadbox solar water heaters that can provide up to 65% of your hot water needs during warm weather. If fuel costs continue to rise, the annual savings obtained from a solar water heater will grow dramatically. The designs in this workbook use readily available materials and the construction costs are low. Although these designs may not be as efficient as some commercially available systems, most of a household's hot water needs can be met with them. The description of the breadbox water heater and other types of solar systems will help you make an informed decision between constructing a solar water heater or purchasing one. This workbook is intended for use in the southeastern United States and the designs may not be suitable for use in colder climates.

  6. Development of Spiro[cyclopenta[1,2-b:5,4-b']dithiophene-4,9'-fluorene]-Based A-π-D-π-A Small Molecules with Different Acceptor Units for Efficient Organic Solar Cells.

    Science.gov (United States)

    Wang, Wengong; Shen, Ping; Dong, Xinning; Weng, Chao; Wang, Guo; Bin, Haijun; Zhang, Jing; Zhang, Zhi-Guo; Li, Yongfang

    2017-02-08

    Three acceptor-π-donor-π-acceptor (A-π-D-π-A) small molecules (STFYT, STFRDN, and STFRCN) with spiro[cyclopenta[1,2-b:5,4-b']dithiophene-4,9'-fluorene] (STF) as the central donor unit, terthiophene as the π-conjugated bridge, indenedione, 3-ethylrhodanine, or 2-(1,1-dicyanomethylene)rhodanine as the acceptor unit are designed, synthesized, and characterized as electron donor materials in solution-processing organic solar cells (OSCs). The effects of the spiro STF-based central core and different acceptors on the molecular configuration, absorption properties, electronic energy levels, carrier transport properties, the morphology of active layers, and photovoltaic properties are investigated in detail. The three molecules exhibit desirable physicochemical features: wide absorption bands (300-850 nm) and high molar absorption coefficients (4.82 × 10(4) to 7.56 × 10(4) M(-1) cm(-1)) and relatively low HOMO levels (-5.15 to -5.38 eV). Density functional theory calculations reveal that the spiro STF central core benefits to reduce the steric hindrance effect between the central donor block and terthiophene bridge and suppress excessive intermolecular aggregations. The optimized OSCs based on these molecules deliver power conversion efficiencies (PCEs) of 6.68%, 3.30%, and 4.33% for STFYT, STFRDN, and STFRCN, respectively. The higher PCE of STFYT-based OSCs should be ascribed to its better absorption ability, higher and balanced hole and electron mobilities, and superior active layer morphology as compared to the other two compounds. So far, this is the first example of developing the A-π-D-π-A type small molecules with a spiro central donor core for high-performance OSC applications. Meanwhile, these results demonstrate that using spiro central block to construct A-π-D-π-A molecule is an alternative and effective strategy for achieving high-performance small molecule donor materials.

  7. HYDRAULIC UNITS FOR DRIVING SYSTEMS OF RUNNING EQUIPMENT IN ROAD CONSTRUCTION MACHINERY

    Directory of Open Access Journals (Sweden)

    A. Ja. Kotlobai

    2016-01-01

    Full Text Available Operational efficiency of multi-functional road construction machines depends on number of working bodies which are simultaneously performing technological operations. Systems for propulsion pto to the running equipment drive and active working bodies of road construction machines are developing in the way of using three-axis hydraulic drives. When designing a hydraulic system for road construction machinery dividing of power flow from propulsion to the running equipment drive and active working bodies is considered as rather essential problem. Leading companies do not pay attention to the development of flow divider designs, preferring to produce more expensive multi-flow pumps. One of the ways to increase efficiency of multi-functional road construction machinery is an implementation of running equipment hydraulic driving system based on a mono-aggregate pump unit which consists of a pump and a volumetric divider of power fluid flow. A principle of volumetric division and summing-up of power fluid flows, technical realization and methodology for calculation of key parameters of discrete flow distributors has been developed on the basis of discrete hydraulics regulations. The paper presents results of mathematical modeling of hydraulic systems equipped with the discrete flow distributor. Analysis of a dual-motor hydraulic drive operation has shown the following results: a discrete flow distributor ensures independent load mode of the current consumer circuit operation from the load mode of the second consumer circuit within a wide range of loads; rational value of working fluid flow discretization parameter is the following value interval k = 4–6, maximum value of parameter efficiency is reached when an angular velocity of a distributor rotor coincides with the angular velocity of a pump shaft; discrete flow distributor provides a possibility to change parameters of hydraulic flow feeding in consumers’ pressure lines within a wide range

  8. Construction of amphiphilic copolymer nanoparticles based on hyperbranched poly (amine-ester) and 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine as drug carriers for cancer therapy.

    Science.gov (United States)

    Wu, Yan; Jiao, Fang; Han, Siyuan; Fan, Tengfei; Liu, Ying; Li, Wei; Hu, Liming; Zhao, Yuliang; Chen, Chunying

    2011-12-01

    Novel amphiphilic copolymer nanoparticles (HPAE-co-PLA-DPPE) composed of hyperbranched poly (amine-ester), polylactide and 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE) segments were designed and synthesized that provided high encapsulation efficiency. These nanoparticles (NPs) were used to encapsulate an antitumor model drug, doxorubicin (DOX). The resulting NPs exhibited high encapsulation efficiency to DOX under an appropriate condition. In vitro release experiments revealed that the release of DOX from NPs was faster at pH 4.5 than that at pH 7.4 or pH 6.0. Confocal microscopy observation indicated that the DOX-loaded NPs can enter cells and localize in lysosomes that can be released quickly into the cytoplasm. The DOX-loaded NPs showed comparable anticancer efficacy with the free drug both in vivo and in vitro. These results demonstrate a feasible application of the hyperbranched copolymer, HPAE-co-PLA-DPPE, as a promising nanocarrier for intracellular delivery of antitumor drugs. In this paper, the development of novel amphiphilic copolymer nanoparticles is discussed with the goal of establishing high encapsulation efficiency for chemotherapy drugs. Copyright © 2011 Elsevier Inc. All rights reserved.

  9. Discuss the Project Management of Construction Unit%浅谈建设单位项目管理

    Institute of Scientific and Technical Information of China (English)

    李洪桥

    2014-01-01

    建筑项目管理人员要重点关注工程施工的质量水平,并且作为各个建筑单位总的组织者和管理者,不但要参与和监督各个单位的实际工作,还要促进各个单位之间的相互协调与合作,保证建筑项目的顺利完工。%Construction project management staff should foc-us on the quality level of engineering construction, and as the overal organizer and manager of various construction units sh-ould not only participate and supervise the actual work of eve-ry unit, but also promote the coordination and cooperation am-ong the various units so as to ensure the successful completion of the construction project.

  10. TALEN construction via "Unit Assembly" method and targeted genome modifications in zebrafish.

    Science.gov (United States)

    Huang, Peng; Xiao, An; Tong, Xiangjun; Zu, Yao; Wang, Zhanxiang; Zhang, Bo

    2014-08-15

    Transcription activator-like effector nucleases (TALENs) are engineered endonucleases composed of a customized transcription activator-like effector (TALE) DNA-binding domain and a FokI DNA cleavage domain. TALENs induce DNA double-strand breaks (DSBs) at their target sites on the chromosome and have been successfully used for genome engineering in many species and cultured cells. Zebrafish is a very popular model organism in both basic and clinical research. Here, we describe the details of construction of customized TALENs using the "Unit Assembly" (UA) method, as well as three applications of zebrafish genome manipulations using TALENs: gene knock-out, large chromosome deletion, and gene knock-in by homologous recombination.

  11. THE EVOLUTION OF THE DESIGN AND CONSTRUCTION OF MASONRY BUILDINGS IN THE UNITED STATES

    Directory of Open Access Journals (Sweden)

    Richard E. Klingner

    2012-12-01

    Full Text Available In this paper, the process used to develop building codes in the United States of America (USA is summarized, with emphasis on masonry. Masonry materials used in the USA are discussed. Types of masonry construction in the USA are reviewed, addressing historical as well as modern masonry. Current non-structural and structural applications of masonry in the USA are reviewed. Historical development of masonry codes in the USA is summarized, with emphasis on the current Masonry Standards Joint Committee (MSJC Code and Specification. Future trends in that document are predicted. The paper closes with a list of challenges to the masonry industry, and a list of focused research topics intended to meet those challenges.

  12. Radioactive air emissions notice of construction for HEPA filtered vacuum radioactive air emission units

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, R.E.

    1997-10-27

    This notice of construction (NOC) requests a categorical approval for construction and operation of certain portable high-efficiency particulate air (HEPA) filtered vacuum radionuclide airborne emission units (HVUs). Approval of this NOC application is intended to allow operation of the HVUs without prior project-specific approval. This NOC does not request replacement or supersedence of any previous agreements/approvals by the Washington State Department of Health (WDOH) for the use of vacuums on the Hanford Site. These previous agreements/approvals include the approved NOCs for the use of EuroClean HEPA vacuums at the T Plant Complex and the Kelly Decontamination System at the Plutonium-Uranium Extraction (PUREX) Plant. Also, this NOC does not replace or supersede the agreement reached regarding the use of HEPA hand-held/shop-vacuum cleaners for routine cleanup activities conducted by the Environmental Restoration Project. Routine cleanup activities are conducted during the surveillance and maintenance of inactive waste sites (Radioactive Area Remedial Action Project) and inactive facilities. HEPA hand-held/shop-vacuum cleaners are used to clean up spot surface contamination areas found during outdoor radiological field surveys, and to clean up localized radiologically contaminated material (e.g., dust, dirt, bird droppings, animal feces, liquids, insects, spider webs, etc.). This agreement, documented in the October 12, 1994 Routine Meeting Minutes, is based on routine cleanup consisting of spot cleanup of low-level contamination provided that, in each case, the source term potential would be below 0.1 millirem per year. This application is intended to request sitewide approval for the new activities, and provide an option for any facility on the site to use this approval, within the terms of this NOC. The HVUs used in accordance with this NOC will support reduction of radiological contamination at various locations on the Hanford Site. Radiation Protection Air

  13. Geology of the Conterminous United States at 1:2,500,000 Scale -- A Digital Representation of the 1974 P.B. King and H.M. Beikman Map

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This CD-ROM contains a digital version of the Geologic Map of the United States, originally published at a scale of 1:2,500,000 (King and Beikman, 1974b). It...

  14. Stabilization of Parallel Triplexes by Twisted Intercalating Nucleic Acids (TINAs) Incorporating 1,2,3-Triazole Units and Prepared by Microwave-Accelerated Click Chemistry

    DEFF Research Database (Denmark)

    Géci, Imrich; Filitchev, Vyacheslav Viatcheslav; Pedersen, Erik Bjerreg.

    2007-01-01

    and acceleration by microwave irradiation. The twisted intercalating nucleic acids (TINAs) obtained in these reactions, possessing bulged insertions of (R)-3-O-{4-[1-(pyren-1-yl)-1H-1,2,3-triazol-4-yl]benzyl}glycerol (7), formed parallel triplexes with thermal stabilities of 20.0, 34.0, and 40.0 °C at pH 7...

  15. Construction

    Science.gov (United States)

    2002-01-01

    Harbor Deepening Project, Jacksonville, FL Palm Valley Bridge Project, Jacksonville, FL Rotary Club of San Juan, San Juan, PR Tren Urbano Subway...David. What is nanotechnology? What are its implications for construction?, Foresight/CRISP Workshop on Nanotechnology, Royal Society of Arts

  16. Stabilization of Parallel Triplexes by Twisted Intercalating Nucleic Acids (TINAs) Incorporating 1,2,3-Triazole Units and Prepared by Microwave-Accelerated Click Chemistry

    DEFF Research Database (Denmark)

    Géci, Imrich; Filitchev, Vyacheslav Viatcheslav; Pedersen, Erik Bjerreg.

    2007-01-01

    A highly efficient method for postsynthetic modification of unprotected oligonucleotides incorporating internal insertions of (R)-1-O-(4-ethynylbenzyl)glycerol has been developed through the application of click chemistry with water-insoluble pyren-1-yl azide and water-soluble benzyl azide...... and acceleration by microwave irradiation. The twisted intercalating nucleic acids (TINAs) obtained in these reactions, possessing bulged insertions of (R)-3-O-{4-[1-(pyren-1-yl)-1H-1,2,3-triazol-4-yl]benzyl}glycerol (7), formed parallel triplexes with thermal stabilities of 20.0, 34.0, and 40.0 °C at pH 7...

  17. Internally protected amino sugar equivalents from enantiopure 1,2-oxazines: synthesis of variably configured carbohydrates with C-branched amino sugar units.

    Science.gov (United States)

    Pfrengle, Fabian; Reissig, Hans-Ulrich

    2010-10-18

    A stereodivergent synthesis of differently configured C2-branched 4-amino sugar derivatives was accomplished. The Lewis acid mediated rearrangement of phenylthio-substituted 1,2-oxazines delivered glycosyl donor equivalents that can directly be employed in glycosidation reactions. Treatment with methanol provided internally protected amino sugar equivalents that have been transformed into the stereoisomeric methyl glycosides 28, ent-28, 29, ent-29 and 34 in two simple reductive steps. Reaction with natural carbohydrates or bicyclic amino sugar precursors allowed the synthesis of homo-oligomeric di- and trisaccharides 44, 46 and 47 or a hybrid trisaccharide 51 with natural carbohydrates. Access to a bivalent amino sugar derivative 54 was accomplished by reaction of rearrangement product 10 with 1,5-pentanediol. Alternatively, when a protected L-serine derivative was employed as glycosyl acceptor, the glycosylated amino acid 60 was efficiently prepared in few steps. In this report we describe the synthesis of unusual amino sugar building blocks from enantiopure 1,2-oxazines that can be attached to natural carbohydrates or natural product aglycons to produce new natural product analogues with potential applications in medicinal chemistry.

  18. Design, synthesis, and biological evaluation of pirenzepine analogs bearing a 1,2-cyclohexanediamine and perhydroquinoxaline units in exchange for the piperazine ring as antimuscarinics.

    Science.gov (United States)

    Minarini, Anna; Marucci, Gabriella; Bellucci, Cristina; Giorgi, Gianluca; Tumiatti, Vincenzo; Bolognesi, Maria Laura; Matera, Riccardo; Rosini, Michela; Melchiorre, Carlo

    2008-08-01

    Pirenzepine (2) is one of the most selective muscarinic M(1) versus M(2) receptor antagonists known. A series of 2 analogs, in which the piperazyl moiety was replaced by a cis- and trans-cyclohexane-1,2-diamine (3-6) or a trans- and cis-perhydroquinoxaline rings (7 and 8) were prepared, with the aim to investigate the role of the piperazine ring of 2 in the interaction with the muscarinic receptors. The structural change leading to compounds 3-6 abolished in binding assays the muscarinic M(1)/M(2) selectivity of 2, due to an increased M(2) affinity. Rather, compounds 3-6 displayed a reversed selectivity showing more affinity at the muscarinic M(2) receptor than at all the other subtypes tested.

  19. Stabilization of parallel triplexes by twisted intercalating nucleic acids (TINAs) incorporating 1,2,3-triazole units and prepared by microwave-accelerated click chemistry.

    Science.gov (United States)

    Géci, Imrich; Filichev, Vyacheslav V; Pedersen, Erik B

    2007-01-01

    A highly efficient method for postsynthetic modification of unprotected oligonucleotides incorporating internal insertions of (R)-1-O-(4-ethynylbenzyl)glycerol has been developed through the application of click chemistry with water-insoluble pyren-1-yl azide and water-soluble benzyl azide and acceleration by microwave irradiation. The twisted intercalating nucleic acids (TINAs) obtained in these reactions, possessing bulged insertions of (R)-3-O-{4-[1-(pyren-1-yl)-1H-1,2,3-triazol-4-yl]benzyl}glycerol (7), formed parallel triplexes with thermal stabilities of 20.0, 34.0, and 40.0 degrees C at pH 7.2 in the cases of one, two, or three insertions of 7, respectively, separated by three nucleic bases. An oligonucleotide with four insertions of 7--each between three nucleic bases in the sequence--was unable to form complexes with complementary single- or double-stranded DNAs, as a result of self-aggregation of the pyrene moieties. This assumption was supported by the formation of a very strong excimer band at 460 nm in the fluorescence spectra. Molecular modeling of the parallel triplex with bulged insertion of the monomer 7 in the triplex-forming oligonucleotide (TFO) showed that only the pyrene moiety was stacking between the bases of the dsDNA, whereas 1,2,3-triazole did not participate in the triplex stabilization. Thermal denaturation studies of the duplexes and triplexes, as well as the fluorescence properties of TINA-triazole 7, are discussed and compared with previous studies on TINA.

  20. Construction and psychometric testing of the EMPATHIC questionnaire measuring parent satisfaction in the pediatric intensive care unit

    NARCIS (Netherlands)

    Latour, Jos M.; van Goudoever, Johannes B.; Duivenvoorden, Hugo J.; Albers, Marcel J. I. J.; van Dam, Nicolette A. M.; Dullaart, Eugenie; van Heerde, Marc; de Neef, Marjorie; Verlaat, Carin W. M.; van Vught, Elise M.; Hazelzet, Jan A.

    2011-01-01

    To construct and test the reliability and validity of the EMpowerment of PArents in THe Intensive Care (EMPATHIC) questionnaire measuring parent satisfaction in the pediatric intensive care unit (PICU). Structured development and psychometric testing of a parent satisfaction-with-care instrument wit

  1. Carbon Mitigation Impacts of Increased Softwood Lumber and Structural Panel Use for Nonresidential Construction in the United States

    Science.gov (United States)

    Prakash Nepal; Kenneth E. Skog; David B. McKeever; Richard D. Bergman; Karen L. Abt; Robert C. Abt

    2016-01-01

    More wood use in the United States to construct low-rise nonresidential (NR) buildings would increase consumption and production of softwood (SW) lumber, engineered wood products, and structural and nonstructural wood panels. Using a consequential life-cycle analysis, we estimated the change in net CO2 emissions thatwould be caused by increased...

  2. Construction and psychometric testing of the EMPATHIC questionnaire measuring parent satisfaction in the pediatric intensive care unit

    NARCIS (Netherlands)

    J.M. Latour (Jos); J.B. van Goudoever (Hans); H.J. Duivenvoorden (Hugo); M.J.I.J. Albers (Marcel); N.A.M. van Dam (Nicolette); E. Dullaart (Eugenie); M. van Heerde (Marc); M. de Neef (Marjorie); C.W.M. Verlaat (Carin); E.M. van Vught (Elise); J.A. Hazelzet (Jan)

    2011-01-01

    textabstractAbstract PURPOSE: To construct and test the reliability and validity of the EMpowerment of PArents in THe Intensive Care (EMPATHIC) questionnaire measuring parent satisfaction in the pediatric intensive care unit (PICU). METHODS: Structured development and psychometric testing of a paren

  3. Active learning units interrelated using TIC’s tools in architectural construction

    Directory of Open Access Journals (Sweden)

    Núria Martí Audí

    2013-08-01

    Full Text Available 0 0 1 141 779 USAL 6 1 919 14.0 Normal 0 21 false false false ES JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-ansi-language:ES; mso-fareast-language:EN-US;} The presence of new technologies in the university world is a matter of fact. Nevertheless, it has not always blended correctly as in many cases TIC incorporation has not taken alumni opinion understood as final users. A correct implementation might evaluate some variables as satisfaction, need, interest and finally that versatility to adapt it to proficient professional training on a regular basis. This paper analyses a new approach to learning in the field of Architectural Construction based on a series of strategically designed and interactive units. The centre of these is the collaborative project; this is based on complex problem-solving situations akin to the professional world; where theory and practice are combined in a discovery-learning process. The tools of Information and Communication Technology are applied, simultaneously facilitating the student’s autonomy in acquiring skills and knowledge.

  4. Occupational safety issues in residential construction surveyed in Wisconsin, United States.

    Science.gov (United States)

    Choi, Sang D; Carlson, Kathryn

    2014-01-01

    Residential construction is a high-risk industry in the U.S. due to the exposure to work-related safety hazards and fall injuries. This study aimed to examine the safety training and safe work practices of construction workers within the small residential construction industry. In order to achieve the study objectives, a survey was designed and sent to approximately 200 Wisconsin based residential construction contractors. About one third of the respondents stated that they did not have any form of safety programs. The study indicated that the most common types of work-related injuries in residential construction were slips/trips/falls and cuts/lacerations. The survey findings also suggested that the residential construction contractors needed to increase the utilization of fall protection safety equipment. Further education and subject matter expert training could provide benefits to improve occupational safety and health of the small business workforce in the residential construction industry.

  5. The extreme wave interaction with the constructions of the breakwaters including the damping chamber that was filled up with the stones and concrete units

    Science.gov (United States)

    Maximov, Vasily; Nudner, Igor; Revyakin, Alexei

    2010-05-01

    The eight types of the breakwaters constructions including the damping chamber were experimentally studied. The damping chamber has the infilling with the stones, with the concrete units, or with the combinations of the stones and units. The back wall of the damping chamber was impermeable. The construction varies by the volume and by the type of the infilling. The experiments to specify the pressure at the internal walls of the damping chamber, the reflected wave height, and the wave height at the front wall were performed at the hydro flume. This flume has the following dimensions: 43 m length, 0.7 m width, and 1.2 m height. The periodic waves were produced by the shield-type wavemaker. We vary in this research the periods of the waves over the range 0.8 s to 1.64 s, and the wave height over the range 10 cm to 24 cm. The analysis revealed the most improved structure possessing the good wave-protective features.

  6. Corrective Action Investigation Plan for Corrective Action Unit 410: Waste Disposal Trenches, Tonopah Test Range, Nevada, Revision 0 (includes ROTCs 1, 2, and 3)

    Energy Technology Data Exchange (ETDEWEB)

    NNSA/NV

    2002-07-16

    This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office's approach to collect the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 410 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 410 is located on the Tonopah Test Range (TTR), which is included in the Nevada Test and Training Range (formerly the Nellis Air Force Range) approximately 140 miles northwest of Las Vegas, Nevada. This CAU is comprised of five Corrective Action Sites (CASs): TA-19-002-TAB2, Debris Mound; TA-21-003-TANL, Disposal Trench; TA-21-002-TAAL, Disposal Trench; 09-21-001-TA09, Disposal Trenches; 03-19-001, Waste Disposal Site. This CAU is being investigated because contaminants may be present in concentrations that could potentially pose a threat to human health and/or the environment, and waste may have been disposed of with out appropriate controls. Four out of five of these CASs are the result of weapons testing and disposal activities at the TTR, and they are grouped together for site closure based on the similarity of the sites (waste disposal sites and trenches). The fifth CAS, CAS 03-19-001, is a hydrocarbon spill related to activities in the area. This site is grouped with this CAU because of the location (TTR). Based on historical documentation and process know-ledge, vertical and lateral migration routes are possible for all CASs. Migration of contaminants may have occurred through transport by infiltration of precipitation through surface soil which serves as a driving force for downward migration of contaminants. Land-use scenarios limit future use of these CASs to industrial activities. The suspected contaminants of potential concern which have been identified are volatile organic compounds; semivolatile organic compounds; high explosives; radiological constituents including depleted

  7. Design, construction and testing of a low-cost automated (68)Gallium-labeling synthesis unit for clinical use.

    Science.gov (United States)

    Heidari, Pedram; Szretter, Alicia; Rushford, Laura E; Stevens, Maria; Collier, Lee; Sore, Judit; Hooker, Jacob; Mahmood, Umar

    2016-01-01

    The interest in (68)Gallium labeled PET probes continues to increase around the world. Widespread use in Europe and Asia has led to great interest for use at numerous sites in the US. One barrier to entry is the cost of the automated synthesis units for relatively simple labeling procedures. We describe the construction and testing of a relatively low-cost automated (68)Ga-labeling unit for human-use. We provide a guide for construction, including part lists and synthesis timelists to facilitate local implementation. Such inexpensive systems could help increase use around the globe and in the US in particular by removing one of the barriers to greater widespread availability. The developed automated synthesis unit reproducibly synthesized (68)Ga-DOTATOC with average yield of 71 ± 8% and a radiochemical purity ≥ 95% in a synthesis time of 25 ± 1 minutes. Automated product yields are comparable to that of manual synthesis. We demonstrate in-house construction and use of a low-cost automated synthesis unit for labeling of DOTATOC and similar peptides with (68)Gallium.

  8. Li1.2Mn0.6Ni0.1Co0.1O2 microspheres constructed by hierarchically arranged nanoparticles as lithium battery cathode with enhanced electrochemical performance

    Science.gov (United States)

    Remith, P.; Kalaiselvi, N.

    2014-11-01

    Novel lithium-rich layered Li1.2Mn0.6Ni0.1Co0.1O2 microspheres containing hierarchically arranged and interconnected nanostructures have been synthesized by a combination of template-free co-precipitation and solid-state methods. The in situ formed γ-MnO2 spherical template upon co-precipitation gets sacrificed during the course of solid-state fusion of cobalt, nickel and lithium precursors to produce the title compound in the form of microspheres constructed by nanoparticles as building blocks. Porous and hollow microspheres of Li1.2Mn0.6Ni0.1Co0.1O2 are formed out of the spontaneous aggregation of nanoparticles, obtained from the custom-designed synthesis protocol. The growth mechanism of Li1.2Mn0.6Ni0.1Co0.1O2 spheres could be understood in terms of the Kirkendall effect and Ostwald ripening. The nanocrystalline Li1.2Mn0.6Ni0.1Co0.1O2 compound is obtained as a solid solution consisting of rhombohedral R3&cmb.macr;m and monoclinic C2/m group symmetries, as evidenced by XRD, Raman spectra and HRTEM equipped with FFT and STEM. The currently synthesized Li1.2Mn0.6Ni0.1Co0.1O2 cathode exhibits an appreciable discharge capacity of 242 mA h g-1 at a current density of 50 mA g-1, due to the synergistic effect of the capacity obtained from the rhombohedral and monoclinic phases.Novel lithium-rich layered Li1.2Mn0.6Ni0.1Co0.1O2 microspheres containing hierarchically arranged and interconnected nanostructures have been synthesized by a combination of template-free co-precipitation and solid-state methods. The in situ formed γ-MnO2 spherical template upon co-precipitation gets sacrificed during the course of solid-state fusion of cobalt, nickel and lithium precursors to produce the title compound in the form of microspheres constructed by nanoparticles as building blocks. Porous and hollow microspheres of Li1.2Mn0.6Ni0.1Co0.1O2 are formed out of the spontaneous aggregation of nanoparticles, obtained from the custom-designed synthesis protocol. The growth mechanism of Li1.2

  9. Construction and characterization of a glycoprotein E deletion mutant of bovine herpesvirus type 1.2 strain isolated in Brazil Construção e caracterização de uma amostra de BoHV-1.2 isolada no Brasil com uma deleção no gene da glicoproteína E

    Directory of Open Access Journals (Sweden)

    Ana C. Franco

    2002-09-01

    Full Text Available This paper describes the construction and characterization of a Brazilian strain of bovine herpesvirus type 1.2a (BoHV-1.2a with a deletion of the glycoprotein E (gE gene. The deletion was introduced by co-transfection of a deletion fragment containing the 5´and 3´gE flanking regions and genomic DNA of wild type BoHV-1 into bovine cells. Isolation of gE deletion mutant was performed by immunoperoxidase staining with an anti-gE monoclonal antibody. Viral clones were plaque purified and further examined by restriction endonuclesase digestion and Southern blot hybridization. This gE deletion mutant will be evaluated as a vaccinal virus, in order to determine its potential use for a differential vaccine.Este artigo descreve a construção e caracterização de uma amostra de um herpesvírus bovino tipo 1.2a (BoHV-1.2a que apresenta uma deleção na região genômica que codifica a glicoproteína E (gE. A deleção gênica foi induzida através da co-transfecção de um fragmento de deleção, contendo as regiões 5´e 3´flanqueadoras da gE, com o DNA viral intacto de uma amostra viral isolada de um animal que apresentava doença respiratória. O isolamento do vírus gE negativo (gE- foi realizado com auxílio da técnica de imunoperoxidase em que foi utilizado como anticorpo primário um anticorpo monoclonal anti-gE. O vírus gE- foi purificado e o DNA isolado desta amostra foi examinado através das técnicas de análise por enzimas de restrição e "Southern blot". Esta amostra gE- será avaliada como candidata para compor uma vacina diferencial contra a rinotraqueíte infecciosa dos bovinos.

  10. Construction of First GSP Gasification Unit Was Kicked off at Shenhua Ningxia Coal Industry (Group)Co.,Ltd.in China

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ The construction of the core unit for the coal-based olefin project-the GSP gasification unit,the investment in which totals 20 billion RMB,has been kicked off at Shenhua Ningxia Coal Industry (Group) Co.,Ltd.,in Ningxia,China.It is told that this is the first gasification unit that adopts the GSP gasification technology in China.The GSP gasification unit adopts the Siemens technology,the basic design of which is implemented by the Uhde Engineering Company and the detailed design and procurement service of which will be performed by the No.2 Design Institute of Chemical Industry under the China National Chemical Engineering Group Corporation.

  11. Work-related musculoskeletal disorders among construction workers in the United States from 1992 to 2014.

    Science.gov (United States)

    Wang, Xuanwen; Dong, Xiuwen Sue; Choi, Sang D; Dement, John

    2017-05-01

    Examine trends and patterns of work-related musculoskeletal disorders (WMSDs) among construction workers in the USA, with an emphasis on older workers. WMSDs were identified from the 1992-2014 Survey of Occupational Injuries and Illnesses (SOII), and employment was estimated from the Current Population Survey (CPS). Risk of WMSDs was measured by number of WMSDs per 10 000 full-time equivalent workers and stratified by major demographic and employment subgroups. Time series analysis was performed to examine the trend of WMSDs in construction. The number of WMSDs significantly dropped in the US construction industry, following the overall injury trends. However, the rate of WMSDs in construction remained higher than in all industries combined; the median days away from work increased from 8 days in 1992 to 13 days in 2014, and the proportion of WMSDs for construction workers aged 55 to 64 years almost doubled. By occupation, construction labourers had the largest number of WMSD cases, while helpers, heating and air-conditioning mechanics, cement masons and sheet metal workers had the highest rates of WMSDs. The major cause of WMSDs in construction was overexertion, and back injuries accounted for more than 40% of WMSDs among construction workers. The estimated wage loss for private wage-and-salary construction workers was $46 million in 2014. Construction workers continue to face a higher risk of WMSDs. Ergonomic solutions that reduce overexertion-the primary exposure for WMSDs-should be adopted extensively at construction sites, particularly for workers with a higher risk of WMSDs. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  12. The heterobifunctional ligand 5-[4-(1,2,4-triazol-4-yl)phenyl]-1H-tetrazole and its role in the construction of a CdII metal-organic chain structure.

    Science.gov (United States)

    Lysenko, Andrey B

    2012-10-01

    5-[4-(1,2,4-Triazol-4-yl)phenyl]-1H-tetrazole, C(9)H(7)N(7), (I), an asymmetric heterobifunctional organic ligand containing triazole (tr) and tetrazole (tz) termini linked directly through a 1,4-phenylene spacer, crystallizes in the polar space group Pc. The heterocyclic functions, serving as single hydrogen-bond donor (tz) or acceptor (tr) units, afford hydrogen-bonded zigzag chains with no crystallographic centre of inversion. In the structure of catena-poly[[diaquacadmium(II)]bis{μ(2)-5-[4-(1,2,4-triazol-4-yl)phenyl]tetrazol-1-ido-κ(2)N(1):N(1')}], [Cd(C(9)H(6)N(7))(2)(H(2)O)(2)](n), (II), the Cd(II) dication resides on a centre of inversion in an octahedral {N(4)O(2)} environment. In the equatorial plane, the Cd(II) polyhedron is built up from four N atoms of two kinds, namely of trans-coordinating tr and tz fragments [Cd-N = 2.2926 (17) and 2.3603 (18) Å], and the coordinating aqua ligands occupy the two apical sites. The metal centres are separated at a distance of 11.1006 (7) Å by means of the double-bridging tetrazolate anion, L(-), forming a chain structure. The water ligands and tz fragments interact with one another, like a double hydrogen-bond donor-acceptor synthon, leading to a hydrogen-bonded three-dimensional array.

  13. Analysis of Main Steam Safety Valve Improvement for Qinshan Nuclear Power Plant Phase 2 Unit 1 & 2%秦山第二核电厂1 & 2号机组主蒸汽安全阀改进分析

    Institute of Scientific and Technical Information of China (English)

    任春明; 陈坚刚; 黄代顺

    2015-01-01

    秦山第二核电厂1&2号机组拟将其加能助动式主蒸汽安全阀改为弹簧加载式安全阀。通过比对秦山第二核电厂3&4号机组主蒸汽安全阀设计,提出了1&2号机组主蒸汽安全阀改进方案,即第1组阀门采用弹簧加载式并调整开启整定值,并从机械设计、仪控设计和安全分析等方面论证了该方案的可行性。新的改进方案在保证安全的前提下,简化了设计,大幅减少了工程投入,同时降低了系统和控制逻辑复杂化后带来的潜在停堆风险的增加。%An improvement for Qinshan Nuclear Power Plant Phase 2 unit 1&2 ,in which the power‐operated valves are replaced with the spring‐loaded valve with setpoint adjustment for the 1st group safety valves of steam generators ,would be adpoted on the basis of comparison with similar improvement implemented in Qinshan Nuclear Power Plant Phase 2 unit 3&4 .The feasibility was evaluated from several aspects ,including mechanical design ,instrument & control design and safety analysis .On the premise of guaranteeing safety ,this improvement can simplify design ,observably reduce project costs and avoid increasing the potential probability of the reactor trip risk induced by complication of the system and control logic .

  14. Occupational ergonomic issues in highway construction surveyed in Wisconsin, United States.

    Science.gov (United States)

    Choi, Sang D; Hudson, Lisa; Kangas, Peter; Jungen, Brett; Maple, Jennifer; Bowen, Chevon

    2007-06-01

    This study discusses the workplace ergonomic issues in highway construction, and the safe work practices associated with the prevention of ergonomic-related injuries and illnesses in the construction field. In order to achieve the study objectives, a survey was designed and sent to Wisconsin based construction contractors. To design an adequate questionnaire, the research team first conducted a pilot study. The findings from the pilot survey provided a clear direction in creating the final survey. The survey results indicated that hand and finger injuries due to cutting operations and back injuries due to the manual handling of heavy materials to be the most frequent construction task/injury combination. All of the construction firms surveyed had a safety program; however, most of the contractors did not have a site-specific ergonomics program. The construction workers were usually walking/working on the ground, ladder and scaffold, and spent significant amount of time for the manual lifting or carrying heavy materials. The findings from this study may assist safety and health professionals in the construction industry in making effective changes for improving health and productivity.

  15. Synthesis and Fungicidal Activities of Novel Quinazoline Derivatives Containing 1,2,4-Triazole Schiff-Base Unit%含1,2,4-三唑席夫碱的新型喹唑啉类化合物的合成及其抗菌活性研究

    Institute of Scientific and Technical Information of China (English)

    刘军虎; 刘勇; 蹇军友; 鲍小平

    2013-01-01

    Using 3-methyl-4-amino-1,2,4-triazole-5-thione,aromatic aldehydes and 4-chloroquinazoline as starting materials,fourteen novel quinazoline derivatives containing 1,2,4-triazole Schiff-base unit were synthesized. The structures of target compounds were fully characterized by IR,1H NMR,MS and elemental analysis. The preliminary bioassay showed that some compounds possessed certain fungicidal activities. At the concentration of 50 μg/mL,the inhibition rates of compound 6g against F. oxysporium,C. mandshurica and P. infestans were 71%,72% and 58%,respectively.%以3-甲基-4-氨基-1,2,4-三唑-5-硫酮、芳醛和4-氯喹唑啉为原料,经席夫碱和硫醚化反应合成了14个新型的含1,2,4-三唑席夫碱单元的喹唑啉类化合物6a~6n,通过IR,1H NMR,MS及元素分析对所合成的目标化合物进行了结构表征.初步生物活性测试结果表明,部分化合物表现出一定的抗菌活性.在50 μg/mL浓度下,化合物6g对辣椒枯萎菌、苹果腐烂菌及马铃薯晚疫菌的抑制率分别为71%,72%和58%.

  16. 2007 Effect of Changes in Layout Shape on Unit Construction Cost ...

    African Journals Online (AJOL)

    ezra

    and sizes of vertical components such as external walls and associated finishes, ... construction cost) obtained by dividing total project ... since non-right angled internal arrangements are .... corner columns (such as the square shape and.

  17. Economics of residential gas furnaces and water heaters in United States new construction market

    OpenAIRE

    Lekov, Alex B.

    2010-01-01

    New single-family home construction represents a significant and important market for the introduction of energy-efficient gas-fired space heating and water-heating equipment. In the new construction market, the choice of furnace and water-heater type is primarily driven by first cost considerations and the availability of power vent and condensing water heaters. Few analysis have been performed to assess the economic impacts of the different combinations of space and water-heating equipment....

  18. A 1.2 Gb/s Data Transmission Unit in CMOS 0.18 μm technology for the ALICE Inner Tracking System front-end ASIC

    Science.gov (United States)

    Mazza, G.; Aglieri Rinella, G.; Benotto, F.; Corrales Morales, Y.; Kugathasan, T.; Lattuca, A.; Lupi, M.; Ravasenga, I.

    2017-02-01

    The upgrade of the ALICE Inner Tracking System is based on a Monolithic Active Pixel Sensor and ASIC designed in a CMOS 0.18 μ m process. In order to provide the required output bandwidth (1.2 Gb/s for the inner layers and 400 Mb/s for the outer ones) on a single high speed serial link, a custom Data Transmission Unit (DTU) has been developed in the same process. The DTU includes a clock multiplier PLL, a double data rate serializer and a pseudo-LVDS driver with pre-emphasis and is designed to be SEU tolerant.

  19. Out of Many, One: European film-makers construct the United States

    Directory of Open Access Journals (Sweden)

    Dominique Sipière

    2010-11-01

    Full Text Available The Latin phrase e pluribus unum (out of many, one was the motto proposed by John Adams, Benjamin Franklin and Thomas Jefferson for the first Seal of the United States in 1776. It would later be included on most American currency and in the Seal of the President of the United States. Originally intended to suggest that out of the thirteen independent states declaring their independence from Britain would emerge a single country, it would later imply that the United States was attempting to ...

  20. Evolution of the constructive adobe system in the Porcelain Industrial Unit of Vista Alegre (1937-1945

    Directory of Open Access Journals (Sweden)

    Alice Ruano

    2010-01-01

    Full Text Available The urban nucleus of the Porcelain Factory of Vista Alegre reveals a special interest in terms of the evolution of the traditional adobe construction in the town of Ílhavo, located in the district of Aveiro. Presenting a structured philosophy of intervention in the territory since its very beginning, it possesses a rich heritage in the field of construction and architecture. The measures planned and implemented in the second phase of Vista Alegre growth reporting its beginning to the ends of the 30's, and along the 40's, confirm it both in the rehabilitation, extension and new constructions in adobe masonry. Those measures were implemented during the structural changes of the Industrial Unit administration that only until this period belonged to the family of its founder. These changes creates one of the focus of innovation in the region, with new construction strategies and solutions in adobe buildings, which will prolonged the period of use of this construction system, noticeable in buildings dated of 1958 in the Vista Alegre and at least in 1970 in the town.

  1. AUTOMOTIVE DIESEL MAINTENANCE 1. UNIT XXIX, REVIEWING THE CONSTRUCTION OF ENGINE COMPONENTS.

    Science.gov (United States)

    Human Engineering Inst., Cleveland, OH.

    THIS MODULE OF A 30-MODULE COURSE IS DESIGNED TO PROVIDE A REVIEW OF THE CONSTRUCTION AND OPERATION OF DIESEL ENGINE COMPONENTS. TOPICS ARE STATIONARY PARTS, ENGINE MOVING PARTS, PISTON RINGS, AND CONNECTING RODS AND PISTON PINS. THE MODULE CONSISTS OF AN INSTRUCTOR'S GUIDE, TRANSPARENCIES, A LIST OF SUGGESTED SUPPLEMENTARY MATERIALS, AND TRAINEE…

  2. Mixed-ligand coordination polymers from 1,2-bis(1,2,4-triazol-4-yl)ethane and benzene-1,3,5-tricarboxylate: trinuclear nickel or zinc secondary building units for three-dimensional networks with crystal-to-crystal transformation upon dehydration.

    Science.gov (United States)

    Habib, Hesham A; Sanchiz, Joaquin; Janiak, Christoph

    2008-04-07

    The hydrothermal reaction of M(NO3)2.6H2O (M = Ni and Zn) with benzene-1,3,5-tricarboxylic acid (H3btc) and 1,2-bis(1,2,4-triazol-4-yl)ethane (btre) produced the mixed-ligand coordination polymers (MOFs) 3 infinity{[Ni3(mu3-btc)2(mu(4)-btre)2(mu-H2O)2]. approximately 22H2O} (1) and 3 infinity{[Zn3(mu4-btc)2(mu4-btre)(H2O)2].2H2O} (3). The compounds, characterized by single-crystal X-ray diffraction, X-ray powder diffraction and thermoanalysis feature trinuclear secondary building units (SBU) within the three-dimensional frameworks. The trinuclear nickel unit in 1 exhibits an intra-trimer together with some weak inter-trimer antiferromagnetic coupling with J = -13.88(8) cm(-1) from the magnetic susceptibility measurement between 1.9-300 K. The zinc coordination polymer 3 shows a strong fluorescence at 423 nm upon excitation at 323 nm (not seen in the free btre ligand). Compound 3 is thermally robust until 200 degrees C (ambient pressure) where loss of the water molecules starts. Careful control of the dehydration procedure (freeze-drying) for 1 and (heating to 280 degrees C) for allowed for a solid-state reaction with single-crystal-to-single-crystal structural transformations in obtaining the largely dehydrated products 3 infinity{[Ni3(mu2-btc)2(mu4-btre)2(mu-H2O)2(H2O)2].4H2O} (2) and 3 infinity{[Zn3(mu6-btc)2(mu4-btre)2]. approximately 0.67H2O} (4), respectively. In the transformation from 1 to 2 the unit cell volume is reduced to about 60%. The transition from 3 to 4 involves breakage and formation of new Zn-O bonds.

  3. Analysis of Project Management for Construction Unit%建设方工程管理分析

    Institute of Scientific and Technical Information of China (English)

    杨音

    2013-01-01

      建设工程项目的全寿命周期包括决策阶段、实施阶段和使用或运营阶段,项目的顺利推进需要依赖建设方、设计方、施工方、供货方等多个参与方的共同配合,而建设方作为项目的总的管理者,其管理作用贯穿于建设工程项目的全寿命周期中,对整个项目的进展及质量起着至关重要的作用。  本文从建设方工程管理的主要工作内容出发,首先提出了工程项目的“投资管理、进度管理、质量管理”等三项管理重点,并详细分析了上述三项重点工作的体现阶段、管理权限、工作重点等方面的内容。其次,针对工程项目的分阶段实施特性,分别阐述了规划和项目管理阶段、工程实施管理阶段的重要性及主要工作内容,以及如何开展应急响应项目管理。最后分析了项目信息管理的必要性并提出信息管理系统的搭建方案。本文所提出的管理理念及工作方法已经部分应用于工作中并取得了良好的效果,因此具有一定的实际意义。%The life cycle of the construction project, including decision-making phase, implementation phase, and the use, or the operational phase. The smooth progress of the project depends on the co-ordination of the construction unit, the design unit, the construction unit, the supply unit, and other participants.As the general manager of the project, the construction unit plays a vital role in the progress and quality of the entire project, while its effect throughout the whole life cycle of the construction project. The thesis starts from the mainproject management work of construction unit,and then proposes the three management priorities which is "investment management, schedule management, quality management" with detailed analysis of their stage, administrative privileges and the focus of the work. Secondly, for projects phased implementation characteristics, it describes the

  4. Schooling and the Construction of Identity among Minority Students in Spain and the United States

    Science.gov (United States)

    Harry, Beth; Arnaiz, Pilar; Klingner, Janette; Sturges, Keith

    2008-01-01

    Based on a study of the special education placement process in a large city in the United States and two studies in different regions of Spain, the authors offer a comparative analysis of the relationship between professional beliefs and practices and the achievement of culturally and linguistically diverse (CLD) students. The data focus on…

  5. Design and Construction of a Positron Emission Tomography (PET) Unit and Medical Applications with GEANT Detector Simulation Package

    Energy Technology Data Exchange (ETDEWEB)

    Karagoz, Muge [Bogazici Univ., Istanbul (Turkey)

    1998-01-01

    In order to investigate the possibility of the construction of a sample PET coincidence unit in our HEP laboratory, a setup with two face to face PMTs and two 2x8 Csi(Tl) scintillator matrices has been constructed. In this setup, 1-D projections of a pointlike 22 Na positron source at different angles have been measured. Using these projections a 2-D image has been formed. Monte Carlo studies of this setup have been implemented using the detector simulation tool in CERN program library, GEANT. Again with GEANT a sample human body is created to study the effects of proton therapy. Utilization of the simulation as a pretherapy tool is also investigated.

  6. Branding Icarus: The Construction of Identity and Diversity at The United States Air Force Academy

    Science.gov (United States)

    2015-06-01

    reflective of the demography of society is a fundamental necessity in a Western liberal democracy. The paper uses sociological theory to posit that...blending quantitative and qualitative evidence, this project concludes that the US Air Force Academy constructs and cultivates exclusive identities that...identity was clear. The cultivation of the masculine as an identity norm in the military is not always so spectacularly exhibited. It is also

  7. Parenting and the workplace: The construction of parenting protections in United States law

    Directory of Open Access Journals (Sweden)

    Eichner Maxine

    2008-08-01

    Full Text Available Abstract In this paper, I discuss the shortcomings of the legal protections that exist for pregnancy, breastfeeding, and parenting for United States' workers. The two main sources of protection for pregnancy and parenting in United States employment law are the Pregnancy Discrimination Act (PDA and the Family and Medical Leave Act (FMLA. Both, I argue, contain inadequate protections for the needs of pregnant women and breastfeeding mothers, as well as their infants. I consider what it is about the way these statutes conceptualize the needs of pregnant women, mothers, and their babies, that prevents more robust protection of their needs. I then compare the minimal protection afforded American women and families with more progressive policies in other countries to highlight the possibilities that arise when the state affirmatively supports working parents and their children.

  8. Donor and Acceptor Unit Sequences Influence Material Performance in Benzo[1,2-b:4,5-b′]dithiophene-6,7-Difluoroquinoxaline Small Molecule Donors for BHJ Solar Cells

    KAUST Repository

    Wang, Kai

    2016-08-22

    Well-defined small molecule (SM) donors can be used as alternatives to π-conjugated polymers in bulk-heterojunction (BHJ) solar cells with fullerene acceptors (e.g., PC61/71BM). Taking advantage of their synthetic tunability, combinations of various donor and acceptor motifs can lead to a wide range of optical, electronic, and self-assembling properties that, in turn, may impact material performance in BHJ solar cells. In this report, it is shown that changing the sequence of donor and acceptor units along the π-extended backbone of benzo[1,2-b:4,5-b\\']dithiophene-6,7-difluoroquinoxaline SM donors critically impacts (i) molecular packing, (ii) propensity to order and preferential aggregate orientations in thin-films, and (iii) charge transport in BHJ solar cells. In these systems (SM1-3), it is found that 6,7-difluoroquinoxaline ([2F]Q) motifs directly appended to the central benzo[1,2-b:4,5-b\\']dithiophene (BDT) unit yield a lower-bandgap analogue (SM1) with favorable molecular packing and aggregation patterns in thin films, and optimized BHJ solar cell efficiencies of ≈6.6%. 1H-1H DQ-SQ NMR analyses indicate that SM1 and its counterpart with [2F]Q motifs substituted as end-group SM3 possess distinct self-assembly patterns, correlating with the significant charge transport and BHJ device efficiency differences observed for the two analogous SM donors (avg. 6.3% vs 2.0%, respectively). © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  9. ???????????? ?????? ?????????????????? ???????? 1,2,3-???????? ?? 1?-?????????, ????????? ????????? ??????????????? ??????

    OpenAIRE

    2008-01-01

    ?????????? ?????????? ??????????? ? ???????? ??????? ??????? ????? ???????? 1,2,3-???????? ?? ?????????, ??? ??????????? ?? ???????????? ??????? ??????????????? ??????. ????????? ???? ???????????? ??????? ??????????????? ????(???????)?????? ?? ??????????????? ??????. ?????????? ???????? ??????? ? ?????? ???????? ????? ?????? ???????????????? ???? ?? ?????? ?????????????. ??????????? ???? ???????? ??????? ??????????????? ????(???????)?????? ? ??????????????????? ??-????????? ?????? ?????? (R1C...

  10. Costochondral graft construction/reconstruction of the ramus/condyle unit: long-term follow-up.

    Science.gov (United States)

    Perrott, D H; Umeda, H; Kaban, L B

    1994-12-01

    This is a retrospective study of 26 patients (seven growing and 19 non-growing) who received costochondral grafts (n = 33) for construction or reconstruction of the ramus/condyle unit (RCU). Facial appearance, jaw motion, occlusion, contour, and linear growth changes were documented preoperatively, immediately postoperatively, and long-term (> 1 year). Average follow-up was 48.6 months for growing and 46.4 months for nongrowing patients. Facial asymmetry and malocclusion were successfully corrected in all patients except for those with hemifacial microsomia, where partial correction was most common. For the growing patients mean change in RCU length (n = 8) during the observation period was +3.1 mm on the constructed/reconstructed side and +3.2 mm on the unoperated side. For nongrowing patients, mean change in the RCU length (n = 25) was -5.7 mm for the reconstructed side. Three patients developed lateral contour overgrowth of the articulating surface; no patients developed clinically significant linear overgrowth with malocclusion. The results of this study indicate that a costochondral graft may be used successfully to construct/reconstruct the RCU and that linear overgrowth of the graft does not appear to be a clinical problem with the method described in this paper.

  11. Synthesis and characterization of two novel bimetallic macrocyclic complexes generated from 1,2,4-triazole-containing semi-rigid ligands and M(NO3)2 units (M = Ni and Zn).

    Science.gov (United States)

    Wu, Xiang Wen; Yin, Shi; Wu, Wan Fu; Ma, Jian Ping

    2016-04-01

    Bimetallic macrocyclic complexes have attracted the attention of chemists and various organic ligands have been used as molecular building blocks, but supramolecular complexes based on semi-rigid organic ligands containing 1,2,4-triazole have remained rare until recently. It is easier to obtain novel topologies by making use of asymmetric semi-rigid ligands in the self-assembly process than by making use of rigid ligands. A new semi-rigid ligand, 3-[(pyridin-4-ylmethyl)sulfanyl]-5-(quinolin-2-yl)-4H-1,2,4-triazol-4-amine (L), has been synthesized and used to generate two novel bimetallic macrocycle complexes, namely bis{μ-3-[(pyridin-4-ylmethyl)sulfanyl]-5-(quinolin-2-yl)-4H-1,2,4-triazol-4-amine}bis[(methanol-κO)(nitrato-κ(2)O,O')nickel(II)] dinitrate, [Ni2(NO3)2(C17H14N6S)2(CH3OH)2](NO3)2, (I), and bis{μ-3-[(pyridin-4-ylmethyl)sulfanyl]-5-(quinolin-2-yl)-4H-1,2,4-triazol-4-amine}bis[(methanol-κO)(nitrato-κ(2)O,O')zinc(II)] dinitrate, [Zn2(NO3)2(C17H14N6S)2(CH3OH)2](NO3)2, (II), by solution reactions with the inorganic salts M(NO3)2 (M = Ni and Zn, respectively) in mixed solvents. In (I), two Ni(II) cations with the same coordination environment are linked by L ligands through Ni-N bonds to form a bimetallic ring. Compound (I) is extended into a two-dimensional network in the crystallographic ac plane via N-H...O, O-H...N and O-H...O hydrogen bonds, and neighbouring two-dimensional planes are parallel and form a three-dimensional structure via π-π stacking. Compound (II) contains two bimetallic rings with the same coordination environment of the Zn(II) cations. The Zn(II) cations are bridged by L ligands through Zn-N bonds to form the bimetallic rings. One type of bimetallic ring constructs a one-dimensional nanotube via O-H...O and N-H...O hydrogen bonds along the crystallographic a direction, and the other constructs zero-dimensional molecular cages via O-H...O and N-H...O hydrogen bonds. They are interlinked into a two-dimensional network in the ac

  12. Downscaling humidity with Localized Constructed Analogs (LOCA) over the conterminous United States

    Science.gov (United States)

    Pierce, D. W.; Cayan, D. R.

    2016-07-01

    Humidity is important to climate impacts in hydrology, agriculture, ecology, energy demand, and human health and comfort. Nonetheless humidity is not available in some widely-used archives of statistically downscaled climate projections for the western U.S. In this work the Localized Constructed Analogs (LOCA) statistical downscaling method is used to downscale specific humidity to a 1°/16° grid over the conterminous U.S. and the results compared to observations. LOCA reproduces observed monthly climatological values with a mean error of ~0.5 % and RMS error of ~2 %. Extreme (1-day in 1- and 20-years) maximum values (relevant to human health and energy demand) are within ~5 % of observed, while extreme minimum values (relevant to agriculture and wildfire) are within ~15 %. The asymmetry between extreme maximum and minimum errors is largely due to residual errors in the bias correction of extreme minimum values. The temporal standard deviations of downscaled daily specific humidity values have a mean error of ~1 % and RMS error of ~3 %. LOCA increases spatial coherence in the final downscaled field by ~13 %, but the downscaled coherence depends on the spatial coherence in the data being downscaled, which is not addressed by bias correction. Temporal correlations between daily, monthly, and annual time series of the original and downscaled data typically yield values >0.98. LOCA captures the observed correlations between temperature and specific humidity even when the two are downscaled independently.

  13. Construction, evaluation and demonstration of mobile catalytic combustion units for destruction of methane and different odor pollutants

    Energy Technology Data Exchange (ETDEWEB)

    Jannasch, Anna-Karin [Catator AB, Lund (Sweden)

    2012-02-15

    This project reports on the construction, the evaluation and the demonstration of novel, mobile small-scale (< 100 Nm{sup 3}/h) combustion units for reduction of methane and/or different odour pollutants (e.g. hydrogen sulfide, ammonia, VOC) existing in small concentrations in process air streams. The evaluated units include a regenerative (MeshRegenOx/MRO) and a recuperative, catalytic unit (Deodoron), respectively, which both are based on Catator's proprietary wire mesh catalyst technology. The evaluation and the demonstration work have involved laboratory tests with synthetic gases and a number of field tests at plants for biogas production, water and waste treatment. The results show that: 1. In comparison to conventional thermal emission abatement systems, the wire mesh catalyst technology opens up for the construction of very compact (V=0.6 Nm, W=500 kg for 1000 Nm{sup 3}/h) and thermo-economical systems (> 95 %), which technology can easily be scaled up and integrated into existing industrial and/or process streams. 2. Catator's MRO-prototype enables for autothermal oxidation of methane, with a conversion degree of 97-98 %, from an inlet concentration of 0.2 vol% at an operation temperature of 660-700 deg, i.e. 200-300 deg less than when conventional homogenous flame combustion is applied. 3. The performance of the MRO-unit was seen to be somewhat unstable, with an oscillating conversion degree during the operation cycle. This should however be able to overcome by further optimizing the integrated catalyst package and the heat exchanger. Significant improvements in efficiency and stability are also to be expected by the scale-up due to a decreasing heat loss with an increasing capacity 4. Close to 100 % removal of different odorants, with a thermal efficiency of around 80 %, can be obtained by the use of Catator's unit Deodoron at an operation temperature of 300-400 deg. The results were verified by odor tests performed up- and downstream the

  14. Construction, evaluation and demonstration of mobile catalytic combustion units for destruction of methane and different odor pollutants

    Energy Technology Data Exchange (ETDEWEB)

    Jannasch, Anna-Karin [Catator AB, Lund (Sweden)

    2012-02-15

    This project reports on the construction, the evaluation and the demonstration of novel, mobile small-scale (< 100 Nm{sup 3}/h) combustion units for reduction of methane and/or different odour pollutants (e.g. hydrogen sulfide, ammonia, VOC) existing in small concentrations in process air streams. The evaluated units include a regenerative (MeshRegenOx/MRO) and a recuperative, catalytic unit (Deodoron), respectively, which both are based on Catator's proprietary wire mesh catalyst technology. The evaluation and the demonstration work have involved laboratory tests with synthetic gases and a number of field tests at plants for biogas production, water and waste treatment. The results show that: 1. In comparison to conventional thermal emission abatement systems, the wire mesh catalyst technology opens up for the construction of very compact (V=0.6 Nm, W=500 kg for 1000 Nm{sup 3}/h) and thermo-economical systems (> 95 %), which technology can easily be scaled up and integrated into existing industrial and/or process streams. 2. Catator's MRO-prototype enables for autothermal oxidation of methane, with a conversion degree of 97-98 %, from an inlet concentration of 0.2 vol% at an operation temperature of 660-700 deg, i.e. 200-300 deg less than when conventional homogenous flame combustion is applied. 3. The performance of the MRO-unit was seen to be somewhat unstable, with an oscillating conversion degree during the operation cycle. This should however be able to overcome by further optimizing the integrated catalyst package and the heat exchanger. Significant improvements in efficiency and stability are also to be expected by the scale-up due to a decreasing heat loss with an increasing capacity 4. Close to 100 % removal of different odorants, with a thermal efficiency of around 80 %, can be obtained by the use of Catator's unit Deodoron at an operation temperature of 300-400 deg. The results were verified by odor tests performed up- and downstream the

  15. Some assembly required: constructing the elementary units of store-operated Ca2+ entry.

    Science.gov (United States)

    Wu, Minnie M; Luik, Riina M; Lewis, Richard S

    2007-08-01

    The means by which Ca(2+) store depletion evokes the opening of store-operated Ca(2+) channels (SOCs) in the plasma membrane of excitable and non-excitable cells has been a longstanding mystery. Indirect evidence has supported local interactions between the ER and SOCs as well as long-range interactions mediated through a diffusible activator. The recent molecular identification of the ER Ca(2+) sensor (STIM1) and a subunit of the CRAC channel (Orai1), a prototypic SOC, has now made it possible to visualize directly the sequence of events that links store depletion to CRAC channel opening. Following store depletion, STIM1 moves from locations throughout the ER to accumulate in ER subregions positioned within 10-25nm of the plasma membrane. Simultaneously, Orai1 gathers at discrete sites in the plasma membrane directly opposite STIM1, resulting in local CRAC channel activation. These new studies define the elementary units of store-operated Ca(2+) entry, and reveal an unprecedented mechanism for channel activation in which the stimulus brings a channel and its activator/sensor together for interaction across apposed membrane compartments. We discuss the implications of this choreographic mechanism with regard to Ca(2+) dynamics, specificity of Ca(2+) signaling, and the existence of a specialized ER subset dedicated to the control of the CRAC channel.

  16. Construction of PREMUX and preliminary experimental results, as preparation for the HCPB breeder unit mock-up testing

    Energy Technology Data Exchange (ETDEWEB)

    Hernández, F., E-mail: francisco.hernandez@kit.edu [Karlsruhe Institute of Technology (KIT), Institute for Neutron Physics and Reactor Technology (INR) (Germany); Kolb, M. [Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM-WPT) (Germany); Annabattula, R. [Indian Institute of Technology Madras (IITM), Department of Mechanical Engineering (India); Weth, A. von der [Karlsruhe Institute of Technology (KIT), Institute for Neutron Physics and Reactor Technology (INR) (Germany)

    2014-10-15

    Highlights: • PREMUX has been constructed as preparation for a future out-of-pile thermo-mechanical qualification of a HCPB breeder unit mock-up. • The rationale and constructive details of PREMUX are reported in this paper. • PREMUX serves as a test rig for the new heater system developed for the HCPB-BU mock-up. • PREMUX will be used as benchmark for the thermal and thermo-mechanical models developed in ANSYS for the pebble beds of the HCPB-BU. • Preliminary results show the functionality of PREMUX and the good agreement of the measured temperatures with the thermal model developed in ANSYS. - Abstract: One of the European blanket designs for ITER is the Helium Cooled Pebble Bed (HCPB) blanket. The core of the HCPB-TBM consists of so-called breeder units (BUs), which encloses beryllium as neutron multiplier and lithium orthosilicate (Li{sub 4}SiO{sub 4}) as tritium breeder in form of pebble beds. After the design phase of the HCPB-BU, a non-nuclear thermal and thermo-mechanical qualification program for this device is running at the Karlsruhe Institute of Technology. Before the complex full scale BU testing, a pre-test mock-up experiment (PREMUX) has been constructed, which consists of a slice of the BU containing the Li{sub 4}SiO{sub 4} pebble bed. PREMUX is going to be operated under highly ITER-relevant conditions and has the following goals: (1) as a testing rig of new heater concept based on a matrix of wire heaters, (2) as benchmark for the existing finite element method (FEM) codes used for the thermo-mechanical assessment of the Li{sub 4}SiO{sub 4} pebble bed, and (3) in situ measurement of thermal conductivity of the Li{sub 4}SiO{sub 4} pebble bed during the tests. This paper describes the construction of PREMUX, its rationale and the experimental campaign planned with the device. Preliminary results testing the algorithm used for the temperature reconstruction of the pebble bed are reported and compared qualitatively with first analyses

  17. (infinity)(2)[Cu2(mu5-btb)(mu-OH)(mu-H2O)]: a two-dimensional coordination polymer built from ferromagnetically coupled Cu2 units (btb = benzene-1,2,3-tricarboxylate).

    Science.gov (United States)

    Habib, Hesham A; Sanchiz, Joaquin; Janiak, Christoph

    2008-09-28

    Hydrothermal reaction of Cu(NO3)(2).3H2O, Cd(OH)2 or Zn(OH)2 with benzene-1,2,3-tricarboxylic acid (H3btb, hemimellitic acid) produced the 2D coordination polymer (MOF) (infinity)(2)[Cu2(mu5-btb)(mu-OH)(mu-H2O)] (1) and the 2D hydrogen-bonded complexes [Cd(H2btb)2(H2O)4].2H2O (2) and [Zn(H2O)6](H2btb)(2).4H2O (3) which are characterized by single-crystal X-ray diffraction, X-ray powder diffraction and thermoanalysis. Magnetic susceptibility measurements between 1.9-300 K for 1 revealed three magnetic active exchange pathways that link the copper(II) ions through a long mu-aqua bridge, an anti-syn carboxylate bridge [j2 = 0.161(1) cm(-1)], and through a mixed mu-hydroxo + syn-syn carboxylate bridge [J = 83(1) cm(-1)]. At temperatures higher than 30 K the system behaves as isolated Cu2 units with strong ferromagnetic Cu-Cu coupling through the mu-hydroxo and syn-syn carboxylate bridge. The strong ferromagnetic coupling is explained with Hoffmann's approach by means of the concept of counter-complementarity introduced by Nishida et al.[Chem. Lett., 1983, 1815-1818].

  18. "Welfare queens" and "teen moms": how the social construction of fertile women impacts unintended pregnancy prevention policy in the United States.

    Science.gov (United States)

    James, E Angel; Rashid, Moira

    2013-01-01

    In the United States, unintended pregnancy is a serious health, social, and economic concern. However, the existing prevention policies have proven ineffective at decreasing the rate of unintended pregnancy at a national level. This lack of effective national prevention policy is better understood when viewed through the lens of a policy theory that incorporates an understanding of social construction and its effects on policy development. Through the application of one such policy theory, this article explores how the social construction of fertile women in the United States affects previous and recently enacted unintended pregnancy prevention policies.

  19. Corrective Action Investigation Plan for Corrective Action Unit 165: Areas 25 and 26 Dry Well and Washdown Areas, Nevada Test Site, Nevada (including Record of Technical Change Nos. 1, 2, and 3) (January 2002, Rev. 0)

    Energy Technology Data Exchange (ETDEWEB)

    U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office (NNSA/NV)

    2002-01-09

    This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office's approach to collect the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 165 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 165 consists of eight Corrective Action Sites (CASs): CAS 25-20-01, Lab Drain Dry Well; CAS 25-51-02, Dry Well; CAS 25-59-01, Septic System; CAS 26-59-01, Septic System; CAS 25-07-06, Train Decontamination Area; CAS 25-07-07, Vehicle Washdown; CAS 26-07-01, Vehicle Washdown Station; and CAS 25-47-01, Reservoir and French Drain. All eight CASs are located in the Nevada Test Site, Nevada. Six of these CASs are located in Area 25 facilities and two CASs are located in Area 26 facilities. The eight CASs at CAU 165 consist of dry wells, septic systems, decontamination pads, and a reservoir. The six CASs in Area 25 are associated with the Nuclear Rocket Development Station that operated from 1958 to 1973. The two CASs in Area 26 are associated with facilities constructed for Project Pluto, a series of nuclear reactor tests conducted between 1961 to 1964 to develop a nuclear-powered ramjet engine. Based on site history, the scope of this plan will be a two-phased approach to investigate the possible presence of hazardous and/or radioactive constituents at concentrations that could potentially pose a threat to human health and the environment. The Phase I analytical program for most CASs will include volatile organic compounds, semivolatile organic compounds, Resource Conservation and Recovery Act metals, total petroleum hydrocarbons, polychlorinated biphenyls, and radionuclides. If laboratory data obtained from the Phase I investigation indicates the presence of contaminants of concern, the process will continue with a Phase II investigation to define the extent of contamination. Based on the

  20. A strategy of constructing spherical core-shell structure of Li1.2Ni0.2Mn0.6O2@Li1.2Ni0.4Mn0.4O2 cathode material for high-performance lithium-ion batteries

    Science.gov (United States)

    Chong, Shaokun; Wu, Yifang; Chen, Yuanzhen; Shu, Chengyong; Liu, Yongning

    2017-07-01

    Serious decay of capacity and voltage for Li-rich layered cathode materials restrict their commercial application for Li-ion batteries. In this paper, a spherical core-shell structure, Li1.2Ni0.2Mn0.6O2@Li1.2Ni0.4Mn0.4O2 was in-situ prepared using hydrothermal method. SEM images as well as the analysis with XPS and EDS verified that the core-shell structure grows well. Electrochemical properties showed that the merits of the both materials have been preserved for high capacity of core material and high voltage as well as superior cycling stability of shell material. C/S-1/1 sample, whose mass proportion of core to shell is 1:1, exhibits the initial discharge capacity of 218 mAh·g-1 with the highest operating voltage of 3.763 V at 0.1C between 2.0 and 4.8 V, splendid cycling stability with the capacity retention of 93.1% and high voltage retention value of 3.335 V after 100 cycles. The improvement of electrochemical performances are attributed to the stable Li1.2Ni0.4Mn0.4O2 protective shell, which is beneficial to improve the electrochemical kinetics, mitigate the morphology evolution and retard the layered-spinel phase transition by restraining the release of O2 and weakening the electrode-electrolyte interfacial reaction.

  1. The Responsibilities and Obligations of Construction Units in the Safety Management of Constructional Engineering%建设单位在建筑工程安全管理中的责任与义务

    Institute of Scientific and Technical Information of China (English)

    史龙辉

    2013-01-01

    Safety production management of construction engineering is an important content of the project management for construction unit. Therefore, the construction unit should be clear about their responsibility and obligation in safety management, be clear about their management methods and management content, and shall establish perfect safety management system and code of conduct.%建筑工程安全生产管理是建设单位工程管理的重要内容.为此,建设单位应明确其在安全管理中应承担的安全责任与义务,应明确其管理方法和管理内容,并应建立完善的安全管理体系和行为规范.

  2. Design, construction, operation, and evaluation of a prototype culm-combustion boiler/heater unit. Quarterly technical progress report, October 1-December 31, 1980

    Energy Technology Data Exchange (ETDEWEB)

    1981-02-01

    This report provides a summary of the work performed on the Prototype Culm Combustion Boiler/Heater Unit, Phase I - Engineering Design and Analysis and Phase II - Prototype Plant Construction during the period October 1, 1980 through December 31, 1980. The objectives of the program as well as the technical progress and problem areas encountered during the reporting period are presented. The final detail design effort was completed and the final design report submitted. Progress on procurement activity authorized by full Phase II release on March 20, 1980, is discussed. Following approval by DOE, a purchase order was placed with the Norflor Construction Corporation for the prototype plant construction which began in November. Construction of the access roadway installation of the electric power, sewer and water lines was completed during this reporting period. Boiler construction continued.

  3. SparsePak: A Formatted Fiber Field Unit for The WIYN Telescope Bench Spectrograph. I. Design, Construction, and Calibration

    CERN Document Server

    Bershady, M A; Harker, J; Ramsey, L W; Verheijen, M A W

    2004-01-01

    We describe the design and construction of a formatted fiber field-unit, SparsePak, and characterize its optical and astrometric performance. This array is optimized for spectroscopy of low-surface brightness, extended sources in the visible and near-infrared. SparsePak contains 82, 4.7" fibers subtending an area of 72"x71" in the telescope focal plane, and feeds the WIYN Bench spectrograph. Together, these instruments are capable of achieving spectral resolutions of lambda/dlambda ~ 20000 and an area--solid-angle product of ~140 arcsec^2 m^2 per fiber. Laboratory measurements of SparsePak lead to several important conclusions on the design of fiber termination and cable curvature to minimize focal ratio degradation. SparsePak itself has throughput >80% redwards of 5200 A, and 90-92% in the red. Fed at f/6.3, the cable delivers an output 90% encircled energy at nearly f/5.2. This has implications for performance gains if the WIYN Bench Spectrograph had a faster collimator. Our approach to integral-field spect...

  4. Self-construction of magnetic hollow La0.7Sr0.3MnO3 microspheres with complex units.

    Science.gov (United States)

    Chu, Xuefeng; Huang, Keke; Han, Mei; Feng, Shouhua

    2013-04-15

    Perovskite structure La0.7Sr0.3MnO3 magnetic hollow microspheres with complex units were prepared via the hydrothermal route without hard and soft templates. The formation of hollow microspheres follows the self-construction mechanism involving oriented attachment, dissolution, and recrystallization processes. It exhibits a ferromagnetic behavior at room temperature.

  5. Construction and validation of a tool to Assess the Use of Light Technologies at Intensive Care Units.

    Science.gov (United States)

    Marinho, Pabliane Matias Lordelo; Campos, Maria Pontes de Aguiar; Rodrigues, Eliana Ofélia Llapa; Gois, Cristiane Franca Lisboa; Barreto, Ikaro Daniel de Carvalho

    2016-12-19

    to construct and validate a tool to assess the use of light technologies by the nursing team at Intensive Care Units. methodological study in which the tool was elaborated by means of the psychometric method for construction based on the categorization of health technologies by Merhy and Franco, from the National Humanization Policy, using the Nursing Intervention Classification taxonomy to categorize the domains of the tool. Agreement Percentages and Content Validity Indices were used for the purpose of validation. The result of the application of the Interrater Agreement Percentage exceeded the recommended level of 80%, highlighting the relevance for the proposed theme in the assessment, with an agreement rate of 99%. the tool was validated with four domains (Bond, Autonomy, Welcoming and Management) and nineteen items that assess the use of light technologies at Intensive Care Units. construir e validar um instrumento para avaliação do uso de tecnologias leves, pela equipe de enfermagem, em Unidades de Terapia Intensiva. estudo metodológico no qual o instrumento foi elaborado utilizando o método psicométrico para construção com base na categorização das tecnologias em saúde de Merhy e Franco, da Política Nacional de Humanização, utilizando-se a taxonomia Nursing Intervention Classification para categorizar os domínios do instrumento. Utilizou-se o Percentual de Concordância e o Índice de Validade de Conteúdo (IVC) para validação. o resultado da aplicação do Percentual de Concordância entre os juízes foi superior ao recomendado de 80%, havendo destaque na avaliação da pertinência ao tema proposto, apresentando um percentual de concordância de 99%. o instrumento foi validado com quatro domínios (Vínculo, Autonomia, Acolhimento e Gestão) e dezenove itens que avaliam o uso das tecnologias leves em Unidade de Terapia Intensiva. construir y validar un instrumento para evaluación del uso de tecnologías leves, por el equipo de enfermer

  6. Construct validity test of evaluation tool for professional behaviors of entry-level occupational therapy students in the United States

    Directory of Open Access Journals (Sweden)

    Hon K. Yuen

    2016-06-01

    Full Text Available Purpose: This study aimed to test the construct validity of an instrument to measure student professional behaviors in entry-level occupational therapy (OT students in the academic setting. Methods: A total of 718 students from 37 OT programs across the United States answered a self-assessment survey of professional behavior that we developed. The survey consisted of ranking 28 attributes, each on a 5-point Likert scale. A split-sample approach was used for exploratory and then confirmatory factor analysis. Results: A three-factor solution with nine items was extracted using exploratory factor analysis [EFA] (n=430, 60%. The factors were ‘Commitment to Learning’ (2 items, ‘Skills for Learning’ (4 items, and ‘Cultural Competence’ (3 items. Confirmatory factor analysis (CFA on the validation split (n=288, 40% indicated fair fit for this three-factor model (fit indices: CFI=0.96, RMSEA=0.06, and SRMR=0.05. Internal consistency reliability estimates of each factor and the instrument ranged from 0.63 to 0.79. Conclusion: Results of the CFA in a separate validation dataset provided robust measures of goodness-of-fit for the three-factor solution developed in the EFA, and indicated that the three-factor model fitted the data well enough. Therefore, we can conclude that this student professional behavior evaluation instrument is a structurally validated tool to measure professional behaviors reported by entry-level OT students. The internal consistency reliability of each individual factor and the whole instrument was considered to be adequate to good.

  7. Construction of paclitaxel-loaded poly (2-hydroxyethyl methacrylate-g-poly (lactide- 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine copolymer nanoparticle delivery system and evaluation of its anticancer activity

    Directory of Open Access Journals (Sweden)

    Liang XJ

    2012-03-01

    Full Text Available Xiaowei Ma*, Huan Wang*, Shubin Jin, Yan Wu, Xing-Jie LiangLaboratory of Nanomedicine and Nanosafety, Division of Nanomedicine and Nanobiology, National Center for Nanoscience and Technology, People’s Republic of China; and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Chinese Academy of Sciences, Beijing, People’s Republic of China *These authors contributed equally to this workBackground: There is an urgent need to develop drug-loaded biocompatible nanoscale packages with improved therapeutic efficacy for effective clinical treatment. To address this need, a novel poly (2-hydroxyethyl methacrylate-poly (lactide-1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine [PHEMA-g-(PLA-DPPE] copolymer was designed and synthesized to enable these nanoparticles to be pH responsive under pathological conditions.Methods: The structural properties and thermal stability of the copolymer was measured and confirmed by Fourier transform infrare d spectroscopy, nuclear magnetic resonance, and thermogravimetric analysis. In order to evaluate its feasibility as a drug carrier, paclitaxel-loaded PHEMA-g-(PLA-DPPE nanoparticles were prepared using the emulsion-solvent evaporation method.Results: The PHEMA-g-(PLA-DPPE nanoparticles could be efficiently loaded with paclitaxel and controlled to release the drug gradually and effectively. In vitro release experiments demonstrated that drug release was faster at pH 5.0 than at pH 7.4. The anticancer activity of the PHEMA-g-(PLA-DPPE nanoparticles was measured in breast cancer MCF-7 cells in vivo and in vitro. In comparison with the free drug, the paclitaxel-loaded PHEMA-g-(PLA-DPPE nanoparticles could induce more significant tumor regression.Conclusion: This study indicates that PHEMA-g-(PLA-DPPE nanoparticles are promising carriers for hydrophobic drugs. This system can passively target cancer tissue and release drugs in a controllable manner, as determined by the pH value of the area in

  8. 建设单位识别施工合同风险障碍的方法%Methods of Identification of Contract Risk Obstacles of Construction Unit

    Institute of Scientific and Technical Information of China (English)

    刘永行

    2014-01-01

    对施工合同风险定义、分类和识别风险的方法进行了分析,旨在提高建设单位合同管理能力,有效地降低风险损失,使建设资金得以有效使用。%This paper analyses the definition, classification and identification of construction contract risk, designed to improve the contract management ability of construction unit, effectively reduce the risk loss, and effectively use the onstruction funds.

  9. Construction of paclitaxel-loaded poly (2-hydroxyethyl methacrylate)-g-poly (lactide)-1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine copolymer nanoparticle delivery system and evaluation of its anticancer activity.

    Science.gov (United States)

    Ma, Xiaowei; Wang, Huan; Jin, Shubin; Wu, Yan; Liang, Xing-Jie

    2012-01-01

    There is an urgent need to develop drug-loaded biocompatible nanoscale packages with improved therapeutic efficacy for effective clinical treatment. To address this need, a novel poly (2-hydroxyethyl methacrylate)-poly (lactide)-1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine [PHEMA-g-(PLA-DPPE)] copolymer was designed and synthesized to enable these nanoparticles to be pH responsive under pathological conditions. The structural properties and thermal stability of the copolymer was measured and confirmed by Fourier transform infrared spectroscopy, nuclear magnetic resonance, and thermogravimetric analysis. In order to evaluate its feasibility as a drug carrier, paclitaxel-loaded PHEMA-g-(PLA-DPPE) nanoparticles were prepared using the emulsion-solvent evaporation method. The PHEMA-g-(PLA-DPPE) nanoparticles could be efficiently loaded with paclitaxel and controlled to release the drug gradually and effectively. In vitro release experiments demonstrated that drug release was faster at pH 5.0 than at pH 7.4. The anticancer activity of the PHEMA-g-(PLA-DPPE) nanoparticles was measured in breast cancer MCF-7 cells in vivo and in vitro. In comparison with the free drug, the paclitaxel-loaded PHEMA-g-(PLA-DPPE) nanoparticles could induce more significant tumor regression. This study indicates that PHEMA-g-(PLA-DPPE) nanoparticles are promising carriers for hydrophobic drugs. This system can passively target cancer tissue and release drugs in a controllable manner, as determined by the pH value of the area in which the drug accumulates.

  10. A point source of a different color: identifying a gap in United States regulatory policy for "green" cso treatment using constructed wetlands

    OpenAIRE

    Zeno F. Levy; Smardon, Richard C.; James S. Bays; Daniel Meyer

    2014-01-01

    Up to 850 billion gallons of untreated combined sewer overflow (CSO) is discharged into waters of the United States each year. Recent changes in CSO management policy support green infrastructure (GI) technologies as “front of the pipe” approaches to discharge mitigation by detention/reduction of urban stormwater runoff. Constructed wetlands for CSO treatment have been considered among suites of GI solutions. However, these wetlands differ fundamentally from other GI technologies ...

  11. Design and construction of coal/biomass to liquids (CBTL) process development unit (PDU) at the University of Kentucky Center for Applied Energy Research (CAER)

    Energy Technology Data Exchange (ETDEWEB)

    Placido, Andrew [Univ. of Kentucky, Lexington, KY (United States); Liu, Kunlei [Univ. of Kentucky, Lexington, KY (United States); Challman, Don [Univ. of Kentucky, Lexington, KY (United States); Andrews, Rodney [Univ. of Kentucky, Lexington, KY (United States); Jacques, David [Univ. of Kentucky, Lexington, KY (United States)

    2015-10-30

    This report describes a first phase of a project to design, construct and commission an integrated coal/biomass-to-liquids facility at a capacity of 1 bbl. /day at the University of Kentucky Center for Applied Energy Research (UK-CAER) – specifically for construction of the building and upstream process units for feed handling, gasification, and gas cleaning, conditioning and compression. The deliverables from the operation of this pilot plant [when fully equipped with the downstream process units] will be firstly the liquid FT products and finished fuels which are of interest to UK-CAER’s academic, government and industrial research partners. The facility will produce research quantities of FT liquids and finished fuels for subsequent Fuel Quality Testing, Performance and Acceptability. Moreover, the facility is expected to be employed for a range of research and investigations related to: Feed Preparation, Characteristics and Quality; Coal and Biomass Gasification; Gas Clean-up/ Conditioning; Gas Conversion by FT Synthesis; Product Work-up and Refining; Systems Analysis and Integration; and Scale-up and Demonstration. Environmental Considerations - particularly how to manage and reduce carbon dioxide emissions from CBTL facilities and from use of the fuels - will be a primary research objectives. Such a facility has required significant lead time for environmental review, architectural/building construction, and EPC services. UK, with DOE support, has advanced the facility in several important ways. These include: a formal EA/FONSI, and permits and approvals; construction of a building; selection of a range of technologies and vendors; and completion of the upstream process units. The results of this project are the FEED and detailed engineering studies, the alternate configurations and the as-built plant - its equipment and capabilities for future research and demonstration and its adaptability for re-purposing to meet other needs. These are described in

  12. Gifted and General High School Students' Perceptions of Learning and Motivational Constructs in Korea and the United States

    Science.gov (United States)

    Chae, Yoojung; Gentry, Marcia

    2011-01-01

    This study examined differences between Korean and US gifted and general students' perceptions constructs related to motivation and learning, using the Student Perceptions of Classroom Quality (SPOCQ) instrument. SPOCQ assesses students' perceptions of appeal, challenge, choice, meaningfulness, and academic self-efficacy. Measurement equality…

  13. Towards a Different Construction of Blackness: Black Immigrant Scholars on Racial Identity Development in the United States

    Science.gov (United States)

    Hernandez, Kathy-Ann C.; Murray-Johnson, Kayon K.

    2015-01-01

    In this collaborative autoethnography, two immigrants interrogate their evolving self-definitions as Black women in the U.S. academy. Using a variety of data sources, they uncover several commonalities and differences in their experiences which have coalesced into a four-part model in their journey towards a different construction of Black…

  14. Constructing a Counternarrative: Students Informing Now (S.I.N.) Reframes Immigration and Education in the United States

    Science.gov (United States)

    Dominguez, Neidi; Duarte, Yazmin; Espinosa, Pedro Joel; Martinez, Luis; Nygreen, Kysa; Perez, Renato; Ramirez, Izel; Saba, Mariella

    2009-01-01

    The work of Students Informing Now (S.I.N.), an immigrant student organization at the University of California, Santa Cruz, is described in this column. The authors argue that S.I.N.'s diverse activities and textual products construct a counternarrative that challenges and reframes the debate on undocumented students and immigration. Focusing on…

  15. A Comparative Study of Effectiveness of Peer Assessment of Individuals' Contributions to Group Projects in Undergraduate Construction Management Core Units

    Science.gov (United States)

    Jin, Xiao-Hua

    2012-01-01

    In recent years, various forms of group work have been introduced in university courses across various subject domains, including construction management courses. Although the use of group work in higher education has sound pedagogical reasons and advantages, group work has its own drawbacks. Therefore, the acceptance by students and the success…

  16. 数字化门诊建设中的精益管理%Lean Management during the Construction of Digital Outpatient Unit

    Institute of Scientific and Technical Information of China (English)

    杨骅; 王志勇; 陈珏; 魏民

    2012-01-01

    目的 在数字化门诊建设中引入精益管理理论和方法,为门诊患者和出诊医师提供人性化服务.方法 成立精益管理团队,运用精益工具评估存在问题,采取系列措施优化流程、完善服务.结果 达到了精益管理的预期效果.结论 流程改善是数字化门诊建设的先导,门诊管理者应全程参与数字化门诊建设过程,充分重视门诊信息数据的挖掘和分析.%Objective To introduce the theory and methods of lean management during the construction of digital outpatient clinical unit, to provide humanized service for patients and doctors. Method Setting up the lean management team. Then, using lean tools to assess existing problems, takeing a series of measures to optimize process and service. Results The expected effect of lean management has been achieved. Conclusion The process improvement is the most important part of the construction of digital outpatient service. The managers of outpatient clinical units should participate in the construction of digital outpatient service process, and pay fully attention to mining and analysis of outpatient information data.

  17. Linear units improve articulation between social and physical constructs: An example from caregiver parameterization for children supported by complex medical technologies

    Science.gov (United States)

    Bezruczko, N.; Stanley, T.; Battle, M.; Latty, C.

    2016-11-01

    Despite broad sweeping pronouncements by international research organizations that social sciences are being integrated into global research programs, little attention has been directed toward obstacles blocking productive collaborations. In particular, social sciences routinely implement nonlinear, ordinal measures, which fundamentally inhibit integration with overarching scientific paradigms. The widely promoted general linear model in contemporary social science methods is largely based on untransformed scores and ratings, which are neither objective nor linear. This issue has historically separated physical and social sciences, which this report now asserts is unnecessary. In this research, nonlinear, subjective caregiver ratings of confidence to care for children supported by complex, medical technologies were transformed to an objective scale defined by logits (N=70). Transparent linear units from this transformation provided foundational insights into measurement properties of a social- humanistic caregiving construct, which clarified physical and social caregiver implications. Parameterized items and ratings were also subjected to multivariate hierarchical analysis, then decomposed to demonstrate theoretical coherence (R2 >.50), which provided further support for convergence of mathematical parameterization, physical expectations, and a social-humanistic construct. These results present substantial support for improving integration of social sciences with contemporary scientific research programs by emphasizing construction of common variables with objective, linear units.

  18. Bringing Democracy to the Occupational Life of Educators in the United States: Constructing a Foundation for School-Based Reform.

    Science.gov (United States)

    Goodman, Jesse; Baron, Daniel; Myers, Carol

    2001-01-01

    Portrays authors' work as external change agents involved in numerous comprehensive, school-based reform efforts in the United States. Concerned with schools' micropolitics, focuses on efforts to develop democratic school cultures and on various issues (victimization, leadership, and authenticity) related to these schools' internal governance.…

  19. Phase I Transport Model of Corrective Action Units 101 and 102: Central and Western Pahute Mesa, Nevada Test Site, Nye County, Nevada with Errata Sheet 1, 2, 3, Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Greg Ruskauff

    2009-02-01

    As prescribed in the Pahute Mesa Corrective Action Investigation Plan (CAIP) (DOE/NV, 1999) and Appendix VI of the Federal Facility Agreement and Consent Order (FFACO) (1996, as amended February 2008), the ultimate goal of transport analysis is to develop stochastic predictions of a contaminant boundary at a specified level of uncertainty. However, because of the significant uncertainty of the model results, the primary goal of this report was modified through mutual agreement between the DOE and the State of Nevada to assess the primary model components that contribute to this uncertainty and to postpone defining the contaminant boundary until additional model refinement is completed. Therefore, the role of this analysis has been to understand the behavior of radionuclide migration in the Pahute Mesa (PM) Corrective Action Unit (CAU) model and to define, both qualitatively and quantitatively, the sensitivity of such behavior to (flow) model conceptualization and (flow and transport) parameterization.

  20. Discussion on Risk Game and Cooperation between Construction Units and Construction Enterprises under BT Mode%论BT模式下甲乙双方的风险博弈与合作

    Institute of Scientific and Technical Information of China (English)

    叶元伟

    2011-01-01

    The construction projects under BT mode involve construction units and construction enterprises,whose benefits and attitudes to risk are game and cooperation.Taking specific project as an example,the measures of risk control before bid and treatments of risk control when contracting parties face varies of difficulty in implement process are stated.It is suggested that the parties should respect science,consult on an equal footing and cooperate when encountering risks%采用BT模式的建设项目涉及建设单位和施工企业2个主体,这2个主体的利益既相互对立又相互统一,他们对待风险的态度也是既博弈又合作。以具体项目为案例,阐述建设单位标前风险控制的手段和方法,以及在实施过程中合同双方正确应对各种风险的控制措施,建议合同双方在遇到风险时应尊重科学,平等协商,相互合作。

  1. Design, construction, operation and evaluation of a prototype culm combustion boiler/heater unit. Technical progress report, October 1-December 31, 1979

    Energy Technology Data Exchange (ETDEWEB)

    1980-02-01

    This report provides a summary of the work performed on the Prototype Culm Combustion Boiler/Heater Unit, Phase I - Engineering Design and Analysis and Limited Phase II - Prototype Plant Construction during the period October 1, 1979 through December 31, 1979. The objectives of the program as well as the technical progress and problem areas encountered are presented. Progress on the components and system engineering studies is described. The Preliminary Design of Prototype Unit Topical Report was submitted. Final design activity is continuing and the progress on drawing preparation and advanced procurement activity is discussed. Based on authorization for a limited amount of Phase II activity, initial Purchase Orders were released authorizing preparation of certified drawings for fabricated equipment required to support the Phase I final design activity. The Purchase Order for site clearance and installation of boiler foundations was awarded and ground breaking ceremonies were held at the Prototype Culm Combustion Boiler site in Paxinos, Pennsylvania, on December 7, 1979.

  2. Corrective Action Investigation Plan for Corrective Action Unit 97: Yucca Flat/Climax Mine, Nevada National Security Site, Nevada with ROTCs 1, 2, and 3 (Revision 0, September 2000)

    Energy Technology Data Exchange (ETDEWEB)

    Andrews, Robert; Marutzky, Sam

    2000-09-01

    This Corrective Action Investigation Plan contains the U.S. Department of Energy, Nevada Operations Office's (DOE/NV's) approach to collect the data necessary to evaluate Corrective Action Alternatives (CAAs) appropriate for the closure of Corrective Action Unit (CAU) 97 under the Federal Facility Agreement and Consent Order (FFACO). Corrective Action Unit 97, collectively known as the Yucca Flat/Climax Mine CAU, consists of 720 Corrective Action Sites (CASs). The Yucca Flat/Climax Mine CAU extends over several areas of the NTS and constitutes one of several areas used for underground nuclear testing in the past. The nuclear tests resulted in groundwater contamination in the vicinity as well as downgradient of the underground test areas. Based on site history, the Yucca Flat underground nuclear tests were conducted in alluvial, volcanic, and carbonate rocks; whereas, the Climax Mine tests were conducted in an igneous intrusion located in northern Yucca Flat. Particle-tracking simulations performed during the regional evaluation indicate that the local Climax Mine groundwater flow system merges into the much larger Yucca Flat groundwater flow systems during the 1,000-year time period of interest. Addressing these two areas jointly and simultaneously investigating them as a combined CAU has been determined the best way to proceed with corrective action investigation (CAI) activities. The purpose and scope of the CAI includes characterization activities and model development conducted in five major sequential steps designed to be consistent with FFACO Underground Test Area Project's strategy to predict the location of the contaminant boundary, develop and implement a corrective action, and close each CAU. The results of this field investigation will support a defensible evaluation of CAAs in the subsequent corrective action decision document.

  3. Corrective Action Investigation Plan for Corrective Action Unit 527: Horn Silver Mine, Nevada Test Site, Nevada: Revision 1 (Including Records of Technical Change No.1, 2, 3, and 4)

    Energy Technology Data Exchange (ETDEWEB)

    U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office

    2002-12-06

    This Corrective Action Investigation Plan contains the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Operations Office's approach to collect the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 527, Horn Silver Mine, Nevada Test Site, Nevada, under the Federal Facility Agreement and Consent Order. Corrective Action Unit 527 consists of one Corrective Action Site (CAS): 26-20-01, Contaminated Waste Dump No.1. The site is located in an abandoned mine site in Area 26 (which is the most arid part of the NTS) approximately 65 miles northwest of Las Vegas. Historical documents may refer to this site as CAU 168, CWD-1, the Wingfield mine (or shaft), and the Wahmonie mine (or shaft). Historical documentation indicates that between 1959 and the 1970s, nonliquid classified material and unclassified waste was placed in the Horn Silver Mine's shaft. Some of the waste is known to be radioactive. Documentation indicates that the waste is present from 150 feet to the bottom of the mine (500 ft below ground surface). This CAU is being investigated because hazardous constituents migrating from materials and/or wastes disposed of in the Horn Silver Mine may pose a threat to human health and the environment as well as to assess the potential impacts associated with any potential releases from the waste. The results of this field investigation will support a defensible evaluation of corrective action alternatives in the corrective action decision document.

  4. Value engineering the construction of long tunnels in the dolomites of northern Illinois, United States of America

    Energy Technology Data Exchange (ETDEWEB)

    Laughton, Christopher; /Fermilab

    2000-01-01

    Fermi National Accelerator Laboratory (Fermilab), a high-energy physics laboratory operated by the Universities Research Association for the US Department of Energy, is developing plans for the construction of accelerator tunnels. The accelerator designs vary as a function of particles accelerated, technologies used and energies targeted. However, all accelerators require the excavation of long tunnels, up to 700 km in length, and tunnel costs represent a major portion of project budgets. This paper documents the findings of two studies undertaken to identify tunnel cost-drivers and outlines steps taken to initiate the ''value engineering'' of the tunnels.

  5. Differences in dopamine receptor reserve for N-n-propylnorapomorphine enantiomers: single unit recording studies after partial inactivation of receptors by N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline.

    Science.gov (United States)

    Cox, R F; Waszczak, B L

    1989-01-01

    Previous studies with (S)-(+)-N-n-propylnorapomorphine (NPA), an enantiomer of the potent dopaminergic agonist (R)-(-)-NPA, showed that this compound had a complex pharmacological profile. For example, (S)-(+)NPA had weak dopaminergic agonist potency, in that it could slow and ultimately stop firing of substantia nigra and ventral tegmental area dopamine neurons. However, antagonist properties were also evident inasmuch as immediate pretreatment with a low dose of (S)-(+)-NPA caused a significant rightward shift of the (R)-(-)-NPA dose-response curve. This dual agonist-antagonist nature of (S)-(+)-NPA suggested a low intrinsic efficacy for (S)-(+)-NPA. To test this hypothesis, we conducted dose-response studies for the inhibition of rat substantia nigra dopamine cell firing by (R)-(-)- and (S)-(+)-NPA 1 day after partial irreversible dopamine receptor inactivation with 6 mg/kg N-ethoxycarbonyl-2-ethoxy-1-2-dihydroquinoline (EEDQ) in an ethanol vehicle. This degree of inactivation resulted in a significant, parallel, rightward shift of the (R)-(-)-NPA dose-response curve relative to ethanol-treated control rats, with no loss of maximal response. After pretreatment with the same dose of EEDQ, however, the maximal response to (S)-(+)-NPA was reduced by 22% with no shift on the dose axis. The dose-response curves for control and EEDQ-treated groups were subjected to Furchgott analysis to determine per cent response versus fractional occupancy relationships for each drug. A steep hyperbolic relationship was revealed for (R)-(-)-NPA. Fifty per cent and maximal (greater than 95%) inhibitions of cell firing occurred at 3.5% and approximately 32% receptor occupancies, respectively. Hence, for (R)-(-)-NPA there is about a 68% receptor reserve in this model. The same analysis for (S)-(+)-NPA yielded an occupancy versus response plot that was more shallow and linear. Half-maximal effects occurred at 66% occupancy and the maximal response (96% inhibition) required 94% occupancy

  6. A Comparison between the American Institute of Architects’ and the United States Navy’s Construction Contract General Provisions

    Science.gov (United States)

    1992-01-01

    SCOTT A. HAYWARD CT MARO0 119935 A REPORT PRESENTED TO THE GRADUATE COMMITTEE OF THE DEPARTMENT OF CIVIL ENGINEERING IN PARTIAL FULFILLMENT OF THE...an officer of the Civil Engineer Corps, United States Navy or another officer or representative of the Government, as Resident Officer in Charge of...Awlo 9 ay dfll it C nt bcor mahflP" U _ L3.7.. 7A.3.3. nooposa Arhiec Owe Arhiec Contrato ACbntratioor relo..nc cnt Oed~e prepared NOrnobl4 Becme

  7. Football et unité nationale : entre construction politique et signification sociale (1965–2010

    Directory of Open Access Journals (Sweden)

    Nassir Abdoun

    2016-01-01

    Full Text Available Au Cameroun, pays d'Afrique centrale qui compte plus de 200 langues nationales et entités ethniques, le football s'est imposé tant dans le discours politique que dans la praxis sociale comme un instrument de l'unité nationale. Sport le plus important au regard du palmarès et de l'engouement populaire, le football est un reflet pertinent de la dynamique historique qui s'opère dans ce pays. A l'image des clubs mythiques à base ethno-centrée qui ont animé la scène sportive du continent dans les décennies des années 60 et 70, la société semble s'attacher au marquage identitaire propre à ces associations sportives. C'est avec l'émergence du label « Lions indomptables » que nous assistons à un véritable mixage à l'échelle nationale. Dans une approche dynamique, il s'agit de déterminer les fondements de cette unité rendue opérationnelle par le football. L'approche est éminemment pluridisciplinaire en usant de l'histoire, de la science politique et de la sociologie.

  8. Social problem construction and national context: news reporting on "overweight" and "obesity" in the United States and France.

    Science.gov (United States)

    Saguy, Abigail C; Gruys, Kjerstin; Gong, Shanna

    2010-01-01

    Drawing on analyses of American and French news reports on "overweight" and "obesity," this article examines how national context—including position in a global field of nation states, as well as different national politics and culture—shapes the framing of social problems. As has been shown in previous research, news reports from France—the economically dominated but culturally dominant nation of the two—discuss the United States more often than vice versa, typically in a negative way. Our contribution is to highlight the flexibility of anti-American rhetoric, which provides powerful ammunition for a variety of social problem frames. Specifically, depending on elite interests, French news reports may invoke anti-American rhetoric to reject a given phenomenon as a veritable public problem, or they may use such rhetoric to drum up concern over an issue. We further show how diverse cultural factors shape news reporting. Despite earlier work showing that a group-based discrimination frame is more common in the United States than in France, we find that the U.S. news sample is no more likely to discuss weight-based discrimination than the French news sample. We attribute this to specific barriers to this particular framing, namely the widespread view that body size is a behavior, akin to smoking, rather than an ascribed characteristic, like race. This discussion points, more generally, to some of the mechanisms limiting the diffusion of frames across social problems.

  9. Coke Oven Gas Based Methanol Production Capacity Reached 1.2 Mt/a in China

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ Coke oven gas is one of the main byproducts of coke chemicals industry.One ton of coke formed can generate 430 m3of coke oven gas.Adoption of appropriate chemical processing method can convert methane contained in the coke oven gas into CO that can be further converted into methanol.It is learned that currently China has constructed and commissioned ten projects for manufacture of methanol fromcoke oven gas with the total production capacity reaching 1.2 Mt/a methanol.More than twenty coke gas-to-methanol units are under construction or in the stage of project design with their overall production capacity reaching nearly 3.0 Mt/a methanol.Relevant experts have indicated that the enterprises provided with coke production lines are capable of constructing coke gas-to-methanol projects to realize coproduction of coke and methanol while utilizing their own coke gas resources.

  10. Assessment of an alternative housing reconstruction policy after the 1995 Grevena-Kozani (N.Greece) earthquake: Construction of standardized units in private lots

    Science.gov (United States)

    Mousteraki, K.; Dandoulaki, M.; Symeonidis, S.

    2009-04-01

    In Greece, the reconstruction of earthquake damaged building stock is technically and financially supported by the state. Housing reconstruction typically comprises three subsequent phases that is emergency shelter, temporary housing and permanent housing in buildings after their reconstruction. The latter is based on financial support by the state to the owner for the repair or reconstruction of each individual building. A different approach was tried after the 1995 Kozani-Grevena (N.Greece) earthquake. The earthquake (M=6.6) affected mainly the countryside of the two prefectures and devastated a great number of small settlements with aged and decreasing population. The experience from the 1986 Kalamata earthquake had demonstrated that low income and elderly households had difficulties in using reconstruction loans and tented to remain longer in temporary housing. In an attempt to take in the Kalamata experience and the development features of the disaster area, certain categories of homeless households were offered the choice to select either the typical financial and technical support to reconstruct their damaged house under their own responsibility or a small standard house (50 to 60m2) constructed by the state in their lot. About 4,000 housing units were constructed in villages all over the disaster area. The paper focuses on this new housing policy. It presents the institutional framework, the procedures for the selection of eligible households, the geography of the constructed housing units, issues of project management and involved costs. It also attempts to highlight strong and weak points of the new approach and to make some comparisons with the long-established approach to recovery of damaged building stock. The overall conclusion is that despite huge complexities in project management and higher costs, this new policy contributed in retaining the population and enhancing development in the area.

  11. C1-2 arthrography

    Energy Technology Data Exchange (ETDEWEB)

    Chevrot, A. [Service de Radiologie B, Hopital Cochin, 75 - Paris (France); Cermakova, E. [Service de Radiologie B, Hopital Cochin, 75 - Paris (France); Vallee, C. [Service de Radiologie B, Hopital Cochin, 75 - Paris (France); Chancelier, M.D. [Service de Radiologie B, Hopital Cochin, 75 - Paris (France); Chemla, N. [Service de Radiologie B, Hopital Cochin, 75 - Paris (France); Rousselin, B. [Service de Radiologie B, Hopital Cochin, 75 - Paris (France); Langer-Cherbit, A. [Service de Radiologie B, Hopital Cochin, 75 - Paris (France)

    1995-08-01

    One hundred patients with the following conditions were studied: cervical pain or neuralgia without radiographic changes, osteoarthritis, rheumatoid arthritis, ankylosing spondylarthritis and diverse conditions. The technique consists of lateral puncture of the posterior aspect of the C1-2 joint with a 20-gauge needle under fluoroscopic control, arthrography using 1 ml contrast medium, and a 1-ml long-acting steroid injection subsequently. The articular cavity has an anterior and a posterior recess. Sometimes the posterior recess is large. In 18% of cases the contralateral joint also opacifies. C1-2 arthrography appears to be an efficient and safe technique for the treatment of upper cervical pain due to C1-2 articular disorders. (orig.)

  12. Information behaviour of parents of children admitted to a neonatal intensive care unit: Constructing a conceptual framework.

    Science.gov (United States)

    De Rouck, Sofie; Leys, Mark

    2011-01-01

    This article explores the concepts 'information behaviour' and 'illness trajectory' at the neonatal intensive care unit (NICU). On the basis of literature review and exploratory interviews with neonatologists and head nurses of Belgian NICUs a conceptual framework is presented. The 'information behaviour' of parents of infants admitted to a NICU is analytically divided into five dimensions: ways of getting information; interpersonal information sources; time-related issues; location of information transfer; and content of information. The conceptual framework equally takes the 'illness trajectory' into account. Following Corbin and Strauss the illness trajectory at a NICU is analysed in three sub-trajectories: disease course; healthcare trajectory; and sickness trajectory. By combining the respective categories of information behaviour and illness trajectory, an analytical tool is presented under the form of a classification matrix for scrutinizing the mediating role of the illness trajectory on the information behaviour of parents of infants admitted to a NICU.

  13. An Assessment of Water Demand and Availability to meet Construction and Operational Needs for Large Utility-Scale Solar Projects in the Southwestern United States

    Science.gov (United States)

    Klise, G. T.; Tidwell, V. C.; Macknick, J.; Reno, M. D.; Moreland, B. D.; Zemlick, K. M.

    2013-12-01

    In the Southwestern United States, there are many large utility-scale solar photovoltaic (PV) and concentrating solar power (CSP) facilities currently in operation, with even more under construction and planned for future development. These are locations with high solar insolation and access to large metropolitan areas and existing grid infrastructure. The Bureau of Land Management, under a reasonably foreseeable development scenario, projects a total of almost 32 GW of installed utility-scale solar project capacity in the Southwest by 2030. To determine the potential impacts to water resources and the potential limitations water resources may have on development, we utilized methods outlined by the Bureau of Land Management (BLM) to determine potential water use in designated solar energy zones (SEZs) for construction and operations & maintenance (O&M), which is then evaluated according to water availability in six Southwestern states. Our results indicate that PV facilities overall use less water, however water for construction is high compared to lifetime operational water needs. There is a transition underway from wet cooled to dry cooled CSP facilities and larger PV facilities due to water use concerns, though some water is still necessary for construction, operations, and maintenance. Overall, ten watersheds, 9 in California, and one in New Mexico were identified as being of particular concern because of limited water availability. Understanding the location of potentially available water sources can help the solar industry determine locations that minimize impacts to existing water resources, and help understand potential costs when utilizing non-potable water sources or purchasing existing appropriated water. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract

  14. RHM 1(2).indb

    African Journals Online (AJOL)

    mike

    Research in Hospitality Management 2012, 1(2): 85–95. Printed in South ... This paper imagines what a hotel might look like in 2050 based upon nine drivers of ..... of a quarry, will be run by geothermal energy, use sustainable materials and ...

  15. A New One-dimensional Chain Compound Constructed by {Mo8O28} units via Corner-sharing

    Institute of Scientific and Technical Information of China (English)

    余雅琴; 杨文斌; 吴传德; 卢灿忠

    2005-01-01

    The title compound, {(H3O)4(NH4)4[Mo8O28]·2H2O}n 1, has been synthesized rature, and its crystal structure was determined by X-ray single-crystal analysis with the following crystallographic data: monoclinic system, space group P21/n, a = 9.5234(6), b = 11.3235(8), c = 14.8812(10) (A), β = 107.467(2)°, V= 1530.77(18) (A)3, Z= 4, F(000) = 1336,μ = 3.293 mm-1 and Dc= 3.037 g/cm3. The final R = 0.0619 for 2691 observed reflections (I > 2σ(I)). X-ray crys tal structure analysis showed that the novel one-dimensional chain compound is built up by basic { Mo8O28 } units via singleμ2-O, and such chains are further linked into a three-dimensional net work by hydrogen bonds.

  16. Construction safety

    CERN Document Server

    Li, Rita Yi Man

    2013-01-01

    A close-to-ideal blend of suburb and city, speedy construction of towers of Babylon, the sparkling proportion of glass and steel buildings’ facade at night showcase the wisdom of humans. They also witness the footsteps, sweats and tears of architects and engineers. Unfortunately, these signatures of human civilizations are swathed in towering figures of construction accidents. Fretting about these on sites, different countries adopt different measures on sites. This book firstly sketches the construction accidents on sites, followed by a review on safety measures in some of the developing countries such as Bermuda, Egypt, Kuwait and China; as well as developed countries, for example, the United States, France and Singapore. It also highlights the enormous compensation costs with the courts’ experiences in the United Kingdom and Hong Kong.

  17. Design, construction, operation and evaluation of a Prototype Culm Combustion Boiler/Heater Unit. Quarterly technical progress report, October 1-December 31, 1979

    Energy Technology Data Exchange (ETDEWEB)

    1980-02-01

    This report provides a summary of the work performed on the Prototype Culm Combustion Boiler/Heater Unit, Phase I - Engineering Design and Analysis and Limited Phase II - Prototype Plant Construction during the period October 1, 1979 through December 31, 1979. The objectives of the program as well as the technical progress and problem areas encountered during the reporting period are presented. Progress on the components and system engineering studies is described. The Preliminary Design of Prototype Unit Topical Report was submitted during this reporting period. Final design activity is continuing and the progress on drawing preparation and advanced procurement activity is discussed. Based on authorization for a limited amount of Phase II activity, initial purchase orders were released authorizing preparation of certified drawings for fabricated equipment required to support the Phase I final design activity. The Purchase Order for site clearance and installation of boiler foundations was awarded during this reporting period and ground breaking ceremonies were held at the Prototype Culm Combustion Boiler site in Paxinos, Pennsylvania on December 7, 1979.

  18. 关于组建航空军事运输装卸保障分队的思考%Reflections on Construction of Loading and Unloading Support Unit for Military Airlift Transportation

    Institute of Scientific and Technical Information of China (English)

    罗雷; 李鹏; 常刚

    2012-01-01

    Based on the scrupulous analysis of the necessity of the construction of loading and unloading support unit for military airlift transportion, the construction principles of loading and unloading support unit for military airlift transportion are presented, the basic idea of construction of loading and unloading support unit for military airlift transportion are definit- ed.%在认真分析组建航空军事运输装卸保障分队必要性的基础上,提出了我军航空军事运输装卸保障分队的建设原则,明确了航空军事运输装卸保障分队建设的基本思路。

  19. SU(1,2) invariance in two-dimensional oscillator

    CERN Document Server

    Krivonos, Sergey

    2016-01-01

    Performing the Hamiltonian analysis we explicitly established the canonical equivalence of the deformed oscillator, constructed in arXiv:1607.03756[hep-th], with the ordinary one. As an immediate consequence, we proved that the SU(1,2) symmetry is the dynamical symmetry of the ordinary two-dimensional oscillator. The characteristic feature of this SU(1,2) symmetry is a non-polynomial structure of its generators written it terms of the oscillator variables.

  20. Discussion on Site Visa Management for Construction Units%关于建设单位做好现场签证管理的探讨

    Institute of Scientific and Technical Information of China (English)

    陈铁生

    2014-01-01

    做好现场签证是建设单位施工现场管理的重点和难点,是保证工程质量,降低工程造价,保证工程进度正常进行的重要管理环节。做好现场签证是个系统工程,应全面做好工程设计阶段、工程招标阶段、工程施工阶段、工程审计的审核、沟通、确认工作,做好现场签证的规范管理。以“做好审批流程管理、明确责任”为签证管理依据,以“合同为依据、以现场为事实”为签证管理原则,重点做好申报手续规范性、准确性、全面性审核,合理性审核,可行性审核,严格做好现场签证的及时性、时效性、有效性管理,签证项目检查验收等五个现场签证管理环节的管控,保证现场签证工作质量。%Site visa is the emphasis and difficulty for construction units in construction site. It is a key management process. Site visa can ensure engineering quality, reduce project cost, and ensure project progress smoothly. Site visa is a systematic project, we should conduct the audit, communication, and confirmation work comprehensively during engineering design, tender and construction phase, achieve the standard management of site visa work. With "completes the approval process management, clear accountability" for the visa management regulations, based on the management principles of "based on contract, based on the site". Focus on management and control of five site visa links to ensure quality of site visa work, including standardization, accuracy, comprehensive review of declaration formalities, reasonable review, feasibility audit, do better timely and effective management of site visa, check and acceptance of visa project, etc.

  1. A Point Source of a Different Color: Identifying a Gap in United States Regulatory Policy for “Green” CSO Treatment Using Constructed Wetlands

    Directory of Open Access Journals (Sweden)

    Zeno F. Levy

    2014-04-01

    Full Text Available Up to 850 billion gallons of untreated combined sewer overflow (CSO is discharged into waters of the United States each year. Recent changes in CSO management policy support green infrastructure (GI technologies as “front of the pipe” approaches to discharge mitigation by detention/reduction of urban stormwater runoff. Constructed wetlands for CSO treatment have been considered among suites of GI solutions. However, these wetlands differ fundamentally from other GI technologies in that they are “end of the pipe” treatment systems that discharge from a point source, and are therefore regulated in the U.S. under the National Pollution Discharge Elimination System (NPDES. We use a comparative regulatory analysis to examine the U.S. policy framework for CSO treatment wetlands. We find in all cases that permitting authorities have used best professional judgment to determine effluent limits and compliance monitoring requirements, referencing technology and water quality-based standards originally developed for traditional “grey” treatment systems. A qualitative comparison with Europe shows less stringent regulatory requirements, perhaps due to institutionalized design parameters. We recommend that permitting authorities develop technical guidance documents for evaluation of “green” CSO treatment systems that account for their unique operational concerns and benefits with respect to sustainable development.

  2. Design, construction, operation, and evaluation of a prototype culm combustion boiler/heater unit. Quarterly technical progress report, October 1-December 21, 1981

    Energy Technology Data Exchange (ETDEWEB)

    1982-01-01

    This report provides a summary of the work performed on the Prototype Culm Combustion Boiler/Heater Unit, Phase I - Engineering Design and Analysis, Phase II - Prototype Plant Construction and Phase III - Start-Up and Operation during the period October 1, 1981 through December 31, 1981. The objectives of the program as well as the technical progress and problem areas encountered during the reporting period are presented. Seven shakedown tests were run. Start-up and shakedown testing was completed. Four parametric tests were run. Performance data are presented with the exception of boiler efficiency which will be reported once chemical analyses are completed. Total boiler operation time through the end of this quarter - 1225 h, 50 min; operating time on culm and culm/limestone - 682 h, 43 min. Inspection revealed no problems with boiler tube wear. Sulfur capture greater than 94% was demonstrated (design is 88%). A turndown of better than 4 to 1 was shown (design is 2.5 to 1). Computer control of most of the loops has been successful and manual control was also demonstrated.

  3. Narrative constructions of sexual violence as told by female rape survivors in three populations of the southwestern United States: scripts of coercion, scripts of consent.

    Science.gov (United States)

    Bletzer, Keith V; Koss, Mary P

    2004-01-01

    There is a growing literature on the narrative construction of rape as sexual violence. This is puzzling, since, in certain contexts, violence may stifle narrative production. Researchers of atrocities, for example, propose that the experience of recurring terror disrupts narrative cohesion in reporting lived trauma. Genocidal horror occurs in the context of communities and ethnic groups. Our rape survival data from women of three populations in the southwestern United States reflect traumas of sexual violence against women, experienced within everyday lives. From interviews with 62 female rape survivors, we (1) identify narrative conventions and linguistic devices to show how these women structure accounts of sexual assault that reflect their cultural background; (2) contrast scripts of coercion and consent; (3) examine how the way in which these women describe the coercive actions of the perpetrator(s) contradicts the assumptions of legal discourse; and (4) discuss the narrative production of several women in abusive relationships and compare it to the narrative production (or lack thereof) of persons who experience state-engineered terror.

  4. 1-[2-(4-Methyl-7-coumarinyloxyethyl]-4-(5-{1-[2-(4-methyl-7-coumarinyloxyethyl]-1H-1,2,3-triazol-4-yl}pentyl-1H-1,2,3-triazole

    Directory of Open Access Journals (Sweden)

    Fernando Cidade Torres

    2016-04-01

    Full Text Available Nature often produces compounds with a high degree of symmetry to reduce structural information and complexity. Synthesis of identical twin drugs, through the linkage of two identical pharmacophoric entities, is a classical strategy to produce more potent and/or selective drugs. Herein, two units of the privileged core of the coumarin hymecromone were linked together using “click chemistry”. Synthesis of 1-[2-(4-Methyl-7-coumarinyloxyethyl]-4-(5-{1-[2-(4-methyl-7-coumarinyloxyethyl]-1H-1,2,3-triazol-4-yl}pentyl-1H-1,2,3-triazole was achieved by coupling of two identical units of an azido coumarin with a symmetrical alkine using copper(I-catalyzed alkyne-azide cycloaddition reaction, in good yields and with complete regioselectivity.

  5. 15 CFR 1.2 - Description and design.

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 1 2010-01-01 2010-01-01 false Description and design. 1.2 Section 1... COMMERCE § 1.2 Description and design. (a) The Act of February 14, 1903 (32 Stat. 825, as amended) (15 U.S... the words: Department of Commerce United States of America (b) The design of the approved seal is as...

  6. 1,2-Bis(2-methoxy-6-formylphenoxyethane

    Directory of Open Access Journals (Sweden)

    Hongqi Li

    2011-02-01

    Full Text Available In the title compound [systematic name: 3,3′-dimethoxy-2,2′-(ethane-1,2-diyldioxydibenzaldehyde], C18H18O6, prepared from 1,2-dibromoethane and ortho-vanillin in the presence of sodium carbonate, the two vanillin units are linked via a CH2–CH2 bridge. The two benzene rings are inclined at a dihedral angle of 41.6 (5°.

  7. ITER: Promises unkept ? (1/2)

    CERN Document Server

    CERN. Geneva

    2008-01-01

    Fusion power as the source of energy on Earth has been the dream of mankind ever since the principles were understood. ITER, the Latin word for “the way”, is the world’s largest Fusion device presently under construction in Cadarache, France. Supported by the People’s Republic of China, the European Atomic Energy Community, India, Japan, the Republic of Korea, the Russian Federation, and the United States of America, an international organization was founded after the signature of the Joint ITER Agreement in October of 2006. The goal is to build a Fusion reactor with a power amplification of 10, a total fusion power of 500 MW or more operating at extended burn times of 400-3000 seconds, with Deuterium and Tritium as its basic fuel. Following a short introduction into fusion science principles, the history of thermo nuclear fusion will be covered. Finally more recent construction projects around the world, their latest achievements and the path to ITER will be described. Technological and scientific c...

  8. Site investigation SFR. Rock type coding, overview geological mapping and identification of rock units and possible deformation zones in drill cores from the construction of SFR

    Energy Technology Data Exchange (ETDEWEB)

    Petersson, Jesper (Vattenfall Power Consultant AB, Stockholm (Sweden)); Curtis, Philip; Bockgaard, Niclas (Golder Associates AB (Sweden)); Mattsson, Haakan (GeoVista AB, Luleaa (Sweden))

    2011-01-15

    This report presents the rock type coding, overview lithological mapping and identification of rock units and possible deformation zones in drill cores from 32 boreholes associated with the construction of SFR. This work can be seen as complementary to single-hole interpretations of other older SFR boreholes earlier reported in /Petersson and Andersson 2010/: KFR04, KFR08, KFR09, KFR13, KFR35, KFR36, KFR54, KFR55, KFR7A, KFR7B and KFR7C. Due to deficiencies in the available material, the necessary activities have deviated somewhat from the established methodologies used during the recent Forsmark site investigations for the final repository for spent nuclear fuel. The aim of the current work has been, wherever possible, to allow the incorporation of all relevant material from older boreholes in the ongoing SFR geological modelling work in spite of the deficiencies. The activities include: - Rock type coding of the original geological mapping according to the nomenclature used during the preceding Forsmark site investigation. As part of the Forsmark site investigation such rock type coding has already been performed on most of the old SFR boreholes if the original geological mapping results were available. This earlier work has been complemented by rock type coding on two further boreholes: KFR01 and KFR02. - Lithological overview mapping, including documentation of (1) rock types, (2) ductile and brittle-ductile deformation and (3) alteration for drill cores from eleven of the boreholes for which no original geological borehole mapping was available (KFR31, KFR32, KFR34, KFR37,KFR38, KFR51, KFR69, KFR70, KFR71, KFR72 and KFR89). - Identification of possible deformation zones and merging of similar rock types into rock units. This follows SKB's established criteria and methodology of the geological Single-hole interpretation (SHI) process wherever possible. Deviations from the standard SHI process are associated with the lack of data, for example BIPS images

  9. 36 CFR 1.2 - Applicability and scope.

    Science.gov (United States)

    2010-07-01

    ... to the jurisdiction of the United States located within the boundaries of the National Park System... Section 1.2 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR GENERAL... administered by the National Park Service; (2) The boundaries of lands and waters administered by the...

  10. Biochemical activities of 1,2-dichloroethane (DCA) degrading bacteria

    African Journals Online (AJOL)

    African Journal of Biotechnology ... One of the most widely produced industrial solvents is 1,2-dichloroethane (DCA), a known ... Annual production in the United States, Japan and Europe alone are in excess of ... isolated from South African waste water treatment facilities, were found to belong to the genus Ancylobacter.

  11. Teacher Autonomy in the United States: Establishing a Standard Definition, Validation of a Nationally Representative Construct and an Investigation of Policy Affected Teacher Groups

    Science.gov (United States)

    Gwaltney, Kevin Dale

    2012-01-01

    This effort: 1) establishes an autonomy definition uniquely tailored for teaching, 2) validates a nationally generalizable teacher autonomy construct, 3) demonstrates that the model describes and explains the autonomy levels of particular teacher groups, and 4) verifies the construct can represent teacher autonomy in other empirical models. The…

  12. Teacher Autonomy in the United States: Establishing a Standard Definition, Validation of a Nationally Representative Construct and an Investigation of Policy Affected Teacher Groups

    Science.gov (United States)

    Gwaltney, Kevin Dale

    2012-01-01

    This effort: 1) establishes an autonomy definition uniquely tailored for teaching, 2) validates a nationally generalizable teacher autonomy construct, 3) demonstrates that the model describes and explains the autonomy levels of particular teacher groups, and 4) verifies the construct can represent teacher autonomy in other empirical models. The…

  13. 43 CFR 2812.1-2 - Contents.

    Science.gov (United States)

    2006-10-01

    ... 43 Public Lands: Interior 2 2006-10-01 2006-10-01 false Contents. 2812.1-2 Section 2812.1-2 Public Lands: Interior Regulations Relating to Public Lands (Continued) BUREAU OF LAND MANAGEMENT, DEPARTMENT... Bay Revested Lands § 2812.1-2 Contents. (a) An individual applicant and each member of any...

  14. An Unsymmetrical Tetrathiafulvalene with a Fused 1,2,5-Thiadiazole Ring and Methylthio Groups

    Directory of Open Access Journals (Sweden)

    Yoshiro Yamashita

    2009-10-01

    Full Text Available The title compound, 5-(4,5-dimethylthio-1,3-dithiol-2-ylidene-1,3-diaza-2,4,6-trithiapentalene (4,5-dimethylthio [1,2,5]thiadiazolotetrathiafulvalene, molecular formula C8H6N2S7 crystallizes in the P21/n space group with one molecule in the asymmetric unit. The molecular framework is planar within 0.19 Å. The molecules form a head-to-tail type of π-stacking dimer with an interplanar distance is 3.50(1 Å, where methylthio groups face away from each other. The molecules are also linked by weak intermolecular S···S heteroatom interactions [3.497(1 and 3.572(1 Å] to construct a unique one-dimensional molecular tape structure.

  15. Predictable grammatical constructions

    DEFF Research Database (Denmark)

    Lucas, Sandra

    2015-01-01

    My aim in this paper is to provide evidence from diachronic linguistics for the view that some predictable units are entrenched in grammar and consequently in human cognition, in a way that makes them functionally and structurally equal to nonpredictable grammatical units, suggesting...... that these predictable units should be considered grammatical constructions on a par with the nonpredictable constructions. Frequency has usually been seen as the only possible argument speaking in favor of viewing some formally and semantically fully predictable units as grammatical constructions. However, this paper...... semantically and formally predictable. Despite this difference, [méllo INF], like the other future periphrases, seems to be highly entrenched in the cognition (and grammar) of Early Medieval Greek language users, and consequently a grammatical construction. The syntactic evidence speaking in favor of [méllo...

  16. Construction Minerals Operations

    Data.gov (United States)

    Department of Homeland Security — This map layer includes construction minerals operations in the United States. The data represent commodities covered by the Minerals Information Team (MIT) of the...

  17. The influence analysis of cooling medium and condensation node construction for refrigeration units specifications for the oil and gas offshore supply bases

    Science.gov (United States)

    Yusha, V. L.; Raikovski, N. A.; Fot, A. N.

    2017-08-01

    Due to constant toughening of requirements to technical and economic indicators of transport refrigeration units, the condensers cooling method influence of the refrigerating machines on their characteristics is considered. Refrigeration units of marine vessels are operated in a wide temperature range of the cooling air and water. To assess the degree and scope of a water and air cooling in this temperature range, as well as the use of natural circulation schemes of refrigeration units, numerical analysis was carried out by known methods of calculation. The results of the calculation determined the most appropriate application spheres of one or the other refrigeration unit scheme, and also the need for additional research in the condensation node combined cooling sphere was identified, because such a scheme is able to combine the water cooling, air cooling and refrigeration unit cycle with natural refrigerant circulation advantages.

  18. Wheeler-Feynman dynamics of spin-1/2 particles

    Energy Technology Data Exchange (ETDEWEB)

    Van Alstine, P.; Crater, H.W.

    1986-02-15

    By combining a supersymmetric description of a spinning particle in an external field with an appropriate modification of the ''adjunct field'' of Wheeler and Feynman, we construct a many-time relativistic dynamics for arbitrary numbers of spin-(1/2) and spinless particles in mutual scalar or vector interaction. Quantization of the slow-motion approximation to the dynamics of two spinning particles reproduces the corresponding field-theoretic (Bethe-Salpeter) dynamics through order U.

  19. Wheeler-Feynman dynamics of spin-1/2 particles

    Science.gov (United States)

    van Alstine, Peter; Crater, Horace W.

    1986-02-01

    By combining a supersymmetric description of a spinning particle in an external field with an appropriate modification of the ``adjunct field'' of Wheeler and Feynman, we construct a many-time relativistic dynamics for arbitrary numbers of spin-(1/2) and spinless particles in mutual scalar or vector interaction. Quantization of the slow-motion approximation to the dynamics of two spinning particles reproduces the corresponding field-theoretic (Bethe-Salpeter) dynamics through order α4.

  20. Spin-1/2 Maxwell Fields

    CERN Document Server

    Armour, R S

    2003-01-01

    Requiring covariance of Maxwell's equations without {\\it a priori} imposing charge invariance allows for both spin-1 and spin-1/2 transformations of the complete Maxwell field and current. The spin-1/2 case yields new transformation rules, with new invariants, for all traditional Maxwell field and source quantities. The accompanying spin-1/2 representations of the Lorentz group employ the Lorentz metric, and consequently the primary invariants of the spin-1/2 Maxwell field are also spin-1 invariants, for example, $\\Phi^2 - {\\bf A}^2$, ${\\bf E}^2 - {\\bf B}^2 + 2i {\\bf E} \\bm{\\cdot} {\\bf B} - ({\\partial}_{0}{\\Phi} + {\\bm{\

  1. Construction of sub-unit dengue vaccines and analysis of its immunogenicity%登革病毒重组亚单位疫苗的构建及免疫原性分析

    Institute of Scientific and Technical Information of China (English)

    张志珊; 严延生; 翁育伟

    2010-01-01

    Objective To construct sub-unit vaccines of dengue virus type 1 to 4 and to analyze its immunogenicity. Methods Envelope domain Ⅲ s of dengue serotypes 1 and 2, as well as 3 and 4, were spliced by a linker (Gly-Gly-Ser-Gly-Ser) 3 and cloned into vector pET-30a, then transformed into E. coli to express recombinant fusion proteins. The recombinant proteins were purified by high-performance liquid chromatography and mixed to immunize BALB/c mice. The neutralizing antibodies were tested by neutralizing assay, as well as in newborn mice challenged intracranially with dengue virus type 1 to 4.combination with sera from mice immunized with recombinant proteins were protected, whereas 83% protection was obtained when challenged with DEN-3 or 4. Conclusion The recombinant proteins possess excellent immunogenicity to induce neutralizing antibodies and would be valuable for development of a tetravalent sub-unit vaccine.%目的 构建登革病毒1~4型重组亚单位疫苗,分析重组疫苗的免疫原性.方法 利用连接肽将登革病毒1型与2型,3型与4型的外膜蛋白DⅢ基因片段连接在一起,克隆人原核表达载体pET-30a,在大肠埃希菌中表达DEN1/2型、DEN3/4型融合重组蛋白.重组蛋白经高效液相色谱柱分离纯化后,混和免疫小鼠,采用中和实验法测定血清中和抗体效价,同时进行乳鼠体内中和实验,观察中和抗体对乳鼠的免疫保护作用.结果 重组蛋白能诱导小鼠产生针对登革病毒1~4型的中和抗体,平均中和效价分别为1:34.9、1:45.3、1:24.7和1:38.4.中和抗体能保护新生乳鼠免受致死剂量DEN1~4的攻击,保护率分别为100%,100%,83%,83%.结论 构建的重组亚单位疫苗具有良好的免疫原性,能诱导小鼠产生中和抗体,为构建单一四价疫苗提供了实验室依据.

  2. sl(1|2) Super-Toda Fields

    Institute of Scientific and Technical Information of China (English)

    YANG Zhan-Ying; XUE Pan-Pan; ZHAO Liu; SHI Kang-Jie

    2008-01-01

    Explicit exact solution of supersymmetric Toda fields associated with the Lie superalgebra sr(2|1) is con-structed. The approach used is a super extension of Leznov-Saveliev algebraic analysis, which is based on a pair of chiral and antichiral Drienfeld-Sokolov systems. Though such approach is well understood for Toda field theories associated with ordinary Lie algebras, its super analogue was only successful in the super Liouville case with the underlying Lie superalgebra osp(1|2). The problem lies in that a key step in the construction makes use of the tensor product decom-position of the highest weight representations of the underlying Lie superalgebra, which is not clear until recently. So our construction made in this paper presents a first explicit example of Leznov-Saveliev analysis for super Toda systems associated with underlying Lie superalgebras of the rank higher than 1.

  3. Becoming “Beautiful” … Becoming “American”? A Study on Constructions of Beauty and Identity Among Korean and Filipina Women in the United States

    OpenAIRE

    Oh, Hyeyoung

    2008-01-01

    How do Korean and Filipina women engage in beauty and bodywork, to reconcile issues of ethnicity, identity, and beauty within American society? The minority status of Asians in the United States results in the adoption of basic Anglo-Saxon beauty ideals by Korean and Filipina women. Divergent assimilation experiences in the United States however create different pathways for these women to engage in beauty and bodywork. I analyze interviews conducted in 2005, with 9 Korean and 11 Filipina wo...

  4. Analysis of Common Problems in the Construction Unit Construction Budget Management%对施工单位建筑预算管理常见问题的分析

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

      建筑工程预算就是用货币形式来展现建筑工程的价值,使工程预算编制质量得到提高。这对于做好基本投资管理和建设计划、提高投资效益、降低工程造价、推行招标承包和投资包干制等具有重大的意义。%The architectural engineering budget is to show the construction of the value of the currency, making the quality of engineering budget increase. This is of great significance to do the basic investment management and construction plan, impr-oving the benefit of investment, reducing the project cost, bid-ding contract and investment contract.

  5. Synthesis of a Chain Aluminophosphate Containing Racemic 1, 2-Diaminopropane

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    A one-dimensional chain aluminophosphate C1.5H7.5N1.5Al0.5PO4 containing diprotonated racemic 1, 2-diaminopropane cations was synthesized from an alcoholic system. The compound consists of infinite inorganic [AlP2O8] chains of alternately connected AlO4 and PO2(=O)2 tetrahedral units and the racemic template molecules. The macroanionic chains contain corner-shared double four-membered rings.

  6. Dielectric relaxation in 0-3 PVDF-Ba(Fe1/2Nb1/2)O3 composites

    Science.gov (United States)

    Chandra, K. P.; Singh, Rajan; Kulkarni, A. R.; Prasad, K.

    2016-05-01

    (1-x)PVDF-xBa(Fe1/2Nb1/2)O3 ceramic-polymer composites with x = 0.025, 0.05, 0.10, 0.15 were prepared using melt-mixing technique. The crystal symmetry, space group and unit cell dimensions were determined from the XRD data of Ba(Fe1/2Nb1/2)O3 using FullProf software, whereas crystallite size and lattice strain were estimated using Williamson-Hall approach. The distribution of Ba(Fe1/2Nb1/2)O3 particles in the PVDF matrix were examined on the cryo-fractured surfaces using a scanning electron microscope. Cole-Cole and pseudo Cole-Cole analysis suggested the dielectric relaxation in this system to be of non-Debye type. Filler concentration dependent real and imaginary parts of dielectric constant as well as ac conductivity data followed definite trends of exponential growth types of variation.

  7. The WZNW model on PSU(1,1|2)

    CERN Document Server

    Götz, G; Schomerus, V; Gotz, Gerhard; Quella, Thomas; Schomerus, Volker

    2007-01-01

    According to the work of Berkovits, Vafa and Witten (hep-th/9902098), the non-linear sigma model on the supergroup PSU(1,1|2) is the essential building block for string theory on AdS(3)xS(3)xT(4). Models associated with a non-vanishing value of the RR flux can be obtained through a psu(1,1|2) invariant marginal deformation of the WZNW model on PSU(1,1|2). We take this as a motivation to present a manifestly psu(1,1|2) covariant construction of the model at the Wess-Zumino point, corresponding to a purely NSNS background 3-form flux. At this point the model possesses an enhanced psu(1,1|2) current algebra symmetry whose representation theory, including explicit character formulas, is developed systematically in the first part of the paper. The space of vertex operators and a free fermion representation for their correlation functions is our main subject in the second part. Contrary to a widespread claim, bosonic and fermionic fields are necessarily coupled to each other. The interaction changes the supersymmet...

  8. 建设工程综合工日人工单价的合理性探讨%The Rationality of the Artificial Unit Price in Comprehensive Man-Days in the Construction Project

    Institute of Scientific and Technical Information of China (English)

    杨智慧; 王文华

    2014-01-01

    Guangdong province construction engineering quota of labor cost accounts for the proportion of the total cost for 15 ~20%, profit margins of 18%of the labor .In recent years , with the construction labor costs continue to rise , artificial cost account-ing for the proportion of the total cost is rising .Based on the quota of labor cost and labor comprehensive unit price , artificial con-sumption quota and the actual consumption quota , construction project quota of labor will be analyzed by three aspects , thus, it is concluded that the current comprehensive man-days released artificial unit price reasonable conclusion .%广东省建筑工程定额人工费占总造价的比例为15%~20%,利润率为人工费的18%。近几年随着建设工程人工成本不断上涨,人工费占总造价的比例也在不断上升。该文从定额人工费与劳务综合单价、定额人工消耗量与实际人工消耗量和建设工程定额人工费的组成3个方面进行分析论证,从而得出现行公布的综合工日人工单价具有合理性的结论。

  9. Selective laser melting: a unit cell approach for the manufacture of porous, titanium, bone in-growth constructs, suitable for orthopedic applications. II. Randomized structures.

    Science.gov (United States)

    Mullen, Lewis; Stamp, Robin C; Fox, Peter; Jones, Eric; Ngo, Chau; Sutcliffe, Christopher J

    2010-01-01

    In this study, the unit cell approach, which has previously been demonstrated as a method of manufacturing porous components suitable for use as orthopedic implants, has been further developed to include randomized structures. These random structures may aid the bone in-growth process because of their similarity in appearance to trabecular bone and are shown to carry legacy properties that can be related back to the original unit cell on which they are ultimately based. In addition to this, it has been shown that randomization improves the mechanical properties of regular unit cell structures, resulting in anticipated improvements to both implant functionality and longevity. The study also evaluates the effect that a post process sinter cycle has on the components, outlines the improved mechanical properties that are attainable, and also the changes in both the macro and microstructure that occur.

  10. Parenting for Cognitive Development from 1950 to 2000: The Institutionalization of Mass Education and the Social Construction of Parenting in the United States

    Science.gov (United States)

    Schaub, Maryellen

    2010-01-01

    Over the second half of the twentieth century, changes occurred in parent reports of their engagement in cognitive activities with their young children in the United States. This article argues that the growing trend of "parenting for cognitive development" in young children in the latter half of the twentieth century is associated with the…

  11. Parenting for Cognitive Development from 1950 to 2000: The Institutionalization of Mass Education and the Social Construction of Parenting in the United States

    Science.gov (United States)

    Schaub, Maryellen

    2010-01-01

    Over the second half of the twentieth century, changes occurred in parent reports of their engagement in cognitive activities with their young children in the United States. This article argues that the growing trend of "parenting for cognitive development" in young children in the latter half of the twentieth century is associated with the…

  12. AC conductivity and relaxation mechanism in (Nd1/2Li1/2)(Fe1/2V1/2)O3 ceramics

    Science.gov (United States)

    Nath, Susmita; Barik, Subrat Kumar; Choudhary, R. N. P.

    2016-05-01

    In the present study we have synthesized polycrystalline sample of (Nd1/2Li1/2)(Fe1/2V1/2)O3 ceramic by a standard high-temperature solid-state reaction technique. Studies of dielectric and electrical properties of the compound have been carried out in a wide range of temperature (RT - 400 °C) and frequency (1kHz - 1MHz) using complex impedance spectroscopic technique. The imaginary vs. real component of the complex impedance plot (Nyquist plot) of the prepared sample exhibits the existence of grain, grain boundary contributions in the complex electrical parameters and negative temperature coefficient of resistance (NTCR) type behavior like semiconductor. Details study of ac conductivity plot reveals that the material obeys universal Jonscher's power law.

  13. Construction experiences from underground works at Forsmark. Compilation Report

    Energy Technology Data Exchange (ETDEWEB)

    Carlsson, Anders [Vattenfall Power Consultant AB, Stockholm (Sweden); Christiansson, Rolf [Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden)

    2007-02-15

    The main objective with this report, the Construction Experience Compilation Report (CECR), is to compile experiences from the underground works carried out at Forsmark, primarily construction experiences from the tunnelling of the two cooling water tunnels of the Forsmark nuclear power units 1, 2 and 3, and from the underground excavations of the undersea repository for low and intermediate reactor waste, SFR. In addition, a brief account is given of the operational experience of the SFR on primarily rock support solutions. The authors of this report have separately participated throughout the entire construction periods of the Forsmark units and the SFR in the capacity of engineering geologists performing geotechnical mapping of the underground excavations and acted as advisors on tunnel support; Anders Carlsson participated in the construction works of the cooling water tunnels and the open cut excavations for Forsmark 1, 2 and 3 (geotechnical mapping) and the Forsmark 3 tunnel (advise on tunnel support). Rolf Christiansson participated in the underground works for the SFR (geotechnical mapping, principal investigator for various measurements and advise on tunnel support and grouting). The report is to a great extent based on earlier published material as presented in the list of references. But it stands to reason that, during the course of the work with this report, unpublished notes, diaries, drawings, photos and personal recollections of the two authors have been utilised in order to obtain such a complete compilation of the construction experiences as possible.

  14. Pumped helium system for cooling positron and electron traps to 1.2 K

    Science.gov (United States)

    Wrubel, J.; Gabrielse, G.; Kolthammer, W. S.; Larochelle, P.; McConnell, R.; Richerme, P.; Grzonka, D.; Oelert, W.; Sefzick, T.; Zielinski, M.; Borbely, J. S.; George, M. C.; Hessels, E. A.; Storry, C. H.; Weel, M.; Müllers, A.; Walz, J.; Speck, A.

    2011-06-01

    Extremely precise tests of fundamental particle symmetries should be possible via laser spectroscopy of trapped antihydrogen ( H¯) atoms. H¯ atoms that can be trapped must have an energy in temperature units that is below 0.5 K—the energy depth of the deepest magnetic traps that can currently be constructed with high currents and superconducting technology. The number of atoms in a Boltzmann distribution with energies lower than this trap depth depends sharply upon the temperature of the thermal distribution. For example, ten times more atoms with energies low enough to be trapped are in a thermal distribution at a temperature of 1.2 K than for a temperature of 4.2 K. To date, H¯ atoms have only been produced within traps whose electrode temperature is 4.2 K or higher. A lower temperature apparatus is desirable if usable numbers of atoms that can be trapped are to eventually be produced. This report is about the pumped helium apparatus that cooled the trap electrodes of an H¯ apparatus to 1.2 K for the first time. Significant apparatus challenges include the need to cool a 0.8 m stack of 37 trap electrodes separated by only a mm from the substantial mass of a 4.2 K Ioffe trap and the substantial mass of a 4.2 K solenoid. Access to the interior of the cold electrodes must be maintained for antiprotons, positrons, electrons and lasers.

  15. 疗医合编单位技术建设发展探析%Technology Construction and Development in the Unit Combining Recuperating and Medical Works

    Institute of Scientific and Technical Information of China (English)

    斯友良; 过贵元; 施文兴; 阮英轶; 宋启哲; 孙清华

    2013-01-01

    Combining with the practice in the units combining recuperating and medical works, the article introduces some considerations on the technology development from four aspects, including the medical special center, special key discipline, medical technology innovations and the building of specialized talented persons. It affords a useful lesson for the technology development in such units.%结合疗医合编单位实际,从医学专科中心、特色重点学科、疗养医疗技术创新和专业人才队伍建设四个方面探讨技术建设的思路,为疗医合编单位技术建设发展提供借鉴.

  16. Constructed Wetlands

    Science.gov (United States)

    these systems can improve water quality, engineers and scientists construct systems that replicate the functions of natural wetlands. Constructed wetlands are treatment systems that use natural processes

  17. Conducting water chemistry of the secondary coolant circuit of VVER-based nuclear power plant units constructed without using copper containing alloys

    Science.gov (United States)

    Tyapkov, V. F.

    2014-07-01

    The secondary coolant circuit water chemistry with metering amines began to be put in use in Russia in 2005, and all nuclear power plant units equipped with VVER-1000 reactors have been shifted to operate with this water chemistry for the past seven years. Owing to the use of water chemistry with metering amines, the amount of products from corrosion of structural materials entering into the volume of steam generators has been reduced, and the flow-accelerated corrosion rate of pipelines and equipment has been slowed down. The article presents data on conducting water chemistry in nuclear power plant units with VVER-1000 reactors for the secondary coolant system equipment made without using copper-containing alloys. Statistical data are presented on conducting ammonia-morpholine and ammonia-ethanolamine water chemistries in new-generation operating power units with VVER-1000 reactors with an increased level of pH. The values of cooling water leaks in turbine condensers the tube system of which is made of stainless steel or titanium alloy are given.

  18. Construction and startup experience for Milliken FGD Retrofit Project

    Energy Technology Data Exchange (ETDEWEB)

    Harvilla, J.; Mahlmeister, M. [New York State Electric and Gas Corp., Binghamton, NY (United States); Buchanan, T.; Jackson, C. [Parsons Power Group, Inc., Reading, PA (United States); Watts, J. [USDOE, Pittsburgh Energy Technology Center, PA (United States)

    1996-12-01

    Under Round 4 of the U.S. Department of Energy`s Clean Coal Technology program, New York State Electric & Gas Corp. (NYSEG), in partnership with Saarbereg-Stebbins Engineering and Manufacturing Company, has retrofitted a formic acid enhanced forced oxidation wet limestone scrubber on Units 1 & 2 at the Milliken Steam Electric Station. Units 1 & 2 are 1950`s vintage Combustion Engineering tangentially fired pulverized coal units which are rated at nominal 150 MW each and operate in balanced draft mode. The FGD system for Unit 2 was placed into operation in January 1995 and the Unit 1 system in June, 1995. The project incorporates several unique aspects including low pH operation, a ceramic tile-lined cocurrent/countercurrent, split module absorber, a wet stack supported on the roof of the FGD building, and closed loop, zero liquid discharge operation producing commercial grade gypsum, and calcium chloride brine. The project objectives include 98% SO{sub 2} removal efficiency while burning high sulfur coal, the production of marketable byproducts to minimize solid waste disposal, zero wastewater discharge and space-saving design. The paper provides a brief overview of the project design, discusses construction and startup issues and presents early operating results. Process capital cost and economics of this design, procure and construct approach are reviewed relative to competing technologies.

  19. Rectangular Polyomino Set Weak (1,2)-achievement Games

    CERN Document Server

    Fisher, Edgar

    2010-01-01

    In a polyomino set (1,2)-achievement game the maker and the breaker alternately mark one and two previously unmarked cells respectively. The maker's goal is to mark a set of cells congruent to one of a given set of polyominoes. The breaker tries to prevent the maker from achieving his goal. The teams of polyominoes for which the maker has a winning strategy is determined up to size 4. In set achievement games, it is natural to study infinitely large polyominoes. This enables the construction of super winners that characterize all winning teams up to a certain size.

  20. Construction And Application Of Thermal Power Plant Coal-Fired Unit Price Analysis Model%火力发电厂燃煤单价分析模型的构建与应用

    Institute of Scientific and Technical Information of China (English)

    徐旭; 王树政; 方良兵

    2015-01-01

    The article introduces the background, model innovation of analysis coal-fired unit price analysis model construction. It also introduces model construction method and contented model application casesdetail. It finally proposes economic benefits after the model is applied. Through establishment of model embedded into EXCEL table, we can quantitatively analyze the whole the process of coal-fired price from entering the factory to burning in the furnace, it reveals the standard coal unit price change trend and its cause, which help guide the business management practice and provide effective reference for administrators decision-making.%简单介绍了燃煤单价分析模型构建的背景,模型的创新点,详细介绍了模型的构建方法和内容及模型应用的实例,最后给出了模型应用后的经济效益。通过建立模型嵌入到EXCEL表格中,文表并茂进行定量分析,可以实现对燃煤价格从入厂到入炉的全过程分析,揭示标煤单价变化的态势及其成因,有助于指导经营管理实践,为管理者制订决策提供有效的参考。

  1. Construction and operation of the flue gas desulphurization plant at Altbach/Deizisau power station, unit no. 5. Experience from commissioning and initial operating period

    Energy Technology Data Exchange (ETDEWEB)

    Maier, R.; Necker, P.; Strauss, J.; Hemming, H.; Landgraf, E.

    1987-04-01

    Since take-over the flue gas desulphurization plant has easily maintained the required level of desulphurisation. Caking-on and incrustation are substantially avoided. By redesigning the gypsum drying process an easily storable gypsum which can be used both in the gypsum and cement industry is produced. According to experience gained to date it is expected that the flue gas desulphurisation plant will not impair the availability of the power plant unit taking into account statutory regulations. In overall terms the plant has satisfactorily fulfilled the expectations of the operator.

  2. Evaluación del gasto en la construcción de unidades de salud: ejemplo de participación comunitaria Expenditure evaluation of the construction of health units: example of community participation

    Directory of Open Access Journals (Sweden)

    José Antonio Tapia-Cruz

    2003-12-01

    ón con otros programas de construcción. Debe valorarse la viabilidad de emplear participación comunitaria en otras actividades normales de los servicios de salud.OBJECTIVE: Demonstrate the economic benefits that community participation may render in the construction of health units. MATERIALS AND METHODS: The purpose of this study was to analyze the efficiency in the construction of 21 auxiliary health units and 81 rural health built through the Program to Support the Development of Health Services for the Non-Insured Population (PASSPA through three different construction models (national public bidding, restricted invitation and community participation. Comparisons were also made with the units built through regular construction procedures of the Ministry of Health and other institutions. To evaluate the expenditure/m², a univariate analysis using non-parametric statistics and a mathematical model of bootstrapping were used. RESULTS: The median expenditure/m² and the delivery times for auxiliary health units, and the median expenditure/m² for rural health units were smaller when using community participation. The expenditure/m² of those units built through PASSPA was considerably lower than that of health units built through regular construction procedures. CONCLUSIONS: The use of community participation in the construction of auxiliary health units and rural health units may impact positively the resource investment and the delivery times when compared with units built through national public biddings and restricted invitations. The possibility of using community participation in other health activities (supervision, maintenance should be evaluated.

  3. Selective Laser Melting: a regular unit cell approach for the manufacture of porous, titanium, bone in-growth constructs, suitable for orthopedic applications.

    Science.gov (United States)

    Mullen, Lewis; Stamp, Robin C; Brooks, Wesley K; Jones, Eric; Sutcliffe, Christopher J

    2009-05-01

    In this study, a novel porous titanium structure for the purpose of bone in-growth has been designed, manufactured and evaluated. The structure was produced by Selective Laser Melting (SLM); a rapid manufacturing process capable of producing highly intricate, functionally graded parts. The technique described utilizes an approach based on a defined regular unit cell to design and produce structures with a large range of both physical and mechanical properties. These properties can be tailored to suit specific requirements; in particular, functionally graded structures with bone in-growth surfaces exhibiting properties comparable to those of human bone have been manufactured. The structures were manufactured and characterized by unit cell size, strand diameter, porosity, and compression strength. They exhibited a porosity (10-95%) dependant compression strength (0.5-350 Mpa) comparable to the typical naturally occurring range. It is also demonstrated that optimized structures have been produced that possesses ideal qualities for bone in-growth applications and that these structures can be applied in the production of orthopedic devices.

  4. 野战医疗队无线Mesh快速组网%Fast Construct Network for Wireless Mesh in Field Medical Unit

    Institute of Scientific and Technical Information of China (English)

    万任华; 林亚忠; 林村河; 王苓; 顾金库

    2011-01-01

    传统的联网方式容易受距离和复杂地形的影响,不适合野战医疗队所处的复杂地理环境.针对这一不足,本文提出一种基于无线Mesh网络技术的野战医疗临时组网方案,利用无线Mesh网络技术高带宽、健壮性、非视距传输和兼容性等优点,实现野战环境的组网,并对Mesh网络的性能特点和可能存在的问题进行探讨.%It is vulnerable to distance and complex terrain for the ways of traditional networking, which are not suitable to the complex geographical environment for field medical unit.In response to this deficiency, a temporary networking program based on wireless Mesh network for the field medical unit is proposed.The program takes the advantages of high - bandwidth, robustness, non - sight transmission and compatibility of the wireless Mesh network, and makes the temporary networking into realize under the field environment.At last, the performance and the potential problems of Mesh network are discussed.

  5. Construction management

    CERN Document Server

    Pellicer, Eugenio; Teixeira, José C; Moura, Helder P; Catalá, Joaquín

    2014-01-01

    The management of construction projects is a wide ranging and challenging discipline in an increasingly international industry, facing continual challenges and demands for improvements in safety, in quality and cost control, and in the avoidance of contractual disputes. Construction Management grew out of a Leonardo da Vinci project to develop a series of Common Learning Outcomes for European Managers in Construction. Financed by the European Union, the project aimed to develop a library of basic materials for developing construction management skills for use in a pan-European context. Focused exclusively on the management of the construction phase of a building project from the contractor's point of view, Construction Management covers the complete range of topics of which mastery is required by the construction management professional for the effective delivery of new construction projects. With the continued internationalisation of the construction industry, Construction Management will be required rea...

  6. Chapter K: Progress in the Evaluation of Alkali-Aggregate Reaction in Concrete Construction in the Pacific Northwest, United States and Canada

    Science.gov (United States)

    Shrimer, Fred H.

    2005-01-01

    The supply of aggregates suitable for use in construction and maintenance of infrastructure in western North America is a continuing concern to the engineering and resources-management community. Steady population growth throughout the region has fueled demand for high-quality aggregates, in the face of rapid depletion of existing aggregate resources and slow and difficult permitting of new sources of traditional aggregate types. In addition to these challenges, the requirement for aggregates to meet various engineering standards continues to increase. In addition to their physical-mechanical properties, other performance characteristics of construction aggregates specifically depend on their mineralogy and texture. These properties can result in deleterious chemical reactions when aggregate is used in concrete mixes. When this chemical reaction-termed 'alkali-aggregate reaction' (AAR)-occurs, it can pose a major problem for concrete structures, reducing their service life and requiring expensive repair or even replacement of the concrete. AAR is thus to be avoided in order to promote the longevity of concrete structures and to ensure that public moneys invested in infrastructure are well spent. Because the AAR phenomenon is directly related to the mineral composition, texture, and petrogenesis of the rock particles that make up aggregates, an understanding of the relation between the geology and the performance of aggregates in concrete is important. In the Pacific Northwest, some aggregates have a moderate to high AAR potential, but many others have no or only a low AAR potential. Overall, AAR is not as widespread or serious a problem in the Pacific Northwest as in other regions of North America. The identification of reactive aggregates in the Pacific Northwest and the accurate prediction of their behavior in concrete continue to present challenges for the assessment and management of geologic resources to the owners and operators of pits and quarries and to the

  7. The Paradox of Religion: The (reConstruction of Hindu and Muslim Identities amongst South Asian Diasporas in the United States

    Directory of Open Access Journals (Sweden)

    Aminah Mohammad-Arif

    2007-10-01

    Full Text Available In the process of (reconstructing their identities in an alien society, South Asians have tended to give to religion a significant importance. This salience of religion owes as much to the dislocation and the stigmatization engendered by the migration experience as to the local context, the United States, who, while promoting a policy of multiculturalism, sees religion as an ‘acceptable’ identity marker. Drawing on this process, this article examines the implications on the inter-ethnic relationships, in particular between Hindus and Muslims (both Indian and Pakistani, as two opposite and competing trends are underway: on the one hand, separate, if not confrontational, Hindu and Muslim identities are arising, while on the other hand, a South Asian identity, ignoring the borders of Partition, is shaping up.

  8. [N,N-Bis(2-aminoethylethane-1,2-diamine](ethane-1,2-diaminenickel(II thiosulfate trihydrate

    Directory of Open Access Journals (Sweden)

    Beatrix Seidlhofer

    2012-02-01

    Full Text Available The title compound, [Ni(C2H8N2(C6H18N4]S2O3·3H2O, was accidentally synthesized under solvothermal conditions applying [Ni(en3]Cl2 (en is ethane-1,2-diamine as the Ni source. The asymmetric unit consists of one discrete [Ni(tren(en]2+ complex [tren is N,N-bis(2-aminoethylethane-1,2-diamine] in which the Ni2+ cation is sixfold coordinated within a slightly distorted octahedron, one thiosulfate anion and three water molecules. In the crystal, the complex cations, anions and water molecules are linked by an intricate hydrogen-bonding network. One C atom of the tren ligand, as well as one O atom of a water molecule, are disordered over two sites and were refined using a split model (occupancy ratios = 0.85:15 and 0.60:0.40, respectively.

  9. Final environmental impact statement for the construction and operation of an independent spent fuel storage installation to store the Three Mile Island Unit 2 spent fuel at the Idaho National Engineering and Environmental Laboratory. Docket Number 72-20

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This Final Environmental Impact Statement (FEIS) contains an assessment of the potential environmental impacts of the construction and operation of an Independent Spent Fuel Storage Installation (ISFSI) for the Three Mile Island Unit 2 (TMI-2) fuel debris at the Idaho National Engineering and Environmental laboratory (INEEL). US Department of Energy-Idaho Operations Office (DOE-ID) is proposing to design, construct, and operate at the Idaho Chemical Processing Plant (ICPP). The TMI-2 fuel debris would be removed from wet storage, transported to the ISFSI, and placed in storage modules on a concrete basemat. As part of its overall spent nuclear fuel (SNF) management program, the US DOE has prepared a final programmatic environmental impact statement (EIS) that provides an overview of the spent fuel management proposed for INEEL, including the construction and operation of the TMI-2 ISFSI. In addition, DOE-ID has prepared an environmental assessment (EA) to describe the environmental impacts associated with the stabilization of the storage pool and the construction/operation of the ISFSI at the ICPP. As provided in NRC`s NEPA procedures, a FEIS of another Federal agency may be adopted in whole or in part in accordance with the procedures outlined in 40 CFR 1506.3 of the regulations of the Council on Environmental Quality (CEQ). Under 40 CFR 1506.3(b), if the actions covered by the original EIS and the proposed action are substantially the same, the agency adopting another agency`s statement is not required to recirculate it except as a final statement. The NRC has determined that its proposed action is substantially the same as actions considered in DOE`s environmental documents referenced above and, therefore, has elected to adopt the DOE documents as the NRC FEIS.

  10. Alternative biological sources for 1,2,3,4-tetramethylbenzene in flash pyrolysates of kerogen

    NARCIS (Netherlands)

    Sinninghe Damsté, J.S.; Hoefs, M.J.L.; Heemst, J.D.H. van; Gelin, F.; Koopmans, M.P.; Kaam-Peters, H.M.E. van; Schouten, S.; Leeuw, J.W. de

    1995-01-01

    Pyrolysates of kerogens isolated from Indian Ocean surface sediments and from Black Sea Unit II contain abundant 1,2,3,4-tetramethylbenzene (1,2,3,4-TMB) suggesting the presence of macromolecularly-bound isorenieratane skeletons derived from isorenieratene biosynthesized by green sulphur bacteria

  11. The stereodynamics of 1,2-dipropyldiaziridines.

    Science.gov (United States)

    Trapp, Oliver; Sahraoui, Laila; Hofstadt, Werner; Könen, Werner

    2010-02-01

    N-alkylated trans-diaziridines are an intriguing class of compounds with two stereogenic nitrogen atoms which easily interconvert. In the course of our investigations of the nature of the interconversion process via nitrogen inversion or electrocyclic ring opening ring closure, we synthesized and characterized the three constitutionally isomeric diaziridines 1,2-di-n-propyldiaziridine 1, 1-isopropyl-2-n-propyldiaziridine 2, and 1,2-diisopropyldiaziridine 3 to study the influence of the substituents on the interconversion barriers. Enantiomer separation was achieved by enantioselective gas chromatography on the chiral stationary phase Chirasil-beta-Dex with high separation factors alpha (1-isopropyl-2-n-propyldiaziridine: 1.18; 1, 2-diisopropyldiaziridine: 1.24; 100 degrees C 50 kPa He) for the isopropyl substituted diaziridines. These compounds showed pronounced plateau formation between 100 and 150 degrees C, and peak coalescence at elevated temperatures. The enantiomerization barriers DeltaG(double dagger) and activation parameters DeltaH(double dagger) and DeltaS(double dagger) were determined by enantioselective dynamic gas chromatography (DGC) and direct evaluation of the elution profiles using the unified equation implemented in the software DCXplorer. Interestingly, 1-isopropyl-2-n-propyldiaziridine and 1,2-diisopropyldiaziridine exhibit similar high interconversion barriers DeltaG(double dagger) (100 degrees C) of 128.3 +/- 0.4 kJ mol(-1) and 129.8 +/- 0.4 kJ mol(-1), respectively, which indicates that two sterically demanding substituents do not substantially increase the barrier as expected for a distinct nitrogen inversion process.

  12. Spin 1/2 and Invariant Coefficients

    OpenAIRE

    Shurtleff, Richard

    2004-01-01

    Massive spin 1/2 particles require 2-spinors for rotations, 4-spinors for rotations and boosts with parity. Including translations requires 8-spinors. Adapting 4-spinor field theory to 8-spinor fields with translation symmetry is discussed here. It is shown that four of these spin components act like conventional 4-spinors, satisfying the conventional free-particle Dirac equation. The remaining four components have unconventional coordinate dependence due to translation symmetry. One finds th...

  13. Construction program management

    CERN Document Server

    Delaney, Joseph

    2013-01-01

    Although construction is one of the largest industries in the United States, it lags behind other industries in its implementation of modern management techniques such as those contained in the Standard for Program Management (the Standard) by the Project Management Institute (PMI(R)). Construction Program Management details the successful use of the PMI(R) approach for the construction of capital programs. It demonstrates, through case studies, how implementation of PMI's set of tools and techniques can improve the chances of program success. Exploring tactical and strategic management method

  14. SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE POLYESTERAMIDES CONSTRUCTED MAINLY BY ALTERNATING DIESTERDIAMIDE UNITS FROM N,N'-BIS(2-HYDROXYETHYL)-ADIPAMIDE AND DIACIDS

    Institute of Scientific and Technical Information of China (English)

    Hui-yun Sun; Tiao Yin; Jing-bo Zhao; Zhi-yuan Zhang; Wan-tai Yang

    2013-01-01

    Two kinds of aliphatic alternating polyesteramide prepolymers were prepared through melt polycondensation from N,N'-bis(2-hydroxyethyl)-adipamide and adipic acid or sebacic acid.Chain extension of them was conducted with 2,2'-(1,4-phenylene)-bis(2-oxazoline) and adipoyl biscaprolactamate as combined chain extenders.The chain extended polyesteramides (ExtPEAs) were characterized by IR,1H-NMR,differential scanning calorimetry,thermogravimetric analysis,wide angle X-ray scattering,tensile test and enzymatic degradation.The results showed that the ExtPEA(4,m)s were mainly constituted with the diester adipamide alternating units.ExtPEA(4,4) and ExtPEA(4,8) had Tm of 83.8℃ and 85.8℃ and initial decomposition temperature above 310.0℃.They crystallized similarly as Nylon-66 did and were flexible thermoplastic materials with tensile strength up to 25.64 MPa and strain at break up to 737%.

  15. Siting algae cultivation facilities for biofuel production in the United States: trade-offs between growth rate, site constructability, water availability, and infrastructure

    Energy Technology Data Exchange (ETDEWEB)

    Venteris, Erik R.; McBride, Robert; Coleman, Andre M.; Skaggs, Richard; Wigmosta, Mark S.

    2014-02-21

    Locating sites for new algae cultivation facilities is a complex task. The climate must support high growth rates, and cultivation ponds require appropriate land and water resources as well as key utility and transportation infrastructure. We employ our spatiotemporal Biomass Assessment Tool (BAT) to select promising locations based on the open-pond cultivation of Arthrospira sp. and a strain of the order Desmidiales. 64,000 potential sites across the southern United States were evaluated. We progressively apply a range of screening criteria and track their impact on the number of selected sites, geographic location, and biomass productivity. Both strains demonstrate maximum productivity along the Gulf of Mexico coast, with the highest values on the Florida peninsula. In contrast, sites meeting all selection criteria for Arthrospira were located along the southern coast of Texas and for Desmidiales were located in Louisiana and southern Arkansas. Site selection was driven mainly by the lack of oil pipeline access in Florida and elevated groundwater salinity in southern Texas. The requirement for low salinity freshwater (<400 mg L-1) constrained Desmidiales locations; siting flexibility is greater for salt-tolerant species such as Arthrospira. Combined siting factors can result in significant departures from regions of maximum productivity but are within the expected range of site-specific process improvements.

  16. Usability Constructs

    DEFF Research Database (Denmark)

    Hertzum, Morten; Clemmesen, Torkil; Hornbæk, Kasper Anders Søren

    2007-01-01

    Whereas research on usability predominantly employs universal definitions of the aspects that comprise usability, people experience their use of information systems through personal constructs. Based on 48 repertory-grid interviews, this study investigates how such personal constructs are affecte...

  17. Banana-shaped 1,2,4-oxadiazoles

    Indian Academy of Sciences (India)

    S I Torgova; T A Geivandova; O Francescangeli; A Strigazzi

    2003-08-01

    3,5-Disubstituted 1,2,4-oxadiazoles are a new type of liquid crystalline (LC) compounds with asymmetrical five-membered heterocycle as a central unit. They have a bent shape and are very convenient model-compounds for studying the dependence of the LC properties on the molecular design. We have also synthesized and investigated ‘banana-shaped’ 1,2,4-oxadiazoles using the ester groups as the linkage units. The new compounds exhibit spontaneous polarization in the smectic phase, even if there is no chiral group in the molecules. Preliminary experimental data suggest the presence of spontaneous polarization in the nematic phase as well. In order to study the structural properties of the LC phases, X-ray diffraction (XRD) measurements on powder samples have been carried out. Based on the XRD data, a model of the structural arrangement of the bent molecules in the smectic phase is provided, which accounts for the macroscopic spontaneous polarization as well as the ferroelectric switching behavior.

  18. Electrochemical construction

    Science.gov (United States)

    Einstein, Harry; Grimes, Patrick G.

    1983-08-23

    An electrochemical cell construction features a novel co-extruded plastic electrode in an interleaved construction with a novel integral separator-spacer. Also featured is a leak and impact resistant construction for preventing the spill of corrosive materials in the event of rupture.

  19. Ground states, magnetization plateaus and bipartite entanglement of frustrated spin-1/2 Ising-Heisenberg and Heisenberg triangular tubes

    Science.gov (United States)

    Alécio, Raphael C.; Lyra, Marcelo L.; Strečka, Jozef

    2016-11-01

    The ground-state phase diagram, magnetization process and bipartite entanglement of the frustrated spin-1/2 Ising-Heisenberg and Heisenberg triangular tube (three-leg ladder) are investigated in a non-zero external magnetic field. The exact ground-state phase diagram of the spin-1/2 Ising-Heisenberg tube with Heisenberg intra-rung and Ising inter-rung couplings consists of six distinct gapped phases, which manifest themselves in a magnetization curve as intermediate plateaus at zero, one-third and two-thirds of the saturation magnetization. Four out of six available ground states exhibit quantum entanglement between two spins from the same triangular unit evidenced by a non-zero concurrence. Density-matrix renormalization group calculations are used in order to construct the ground-state phase diagram of the analogous but purely quantum spin-1/2 Heisenberg tube with Heisenberg intra- and inter-rung couplings, which consists of four gapped and three gapless phases. The Heisenberg tube shows a continuous change of the magnetization instead of a plateau at zero magnetization, while the intermediate one-third and two-thirds plateaus may be present or not in the zero-temperature magnetization curve.

  20. Modular cleanroom construction success.

    Science.gov (United States)

    Möllmann, Markus

    2007-09-01

    The completion of a 408 m2 major new aseptic pharmacy unit for the St George's Hospital NHS Trust, London, is a significant example of the benefits of using modern modular construction techniques compared to a traditional cleanroom build. At every stage from concept through project planning to final completion, the use of modules proved to be the most appropriate for the task.

  1. Brief analysis of "the flexible management system" which constructing and implementing in medical scientific research units%浅议医学科研单元"柔性管理体系"的建立和应用

    Institute of Scientific and Technical Information of China (English)

    林仲武; 胡向军; 张宏

    2009-01-01

    从医学科研机构引入柔性管理的可行性及其在实施管理中涉及的价值认同体系、模糊评价体系、科学管理目标和信息化共享机制等方面的建设内容着手,结合中科院创新工程和军事医学科学院的实践经验,初步阐述了医学科研单元"柔性化管理体系"的建设内涵和重点,为丰富医学科研管理思想提供思路.%This paper introduced the feasibility of flexible management from medical scientific re-search institutions, embarks on the aspects of construction contents such as value identity system, fuzzy eval-uation system, sharing mechanism of scientific management aims and information involving in implementing management. And the paper combined with the experience of the innovation projects in Chinese Academy of Sciences and our institution, and preliminarily expounds the construction connotations and keys of the "flexi-ble management system" in medical scientific research units to provide ideas for enriching the management thoughts of medical scientific research.

  2. 1,2-Bis(4-methylbenzyldiselane

    Directory of Open Access Journals (Sweden)

    Mei-Yun Zhou

    2012-04-01

    Full Text Available The title molecule, C16H18Se2, features a diselenide bridge between two 4-methylbenzyl units, in which the central C—Se—Se—C torsion angle is 88.1 (3°, while the two Se—Se—C—C fragments assume gauche conformations, with torsion angles of −51.8 (5 and 59.1 (4°. The dihedral angle between the benzene rings is 78.9 (2°.

  3. Taming the 1.2 m Telescope

    Science.gov (United States)

    Griffin, S.; Edwards, M.; Greenwald, D.; Kono, D.; Liang, D.; Lohnes, K.; Wright, V.; Spillar, E.

    2013-09-01

    Achievable residual jitter on the 1.2 m telescope at MSSS shown in Figure 1 has historically been limited to 10-20 arc-sec. peak in moderate wind conditions due to the combination of the dynamics associated with the twin telescopes on the common declination axis shaft, and the related control system behavior. Figure 1 1.2 m Telescope The lightly damped, low frequency fundamental vibration mode shape of the telescopes rotating out of phase on the common declination axis shaft severely degraded the performance of the prior controllers. This vibration mode is easily excited by external forces such as wind loading and internal torque commands from the mount control system. The relatively poor historic performance was due to a combination of the low error rejection of external disturbances, and the controller exciting the mode. A radical new approach has been implemented that has resulted in a decrease of jitter to less than 1 arcsec under most conditions. The new approach includes minor hardware modifications to provide active damping with accelerometers as feedback sensors. This architecture has allowed a bandwidth increase of almost an order of magnitude and eliminated the large amplitude motions at the mode natural frequency, resulting in much improved pointing and jitter performance. A representative comparison of historical versus new architecture performance is shown in Figure 2 for the declination axis.

  4. The 1 , 2 , 3-Conjecture And 1 , 2-Conjecture For Sparse Graphs

    Directory of Open Access Journals (Sweden)

    Cranston Daniel W.

    2014-11-01

    Full Text Available The 1, 2, 3-Conjecture states that the edges of a graph without isolated edges can be labeled from {1, 2, 3} so that the sums of labels at adjacent vertices are distinct. The 1, 2-Conjecture states that if vertices also receive labels and the vertex label is added to the sum of its incident edge labels, then adjacent vertices can be distinguished using only {1, 2}. We show that various configurations cannot occur in minimal counterexamples to these conjectures. Discharging then confirms the conjectures for graphs with maximum average degree less than 8/3. The conjectures are already confirmed for larger families, but the structure theorems and reducibility results are of independent interest.

  5. On a directed variation of the 1-2-3 and 1-2 Conjectures

    DEFF Research Database (Denmark)

    Barme, Emma; Bensmail, Julien; Przybyło, Jakub;

    2016-01-01

    In this paper, we consider the following question, which stands as a directed analogue of the well-known 1-2-3 Conjecture: Given any digraph D with no arc uv verifying d+(u) = d¯(v) = 1, is it possible to weight the arcs of D with weights among ⟨1; 2; 3⟩ so that, for every arc uv of D, the sum of...

  6. PRIze{sup TM} 1.2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-10-01

    PRIze{sup TM} 1.2 is a computer program that evaluates the improved oil recovery (IOR) potential of petroleum reservoirs including the use of horizontal wells. It was created in 1992 and has since been used in over 800 reservoir evaluations. The tool provides information on the feasibility of IOR processes based on reservoir parameters. PRIze{sup TM} makes predictions for chemical, gas injection and thermal IOR processes based on both vertical and horizontal wells. The program provides a uniform data entry screen that allows the user to input 42 average values of geological parameters, fluid properties and oil production mechanism information into a data file. The data can be used to provide a production forecast, and enable the user to establish, to a first order approximation, the economic viability of a given process.

  7. 1,2-Bis(N′-benzoylthioureidobenzene

    Directory of Open Access Journals (Sweden)

    Aliou Hamady Barry

    2008-05-01

    Full Text Available The title compound, C22H18N4O2S2, was characterized by 1H and 13C NMR, solid-state IR spectroscopy and X-ray crystallographic techniques. The crystal structure determination reveals that the twisting modes of the two side arms are different [C—N—C—O and C—N—C—N torsion angles = −1.2 (3 and 1.1 (3°, respectively, in one arm and 24.1 (3 and −5.1 (3°, respectively, in the other]. The crystal structure involves N—H...O and N—H...S hydrogen bonds.

  8. 1,2-hydroxypyridonates as contrast agents for magnetic resonance imaging: TREN-1,2-HOPO.

    Science.gov (United States)

    Jocher, Christoph J; Moore, Evan G; Xu, Jide; Avedano, Stefano; Botta, Mauro; Aime, Silvio; Raymond, Kenneth N

    2007-10-29

    1,2-Hydroxypyridinones (1,2-HOPO) form very stable lanthanide complexes that may be useful as contrast agents for magnetic resonance imaging (MRI). X-ray diffraction of single crystals established that the solid-state structures of the Eu(III) and the previously reported [Inorg. Chem. 2004, 43, 5452] Gd(III) complex are identical. The recently discovered sensitizing properties of 1,2-HOPO chelates for Eu(III) luminescence [J. Am. Chem. Soc. 2006, 128, 10 067] allow for direct measurement of the number of water molecules coordinated to the metal center. Fluorescence measurements of the Eu(III) complex corroborate that, in solution, two water molecules coordinate the lanthanide (q = 2) as proposed from the analysis of NMRD profiles. In addition, fluorescence measurements have verified the anion binding interactions of lanthanide TREN-1,2-HOPO complexes in solution, studied by relaxivity, revealing only very weak oxalate binding (KA = 82.7 +/- 6.5 M-1). Solution thermodynamic studies of the metal complex and free ligand have been carried out using potentiometry, spectrophotometry, and fluorescence spectroscopy. The metal ion selectivity of TREN-1,2-HOPO supports the feasibility of using 1,2-HOPO ligands for selective lanthanide binding [pGd = 19.3 (2), pZn = 15.2 (2), pCa = 8.8 (3)].

  9. Construction Minerals Operations - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer includes construction minerals operations in the United States. The data represent commodities covered by the Minerals Information Team (MIT) of the...

  10. Ship construction

    National Research Council Canada - National Science Library

    Eyres, D.J; Bruce, G.J

    2012-01-01

    .... "Acting as both a professional reference on current approaches in shipyard practice and a comprehensive introduction for students in any marine discipline, Ship Construction covers the complete...

  11. Constructive Fun.

    Science.gov (United States)

    Simanek, Donald E.

    1994-01-01

    Compares and reviews currently available brands of steel construction sets that are useful to physics teachers for building demonstrations, prototypes of mechanisms, robotics, and remote control devices. (ZWH)

  12. Real-space renormalization group method for quantum 1/2 spins on the pyrochlore lattice.

    Science.gov (United States)

    Garcia-Adeva, Angel J

    2014-04-02

    A simple phenomenological real-space renormalization group method for quantum Heisenberg spins with nearest and next nearest neighbour interactions on a pyrochlore lattice is presented. Assuming a scaling law for the order parameter of two clusters of different sizes, a set of coupled equations that gives the fixed points of the renormalization group transformation and, thus, the critical temperatures and ordered phases of the system is found. The particular case of spins 1/2 is studied in detail. Furthermore, to simplify the mathematical details, from all the possible phases arising from the renormalization group transformation, only those phases in which the magnetic lattice is commensurate with a subdivision of the crystal lattice into four interlocked face-centred cubic sublattices are considered. These correspond to a quantum spin liquid, ferromagnetic order, or non-collinear order in which the total magnetic moment of a tetrahedral unit is zero. The corresponding phase diagram is constructed and the differences with respect to the classical model are analysed. It is found that this method reproduces fairly well the phase diagram of the pyrochlore lattice under the aforementioned constraints.

  13. Pumped helium system for cooling positron and electron traps to 1.2 K

    CERN Document Server

    Wrubel, J; Kolthammer, W S; Larochelle, P; McConnell, R; Richerme, P; Grzonka, D; Oelert, W; Sefzick, T; Zielinski, M; Borbely, J S; George, M C; Hessels, E A; Storry, C H; Weel, M; Mullers, A; Walz, J; Speck, A

    2011-01-01

    Extremely precise tests of fundamental particle symmetries should be possible via laser spectroscopy of trapped antihydrogen ((H) over bar) atoms. (H) over bar atoms that can be trapped must have an energy in temperature units that is below 0.5 K-the energy depth of the deepest magnetic traps that can currently be constructed with high currents and superconducting technology. The number of atoms in a Boltzmann distribution with energies lower than this trap depth depends sharply upon the temperature of the thermal distribution. For example, ten times more atoms with energies low enough to be trapped are in a thermal distribution at a temperature of 1.2 K than for a temperature of 4.2 K. To date, (H) over bar atoms have only been produced within traps whose electrode temperature is 4.2 K or higher. A lower temperature apparatus is desirable if usable numbers of atoms that can be trapped are to eventually be produced. This report is about the pumped helium apparatus that cooled the trap electrodes of an (H) ove...

  14. 3-(4-Amino-1,2,5-oxadiazol-3-yl-4-(4-nitro-1,2,5-oxadiazol-3-yl-1,2,5-oxadiazole

    Directory of Open Access Journals (Sweden)

    Philip Pagoria

    2014-05-01

    Full Text Available The title compound 3-(4-amino-1,2,5-oxadiazol-3-yl-4-(4-nitro-1,2,5-oxadiazol-3-yl-1,2,5-oxadiazole (ANFF-1 was synthesized by: (1 by reaction of 3,4-bis(4-nitro-1,2,5-oxadiazol-3-yl-1,2,5-oxadiazole (BNFF-1 with gaseous ammonia in toluene and (2 by partial oxidation of 3,4-bis(4-amino-1,2,5-oxadiazol-3-yl-1,2,5-oxadiazole (BAFF-1 with 35% H2O2 in concentrated H2SO4.

  15. Generalized Spin-1/2 Operators and their Eigenvectors

    CERN Document Server

    Mweene, H V

    1999-01-01

    Recently, we have shown how the interpretation of quantum mechanics due to Lande' can be used to derive from first principles generalized formulas for the operators and some eigenvectors for spin 1/2. Though we gave the operators for all the components of the spin, we did not give the eigenvectors of the operators for the x and y components. We now give these eigenvectors. In addition, we present a new and simple method for deriving the operators for the x and y components of the spin as well as their eigenvectors from the corresponding quantities for the z component. We give a general proof that the operator for the square of the spin is the unit matrix multiplied by the value of the square of the spin.

  16. Language Test Construction and Evaluation.

    Science.gov (United States)

    Alderson, J. Charles; And Others

    The guide is intended for teachers who must construct language tests and for other professionals who may need to construct, evaluate, or use the results of language tests. Most examples are drawn from the field of English-as-a-Second-Language instruction in the United Kingdom, but the principles and practices described may be applied to the…

  17. Group divisible designs of four groups and block size five with configuration (1; 1; 1; 2

    Directory of Open Access Journals (Sweden)

    Ronald Mwesigwa

    2016-09-01

    Full Text Available We present constructions and results about GDDs with four groups and block size five in which each block has Configuration $(1, 1, 1, 2$, that is, each block has exactly one point from three of the four groups and two points from the fourth group. We provide the necessary conditions of the existence of a GDD$(n, 4, 5; \\lambda_1, \\lambda_2$ with Configuration $(1, 1, 1, 2$, and show that the necessary conditions are sufficient for a GDD$(n, 4, 5; \\lambda_1,$ $\\lambda_2$ with Configuration $(1, 1, 1, 2$ if $n \

  18. 新型城区——广州经济技术开发区与高新技术开发区建设探讨%CONSTRUCTING THE ECONOMIC DEVELOPMENT ZONES INTO A UNITED URBAN AREA OF GUANGZHOU

    Institute of Scientific and Technical Information of China (English)

    李郇

    2001-01-01

    在论述经济技术开发区、高新技术开发区与新型城区关系的基础上,依据城市空间自组织演化理论,提出按开放式的网络结构建设广州经济技术开发区与高新技术开发区新型城区的构想,并提出相应的创新网络、产业网络、基础设施网络和组织网络的建设策略。%Setting up economic development zones is an important strategyfor industrialization in China. In recent years the economic development zones, including high-tech development zone, have become new urban spatial organizations of industry. In the east of Guangzhou, there are four economic development zones: West Zone, North Zone, Yonghe Zone and Science Park, which are isolated in different places. They form important industrial areas in Guangzhou. There have been debates on urban spatial structure and the spatial relation among the development zones. It is considered that the aim should be taken at uniting the four zones and constructing spatial relation between the zones and Guangzhou as a whole. As high-tech development zone depends on urban infrastructure, knowledge and the manufacture of the economic development zone, the four zones should be united according to self-organization theory by making four networks including innovation, industry, infrastructure and management. In conclusion, the four zones would form a new city as a part of Guangzhou.

  19. A Three-dimensional Porous Metal-organic Framework Based on Cyano Unit and 1,4-Bis(1,2,4-triazol-1-yl)butane(btb):{[Cu_8(btb)_2(CN)_8].3H_2O}_n

    Institute of Scientific and Technical Information of China (English)

    周馨慧; 李洪辉; 黄维

    2012-01-01

    The title coordination polymer 1,{[Cu8(btb)2(CN)8].3H2O}n(btb = 1,4-bis(1,2,4-triazol-1-yl)butane),has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction.Complex 1 crystallizes in monoclinic,space group C2/c with a = 1.2938(3),b = 1.9422(5),c = 0.9406(2) nm,β = 121.891(4)°,V = 2.0066(9) nm3,C24H30Cu8N20O3,Mr = 1155.00,Dc = 1.912 g/cm3,μ(MoKα) = 4.209 mm?1,F(000) = 1140,GOF = 1.184,Z = 2,the final R = 0.0634 and wR = 0.1503 for I 2σ(I).In complex 1,one-dimensional CuCN zigzag chains are linked by triazolyl groups of btb ligands to form two-dimensional networks,which are further bridged by 1,4-butyl moieties of btb ligands to fabricate a three-dimensional order framework,in which one-dimensional ellipsoid-like channels are observed.

  20. Bis(μ-3-carboxy-2-hydroxypropane-1,2-dicarboxylatobis(diaquazinc–1,2-bis(pyridin-4-ylethene–water (1/1/2

    Directory of Open Access Journals (Sweden)

    In Hong Hwang

    2012-10-01

    Full Text Available The asymmetric unit of the title compound, [Zn2(C6H6O72(H2O4]·C12H10N2·2H2O, comprises half of a centrosymmetric complex dimer, half of a 1,2-bis(pyridin-4-ylethene molecule, which lies across an inversion centre, and one lattice water molecule. Carboxylate groups of two dianionic citrate ligands bridge two ZnII ions to give the cyclic dimer, with each ZnII ion coordinated by four O atoms from the chelating citrate ligand (one hydroxy and three carboxylate, with one bridging and two water O atoms, forming a distorted octahedral environment [Zn—O = 2.040 (3–2.244 (3 Å]. In the crystal, O—H...O and O—H...N hydrogen bonds involving hydroxy groups and both coordinating and lattice water molecules link the dimers to give a three-dimensional framework structure.

  1. An alternating GluN1-2-1-2 subunit arrangement in mature NMDA receptors.

    Directory of Open Access Journals (Sweden)

    Morgane Riou

    Full Text Available NMDA receptors (NMDARs form glutamate-gated ion channels that play a critical role in CNS physiology and pathology. Together with AMPA and kainate receptors, NMDARs are known to operate as tetrameric complexes with four membrane-embedded subunits associating to form a single central ion-conducting pore. While AMPA and some kainate receptors can function as homomers, NMDARs are obligatory heteromers composed of homologous but distinct subunits, most usually of the GluN1 and GluN2 types. A fundamental structural feature of NMDARs, that of the subunit arrangement around the ion pore, is still controversial. Thus, in a typical NMDAR associating two GluN1 and two GluN2 subunits, there is evidence for both alternating 1/2/1/2 and non-alternating 1/1/2/2 arrangements. Here, using a combination of electrophysiological and cross-linking experiments, we provide evidence that functional GluN1/GluN2A receptors adopt the 1/2/1/2 arrangement in which like subunits are diagonal to one another. Moreover, based on the recent crystal structure of an AMPA receptor, we show that in the agonist-binding and pore regions, the GluN1 subunits occupy a "proximal" position, closer to the central axis of the channel pore than that of GluN2 subunits. Finally, results obtained with reducing agents that differ in their membrane permeability indicate that immature (intracellular and functional (plasma-membrane inserted pools of NMDARs can adopt different subunit arrangements, thus stressing the importance of discriminating between the two receptor pools in assembly studies. Elucidating the quaternary arrangement of NMDARs helps to define the interface between the subunits and to understand the mechanism and pharmacology of these key signaling receptors.

  2. Enhancing Natural Attenuation through Bioaugmentation with Aerobic Bacteria that Degrade cis-1,2-Dichloroethene

    Science.gov (United States)

    2010-05-01

    cDCE cis-1,2-dichloroethene cfu colony forming units CMO cyclohexanone monooxygenase DCA 1,2-dichloroethane DNA deoxyribonucleic acid...of JS666) and (2) cyclohexanone monooxygenase (CMO) (based on the cyclohexanone monooxygenase gene of JS666). Additionally, a putative universal (UNI...molecular probes (one based on the isocitrate lyase gene and one based on the cyclohexanone monooygenase gene). In addition, JS666 activity and

  3. Construction aggregates

    Science.gov (United States)

    Nelson, T.I.; Bolen, W.P.

    2007-01-01

    Construction aggregates, primarily stone, sand and gravel, are recovered from widespread naturally occurring mineral deposits and processed for use primarily in the construction industry. They are mined, crushed, sorted by size and sold loose or combined with portland cement or asphaltic cement to make concrete products to build roads, houses, buildings, and other structures. Much smaller quantities are used in agriculture, cement manufacture, chemical and metallurgical processes, glass production and many other products.

  4. Responsible construction?

    OpenAIRE

    Lou, Eric; Lee,Angela; WU, SONG; Mathison, Gill

    2015-01-01

    The ability of the construction industry to innovate in order to improve its practice has been widely debated over the years. As more and more organisations in other sectors, globally, are addressing 21st century consumer challenges: encompassing fair-trade, ethically sourced and more recycled products; and are reporting on their corporate responsibility performance (such as Marks and Spencer's Plan A, The Co-operative, The Body Shop etc), isn't it about time the construction industry followe...

  5. Quasilocal Conserved Operators in the Isotropic Heisenberg Spin-1/2 Chain.

    Science.gov (United States)

    Ilievski, Enej; Medenjak, Marko; Prosen, Tomaž

    2015-09-18

    Composing higher auxiliary-spin transfer matrices and their derivatives, we construct a family of quasilocal conserved operators of isotropic Heisenberg spin-1/2 chain and rigorously establish their linear independence from the well-known set of local conserved charges.

  6. Quasilocal Conserved Operators in the Isotropic Heisenberg Spin-1/2 Chain

    NARCIS (Netherlands)

    Ilievski, E.; Medenjak, M.; Prosen, T.

    2015-01-01

    Composing higher auxiliary-spin transfer matrices and their derivatives, we construct a family of quasilocal conserved operators of isotropic Heisenberg spin-1/2 chain and rigorously establish their linear independence from the well-known set of local conserved charges.

  7. An indolocarbazole dimer as a new stereodynamic probe for chiral 1,2-diamines.

    Science.gov (United States)

    Jeon, Hae-Geun; Kim, Min Jun; Jeong, Kyu-Sung

    2014-08-01

    An indolocarbazole dimer that contains aldehyde groups at both ends was prepared by connecting two monomeric units through a rod-like 1,4-butadiynyl spacer. Upon mixing with chiral 1,2-diamines at room temperature, the dimer was in situ converted to the corresponding cyclic diimines in the presence of tetrabutylammonium acetate as a template. The resulting diimines fold to helical conformations of right-handed (P) or left-handed (M) orientations, depending on the absolute stereochemistries of chiral 1,2-diamines. The patterns and intensities of the CD spectra can be used to determine the absolute configurations and enantiomeric excesses of chiral 1,2-diamines.

  8. Electrical properties of Ba(Dy1/2Nb1/2)O3 ceramic

    Science.gov (United States)

    Nath, K. Amar; Chandra, K. P.; Dubey, K.; Prasad, K.

    2016-05-01

    Polycrystalline Ba(Dy1/2Nb1/2)O3 was prepared using a high-temperature solid-state reaction method. X-ray diffraction analysis indicated the formation of a single-phase cubic structure having space group Pm3m. AC impedance plots as a function of frequency at different temperatures were used to analyse the electrical behaviour of the sample, which indicated the negative temperature coefficient of resistance character. Complex impedance analysis targeted non-Debye type dielectric relaxation. Frequency dependent ac conductivity data obeyed Jonscher's power law. The apparent activation energy was estimated to be 0.97 eV at 1 kHz.

  9. Sandwiched trilayer of Bethe lattices in the form of spin-(1/2,1,1/2)

    Energy Technology Data Exchange (ETDEWEB)

    Albayrak, Erhan, E-mail: albayrak@erciyes.edu.t [Erciyes University, Department of Physics, 38039 Kayseri (Turkey); Aker, Aynur [Erciyes University, Department of Physics, 38039 Kayseri (Turkey)

    2010-11-15

    The sandwiched trilayer of Bethe lattices in the form of the spins with spin-(1/2,1,1/2) Ising model is studied in terms of the recursion relations with either ferromagnetic or antiferromagnetic type bilinear interactions between the nearest-neighbor (NN) spins. The ground-state (GS) phase diagrams are obtained and it was found that the model presents six different GS phase configurations. In order to obtain the phase diagrams, the thermal variations of the order-parameter, spin-spin correlation functions and free energy are analyzed and different topological phase diagrams are obtained. It was found that the system exhibits different critical behaviors such as, second- and first-order phase transitions, tricritical and bicritical points for the values of the coordination numbers q=3,4 and 6.

  10. Structures and Properties of 1,2,3-Triazoles and 1,2,4-Triazoles

    Institute of Scientific and Technical Information of China (English)

    LU Ya-Lin; GONG Xue-Dong; JU Xue-Hai; JI Guang-Fu; XIAO He-Ming

    2006-01-01

    In this paper, the fully optimized molecular geometries and electronic structures of six 1,2,3- and 1,2,4-triazoles were calculated using density functional theory B3LYP/6-311G** method. The salvation energies were obtained by SCRF in THF. The results show that the total energies of F are the lowest both in gas and liquid phases, and the order of thermodynamic stabilities of the title compounds is F>D>C>B>E>A. Their frontier orbital energy gaps and electron delocalization also support that F is the most stable. All the computed conclusions are in good agreement with the experiments. Vibrational frequencies of the title compounds were computed. The thermodynamic properties and their temperature curves of six compounds were obtained by using the statistical thermodynamic method with the temperature ranging from 200 to 1000 K.

  11. 李维汉对统战学学科建设的历史贡献及当代意义%The Historical Contribution and Contemporary Significance of Li Wei-han's Discipline Construction Thoughts for the United Front Subject

    Institute of Scientific and Technical Information of China (English)

    龚继民

    2012-01-01

    This paper discusses on Li Wei-han's historical contributions for the united front subject,which basically includes: his thought that united front is a science reveals the theoretical and political research of the united front must follow the rules,which provided theoretical and thought preparation for construction of united front subject.He was good at finding and grasping the theory thinking ability of the united front theory's growth pole,promoted the in-depth and wide researches for the united front theory,and laid a foundation for the future construction of united front subject.At present,the discipline construction for the united front subject is still an important task of workers in the united front theory research and teaching.To construct the united front theory system,and strengthen the construction of the subject has still a long way to go.%本文探讨李维汉对统一战线学学科建设的历史贡献,主要有:他关于"统一战线是一门科学"的有关思想,揭示了统一战线理论政策研究必须遵循的规律,为开启统一战线学学科建设作了理论上思想上的准备。他善于发现和把握统一战线理论增长点的理论思维能力,推动了深入、广泛地开展统一战线理论研究,为以后提出创立统战学学科建设打下了基础。当前,统战学学科建设依然是摆在广大统一战线理论科研和教学工作者面前的一项重要任务。构建统战学理论体系,加强统战学学科建设依然任重道远。

  12. Flexible microscaffold facilitating the in vitro construction of different cellular constructs

    National Research Council Canada - National Science Library

    Chumtong, Puwanan; Kojima, Masaru; Horade, Mitsuhiro; Ohara, Kenichi; Kamiyama, Kazuto; Mae, Yasushi; Akiyama, Yoshikatsu; Yamato, Masayuki; Arai, Tatsuo

    2014-01-01

    This paper presents a flexible microscaffold to facilitate the fabrication of different cellular constructs which could be used as the building units for the construction of a larger tissue with a complex structure...

  13. Total Synthesis of (R, R, R)-gamma-Tocopherol through Cu-Catalyzed Asymmetric 1,2-Addition

    NARCIS (Netherlands)

    Wu, Zhongtao; Harutyunyan, Syuzanna R.; Minnaard, Adriaan J.

    2014-01-01

    Based on the asymmetric copper-catalyzed 1,2-addition of Grignard reagents to ketones, (R,R,R)--tocopherol has been synthesized in 36% yield over 12 steps (longest linear sequence). The chiral center in the chroman ring was constructed with 73% ee by the 1,2-addition of a phytol-derived Grignard

  14. 农垦团场单位体制及其公共产品供给途径分析%Analysis of Unit System of Xinjiang Production and Construction Corps and Its Ways of Supply of Public Goods

    Institute of Scientific and Technical Information of China (English)

    韦统义; 宋瀛; 梁军疆

    2015-01-01

    The Xinjiang Production and Construction Corps is a social and economic organization with the basic function of cultivating and guarding the border areas.Its basic organization structure is functioning as a government body in the upper levels and as enterprises in the bottom levels,and Nongken farms are grassroots business units of the corps.Based on the background of planned economy and the special historical period,the Corps formed a u-nit public goods supply system.In the national reform of non-unit public goods supply,the Nongken farms supply system turns an inverse tendency,resulting in heavy social cost and anomalous enterprise management.In the in-novation of Nongken farms public goods supply system we must clarify the responsibility of the government,the historical path of “unit system”and the principle of market-oriented “non-unit”reform,thus to build a three-rail integrated supply system with the government public finance as the main body,Nongken farms operating surplus as a supplement,combined with market supply (especially from PPP supply mode).%新疆生产建设兵团是以屯垦戍边为基本职能的经济社会组织,上政下企是其基本组织结构,农垦团场是兵团下属的基层企业单位。基于计划经济的背景和当时特殊的历史背景,农垦团场形成了单位制公共产品供给体制。在国家公共产品供给非单位化的改革中,农垦团场公共产品供给体制具有“逆非单位化”倾向,造成农垦团场社会成本沉重,企业经营失范。农垦团场公共产品供给体制创新路径必须明确政府责任、“单位制”历史路径以及“非单位化”的市场化改革原则,构建以政府公共财政为主体、农垦团场经营剩余为补充、市场化供给(特别是借鉴 PPP 供给模式)相结合的“三轨制”的供给路径。

  15. 30 CFR 7.67 - Construction test.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Construction test. 7.67 Section 7.67 Mineral... MINING PRODUCTS TESTING BY APPLICANT OR THIRD PARTY Multiple-Shot Blasting Units § 7.67 Construction test. The constuction test is to be performed on the blasting unit subsequent to the output energy test...

  16. 图形处理器上CSB+-树索引的并行构建算法%Parallel Algorithm to Construct CSB+-Tree Indexing on Graphic Processing Unit

    Institute of Scientific and Technical Information of China (English)

    刘勇; 奚建清; 黄东平; 贾连印; 苗德成

    2014-01-01

    In order to improve the operation efficiency of cache sensitive B +-tree (CSB +-tree)indexing,this pa-per deals with the parallel construction and query performance of CSB +-tree on graphic processing unit (GPU).In the investigation,first,the mapping relationship between each key in internal nodes and the corresponding leaf node of the index tree is analyzed,a lock-free parallel algorithm that once for all builds the CSB +-tree internal node keys is proposed,and the index tree is constructed at the maximum parallel speed.Moreover,dynamic arrays su-pporting the arbitrary expansion of CSB +-tree index data on GPU are designed to implement the dynamic allocation of memory space on GPU,and padding bits are added to the boundary of the internal nodes to reduce the number of branches,thus improving the query efficiency of CSB +-tree.Experimental results indicate that the proposed algo-rithm is 31.0 and 1.4 times faster respectively than the parallel algorithms based on single node and tree layer.%为提高缓存敏感CSB +-树索引的操作效率,在图形处理器(GPU)上研究CSB +-树的并行构建和查询性能.通过分析索引树内部节点的每一键与对应叶子节点的映射关系,提出了一种一次性并行构建CSB +-树所有内部节点键值的无锁并行算法,以最大并行度来快速构建索引树.该算法通过设计GPU平台上支持CSB +-树的索引数据任意伸缩的动态数组来解决GPU上不能动态分配显存空间的问题,通过在索引内部节点的边界增加填充位来减少线程块的线程分支数,从而提高CSB +-树的查询效率.实验结果表明,文中所提算法的运行时间比基于单个节点和基于树层的并行算法分别提高了31.0和1.4倍.

  17. Layout Construction

    DEFF Research Database (Denmark)

    Frandsen, Gudmund Skovbjerg; Palsberg, Jens; Schmidt, Erik Meineche

    We design a system for generating newspaper layout proposals. The input to the system consists of editorial information (text, pictures, etc) and style information (non-editorial information that specifies the aesthetic appearance of a layout). We consider the automation of layout construction...

  18. Construction work

    CERN Multimedia

    2004-01-01

    Construction work on building 179 will start on the 16th February 2004 and continue until November 2004. The road between buildings 179 and 158 will temporarily become a one way street from Route Democrite towards building 7. The parking places between buildings 179 and 7 will become obsolete. The ISOLDE collaboration would like to apologize for any inconveniences.

  19. Layout Construction

    DEFF Research Database (Denmark)

    Frandsen, Gudmund Skovbjerg; Palsberg, Jens; Schmidt, Erik Meineche

    We design a system for generating newspaper layout proposals. The input to the system consists of editorial information (text, pictures, etc) and style information (non-editorial information that specifies the aesthetic appearance of a layout). We consider the automation of layout construction...

  20. 因果(鱼刺)图分析法在安全预评价中的应用%Causality (Fishbone) Diagram Analysis in the Pre-assessment Evaluation Unit Construction Project Safety Management Application

    Institute of Scientific and Technical Information of China (English)

    张秀华

    2014-01-01

    In the pre-construction project evaluation process ,safety management is evaluated as an independent unit .In selecting evaluation methods , there are practical difficulties in application security check-list method , due to feasibility stage project preparation period belong ,institutional settings is still in the planning stage ,there is no substantive progress .So Causality (Fishbone) diagram analysis can describe clearly the cause and result of the accident posed by complex causality , builders understand easily the relationship between the accident and take appropriate preventive measures , more appropriate than a checklist .%在建设项目预评价过程中,安全管理一般作为一个独立的单元进行评价;在评价方法的选择上,应用安全检查表法存在现实困难,因可行性论证阶段属于项目的筹建期,机构设置尚处于规划阶段,没有实质性进展。所以说应用因果分析法能把产生事故的原因及造成的结果所构成错综复杂的因果关系描述清楚,更便于建设者了解事故发生的因果关系,采取相应的防范措施,因此比检查表更适宜。

  1. Construction Grammars: Towards a Pedagogical Model

    Science.gov (United States)

    Holme, Randal

    2010-01-01

    "Constructions" are the central unit of grammatical analysis in cognitive linguistics. In formal linguistics "construction" referred to forms that were projected from lexical items rather than from an autonomous syntax. Thus, an expression, "I danced the night away" requires an intransitive verb in a transitive construction provided "away" is…

  2. Construction Safety Forecast for ITER

    Energy Technology Data Exchange (ETDEWEB)

    cadwallader, lee charles

    2006-11-01

    The International Thermonuclear Experimental Reactor (ITER) project is poised to begin its construction activity. This paper gives an estimate of construction safety as if the experiment was being built in the United States. This estimate of construction injuries and potential fatalities serves as a useful forecast of what can be expected for construction of such a major facility in any country. These data should be considered by the ITER International Team as it plans for safety during the construction phase. Based on average U.S. construction rates, ITER may expect a lost workday case rate of < 4.0 and a fatality count of 0.5 to 0.9 persons per year.

  3. Crystalline 1H-1,2,3-triazol-5-ylidenes

    Energy Technology Data Exchange (ETDEWEB)

    Bertrand, Guy; Gulsado-Barrios, Gregorio; Bouffard, Jean; Donnadieu, Bruno

    2016-08-02

    The present invention provides novel and stable crystalline 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes. The present invention also provides methods of making 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes. The present invention also provides methods of using 1H-1,2,3 triazolium carbenes and metal complexes of 1H-1,2,3 triazolium carbenes in catalytic reactions.

  4. Resistance integrons: class 1, 2 and 3 integrons.

    Science.gov (United States)

    Deng, Yang; Bao, Xuerui; Ji, Lili; Chen, Lei; Liu, Junyan; Miao, Jian; Chen, Dingqiang; Bian, Huawei; Li, Yanmei; Yu, Guangchao

    2015-10-20

    As recently indiscriminate abuse of existing antibiotics in both clinical and veterinary treatment leads to proliferation of antibiotic resistance in microbes and poses a dilemma for the future treatment of such bacterial infection, antimicrobial resistance has been considered to be one of the currently leading concerns in global public health, and reported to widely spread and extended to a large variety of microorganisms. In China, as one of the currently worst areas for antibiotics abuse, the annual prescription of antibiotics, including both clinical and veterinary treatment, has approaching 140 gram per person and been roughly estimated to be 10 times higher than that in the United Kingdom, which is considered to be a potential area for the emergence of "Super Bugs". Based on the integrons surveillance in Guangzhou, China in the past decade, this review thus aimed at summarizing the role of integrons in the perspective of both clinical setting and environment, with the focus on the occurrence and prevalence of class 1, 2 and 3 integrons.

  5. Sandwich construction

    Science.gov (United States)

    Marshall, A.

    A form of composites known as structural sandwich construction is presented in terms of materials used, design details for solving edging and attachment problems, and charts of design material analysis. Sandwich construction is used in nearly all commercial airliners and helicopters, and military air and space vehicles, and it is shown that this method can stiffen a structure without causing a weight increase. The facing material can be made of 2024 or 7075 aluminum alloy, titanium, or stainless steel, and the core material can be wood or foam. The properties of paper honeycomb and various aluminum alloy honeycombs are presented. Factors pertaining to adhesive materials are discussed, including products given off during cure, bonding pressure, and adaptability. Design requirements and manufacturing specifications are resolved using numerous suggestions.

  6. Fireplace construction

    Energy Technology Data Exchange (ETDEWEB)

    Billmeyer, T.F.; Faehling, F.L.

    1979-05-08

    A prebuilt fireplace construction for installation in a building structure, such as a mobile home, is presented. The construction includes a firebox having an open side and a combustion gas outlet adapted to be placed in fluid communication with a flue. A transparent door is provided for substantially sealing the open side and a housing at least partially surrounds the firebox in close proximity thereto to define an air space therebetween. The air space has a relatively low inlet and a relatively high outlet. A conduit isolated from the air space is provided and is adapted to be placed in fluid communication with a source of outside air. The conduit opens into the firebox to provide combustion air. A baffle is interposed between the opening of the conduit into the firebox and the combustion area thereof.

  7. Study of hypercharge exchange processes 0{sup -}1/2+{yields}1{sup -} 1/2+; Estudio de procesos 0-1/2+{yields}1-1/2+ con intercambio de hipercarga

    Energy Technology Data Exchange (ETDEWEB)

    Albajar Molera, M. c.; Aguilar Beniter de Lugo, M.

    1981-07-01

    In this work we present a formalism for the reconstruction of the transitivity amplitudes governing the processes of the type 0-1/2+{yields}1-1/2+. The formalism uses the information contained in the decay angular correlations and takes into account the existence of mixed spin configurations in the final state 0-1/2+{yields}(0{down_arrow}, 1-)1/2+ (Author) 10 refs.

  8. Rh-Catalyzed Asymmetric Hydrogenation of 1,2-Dicyanoalkenes.

    Science.gov (United States)

    Li, Meina; Kong, Duanyang; Zi, Guofu; Hou, Guohua

    2017-01-06

    A highly efficient enantioselective hydrogenation of 1,2-dicyanoalkenes catalyzed by the complex of rhodium and f-spiroPhos has been developed. A series of 1,2-dicyanoalkenes were successfully hydrogenated to the corresponding chiral 1,2-dicyanoalkanes under mild conditions with excellent enantioselectivities (up to 98% ee). This methodology provides efficient access to the asymmetric synthesis of chiral diamines.

  9. 5 CFR 1.2 - Extent of the competitive service.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Extent of the competitive service. 1.2 Section 1.2 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE RULES COVERAGE AND DEFINITIONS (RULE I) § 1.2 Extent of the competitive service. The competitive service shall include: (a) All...

  10. 43 CFR § 2812.1-2 - Contents.

    Science.gov (United States)

    2015-10-01

    ... 43 Public Lands: Interior 2 2015-10-01 2015-10-01 false Contents. § 2812.1-2 Section § 2812.1-2 Public Lands: Interior Regulations Relating to Public Lands (Continued) BUREAU OF LAND MANAGEMENT... Coos Bay Revested Lands § 2812.1-2 Contents. (a) An individual applicant and each member of any...

  11. A Two-parameter bicovariant differential calculus on the (1 + 2)-dimensional q-superspace

    Science.gov (United States)

    Yasar, Ergün

    2016-01-01

    We construct a two-parameter bicovariant differential calculus on ℛq1/2 with the help of the covariance point of view using the Hopf algebra structure of ℛq1/2. To achieve this, we first use the consistency of calculus and the approach of R-matrix which satisfies both ungraded and graded Yang-Baxter equations. In particular, based on this differential calculus, we investigate Cartan-Maurer forms for this q-superspace. Finally, we obtain the quantum Lie superalgebra corresponding the Cartan-Maurer forms.

  12. Thermodynamics of Dimerization of Lithium Salts in 1,2 Dimethoxyethane.

    Science.gov (United States)

    1984-01-05

    conductance methods. LiBF4 , another electrolyte relevant to a battery construction, has now been investigated by the same methods in 1, Z-DME in order...dielectric and conduc- tance work have been described elsewhere [3 1. LiBF4 (Aldrich) was re- dried in vacuo (- 1 torr) at - 70 0 C overnight. 1, 2-DME has...imaginary part e ’ and e" of the complex permittivity = el-J e, plotted vs. the frequency-f for a representative concentration of LiBF4 in 1, 2-DME at 25 0

  13. Representations of the deformed U(su(2)) and U(osp(1,2)) algebras

    CERN Document Server

    Bonatsos, Dennis; Kolokotronis, P; Lenis, D; Bonatsos, Dennis

    1996-01-01

    The polynomial deformations of the Witten extensions of the U(su(2)) and U(osp(1,2)) algebras are three generator algebras with normal ordering, admitting a two generator subalgebra. The modules and the representations of these algebras are based on the construction of Verma modules, which are quotient modules, generated by ideals of the original algebra. This construction unifies a large number of the known algebras under the same scheme. The finite dimensional representations show new features such as the multiplicity of representations of the same dimensionality, or the existence of finite dimensional representations only for some dimensions.

  14. Module 11 Units 1-2巩固操练

    Institute of Scientific and Technical Information of China (English)

    徐勇士

    2016-01-01

    I.根据英语和汉语提示完成句子。每小题只能写出一个单词的适当形式,1. The year of high school is a time for hard work and also a time to r__2. At this time, you have to start thinking about the future and what you want to do after g___ 3. I am going to discuss some of the choices a____ to you and which jobs are best suited to you.4. When choosing a career, you should consider all the a____ of a job. 5. Meanwhile, those who are successful and famous have to deal with c___ media attention.

  15. 77 FR 12885 - Millstone Power Station, Units 1, 2 and 3, Dominion Nuclear Connecticut, Inc.; Exemption

    Science.gov (United States)

    2012-03-02

    ... Background Dominion Nuclear Connecticut, Inc. (DNC or the licensee) is the holder of Facility Operating... pursuant to 10 CFR 26.9, DNC, doing business as Dominion, requested an exemption from the requirements of... otherwise in the public interest. Therefore, the Commission hereby grants DNC an exemption from...

  16. 1,2 Migration in Carbenoid and Carbene Reactions

    Institute of Scientific and Technical Information of China (English)

    MA Ming; JIANG Nan; SHI Wei-Feng; WANG Jian-Bo

    2003-01-01

    @@ 1,2-Hydride, 1,2-alkyl and 1,2-aryl migrations are common in free carbene chemistry, and they are also fre quently encountered in the reactions of metal carbenes. In some cases, these migration reactions can compete with the typical reactions of metal carbenes, such as X-H (X = Si, C, O, N, S, etc. ) insertions and cyclopropanations. [1] The 1,2-migration also found synthetic application. An example is the SnCl2-promoted 1,2-hydride migration of α-diazo-β-hydroxy esters, known as Roskamp homologation, which leads to the formation of β-keto esters. [2

  17. Constructing Catalonia

    Directory of Open Access Journals (Sweden)

    Bill Philips

    2009-07-01

    Full Text Available Catalonia, in common with other nations, has long been concerned with the question of identity and difference. Its problematic relationship with Spain has led to an emphasis on differentiating itself from its larger neighbour (if we are to accept, as most Spaniards do not, that Catalonia is not Spain, a situation complicated by the loss of the Spanish colonies of Cuba and The Philippines in 1898, and the Spanish Civil War and subsequent dictatorship from 1936 to 1976. Beginning in the late nineteenth century, the construction of a Catalan identity followed a similar route to that taken by other European nations such as England, Ireland and, indeed, Spain, including an emphasis on rural values, activities and the countryside, and the conversion of specifically local traditions into national past times. It is only in the last ten years or so that this model of Catalan identity has been recognised for what it is – a model constructed and encouraged for and by specific nationalist political interests. Ironically, Catalonia’s identity abroad has also been constructed and manipulated for political purposes, but from quite a different perspective. Orwell’s /Homage to Catalonia/ (1938 narrates an extremely blinkered version of the Spanish Civil War which has achieved iconic status as a result of cold war politics. Subsequent portrayals of the Spanish Civil War – Valentine Cunningham’s /The Penguin Book of Spanish Civil War Verse/ (ed., Penguin, 1980, or Ken Loach’s 1995 film /Land and Freedom/ base their arguments unquestioningly on /Homage to Catalonia/, perpetuating a view of the nation’s recent history that is both reductive and inaccurate

  18. Word Criticality Analysis. MOS: 13E. Skill Level 1 & 2.

    Science.gov (United States)

    1981-09-01

    2-1M.,1 2-141, -5, aiSi 220, -4. 227, -1,*2 FREGUM1V -262.4 2-2!9, 1 2-258,1 2-256,3. 2-5922-41_2-5.12296 -243 2-7. 2-7,1-121 2-260.1 2-2it - 3,1 2...I5I 3-- 301 .. 4 ID TIV2-2203o 2-333,3145,1- -4 ILLUMIC 4 ~1-394.1-1. 4 INS3SIC1 **301.3 12, 23-2973- -4 0 cp 4 -lo 40- *4 sum6 3- 11,1 3- 10.1 2

  19. Synthesis and characterization of two novel coordination polymers based on the rigid 1H-1,2,3-triazole-4,5-dicarboxylic acid ligand

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Two novel three-dimensional (3-D) coordination polymers, [Pb(HTDA)]n (1) and [Co5(TDA)2(H2TDA)2(H2O)8]n (2) [H3TDA = 1H-1,2,3-triazole-4,5-dicarboxylic acid], have been prepared by hydrothermal reactions and characterized by elemental analysis, infrared spectroscopy and single-crystal X-ray diffraction. Compound 1 is constructed from rod-shaped secondary building units (SBUs) and exhibits a 3-D network with (410·65)(410·63·82) topology. Compound 2 is built up from ligands bridging three different cobalt ions and exhibits a 3-D network with (4·82)3(4·82·103) topology. In addition, the thermal stabilities of the two compounds, the photoluminescence properties of compound 1 and the magnetic properties of compound 2 have been studied.

  20. Approximate stress-energy tensor of the massless spin-1/2 field in Schwarzschild spacetime

    CERN Document Server

    Matyjasek, J

    2005-01-01

    The approximate stress-energy tensor of the conformally invariant massless spin-1/2 field in the Hartle-Hawking state in the Schwarzschild spacetime is constructed. It is shown that by solving the conservation equation in conformal space and utilizing the regularity conditions in a physical metric one obtains the stress-energy tensor that is in a good agreement with the numerical calculations. The back reaction of the quantized field upon the spacetime metric is briefly discussed.

  1. Algebraic cycles on the generic abelian fourfold with polarization of type (1,2,2,2)

    CERN Document Server

    Estrella, Russell Aarón Quiñones

    2009-01-01

    In this paper we construct a non-trivial element in the higher Griff{}iths group $Griff ^{3,2}$ for the generic abelian fourfold $A^4$ with polarization of type $(1,2,2,2)$. The key idea is to use that $A^4$ can be realized as a generalized Prym variety and for this reason contains in a natural way some curves i.e. dimension 1 cycles.

  2. 1,2-HOIQO — A Highly Versatile 1,2-HOPO Analog

    Science.gov (United States)

    Seitz, Michael; Pluth, Michael D.; Raymond, Kenneth N.

    2011-01-01

    A cyclic, bidentate hydroxamic acid binding unit based on an isoquinoline scaffold has been utilized for the synthesis of a hexadentate tripodal ligand based on the TREN backbone. This prototype for a new class of multidentate chelators forms mononuclear iron(III) complexes and one-dimensional coordination polymers with lanthanide(III) cations. The latter has been determined by single crystal X-ray analysis of the cerium species. The solid state structure in the monoclinic space group P21/c (C36H34CeN7O11, a=12.341(2)Å, b=26.649(4)Å, c=10.621(2)Å, α=γ=90°, β=96.753(3)°, V=3468.6(9)Å3, Z=4) exhibits a trigonal-dodecahedral environment around the cerium cation. The proof of concept for the versatility of the new scaffold has been shown by the modification of the crucial precursor 3-carboxyisocoumarin through electrophilic aromatic substitutions to yield the corresponding chlorosulfonated and nitrated analogs. PMID:17279805

  3. 1,2-HOIQO--a highly versatile 1,2-HOPO analogue.

    Science.gov (United States)

    Seitz, Michael; Pluth, Michael D; Raymond, Kenneth N

    2007-01-22

    A cyclic, bidentate hydroxamic acid binding unit based on an isoquinoline scaffold has been utilized for the synthesis of a hexadentate tripodal ligand based on the TREN backbone. This prototype for a new class of multidentate chelators forms mononuclear iron(III) complexes and one-dimensional coordination polymers with lanthanide(III) cations. The latter has been determined by single-crystal X-ray analysis of the cerium species. The solid-state structure in the monoclinic space group P2(1)/c (C(36)H(34)CeN(7)O(11), a = 12.341(2) A, b = 26.649(4) A, c = 10.621(2) A, alpha = gamma = 90 degrees, beta = 96.753(3) degrees, V = 3468.6(9) A3, Z = 4) exhibits a trigonal-dodecahedral environment around the cerium cation. The proof of concept for the versatility of the new scaffold has been shown by the modification of the crucial precursor 3-carboxyisocoumarin through electrophilic aromatic substitutions to yield the corresponding chlorosulfonated and nitrated analogues.

  4. Design of the ERIS calibration unit

    Science.gov (United States)

    Dolci, Mauro; Valentini, Angelo; Di Rico, Gianluca; Esposito, Simone; Ferruzzi, Debora; Riccardi, Armando; Spanò, Paolo; Antichi, Jacopo

    2016-08-01

    The Enhanced Resolution Imager and Spectrograph (ERIS) is a new-generation instrument for the Cassegrain focus of the ESO UT4/VLT, aimed at performing AO-assisted imaging and medium resolution spectroscopy in the 1-5 micron wavelength range. ERIS consists of the 1-5 micron imaging camera NIX, the 1-2.5 micron integral field spectrograph SPIFFIER (a modified version of SPIFFI, currently operating on SINFONI), the AO module and the internal Calibration Unit (ERIS CU). The purpose of this unit is to provide facilities to calibrate the scientific instruments in the 1-2.5 micron and to perform troubleshooting and periodic maintenance tests of the AO module (e.g. NGS and LGS WFS internal calibrations and functionalities, ERIS differential flexures) in the 0.5 - 1 μm range. The ERIS CU must therefore be designed in order to provide, over the full 0.5 - 2.5 μm range, the following capabilities: 1) illumination of both the telescope focal plane and the telescope pupil with a high-degree of uniformity; 2) artificial point-like and extended sources onto the telescope focal plane, with high accuracy in both positioning and FWHM; 3) wavelength calibration; 4) high stability of these characteristics. In this paper the design of the ERIS CU, and the solutions adopted to fulfill all these requirements, is described. The ERIS CU construction is foreseen to start at the end of 2016.

  5. Fireplace construction

    Energy Technology Data Exchange (ETDEWEB)

    Billmeyer, T.F.

    1978-10-03

    A prebuilt fireplace construction for installation in a building structure includes a firebox having an open forward side and an outlet for combustion gases and a housing at least partially surrounding the firebox with the combustion gas outlet extending through the top of the housing. A rotatable damper is disposed within the housing and is controlled externally by a rotatable shaft extending forwardly through the housing which is engaged by an external actuator operable from the front of the fireplace. An inlet conduit for combustion air is built into the housing for the fireplace beneath the level of the firebox for supply of combustion air to the firebox in the event doors are later added to close off the firebox.

  6. Constructing Knowledge

    Science.gov (United States)

    Blanton, Patricia

    2003-02-01

    Schools are expected to lay the foundation upon which knowledge can be built and equip students with the tools necessary to accomplish the construction. The role of the teacher in this building process is crucial to the type of structure the student can build. Whether you call it constructivism, discussion teaching, project-based learning, inquiry learning, or any of the other names given to the instructional strategies being suggested by education researchers, the key is getting students to become active participants in the process. While some students may be able to learn from eloquently delivered lectures and dynamic demonstrations, the majority of students cannot effectively retain and apply ideas communicated in this manner.

  7. Word Criticality Analysis MOS: 15D. Skill Levels 1 & 2.

    Science.gov (United States)

    1981-09-01

    0p -o1 2-91D1 2-290,1 -2- 27002 -2-245,1 2-12101 apcisoti 2-140,2 "P nSNPG2-155,1 ’ 2 PL~1%UNOI:S 2:146,#2 I POSITLIW 2 264,1I __...POSS IALr . ___2*2...UUALLY _ 2-224,1 2 T1,1 - 91,2 2- 92.2 2- 91.1 3 15.1 A- 17s1 3- 16#1 3- 44.2 1- 7201 3- ISO [ 1- I0,i Z TLZ - 94,1 3- 14,1 3- 1.. 3- 12.1 3- 11.1 2- 90,1

  8. Word Criticality Analysis. MOS: 44E. Skill Levels 1 & 2.

    Science.gov (United States)

    1981-09-01

    78.4 2- 64,1 I GLgKP(Ix 2- 62,1 2- 58,1 1 ’ ’. I fMbs WIUf,D LIaT BY 04GE tfTF .PV. 107? PIGE . 1 GE 2- 79,1 I G1M& 2- 32,1 G(1N)EM2- 17,1 2- 137,1 2...0 2 0 n~ 1 . i , - I - I C5MS WIRD LIST BY PIGE 1Yj’© p𔃻L’ 1177 P.GP 6 j 1 EltL 2- 10,1 2- 18,1 2- 12,1 N1 MI IFV 2- 12.1 2- 66 l 2- 57.2 2- 26,1

  9. Discussion on How to Strengthen the Project Management and Improve Engineering Benefits for Construction Unit%浅谈建设单位如何加强工程管理提高工程效益

    Institute of Scientific and Technical Information of China (English)

    董志华

    2012-01-01

    Engineering management level directly affects the benefit of the project, and then affects the overall efficiency of the construction enterprise. This article discusses in detail the construction enterprise in the setting of institution, system construction, team construction, coordination function, project information management and experience summary, to strengthen project management.%工程管理工作水平直接影响工程效益,进而影响建设单位的整体效益.文章详细论述建设单位在机构职能设置、制度流程建设、队伍建设、协调发挥作用、工程信息管理以及经验总结等方面加强工程管理工作的相关思考.

  10. Substituted 4-hydroxy-1,2,3-triazoles

    DEFF Research Database (Denmark)

    Pippione, Agnese C.; Dosio, Franco; Ducime, Alex;

    2015-01-01

    Bioisosterism and scaffold hopping are two widely used approaches in medicinal chemistry for the purpose of lead optimization. The study highlights the physicochemical properties of the 4-hydroxy-1,2,3-triazole scaffold, a less investigated heterocyclic system. Synthetic strategies to obtain diff......, with the 4-hydroxy-1,2,3-triazole scaffold. The 4-hydroxy-1,2,3-triazole system appears to be useful and versatile in drug design....

  11. 2~(1/2)/2是分数吗?

    Institute of Scientific and Technical Information of China (English)

    李厚明

    2003-01-01

    同学们遇到一道题: 2~(1/2)/2________(填是或不是)分数。同学们争论不休,有的认为2~(1/2)/2是分数,有的认为2~(1/2)/2不是分数,各执一辞,意见不能统一。那么,2~(1/2)/2究竟是不是分数呢? 下面从两方面加以辨析。

  12. Impedance and a.c. conductivity studies of Ba(Pr1/2Nb1/2)O3 ceramic

    Indian Academy of Sciences (India)

    K Amar Nath; K Prasad; K P Chandra; A R Kulkarni

    2013-08-01

    Impedance and electrical conduction studies of Ba(Pr1/2Nb1/2)O3 ceramic prepared through conventional ceramic fabrication technique are presented. The crystal symmetry, space group and unit cell dimensions were estimated using Rietveld analysis. X-ray diffraction analysis indicated the formation of a single-phase cubic structure with space group, $\\bar{3}$. EDAX and SEM studies were carried out to study the quality and purity of compound. To find a correlation between the response of the real system and idealized model circuit composed of discrete electrical components, the model fittings were presented using impedance data. Complex impedance as well as electric modulus analyses suggested dielectric relaxation to be of non-Debye type and negative temperature coefficient of resistance character. The correlated barrier hopping model was employed to successfully explain the mechanism of charge transport in Ba(Pr1/2Nb1/2)O3. The a.c. conductivity data were used to evaluate density of states at Fermi level, minimum hopping length and apparent activation energy.

  13. Measurement of the scalar polarizability within the 5P1/2-6S1/2, 410 nm transition in atomic indium

    CERN Document Server

    Ranjit, G; Lorenzo, A T; Schneider, A E; Majumder, P K

    2013-01-01

    We have completed a new measurement of the Stark shift in 115In within the 410 nm 5P1/2- 6S1/2 transition. We measure the Stark shift constant to be kS= - 122.92(33)kHz/(kV/cm)^2, corresponding to a difference in the 6S1/2 and 5P1/2 state polarizabilities, \\Delta\\alpha_0, of 1000.2 (2.7) a.u.(in atomic units). This result is a factor of 30 more precise than previous measurements and is in excellent agreement with a new theoretical value based on an ab initio calculation of the wave functions in this three-valence-electron system. The measurement was performed in an indium atomic beam apparatus, used a GaN laser diode system, and exploited an FM spectroscopy technique to extract laser transmission spectra under conditions where our interaction region optical depth was typically less than 10^-3.

  14. 4,4′-Bipyridine–3-(thiophen-3-ylacrylic acid (1/2

    Directory of Open Access Journals (Sweden)

    Malaichamy Sathiyendiran

    2011-10-01

    Full Text Available In the title 1/2 adduct, C10H8N2·2C7H6O2S, the dihedral angle between the pyridine rings is 18.41 (11°. In the thiopheneacrylic acid molecules, the dihedral angles between the respective thiophene and acrylic acid units are 5.52 (17° and 23.92 (9°. In the crystal, the components are linked via O—H...N hydrogen-bonding interactions, forming units of two 3-thiopheneacrylic acid molecules and one 4,4′-bipyridine molecule.

  15. Efficient Syntheses of 1,2,3-Triazoloamide Derivatives Using Solid- and Solution-Phase Synthetic Approaches

    Directory of Open Access Journals (Sweden)

    Doohyun Lee

    2015-11-01

    Full Text Available Efficient synthetic routes for the preparation of secondary and tertiary 1,2,3-triazoloamide derivatives were developed. A secondary α-1,2,3-triazoloamide library was constructed and expanded by a previously developed solid-phase synthetic route and a tertiary 1,2,3-triazoloamide library was constructed by a parallel solution-phase synthetic route. The synthetic routes rely on amide formation with secondary amines and chloro-acid chlorides; SN2 reaction with sodium azide; and the selective [3 + 2] Hüisgen cycloaddition with appropriate terminal alkynes. The target secondary and tertiary 1,2,3-triazoloamide derivatives were obtained with three-diversity points in excellent overall yields and purities using the reported solid- and solution-phase synthetic routes, respectively.

  16. Mobile measurement setup according to IEC 62220-1-2 for DQE determination on digital mammography systems

    Science.gov (United States)

    Greiter, Matthias B.; Hoeschen, Christoph

    2010-04-01

    The international standard IEC 62220-1-2 defines the measurement procedure for determination of the detective quantum efficiency (DQE) of digital x-ray imaging devices used in mammography. A mobile setup complying to this standard and adaptable to most current systems was constructed in the Helmholtz Zentrum München to allow for an objective technical comparison of current full field digital mammography units employed in mammography screening in Germany. This article demonstrates the setup's capabilities with a focus on the measurement uncertainties of all quantities contributing to DQE measurements. Evaluation of uncertainties encompasses results from measurements on a Sectra Microdose Mammography in clinical use, as well as on a prototype of a Fujifilm Amulet system at various radiation qualities. Both systems have a high spatial resolution of 50 μm × 50 μm. The modulation transfer function (MTF), noise power spectrum (NPS) and DQE of the Sectra MDM are presented in comparison to results previously published by other authors.

  17. Di-ionizable p-tert-butylcalix[4]arene-1,2-crown-3 ligands in cone and 1,2-alternate conformations: synthesis and metal ion extraction.

    Science.gov (United States)

    Zhang, Dongmei; Cao, Xiaodan; Purkiss, David W; Bartsch, Richard A

    2007-04-21

    Novel di-ionizable p-tert-butylcalix[4]arene-1,2-crown-3 ligands in cone and 1,2-alternate conformations were prepared as potential metal ion extractants. Selective bridging of proximal hydroxyl groups of the calix[4]arene platform by a crown-3 polyether unit was achieved under Mitsunobu reaction conditions. In addition to the carboxylic acid group, the acidity tunable N-(X)sulfonyl oxyacetamide functions [OCH(2)C(O)NHSO(2)X] with X group variation from methyl to phenyl to p-nitrophenyl to trifluomethyl were used as the proton-ionizable groups. Conformations and regioselectivities of the new ligands were established by (1)H and (13)C NMR spectroscopy. Competitive solvent extractions of alkali metal cations and of alkaline earth metal cations from aqueous solutions into chloroform were performed, as were single species extractions of lead(ii) and mercury(ii).

  18. Toward a constructive physics

    Energy Technology Data Exchange (ETDEWEB)

    Noyes, H.P.; Gefwert, C.; Manthey, M.J.

    1983-06-01

    We argue that the discretization of physics which has occurred thanks to the advent of quantum mechanics has replaced the continuum standards of time, length and mass which brought physics to maturity by counting. The (arbitrary in the sense of conventional dimensional analysis) standards have been replaced by three dimensional constants: the limiting velocity c, the unit of action h, and either a reference mass (eg m/sub p/) or a coupling constant (eg G related to the mass scale by hc/(2..pi..Gm/sub p//sup 2/) approx. = 1.7 x 10/sup 38/). Once these physical and experimental reference standards are accepted, the conventional approach is to connect physics to mathematics by means of dimensionless ratios. But these standards now rest on counting rather than ratios, and allow us to think of a fourth dimensionless mathematical concept, which is counting integers. According to constructive mathematics, counting has to be understood before engaging in the practice of mathematics in order to avoid redundancy. In its strict form constructive mathematics allows no completed infinities, and must provide finite algorithms for the computation of any acceptable concept. This finite requirement in constructive mathematics is in keeping with the practice of physics when that practice is restricted to hypotheses which are testable in a finite time. In this paper we attempt to outline a program for physics which will meet these rigid criteria while preserving, in so far as possible, the successes that conventional physics has already achieved.

  19. DEVELOPING EXPERT DECISION SUPPORT SYSTEM WTH VP-EXPERT AND LOTUS 1-2-3 IN RE -BLENDING BY USE

    Institute of Scientific and Technical Information of China (English)

    舒航; 杨鹏

    1994-01-01

    An expert decision support system (EDSS) for multi-bins balance and control of ore quality in production ore bins of some large-scale open pit iron mine in China has been developed by expert system tool software VP-EXPERT and integration software LOTUS 1-2-3 in this paper. It is known by practicing that a medium-scale EDSS constructed on microcomputer is completely feasible by means of VP-EXEPERT to construct knowledge base system (KBS), LOTUS 1-2-3 to make decision support system (DSS) and link them with BAT.

  20. Genetics and biochemistry of 1,2-dichloroethane degradation

    NARCIS (Netherlands)

    Janssen, Dick B.; Ploeg, Jan R. van der; Pries, Frens

    1994-01-01

    Dichloroethane (1,2-DCE) is a synthetic compound that is not known to be formed naturally. Nevertheless, several pure microbial cultures are able to use it as a sole carbon source for growth. Degradation of 1,2-DCE proceeds via 2-chloroethanol, chloroacetaldehyde and chloroacetate to glycolate. The

  1. Genetics and biochemistry of 1,2-dichloroethane degradation

    NARCIS (Netherlands)

    Janssen, Dick B.; Ploeg, Jan R. van der; Pries, Frens

    1994-01-01

    Dichloroethane (1,2-DCE) is a synthetic compound that is not known to be formed naturally. Nevertheless, several pure microbial cultures are able to use it as a sole carbon source for growth. Degradation of 1,2-DCE proceeds via 2-chloroethanol, chloroacetaldehyde and chloroacetate to glycolate. The

  2. An efficient synthesis of substituted benzene-1,2-dicarboxaldehydes

    Institute of Scientific and Technical Information of China (English)

    ZHU Peter C; WANG Dei-Haw; LU Kaitao; MANI Neelakandha

    2007-01-01

    Substituted-benzene-1,2-dicarbaldehydes were synthesized by the reaction of substituted-1,2-bis (dibromomethyl) benzenes with fuming sulfuric acid, followed by hydrolysis, The yields were significantly improved by introducing solid sodium bicarbonate into the reaction mixture before hydrolysis and workup.

  3. An efficient synthesis of substituted benzene-1,2-dicarboxaldehydes

    Institute of Scientific and Technical Information of China (English)

    ZHU; Peter; C; WANG; Der-Haw; MANI; Neelakandha

    2007-01-01

    Substituted-benzene-1,2-dicarbaldehydes were synthesized by the reaction of substituted-1,2-bis(dibromomethyl) benzenes with fuming sulfuric acid,followed by hydrolysis. The yields were signifi-cantly improved by introducing solid sodium bicarbonate into the reaction mixture before hydrolysis and workup.

  4. 1,2-Selective Hydrosilylation of Conjugated Dienes

    OpenAIRE

    Parker, Sarah Elizabeth

    2014-01-01

    Selective 1,2-hydrosilylation of 1,3-dienes is a challenging problem to solve for transition metal catalysis. Butadiene, specifically, would be a useful substrate because 3-butenylsilane products have promise as superior coupling reagents for hybrid organic/inorganic materials synthesis. In this thesis, we describe the first selective 1,2-hydrosilylation of conjugated dienes, including butadiene.

  5. Dihydroxylation of 4-substituted 1,2-dioxines

    DEFF Research Database (Denmark)

    Robinson, Tony V; Pedersen, Daniel Sejer; Taylor, Dennis K;

    2009-01-01

    The synthesis of 2-C-branched erythritol derivatives, including the plant sugar (+/-)-2-C-methylerythritol 2, was achieved through a dihydroxylation/reduction sequence on a series of 4-substituted 1,2-dioxines 3. The asymmetric dihydroxylation of 1,2-dioxines was examined, providing access to opt...

  6. Crystal structure of 1-(2,4-dimethylphenyl-2-(4-trimethylsilyl-1H-1,2,3-triazol-1-ylethanone

    Directory of Open Access Journals (Sweden)

    G. B. Venkatesh

    2014-12-01

    Full Text Available The asymmetric unit of the title compound, C15H21N3OSi, contains two molecules with similar conformations (r.m.s. overlay fit for the 20 non-H atoms = 0.163 Å. The dihedral angles between the planes of the 1,2,3-triazole and 2,4-dimethylbenzene rings are 27.0 (3 and 19.5 (3°. In the crystal, molecules are linked by very weak C—H...O and C—H...N hydrogen bonds to generate [100] chains. The chains are cross-linked by C—H...π interactions.

  7. Systematically engineering Escherichia coli for enhanced production of 1,2-propanediol and 1-propanol.

    Science.gov (United States)

    Jain, Rachit; Sun, Xinxiao; Yuan, Qipeng; Yan, Yajun

    2015-06-19

    The biological production of high value commodity 1,2-propanediol has been established by engineering the glycolysis pathway. However, the simultaneous achievement of high titer and high yield has not been reported yet, as all efforts in increasing the titer have resulted in low yields. In this work, we overcome this limitation by employing an optimal minimal set of enzymes, channeling the carbon flux into the 1,2-propanediol pathway, increasing NADH availability, and improving the anaerobic growth of the engineered Escherichia coli strain by developing a cell adaptation method. These efforts lead to 1,2-propanediol production at a titer of 5.13 g/L with a yield of 0.48 g/g glucose in 20 mL shake flask studies. On this basis, we pursue the enhancement of 1-propanol production from the 1,2-propanediol platform. By constructing a fusion diol dehydratase and developing a dual strain process, we achieve a 1-propanol titer of 2.91 g/L in 20 mL shake flask studies. To summarize, we report the production of 1,2-propanediol at enhanced titer and enhanced yield simultaneously in E. coli for the first time. Furthermore, we establish an efficient system for the production of biofuel 1-propanol biologically.

  8. Synthesis, spectral characterization and antihaemostatic activity of 1,2,4-triazoles incorporating 1,2,4-triazine rings

    Indian Academy of Sciences (India)

    Ravindra R Kamble; Belgur S Sudha

    2006-03-01

    A simple and high yielding method for the integration of a 1,2,4-triazole ring with 1,2,4-triazine- 5-one (4a-j) has been developed starting from 3-arylsydnones (1a-d). The structures were proved by their spectral data and screened for antihaemostatic activity.

  9. The LDA-1/2 technique: Recent developments

    Science.gov (United States)

    Ferreira, Luiz G.; Pelá, Ronaldo R.; Teles, Lara K.; Marques, Marcelo; Ribeiro, Mauro, Jr.; Furthmüller, Jürgen

    2013-12-01

    This paper is a review of the LDA(GGA)-1/2 method for band calculation. We review the many applications of the method: band gaps, semiconductor interfaces, semiconductor alloys. The number of applications where the method fails is minimal. Leading to results with a precision comparable to Hedin's GW method, LDA-1/2 has the advantage of being orders of magnitude faster. The paper begins by a short theoretical review in which we try not repeat what is already published. Then we present some results that are scattered in the literature. We find that LDA(GGA)-1/2 is the recommended method for excited state energy calculations.

  10. 29 CFR 785.7 - Judicial construction.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Judicial construction. 785.7 Section 785.7 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR STATEMENTS OF GENERAL... Hours Worked § 785.7 Judicial construction. The United States Supreme Court originally stated...

  11. 32 CFR 751.4 - Construction.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 5 2010-07-01 2010-07-01 false Construction. 751.4 Section 751.4 National Defense Department of Defense (Continued) DEPARTMENT OF THE NAVY CLAIMS PERSONNEL CLAIMS REGULATIONS Claims Against the United States § 751.4 Construction. The provisions of this section and the...

  12. 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.

  13. 40 CFR 40.145-3 - Projects involving construction.

    Science.gov (United States)

    2010-07-01

    ... adequate engineering supervision and inspection for the project to insure that the construction conforms... the United States, or any authorized representative shall have access to any books, documents,...

  14. Fernald Silos 1 & 2 Accelerated Waste Retrieval Program Surrogate Development

    Energy Technology Data Exchange (ETDEWEB)

    Mullen, O Dennis; Erian, Fadel F.

    2002-09-01

    Whitepaper describing the rationale and methodology for development of surrogates to be used for testing retrieval and processing systems for the DOE Fernald Silos 1 & 2 wastes. One significant updating/revision is expected.

  15. Global Precipitation Climatology Project (GPCP) - Daily, Version 1.2

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Global Precipitation Climatology Project (GPCP) comprises a total of 27 products. The Version 1.2 Daily product covers the period October 1998 to the present,...

  16. 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.

  17. PSCz-1.2 Jy Comparison: A Spherical Harmonics Approach

    OpenAIRE

    1999-01-01

    We perform a detailed comparison of the IRAS PSCz and 1.2-Jy spherical harmonic coefficients of the density and velocity fields in redshift space. The monopole terms predicted from the two surveys show some differences. The mismatch between the velocity monopoles arises from faint sources and disappears when extracting a PSCz subsample of galaxies with fluxes larger than 1.2 Jy. The analysis of PSCz dipole moments confirms the same inconsistencies found by Davis, Nusser and Willick (1996) bet...

  18. 1,2,4-triazine derivatives: Synthesis and biological applications

    Directory of Open Access Journals (Sweden)

    Mohammad Arshad

    2014-04-01

    Full Text Available 1,2,4-Triazines are the six membered heterocyclic compounds possessing three nitrogen in its structure with general formula C3H3N3. 1,2,4-Triazines and its derivatives have been found to exhibit the variety of biological applications such as antifungal, anti-HIV, anticancer, antiinflammatory, analgesic and antihypertensive, cardiotonic, neuroleptic, nootropic, antihistaminergic, tuberculostatic, antiviral, anti-protozoal, estrogen receptor modulators, antimalarial, cyclin-dependent kinase inhibitors, antimicrobial and antiparasitic activities.

  19. Biodegradation of 1,2,3-trichloropropane through directed evolution and heterologous expression of a haloalkane dehalogenase gene

    NARCIS (Netherlands)

    Bosma, Tjibbe; Damborský, Jiří; Stucki, Gerhard; Janssen, Dick B.

    2002-01-01

    Using a combined strategy of random mutagenesis of haloalkane dehalogenase and genetic engineering of a chloropropanol-utilizing bacterium, we constructed an organism that is capable of growth on 1,2,3-trichloropropane (TCP). This highly toxic and recalcitrant compound is a waste product generated f

  20. Construction of an infectious cDNA clone of avian hepatitis E virus (avian HEV) recovered from a clinically healthy chicken in the United States and characterization of its pathogenicity in specific-pathogen-free chickens

    OpenAIRE

    Kwon, Hyuk Moo; LeRoith, Tanya; Pudupakam, R. S.; Pierson, F. William; Huang, Yao-Wei; Dryman, Barbara A.; Meng, Xiang-Jin

    2010-01-01

    A genetically distinct strain of avian hepatitis E virus (avian HEV-VA strain) was isolated from a healthy chicken in Virginia, and thus it is important to characterize and compare its pathogenicity with the prototype strain (avian HEV-prototype) isolated from a diseased chicken. Here we first constructed an infectious clone of the avian HEV-VA strain. Capped RNA transcripts from the avian HEV-VA clone were replication-competent after transfection of LMH chicken liver cells. Chickens inoculat...

  1. 建筑工程单方造价快速估算方法综述%Review of the New Methods of Fast Estimation of Construction Engineering Unit Square Cost

    Institute of Scientific and Technical Information of China (English)

    梁迅

    2012-01-01

    The accurate estimate of investment at the early stage of the construction has great influence on the propulsion of the construction work. There is no unified general model applicable to all kinds of construction projects. Regarding the domestic economic and technological conditions, Chinese experts have established models on the basis of different ways at home and abroad. The pros and cons of various methods and the scope of the application are summarized.%投资估算处于建筑工程的前期阶段,准确的估算对项目的推进有重大的意义.目前还没有统一通用的模型适用于各类建筑工程.详细阐述了国内专家针对目前国内的具体经济技术状况,结合国内外的各种方法,建立相应的模型.并进一步总结各种方法的优劣性以及适用范围.

  2. Measurement and Correlation of Vapor-Liquid Equilibrium for Binary System 1,2-Epoxycyclohexane+1,2-Dichloroethane

    Institute of Scientific and Technical Information of China (English)

    周彩荣; 王海峰; 石晓华; 蒋登高

    2013-01-01

    Vapor-liquid equilibrium data (T, x, y) of binary system 1,2-epoxycyclohexane+1,2-dichloroethane were determined experimentally by using a modified ROSE-Williams equilibrium vaporization system at 101.33 kPa. The results show that this binary system does not have azeotropic point. The vapor-liquid equilibrium data are in thermodynamic consistency. The binary interaction parameters in the Wilson equation are presented with the correlation of vapor-liquid equilibrium data. The measurements of liquid phase composition and bubble point tem-perature are well represented by the Wilson equation. Values of vapor molecular fractions and activity coefficients from the Wilson equation are presented. This work provides important engineering data for the separation of 1,2-dichloroethane and 1,2-epoxycyclohexane .

  3. Synthesis, chemical reactivity and fungicidal activity of pyrido[1,2-b][1,2,4]triazine derivatives

    Energy Technology Data Exchange (ETDEWEB)

    Ibrahim, Magdy A.; Abdel-Rahman, Reda M.; Abdel-Halim, Ali M.; Ibrahim, Salah S.; Allimony, Hassan A. [Ain Shams University, Roxy, Cairo (Egypt). Faculty of Education. Dept. of Chemistry], e-mail: magdy_ahmed1977@yahoo.com

    2009-07-01

    The synthesis of some new pyrido[1,2-b][1,2,4]triazines (2-12) was achieved by cyclocondensation of 4-aryl-1,6-diamino-2-oxo-1,2-dihydropyridine-3,5-dicarbonitriles (1a,b) with {alpha},{beta}-bifunctional compounds. Pyrido[1,2:2'3']triazino[5'6'-f]triazines (13-14) were also prepared. The behavior of 1a,b toward interactions with indole-2,3-dione and its N-acetyl analogue have been studied under different reaction conditions. The structures of the new products have been deduced from elemental analysis and spectral data (UV, IR, {sup 1}H NMR, {sup 13}C NMR and mass spectra). The new synthesized compounds were screened for their antifungal activities. (author)

  4. A Digital Loudspeaker: Experimental Construction

    Directory of Open Access Journals (Sweden)

    P. Valoušek

    2006-01-01

    Full Text Available To verify the principal functionality of a digital loudspeaker the experimental construction of a digital loudspeaker was designed. This system consists of signal processing unit and transducer array. Both parts offer 8-bit precision and wide a spectrum of sampling frequencies. The signal processing unit is based on a programmable logic device which provides a flexible system for preparing a driving signal. The transducer array is formed by conventional dynamic transducers arranged in a circle. The initial measurements and listening tests provide acceptable results that are valuable for further digital loudspeaker developments. 

  5. Near infrared rubidium 62P3/2,1/2→62S1/2 laser

    Science.gov (United States)

    Moran, Paul J.; Richards, Ryan M.; Rice, Christopher A.; Perram, Glen P.

    2016-09-01

    An optically pumped near infrared rubidium (Rb) pulsed, mirrorless laser has been demonstrated in a heat pipe along both the 62P3/2-62S1/2 transition at 2.73 μm and the 62P1/2-62S1/2 transition at 2.79 μm. The bleached limit, slope efficiency, and maximum laser output energy of the near infrared Rb laser scale linearly with increasing Rb density, contrary to prior results. Previously, a maximum output energy of ~5 nJ had been observed before a rollover occurred in the scaling of output energy with rubidium concentration. In this experiment, the maximum laser output energy observed was ~100 nJ, with no indication of any scaling limitation. A maximum slope efficiency of 1.7×10-4 was observed. A small percentage of the pump photons were absorbed even at the maximum Rb density attainable in the heat pipe, indicating that laser efficiency could be scaled to near the quantum efficiency. Additionally, the hyperfine structure and absorption spectral profile of the 52S1/2-62P1/2 and 52S1/2-62P3/2 (blue) pump transitions were studied using a cw pump source.

  6. High-Temperature Fluid-Wall Reactor Technology Research, Test and Evaluation Performed at Naval Construction Battalion Center, Gulfport, Mississippi, for the United States Air Force Installation/Restoration Program

    Science.gov (United States)

    1988-01-01

    obesity and lack of physical fitness, (3) recent alcohol intake, (4) dehydration, (5) individual suscepti- bility, (6) chronic cardiovascular disease in...62 120Choothn 1 U 127-184 Tet ~achlownetoelne 200 U 78-23.3 2-Butanonse M 934.5 11,1.2,2.Tetrachlonwehae. 200 U 1.l-Tuchmee’.:~- U106484 Toluare 200 U...feed chute has peripheral gasketing to prevent any dust leakage. The fee(d bini has a stationary 10-inch grid grizzly located under thle fe(ed chulte to

  7. Water Security Toolkit User Manual Version 1.2.

    Energy Technology Data Exchange (ETDEWEB)

    Klise, Katherine A.; Siirola, John Daniel; Hart, David; Hart, William Eugene; Phillips, Cynthia Ann; Haxton, Terranna; Murray, Regan; Janke, Robert; Taxon, Thomas; Laird, Carl; Seth, Arpan; Hackebeil, Gabriel; McGee, Shawn; Mann, Angelica

    2014-08-01

    The Water Security Toolkit (WST) is a suite of open source software tools that can be used by water utilities to create response strategies to reduce the impact of contamination in a water distribution network . WST includes hydraulic and water quality modeling software , optimizati on methodologies , and visualization tools to identify: (1) sensor locations to detect contamination, (2) locations in the network in which the contamination was introduced, (3) hydrants to remove contaminated water from the distribution system, (4) locations in the network to inject decontamination agents to inactivate, remove, or destroy contaminants, (5) locations in the network to take grab sample s to help identify the source of contamination and (6) valves to close in order to isolate contaminate d areas of the network. This user manual describes the different components of WST , along w ith examples and case studies. License Notice The Water Security Toolkit (WST) v.1.2 Copyright c 2012 Sandia Corporation. Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive license for use of this work by or on behalf of the U.S. government. This software is distributed under the Revised BSD License (see below). In addition, WST leverages a variety of third-party software packages, which have separate licensing policies: Acro Revised BSD License argparse Python Software Foundation License Boost Boost Software License Coopr Revised BSD License Coverage BSD License Distribute Python Software Foundation License / Zope Public License EPANET Public Domain EPANET-ERD Revised BSD License EPANET-MSX GNU Lesser General Public License (LGPL) v.3 gcovr Revised BSD License GRASP AT&T Commercial License for noncommercial use; includes randomsample and sideconstraints executable files LZMA SDK Public Domain nose GNU Lesser General Public License (LGPL) v.2.1 ordereddict MIT License pip MIT License PLY BSD License PyEPANET Revised BSD License Pyro MIT License PyUtilib Revised BSD License Py

  8. Word Criticality Analysis. MOS: 31M. Skill Levels 1 & 2.

    Science.gov (United States)

    1981-09-01

    401 1 1:./ TCC .6CI6 9 5’ 2 .𔃻 289*2 208.1 2:4, 1 279,1 I AN/ TCC ..61 71ll 58 3.1 2".4 2 c ,2 268.2 266.3 16582 264.l1 5@8.1 23742 21501 131,11f 2 3...91#z 90,2 821&. C* 21 0*) 67,1 AN/ TCC - 69 39#1 34.1 7.3 04;2 28S.:1 2051 241 2’r 7* @01 291 4. 5. 63*1 4051 I AN/ t rCC.. 7 100,1 7 1 512CJ9~ , 4.1...z 2 s~rcv 611’ 350AI 346.2 280,1 t.1 2.1 2 sic 49P2 Zfl*2 eas1 51.1 23!.1 5#1 7.2 to) 202.1 #00#1 2 SLAVr 6104 !32*6 31.1 44.4 2t#2 2 5f,( OER 1

  9. Construction of nonlocal multipartite quantum states

    Science.gov (United States)

    Zhang, Zhi-Chao; Zhang, Ke-Jia; Gao, Fei; Wen, Qiao-Yan; Oh, C. H.

    2017-05-01

    For general bipartite quantum systems, many sets of locally indistinguishable orthogonal product states have been constructed so far. Here, we first present a general method to construct multipartite orthogonal product states in d1⊗d2⊗⋯⊗dn(d1 ,2 ,⋯,n≥3 ,n ≥4 ) by using some locally indistinguishable bipartite orthogonal product states. And we prove that these multipartite orthogonal quantum states cannot be distinguished by local operations and classical communication. Furthermore, in d1⊗d2⊗⋯⊗dn(d1 ,2 ,⋯,n≥3 ,n ≥5 ) , we give a general method to construct a much smaller number of locally indistinguishable multipartite orthogonal product states for even and odd n separately. In addition, we also present a general method to construct complete orthogonal product bases for the multipartite quantum systems. Our results demonstrate the phenomenon of nonlocality without entanglement for the multipartite quantum systems.

  10. Dunkl operators and a family of realizations of osp(1|2)

    DEFF Research Database (Denmark)

    de Bie, H.; Ørsted, B.; Somberg, P.

    2012-01-01

    In this paper, a family of radial deformations of the realization of the Lie superalgebra osp(1|2) in the theory of Dunkl operators is obtained. This leads to a Dirac operator depending on 3 parameters. Several function theoretical aspects of this operator are studied, such as the associated...... measure, the related Laguerre polynomials and the related Fourier transform. For special values of the parameters, it is possible to construct the kernel of the Fourier transform explicitly, as well as the related intertwining operator....

  11. Coordination polymer based on (1,2-bis(2-picolinamido) phenyl)copper

    Institute of Scientific and Technical Information of China (English)

    YE Kaiqi; WU Ying; ZHANG Hongyu; YE Ling; YU Jingsheng; YANG Guangdi; WANG Yue

    2005-01-01

    (1,2-bis(2-pyridinecarboxamido)benzene copper Cu(bpb) was synthesized and employed as a building block to construct supramolecular coordination polymer based on intermolecular coordination and hydrogen bonding interactions. X-ray single-crystal diffraction characterization revealed that intermolecular coordination interactions lead to the formation of one-dimensional infinite molecular columns, which array along the same direction in the crystal resulting in the three-dimensional network. The molecular columns are linked together by hydrogen-bonding interactions, which infinitely extend in bc plane. The one-dimensional coordination bonding and two-dimensional hydrogen-bonding interactions result in the formation of supramolecular coordination polymer.

  12. Dunkl operators and a family of realizations of osp(1|2)

    DEFF Research Database (Denmark)

    de Bie, H.; Ørsted, B.; Somberg, P.

    2012-01-01

    In this paper, a family of radial deformations of the realization of the Lie superalgebra osp(1|2) in the theory of Dunkl operators is obtained. This leads to a Dirac operator depending on 3 parameters. Several function theoretical aspects of this operator are studied, such as the associated...... measure, the related Laguerre polynomials and the related Fourier transform. For special values of the parameters, it is possible to construct the kernel of the Fourier transform explicitly, as well as the related intertwining operator....

  13. Biomechanical analysis of Goel technique for C1-2 fusion.

    Science.gov (United States)

    Park, Jon; Scheer, Justin K; Lim, T Jesse; Deviren, Vedat; Ames, Christopher P

    2011-05-01

    The Goel technique, in which C1-2 intraarticular spacers are used, may be performed to restore stability to a disrupted atlantoaxial complex in conjunction with the Harms technique of placing polyaxial screws and bilateral rods. However, it has yet to be determined biomechanically whether the addition of the C1-2 joint spacers increases the multiaxial rigidity of the fixation construct. The goal of this study was to quantify changes in multiaxial rigidity of the combined Goel-Harms technique with the addition of C1-2 intraarticular spacers. Seven cadaveric cervical spines (occiput-C2) were submitted to nondestructive flexion-extension, lateral bending, and axial rotation tests in a material testing machine spine tester. The authors applied 1.5 Nm at a rate of 0.1 Nm/second and held it constant for 10 seconds. The specimens were loaded 3 times, and data were collected on the third cycle. Testing of the specimens was performed for the following groups: 1) intact (I); 2) with the addition of C-1 lateral mass/C-2 pedicle screws and rod system (I+SR); 3) with C1-2 joint capsule incision, decortication (2 mm on top and bottom of each joint [that is, the C-1 and C-2 surface) and addition of bilateral C1-2 intraarticular spacers at C1-2 junction to the screws and rods (I+SR+C); 4) after removal of the posterior rods and only the bilateral spacers in place (I+C); 5) after removal of spacers and further destabilization with simulated odontoidectomy for a completely destabilized case (D); 6) with addition of posterior rods to the destabilized case (D+SR); and 7) with addition of bilateral C1-2 intraarticular spacers at C1-2 junction to the destabilized case (D+SR+C). The motion of C-1 was measured by a 3D motion tracking system and the motion of C-2 was measured by the rotational sensor of the testing system. The range of motion (ROM) and neutral zone (NZ) across C-1 and C-2 were evaluated. For the intact spine test groups, the addition of screws/rods (I+SR) and screws

  14. On precautious problems in fixed unit price contract at construction enterprises%施工企业在固定单价合同适用方面应注意的问题

    Institute of Scientific and Technical Information of China (English)

    霍明华

    2015-01-01

    The paper interprets the definition of the fixed unit price contract,introduces its features reference and applied scopes,illustrates its operation and requirements by combining with its significance in practice,and points out respective measures for some problems in the fixed unit price contract.%解释了固定单价合同的定义,对固定单价合同的特点、依据及适用范围作了介绍,结合固定单价合同的使用意义,阐述了固定单价合同的操作和要求,并针对固定单价合同容易出现的问题提出了应对措施。

  15. Constructing entanglement measures for fermions

    Science.gov (United States)

    Johansson, Markus; Raissi, Zahra

    2016-10-01

    In this paper we describe a method for finding polynomial invariants under stochastic local operations and classical communication (SLOCC) for a system of delocalized fermions shared between different parties, with global particle-number conservation as the only constraint. These invariants can be used to construct entanglement measures for different types of entanglement in such a system. It is shown that the invariants, and the measures constructed from them, take a nonzero value only if the state of the system allows for the observation of Bell-nonlocal correlations. Invariants of this kind are constructed for systems of two and three spin-1/2 fermions and examples of maximally entangled states are given that illustrate the different types of entanglement distinguished by the invariants. A general condition for the existence of SLOCC invariants and their associated measures is given as a relation between the number of fermions, their spin, and the number of spatial modes of the system. In addition, the effect of further constraints on the system, including the localization of a subset of the fermions, is discussed. Finally, a hybrid Ising-Hubbard Hamiltonian is constructed for which the ground state of a three-site chain exhibits a high degree of entanglement at the transition between a regime dominated by on-site interaction and a regime dominated by Ising interaction. This entanglement is well described by a measure constructed by the introduced method.

  16. BRCA1/2 associated hereditary breast cancer

    Institute of Scientific and Technical Information of China (English)

    Li-song TENG; Yi ZHENG; Hao-hao WANG

    2008-01-01

    Breast cancer is one of the leading causes of death in women today. Some of the patients are hereditary, with a large proportion characterized by mutation in BRCA1 and/or BRCA2 genes. In this review, we provide an overview of these two genes,focusing on their relationship with hereditary breast cancers. BRCA1/2 associated hereditary breast cancers have unique features that differ from the general breast cancers, including alterations in cellular molecules, pathological bases, biological behavior, and a different prevention strategy. But the outcome of BRCA1/2 associated hereditary breast cancers still remains controversial;further studies are needed to elucidate the nature of BRCA1/2 associated hereditary breast cancers.

  17. Extended cluster spin-1/2 XXZ chain

    Science.gov (United States)

    Tahvili, Masoumeh; Mahdavifar, Saeed

    2017-01-01

    We study the quantum phase transitions in the extended cluster spin-1/2 XXZ chain, which is equivalent to a 1D spin-1/2 XXZ model with three-spin interaction. The ground state phase diagram of the 1D spin-1/2 anisotropic XXZ model is known. Depending on the value of the anisotropy parameter, the ground state exhibits the ordering of the Luttinger liquid (LL), the Neel and the saturated ferromagnetic phases. In the absence of the anisotropy, it was shown that the three-spin interaction induces a quantum phase transition between two kinds of the LL phases. In the presence of the anisotropy, by using the analytical and numerical methods, the extended ground state phase diagram of the model is obtained.

  18. 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.

  19. The use of area-oriented work breakdown structures in developments of EPC of process unit; Emprego de estruturas analiticas de projeto orientadas por area fisica em empreendimentos EPC (Engineering, Procurement and Construction) de unidade de processo

    Energy Technology Data Exchange (ETDEWEB)

    Salloum, Joao; Balbi, Diego J.G. [Promon Engenharia Ltda., Rio de Janeiro, RJ (Brazil)

    2012-07-01

    The use of area-oriented work breakdown structures has been proven as a very useful tool for supporting the 'scope detailing' processes in construction projects. This practice allows the definition of intermediate work packages, assisting in the distribution of the scope to be executed within the different team members (or subcontractors), and also allowing the definition of a basic construction strategy based on the main project constraints reflected in each physical area (delivery lead-time of long lead items, for example), to be used as a guide for developing a preliminary master schedule for engineering e procurement activities with a better alignment with the construction strategy. In this way the detailed engineering activities can be developed based on this structure allowing, for example, the possibility of issue piping isometrics and plants under this structure. It's common to split the scope according to the physical location on the eve of starting the field activities as a way to identify the workfaces at the time of the development of 'execution plans' for field activities. However, since this stage much of the engineering activities are already in progress, or even completed, the likelihood of conflicting strategies, such as choosing to start the installation of piping in areas that do not have availability of design documents or required material is considerably higher. Therefore, this study has the intention to discuss about the use of this practice in the early stages of the detailed engineering phase and show the practical impacts of the application of this concept, showing the results obtained with this strategy in oil refining process plant EPC project carried out by Promon Engineering. (author)

  20. 3-[Chloro(phenylmethyl]-6-methyl-1,2-benzoxazole

    Directory of Open Access Journals (Sweden)

    M. Kayalvizhi

    2011-11-01

    Full Text Available The title compound, C15H12ClNO, is a functionalized 1,2-benzoxazole with a chloro(phenylmethyl substituent. The molecule is V-shaped, the dihedral angle between the mean plane of the 1,2-benzoxazole system [maximum deviation = 0.023 (3 Å for the N atom] and the phenyl ring being 70.33 (14°. There are no hydrogen-bonding interactions in the crystal structure, which is stabilized by van der Waals interactions only.

  1. An Efficient Preparation of 1,2-Diamino-1-phenylheptane

    Directory of Open Access Journals (Sweden)

    P. T. Perumal

    2002-06-01

    Full Text Available A convenient four-step method for the preparation of the lipophilic vicinal diamine 1,2-diamino-1-phenylheptane is described. Condensation involving octan-2-one, benzaldehyde and ammonia is reported. Regioselective Schmidt rearrangement of 2,6-diphenyl-3-pentyl-piperidin-4-one (1 to 2,7-diphenyl-3-pentyl hexahydrodiazapin-5-one (3 is presented. Hydrolysis of 2,7-diphenyl-3-pentyl hexahydrodiazapin-5-one to 1,2-diamino-1-phenylheptane (4 is also reported for the first time.

  2. [Hydrogen bis(1,2,4-triazole] 1,2,4-triazolium bis(3-carboxy-4-hydroxybenzenesulfonate 1,2,4-triazole disolvate

    Directory of Open Access Journals (Sweden)

    Ming-qiang Qiu

    2010-08-01

    Full Text Available The title compound, C2H4N3+·[H(C2H3N32]+·2C7H5O6S−·2C2H3N3, consists of two types of 1,2,4-triazole monocation, one protonated at the 2-site lying across a twofold axis and the other protonated at the 4-site with the H atom disordered over a center of symmetry, a 5-sulfosalicylate anion and a neutral 1,2,4-triazole molecule. The component ions are linked into a three-dimensional network by a combination of N—H...O, N—H...N, O—H...O, O—H...N, C—H...O and C—H...N hydrogen bonds. In addition, benzene–benzene π–π interactions of 3.942 (2 Å [interplanar spacing = 3.390 (2 Å] and C—O...π (3.331 Å interactions are observed.

  3. Functionalized adamantane tectons used in the design of mixed-ligand copper(II) 1,2,4-triazolyl/carboxylate metal-organic frameworks.

    Science.gov (United States)

    Senchyk, Ganna A; Lysenko, Andrey B; Krautscheid, Harald; Rusanov, Eduard B; Chernega, Alexander N; Krämer, Karl W; Liu, Shi-Xia; Decurtins, Silvio; Domasevitch, Konstantin V

    2013-01-18

    Bistriazoles, 1,3-bis(1,2,4-triazol-4-yl)propane (tr(2)pr) and 1,3-bis(1,2,4-triazol-4-yl)adamantane (tr(2)ad), were examined in combination with the rigid tetratopic 1,3,5,7-adamantanetetracarboxylic acid (H(4)-adtc) platform for the construction of neutral heteroleptic copper(II) metal-organic frameworks. Two coordination polymers, [{Cu(4)(OH)(2)(H(2)O)(2)}{Cu(4)(OH)(2)}(tr(2)pr)(2)(H-adtc)(4)]·2H(2)O (1) and [Cu(4)(OH)(2)(tr(2)ad)(2)(H-adtc)(2)(H(2)O)(2)]·3H(2)O (2), were synthesized and structurally characterized. In complexes 1 and 2, the N(1),N(2)-1,2,4-triazolyl (tr) and μ(3)-OH(-) groups serve as complementary bridges between adjacent metal centers supporting the tetranuclear dihydroxo clusters. The structure of 1 represents a unique association of two different kinds of centrosymmetrical {Cu(4)(OH)(2)} units in a tight 3D framework, while in compound 2, another configuration type of acentric tetranuclear metal clusters is organized in a layered 3,6-hexagonal motif. In both cases, the {Cu(4)(OH)(2)} secondary building block and trideprotonated carboxylate H-adtc(3-) can be viewed as covalently bound six- and three-connected nodes that define the net topology. The tr ligands, showing μ(3)- or μ(4)-binding patterns, introduce additional integrating links between the neighboring {Cu(4)(OH)(2)} fragments. A variable-temperature magnetic susceptibility study of 2 demonstrates strong antiferromagnetic intracluster coupling (J(1) = -109 cm(-1) and J(2) = -21 cm(-1)), which combines for the bulk phase with a weak antiferromagnetic intercluster interaction (zj = -2.5 cm(-1)).

  4. Concrete construction engineering handbook

    CERN Document Server

    Nawy, Edward G

    2008-01-01

    Provides coverage of concrete construction engineering and technology. This work features discussions focusing on: the advances in engineered concrete materials; reinforced concrete construction; specialized construction techniques; and, design recommendations for high performance.

  5. 1,2,4-Butanetriol: Analysis and Synthesis

    Science.gov (United States)

    1982-12-08

    ANHYDRIDE ........................41 CLEAVAGE OF CYCLIC ETHERS. .. ....... ......... 43 REFERENCES .. ... .......... .......... ......... 45... NOMENCLATURE .. ... .......... .......... ........ 49 1. iii/jy NSWC TR 82-380 ILLUSTRATIONS Figure Page I HYDROGENATION OF DIETHYLMALATE IN ETHANOL OVER NIKKI...of acetic acid, acetic anhydride , and sul Uric acid yielded 1,2,4-butanetriol triacetate. Subsequent methanolysis of the acetate produced BT. Wagaman

  6. Synthesis of Poly(m-pyridylene-1,2-diphenylvinylene

    Directory of Open Access Journals (Sweden)

    Rosana S. Montani

    2000-03-01

    Full Text Available The synthesis by dehalogenating polycondensation and characterization of a new soluble conjugated polymer, poly(m-pyridylene-1,2-diphenylvinylene, DP-PPyV, is reported here. It shows good mechanical properties and a λmax = 330 nm. The maximum intensity peak of MALDI-TOF corresponds to 1.800 Da.

  7. Game-Review: Trilogie Mass Effect 1, 2 und 3

    Directory of Open Access Journals (Sweden)

    Karl H. Stingeder

    2013-03-01

    Full Text Available Karl Stingeder hat als Spieletester die Science Fiction Trilogie Mass Effect (1,2 und 3 rezensiert. Er berichtet von der inneren Vielfalt und dem spannenden Gameplay. Tauchen Sie ein in eine Welt, die ihnen eine lange Spielzeit garantiert und genießen Sie die Pracht dieser Kunstwerke.

  8. Spin diffusion in anisotropic Heisenberg chains: S{>=}1/2

    Energy Technology Data Exchange (ETDEWEB)

    Huber, D.L., E-mail: huber@src.wisc.edu [Physics Department, University of Wisconsin-Madison, 1150 University Avenue, Madison WI 53706 (United States)

    2012-11-01

    In this paper, we investigate spin diffusion in Heisenberg chains with uniaxial nearest-neighbor interactions. The approach followed is based on an analysis of the infinite-temperature longitudinal spin density and spin current correlation functions. For S=1/2, exact results are presented for the time-dependent correlation functions in the XY limit. Away from this limit, the second and fourth moments of the Fourier transform of the spin density correlation function provide information about spin dynamics for arbitrary values of the spin. The moments are used in an assessment of the accuracy of the Gaussian approximation for the spin diffusion constant for S=1/2. The general behavior of the Gaussian approximation when S>1/2 is discussed, and numerical results for the spin diffusion constant are presented for S=1/2, 1, 3/2, 2 and in the classical limit. A moment-based criterion for the boundary in reciprocal space between diffusive and non-diffusive dynamics that applies to arbitrary values of the spin is presented.

  9. Transformation and biodegradation of 1,2,3-trichloropropane (TCP)

    NARCIS (Netherlands)

    Samin, Ghufrana; Janssen, Dick B.

    2012-01-01

    1,2,3-Trichloropropane (TCP) is a persistent groundwater pollutant and a suspected human carcinogen. It is also is an industrial chemical waste that has been formed in large amounts during epichlorohydrin manufacture. In view of the spread of TCP via groundwater and its toxicity, there is a need for

  10. Bis(4H-1,2,4-triazol-3-yldisulfane

    Directory of Open Access Journals (Sweden)

    Dongsheng Liu

    2008-01-01

    Full Text Available The title compound, C4H4N6S2, was synthesized by the reaction of 3-mercapto-1H-1,2,4-triazole with sodium hydroxide in ethanol. The molecule possesses a crystallographically imposed twofold axis. Intermolecular N—H...N hydrogen bonds link the molecules into chains along the c axis.

  11. A Superfield Formalism of osp(1,2) Covariant Quantization

    CERN Document Server

    Lavrov, P M

    2001-01-01

    We propose a superfield description of osp(1,2) covariant quantization by extending the set of admissibility conditions for the quantum action. We realize a superfield form of the generating equations, specify the vacuum functional and obtain the corresponding transformations of extended BRST symmetry.

  12. Facile Synthesis of 1, 2-Diazepine Derivatives under Microwave Irradiation

    Institute of Scientific and Technical Information of China (English)

    Jin Xian WANG; Xiao Ning SHI; Ke Hu WANG; Xiu Qin MEN

    2004-01-01

    An efficient and convenient synthesis of 3, 5, 7-triaryl-4H-1, 2-diazepine from 2, 4, 6-triarylpyrylium salts and hydrazine in water under microwave irradiation is reported. The same reaction can be conducted using 2, 4, 6-triarylthiopyrylium salts and hydrazine.

  13. Transformation and biodegradation of 1,2,3-trichloropropane (TCP)

    NARCIS (Netherlands)

    Samin, Ghufrana; Janssen, Dick B.

    1,2,3-Trichloropropane (TCP) is a persistent groundwater pollutant and a suspected human carcinogen. It is also is an industrial chemical waste that has been formed in large amounts during epichlorohydrin manufacture. In view of the spread of TCP via groundwater and its toxicity, there is a need for

  14. The Addition of Bromine to 1,2-Diphenylethene

    Science.gov (United States)

    Amburgey-Peters, Judith C.; Haynes, Leroy W.

    2005-01-01

    The bromination of 1,2-diphenylethene, using a variety of solvents and brominating agents, can be used in both introductory and advanced organic chemistry courses. The reactions can be used to illustrate the effects of changing solvents and reagents, as well as to reveal interesting aspects of organic reaction mechanisms.

  15. 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...

  16. Synthesis of a polymerizable fluorosurfactant for the construction of stable nanostructured proton-conducting membranes.

    Science.gov (United States)

    Wadekar, Mohan N; Jager, Wolter F; Sudhölter, Ernst J R; Picken, Stephen J

    2010-10-15

    The synthesis of the polymerizable fluorinated surfactant sodium 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoro-2-(4-vinylphenyl)ethoxy)ethanesulfonate (1) and a number of related fluorocarbon compounds is described. Compound 1 is synthesized using a copper-mediated cross-coupling reaction of 4-bromobenzaldehyde and sodium 5-iodooctafluoro-3-oxapentanesulfonate. The resulting benzaldehyde is converted to a styrene unit using a Wittig reaction with methyltriphenylphosphonium bromide in acetonitrile, using DBU as a base. This strategy for converting an iodo-functionalized fluorosurfactant to a styrene-containing fluorosurfactant is highly efficient because both reactions are performed in polar solvents and are compatible with the sulfonate moiety. In addition, the copper-mediated cross-coupling reaction is most efficient with electron-poor aryl bromides like 4-bromobenzaldehyde. We wish to employ 1 for the construction of nanostructured membranes by polymerization of 1 in a microemulsion or in lyotropic liquid crystalline phases.

  17. Construction experiences from underground works at Oskarshamn. Compilation report

    Energy Technology Data Exchange (ETDEWEB)

    Carlsson, Anders (Vattenfall Power Consultant AB, Stockholm (SE)); Christiansson, Rolf (Swedish Nuclear Fuel and Waste Management Co., Stockholm (SE))

    2007-12-15

    The main objective with this report is to compile experiences from the underground works carried out at Oskarshamn, primarily construction experiences from the tunnelling of the cooling water tunnels of the Oskarshamn nuclear power units 1,2 and 3, from the underground excavations of Clab 1 and 2 (Central Interim Storage Facility for Spent Nuclear Fuel), and Aespoe Hard Rock Laboratory. In addition, an account is given of the operational experience of Clab 1 and 2 and of the Aespoe HRL on primarily scaling and rock support solutions. This report, as being a compilation report, is in its substance based on earlier published material as presented in the list of references. Approximately 8,000 m of tunnels including three major rock caverns with a total volume of about 550,000 m3 have been excavated. The excavation works of the various tunnels and rock caverns were carried out during the period of 1966-2000. In addition, minor excavation works were carried out at the Aespoe HRL in 2003. The depth location of the underground structures varies from near surface down to 450 m. As an overall conclusion it may be said that the rock mass conditions in the area are well suited for underground construction. This conclusion is supported by the experiences from the rock excavation works in the Simpevarp and Aespoe area. These works have shown that no major problems occurred during the excavation works; nor have any stability or other rock engineering problems of significance been identified after the commissioning of the Oskarshamn nuclear power units O1, O2 and O3, BFA, Clab 1 and 2, and Aespoe Hard Rock Laboratory. The underground structures of these facilities were built according to plan, and since than been operated as planned. Thus, the quality of the rock mass within the construction area is such that it lends itself to excavation of large rock caverns with a minimum of rock support

  18. 1-(2,6-Dichlorobenzoyl)-3-(2,3,5,6-tetrachlorophenyl)thiourea trichloromethane hemisolvate

    OpenAIRE

    Saeed Anwar; Michael Bolte; Khawar Rauf, M.

    2009-01-01

    The title compound, C14H6Cl6N2OS·0.5CHCl3, crystallizes with four 1-(2,6-dichlorobenzoyl)-3- (2,3,5,6-tetrachlorophenyl)thiourea molecules and two trichloromethane molecules in the asymmetric unit. The thiourea molecules exist in the solid state in their thione forms with typical thiourea C-S and C-O bonds lengths, as well as shortened C-N bonds. The -NH-C(=S)-NH-C(=O)- plane is almost perpendicular to the benzene ring in each thiourea molecule. Intramolecular N-H...O hydrogen bonds stabilize...

  19. Turbine design and application volumes 1, 2, and 3

    Science.gov (United States)

    Glassman, Arthur J. (Editor)

    1994-01-01

    NASA has an interest in turbines related primarily to aeronautics and space applications. Airbreathing turbine engines provide jet and turboshaft propulsion, as well as auxiliary power for aircraft. Propellant-driven turbines provide rocket propulsion and auxiliary power for spacecraft. Closed-cycle turbine engines using inert gases, organic fluids, and metal fluids have been studied for providing long-duration electric power for spacecraft. Other applications of interest for turbine engines include land-vehicle (cars, trucks, buses, trains, etc.) propulsion power and ground-based electrical power. In view of the turbine-system interest and efforts at Lewis Research Center, a course entitled 'Turbine Design and Application' was presented during 1968-69 as part of the In-house Graduate Study Program. The course was somewhat revised and again presented in 1972-73. Various aspects of turbine technology were covered including thermodynamic and fluid-dynamic concepts, fundamental turbine concepts, velocity diagrams, losses, blade aerodynamic design, blade cooling, mechanical design, operation, and performance. The notes written and used for the course have been revised and edited for publication. Such a publication can serve as a foundation for an introductory turbine course, a means for self-study, or a reference for selected topics. Any consistent set of units will satisfy the equations presented. Two commonly used consistent sets of units and constant values are given after the symbol definitions. These are the SI units and the U.S. customary units. A single set of equations covers both sets of units by including all constants required for the U.S. customary units and defining as unity those not required for the SI units. Three volumes are compiled into one.

  20. Quasilocal conservation laws in XXZ spin-1/2 chains: Open, periodic and twisted boundary conditions

    Directory of Open Access Journals (Sweden)

    Tomaž Prosen

    2014-09-01

    Full Text Available A continuous family of quasilocal exact conservation laws is constructed in the anisotropic Heisenberg (XXZ spin-1/2 chain for periodic (or twisted boundary conditions and for a set of commensurate anisotropies densely covering the entire easy plane interaction regime. All local conserved operators follow from the standard (Hermitian transfer operator in fundamental representation (with auxiliary spin s=1/2, and are all even with respect to a spin flip operation. However, the quasilocal family is generated by differentiation of a non-Hermitian highest weight transfer operator with respect to a complex auxiliary spin representation parameter s and includes also operators of odd parity. For a finite chain with open boundaries the time derivatives of quasilocal operators are not strictly vanishing but result in operators localized near the boundaries of the chain. We show that a simple modification of the non-Hermitian transfer operator results in exactly conserved, but still quasilocal operators for periodic or generally twisted boundary conditions. As an application, we demonstrate that implementing the new exactly conserved operator family for estimating the high-temperature spin Drude weight results, in the thermodynamic limit, in exactly the same lower bound as for almost conserved family and open boundaries. Under the assumption that the bound is saturating (suggested by agreement with previous thermodynamic Bethe ansatz calculations we propose a simple explicit construction of infinite time averages of local operators such as the spin current.

  1. The Stellar Mass Tully-Fisher Relation to z=1.2 from AEGIS

    CERN Document Server

    Kassin, S A; Faber, S M; Koo, D C; Lotz, J M; Diemand, J; Harker, J J; Bundy, K; Metevier, A J; Phillips, A C; Cooper, M C; Croton, D J; Konidaris, N; Noeske, K G; Willmer, C N A; Kassin, Susan A.; Weiner, Benjamin J.; Koo, David C.; Lotz, Jennifer M.; Harker, Justin J.; Bundy, Kevin; Phillips, Andrew C.; Cooper, Michael C.; Croton, Darren J.; Konidaris, Nicholas; Noeske, Kai G.

    2007-01-01

    We combine newly measured rotation velocities, velocity dispersions, and stellar masses to construct stellar mass Tully-Fisher relations (M*TFRs) for 544 galaxies with strong emission lines at 0.11.2 from the All Wavelength Extended Groth Strip International Survey (AEGIS) and the Deep Extragalactic Evolutionary Probe 2 Survey (DEEP2). The conventional M*TFR using only rotation velocity (Vrot) shows large scatter (~1.5 dex in velocity). The scatter and residuals are correlated with morphology in the sense that disturbed, compact, and major merger galaxies have lower velocities for their masses. We construct an M*TFR using the kinematic estimator S_0.5 which is defined as sqrt(0.5Vrot^2 + sigma_g^2) and accounts for disordered or non-circular motions through the gas velocity dispersion (sigma_g). The new M*TFR, termed S_0.5/M*TFR, is remarkably tight over 0.11.2 with no detectable evolution of its intercept or slope with redshift. The average best fit relation has 0.47 dex scatter in stellar ...

  2. AUSTA - a self-sufficient environmental analysis station for the analysis of nitrogen, sulfur and carbon compounds. Sub-project: development and construction of the central processing unit for the self-sufficient environmental analysis station. Final report; AUSTA - Autarke Umweltmessstation zur Analyse von Stickstoff-, Schwefel- und Kohlenstoffverbindungen. Teilvorhaben: Entwicklung und Konstruktion der Zentraleinheit fuer die autarke Umweltmessstation. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Lenk, N.; Ehrling, C.

    2002-07-01

    The aim of the common research project was the development of basics as well as the construction and the testing of a functional model for an environmental analysis system. This system should be able not only to analyze independently environmental toxicologically interesting Carbon, Nitrogen and Sulfur species from watery samples, but also to evaluate and document the results of the analysis. A functional model for the determination of TC/TN and the species TIC, Nitrate, Nitrite, Ammonium, Sulfite and Sulfide from an aqueous matrix, was built and tested successfully in the laboratory. The functional model was realized in a modular construction. Micro system technical components were integrated into the system. The dosage of samples and standards as well as the sample preparation for the determination of Nitrate is carried out via a special own-developed control module. The construction of the combustion unit with reactors and the appendant technique for joining parts was carried out in a miniaturization, not realized up to now. (orig.)

  3. μ-1,2-Bis(diphenylphosphinoethane-κ2P:P′-bis{[1,2-bis(diphenylphosphinoethane-κ2P,P′]bromidocopper(I} acetone disolvate

    Directory of Open Access Journals (Sweden)

    Wen-Juan Shi

    2008-10-01

    Full Text Available In the crystal structure of the title compound, [Cu2Br2(dppe3]·2CH3COCH3 [dppe is 1,2-bis(diphenylphosphinoethane, C26H24P2], the two Cu centers are bridged by a dppe ligand and each metal center carries one chelating dppe unit, with the fourth coordination site available for the Br− anion. The molecule is centrosymmetric, with the center of symmetry located between the methylene C atoms of the bridging dppe ligand. The crystal structure is stabilized by intramolecular C—H...Br hydrogen bonds and intermolecular π–π interactions, with a centroid-to-centroid distance of 3.2055 (1 Å.

  4. Trimethyl 1-(2-methyl-1-phenylsulfonyl-1H-indol-3-ylpropane-1,2,3-tricarboxylate

    Directory of Open Access Journals (Sweden)

    M. N. Ponnuswamy

    2009-02-01

    Full Text Available In the title compound, C24H25NO8S, the indole unit is planar and makes a dihedral angle of 79.73 (11° with the phenyl ring of the sulfonyl substituent. The molecules in the unit cell are stabilized by C—H...O and C—H...π intermolecular interactions in addition to van der Waals forces.

  5. 1,1,2,2-Tetrakis(dimethylaminoethane-1,2-diium bis(tetraphenylborate acetone disolvate

    Directory of Open Access Journals (Sweden)

    Willi Kantlehner

    2012-05-01

    Full Text Available The title compound, C10H24N42+·2C24H20B−·2C3H6O, crystallizes with two acetone solvent molecules per asymmetric unit. In the dication, both amidinium units are twisted about the central C—C single bond by 63.8 (3° and the positive charges are delocalized over both N—C—N planes.

  6. 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…

  7. ABIOTIC DEHALOGENATION OF 1,2-DICHLOROETHANE AND 1,2-DIBROMETHANE IN AQUEOUS SOLUTION CONTAINING HYDROGEN SULFIDE

    Science.gov (United States)

    The detection of significant levels of halogenated ali- phatic contaminants in groundwater resources in the U- nited States (1, 2) has spurred a considerable effort to understand the various mechanisms-both microbiological and abiotic-by which these compounds may be trans- formed...

  8. New Features in CMMI V1.2%CMMI V1.2 版本的新特征

    Institute of Scientific and Technical Information of China (English)

    许东; 刘宗田

    2007-01-01

    最新发布的CMMI V1.2 模型做了很多的改进.将原先的模型CMMI-SE/SW/IPPD进行了整合,更改了模型的名称:CMMI-SE/SW/改为用于开发的CMMI模型CMMI-DEV v1.2.CMMI v1.2 产品集支持开发、服务和获取过程,CMMI-DEV是其中的一种并首先发布,其它的CMMI套件在2007年陆续发布."附加"是用来扩展模型的,如CMMI-DEV+IPPD,表示某些过程域是和IPPD中的目标和实践结合起来使用.新版本还将CMMI的两种表示方式(连续和阶段式)合并在一个文档中表述.在CMMI V1.2 版本中,模型的表述、术语、过程域都有相应的改进.

  9. HMGB1/2 can target DNA for illegitimate cleavage by the RAG1/2 complex

    Directory of Open Access Journals (Sweden)

    Swanson Patrick C

    2009-03-01

    Full Text Available Abstract Background V(DJ recombination is initiated in antigen receptor loci by the pairwise cleavage of recombination signal sequences (RSSs by the RAG1 and RAG2 proteins via a nick-hairpin mechanism. The RSS contains highly conserved heptamer (consensus: 5'-CACAGTG and nonamer (consensus: 5'-ACAAAAACC motifs separated by either 12- or 23-base pairs of poorly conserved sequence. The high mobility group proteins HMGB1 and HMGB2 (HMGB1/2 are highly abundant architectural DNA binding proteins known to promote RAG-mediated synapsis and cleavage of consensus recombination signals in vitro by facilitating RSS binding and bending by the RAG1/2 complex. HMGB1/2 are known to recognize distorted DNA structures such as four-way junctions, and damaged or modified DNA. Whether HMGB1/2 can promote RAG-mediated DNA cleavage at sites lacking a canonical RSS by targeting or stabilizing structural distortions is unclear, but is important for understanding the etiology of chromosomal translocations involving antigen receptor genes and proto-oncogene sequences that do not contain an obvious RSS-like element. Results Here we identify a novel DNA breakpoint site in the plasmid V(DJ recombination substrate pGG49 (bps6197 that is cleaved by the RAG proteins via a nick-hairpin mechanism. The bps6197 sequence lacks a recognizable heptamer at the breakpoint (5'-CCTGACG-3' but contains a nonamer-like element (5'-ACATTAACC-3' 30 base pairs from the cleavage site. We find that RAG-mediated bps6197 cleavage is promoted by HMGB1/2, requiring both HMG-box domains to be intact to facilitate RAG-mediated cleavage, and is stimulated by synapsis with a 12-RSS. A dyad-symmetric inverted repeat sequence lying 5' to the breakpoint is implicated as a target for HMGB1/2 activity. Conclusion We have identified a novel DNA sequence, called bps6197, that supports standard V(DJ-type cleavage despite the absence of an apparent heptamer motif. Efficient RAG-mediated bps6197 cleavage requires

  10. HMGB1/2 can target DNA for illegitimate cleavage by the RAG1/2 complex.

    Science.gov (United States)

    Zhang, Ming; Swanson, Patrick C

    2009-03-24

    V(D)J recombination is initiated in antigen receptor loci by the pairwise cleavage of recombination signal sequences (RSSs) by the RAG1 and RAG2 proteins via a nick-hairpin mechanism. The RSS contains highly conserved heptamer (consensus: 5'-CACAGTG) and nonamer (consensus: 5'-ACAAAAACC) motifs separated by either 12- or 23-base pairs of poorly conserved sequence. The high mobility group proteins HMGB1 and HMGB2 (HMGB1/2) are highly abundant architectural DNA binding proteins known to promote RAG-mediated synapsis and cleavage of consensus recombination signals in vitro by facilitating RSS binding and bending by the RAG1/2 complex. HMGB1/2 are known to recognize distorted DNA structures such as four-way junctions, and damaged or modified DNA. Whether HMGB1/2 can promote RAG-mediated DNA cleavage at sites lacking a canonical RSS by targeting or stabilizing structural distortions is unclear, but is important for understanding the etiology of chromosomal translocations involving antigen receptor genes and proto-oncogene sequences that do not contain an obvious RSS-like element. Here we identify a novel DNA breakpoint site in the plasmid V(D)J recombination substrate pGG49 (bps6197) that is cleaved by the RAG proteins via a nick-hairpin mechanism. The bps6197 sequence lacks a recognizable heptamer at the breakpoint (5'-CCTGACG-3') but contains a nonamer-like element (5'-ACATTAACC-3') 30 base pairs from the cleavage site. We find that RAG-mediated bps6197 cleavage is promoted by HMGB1/2, requiring both HMG-box domains to be intact to facilitate RAG-mediated cleavage, and is stimulated by synapsis with a 12-RSS. A dyad-symmetric inverted repeat sequence lying 5' to the breakpoint is implicated as a target for HMGB1/2 activity. We have identified a novel DNA sequence, called bps6197, that supports standard V(D)J-type cleavage despite the absence of an apparent heptamer motif. Efficient RAG-mediated bps6197 cleavage requires the presence of HMGB1/2, is stimulated by

  11. Cardiac tissue engineering: cell seeding, cultivation parameters, and tissue construct characterization.

    Science.gov (United States)

    Carrier, R L; Papadaki, M; Rupnick, M; Schoen, F J; Bursac, N; Langer, R; Freed, L E; Vunjak-Novakovic, G

    1999-09-01

    Cardiac tissue engineering has been motivated by the need to create functional tissue equivalents for scientific studies and cardiac tissue repair. We previously demonstrated that contractile cardiac cell-polymer constructs can be cultivated using isolated cells, 3-dimensional scaffolds, and bioreactors. In the present work, we examined the effects of (1) cell source (neonatal rat or embryonic chick), (2) initial cell seeding density, (3) cell seeding vessel, and (4) tissue culture vessel on the structure and composition of engineered cardiac muscle. Constructs seeded under well-mixed conditions with rat heart cells at a high initial density ((6-8) x 10(6) cells/polymer scaffold) maintained structural integrity and contained macroscopic contractile areas (approximately 20 mm(2)). Seeding in rotating vessels (laminar flow) rather than mixed flasks (turbulent flow) resulted in 23% higher seeding efficiency and 20% less cell damage as assessed by medium lactate dehydrogenase levels (p laminar and dynamic, yielded constructs with a more active, aerobic metabolism as compared to constructs cultured in mixed or static flasks. After 1-2 weeks of cultivation, tissue constructs expressed cardiac specific proteins and ultrastructural features and had approximately 2-6 times lower cellularity (p < 0.05) but similar metabolic activity per unit cell when compared to native cardiac tissue.

  12. Chemical pressure induced change in multiferroicity of Bi1+2xGd2x/2Fe1-2xO3 bulk ceramics

    Science.gov (United States)

    Pradhan, S. K.; Sahu, D. R.; Rout, P. P.; Das, S. K.; Pradhan, A. K.; Srinivasu, V. V.; Roul, B. K.

    2017-04-01

    We have optimized Gd ion substitution in BiFeO3 (BFO) and observed prominently change in structural, electrical and magnetic behavior of Bi1+2xGd2x/2Fe1-2xO3 ceramics synthesized through slow step sintering schedule. It is observed that with the increase in concentration of Gd (x=0.1), original structure of BFO is transformed from rhombohedral R3c space group to orthorhombic Pn21a space group. Surprisingly, unit cell volume is drastically contracted (35% for x=0.2) and the sintered specimen showed enhanced room temperature ferromagnetic behavior although the original BFO is normally G-type antiferromagnetic in nature at 643 K. It is expected that intrinsic chemical pressure within the bulk body built by the substitution of Gd in presence of excess bismuth greatly supported through unidirectional movement of electrical dipole moment with in each individual domain as a result of which suppression of leakage current with enhanced dielectric and ferroelectric hysteresis is observed.

  13. Dielectric and Magnetic Properties of Ba(Fe1/2Ta1/2)O3-BiFeO3 Ceramics

    Science.gov (United States)

    Manotham, S.; Butnoi, P.; Jaita, P.; Pinitsoontorn, S.; Sweatman, D.; Eitssayeam, S.; Pengpat, K.; Rujijanagul, G.

    2016-11-01

    The properties of (1- x)Ba(Fe1/2Ta1/2)O3- xBiFeO3 [(1- x)BFT- xBFO] ( x = 0.0, 0.1, 0.3, 0.5) ceramics have been investigated. (1- x)BFT- xBFO powders were synthesized by a modified two-step calcination technique, and ceramics were fabricated by a conventional technique. X-ray diffraction (XRD) analysis revealed that the modified ceramics exhibited a mixture of BFT cubic phase and BFO rhombohedral phase. The peaks shift increased with increasing BFO content to a maximum value for the composition with x = 0.5. The overall shift of the XRD patterns indicated distortion of the unit cell, which may be due to ions from BFO entering the BFT lattice. BFO additive promoted grain growth, while the maximum density of the studied ceramics was observed for the x = 0.1 composition. The modified ceramics presented enhanced thermal and frequency stability of the dielectric constant. BFO additive also reduced the loss tangent for the system. Improvement of the magnetic behavior was observed after adding BFO. Furthermore, all the ceramics, including pure BFT (a nonmagnetic phase at room temperature), presented a magnetocapacitance effect, which can be related to magnetoresistance along with Maxwell-Wagner polarization effects.

  14. Structural and impedance spectroscopy analysis of Ba(Fe{sub 1/2}Nb{sub 1/2})O{sub 3} ceramic

    Energy Technology Data Exchange (ETDEWEB)

    Bhagat, S.; Prasad, K. [Materials Research Laboratory, University Department of Physics, T.M. Bhagalpur University, Bhagalpur 812 007 (India)

    2010-05-15

    Lead-free perovskite Ba(Fe{sub 1/2}Nb{sub 1/2})O{sub 3} (BFN) was prepared by conventional ceramic fabrication technique at 1200 C/5 h in air atmosphere. The crystal symmetry, space group, and unit cell dimensions were determined from the experimental results using FullProf software whereas crystallite size and lattice strain were estimated from Williamson-Hall approach. X-ray diffraction (XRD) analysis of the compound indicated the formation of a single-phase monoclinic structure with the space group P2/m. EDAX and SEM studies were carried out in order to evaluate the quality and purity of the compound. To find a correlation between the response of the real system and idealized model circuit composed of discrete electrical components, the model fittings were presented using the impedance data. Complex impedance analyses suggested the dielectric relaxation to be of non-Debye type. The correlated barrier hopping (CBH) model was employed to successfully explain the mechanism of charge transport in BFN. (Abstract Copyright [2010], Wiley Periodicals, Inc.)

  15. Self-Organized Construction with Continuous Building Material

    DEFF Research Database (Denmark)

    Heinrich, Mary Katherine; Wahby, Mostafa; Divband Soorati, Mohammad;

    2016-01-01

    Self-organized construction with continuous, structured building material, as opposed to modular units, offers new challenges to the robot-based construction process and lends the opportunity for increased flexibility in constructed artifact properties, such as shape and deformation. As an exampl...

  16. 3-Benzyl-5-methyl-1,2-benzoxazole 2-oxide

    Directory of Open Access Journals (Sweden)

    G. Anuradha

    2012-10-01

    Full Text Available In the title compound, C15H13NO2, the isoxazole unit and the attached benzene ring are almost coplanar, making a dihedral angle of 1.42 (8°. The benzyl ring is inclined to the isoxazole ring by 74.19 (8° and is in a +sc conformation with respect to the benzisoxazole unit. In the crystal, C—H...O hydrogen bonds link the molecules, forming zigzag chains propagating along the b axis. There are also π–π interactions present involving the isoxazole and benzyl rings [centroid–centroid distance = 3.5209 (10 Å], and C—H...π interactions involving the benzene ring of the benzoisoxazole unit and the methylene bridging group.

  17. Sporothrix schenckii (sensu strict S. globosa) mating type 1-2 (MAT1-2) gene.

    Science.gov (United States)

    Kano, Rui; Anzawa, Kazushi; Mochizuki, Takashi; Nishimoto, Katsutaro; Hiruma, Masataro; Kamata, Hiroshi; Hasegawa, Atsuhiko

    2013-09-01

    Sporotix schenckii is a pathogenic fungus that causes human and animal sporotrichosis, and based on morphology of the sessile conidia and molecular analysis, it was recently recognized as a species complex comprising at least the following six sibling species: S. albicans, S. brasiliensis, S. globosa, S. luriei, S. mexicana and S. schenckii. However, apart from S. schenckii sensu strict, only S. brasiliensis, S. globosa and S. luriei are associated with human and animal infection. S. globosa has been most commonly isolated in Asia, Europe and the USA; therefore, molecular epidemiological study for S. globosa is important in relation to human sporotrichosis in Japan. To the best of our knowledge, this is the first study to determine the mating type 1-2 (MAT1-2) gene of Sporothrix schenckii with the aim of understanding the taxonomy of the genus Sporothrix. The MAT1-2 gene (1618 bp) encodes a protein sequence of 198 amino acids. Reverse transcription polymerase chain reaction analysis also detected MAT1-2 gene mRNA expression in all of the S. schenckii strains examined, indicating that this gene is expressed in S. schenckii cells. Phylogenetic analysis of the MAT1-2 gene fragments of Ophiostoma himal-ulmi, O. novo-ulmi, O. ulmi and S. schenckii indicated that these isolates could be classified into four clusters. MAT1-1 gene-specific polymerase chain reaction was positive in 15 isolates, but negative in four human isolates and one feline isolate.

  18. Beam current transformer (BCT) for experiment WA1/2

    CERN Multimedia

    CERN PhotoLab

    1978-01-01

    In experiment WA1/2, a 400 GeV proton beam from the SPS was directed at a target, downstream of which a hadron line selected, in several narrow momentum bands, a beam of either pi+ and K+ or pi- and K-. These neutrino-parent particles, before entering a 292 m long decay tunnel, passed through a set of 2 BCTs of a design seen here. They measured the hadron intensity (10^10 to 10^11 particles/pulse) with a precision of the order of 1%. There were 2 of them, for enhanced precision and confidence. After the discovery of neutral currents in the Gargamelle-experiment, WA1/2 was the first follow-up, high-precision experiment (Z.Phys.C35, 443-452, 1987 and Z.Phys.C45, 361-379, 1990). See also 7706516X.

  19. Hexamethylenetetramine-4-nitrocatechol-water (1/2/1).

    Science.gov (United States)

    Chantrapromma, Suchada; Usman, Anwar; Fun, Hoong Kun; Poh, Bo Long; Karalai, Chatchanok

    2002-11-01

    In the title adduct, 1,3,5,7-tetraazatricyclo[3.3.1.1(3,7)]decane-4-nitrobenzene-1,2-diol-water (1/2/1), C(6)H(12)N(4).2C(6)H(5)NO(4).H(2)O, the hexamethylenetetramine molecule acts as an acceptor of intermolecular O-H.N hydrogen-bonding interactions from the water molecule and the hydroxy groups of one of the two symmetry-independent 4-nitrocatechol molecules. The structure is built from molecular layers which are stabilized by three intermolecular O-H.O, two intermolecular O-H.N and four intermolecular C-H.O hydrogen bonds. The layers are further interconnected by one additional intermolecular O-H.N and two intermolecular C-H.O hydrogen bonds.

  20. Click chemistry: 1,2,3-triazoles as pharmacophores.

    Science.gov (United States)

    Agalave, Sandip G; Maujan, Suleman R; Pore, Vandana S

    2011-10-04

    The copper(I)-catalyzed 1,2,3-triazole-forming reaction between azides and terminal alkynes has become the gold standard of 'click chemistry' due to its reliability, specificity, and biocompatibility. Applications of click chemistry are increasingly found in all aspects of drug discovery; they range from lead finding through combinatorial chemistry and target-templated in vitro chemistry, to proteomics and DNA research by using bioconjugation reactions. The triazole products are more than just passive linkers; they readily associate with biological targets, through hydrogen-bonding and dipole interactions. The present review will focus mainly on the recent literature for applications of this reaction in the field of medicinal chemistry, in particular on use of the 1,2,3-triazole moiety as pharmacophore.

  1. Analyzing ERK 1/2 signalling and targets.

    Science.gov (United States)

    Brietz, Alexandra; Schuch, Kristin Verena; Wangorsch, Gaby; Lorenz, Kristina; Dandekar, Thomas

    2016-07-19

    The ERK cascade (e.g. Raf-1) protects the heart from cell death and ischemic injury but can also turn maladaptive. Furthermore, an additional autophosphorylation of ERK2 at Thr188 (Erk1 at Thr208) allows ERK to phosphorylate nuclear targets involved in hypertrophy, stressing this additional phosphorylation as a promising pharmacological target. An in silico model was assembled and setup to reproduce different phosphorylation states of ERK 1/2 and various types of stimuli (hypertrophic versus non-hypertrophic). Synergistic and antagonistic receptor stimuli can be predicted in a semi-quantitative model, simulated time courses were experimentally validated. Furthermore, we detected new targets of ERK 1/2, which possibly contribute to the development of pathological hypertrophy. In addition we modeled further interaction partners involved in the protective and maladaptive cascade. Experimental validation included different gene expression data sets supporting key components and novel interaction partners as well as time courses in chronic heart failure.

  2. Fractals with Hyperbolic Scators in 1 + 2 Dimensions

    Science.gov (United States)

    Fernández-Guasti, M.

    2015-04-01

    A nondistributive scator algebra in 1 + 2 dimensions is used to map the quadratic iteration. The hyperbolic numbers square bound set reveals a rich structure when taken into the three-dimensional (3D) hyperbolic scator space. Self-similar small copies of the larger set are obtained along the real axis. These self-similar sets are located at the same positions and have equivalent relative sizes as the small M-set copies found between the Myrberg-Feigenbaum (MF) point and -2 in the complex Mandelbrot set. Furthermore, these small copies are self similar 3D copies of the larger 3D bound set. The real roots of the respective polynomials exhibit basins of attraction in a 3D space. Slices of the 3D confined scator set, labeled {c2i0}{E}+1+2(s;x,y), are shown at different planes to give an approximate idea of the 3D objects highly complicated boundary.

  3. Quasi-Monte Carlo rules for numerical integration over the unit sphere $\\mathbb{S}^2$

    CERN Document Server

    Brauchart, Johann S

    2011-01-01

    We study numerical integration on the unit sphere $\\mathbb{S}^2 \\subset \\mathbb{R}^3$ using equal weight quadrature rules, where the weights are such that constant functions are integrated exactly. The quadrature points are constructed by lifting a $(0,m,2)$-net given in the unit square $[0,1]^2$ to the sphere $\\mathbb{S}^2$ by means of an area preserving map. A similar approach has previously been suggested by Cui and Freeden [SIAM J. Sci. Comput. 18 (1997), no. 2]. We prove three results. The first one is that the construction is (almost) optimal with respect to discrepancies based on spherical rectangles. Further we prove that the point set is asymptotically uniformly distributed on $\\mathbb{S}^2$. And finally, we prove an upper bound on the spherical cap $L_2$-discrepancy of order $N^{-1/2} (\\log N)^{1/2}$ (where $N$ denotes the number of points). Numerical results suggest that the $(0,m,2)$-nets lifted to the sphere $\\mathbb{S}^2$ have spherical cap $L_2$-discrepancy converging with the optimal order of ...

  4. Topological basis associated with B–M–W algebra: Two-spin-1/2 realization

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Gangcheng, E-mail: wanggc000@163.com [School of Physics, Northeast Normal University, Changchun 130024 (China); Sun, Chunfang [School of Physics, Northeast Normal University, Changchun 130024 (China); Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543 (Singapore); Liu, Bo; Liu, Ying; Zhang, Yan [School of Physics, Northeast Normal University, Changchun 130024 (China); Xue, Kang, E-mail: xuekang@nenu.edu.cn [School of Physics, Northeast Normal University, Changchun 130024 (China)

    2015-01-02

    In this letter, we study the two-spin-1/2 realization for the Birman–Murakami–Wenzl (B–M–W) algebra and the corresponding Yang–Baxter Ř(θ,ϕ) matrix. Based on the two-spin-1/2 realization for the B–M–W algebra, the three-dimensional topological space, which is spanned by topological basis, is investigated. By means of such topological basis realization, the four-dimensional Yang–Baxter Ř(θ,ϕ) can be reduced to Wigner D{sup J} function with J=1. The entanglement and Berry phase in the spectral parameter space are also explored. The results show that one can obtain a set of entangled basis via Yang–Baxter Ř(θ,ϕ) matrix acting on the standard basis, and the entanglement degree is maximum when the Ř{sub i}(θ,ϕ) turns to the braiding operator. - Highlights: • We study a two-spin-1/2 realization of Birman–Murakami–Wenzl algebra. • Topological basis for this model is constructed in this paper. • The reduced representation is related with Wigner D matrix.

  5. Synthesis and Conformation of cis-1,2-Disubstituted Cyclododecene

    Institute of Scientific and Technical Information of China (English)

    HAN,Xiang-Yu(韩翔宇); WANG,Ming-An(王明安); LIANG,Xiao-Mei(梁晓梅); WANG,Dao-Quan(王道全)

    2004-01-01

    Eight 1,2-disubstituted cyclododecenes were synthesized from a-alkoxycarbonyl-cyclododecanone and alkyl chloroformate. Their configuration and conformation determined by IR, NMR spectroscopy and X-ray diftraction analysis showed that the carbon-carbon double bond of all of the synthesized compounds has cis-configuration, and the ring skeleton of their preferred conformation is [lene2333] in solid, and they may adopt two different [lene2333]conformations, which exist in a dynamic equilibrium in solution.

  6. Studies of the Beetle 1.2 Pipeline Homogeneity

    CERN Document Server

    Agari, M; Blouw, J; Schmelling, M; Hofmann, W; Schwingenheuer, B; Pugatch, V; Volyanskyy, D; Jiménez-Otero, S; Tran, M T; Voss, H; Bernhard, R P; Köstner, S; Lehner, F; Lois, C; Needham, M; Steinkamp, O; Straumann, U; Vollhardt, A

    2003-01-01

    The pipeline homogeneity in general and the behaviour of the edge channels of the Beetle 1.2 readout chip [1] were studied with data taken during the Silicon Tracker test beam period in May 2003. A contribution of roughly 10\\% from pipeline inhomogeneities to the strip noise was observed. All channels including the first and the last one were found to be fully functional.

  7. General synthesis of substituted 1,2-dihydropyridines.

    Science.gov (United States)

    Tejedor, David; Cotos, Leandro; Méndez-Abt, Gabriela; García-Tellado, Fernando

    2014-11-07

    A general and practical metal-free protocol for the synthesis of 1,2-dihydropyridines with wide structural/functional diversity at the ring and featuring mono, double, or spiro substitution at the sp(3) position is described. The protocol entails a microwave-assisted domino reaction of a propargyl vinyl ether (secondary or tertiary) and a primary amine (aliphatic or aromatic) in toluene or methanol.

  8. CMMI (Trademark) for Acquisition, Version 1.2

    Science.gov (United States)

    2007-11-01

    or established technologies to be applied, such as robotics, composite materials, or artificial intelligence ; and breadth of the functionality...you to align the way you do busines They allow you to address scalability and provide a way to incorpora knowledge of how to do things better. Processes...part by the selections made by the organization to meet its busine objectives. Tying It All Together 38 CMMI for Acquisition Version 1.2 4

  9. Hydrophilic nanoporous polystyrenes and 1,2-polybutadienes

    DEFF Research Database (Denmark)

    Guo, Fengxiao; Jankova Atanasova, Katja; Vigild, Martin Etchells;

    2008-01-01

    Nanoporous polymers from ordered block copolymers having hydrophilic cavity surfaces were successfully prepared by two methodologies: ' 1. Nanoporous polystyrenes fromPtBA-b-PS diblock or PDMS-b-PtBA-b-PS triblock copolymer precursors by atom transfer radical polymerization (ATRP), or combination...... different pathways for the conversion of the double bonds of 1,2-PB to bromoisobutyrate by using one to three steps chemical modification. Grafting polyacrylate layers of PPEGMA, PHEMA etc. onto themon...

  10. Evaluation of the cyclopentane-1,2-dione as a potential bio-isostere of the carboxylic acid functional group.

    Science.gov (United States)

    Ballatore, Carlo; Gay, Bryant; Huang, Longchuan; Robinson, Katie Herbst; James, Michael J; Trojanowski, John Q; Lee, Virginia M-Y; Brunden, Kurt R; Smith, Amos B

    2014-09-01

    Cycloalkylpolyones hold promise in drug design as carboxylic acid bio-isosteres. To investigate cyclopentane-1,2-diones as potential surrogates of the carboxylic acid functional group, the acidity, tautomerism, and geometry of hydrogen bonding of representative compounds were evaluated. Prototypic derivatives of the known thromboxane A2 prostanoid (TP) receptor antagonist, 3-(3-(2-((4-chlorophenyl)sulfonamido)-ethyl)phenyl)propanoic acid, in which the carboxylic acid moiety is replaced by the cyclopentane-1,2-dione unit, were synthesized and evaluated as TP receptor antagonists. Cyclopentane-1,2-dione derivative 9 was found to be a potent TP receptor antagonist with an IC50 value comparable to that of the parent carboxylic acid. These results indicate that the cyclopentane-1,2-dione may be a potentially useful carboxylic acid bio-isostere.

  11. Constructions of Rank Modulation Codes

    CERN Document Server

    Mazumdar, Arya; Zémor, Gilles

    2011-01-01

    Rank modulation is a way of encoding information to correct errors in flash memory devices as well as impulse noise in transmission lines. Modeling rank modulation involves construction of packings of the space of permutations equipped with the Kendall tau distance. We present several general constructions of codes in permutations that cover a broad range of code parameters. In particular, we show a number of ways in which conventional error-correcting codes can be modified to correct errors in the Kendall space. Codes that we construct afford simple encoding and decoding algorithms of essentially the same complexity as required to correct errors in the Hamming metric. For instance, from binary BCH codes we obtain codes correcting $t$ Kendall errors in $n$ memory cells that support the order of $n!/(\\log_2n!)^t$ messages, for any constant $t= 1,2,...$ We also construct families of codes that correct a number of errors that grows with $n$ at varying rates, from $\\Theta(n)$ to $\\Theta(n^{2})$. One of our constr...

  12. James Lee Byars 1/2 an autobiography, sourcebook

    CERN Document Server

    Byars, James Lee; Eleey, Peter

    2014-01-01

    "I see my autobiography as an arbitrary segment of so many pages of time, of things that I have paid attention to at this point in my life," wrote James Lee Byars (1932-1997) in 1969. He was then 37, about half the average male lifespan at the time, and accordingly thought it appropriate to write his "1/2 autobiography." Byars' art ranged from highly refined objects to extremely minimal performance and events, and books, ephemera and correspondence that he distributed widely among friends and colleagues. Today, more than 15 years after his death, assessments of his art must negotiate Byars' performance of his charismatic self in his life and art. For his first major posthumous survey in the US, exhibition curators Magalí Arriola and Peter Eleey decided to produce a catalogue in two "halves," playing on his "1/2 autobiography": a catalogue of the exhibition itself, including new scholarship, and a sourcebook of primary documents. 1/2 an Autobiography, Sourcebook constitutes the latter volume--a reference guid...

  13. Bipartite entanglement in spin-1/2Heisenberg model

    Institute of Scientific and Technical Information of China (English)

    HU Ming-Liang; TIAN Dong-Ping

    2008-01-01

    The bipartite entanglement of the two-and three-spin Heisenberg model was investigated by using the concept of negativity.It is found that for the ground-state entanglement of the two-spin model,the negativity always decreases as B increases if A Δ<y-1,and it may keep a steady value of 0.5in the region of B<J[(Δ+1)2-y2]1/2if Δ>y-1,while for that of the three-spin model,the negativity exhibits square wave structures if y=0 or Δ=0.For thermal states,there are two areas showing entanglement,namely,the main region and the sub-region.The main region exists only when Δ>Δc(Δc1=and(y2-1)/2for the 2-and 3-spin model respectively)and extends in terms of B and T as Δ increases,while the sub-region survives only when y≠0 and shrinks in terms of B and T as Δ increases.

  14. Isomerization and fragmentation pathways of 1,2-azaborine.

    Science.gov (United States)

    Edel, Klara; Fink, Reinhold F; Bettinger, Holger F

    2016-01-05

    The generation of 1,2-azaborine (4), the BN-analogue of ortho-benzyne, was recently achieved by elimination of tert-butyldimethylchlorosilane under the conditions of flash vacuum pyrolysis. The present investigation identifies by computational means pathways for the thermal isomerization and fragmentation of 1,2-azaborine. The computations were performed using single reference (hybrid/density functional, second order Møller-Plesset perturbation, and coupled cluster theories) as well as multiconfiguration methods (complete active space SCF based second order perturbation theory, multireference configuration interaction, and multiconfiguration coupled electron pair approximation) with basis sets up to polarized triple-ζ quality. The 1,2-azaborine is, despite the distortion of its molecular structure, the most stable C4H4BN isomer investigated. The formation of BN-endiyne isomers is highly unfavorable as the identified pathways involve barriers close to 80 kcal mol(-1). The concerted fragmentation to ethyne and 2-aza-3-bora-butadiyne even has a barrier close to 120 kcal mol(-1). The fragmentation of BN-enediynes has energetic requirements similar to enediynes. © 2015 Wiley Periodicals, Inc.

  15. 1,2-dicarbonyl compounds in commonly consumed foods.

    Science.gov (United States)

    Degen, Julia; Hellwig, Michael; Henle, Thomas

    2012-07-18

    1,2-Dicarbonyl compounds, formed from carbohydrates during thermal processing in the course of caramelization and Maillard reactions, are intensively discussed as precursors for advanced glycation endproducts in foods and in vivo. To obtain information about the uptake of individual compounds with commonly consumed foods, a comprehensive analysis of the content of 3-deoxyglucosone (3-DG), 3-deoxygalactosone (3-DGal), and methylglyoxal (MGO) together with 5-hydroxymethylfurfural (HMF) in 173 food items like bakery products, pasta, nonalcoholic and alcoholic beverages, sweet spreads, and condiments was performed. Following suitable cleanup procedures, 1,2-dicarbonyl compounds were quantitated after derivatization with o-phenylenediamine via RP-HPLC with UV detection. 3-DG proved to be the predominant 1,2-dicarbonyl compound with concentrations up to 410 mg/L in fruit juices, 2622 mg/L in balsamic vinegars, and 385 mg/kg in cookies, thus exceeding the corresponding concentrations of HMF. 3-DGal was found to be of relevance in many foods even in the absence of galactose. MGO was only of minor quantitative importance in all foods studied, except for manuka honey. Dietary intake was estimated to range between 20 and 160 mg/day for 3-DG and 5 and 20 mg/day for MGO, respectively.

  16. Constructing an Archive

    DEFF Research Database (Denmark)

    Carbone, Claudia; Wieczorek, Izabela; Francis, Alice;

    2016-01-01

    "Constructing an Archive" contains a collection of student works conducted during the Fall semester of 2015 at the Aarhus School of Architecture, at the master studio Constructing an Archive......."Constructing an Archive" contains a collection of student works conducted during the Fall semester of 2015 at the Aarhus School of Architecture, at the master studio Constructing an Archive....

  17. 美军空天一体武器装备建设对空军的启示%Enlightenment Initiated from the Construction of Air-space Integrated Weapons and Equipment of the United States

    Institute of Scientific and Technical Information of China (English)

    满莉; 何国胤; 石耀鑫

    2012-01-01

    To implement the air-space integrated strategy is a necessity for the air force to accommodate the air-space era, which will surely have a profound effect on the weapons and equipment construction of the air force. By analyzing the current situation and tendency of the development of the US air-space integrated weapons and equipment, four aspects of enlightenment have been drawn so as to provide useful references for the equipment development of air force.%实施空天一体战略是空军适应空天时代发展的客观要求,必将对空军武器装备建设带来深远的影响.在分析美军空天一体武器装备建设现状和发展趋势的基础上,从4个方面阐述了其对空军武器装备建设的启示,旨在为空军武器装备建设提供有益的借鉴.

  18. trans-1,2-Bis(3,5-dimethoxyphenylethene

    Directory of Open Access Journals (Sweden)

    Stefanie Ritter

    2009-09-01

    Full Text Available The title compound, C18H20O4, was prepared in high yield from 3,5-dimethoxystyrene via a Ru-catalysed homo-olefin metathesis. Exclusive formation of the E-configurated isomer was observed. Interestingly, one symmetric unit contains two molecules adopting an s-syn-anti and and an all-s-anti conformation.

  19. The Nation's top 25 construction aggregates producers

    Science.gov (United States)

    Willett, Jason Christopher

    2013-01-01

    U.S. production of construction aggregates in 2011 was 2.17 billion short tons, valued at $17.2 billion, free on board (f.o.b.) at plant. Construction aggregates production decreased by 37 percent, and the associated value decreased by 25 percent, compared with the record highs reported in 2006. In 2011, construction aggregates production increased for the first time since 2006, owing to a very slight increase in the production of both construction sand and gravel and crushed stone. The average unit value, which is the f.o.b. at plant price of a ton of material, increased slightly, but is still less than the average unit value of two years prior.

  20. Electrical and magnetic properties of (BiNa)1/2(FeV)1/2O3

    Indian Academy of Sciences (India)

    S K Bera; Subrat K Barik; R N P Choudhary; P K Bajpai

    2012-02-01

    Potential multiferroic material, (BiNa)1/2(FeV)1/2O3, synthesized using solid-state route is investigated. The phase formation was confirmed by X-ray diffraction and surface morphology by scanning electron microscopy (SEM). Structural data reveal the single phase formation corroborated by SEM. The grain distribution is uniform with an average grain size of 3.6 m. Electrical properties were investigated in a frequency range (1 kHz–1 MHz) by complex impedance spectroscopy (CIS) technique. The material showed negative temperature coefficient of resistance (NTCR) reflecting semiconductor behaviour. A.C. conductivity was found to obey Johnscher’s law. Conductivity mechanism is discussed and activation energy estimated (1.17 eV) for the conduction process is associated with Fe3+ → Fe2+ variable state. The M–H curve showed the presence of ferromagnetism in the studied material.

  1. The electrical properties and relaxation behavior of AgNb1/2Ta1/2O3 ceramic

    Science.gov (United States)

    Prasad, K. Ganga; Niranjan, Manish K.; Asthana, Saket

    2017-02-01

    Polycrystalline AgNb1/2Ta1/2O3 powder was prepared by solid state reaction method. Preliminary x-ray diffractogram analysis of some aspects of crystal structure showed that a single phase compound formed exhibiting a monoclinic system. Impedance spectroscopy showed the presence of both bulk and grain boundary effects in the material. The relaxation behavior was studied by fitting electric modulus with Bergman function confirms us the existence of non-Debye type of relaxation the material. The ac conductivity spectrum obeyed Funke's double power law and fitting in results, the hopping parameters n1,n2 were indicating the existence of small and large range polaron hopping in the material. The band gap of the material 3.02 eV measured by using UV visible spectroscopy.

  2. Quasilocal conservation laws from semicyclic irreducible representations of Uq(sl2 in XXZ spin-1/2 chains

    Directory of Open Access Journals (Sweden)

    Lenart Zadnik

    2016-01-01

    Full Text Available We construct quasilocal conserved charges in the gapless (|Δ|≤1 regime of the Heisenberg XXZ spin-1/2 chain, using semicyclic irreducible representations of Uq(sl2. These representations are characterized by a periodic action of ladder operators, which act as generators of the aforementioned algebra. Unlike previously constructed conserved charges, the new ones do not preserve magnetization, i.e. they do not possess the U(1 symmetry of the Hamiltonian. The possibility of application in relaxation dynamics resulting from U(1-breaking quantum quenches is discussed.

  3. 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...

  4. 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...

  5. 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.

  6. Design and Construction of the Survey and Drawing unit OA′s System Based on B/S Framework%基于B/S结构的测绘单位OA系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    郑建敏; 孙茜

    2011-01-01

    介绍了基于B/S结构的网上办公自动化系统的功能、特点及开发方法。结合测绘生产单位业务管理实际,将计算机与通信技术等紧密结合起来,构建一套统一的办公管理、信息交流及资源共享平台,科学地管理测绘单位各项事务,实现传统办公方式向"无纸化"、"自动化"的网络办公方式的转变,有效地提高测绘单位工作效率和管理水平。%This text has been introduced the function、characteristic and design of B/S′s structure office system on the net.Integrating the military situation of Surveying and Mapping Institute,Combining the technique of modern computer and communication,Build one set of OA′s system by way of managing、information to communicate and resources to partaking,Scientifically being managed surveys and draws the various works of unit,Realize the changing of network office method to "paperlessization" and "automation" of traditional office method,Effectively raise work efficiency and manage level.

  7. Construction of an infectious cDNA clone of avian hepatitis E virus (avian HEV) recovered from a clinically healthy chicken in the United States and characterization of its pathogenicity in specific-pathogen-free chickens.

    Science.gov (United States)

    Kwon, Hyuk Moo; LeRoith, Tanya; Pudupakam, R S; Pierson, F William; Huang, Yao-Wei; Dryman, Barbara A; Meng, Xiang-Jin

    2011-01-27

    A genetically distinct strain of avian hepatitis E virus (avian HEV-VA strain) was isolated from a healthy chicken in Virginia, and thus it is important to characterize and compare its pathogenicity with the prototype strain (avian HEV-prototype) isolated from a diseased chicken. Here we first constructed an infectious clone of the avian HEV-VA strain. Capped RNA transcripts from the avian HEV-VA clone were replication-competent after transfection of LMH chicken liver cells. Chickens inoculated intrahepatically with RNA transcripts of avian HEV-VA clone developed active infection as evidenced by fecal virus shedding, viremia, and seroconversion. To characterize the pathogenicity, RNA transcripts of both avian HEV-VA and avian HEV-prototype clones were intrahepatically inoculated into the livers of chickens. Avian HEV RNA was detected in feces, serum and bile samples from 10/10 avian HEV-VA-inoculated and 9/9 avian HEV-prototype-inoculated chickens although seroconversion occurred only in some chickens during the experimental period. The histopathological lesion scores were lower for avian HEV-VA group than avian HEV-prototype group in the liver at 3 and 5 weeks post-inoculation (wpi) and in the spleen at 3 wpi, although the differences were not statistically significant. The liver/body weight ratio, indicative of liver enlargement, of both avian HEV-VA and avian HEV-prototype groups were significantly higher than that of the control group at 5 wpi. Overall, the avian HEV-VA strain still induces histological liver lesions even though it was isolated from a healthy chicken. The results also showed that intrahepatic inoculation of chickens with RNA transcripts of avian HEV infectious clone may serve as an alternative for live virus in animal pathogenicity studies.

  8. QCD corrections to inclusive $\\Delta S=1,2$ transitions

    OpenAIRE

    Jamin, Matthias

    1994-01-01

    The talk summarises a calculation of the two-point functions for $\\Delta S=1$ current-current and QCD-penguin operators, as well as for the $\\Delta S=2$ operator, at the next-to-leading order. The size of the gluonic corrections to current-current operators is large, providing a qualitative understanding of the observed enhancement in $\\Delta I=1/2$ transitions. In the $\\Delta S=2$ sector the QCD corrections are quite moderate ($\\approx -20\\%$). This work has been done in collaboration with A...

  9. Proper Time for Spin 1/2 Particles

    CERN Document Server

    Kudaka, S; Kudaka, Shoju; Matsumoto, Shuichi

    2005-01-01

    We find a quantum mechanical formulation of proper time for spin 1/2 particles within the framework of the Dirac theory. It is shown that the rate of proper time can be represented by an operator called the ` ` tempo operator'', and that the proper time itself be given by the integral of the expectation value of the operator. The tempo operator has some terms involving the Pauli spin matrices, and the evolution of the proper time is influenced by the spin state via these terms. The relation between the tempo operator and the metric tensor is elucidated.

  10. Properties of the Lambda(1670)(1-)/2 resonance.

    Science.gov (United States)

    Manley, D M; Abaev, V V; Allgower, C E; Bekrenev, V; Briscoe, W J; Clajus, M; Comfort, J R; Craig, K; Grosnick, D; Isenhower, D; Knecht, N; Koetke, D D; Kulbardis, A A; Kozlenko, N G; Kruglov, S; Lolos, G; Lopatin, I V; Manweiler, R; Marusić, A; McDonald, S; Nefkens, B M K; Olmsted, J; Papandreou, Z; Peaslee, D C; Phaisangittisakul, N; Prakhov, S; Price, J W; Ramirez, A F; Sadler, M; Shafi, A; Spinka, H; Stanislaus, T D S; Starostin, A; Staudenmaier, H M; Strakovsky, I I; Supek, I; Tippens, W B

    2002-01-07

    Recently the Crystal Ball Collaboration measured precise new data for the near-threshold reaction K(-)p-->etaLambda, which is dominated by formation of the Lambda(1670)1 / 2(-). In this Letter, we present results of a unitary, multichannel analysis that incorporates the new Crystal Ball data. For our preferred fit, we obtain mass M = 1673+/-2 MeV, width Gamma = 23+/-6 MeV, and elasticity x = 0.37+/-0.07. This elasticity is significantly larger than previously recognized. Resonance parameters of our preferred fit are in striking agreement with the quark-model predictions of Koniuk and Isgur.

  11. Preparation of perfluorinated 1,2,4-oxadiazoles

    Science.gov (United States)

    Kratzer, R. H.; Paciorek, K. J. L.; Ito, T. I.; Rosser, R. W. (Inventor)

    1982-01-01

    Fluorinated alkyl or alkylether 1,2,4 oxadiazole compounds are prepared by cyclizing the corresponding alkyl or alkylether imidoyl amidoximes in vacuo or in an inert atmosphere at a temperature within the range of 40 C to 100 C. for a period of 8 to 144 hours in the presence of an acid compound which can accept ammonia to form a salt. The imidoyl amidoximes usable in this process are either polymeric or nonpolymeric. The products, when polymeric, have excellent heat, chemical and solvent resistance.

  12. Properties of the Λ(1670)1/2- Resonance

    Science.gov (United States)

    Manley, D. M.; Abaev, V. V.; Allgower, C. E.; Bekrenev, V.; Briscoe, W. J.; Clajus, M.; Comfort, J. R.; Craig, K.; Grosnick, D.; Isenhower, D.; Knecht, N.; Koetke, D. D.; Kulbardis, A. A.; Kozlenko, N. G.; Kruglov, S.; Lolos, G.; Lopatin, I. V.; Manweiler, R.; Marušić, A.; McDonald, S.; Nefkens, B. M.; Olmsted, J.; Papandreou, Z.; Peaslee, D. C.; Phaisangittisakul, N.; Prakhov, S.; Price, J. W.; Ramirez, A. F.; Sadler, M.; Shafi, A.; Spinka, H.; Stanislaus, T. D.; Starostin, A.; Staudenmaier, H. M.; Strakovsky, I. I.; Supek, I.; Tippens, W. B.

    2002-01-01

    Recently the Crystal Ball Collaboration measured precise new data for the near-threshold reaction K-p-->ηΛ, which is dominated by formation of the Λ(1670)1/2-. In this Letter, we present results of a unitary, multichannel analysis that incorporates the new Crystal Ball data. For our preferred fit, we obtain mass M = 1673+/-2 MeV, width Γ = 23+/-6 MeV, and elasticity x = 0.37+/-0.07. This elasticity is significantly larger than previously recognized. Resonance parameters of our preferred fit are in striking agreement with the quark-model predictions of Koniuk and Isgur.

  13. Recent advances bioactive 1,2,4-triazole-3-thiones.

    Science.gov (United States)

    Küçükgüzel, Ş Güniz; Çıkla-Süzgün, Pelin

    2015-06-05

    Triazoles are heterocyclic compounds which have a five-membered ring of two carbon atoms and three nitrogen atoms. These structures have been interest in the development of novel compounds with anticonvulsant, antidepressant, antioxidant, anti-inflammatory, analgesic, antinociceptive, antibacterial, antimycobacterial, antifungal, antiviral, anticancer, anti-parasitic, anti-urease and other activities. Therefore, many researchers have synthesized these compounds as target structures and evaluated their biological activities. This review contains various pharmacological activities of 1,2,4-triazole-3-thiones in one place and it is also the milestone for the new research towards this moiety.

  14. Deliverable 1.2.1 Market Analysis and Business Plan

    DEFF Research Database (Denmark)

    Peterson, Carrie Beth

    2009-01-01

    Deliverable 1.2.1 - Market Analysis and Business Plan The main objective of this deliverable is to provide a short overview of 4 communities involved in the pilots, envisaged type of solutions and architectures to be deployed (chapter 2) and market analysis at regional level (chapter 3......) with related business cases. The Market analysis will provide an overview of market requirements, current status and opportunities for the pilot service that will be provided in the context of ISISEMD. This will be realised by performing detailed studies on various sources. Proposals for business modelling...

  15. design, construction design, construction and performance ...

    African Journals Online (AJOL)

    eobe

    1, 2, 3, 4 DEPARTMENT OF MECHANICAL ENGINEERING, AHMADU ... solar stills absorber plate were conceptualized and developed and their effects on the productivity process were ..... Solar Cooker Dish: Design and Simulation” Nigerian.

  16. 反序律B{1,2,i}A{1,2,i}=(AB){1,2,i}i=3,4成立的充要条件%Necessary and sufficient conditions for reverse order laws B{1,2,i}A { 1,2,i} (∈)(AB){1,2,i},i=3,4

    Institute of Scientific and Technical Information of China (English)

    孙萍; 孟令胜

    2011-01-01

    证明两个矩阵乘积的{1,2,3}-逆和{1,2,4}-逆反序律包含关系B{1,2,i}A{1,2,i}(∈)(AB){1,2,i},i=3,4分别等价干等式反序律B{1,2,i}A{1,2,i}=(AB){1,2,i},i=3,4.从而得到上述等式反序律成立的充要条件.%It was verified that the inclusion relationship B{1,2,i}A{1,2,i} (∈)(AB){1,2,i}, i= 3,4 for reverse order laws of {1,2,3}-inverse and {1,2,4}- inverse of the product of two matrixes was respectively equivalent to the identical reverse order laws B{1,2,i}A{1,2,i}=(AB){1,2,i}, i=3,4, so that the necessary and sufficient conditions were obtained for holding the foregoing identical reverse order laws.

  17. 2-Amino-1-(2-carboxylatoethylpyrimidin-1-ium monohydrate

    Directory of Open Access Journals (Sweden)

    Christopher R. Sparrow

    2010-12-01

    Full Text Available In the title structure, C7H9N3O2·H2O, there are two formula units in the asymmetric unit. The molecule is a zwitterion, containing a quaternary N atom and a deprotonated carboxyl group, with C—O distances in the range 1.256 (2–1.266 (3 Å. The two independent molecules form a hydrogen-bonded R22(16 dimer about an approximate inversion center via N—H...O hydrogen bonds, with N...O distances of 2.766 (2 and 2.888 (2 Å. O—H...O hydrogen bonds involving the water molecules and additional N—H...O hydrogen bonds link these dimers, forming double chains.

  18. 1-(2-Bromo-2-deoxy-β-d-xylofuranosyluracil

    Directory of Open Access Journals (Sweden)

    Chun-Feng Wang

    2011-01-01

    Full Text Available In the title compound, C9H11BrN2O5, the ribofuranose ring has a C2-exo, C3-endo twist configuration and is attached to the uracil unit via a β-N1-glycosidic bond. The crystal structure is stabilized by two intermolecular O—H...O interactions and one intermolecular N—H...O interaction.

  19. 1-(2-Naphthyl-3-phenylprop-2-en-1-one

    Directory of Open Access Journals (Sweden)

    Si-Ping Tang

    2009-08-01

    Full Text Available The title compound, C19H14O, contains two independent molecules with the same s-cis conformation for the ketone unit. Both molecules are non-planar with dihedral angles of 51.9 (1 and 48.0 (1° between the benzene ring and the naphthalene ring system. In the crystal, neighboring molecules are stabilized by intermolecular C—H...π interactions, giving a two-dimensional supramolecular array parallel to the ab plane.

  20. 2-Oxo-1,2-dihydroquinoline-4-carboxylic acid monohydrate

    Directory of Open Access Journals (Sweden)

    Yassir Filali Baba

    2016-06-01

    Full Text Available In the title compound, C10H7NO3·H2O, O—H...O hydrogen bonds involving the carboxyl groups, the keto groups and the lattice water molecules form stepped sheets approximately parallel to {010} which are tied together by pairwise N—H...O interactions. The asymmetric unit contains two independent quinolone derivatives and two water molecules, one of which is disordered over two positions, of equal occupancy.

  1. Degradation of 1,1,2,2-Tetrachloroethane by Microbial Consortia in Wetland Sediment: Controls on 1,2-Dichloroethane and Vinyl Chloride Accumulation

    Science.gov (United States)

    Lorah, M. M.; Voytek, M. A.

    2001-05-01

    Concurrent geochemical analyses of porewater and genetic analyses of wetland sediment over time in laboratory microcosm experiments are being used to define biodegradation pathways of 1,1,2,2-tetrachloroethane (PCA) and associated critical microorganisms in anaerobic wetland sediments. These experiments were conducted to better understand factors controlling in situ daughter product distribution as part of a study of natural attenuation of a chlorinated solvent plume that is discharging to a freshwater tidal wetland at Aberdeen Proving Ground, Maryland. Possible biodegradation pathways of PCA under anaerobic conditions include (1) sequential hydrogenolysis of PCA to 1,1,2-trichloroethane (TCA), 1,2-dichloroethane (DCA), chloroethane, and ethane; (2) hydrogenolysis of PCA to TCA followed by dichloroelimination of TCA to vinyl chloride (VC); and (3) dichloroelimination of PCA to cis- and trans-1,2-dichloroethene (DCE) and subsequent hydrogenolysis of DCE to VC. Elucidation of factors controlling the occurrence of these diverse pathways is critical because of differing toxicity and persistence of the daughter products. Microcosm experiments were conducted in March and July 1999 using wetland sediment and porewater collected at two contaminated sites in the study area-one characterized as predominantly methanogenic (WB23) and one characterized as mixed iron-reducing and methanogenic (WB30)-and amended only with PCA or TCA. Microcosm water was analyzed for volatile organic compounds, methane, ferrous iron, and sulfate, while genetic analyses of the corresponding microcosm sediment were used to obtain profiles of bacteria and methanogenic communities at each time step. All PCA-amended microcosms showed simultaneous production of TCA (from hydrogenolysis) and DCE (from dichloroelimination) from day 1. Subsequently, DCA became the predominant daughter product in microcosms constructed with WB23 sediment, which showed high methane production throughout the experiment

  2. Pharmacokinetics of Malonato (1,2 diaminocyclohexane) platinum.

    Science.gov (United States)

    Kelsen, D P; Ribaud, P; Alcock, N; Burchenal, J H; Young, C W; Mathe, G

    1981-01-01

    Malonato-(1,2 diaminocyclohexane) platinum (MP) is a new platinum analog currently undergoing phase I clinical trials. Using flameless atomic absorption spectrophotometry, the pharmacokinetics of MP were studied at five dosage levels. The drug was given as a prolonged intravenous infusion, lasting from 6 to 24 hours. Peak plasma platinum concentrations (Pt) were seen at the end of the infusion, and ranged from 1.1 microgram/ml when 3 mg/kg was given to 14-20.5 micrograms/ml at the 24-mg/kg level. Following completion of the infusion, a prolonged T1/2 beta (mean 63.5 hours) was noted. The percentage of free:total platinum was high (90-95%) at the beginning of the infusion but fell rapidly, to only 15-21% at the end of the 24-hour infusions. Urinary excretion accounted for 16-37.5% of the total administered dose. MP appears to have several pharmacokinetic features in common with cisplatin: rapid binding to protein, a prolonged terminal phase half-life involving primarily bound platinum, and incomplete excretion by the kidney.

  3. LBNF 1.2 MW TARGET: CONCEPTUAL DESIGN & FABRICATION

    Energy Technology Data Exchange (ETDEWEB)

    Crowley, Cory F. [Fermilab; Ammigan, K. [Fermilab; Anderson, K. [Fermilab; Hartsell, B. [Fermilab; Hurh, P. [Fermilab; Hylen, J. [Fermilab; Zwaska, R. [Fermilab

    2015-06-29

    Fermilab’s Long-Baseline Neutrino Facility (LBNF) will utilize a modified design based on the NuMI low energy target that is reconfigured to accommodate beam operation at 1.2 MW. Achieving this power with a graphite target material and ancillary systems originally rated for 400 kW requires several design changes and R&D efforts related to material bonding and electrical isolation. Target cooling, structural design, and fabrication techniques must address higher stresses and heat loads that will be present during 1.2 MW operation, as the assembly will be subject to cyclic loads and thermal expansion. Mitigations must be balanced against compromises in neutrino yield. Beam monitoring and subsystem instrumentation will be updated and added to ensure confidence in target positioning and monitoring. Remote connection to the target hall support structure must provide for the eventual upgrade to a 2.4 MW target design, without producing excessive radioactive waste or unreasonable exposure to technicians during reconfiguration. Current designs and assembly layouts will be presented, in addition to current findings on processes and possibilities for prototype and final assembly fabrication.

  4. Enthalpy and Heat Capacity Data for 1,2-Cyclohexanediol

    Institute of Scientific and Technical Information of China (English)

    周彩荣; 章亚东; 蒋登高

    2003-01-01

    The thermodynamic properties of different geometric structures of 1,2-cyclohexanediol which were rarely reported in literature, such as combustion enthalpy, formation enthalpy, melting enthalpy and heat capacities, were determined by NETZSCH DSC 204 Scanning Calorimeter. The relationship between the melting point and the composition for the mixture system of cis-l,2-cyclohexanediol and trans-l,2-cyclohexanediol was investigated and corresponding phase diagram was obtained. "The melting enthalpies of both cis-l,2-cyclohexanediol and trans-l,2-cyclohexanediol are 20.265 kJ·mo1-1 and 16.368 kJ·mo1-1 respectively. The standard combustion enthalpies of cis- and trans-l,2-cyclohexaneddiol were determined by calorimeter. They are respectively -3507.043kJ·mo1-1 and -3497.8kJ·mo1-1 at 298.15 K.The standard formation enthalpies are respectively 568.997kJ·mol-1 and 578.240kJ·mol-1 for cis- and trans-1,2-cyclohexaneddiol.

  5. A non-perturbative real-space renormalization group scheme for the spin-1/2 XXX Heisenberg model

    OpenAIRE

    Degenhard, Andreas

    1999-01-01

    In this article we apply a recently invented analytical real-space renormalization group formulation which is based on numerical concepts of the density matrix renormalization group. Within a rigorous mathematical framework we construct non-perturbative renormalization group transformations for the spin-1/2 XXX Heisenberg model in the finite temperature regime. The developed renormalization group scheme allows for calculating the renormalization group flow behaviour in the temperature depende...

  6. TRIP RATES FOR CONDOMINIUM CONSTRUCTION PROJECT

    OpenAIRE

    Wirach Hirun

    2015-01-01

    The number of large scale condominium construction projects had dramatically increased in Bangkok. Many projects had occurred in either densely populated areas or in central business districts, where traffic conditions were usually highly congested. To prevent traffic problems, a traffic impact study must be prepared and submitted for review by concerned public authorities. Unit trip generation rates were important data in traffic impact analysis. Without accurate unit trip generation rates, ...

  7. (1RS,2RS,3RS-1,2-Dimethoxy-3-methyl-2-phenyl-1-(2-thienylcyclopropane

    Directory of Open Access Journals (Sweden)

    Laura Torre-Fernández

    2009-04-01

    Full Text Available In the title compound, C16H18O2S, a new cis-1,2-dimethoxycyclopropane, the two methoxy groups are in a cis configuration and in trans positions with respect to the H atom and the phenyl and thienyl rings on the cyclopropyl group. The molecular packing is dominated by weak intermolecular C—H...O interactions, allowing the formation of zigzag chains propagating parallel to the c axis. The dihedral angle between the aromatic rings is 86.12 (8°.

  8. All 1/2 BPS solutions of IIB supergravity with SO(4)xSO(4) isometry

    Energy Technology Data Exchange (ETDEWEB)

    Liu, James T. [Michigan Center for Theoretical Physics, Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109-1040 (United States); Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106 (United States)], E-mail: jimliu@umich.edu; Sabra, Wafic [Centre for Advanced Mathematical Sciences and Physics Department, American University of Beirut (Lebanon)

    2007-12-13

    In (hep-th/0409174), Lin, Lunin and Maldacena constructed a set of regular 1/2 BPS geometries in IIB theory. These remarkable 'bubbling AdS' geometries have a natural interpretation as duals of chiral primary operators with weight {delta}=J in N=4 super-Yang-Mills theory. Although these geometries have been assumed to be complete, from a purely supergravity point of view, additional 1/2 BPS configurations may potentially exist with a preferred null isometry. We explore this possibility and prove that the only additional class of 1/2 BPS solutions with SO(4)xSO(4) isometry are the familiar IIB pp-waves.

  9. Validating MEDIQUAL Constructs

    Science.gov (United States)

    Lee, Sang-Gun; Min, Jae H.

    In this paper, we validate MEDIQUAL constructs through the different media users in help desk service. In previous research, only two end-users' constructs were used: assurance and responsiveness. In this paper, we extend MEDIQUAL constructs to include reliability, empathy, assurance, tangibles, and responsiveness, which are based on the SERVQUAL theory. The results suggest that: 1) five MEDIQUAL constructs are validated through the factor analysis. That is, importance of the constructs have relatively high correlations between measures of the same construct using different methods and low correlations between measures of the constructs that are expected to differ; and 2) five MEDIQUAL constructs are statistically significant on media users' satisfaction in help desk service by regression analysis.

  10. Organizational Behaviour in Construction

    DEFF Research Database (Denmark)

    Kreiner, Kristian

    2013-01-01

    Review of: Organizational Behaviour in Construction / Anthony Walker (Wiley-Blackwell,2011 336 pp)......Review of: Organizational Behaviour in Construction / Anthony Walker (Wiley-Blackwell,2011 336 pp)...

  11. Sustainable advanced construction technologies

    CSIR Research Space (South Africa)

    Kuchena, JC

    2009-11-01

    Full Text Available Advanced Construction Technologies (ACTs) are set to become the sustainable mainstay of the construction industry due to the demand for innovative housing solutions. Like most emerging economies, South Africa from a historical perspective and global...

  12. Professional entrepreneurial identity construction

    DEFF Research Database (Denmark)

    Ramsgaard, Michael Breum

    2014-01-01

    The present study investigates the construction of a professional identity as an entrepreneur in a sample of people with educational background in nutrition and health. The study examines the connection between professional identity construction and entrepreneurial business emergence using...

  13. USAID Construction Assessment

    Data.gov (United States)

    US Agency for International Development — The USAID construction assessment is a survey of the character, scope, value and management of construction activities supported by USAID during the period from...

  14. Skin Problems in Construction

    Science.gov (United States)

    ... you use at work. Find out more about construction hazards. To receive copies of this Hazard Alert ... index.html Physician’s Alert: Occupational Contact Dermatitis Among Construction Workers – give this Alert to your doctor http:// ...

  15. Construction Sector (NAICS 23)

    Science.gov (United States)

    Find environmental regulatory information for the construction sector, including the construction of buildings or engineering projects. This includes RCRA information for hazardous waste, refrigeration compliance, asbestos, effluent guidelines & lead laws

  16. 1-(2-Bromophenylethane-1,2-diyl 1,1′-biphenyl-2,2′-dicarboxylate

    Directory of Open Access Journals (Sweden)

    Dongdong Wu

    2012-05-01

    Full Text Available In the title compound, C22H15BrO4, the bromobenzene ring is inclined at dihedral angles of 23.87 (11 and 52.37 (11° with respect to the planes of the two benzene rings. The two benzene rings of the biphenyl unit form a dihedral angle of 49.08 (11°. In the crystal, molecules are linked into [100] chains by C—H...O hydrogen bonds.

  17. Specification of materials Data for Fire Safety Calculations based on ENV 1992-1-2

    DEFF Research Database (Denmark)

    Hertz, Kristian Dahl

    1997-01-01

    of constructions of any concrete exposed to any time of any fire exposure can be calculated.Chapter 4.4 provides information on what should be observed if more general calculation methods are used.Annex A provides some additional information on materials data. This chapter is not a part of the code......The part 1-2 of the Eurocode on Concrete deals with Structural Fire Design.In chapter 3, which is partly written by the author of this paper, some data are given for the development of a few material parameters at high temperatures. These data are intended to represent the worst possible concrete...... to experience form tests on structural specimens based on German siliceous concrete subjected to Standard fire exposure until the time of maximum gas temperature.Chapter 4.3, which is written by the author of this paper, provides a simplified calculation method by means of which the load bearing capacity...

  18. so(D−1,1)⊕so(D−1,2) algebras and gravity

    Energy Technology Data Exchange (ETDEWEB)

    Salgado, P.; Salgado, S.

    2014-01-20

    It is shown that using a specific semigroup, the S-expansion of the AdS Lie algebra leads to a generalization of the so(D−1,1)⊕so(D−1,2) algebras, which are called generalized AdS-Lorentz algebras. The generalized Inönü–Wigner contraction of the generalized AdS-Lorentz algebras provides the so-called B{sub m} algebras. The B{sub 4} algebra corresponds to the so-called Maxwell algebra. The B{sub m} algebras can be also obtained by S-expansion of the AdS Lie algebra when we use a semigroup endowed with a multiplication law different from the law of multiplication of semigroup above. Chern–Simons as well as Born–Infeld gravities actions, which in a certain limit contain the Einstein–Hilbert Lagrangian with a cosmological term, are also constructed.

  19. An extension of the (1,2)-symplectic property for f-structures on flag manifolds

    Energy Technology Data Exchange (ETDEWEB)

    Cohen, N [Instituto de Matematica, Estatistica e Computacao Cientifica, Campinas (Brazil); Pinzon, S [Universidad Industrial de Santander, Bucaramanga (Colombia)

    2008-06-30

    The (1,1)-symplectic property for f-structures on a complex Riemannian manifold M is a natural extension of the (1,2)-symplectic property for almost-complex structures on M, and arises in the analysis of complex harmonic maps with values in M. A characterization of this property in combinatorial terms is known only for almost-complex structures or when M is the classical flag manifold F(n). In this paper, we remove these restrictions by considering an intersection graph defined in terms of the corresponding root system. We prove that the f-structure is (1,1)-symplectic exactly when the intersection graph is locally transitive. Our intersection graph construction may be helpful in characterizing many other Kaehler-like properties on complex flag manifolds.

  20. Fabry-Perot Observations of HH 1/2

    Directory of Open Access Journals (Sweden)

    A. Riera

    2005-01-01

    Full Text Available Presentamos nuevas observaciones Fabry-Perot del sistema HH1/2 en la l nea de H. Se han obtenidos los perfiles de las l neas, y los mapas de velocidad radial y de dispersi n de velocidades a partir de los canales de velocidad de los objetos HH 1 y HH 2. La distribuci on espacial de la velocidad radial de ambos objetos (HH 1, HH 2 presenta material desplazado al rojo hacia la fuente, y material desplazado al azul alej ndose de la fuente. Un modelo que contempla la presencia de emisi n directa+dispersada con tres condensaciones emisoras reproduce cualitativamente la distribuci n espacial de la velocidad radial y de la dispersi n de velocidades de HH 2.

  1. Enzymatic Macrocyclization of 1,2,3-Triazole Peptide Mimetics.

    Science.gov (United States)

    Oueis, Emilia; Jaspars, Marcel; Westwood, Nicholas J; Naismith, James H

    2016-05-04

    The macrocyclization of linear peptides is very often accompanied by significant improvements in their stability and biological activity. Many strategies are available for their chemical macrocyclization, however, enzyme-mediated methods remain of great interest in terms of synthetic utility. To date, known macrocyclization enzymes have been shown to be active on both peptide and protein substrates. Here we show that the macrocyclization enzyme of the cyanobactin family, PatGmac, is capable of macrocyclizing substrates with one, two, or three 1,4-substituted 1,2,3-triazole moieties. The introduction of non-peptidic scaffolds into macrocycles is highly desirable in tuning the activity and physical properties of peptidic macrocycles. We have isolated and fully characterized nine non-natural triazole-containing cyclic peptides, a further ten molecules are also synthesized. PatGmac has now been shown to be an effective and versatile tool for the ring closure by peptide bond formation.

  2. Deliverable 1.2.1 Market Analysis and Business Plan

    DEFF Research Database (Denmark)

    Peterson, Carrie Beth

    2009-01-01

    Deliverable 1.2.1 - Market Analysis and Business Plan The main objective of this deliverable is to provide a short overview of 4 communities involved in the pilots, envisaged type of solutions and architectures to be deployed (chapter 2) and market analysis at regional level (chapter 3......) with related business cases. The Market analysis will provide an overview of market requirements, current status and opportunities for the pilot service that will be provided in the context of ISISEMD. This will be realised by performing detailed studies on various sources. Proposals for business modelling...... and business cases (chapter 4) will rely on the concept of value chains. Value chains typically consist of several providers, which together produce a complex product or service....

  3. Conformation of 1,2-Dimethoxyethane in Water

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    To understand the conformation of 1,2-dimethoxyethane (DME) in water, a system of two kinds of molecules, DME and H2O, was focused. The interaction of various conformers of DME with water was studied by means of ab initio molecular orbital calculation with 6-31G(d)basis set. It is shown that there are two forms of interactions between the two molecules in the sys tem, the close touched (H2O attaches to the two oxygen atoms of DME) and the open touched (H2O attaches to one oxygen atom of DME) structures. The conformation of DME is remark ably influenced by the interactions. Instead the ttt conformer is preferred in the gas state, with a close touched H2O the tgt conformer becomes the most stable one. The obtained hydration ener gies show that the stabilized order of DME conformers by water is tgt>tgg'>ttt.

  4. Vacuum polarization in $d+{1/2}$ dimensions

    CERN Document Server

    Fosco, C D; Roditi, I

    2004-01-01

    We study the main properties of the one-loop vacuum polarization function ($\\Pi_{\\alpha \\beta}$) for spinor $QED$ in `$d + {1/2}$ dimensions', i.e., with fields defined on ${\\mathcal M} \\subset {\\mathbb R}^{d+1}$ such that ${\\mathcal M} = \\{(x_0,...,x_d) | x_{d}\\geq 0 \\}$, with bag-like boundary conditions on the boundary $\\partial{\\mathcal M} = \\{(x_0,...,x_d) | x_{d}= 0 \\}$. We obtain an exact expression for the induced current due to an external constant electric field normal to the boundary. We show that, for the particular case of 2+1 dimensions, there is a transverse component for the induced current, which is localized on a region close to $\\partial{\\mathcal M}$. This current is a parity breaking effect purely due to the boundary.

  5. Synthesis and Antimicrobial Activity of 1,2-Benzothiazine Derivatives

    Directory of Open Access Journals (Sweden)

    Chandani Patel

    2016-06-01

    Full Text Available A number of 1,2-benzothiazines have been synthesized in a three-step process. Nine chalcones 1–9 bearing methyl, fluoro, chloro and bromo substituents were chlorosulfonated with chlorosulfonic acid to generate the chalcone sulfonyl chlorides 10–18. These were converted to the dibromo compounds 19–27 through reaction with bromine in glacial acetic acid. Compounds 19–27 were reacted with ammonia, methylamine, ethylamine, aniline and benzylamine to generate a library of 45 1,2-benzothiazines 28–72. Compounds 28–72 were evaluated for their antimicrobial activity using broth microdilution techniques against two Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus and two Gram-negative bacteria (Proteus vulgaris and Salmonella typhimurium. The results demonstrated that none of the compounds showed any activity against Gram-negative bacteria P. vulgaris and S. typhimurium; however, compounds 31, 33, 38, 43, 45, 50, 53, 55, 58, 60, 63 and 68 showed activity against Gram-positive bacteria Bacillus subtilis and Staphylococcous aureus. The range of minimum inhibitory concentration (MIC and minimum bactericidal concentration (MBC was 25–600 µg/mL, though some of the MIC and MBC concentrations were high, indicating weak activity. Structure activity relationship studies revealed that the compounds with a hydrogen atom or an ethyl group on the nitrogen of the thiazine ring exerted antibacterial activity against Gram-positive bacteria. The results also showed that the compounds where the benzene ring of the benzoyl moiety contained a methyl group or a chlorine or bromine atom in the para position showed higher antimicrobial activity. Similar influences were identified where either a bromine or chlorine atom was in the meta position.

  6. N,N′-Bis(3-bromobenzylideneethane-1,2-diamine

    Directory of Open Access Journals (Sweden)

    Hoong-Kun Fun

    2008-08-01

    Full Text Available The molecule of the title Schiff base compound, C16H14Br2N2, lies across a crystallographic inversion centre. The C=N bond adopts a trans configuration. The imino group is coplanar with the benzene ring. Within the molecule, the planar units are parallel, but extend in opposite directions from the dimethylene bridge. The interesting feature of the structure is the weak Br...Br interaction [3.7501 (2 Å] linking the molecules into chains along the c axis. These chains are stacked along the b axis.

  7. C60 1,1,2,2-tetrachloroethylene tetrasolvate

    Directory of Open Access Journals (Sweden)

    C. Arunkumar

    2008-01-01

    Full Text Available In the title complex, C60·4C2Cl4, the C60 molecule is located on an inversion centre and there are two tetrachloroethylene (TCE molecules in the asymmetric unit. Both TCE molecules show positional disorder, with occupancy ratios of 0.75:0.25 and 0.56:0.44. Four fullerene C atoms form short contacts [3.208 (17 and 3.223 (17 Å] with the centres of the TCE double bonds, indicating that C60–solvent interactions are largely π–π in nature.

  8. Green synthesis and characterization of Ag1/2Al1/2TiO3 nanoceramics

    Directory of Open Access Journals (Sweden)

    Kumar Sandeep

    2015-03-01

    Full Text Available Single phase silver aluminum titanate (Ag1/2Al1/2TiO3, later called AAT, nanoceramic powder (particle size 2 to 7.5 nm was synthesized by a low-cost, green and reproducible tartaric acid gel process. X-ray, FT-IR, energy dispersive X-ray and high resolution transmission electron microscopy analyses were performed to ascertain the formation of AAT nanoceramics. X-ray diffraction data analysis indicated the formation of monoclinic structure having the space group P2/m(10. UV-Vis study revealed the surface plasmon resonance at 296 nm. Dielectric study revealed that AAT nanoceramics could be a suitable candidate for capacitor applications and meets the specifications for “Z7R” of Class I dielectrics of Electronic Industries Association. Complex impedance analyses suggested the dielectric relaxation to be of non-Debye type. To find a correlation between the response of the real system and idealized model circuit composed of discrete electrical components, the model fittings were performed using the impedance data. Electric modulus studies supported the hopping type of conduction in AAT. The correlated barrier hopping model was employed to successfully explain the mechanism of charge transport in AAT. The ac conductivity data were used to evaluate the density of states at Fermi level and minimum hopping length of the compound.

  9. Características de Carcaça e da Carne de Novilhos Filhos de Vacas 1/2 Nelore 1/2 Charolês e 1/2 Charolês 1/2 Nelore Acasaladas com Touros Charolês ou Nelore Carcass and Meat Characteristics of Steers Produced by 1/2 Nellore 1/2 Charolais and 1/2 Charolais 1/2 Nellore Cows Mated with Charolais and Nellore Bulls

    Directory of Open Access Journals (Sweden)

    Fabiano Nunes Vaz

    2002-07-01

    Full Text Available Este experimento foi conduzido com o objetivo de avaliar o efeito do cruzamento entre vacas 1/2 Nelore 1/2 Charolês com touros Charolês e 1/2 Charolês 1/2 Nelore com touros Nelore, sobre as características de carcaça e da carne de novilhos oriundos desses acasalamentos, abatidos aos dois anos de idade. Foram utilizados 80 novilhos 3/4 Nelore (N 1/4 Charolês (C e 136 novilhos 3/4 C 1/4 N. Os dados foram coletados de setembro de 1986 a dezembro de 1998. O modelo estatístico utilizado incluiu os efeitos classificatórios de grupo contemporâneo, idade da vaca e composição racial, bem como o efeito da idade do animal ao abate como covariável. Os novilhos 3/4 C 1/4 N foram superiores em peso de fazenda (468 contra 448 kg, conformação de carcaça (11,3 contra 10,4 pontos, porcentagem de músculo (66,9 contra 64,8%, área de Longissimus dorsi (69,5 contra 64,7 cm², área de Longissimus dorsi ajustada para o peso de carcaça fria (27,9 contra 26,6 cm², comprimento de carcaça (126 contra 123 cm, perímetro de braço (36,5 contra 35,4 cm e maciez da carne (6,50 contra 5,20 pontos, enquanto os 3/4 N 1/4 C apresentaram maiores rendimento de carcaça (54,6 contra 53,7%, comprimento de perna (74,0 contra 72,0 cm e de braço (41,5 contra 39,7 cm, espessura de gordura subcutânea (3,29 contra 2,70 mm e porcentagem de gordura na carcaça (19,5 contra 17,8%. Não foi verificada diferença significativa para peso de carcaça fria, cor, textura, marmoreio, palatabilidade e suculência da carne.The objective of the experiment was to evaluate the carcass and meat characteristics of two year old steers, produced by the mating of 1/2 Nellore 1/2 Charolais cows with Charolais bulls and by mating 1/2 Charolais 1/2 Nellore cows with Nellore bulls. Eighty 3/4 Nellore 1/4 Charolais (NC and 136 3/4 Charolais 1/4 Nellore steers were used. The data were collected from September 1986 to December 1998. In the statistical model were included the contemporary group

  10. Component School Construction Program.

    Science.gov (United States)

    New Brunswick Dept. of Economic Growth, Fredericton.

    In 1968, the Province of New Brunswick initiated a three-phase program to provide for elementary school facilities, employing a component systems approach to their construction. This booklet describes briefly the planning and construction of these schools, and provides graphic and photographic records of the construction in progress as well as of…

  11. "Task" as Research Construct

    Science.gov (United States)

    Seedhouse, Paul

    2005-01-01

    The article examines "task" as research construct as predominantly conceived in terms of task-as-workplan in the task-based learning/second language acquisition literature. It is suggested that "task" has weak construct validity and ontology in an overwhelmingly quantitative paradigm because the construct has a "split personality."…

  12. Personality Constructs and Measures

    Science.gov (United States)

    Teglasi, Hedwig; Simcox, April G.; Kim, Na-Young

    2007-01-01

    A psychological construct, such as personality, is an abstraction that is not directly seen but inferred through observed regularities in cognitive, affective, and behavioral responses in various settings. Two assumptions give meaning to the idea of construct validity. First, constructs represent real phenomena that exist apart from the potential…

  13. Construction and Demolition Waste

    DEFF Research Database (Denmark)

    Christensen, Thomas Højlund; Andersen, L.

    2011-01-01

    Construction and demolition waste (C&D waste) is the waste generated during the building, repair, remodeling or removal of constructions. The constructions can be roads, residential housing and nonresidential buildings. C&D waste has traditionally been considered without any environmental problems...

  14. A Duplicate Construction Experiment.

    Science.gov (United States)

    Bridgeman, Brent

    This experiment was designed to assess the ability of item writers to construct truly parallel tests based on a "duplicate-construction experiment" in which Cronbach argues that if the universe description and sampling are ideally refined, the two independently constructed tests will be entirely equivalent, and that within the limits of item…

  15. [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…

  16. [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…

  17. [Cu4OCl6(DABCO)2]·0.5DABCO·4CH3OH (“MFU-5”): Modular synthesis of a zeolite-like metal-organic framework constructed from tetrahedral {Cu4OCl6} secondary building units and linear organic linkers

    Science.gov (United States)

    Liu, Ying-Ya; Grzywa, Maciej; Weil, Matthias; Volkmer, Dirk

    2010-01-01

    A novel metal-organic framework (MOF) based on a tetranuclear copper cluster and a linear organic ligand formulated as [Cu 4OCl 6(DABCO) 2] ·0.5DABCO ·4CH 3OH (denoted as MFU-5, MFU=Metal-Organic Framework, Ulm University; DABCO=1,4-diazabicyclo[2.2.2]octane), was prepared via solvothermal synthesis. In contrast with common MOF synthesis strategies, MFU-5 is assembled from pre-defined molecular secondary building units, i.e. {Cu 4OCl 6} moieties, which become the nodes of the coordination framework. The title compound was characterized by single crystal X-ray diffraction, variable temperature powder diffraction (VT-XRPD), thermal analysis, as well as IR- and UV/Vis spectroscopy. Crystal data for MFU-5: hexagonal, P6/ mcc (no. 192), a=25.645(9), c=17.105(11) Å, V=9742(8) Å 3, Z=12, 1690 structure factors, R[ F2>2 σ( F2)]=0.049. MFU-5 is a 3D metal-organic framework with 1D channels running along the c-axis hosting DABCO and methanol solvent molecules. The framework displays a zeolite-like structure constructed from mso cages, which represents the composite building units in the zeolites SSF, MSO and SZR. Two-fold interpenetration is observed between these building units. TG/DTA-MS and VT-XRPD characterization reveal a stepwise release of methanol and DABCO molecules upon heating, eventually resulting in a structural change into a non-porous material.

  18. Benzo[ d ][1,2,3]thiadiazole (isoBT): Synthesis, Structural Analysis, and Implementation in Semiconducting Polymers

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Zhihua; Brown, Jennifer; Drees, Martin; Seger, Mark; Hu, Yan; Xia, Yu; Boudinet, Damien; McCray, Meko; Delferro, Massimiliano; Marks, Tobin J.; Liao, Chuang-Yi; Ko, Chung-Wen; Chang, Yi-Ming; Facchetti, Antonio

    2016-09-13

    Benzo[d][2,1,3]thiadiazole (BT) is a markedly electron-deficient heterocycle widely employed in the realization of organic semiconductors for applications spanning transistors, solar cells, photodetectors, and thermoelectrics. In this contribution, we implement the corresponding isomer, benzo[d][1,2,3]thiadiazole (isoBT), along with new 6-fluoroisoBT and 5,6-difluoro-isoBT units as synthons for constructing alternating copolymers with tetrathiophene (P1-P3). New isoBT-based small molecules as well as the corresponding BTquaterthiophene based polymers (P4-P6) are synthesized and characterized to probe architectural, electronic structural, and device performance differences between the two families. The results demonstrate that isoBT complements BT in enabling highperformance optoelectronic semiconductors with P3 exhibiting hole mobilities surpassing 0.7 cm2/(V s) in field-effect transistors and power conversion efficiencies of 9% in bulk-heterojunction solar cells.

  19. A (1 + 2-Dimensional Simplified Keller–Segel Model: Lie Symmetry and Exact Solutions. II

    Directory of Open Access Journals (Sweden)

    Roman Cherniha

    2017-01-01

    Full Text Available A simplified Keller–Segel model is studied by means of Lie symmetry based approaches. It is shown that a (1 + 2-dimensional Keller–Segel type system, together with the correctly-specified boundary and/or initial conditions, is invariant with respect to infinite-dimensional Lie algebras. A Lie symmetry classification of the Cauchy problem depending on the initial profile form is presented. The Lie symmetries obtained are used for reduction of the Cauchy problem to that of (1 + 1-dimensional. Exact solutions of some (1 + 1-dimensional problems are constructed. In particular, we have proved that the Cauchy problem for the (1 + 1-dimensional simplified Keller–Segel system can be linearized and solved in an explicit form. Moreover, additional biologically motivated restrictions were established in order to obtain a unique solution. The Lie symmetry classification of the (1 + 2-dimensional Neumann problem for the simplified Keller–Segel system is derived. Because Lie symmetry of boundary-value problems depends essentially on geometry of the domain, which the problem is formulated for, all realistic (from applicability point of view domains were examined. Reduction of the the Neumann problem on a strip is derived using the symmetries obtained. As a result, an exact solution of a nonlinear two-dimensional Neumann problem on a finite interval was found.

  20. Preliminary site description Simpevarp subarea - version 1.2

    Energy Technology Data Exchange (ETDEWEB)

    Winberg, Anders (ed.)

    2005-04-01

    The objectives of the version 1.2 site descriptive modelling (SDM) of the Simpevarp subarea are to produce and document an integrated description of the site and its regional environments based on the site-specific data available from the initial site investigations and to give recommendations on continued investigations on a continuous basis. The modelling work is based on primary data available at the time of the data freeze for Simpevarp 1.2, April 1, 2004. The local scale model area (24 km{sup 2}) for the Simpevarp 1.2 modelling encompasses both the Simpevarp and Laxemar subareas. The local model area is located in the centre of a regional scale model area (273 km{sup 2}). Surface ecosystem models in terms of pools and fluxes of carbon have been developed for the terrestrial (e.g. plants and animals) and limnic (e.g. algae and fish) systems using the Lake Frisksjoen drainage area. Furthermore, a first marine ecosystem model has been developed for the Basin Borholmsfjaerden. Three principal lithological domains have been defined in the subarea, an A domain that is dominated by the Aevroe granite, a domain B that is dominated by the fine-grained dioritoid, a C domain that is characterised by a mixture of of Aevroe granite and quartz monzodiorite. A fourth domain is made up a few scattered domains of diorite to gabbro. In total, 22 deformation zones with high confidence of occurrence have been interpreted in the local scale model area. The understanding of the interpreted deformation zones of the Simpevarp subarea is considered adequate to make a preliminary assessment of available storage volumes for a deep repository. High rock stresses do not appear to be a major concern for the Simpevarp subarea. The magnitude of the maximum principal stress at 500 m in the Simpevarp subarea is estimated at 10-22 MPa. The analysis of the thermal conductivity has developed considerably since Simpevarp 1.1. In terms of interpreted mean values for the identified lithological

  1. Preliminary site description Simpevarp subarea - version 1.2

    Energy Technology Data Exchange (ETDEWEB)

    Winberg, Anders (ed.)

    2005-04-01

    The objectives of the version 1.2 site descriptive modelling (SDM) of the Simpevarp subarea are to produce and document an integrated description of the site and its regional environments based on the site-specific data available from the initial site investigations and to give recommendations on continued investigations on a continuous basis. The modelling work is based on primary data available at the time of the data freeze for Simpevarp 1.2, April 1, 2004. The local scale model area (24 km{sup 2}) for the Simpevarp 1.2 modelling encompasses both the Simpevarp and Laxemar subareas. The local model area is located in the centre of a regional scale model area (273 km{sup 2}). Surface ecosystem models in terms of pools and fluxes of carbon have been developed for the terrestrial (e.g. plants and animals) and limnic (e.g. algae and fish) systems using the Lake Frisksjoen drainage area. Furthermore, a first marine ecosystem model has been developed for the Basin Borholmsfjaerden. Three principal lithological domains have been defined in the subarea, an A domain that is dominated by the Aevroe granite, a domain B that is dominated by the fine-grained dioritoid, a C domain that is characterised by a mixture of of Aevroe granite and quartz monzodiorite. A fourth domain is made up a few scattered domains of diorite to gabbro. In total, 22 deformation zones with high confidence of occurrence have been interpreted in the local scale model area. The understanding of the interpreted deformation zones of the Simpevarp subarea is considered adequate to make a preliminary assessment of available storage volumes for a deep repository. High rock stresses do not appear to be a major concern for the Simpevarp subarea. The magnitude of the maximum principal stress at 500 m in the Simpevarp subarea is estimated at 10-22 MPa. The analysis of the thermal conductivity has developed considerably since Simpevarp 1.1. In terms of interpreted mean values for the identified lithological

  2. Engineering a cyanobacterium as the catalyst for the photosynthetic conversion of CO2 to 1,2-propanediol

    Directory of Open Access Journals (Sweden)

    Li Han

    2013-01-01

    Full Text Available Abstract Background The modern society primarily relies on petroleum and natural gas for the production of fuels and chemicals. One of the major commodity chemicals 1,2-propanediol (1,2-PDO, which has an annual production of more than 0.5 million tons in the United States, is currently produced by chemical processes from petroleum derived propylene oxide, which is energy intensive and not sustainable. In this study, we sought to achieve photosynthetic production of 1,2-PDO from CO2 using a genetically engineered cyanobacterium Synechococcus elongatus PCC 7942. Compared to the previously reported biological 1,2-PDO production processes which used sugar or glycerol as the substrates, direct chemical production from CO2 in photosynthetic organisms recycles the atmospheric CO2 and will not compete with food crops for arable land. Results In this study, we reported photosynthetic production of 1,2-PDO from CO2 using a genetically engineered cyanobacterium Synechococcus elongatus PCC 7942. Introduction of the genes encoding methylglyoxal synthase (mgsA, glycerol dehydrogenase (gldA, and aldehyde reductase (yqhD resulted in the production of ~22mg/L 1,2-PDO from CO2. However, a comparable amount of the pathway intermediate acetol was also produced, especially during the stationary phase. The production of 1,2-PDO requires a robust input of reducing equivalents from cellular metabolism. To take advantage of cyanobacteria’s NADPH pool, the synthetic pathway of 1,2-PDO was engineered to be NADPH-dependent by exploiting the NADPH-specific secondary alcohol dehydrogenases which have not been reported for 1,2-PDO production previously. This optimization strategy resulted in the production of ~150mg/L 1,2-PDO and minimized the accumulation of the incomplete reduction product, acetol. Conclusion This work demonstrated that cyanobacteria can be engineered as a catalyst for the photosynthetic conversion of CO2 to 1,2-PDO. This work also characterized two NADPH

  3. The ITER project construction status

    Science.gov (United States)

    Motojima, O.

    2015-10-01

    The pace of the ITER project in St Paul-lez-Durance, France is accelerating rapidly into its peak construction phase. With the completion of the B2 slab in August 2014, which will support about 400 000 metric tons of the tokamak complex structures and components, the construction is advancing on a daily basis. Magnet, vacuum vessel, cryostat, thermal shield, first wall and divertor structures are under construction or in prototype phase in the ITER member states of China, Europe, India, Japan, Korea, Russia, and the United States. Each of these member states has its own domestic agency (DA) to manage their procurements of components for ITER. Plant systems engineering is being transformed to fully integrate the tokamak and its auxiliary systems in preparation for the assembly and operations phase. CODAC, diagnostics, and the three main heating and current drive systems are also progressing, including the construction of the neutral beam test facility building in Padua, Italy. The conceptual design of the Chinese test blanket module system for ITER has been completed and those of the EU are well under way. Significant progress has been made addressing several outstanding physics issues including disruption load characterization, prediction, avoidance, and mitigation, first wall and divertor shaping, edge pedestal and SOL plasma stability, fuelling and plasma behaviour during confinement transients and W impurity transport. Further development of the ITER Research Plan has included a definition of the required plant configuration for 1st plasma and subsequent phases of ITER operation as well as the major plasma commissioning activities and the needs of the accompanying R&D program to ITER construction by the ITER parties.

  4. [1-(2,5-Dichloroanilino-5-methyl-1H-1,2,3-triazol-4-yl]methanol

    Directory of Open Access Journals (Sweden)

    Anna C. Cunha

    2016-01-01

    Full Text Available In the title compound, C10H10Cl2N4O, the hydroxy group and benzene ring are disposed to opposite sides of the central 1,2,3-triazolyl ring. The dihedral angle between the five- and six-membered rings is 87.51 (12°, and the C—O bond of the hydroxy group lies almost normal to the plane of the 5-membered ring [N—C—C—O = −93.2 (2°]. An intramolecular amino-N—H...Cl hydrogen bond is noted. In the extended structure, supramolecular layers in the ab plane are formed via hydroxy-O—H...N(ring and amine-N—H...O(hydroxy hydrogen bonds. The layers are connected along the c axis by π–π contacts between benzene rings [inter-centroid distance = 3.7789 (13 Å] and by C—Cl...π interactions.

  5. Interaction of model aryl- and alkyl-boronic acids and 1,2-diols in aqueous solution.

    Science.gov (United States)

    Marinaro, William A; Prankerd, Richard; Kinnari, Kaisa; Stella, Valentino J

    2015-04-01

    The goal of this work was to quantitate ester formation between alkyl and aryl boronic acids and vicinal-diols or 1,2-diols in aqueous solution. As used here, 1,2-diols includes polyols with one or more 1,2-diol pairs. Multiple techniques were used including apparent pKa shifts of the boronic acids using UV spectrophotometry (for aryl acids) and titration (for aryl and alkyl acids). Isothermal microcalorimetry was also used, with all reactions being enthalpically favored. For all the acids and 1,2-diols and the conditions studied, evidence only supported 1:1 ester formation. All the esters formed were found to be significantly more acidic, as Lewis acids, by 3-3.5 pKa units than the corresponding nonesterified boronic acid. The equilibrium constants for ester formation increased with increasing number of 1,2-diol pairs but stereochemistry may also play a role as sorbitol with five possible 1,2-diol pairs and five isomers (taking into account the stereochemistry of the alcohol groups) was twice as efficient at ester formation compared with mannitol, also with five possible 1,2-diol pairs but only three isomers. Alkyl boronic acids formed esters to a greater extent than aryl acids. Although some quantitative differences were seen between the various techniques used, rank ordering of the structure/reactivity was consistent. Formulation implications of ester formation between boronic acids and 1,2-diols are discussed. © 2015 Wiley Periodicals, Inc. and the American Pharmacists Association.

  6. Optical Isomers of 5-Methyl-1- (1-naphthyl) -1,2,3-triazole in the Crystal Structure

    Institute of Scientific and Technical Information of China (English)

    DONG Heng-Shan; ZHUANG Shan-Xue; LIU Shi-Qian; QUAN Bin; ZHANG Tong-Qiang

    2003-01-01

    @@ ( ± )-5-Methyl-1-( 1-naphthyl )-1,2, 3-triazole by which 5-methyl-1-( 1-naphthyl )-1,2, 3-triazol-4-carboxylic acid was prepared from aromatic amine was reported. The product was investigated with X-ray crystallography. Compound, C13H 11N3, Mr = 209.25, crystallized in the orthorhombic space group Pbca with unit cell parameters a = 1.0373(2) nm, b=1.1691(2) nm, c=1.7579(4) nm, α=90.00°, β=90.00°, γ=90.00°, V=2.1318(7)nm3, Z = 8, Dm = 1. 304 Mg/m3. The optical isomers of 5-methyl-1-(1-naphthyl)-1, 2,3-triazole was investigated in the crystal structure.

  7. Preliminary site description Forsmark area - version 1.2

    Energy Technology Data Exchange (ETDEWEB)

    Skagius, Kristina (ed.)

    2005-06-01

    The Swedish Nuclear Fuel and Waste Management Company (SKB) is undertaking site characterisation at two different locations, the Forsmark and Simpevarp areas, with the objective of siting a geological repository for spent nuclear fuel. An integrated component in the characterisation work is the development of a site descriptive model that constitutes a description of the site and its regional setting, covering the current state of the geosphere and the biosphere as well as those ongoing natural processes that affect their long-term evolution. The present report documents the site descriptive modelling activities (version 1.2) for the Forsmark area. The overall objectives of the version 1.2 site descriptive modelling are to produce and document an integrated description of the site and its regional environments based on the site-specific data available from the initial site investigations and to give recommendations on continued investigations. The modelling work is based on primary data, i.e. quality-assured, geoscientific and ecological field data available in the SKB databases SICADA and GIS, available July 31, 2004. The work has been conducted by a project group and associated discipline-specific working groups. The members of the project group represent the disciplines of geology, rock mechanics, thermal properties, hydrogeology, hydrogeochemistry, transport properties and surface ecosystems (including overburden, surface hydrogeochemistry and hydrology). In addition, some group members have specific qualifications of importance in this type of project e.g. expertise in RVS (Rock Visualisation System) modelling, GIS-modelling and in statistical data analysis. The overall strategy to achieve a site description is to develop discipline-specific models by interpretation and analyses of the primary data. The different discipline-specific models are then integrated into a site description. Methodologies for developing the discipline-specific models are documented in

  8. First synthesis of a '1,2-diquinone-calix[4]arene'. Interaction of its reduced form with Ag+

    OpenAIRE

    Vataj, Rame; Ridaoui, Hassan; Louati, Alain; Gabelica, Valérie; Steyer, Stéphane; MATT, DOMINIQUE

    2002-01-01

    Electrochemical oxidation of 5,11,17,23-tetra-tert-butyl-25,26-bis(diphenylphosphinoylmethoxy)-27,28-dihydroxycalix[4]arene (3), a calixarene with two phosphoryl units appended on proximal positions, affords the corresponding '1,2-diquinonecalix[4]arene' (4). The formation of 4 results from nucleophilic attack of residual water on anodically generated diphenoxylium. cations. Preliminary voltammetric experiments in CH3CN on a platinum electrode showed that 4 is suitable for electrochemical det...

  9. Enhancing Vowel Discrimination Using Constructed Spelling

    Science.gov (United States)

    Stewart, Katherine; Hayashi, Yusuke; Saunders, Kathryn

    2010-01-01

    In a computerized task, an adult with intellectual disabilities learned to construct consonant-vowel-consonant words in the presence of corresponding spoken words. During the initial assessment, the participant demonstrated high accuracy on one word group (containing the vowel-consonant units "it" and "un") but low accuracy on the other group…

  10. 1-(3-Phenylisoxazol-5-ylcyclohexane-1,2-diol

    Directory of Open Access Journals (Sweden)

    Luis Astudillo

    2009-07-01

    Full Text Available In the title compound, C15H17NO3, there are two molecules in the asymmetric unit wherein the isoxazole rings make dihedral angles of 16.16 (15 and 16.79 (13° with the benzene rings, and the cyclohexane rings adopt chair conformations. In both molecules, the hydroxyl groups of the diol fragments are cis oriented, the O—C—C—O torsion angles being 60.76 (12 and −55.86 (11°. The two molecules are linked by a strong O—H...N hydrogen bond and the crystal packing is stabilized by one O—H...N and two O—H...O hydrogen bonds. An intramolecular O—H...O hydrogen bond is observed in one of the molecules.

  11. N,N′-(Ethane-1,2-diylbis(2-chlorobenzamide

    Directory of Open Access Journals (Sweden)

    U. Mohamooda Sumaya

    2016-07-01

    Full Text Available The title compound, C16H14Cl2N2O2, crystallized with one half-molecule in the asymmetric unit; the whole molecule is generated by inversion symmetry, the center of inversion being situated at the middle of the bridging –CH2—CH2– bond. The dihedral angle between the amide group and the benzene ring is 52.4 (2°. In the crystal, molecules are linked by two pairs of N—H...O hydrogen bonds forming a ladder-like structure propagating along the a-axis direction and enclosing R22(14 ring motifs. The compound was refined as a two-component twin [BASF = 0.18 (1].

  12. Bis[μ-1-(2-pyridylmethyl-1H-benzotriazole]disilver(I bis(perchlorate

    Directory of Open Access Journals (Sweden)

    Chun-Sen Liu

    2009-11-01

    Full Text Available In the title centrosymmetric binuclear AgI complex, [Ag2(C12H10N42](ClO42, each AgI center is two-coordinated by one pyridine and one benzotriazole N-donor atom of two inversion-related 1-(2-pyridylmethyl-1H-benzotriazole (L ligands. This forms a unique box-like cyclic dimer with an intramolecular Ag...Ag separation of 4.479 (2 Å. Intermolecular C—H...O hydrogen-bonding interactions, involving uncoordinated ClO4− ions, link the binuclear units, forming a two-dimensional network parallel to (10overline{2}.

  13. 1-(2,6-Dichlorobenzoyl-3-(2,3,5,6-tetrachlorophenylthiourea trichloromethane hemisolvate

    Directory of Open Access Journals (Sweden)

    Saeed Anwar

    2009-02-01

    Full Text Available The title compound, C14H6Cl6N2OS·0.5CHCl3, crystallizes with four 1-(2,6-dichlorobenzoyl-3-(2,3,5,6-tetrachlorophenylthiourea molecules and two trichloromethane molecules in the asymmetric unit. The thiourea molecules exist in the solid state in their thione forms with typical thiourea C—S and C—O bonds lengths, as well as shortened C—N bonds. The —NH—C(=S—NH—C(=O— plane is almost perpendicular to the benzene ring in each thiourea molecule. Intramolecular N—H...O hydrogen bonds stabilize the molecular conformation and intermolecular N—H...S hydrogen bonds stabilize the packing arrangement.

  14. 5-Amino-1H-1,2,4-triazol-4-ium-3-carboxylate hemihydrate

    Directory of Open Access Journals (Sweden)

    José A. Fernandes

    2011-08-01

    Full Text Available The asymmetric unit of the title compound, C3H4N4O2·0.5H2O, comprises two whole molecules of 5-amino-1H-1,2,4-triazole-3-carboxylic acid in its zwitterionic form (proton transfer occurs from the carboxylic acid group to the N heteroatom at position 1, plus one water molecule of crystallization. The organic moieties are disposed into supramolecular layers linked by N—H...O and N—H...N hydrogen bonds parallel to the bc plane. Additional O—H...O and N—H...O hydrogen bonds involving the water molecules and the organic molecules lead to the formation of double-deck supramolecular arrangements which are interconnected along the a axis via π–π stacking [centroid–centroid distance = 3.507 (3 Å].

  15. Diethyl 4,4′-(ethane-1,2-diyldioxydibenzoate

    Directory of Open Access Journals (Sweden)

    Zhen Ma

    2011-07-01

    Full Text Available The title compound, C20H22O6, was obtained by the reaction of ethyl 4-hydroxybenzoate with 1,2-dichloroethane in dimethylformamide. The molecule lies around the crystallographic inversion center at (0,0,0, with the asymmetric unit consisting of one half of the molecule. The two ethyl groups are in trans positions. The ethyl, carboxyl, aryl and O—CH2 groups are coplanar with an r.m.s. deviation of 0.0208 (9 Å. The whole molecule is planar with an r.m.s. deviation of 0.0238 (9 Å for the 19 atoms used in the calculation and 0.0071 (9 Å for the two aryl groups in the molecule. A weak intermolecular C—H...O hydrogen bond and a C—H...π interaction help to consolidate the three-dimensional network.

  16. Word Criticality Analysis. MOS: 16B. Skill Levels 1 & 2

    Science.gov (United States)

    1981-09-01

    COMMAND FORT MONROE, VIRGINIA 23651 - A-9 1916 A., ’F 41 IIL SEQUJENTIAL CATA AGE 4 A’~~s~ ,~.. ~ AG 1C 2 TYPE MEORO By-. S5 ANC ~,(f A ZA’I’L Y elt *4...il #1 1l, 13. 1)1 1.;, IC , !. 1 !*2,t Ict ’. 9201 96,V1 - 95, 9C92 es.* 64. ,. 6z[*4 ’-.’ !9,1 !6,1. T.1 61o 669. 659. -.,1 %, 55, 56p: 45.1 4, 47.2...4 SliEL 57.1 let! 4 S t - Y-S fE P lot 4 SHV-r 2)01 4 ST i.Z. ).h. 4 ’ I.ACI 7t- 4 S)C’ 1s 1 98.gl 7.1 4 sIrf.. E !#I 141.1 UN3.1 4 sc i C,± ict

  17. Efimov physics with $1/2$ spin-isospin fermions

    CERN Document Server

    Kievsky, A

    2015-01-01

    The structure of few-fermion systems having $1/2$ spin-isospin symmetry is studied using potential models. The strength and range of the two-body potentials are fixed to describe low energy observables in the angular momentum $L=0$ state and spin $S=0,1$ channels of the two-body system. Successively the strength of the potentials are varied in order to explore energy regions in which the two-body scattering lengths are close to the unitary limit. This study is motivated by the fact that in the nuclear system the singlet and triplet scattering lengths are both large with respect to the range of the interaction. Accordingly we expect evidence of universal behavior in the three- and four-nucleon systems that can be observed from the study of correlations between observables. In particular we concentrate in the behavior of the first excited state of the three-nucleon system as the system moves away from the unitary limit. We also analyze the dependence on the range of the three-body force of some low-energy obser...

  18. Efimov Physics with {1/2} Spin-Isospin Fermions

    Science.gov (United States)

    Kievsky, A.; Gattobigio, M.

    2016-03-01

    The structure of few-fermion systems having {1/2} spin-isospin symmetry is studied using potential models. The strength and range of the two-body potentials are fixed to describe low energy observables in the angular momentum {L=0} state and spin {S=0,1} channels of the two-body system. Successively the strength of the potentials are varied in order to explore energy regions in which the two-body scattering lengths are close to the unitary limit. This study is motivated by the fact that in the nuclear system the singlet and triplet scattering lengths are both large with respect to the range of the interaction. Accordingly we expect evidence of universal behavior in the three- and four-nucleon systems that can be observed from the study of correlations between observables. In particular we concentrate in the behavior of the first excited state of the three-nucleon system as the system moves away from the unitary limit. We also analyze the dependence on the range of the three-body force of some low-energy observables in the three- and four-nucleon systems.

  19. The Beetle Reference Manual chip version 1.2

    CERN Document Server

    Baumeister, D; Schmelling, M

    2006-01-01

    This paper details the electrical specifications, operating conditions and port definitions of the readout chip Beetle 1.2. The chip is developed for the LHCb experiment and fulfils the requirements of the silicon vertex detector (VELO, VETO), the silicon tracker and the RICH detector in case of multi-anode photomultiplier readout. It integrates 128 channels with low-noise charge-sensitive preamplifiers and shapers. The pulse shape can be chosen such that it complies with LHCb specifications: a peaking time of 25 ns with a remainder of the peak voltage after 25 ns of less than 30%. A comparator per channel with configurable polarity provides a binary signal. Four adjacent comparator channels are being ORed and brought off chip via LVDS ports. Either the shaper or comparator output is sampled with the LHC-bunch-crossing frequency of 40 MHz into an analog pipeline. This ring buffer has a programmable latency of max. 160 sampling intervals and an integrated derandomising buffer of 16 stages. For analog readout d...

  20. Sparse SAR imaging based on L1/2 regularization

    Institute of Scientific and Technical Information of China (English)

    ZENG JinShan; FANG Jian; XU ZongBen

    2012-01-01

    In this paper,a novel method for synthetic aperture radar (SAR) imaging is proposed.The approach is based on L1/2 regularization to reconstruct the scattering field,which optimizes a quadratic error term of the SAR observation process subject to the interested scene sparsity. Compared to the conventional SAR imaging technique,the new method implements SAR imaging effectively at much lower sampling rate than the Nyquist rate,and produces high-quality images with reduced sidelobes and increased resolution. Also,over the prevalent greedy pursuit and L1 regularization based SAR imaging methods,there are remarkable performance improvements of the new method.On one hand,the new method significantly reduces the number of measurements needed for reconstruction,as supported by a phase transition diagram study.On the other hand,the new method is more robust to the observation noise.These fundamental properties of the new method are supported and demonstrated both by simulations and real SAR data experiments.

  1. RAG1/2 knockout pigs with severe combined immunodeficiency.

    Science.gov (United States)

    Huang, Jiao; Guo, Xiaogang; Fan, Nana; Song, Jun; Zhao, Bentian; Ouyang, Zhen; Liu, Zhaoming; Zhao, Yu; Yan, Quanmei; Yi, Xiaoling; Schambach, Axel; Frampton, Jon; Esteban, Miguel A; Yang, Dongshan; Yang, Huaqiang; Lai, Liangxue

    2014-08-01

    Pigs share many physiological, biochemical, and anatomical similarities with humans and have emerged as valuable large animal models for biomedical research. Considering the advantages in immune system resemblance, suitable size, and longevity for clinical practical and monitoring purpose, SCID pigs bearing dysfunctional RAG could serve as important experimental tools for regenerative medicine, allograft and xenograft transplantation, and reconstitution experiments related to the immune system. In this study, we report the generation and phenotypic characterization of RAG1 and RAG2 knockout pigs using transcription activator-like effector nucleases. Porcine fetal fibroblasts were genetically engineered using transcription activator-like effector nucleases and then used to provide donor nuclei for somatic cell nuclear transfer. We obtained 27 live cloned piglets; among these piglets, 9 were targeted with biallelic mutations in RAG1, 3 were targeted with biallelic mutations in RAG2, and 10 were targeted with a monoallelic mutation in RAG2. Piglets with biallelic mutations in either RAG1 or RAG2 exhibited hypoplasia of immune organs, failed to perform V(D)J rearrangement, and lost mature B and T cells. These immunodeficient RAG1/2 knockout pigs are promising tools for biomedical and translational research.

  2. Orientational relaxations in solid (1,1,2,2)tetrachloroethane

    Science.gov (United States)

    Tripathi, P.; Mitsari, E.; Romanini, M.; Serra, P.; Tamarit, J. Ll.; Zuriaga, M.; Macovez, R.

    2016-04-01

    We employ dielectric spectroscopy and molecular dynamic simulations to investigate the dipolar dynamics in the orientationally disordered solid phase of (1,1,2,2)tetrachloroethane. Three distinct orientational dynamics are observed as separate dielectric loss features, all characterized by a simply activated temperature dependence. The slower process, associated to a glassy transition at 156 ± 1 K, corresponds to a cooperative motion by which each molecule rotates by 180° around the molecular symmetry axis through an intermediate state in which the symmetry axis is oriented roughly orthogonally to the initial and final states. Of the other two dipolar relaxations, the intermediate one is the Johari-Goldstein precursor relaxation of the cooperative dynamics, while the fastest process corresponds to an orientational fluctuation of single molecules into a higher-energy orientation. The Kirkwood correlation factor of the cooperative relaxation is of the order of one tenth, indicating that the molecular dipoles maintain on average a strong antiparallel alignment during their collective motion. These findings show that the combination of dielectric spectroscopy and molecular simulations allows studying in great detail the orientational dynamics in molecular solids.

  3. 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

  4. 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.

  5. Bosonization of admissible representations of U$_{q}$($\\widehat{s}\\widehat{l}_{2}$) at level -1/2 and q-vertex operators

    CERN Document Server

    Koyama, Y

    1996-01-01

    We construct a representation of U_q(\\widehat{sl}_2) at level -1/2 by using the bosonic Fock spaces. The irreducible modules are obtained as the kernel of a certain operator, in contrast to the construction by Feingold and Frenkel for q=1 where such a procedure is not necessary. We also bosonize the q-vertex operators associated with the vector representation.

  6. Bis(μ-2-carboxymethyl-2-hydroxybutanedioatobis[diaquamanganese(II]–1,2-bis(pyridin-4-ylethene–water (1/1/2

    Directory of Open Access Journals (Sweden)

    In Hong Hwang

    2012-12-01

    Full Text Available The asymmetric unit of the title compound, [Mn2(C6H6O72(H2O4]·C12H10N2·2H2O, contains half of the centrosymmetric Mn complex dimer, half of a 1,2-bis(pyridin-4-ylethene molecule, which lies across an inversion center, and one water molecule. Two citrate ligands bridge two MnII ions, and each MnII atom is coordinated by four O atoms from the citrate ligands (one from hydroxy and three from carboxylate groups and two water O atoms, forming a distorted octahedral environment. In the crystal, O—H...O and O—H...N hydrogen bonds link the centrosymmetric dimers and lattice water molecules into a three-dimensional structure which is further stabilized by intermolecular π–π interactions [centroid–centroid distance = 3.959 (2 Å]. Weak C—H...O hydrogen bonding interactions are also observed.

  7. Lunar base construction requirements

    Science.gov (United States)

    Jolly, Steve; Helleckson, Brent

    1990-01-01

    The following viewgraph presentation is a review of the Lunar Base Constructibility Study carried out in the spring and summer of 1990. The objective of the study was to develop a method for evaluating the constructibility of Phase A proposals to build facilities on orbit or on extraterrestrial surfaces. Space construction was broadly defined as all forms of assembly, disassembly, connection, disconnection, deployment, stowage, excavation, emplacement, activation, test, transportation, etc., required to create facilities in orbit and on the surfaces of other celestial bodies. It was discovered that decisions made in the face of stated and unstated assumptions early in the design process (commonly called Phase A) can lock in non-optimal construction methods. Often, in order to construct the design, alterations must be made to the design during much later phases of the project. Such 'fixes' can be very difficult, expensive, or perhaps impossible. Assessing constructibility should thus be a part of the iterative design process, starting with the Phase A studies and continuing through production. This study assumes that there exists a minimum set of key construction requirements (i.e., questions whose answers form the set of discriminators) that must be implied or specified in order to assess the constructibility of the design. This set of construction requirements constitutes a 'constructibility filter' which then becomes part of the iterative design process. Five inherently different, dichotomous design reference missions were used in the extraction of these requirements to assure the depth and breath of the list.

  8. Intrinsically proton-conducting poly(1-vinyl-1,2,4-triazole)/triflic acid blends

    Energy Technology Data Exchange (ETDEWEB)

    Aslan, Ayse; Celik, Sevim U. [Department of Chemistry, Fatih University, 34500 Bueyuekcekmece-Istanbul (Turkey); Sen, Unal [Materials Science and Engineering, Gebze Institute of Technology, Gebze-Kocaeli (Turkey); Haser, Resul [Department of Chemistry, Fatih University, 34500 Bueyuekcekmece-Istanbul (Turkey); Bozkurt, Ayhan [Department of Chemistry, Fatih University, 34500 Bueyuekcekmece-Istanbul (Turkey)], E-mail: bozkurt@fatih.edu.tr

    2009-04-15

    In the present work, proton conductivity in a polymer blend comprising proton solvating heterocycles was examined. Poly(1-vinyl-1,2,4-triazole), PVTri was produced by free radical polymerization of 1-vinyl-1,2,4-triazole and then proton-conducting polymer electrolytes were obtained by blending of PVTri with trifluoromethanesulfonic acid, triflic acid (TA). To promote the intrinsic proton conductivity the percent blending ratio was changed from 25% to 150% with respect to polymer repeat unit. The protonation of aromatic heterocyclic rings was proved with Fourier-transform infrared spectroscopy (FT-IR). Thermogravimetry (TG) analysis showed that the samples are thermally stable up to approximately 300 deg. C. Differential scanning calorimetry (DSC) results illustrated that the samples are homogeneous and their glass transition temperatures are located within 130-160 deg. C. The surface morphology of the materials were characterized by scanning electron microscopy (SEM). The proton conductivity of the blends increased with triflic acid concentration and the temperature. In the anhydrous state, the proton conductivity of PVTriTA100 is 2.2 x 10{sup -4} S/cm at 150 deg. C and that of PVTriTA150 is approximately 0.012 S/cm at 80 deg. C which is similar to that of hydrated Nafion.

  9. Parallel Implementation of the CCSDS 1.2.3 Standard for Hyperspectral Lossless Compression

    Directory of Open Access Journals (Sweden)

    Daniel Báscones

    2017-09-01

    Full Text Available Hyperspectral imaging is a technology which, by sensing hundreds of wavelengths per pixel, enables fine studies of the captured objects. This produces great amounts of data that require equally big storage, and compression with algorithms such as the Consultative Committee for Space Data Systems (CCSDS 1.2.3 standard is a must. However, the speed of this lossless compression algorithm is not enough in some real-time scenarios if we use a single-core processor. This is where architectures such as Field Programmable Gate Arrays (FPGAs and Graphics Processing Units (GPUs can shine best. In this paper, we present both FPGA and OpenCL implementations of the CCSDS 1.2.3 algorithm. The proposed paralellization method has been implemented on the Virtex-7 XC7VX690T, Virtex-5 XQR5VFX130 and Virtex-4 XC2VFX60 FPGAs, and on the GT440 and GT610 GPUs, and tested using hyperspectral data from NASA’s Airborne Visible Infra-Red Imaging Spectrometer (AVIRIS. Both approaches fulfill our real-time requirements. This paper attempts to shed some light on the comparison between both approaches, including other works from existing literature, explaining the trade-offs of each one.

  10. Urinary prothrombin fragment 1+2 in patients with venous thrombosis and myocardial infarction

    NARCIS (Netherlands)

    Van Es, J.; Biere-Rafi, S.; Ahdi, M.; Kamphuisen, P.W.; Meijers, J.C.M.; Gerdes, V.E.A.

    2013-01-01

    Patients with venous-thromboembolism (VTE) and myocardial infarction (MI) have elevated prothrombin fragment 1+2 (F1+2) levels. In patients with postoperative VTE, urinary F1+2 (uF1+2) was higher than in individuals without VTE. To explore the relationship between plasma and uF1+2 we performed a pil

  11. Vapor intrusion risk of lead scavengers 1,2-dibromoethane (EDB) and 1,2-dichloroethane (DCA).

    Science.gov (United States)

    Ma, Jie; Li, Haiyan; Spiese, Richard; Wilson, John; Yan, Guangxu; Guo, Shaohui

    2016-06-01

    Vapor intrusion of synthetic fuel additives represented a critical yet still neglected problem at sites impacted by petroleum fuel releases. This study used an advanced numerical model to simulate the vapor intrusion risk of lead scavengers 1,2-dibromoethane (ethylene dibromide, EDB) and 1,2-dichloroethane (DCA) under different site conditions. We found that simulated EDB and DCA indoor air concentrations can exceed USEPA screening level (4.7 × 10(-3) μg/m(3) for EDB and 1.1 × 10(-1) μg/m(3) for DCA) if the source concentration is high enough (is still within the concentration range found at leaking UST site). To evaluate the chance that vapor intrusion of EDB might exceed the USEPA screening levels for indoor air, the simulation results were compared to the distribution of EDB at leaking UST sites in the US. If there is no degradation of EDB or only abiotic degradation of EDB, from 15% to 37% of leaking UST sites might exceed the USEPA screening level. This study supports the statements made by USEPA in the Petroleum Vapor Intrusion (PVI) Guidance that the screening criteria for petroleum hydrocarbon may not provide sufficient protectiveness for fuel releases containing EDB and DCA. Based on a thorough literature review, we also compiled previous published data on the EDB and DCA groundwater source concentrations and their degradation rates. These data are valuable in evaluating EDB and DCA vapor intrusion risk. In addition, a set of refined attenuation factors based on site-specific information (e.g., soil types, source depths, and degradation rates) were provided for establishing site-specific screening criteria for EDB and DCA. Overall, this study points out that lead scavengers EDB and DCA may cause vapor intrusion problems. As more field data of EDB and DCA become available, we recommend that USEPA consider including these data in the existing PVI database and possibly revising the PVI Guidance as necessary.

  12. Using R in Taverna: RShell v1.2

    Directory of Open Access Journals (Sweden)

    Breit Timo M

    2009-07-01

    Full Text Available Abstract Background R is the statistical language commonly used by many life scientists in (omics data analysis. At the same time, these complex analyses benefit from a workflow approach, such as used by the open source workflow management system Taverna. However, Taverna had limited support for R, because it supported just a few data types and only a single output. Also, there was no support for graphical output and persistent sessions. Altogether this made using R in Taverna impractical. Findings We have developed an R plugin for Taverna: RShell, which provides R functionality within workflows designed in Taverna. In order to fully support the R language, our RShell plugin directly uses the R interpreter. The RShell plugin consists of a Taverna processor for R scripts and an RShell Session Manager that communicates with the R server. We made the RShell processor highly configurable allowing the user to define multiple inputs and outputs. Also, various data types are supported, such as strings, numeric data and images. To limit data transport between multiple RShell processors, the RShell plugin also supports persistent sessions. Here, we will describe the architecture of RShell and the new features that are introduced in version 1.2, i.e.: i Support for R up to and including R version 2.9; ii Support for persistent sessions to limit data transfer; iii Support for vector graphics output through PDF; ivSyntax highlighting of the R code; v Improved usability through fewer port types. Our new RShell processor is backwards compatible with workflows that use older versions of the RShell processor. We demonstrate the value of the RShell processor by a use-case workflow that maps oligonucleotide probes designed with DNA sequence information from Vega onto the Ensembl genome assembly. Conclusion Our RShell plugin enables Taverna users to employ R scripts within their workflows in a highly configurable way.

  13. BEPCⅡ:construction and commissioning

    Institute of Scientific and Technical Information of China (English)

    ZHANG Chuang

    2009-01-01

    This is a status report of the project on befalf of the BEPC Ⅱ team.BEPC Ⅱ is a major upgrade radiation(SR)source with its outer ring,or SR ring.As a collider,BEPC Ⅱ operates in the beam energy region of 1-2.3 GeV with design luminosity of 1×1033 cm-2s-1 at 1.89 GeV.As a light source.the SR ring operates at 2.5 GeV and 250 mA.Construction of the project started in the beginning of 2004.Installation of the storage ring components was completed in October 2007.Commissioning is in progress.There are still many issues for further studies before reach to 3×1032 cm-2s-1.

  14. 28 CFR 94.11 - Purpose; construction and severability.

    Science.gov (United States)

    2010-07-01

    ... acts of international terrorism that occur outside the United States, for expenses associated with that... International Terrorism Victim Expense Reimbursement Program Introduction § 94.11 Purpose; construction and...

  15. [1,2-Bis(diisopropylphosphanylethane-κ2P,P′]dichloridonickel(II–9H-carbazole (1/2

    Directory of Open Access Journals (Sweden)

    Farah Cañavera-Buelvas

    2011-04-01

    Full Text Available In the title compound, [NiCl2(C14H32P2]·2C12H9N, the neutral [Ni(dppeCl2] complex [dppe is 1,2-bis(diisopropylphosphanylethane] consists of a tetracoordinated Ni2+ cation and has a crystallographic twofold axis passing through the metal atom and the mid-point of the CH2—CH2 bond of the dppe ligand. The metal atom shows slight tetrahedral distortion from an ideal square-planar coordination geometry, as reflected in the dihedral angle between NiCl2 and NiP2 planes of 15.32 (2°. The 9H-carbazole ring system is essentially planar (r.m.s. deviation = 0.022 Å. In the crystal packing, there are two symmetry-related 9H-carbazole molecules between two adjacent NiII complexes, with an angle between the carbazole mean planes of ca 77°.

  16. Xinjiang Dushanzi Project Started Construction Started Construction

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ Xinjiang Dushanzi petroleum refining and chemical integrated project,is the largest one so far in China, with a capacity of ten-million-ton petroleum refinery and onemillion-ton ethylene complex, directly under PetroChina Company Limited (PetroChina), was started construction along with laying a foundation on August 22, 2005.

  17. Constructing Student Problems in Phylogenetic Tree Construction.

    Science.gov (United States)

    Brewer, Steven D.

    Evolution is often equated with natural selection and is taught from a primarily functional perspective while comparative and historical approaches, which are critical for developing an appreciation of the power of evolutionary theory, are often neglected. This report describes a study of expert problem-solving in phylogenetic tree construction.…

  18. GSM(m,1)(m=1,2)模型的数值解%Numeriacl Solution of GSM (m, 1)(m= 1,2)Model

    Institute of Scientific and Technical Information of China (English)

    吴强; 刘炳琪

    2001-01-01

    The prediction accuracy can be improved by using the spline function to correct the residue of GM (m,1)(m=1,2). Numerical Solution of GSM (m,1)(m=1,2)Modle is given.%本文用样条函数对GM(m,1)(m=1,2)模型的残差序列进行插值拟合,得到GSM(m,1)(m=1,2)模型的数值解.

  19. Constructive neural network learning

    OpenAIRE

    Lin, Shaobo; Zeng, Jinshan; Zhang, Xiaoqin

    2016-01-01

    In this paper, we aim at developing scalable neural network-type learning systems. Motivated by the idea of "constructive neural networks" in approximation theory, we focus on "constructing" rather than "training" feed-forward neural networks (FNNs) for learning, and propose a novel FNNs learning system called the constructive feed-forward neural network (CFN). Theoretically, we prove that the proposed method not only overcomes the classical saturation problem for FNN approximation, but also ...

  20. Kirchnerist construction of memory

    OpenAIRE

    Bermúdez, Nicolás

    2015-01-01

    The effects on the construction of collective memory caused by the arrival of the kirchnerism to the political field have been extensively studied. That construction suffered transformations with the change of president, which have been less studied. Therefore, the objective of this paper is to present an analysis about the discursive construction of memory during Cristina Fernández de Kirchner first government. This research is part of the discourse studies, and more precisely it is part of ...