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Sample records for nx m0 resultat

  1. Results of the Accord 12/0405- prodige 2 randomized test in the rectum cancers of stage T(2) 3-4 NX M0; Resultat de l'essai randomise Accord 12/0405-prodige 2 dans les cancers du rectum de stade T(2) 3-4 NX M0

    Energy Technology Data Exchange (ETDEWEB)

    Gerard, J.P.; Benezery, K. [Centre Antoine-Lacassagne, 06 - Nice (France); Azria, D.; Gourgou-Bourgade, S. [CRLCC Val d' Aurelle-Paul-Lamarque, 34 - Montpellier (France); Martel-Laffay, I. [Centre Leon-Berard, 69 - Lyon (France); Hennequin, C. [Hopital St-Louis, 75 - Paris (France); Etienne, P.L. [Clinique Armoricaine de Radiologie, 22 - Saint-Brieuc (France); Vendrely, V. [CHU, 33 - Bordeaux (France); Peiffert, D. [Centre Alexis-Vautrin, 54 - Nancy (France); Montoto-Grillot, C. [FNCLCC-BECT, 75 - Paris (France)

    2009-10-15

    The Capox 50 protocol increase the early toxicity without reducing the possibilities of surgery. It does not increase neither the sphincter conservation rate nor the surgery complications. It improves noticeably the histological tumor response (ypT) and the negative circumferential margin rate. The Star Italian protocol randomized for similar patients exclusively oxaliplatin, without increasing the histological tumor response rate and with 25% of grade 3 or 4 early toxicity. In comparison between the tests Accord 12 and Star it is possible to propose as neoadjuvant treatment of these rectum cancers (stage T3-4 Mo) a Cape 50 protocol associating a 50 Gy radiotherapy in 25 fractions and five weeks and a concomitant chemotherapy (capecitabine: 1600 mg/M{sup 2}/d). The oxaliplatin can be proposed out of radiotherapy to eradicate the infra clinical metastases. (N.C.)

  2. Giv plads til negative resultater

    DEFF Research Database (Denmark)

    Drachen, Thea Marie; Dorch, Bertil F.

    2015-01-01

    Den videnskabelige litteratur afspejler ikke nødvendigvis den forskning, der faktisk udføres. For “negative” resultater bliver i stort omfang frasorteret, hvilket koster tid, penge og i værste fald menneskeliv.......Den videnskabelige litteratur afspejler ikke nødvendigvis den forskning, der faktisk udføres. For “negative” resultater bliver i stort omfang frasorteret, hvilket koster tid, penge og i værste fald menneskeliv....

  3. Intelligent Farttilpasning i firmabiler - endelige resultater

    DEFF Research Database (Denmark)

    Agerholm, Niels; Tradisauskas, Nerius; Lahrmann, Harry

      I dette paper fremlægges de endelige resultater for Intelligent Farttilpasning projektet 'Spar på Farten - Tab ikke kunder i svinget'. Projektet involverede i alt 26 erhvervskøretøjer med i alt 51 chauffører. Hver bil kørte med udstyret i cirka 14 måneder, hvoraf de første to var med udstyret....... Hovedresultaterne er, at informerende og advarende Intelligent Farttilpasning alene havde en mindre effekt på deltagernes adfærd, og at denne endvidere aftog over tid. Når incitament i form af en nøgle-ID og medfølgende registrering også blev medtaget, var effekten markant større og mere konstant over tid. Andelen...

  4. NX 2D DRAWING FIX TOOL

    OpenAIRE

    Ser, Burcu

    2016-01-01

    NX Software is an integrated product design, engineering and manufacturing solution provided by Siemens. It offers a full range of advanced manufacturing applications, integration of multi-discipline simulation and it is considered as the best tightly integrated software with Teamcenter, Product Lifecycle Management plat-form. NX is the follower of I-deas software which is also used for similar purposes. The target of this project was to investigate the problems, which occur while mi-grat...

  5. RA – beskeden genetisk disposition - resultater fra nyt dansk tvillingstudie

    DEFF Research Database (Denmark)

    Svendsen, Anders Jørgen

    2010-01-01

    Vi har nu indsamlet data fra en velkarakteriseret kohorte af danske tvillinger med RA, og med den tilhørende biobank-data åbner det mulighed for videre forskning i både genetiske, epigenetiske og miljømæssige forholds betydning for udvikling af RA. De første resultater fra denne udvidede danske u...

  6. Cortex-M0处理器初探%Cortex-M0 Processor:An Initial Survey

    Institute of Scientific and Technical Information of China (English)

    范云龙; 方安平; 李宁

    2010-01-01

    介绍Cortex-M0处理器的特点;详细分析Cortex-M0处理器的编程模型、存储模型、异常处理和功耗管理,并将Cortex-M0与Cortex-M3和基于8/16位架构的处理器作了对比分析;最后简要介绍Cortex-M0处理器的相关开发工具.

  7. 浅谈ARM Cortex-M0

    Institute of Scientific and Technical Information of China (English)

    卢泰均

    2010-01-01

    @@ 引言 ARM公司在2009年初发布了其嵌入式处理器系列中最小型、最低功耗的Cortex-M0处理器.Cortex-M0低功耗、高性能与极精简程序代码的特性,能应用于各种微控制器(MCU)中,并可让研发业者以8位的价位创造32位的效能,并进一步将传统的8位和16位的处理器推进至更高效能、更低功耗的32位处理器.

  8. Rigid curves on $\\bar M_{0,n}$ and arithmetic breaks

    CERN Document Server

    Castravet, Ana-Maria

    2011-01-01

    A result of Keel and McKernan states that a hypothetical counterexample to the F-conjecture must come from rigid curves on $\\bar {M}_{0,n}$ that intersect the interior. We exhibit several ways of constructing rigid curves. In all our examples, a reduction mod p argument shows that the classes of the rigid curves that we construct can be decomposed as sums of F-curves.

  9. Successful Pregnancy Using the NxStage Home Hemodialysis System

    Directory of Open Access Journals (Sweden)

    Yasmin Brahmbhatt

    2016-01-01

    Full Text Available Pregnancy in the setting of the uremic milieu of renal disease has a lower success rate than in the normal population and is a rare event. While intensified renal replacement therapy (RRT during pregnancy can lead to improved outcomes, most studies have focused on nocturnal hemodialysis as the main RRT in pregnancy. Although thousands of patients use the home NxStage System One short daily hemodialysis (SDHD machine in the United States, pregnancy outcomes with this therapy are unknown. The NxStage System One uses low-volume dialysate and hence small and middle molecule clearance may differ compared to conventional therapies and affect pregnancy outcomes. We report a case of a successful conception and pregnancy using the home NxStage system. The NxStage system may provide an alternative to the more routinely used NHD or standard SDHD therapies for women of childbearing age.

  10. Effect of PECVD SiNx/SiOyNx-Si interface property on surface passivation of silicon wafer

    Science.gov (United States)

    Jia, Xiao-Jie; Zhou, Chun-Lan; Zhu, Jun-Jie; Zhou, Su; Wang, Wen-Jing

    2016-12-01

    It is studied in this paper that the electrical characteristics of the interface between SiOyNx/SiNx stack and silicon wafer affect silicon surface passivation. The effects of precursor flow ratio and deposition temperature of the SiOyNx layer on interface parameters, such as interface state density Dit and fixed charge Qf, and the surface passivation quality of silicon are observed. Capacitance-voltage measurements reveal that inserting a thin SiOyNx layer between the SiNx and the silicon wafer can suppress Qf in the film and Dit at the interface. The positive Qf and Dit and a high surface recombination velocity in stacks are observed to increase with the introduced oxygen and minimal hydrogen in the SiOyNx film increasing. Prepared by deposition at a low temperature and a low ratio of N2O/SiH4 flow rate, the SiOyNx/SiNx stacks result in a low effective surface recombination velocity (Seff) of 6 cm/s on a p-type 1 Ω·cm-5 Ω·cm FZ silicon wafer. The positive relationship between Seff and Dit suggests that the saturation of the interface defect is the main passivation mechanism although the field-effect passivation provided by the fixed charges also make a contribution to it. Project supported by the National High Technology Research and Development Program of China (Grant No. 2015AA050302) and the National Natural Science Foundation of China (Grant No. 61306076).

  11. NX-2G : autonomous BBOBS-NX for a highly mobile broadband seismic observation at the seafloor

    Science.gov (United States)

    Shiobara, Hajime; Sugioka, Hiroko; Ito, Aki; Shinohara, Masanao

    2016-04-01

    We had developed the broadband ocean bottom seismometer (BBOBS) and its new generation system (BBOBS-NX), and, with them, several practical observations have been performed to create and establish a new category of the ocean floor broadband seismology, since 1999. Now, our BBOBS and BBOBS-NX data is proved to be at acceptable level for broadband seismic analyses. Especially, the BBOBS-NX is able to obtain the low noise horizontal data comparable to the land station in periods longer than 10 s, which is adequate for modern analyses of the mantle structure. Moreover, the BBOBS(T)-NX is under practical evaluation for the mobile tilt observation at the seafloor, which will enable dense geodetic monitoring. The BBOBS-NX system must be a powerful tool, although, the current system has intrinsic limitation in opportunity of observations due to the necessary use of the submersible vehicle for the deployment and recovery. If we can use this system with almost any kind of vessels, like as the BBOBS (self pop-up system), it should lead us a true breakthrough of seafloor observations in geodynamics. Hereafter, we call the new autonomous BBOBS-NX as NX-2G in short. There are two main problems to be cleared to realize the NX-2G system. The first one is a tilt of the sensor unit on landing, which is larger than the acceptable limit of the sensor (±8°) in 47 % after our 15 free-fall deployments of the BBOBS-NX. As we had no evidence at which moment the tilt occurred, so it was observed during the BBOBS-NX deployment in the last year by attaching a video camera and an acceleration logger those were originally developed for this purpose. The only one result shows that the tilt on landing seemed determined by the final posture of the BBOBS-NX system just before the penetration into the sediment. The second problem is a required force to extract the sensor unit from the sticky clay sediment, which was about 80 kgf in maximum with the current BBOBS-NX system from in-situ measurements

  12. The preparation of thermally stable TiNx/Ag(Mo)/TiNx ultrathin films by magnetron sputtering

    Energy Technology Data Exchange (ETDEWEB)

    Loka, Chadrasekhar; Yu, Ho Tak; Lee, Kee-Sun, E-mail: kslee@kongju.ac.kr

    2014-11-03

    Thermally stable optically selective coatings are indispensable for low emissivity (low-e) applications. Low-e coatings effectively reduce energy loss from the building glazing systems by allowing high visible transmittance and reflecting most near-infrared radiation of the solar spectrum. In the present study, we investigated the thermal stability and optical properties of TiNx/Ag(Mo)/TiNx films deposited on glass substrates by using rf and dc magnetron sputtering at room temperature. The deposited multilayer stacks were annealed up to 873 K for 1 h in air ambient and a rigorous analysis was presented on the structure, microstructure, topography, chemical composition, and optical properties by grazing incidence X-ray diffraction, high resolution transmission electron microscopy, scanning electron microscopy, atomic force microscopy, Auger electron spectroscopy, and Ultraviolet–visible–near infrared spectrophotometer, respectively. The results revealed that the proposed structure was thermally stable with dense and smooth microstructure until 773 K; in addition, noteworthy inward/outward diffusion of silver was not observed due to the good diffusion barrier performance of TiNx. An abrupt rise in root mean square roughness and locally isolated islands like structures was observed at 873 K annealing temperature. The deposited films showed high transmittance in the visible region and high reflectance in the infrared region of the solar radiation spectrum. - Highlights: • TiNx/Ag(Mo)/TiNx/films were thermally durable until 773 K. • High visible transmittance was obtained by adopting the amorphous TiNx films. • Ag(Mo) film was protected until 773 K by partial oxidation of TiNx layers.

  13. Stability of SiNX/SiNX double stack antireflection coating for single crystalline silicon solar cells

    Science.gov (United States)

    Lee, Youngseok; Gong, Daeyeong; Balaji, Nagarajan; Lee, Youn-Jung; Yi, Junsin

    2012-01-01

    Double stack antireflection coatings have significant advantages over single-layer antireflection coatings due to their broad-range coverage of the solar spectrum. A solar cell with 60-nm/20-nm SiNX:H double stack coatings has 17.8% efficiency, while that with a 80-nm SiNX:H single coating has 17.2% efficiency. The improvement of the efficiency is due to the effect of better passivation and better antireflection of the double stack antireflection coating. It is important that SiNX:H films have strong resistance against stress factors since they are used as antireflective coating for solar cells. However, the tolerance of SiNX:H films to external stresses has never been studied. In this paper, the stability of SiNX:H films prepared by a plasma-enhanced chemical vapor deposition system is studied. The stability tests are conducted using various forms of stress, such as prolonged thermal cycle, humidity, and UV exposure. The heat and damp test was conducted for 100 h, maintaining humidity at 85% and applying thermal cycles of rapidly changing temperatures from -20°C to 85°C over 5 h. UV exposure was conducted for 50 h using a 180-W UV lamp. This confirmed that the double stack antireflection coating is stable against external stress.

  14. Research of Modular Assembly Methods in NX 8.0

    OpenAIRE

    Juustovaara, Alexander

    2015-01-01

    ABB Motors and Generators business unit received a new 3D design program; Siemens NX, in 2008 and took it as main design software in 2010. Since then the assemblies made in the NX were not following any rules thus editing of these assemblies was time-consuming and challenging depending on the designer. The thesis about a similar topic was made by Sami Risku for ABB, in 2010, but results were not used. The main objective of this thesis was to research further different assembly design approach...

  15. Structural Analysis Using NX Nastran 9.0

    Science.gov (United States)

    Rolewicz, Benjamin M.

    2014-01-01

    NX Nastran is a powerful Finite Element Analysis (FEA) software package used to solve linear and non-linear models for structural and thermal systems. The software, which consists of both a solver and user interface, breaks down analysis into four files, each of which are important to the end results of the analysis. The software offers capabilities for a variety of types of analysis, and also contains a respectable modeling program. Over the course of ten weeks, I was trained to effectively implement NX Nastran into structural analysis and refinement for parts of two missions at NASA's Kennedy Space Center, the Restore mission and the Orion mission.

  16. Resonant Tunnelling and Storage of Electrons in Si Nanocrystals within a-SiNx/nc-Si/a-SiNx Structures

    Institute of Scientific and Technical Information of China (English)

    WANG Xiang; HUANG Jian; ZHANG Xian-Gao; DING Hong-Lin; YU Lin-Wei; HUANG Xin-Fan; LI Wei; XU Jun; CHEN Kun-Ji

    2008-01-01

    @@ The a-SiNx/nanocrystalline silicon (nc-Si)/a-SiNx sandwiched structures with asymmetric double-barrier are fabricated in a plasma enhanced chemical vapour deposition (PECVD) system on p-type Si substrates. The nc-Si layer in thickness 5nm is fabricated from a hydrogen-diluted silane gas by the layer-by-layer deposition technique. The thicknesses of tunnel and control SiNx layers are 3nm and 20nm,respectively. Frequency-dependent capacitance spectroscopy is used to study the electron tunnelling and the storage in the sandwiched structures.Distinct frequency-dependent capacitance peaks due to electrons tunnelling into the nc-Si dots and capacitance-voltage (C- V) hysteresis characteristic due to electrons storage in the nc-Si dots are observed with the same sample.

  17. Hall Mobilities in GaNxAs1-x

    Science.gov (United States)

    2010-01-01

    Walukiewicz2, and Germán Gonzalez-Díaz1 1 Dpto. de Física Aplicada III, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Madrid 28040...Ref. [15] temperature behavior of GaNxAs1-x mobility is modeled, but this model does not account for the different temperature dependences presented

  18. NX 6 With Synchronous Technology%应用同步建模技术的NX6

    Institute of Scientific and Technical Information of China (English)

    Siemens PLM Software

    2008-01-01

    @@ NX 6的创新之处 1 创新性用户界面把高端功能与易用性和易学性结合在一起 NX 6建立在NX 5中引入的基于角色的用户界面基础上,把此方法的覆盖范围扩展至整个应用程序,以确保在核心产品领域中的一致性. 为了提供一个能够随着用户技能水平增长而成长并且保持用户效率的系统,NX 6具有可定制的可移动弹出工具栏,可以减少鼠标移动,使用户能够把他们的常用功能集成到由简单手势所控制的动作之中.

  19. The Diophantine Equation nx2 + 2m = yn%Diophantine方程nx2+2m=yn

    Institute of Scientific and Technical Information of China (English)

    吴华明

    2011-01-01

    设n是大于3的奇数.本文运用Y.Bilu,G.Hanrot和P.M.Voutier关于Lehmer 数本原素因子存在性的新近结果,证明了方程nx2+2m=yn没有适合gcd(x,y)=1且m为奇数的正整数解(x,y,m).%Let n be an odd integer with n > 3. In this paper, using a recent result on the existence of primitive divisors of Lehmer numbers given by Y. Bilu, G. Hanrot and P.M.Voutier, we prove that the equation nx2 + 2m = yn has no positive integer solution (x, y, m)satisfying gcd(x, y) = 1 and m is odd.

  20. Relevant Applications of Tools in UG NX CAM Module

    Directory of Open Access Journals (Sweden)

    Zhang En Guang

    2016-01-01

    Full Text Available In this paper, the methods to establish the custom magazine have been proposed while the UG NX CAM module is employed to conduct the CNC milling programming. At the same time, how to set the parameters of the cutting tool has been also analyzed; in the creation of tools, the use of shank and holder as well as the use of handle check functions in NC machining has been introduced; meanwhile, the secondary rough machining of corner and the application of clean-cut features have been discussed.

  1. The stabilisation of the Nx phase in mixtures.

    Science.gov (United States)

    Ramou, E; Ahmed, Z; Welch, C; Karahaliou, P K; Mehl, G H

    2016-01-21

    The phase behaviour of mixtures between two symmetric dimers, CBC9CB and the ether-linked analogue CBOC9OCB was investigated by Polarizing Optical Microscopy (POM), Differential Scanning Calorimetry (DSC) and X-Ray Diffraction (XRD) studies. The dimeric constituents are fully miscible and the construction of a temperature-composition phase diagram reveals a surprising amplification of the stability of the Nx phase in compositions of up to 37 wt% of CBOC9OCB in CBC9CB. The origin for this enhancement of stability is discussed and an explanation based on chiral recognition is developed.

  2. Diffusion barrier performance of nanoscale TaNx thin-film

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    TaNx nanoscale thin-films and Cu/TaNx multilayer structures were deposited on P-type Si(100) substrates by DC reactive magnetron sputtering. The characteristics of TaNx films and thermal stabilities of Cu/TaNx/Si systems annealed at various temperatures were studied by four-point probe(FPP) sheet resistance measurement, atomic force microscopy(AFM), scanning electron microscope-energy dispersive spectrum (SEM-EDS), Alpha-Step IQ Profilers and X-ray diffraction(XRD), respectively. The results show that the surfaces of deposited TaNx thin-films are smooth. With the increasing of N2 partial pressure, the deposition rate and root-mean-square(RMS) decrease, while the content of N and sheet resistance of the TaNx thin-films increase, and the diffusion barrier properties of TaNx thin-films is improved. TaN1.09 can prevent interdiffusion between Cu and Si effectively after annealing up to 650 ℃ for 60 s. The failure of TaNx is mainly attributed to the formation of Cu3Si on TaN/Si interface, which results from Cu diffusion along the grain boundaries of polycrystalline TaN.

  3. Antitumor efficacy, pharmacokinetics, and biodistribution of NX 211: a low-clearance liposomal formulation of lurtotecan.

    Science.gov (United States)

    Emerson, D L; Bendele, R; Brown, E; Chiang, S; Desjardins, J P; Dihel, L C; Gill, S C; Hamilton, M; LeRay, J D; Moon-McDermott, L; Moynihan, K; Richardson, F C; Tomkinson, B; Luzzio, M J; Baccanari, D

    2000-07-01

    Lurtotecan is a clinically active water-soluble camptothecin analogue that has been formulated into a low-clearance unilamellar liposome, NX 211. Comparative studies between free drug and NX 211 have been performed assessing pharmacokinetics in nude mice, tissue distribution in tumor-bearing mice, and antitumor efficacy in xenografts. Compared with lurtotecan, NX 211 demonstrated a significant increase in plasma residence time and a subsequent 1500-fold increase in the plasma area under the drug concentration curve. The volume of distribution was also greatly restricted, suggesting altered tissue distribution. Evaluation of tissues 24 h after administration of either [14C]NX 211 or [14C]lurtotecan to ES-2 tumor-bearing mice demonstrated a 40-fold increase in radiolabeled compound in the tumors of NX 211-treated mice compared with mice treated with lurtotecan. In single-dose efficacy studies, NX 211 produced a consistent 3-fold or greater increase in therapeutic index compared with lurtotecan in both the KB and ES-2 xenograft models. When compared at equitoxic levels in repeat-dose efficacy studies, NX 211 generated durable cures lasting >60 days and a 2-8-fold increase in log10 cell kill, compared with lurtotecan and topotecan, respectively. Together, these data demonstrate that NX 211 has significant therapeutic advantage over lurtotecan and that the improved antitumor activity is consistent with increased exposure and enhanced drug delivery to tumor sites.

  4. Outcome of surgical resection for pathologic N0 and Nx non-small cell lung cancer.

    Science.gov (United States)

    Osarogiagbon, Raymond U; Allen, Jeffrey W; Farooq, Aamer; Berry, Allen; Spencer, David; O'Brien, Thomas

    2010-02-01

    Metastasis to lymph nodes (LNs) connotes poor prognosis in non-small cell lung cancer (NSCLC). Sufficient LNs must be examined to accurately determine LN negativity. Patients with no LNs examined (pNx) have an indeterminate stage, may have undetected disease and erroneous assignment to a low-risk group. To evaluate this possibility, we compared the survival of patients with node-negative disease and at least one LN examined (pN0) to those with pNx. Retrospective analysis of all resections for NSCLC from January 1, 2004 to December 31, 2007 at hospitals in the Memphis Metropolitan Area. Of 746 resections, 90 (12.1%) were Nx; 506 (67.8%) N0. Demographic and histologic characteristics were similar. A total of 54.4% Nx patients had sublobar resection, compared with 5.5% N0 (p Nx do significantly worse than those with pT2N0.

  5. Des-γ-carboxyprothrombin (DCP and NX-DCP expressions and their relationship with clinicopathological features in hepatocellular carcinoma.

    Directory of Open Access Journals (Sweden)

    Akiko Sumi

    Full Text Available Des-γ-carboxyprothrombin (DCP has been used as a tumor marker for hepatocellular carcinoma (HCC. Recently the DCP/NX-DCP ratio, calculated by dividing DCP by NX-DCP, has been reported useful in detecting HCC. The purpose of this study is to clarify the significance of DCP and NX-DCP expression in HCC tissues.HCC and non-HCC tissue samples were obtained from 157 patients and were immunohistochemically examined for DCP and NX-DCP expression using anti-DCP antibody and anti-NX-DCP antibody. DCP and NX-DCP expression scores were calculated by multiplying staining intensity grade by percentage of stained area. Serum DCP and NX-DCP levels were determined in 89 patients. We evaluated the relationship between tumor expression, serum level, and pathomorphological findings.Intrahepatic metastasis (im was significantly more frequent in cases with high DCP expression than in cases with low DCP expression. High NX-DCP expression was associated with significantly lower histological grade, and less frequent im or portal vein invasion (vp than low NX-DCP expression. Serum DCP was correlated with DCP expression, but serum NX-DCP was not correlated with NX-DCP expression. DCP-positive (≥40 mAU/L, NX-DCP-positive (≥90 mAU/L, and DCP/NX-DCP ratio-positive (≥1.5 cases were associated with significantly larger tumor size and more frequent vp than negative cases. DCP was rarely expressed, but NX-DCP was frequently expressed in non-cancerous liver tissues. Patients with NX-DCP expression-negative tumors showed a lower survival rate than those with NX-DCP expression-positive tumors (p = 0.04, whereas the survival in serum NX-DCP-positive cases was lower than that of serum negative cases (p = 0.02.DCP and NX-DCP were produced in HCC tissues, but differed in expression level and biological properties. DCP expression, serum DCP or NX-DCP level, and DCP/NX-DCP ratio were closely related to malignant properties of HCC.

  6. Des-γ-carboxyprothrombin (DCP) and NX-DCP expressions and their relationship with clinicopathological features in hepatocellular carcinoma.

    Science.gov (United States)

    Sumi, Akiko; Akiba, Jun; Ogasawara, Sachiko; Nakayama, Masamichi; Nomura, Yoriko; Yasumoto, Makiko; Sanada, Sakiko; Nakashima, Osamu; Abe, Toshi; Yano, Hirohisa

    2015-01-01

    Des-γ-carboxyprothrombin (DCP) has been used as a tumor marker for hepatocellular carcinoma (HCC). Recently the DCP/NX-DCP ratio, calculated by dividing DCP by NX-DCP, has been reported useful in detecting HCC. The purpose of this study is to clarify the significance of DCP and NX-DCP expression in HCC tissues. HCC and non-HCC tissue samples were obtained from 157 patients and were immunohistochemically examined for DCP and NX-DCP expression using anti-DCP antibody and anti-NX-DCP antibody. DCP and NX-DCP expression scores were calculated by multiplying staining intensity grade by percentage of stained area. Serum DCP and NX-DCP levels were determined in 89 patients. We evaluated the relationship between tumor expression, serum level, and pathomorphological findings. Intrahepatic metastasis (im) was significantly more frequent in cases with high DCP expression than in cases with low DCP expression. High NX-DCP expression was associated with significantly lower histological grade, and less frequent im or portal vein invasion (vp) than low NX-DCP expression. Serum DCP was correlated with DCP expression, but serum NX-DCP was not correlated with NX-DCP expression. DCP-positive (≥40 mAU/L), NX-DCP-positive (≥90 mAU/L), and DCP/NX-DCP ratio-positive (≥1.5) cases were associated with significantly larger tumor size and more frequent vp than negative cases. DCP was rarely expressed, but NX-DCP was frequently expressed in non-cancerous liver tissues. Patients with NX-DCP expression-negative tumors showed a lower survival rate than those with NX-DCP expression-positive tumors (p = 0.04), whereas the survival in serum NX-DCP-positive cases was lower than that of serum negative cases (p = 0.02). DCP and NX-DCP were produced in HCC tissues, but differed in expression level and biological properties. DCP expression, serum DCP or NX-DCP level, and DCP/NX-DCP ratio were closely related to malignant properties of HCC.

  7. 4Nx Non-Isolated and Non-Inverting Hybrid Interleaved Multilevel Boost Converter Based on VLCIm Cell and Cockroft Walton Voltage Multiplier for Renewable Energy Applications

    DEFF Research Database (Denmark)

    Bhaskar, Mahajan Sagar; Padmanaban, Sanjeevikumar; Blaabjerg, Frede

    2016-01-01

    In this treatise, 4Nx hybrid Non Inverting & Non Isolated (NI-NI) DC-DC interleaved multi-level boost converter (4Nx IMBC) for renewable energy applications is proposed. The proposed 4Nx IMBC is derived by coalescing the feature of 2Nx DC-DC Interleaved Multi-level Boost Converter (2Nx IMBC......), voltage-lift-switched-inductor-modified (VLSlm Cell) and Cockcroft Walton (CW) voltage multipliers. The 4Nx converter provides 4N times more conversion voltage ratio compared to conventional boost converter where N denotes the number of output stages of the 4Nx IMBC. To make renewable energy sources...

  8. Siemens PLM Software发布NX6软件

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    2008年5月21日,西门子工业自动化业务部旗下机构、全球领先的产品生命周期管理(PLM)软件和服务提供商Siemens PLM Software与在波士顿举行的年度行业分析师大会同时发布了NX?第6版数字化产品开发软件,其中包括由Siemens PLM Software最近发布的同步建模技术所带来的新功能。NX6的四大关键创新:更灵活、更有力、更协调和更高效。

  9. The geographic distribution and complex evolutionary history of the NX-2 trichothecene chemotype from Fusarium graminearum.

    Science.gov (United States)

    Kelly, Amy; Proctor, Robert H; Belzile, Francois; Chulze, Sofia N; Clear, Randall M; Cowger, Christina; Elmer, Wade; Lee, Theresa; Obanor, Friday; Waalwijk, Cees; Ward, Todd J

    2016-10-01

    Fusarium graminearum and 21 related species comprising the F. sambucinum species complex lineage 1 (FSAMSC-1) are the most important Fusarium Head Blight pathogens of cereal crops world-wide. FSAMSC-1 species typically produce type B trichothecenes. However, some F. graminearum strains were recently found to produce a novel type A trichothecene (NX-2) resulting from functional variation in the trichothecene biosynthetic enzyme Tri1. We used a PCR-RFLP assay targeting the TRI1 gene to identify the NX-2 allele among a global collection of 2515 F. graminearum. NX-2 isolates were only found in southern Canada and the northern U.S., where they were observed at low frequency (1.8%), but over a broader geographic range and set of cereal hosts than previously recognized. Phylogenetic analyses of TRI1 and adjacent genes produced gene trees that were incongruent with the history of species divergence within FSAMSC-1, indicating trans-species evolution of ancestral polymorphism. In addition, placement of NX-2 strains in the TRI1 gene tree was influenced by the accumulation of nonsynonymous substitutions associated with the evolution of the NX-2 chemotype, and a significant (PNX-2 branch (ω=1.16) in comparison to other branches (ω=0.17) in the TRI1 phylogeny. Parameter estimates were consistent with positive selection for specific amino-acid changes during the evolution of NX-2, but direct tests of positive selection were not significant. Phylogenetic analyses of fourfold degenerate sites and intron sequences in TRI1 indicated the NX-2 chemotype had a single evolutionary origin and evolved recently from a type B ancestor. Our results indicate the NX-2 chemotype may be indigenous, and possibly endemic, to southern Canada and the northern U.S. In addition, we demonstrate that the evolution of TRI1 within FSAMSC-1 has been complex, with evidence of trans-species evolution and chemotype-specific shifts in selective constraint. Published by Elsevier Inc.

  10. NX 5新功能全面展示(一)——NX 5设计模块改进介绍

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ 一、NX 5概述 与以往版本相比,NX 5具有更好的协同能力,能够不受系统约束条件的影响,在整个产品开发过程中实现更高的工作流程效率、缩短产品开发周期,并提供更高的产品质量和性能.

  11. Effects of Resistivity and Viscosity on m =0 Rise and Fall Time in the RFP

    Science.gov (United States)

    Futch, A. M.; Craig, D.; Hesse, R.; Jacobson, C. M.

    2016-10-01

    In the reversed field pinch (RFP), poloidal mode number m =0 fluctuations are driven in a sawtooth cycle via nonlinear coupling with unstable m =1 tearing modes. We explore how the rise and fall time of these m =0 fluctuations depends on resistivity and viscosity in visco-resistive MHD simulations using the DEBS code. Both the Lundquist number (S) and magnetic Prandtl number (Pr) affect the rise/fall time. Analysis of MST experimental data also shows that both the rise and fall times of the m =0 amplitude vary with S. The variation observed in experiment is consistent with simulation results for rise time, but shows some differences for fall time. Rise time is insensitive to the resistivity profile but depends slightly on the viscosity profile. Fall time is strongly correlated with the duration of the crash which depends on both resistivity and viscosity profiles. These results suggest that the rise and fall time of the m =0 modes at the sawtooth crash is not strongly influenced by the local resistivity near the resonant surface but instead is primarily determined by the overall dynamics of the entire sawtooth cycle. The role of viscosity is less clear though the edge viscosity affects the m =0 evolution more than the core. This work has been supported by the U.S.D.O.E.

  12. Resistive switching characteristics of Pt/TaOx/HfNx structure and its performance improvement

    Directory of Open Access Journals (Sweden)

    Qigang Zhou

    2013-03-01

    Full Text Available The refractory transition metal nitride (TMN film Hafnium nitride (HfNx was successfully prepared on silicon-based substrates as bottom electrodes for resistive random access memory (RRAM cells in Pt (top/metal oxide/ HfNx (bottom sandwich structure. The reproducible resistive switching (RS characteristics of the memory cells were studied systematically for RRAM applications. The advantages of adopting HfNx instead of Pt as bottom electrode material were demonstrated, including the improvement of the low resistive state value, the RS endurance and the uniformity of RS parameters. The composition and chemical bonding states of the prepared HfNx was analyzed by X-ray photoelectron spectroscopy (XPS technique. The nitrogen content in the HfNx and the Gibbs free energy of the corresponding metal oxide formation has great influences on the RS properties. The oxygen reservoir ability and diffusion barrier effect of the HfNx play a key role in the RS performance improvement of the RRAM devices.

  13. Structure and Friction Behavior of CrNx/a-C:H Nanocomposite Films

    Directory of Open Access Journals (Sweden)

    Lunlin Shang

    2014-01-01

    Full Text Available CrN and CrNx/a-C:H nanocomposite films were deposited on Si substrates by the magnetron sputtering technique. The structure, chemical state, and friction behavior of the CrNx/a-C:H films prepared at various CH4 content were studied systematically. The CrN film shows strong (111 and (220 orientation, while the CrNx/a-C:H films consist of the nanocrystalline CrNx or Cr particles embedded in an amorphous hydrocarbon (a-C:H matrix and show weak diffraction peaks, which is in accordance with the XPS analysis results. The typical Raman D and G peaks are observed, indicating that the separated amorphous carbon or CNx phase appears in the CrNx/a-C:H films. However, no chromium carbide was observed in all the as-deposited samples. From the SEM graphs, all the deposited films depicted a dense and compact microstructure with well-attached interface with the substrate. The average friction coefficient of the CrNx/a-C:H films largely decreased with increasing CH4 content.

  14. The comparison of visible-light photocatalytic activity for the degradation of propylene between Ag TiO2-x Nx and TiO2-x Nx%Ag/TiO2-x Nx 与 TiO2-x Nx 可见光催化降解丙烯的活性对比

    Institute of Scientific and Technical Information of China (English)

    张郴艳; 朱兆田; 彭琳珊; 马清晨; 王曼丽; 庞钰华; 何建英; 冯彩霞

    2016-01-01

    利用纳米管钛酸(NTA)和氨水的水热反应制得 TiO 2-x Nx 系列催化剂,并进一步通过热分解-机械研磨的方法在 TiO 2-x Nx 表面附着上银颗粒,制得 Ag/TiO 2-x Nx 系列催化剂。采用 X 射线衍射(XRD)、紫外-可见漫反射(DRS)、X 射线光电子能谱(XPS)等技术对催化剂进行了表征和分析。光催化氧化丙烯的实验对比了TiO 2-x Nx 与 Ag/TiO 2-x Nx 两个系列催化剂的可见光催化活性,考察了氧空位、晶型结构、氮含量和银颗粒对催化剂可见光催化活性的影响。结果表明,催化剂锐钛矿的晶型越好,氧空位含量越高,催化剂的可见光催化活性越好;贵金属银的电子捕获能力使得 Ag/TiO 2-x Nx 的可见光催化活性远高于 TiO 2-x Nx 催化剂。%TiO 2 -x Nx series of catalysts were prepared by hydrothermal reaction method using nanotubed titanic acid (denoted as NTA)and ammonia as raw materials.Furthermore,silver nanoparticles were loaded on the surface of TiO 2 -x Nx by thermal decomposition-mechanical grinding method to produce Ag/TiO 2 -x Nx photocatalysts,TiO 2 -x Nx catalysts were character-ized by X-ray diffraction (XRD),UV-Vis diffuse reflectance spectroscopy (DRS)and X-ray photoelectron spectroscopy (XPS).The visible-light activity of two series of photocatalysts, TiO 2 -x Nx and Ag/TiO 2 -x Nx ,were compared by the degradation of propylene.Some effects of oxygen vacancy,crystal structure,contents of doped nitrogen and loaded silver on the visible-light activity were also studied.Results show that the better anatase structure and the higher content of oxygen vacancy are the higher visible-light activity will be.In addition,the visible-light activity of Ag/TiO 2 -x Nx is much higher than that of TiO 2 -x Nx due to the strong trapping electron ability of noble metal silver.

  15. Digital development of products with NX9 for academical areas

    Science.gov (United States)

    Goanta, A. M.

    2015-11-01

    International competitiveness forced the manufacturing enterprises to look for new ways to accelerate the development of digital products through innovation, global alliances and strategic partnerships. In an environment of global research and development of distributed geographically, all members of the joint teams made up of companies and universities need to access updated and accurate information about products created by any of the type employed, student, teacher. Current design processes involve more complex products consisting of elements of design created by multiple teams, disciplines and suppliers using independent CAD systems. Even when using a 3D CAD mature technology, many companies fail to significantly reduce losses in the process, improve product quality or product type to ensure successful innovations to market arouse interest. These challenges require a radical rethinking of the business model, which belongs to the field of design, which must be based on digital development of products based on integrated files. Through this work, the author has proposed to provide both synthesis and transformations brought news of the integrated NX [1, 2, 3] from Siemens PLM Software 9, following a news results detailed documentary study, and personal results obtained by applying the same version, the digital and integrated development of a product type device test beams. Based on educational license received for NX 9 was made a detailed study of the innovations made by this release, and the application of some of them went to graphical modelling and getting all the documentation of a test device bearing beams. Also, were synthesized in terms of methodology, the steps to take to obtain graphical documentation. The results consist of: 3D models of all parts and assembly 3D model of the three-dimensional constraints of all component parts and not least respectively all drawings and assembly drawing. The most important consequence of the paper is the obtaining of

  16. Non Isolated and Non-Inverting Cockcroft Walton Multiplier Based Hybrid 2Nx Interleaved Boost Converter For Renewable Energy Applications

    DEFF Research Database (Denmark)

    Bhaskar, Mahajan Sagar; Padamanaban, Sanjeevi Kumar; Blaabjerg, Frede

    2016-01-01

    In this paper hybrid non isolated and non-invertingCockcroft-Walton multiplier based 2Nx InterleavedBoost converter (2Nx IBC) for renewable energy applications is presented. The presented hybrid boost converter topology is derived from non-inverting Nx Multilevel Boost Converter (Nx MBC......) and inverting Nx Multilevel Boost Converter (Nx MBC). In renewable energy applications, generated voltage needs to be stepped up with high conversion ratio using a DC-DC converter at voltage levels as per the application requirement. The advantages of the presentedtopology of interleaved converter are high...... voltage conversion ratio, reduce ripple, low voltage stress, non-inverting output voltage without utilizing the high duty cycle, coupled inductors and transformer. The main advantage of presented topology consists in increasing voltage gain by adding capacitor and diode into circuitry without disturbing...

  17. Backbone NxH compounds at high pressures.

    Science.gov (United States)

    Goncharov, Alexander F; Holtgrewe, Nicholas; Qian, Guangrui; Hu, Chaohao; Oganov, Artem R; Somayazulu, Maddury; Stavrou, Elissaios; Pickard, Chris J; Berlie, Adam; Yen, Fei; Mahmood, Mahmood; Lobanov, Sergey S; Konôpková, Zuzana; Prakapenka, Vitali B

    2015-06-01

    Optical and synchrotron x-ray diffraction diamond anvil cell experiments have been combined with first-principles theoretical structure predictions to investigate mixtures of N2 and H2 up to 55 GPa. Our experiments show the formation of structurally complex van der Waals compounds [see also D. K. Spaulding et al., Nat. Commun. 5, 5739 (2014)] above 10 GPa. However, we found that these NxH (0.5 < x < 1.5) compounds transform abruptly to new oligomeric materials through barochemistry above 47 GPa and photochemistry at pressures as low as 10 GPa. These oligomeric compounds can be recovered to ambient pressure at T < 130 K, whereas at room temperature, they can be metastable on pressure release down to 3.5 GPa. Extensive theoretical calculations show that such oligomeric materials become thermodynamically more stable in comparison to mixtures of N2, H2, and NH3 above approximately 40 GPa. Our results suggest new pathways for synthesis of environmentally benign high energy-density materials. These materials could also exist as alternative planetary ices.

  18. Backbone NxH compounds at high pressures

    Science.gov (United States)

    Goncharov, Alexander F.; Holtgrewe, Nicholas; Qian, Guangrui; Hu, Chaohao; Oganov, Artem R.; Somayazulu, Maddury; Stavrou, Elissaios; Pickard, Chris J.; Berlie, Adam; Yen, Fei; Mahmood, Mahmood; Lobanov, Sergey S.; Konôpková, Zuzana; Prakapenka, Vitali B.

    2015-06-01

    Optical and synchrotron x-ray diffraction diamond anvil cell experiments have been combined with first-principles theoretical structure predictions to investigate mixtures of N2 and H2 up to 55 GPa. Our experiments show the formation of structurally complex van der Waals compounds [see also D. K. Spaulding et al., Nat. Commun. 5, 5739 (2014)] above 10 GPa. However, we found that these NxH (0.5 < x < 1.5) compounds transform abruptly to new oligomeric materials through barochemistry above 47 GPa and photochemistry at pressures as low as 10 GPa. These oligomeric compounds can be recovered to ambient pressure at T < 130 K, whereas at room temperature, they can be metastable on pressure release down to 3.5 GPa. Extensive theoretical calculations show that such oligomeric materials become thermodynamically more stable in comparison to mixtures of N2, H2, and NH3 above approximately 40 GPa. Our results suggest new pathways for synthesis of environmentally benign high energy-density materials. These materials could also exist as alternative planetary ices.

  19. Space modeling with SolidWorks and NX

    CERN Document Server

    Duhovnik, Jože; Drešar, Primož

    2015-01-01

    Through a series of step-by-step tutorials and numerous hands-on exercises, this book aims to equip the reader with both a good understanding of the importance of space in the abstract world of engineers and the ability to create a model of a product in virtual space – a skill essential for any designer or engineer who needs to present ideas concerning a particular product within a professional environment. The exercises progress logically from the simple to the more complex; while SolidWorks or NX is the software used, the underlying philosophy is applicable to all modeling software. In each case, the explanation covers the entire procedure from the basic idea and production capabilities through to the real model; the conversion from 3D model to 2D manufacturing drawing is also clearly explained. Topics covered include modeling of prism, axisymmetric, symmetric, and sophisticated shapes; digitization of physical models using modeling software; creation of a CAD model starting from a physical model; free fo...

  20. Rene resultater

    DEFF Research Database (Denmark)

    Christiansen, Ask Vest

    ­manistiske dopingforskning og forskningen om cykelsportens kultur, præ­senteres. Som baggrund for de følgende analyser, indledes anden del med en redegørelse for mo­derne cykelsports struktur og organisation. Tre historiske faser afgrænses, og for hver af disse skildres ud­vik­lingen indenfor holdorganisation og...

  1. Seeding the m = 0 instability in dense plasma focus Z-pinches with a hollow anode

    CERN Document Server

    Liu, J X; McMahon, M; Tummel, K; Cooper, C; Higginson, D; Shaw, B; Povilus, A; Link, A; Schmidt, A

    2016-01-01

    The dense plasma focus (DPF) is a classic Z-pinch plasma device that has been studied for decades as a radiation source. The formation of the m = 0 plasma instability during the compression phase is linked to the generation of high-energy charged particle beams, which, when operated in deuterium, lead to beam-target fusion reactions and the generation of neutron yield. In this paper, we present a technique of seeding the m = 0 instability by employing a hollow in the anode. As the plasma sheath moves along the anode's hollow structure, a low density perturbation is formed and this creates a non-uniform plasma column which is highly unstable. Dynamics of the low density perturbation and preferential seeding of the m = 0 instability were studied in detail with fully kinetic plasma simulations performed in the Large Scale Plasma particle-in-cell code as well as with a simple snowplow model. The simulations showed that by employing an anode geometry with appropriate inner hollow radius, the neutron yield of the D...

  2. The potential for NX-1207 in benign prostatic hyperplasia: an update for clinicians.

    Science.gov (United States)

    Shore, Neal; Cowan, Barrett

    2011-11-01

    Lower urinary tract symptoms associated with benign prostatic hyperplasia (BPH) affect many older men and can have a significant impact on health-related quality of life. BPH is a progressive condition that may lead to complications including acute urinary retention. There exists an unmet need for a safe and effective, office-based, catheter-free therapy for BPH patients. NX-1207 is a promising first-in-class drug currently in phase III trials for the treatment of BPH. This review provides an overview of the NX-1207 trial program and considers its potential application for patients with symptoms related to BPH. NX-1207 is administered as an office-based procedure by transrectal intraprostatic injection under ultrasound guidance. NX-1207 has selective pro-apoptotic properties, which induce focal cell loss in prostate tissue, leading to prostate volume reduction with both short- and long-term symptomatic improvement. In four US clinical trials to date, NX-1207 has shown evidence of symptomatic improvement substantially better than currently approved BPH medications with no significant safety issues. Larger phase III trials are ongoing to confirm further the efficacy, safety, and tolerability for this minimally invasive, anesthetic-free, clinic-based treatment for BPH.

  3. NX Nastran在压力容器应力分析中的应用

    Institute of Scientific and Technical Information of China (English)

    谢涛; 刘岩; 郭涛

    2009-01-01

    NX Nastran具有很强的线性分析功能和非线性分析功能,能够满足压力容器应力分析的需求。以压力容器典型的受内压圆筒径向接管结构为例,利用NX CAD的强大建模功能以及CAD&CAE的无缝集成,进行了应力分析以及线性化处理,成功证明了NX Nastran在压力容器分析设计中应用的可行性、方便性。

  4. NxRepair: error correction in de novo sequence assembly using Nextera mate pairs.

    Science.gov (United States)

    Murphy, Rebecca R; O'Connell, Jared; Cox, Anthony J; Schulz-Trieglaff, Ole

    2015-01-01

    Scaffolding errors and incorrect repeat disambiguation during de novo assembly can result in large scale misassemblies in draft genomes. Nextera mate pair sequencing data provide additional information to resolve assembly ambiguities during scaffolding. Here, we introduce NxRepair, an open source toolkit for error correction in de novo assemblies that uses Nextera mate pair libraries to identify and correct large-scale errors. We show that NxRepair can identify and correct large scaffolding errors, without use of a reference sequence, resulting in quantitative improvements in the assembly quality. NxRepair can be downloaded from GitHub or PyPI, the Python Package Index; a tutorial and user documentation are also available.

  5. Spark Plasma Sintering Bulk Sm2 Fe17NxMagnets

    Institute of Scientific and Technical Information of China (English)

    Yue Ming; Zhang Dongtao; Ji Yongcheng; Zhang Jiuxing

    2004-01-01

    High performance Sm2Fe17Nx magnetic powders were fabricated by ball-milling method and were compacted using spark plasma sintering(SPS) technique.Effects of processing conditions on the magnetic properties and decomposition dynamic of the magnets were investigated.It is found that higher sintering temperature improves the densification of the magnets, while deteriorates their magnetic properties simultaneously due to the decomposition of the Sm2Fe17Nx.Sintering at lower temperature can preserve the crystal structure of Sm2Fe17Nx compound, while the powders cannot be consolidated into a fully dense compact.An increased compressive pressure leads to better magnetic properties and higher density for the magnet at the same sintering temperature.

  6. NxRepair: error correction in de novo sequence assembly using Nextera mate pairs

    Directory of Open Access Journals (Sweden)

    Rebecca R. Murphy

    2015-06-01

    Full Text Available Scaffolding errors and incorrect repeat disambiguation during de novo assembly can result in large scale misassemblies in draft genomes. Nextera mate pair sequencing data provide additional information to resolve assembly ambiguities during scaffolding. Here, we introduce NxRepair, an open source toolkit for error correction in de novo assemblies that uses Nextera mate pair libraries to identify and correct large-scale errors. We show that NxRepair can identify and correct large scaffolding errors, without use of a reference sequence, resulting in quantitative improvements in the assembly quality. NxRepair can be downloaded from GitHub or PyPI, the Python Package Index; a tutorial and user documentation are also available.

  7. Drude's Model Optical Parameters and the Color of TiNx Films Obtained Through Reflectivity Measurements

    Science.gov (United States)

    Alves, L. A.; Sagás, J. C.; Damião, A. J.; Fontana, L. C.

    2015-02-01

    Titanium nitride (TiN) has been applied as decorative coating due to its high reflectivity and goldish color, having high hardness and wear resistance. In the present work, TiNx films were deposited by grid-assisted magnetron sputtering. The color and reflectivity were investigated by spectrophotometry as a function of the working gas ratio N2/Ar used during films deposition. The crystalline phases were identified by X-ray diffraction pattern (XRD). The TiNx plasma frequency ( ω p) and the relaxation time ( τ) were determined by fitting the experimental reflectivity curves, according to the Drude model. The color parameters obtained by the CieLab method were used to compare TiNx films with gold film.

  8. Realization of Colored Multicrystalline Silicon Solar Cells with SiO2/SiNx:H Double Layer Antireflection Coatings

    Directory of Open Access Journals (Sweden)

    Minghua Li

    2013-01-01

    Full Text Available We presented a method to use SiO2/SiNx:H double layer antireflection coatings (DARC on acid textures to fabricate colored multicrystalline silicon (mc-Si solar cells. Firstly, we modeled the perceived colors and short-circuit current density (Jsc as a function of SiNx:H thickness for single layer SiNx:H, and as a function of SiO2 thickness for the case of SiO2/SiNx:H (DARC with fixed SiNx:H (refractive index n=2.1 at 633 nm, and thickness = 80 nm. The simulation results show that it is possible to achieve various colors by adjusting the thickness of SiO2 to avoid significant optical losses. Therefore, we carried out the experiments by using electron beam (e-beam evaporation to deposit a layer of SiO2 over the standard SiNx:H for 156×156 mm2 mc-Si solar cells which were fabricated by a conventional process. Semisphere reflectivity over 300 nm to 1100 nm and I-V measurements were performed for grey yellow, purple, deep blue, and green cells. The efficiency of colored SiO2/SiNx:H DARC cells is comparable to that of standard SiNx:H light blue cells, which shows the potential of colored cells in industrial applications.

  9. NX-1207: a novel investigational drug for the treatment of benign prostatic hyperplasia.

    Science.gov (United States)

    Shore, Neal

    2010-02-01

    Lower urinary tract symptoms (LUTS) associated with benign prostatic hyperplasia (BPH) is a common affliction among older men that can have significant impact on health-related quality of life. BPH is a progressive condition that can lead to complications including acute urinary retention (AUR) and to surgical intervention. There is an ongoing need for new, safe and effective treatments for BPH. Currently available therapies have significant safety and efficacy limitations. NX-1207 is a promising first-in-class drug currently in Phase III trials for the treatment of BPH. This review provides an overview of BPH and currently approved medical treatments and drugs as described in the literature and treatment practice guidelines in the past 10 years, an outline of the results of the Phase II trials of NX-1207 and an expert opinion on the role NX-1207 may play in the treatment of men with clinical BPH. This review aims to introduce readers to NX-1207, a new treatment for BPH that is administered in an office-based procedure by transrectal intraprostatic injection under ultrasound guidance. NX-1207 has selective pro-apoptotic properties, which induces focal cell loss in prostate leading to prostate volume reduction with both short- and long-term symptomatic improvement. In four US clinical trials to date, NX-1207 has shown evidence of symptomatic improvement substantially better than currently approved BPH medications with no significant safety issues. Larger Phase III trials are ongoing to further confirm the efficacy, safety and tolerability for this minimally invasive, anesthetic free, clinic-based treatment for BPH.

  10. NX-PVKA levels before and after hepatectomy of hepatocellular carcinoma as predictors of patient survival: a preliminary evaluation of an improved assay for PIVKA-II.

    Science.gov (United States)

    Nanashima, Atsushi; Abo, Takafumi; Taura, Naota; Shibata, Hideki; Ichikawa, Tatsuki; Takagi, Katsunori; Arai, Junichi; Oyama, Shousaburou; Nagayasu, Takeshi

    2013-06-01

    Although the protein-induced vitamin K absence or antagonist-II (PIVKA-II) is used as a prognostic marker in hepatocellular carcinoma (HCC), a newly-improved assay, NX-PVKA (PIVKA-II measured using P-11 and P-16 antibodies) and NX-PVKA-R (ratio of PIVKA-II and NX-PVKA), are more accurate markers of PIVKA-II. We conducted a prospectively preliminary analysis of the relationship between NX-PVKA-R and clinicopathological parameters and prognosis in 22 patients with HCC who underwent hepatectomy and measured changes of this marker's levels after treatment. Median value of PIVKA-II (80 mAU/ml), NX-PVKA (60 mAU/ml), NX-PVKA-R (1.5) and NX-PVKA-D (difference of markers, 15 mAU/ml) were determined. Tumor relapse was observed in six patients, and the one year relapse-free survival rate was 88%. Correlation between PIVKA-II or alpha-fetoprotein levels and NX-PVKA, NX-PVKA-R or -D levels was significant (pPIVKA-II, NX-PVKA and NX-PVKA-R tended to be higher than in patients without pre-treatment, but this difference was not significant (p>0.10). For macroscopic findings, NX-PVKA-R for the confluent-nodular type was significantly higher than that for the simple-nodular type (p<0.05). The tumor-free survival rate in the group with a high NX-PVKA-R was significantly lower than that in the group with a low NX-PVKA-R group (p<0.05). In patients with tumor recurrence, postoperative NX-PVKA-R increased again. We conclude that a high value of NX-PVKA-R after hepatectomy for HCC reflects malignant potential and predicts early recurrence in patients with HCC.

  11. 详解NX 8.5新增功能

    Institute of Scientific and Technical Information of China (English)

    郭涛

    2012-01-01

      NX 8.5软件在现有功能的基础上增加了一些新功能和许多客户驱动的增强功能,这些改进有助于缩短创建、分析、交换和标注数据所需的时间,本文将从提高设计效率、优化仿真平台和加快NC编程和加工速度等方面具体介绍NX 8.5的具体改变.

  12. I-deas TMG to NX Space Systems Thermal Model Conversion and Computational Performance Comparison

    Science.gov (United States)

    Somawardhana, Ruwan

    2011-01-01

    CAD/CAE packages change on a continuous basis as the power of the tools increase to meet demands. End -users must adapt to new products as they come to market and replace legacy packages. CAE modeling has continued to evolve and is constantly becoming more detailed and complex. Though this comes at the cost of increased computing requirements Parallel processing coupled with appropriate hardware can minimize computation time. Users of Maya Thermal Model Generator (TMG) are faced with transitioning from NX I -deas to NX Space Systems Thermal (SST). It is important to understand what differences there are when changing software packages We are looking for consistency in results.

  13. Intel NX to PVM 3.2 message passing conversion library

    Science.gov (United States)

    Arthur, Trey; Nelson, Michael L.

    1993-01-01

    NASA Langley Research Center has developed a library that allows Intel NX message passing codes to be executed under the more popular and widely supported Parallel Virtual Machine (PVM) message passing library. PVM was developed at Oak Ridge National Labs and has become the defacto standard for message passing. This library will allow the many programs that were developed on the Intel iPSC/860 or Intel Paragon in a Single Program Multiple Data (SPMD) design to be ported to the numerous architectures that PVM (version 3.2) supports. Also, the library adds global operations capability to PVM. A familiarity with Intel NX and PVM message passing is assumed.

  14. I-deas TMG to NX Space Systems Thermal Model Conversion and Computational Performance Comparison

    Science.gov (United States)

    Somawardhana, Ruwan

    2011-01-01

    CAD/CAE packages change on a continuous basis as the power of the tools increase to meet demands. End -users must adapt to new products as they come to market and replace legacy packages. CAE modeling has continued to evolve and is constantly becoming more detailed and complex. Though this comes at the cost of increased computing requirements Parallel processing coupled with appropriate hardware can minimize computation time. Users of Maya Thermal Model Generator (TMG) are faced with transitioning from NX I -deas to NX Space Systems Thermal (SST). It is important to understand what differences there are when changing software packages We are looking for consistency in results.

  15. Application of NX Siemens PLM software in educational process in preparing students of engineering branch

    Science.gov (United States)

    Sadchikova, G. M.

    2017-01-01

    This article discusses the results of the introduction of computer-aided design NX by Siemens Plm Software to the classes of a higher education institution. The necessity of application of modern information technologies in teaching students of engineering profile and selection of a software product is substantiated. The author describes stages of the software module study in relation to some specific courses, considers the features of NX software, which require the creation of standard and unified product databases. The article also gives examples of research carried out by the students with the various software modules.

  16. Cosmological expansion and contraction from Pauli exclusion principle in $M0$-branes

    CERN Document Server

    Sepehri, Alireza; Bamba, Kazuharu; Capozziello, Salvatore; Pincak, Richard; Pradhan, Anirudh; Rahaman, Farook; Saridakis, Emmanuel N

    2016-01-01

    We show that the Pauli exclusion principle in a system of $M0$-branes can give rise to the expansion and contraction of the universe which is located on an $M3$-brane. We start with a system of $M0$-branes with high symmetry, which join mutually and form pairs of $M1$-anti-$M1$-branes. The resulting symmetry breaking creates gauge fields that live on the $M1$-branes and play the role of graviton tensor modes, which induce an attractive force between the $M1$ and anti-$M1$ branes. Consequently, the gauge fields that live on the $M1$-branes, and the scalar fields which are attached symmetrically to all parts of these branes, decay to fermions that attach anti-symmetrically to the upper and lower parts of the branes, and hence the Pauli exclusion principle emerges. By closing $M1$-branes mutually, the curvatures produced by parallel spins will be different from the curvatures produced by anti-parallel spins, and this leads to an inequality between the number of degrees of freedom on the boundary surface and the ...

  17. LPC1100:低成本Cortex-M0微控制器

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ NXP宣布,旗下基于ARM Conex-M0的LPC1100微控制器系列产品将于12月分销上市.该控制器性能优越、简单易用、功耗低,更重要的是,它能显著降低所有8/16位应用的代码长度.初期面市的LPCIl00系列有15种产品,能满足所有那些寻求用可扩展ARM架构来进行整个产品开发过程的8/16位用户,满足其产品开发无缝整合需求.

  18. Quantification of process variables for carbothermic synthesis of UC1-xNx fuel microspheres

    Science.gov (United States)

    Lindemer, T. B.; Silva, C. M.; Henry, J. J.; McMurray, J. W.; Voit, S. L.; Collins, J. L.; Hunt, R. D.

    2017-01-01

    This report details the continued investigation of process variables involved in converting sol-gel-derived, urania-carbon microspheres to ∼820-μm-dia. UC1-xNx fuel kernels in flow-through, vertical Mo and W crucibles at temperatures up to 2123 K. Experiments included calcining of air-dried UO3-H2O-C microspheres in Ar and H2-containing gases, conversion of the resulting UO2-C kernels to dense UO2:2UC in the same gases and vacuum, and its conversion in N2 to UC1-xNx (x = ∼0.85). The thermodynamics of the relevant reactions were applied extensively to interpret and control the process variables. Producing the precursor UO2:2UC kernel of ∼96% theoretical density was required, but its subsequent conversion to UC1-xNx at 2123 K was not accompanied by sintering and resulted in ∼83-86% of theoretical density. Increasing the UC1-xNx kernel nitride component to ∼0.98 in flowing N2-H2 mixtures to evolve HCN was shown to be quantitatively consistent with present and past experiments and the only useful application of H2 in the entire process.

  19. The geographic distribution and complex evolutionary history of the NX-2 trichothecene chemotype from Fusarium graminearum

    Science.gov (United States)

    F. graminearum and 21 related species form a species complex (FSAMSC-1) characterized by production of type B trichothecenes. However, some F. graminearum strains were recently found to produce NX-2, a novel type A trichothecene, resulting from variation in the trichothecene biosynthetic enzyme Tri1...

  20. Ni-toughened nc-TiN/a-SiNx nanocomposite thin films

    NARCIS (Netherlands)

    Zhang, Sam; Sun, Deen; Fu, Yongqing; Pei, Y.T.; Hosson, J.Th.M. De

    2005-01-01

    Nanocomposite nc-TiN/a-SiNx thin films containing Ni up to similar to 40 at.% were prepared by co-sputtering of Ti, TiNi and Si3N4 targets in ArN2 gas atmosphere. Adjusting TiNi/(Ti+TiNi) target power ratio altered chemical composition, microstructure and consequently mechanical properties. X-ray ph

  1. The Equation R[subscript n]x = b over Rhotrices

    Science.gov (United States)

    Aminu, Abdulhadi

    2010-01-01

    In this article, we consider the concept of rhotrices and present one-sided system of the form R[subscript n]x = b, where R[subscript n] is an n-dimensional rhotrix, x the unknown n-dimensional rhotrix vector and b the right-hand-side rhotrix vector.

  2. Recent results on the peformance of EFOS, NP and NX hydrogen masers

    Science.gov (United States)

    Reinhardt, V.; Ingold, J. S.; Stalder, T.; Saifi, M.; Dachel, P.; Wardrip, S. C.

    1984-01-01

    In response to a NASA Goddard Space Flight Center Work Assignment, Bendix Field Engineering Corporation evaluated the performance of the Oscilloquartz EPOS-2 hydrogen maser along with that of NASA NX-3 and NP-2 hydrogen masers in early 1983. This paper presents the results of that evaluation.

  3. On some binomial coefficients related to the evaluation of tan(nx)

    CERN Document Server

    Ma, Shi-Mei

    2012-01-01

    The purpose of this paper is to study some binomial coefficients which are related to the evaluation of tan(nx). We mainly present a connection between these binomial coefficients and the coefficients of a family of derivative polynomials for tangent and secant.

  4. A non-platinum counter electrode, MnNx/C, for dye-sensitized solar cell applications

    Science.gov (United States)

    Kushwaha, Suman; M. P., Karthikayini; Wang, Guanxiong; Mandal, Sudip; Bhobe, Preeti. A.; Ramani, Vijay K.; Priolkar, K. R.; Ramanujam, Kothandaraman

    2017-10-01

    A non-platinum metal catalyst, MnNx/C was synthesized via the high-pressure pyrolysis route. The combination of X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS) studies indicated the presence of Mn in +2 oxidation state surrounded by four N atoms. The peak-to-peak separation (ΔEp) of the more negative peak pair observed for I3-/I- redox couple over MnNx/C catalyst was 20 mV lower than that of the Pt catalyst, indicating high reversibility of the redox couple over MnNx/C catalyst. The charge transfer resistance of the MnNx/C electrode, as measured by the impedance spectroscopy, is ∼ 2 Ω higher than that of Pt, which resulted slightly lower short circuit current (Jsc) value for MnNx/C over Pt, however the fill factor (FF) and power conversion efficiency (PCE) values of MnNx/C was slightly higher and comparable to that of Pt respectively. Hence; replacing Pt with MnNx/C would decrease the cost of DSSCs.

  5. Phase I and pharmacologic study of liposomal lurtotecan, NX 211: urinary excretion predicts hematologic toxicity.

    Science.gov (United States)

    Kehrer, Diederik F S; Bos, Annelies M; Verweij, Jaap; Groen, Harry J; Loos, Walter J; Sparreboom, Alex; de Jonge, Maja J A; Hamilton, Marta; Cameron, Terri; de Vries, Elisabeth G E

    2002-03-01

    To determine the maximum-tolerated and recommended dose, toxicity profile, and pharmacokinetics of the liposomal topoisomerase I inhibitor lurtotecan (NX 211) administered as a 30-minute intravenous infusion once every 3 weeks in cancer patients. NX 211 was administered by peripheral infusion. Dose escalation decisions were based on all toxicities during the first cycle as well as pharmacokinetic parameters. Serial plasma, whole blood, and urine samples were collected for up to 96 hours after the end of infusion, and drug levels were determined by high-performance liquid chromatography. Twenty-nine patients (16 women; median age, 56 years; range, 39 to 74 years) received 77 courses of NX 211 at dose levels of 0.4 (n = 3), 0.8 (n = 6), 1.6 (n = 3), 3.2 (n = 6), 3.8 (n = 6), and 4.3 mg/m(2) (n = 5). Neutropenia and thrombocytopenia were the dose-limiting toxicities and were not cumulative. Other toxicities were mild to moderate. Nine patients had stable disease while undergoing treatment. The systemic clearance of lurtotecan in plasma and whole blood was 0.82 +/- 0.78 L/h/m(2) and 1.15 +/- 0.96 L/h/m(2), respectively. Urinary recovery (Fu) of lurtotecan was 10.1% +/- 4.05% (range, 4.9% to 18.9%). In contrast to systemic exposure measures, the dose excreted in urine (ie, dose x Fu) was significantly related to the percent decrease in neutrophil and platelet counts at nadir (P NX 211 are neutropenia and thrombocytopenia. The recommended dose for phase II studies is 3.8 mg/m(2) once every 3 weeks. Pharmacologic data suggest a relationship between exposure to lurtotecan and NX 211-induced clinical effects.

  6. Overvågning af fugle 1997-98, resultater fra feltstationerne

    DEFF Research Database (Denmark)

    Denne rapport præsenterer Miljø- og Energiministeriets seks feltstationer med beskrivelse af deres historie, naturforhold og overvågningsprogram. Resultaterne af fugleobservationer i 1997 beskrives i sammenhæng med tidligere års udvikling. Desuden præsenteres resultater af tre undersøgelser af...... omkring øerne. Alkene havde en god ynglesæson. Ynglesuccesen var på 74%, og bestanden er steget til 620 par mod 360 i 1986. Standardfangst af småfugle om foråret lå på gennemsnittet af de sidste 10 års fangst. Efteråret var det dårligste i feltstationens historie med en fangst på 49% af de tidligere års...... der blev produceret over 2 unger pr. par. Efter 1989 er antallet af reder stagneret, og der er siden produceret 0,5 unge pr. par. Årsagen er, at fuglene i den sidste periode tilbringer kortere tid i kolonien, da de må flyve langt for at komme til gode fiskepladser. Undersøgelserne viser desuden...

  7. Emergence and expansion of cosmic space as due to M0-branes

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, Alireza, E-mail: alireza.sepehri@uk.ac.ir [Faculty of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), P.O. Box 55134-441, Maragha (Iran, Islamic Republic of); Setare, Mohammad Reza, E-mail: rezakord@ipm.ir [Department of Science, University of Kurdistan, Campus of Bijar, Bijar (Iran, Islamic Republic of); Capozziello, Salvatore, E-mail: capozziello@na.infn.it [Dipartimento di Fisica, Universita di Napoli Federico II, 80126, Naples (Italy); INFN Sez. di Napoli, Compl. Univ. di Monte S. Angelo, Edificio G, 80126, Naples (Italy); Gran Sasso Science Institute (INFN), Viale F. Crispi, 7, 67100, L’Aquila (Italy)

    2015-12-29

    Recently, Padmanabhan discussed that the difference between the number of degrees of freedom on the boundary surface and the number of degrees of freedom in a bulk region causes the accelerated expansion of the universe. The main question arising is: what is the origin of this inequality between the surface degrees of freedom and the bulk degrees of freedom? We answer this question in M-theory. In our model, first M0-branes are compactified on one circle and ND0-branes are created. Then ND0-branes join each other, grow, and form one D5-branes. Next, the D5-brane is compactified on two circles and our universe’s D3-brane, two D1-branes and some extra energies are produced. After that, one of the D1-branes, which is closer to the universe’s brane, gives its energy into it, and this leads to an increase in the difference between the numbers of degrees of freedom and the occurring inflation era. With the disappearance of this D1-brane, the number of degrees of freedom of boundary surface and bulk region become equal and inflation ends. At this stage, extra energies that are produced due to the compactification cause an expansion of the universe and deceleration epoch. Finally, another D1-brane dissolves in our universe’s brane, leads to an inequality between degrees of freedom, and there occurs a new phase of acceleration.

  8. 基于NX4.0的支架零件的高速铣削

    Institute of Scientific and Technical Information of China (English)

    张花平

    2015-01-01

    结合具体实例,介绍了NX4.0软件的三维建模和高速铣削加工编程的方法。通过NX CAD模块建立支架零件三维模型,利用NX CAM模块对支架零件高速铣削加工进行数控编程,并采用仿真加工对刀具轨迹进行验证。

  9. Emergence and expansion of cosmic space as due to M0-branes

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, Alireza [Shahid Bahonar University, Faculty of Physics, Kerman (Iran, Islamic Republic of); Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha (Iran, Islamic Republic of); Setare, Mohammad Reza [University of Kurdistan, Department of Science, Bijar (Iran, Islamic Republic of); Capozziello, Salvatore [Universita di Napoli Federico II, Dipartimento di Fisica, Naples (Italy); Complutense Univ. di Monte S. Angelo, Naples (Italy); Gran Sasso Science Institute (INFN), L' Aquila (Italy); INFN Sezione di Napoli, Naples (Italy)

    2015-12-15

    Recently, Padmanabhan (arXiv:1206.4916 [hepth]) discussed that the difference between the number of degrees of freedom on the boundary surface and the number of degrees of freedom in a bulk region causes the accelerated expansion of the universe. The main question arising is: what is the origin of this inequality between the surface degrees of freedom and the bulk degrees of freedom? We answer this question in M-theory. In our model, first M0-branes are compactified on one circle and N D0-branes are created. Then N D0-branes join each other, grow, and form one D5-branes. Next, the D5-brane is compactified on two circles and our universe's D3-brane, two D1-branes and some extra energies are produced. After that, one of the D1-branes, which is closer to the universe's brane, gives its energy into it, and this leads to an increase in the difference between the numbers of degrees of freedom and the occurring inflation era. With the disappearance of this D1-brane, the number of degrees of freedom of boundary surface and bulk region become equal and inflation ends. At this stage, extra energies that are produced due to the compactification cause an expansion of the universe and deceleration epoch. Finally, another D1-brane dissolves in our universe's brane, leads to an inequality between degrees of freedom, and there occurs a new phase of acceleration. (orig.)

  10. Structure and Magnetic Properties of Sm2Fe17Nx Sintering Magnets Prepared by Spark Plasma Sintering

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Bulk Sm2Fe17Nx sintering magnet was fabricated by spark plasma sintering(SPS) technique. The effects of sintering pressure and sintering temperature on the magnetic properties of the Sm2Fe17Nx magnet were investigated. As a result, the density of the magnet is obviously improved with the increase of sintering pressure, but the coercivity drops since Sm2Fe17Nx has decomposed into SmN, α-Fe and N2. When sintering temperature was only above 200 ℃ under 1 GPa sintering pressure, the coercivity even begins to decrease, which indicates that high pressure promotes the decomposition of the Sm2Fe17Nx at lower temperature. The decomposition is also proved by the decrease of nitrogen and increase of α-Fe in the magnets.

  11. Hard and relaxed a-SiNxHy films prepared by PECVD: Structure analysis and formation mechanism

    Science.gov (United States)

    Xu, Xiangdong; He, Qiong; Fan, Taijun; Jiang, Yadong; Huang, Long; Ao, Tianhong; Ma, Chunqian

    2013-01-01

    Amorphous hydrogenated silicon nitride (a-SiNxHy) films were prepared by plasma-enhanced chemical vapor deposition (PECVD). Their chemical structures and mechanical properties were investigated. Results reveal that there are four kinds of Sisbnd N groups, involving Si3N4, Hsbnd Sisbnd N3, H2sbnd Sisbnd N2, and Si3sbnd Sisbnd N, in the a-SiNxHy films. Deposition at 300 °C and flow ratio of SiH4/NH3 = 30/30 sccm leads to the yield of special a-SiNxHy films, in which per two high-N-coordinated Sisbnd N groups (Si3N4 or Hsbnd Sisbnd N3) are distributed with one inter-buffer group (Si3sbnd Sisbnd N). Such a-SiNxHy films exhibit ultralow residual stress (-0.17 MPa), high elastic modulus (206.9 GPa) and high uniformity, holding great potential for device fabrications. The chemical reactions for the formation of a-SiNxHy films were proposed, and the thermodynamic calculations indicate that the utilization ratio of NH3 reagent in the chemical reactions increases significantly with the increase of SiH4 flow, but the utilization ratio of Sisbnd N bonds in the a-SiNxHy formation decreases inversely. This work discloses valuable information on the chemical reactions and structures for a-SiNxHy films, and suggests a route to the preparation of a-SiNxHy films with high hardness and low stress by conventional PECVD.

  12. Application of rapid thermal processing on SiNx thin film to solar cells

    Institute of Scientific and Technical Information of China (English)

    Youjie LI; Peiqing LUO; Zhibin ZHOU; Rongqiang CUI; Jianhua HUANG; Jingxiao WANG

    2008-01-01

    Rapid thermal processing (RTP) of SiNx thin films from PECVD with low temperature was investigated. A special processing condition of this technique which could greatly increase the minority lifetime was found in the experiments. The processing mechanism and the application of the technique to silicon solar cells fabrication were dis-cussed. A main achievement is an increase of the minority lifetime in silicon wafer with SiNx thin film by about 200% after the RTP was reached. PC-1D simulation results exhibit an enhancement of the efficiency of the solar cell by 0.42% coming from the minority lifetime improvement. The same experiment was also conducted with P-diffusion silicon wafers, but the increment of minority lifetime is just about 55%. It could be expected to improve the solar cell efficiency if it would be used in silicon solar cells fabrication with the combination of laser firing contact technique.

  13. Influència de la dislèxia en els resultats d'eficàcia del test IGF

    OpenAIRE

    Samper Gasset, Celina

    2013-01-01

    En el present treball es pretén determinar si existeix una correlació entre la dislèxia (dificultat en l'aprenentatge de la lectura i l'escriptura) i els resultats en el test IGF (intel·ligència general i factorial), concretament els resultats d'eficàcia. Es va seleccionar una mostra d'alumnes a la que, en primer lloc, es va diagnosticar o descartar la dislèxia, i després se'ls-hi va administrar l'IGF. No es van observar diferències significatives en els resultats d'eficàcia del test IGF entr...

  14. On the structure of the Nx phase of symmetric dimers: inferences from NMR.

    Science.gov (United States)

    Hoffmann, Anke; Vanakaras, Alexandros G; Kohlmeier, Alexandra; Mehl, Georg H; Photinos, Demetri J

    2015-02-07

    NMR measurements on a selectively deuterated liquid crystal dimer CB-C9-CB, exhibiting two nematic phases, show that the molecules in the lower temperature nematic phase, N(X), experience a chiral environment and are ordered about a uniformly oriented director throughout the macroscopic sample. The results are contrasted with previous interpretations that suggested a twist-bend spatial variation of the director. A structural picture is proposed wherein the molecules are packed into highly correlated chiral assemblies.

  15. Molecular Characterizations of Surface Proteins Hemagglutinin and Neuraminidase from Recent H5Nx Avian Influenza Viruses

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Hua; Carney, Paul J.; Mishin, Vasiliy P.; Guo, Zhu; Chang, Jessie C.; Wentworth, David E.; Gubareva, Larisa V.; Stevens, James; Schultz-Cherry, S.

    2016-04-06

    ABSTRACT

    During 2014, a subclade 2.3.4.4 highly pathogenic avian influenza (HPAI) A(H5N8) virus caused poultry outbreaks around the world. In late 2014/early 2015, the virus was detected in wild birds in Canada and the United States, and these viruses also gave rise to reassortant progeny, composed of viral RNA segments (vRNAs) from both Eurasian and North American lineages. In particular, viruses were found with N1, N2, and N8 neuraminidase vRNAs, and these are collectively referred to as H5Nx viruses. In the United States, more than 48 million domestic birds have been affected. Here we present a detailed structural and biochemical analysis of the surface antigens of H5N1, H5N2, and H5N8 viruses in addition to those of a recent human H5N6 virus. Our results with recombinant hemagglutinin reveal that these viruses have a strict avian receptor binding preference, while recombinantly expressed neuraminidases are sensitive to FDA-approved and investigational antivirals. Although H5Nx viruses currently pose a low risk to humans, it is important to maintain surveillance of these circulating viruses and to continually assess future changes that may increase their pandemic potential.

    IMPORTANCEThe H5Nx viruses emerging in North America, Europe, and Asia pose a great public health concern. Here we report a molecular and structural study of the major surface proteins of several H5Nx influenza viruses. Our results improve the understanding of these new viruses and provide important information on their receptor preferences and susceptibilities to antivirals, which are central to pandemic risk assessment.

  16. SYNTHESIS AND MICROSTRUCTURE OF SUPERHARD TiN/SiNx MULTILAYER THIN FILMS

    Institute of Scientific and Technical Information of China (English)

    M.P. LeBlanc; Z.F. Zhou; Y.G. Shen; Y.W. Mai; K.Y. Li

    2005-01-01

    Multilayer thin films of TiN/SiNx have been deposited onto heated Si 100 substrates (200℃) by reactive dc-magnetron sputtering from Ti and Si targets in an Ar-N2 gas mixture. The rotation speed of the substrate holder was varied from 1 to 20rpm, while target currents were held constant, to produce bilayer periods varying from approximately 22 to 0.6nm. These multilayer films were characterized by atomic force microscopy (AFM), cross-sectional transmission electron microscopy (TEM), scanning electron microscopy (SEM), and microhardness measurements. TEM and SEM studies showed elimination of columnar structure in TiN, owing to the incorporation of amorphous SiNx layers. The crystallinity of TiN and amorphous nature of SiNx were confirmed by high resolution TEM. An optimum rotation speed was observed, at which hardness was a maximum. The resulting bilayer period was found to be approximately 1.6nm,which resulted in a significant improvement in microhardness (~5TGPa). The rms surface roughness for this film was less than 1.5nm.

  17. Mechanism of oxygen reduction reaction catalyzed by Fe(Co)-Nx/C.

    Science.gov (United States)

    Chen, Xin; Li, Fan; Zhang, Nanlin; An, Li; Xia, Dingguo

    2013-11-28

    Fe(Co)-Nx/C is an important candidate catalyst for the next generation proton exchange membrane fuel cells (PEMFC), but the relationship between the structure and the oxygen reduction activity is still unclear. In this work, the different active site structures of Fe(Co)-Nx/C are explored and the oxygen reduction catalytic mechanisms are studied by means of density functional theory (DFT). Different kinds of Me-Nx/C motifs, including the edge site around the graphene sheet and the internal site in the graphene sheet (as well as in the graphyne sheet), are constructed and investigated. The calculated results suggest that for the edge active sites, high O2 adsorption strength may result in direct oxidation of metal ions thus losing their catalytic activity. The internal active sites are stable in acidic solution and display catalytic ability of oxygen reduction. The catalytic activity of the internal site is affected by three factors: the kind of internal metal ion, the bonded nitrogen or carbon atoms with metal ions and the size of the graphene sheet.

  18. Comparing Luminex NxTAG-Respiratory Pathogen Panel and RespiFinder-22 for multiplex detection of respiratory pathogens.

    Science.gov (United States)

    Beckmann, Christiane; Hirsch, Hans H

    2016-08-01

    Respiratory tract infection (RTI) involves a variety of viruses and bacteria, which can be conveniently detected by multiplex nucleic acid amplification testing (NAT). To compare the novel Luminex-based NxTAG-Respiratory Pathogen Panel (NxTAG-RPP) with the routine multiplex-ligation-NAT based RespiFinder-22® (RF-22), 282 respiratory specimens including nasopharyngeal swabs (71%), broncho-alveolar lavage (27%), throat swabs, tracheal secretions, and sputum (2%) from 116 children and 155 adults were extracted using a Corbett CAS1200 (Qiagen), and analyzed in parallel by the routine RF-22 and NxTAG-RPP. Concordant results were obtained in 263 (93.3%) cases consisting of concordant positives in 167 (59.2%) and concordant negatives in 96 (34%). Results were discordant in 19 (6.7%) consisting of 15 positive:negative, and 4 negative:positive results by NxTAG-RPP versus RF-22, respectively. Co-infections were observed in 10.3% with NxTAG-RPP and in 5.9% with RF-22. Most additional viral pathogens identified by the NxTAG-RPP involved dual infections with rhinovirus and RSV. Discordant samples were mainly due to low genome signals of Ct less than 36, when retested by QNAT suggesting a higher sensitivity of the NxTAG-RPP, also when detecting multiple infections. Hands-on time after extraction for 24 and 96 samples was 0.25 and <0.5 hr for the NxTAG-RPP, and 2 and 4 hr for the RF-22, respectively. The median turn-around time was 6 hr (range 5-7 hr) for NxTAG-RPP and 12 hr (range 8-16 hr) for RF-22. The NxTAG-RPP showed comparable detection rates for most respiratory pathogens, while hands-on and turn-around time were considerably shorter. The clinical significance of detecting multiple viruses needs further clinical evaluation. J. Med. Virol. 88:1319-1324, 2016. © 2016 Wiley Periodicals, Inc.

  19. Telmisartan protects 5/6 Nx rats against renal injury by enhancing nNOS-derived NO generation via regulation of PPARγ signaling

    OpenAIRE

    Zou, Rong; He, Yong; Li, Yue-Qiang; Han, Ming; Ma, Zu-Fu; Liu, Xiao-Cheng; Zeng, Rui; Shao, Jv-Fang; Guo, Yan-Chao; He, Xiao-Yu; Yang, Ping; Xu, Gang; Wang, Cong-Yi; YAO, Ying

    2014-01-01

    A 5/6 nephrectomized (Nx) rat model was employed to address the impact of telmisartan on CKD related renal injury and the underlying molecular mechanisms. It was noted that telmisartan provided protection for rats against 5/6 Nx induced lethality. Telmisartan treated 5/6 Nx rats manifested improved renal function as characterized by the higher GFR but lower urinary albumin, BUN and Scr as compared with that of control rats. Telmisartan treatment also significantly decreased systolic blood pre...

  20. Overvågning af fugle, sæler og planter 1999-2000, med resultater fra feltstationerne

    DEFF Research Database (Denmark)

    af spættet sæl i den vestlige del af Østersøen, Kattegat og Limfjorden blev overvåget ved hjælp af optællinger fra fly i 2000. Formålet er at etablere en tidsserie med indekstal der kan bruges til at vurdere forandringer i bestandene af spættet sæl. Tællingerne foretages hvert andet år. Den årlige......Med det formål at følge svingninger i fugles og planters forekomst foretages der årligt overvågning på Miljø- og Energiministeriets feltstationer. Denne rapport præsenterer registreringer fra 1999 samt resultater af et forskningsprojekt fra en af feltstationerne. Desuden præsenteres resultater fra....... Der blev imidlertid konstateret tilbagegang hos almindelig ryle*, brushane* og dobbeltbekkasin. Alle tre arter har vist tilbagegange på omkring 50% gennem de sidste 10 år. Vejlerne er en vigtig lokalitet for disse arter herhjemme med hen ved halvdelen af landets yng-le-par. Hættemåge havde en god...

  1. Serum NX-DCP as a New Noninvasive Model to Predict Significant Liver Fibrosis in Chronic Hepatitis C.

    Science.gov (United States)

    Saito, Masaya; Yano, Yoshihiko; Hirano, Hirotaka; Momose, Kenji; Yoshida, Masaru; Azuma, Takeshi

    2015-02-01

    Finding a noninvasive method to predict liver fibrosis using inexpensive and easy-to-use markers is important. We aimed to clarify whether NX-des-γ-carboxyprothrombin (NX-DCP) could become a new noninvasive model to predict liver fibrosis in hepatitis C virus (HCV) related liver disease. We performed a prospective cohort study on a consecutive group of 101 patients who underwent liver biopsy for HCV-related liver disease at Kobe University Hospital. Laboratory measurements were performed on the same day as the biopsy. Factors associated with significant fibrosis (F3-4) were assessed by multivariate analyses. A comparison of predictive ability between multivariate factors and abovementioned noninvasive models was also performed. Increase in serum NX-DCP was significantly related to increase in fibrosis stage (P = 0.006). Moreover, NX-DCP was a multivariate factor associated with the presence of significant fibrosis F 3-4 (median 21 of F0-2 group vs. median 22 of F3-4 group with P = 0.002). The AUC of NX-DCP showed no significant differences compared with those of the AST-to-platelet ratio index (APRI), modified-APRI, the Göteborg University Cirrhosis Index (GUCI), the Lok index, the Hui score, cirrhosis discriminating score (CDS) and the Pohl score (P > 0.05). NX-DCP correlated positively with fibrosis stage and could discriminate well between HCV-related patients with or without significant fibrosis. Moreover, NX-DCP had a similar predictive ability to the abovementioned models, and thereby could be a new noninvasive prediction tool for fibrosis.

  2. Reduction of Hg1 - xCdxTe native oxide during the SiNx deposition process

    Science.gov (United States)

    Sudo, G.; Kajihara, N.; Miyamoto, Y.; Tanikawa, K.

    1987-11-01

    Electron cyclotron resonance plasma chemical vapor deposition enables low-temperature SiNx deposition on Hg1-xCdxTe (MCT). The SiNx film has an excellent interface on MCT with a low surface state density of 1.0×1011 cm-2 eV-1 and a low fixed charge of -1.4×1011 cm-2. A detailed analysis by x-ray photoelectron spectroscopy and Auger electron spectroscopy spectra of Te, Cd, and Si at the SiNx/MCT interface indicated that the SiNx deposition reduces the naturally grown MCT native oxide. The oxygen taken from Te oxidizes SiH4 and produces silicon oxides which remain in the SiNx film. Since a chemical shift caused by oxidized Cd at the fresh surface of MCT is very slight, intentionally oxidized samples were used to confirm the above reaction. The analysis of the shape of the Si(2p) peak at the interface indicated that the silicon oxides are composed of SiO and SiO2. Thermodynamic considerations support such a mechanism.

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

    Institute of Scientific and Technical Information of China (English)

    吴灶全; 刘梦星; 秦丽平; 叶树明; 陈杭

    2015-01-01

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

  4. Radical prostatectomy. Results and indications; Indications et resultats de la prostatectomie radicale

    Energy Technology Data Exchange (ETDEWEB)

    Jacqmin, D. [Hopitaux universitaires de Strasbourg, 67 - Strasbourg (France)

    1997-12-31

    Radical prostatectomy is the surgical curative treatment of localized prostate cancer. The survival is good in young patients (<70) with T2 N0M0 tumors and more than 10 year`s life expectancy. Side-effects are urinary incontinence, impotence and anastomosis stricture. Quality of life should be considered as an important factor for the choice of the patient between radical prostatectomy, radiotherapy and follow-up. (author)

  5. APPLICATION OF MSC ADAMS – NX NASTRAN/FEMAP INTERFACE IN STRENGTH CALCULATIONS OF TRUCK FRAMES

    Directory of Open Access Journals (Sweden)

    Adam PRZEMYK

    2016-06-01

    Full Text Available In this paper, the finite element method (FEM is used to calculate the strength of truck frames by integrating the MSC Adams software, for dynamics analysis of mechanical systems, and the NX Nastran/Femap software. At the same time, a method for reducing degrees of freedom is been developed based on the Craig–Bampton method. The interface is applied in order to calculate the strength of the frame in the selected truck, which runs on the test track. The selected model of truck can be treated as the virtual prototype that is useful in the design process.

  6. Utilizing NX Advanced Simulation for NASA's New Mobile Launcher for Ares-l

    Science.gov (United States)

    Brown, Christopher

    2010-01-01

    This slide presentation reviews the use of NX to simulate the new Mobile Launcher (ML) for the Ares-I. It includes: a comparison of the sizes of the Saturn 5, the Space Shuttle, the Ares I, and the Ares V, with the height, and payload capability; the loads control plan; drawings of the base framing, the underside of the ML, beam arrangement, and the finished base and the origin of the 3D CAD data. It also reviews the modeling approach, meshing. the assembly Finite Element Modeling, the model summary. and beam improvements.

  7. Research of Multi-axis NC Machining Method of Cylindrical Cam Based on UG NX

    Directory of Open Access Journals (Sweden)

    Liang Qianhua

    2017-01-01

    Full Text Available We have focused significant efforts on developing solutions for precision machining of cylindrical cams based on UG NX. A variety of processing method are put forward according to the digital model for a cylindrical cam which has been derived through parametric design, all of which are made a detailed comparison, analysis, research, elaborated. Simulation processing, post processing and NC program are carried out though optimized processing scheme. It will provide a reference for the numerical control programming of four-Coordinated axis.

  8. On the Diophantine equation (12n)x+(35n)y=(37n)z%关于丢番图方程(12n)x(35n)y=(37n)z

    Institute of Scientific and Technical Information of China (English)

    杨志娟; 翁建欣

    2012-01-01

      Using the properties of congruences and the order of elements, we show that, for any positive integer n, the Diophantine equation (12n)x+(35n)y =(37n)z has no solution other than (x, y, z)=(2, 2, 2) in positive integers.%  运用同余及元素阶的性质,证明对任意正整数n,丢番图方程(12n)x+(35n)y=(37n)z仅有正整数解(x, y, z)=(2,2,2)。

  9. Siemens PLM Software NX 8软件提供全方面增强功能

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    2011年10月18日,西门子工业自动化有限公司旗下的全球领先的产品生命周期管理(PLM)软件和服务提供商Siemens PLM Software推出最新版本的NX8软件。该软件是Siemens PLM Software将计算机辅助设计、制造和工程分析(CAD/CAM/CAE)完全集成的解决方案。NX8在其CAE方案中加入了大量的增强功能——包括用于解决世界上最具挑战性的仿真问题及应用广泛的NX Nastran软件。

  10. Organic thin film transistors with a SiO2/SiNx/SiO2 composite insulator layer

    Institute of Scientific and Technical Information of China (English)

    Liu Xiang; Liu Hui

    2011-01-01

    We have investigated a SiO2/SiNx/SiO2 composite insulation layer structured gate dielectric for an organic thin film transistor (OTFT) with the purpose of improving the performance of the SiO2 gate insulator.The SiO2/SiNx/SiO2 composite insulation layer was prepared by magnetron sputtering.Compared with the same thickness of a SiO2 insulation layer device,the SiO2/SiNx/SiO2 composite insulation layer is an effective method of fabricating OTFT with improved electric characteristics and decreased leakage current.Electrical parameters such as carrier mobility by field effect measurement have been calculated.The performances of different insulating layer devices have been studied,and the results demonstrate that when the insulation layer thickness increases,the off-state current decreases.

  11. Discovery of ursolic acid prodrug (NX-201): Pharmacokinetics and in vivo antitumor effects in PANC-1 pancreatic cancer.

    Science.gov (United States)

    Yoon, Yeohong; Lim, Jee Woong; Kim, Jiyoung; Kim, Younggi; Chun, Keun Ho

    2016-11-15

    The aim of our study was to develop ursolic acid (UA) prodrugs in order to overcome UA's weakness, which has an extremely low bioavailability. UA-medoxomil (NX-201), one of our UA prodrugs, showed an improved bioavailability about 200times better than UA in rodent model. According to in vivo test performed with PANC-1 xenograft SCID mouse model, tumor growth rate decreased dose-dependently and 100mg/kg dose of NX-201 had an anticancer effect comparable to gemcitabine. Most of all the combination of NX-201 (50mg/kg, po, daily) and gemcitabine (40mg/kg, iv, 2timesperweek) even reduced tumor size after three weeks. Copyright © 2016 Elsevier Ltd. All rights reserved.

  12. Step-by-Step Laser Crystallization of Amorphous Si:H/SiNx:H Multilayer for Active Layer in Microcavities

    Institute of Scientific and Technical Information of China (English)

    QIAN Bo; CHEN San; CEN Zhan-Hong; CHEN Kun-Ji; LIU Yan-Song; XU Jun; MA Zhong-Yuan; LI Wei; HUANG Xin-Fan

    2006-01-01

    @@ We report the crystallization and photoluminescence (PL) properties of amorphous Si:H/SiNx :H multilayer (ML)films treated by step-by-step laser annealing. The results of Raman measurements show that the nanocrystalline Si (nc-Si) grains are formed in the a-Si:H layers under the constrained growth mechanism. The blue shift of PL peak with grain size is observed and can be attributed to the quantum confinement effect. For comparison, we also report the crystallization and PL of a-Si:H/SiNx :H ML samples by normal one-step treatment. This method of step-by-step laser treatment will be a candidate to make nc-Si quantum dots in amorphous Si:H/SiNx :H ML as an active layer in microcavities.

  13. Strong Green Light Emission from Low-Temperature Grown a-SiNx:H Film after Different Oxidation Routes

    Institute of Scientific and Technical Information of China (English)

    DONG Heng-Ping; HUANG Rui; WANG Dan-Qing; CHEN Kun-Ji; LI Wei; MA Zhong-Yuan; XU Jun; HUANG Xin-Fan

    2008-01-01

    Room-temperature deposited amorphous silicon nitride (a-SiNx: H) films exhibit intense green light emission after post-treated by plasma oxidation, thermal oxidation and natural oxidation, respectively. All the photoluminescence (PL) spectra are peaked at around 500 nm, independent of oxidation method and excitation wavelength.Compared with the PL results from oxidized a-Si:H and as-deposited a-SiNx :H samples, it is indicated that not only oxygen but also nitrogen is of an important role in enhancing light emission from the oxidized a-SiNx:H.Combining the PL results with the analyses of the bonding configurations as well as chemical compositions of the films, the strong green light emission is suggested to be from radiative recombination in luminescent centres related to N-Si-O bonds.

  14. Ultra-thin a-SiNx protective overcoats for hard disks and read/write heads

    Institute of Scientific and Technical Information of China (English)

    Ding Wan-Yu; Xu Jun; Lu Wen-Qi; Deng Xin-Lu; Dong Chuang

    2009-01-01

    This paper reports that amorphous silicon nitride(a-SiNx)overcoats were deposited at room temperature by microwave ECR plasma enhanced unbalanced magnetron sputtering.The 2 nm a-SiNx overcoat has better anti-corrosion properties than that of reference a-CNx overcoats(2-4.5 nm).The superior anti-corrosion performance is attributed to its stoichiomctric bond structure,where 94.8% Si atoms form Si-N asymmetric stretching vibration bonds.The N/Si ratio is 1.33 as in the stoichiometry of Si3N4 and corresponds to the highest hardness of 25.0 GPa.The surface is atomically smooth with RMS<0.2 nm.The ultra-thin a-SiNx overcoats are promising for hard disks and read/write heads protective coatings.

  15. Using measured 30-150 kVp polychromatic tungsten x-ray spectra to determine ion chamber calibration factors, Nx (Gy C(-1)).

    Science.gov (United States)

    Mercier, J R; Kopp, D T; McDavid, W D; Dove, S B; Lancaster, J L; Tucker, D M

    2000-10-01

    Two methods for determining ion chamber calibration factors (Nx) are presented for polychromatic tungsten x-ray beams whose spectra differ from beams with known Nx. Both methods take advantage of known x-ray fluence and kerma spectral distributions. In the first method, the x-ray tube potential is unchanged and spectra of differing filtration are measured. A primary standard ion chamber with known Nx for one beam is used to calculate the x-ray fluence spectrum of a second beam. Accurate air energy absorption coefficients are applied to the x-ray fluence spectra of the second beam to calculate actual air kerma and Nx. In the second method, two beams of differing tube potential and filtration with known Nx are used to bracket a beam of unknown Nx. A heuristically derived Nx interpolation scheme based on spectral characteristics of all three beams is described. Both methods are validated. Both methods improve accuracy over the current half value layer Nx estimating technique.

  16. Post-mastectomy radiotherapy in pT3N0M0 breast cancer: is it needed?

    Science.gov (United States)

    Helintö, M; Blomqvist, C; Heikkilä, P; Joensuu, H

    1999-09-01

    It is not been established whether breast cancer patients who have a primary tumor 5 cm or larger but no axillary nodal or distant metastases at the time of the diagnosis (pT3N0M0) benefit from post-operative radiation therapy after mastectomy. We identified 81 patients with T3N0M0 breast cancer out of the total of 4190 breast cancer patients treated in one university radiotherapy department from 1987 to 1994 from the department patient registry, and examined the clinical records and histopathological slides. Only 38 of the 81 patients had true pT3N0M0 breast cancer after the review (0.9% of the 4190 new breast cancer patients registered in the department from 1987 to 1994). Three (60%) of the five patients who were not treated with post-operative radiation therapy developed locoregional recurrence of breast cancer as compared with only three (9%) of the 33 patients who were given post-operative radiotherapy during a median follow-up of 58 months (P = 0.0003). Patients who were given post-operative radiotherapy had a better distant disease-free survival rate (P = 0.04) and overall survival rate (P = 0.03) than the ones who were not treated with radiation therapy after surgery. Of the 29 patients who had chest wall irradiation only, one had in-field recurrence at the surgical scar, one both at the scar and the unirradiated axilla, and only one (3%) solely in the axilla. Patients with true pT3N0M0 breast cancer are rare. The results suggest that women with pT3N0M0 breast cancer benefit from post-operative radiotherapy, but the value of irradiating the dissected ipsilateral axilla remains unsettled.

  17. SiNx Coatings Deposited by Reactive High Power Impulse Magnetron Sputtering: Process Parameters Influencing the Nitrogen Content.

    Science.gov (United States)

    Schmidt, Susann; Hänninen, Tuomas; Goyenola, Cecilia; Wissting, Jonas; Jensen, Jens; Hultman, Lars; Goebbels, Nico; Tobler, Markus; Högberg, Hans

    2016-08-10

    Reactive high power impulse magnetron sputtering (rHiPIMS) was used to deposit silicon nitride (SiNx) coatings for biomedical applications. The SiNx growth and plasma characterization were conducted in an industrial coater, using Si targets and N2 as reactive gas. The effects of different N2-to-Ar flow ratios between 0 and 0.3, pulse frequencies, target power settings, and substrate temperatures on the discharge and the N content of SiNx coatings were investigated. Plasma ion mass spectrometry shows high amounts of ionized isotopes during the initial part of the pulse for discharges with low N2-to-Ar flow ratios of <0.16, while signals from ionized molecules rise with the N2-to-Ar flow ratio at the pulse end and during pulse-off times. Langmuir probe measurements show electron temperatures of 2-3 eV for nonreactive discharges and 5.0-6.6 eV for discharges in transition mode. The SiNx coatings were characterized with respect to their composition, chemical bond structure, density, and mechanical properties by X-ray photoelectron spectroscopy, X-ray reflectivity, X-ray diffraction, and nanoindentation, respectively. The SiNx deposition processes and coating properties are mainly influenced by the N2-to-Ar flow ratio and thus by the N content in the SiNx films and to a lower extent by the HiPIMS frequencies and power settings as well as substrate temperatures. Increasing N2-to-Ar flow ratios lead to decreasing growth rates, while the N content, coating densities, residual stresses, and the hardness increase. These experimental findings were corroborated by density functional theory calculations of precursor species present during rHiPIMS.

  18. DEVELOPING NX MICROWAVE DEVICE LIBRARY BASED ON .NET%基于.NET的NX微波器件库开发

    Institute of Scientific and Technical Information of China (English)

    陈曼华

    2010-01-01

    对CAD/CAM系统NX 5进行简单介绍,并针对NX系统NX Open for .NET的二次开发方式进行研究.描述了在开发环境中的具体步骤,并结合企业应用中的具体需求,设计了微波器件库软件系统的内部和网络构架,采用visual C#开发语言和SQL server数据库实现了基于.NET平台的微波器件库开发.

  19. From I-Deas to NX : Changing the Design Application and Creating Work Instructions for a Large Industrial Product Assembly

    OpenAIRE

    Mäkinen, Harri

    2014-01-01

    The objective of this thesis was to provide Citec Oy Ab with information whether it is beneficial to switch from using Siemens I-Deas to using Siemens NX, as the CAD design and drafting application, within a specific product group of Citec’s customer, an industrial product company. To acquire this information a case project in NX was made. This was the main method of this project type thesis. The project work included building the products main top level assembly and creating an assembly draw...

  20. Oxidation and thermal fatigue of coated and uncoated NX-188 nickel-base alloy in a high velocity gas stream

    Science.gov (United States)

    Johnson, J. R.; Young, S. G.

    1972-01-01

    A cast nickel-base superalloy, NX-188, coated and uncoated, was tested in a high-velocity gas stream for resistance to oxidation and thermal fatigue by cycling between room temperature and 980, 1040, and 1090 C. Contrary to the behavior of more conventional nickel-base alloys, uncoated NX-188 exhibited the greatest weight loss at the lowest test temperature. In general, on the basis of weight change and metallographic observations a coating consisting of vapor-deposited Fe-Cr-Al-Y over a chromized substrate exhibited the best overall performance in resistance to oxidation and thermal fatigue.

  1. CFD Analysis of Thermal Control System Using NX Thermal and Flow

    Science.gov (United States)

    Fortier, C. R.; Harris, M. F. (Editor); McConnell, S. (Editor)

    2014-01-01

    The Thermal Control Subsystem (TCS) is a key part of the Advanced Plant Habitat (APH) for the International Space Station (ISS). The purpose of this subsystem is to provide thermal control, mainly cooling, to the other APH subsystems. One of these subsystems, the Environmental Control Subsystem (ECS), controls the temperature and humidity of the growth chamber (GC) air to optimize the growth of plants in the habitat. The TCS provides thermal control to the ECS with three cold plates, which use Thermoelectric Coolers (TECs) to heat or cool water as needed to control the air temperature in the ECS system. In order to optimize the TCS design, pressure drop and heat transfer analyses were needed. The analysis for this system was performed in Siemens NX Thermal/Flow software (Version 8.5). NX Thermal/Flow has the ability to perform 1D or 3D flow solutions. The 1D flow solver can be used to represent simple geometries, such as pipes and tubes. The 1D flow method also has the ability to simulate either fluid only or fluid and wall regions. The 3D flow solver is similar to other Computational Fluid Dynamic (CFD) software. TCS performance was analyzed using both the 1D and 3D solvers. Each method produced different results, which will be evaluated and discussed.

  2. UG NX7.5用户初始化设置技巧

    Institute of Scientific and Technical Information of China (English)

    唐昌维

    2014-01-01

    UG NX7.5是UG(Unigraphics NX)是Siemens PLM Software公司出的一款三维设计软件,以其强大的功能性、灵活性、易用性受到了很多设计师的追捧,但是由于文化、喜好、软件定位的原因,UG NX的默认初始化设置却一直让国内的用户们不甚满意,因此基于NX7.5版本,简要介绍了桌面快捷图标的创建、标题栏的更改、默认保存路径的更改、工具栏的调整及角色创建、默认首选项的设置,以方便大家定制满意的使用环境。

  3. The ML1Nx2 Phosphatidylinositol 3,5-Bisphosphate Probe Shows Poor Selectivity in Cells.

    Science.gov (United States)

    Hammond, Gerald R V; Takasuga, Shunsuke; Sasaki, Takehiko; Balla, Tamas

    2015-01-01

    Phosphatidylinositol (3,5)-bisphosphate (PtdIns(3,5)P2) is a quantitatively minor phospholipid in eukaryotic cells that plays a fundamental role in regulating endocytic membrane traffic. Despite its clear importance for cellular function and organism physiology, mechanistic details of its biology have so far not been fully elucidated. In part, this is due to a lack of experimental tools that specifically probe for PtdIns(3,5)P2 in cells to unambiguously identify its dynamics and site(s) of action. In this study, we have evaluated a recently reported PtdIns(3,5)P2 biosensor, GFP-ML1Nx2, for its veracity as such a probe. We report that, in live cells, the localization of this biosensor to sub-cellular compartments is largely independent of PtdIns(3,5)P2, as assessed after pharmacological, chemical genetic or genomic interventions that block the lipid's synthesis. We therefore conclude that it is unwise to interpret the localization of ML1Nx2 as a true and unbiased biosensor for PtdIns(3,5)P2.

  4. Molecular metal-Nx centres in porous carbon for electrocatalytic hydrogen evolution.

    Science.gov (United States)

    Liang, Hai-Wei; Brüller, Sebastian; Dong, Renhao; Zhang, Jian; Feng, Xinliang; Müllen, Klaus

    2015-08-07

    Replacement of precious platinum with efficient and low-cost catalysts for electrocatalytic hydrogen evolution at low overpotentials holds tremendous promise for clean energy devices. Here we report a novel type of robust cobalt-nitrogen/carbon catalyst for the hydrogen evolution reaction (HER) that is prepared by the pyrolysis of cobalt-N4 macrocycles or cobalt/o-phenylenediamine composites and using silica colloids as a hard template. We identify the well-dispersed molecular CoNx sites on the carbon support as the active sites responsible for the HER. The CoNx/C catalyst exhibits extremely high turnover frequencies per cobalt site in acids, for example, 0.39 and 6.5 s(-1) at an overpotential of 100 and 200 mV, respectively, which are higher than those reported for other scalable non-precious metal HER catalysts. Our results suggest the great promise of developing new families of non-precious metal HER catalysts based on the controlled conversion of homogeneous metal complexes into solid-state carbon catalysts via economically scalable protocols.

  5. 关于F(y(n),y(n-m)=0型微分方程求解方法

    Institute of Scientific and Technical Information of China (English)

    谢光海

    2010-01-01

    对于高阶微分方程,能够求解的类型很少.本文用高等数学的方法,巧妙地解决了形如F(y(m),y(n-m)=0(n>m)这一类高阶微分方程的求解方法,并找出了对应的参数解公式.

  6. CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY: Large Storage Window in a-SiNx/nc-Si/a-SiNx Sandwiched Structure for Nanocrystalline Silicon Floating Gate Memory Application

    Science.gov (United States)

    Wang, Xiang; Huang, Jian; Ding, Hong-Lin; Zhang, Xian-Gao; Yu, Lin-Wei; Huang, Xin-Fan; Li, Wei; Chen, Kun-Ji

    2008-07-01

    An a-SiNx/nanocrystalline silicon [(nc-Si)/a-SiNx] sandwiched structure is fabricated in a plasma enhanced chemical vapour deposition (PECVD) system at low temperature (250° C). The nc-Si layer is fabricated from a hydrogen-diluted silane mixture gas by using a layer-by-layer deposition technique. Atom force microscopy measurement shows that the density of nc-Si is about 2 × 1011 cm-2. By the pretreatment of plasma nitridation, low density of interface states and high-quality interface between the Si substrate and a-SiNx insulator layer are obtained. The density of interface state at the midgap is calculated to be 1 × 1010 cm-2eV-1 from the quasistatic and high frequency C - V data. The charging and discharging property of nc-Si quantum dots is studied by capacitance-voltage (C - V) measurement at room temperature. An ultra-large hysteresis is observed in the C - V characteristics, which is attributed to storage of the electrons and holes into the nc-Si dots. The long-term charge-loss process is studied and ascribed to low density of interface states at SiNx/Si substrate.

  7. Preparation and thermoelectric properties of M0.05Ca0.95MnO3%M0.05Ca0.95MnO3的制备及其热电性能

    Institute of Scientific and Technical Information of China (English)

    许洁; 魏长平; 贾坤

    2011-01-01

    采用溶胶-凝胶法,以硝酸盐为原料,在常压空气气氛中于1 000℃烧结8 h制备出CaMnO3和M0.05Ca0.95MnO3(M=Sr2+,Sm3+)块体材料。利用X线衍射、扫描电子显微镜等研究材料的物相和微观形貌,考察Sr2+和Sm3+M+掺杂对CaMnO3的高温热电性能参数Seebeck系数、电阻率和功率因子的影响。研究结果表明:制备的样品具有单一的物相,结构致密;金属离子Sr2+和Sm3+掺杂可以有效地改善其热电性能;当Sm3+的掺杂量为0.05时可获得最佳的热电性能,600℃时功率因子为23×10-5W·m-1·K-2。%CaMnO3 and M0.05Ca0.95MnO3 (M=Sr2+, Sm3+) samples were synthesized by sol-gel method and sintered in air at 1 000 "C for 8 h with nitrates as starting materials. The phase composition and microstructure were studied by XRD and SEM. Thermoelectric properties such as the Seebeck coefficient, electrical resistivity and power factor of M0.05Ca0.95MnO3 samples were studied. The results show that theM0.05Ca0.95MnO3 samples have single phase and condensed microstructure. The samples substituted by metal ions(Sr2+, Sm3+) enhance the electrical transmission performance effectively, and the highest power factor is 23×10-5 W·m-1·K-2 at 600 ℃ for the sample of Sm0.05Ca0.95MnO3.

  8. Effective Passivation of Large Area Black Silicon Solar Cells by SiO2/SiNx:H Stacks

    Directory of Open Access Journals (Sweden)

    Zengchao Zhao

    2014-01-01

    Full Text Available The performance of black silicon solar cells with various passivation films was characterized. Large area (156×156 mm2 black silicon was prepared by silver-nanoparticle-assisted etching on pyramidal silicon wafer. The conversion efficiency of black silicon solar cell without passivation is 13.8%. For the SiO2 and SiNx:H passivation, the conversion efficiency of black silicon solar cells increases to 16.1% and 16.5%, respectively. Compared to the single film of surface passivation of black silicon solar cells, the SiO2/SiNx:H stacks exhibit the highest efficiency of 17.1%. The investigation of internal quantum efficiency (IQE suggests that the SiO2/SiNx:H stacks films decrease the Auger recombination through reducing the surface doping concentration and surface state density of the Si/SiO2 interface, and SiNx:H layer suppresses the Shockley-Read-Hall (SRH recombination in the black silicon solar cell, which yields the best electrical performance of b-Si solar cells.

  9. An evidence-based review of NX1207 and its potential in the treatment of benign prostatic hyperplasia

    Directory of Open Access Journals (Sweden)

    Kunit T

    2014-07-01

    Full Text Available Thomas Kunit, Lukas LusuardiDepartment of Urology and Andrology, Paracelsus Medical University Salzburg, Salzburg, AustriaAbstract: In elderly men, benign prostatic hyperplasia is often associated with lower urinary tract symptoms, and its prevalence rises with age. Lower urinary tract symptoms can be very bothersome and lead to a decrease in health-related quality of life. Furthermore, benign prostatic hyperplasia is a progressive disease that can lead to serious complications like acute urinary retention. Medical treatment with α1-blockers or 5α-reductase inhibitors is recommended by the European Association of Urology. On the other hand, there are some new innovations such as NX1207. The aim of this review is to summarize the published data. NX1207 is a new drug that is administered by transrectal intraprostatic injection under ultrasound guidance. The substance leads to prostate volume reduction and symptomatic improvement. However, patient numbers are still low and currently treatment with NX1207 is still experimental.Keywords: BPH, NX 1207, hyperplasia, LUTS, prostate

  10. OPTIMIZATION OF TECHNOLOGY IN PROCESSING THE LANDMARK ”SUCTION CAP” WITH NX 7.5 SOFTWARE

    Directory of Open Access Journals (Sweden)

    BLANARU Viorel

    2011-06-01

    Full Text Available This paper is to present the optimization processing of the landmark suction cap with NX software 7.5. It has been done the modeling CAD of the landmark 3D. It has been projected the technology to execution CAM of the landmark where they revealed aspects of processing sequence and technological parameters.

  11. A density functional theory study of oxygen reduction reaction on non-PGM Fe-Nx-C electrocatalysts.

    Science.gov (United States)

    Kattel, Shyam; Atanassov, Plamen; Kiefer, Boris

    2014-07-21

    First-principles density functional theory (DFT) calculations were performed to explain the stability of catalytically active sites in Fe-Nx-C electrocatalysts, their ORR activity and ORR mechanism. The results show that the formation of graphitic in-plane Fe-N4 sites in a carbon matrix is energetically favorable over the formation of Fe-N2 sites. Chemisorption of ORR species O2, O, OH, OOH, and H2O and O-O bond breaking in peroxide occur on both Fe-N2 and Fe-N4 sites. In addition to the favorable interaction of ORR species, the computed free energy diagrams show that elementary ORR reaction steps on Fe-Nx sites are downhill. Thus, a complete ORR is predicted to occur via a single site 4e(-) mechanism on graphitic Fe-Nx (x = 2, 4) sites. Because of their higher stability and working potential for ORR, Fe-N4 sites are predicted to be prime candidate sites for ORR in pyrolyzed Fe-Nx-C electrocatalysts.

  12. OPTIMIZATION OF THE TEHNOLOGICAL PROCESS OF THE PART ‘’CYLINDER PISTON” WITH NX 7.5 SOFTWARE

    Directory of Open Access Journals (Sweden)

    EFTIMIE Dorin

    2012-11-01

    Full Text Available This paper aims to present the optimization of processing the part “piston cylinder” with NX 7.5 software. CAD modeling is realized and analyzed with finite elements (CAE simulating deformation and maximum stretching and virtual technology manufacturing (CAM where were highlighted aspects regarding the sequence of the manufacturing operations and the technological parameters.

  13. On solutions of $f(x)+f(a_1x)+...+f(a_Nx)=0$ and related equations

    CERN Document Server

    Almira, J M

    2011-01-01

    We study some properties of the solutions of the functional equation $$f(x)+f(a_1x)+...+f(a_Nx)=0,$$ which was introduced in the literature by Mora, Cherruault and Ziadi in 1999, for the case $a_k=k+1$, $k=1,2,...,N$ and studied by Mora in 2008 and Mora and Sepulcre in 2009 and 2011.

  14. Nonlinear sigma-model in the case of rectangular Nx. alpha. N matrices in two-dimensional euclidean space

    Energy Technology Data Exchange (ETDEWEB)

    Chekhov, L.O.

    1985-06-01

    Matrix nonlinear sigma-model is considered in the case of rectangular matrices of the dimension Nx..alpha..N. Renormalizability of the model with respect to ..alpha.. and 1/N is demonstrated for the case of two-dimensional Euclidean space. Validity of the chiral identity is proved in the operator expansion for the renormalized theory.

  15. Fabrication and Photocatalytic Property of One-Dimensional SrTiO3/TiO2-xNx Nanostructures

    Directory of Open Access Journals (Sweden)

    Huarong Zhang

    2013-01-01

    Full Text Available One-dimensional SrTiO3/TiO2−xNx nanostructures were prepared by the hydrothermal method and investigated by X-ray diffraction (XRD, transmission electron microscopy (TEM, X-ray photoelectron spectroscopy (XPS, and ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS measurements. The photocatalytic activities of the prepared samples were evaluated by photodegrading the methylene blue (MB solution. According to the characterizations, the intermediate product of SrTiO3/titanate nanotubes was presented after hydrothermal processing of the TiO2−xNx nanoparticles with the mixed solution of NaOH and Sr(NO32. The final product of SrTiO3/TiO2−xNx nanorods was obtained after calcining the intermediate. As compared to the TiO2−xNx nanoparticles, the absorption performance of SrTiO3/titanate nanotubes or SrTiO3/TiO2−xNx nanorods was depressed, instead of improving it. The mechanisms of the absorption property changes were discussed. The SrTiO3/TiO2−xNx nanorods presented better photocatalytic activity than the TiO2−xNx nanoparticles or nanorods. However, due to overmuch adsorption, the SrTiO3/titanate nanotubes gave ordinary photocatalytic performances.

  16. Preparation and electrochemical properties of LiMn1.95M0.05O4 (M = Cr, Ni)

    Institute of Scientific and Technical Information of China (English)

    YU Zemin; ZHAO Liancheng

    2007-01-01

    The preparation process and electrochemical properties of LiMn2O4 and LiMn1.95M0.05O4 (M = Cr, Ni) were studied.The results show that the decomposition temperature range of xerogel prepared with lithium acetate and manganese acetate as raw materials is large and the decomposition speed is slow.Oxygen consumed is apt to get a prompt supplement during the preparation of LiMn2O4,and carbonization of the organic matter can be reduced or avoided,which is favorable to the combination of lithium and manganese.Using lithium acetate,manganese acetate, chromium nitrate,and nickel nitrate as raw materials and adopting the citric acid complexing method,it has been found that the prepared powders have high purity,high quality stability,and even doping characters. With the increase of sintering temperature,the particle size and crystal lattice constant of LiMn1.95M0.05O4 (M = Cr, Ni) enhance.However,the purity of the product is relatively high and has no obvious change,which is advantageous to the control of the quality of LiMn1.95M0.05O4 (M = Cr, NJ).Doping with a small amount of Cr3+ and Ni2+ can stabilize the spinel structure of LiMn2O4,suppress the Jahn-Teller effect,and improve the cycling properties but reduce the initial capacity.

  17. Evaluation of the effect of sorafenib using serum NX-des-γ-carboxyprothrombin in patients with hepatocellular carcinoma.

    Science.gov (United States)

    Miyahara, Koji; Nouso, Kazuhiro; Morimoto, Yuki; Tomoda, Takeshi; Kobayashi, Sayo; Takeuchi, Yasuto; Hagihara, Hiroaki; Kuwaki, Kenji; Ohnishi, Hideki; Ikeda, Fusao; Miyake, Yasuhiro; Nakamura, Shinichiro; Shiraha, Hidenori; Takaki, Akinobu; Yamamoto, Kazuhide

    2013-10-01

    Des-γ-carboxyprothrombin (DCP) is known to be increased by the use of sorafenib for the treatment of hepatocellular carcinoma (HCC), despite its therapeutic efficacy. In addition to the tumor progression, hypoxia that impairs vitamin K uptake is known to induce DCP and this mechanism may explain DCP elevation by sorafenib. In this study, we tried to evaluate the effect of sorafenib treatment using a new marker, NX-DCP, which is specific to vitamin K absence. Serum DCP and NX-DCP were measured in 50 consecutive HCC patients before and 1 week after starting sorafenib, and compared with the treatment effect using the modified Response Evaluation Criteria in Solid Tumors guidelines. DCP and NX-DCP increased 1.58- (median, range 0.21-28.7) and 1.20-fold (median, range 0.41-14.2) after the administration of sorafenib, respectively. The increases of both markers were less than twofold in approximately half of the patients (low-elevation group). However, 12 patients showed over twofold increase of both DCP and NX-DCP (double-elevation group), and eight patients showed over twofold increase of DCP alone (DCP-elevation group). The disease control rate (DCR) of the DCP-elevation group (12.5%) was significantly lower than those of the double-elevation group (75.0%, P = 0.020) and the low-elevation group (60.0%, P = 0.042). Progression-free survival (PFS) was significantly shorter in the DCP-elevation group than in the double-elevation group (P = 0.006) and the low-elevation group (P = 0.001). NX-DCP in combination with DCP could be a useful biomarker of sorafenib treatment for advanced HCC. © 2012 The Japan Society of Hepatology.

  18. Characterisation and optimisation of PECVD SiNx as an antireflection coating and passivation layer for silicon solar cells

    Directory of Open Access Journals (Sweden)

    Yimao Wan

    2013-03-01

    Full Text Available In this work, we investigate how the film properties of silicon nitride (SiNx depend on its deposition conditions when formed by plasma enhanced chemical vapour deposition (PECVD. The examination is conducted with a Roth & Rau AK400 PECVD reactor, where the varied parameters are deposition temperature, pressure, gas flow ratio, total gas flow, microwave plasma power and radio-frequency bias voltage. The films are evaluated by Fourier transform infrared spectroscopy to determine structural properties, by spectrophotometry to determine optical properties, and by capacitance–voltage and photoconductance measurements to determine electronic properties. After reporting on the dependence of SiNx properties on deposition parameters, we determine the optimized deposition conditions that attain low absorption and low recombination. On the basis of SiNx growth models proposed in the literature and of our experimental results, we discuss how each process parameter affects the deposition rate and chemical bond density. We then focus on the effective surface recombination velocity Seff, which is of primary importance to solar cells. We find that for the SiNx prepared in this work, 1 Seff does not correlate universally with the bulk structural and optical properties such as chemical bond densities and refractive index, and 2 Seff depends primarily on the defect density at the SiNx-Si interface rather than the insulator charge. Finally, employing the optimized deposition condition, we achieve a relatively constant and low Seff,UL on low-resistivity (≤1.1 Ωcm p- and n-type c-Si substrates over a broad range of n = 1.85–4.07. The results of this study demonstrate that the trade-off between optical transmission and surface passivation can be circumvented. Although we focus on photovoltaic applications, this study may be useful for any device for which it is desirable to maximize light transmission and surface passivation.

  19. Relativistic local quantum field theory for m=0 particles; Campos cuanticos locales relativos a particulas de masa no nula

    Energy Technology Data Exchange (ETDEWEB)

    Morales Villasevil, A.

    1965-07-01

    A method is introduced ta deal with relativistic quantum field theory for particles with m=0. Two mappings I and J, giving rise respectively to particle and anti particle states, are defined between a test space and the physical Hilbert space. The intrinsic field operator is then defined as the minimal causal linear combinations of operators belonging to the annihilation-creation algebra associated to the germ and antigerm parts of the element. Local elements are introduced as improper test elements and local field operators are constructed in the same way as the intrinsic ones. Commutation rules are given. (Author) 17 refs.

  20. Prognostic relevance of β-catenin expression in T2-3N0M0 esophageal squamous cell carcinoma

    Institute of Scientific and Technical Information of China (English)

    Dong-Rong; Situ; Tie-Hua; Rong

    2010-01-01

    AIM: To study the expression of β-catenin in esophageal squamous cell carcinoma (ESCC) at stage T2-3N0M0 and its relation with the prognosis of ESCC patients. METHODS: Expression of β-catenin in 227 ESCC speci-mens was detected by immunohistochemistry (IHC). A reproducible semi-quantitative method which takes both staining percentage and intensity into account was applied in IHC scoring, and receiver operating char-acteristic curve analysis was used to select the cut-off score for high or low IHC reactivity...

  1. UGS NX CAM Express在模具加工中的运用

    Institute of Scientific and Technical Information of China (English)

    普涛

    2008-01-01

    UGS NX CAM EXPRESS是UGS公司针对行业的模块化加工软件包,是专门为高级机床提供的高级CAM软件。它独立于CAD软件,不受特定CAD系统的限制,并且拥有关键的行业转换程序,可以在线访问后处理库,有利于加工数据导入,可以解决典型的CNC编程的需求。本文通过针对模具在完整的工作流环境下进行加工过程来介绍NX兴CAM Express的应用。

  2. UGS NX CAM Express V5软件问世

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    2007年7月3日.西门子自动化与驱动集团旗下的PLM软件供应商UGS公司发布了其最新版NX CAM Express V5软件.该软件是UGS Velocity组合里一个功能全面、独立于CAD系统的数控编程应用程序.不仅改善了操作界面.而且为用户提供了预配置的“铣-车”环境、新的工具以及突破性的“自由加工”技术。

  3. Strength analysis of parallel robot components in PLM Siemens NX 8.5 program

    Science.gov (United States)

    Ociepka, P.; Herbus, K.

    2015-11-01

    This article presents a series of numerical analyses in order to identify the states of stress in elements, which arise during the operation of the mechanism. The object of the research was parallel robot, which is the basis for the prototype of a driving simulator. To conduct the dynamic analysis was used the Motion Simulation module and the RecurDyn solver. In this module were created the joints which occur in the mechanism of a parallel robot. Next dynamic analyzes were performed to determine the maximal forces that will applied to the analyzed elements. It was also analyzed the platform motion during the simulation a collision of a car with a wall. In the next step, basing on the results obtained in the dynamic analysis, were performed the strength analyzes in the Advanced Simulation module. For calculation the NX Nastran solver was used.

  4. Column number density expressions through M = 0 and M = 1 point source plumes along any straight path

    Science.gov (United States)

    Woronowicz, Michael

    2016-11-01

    Analytical expressions for column number density (CND) are developed for optical line of sight paths through a variety of steady free molecule point source models including directionally-constrained effusion (Mach number M = 0) and flow from a sonic orifice (M = 1). Sonic orifice solutions are approximate, developed using a fair simulacrum fitted to the free molecule solution. Expressions are also developed for a spherically-symmetric thermal expansion (M = 0). CND solutions are found for the most general paths relative to these sources and briefly explored. It is determined that the maximum CND from a distant location through directed effusion and sonic orifice cases occurs along the path parallel to the source plane that intersects the plume axis. For the effusive case this value is exactly twice the CND found along the ray originating from that point of intersection and extending to infinity along the plume's axis. For sonic plumes this ratio is reduced to about 4/3. For high Mach number cases the maximum CND will be found along the axial centerline path.

  5. Column Number Density Expressions Through M = 0 and M = 1 Point Source Plumes Along Any Straight Path

    Science.gov (United States)

    Woronowicz, Michael S.

    2016-01-01

    Analytical expressions for column number density (CND) are developed for optical line of sight paths through a variety of steady free molecule point source models including directionally-constrained effusion (Mach number M = 0) and flow from a sonic orifice (M 1). Sonic orifice solutions are approximate, developed using a fair simulacrum fitted to the free molecule solution. Expressions are also developed for a spherically-symmetric thermal expansion (M = 0). CND solutions are found for the most general paths relative to these sources and briefly explored. It is determined that the maximum CND from a distant location through directed effusion and sonic orifice cases occurs along the path parallel to the source plane that intersects the plume axis. For the effusive case this value is exactly twice the CND found along the ray originating from that point of intersection and extending to infinity along the plumes axis. For sonic plumes this ratio is reduced to about 43. For high Mach number cases the maximum CND will be found along the axial centerline path.

  6. Physical properties of NxTiO2 prepared by sol-gel route

    Science.gov (United States)

    Brahimi, Razika; Bessekhouad, Yassine; Trari, Mohamed

    2012-09-01

    The compounds NxTiO2(x=0, 0.05, 0.1, 0.2) with the anatase structure have been synthesized by Sol-Gel method using Tri-ethyl Amine as nitrogen source and their optical, electrical and electrochemical properties are investigated. The electrical conductivity and thermoelectric power are measured in the temperature rang 300-600 K. The samples exhibit p-type behavior in contrast to TiO2. The doped-samples exhibit two optical transitions (2.35≤Eh-Vis(eV)≤2.55; 1.97≤El-Vis (eV)≤2.06) directly allowed in the visible region, while only one transition is observed in UV region (EUV∼3.00 eV). Pure TiO2 shows direct band gap transition of 3.17 eV. The results confirm experimentally the calculations of Di. Valentin et al. [42]. The transitions Eh-Vis and El-Vis are attributed respectively to the promotion of electrons from the localized N 2p and π* N-O bond to the conduction band. In all cases, EUV is associated to the forbidden band energy. Though that the conductivity is generally improved by doping process, only N0.05TiO2 and N0.1TiO2 shows an enhanced mobility. The mechanism of conduction takes place by small polaron hopping. The band edge positions of NxTiO2 (x=0, 0.05, 0.1, 0.2) at room temperature is predicted from the obtained physical properties. This study proves experimentally the principal role of nitrogen in doping process and permits the electronic states localization associated with N-impurities in TiO2 anatase.

  7. An automation of design and modelling tasks in NX Siemens environment with original software - generator module

    Science.gov (United States)

    Zbiciak, M.; Grabowik, C.; Janik, W.

    2015-11-01

    Nowadays the design constructional process is almost exclusively aided with CAD/CAE/CAM systems. It is evaluated that nearly 80% of design activities have a routine nature. These design routine tasks are highly susceptible to automation. Design automation is usually made with API tools which allow building original software responsible for adding different engineering activities. In this paper the original software worked out in order to automate engineering tasks at the stage of a product geometrical shape design is presented. The elaborated software works exclusively in NX Siemens CAD/CAM/CAE environment and was prepared in Microsoft Visual Studio with application of the .NET technology and NX SNAP library. The software functionality allows designing and modelling of spur and helicoidal involute gears. Moreover, it is possible to estimate relative manufacturing costs. With the Generator module it is possible to design and model both standard and non-standard gear wheels. The main advantage of the model generated in such a way is its better representation of an involute curve in comparison to those which are drawn in specialized standard CAD systems tools. It comes from fact that usually in CAD systems an involute curve is drawn by 3 points that respond to points located on the addendum circle, the reference diameter of a gear and the base circle respectively. In the Generator module the involute curve is drawn by 11 involute points which are located on and upper the base and the addendum circles therefore 3D gear wheels models are highly accurate. Application of the Generator module makes the modelling process very rapid so that the gear wheel modelling time is reduced to several seconds. During the conducted research the analysis of differences between standard 3 points and 11 points involutes was made. The results and conclusions drawn upon analysis are shown in details.

  8. Saturation effects on Ba 6pnl (l= 0, 2) and 6pnk (|M| = 0, 1) autoionization spectra

    Institute of Scientific and Technical Information of China (English)

    Li Shi-Ben; Dai Chang-Jian

    2007-01-01

    Using a three-step laser saturation excitation technique, the saturation effects on the Ba 6pns (J = 1) and 6pnd (J = 1, 3) autoionization spectra are observed systemically in zero field. These saturation spectra are introduced to determine the high n members of 6pnl (l = 0, 2) autoionizing series and are used to analyse the channel interactions among the autoionizing series in zero field. Furthermore, the saturation excitation technique is applied to the electric field case, in which the saturation spectra of Ba 6pnk (|M|= 0, 1) autoionizing Stark states are measured. Most of these saturation spectra are observed for the first time so far as we know, which indicate the mixing of the autoionizing states in the electric fields.

  9. ARM Cortex M0的油田采输物联网监控系统设计%Design of IoT Monitoring System for Oil Extraction and Transportation Based on ARM Cortex-M0

    Institute of Scientific and Technical Information of China (English)

    于玉珠; 殷春莉

    2014-01-01

    为了提升油田生产的自动化程度,保障安全,降低运行成本,扩大对环境恶劣和偏远地区的自动化覆盖范围,设计一种油田采输物联网监控系统。该系统以基于 ARM Cortex M0的 LPC11C14FBD48为主控芯片,M35为 GPRS 通信模块,用 C++语言开发内核软件和远程集中监控中心软件。可远程对油田采输现场的数据进行采集和系统控制,同时与云计算服务中心实现数据交互,为大数据处理提供基础。该系统实现了油田采输无人值守,覆盖偏远区域,降低了运行成本,提升了油田生产的安全性、可靠性和高效性,使油田生产综合效益明显提高。%In order to raise the automation degree and security in oil field production,reduce the running cost and improve the automated range of poor environment and remote areas,a kind of IoT monitoring control system for oil production is designed.The system takes LPC1 1C14FBD48 based on ARM Cortex-M0 as main control chip and M35 as GPRS communication module.C++ is used to develop kernel software and the software of remote centralized monitoring control center.Remote data acquisition and system control of oil acqui-sition areas are realized,and data interactions with the cloud computing service center are completed so as to provide basic data for big data processing.The system can be applied in poor environment and remote areas.It not only saves the operation cost,but also improves safety,reliability and efficiency,so that it increases obviously comprehensive benefits of oil field production.

  10. Optimization of Al2O3/SiNx stacked antireflection structures for N-type surfacepassivated crystalline silicon solar cells

    Institute of Scientific and Technical Information of China (English)

    Wu Dawei; Jia Rui; Ding Wuchang; Chen Chen; Wu Deqi; Chen Wei; Li Haofeng; Yue Huihui; Liu Xinyu

    2011-01-01

    In the case of N-type solar cells,the anti-reflection property,as one of the important factors to further improve the energy-conversion efficiency,has been optimized using a stacked Al2O3/SiNx layer.The effect of SiNx layer thickness on the surface reflection property was systematically studied in terms of both experimental and theoretical measurement.In the stacked Al2O3/SiNx layers,results demonstrated that the surface reflection property can be effectively optimized by adding a SiNx layer,leading to the improvement in the final photovoltaic characteristic of the N-type solar cells.

  11. (Ⅲ)m=0类二次系统的极限环问题(Ⅲ)%LIMIT CYCLE PROBLEM OF QUADRATIC SYSTEM OF TYPE (Ⅲ)m=0,(Ⅲ)

    Institute of Scientific and Technical Information of China (English)

    M Ali; 罗定军

    2005-01-01

    To continue the discussion in (Ⅰ) and (Ⅱ),and finish the study of the limit cycle problem for quadratic system (Ⅲ)m=0 in this paper.Since there is at most one limit cycle that may be created from critical point O by Hopf bifurcation,the number of limit cycles depends on the different situations of separatrix cycle to be formed around O.If it is a homoclinic cycle passing through saddle S1 on 1+ax-y=0,which has the same stability with the limit cycle created by Hopf bifurcation,then the uniqueness of limit cycles in such cases can be proved.If it is a homoclinic cycle passing through saddle N on x=0,which has the different stability from the limit cycle created by Hopf bifurcation,then it will be a case of two limit cycles.For the case when the separatrix cycle is a heteroclinic cycle passing through two saddles at infinity,the discussion of the paper shows that the number of limit cycles will change from one to two depending on the different values of parameters of system.

  12. Preoperative oxaliplatin, capecitabine, and external beam radiotherapy in patients with newly diagnosed, primary operable, cT3NxMo, low rectal cancer. A phase II study

    Energy Technology Data Exchange (ETDEWEB)

    Oefner, Dietmar [Paracelsus Private Medical Univ., Salzburg (Austria). Dept. of Surgery; Innsbruck Medical Univ. (Austria). Dept. of Visceral, Transplant and Thoracic Surgery; DeVries, Alexander F. [Feldkirch Hospital (Austria). Dept. of Radio-Oncology; Schaberl-Moser, Renate [Medical Univ. Graz (AT). Div. of Oncology] (and others)

    2011-02-15

    Purpose: In patients with locally advanced rectal cancer (LARC), preoperative chemoradiation is known to improve local control, and down-staging of the tumor serves as a surrogate for survival. Intensification of the systemic therapy may lead to higher downstaging rates and, thus, enhance survival. This phase II study investigated the efficacy and safety of preoperative capecitabine and oxaliplatin in combination with radiotherapy. Patients and Methods: Patients with LARC of the mid and lower rectum, T3NxM0 staged by MRI received radiotherapy (total dose 45 Gy) in combination with oral capecitabine (825 mg/m{sup 2} twice a day on radiotherapy days; weeks 1-4) and oxaliplatin 50 mg/m{sup 2} intravenously (days 1, 8, 15, and 22). Efficacy was evaluated as rate of tumor down-categorization at the T level. Results: A total of 59 patients were enrolled (19 women, 40 men; median age of 61 years) and all were evaluable for efficacy and toxicity. Down-categorization at the T level was observed in 53% with pathological complete response in 6 patients (10%). Actual total radiotherapy, oxaliplatin and capecitabine doses received were 97%, 90%, and 93% of the protocol-specified preplanned doses, respectively. Grade 3/4 toxicity was observed in 15 patients (25%). The most frequent was diarrhea (12%). Conclusions: Preoperative chemoradiation with capecitabine and oxaliplatin is feasible in patients with MRI-proven cT3 LARC. The only clinically relevant toxicity was diarrhea. Overall, efficacy of the multimodality treatment was good, but not markedly exceeding that of 5-FU- or capecitabine-based chemoradiation approaches. (orig.)

  13. The serum level of NX-DCP-R, but not DCP, is not increased in alcoholic liver disease without hepatocellular carcinoma.

    Science.gov (United States)

    Saito, Masaya; Yano, Yoshihiko; Hirano, Hirotaka; Momose, Kenji; Mouri, Kentaro; Hishimoto, Akitoyo; Yoshida, Masaru; Azuma, Takeshi

    2016-01-01

    Alcoholic liver disease (ALD) is the most common cause of hepatocellular carcinoma (HCC) worldwide. Des-gamma-carboxy prothrombin (DCP) is elevated in many patients with HCC, but also in severe alcoholics without HCC. We aimed to clarify whether the DCP/NX-DCP ratio (NX-DCP-R) could have a high specificity in ALD patients without HCC. We performed a prospective cohort study on a total of 703 consecutive outpatients of liver diseases including severe alcoholics and healthy volunteers, who underwent blood biochemical examinations at Kobe University Hospital. Serum DCP was measured by electrochemiluminescence immunoassay (ECLIA) using a monoclonal antibody, MU-3. A novel parameter, serum NX-DCP, which represents predominantly DCP caused by reduced vitamin K availability, was also measured by ECLIA using monoclonal antibodies P-16 and P-11. The diagnostic accuracy of DCP and NX-DCP-R in patients with and without excessive alcohol intake was statistically examined. DCP was significantly higher in alcoholics than in non-alcoholics (p= 0.005), whereas the NX-DCP-R did not differ between alcoholics and non-alcoholics (p= 0.375). DCP was significantly increased in the serum of each patient with alcoholic hepatitis and alcoholic cirrhosis (pNX-DCP-R was not increased (p> 0.05). NX-DCP-R, but not DCP, was not increased in alcoholics without HCC. As for negative screening for HCC, the specificity of the NX-DCP-R in alcoholics without HCC was better than that of DCP in alcoholics without HCC, and so could be a useful negative screening tool for HCC in millions of alcoholics worldwide.

  14. Roles of Fe-Nx and Fe-Fe3C@C Species in Fe-N/C Electrocatalysts for Oxygen Reduction Reaction.

    Science.gov (United States)

    Kim, Jae Hyung; Sa, Young Jin; Jeong, Hu Young; Joo, Sang Hoon

    2017-03-22

    Iron and nitrogen codoped carbons (Fe-N/C) have emerged as promising nonprecious metal catalysts for the oxygen reduction reaction (ORR). While Fe-Nx sites have been widely considered as active species for Fe-N/C catalysts, very recently, iron and/or iron carbide encased with carbon shells (Fe-Fe3C@C) has been suggested as a new active site for the ORR. However, most of synthetic routes to Fe-N/C catalysts involve high-temperature pyrolysis, which unavoidably yield both Fe-Nx and Fe-Fe3C@C species, hampering the identification of exclusive role of each species. Herein, in order to establish the respective roles of Fe-Nx and Fe-Fe3C@C sites we rationally designed model catalysts via the phase conversion reactions of Fe3O4 nanoparticles supported on carbon nanotubes. The resulting catalysts selectively contained Fe-Nx, Fe-Fe3C@C, and N-doped carbon (C-Nx) sites. It was revealed that Fe-Nx sites dominantly catalyze ORR via 4-electron (4 e(-)) pathway, exerting a major role for high ORR activity, whereas Fe-Fe3C@C sites mainly promote 2 e(-) reduction of oxygen followed by 2 e(-) peroxide reduction, playing an auxiliary role.

  15. High-pressure synthesis and crystal structures of beta- M NX (M = Zr, Hf; X = Cl, Br, I)

    CERN Document Server

    Chen, X; Yamanaka, S

    2002-01-01

    The single crystals of six kinds of metal nitride halide, beta- M NX (M = Zr, Hf; X = Cl, Br, I), were grown in sealed Au (or Pt) tubes by the reaction of M N or M NX powders with NH sub 4 X as fluxes under high-temperature and high-pressure conditions such as 3-5 GPa at 900-1200 sup o C. The x-ray structure analysis revealed that all six kinds of compound crystallize in a rhombohedral space group R3-bar m, Z = 6. beta-ZrNCl, beta-ZrNBr, and beta-HfNCl are isotypic with SmSI, and the others isostructural with YOF.

  16. Characterization of a-SiNx:H layer. Bulk properties, interface with Si and solar cell efficiency

    Energy Technology Data Exchange (ETDEWEB)

    Lamers, M.; Weeber, A. [ECN Solar Energy, P.O. Box 1, 1755 ZG Petten (Netherlands); Butler, K.; Harding, J. [University of Sheffield, Western Bank, Sheffield S10 2TN (United Kingdom); Vullum, P.E. [SINTEF, Box 4760 Sluppen, 7465 Trondheim (Norway)

    2013-04-15

    In this paper two front-side a-SiNx:H layers that can be used in the solar cell industry are extensively characterized and related to solar cell efficiency. Variations in layer build up, atomic density, optical properties, bulk passivation and surface passivation are discussed. The build up of these two layers are considered against a background of over 80 SiNx:H layers. These layers differ in stoichiometry, atomic content, optical properties and surface passivation, as the refractive index is varied between 1.8 and 3.0. Additionally, comparable data output of different characterization equipment is discussed on validity. On solar cells, the effect of different layer build up is investigated and it is found that a wide process window is allowed for similar cell efficiencies regarding the optical transmission, bulk and surface passivation.

  17. Hybrid Non-Isolated and Non Inverting Nx Interleaved DC-DC Multilevel Boost Converter for Renewable Energy Applications

    DEFF Research Database (Denmark)

    Bhaskar, Mahajan Sagar; Kulkarni, Rishi M.; Padmanaban, Sanjeevi Kumar;

    2016-01-01

    In this paper hybrid non isolated/ non inverting Nx interleaved DC-DC multilevel Boost Converter for renewable energy applications is presented. The presented hybrid topology is derived from the conventional interleaved converter and the Nx Multilevel boost converter. In renewable energy...... applications, generated energy cannot be directly used at application end. In most of the cases it needs to be stepped up with DC-DC converter at operating voltage levels as per the requirement of the application. Though conventional boost converter can theoretically be used for this purpose, but obtaining....... The advantages of presenting topology of DC-DC converter are high voltage conversion, reduce ripple, low voltage stress, non inverting without utilizing the high duty and transformer. The main advantage of presented topology is more number of levels can be increased by adding capacitor and diode circuitry...

  18. Izdelava kinematičnega modela in poprocesorja dvoosne stružnice v okolju Siemens NX

    OpenAIRE

    Kešpret, Sandi

    2014-01-01

    Magistrsko delo v prvem delu obravnava teoretične splošne osnove simulacij CNC strojev – stružnic. V nadaljevanju so obravnavane simulacije v programskem paketu Siemens NX. Jedro magistrske naloge zavzema podroben opis izdelave simulacije stroja CNC stružnice GF – NDM 16 ter poprocesorja. V zaključku sledijo komentar, analiza in primerjava dobljenih rezultatov z rezultati, dobljenimi s sorodnim programskim paketom.

  19. Direct Observation of NN Pairs Transfer in GaP1-xNx (x = 0.12%)

    Institute of Scientific and Technical Information of China (English)

    LU Yi-Jun; GAO Yu-Lin; ZHENG Jian-Sheng; ZHANG Yong; MASCARENHAS A.; XIN H.P.; TU C.W.

    2005-01-01

    @@ Time-resolved photoluminescence (TRPL) was applied to investigate the transient process in GaP1-xNx (x=0.12%) alloy. The filling, transferring and decay processes among nitrogen pairs are directly observed. The NN4pair, either not present or only a small obscure peak under a proper excitation condition in the steady-state photoluminescence spectrum, is well resolved by TRPL.

  20. Prognostic Value of the Number of Retrieved Lymph Nodes in Pathological Nx or N0 Classical Papillary Thyroid Carcinoma.

    Science.gov (United States)

    Sung, Tae-Yon; Yoon, Jong Ho; Song, Dong Eun; Lee, Yu-Mi; Kim, Tae-Yong; Chung, Ki-Wook; Kim, Won Bae; Shong, Young Kee; Hong, Suck Joon

    2016-08-01

    This study evaluated the clinical implications of the number of retrieved central lymph nodes (LN) for the recurrence and recurrence-free survival (RFS) outcomes in patients with pathological Nx (pNx) or N0 classical papillary thyroid carcinoma (PTC). In total, 464 patients were enrolled following total thyroidectomy with central LN dissection. The risk factors related to recurrence and RFS were evaluated and compared between these groups. Age, primary tumor size, and number of retrieved central LNs were independent risk factors for recurrence according to multivariate analysis (p < 0.05). The cut-off value for the number of retrieved central LNs related to recurrence was 4.5. Group 2 (pN0; ≥5 nodes) demonstrated a significantly higher proportion of patients with an ablation-stimulated thyroglobulin (sTg) level <2.0 ng/mL (84.9 vs 61.1 %; p < 0.050) and control sTg level <1.0 ng/mL (92.1 vs 79.6 %; p < 0.050) in comparison with patients in group 1 (pNx or pN0; 1-4 nodes). Perioperative complication rates were comparable between groups. The number of retrieved central LNs is an independent risk factor for recurrence, even among patients with pNx or pN0 classical PTC. A thorough central LN dissection may therefore improve the long-term RFS rate.

  1. Ionization energies of niobium carbide clusters Nb(n)C(m) (n = 3-10, m = 0-7).

    Science.gov (United States)

    Fukushima, Naoya; Miyajima, Ken; Mafuné, Fumitaka

    2009-03-19

    We prepared niobium carbide clusters, Nb(n)C(m), in the gas phase by a double laser ablation technique. A photoionization efficiency was measured as a function of the wavelength of an ionization laser to determine ionization energies (E(i)'s) of Nb(n)C(m) (n = 3-10, m = 0-7). The E(i)'s of Nb(4)C(4) and Nb(5)C(3) are found to be the lowest in the clusters studied. When the experimental E(i)'s are compared with the E(i)'s estimated by the density functional calculation previously reported (Harris, H.; Dance, I. J. Phys. Chem. A 2001, 105, 3340-3358), we determined Nb(5)C(3) to have a similar 2 x 2 x 2 cubic structure as Nb(4)C(4). We also found that the E(i)'s of carbon-rich clusters, Nb(n)C(m) (n 5 eV) than the E(i)'s of the niobium-rich clusters. The high E(i)'s are due to the structure of the carbon-rich clusters: carbon-carbon bonding is preferred when the number of carbon atoms exceeds the number of metal atoms. The structure was also discussed in relation to the reactivity of cluster ions with a hydrogen molecule.

  2. A method of computer aided design with self-generative models in NX Siemens environment

    Science.gov (United States)

    Grabowik, C.; Kalinowski, K.; Kempa, W.; Paprocka, I.

    2015-11-01

    Currently in CAD/CAE/CAM systems it is possible to create 3D design virtual models which are able to capture certain amount of knowledge. These models are especially useful in an automation of routine design tasks. These models are known as self-generative or auto generative and they can behave in an intelligent way. The main difference between the auto generative and fully parametric models consists in the auto generative models ability to self-organizing. In this case design model self-organizing means that aside from the possibility of making of automatic changes of model quantitative features these models possess knowledge how these changes should be made. Moreover they are able to change quality features according to specific knowledge. In spite of undoubted good points of self-generative models they are not so often used in design constructional process which is mainly caused by usually great complexity of these models. This complexity makes the process of self-generative time and labour consuming. It also needs a quite great investment outlays. The creation process of self-generative model consists of the three stages it is knowledge and information acquisition, model type selection and model implementation. In this paper methods of the computer aided design with self-generative models in NX Siemens CAD/CAE/CAM software are presented. There are the five methods of self-generative models preparation in NX with: parametric relations model, part families, GRIP language application, knowledge fusion and OPEN API mechanism. In the paper examples of each type of the self-generative model are presented. These methods make the constructional design process much faster. It is suggested to prepare this kind of self-generative models when there is a need of design variants creation. The conducted research on assessing the usefulness of elaborated models showed that they are highly recommended in case of routine tasks automation. But it is still difficult to distinguish

  3. The VIMOS Public Extragalactic Redshift Survey (VIPERS). Ωm0 from the galaxy clustering ratio measured at z ~ 1

    Science.gov (United States)

    Bel, J.; Marinoni, C.; Granett, B. R.; Guzzo, L.; Peacock, J. A.; Branchini, E.; Cucciati, O.; de la Torre, S.; Iovino, A.; Percival, W. J.; Steigerwald, H.; Abbas, U.; Adami, C.; Arnouts, S.; Bolzonella, M.; Bottini, D.; Cappi, A.; Coupon, J.; Davidzon, I.; De Lucia, G.; Fritz, A.; Franzetti, P.; Fumana, M.; Garilli, B.; Ilbert, O.; Krywult, J.; Le Brun, V.; Le Fèvre, O.; Maccagni, D.; Małek, K.; Marulli, F.; McCracken, H. J.; Paioro, L.; Polletta, M.; Pollo, A.; Schlagenhaufer, H.; Scodeggio, M.; Tasca, L. A. M.; Tojeiro, R.; Vergani, D.; Zanichelli, A.; Burden, A.; Di Porto, C.; Marchetti, A.; Mellier, Y.; Moscardini, L.; Nichol, R. C.; Phleps, S.; Wolk, M.; Zamorani, G.

    2014-03-01

    We use a sample of about 22 000 galaxies at 0.65 Public Extragalactic Redshift Survey (VIPERS) Public Data Release 1 (PDR-1) catalogue, to constrain the cosmological model through a measurement of the galaxy clustering ratio ηg,R. This statistic has favourable properties, which is defined as the ratio of two quantities characterizing the smoothed density field in spheres of a given radius R: the value of its correlation function on a multiple of this scale, ξ(nR), and its variance σ2(R). For sufficiently large values of R, this is a universal number, which captures 2-point clustering information independently of the linear bias and linear redshift-space distortions of the specific galaxy tracers. In this paper, we discuss how to extend the application of ηg,R to quasi-linear scales and how to control and remove observational selection effects, which are typical of redshift surveys as VIPERS, in detail. We verify the accuracy and efficiency of these procedures using mock catalogues that match the survey selection process. These results show the robustness of ηg,R to non-linearities and observational effects, which is related to its very definition as a ratio of quantities that are similarly affected. At an effective redshift z = 0.93, we measured the value ηg,R(15) = 0.141 ± 0.013 at R = 5h-1 Mpc. Within a flat ΛCDM cosmology and by including the best available priors on H0, ns and baryon density, we obtain a matter density parameter at the current epoch Ωm,0 = 0.270-0.025+0.029. In addition to the great precision achieved on our estimation of Ωm using VIPERS PDR-1, this result is remarkable because it appears to be in good agreement with a recent estimate at z ≃ 0.3, which was obtained by applying the same technique to the SDSS-LRG catalogue. It, therefore, supports the robustness of the present analysis. Moreover, the combination of these two measurements at z ~ 0.3 and z ~ 0.9 provides us with a very precise estimate of Ωm,0 = 0.274 ± 0.017, which

  4. Stress-induced magnetization in Pr2Fe17Nx compounds

    Science.gov (United States)

    Persiano, A. I. C.; Ardisson, J. D.; Batista, F. A.; Colucci, C. C.; Gama, S.

    1994-09-01

    The dependence on x of the phases present in Pr2Fe17Nx powder particles nitrided at 400°C is studied by means of Mössbauer spectroscopy. The results are compared with thermomagnetic analysis data and confirm the formation of a nitrogen-saturated core, as discussed in the literature, which is attributed to the diffusion of nitrogen through extended defects. The occurrence of three distinct Mössbauer subspectra is associated with the presence of the nitrogen-saturated phase with x = (2.8 ± 0.2), the original binary phase and a volume fraction of the Pr 2Fe 17 phase which becomes magnetic at room temperature due to the lattice expansion provoked by a stress-strain field within the particles. A model for the partially nitrided particles is employed successfully to account for the changes in the subspectral areas as well as the approach to saturation observed in the average hyperfine field of samples with nitrogen contents as low as x = 1.5; it also produces a preliminary value for the Poisson ratio (μ = 0.2) of the Pr 2Fe 17 phase.

  5. Contribution of glycerol on production of poly(gamma-Glutamic Acid) in Bacillus subtilis NX-2.

    Science.gov (United States)

    Wu, Qun; Xu, Hong; Liang, Jinfeng; Yao, Jun

    2010-01-01

    Glycerol would stimulate the production of poly(gamma-glutamic acid) (gamma-PGA) and decrease its molecular weight in Bacillus subtilis NX-2. When 20 g/l glycerol was added in the medium, the yield of gamma-PGA increased from 26.7 +/- 1.0 to 31.7 +/- 1.3 g/l, and molecular weight of gamma-PGA decreased from 2.43 +/- 0.07 x 10(6) to 1.86 +/- 0.06 x 10(6) Da. In addition, it was found that the decrease of gamma-PGA chain length by glycerol would lead to the decrease of broth viscosity during the fermentation and enhanced the uptake of substrates, which could not only improve cell growth but also stimulate gamma-PGA production. Moreover, it was also found that glycerol could effectively regulate molecular weight between 2.43 +/- 0.07 x 10(6) and 1.42 +/- 0.05 x 10(6) Da with the concentration ranging from 0 to 60 g/l. This was the first time to discover such contribution of glycerol on gamma-PGA production in Bacillus genus. And the effects of glycerol on molecular weight of gamma-PGA would be developed to be an approach for the regulation of microbial gamma-PGA chain length, which is of practical importance for future commercial development of this polymer.

  6. Cloning and characterization of a sucrose isomerase from Erwinia rhapontici NX-5 for isomaltulose hyperproduction.

    Science.gov (United States)

    Li, Sha; Cai, Heng; Qing, Yujia; Ren, Ben; Xu, Hong; Zhu, Hongyang; Yao, Jun

    2011-01-01

    The sucrose isomerase (SIase) gene from an efficient strain of Erwinia rhapontici NX-5 for isomaltulose hyperproduction was cloned and overexpressed in Escherichia coli. Protein sequence alignment revealed that SIase was a member of the glycoside hydrolase 13 family. The molecular mass of the purified recombinant protein was estimated at 66 kDa by SDS-PAGE. The SIase had an optimal pH and temperature of 5.0 and 30 °C, respectively, with a K (m) of 257 mmol/l and V (max) of 48.09 μmol/l/s for sucrose. To the best of our knowledge, the recombinant SIase has the most acidic optimum pH for isomaltulose synthesis. When the recombinant E. coli (pET22b- palI) cells were used for isomaltulose synthesis, almost complete conversion of sucrose (550 g/l solution) to isomaltulose was achieved in 1.5 h with high isomaltulose yields (87%). The immobilized E. coli cells remained stable for more than 30 days in a "batch"-type enzyme reactor. This indicated that the recombinant SIase could continuously and efficiently produce isomaltulose.

  7. Purification and characterization of a highly selective sucrose isomerase from Erwinia rhapontici NX-5.

    Science.gov (United States)

    Ren, Ben; Li, Sha; Xu, Hong; Feng, Xiao-Hai; Cai, Heng; Ye, Qi

    2011-06-01

    A highly selective sucrose isomerase (SIase) was purified to homogeneity from the cell-free extract of Erwinia rhapontici NX-5 with a recovery of 27.7% and a fold purification of 213.6. The purified SIase showed a high specific activity of 427.1 U mg(-1) with molecular weight of 65.6 kDa. The K (m) for sucrose was 222 mM while V (max) was 546 U mg(-1). The optimum pH and temperature for SIase activity were 6.0 and 30 °C, respectively. The purified SIase was stable in the temperature range of 10-40 °C and retained 65% of the enzyme activity after 2 weeks' storage at 30 °C. The SIase activity was enhanced by Mg(2+) and Mn(2+), inhibited by Ca(2+), Cu(2+), Zn(2+), and Co(2+), completely inhibited by Hg(2+) and Ag(2+). The purified SIase was strongly inhibited by SDS, while partially inhibited by dimethylformamide, tetrahydrofuran, and PMSF. Additionally, glucose and fructose acted as competitive inhibitors for purified SIase.

  8. Utilization of N-X bonds in the synthesis of N-heterocycles.

    Science.gov (United States)

    Minakata, Satoshi

    2009-08-18

    Nitrogen-containing heterocycles--such as aziridines, pyrrolidines, piperidines, and oxazolines--frequently show up as substructures in natural products. In addition, some of these species show potent biological activities. Therefore, researchers would like to develop practical and convenient methods for constructing these heterocycles. Among the available methods, the transfer of N(1) units to organic molecules, especially olefins, is a versatile method for the synthesis of N-heterocycles. This Account reviews some of our recent work on the synthesis of N-heterocycles using the N-X bond. A nitrogen-halogen bond bearing an electron-withdrawing group on the nitrogen can be converted to a halonium ion. In the presence of C-C double bonds, these species produce three-membered cyclic halonium intermediates, which can be strong electrophiles and can produce stereocontrolled products. N-Halosuccinimides are representative sources of halonium ions, and the nitrogen of succinimide is rarely used in organic synthesis. If the nitrogen could act as a nucleophile, after releasing halonium ions to C-C double bonds, we expect great advances would be possible in the stereoselective functionalization of olefins. We chose N-chloro-N-sodio-p-toluenesulfonamide (chloramine-T, CT), an inexpensive and commercially available reagent, as our desired reactant. In the presence of a catalytic amount of CuCl or I(2) and AgNO(3), we achieved the direct aziridination of olefins with CT. The reaction catalyzed by I(2) could be carried out in water or silica-water as a green process. The reaction of iodoolefins with CT gave pyrrolidine derivatives under extremely mild conditions with complete stereoselectivity. We also extended the utility of the N-chloro-N-metallo reagent, which is often unstable and difficult to work with. Although CT does not react with electron-deficient olefins without a metal catalyst or an additive, we found that N-chloro-N-sodiocarbamates react with electron

  9. Various Recipes of SiNx Passivated AlGaN/GaN High Electron Mobility Transistors in Correlation with Current Slump

    Institute of Scientific and Technical Information of China (English)

    YANG Ling; HAO Yue; MA Xiao-Hua; QUAN Si; HU Gui-Zhou; JIANG Shou-Gao; YANG Li-Yuan

    2009-01-01

    The current slump of different recipes of SiNx passivated AlGaN/GaN high electron mobility transistors (HEMTs) is investigated. The dc and pulsed current-voltage curves of AlGaN/GaN HEMTs using different recipes are analyzed. It is found that passivation leakage has a strong relationship with NH3 flow in the plasma-enhanced chemical vapor phase deposition process, which has impacted on the current collapse of SiNx passivated devices. We analyze the pulsed IDS-VDS characteristics of different recipes of SiNx passivation devices for different combinations of gate and drain quiescent biases (V_(GSO), V_(DSO)) of(0, 0), (-6, 0), (-6, 15) and (0, 15) V. The possible mechanisms are the traps in SiNx passivation capturing the electrons and the surface states at the SiNx/AlGaNinterface, which can affect the channel of two-dimensional electron gas and cause the current collapse.

  10. IBM Intellistation M PRO 9229图形工作站运行测试:UG NX 4

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ 强大的UG NX 4系统 属于德国西门子公司旗下的Unigraphics Solutions公司(简称UGS)是全球著名的MCAD供应商,主要为汽车与交通、航空航天、日用消费品、通用机械及电子工业等领域提供多级化的、集成的、企业级的包括软件产品与服务在内的完整的MCAD解决方案.

  11. 基于FEMAP WITH NX NASTRAN的货舱结构有限元分析实例

    Institute of Scientific and Technical Information of China (English)

    万冬冬

    2008-01-01

    本文通过58,000吨散货船5号货舱有限元计算实例,介绍了利用Femap with NX Nastran进行货舱整舱段有限元计算的基本过程。这里主要侧重于模型的建立过程和计算,对于计算结果的后处理可以根据不同的规范要求分别进行。

  12. A (Nd, Zr(Fe, Co11.5Ti0.5Nx compound as a permanent magnet material

    Directory of Open Access Journals (Sweden)

    S. Suzuki

    2014-11-01

    Full Text Available We studied NdFe11TiNx compounds as permanent magnet materials. The (Nd0.7,Zr0.3(Fe0.75Co0.2511.5Ti0.5N0.52 powder that contained a limited amount of the α-(Fe, Co phase shows fairly good magnetic properties, such as a saturation polarization (Js of 1.68 T and an anisotropic field (Ha of 2.88 (Law of approach to saturation – 4.0 MA/m (Intersection of magnetization curves. Both properties are comparable to those of the Nd2Fe14B phase.

  13. Butterfly-shaped distribution of SiNx precipitates in multi-crystalline Si for solar cells

    Science.gov (United States)

    Li, Jianyong; Prakash, Ronit Roneel; Jiptner, Karolin; Chen, Jun; Miyamura, Yoshiji; Harada, Hirofumi; Kakimoto, Koichi; Ogura, Atsushi; Sekiguchi, Takashi

    2013-08-01

    This paper concerns the precipitation mechanism of SiNx impurities in multi-crystalline silicon grown with a directional solidification system. A butterfly-shaped precipitate region was found across the middle part of ingot. These precipitates showed filament-like and fiber-like shapes of several micrometers in diameter and up to several millimeters in length. These two types of precipitates exist in different areas, forming three distribution zones in the butterfly region. The precipitate growth periodically stopped at the last stage of the butterfly formation. A non-uniform convection flow model was proposed to explain the precipitation behavior at the butterfly.

  14. Low-noise on-chip frequency conversion by four-wave-mixing Bragg scattering in SiNx waveguides

    CERN Document Server

    Agha, Imad; Thurston, Bryce; Srinivasan, Kartik

    2012-01-01

    Low-noise, tunable wavelength-conversion through non-degenerate four-wave mixing Bragg scattering in SiNx waveguides is experimentally demonstrated. Finite element method simulations of waveguide dispersion are used with the split-step Fourier method to predict device performance, and indicate a strong dependence of the conversion efficiency on phase matching, which is controlled by the waveguide geometry. Two 1550 nm wavelength band pulsed pumps are used to achieve tunable conversion of a 980 nm signal over a range of 5 nm with a peak conversion efficiency of \\approx 5 %. The demonstrated Bragg scattering process is suitable for frequency conversion of quantum states of light.

  15. Influence of Preparation Conditions on the Catalytic Performance of MoNx/SBA-15 for Ammonia Decomposition

    Institute of Scientific and Technical Information of China (English)

    Hongchao Liu; Hua Wang; Jianghan Shen; Ying Sun; Zhongmin Liu

    2006-01-01

    The influence of preparation conditions (e.g. H2-N2 ratios, final nitriding temperatures) on the performance of MoNx/SBA-15 catalysts for ammonia decomposition was investigated. The variation of catalytic activity with H2-N2 ratios may be attributed to the variation of surface compositions and particle sizes of the active components. The variation of nitriding temperatures leads to the formation of molybdenum nitride domains of varying compositions, which are responsible for the difference in their catalytic performance with respect to ammonia decomposition. At 923 K, ammonia could be completely decomof ammonia.

  16. One-pot Reductive Amination of carbonyl Compounds with Nitro Compounds by Transfer Hydrogenation over Co-Nx as catalyst.

    Science.gov (United States)

    Zhou, Peng; Zhang, Zehui

    2017-05-09

    A new method was developed for the synthesis of secondary amines through the one-pot reductive amination of carbonyl compounds with nitro compounds using formic acid as the hydrogen donor over a heterogeneous non-noble-metal catalyst (Co-Nx /C-800-AT, generated by the pyrolysis of the cobalt phthalocyanine/silica composite at 800°C under a N2 atmosphere and subsequent etching by HF). Both nitrogen and cobalt were of considerable importance in the transfer hydrogenation reactions with formic acid. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  17. Efficient visible light-induced degradation of rhodamine B by W(NxS1−x)2 nanoflowers

    Science.gov (United States)

    Liu, Peitao; Zhang, Jingyan; Gao, Daqiang; Ye, Weichun

    2017-01-01

    Here, W(NxS1−x)2 nanoflowers were fabricated by simple sintering process. Photocatalytic activity results indicated our fabricated N-doped WS2 nanoflowers shown outstanding photoactivity of degradating of rhodamine B with visible light. Which is attributed to the high separation efficiency of photoinduced electron–hole pairs, the broadening of the valence band (VB), and the narrowing of energy band gap. Meanwhile, our work provided a novel method to induce surface sulfur vacancies in crystals by introduing impurities atoms for enhancing their photodegradation. PMID:28106096

  18. SiNx coatings deposited by reactive high power impulse magnetron sputtering: Process parameters influencing the residual coating stress

    Science.gov (United States)

    Schmidt, S.; Hänninen, T.; Wissting, J.; Hultman, L.; Goebbels, N.; Santana, A.; Tobler, M.; Högberg, H.

    2017-05-01

    The residual coating stress and its control is of key importance for the performance and reliability of silicon nitride (SiNx) coatings for biomedical applications. This study explores the most important deposition process parameters to tailor the residual coating stress and hence improve the adhesion of SiNx coatings deposited by reactive high power impulse magnetron sputtering (rHiPIMS). Reactive sputter deposition and plasma characterization were conducted in an industrial deposition chamber equipped with pure Si targets in N2/Ar ambient. Reactive HiPIMS processes using N2-to-Ar flow ratios of 0 and 0.28-0.3 were studied with time averaged positive ion mass spectrometry. The coatings were deposited to thicknesses of 2 μm on Si(001) and to 5 μm on polished CoCrMo disks. The residual stress of the X-ray amorphous coatings was determined from the curvature of the Si substrates as obtained by X-ray diffraction. The coatings were further characterized by X-ray photoelectron spectroscopy, scanning electron microscopy, and nanoindentation in order to study their elemental composition, morphology, and hardness, respectively. The adhesion of the 5 μm thick coatings deposited on CoCrMo disks was assessed using the Rockwell C test. The deposition of SiNx coatings by rHiPIMS using N2-to-Ar flow ratios of 0.28 yield dense and hard SiNx coatings with Si/N ratios <1. The compressive residual stress of up to 2.1 GPa can be reduced to 0.2 GPa using a comparatively high deposition pressure of 600 mPa, substrate temperatures below 200 °C, low pulse energies of <2.5 Ws, and moderate negative bias voltages of up to 100 V. These process parameters resulted in excellent coating adhesion (ISO 0, HF1) and a low surface roughness of 14 nm for coatings deposited on CoCrMo.

  19. 基于NX的汽车标准件库的研究与实现%Research and Realization of Automotive Standard-part Library based on NX

    Institute of Scientific and Technical Information of China (English)

    陈诚

    2012-01-01

      Building the common parts library based on the CAD platform is very helpful to improving the efficiency and quality of the product design. The method of modeling based on NX NX2.0 platform is introduced. And the method and pro-cedure of developing automobile standard parts library with the secondary development are detailed.%  基于CAD平台建立常用的零部件库,有助于提高产品的设计效率和质量.文章介绍了零件模板的创建过程,详细说明了以NX2.0为平台,利用二次开发技术开发汽车标准件库的方法和步骤.

  20. Optimization of Fermentation Conditions for Bacteriocin Production by Lactobacillus acidophilus NX2-6%嗜酸乳杆菌NX2-6产细菌素的发酵条件优化

    Institute of Scientific and Technical Information of China (English)

    乌云达来; 陆兆新; 吕凤霞; 别小妹; 卢亚萍; 孙会刚; 查干其劳

    2012-01-01

    Three culture medium components including glucose,sodium acetate and sodium citrate and fermentation time were identified as key factors that affect bacteriocin production by Lactobacillus acidophilus NX2-6 using a Plackett-Burman design and their optimal levels were investigated using response surface methodology based on a Box-Behnken experimental desiign.The optimal levels of glucose,sodium acetate and sodium citrate concentrations and fermentation time were determined to be 60.0 g/L,8.0 g/L,5.0 g/L and 36 h,respectively based on the established quadratic polynormial regression equation for inhibition zone diameter of fermentaton broth.Under these conditions,the predicted inhibition zone diameter of fermentaton broth was 0.9918.The optimized culture medium resulted in an increase of approximately 80.0% in the antibacterial activity of fermentation broth compared to the basic culture medium.Therefore,response surface methodology can provide an economic,effective and reasonal strategy for the optimization of fermentation conditions for bacteriocin production by Lactobacillus acidophilus NX2-6.%在Plackett-Burman试验结果基础上,采用响应曲面法(Box-Behnken设计)对嗜酸乳杆菌NX2-6发酵产细菌素的关键影响因素,即葡萄糖质量浓度、乙酸钠质量浓度、柠檬酸三钠水合物质量浓度及培养时间的最佳水平范围进行研究和探讨。通过对发酵液抑菌圈直径的二次多项回归方程求解得知,在葡萄糖质量浓度、乙酸钠质量浓度、柠檬酸三钠水合物质量浓度和培养时间分别为60.0、8.0、5.0g/L和36h时,菌株NX2-6的发酵液抑菌圈直径预测值为21.37mm,验证实验抑菌圈直径实测值与预测值的相关系数R2为0.9918。优化后培养基与基础培养基相比,发酵液抗菌活性增加约80.0%,由此可见,利用响应曲面法对嗜酸乳杆菌NX2-6发酵产细菌素条件进行优化是经济有效且科学合理的。

  1. 数字化产品开发为创新注入动力--NX 4新功能介绍

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ 一、NX 4概述 NX 4的集成自动化,使数字化产品的开发效率更高.而所有开发学科(工业设计、设计、模拟、刀具制作、机加工和管理)都增加了新功能.一个综合性的产品生命周期管理(PLM)解决方案,含有最先进的计算机辅助设计、工程和制造(CAD/CAE/CAM)技术.

  2. WNx and MoNx Layers: Elastic Properties and Crystal Structure

    Science.gov (United States)

    Ozsdolay, Brian

    This thesis research has focused on the thin film growth, phase stability, and elastic properties of two relatively unknown nitrides: tungsten nitride and molybdenum nitride. The elastic properties and hardness are not well characterized for either material, with previous measurements showing a wide range of values. In addition, the conditions leading to growth of high quality epitaxial layers of these materials are not well known. There is also some discrepancy over the cubic crystal structure seen in both WNx and MoNx. While the presence of nitrogen vacancies are well documented, it is unclear if metal vacancies also appear and in what concentrations. Tungsten nitride layers, 1.45-microm-thick, were deposited by reactive magnetron sputtering on MgO(001), MgO(111), and Al2O3(0001) in 20 mTorr N2 at 500-800 °C. All layers deposited at Ts = 500-700 °C form a cubic phase, as determined by X-ray diffraction o-2theta scans, and show an N-to-W ratio x that decreases from x = 1.21 to 0.83 with increasing Ts = 500-700 °C, as measured by energy dispersive and photoelectron spectroscopies. Ts = 500 and 600 °C yields polycrystalline predominantly 111 oriented beta-WN on all substrates. In contrast, deposition at 700 °C results in epitaxial growth of beta-WN(111) and beta-WN(001) on MgO(111) and MgO(001), respectively, and a 111-preferred orientation on Al2O3(0001). Ts = 800 °C causes nitrogen loss and WN x layers with primarily BCC W grains and x = 0.04-0.06. For Ts = 700 °C, nanoindentation provides hardness values of 9.8+/-2.2, 12.5+/-1.0, and 10.3+/-0.4 GPa, and elastic moduli of 240+/-40, 257+/-13, and 242+/-10 GPa for layers grown on MgO(001), MgO(111), and Al2O3(0001), respectively. Brillouin spectroscopy measurements yield shear moduli of 120+/-2 GPa, 114+/-2 GPa and 108+/-2 GPa for WN on MgO(001), MgO(111) and Al2O3(0001), respectively, suggesting a WN elastic anisotropy factor of 1.6+/-0.3, consistent with the indentation results. The combined analysis of the

  3. Application of UG NX in forging die manufacturing%UGNX在锻模加工中的应用

    Institute of Scientific and Technical Information of China (English)

    孙劲松

    2012-01-01

    以汽车曲轴锻造的模具加工为例,选用UG NX CAM软件进行NC编程,利用UG的CAD和CAM集成,提高工作效率.对于锻模的难加工材料,可以选用TiAlN等涂层的刀具,尽量使用大直径的刀具以提高刚性.粗加工工艺可以采用摆线加工,以获得高加工效率和长刀具寿命.精加工先选用较大的刀具加工,再用小的刀具局部清根.%Taking crankshaft mould machining for example, working efficiency was improved by NC programming using UG NX CAM software and UG CAD/CAM integration. For the forging mould materials which are hard to machine, coating tools such as TiAlN were choosem, tools with as large as possible diameter were used to improve rigidity. Tro-choidal machining was used for rough machining process to get high efficiency and long life of tools. Finish machining process includes machining with larger tools first and flow cut with smaller tools.

  4. The simultaneous production of sphingan Ss and poly(R-3-hydroxybutyrate) in Sphingomonas sanxanigenens NX02.

    Science.gov (United States)

    Wu, Mengmeng; Li, Guoqiang; Huang, Haidong; Chen, Sibin; Luo, Ying; Zhang, Wenwen; Li, Keran; Zhou, Jiefang; Ma, Ting

    2016-01-01

    Sphingans and poly(R-3-hydroxybutyrate) (PHB) are both widely used biopolymers produced by bacteria. In the batch fermentation of Sphingomonas sanxanigenens NX02 in a 5L fermenter using glucose as carbon source, ivory colored sphingan Ss production was a growth-associated process with a maximum purified production of 14.88 ± 0.83 g/L, while 6.08 ± 0.23 g/L PHB was simultaneously produced. Sphingan Ss and PHB were separated by a simple dilution, heating and centrifugation or filtration process, and sphingan Ss can be cost-effectively extracted using a small amount of acid rather than multi-fold volumes of alcohols. From ultrathin sections of S. sanxanigenens NX02, we found that the interior space of the cells was filled with PHB granules, and the outside was surrounded by abundant Ss. The purified sphingan Ss can be used as an excellent gelling and emulsifying agent in biotechnology applications such as food, personal care and production processes. Proposed pathways of Ss and PHB biosynthesis from glucose are also presented.

  5. Probing the role of an atomically thin SiNx interlayer on the structure of ultrathin carbon films.

    Science.gov (United States)

    Dwivedi, Neeraj; Rismani-Yazdi, Ehsan; Yeo, Reuben J; Goohpattader, Partho S; Satyanarayana, Nalam; Srinivasan, Narasimhan; Druz, Boris; Tripathy, S; Bhatia, C S

    2014-05-21

    Filtered cathodic vacuum arc (FCVA) processed carbon films are being considered as a promising protective media overcoat material for future hard disk drives (HDDs). However, at ultrathin film levels, FCVA-deposited carbon films show a dramatic change in their structure in terms of loss of sp3 bonding, density, wear resistance etc., compared to their bulk counterpart. We report for the first time how an atomically thin (0.4 nm) silicon nitride (SiNx) interlayer helps in maintaining/improving the sp3 carbon bonding, enhancing interfacial strength/bonding, improving oxidation/corrosion resistance, and strengthening the tribological properties of FCVA-deposited carbon films, even at ultrathin levels (1.2 nm). We propose the role of the SiNx interlayer in preventing the catalytic activity of Co and Pt in media, leading to enhanced sp3C bonding (relative enhancement~40%). These findings are extremely important in view of the atomic level understanding of structural modification and the development of high density HDDs.

  6. Further Studies on the Effect of SiNx Refractive Index and Emitter Sheet Resistance on Potential-Induced Degradation

    Energy Technology Data Exchange (ETDEWEB)

    Oh, Jaewon; Dauksher, Bill; Bowden, Stuart; Tamizhmani, Govindasamy; Hacke, Peter; D' Amico, John

    2017-03-01

    We present the impacts of silicon nitride (SiNx) antireflection coating refractive index and emitter sheet resistance on potential-induced degradation of the shunting type (PID-s). Previously, it has been shown that the cell becomes more PID-s-susceptible as the refractive index decreases or the emitter sheet resistance increases. To verify the effect of refractive index on PID-s, we fabricated cells with varying SiNx refractive index (1.87, 1.94, 2.05) on typical p-type base solar cells with ~60 O/sq emitters. However, none of these cells showed output power degradation, regardless of the refractive index. Further investigation of the emitter showed that the PID-s was suppressed at ~60 O/sq due to the extremely high surface phosphorus concentration (6 x 1021 cm-3), as measured by secondary ion mass spectrometry. Furthermore, PID-s was observed on cells possessing a high emitter sheet resistance (~80 O/sq). The emitter surface phosphorus concentration plays an important role in determining PID-s susceptibility.

  7. W/Cu thin film infrared reflector for TiNxOy based selective solar absorber with high thermal stability

    Science.gov (United States)

    Zhang, J.; Chen, T. P.; Liu, Y. C.; Liu, Z.; Yang, H. Y.

    2017-05-01

    The W/Cu thin film structure is deposited by magnetron sputtering to form the infrared reflector for the TiNxOy based selective solar absorber (SSA) that can be used in the low- and middle-temperature applications. The structural, chemical, and optical properties of the SSA layers that experienced thermal annealing at different temperatures for various durations have been investigated with the characterization techniques, including X-ray photoelectron spectroscopy, X-ray diffraction, atomic force microscopy, spectroscopic ellipsometry, and spectrophotometry. Without a W layer, the reflectance in both visible and infrared ranges of the SSA increases as a result of the crystallization of the Cu layer at elevated temperatures. With a W layer with appropriate film thickness, the increase of the reflectance in the visible range can be suppressed to maintain a high solar absorptance, whereas a high infrared reflectance can be maintained to achieve a low thermal emittance. It is shown that for the SiO2-TiNxOy-W-Cu-Glass SSA with a 15 nm W thin film, thermal annealing can significantly reduce the thermal emittance to a low value (e.g., 4.4% at the temperature of 400 °C for annealing at 400 °C for 6 h), whereas the solar absorptance can be maintained at a high value (e.g., 92.2% for the annealing at 400 °C for 6 h).

  8. Highly efficient rice straw utilization for poly-(γ-glutamic acid) production by Bacillus subtilis NX-2.

    Science.gov (United States)

    Tang, Bao; Lei, Peng; Xu, Zongqi; Jiang, Yongxiang; Xu, Zheng; Liang, Jinfeng; Feng, Xiaohai; Xu, Hong

    2015-10-01

    Lignocellulosic biomass has been identified as an economic and environmental feedstock for future biotechnological production. Here, for the first time, poly-(γ-glutamic acid) (PGA) production by Bacillus subtilis NX-2 using rice straw is investigated. Based on two-stage hydrolysis and characteristic consumption of xylose and glucose by B. subtilis NX-2, a co-fermentation strategy was designed to better accumulate PGA in a 7.5L fermentor by two feeding methods. The maximum cumulative respective PGA production and PGA productivity were 73.0 ± 0.5 g L(-1) and 0.81 g L(-1) h(-1) by the continuous feeding method, with carbon source cost was saved by 84.2% and 42.5% compared with glucose and cane molasse, respectively. These results suggest that rice straw, a type of abundant, low-cost, non-food lignocellulosic feedstock, may be feasibly and efficiently utilized for industrial-scale production of PGA. Copyright © 2015 Elsevier Ltd. All rights reserved.

  9. Aperture synthesis observations of the molecular environment of the SGR A complex. I - The M-0.13-0.08 molecular cloud

    Science.gov (United States)

    Okumura, Sachiko K.; Ishiguro, Masato; Fomalont, Edward B.; Chikada, Yoshihiro; Kasuga, Takashi; Morita, Koh-Ichiro; Kawabe, Ryohei; Kobayashi, Hideyuki; Kanzawa, Tomio; Iwashita, Hiroyuki; Hasegawa, Tetsuo

    1989-12-01

    NH3 and H2O maser observations of the 20 km/s molecular cloud M-0.13-0.08 in the Sgr A complex region are reported. NH3 (1,1) and (2,2) lines were observed simultaneously, and the molecular gas temperature and density are estimated. The NH3 emission is elongated in the smae direction of the entire M-0.13-0.08 cloud and has a large velocity gradient along its major axis. Strong NH3 emission is located in the northern part of the cloud, where a perturbed velocity field and broad line widths are observed. In addition, a new H2O maser spot was detected near one of the nonthermal continuum sources. These observational results suggest the physical association between a part of the M-0.13-0.08 molecular cloud and the nonthermal continuum sources in the Sgr A complex.

  10. H2-Ar dilution for improved c-Si quantum dots in P-doped SiNx:H thin film matrix

    Science.gov (United States)

    Liu, Jia; Zhang, Weijia; Liu, Shengzhong (Frank)

    2017-02-01

    Phosphorus-doped hydrogenated silicon nitride (SiNx:H) thin films containing crystalline silicon quantum dot (c-Si QD) was prepared by plasma enhanced chemical vapor deposition (PECVD) using hydrogen-argon mixed dilution. The effects of H2/Ar flow ratio on the structural, electrical and optical characteristics of as-grown P-doped SiNx:H thin films were systematically investigated. Experimental results show that crystallization is promoted by increasing the H2/Ar flow ratio in dilution, while the N/Si atomic ratio is higher for thin film deposited with argon-rich dilution. As the H2/Ar flow ratio varies from 100/100 to 200/0, the samples exhibit excellent conductivity owing to the large volume fraction of c-Si QDs and effective P-doping. By adjusting the H2/Ar ratio to 100/100, P-doped SiNx:H thin film containing tiny and densely distributed c-Si QDs can be obtained. It simultaneously possesses wide optical band gap and high dark conductivity. Finally, detailed discussion has been made to analyze the influence of H2-Ar mixed dilution on the properties of P-doped SiNx:H thin films.

  11. Compositional and Structural Properties of TiO2-xNx Thin Films Deposited by Radio-Frequency Magnetron Sputtering

    Institute of Scientific and Technical Information of China (English)

    JING Shi-Wei; LIU Yi-Chun; LIANG Yu; MA Jian-Gang; LU You-Ming; SHEN De-Zhen; ZHANG Ji-Ying; FAN Xi-Wu; MU Ri-Xiang

    2006-01-01

    @@ TiO2-xNx thin films are deposited onto Si(100) and quartz substrates by a rf magnetron sputtering method using a titanium metal disc as a target in Ar, N2, and O2 atmospheres. The substrate temperature is kept at 300°C. The O2 and Ar gas flow rates are kept to be constants and the N gas flow rate is varied. TiO2-xNx films with different N contents are characterized by x-ray diffraction and x-ray photoelectron spectroscopy. The results indicate that the TiO2-xNx thin films can be obtained at 13% N and 15% N contents in the film, and the films with mixed TiO2 and TiN crystal can be obtained at 13% N and 15% N contents in the film. In terms of the results of x-ray photoelectron spectroscopy, N 1s of β-N (396 eV) is the main component in the TiO2-xNx thin films.

  12. Improved GaN Brown on Si(111 ) substrate using ammonia flow modulation on SiNx mask layer by MOCVD

    Institute of Scientific and Technical Information of China (English)

    YU NaiSen; WANG Yong; WANG Hui; NG KaiWei; LAU KeiMay

    2009-01-01

    In this paper, 1 μm n-GaN was grown by using varied and fixed ammonia flow (NH3) on SiNx mask layer on Si(111) substrate using metal organic chemical vapor deposition (MOCVD). In-situ optical reflectivity traces of GaN growth show that the three- to two-dimensional process has been prolonged by using varied ammonia flow on SiNx mask layer method compared with that grown by fixing ammonia flow. Structural and optical properties were characterized by high-resolution X-ray diffraction and photolu-minescence, and compared with the sample grown by fixing ammonia flow, GaN grown using the varied ammonia flow on SiNx mask layer showed better structure and optical quality. It was assumed that the low NH3 flow in the initial growth stage considerably increased the GaN island density on the nano-porous SiNx layer by enhancing vertical growth. Lateral growth was significantly favored by high NH3 flow in the subsequent step. As a result, the improved crystal and optical quality was achieved utilizing NH3 flow modulation for GaN buffer growth on Si(111) substrate.

  13. Influence of low energy argon plasma treatment on the moisture barrier performance of hot wire-CVD grown SiNx multilayers

    Science.gov (United States)

    Majee, Subimal; Fátima Cerqueira, Maria; Tondelier, Denis; Geffroy, Bernard; Bonnassieux, Yvan; Alpuim, Pedro; Bourée, Jean Eric

    2014-01-01

    The reliability and stability are key issues for the commercial utilization of organic photovoltaic devices based on flexible polymer substrates. To increase the shelf-lifetime of these devices, transparent moisture barriers of silicon nitride (SiNx) films are deposited at low temperature by hot wire CVD (HW-CVD) process. Instead of the conventional route based on organic/inorganic hybrid structures, this work defines a new route consisting in depositing multilayer stacks of SiNx thin films, each single layer being treated by argon plasma. The plasma treatment allows creating smoother surface and surface atom rearrangement. We define a critical thickness of the single layer film and focus our attention on the effect of increasing the number of SiNx single-layers on the barrier properties. A water vapor transmission rate (WVTR) of 2 × 10-4 g/(m2·day) is reported for SiNx multilayer stack and a physical interpretation of the plasma treatment effect is given.

  14. Optimal design of light trapping in thin-film solar cells enhanced with graded SiNx and SiOxNy structure.

    Science.gov (United States)

    Zhao, Yongxiang; Chen, Fei; Shen, Qiang; Zhang, Lianmeng

    2012-05-07

    In this paper, a graded SiNx and SiOxNy structure is proposed as antireflection coatings deposited on top of amorphous silicon (α-Si) thin-film solar cell. The structural parameters are optimized by differential evolution in order to enhance the optical absorption of solar cells to the greatest degree. The optimal design result demonstrates that the nonlinear profile of dielectric constant is superior to the linear profile, and discrete multilayer graded antireflection coatings can outperform near continuously graded antireflection coatings. What's more, the electric field intensity distributions clearly demonstrate the proposed graded SiNx and SiOxNy structure can remarkably increase the magnitude of electric field of a-Si:H layer and hence, enhance the light trapping of a-Si:H thin-film solar cells in the whole visible and near-infrared spectrum. Finally, we have compared the optical absorption enhancements of proposed graded SiNx and SiOxNy structure with nanoparticles structure, and demonstrated that it can result in higher enhancements compared to the dielectric SiC and TiO2 nanoparticles. We have shown that the optimal graded SiNx and SiOxNy structure optimized by differential evolution can reach 33.31% enhancement which has exceeded the ideal limit of 32% of nanoparticles structure including plasmonic Ag nanoparticles, dielectric SiC and TiO2 nanoparticles.

  15. OPTIMIZATION OF MANUFACTURING TEHNOLOGY FOR “ECCENTRIC MASS” COMPONENT OF A NEW TYPE OF VIBRATORY COMPACTOR USING NX 7.5 SOFTWARE

    Directory of Open Access Journals (Sweden)

    Eftimie Dorin

    2013-11-01

    Full Text Available The paper presents the technological optimization process of the eccentric mass component using the NX 7.5 software. The new design of the vibratory compactor with variable amplitudes was modeled 3D. The manufacturing technology presents graphical aspects of operations during mechanical processing.

  16. Telmisartan protects 5/6 Nx rats against renal injury by enhancing nNOS-derived NO generation via regulation of PPARγ signaling.

    Science.gov (United States)

    Zou, Rong; He, Yong; Li, Yue-Qiang; Han, Ming; Ma, Zu-Fu; Liu, Xiao-Cheng; Zeng, Rui; Shao, Jv-Fang; Guo, Yan-Chao; He, Xiao-Yu; Yang, Ping; Xu, Gang; Wang, Cong-Yi; Yao, Ying

    2014-01-01

    A 5/6 nephrectomized (Nx) rat model was employed to address the impact of telmisartan on CKD related renal injury and the underlying molecular mechanisms. It was noted that telmisartan provided protection for rats against 5/6 Nx induced lethality. Telmisartan treated 5/6 Nx rats manifested improved renal function as characterized by the higher GFR but lower urinary albumin, BUN and Scr as compared with that of control rats. Telmisartan treatment also significantly decreased systolic blood pressure and alleviated glomerulosclerosis and interstitial fibrosis. Mechanistic studies revealed that telmisartan possesses the capability to increase NO generation in the kidney. Further studies demonstrated that telmisartan promotes PPARγ expression, by which it specifically enhances nNOS expression in the kidneys after 5/6 Nx insult. Particularly, blockade of PPARγ signaling by GW9662 abolished the protective effect conferred by telmisartan, indicating that telmisartan induction of renal nNOS expression along with NO generation is dependent on PPARγ signaling. Together, our data support that telmisartan could be a promising drug for treatment of chronic kidney diseases in diverse clinical settings.

  17. Cathode encapsulation of OLEDs by atomic layer deposited Al2O3 films and Al2O3/a-SiNx:H stacks

    NARCIS (Netherlands)

    Keuning, W.; Van de Weijer, P.; Lifka, H.; Kessels, W.M.M.; Creatore, M.

    2011-01-01

    Al2O3 thin films synthesized by plasma-enhanced atomic layer deposition(ALD) at room temperature (25 ºC) have been tested as water vapor per-meation barriers for OLED devices. Silicon nitride films (a-SiNx:H)deposited by plasma-enhanced chemical vapor deposition (PE-CVD) servedas reference and were

  18. Effect of substituents on the strength of N-X (X = H, F, and Cl) bond dissociation energies: a high-level quantum chemical study.

    Science.gov (United States)

    O'Reilly, Robert J; Karton, Amir; Radom, Leo

    2011-06-02

    The effect of substituents on the strength of N-X (X = H, F, and Cl) bonds has been investigated using the high-level W2w thermochemical protocol. The substituents have been selected to be representative of the key functional groups that are likely to be of biological, synthetic, or industrial importance for these systems. We interpreted the effects through the calculation of relative N-X bond dissociation energies (BDE) or radical stabilization energies (RSE(NX)). The BDE and RSE(NX) values depend on stabilizing/destabilizing effects in both the reactant molecule and the product radical of the dissociation reactions. To assist us in the analysis of the substituent effects, a number of additional thermochemical quantities have been introduced, including molecule stabilization energies (MSE(NX)). We find that the RSE(NH) values are (a) increased by electron-donating alkyl substituents or the vinyl substituent, (b) increased in imines, and (c) decreased by electron-withdrawing substituents such as CF(3) and carbonyl moieties or through protonation. A different picture emerges when considering the RSE(NF) and RSE(NCl) values because of the electronegativities of the halogen atoms. The RSE(NX)s differ from the RSE(NH) values by an amount related to the stabilization of the N-halogenated molecules and given by MSE(NX). We find that substituents that stabilize/destabilize the radicals also tend to stabilize/destabilize the N-halogenated molecules. As a result, N-F- and N-Cl-containing molecules that include alkyl substituents or correspond to imines are generally associated with RSE(NF) and RSE(NCl) values that are less positive or more negative than the corresponding RSE(NH). In contrast, N-F- and N-Cl-containing molecules that include electron-withdrawing substituents or are protonated are generally associated with RSE(NF) and RSE(NCl) values that are more positive or less negative than the corresponding RSE(NH).

  19. Factors on prognosis in patients of stage pT3N0M0 thoracic esophageal squamous cell carcinoma after two-field esophagectomy

    Directory of Open Access Journals (Sweden)

    Yuxiang Wang

    2015-01-01

    Conclusion: For patients of pT3N0M0 thoracic ESCC, the independent factors were the site of a lesion for OS and PFS, Hb levels, small LN in CT, and number of removed LN for OS. The value of postoperative adjuvant therapy need be further proved.

  20. Lowest surface recombination velocity on n-type crystalline silicon using PECVD a-Si:H/SiNx bi-layer passivation

    Science.gov (United States)

    Stepanov, Dmitri S.; Chowdhury, Zahidur R.; Kherani, Nazir P.

    2011-08-01

    Energy conversion efficiency of crystalline silicon (c-Si) solar cells manufactured on thin substrates is strongly influenced by the recombination losses of photo-generated charge carriers at the surface and in its proximity. Intrinsic hydrogenated amorphous silicon (i-a-Si:H) deposited using DC saddle-field plasma enhanced chemical vapour deposition (PECVD) at a low temperature of ~200°C reduces recombination losses of photo-generated carriers through passivation of defects at the surface. This study reports on high quality surface passivation achieved using a dual layer approach wherein a 70nm amorphous silicon nitride (SiNx) capping layer is deposited on a less than 10nm thin i-a-Si:H layer. While the a-Si:H layer is effective in passivating the interface recombination sites, SiNx is deemed to incorporate field-effect passivation, thus providing a minority carrier mirror. Additionally, SiNx layer acts as an anti-reflection coating with a low absorption coefficient in the optical frequency range of interest. The SiNx deposition conditions, known to strongly influence the passivating quality of the dual layer structure, were systematically investigated using the response surface methodology (RSM). The optimal deposition parameters obtained from the RSM study were experimentally verified to yield the lowest surface recombination velocity of 3.5 cm/s on 1-2 Ω-cm n-type FZ c-Si using a PECVD a-Si:H/SiNx bi-layer passivation stack.

  1. The prognostic impact of preoperative blood monocyte count in pathological T3N0M0 rectal cancer without neoadjuvant chemoradiotherapy.

    Science.gov (United States)

    Zhang, Lu-Ning; Xiao, Weiwei; OuYang, Pu-Yun; You, Kaiyun; Zeng, Zhi-Fan; Ding, Pei-Rong; Pan, Zhi-Zhong; Xu, Rui-Hua; Gao, Yuan-Hong

    2015-09-01

    It remains controversial whether adjuvant therapy should be delivered to pathological T3N0M0 rectal cancer without neoadjuvant chemoradiotherapy. Thus identification of patients at high risk is of particular importance. Herein, we aimed to evaluate whether the absolute peripheral blood monocyte count can stratify the pathological T3N0M0M0 rectal cancer patients in survival. A total of 270 pathological T3N0M0 rectal cancer patients with total mesorectal excision-principle radical resection were included. The optimal cut-off value of preoperative monocyte count was determined by receiver operating characteristic curve analysis. Overall survival and disease-free survival between low- and high-monocyte were estimated by Kaplan-Meier method and Cox regression model. The optimal cut-off value for monocyte count was 595 mm(3). In univariate analysis, patients with monocyte counts higher than 595/mm(3) had significantly inferior 5-year overall survival (79.2 vs 94.2 %, P = 0.006) and disease-free survival (67.8 vs 86.0 %, P count remained to be associated with poor overall survival (HR = 2.55, 95 % CI 1.27-5.10; P = 0.008) and disease-free survival (HR = 2.63, 95 % CI 1.48-4.69; P = 0.001). Additionally, the significant association of monocyte count with disease-free survival was hardly influenced in the subgroup analysis, whereas this correlation was restricted to the males and patients with normal carcinoembryonic antigen (CEA) level (count is independently predictive of worse survival of pathological T3N0M0 rectal cancer patients without neoadjuvant chemoradiotherapy. Postoperative adjuvant therapy might be considered for patients with high-monocyte count.

  2. Role of SiNx Barrier Layer on the Performances of Polyimide Ga2O3-doped ZnO p-i-n Hydrogenated Amorphous Silicon Thin Film Solar Cells

    Directory of Open Access Journals (Sweden)

    Fang-Hsing Wang

    2014-02-01

    Full Text Available In this study, silicon nitride (SiNx thin films were deposited on polyimide (PI substrates as barrier layers by a plasma enhanced chemical vapor deposition (PECVD system. The gallium-doped zinc oxide (GZO thin films were deposited on PI and SiNx/PI substrates at room temperature (RT, 100 and 200 °C by radio frequency (RF magnetron sputtering. The thicknesses of the GZO and SiNx thin films were controlled at around 160 ± 12 nm and 150 ± 10 nm, respectively. The optimal deposition parameters for the SiNx thin films were a working pressure of 800 × 10−3 Torr, a deposition power of 20 W, a deposition temperature of 200 °C, and gas flowing rates of SiH4 = 20 sccm and NH3 = 210 sccm, respectively. For the GZO/PI and GZO-SiNx/PI structures we had found that the GZO thin films deposited at 100 and 200 °C had higher crystallinity, higher electron mobility, larger carrier concentration, smaller resistivity, and higher optical transmittance ratio. For that, the GZO thin films deposited at 100 and 200 °C on PI and SiNx/PI substrates with thickness of ~1000 nm were used to fabricate p-i-n hydrogenated amorphous silicon (α-Si thin film solar cells. 0.5% HCl solution was used to etch the surfaces of the GZO/PI and GZO-SiNx/PI substrates. Finally, PECVD system was used to deposit α-Si thin film onto the etched surfaces of the GZO/PI and GZO-SiNx/PI substrates to fabricate α-Si thin film solar cells, and the solar cells’ properties were also investigated. We had found that substrates to get the optimally solar cells’ efficiency were 200 °C-deposited GZO-SiNx/PI.

  3. 基于NX CAM的汽车转向节终锻模膛的高速加工

    Institute of Scientific and Technical Information of China (English)

    郑维明; 罗功波; 于文强; 赵婷婷

    2013-01-01

    本文在NX CAM平台上,针对汽车转向节锻模具有不规则曲面和飞边的特点,分析了相应的高速铣削流程与走刀策略,并使用自动编程功能优化了切削方式、刀具轨迹等工艺参数,最后采用误差小、精度高的NURBS插补方法简化了NC加工程序代码,提高了模具的加工的质量和效率。

  4. Preservative effect of food-based fermentate from Lactobacillus acidophilus NX2-6 on chilled pork patties.

    Science.gov (United States)

    Zhang, Qianying; Lu, Yingjian; Liu, Xiaoxi; Bie, Xiaomei; Lv, Fengxia; Lu, Zhaoxin

    2014-03-01

    The food-based fermentate (FBF) from Lactobacillus acidophilus NX2-6 has a broad-spectrum antibacterial activity but has not previously been reported as a food preservative. Experiments were conducted to assess its application as a preservative in pork patties. The effect of freeze-dried FBF on the microbiological parameters, physicochemical changes, and sensory evaluations of chilled pork patties stored for 15 days at 4°C was investigated. The five treatments evaluated included a control (meat only), nisin (meat plus 0.5% nisin), L.1 (meat plus 2% freeze-dried FBF), L.2 (meat plus 4% freeze-dried FBF), and L.3 (meat plus 8% freeze-dried FBF). The results showed that freeze-dried FBF could significantly (P preservative in chilled pork patties.

  5. Effect of rare earth and other cationic promoters on properties of CoMoNx/CNTs catalysts for ammonia decomposition

    Institute of Scientific and Technical Information of China (English)

    ZHAO Zhaohui; ZOU Hanbo; LIN Weiming

    2013-01-01

    Carbon nanotubes (CNTs) supported Co-Mo nitride catalysts were prepared by incipient-wetness impregnation method and temperature-programmed reaction in N2-H2 mixed gases.The effects of cationic promoters (K,Ba,La,Ce and Zr) on the catalytic performance and surface properties were investigated.All samples were characterized by N2 physical adsorption,X-ray diffraction,and temperature-programmed reduction of H2.The results showed that the addition of promoters reduced the crystallite size of Mo2N and Co3Mo3N species and increased their surface area and dispersion.Among the catalysts,the La promoted CoMoNx/CNTs catalyst had the highest ammonia conversion which could reach 97.63% at 600 ℃.

  6. Verifying field-effect passivation of a SiNx layer on a silicon nanopillar array using surface photovoltage characterization

    Science.gov (United States)

    Kim, Eunah; Cho, Yunae; Sohn, Ahrum; Kim, Dong-Wook; Park, Hyeong-Ho; Kim, Joondong

    In silicon (Si) wafer based photovoltaic (PV) devices, light-trapping strategies to improve optical absorption are very important due to the indirect bandgap of Si. Surface nano-patterned Si enable omnidirectional broadband antireflection (AR) effects with the help of graded refractive index, multiple scattering, diffraction, and Mie resonance. In this work, the surface photovoltage (SPV) of periodic nanopillar (NP) arrays were investigated using Kelvin probe force microscopy (KPFM). The SPV characteristics clearly revealed that positive fixed charges in SiNx layers induced downward band bending at the Si surface and increased SPV at the NP top surface. The similar SPV value of NPs and planar counterpart suggests that field effect passivation by the dielectric layer coating could help improve PV performance of nanostructure-based Si solar cells and that KPFM measurements are useful tool for quantitative investigation of surface electrical properties of Si nanostructures.

  7. Cytoplasmic N-glycosyltransferase of Actinobacillus pleuropneumoniae is an inverting enzyme and recognizes the NX(S/T) consensus sequence.

    Science.gov (United States)

    Schwarz, Flavio; Fan, Yao-Yun; Schubert, Mario; Aebi, Markus

    2011-10-07

    N-Linked glycosylation is a frequent protein modification that occurs in all three domains of life. This process involves the transfer of a preassembled oligosaccharide from a lipid donor to asparagine side chains of polypeptides and is catalyzed by the membrane-bound oligosaccharyltransferase (OST). We characterized an alternative bacterial pathway wherein a cytoplasmic N-glycosyltransferase uses nucleotide-activated monosaccharides as donors to modify asparagine residues of peptides and proteins. N-Glycosyltransferase is an inverting glycosyltransferase and recognizes the NX(S/T) consensus sequence. It therefore exhibits similar acceptor site specificity as eukaryotic OST, despite the unrelated predicted structural architecture and the apparently different catalytic mechanism. The identification of an enzyme that integrates some of the features of OST in a cytoplasmic pathway defines a novel class of N-linked protein glycosylation found in pathogenic bacteria.

  8. Optimization of SiNx Single and Double Layer ARC for Silicon Thin Film Solar Cells on Glass

    Directory of Open Access Journals (Sweden)

    M. Beye

    2013-06-01

    Full Text Available The aim of this study is the optimization of the antireflection effect of SiN in silicon on glass based structure. A numerical calculation is performed and a SiNx double stack antireflection coating is found to have significant advantages over single-layer due to their broad-range coverage of the solar spectrum. Moreover, it was found that minimum reflection losses is obtained for SiN/SiN double-layer ARC with refractive indexes of 1.9 et 2.3 for the top and the bottom layer, respectively. The effect of the incident angle on reflectance is also studied. The numerical optimization procedure and its results are presented.

  9. 基于Siemens NX 8.5的典型零件数控加工仿真

    Institute of Scientific and Technical Information of China (English)

    何玲

    2013-01-01

    For current CNC industry, most enterprises use manual process simple or less accuracy parts by manual programming in order to save costs.However,the manual programming cannot meet the requirements of high-volume production. And it also takes more material and time, thus , automatic programming plays an important role in production.Just a typical case in this paper, we introduced the analog processing to simulate machining for automatic generation of NC programs which based on Siemens NX8.5 CNC machining and the application of the Yulong simulation system .%  当前的数控行业中,对于简单零件或者是精度要求不高的零件加工,企业大都采用手工编程,以此来节省成本.但是,对于复杂零件或者是精度要求比较高的零件,在进行大批量生产时,手工编程无法满足要求,耗时耗材,这时自动编程就起着显著作用.本文以一典型零件为例,介绍了基于Siemens NX8.5的数控加工以及应用宇龙仿真系统对自动生成的NC程序进行模拟加工.

  10. Delayed risk stratification system in pT1aN0/Nx DTC patients treated without radioactive iodine

    Directory of Open Access Journals (Sweden)

    Danuta Ga˛sior-Perczak

    2017-09-01

    Full Text Available Purpose: Delayed risk stratification (DRS system by Momesso and coworkers was accepted by the American Thyroid Association as a diagnostic tool for the risk stratification of unfavorable clinical outcomes and to monitor the clinical outcomes of differentiated thyroid cancer (DTC patients treated without radioactive iodine (RAI. The aim of this study was to evaluate the DRS system in patients with pT1aN0/Nx stage. Methods: The study included 304 low-risk patients after thyroidectomy (n = 202 or lobectomy (n = 102 without RAI and were treated at a single center. The median age was 50.5 years, 91.1% were women and the median follow-up was 4 years. DRS of the treatment response was performed based on medical records and according to the criteria of Momesso and coworkers. Disease course (recurrence, death and status (remission, persistent disease on December 31, 2016 were evaluated. The relationship between unfavorable outcomes and the DRS system was evaluated. Results: Response to initial therapy was excellent in 272 patients (89.5%, indeterminate in 31 (10.2% and biochemical incomplete (increased TgAb levels in one (0.3%. Two patients in the excellent response group experienced recurrence at 6 and 7 years of follow-up (after lobectomy. None of the patients with indeterminate and biochemical incomplete response developed structural disease, and none of the patients died during the follow-up. Conclusions: The DRS system was not useful for predicting the risk of unfavorable clinical outcomes and cannot be used to personalize the monitoring method of the disease in patients at pT1aN0/Nx stage who are not treated with RAI.

  11. Delayed risk stratification system in pT1aN0/Nx DTC patients treated without radioactive iodine.

    Science.gov (United States)

    Gąsior-Perczak, Danuta; Pałyga, Iwona; Szymonek, Monika; Kowalik, Artur; Walczyk, Agnieszka; Kopczyński, Janusz; Lizis-Kolus, Katarzyna; Słuszniak, Anna; Słuszniak, Janusz; Łopatyński, Tomasz; Mezyk, Ryszard; Góźdź, Stanisław; Kowalska, Aldona

    2017-08-18

    A delayed risk stratification (DRS) system by Momesso et al. was accepted by the American Thyroid Association as a diagnostic tool for the risk stratification of unfavorable clinical outcomes and to monitor the clinical outcomes of differentiated thyroid cancer (DTC) patients treated without radioactive iodine (RAI). The aim of this study was to evaluate the DRS system in patients with pT1aN0/Nx stage . The study included 304 low-risk patients after thyroidectomy (n=202) or lobectomy (n=102) without RAI and were treated at a single center. The median age was 50.5 years, 91.1% were women, and the median follow-up was 4 years. DRS of the treatment response was performed based on medical records and according to the criteria of Momesso et al. Disease course (recurrence, death) and status (remission, persistent disease) on December 31, 2016 were evaluated. The relationship between unfavorable outcomes and the DRS system was evaluated. Response to initial therapy was excellent in 272 patients (89.5%), indeterminate in 31 (10.2%), and biochemical incomplete (increased TgAb levels) in one (0.3%). Two patients in the excellent response group experienced recurrence at 6 and 7 years of follow-up (after lobectomy). None of the patients with indeterminate and biochemical incomplete response developed structural disease, and none of the patients died during the follow-up. The DRS system was not useful for predicting the risk of unfavorable clinical outcomes and cannot be used to personalize the monitoring method of the disease in patients at pT1aN0/Nx stage who are not treated with RAI.

  12. Fundamental properties of a-SiNx:H thin films deposited by ICP-PECVD for MEMS applications

    Science.gov (United States)

    Dergez, D.; Schalko, J.; Bittner, A.; Schmid, U.

    2013-11-01

    In this study, the impact of deposition conditions on the properties of amorphous hydrogenated silicon nitride (a-SiNx:H) films using an inductively coupled plasma enhanced chemical vapor deposition technique (ICP-CVD) is evaluated. Due to the large number of experiments - even when taking only the most important synthesization parameters into account such as the total pressure in the deposition chamber, the substrate temperature, the ICP power and the flow rate ratio of N2/SiH4 - a design of experiments-based approach is chosen. As expected, the deposition rate strongly depends on the ICP power and the N2/SiH4 flow rate ratio, respectively. Films in the field of investigation deposited with a high flow rate of N2 labeled as Type I show relatively low mechanical stress values between -50 and +200 MPa, but exhibit a strong drift behavior toward compressive stress. Layers deposited at low nitrogen flow rates (Type II), however, yield large compressive stress and are stable as a function of time. The wet etch rate in hydrofluoric acid shows a gap of over two orders of magnitude when comparing the two a-SiNx:H types, indicating strong differences in the chemical composition. Fourier-transform infrared measurements demonstrate that in Type I films the hydrogen is mainly bonded to nitrogen, in contrast to Type II films, where Si-H bonds dominate. Surface related X-ray photoelectron spectroscopy measurements show that Type II layers have higher relative silicon content, while depth profiles yield that the oxygen content Type I films is above 10 at.%. This high oxygen content is proposed to be the result of diffusion of H2O into the layer, causing oxidation, and, as a consequence, the drifting behavior of the intrinsic film stress.

  13. Finite Element Analysis of Mechanical Product Based on NX and ANSYS%基于NX和ANSYS的机械产品有限元分析

    Institute of Scientific and Technical Information of China (English)

    张焱焱

    2011-01-01

    对有限元分析的关键技术网格划分的理论方法进行了总结,采用UG NX7进行机械产品的三维建模、网格划分和载荷施加,通过图形数据转换接口将数模导入ANSYS中,利用ANSYS对机械产品进行仿真分析.最后以水平定向钻关键部件为例展示了建模及分析过程.%It summerizes the FEA key technology and mesh methods, builds the 3D and meshing model based on UG NX7, transformes the CAD model file into ANSYS through the interface of graph - transform and analyzes the key component of mechanical product. It takes the horizontal orientation drilling machine to demonstrate the effectiveness of the method.

  14. Comparison of NxTAG Respiratory Pathogen Panel and Anyplex II RV16 Tests for Multiplex Detection of Respiratory Pathogens in Hospitalized Children.

    Science.gov (United States)

    Brotons, Pedro; Henares, Desiree; Latorre, Irene; Cepillo, Antonio; Launes, Cristian; Muñoz-Almagro, Carmen

    2016-12-01

    Multiplex molecular techniques can detect a diversity of respiratory viruses and bacteria that cause childhood acute respiratory infection rapidly and conveniently. However, currently available techniques show high variation in performance. We sought to compare the diagnostic accuracy of the novel multiplex NxTAG respiratory pathogen panel (RPP) RUO test versus a routine multiplex Anyplex II RV16 assay in respiratory specimens collected from children <18 years of age hospitalized with nonspecific symptoms of acute lower respiratory infection. Parallel testing was performed on nasopharyngeal aspirates prospectively collected at referral Children's Hospital Sant Joan de Déu (Barcelona, Spain) between June and November 2015. Agreement values between the two tests and kappa coefficients were assessed. Bidirectional sequencing was performed for the resolution of discordant results. A total of 319 samples were analyzed by both techniques. A total of 268 (84.0%) of them yielded concordant results. Positive percent agreement values ranged from 83.3 to 100%, while the negative percent agreement was more than 99% for all targets except for enterovirus/rhinovirus (EV/RV; 94.4%). Kappa coefficients ranged from 0.83 to 1.00. Discrepancy analysis confirmed 66.0% of NxTAG RPP RUO results. A total of 260 viruses were detected, with EV/RV (n = 105, 40.4%) being the most prevalent target. Viral coinfections were found in 44 (14.2%) samples. In addition, NxTAG RPP RUO detected single bacterial and mixed viral-bacterial infections in seven samples. NxTAG RPP RUO showed high positive and negative agreement with Anyplex II RV16 for main viruses that cause acute respiratory infections in children, coupled with an additional capability to detect some respiratory bacteria. Copyright © 2016, American Society for Microbiology. All Rights Reserved.

  15. Improvement of Physical Decline Through Combined Effects of Muscle Enhancement and Mitochondrial Activation by a Gastric Hormone Ghrelin in Male 5/6Nx CKD Model Mice.

    Science.gov (United States)

    Tamaki, Masanori; Hagiwara, Aika; Miyashita, Kazutoshi; Wakino, Shu; Inoue, Hiroyuki; Fujii, Kentaro; Fujii, Chikako; Sato, Masaaki; Mitsuishi, Masanori; Muraki, Ayako; Hayashi, Koichi; Doi, Toshio; Itoh, Hiroshi

    2015-10-01

    Because a physical decline correlates with an increased risk of a wide range of disease and morbidity, an improvement of physical performance is expected to bring significant clinical benefits. The primary cause of physical decline in 5/6 nephrectomized (5/6Nx) chronic kidney disease model mice has been regarded as a decrease in muscle mass; however, our recent study showed that a decrease in muscle mitochondria plays a critical role. In the present study, we examined the effects of a gastric hormone ghrelin, which has been reported to promote muscle mitochondrial oxidation, on the physical decline in the chronic kidney disease model mice, focusing on the epigenetic modulations of a mitochondrial activator gene, peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α). Ghrelin treatment improved a decline in exercise endurance of 5/6Nx mice, associated with an increase in both of the muscle mass and mitochondrial amount. The expression level of PGC-1α was decreased in the skeletal muscle of 5/6Nx mice, which was associated with an increase in the methylation ratio of the cytosine residue at 260 base pairs upstream of the initiation point. Conversely, ghrelin treatment de-methylated the cytosine residue and increased the expression of PGC-1α. A representative muscle anabolic factor, IGF-1, did not affect the expression of PGC-1α and muscle mitochondrial amount, although it increased muscle mass. As a result, IGF-1 treatment in 5/6Nx mice did not increase the decreased exercise endurance as effectively as ghrelin treatment did. These findings indicate an advantage of ghrelin treatment for a recovery of physical decline.

  16. Fabrication and Photocatalytic Property of One-Dimensional SrTiO3/TiO2-xNx Nanostructures

    OpenAIRE

    Huarong Zhang; Miao Guashuai; Ma Xingping; Wang Bei

    2013-01-01

    One-dimensional SrTiO3/TiO2−xNx nanostructures were prepared by the hydrothermal method and investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS) measurements. The photocatalytic activities of the prepared samples were evaluated by photodegrading the methylene blue (MB) solution. According to the characterizations, the intermediate product of SrTiO3/titanate...

  17. A Final Result on the Oscillation of Solutions of the Linear Discrete Delayed Equation Δx(n=−p(nx(n−k with a Positive Coefficient

    Directory of Open Access Journals (Sweden)

    J. Baštinec

    2011-01-01

    Full Text Available A linear (k+1th-order discrete delayed equation Δx(n=−p(nx(n−k where p(n a positive sequence is considered for n→∞. This equation is known to have a positive solution if the sequence p(n satisfies an inequality. Our aim is to show that, in the case of the opposite inequality for p(n, all solutions of the equation considered are oscillating for n→∞.

  18. A General Approach to Preferential Formation of Active Fe-Nx Sites in Fe-N/C Electrocatalysts for Efficient Oxygen Reduction Reaction.

    Science.gov (United States)

    Sa, Young Jin; Seo, Dong-Jun; Woo, Jinwoo; Lim, Jung Tae; Cheon, Jae Yeong; Yang, Seung Yong; Lee, Jae Myeong; Kang, Dongwoo; Shin, Tae Joo; Shin, Hyeon Suk; Jeong, Hu Young; Kim, Chul Sung; Kim, Min Gyu; Kim, Tae-Young; Joo, Sang Hoon

    2016-11-16

    Iron-nitrogen on carbon (Fe-N/C) catalysts have emerged as promising nonprecious metal catalysts (NPMCs) for oxygen reduction reaction (ORR) in energy conversion and storage devices. It has been widely suggested that an active site structure for Fe-N/C catalysts contains Fe-Nx coordination. However, the preparation of high-performance Fe-N/C catalysts mostly involves a high-temperature pyrolysis step, which generates not only catalytically active Fe-Nx sites, but also less active large iron-based particles. Herein, we report a general "silica-protective-layer-assisted" approach that can preferentially generate the catalytically active Fe-Nx sites in Fe-N/C catalysts while suppressing the formation of large Fe-based particles. The catalyst preparation consisted of an adsorption of iron porphyrin precursor on carbon nanotube (CNT), silica layer overcoating, high-temperature pyrolysis, and silica layer etching, which yielded CNTs coated with thin layer of porphyrinic carbon (CNT/PC) catalysts. Temperature-controlled in situ X-ray absorption spectroscopy during the preparation of CNT/PC catalyst revealed the coordination of silica layer to stabilize the Fe-N4 sites. The CNT/PC catalyst contained higher density of active Fe-Nx sites compared to the CNT/PC prepared without silica coating. The CNT/PC showed very high ORR activity and excellent stability in alkaline media. Importantly, an alkaline anion exchange membrane fuel cell (AEMFC) with a CNT/PC-based cathode exhibited record high current and power densities among NPMC-based AEMFCs. In addition, a CNT/PC-based cathode exhibited a high volumetric current density of 320 A cm(-3) in acidic proton exchange membrane fuel cell. We further demonstrated the generality of this synthetic strategy to other carbon supports.

  19. a-SiNx:H-based ultra-low power resistive random access memory with tunable Si dangling bond conduction paths.

    Science.gov (United States)

    Jiang, Xiaofan; Ma, Zhongyuan; Xu, Jun; Chen, Kunji; Xu, Ling; Li, Wei; Huang, Xinfan; Feng, Duan

    2015-10-28

    The realization of ultra-low power Si-based resistive switching memory technology will be a milestone in the development of next generation non-volatile memory. Here we show that a high performance and ultra-low power resistive random access memory (RRAM) based on an Al/a-SiNx:H/p(+)-Si structure can be achieved by tuning the Si dangling bond conduction paths. We reveal the intrinsic relationship between the Si dangling bonds and the N/Si ratio x for the a-SiNx:H films, which ensures that the programming current can be reduced to less than 1 μA by increasing the value of x. Theoretically calculated current-voltage (I-V) curves combined with the temperature dependence of the I-V characteristics confirm that, for the low-resistance state (LRS), the Si dangling bond conduction paths obey the trap-assisted tunneling model. In the high-resistance state (HRS), conduction is dominated by either hopping or Poole-Frenkel (P-F) processes. Our introduction of hydrogen in the a-SiNx:H layer provides a new way to control the Si dangling bond conduction paths, and thus opens up a research field for ultra-low power Si-based RRAM.

  20. High-performance resin-bonded magnets produced from zinc metal-coated Sm2(Fe0.9Co0.1)17Nx fine powders

    Science.gov (United States)

    Noguchi, K.; Machida, K.; Yamamoto, K.; Nishimura, M.; Adachi, G.

    1999-09-01

    Fine powders of Sm2(Fe0.9Co0.1)17Nx (x=˜3) with particle sizes (d) around 1 μm as coated with zinc metal produced via the photodecomposition of diethylzinc [Zn(C2H5)2], which still provided high remanence (Br) and coercivity (Hcj) values of ˜1.43 T and ˜0.85 MAm-1, were molded to compression-type resin bonded Zn/Sm2(Fe0.9Co0.1)17Nx magnets with density values of ˜6.33 g cm-3. By optimizing the preparation conditions such as grinding, surface coating, and molding for them, the highest maximum energy product of (BH)max=186 kJm-3 for Hcj=0.73 MAm-1 was recorded among all kinds of the Sm-Fe-N based magnets reported to date. Furthermore, the excellent aging behavior of the bonded Zn/Sm2(Fe0.9Co0.1)17Nx magnets was observed after standing in air at ˜393 K and the thermal coefficient for permanent magnet was evaluated to be α(Br)=-0.04% K-1.

  1. Study of interface barrier of SiNx/GaN interface for nitrogen-polar GaN based high electron mobility transistors

    Science.gov (United States)

    Nidhi, Rajan, Siddharth; Keller, Stacia; Wu, Feng; DenBaars, Steven P.; Speck, James S.; Mishra, Umesh K.

    2008-06-01

    The SiNx/GaN interface barrier height for N-polar GaN based metal-insulator-semiconductor high electron mobility transistors (MISHEMTs) was investigated. N-polar SiNx/GaN/AlGaN/GaN MISHEMT structures with different GaN cap thicknesses were grown by metal-organic chemical vapor deposition. The properties of the SiNx/GaN interface are of critical importance to device operation and modeling in these devices. An analytical expression for the pinch-off voltage of the HEMT was obtained, and capacitance-voltage (C-V) measurements with different Schottky metals were used to extract the barrier height. The Fermi level at the interface was found to be pinned at approximately 1 eV with respect to GaN conduction band edge, irrespective of the work function of the gate metal. Hall measurements of the two-dimensional electron gas density were found to corroborate the predicted interface barrier height. An approximate value for interface charge causing this pinning was calculated to be 4.5×1012 cm-2.

  2. Estimation of the Binding Free Energy of AC1NX476 to HIV-1 Protease Wild Type and Mutations Using Free Energy Perturbation Method.

    Science.gov (United States)

    Ngo, Son Tung; Mai, Binh Khanh; Hiep, Dinh Minh; Li, Mai Suan

    2015-10-01

    The binding mechanism of AC1NX476 to HIV-1 protease wild type and mutations was studied by the docking and molecular dynamics simulations. The binding free energy was calculated using the double-annihilation binding free energy method. It is shown that the binding affinity of AC1NX476 to wild type is higher than not only ritonavir but also darunavir, making AC1NX476 become attractive candidate for HIV treatment. Our theoretical results are in excellent agreement with the experimental data as the correlation coefficient between calculated and experimentally measured binding free energies R = 0.993. Residues Asp25-A, Asp29-A, Asp30-A, Ile47-A, Gly48-A, and Val50-A from chain A, and Asp25-B from chain B play a crucial role in the ligand binding. The mutations were found to reduce the receptor-ligand interaction by widening the binding cavity, and the binding propensity is mainly driven by the van der Waals interaction. Our finding may be useful for designing potential drugs to combat with HIV.

  3. a-SiNx:H-based ultra-low power resistive random access memory with tunable Si dangling bond conduction paths

    Science.gov (United States)

    Jiang, Xiaofan; Ma, Zhongyuan; Xu, Jun; Chen, Kunji; Xu, Ling; Li, Wei; Huang, Xinfan; Feng, Duan

    2015-10-01

    The realization of ultra-low power Si-based resistive switching memory technology will be a milestone in the development of next generation non-volatile memory. Here we show that a high performance and ultra-low power resistive random access memory (RRAM) based on an Al/a-SiNx:H/p+-Si structure can be achieved by tuning the Si dangling bond conduction paths. We reveal the intrinsic relationship between the Si dangling bonds and the N/Si ratio x for the a-SiNx:H films, which ensures that the programming current can be reduced to less than 1 μA by increasing the value of x. Theoretically calculated current-voltage (I-V ) curves combined with the temperature dependence of the I-V characteristics confirm that, for the low-resistance state (LRS), the Si dangling bond conduction paths obey the trap-assisted tunneling model. In the high-resistance state (HRS), conduction is dominated by either hopping or Poole-Frenkel (P-F) processes. Our introduction of hydrogen in the a-SiNx:H layer provides a new way to control the Si dangling bond conduction paths, and thus opens up a research field for ultra-low power Si-based RRAM.

  4. Ion mobility, conductivity, structure, and phase transitions in K0.7M0.3SbF4 compounds with M=Rb, NH4

    Science.gov (United States)

    Kavun, V. Ya.; Gerasimenko, A. V.; Uvarov, N. F.; Polyantsev, M. M.; Zemnukhova, L. A.

    2016-09-01

    Ion mobility, phase transitions, structure, and conductivity in the K0.7M0.3SbF4 (M=Rb, NH4) compounds were studied by NMR spectroscopy, DSC, X-ray, and conductivity measurements. The predominant form in the ion motions resulting from the phase transition of high modification was diffusion of fluoride and ammonium ions above 450 K. The high-temperature phases of K0.7M0.3SbF4 (M=Rb, NH4) are superionic, while their conductivity attains the values of ~10-2-10-4 S/cm at 450-500 K. The structures of α- and β-modifications of the K0.7Rb0.3SbF4 are monoclinic (space group P21/m). The main structural units in them are statistically substituting each other K+ and Rb+ cations and complex 1[ SbF4 ]- ∞ anions linked into zigzag-like chains by bridge fluorine atoms. The nearest surrounding of each antimony atom contains five fluorine atoms, so that the antimony coordination polyhedron can be described, taking into account the lone electron pair, as a distorted SbF5E octahedron (ψ-octahedron).

  5. The evolution of Brown-York quasilocal energy as due to evolution of Lovelock gravity in a system of M0-branes

    CERN Document Server

    Sepehri, Alireza; Capozziello, Salvatore; Ali, Ahmed Farag; Pradhan, Anirudh

    2016-01-01

    Recently, it has been suggested in [JHEP 12(2015)003] that the Brown-York mechanism can be used to measure the quasilocal energy in Lovelock gravity. We have used this method in a system of M0-branes and show that the Brown-York energy evolves in the process of birth and growth of Lovelock gravity. This can help us to predict phenomenological events which are emerged as due to dynamical structure of Lovelock gravity in our universe. In this model, first, M0-branes join to each other and form an M3-brane and an anti-M3-branes connected by an M2-brane. This system is named BIon. Universes and anti-universes live on M3-branes and M2 plays the role of wormhole between them. By passing time, M2 dissolves in M3's and nonlinear massive gravities like Lovelock massive gravity emerges and grows. By closing M3-branes, BIon evolves and wormhole between branes makes a transition to black hole. During this stage, Brown-York energy increases and shrinks to large values at the colliding points of branes. By approaching M3-b...

  6. Synthesis, characterization and electrochemical studies of LiNi0.8M0.2O2 cathode material for rechargeable lithium batteries

    Indian Academy of Sciences (India)

    R Sathiyamoorthi; P Manisankar; P Shakkthivel; Mu Sang Lee; T Vasudevan

    2008-06-01

    LiNiO2 and substituted nickel oxides, LiNi0.8M0.2O2 and LiCo0.8M0.2O2 (M = Mg2+, Ca2+, Ba2+), have been synthesized using simple solid state technique and used as cathode active materials for lithium rechargeable cells. Physical properties of the synthesized products are discussed in the structural (XRD, TEM, SEM with EDAX) and spectroscopic (FTIR) measurements. XRD results show that the compounds are similar to LiNiO2 in structure. TEM and SEM analyses were used to examine the particle size, nature and morphological aspects of the synthesized oxides. The composition of the materials was explored by EDAX analysis. Electrochemical studies were carried out in the range 3–4.5 V (vs Li metal) using 1 M LiBF4 in ethylene carbonate/dimethyl carbonate as the electrolyte. The doping involving 20% Mg resulted in a discharge capacity of 185 mAhg-1 at 0.1 mA/cm2 and remained stable even after 25 cycles. Discharge capacity retention for Mg doped lithium nickelate at 25th cycle was noted to be nearly 7% higher than for the undoped material.

  7. CT characteristics and pathological implications of early stage (T1N0M0) lung adenocarcinoma with pure ground-glass opacity

    Energy Technology Data Exchange (ETDEWEB)

    Jin, Xin; Zhao, Shao-hong; Wu, Jian; Wu, Chong-chong; Chang, Rui-ping; Ju, Hai-yue [Chinese PLA General Hospital, Department of Radiology, Beijing (China); Gao, Jie; Wang, Dian-jun [Chinese PLA General Hospital, Department of Pathology, Beijing (China)

    2015-09-15

    To analyze the CT characteristics and pathological classification of early lung adenocarcinoma (T1N0M0) with pure ground-glass opacity (pGGO). Ninety-four lesions with pGGO on CT in 88 patients with T1N0M0 lung adenocarcinoma were selected from January 2010 to December 2012. All lesions were confirmed by pathology. CT appearances were analyzed including lesion location, size, density, uniformity, shape, margin, tumour-lung interface, internal and surrounding malignant signs. Lesion size and density were compared using analysis of variance, lesion size also assessed using ROC curves. Gender of patients, lesion location and CT appearances were compared using χ2-test. There were no significant differences in gender, lesion location and density with histological invasiveness (P > 0.05). The ROC curve showed that the possibility of invasive lesion was 88.73 % when diameter of lesion was more than 10.5 mm. There was a significant difference between lesion uniformity and histological invasiveness (P = 0.01). There were significant differences in margin, tumour-lung interface, air bronchogram with histological invasiveness (P = 0.02,P = 0.00,P = 0.048). The correlation index of lesion size and uniformity was r = 0.45 (P = 0.00). The lesion size and uniformity, tumour-lung interface and the air bronchogram can help predict invasive extent of early stage lung adenocarcinoma with pGGO. (orig.)

  8. Si/SiO2和Si/SiNx/SiO2超晶格的能带结构%Band structure of Si/SiO2 and Si/SiNx/SiO2 superlattices

    Institute of Scientific and Technical Information of China (English)

    魏屹; 董成军; 徐明

    2010-01-01

    利用Kronig-Penney模型从理论上计算了Si/SiO2和Si/Si/SiNx/SiO2多层膜结构中量子阱的能带结构,进一步分析了各亚层薄膜厚度对能带结构和有效质量的影响.结果发现,适当减少亚层的厚度都能使得纳米Si薄膜的带隙发生明显宽化.在Si/SiO2超晶格中,Si量子阱层带隙能量随着Si层厚度的变化符合EPLL(eV)=1.6+0.7/d2关系,与我们的计算结果十分吻合.在Si/SiNdSiO2超晶格系统中,可以通过控制各亚层厚度,尤其是Si和SiNx层厚度,均能够有效地控制发光.

  9. Production of Welan Gum by Alcaligenes sp.NX-3 with Fed-batch Fermentation%Alcaligenes sp.NX-3产威兰胶的补料分批发酵工艺研究

    Institute of Scientific and Technical Information of China (English)

    李会; 李莎; 冯小海; 汪芙蓉; 徐虹

    2009-01-01

    在7.5 L发酵罐上考察了Alcaligenes sp.NX-3产威兰胶的发酵工艺.选用葡萄糖为碳源,通过分析比较不同初糖浓度下的细胞比生长速率和产物比合成速率,进一步研究了不同补料方式对产胶的影响.结果表明,采用分批补糖发酵工艺,威兰胶产量较分批发酵提高了13.6%,而且有效地缩短了发酵周期.在50 L发酵罐上进行补料分批发酵放大实验,威兰胶产量高达27.0 g/L,葡萄糖转化率由初始的44%提高到54%.

  10. 基于NX8.5的打纬摇轴载荷及模态分析%Analysis of Beating-up Rocker Shaft Load and Modal Based on NX8.5

    Institute of Scientific and Technical Information of China (English)

    杨剑宇

    2014-01-01

    本文利用 UGNX8.5软件对剑杆织机共轭凸轮打纬机构中的打纬摇轴进行了载荷及模态分析,并通过数据分析,得到了打纬摇轴各阶的固有频率和振型,以及最大应力和最大应变值,从而提出了打纬摇轴设计的改进措施,为提高织造过程中的打纬质量和合理设计打纬摇轴提供了理论依据。%By using software NX8.5, this paper analyzes the load and modal of the beating-up rocker shaft in the beating-up mechanism of conjugate cam of rapier loom. Based on the data analysis, the natural frequency and vibration mode in beating-up process, and the maximum stress and maximum strain values have been ob-tained. Therefore, measures of improving the beating-up rocker shaft design have been put forward, which provides theoretical basis for the improvement of beating-up quality in weaving process and the proper design of beating-up rocker shaft.

  11. Magnetic domain structures of 1:12 type nitrides NdFe10.5Mo1.5Nx

    Institute of Scientific and Technical Information of China (English)

    徐海; 韩宝善; 杨金波; 杨应昌

    1999-01-01

    The magnetic domain structures of the 1:12 type alloy NdFe10.5Mo1.5 and its nitride were firstly investigated by using magnetic force microscope (MFM). A complicated corrugation and spike magnetic domain structure was observed in NdFe10.5Mo1.5 alloy. Upon nitrogenation, a stripe domain structure occurs due to the dramatic increase of the uniaxial magneto-crystaUine anisotropy K1 induced by nitrogenation. Based on the basic domain theories, the origin of these domain patterns was analyzed and the reason of domain structure transition is explained quantitatively. The domain wall energy γ, exchange constant A and single-domain particle size Dc of NdFe10.5Mo1.5and NdFe10.5-Mo1.5Nx were calculated in combination with the measured domain width w and magnetic parameters. A comparison of magnetic parameters with those of SmCo5 and Nd2Fe14B permanent materials was also made.

  12. Analysis of carbon metabolism and improvement of gamma-polyglutamic acid production from Bacillus subtilis NX-2.

    Science.gov (United States)

    Yao, Jun; Xu, Hong; Shi, Ningning; Cao, Xin; Feng, Xiaohai; Li, Sha; Ouyang, Pingkai

    2010-04-01

    Bacillus subtilis NX-2 produces gamma-polyglutamic acid (gamma-PGA) when using glucose and L-glutamate as carbon sources. The conversion of carbon sources into gamma-PGA was analyzed with the (13)C-NMR method after enriching the media with (13)C-labeled glucose. The results showed that the percentage of gamma-PGA monomers derived from glucose was relatively low, approximately 6% and 9%, respectively, with an initial glucose concentration of 30 and 40 g L(-1). It was concluded that glucose was utilized mainly as the growth-limiting substrate for cell growth and supplied the required energy during gamma-PGA biosynthesis, while L-glutamate was preferred as the main substrate for gamma-PGA formation. To achieve an efficient conversion of L-glutamate and enhance the gamma-PGA production, a fed-batch culture was proposed by feeding of glucose. By this method, supplied L-glutamate (40 g L(-1)) was completely depleted, and gamma-PGA yield was attained 42 g L(-1).

  13. Defect Engineering toward Atomic Co-Nx -C in Hierarchical Graphene for Rechargeable Flexible Solid Zn-Air Batteries.

    Science.gov (United States)

    Tang, Cheng; Wang, Bin; Wang, Hao-Fan; Zhang, Qiang

    2017-08-07

    Rechargeable flexible solid Zn-air battery, with a high theoretical energy density of 1086 Wh kg(-1) , is among the most attractive energy technologies for future flexible and wearable electronics; nevertheless, the practical application is greatly hindered by the sluggish oxygen reduction reaction/oxygen evolution reaction (ORR/OER) kinetics on the air electrode. Precious metal-free functionalized carbon materials are widely demonstrated as the most promising candidates, while it still lacks effective synthetic methodology to controllably synthesize carbocatalysts with targeted active sites. This work demonstrates the direct utilization of the intrinsic structural defects in nanocarbon to generate atomically dispersed Co-Nx -C active sites via defect engineering. As-fabricated Co/N/O tri-doped graphene catalysts with highly active sites and hierarchical porous scaffolds exhibit superior ORR/OER bifunctional activities and impressive applications in rechargeable Zn-air batteries. Specifically, when integrated into a rechargeable and flexible solid Zn-air battery, a high open-circuit voltage of 1.44 V, a stable discharge voltage of 1.19 V, and a high energy efficiency of 63% at 1.0 mA cm(-2) are achieved even under bending. The defect engineering strategy provides a new concept and effective methodology for the full utilization of nanocarbon materials with various structural features and further development of advanced energy materials. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  14. Preparation and electromagnetic wave absorption properties of Sm2O3/α-Fe/Sm2Fe17Nx composites

    Science.gov (United States)

    Ye, Jinwen; Liu, Ying; Zhang, Jiao; Chen, Xianfu; Yao, Mingying

    2013-06-01

    Sm2O3/α-Fe/Sm2Fe17Nx composites were prepared in situ by hydrogenation-disproportionation-oxygen-desorption-recombination and nitrogen process, and their electromagnetic wave absorption properties were measured in the frequency range of 0.5-18 GHz. The result showed that saturation magnetization and coercivity of as-prepared powder with 25.3 wt% Sm2O3, 64.4 wt% α-Fe and 10.3 wt% Sm2Fe17N3 were 134.57 emu/g and 654.5 G, respectively. The dielectric constant of composites was low over the frequency range of 0.5-18 GHz, and their resonance frequencies were at a high frequency range. The resin composite of Sm2O3/α-Fe/Sm2Fe17N3 exhibited effective electromagnetic wave absorption (RL≤20 dB) in a frequency range 3-9 GHz, for absorber thickness ranging from 3 to 8 mm, respectively. A minimum reflection loss of -53 dB from the samples was observed at 7 GHz with an absorber thickness of 3.59 mm.

  15. Improvement of poly-γ-glutamic acid biosynthesis in a moving bed biofilm reactor by Bacillus subtilis NX-2.

    Science.gov (United States)

    Jiang, Yongxiang; Tang, Bao; Xu, Zongqi; Liu, Kun; Xu, Zheng; Feng, Xiaohai; Xu, Hong

    2016-10-01

    The production of poly-γ-glutamic acid (γ-PGA) by Bacillus subtilis NX-2 using a moving bed biofilm reactor (MBBR) system was tested for the first time in this study. Polypropylene TL-2 was chosen as a suitable carrier, and γ-PGA concentration of 42.7±0.86g/L and productivity of 0.59±0.06g/(Lh) were obtained in batch fermentation. After application of the strategy of dissolved oxygen (DO)-stat feeding, higher γ-PGA concentration and productivity were achieved than with glucose feedback feeding. Finally, the repeated fed-batch cultures implemented in the MBBR system showed high stability, and the maximal γ-PGA concentration and productivity of 74.2g/L and 1.24g/(Lh) were achieved, respectively. In addition, the promotion of oxygen transfer by an MBBR carrier was well explained by a computational fluid dynamics (CFD) simulation. These results suggest that an MBBR system could be applied to large-scale γ-PGA production.

  16. Origin of the large positive magnetoresistance of G e1 -xM nx granular thin films

    Science.gov (United States)

    Wakabayashi, Yuki K.; Akiyama, Ryota; Takeda, Yukiharu; Horio, Masafumi; Shibata, Goro; Sakamoto, Shoya; Ban, Yoshisuke; Saitoh, Yuji; Yamagami, Hiroshi; Fujimori, Atsushi; Tanaka, Masaaki; Ohya, Shinobu

    2017-01-01

    G e1 -xM nx (GeMn) granular thin films are a unique and promising material for spintronic applications owing to their large positive magnetoresistance (MR). Previous studies of GeMn have suggested that the large MR is related to the nanospinodal decomposition of GeMn into Mn-rich ferromagnetic nanoparticles and a Mn-poor paramagnetic matrix. However, the microscopic origin of the MR has not yet been clarified. Here, we develop a method to separately investigate the magnetic properties of the nanoparticles and the matrix, utilizing the extremely high sensitivity of x-ray magnetic circular dichroism (XMCD) to the local magnetic state of each atom. We find that the MR ratio is proportional to the product of the magnetizations originating from the nanoparticles and the matrix. This result indicates that the spin-polarized holes in the nanoparticles penetrate into the matrix and that these holes undergo first order magnetic scattering by the paramagnetic Mn atoms in the matrix, which induces the large MR.

  17. Um negócio da China: o discurso do guānxì nas articulações no âmbito organizacional

    Directory of Open Access Journals (Sweden)

    Osíris Luís da Cunha Fernandes

    Full Text Available Este estudo explora o guānxì como discurso organizacional vigente na cultura de negócios nas organizações chinesas a partir da lógica da equivalência e da lógica da diferença propostas por Ernesto Laclau e Chantal Mouffe. O guānxì consiste em um relacionamento interpessoal e na criação de conhecimento colaborativo que envolve um saber tácito, orientado para o futuro, complexo que opera em contexto específico. Em uma perspectiva pós-estruturalista aplicada às organizações, utilizamos a análise de discurso como método que permite pôr em prática o papel da linguagem na condição de eixo de compreensão de processos sociais, como acontece com o guānxì. Analisamos 3 entrevistas em profundidade realizadas com chief executive officers (CEOs chineses e 32 reportagens relacionadas à prática do guānxì em organizações do setor terciário, publicadas em 2 dos maiores diários digitais da China. Com isso, nosso objetivo foi identificar a forma como esse fenômeno tem sido apropriado como discurso no âmbito organizacional a partir da lógica da equivalência e da lógica da diferença. Constatamos que as organizações chinesas utilizam o guānxì para obterem acesso preferencial a atores estratégicos que têm informações e recursos demandados nos processos negociais, com vista a obterem vantagens competitivas. Por outro lado, o sucesso dos negócios envolvendo essas organizações depende de uma identificação mútua entre seus líderes, baseada na confiança e credibilidade estabelecidas nas articulações.

  18. Magnetic structure of Gd5Si2Ge2 and Gd5Si2Ge1.9M0.1 (M = Ga, Cu).

    Science.gov (United States)

    Palacios, E; Rodríguez-Velamazán, J A; Wang, G F; Burriel, R; Cuello, G; Rodríguez-Carvajal, J

    2010-11-10

    Powder x-ray diffraction patterns of the doped compounds Gd(5)Si(2)Ge(1.9)M(0.1) (M = Ga, Cu) show the same crystal structure, orthorhombic Gd(5)Si(4)-type, in the ferromagnetic and paramagnetic phases. This is different from Gd(5)Si(2)Ge(2), whose paramagnetic phase is monoclinic. The magnetic structure at low temperature, solved from diffraction experiments with hot neutrons, is the same in all the three compounds, collinear ferromagnetic with moments along the crystal b-axis, or F(y)F(By) according to Bertaut's notation. These results, combined with those of heat capacity and magnetocaloric effect, indicate, similarly to Gd(5)Si(4), a second-order, purely magnetic, transition in the doped compounds explaining the absence of hysteresis.

  19. Born-Infeld extension of Lovelock brane gravity in the system of M0-branes and its application for the emergence of Pauli exclusion principle in BIonic superconductors

    Science.gov (United States)

    Sepehri, Alireza

    2016-07-01

    Recently, some authors (Cruz and Rojas, 2013 [1]) have constructed a Born-Infeld type action which may be written in terms of the Lovelock brane Lagrangians for a given dimension p. We reconsider their model in M-theory and study the process of birth and growth of nonlinear spinor and bosonic gravity during the construction of Mp-branes. Then, by application of this idea to BIonic system, we construct a BIonic superconductor in the background of nonlinear gravity. In this model, first, M0-branes link to each other and build an M5-brane and an anti-M5-brane connected by an M2-brane. M0-branes are zero dimensional objects that only scalars are attached to them. By constructing higher dimensional branes from M0-branes, gauge fields are produced. Also, if M0-branes don't link to each other completely, the symmetry of system is broken and fermions are created. The curvature produced by fermions has the opposite sign the curvature produced by gauge fields. Fermions on M5-branes and M2 plays the role of bridge between them. By passing time, M2 dissolves in M5's and nonlinear bosonic and spinor gravities are produced. By closing M5-branes towards each other, coupling of two identical fermions on two branes to each other causes that the square mass of their system becomes negative and some tachyonic states are created. For removing these tachyons, M5-branes compact, the sign of gravity between branes reverses, anti-gravity is produced which causes that branes and identical fermions get away from each other. This is the reason for the emergence of Pauli exclusion principle in Bionic system. Also, the spinor gravity vanishes and its energy builds a new M2 between M5-branes. We obtain the resistivity in this system and find that its value decreases by closing M5 branes to each other and shrinks to zero at colliding point of branes. This idea has different applications. For example, in cosmology, universes are located on M5-branes and M2-brane has the role of bridge between

  20. Born–Infeld extension of Lovelock brane gravity in the system of M0-branes and its application for the emergence of Pauli exclusion principle in BIonic superconductors

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, Alireza, E-mail: alireza.sepehri@uk.ac.ir [Faculty of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), P.O. Box 55134-441, Maragha (Iran, Islamic Republic of)

    2016-07-01

    Recently, some authors (Cruz and Rojas, 2013 [1]) have constructed a Born–Infeld type action which may be written in terms of the Lovelock brane Lagrangians for a given dimension p. We reconsider their model in M-theory and study the process of birth and growth of nonlinear spinor and bosonic gravity during the construction of Mp-branes. Then, by application of this idea to BIonic system, we construct a BIonic superconductor in the background of nonlinear gravity. In this model, first, M0-branes link to each other and build an M5-brane and an anti-M5-brane connected by an M2-brane. M0-branes are zero dimensional objects that only scalars are attached to them. By constructing higher dimensional branes from M0-branes, gauge fields are produced. Also, if M0-branes don't link to each other completely, the symmetry of system is broken and fermions are created. The curvature produced by fermions has the opposite sign the curvature produced by gauge fields. Fermions on M5-branes and M2 plays the role of bridge between them. By passing time, M2 dissolves in M5's and nonlinear bosonic and spinor gravities are produced. By closing M5-branes towards each other, coupling of two identical fermions on two branes to each other causes that the square mass of their system becomes negative and some tachyonic states are created. For removing these tachyons, M5-branes compact, the sign of gravity between branes reverses, anti-gravity is produced which causes that branes and identical fermions get away from each other. This is the reason for the emergence of Pauli exclusion principle in Bionic system. Also, the spinor gravity vanishes and its energy builds a new M2 between M5-branes. We obtain the resistivity in this system and find that its value decreases by closing M5 branes to each other and shrinks to zero at colliding point of branes. This idea has different applications. For example, in cosmology, universes are located on M5-branes and M2-brane has the role of bridge

  1. Coping with uncertainty: T1a,bN0M0 HER2-positive breast cancer, do we have a treatment threshold?

    LENUS (Irish Health Repository)

    Kelly, C M

    2012-02-01

    BACKGROUND: Recent retrospective studies have suggested that patients with T1a,bN0M0 human epidermal growth factor receptor 2 (HER2)-positive breast cancer are at a higher risk for recurrence and might benefit from adjuvant trastuzumab. The absolute benefits associated with treating this subgroup are uncertain. Design: We reviewed recent studies examining the prognostic value of HER2 in patients with node-negative T1a,b HER2-positive breast cancer. We calculated the number needed to treat (NNT) using baseline risk estimates for untreated T1a,bN0M0 breast cancer and the number needed to harm (NNH) using the incidence of cardiac events in each of the adjuvant trastuzumab clinical trials. RESULTS: Several studies were identified, each with limitations inherent to retrospective database analyses: small cohort sizes, lack of systematic HER2 testing in older specimens, variations in the use of adjuvant therapy and definitions of study end points, and lack of information relating to comorbidities. The 5-year disease-free survival in the pre-trastuzumab era ranged from 77% to 95%. Comparisons between small HER2 -positive and small HER2 -negative cancers showed numerically worse outcome for the HER2-positive cohort in some but not all studies. In many instances, the NNH was larger (26-250) than the NNT (13-35); however, in a subset of patients, the NNH was lower (6) than the NNT (13-35). CONCLUSIONS: Better prediction tools to estimate more precisely the risk for death due to comorbid illness versus breast cancer are needed. In some patients, the risks of therapy could outweigh the benefits. Treatment selection for T1a,bN0 HER2-positive cancers remains in the transition area between evidence- and subjective judgment-based medicine.

  2. Locoregional treatment and overall survival of men with T1a,b,cN0M0 breast cancer: A population-based study.

    Science.gov (United States)

    Leone, José Pablo; Leone, Julieta; Zwenger, Ariel Osvaldo; Iturbe, Julián; Leone, Bernardo Amadeo; Vallejo, Carlos Teodoro

    2017-01-01

    Male breast cancer (MaBC) is an understudied disease; information about locoregional treatment and outcomes in patients with early stage is unknown. We aimed to analyse patient characteristics, locoregional treatment and overall survival (OS) of T1a,b,cN0M0 male breast cancer. We evaluated men with T1a,b,cN0M0 breast cancer reported to Surveillance, Epidemiology, and End Results program from 1988 to 2012. Univariate and multivariate analyses were performed to determine the effect of each variable on OS. We included 1263 patients. Median age was 66 years (range 27-103). Median follow-up was 62 months (range 1-294). OS at 5 and 10 years were 85.1% and 66.5%, respectively. Distribution according to tumour sub-stage was: T1a 6.5%, T1b 20.7% and T1c 72.8%. Mastectomy was performed in >74% of patients of each tumour size group and overall 44.1% had >5 lymph nodes examined (LNE). Univariate analysis showed that patients with T1c, no surgery and 0 LNE had worse prognosis. In multivariate analysis, older age (hazard ratio [HR] 11.09), grade 3/4 tumours (HR 1.7), no surgery (HR 3.3), 0 LNE (HR 5.1) and unmarried patients (HR 1.7) had significantly shorter OS. There were no differences in OS between breast conservation versus mastectomy and 1-5 LNE versus > 5 LNE. Men with early breast cancer have a favourable OS. However, older age, higher grade, no breast surgery, no LNE and unmarried status emerged as poor prognostic characteristics. Efforts to decrease the high rates of mastectomy and extensive LNE should be taken given similar OS observed with breast conservation and 1-5 LNE, respectively. Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. 108例Tis~1N0M0期中低位直肠癌经肛门局部切除的临床评价%Clinical Evaluation of Transanal Local Excision in 108 Cases with Tis~1N0M0 Middle and Low Rectal Carcinoma

    Institute of Scientific and Technical Information of China (English)

    彭涛; 杨永江; 赵轶峰; 高建朝; 刘军超; 杨静; Abbas; 李曙光

    2015-01-01

    [目的]探讨Tis~1N0M0期中低位直肠癌经肛门局部切除的合理性.[方法]回顾性分析经肛门局部切除治疗的108例Tis~1N0M0期中低位直肠癌患者的资料.其中TisN0M0 63例,T1N0M0 45例.8例T1期患者接受了术后辅助放疗.[结果]所有患者术后恢复顺利,中位住院时问5d(3~8d).无吻合口漏、直肠狭窄、肛瘘及其他手术并发症.术后肛门括约肌功能良好.5年总生存率为99.07%,Tis~1T1期5年生存率分别为100%和97.78%.5年总复发率为1.85%,Tis、T1期5年复发率分别为0、4.44%.[结论]对Tis~1N0M0期中低位直肠癌患者,经肛门局部切除术既保证了生存率,又兼顾了患者的生存质量,为一种较为理想的术式选择.

  4. Schema.org, la millora de la visualització dels resultats en els cercadors i molt més

    Directory of Open Access Journals (Sweden)

    Sulé Duesa, Andreu

    2015-06-01

    Full Text Available Es descriuen les principals característiques de l'Schema.org, el vocabulari creat el 2011 per Google, Bing, Yahoo! i Yandex per marcar el contingut de les pàgines web i, d'aquesta manera, fer recognoscibles i comprensibles les seves dades als cercadors. Se n'exposa la principal aplicació avui dia, l'enriquiment de la informació que mostren els cercadors de cada pàgina web en els seus resultats, així com els fonaments de la seva estructura (entitats, propietats, valors, etc. i dels formats de codificació que accepta. També s'explica com marcar el contingut d'una pàgina web amb l'Schema.org, qui fa servir avui dia aquest vocabulari, i qui el manté i desenvolupa. Finalment, es valora breument la conveniència o no d'utilitzar l'Schema.org, així com les possibles aplicacions d'aquest vocabulari en la millora de les cerques i dels resultats dels cercadors (més precisió, més funcionalitats, etc., en el desenvolupament del web semàntic i, fins i tot, en el posicionament de les pàgines web en els cercadors (SEO.Se describen las principales características de Schema.org, el vocabulario creado en 2011 por Google, Bing, Yahoo! y Yandex para marcar el contenido de las páginas web y, de este modo, hacer reconocibles y comprensibles sus datos a los buscadores. Se expone su principal aplicación a día de hoy, el enriquecimiento de la información que muestran los buscadores de cada página web en sus resultados, así como los fundamentos de su estructura (entidades, propiedades, valores, etc. y de los formatos de codificación que acepta. También se explica cómo marcar el contenido de una página web con Schema.org, quién usa actualmente este vocabulario, y quién lo mantiene y desarrolla. Por último, se valora brevemente la conveniencia o no de utilizar Schema.org, así como las posibles aplicaciones de este vocabulario para mejorar las búsquedas y los resultados de los buscadores (más precisión, más funcionalidades, etc., en el

  5. 基于LiCo0.8M0.2O2(M=Ni,Zr)薄膜的全固态薄膜锂电池%Physical and Electrochemical Characterization of LiCo0.8M0.2O2 (M=Ni,Zr) Cathode Films for All-solid-state Rechargeable Thin-film Lithium Batteries

    Institute of Scientific and Technical Information of China (English)

    李驰麟; 刘文元; 傅正文

    2006-01-01

    LiCo0.8M0.2O2 (M=Ni,Zr) films were fabricated by radio frequency sputtering deposition combined with conventional annealing methods. The structures of the films were characterized with X-ray diffraction (XRD),Raman spectroscopy and scanning electron microscopy (SEM) techniques. It was shown that the 700 ℃annealed LiCo0.8M0.2O2 has an α-NaFeO2-like layered structure. All-solid-state thin-film batteries (TFBs)were fabricated with these films as the cathode and their electrochemical performances were evaluated. It was found that doping of electrochemically active Ni and inactive Zr has different effects on the structural and electrochemical properties of the LiCoO2 cathode films. Ni doping increases the discharge capacity of the film while Zr doping improves its cycling stability.%用射频磁控溅射结合传统退火的方法制备LiCo0.8M0.2O2(M=Ni,Zr)阴极薄膜X射线衍射、拉曼光谱、扫描电子显微镜等手段表征了不同掺杂的LiCo0.8M0.2O2薄膜.结果显示,700 ℃退火的LiCo0.8M0.2O2薄膜具有类似Q-NaFeO2的层状结构.通过对不同掺杂锂钴氧阴极的全同态薄膜钮电池Li/LiPON/LiCo0.8M0.2O2的电化学性能研究表明,电化学活性元素Ni的掺杂使全固态电池具有更大的放电容量(56 μAh/cm2,μm),而非电化学活性元素Zr的掺杂使全固态电池具有更好的循环稳定性.

  6. Topochemical fluorination of Sr3(M(0.5)Ru(0.5))2O7 (M = Ti, Mn, Fe), n = 2, Ruddlesden-Popper phases.

    Science.gov (United States)

    Romero, Fabio Denis; Bingham, Paul A; Forder, Susan D; Hayward, Michael A

    2013-03-18

    Reaction of the appropriate Sr3(M(0.5)Ru(0.5))2O7 (M = Ti, Mn, Fe), n = 2, Ruddlesden-Popper oxide with CuF2 under flowing oxygen results in formation of the oxide-fluoride phases Sr3(Ti(0.5)Ru(0.5))2O7F2, Sr3(Mn(0.5)Ru(0.5))2O7F2, and Sr3(Fe(0.5)Ru(0.5))2O(5.5)F(3.5) via a topochemical anion insertion/substitution process. Analysis indicates the titanium and manganese phases have Ti(4+), Ru(6+) and Mn(4+), Ru(6+) oxidation state combinations, respectively, while Mössbauer spectra indicate an Fe(3+), Ru(5.5+) combination for the iron phase. Thus, it can be seen that the soft fluorination conditions employed lead to formation of highly oxidized Ru(6+) centers in all three oxide-fluoride phases, while oxidation states of the other transition metal M cations remain unchanged. Fluorination of Sr3(Ti(0.5)Ru(0.5))2O7 to Sr3(Ti(0.5)Ru(0.5))2O7F2 leads to suppression of magnetic order as the fluorinated material approaches metallic behavior. In contrast, fluorination of Sr3(Mn(0.5)Ru(0.5))2O7 and Sr3(Fe(0.5)Ru(0.5))2O7 lifts the magnetic frustration present in the oxide phases, resulting in observation of long-range antiferromagnetic order at low temperature in Sr3(Mn(0.5)Ru(0.5))2O7F2 and Sr3(Fe(0.5)Ru(0.5))2O(5.5)F(3.5). The influence of the topochemical fluorination on the magnetic behavior of the Sr3(M(0.5)Ru(0.5))2O(x)F(y) phases is discussed on the basis of changes to the ruthenium oxidation state and structural distortions.

  7. 临床T1、T2 N0 M0乳腺癌腋窝淋巴结转移状况研究的意义%Metastasis of axillary node in clinical T1 -T2 N0M0 breast cancer patients

    Institute of Scientific and Technical Information of China (English)

    岳军忠; 王磊; 徐青; 王庆庆; 仇爱峰; 马利林

    2009-01-01

    Objective To study the metastasis of lymph node of breast cancer patients in clinical T1-T2 N0 M0 and its clinical significance in (sentinel lymph node biopsy, SLNB). Methods A total of 276 pa-tients of breast cancer were enrolled in the study (T1 N0M0 cases =115 ; T2N0M0 cases = 161 ). The metas-tasis and distribution of axillary node by virtue of the location of primary tumor, ages and pathologic status were analyzed. Results The metastasis rate of axillary node in T1 N0M0 patients was less than T2 N0 M0 (P =0.027), while that in the central and lower outer quadrant's was higher than in other' s parts(P =0.004).When the tumor located in outer quadrant, the axillary node metastasis rate of Berg I was highest in the cen-tral, outer and inner quadrant(P =0.000). But the metastasis rate of Berg Ⅲ was lowest in the three quad-rants (P = 0. 000). For the pathologic status, the metastasis rate of invasive carcinoma-not otherwise speci-fied(NOS) was higher than early breast carcinoma and other pathologic categories (P =0.000). More than 2 groups axillary node metastasis was found in 6 of 9 patients with carcinoma simplex. The 90 cases with axilla-ry node metastasis were analyzed by age. Axillary node was easier for metastasis in those cases aged above 50years than those below 50 years(68.9% vs 31.1% )(P =0. 000). Two eases with skip metastasis were in T2 No Mo (invasive ductal carcinoma disease = 1, carcinoma simplex disease = 1 ). Conclusion The distri-bution of the metastasis of lymph node in clinical T1 ,T2 N0M0 breast cancer plays an important role in SLNB and formulating reasonable treatment protocols.%目的 探讨临床T1、T2、 N0、M0.乳腺癌腋窝淋巴结转移状况及临床意义.方法 结合原发肿瘤位置、年龄、病理等,分析了276例临床T1、T2 N0M0乳腺癌患者腋窝淋巴结转移情况及意义.结果 临床T1 N0M0.腋淋巴结转移率低于T2 N0M0乳腺癌患者(P=0.027),乳腺中央区与外下象限乳腺癌发生腋淋巴结

  8. Effect of SiNx diffusion barrier thickness on the structural properties and photocatalytic activity of TiO2 films obtained by sol–gel dip coating and reactive magnetron sputtering

    Directory of Open Access Journals (Sweden)

    Mohamed Nawfal Ghazzal

    2015-10-01

    Full Text Available We investigate the effect of the thickness of the silicon nitride (SiNx diffusion barrier on the structural and photocatalytic efficiency of TiO2 films obtained with different processes. We show that the structural and photocatalytic efficiency of TiO2 films produced using soft chemistry (sol–gel and physical methods (reactive sputtering are affected differentially by the intercalating SiNx diffusion barrier. Increasing the thickness of the SiNx diffusion barrier induced a gradual decrease of the crystallite size of TiO2 films obtained by the sol–gel process. However, TiO2 obtained using the reactive sputtering method showed no dependence on the thickness of the SiNx barrier diffusion. The SiNx barrier diffusion showed a beneficial effect on the photocatalytic efficiency of TiO2 films regardless of the synthesis method used. The proposed mechanism leading to the improvement in the photocatalytic efficiency of the TiO2 films obtained by each process was discussed.

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

    Institute of Scientific and Technical Information of China (English)

    钟依均; 罗孟飞

    2002-01-01

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

  10. Tests of stellar model atmospheres by optical interferometry III: NPOI and VINCI interferometry of the M0 giant gamma Sge covering 0.5 - 2.2 microns

    CERN Document Server

    Wittkowski, M; Aufdenberg, J P; Roccatagliata, V

    2006-01-01

    Aims: We present a comparison of the visual and NIR intensity profile of the M0 giant gamma Sagittae to plane-parallel ATLAS 9 as well as to plane-parallel & spherical PHOENIX model atmospheres. Methods: We use previously described visual interferometric data obtained with the NPOI in July 2000. We apply the recently developed technique of coherent integration, and thereby obtain visibility data of more spectral channels and with higher precision than before. In addition, we employ new measurements of the K-band diameter of gamma Sagittae obtained with the instrument VINCI at the VLTI in 2002. Results: The spherical PHOENIX model leads to a precise definition of the Rosseland angular diameter and a consistent high-precision diameter value for our NPOI and VLTI/VINCI data sets of Theta_Ross=6.06 pm 0.02 mas, with the Hipparcos parallax corresponding to R_Ross=55 pm 4 R_sun, and with the bolometric flux corresponding to an effective temperature T_eff=3805 pm 55 K. Our visual visibility data close to the fir...

  11. Improvement of Hydrogen Storage Properties of La0.6M0.4Ni4.8Mn0.2 Alloys

    Institute of Scientific and Technical Information of China (English)

    Ping DU; Wei CAO; Manqi LU; Jiangping CHEN; Ke YANG

    2004-01-01

    Investigation has been carried out to find the effects of Nd substitution and Cu addition on the hydrogen storage properties of AB5-type alloy with a multicomponent La0.6M0.4Ni4.8Mn0.2 (M=Y, Nd) system. La0.6Y0.4Ni4.8Mn0.2,which was used in an air-conditioning system, showed poor hysteresis and sloping characteristics, which led to a decrease concerning the coefficient of performance of the system. By the substitution of Nd for Y, the hydrogenstorage capacity increased, and the plateau pressure decreased a little, but the hydrogen absorption kinetics decreased dramatically. Cu addition can effectively improve the kinetics of hydride formation without changing the hydrogen storage capacity of La0.6Nd0.4Ni4.8Mn0.2. It has been found that La0.6Nd0.4Ni4.8Mn0.2Cu0.1 alloy showed good hydrogen storage characteristics for metal hydride air-conditioning system. The results showed that, for each component of La0.6Mo.4Ni4.8Mn0.2, the effective hydrogen storage capacity increased with decrease of the unit cell parameter c/a and the hydrogen absorption plateau pressure increased with decrease of the parameter a.

  12. A Dilemma in Staging of Esophageal Cancer: How Should We Stage ypT0 N2 M0 Esophageal Cancer after Neoadjuvant Therapy?

    Directory of Open Access Journals (Sweden)

    Sebahattin Celik

    2015-01-01

    Full Text Available Background. Since neoadjuvant treatment in esophageal cancer began to become popular, a complete pathological response at the primary tumour site has been commonly reported. An issue of conflict is whether complete response in the esophageal lumen means that the esophagus is completely tumour-free. Another important issue is whether lymph nodes that are retrieved from pathologically complete response cases are also tumour-free or not. There is a gap in the esophageal cancer staging system for ypT0 N2 M0 tumours that have received neoadjuvant therapy. Here, we will discuss the problem about staging of esophageal cancer associated with neoadjuvant therapy. Case. A female aged 40 years complaining of dysphagia was diagnosed as having locally advanced thoracic esophageal cancer. Neoadjuvant therapy decision was taken by oncology committee. Six weeks after neoadjuvant therapy, with a curative intention, minimal invasive surgery was performed. The pathology report was as follows. “There were no neoplastic cells in the suspected area of the esophageal mucosa upon examination with all staining. There was no cancer at resection margins. Four metastatic lymph nodes were infiltrated with squamous cell cancer.” Conclusion. Despite the growing use of neoadjuvant treatment in locally advanced esophageal cancer in world, we do not have a protocol for the evaluation of these patients’ pathology reports. We believe that new studies and new ideas are needed to resolve this dilemma associated with neoadjuvant therapy.

  13. Grids of white dwarf evolutionary models with masses from M = 0.1 $M(solar)$ to M = 1.2 $M(solar)$

    CERN Document Server

    Benvenuto, O G

    1999-01-01

    We present detailed evolutionary calculations for CO- and helium- core white dwarf (WD) models with masses ranging from M= 0.1 to M= 1.2 and for metallicities Z= 0.001 and Z= 0. The sequences cover a wide range of hydrogen envelopes as well. We employed a detailed WD evolutionary code. In particular, the energy transport by convection is treated within the formalism of the full spectrum turbulence theory. Convective mixing, crystallization, hydrogen burning and neutrino energy losses are considered. The set of models presented here is very detailed and should be valuable for the interpretation of the observational data about low mass WDs recently discovered in numerous binary configurations and also for the general problem of determining the theoretical luminosity function for WDs. In this context, we compare our cooling sequences to the observed WD luminosity function recently improved by Leggett, Ruiz and Bergeron (1998) and we obtain an age for the Galactic disk of approximately 8 Gyr. Finally, we applied ...

  14. 基于NX8.0盘形凸轮轮廓曲线的参数化设计及运动仿真%Parametric Design and Motion Simulation of Disc Cam Profile Curve Based on NX8.0

    Institute of Scientific and Technical Information of China (English)

    张恩光; 王丽; 黄冠元; 惠帅

    2014-01-01

    This paper presents a parametric design method of the cam profile curve with“law curve”function of NX8.0,analyzes the continuity of the cam profile curve and verifies the correctness of the design through the cam motion simulation. Through the analysis of the displacement and velocity motion laws of the fol ower,the parametric drive of the cam design is verified. The result shows that the CAD and CAE module of NX8.0 can is used for the parametric design and motion analysis of the cam profile curve to ful y guaran-tee the design accuracy and greatly improve the editability and reusability of the model.%介绍了利用NX8.0的“规律曲线”功能对凸轮轮廓曲线进行参数化设计的方法,分析了凸轮轮廓曲线的连续性,通过对凸轮的运动仿真验证了设计结果的正确性,分析了从动件的位移和速度的运动规律,验证了凸轮设计的参数化驱动,结果表明使用NX8.0的CAD和CAE模块对凸轮轮廓曲线进行参数化设计和运动分析能够充分保证设计精度,大大提高了模型可编辑性与重用性。

  15. Band gap characterization of ternary BBi1-xNx (0≤x≤1) alloys using modified Becke-Johnson (mBJ) potential

    Science.gov (United States)

    Yalcin, Battal G.

    2015-04-01

    The semi-local Becke-Johnson (BJ) exchange-correlation potential and its modified form proposed by Tran and Blaha have attracted a lot of interest recently because of the surprisingly accurate band gaps they can deliver for many semiconductors and insulators (e.g., sp semiconductors, noble-gas solids, and transition-metal oxides). The structural and electronic properties of ternary alloys BBi1-xNx (0≤x≤1) in zinc-blende phase have been reported in this study. The results of the studied binary compounds (BN and BBi) and ternary alloys BBi1-xNx structures are presented by means of density functional theory. The exchange and correlation effects are taken into account by using the generalized gradient approximation (GGA) functional of Wu and Cohen (WC) which is an improved form of the most popular Perdew-Burke-Ernzerhof (PBE). For electronic properties the modified Becke-Johnson (mBJ) potential, which is more accurate than standard semi-local LDA and PBE calculations, has been chosen. Geometric optimization has been implemented before the volume optimization calculations for all the studied alloys structure. The obtained equilibrium lattice constants of the studied binary compounds are in coincidence with experimental works. And, the variation of the lattice parameter of ternary alloys BBi1-xNx almost perfectly matches with Vegard's law. The spin-orbit interaction (SOI) has been also considered for structural and electronic calculations and the results are compared to those of non-SOI calculations.

  16. Atomic Layer Deposition TiO2 Films and TiO2/SiNx Stacks Applied for Silicon Solar Cells

    Directory of Open Access Journals (Sweden)

    Zu-Po Yang

    2016-08-01

    Full Text Available Titanium oxide (TiO2 films and TiO2/SiNx stacks have potential in surface passivation, anti-reflection coatings and carrier-selective contact layers for crystalline Si solar cells. A Si wafer, deposited with 8-nm-thick TiO2 film by atomic layer deposition, has a surface recombination velocity as low as 14.93 cm/s at the injection level of 1.0 × 1015 cm−3. However, the performance of silicon surface passivation of the deposited TiO2 film declines as its thickness increases, probably because of the stress effects, phase transformation, atomic hydrogen and thermal stability of amorphous TiO2 films. For the characterization of 66-nm-thick TiO2 film, the results of transmission electron microscopy show that the anatase TiO2 crystallinity forms close to the surface of the Si. Secondary ion mass spectrometry shows the atomic hydrogen at the interface of TiO2 and Si which serves for chemical passivation. The crystal size of anatase TiO2 and the homogeneity of TiO2 film can be deduced by the measurements of Raman spectroscopy and spectroscopic ellipsometry, respectively. For the passivating contacts of solar cells, in addition, a stack composed of 8-nm-thick TiO2 film and a plasma-enhanced chemical-vapor-deposited 72-nm-thick SiNx layer has been investigated. From the results of the measurement of the reflectivity and effective carrier lifetime, TiO2/SiNx stacks on Si wafers perform with low reflectivity and some degree of surface passivation for the Si wafer.

  17. 美利肯Millad NX 8000透明剂为Sistema聚丙烯容器赢得更多客户青睐

    Institute of Scientific and Technical Information of China (English)

    易美济

    2011-01-01

    在2011芝加哥国际家庭用品博览会上,总部位于新西兰的Sistema塑胶有限公司隆重推介其全新升级的聚丙烯(PP)食品储藏容器产品线。此类产品采用了美利肯公司的Millad NX 8000高级透明剂,具有堪比玻璃的出色清晰度,这也正是成就Sistema产品卓越品质的一个重要因素。

  18. Crystal, electronic and luminescence properties of Eu2+-doped Sr2Al2−xSi1+xO7−xNx

    Directory of Open Access Journals (Sweden)

    Yuan Qiang Li, Naoto Hirosaki, Rong-Jun Xie and Mamoru Mitomo

    2007-01-01

    Full Text Available The crystal and electronic structures, as well as the luminescence properties of Sr2Al2−xSi1+xO7−xNx:Eu2+ are reported. First-principles calculations energetically confirm that the Al and Si atoms are in partial ordering in the 2a and 4e sites in Sr2Al2SiO7. In addition, the band structure calculation shows that Sr2Al2SiO7 has an indirect band gap with an energy gap of about 4.07 eV, which is in good agreement with the experimental data (~5.3 eV obtained from the diffuse reflection spectrum. The crystal structure of Sr2Al2SiO7 can be modified by Si–N substitution for Al–O in the lattice with a maximum solubility of about x=0.6. The average bond length of EuSr-(O,N slightly increases although the lattice parameters decrease with the incorporation of Si–N in Sr2Al2SiO7:Eu2+. Under excitation in the visible spectral region, Sr2Al2−xSi1+xO7−xNx:Eu2+ emits blue to yellow light with a broad emission band in the range of 480–570 nm, varying with both the Eu concentration and the x value. The red shift of the emission band of Eu2+ is associated with an increase in the crystal-field splitting and the covalency, which arise from the incorporation of nitrogen as well as the energy transfer between the Eu ions at high Eu concentrations. Moreover, the Eu ions have a strong effect on both the concentration quenching and the thermal quenching in Sr2Al2−xSi1+xO7−xNx. The temperature dependence of photoluminescence indicates that Sr2Al2−xSi1+xO7−xNx:Eu2+ shows strong thermal quenching due to the dominant nonradiative process at room temperature.

  19. Highly Corrosion Resistant and Sandwich-like Si3N4/Cr-CrNx/Si3N4 Coatings Used for Solar Selective Absorbing Applications.

    Science.gov (United States)

    Zhang, Ke; Du, Miao; Haoa, Lei; Meng, Jianping; Wang, Jining; Mi, Jing; Liu, Xiaopeng

    2016-12-14

    Highly corrosion resistant, layer-by-layer nanostructured Si3N4/Cr-CrNx/Si3N4 coatings were deposited on aluminum substrate by DC/RF magnetron sputtering. Corrosion resistance experiments were performed in 0.5, 1.0, 3.0, and 5.0 wt % NaCl salt spray at 35 °C for 168 h. Properties of the coatings were comprehensively investigated in terms of optical property, surface morphology, microstructure, elemental valence state, element distribution, and potentiodynamic polarization. UV-vis-near-IR spectrophotometer and FTIR measurements show that the change process in optical properties of Si3N4/Cr-CrNx/Si3N4/Al coatings can be divided into three stages: a rapid active degradation stage, a steady passivation stage, and a transpassivation degradation stage. With the increase in the concentration of NaCl salt spray, solar absorptance and thermal emittance experienced a slight degradation. SEM images reveal that there is an increase in surface defects, such as microcracks and holes and -cracks. XRD and TEM measurements indicate that the phase structure changed partially and the content of CrOx and Al2O3 has increased. Auger electron spectroscopy shows that the elements of Cr, N, and O have undergone a minor diffusion. Electrochemical polarization curves show that the as-deposited Si3N4/Cr-CrNx/Si3N4/Al coatings have excellent corrosion resistance of 3633.858 kΩ, while after corroding in 5.0 wt % NaCl salt spray for 168 h the corrosion resistance dropped to 13.759 kΩ. However, these coatings still have an outstanding performance of high solar absorptance of 0.924 and low thermal emittance of 0.090 after corroding in 3.0 wt % NaCl salt spray for 120 h. Thus, the Si3N4/Cr-CrNx/Si3N4/Al coating is a good choice for solar absorber coatings applied in the high-saline environment.

  20. Self-Aligned ALD AlOx T-gate Insulator for Gate Leakage Current Suppression in SiNx-Passivated AlGaN/GaN HEMTs

    Science.gov (United States)

    2010-01-01

    Self-aligned ALD AlOx T-gate insulator for gate leakage current suppression in SiNx-passivated AlGaN/ GaN HEMTs David J. Meyer *, Robert Bass, D...concept metal–insulator–semiconductor (MIS) AlGaN/ GaN high-electron mobility transistor ( HEMT ) that uses a self-aligned 10 nm AlOx gate insulator and...Au gate metal layers to fabri- cate submicron insulated T-gates for AlGaN/ GaN high-electron mobility transistors ( HEMTs ). Metal–insulator

  1. Ti/Cu bilayer electrodes for SiNx-passivated Hf-In-Zn-O thin film transistors: Device performance and contact resistance

    Science.gov (United States)

    Park, Joon Seok; Kim, Tae Sang; Son, Kyoung Seok; Lee, Eunha; Jung, Ji Sim; Lee, Kwang-Hee; Maeng, Wan-Joo; Kim, Hyun-Suk; Kim, Eok Su; Park, Kyung-Bae; Kwon, Jang-Yeon; Ryu, Myung Kwan; Lee, Sang Yoon

    2010-10-01

    In this study, we examine the possibility of using Ti/Cu bilayer as source/drain electrodes for SiNx-passivated Hf-In-Zn-O (HIZO) thin film transistors by comparing their electrical properties with devices that use Mo electrodes. The Mo devices operate in depletion mode with a higher field effect mobility, while the Ti/Cu devices exhibit an improved subthreshold swing and operate in enhancement mode. Transmission electron microscopy characterization reveals the formation of an amorphous TiOx layer at the Ti/HIZO interface, which is suggested to be responsible for the disparate device characteristics in terms of contact resistance and threshold delay.

  2. Nonpolar a-plane light-emitting diode with an in-situ SiNx interlayer on r-plane sapphire grown by metal-organic chemical vapour deposition

    Institute of Scientific and Technical Information of China (English)

    Fang Hao; Long Hao; Sang Li-Wen; Qi Sheng-Li; Xiong Chang; Yu Tong-Jun; Yang Zhi-Jian; Zhang Guo-Yi

    2011-01-01

    We report on the growth and fabrication of nonpolar a-plane light emitting diodes with an in-situ SiNx interlayer grown between the undoped a-plane GaN buffer and Si-doped GaN layer. X-ray diffraction shows that the crystalline quality of the GaN buffer layer is greatly improved with the introduction of the SiNx interlayer. The electrical properties are also improved. For example, electron mobility and sheet resistance are reduced from high resistance to 31.6 cm2/(V·s) and 460 Ω/□ respectively. Owing to the significant effect of the SiNx interlayer, a-plane LEDs are realized. Electroluminescence of a nonpolar a-plane light-emitting diode with a wavelength of 488nm is demonstrated.The emission peak remains constant when the injection current increases to over 20 mA.

  3. 高效解磷解钾菌 NX-11菌株的分离筛选、鉴定及最佳培养条件的确定%Screening,Identification and Sporulation Conditions Optimization of NX-11 Strain Having the Ability of Solubilizing Phosphorus and Potassium

    Institute of Scientific and Technical Information of China (English)

    麻瑞阳; 张爱民; 惠小双; 代萌; 王雯; 朱宝成

    2013-01-01

      分离筛选具有高效解磷解钾效果的菌株并进行鉴定及培养条件优化。采用鉴别培养基进行菌株分离筛选,通过生理生化鉴定及16S rRNA基因序列分析进行菌种鉴定,并对其发酵培养基和培养条件进行正交试验确定最佳培养条件。筛选出高效解磷解钾菌株NX-11。测序结果表明,NX-11与Bacillus subtilis subsp.Subtilis亲缘关系接近。确定其最佳发酵培养基配方为:淀粉5.0%,黄豆饼粉1.5%,MgSO40.07%,NaCl 0.05%;最佳培养条件为:种龄20 h、装量30 mL/250 mL三角瓶、接种量4%、pH值8.0培养温度37℃、摇床转速200 r/min。%Bacteria having the efficient activity on solubilizing phosphate and potassium have been isolated for its utilization as a biological fertilizer .The most efficient strain named NX-11 was chosen for further study .NX-11 was identified as Bacillus subtilis after a series of physiological and biochemical experiments ,morphological observa-tion and 16S rRNA gene sequence analysis .The solubilization ability of NX-11 was tested in the condition of pure cul-ture.The results showed that the optimal medial components were composed of 5.0% starch,1.5% soybean cake powder,0.07%MgSO4 ,0.05%NaCl.The optimal culture conditions were at temperature 37 ℃with initial pH 8.0 and incubation time 20 h,inoculum’s volume 40 mL/L,medium volume 30 mL in 250 mL flask and 200 r/min.

  4. 采用真空磁控反应溅射和热水氧化法制备AlNxOy增透膜%Preparation of Transmittance-Increasing AlNxOy Film by Vacuum Magnetron Reactively Sputtering and Hydrothermal Oxidation Method

    Institute of Scientific and Technical Information of China (English)

    池华敬; 熊凯; 郭帅; 许丽; 王双; 陈革; 章其初

    2011-01-01

    在3.2mm厚的低铁玻璃衬底上采用金属Al靶在溅射气体Ar和反应气体H2的混合气体中,真空磁控反应溅射沉积半透明的Al-AlN金属陶瓷薄膜.再将沉积该薄膜的玻璃试样浸入沸腾的去离子水中,经一定时间氧化后,制备成表面粗糙的AlN和Al2O3的陶瓷混合物增透膜AlNxOy.在3.2 mm厚的低铁玻璃上,溅射沉积厚度为120 nm的Al-AlN金属陶瓷薄膜,沸水氧化8 min,制备的单面增透膜AlNxOy试样的太阳透射比Te达93.5%,可见光透射比Tv达95.2%.制备的双面增透膜AlNxOy试样的Te,Tv进一步提高,Te高达95.6%,与未镀膜玻璃衬底的90.4%相比,增加了5.2%;Tv高达97.0%,与玻璃衬底的91.6%相比,增加了5.4%.%The translucent A1-A1N cermet thin film are deposited on 3.2 mm thickness low-iron glass substrate by magnetron reactive sputtering using Al target in the atmosphere of Ar and N2. The transmittance-increasing film of AlNxOy with surface roughness are made after hydrothermal oxidation in boiling pure water for a certain time. For a 3.2 mm thickness low-iron glass with a AlNxOy, film obtained by oxidation a 120 nm thickness A1-A1N film in boiling water for 8 min, the measured solar light transmittance Te is 93.5%, and the visible light transmittance Tv is 95.2%. For a glass that both sides is coated, Te and Tv are 95.6% and 97% respectively, while for uncoated glass, the two values are 90.4% and 91.6%.

  5. 关于丢番图方程(195n)x+(28n)y=(197n)z%On the Diophantine equation (195n)x+(28n)y=(197n)z

    Institute of Scientific and Technical Information of China (English)

    凌灯荣; 翁建欣

    2013-01-01

    In this paper, using the properties of congruences and the order of elements, we show that for any positive integer n, the Diophantine equation (195n)x+(28n)y =(197n)z has no solution other than (x, y, z)=(2, 2, 2) in positive integers.%  运用同余及元素阶的性质,证明了对任意的正整数n,丢番图方程(195n)x+(28n)y=(197n)z仅有正整数解(x, y, z)=(2,2,2)。

  6. Temperature and Composition Dependence of GaNxAs1-x(0<x≤0.05)before and after Annealing

    Institute of Scientific and Technical Information of China (English)

    赵传阵; 李娜娜; 魏通; 唐春晓

    2011-01-01

    The parameters in the band-anticrossing model for GaNxAsi-x (0NxAs1-x(0<x≤0.05)are obtained considering the effect of temperature and composition.It is found that the effect of composition on the N levels in the band-anticrossing model is weak.The temperature dependence of the N levels and the temperature dependence of the band gap energy of GaNAs are weaker than that of GaAs.In addition,the reason for a spectral blueshift and the effect of annealing on the parameters in the band-anticrossing model are also discussed.

  7. First-Principle Study of the Structural, Electronic, and Optical Properties of Cubic InNxP1-x Ternary Alloys under Hydrostatic Pressure

    Science.gov (United States)

    Hattabi, I.; Abdiche, A.; Moussa, R.; Riane, R.; Hadji, K.; Soyalp, F.; Varshney, Dinesh; Syrotyuk, S. V.; Khenata, R.

    2016-09-01

    In this article, we present results of the first-principle study of the structural, electronic, and optical properties of the InN, InP binary compounds and their related ternary alloy InNxP1-x in the zinc-blend (ZB) phase within a nonrelativistic full potential linearised augmented plan wave (FP-LAPW) method using Wien2k code based on the density functional theory (DFT). Different approximations of exchange-correlation energy were used for the calculation of the lattice constant, bulk modulus, and first-order pressure derivative of the bulk modulus. Whereas the lattice constant decreases with increasing nitride composition x. Our results present a good agreement with theoretical and experimental data. The electronic band structures calculated using Tran-Blaha-modified Becke-Johnson (TB-mBJ) approach present a direct band gap semiconductor character for InNxP1-x compounds at different x values. The electronic properties were also calculated under hydrostatic pressure for (P=0.00, 5.00, 10.0, 15.0, 20.0, 25.0 GPa) where it is found that the InP compound change from direct to indirect band gap at the pressure P≥7.80 GPa. Furthermore, the pressure effect on the dielectric function and the refractive index was carried out. Results obtained in our calculations present a good agreement with available theoretical reports and experimental data.

  8. Nanomechanical Properties and Deformation Behaviors of Multi-Component (AlCrTaTiZrNxSiy High-Entropy Coatings

    Directory of Open Access Journals (Sweden)

    Shao-Yi Lin

    2013-12-01

    Full Text Available In this study multi-component (AlCrTaTiZrNxSiy high-entropy coatings were developed by co-sputtering of AlCrTaTiZr alloy and Si in an Ar/N2 mixed atmosphere with the application of different substrate biases and Si-target powers. Their nanomechanical properties and deformation behaviors were characterized by nanoindentation tests. Because of the effect of high mixing entropies, all the deposited multi-component (AlCrTaTiZrNxSiy high-entropy coatings exhibited a simple face-centered cubic solid-solution structure. With an increased substrate bias and Si-target power, their microstructures changed from large columns with a [111] preferred orientation to a nanocomposite form with ultrafine grains. The hardness, H/E ratio and H3/E2 ratio of (AlCrTaTiZrN1.07Si0.15 coating reached 30.2 GPa, 0.12 and 0.41 GPa, respectively, suggesting markedly suppressed dislocation activities and a very high resistance to wear and plastic deformation, attributable to grain refinements and film densification by the application of substrate bias, a nanocomposite structure by the introduction of silicon nitrides, and a strengthening effect induced by severe lattice distortions. In the deformed regions under indents, stacking faults or partial dislocations were formed, while in the stress-released regions, near-perfect lattices recovered.

  9. Mechanistic Study of Visible-Light-Induced Photodegradation of 4-Chlorophenol by TiO2−xNx with Low Nitrogen Concentration

    Directory of Open Access Journals (Sweden)

    Guangfeng Shang

    2012-01-01

    Full Text Available TiO2−x Nx powders with low N-doping concentrations (0.021<<0.049 were prepared by annealing commercial TiO2 (P-25 under an NH3 flow at 550°C. Regardless of UV or visible case, the photoactivities of the samples decreased as x increased, and TiO1.979N0.021 showed the highest activity for the 4-chlorophenol (4-CP decomposition under the visible-light irradiation. The visible-light response for N-doped TiO2 could arise from an N-induced midgap level, formed above the valence band (O 2p. Electron spin resonance (ESR measurements and the radical scavenger technologies gave the combined evidence that the active species (•OH and O2•− are responsible for the photodecomposition of 4-CP over TiO2−xNx under the visible irradiation. A possible photocatalytic mechanism was discussed in detail.

  10. Enhanced poly(γ-glutamic acid) production by H2 O2 -induced reactive oxygen species in the fermentation of Bacillus subtilis NX-2.

    Science.gov (United States)

    Tang, Bao; Zhang, Dan; Li, Sha; Xu, Zongqi; Feng, Xiaohai; Xu, Hong

    2016-09-01

    Effects of reactive oxygen species (ROS) on cell growth and poly(γ-glutamic acid) (γ-PGA) synthesis were studied by adding hydrogen peroxide to a medium of Bacillus subtilis NX-2. After optimizing the addition concentration and time of H2 O2 , a maximum concentration of 33.9 g/L γ-PGA was obtained by adding 100 µM H2 O2 to the medium after 24 H. This concentration was 20.6% higher than that of the control. The addition of diphenyleneiodonium chloride (ROS inhibitor) can interdict the effect of H2 O2 -induced ROS. Transcriptional levels of the cofactors and relevant genes were also determined under ROS stress to illustrate the possible metabolic mechanism contributing to the improve γ-PGA production. The transcriptional levels of genes belonging to the tricarboxylic acid cycle and electron transfer chain system were significantly increased by ROS, which decreased the NADH/NAD(+) ratio and increased the ATP levels, thereby providing more reducing power and energy for γ-PGA biosynthesis. The enhanced γ-PGA synthetic genes also directly promoted the formation of γ-PGA. This study was the first to use the ROS control strategy for γ-PGA fermentation and provided valuable information on the possible mechanism by which ROS regulated γ-PGA biosynthesis in B. subtilis NX-2.

  11. Development of Jerusalem artichoke resource for efficient one-step fermentation of poly-(γ-glutamic acid) using a novel strain Bacillus amyloliquefaciens NX-2S.

    Science.gov (United States)

    Qiu, Yibin; Sha, Yuanyuan; Zhang, Yatao; Xu, Zongqi; Li, Sha; Lei, Peng; Xu, Zheng; Feng, Xiaohai; Xu, Hong

    2017-09-01

    This study aimed to develop non-food fermentation for the cost-effective production of poly-(γ-glutamic acid) (γ-PGA) using a novel strain of Bacillus amyloliquefaciens NX-2S. The new isolate assimilated inulin more efficiently than other carbohydrates from Jerusalem artichoke, without hydrolytic treatment. To investigate the effect of inulin on γ-PGA production, the transcript levels of γ-PGA synthetase genes (pgsB, pgsC, pgsA), regulatory genes (comA, degQ, degS), and the glutamic acid biosynthesis gene (glnA) were analyzed; inulin addition upregulated these key genes. Without exogenous glutamate, strain NX-2S could produce 6.85±0.22g/L of γ-PGA during fermentation. Exogenous glutamate greatly enhances the γ-PGA yield (39.4±0.38g/L) and productivity (0.43±0.05g/L/h) in batch fermentation. Our study revealed a potential method of non-food fermentation to produce high-value products. Copyright © 2017. Published by Elsevier Ltd.

  12. Risk and timing of biochemical recurrence in pT3aN0/Nx prostate cancer with positive surgical margin - A multicenter study.

    Science.gov (United States)

    Karl, Alexander; Buchner, Alexander; Tympner, Christiane; Kirchner, Thomas; Ganswindt, Ute; Belka, Claus; Ganzer, Roman; Wieland, Wolf; Eder, Fabian; Hofstädter, Ferdinand; Schilling, David; Sievert, Karl-Dietrich; Stenzl, Arnulf; Scharpf, Marcus; Fend, Falko; Vom Dorp, Frank; Rübben, Herbert; Schmid, Kurt Werner; Porres-Knoblauch, Daniel; Heidenreich, Axel; Hangarter, Birgit; Knüchel-Clarke, Ruth; Rogenhofer, Michael; Wullich, Bernd; Hartmann, Arndt; Comploj, Evi; Pycha, Armin; Hanspeter, Esther; Pehrke, Dirk; Sauter, Guido; Graefen, Markus; Gratzke, Christian; Stief, Christian; Wiegel, Thomas; Haese, Alexander

    2015-07-01

    Positive surgical margins (PSM) after radical prostatectomy have been shown to be associated with impaired outcome. In pT3pN0 patients with PSM either immediate radiotherapy or clinical and biological monitoring followed by salvage radiotherapy is recommended by the latest guidelines of the European Association of Urology. A retrospective, multicenter study of eight urological centers was conducted on 536 prostatectomy patients with pT3aN0/NxR1 tumors and no neoadjuvant/adjuvant therapy. A pathological re-review of all prostate specimens was performed. Association of clinical and pathological features with biochemical recurrence (BCR) was analyzed using univariate and multivariate analysis. With 48months median follow-up, BCR occurred in 39.7%. Preoperative PSA value, performance of pelvic lymph node dissection and Gleason score were significantly associated with BCR. In multivariate analysis, Gleason score was the only independent prognostic factor (p<0.001) for BCR. Five-year BCR-free survival rates were 74%, 70%, 38%, and 51% with Gleason score 6, 3+4=7a, 4+3=7b, and 8-10, respectively. In pT3aN0/NxR1 patients with no adjuvant/neoadjuvant treatment, Gleason Score permits independent prediction of the risk for BCR. These findings could help to estimate and discuss the individual risk for BCR with our patients on an individual basis. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  13. "Wiring" Fe-Nx -Embedded Porous Carbon Framework onto 1D Nanotubes for Efficient Oxygen Reduction Reaction in Alkaline and Acidic Media.

    Science.gov (United States)

    Ahn, Sung Hoon; Yu, Xingwen; Manthiram, Arumugam

    2017-07-01

    This study presents a novel metal-organic-framework-engaged synthesis route based on porous tellurium nanotubes as a sacrificial template for hierarchically porous 1D carbon nanotubes. Furthermore, an ultrathin Fe-ion-containing polydopamine layer has been introduced to generate highly effective FeNx C active sites into the carbon framework and to induce a high degree of graphitization. The synergistic effects between the hierarchically porous 1D carbon structure and the embedded FeNx C active sites in the carbon framework manifest in superior catalytic activity toward oxygen reduction reaction (ORR) compared to Pt/C catalyst in both alkaline and acidic media. A rechargeable zinc-air battery assembled in a decoupled configuration with the nonprecious pCNT@Fe@GL/CNF ORR electrode and Ni-Fe LDH/NiF oxygen evolution reaction (OER) electrode exhibits charge-discharge overpotentials similar to the counterparts of Pt/C ORR electrode and IrO2 OER electrode. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  14. Economical production of poly(γ-glutamic acid) using untreated cane molasses and monosodium glutamate waste liquor by Bacillus subtilis NX-2.

    Science.gov (United States)

    Zhang, Dan; Feng, Xiaohai; Zhou, Zhe; Zhang, Yang; Xu, Hong

    2012-06-01

    The production of poly(γ-glutamic acid) by Bacillus subtilis NX-2 from cane molasses and monosodium glutamate waste liquor (MGWL) was studied for the first time in this work. When batch fermentation was carried out with untreated molasses, 33.6±0.37 g L(-1) PGA was obtained with a productivity of 0.46±0.006 g L(-1) h(-1). In order to minimize the substrate inhibition, fed-batch fermentation was performed with untreated or hydrolyzed molasses in 7.5 L bioreactor, giving 50.2±0.53 and 51.1±0.51 g L(-1) of PGA at 96 h, respectively. Further studies were carried out by using MGWL as another carbon source, resulting in a PGA concentration of 52.1±0.52 g L(-1) with a productivity of 0.54±0.003 g L(-1) h(-1). These results suggest that the low-cost cane molasses and MGWL can be used for the environmental-friendly and economical production of PGA by B. subtilis NX-2.

  15. Prognostic value of lymph node micrometastases in patients with colorectal cancer in Dukes stages A and B (T1-T4, N0, M0 Valor pronóstico de las micrometástasis linfoganglionares en pacientes con cáncer colorrectal en estadios A y B de Dukes (T1-T4, N0, M0

    Directory of Open Access Journals (Sweden)

    R. Uribarrena-Amezaga

    2010-03-01

    Full Text Available Background: 30% of patients with colorectal cancer (CRC in Dukes stages A and B (T1-T4, N0, M0 present tumor recurrence and die after 5 years follow up. This unexpectedly poor evolution might be attributable to the presence of lymph node micrometastasis undetected in routine examination with haematoxilin-eosine (H&E. Objective: to assess the presence of undetected micrometastasis. Patients and methods: we conducted a retrospective study of the locoregional lymph nodes in 85 patients operated for CRC in Dukes stages A and B (T1-T4, N0, M0, using immunohistochemistry with anticytokeratin antibodies AE1/AE3. In this descriptive, inferential bivariant and survival study, we analyzed different risk factors, including local infiltration T1/T4, Dukes A/B, number of dissected lymph nodes, vascular invasion, micrometastasis, tumor recurrence and death in the context of the presence or absence of micrometastases. Results: Dukes stage and neoplastic angioinvasion are influential in patient prognosis; however, lymph node micrometastases were not associated with a poorer outcome of CRC. Conclusions: locorregional lymph node micrometastases detected with anticytokeratine antibodies AE1/AE3 in Dukes A and B CRC patients are not associated with reduced survival.Introducción: un 30% de los pacientes con cáncer colorrectal (CCR en estadios A y B de Dukes (T1-T4, N0, M0 presentan recidiva tumoral y/o fallecen a los 5 años. Esta inesperada mala evolución, en casos presumiblemente curados podría deberse, entre otras causas, a la presencia de micrometástasis linfoganglionares no detectadas en el estudio de rutina: hematoxilina-eosina (H&E. Objetivo: determinar si la presencia de micrometástasis linfoganglionares detectadas mediante inmunohistoquímica con anticuerpos anticitoqueratina AE1/AE3, influyen en la evolución del CCR. Pacientes y métodos: se han estudiado los ganglios linfáticos locorregionales de 85 pacientes con CCR en estadios A y B de Dukes (T1

  16. NX15 science workshop

    CERN Multimedia

    2015-01-01

    Science. For some of us, it's daunting or maybe even terrifying. How to tell a good science story? That's the question we will explore together in this workshop. Conceived and produced by journalist and Scientific News producer Claudio Rosmino of Euronews, and presented by Euronews' Jeremy Wilks, the workshop will look at actual case studies (from Euronews and beyond) where science news proved exciting, inspiring and accessible to audiences around the world. These might include the Rosetta mission and CERN's work on Science for Peace. Together, we'll share ideas and knowledge around how science journalism and science news can increase its visibility in the media and maybe save the planet...!

  17. Application of the Machine Vice Motion Simulation Based on the UG NX%基于UG NX在机用虎钳运动仿真中的应用

    Institute of Scientific and Technical Information of China (English)

    胡素萍

    2012-01-01

    NX是一种最普及、最优秀的CAD/CAM/CAE软件。笔者结合近几年的教学及工作经验,借助NX软件强大的实体建模功能进行建模,并利用装配功能完成了虚拟模型的创建,然后进行了详细的运动仿真分析。本文简单介绍NX软件的装配模块以及UGNX运动仿真应用于机械结构设计。%NX is one of the most popular and the most excellent CAD/CAM/CAE software. Combined with the teaching and work experience in recent years, and with the help of powerful modeling function of the NX soft- ware, this paper uses the assembly function to complete the virtual model, and then carries out a detailed analysis simulation. This paper briefly introduces the assembly module of the NX software and the application of UG NX motion simulation to the design of mechanical structure.

  18. A comparison of the 60Co gamma radiation hardness, breakdown characteristics and the effect of SiNx capping on InAlN and AlGaN HEMTs for space applications

    Science.gov (United States)

    Smith, M. D.; O'Mahony, D.; Vitobello, F.; Muschitiello, M.; Costantino, A.; Barnes, A. R.; Parbrook, P. J.

    2016-02-01

    Electrical performance and stability of InAlN and AlGaN high electron mobility transistors (HEMTs) subjected 9.1 mrad of 60Co gamma radiation and off-state voltage step-stressing until breakdown are reported. Comparison with commercially available production-level AlGaN HEMT devices, which showed negligible drift in DC performance throughout all experiments, suggests degradation mechanisms must be managed and suppressed through development of advanced epitaxial and surface passivation techniques in order to fully exploit the robustness of the III-nitride material system. Of the research level devices without dielectric layer surface capping, InAlN HEMTs exhibited the greater stability compared with AlGaN under off-state bias stressing and gamma irradiation in terms of their DC characteristics, although AlGaN HEMTs had significantly higher breakdown voltages. The effect of plasma-enhanced chemical vapour deposition SiNx surface capping is explored, highlighting the sensitivity of InAlN HEMT performance to surface passivation techniques. InAlN-SiNx HEMTs suffered more from trap related degradation than AlGaN-SiNx devices in terms of radiation hardness and step-stress characteristics, attributed to an increased capturing of carriers in traps at the InAlN/SiNx interface.

  19. MC3T3-E1 Cell Response to Ti1-xAgx and Ag-TiNx Electrodes Deposited on Piezoelectric Poly(vinylidene fluoride) Substrates for Sensor Applications.

    Science.gov (United States)

    Marques, S M; Rico, P; Carvalho, I; Gómez Ribelles, J L; Fialho, L; Lanceros-Méndez, S; Henriques, M; Carvalho, S

    2016-02-17

    In the sensors field, titanium based coatings are being used for the acquisition/application of electrical signals from/to piezoelectric materials. In this particular case, sensors are used to detect dynamic mechanical loads at early stages after intervention of problems associated with prostheses implantation. The aim of this work is to select an adequate electrode for sensor applications capable, in an initial stage to avoid bone cell adhesion, but at a long stage, permit osteointegration and osteoinduction. This work reports on the evaluation of osteoblast MC3T3-E1 cells behavior in terms of proliferation, adhesion and long-term differentiation of two different systems used as sensor electrodes: Ti1-xAgx and Ag-TiNx deposited by d.c. and pulsed magnetron sputtering at room temperature on poly(vinylidene fluoride) (PVDF). The results indicated an improved effect of Ag-TiNx electrodes compared with Ti1-xAgx and TiN, in terms of diminished cell adhesion and proliferation at an initial cell culture stage. Nevertheless, when cell culture time is longer, cells grown onto Ag-TiNx electrodes are capable to proliferate and also differentiate at proper rates, indicating the suitability of this coating for sensor application in prostheses devices. Thus, the Ag-TiNx system was considered the most promising electrode for tissue engineering applications in the design of sensors for prostheses to detect dynamic mechanical loads.

  20. t(4;11 (q21;q23 in acute myeloid leukemia-M0 following treatment [EW92 Protocol] for Ewing's sarcoma Leucemia mielóide aguda-M0 com t(4;11 (q21;q23 após tratamento para sarcoma de Ewing com o protocolo EW92

    Directory of Open Access Journals (Sweden)

    Terezinha J. Marques Salles

    2004-01-01

    Full Text Available We report on a 7-year-old girl with Ewing's Sarcoma (ES who developed a poorly differentiated acute myeloid leukemia (AML-M0 20 months after beginning the EW92 protocol for the treatment of the primary tumor. She received a total dose of 1500 mg of etoposide, a tumor cumulative radiation dose of 35Gy and granulocyte colony-stimulating factor (G-CSF was as predicted in the protocol regimen. At onset of secondary malignancy her laboratorial analysis revealed immature blast cells characterized by CD34+/CD33-/a-MPO+ and a t(4;11(q21;q23 abnormality. This serious complication of ES treatment, which associates etoposide, irradiation and G-CSF schedule, should be weighed against its therapeutic benefits.Nós descrevemos o caso clínico de uma criança do sexo feminino, com 7 anos de idade, portadora de sarcoma de Ewing, que evoluiu com leucemia aguda mielóide pouco diferenciada (LMA-M0 após vinte meses de tratamento utilizando o protocolo EW92. Ela recebeu uma dose total de 1.500 mg de etoposídio, irradiação tumoral na dose total de 35G, e fator de estimulação de colônia granulocítica (G-CSF conforme programação do protocolo terapêutico. Os exames laboratoriais, por ocasião do diagnóstico da segunda malignidade, mostraram células blásticas imaturas caracterizadas pela expressão de CD34+/CD33-/aMPO+ e a translocação t(4;11 (q 21;q23. A exclusão do G-CSF nos esquemas terapêuticos que associam etoposídio e irradiação tumoral se justifica devido a esta séria complicação no tratamento do sarcoma de Ewing.

  1. Establishment Conforms to National Standard Dimensioning Siemens NX Software%Siemens NX软件中建立符合国标尺寸标注

    Institute of Scientific and Technical Information of China (English)

    苏丹娅

    2016-01-01

    本文探索了Siemens NX软件中建立符合国标尺寸标注的方法,通过一项项的设置使得在其平台上能够高效的建立美观、符合国标的工程图,同时保证了工程图与3D模型之间的关联性。%This paper explores the establishing method of GB dimension Siemens NX software, through a set makes it possible to build beautiful, accord with national standard of engineering drawing on its platform, but also ensure the relationship between engineering drawing and 3D model.

  2. The Semiclassical distorted wave (SCDW) model for multistep direct processes in (p,px) and (p, nx) reactions at intermediate energies: formalism and application

    CERN Document Server

    Kawai, M; Watanabe, Y

    2002-01-01

    The semi-classical distorted wave (SCDW) model for (p,p sup ' x) and (p,nx) reactions at intermediate energies is presented. Simple closed forms with no free adjustable parameter are derived for inclusive double differential cross sections and spin observables. The formulae allow simple intuitive physical interpretations. Applications of the model to analyses of experimental data at 120 to 400 MeV on target nuclei sup 1 sup 2 C, sup 4 sup 0 Ca and sup 9 sup 0 Zr are discussed. Calculations include up to three-step processes with realistic effective nucleon-nucleon interactions modified in the nuclear medium. Good over all agreement with the data is obtained including absolute magnitude of the cross sections. Through the analysis the role of multistep processes is revealed and the possibility of extracting information on nucleon-nucleon interaction in the nuclear medium becomes clear

  3. Photochemical generation of H2NCNX, H2NNCX, H2NC(NX) (X = O, S) in low-temperature matrices.

    Science.gov (United States)

    Vörös, Tamás; Lajgút, Győző György; Magyarfalvi, Gábor; Tarczay, György

    2017-01-14

    The [NH2, C, N, O] and the [NH2, C, N, S] molecular systems were investigated by computational and matrix-isolation spectroscopic methods. The determination of the equilibrium structures and relative energies by CCSD(T) method was followed by the computation of the harmonic and anharmonic vibrational wavenumbers, infrared intensities, relative Raman activities, and UV excitation energies. These computed data were used to assist the identification of products obtained by UV laser photolysis of 3,4-diaminofurazan and 3,4-diaminothiadiazole in low-temperature Ar and Kr matrices. It is shown that two open-chain H2NNCX and H2NCNX and one cyclic H2NC(NX) (X = O, S) isomers are generated in the case of both systems. Except for H2NNCO and H2NCNS, the present study reports the first generation and spectroscopic identification of these compounds.

  4. Customization and Application of Machining Data Library Based on UG NX%NX加工数据库的定制及应用

    Institute of Scientific and Technical Information of China (English)

    孙文学

    2015-01-01

    This paper introduces the customization and application of machining data library of NX. Machining data library by customized can reflect enterprises' conditions of NC machining,and enterprises' standards. It will provide NC programmer more convenient ways for controlling parameters of NC manufacturing. And it will provide more efficient and exact conditions for technician.%主要介绍了NX加工数据库中数控加工工艺参数的客户化定制方法和应用,经过定制的加工数据库更能反映企业实际数控加工工艺条件、标准和环境,为数控加工编程技术人员提供更为便利的操作,为企业的数控编程应用更上一个台阶提供高效、准确的条件.

  5. NX注塑模向导中的视图管理器定制及应用%Customization & Application of View Manager in NX Moldwizard

    Institute of Scientific and Technical Information of China (English)

    孙文学

    2015-01-01

    This Paper introduce the customization and application of view manager of NX Mold wizard. View manager after customized can reflect enterprises’ standards and habits of using. It will provide mold designers more convenient ways for controlling components.%介绍了NX注塑模向导(Moldwizard)中视图管理器的客户化定制方法和应用,定制后的视图管理器(View Manager)能更好地满足企业的标准及工程技术人员的使用习惯,为模具设计工程技术人员提供更为便利的组件操作控制方式。

  6. Realization of MBD model digitalization definition in UG/NX%基于模型的数字化定义在UG/NX中的实现

    Institute of Scientific and Technical Information of China (English)

    陶杰; 葛如海; 周临震

    2013-01-01

    Through studying the development process of DPD and in-depth analysis of the relationship between DPD and MBD, the importance of DPD as the basis of MBD technology application system was revealed. The content of Digital Product Definition, the definition method of GD&T in 3D model, the application of 3D cutaway view and the comments expression of non-geometry manufacturing information of air bag support were analyzed based on UG/ NX platform. In addition, the expression method of product manufacturing information under NX platform was given. DPD, as the basis of MBD technology, will completely change the information carrier from 2D drawings to 3D model and lead digital manufacturing technology to great changes.%通过探究DPD的发展历程,深入剖析DPD与MBD的关系,揭示了DPD作为MBD技术应用体系基础的重要性.以UG/NX软件为平台,以气囊下支座为研究对象,分析了DPD定义的内容,GD&T在三维数模中的定义方法,三维剖视图的应用及非几何信息的注释表达,明确了在NX平台下产品制造信息的表达方法.DPD作为MBD技术的基础,彻底将产品定义信息载体变更为三维模型,必将引起数字化制造技术的巨大变革.

  7. Influence of a-Si:H deposition power on surface passivation property and thermal stability of a-Si:H/SiNx:H stacks

    Directory of Open Access Journals (Sweden)

    Hua Li

    2012-06-01

    Full Text Available The effectiveness of hydrogenated amorphous silicon (a-Si:H layers for passivating crystalline silicon surfaces has been well documented in the literature for well over a decade. One limitation of such layers however has arisen from their inability to withstand temperatures much above their deposition temperature without significant degradation. This limitation is of importance particularly with multicrystalline silicon materials where temperatures of at least 400°C are needed for effective hydrogenation of the crystallographic defects such as grain boundaries. To address this limitation, in this work the surface passivation quality and thermal stability of a stack passivating system, combining a layer of intrinsic a-Si:H and a capping layer of silicon nitride (SiNx:H, on p-type crystalline silicon wafers is studied and optimized. In particular the sensitivity of different microwave (MW power levels for underlying a-Si:H layer deposition are examined. Both effective minority carrier lifetime (ζeff measurement and Fourier transform infrared (FTIR spectrometry were employed to study the bonding configurations, passivating quality and thermal stability of the a-Si:H/SiNx:H stacks. It is established that the higher MW power could result in increased as-deposited ζeff and implied Voc (iVoc values, indicating likely improved surface passivation quality, but that this combination degrades more quickly when exposed to prolonged thermal treatments. The more dihydride-rich film composition corresponding to the higher MW power appears to be beneficial for bond restructuring by hydrogen interchanges when exposed to short term annealing, however it also appears more susceptible to providing channels for hydrogen out-effusion which is the likely cause of the poorer thermal stability for prolonged high temperature exposure compared with stacks with underlying a-Si:H deposited with lower MW power.

  8. 基于UG NX的产品设计重用性研究%Study on Product Design Reusability Based on UG NX

    Institute of Scientific and Technical Information of China (English)

    孙伟平

    2015-01-01

    Taking a normal Nylon cases for wheelset assembly as an example, this paper describes a method for product design reuse based on UG NX creatively. In general terms,there are essentially four steps in this design scheme:parameterized modeling, part families establishment ,application of reuse library, sharing reuse library. For more details ,users can achieve the component design reuse personally by taking advantage of modules of UG NX, such as reuse library ,etc. Furthermore , users can also share the reusable personal resource by creating a network. This scheme has significative and practical value in product design to improve efficiency and to reduce the cost by reducing the repetitive work of designers.%以轮对压装的尼龙保护套的设计为例,按照建模参数化、部件族的创建、重用库的运用、共享重用库的流程详细介绍了一套利用UG NX软件实现产品设计重用性的方法.在UG NX的部件族功能的基础上巧妙利用重用库等模块实现部件设计的个人重用,继而通过搭建共享网络实现局域网内多人共享设计重用资源. 该方案可以减少设计者的重复性工作,提高效率,降低成本,具有较好的实用价值.

  9. Influence of Substrate Heating and Nitrogen Flow on the Composition, Morphological and Mechanical Properties of SiNx Coatings Aimed for Joint Replacements

    Directory of Open Access Journals (Sweden)

    Charlotte Skjöldebrand

    2017-02-01

    Full Text Available Silicon nitride (SiNx coatings are promising for joint replacement applications due to their high wear resistance and biocompatibility. For such coatings, a higher nitrogen content, obtained through an increased nitrogen gas supply, has been found to be beneficial in terms of a decreased dissolution rate of the coatings. The substrate temperature has also been found to affect the composition as well as the microstructure of similar coatings. The aim of this study was to investigate the effect of the substrate temperature and nitrogen flow on the coating composition, microstructure and mechanical properties. SiNx coatings were deposited onto CoCrMo discs using reactive high power impulse magnetron sputtering. During deposition, the substrate temperatures were set to 200 °C, 350 °C or 430 °C, with nitrogen-to-argon flow ratios of 0.06, 0.17 or 0.30. Scanning and transmission electron spectroscopy revealed that the coatings were homogenous and amorphous. The coatings displayed a nitrogen content of 23–48 at.% (X-ray photoelectron spectroscopy. The surface roughness was similar to uncoated CoCrMo (p = 0.25 (vertical scanning interferometry. The hardness and Young’s modulus, as determined from nanoindentation, scaled with the nitrogen content of the coatings, with the hardness ranging from 12 ± 1 GPa to 26 ± 2 GPa and the Young’s moduli ranging from 173 ± 8 GPa to 293 ± 18 GPa, when the nitrogen content increased from 23% to 48%. The low surface roughness and high nano-hardness are promising for applications exposed to wear, such as joint implants.

  10. pT3N0M0期胸段食管鳞癌胸腹两野根治术后的复发模式%Patterns of recurrence in patients with stage pT3N0M0t horacic esophageal squamous cell carcinoma after two-field esophagectomy

    Institute of Scientific and Technical Information of China (English)

    王玉祥; 王丽丽; 杨琼; 李静; 何明; 姚继方; 齐战; 李宝重; 乔学英

    2016-01-01

    Objective To evaluate the patterns of recurrence and the related factors in patients with pT3N0M0 thoracic esophageal squamous cell carcinoma (ESCC) after two-field esophagectomy.Methods From Jan 2008 to Dec 2009, 208 patients with stage pT3N 0M0(2002, UICC) thoracic ESCC were treated with two-field esophagectomy in our hospital.There were 138 males and 70 females, and the median age was 60 years old ( range 33-78) .There were 33 patients in the upper-, 134 in the middle-, and 41 in the lower-thoracic esophagus, with a median length of lesion of 5 cm.There were 32 patients with no-, 78 with mild-and 98 patients with severe adhesions at surgery.The median number of dissected lymph nodes was 9 ( range 1-27) .98 patients were treated with surgery alone and 110 with postoperative adjuvant chemotherapy.The statistical analysis was conducted using SPSS 13.0 software.Results The follow-up was ended on July 2013. In the total group of 208 patients, the total recurrence rate was 41.8%(87/208).Among them, 52 patients had locoregional recurrence ( LR ) , 15 had distant metastasis ( DM ) and 20 patients had both local recurrence and distant metastasis.40.2% ( 35/87 ) of all recurrences were found within one year after operation, 67.8%( 59/87) within 2 years, 86.2%( 75/87) within 3 years, and 100%( 87/87) within 4 years.The 1-, 3-, and 5-year progression-free survival ( PFS ) rate was 83.0%, 62.8% and 56.3%, respectively.The overall locoregional recurrence rate was 34.6% ( 72/208) , among them, 9 cases had recurrence in the cervix ( all were supraclavicular lymph node metastasis) , 66 cases in the mediastinum and 4 cases had para-aortic lymph node metastasis.83.3%( 60/72) of the locoregional recurrence was located in the carinal region or upper area.The 1-, 3-, 5-year locoregional recurrence rate was 15.6%, 32.2%, and 36.8%, respectively, and the median time of recurrence was 15.5 months.The overall distant metastasis ( DM) rate was 16.8%( 35/208 ) .The 1-, 3-, and 5-year DM

  11. T1-2 N0-1 M0期乳腺癌保乳术后大分割调强放疗近期临床观察%The retrospective study of hypofractionated intensity -modulated radiotherapy in breast cancer after breast conserving surgery with stage T1-2N0-1M0

    Institute of Scientific and Technical Information of China (English)

    景娜; 王玉; 杨君; 王仙玲; 马永强

    2015-01-01

    Objective:To observe the efficacy,cosmetic outcome and adverse reaction of hypofractionated intensity-modulated radiotherapy for T1 -2 N0 -1 M0 breast cancer after breast conserving surgery.Methods:From November 2011 to November 2012,41 patients with T1 -2 N0 -1 M0 breast cancer after breast conserving surgery in Shanxi Tumor Hospital were enrolled in the trial.The hypofractionated intensity -modulated radiotherapy was applied to each pa-tient.The hypofractionated intensity -modulated radiotherapy was 43.5Gy/(15f·3w)to the whole breast,with a boost of 8.7Gy/(3f·3d)to the tumor bed.The dose was 2.9Gy per fraction,the total course of treatment was 24 days.Locoregional control and overall survival were calculated by Kaplan -Meier method.Results:The follow -up rate was 100%,the 3 -year locoregional control and overall survival were both 100%.4 developed grade Ⅰ acute ra-diodermatitis,3 developed grade Ⅱ acute radiodermatitis,5 developed grade Ⅰ leukocyte reduction,3 developed grade Ⅱ leukocyte reduction,2 developed grade Ⅲ leukocyte reduction,2 developed grade Ⅰ acute radioactive pneu-monia,1 developed grade late radioactive pneumonia,2 developed grade Ⅰ limb edema.The excellent and good rates of cosmetic outcomes before and after radiotherapy were 95.1%,87.8%,The 1 -,3 -,6 -,12 -month excellent and good rates of cosmetic outcomes after radiotherapy were 90.2%.Conclusion:The hypofractionated intensity -modula-ted radiotherapy for the patients with early -stage breast cancer after breast -conserving surgery have good therapeu-tic effects and cosmetic results,acceptable toxicities,low adverse reaction,as well as can shorten the time of radiother-apy.%目的:观察 T1-2 N0-1 M0期乳腺癌保乳术后大分割调强放疗的疗效、美容效果及不良反应。方法:选择2011年11月-2012年11月间就诊于山西省肿瘤医院乳腺疾病诊治中心的乳腺癌保乳患者41例,予大分割调强放疗,全乳计划靶体积43.5Gy

  12. AMORPHOUS HYDROGENATED ALLOYS : A COMPARATIVE EXAFS STUDY OF a-Si1-xCx : H, a-Si1- xGex : H, a-SiNx : H AT THE SILICON K-EDGE

    OpenAIRE

    1986-01-01

    a-Si1-xCx : H, a-Si1-xGex : H, a-SiNx : H alloys have been studied at the Si K-edge. Si-Si and Si-A (A being C, N, Ge) bond lengths have been determined as a function of composition. The Si-C distance was found to vary significantly, while the Si-Ge and Si-N distances remain almost constant. A high frequency signal has been detected in the a-Si1-xCx : H and a-SiNx : H films at large x due to a second shell contribution. The compositions of the first coordination shell are also reported and di...

  13. Transanal local excision for Tis-1N0M0 lower rectal carcinoma%早期直肠癌经肛门局部切除的临床观察

    Institute of Scientific and Technical Information of China (English)

    叶再元; 李曙光; 邵钦树; 张威; 杨琼; 董建华; 赵轶峰; 王金科

    2009-01-01

    目的:探讨Tis-1N0M0期低位直肠癌经肛门局部切除的合理性.方法: 回顾性分析1996-01-01-2002-12-30经肛门局部切除治疗的53例Tis-1N0M0期直肠癌患者的资料.其中TisN0M0 18例,T1N0M0 35例.6例T1患者接受了术后放疗.结果:所有患者术后恢复良好,住院时间7 d(5~8 d).无吻合口漏、直肠狭窄、肛瘘及其他手术并发症.术后肛门括约肌功能良好.总5年生存率为98.11%(52/53),Tis、T1期5年生存率分别为100%(18/18) 和97.14%(34/35).总5年复发率为3.78%(2/53),Tis、T1期5年复发率分别为0(0/18)、5.71%(2/35).结论:对Tis-1N0M0期低风险低位直肠癌患者,经肛门局部切除术既保证了生存率,又兼顾了患者的生存质量,是一种较为理想的术式选择.

  14. NC-code post-processor for 4-axis machining center based on NX of FANUC system%基于NX的FANUC系统四轴加工中心后置处理器构建

    Institute of Scientific and Technical Information of China (English)

    谭大庆

    2013-01-01

      A customized NC-code post-processor,based on the universal template of NX post-processor, is designed to meet the standards of 4-axis machining center equipped with FANUC CNC system.%  使用NX后置处理构建器通用模板的基础上,设计符合FANUC数控系统四轴加工中心要求的专用后置处理器。

  15. Impact of Gleason score on biochemical recurrence in patients with pT3aN0/Nx prostate cancer with positive surgical margins: a multicenter study from the Prostate Cancer Research Committee.

    Science.gov (United States)

    Song, Wan; Lee, Dong Hyeon; Jeon, Hwang Gyun; Jeong, Byong Chang; Seo, Seong Il; Lee, Hyun Moo; Choi, Han Yong; Kim, Jong Wook; Lee, SangChul; Byun, Seok-Soo; Jeong, Chang Wook; Kwak, Cheol; Cho, Jin Seon; Ahn, Hanjong; Jeon, Seong Soo

    2017-08-19

    Oncologic outcomes of patients with pT3aN0/Nx prostate cancer (PCa) with positive surgical margins (PSM) after radical prostatectomy (RP) are heterogeneous. We investigated the impact of Gleason score (GS) on biochemical recurrence (BCR) in these patients. A retrospective, multicenter study was performed on 795 patients with pT3aN0/Nx PCa with PSM after RP between January 2006 and December 2014. Clinicopathologic characteristics of patients were examined and onset of BCR was identified. Kaplan-Meier survival analysis was used to illustrate BCR-free survival (BFS) and Cox proportional hazard models were applied to identify factors predicting BCR. During the mean follow-up period of 63.9 months, BCR was identified in 274 (34.5%) patients. The 5-year BFS was 56.6% in all patients. In multivariate analysis, pathologic GS was the only significant prognostic factor for BCR in patients with pT3aN0/Nx PCa with PSM (GS 6 vs. GS 7 (3 + 4), P = 0.047; vs. GS 7 (4 + 3), P = 0.007, and vs. GS 8-10, P Nx with PSM after RP, pathologic GS is the sole independent predictor for risk stratification of BCR. These findings might be used to determine the risk and timing of BCR and to help counsel patients regarding treatment strategy and prognosis of disease on an individual basis.

  16. Chemical beam epitaxy of GaAs1-xNx using MMHy and DMHy precursors, modeled by ab initio study of GaAs(100) surfaces stability over As2, H2 and N2

    Science.gov (United States)

    Valencia, Hubert; Kangawa, Yoshihiro; Kakimoto, Koichi

    2017-06-01

    Using ab initio calculations, a simple model for GaAs1-xNx vapor-phase epitaxy on (100) surface of GaAs was created. By studying As2 and H2 molecules adsorptions and As/N atom substitutions on (100) GaAs surfaces, we obtain a relative stability diagram of all stable surfaces under varying As2, H2, and N2 conditions. We previously proved that this model could describe the vapor-phase epitaxy of GaAs1-x Nx with simple, fully decomposed, precursors. In this paper, we show that in more complex reaction conditions using monomethylhydrazine (MMHy), and dimethylhydrazine (DMHy), it is still possible to use our model to obtain an accurate description of the temperature and pressure stability domains for each surfaces, linked to chemical beam epitaxy (CBE) growth conditions. Moreover, the different N-incorporation regimes observed experimentally at different temperature can be explain and predict by our model. The use of MMHy and DMHy precursors can also be rationalized. Our model should then help to better understand the conditions needed to obtain an high quality GaAs1-xNx using vapor-phase epitaxy.

  17. Inventari faunístic dels mol·luscs continentals de la serra de Collserola (Barcelona, NE de la península ibèrica: resultat d'una revisió bibliogràfica

    Directory of Open Access Journals (Sweden)

    Bros, V.

    2009-01-01

    Full Text Available Abstract Faunistic inventary of continental molluscs from the Collserola mountains (Barcelona, NE Iberian peninsula: results from a bibliographic review.- Following the bibliographic review of articles published between 1868 and 2004 a preliminary inventary of 99 species of the malacologic fauna on the Collserola mountains was compiled. The geographic area studied is one of the natural Iberian spaces with the most bibliographic references for land and fresh water molluscs. However, much remains to be resolved concerning some of the taxa. In particular, recent locations of several species have to be verified in the Collserola Park. These include several catalogued species of great interest, such as Xerocrassa betulonensis (Bofill, 1879, Zonitoides jaccetanicus (Bourguignat, 1870 and Montserratina martorelli (Bourguignat, 1870. This bibliographic review shows the significant contribution of the malacofauna to the biodiversity of the Collserola mountains and also demonstrates its value as a useful tool for their management. Key words: Inventary, Continental mollluscs, Gasteropodes, Bivalves, Biodiversity, Collserola Park, Barcelona. Resum Inventari faunístic dels mol·luscs continentals de la serra de Collserola (Barcelona, NE de la península ibèrica: resultat d'una revisió bibliogràfica.- Mitjançant una revisió bibliogràfica de publicacions editades des de 1868 fins a 2004, s'ha elaborat un inventari preliminar de la fauna malacològica de la serra de Collserola, amb 99 espècies. L'àrea geogràfica estu­diada és un dels espais naturals ibèrics amb més referències bibliogràfiques de mol·luscs terrestres i d'aigua dolça. Tanmateix, resten per resoldre moltes llacunes sobre alguns dels tàxons. En concret, manquen localitzacions recents de diverses espècies per verificar que actualment són presents dins l'àmbit del parc de Collserola. Entre les espècies catalogades destaquen alguns elements endèmics de gran interès com

  18. Indications and results of exclusive radiotherapy in early prostate adenocarcinoma; Indications et resultats de la radiotherapie exclusive dans les formes precoces d`adenocarcinome prostatique

    Energy Technology Data Exchange (ETDEWEB)

    Bey, P. [Centre Alexis-Vautrin, 54 - Vandoeuvre-les-Nancy (France)

    1997-12-31

    Prostate adenocarcinoma incidence are rising rapidly, especially in early stages. Even if some of these carcinomas may be latent or slow growing either spontaneously or under hormonal therapy, most patients 75 years old or less presenting a localized tumor, T1b-c, T2, T3 N0, M0, whatever the grading, will require treatment with curative intent: radical prostatectomy, external beam radiation therapy (ET) and/or brachytherapy. After ERT limited to the prostate or including seminal vesicles and/or pelvic lymph nodes, the overall survival and the survival without clinical evolution at 5, 10 and 15 years are good. However survival rates without biochemical evolution are about 30 % lower and 70 % or less at 5 years for the more favorable group (T {<=} T2a and Gleason < 7 and PSA < 10 ng/mL). Brachytherapy alone yields good results for the same favorable group. In the unfavorable group (T {<=} 2c and Gleason {>=} 7 and PSA {>=} 20 ng/mL), adjuvant hormonal therapy improves survival. Conformal radiation therapy allows an increase in dose to the tumor by about 15 % without increasing complications. It can increase the biological remission rate in the intermediate group (T {>=} 2a or Gleason {>=} 7 or PSA {>=} 20 ng/mL). (author)

  19. NX模型信息管理系统的研究与开发%Research and development of NX model information management system

    Institute of Scientific and Technical Information of China (English)

    周临震

    2015-01-01

    NX模型承载了企业大部分的产品信息,随着Siemens NX系统在制造业的广泛使用,NX模型文件的数量与日俱增。为了帮助工程师管理这些日渐增多的模型文件,并且能够在不打开模型文件的情况下,获取模型中所包含的各种信息,以便能够快速检索所需的模型。以Siemens NX为设计平台,采用NX/Open开发技术,开发了NX模型信息管理系统,该系统能够管理NX模型文件,并快速获取相关信息,有效地提高了工作效率。

  20. Semiclassical distorted wave model analysis of the complete set of spin transfer coefficients for multistep direct (p,nx) at 350 MeV

    CERN Document Server

    Ogata, K; Weili, S; Kohno, M; Kawai, M

    2002-01-01

    The semiclassical distorted wave (SCDW) model of multistep direct processes is extended to calculate the double differential inclusive cross section (DDX) and the complete set of spin transfer coefficients (D sub i sub j) at energies of 350-400 MeV, taking account of one- and two-step processes. The DDX for (p,p'x) on sup 4 sup 0 Ca at 392 MeV is calculated and compared with experimental data. The calculated D sub i sub j and the DDXs for (p,nx) on sup 1 sup 2 C and sup 4 sup 0 Ca at 346 MeV for the emission angle of 22 deg. are compared with the measured ones. Features of the calculated D sub i sub j , the contribution of two-step processes in particular, are discussed in terms of the comparison with those of the DDX. The calculated DDX and D sub i sub j are analyzed in terms of the choice of the bare NN force on which the effective interaction is based, the difference in the methods of the calculation of G matrices, and the in-medium modification of effective interactions.

  1. Elastic Properties and the Band Gap of AlNxP1-x Semiconductor Alloy: A Comparative Study of Various Ab Initio Approaches

    Directory of Open Access Journals (Sweden)

    M. P. Polak

    2016-01-01

    Full Text Available Structural and elastic properties of AlNxP1-x, a novel semiconductor alloy, are studied from the first principles in both zinc-blende and wurtzite structures. Performances of the finite difference (FD method and the density functional perturbation theory (DFPT are tested and compared. Both of these methods are applied to two different approaches of alloy simulation, a supercell of 16 and 32 atoms (for zinc-blende and wurtzite structures, resp. and the alchemical mixing (AM method, where the pseudopotentials are mixed in an appropriate way to form an alloy. All elastic properties, including the elastic tensors, elastic moduli, Poisson’s ratio, B/G, and relaxation coefficient, as well as lattice parameters are calculated using all said methods. Conclusions about the use of the approaches investigated in this paper and about their performance are drawn. In addition, in both crystal structures, the band gap is studied in the whole composition range using the MBJLDA functional. The band gap bowings are unusually high, which confirms earlier reports.

  2. YAMAHA(雅马哈)NX-A01迷你扬声器系统、YDS-10 iPod底座

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    在众多厂商陆续为Apple公司的iPod推出相关的配件时,YAMAHA也及时地推出了NX-A01迷你扬声器系统和YDS-10 iPod底座两款适用于iPod的音响附件。NX—A01迷你音箱系统为立方体式设计,每边长度不到9cm,外形十分简洁时尚,使用也十分方便,只需通过3.5mm插头的音频线连接iPod以及其他便携式音频设备即可。由于采用了专有的SR-Bass低音加强技术,使得这套小小的扬声器系统也具有美妙的音质和震撼的低音。

  3. Electronic band structure and optical gain of GaNxBiyAs1-x-y/GaAs pyramidal quantum dots

    Science.gov (United States)

    Song, Zhi-Gang; Bose, Sumanta; Fan, Wei-Jun; Li, Shu-Shen

    2016-04-01

    The electronic band structure and optical gain of GaNxBiyAs1-x-y/GaAs pyramidal quantum dots (QDs) are investigated using the 16-band k ṡ p model with constant strain. The optical gain is calculated taking both homogeneous and inhomogeneous broadenings into consideration. The effective band gap falls as we increase the composition of nitrogen (N) and bismuth (Bi) and with an appropriate choice of composition we can tune the emission wavelength to span within 1.3 μm-1.55 μm, for device application in fiber technology. The extent of this red shift is more profound in QDs compared with bulk material due to quantum confinement. Other factors affecting the emission characteristics include virtual crystal, strain profile, band anticrossing (BAC), and valence band anticrossing (VBAC). The strain profile has a profound impact on the electronic structure, specially the valence band of QDs, which can be determined using the composition distribution of wave functions. All these factors eventually affect the optical gain spectrum. With an increase in QD size, we observe a red shift in the emission energy and emergence of secondary peaks owing to transitions or greater energy compared with the fundamental transition.

  4. Fabrication and magnetic properties of Sm3(Fe,Ti)29Nx/α-Fe dual-phase nanocomposite permanent magnetic material

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Sm3(Fe,Ti)29Nx/α-Fe dual-phase nanometer magnetic material was fabricated through rapid solidification, crystallization and nitridation of Sm-Fe (Ti) alloy. The effect of combination of rapid solidification and Ti alloy addition on the phase for- mation and microstructure of the Sm-Fe alloy is investigated in this paper. The mi- crostructure of amorphous phase and dual-phase nano-grain crystals before and after crystallization annealing were observed using a high-resolution transmission electron microscope (HREM). The dual-phase nano-grains after annealing were compacted together with a clear interface with the direct exchange-coupling mechanism. Different annealing processes were used to examine the melt-spun alloy. Comparison of the images of SEM showed that annealing at 750 ℃ for 10 min was most suitable to get homogeneous and nano-grains. No obvious kink was de- tected in the second quadrant of the hysteresis loop like a single hard magnet, and strong exchange coupling was found between hard magnets and soft magnets.

  5. Fabrication and magnetic properties of Sm3(Fe,Ti)29Nx/α-Fe dual-phase nanocomposite permanent magnetic material

    Institute of Scientific and Technical Information of China (English)

    CUI ChunXiang; ZHANG Ying; SUN JiBing; WANG Ru

    2007-01-01

    Sm3(Fe,Ti)29Nx/α-Fe dual-phase nanometer magnetic material was fabricated through rapid solidification, crystallization and nitridation of Sm-Fe (Ti) alloy. The effect of combination of rapid solidification and Ti alloy addition on the phase formation and microstructure of the Sm-Fe alloy is investigated in this paper. The microstructure of amorphous phase and dual-phase nano-grain crystals before and after crystallization annealing were observed using a high-resolution transmission electron microscope (HREM). The dual-phase nano-grains after annealing were compacted together with a clear interface with the direct exchange-coupling mechanism. Different annealing processes were used to examine the melt-spun alloy. Comparison of the images of SEM showed that annealing at 750℃ for 10 min was most suitable to get homogeneous and nano-grains. No obvious kink was detected in the second quadrant of the hysteresis loop like a single hard magnet, and strong exchange coupling was found between hard magnets and soft magnets.

  6. Conversion of agroindustrial residues for high poly(γ-glutamic acid) production by Bacillus subtilis NX-2 via solid-state fermentation.

    Science.gov (United States)

    Tang, Bao; Xu, Hong; Xu, Zongqi; Xu, Cen; Xu, Zheng; Lei, Peng; Qiu, Yibin; Liang, Jinfeng; Feng, Xiaohai

    2015-04-01

    Poly(γ-glutamic acid) (γ-PGA) production by Bacillus subtilis NX-2 was carried out through solid-state fermentation with dry mushroom residues (DMR) and monosodium glutamate production residues (MGPR; a substitute of glutamate) for the first time. Dry shiitake mushroom residue (DSMR) was found to be the most suitable solid substrate among these DMRs; the optimal DSMR-to-MGPR ratio was optimized as 12:8. To increase γ-PGA production, industrial waste glycerol was added as a carbon source supplement to the solid-state medium. As a result, γ-PGA production increased by 34.8%. The batch fermentation obtained an outcome of 115.6 g kg(-1) γ-PGA and 39.5×10(8) colony forming units g(-1) cells. Furthermore, a satisfactory yield of 107.7 g kg(-1) γ-PGA was achieved by compost experiment on a scale of 50 kg in open air, indicating that economically large-scale γ-PGA production was feasible. Therefore, this study provided a novel method to produce γ-PGA from abundant and low-cost agroindustrial residues. Copyright © 2015 Elsevier Ltd. All rights reserved.

  7. HPLC analysis of asymmetric dimethylarginine, symmetric dimethylarginine, homoarginine and arginine in small plasma volumes using a Gemini-NX column at high pH.

    Science.gov (United States)

    Jones, Catherine E; Darcy, Christabelle J; Woodberry, Tonia; Anstey, Nicholas M; McNeil, Yvette R

    2010-01-01

    There is increasing recognition of the clinical importance of endogenous nitric oxide synthase inhibitors in critical illness. This has highlighted the need for an accurate high performance liquid chromatography (HPLC) method for detection of asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA) in small volumes of blood. Here, the validation of an accurate, precise HPLC method for the determination of ADMA, SDMA, homoarginine and arginine concentrations in plasma is described. Solid phase extraction is followed by derivatisation with AccQ-Fluor and reversed phase separation on a Gemini-NX column at pH 9. Simultaneous detection by both UV-vis and fluorescence detectors affords extra validation. This solid phase extraction method gives absolute recoveries of more than 85% for ADMA and SDMA and relative recoveries of 102% for ADMA and 101% for SDMA. The intra-assay relative standard deviations are 2.1% and 2.3% for ADMA and SDMA, respectively, with inter-assay relative standard deviations of 2.7% and 3.1%, respectively. Advantages of this method include improved recovery of all analytes using isopropanol in the solid phase extraction; sharp, well-resolved chromatographic peaks using a high pH mobile phase; a non-endogenous internal standard, n-propyl L-arginine; and accurate and precise determination of methylated arginine concentrations from only 100microL of plasma.

  8. Magnetization enhancement due to incorporation of non-magnetic nitrogen content in (Co84Zr16Nx nano-composite films

    Directory of Open Access Journals (Sweden)

    Jitendra Singh

    2016-01-01

    Full Text Available We report the magnetic, electronic, and structural properties of nano-composite (Co84Zr16Nx or CZN films prepared by reactive co-sputter deposition method. As-deposited CZN films have shown enhancement in magnetization (Ms with incorporation of nitrogen content, which is related to the evolution of nano-composite phase. X-ray diffraction study has confirmed poly-crystalline growth of CZN films with fcc(331 and fcc(422 phases. High-resolution transmission electron microscope study reveals that CZN films are composed of ordered and crystalline ferromagnetic Co nano-clusters, which are embedded in the nano-composite matrix. Photoemission measurements show the change in the intensity near the Fermi level most likely due to defects and shift in the core-levels binding energy with nitrogen concentration. Raman spectroscopy data show an increase in the intensity of the Raman lines with nitrogen concentration upto 20%. However, the intensity is significantly lower for 30% sample. This indicates that less nitrogen or defect states are being substituted into the lattice above 20% and is consistent with the observed magnetic behavior. Our studies indicate that defects induced due to the incorporation of non-magnetic nitrogen content play a key role to enhance the magnetization.

  9. Removal of Cr(III), Ni(II) and Cu(II) by poly(gamma-glutamic acid) from Bacillus subtilis NX-2.

    Science.gov (United States)

    Yao, Jun; Xu, Hong; Wang, Jun; Jiang, Min; Ouyang, Pingkai

    2007-01-01

    Poly(gamma-glutamic acid) (gamma-PGA) derived from Bacillus subtilis NX-2 was investigated as a sorbent for heavy metal ions in batch adsorption experiments. The results showed that the heavy metal adsorption capacity of gamma-PGA enhanced with the increase of pH, in the following order: Cr(III) > Cu(II) > Ni(II), within the pH range 3-5. The Langmuir sorption model effectively described the metal sorption of y-PGA through the experiments of isotherm sorption, and it was deduced that the affinity of gamma-PGA for metals was following the sequence: Cr(III) > Cu(II) > Ni(II). Gamma-PGA was also used to trap trace amounts of heavy metals from the electroplating wastewater, which were difficult to be entirely removed by the traditional hydroxide precipitation method. The results showed that Cr(III) and Ni(II) in the electroplating effluent decreased from 3.07 and 9.46 mg/l to 0.15 and 1.01 mg/l, respectively, and the treated solutions reached the effluent standard. Therefore, gamma-PGA is satisfactory as a well biosorbent for the removal of heavy metals. The adsorption mechanism of gamma-PGA binding heavy metals was also studied using HyperChem simulation and FT-IR.

  10. 基于NX的组合机床智能化设计系统开发%Development of NX Based Intelligent Design System for Modular Machine Tools

    Institute of Scientific and Technical Information of China (English)

    陈青; 李青祝

    2013-01-01

    On the basis of study of design procedure,a framework of intelligent design system of modular machine tools was pro-posed. With the NX based intelligent design system of modular machine tools,and assistant of its design wizard supported by knowl-edge base and inference machine,designers could build parameterized control structure of modular machine tools,perform calculations of modular machine tool design,and create digital prototypes based on the parameterized models in database,according to customer re-quirements. As a result,high quality design can be made to meet market requirement swiftly.%在研究组合机床设计流程的基础上,提出组合机床智能化设计系统的框架。在NX平台上开发组合机床智能化设计系统,设计人员可依据客户需求,按照设计向导在知识库、推理机等的支撑下,建立组合机床的参数化控制结构,完成组合机床的设计计算,并调用数据库中的参数化模型,创建数字化样机,实现高质量的设计,快速满足市场需求。

  11. Heat capacities and thermodynamic functions of new nanosized ferro-chromo-manganites LaM0.5 IIFeCrMnO6.5 (MII-Mg, Ca, Sr, Ba)

    Science.gov (United States)

    Kasenov, B. K.; Kasenova, Sh. B.; Sagintaeva, Zh. I.; Turtubaeva, M. O.; Kakenov, K. S.; Esenbaeva, G. A.

    2017-03-01

    The heat capacities of nanosized ferro-chromo-manganites LaM0.5 IIFeCrMnO6.5 (MII-Mg, Ca, Sr, Ba) are measured via dynamic calorimetry in the temperature range of 298.15-673 K using an IT-S-400 instrument. It is established that the C°p f( T) function of LaM0.5 IIFeCrMnO6.5 (MII-Mg, Ca, Sr, Ba) has λ-type effects, due probably to phase transitions of the second order. Considering the temperatures of the phase transitions, equations of the heat capacity of ferro-chromo-manganites LaM0.5 IIFeCrMnO6.5 (MII-Mg, Ca, Sr, Ba) as a function of temperature are derived on the basis of experimental data. Thermodynamic functions H°( T)- H°(298.15), S°( T), and V xx( T) are calculated in the temperature range of 298.15-675 K.

  12. Fabrication of MgAl2Si2O8 : M0.01 (M = Ni2+, Cu2+, Pd2+, Pt2+ and Ru3+): catalytic effects for the reduction of 2- or 4-nitroanilines in water

    Indian Academy of Sciences (India)

    Serkan Dayan; Sevgi Öztürk; Nilgün Kayaci; Nilgun Kalaycioglu Ozpozan; Esra Öztürk

    2015-10-01

    Five new MgAl2Si2O8 : M0.01 (M = Ni2+, Cu2+, Pd2+, Pt2+ and Ru3+) materials were developed for the reduction of nitroarenes as catalysts by conventional solid state reaction at 1300°C. The prepared materials were characterized by thermal analysis, Fourier transform infrared spectroscopy, X-ray powder diffraction analysis, scanning electron microscopy, energy-dispersive X-ray analysis and nitrogen adsorption–desorption analysis. The catalytic activities of the prepared catalysts were tested in the reduction of 2- or 4-nitroanilines in aqueous media at ambient temperature in the presence of NaBH4 by UV–vis spectrophotometer. Furthermore, the MgAl2Si2O8 : M0.01 catalysts can be recovered by filtration and reused for five cycles for the reduction of 2-nitroaniline. These results show that the MgAl2Si2O8 : M0.01 catalysts can be used in practical applications in the reduction of nitroanilines.

  13. 制备TiO2-xNx薄膜陶瓷托槽的抗菌性能%TiO2-xNx thin filmson ceramic bracket surfaces:preparation and antibiotic performance

    Institute of Scientific and Technical Information of China (English)

    王建卫; 王宇; 车远倩; 朱博武; 曹宝成

    2016-01-01

      结果与结论:①TiO2-xNx薄膜为锐钛矿型,结构均匀致密,随着薄膜厚度的增加,X射线衍射峰表现为增强趋势;②厚度最高薄膜最终附着力为18.37 N,说明薄膜与托槽具有较好的附着力,可承受在口腔应用中所受到的摩擦;③镀膜后,厚度最高薄膜托槽的色泽均有所变化,但变化较小,不至于影响陶瓷托槽原有的美观特性;④TiO2-xNx薄膜陶瓷托槽对白色念珠菌、变形链球菌均有一定的抗菌性能,且随着薄膜厚度的增加抗菌性能逐渐增强,对变形链球菌的抗菌效果更明显;⑤结果表明,TiO2-xNx薄膜陶瓷托槽在不影响美观的同时,对常见口腔致龋菌和条件致病菌具有较高的抗菌作用,且与托槽具有较好的附着力。%BACKGROUND:Enamel demineralization has been plaguing doctors and patients in the fixed orthodontic treatment, so we attempt to seek an effective method of reducingitsincidence. OBJECTIVE:To prepare TiO2-xNx thin filmsat different thicknesses on the ceramic bracket surface by sol-gel method folowed by detection of antibiotic performance. METHODS:TiO2-xNx thin films at different thicknesses were prepared on the ceramic bracket surface by sol-gel method. The crystal structure, surface morphology and attachment force of these thin films were analyzed by X-ray diffraction, scanning electron microscope and multi-function material surface tester, respectively. The color changes of ceramic brackets before and after coating were evaluated through German VITA Easyshade Advance 4.0 photoelectric color comparator. Antibiotic performance of the ceramic bracket coated with TiO2-xNx thin film forCandida albicansandStreptococcus mutanswas evaluated by the flat colony counting method. RESULTS AND CONCLUSION:The prepared TiO2-xNx thin film was anatase type, which had uniform and compact structure, and its X-ray diffraction peaks were elevated with the increase of film thickness. The

  14. For or against adjuvant trastuzumab for pT1a-bN0M0 breast cancer patients with HER2-positive tumors: a meta-analysis of published literatures.

    Directory of Open Access Journals (Sweden)

    Qiong Zhou

    Full Text Available BACKGROUND: Although the prognosis of patients with small (≤1cm tumors is generally favorable, emerging data suggests that biological behavior varies between intrinsic subtypes in such patients. Furthermore, it still remains unclear whether HER2-positive pT1a-bN0M0 patients could benefit from adjuvant trastuzumab. For further evaluation, we sought to conduct a meta-analysis so as to get a better understanding of the prognosis for HER2-positive pT1a-bN0M0 patients and their survival benefit from adjuvant trastuzumab, accordingly, offering the implications for current practice. METHODS: The PubMed database, the online proceedings of the American Society of Clinical Oncology (ASCO Annual Meetings, the online proceedings of the San Antonio Breast Cancer Symposium, and the CD proceedings of the International St. Gallen Breast Cancer Conference were searched for all relevant studies published before September 2012. Relative risks (RRs were used to compare the prognosis of different intrinsic subtypes for pT1a-bN0M0 breast cancer. Analyses were also performed to estimate the association between adjuvant trastuzumab and various survival outcomes. RESULTS: With eight eligible studies identified, this meta-analysis demonstrated a deleterious effect of HER2+ phenotype on disease-free survival (DFS; RR = 3.677, 95% CI 2.606-5.189, p <0.001 and distant disease-free survival (DDFS; RR = 3.824, 95% CI 2.249-6.501, p<0.001 as compared to HR+/HER2- subgroup. However, significant difference failed to be achieved in terms of any endpoint between HER2+ and triple negative breast cancer (TNBC. Besides, a marked improvement in DFS was observed with the addition of trastuzumab for HER2-positive pT1a-bN0M0 patients (RR = 0.323, 95% CI 0.191-0.547, p<0.001. CONCLUSION: This meta-analysis clarifies that intrinsic subtypes might be a reliable marker to predict the prognosis in pT1a-bN0M0 breast cancer. Besides, even for such early stage HER2-positive

  15. Some observations on the synthesis and electrolytic properties of (Ba1-xCax (M0.9Y0.1O3, M = Ce, Zr-based samples modified with calcium

    Directory of Open Access Journals (Sweden)

    Dudek Magdalena

    2016-03-01

    Full Text Available In this paper, the impact of partial substitution of calcium for barium in (Ba1-xCax (M0.9Y0.1 O3, M = Ce, Zr on physicochemical properties of the powders and sintered samples was investigated. The powders, with various contents of calcium (x = 0, 0.02, 0.05, 0.1, were prepared by means of thermal decomposition of organometallic precursors containing EDTA. All of the BaCeO3-based powders synthesised at 1100 °C were monophasic with a rhombohedral structure, however, completely cubic BaZrO3-based solid solutions were obtained at 1200 °C. A study of the sinterability of BaZr0.9Y0.1O3 and BaCe0.9Y0.1O3-based pellets was performed under non-isothermal conditions within a temperature range of 25 to 1200 °C. The partial substitution of barium for calcium in the (Ba1-xCax (M0.9Y0.1 O3, M = Ce, Zr solid solution improved the sinterability of the samples in comparison to the initial BaCe0.9Y0.1O3 or BaZr0.9Y0.1O3. The relative density of calcium-modified BaCe0.9Y0.1O3-based samples reached approximately 95 to 97 % after sintering at 1500 °C for 2 h in air. The same level of relative density was achieved after sintering calcium-modified BaZr0.9Y0.1O3 at 1600 °C for 2 h. Analysis of the electrical conductivity from both series of investigated materials showed that the highest ionic conductivity, in air and wet 5 % H2 in Ar, was attained for the compositions of x = 0.02 to 0.05 (Ba1-xCax(M0.9Y0.1O3, M = Zr, Ce. The oxygen reduction reaction on the interface Pt│BaM0.9Y0.1O3, M = Ce, Zr was investigated using Pt microelectrodes. Selected samples of (Ba1-xCax (M0.9Y0.1O3, M = Zr, Ce were tested as ceramic electrolytes in hydrogen-oxygen solid oxide fuel cells operating at temperatures of 700 to 850 °C.

  16. Estrogen receptor (α and β) but not androgen receptor expression is correlated with recurrence, progression and survival in post prostatectomy T3N0M0 locally advanced prostate cancer in an urban Greek population

    Institute of Scientific and Technical Information of China (English)

    Georgios Megas; Michael Chrisofos; Ioannis Anastasiou; Aida Tsitlidou; Theodosia Choreftaki; Charalampos Deliveliotis

    2015-01-01

    The objective of this study was to evaluate the expression of estrogen receptors (ER(α) and ER(β)) and androgen receptors (ARs) as prognostic factors for biochemical recurrence, disease progression and survival in patients with pT3N0M0 prostate cancer (PCa) in an urban Greek population. A total of 100 consecutive patients with pT3N0M0 PCa treated with radical prostatectomy participated in the study. The mean age and follow‑up were 64.2 and 6 years, respectively. The HSCORE was used for semi‑quantitative analysis of the immunoreactivity of the receptors. The prognostic value of the ER(α) and ER(β) and AR was assessed in terms of recurrence, progression, and survival. AR expression was not associated with any of the above parameters; however, both ERs correlated with the prognosis. A univariate Cox regression analysis showed that ER(α) positive staining was significantly associated with a greater hazard for all outcomes. Increased ER(β) staining was significantly associated with a lower hazard for all outcomes in the univariate analysis. When both ER HSCORES were used for the analysis, it was found that patients with high ER(α) or low ER(β) HSCORES compared with patients with negatively stained ER(α) and >1.7 hSCORE ER(β) had 6.03, 10.93, and 10.53 times greater hazard for biochemical disease recurrence, progression of disease and death, respectively. Multiple Cox proportional hazard analyses showed that the age, preoperative prostate specific antigen, Gleason score and ERs were independent predictors of all outcomes. ER expression is an important prognosticator after radical prostatectomy in patients with pT3N0M0 PCa. By contrast, AR expression has limited prognostic value.

  17. Investigation of physicochemical properties and catalytic activity of nanostructured Ce0.7M0.3O2− (M = Mn, Fe, Co) solid solutions for CO oxidation

    Indian Academy of Sciences (India)

    P Venkataswamy; D Jampaiah; C U Aniz; Benjaram M Reddy

    2015-08-01

    In this work, nanosized Ce0.7M0.3O2− (M = Mn, Fe, Co) solid solutions were prepared by a facile coprecipitation method and evaluated for CO oxidation. The physicochemical properties of the synthesized samples were investigated by various characterization techniques, namely, XRD, ICP-OES, BET surface area, SEM-EDX, TEM and HRTEM, Raman, XPS, and H2 -TPR. XRD studies confirmed the formation of nanocrystalline single phase Ce0.7M0.3O2− solid solutions. ICP-OES analysis confirmed actual amount of metal loadings in the respective catalysts. The BET surface area of Ce0.7M0.3O2− samples significantly enhanced after the incorporation of dopants. TEM studies confirmed nanosized nature of the samples and the average particle sizes of Ce0.7M0.3O2− were found to be in the range of ~8–16 nm. Raman studies indicated that the incorporation of dopant ions into the CeO2 lattice promote the formation of more oxygen vacancies. The existence of oxygen vacancies and different oxidation states (Ce3+/Ce4+ and Mn2+/Mn3+, Fe2+/ Fe3+, and Co2+/Co3+) in the doped CeO2 samples were further confirmed from XPS investigation. TPR measurements revealed an enhanced reducibility of ceria after the incorporation of dopants. The catalytic activity results indicated that the doped CeO2 samples show excellent CO oxidation activity and the order of activity was found to be Ce0.7Mn0.3O2− > Ce0.7Fe0.3O2− > Ce0.7Co0.3O2− > CeO2. The superior CO oxidation performance of CeO2-MnOx has been attributed to a unique Ce-Mn synergistic interaction, which facilitates materials with promoted redox properties and improved oxidation activity.

  18. Study on the electrical degradation of AlGaN/GaN MIS-HEMTs induced by residual stress of SiNx passivation

    Science.gov (United States)

    Bai, Zhiyuan; Du, Jiangfeng; Liu, Yong; Xin, Qi; Liu, Yang; Yu, Qi

    2017-07-01

    In this paper, we report a new phenomenon in C-V measurement of different gate length MIS-HEMTs, which can be associated with traps character of the AlGaN/GaN interface. The analysis of DC measurement, frequency dependent capacitance-voltage measurements and simulation show that the stress from passivation layer may induce a decrease of drain output current Ids, an increase of on-resistance, serious nonlinearity of transconductance gm, and a new peak of C-V curve. The value of the peak is reduced to zero while the gate length and measure frequency are increasing to 21 μm and 1 MHz, respectively. By using conductance method, the SiNx/GaN interface traps with energy level of EC-0.42 eV to EC-0.45 eV and density of 3.2 × 1012 ∼ 5.0 × 1012 eV-1 cm-2 is obtained after passivation. According to the experimental and simulation results, formation of the acceptor-like traps with concentration of 3 × 1011 cm-2 and energy level of EC-0.37 eV under the gate on AlGaN barrier side of AlGaN/GaN interface is the main reason for the degradation after the passivation. He is currently an Associate Professor with State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, UESTC. He is the author of over 30 peer-reviewed journal papers and more than 20 conference papers. He has also hold over 20 patents. His research interests include Gallium Nitride based high-voltage power switching devices, microwave and millimeter-wave power devices and integrated technologies. Dr. Yu was a recipient of the prestigious Award of Science and Technology of China

  19. Immediate versus deferred chemotherapy after radical cystectomy in patients with pT3-pT4 or N+ M0 urothelial carcinoma of the bladder (EORTC 30994): an intergroup, open-label, randomised phase 3 trial

    DEFF Research Database (Denmark)

    Sternberg, Cora N; Skoneczna, Iwona; Kerst, J Martijn

    2015-01-01

    BACKGROUND: Patients with muscle-invasive urothelial carcinoma of the bladder have poor survival after cystectomy. The EORTC 30994 trial aimed to compare immediate versus deferred cisplatin-based combination chemotherapy after radical cystectomy in patients with pT3-pT4 or N+ M0 urothelial carcin...... patient data meta-analysis and biomarker research are needed to further elucidate the potential for survival benefit in subgroups of patients. FUNDING: Lilly, Canadian Cancer Society Research.......BACKGROUND: Patients with muscle-invasive urothelial carcinoma of the bladder have poor survival after cystectomy. The EORTC 30994 trial aimed to compare immediate versus deferred cisplatin-based combination chemotherapy after radical cystectomy in patients with pT3-pT4 or N+ M0 urothelial......, doxorubicin, and cisplatin [high-dose MVAC], or MVAC) or six cycles of deferred chemotherapy at relapse, with stratification for institution, pT category, and lymph node status according to the number of nodes dissected. Neither patients nor investigators were masked. Overall survival was the primary endpoint...

  20. D2 lymphadenectomy alone or with No.14v lymph lode dissection for curable distal gastric cancer with clinical stage t4n+m0:a randomized and multicenter phase iii study in China

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    Objective:The study is a prospective, open, randomized multicenter phase III clinical trial with two arms that aims to elucidate superiority of D2 plus No.14v lymph node dissection in comparison with standard D2 surgery in patients with curable distal gastric cancer staged cT4N+M0. hTe primary endpoint is overall survival secondary endpoint is disease-free survival. Each treatment arm includes 255 patients, providing an expected hazard ratio of 0.6.Methods:A prospective, open, randomized multicenter phase III clinical trial was designed to elucidate superiority of D2 plus No.14v lymph node dissection in improving overall survival with regard to standard D2 surgery in patients with curable distal gastric cancer staged cT4N+M0. hTe study is a multi-institutional prospective randomized controlled trial, with participating institutions including 20 specialized centers. Treatment methodsEnrolled patients are randomized to 14v- (arm A) or to 14v + (arm B).Results:End points the primary endpoint is overall survival secondary endpoint is disease-free survival.Conclusion:Results are unifnished.

  1. Experimental results concerning the metabolism of ingested iodine-131 in adult sheep under lactation; Resultats experimentaux relatifs au metabolisme de l'iode 131 ingere chez la brebis adulte en lactation

    Energy Technology Data Exchange (ETDEWEB)

    Daburon, F.; Capelle, A.; Tricaud, Y.; Nizza, P. [Commissariat a l' Energie Atomique, 92 - Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires. Departement de la Protection Sanitaire, Laboratoire-etable de Radiobiologie Appliquee

    1967-07-01

    The authors give the results of a series of experiments on metabolism of ingested iodine-131 in adult sheep under lactation; the measurement were carried out over a number of years from 1961 to 1966. The work was concerned initially with the fixation of iodine 131 in the thyroid gland, with the calculation of radiation doses absorbed and with ways of showing up any possible radiation damage in the gland. The modes of absorption of iodine 131 and its elimination through milk, urine and the faeces were then considered. Finally, a last chapter is devoted to changes in the radioactivity of the blood and of the milk, to variations of the PBI level of the blood serum as to different methods for measuring this level. (authors) [French] Les auteurs rapportent les resultats d'une serie d'experimentations relatives au metabolisme de l'iode 131 ingere chez la brebis adulte en lactation, et qui se sont etalees sur plusieurs annees, de 1961 a 1966. Les etudes ont porte d'abord sur les aspects de la fixation de l'iode 131 dans la thyroide, avec le calcul des doses de rayonnements absorbees et les moyens de mettre en evidence les radiolesions eventuelles de la glande. Ensuite ont ete traitees les modalites de l'absorption de l'iode 131 et de son elimination par le lait, les urines et les feces. Enfin un dernier chapitre a ete consacre a l'evolution de la radioactivite du sang et du lait, aux variations ainsi qu'aux divers moyens d'evaluation du taux de PBI du serum sanguin. (auteurs)

  2. Effect of Dissolved Oxygen Control Strategies on Welan Gum Fermentation by Alcaligenes sp.NX-3%溶氧调控策略对Alcaligenes sp.NX-3产威兰胶发酵过程的影响

    Institute of Scientific and Technical Information of China (English)

    万萍; 李会; 徐浩; 陈飞; 徐虹

    2011-01-01

    主要研究了发酵过程中溶氧调控策略对Alcaligenes sp.NX-3产威兰胶的影响.在7.5 L发酵罐中,首先考察了不同通气量对菌体生长、威兰胶浓度、葡萄糖消耗、威兰胶黏度等的影响.结果表明,通气量为1vvm时,有利于威兰胶浓度的提高.通过研究不同供氧水平对威兰胶发酵的影响,发现较高的溶氧水平有利于威兰胶的合成,但是不利于威兰胶黏度的提高.因此提出了低供氧-中供氧-高供氧、高供氧-中供氧-低供氧2种不同溶氧调控策略.实验结果表明:采用高供氧-中供氧-低供氧策略,能够使威兰胶浓度达到25.4 g/L,葡萄糖对威兰胶的转化率提高到0.51g/g,威兰胶黏度达到2.700 Pa·s.%The dissolved oxygen control in the production of welan gum by Alcaligenes sp. NX - 3 was investigated. Firstly, based on the analysis of the effect of various aeration rate on cell growth, welan gum concentration, glucose consumption, dissolved oxygen level, and welan gum viscosity, we confirmed that in a 7.5 L bioreactor 1 vvm aeration rate was beneficial for welan gum production. After that, the effect of different oxygen supply levels on the welan gum fermentation was studied. The results indicated that high oxygen supply level could improve the welan gum production, but it was not helpful for welan gum viscosity. Therefore, the two oxygen supply strategies:low-moderatehigh oxygen supply level and high-moderate-low oxygen supply level were proposed. The results showed that the latter was better for the welan gum fermentation. Finally, the maximum concentration of welan gum reached 25.4 g/L with a yield of 0.51 g/g and the welan gum viscosity of 2. 700 Pa · s .

  3. 美利肯Millad~ NX~(TM) 8000透明剂为Sistema聚丙烯容器赢得更多客户青睐

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    在2011芝加哥国际家庭用品博览会上,总部位于新西兰的Sistema塑胶有限公司隆重推介其全新升级的聚丙烯(PP)食品储藏容器产品线。此类产品采用了美利肯公司Millad NX^TM8000高级透明剂,具有堪比玻璃的出色清晰度,这也正是成就Sistema产品卓越品质的一个重要因素。

  4. 五轴数控加工中心UG NX后处理研究%UG NX Post-processing Research on Five-axis CNC Machining Center

    Institute of Scientific and Technical Information of China (English)

    艾建军; 刘建敏; 许东太

    2010-01-01

    介绍了UG后处理开发的方法,以一个典型的A、B摆角的五轴FANUC系统数控龙门铣床为例.设定了机床参数、程序和刀轨参数,叙述了刀库后处理方法.指出了普通的UG NX/Post Builder产生的后处理文件不符合要求时,可利用Custom Command(用户自定义命令)来处理,生成符合条件的NC程序.

  5. Simulation analysis and optimization for ackerman steering linkage of double-wishbone suspension on UG NX%基于UG NX的双横臂独立悬架转向系统的仿真分析及优化

    Institute of Scientific and Technical Information of China (English)

    张鹏; 张勇

    2014-01-01

    利用UG NX软件建立某客车双横臂独立悬架转向系统模型.基于NX CAD/Motion/Natran协同仿真平台,对转向系统结构进行系统动力学仿真,绘制前束角变化曲线,同时对内、外侧前轮转向角关系仿真曲线与阿克曼理论曲线进行对比分析.运用NX/Nastran与NX/Motion共同建立刚柔混合模型并对转向节臂进行柔性分析和拓扑优化.

  6. Non-vanishing at m -> 0 of the 1-loop self-mass of an electron of mass m propagating in a graphene-like medium in a constant external magnetic field

    CERN Document Server

    Machet, Bruno

    2016-01-01

    The 1-loop self-energy of a Dirac electron of mass m propagating in a thin medium simulating graphene in an external magnetic field B is investigated in Quantum Field Theory. Equivalence is shown with the so-called reduced QED_{3+1} on a 2-brane. Schwinger-like methods are used to calculate the self-mass \\delta m_{LLL} of the electron when it lies in the lowest Landau level. Unlike in standard QED_{3+1}, it does not vanish at the limit m -> 0 :\\delta m_{LLL} -> (\\alpha/2)\\sqrt{pi/2}sqrt{\\hbar|e|B/c^2}; all Landau levels of the virtual electron are taken into account and on mass-shell renormalization conditions are implemented. Restricting to the sole lowest Landau level of the virtual electron is explicitly shown to be inadequate. Resummations at higher orders lie beyond the scope of this work.

  7. Early and late recurrence after intentional limited resection for cT1aN0M0, non-small cell lung cancer: from a multi-institutional, retrospective analysis in Japan.

    Science.gov (United States)

    Matsumura, Yuki; Yano, Motoki; Yoshida, Junji; Koike, Terumoto; Kameyama, Kotaro; Shimamoto, Akira; Nishio, Wataru; Yoshimoto, Kentaro; Utsumi, Tomoki; Shiina, Takayuki; Watanabe, Atsushi; Yamato, Yasushi; Watanabe, Takehiro; Takahashi, Yusuke; Sonobe, Makoto; Kuroda, Hiroaki; Oda, Makoto; Inoue, Masayoshi; Tanahashi, Masayuki; Adachi, Hirofumi; Saito, Masao; Hayashi, Masataro; Otsuka, Hajime; Mizobuchi, Teruaki; Moriya, Yasumitsu; Takahashi, Mamoru; Nishikawa, Shigeto; Suzuki, Hiroyuki

    2016-09-01

    In 2015, we reported the outcomes of patients undergoing intentional limited resection (ILR) for non-small-cell lung cancer (NSCLC) from a retrospective, multi-institutional large database in Japan. Here, we analyse the clinicopathological characteristics of the patients extracted from this database with late recurrence and compare them with those with early recurrence. Of 1538 patients in the database with cT1aN0M0 NSCLC, 92 (6%) had recurrence. In this study, early recurrence was defined as recurrence within 5 years and late recurrence as recurrence beyond 5 years after surgery. We compared the clinicopathological characteristics and post-recurrence survival (PRS) between patients with early and late recurrence. Of the 92 patients with recurrence, 21 (23%) had late recurrence. Compared with the early recurrence group, there were significantly more adenocarcinomas and local recurrences in the late recurrence group (P = 0.04 for both). The 3- and 5-year PRS rates were 53 and 24%, respectively, and the median PRS period was 38 months. There were no significant differences in the PRS curves between patients with early and late recurrence (P = 0.12). Only 3 patients (0.2%) had recurrence more than 10 years after ILR. Of the 21 late-recurrence patients, 17 (81%) had tumours with a consolidation/tumour ratio (CTR) >0.25. Late recurrence occurred in 21 (23%) of 92 patients with recurrence after ILR for cT1aN0M0 NSCLC. Late recurrence was more likely to involve adenocarcinoma and local recurrence. It is thus considered reasonable to follow patients with a CTR >0.25 for 10 years after ILR. © The Author 2016. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.

  8. In situ formation of oxygen vacancy in perovskite Sr0.95Ti0.8Nb0.1M0.1O3 (M = Mn, Cr) toward efficient carbon dioxide electrolysis

    Science.gov (United States)

    Zhang, Jun; Xie, Kui; Wei, Haoshan; Qin, Qingqing; Qi, Wentao; Yang, Liming; Ruan, Cong; Wu, Yucheng

    2014-01-01

    In this work, redox-active Mn or Cr is introduced to the B site of redox stable perovskite Sr0.95Ti0.9Nb0.1O3.00 to create oxygen vacancies in situ after reduction for high-temperature CO2 electrolysis. Combined analysis using X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and thermogravimetric analysis confirms the change of the chemical formula from oxidized Sr0.95Ti0.9Nb0.1O3.00 to reduced Sr0.95Ti0.9Nb0.1O2.90 for the bare sample. By contrast, a significant concentration of oxygen vacancy is additionally formed in situ for Mn- or Cr-doped samples by reducing the oxidized Sr0.95Ti0.8Nb0.1M0.1O3.00 (M = Mn, Cr) to Sr0.95Ti0.8Nb0.1M0.1O2.85. The ionic conductivities of the Mn- and Cr-doped titanate improve by approximately 2 times higher than bare titanate in an oxidizing atmosphere and 3–6 times higher in a reducing atmosphere at intermediate temperatures. A remarkable chemical accommodation of CO2 molecules is achieved on the surface of the reduced and doped titanate, and the chemical desorption temperature reaches a common carbonate decomposition temperature. The electrical properties of the cathode materials are investigated and correlated with the electrochemical performance of the composite electrodes. Direct CO2 electrolysis at composite cathodes is investigated in solid-oxide electrolyzers. The electrode polarizations and current efficiencies are observed to be significantly improved with the Mn- or Cr-doped titanate cathodes. PMID:25403738

  9. 关于Diophantine方程(44n)x+(117n)y=(125n)z 的整数解%On the integral solutions of Diophantine equation (44n)x+(117n)y=(125n)z

    Institute of Scientific and Technical Information of China (English)

    鲁伟阳; 高丽; 郝虹斐

    2014-01-01

    在 Je´smanow´ıcz 猜想的基础上,利用初等方法证明了对任意的正整数 n, Diophantine方程(44n)x+(117n)y=(125n)z 仅有正整数解(x, y, z)=(2,2,2)。%In this paper, basing on Je´smanow´ıcz′ conjecture, it is proved that for any positive integral n the Diophantine equation (44n)x+(117n)y = (125n)z has only integral solution (x, y, z) = (2, 2, 2) by elementary method.

  10. Progressive die continuous unfold system based on NX platform%基于NX平台的级进模连续展开系统

    Institute of Scientific and Technical Information of China (English)

    于红; 章志兵; 柳玉起; 许恒建

    2012-01-01

    基于NX平台,开发了级进模连续展开系统,主要解决级进模条料设计的中间构形设计问题.系统针对不同的钣金成形情况,提供了几何展开与成形展开两种展开方式,考虑了中性层偏移问题.对于旋转变形区域,开发的几何展开功能能够实现按角度展开;对于复杂的变形区域,采用成形展开方式,将变形区展开到参考面上,并将与变形区相关联的区域跟随变形区的展开作随动旋转.其中,成形展开基于有限元逆算法,具有完整的前后处理功能.开发的展开功能,实现了条料中间构形的连续逆向展开,解决了级进模设计中的一个关键难题,突破了现有展开模块仅能实现完全展开的局限性.以一级进模设计实例,演示了开发的功能.%This progressive die continuous unfold system was developed on Siemens/NX platform, mainly to resolve the design of intermediate shapes when designing the progressive die strip layout. Considering different sheet metal forming conditions, this system provided two unfold methods, geometry unfold and forming unfold. At the same time, the system took the neutral layer offset into consideration. For the rotation deformation area, the developed geometry unfold function could realize the unfolding by angel. For the complex deform area, forming unfold function could unfold deform area to the reference plane. Then the area con-necting with the deform area would be rotated with the unfolding of the deform area. In this system, forming unfold was based on inverse approach of FEM, and had the whole functions of pre-process and post-process. The developed unfold function realized continuous reverse unfolding of intermediate shapes of die layout. This system resolved a key problem of progressive die design, and broke through the limitation of existing unfold modules which could only realize fully unfold. Finally, an example of progres-sive die design was presented to demonstrate the developed

  11. Synthesis of Li0.98M0.02Fe0.99Mg0.01PO4/C by a high-temperature solid-state method and its electrochemical properties%高温固相法合成Li0.98M0.02Fe0.99Mg0.01PO4/C及其电化学性能

    Institute of Scientific and Technical Information of China (English)

    李玲; 韩恩山; 朱令之; 卢丽莎

    2012-01-01

    通过高温固相法合成以Fe2O3为铁源,Li2CO3为锂源,柠檬酸为碳源的Li0.98M0.02Fe0.99Mgg0.01PO4/C(M=Al,Ti,V)锂离子电池正极材料,利用了X射线衍射光谱法(XRD)、循环伏安(CV)、电化学阻抗谱(EIS)和恒流充放电等实验方法研究了在铁位固定掺杂摩尔分数为1%的Mg的情况下,变换锂位掺杂金属对产物结构和电化学性能的影响.结果表明,少量金属掺杂后的产物Li0.98M0.02Fe0.99Mg0.01PO4/C其充放电容量和循环性能都比未掺杂的纯相要高.在室温下,Li0.99Al0.02Fe0.99Mg0.01PO4/C材料以0.1倍率放电时,首次比容量达到156 mAh/g,循环几次后达到160.2 mAh/g,循环性能良好,晶胞系数c/a的值与其他掺杂材料相比较高,结晶度好.%Lithium-ion battery cathode material Li0.98M0.02Fe0.99Mg0.01PO4/C (M=Al, Ti, V) was synthesized by high temperature solid state method with Fe2O3 as iron source, Li2CO3 as lithium and citrate -as carbon source. The structure and electrochemical properties were studied by X-ray diffraction spectroscopy (XRD), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and constant current charge-discharge experiments. The electrochemical properties of lithium-ion battery were studied with transformation of lithium-bit product of doping metal when iron-bit fixed molar fraction of 1% of the case of Mg. The results show that small amounts of metal doping do not affect the electrochemical performance of LiFePO4, but improve its electrochemical performance. The results analysis shows that, at room temperature the initial specific capacity of Li0.98M0.02Fe0.99Mg0.01PO4/C materials is 156 mAh/g at 0.1 C discharge rate, and after 8 cycles it up to 162.7 mAh/g with good cycle performance, and the cell factor of c/a is greater than other materials with good crystallinety.

  12. Comparison of thoracoscopic anatomical partial-lobectomy and thoracoscopic lobectomy on the patients with pT1aN0M0 peripheral non-small cell lung cancer%胸腔镜下解剖性部分肺叶切除术与肺叶切除术治疗pT1aN0M0期周围型非小细胞肺癌的近期疗效比较

    Institute of Scientific and Technical Information of China (English)

    高树庚; 邱斌; 李放; 谭锋维; 赵峻; 薛奇; 王大力; 毛友生; 牟巨伟

    2015-01-01

    Objective To compare the short-term outcomes and pulmonary function loss between thoracoscopic anatomical partial-lobectomy and thoracoscopic lobectomy on the patients with pTlaN0M0 peripheral non-small cell lung cancer.Methods The clinical data of 191 patients with pT1aN0M0 peripheral non-small cell lung cancer received thoracoscopic anatomical pneumonectomy between January 2013 and July 2013 in Department of Thoracic Surgery,Cancer Hospital Chinese Academy of Medical Sciences was analyze retrospectively.There were 71 patients underwent thoracoscopic anatomical partiallobectomy and 120 patients underwent thoracoscopic lobectomy.Demographic features,operation time,blood loss,number of dissected lymph nodes,chest tube duration,drainage volume,postoperative hospital stay,postoperative complications,two-year progress and pulmonary function loss of FEV1% (percentage of the predicted forced expiratory volume in 1 second)at 6 months were retrospectively reviewed and compared by t test,rank-sum test,x2 test and Fisher exact test.Results There were no significant differences in operation time,blood loss,number of dissected lymph nodes,chest tube duration,drainage volume,postoperative hospital stay,and postoperative complication rate (P > 0.05).The two-year progress rate between two groups did not differ significantly either (1.4% vs.1.7%,x2 =0.000,P =1.000).Pulmonary function loss of FEV1% at 6 months was significantly smaller in thoracoscopic anatomical partial lobectomy group than thoracoscopic lobectomy group (14% ±4% vs.16% ± 4%,t =2.408,P =0.017).Conclusions Thoracoscopic anatomical partial-lobectomy is safe and feasible for patients with pT1 aN0M0 peripheral non-small cell lung cancer.It could achieve equal short-term effect and reserve more pulmonary function compared with thoracoscopic lobectomy.%目的 比较胸腔镜解剖性部分肺叶切除术与胸腔镜肺叶切除术治疗pT1aN0M0周围型非小细胞肺癌的近期疗效及术后

  13. Application of Siemens NX Template File Technology in National Standard Drawing Templates%Siemens NX模板文件技术在国标制图模板中的应用

    Institute of Scientific and Technical Information of China (English)

    陈祥

    2014-01-01

    Siemens NX applications in computer-aided design has a very wide, modeling specification and modeling standards have become the key to implementation of three-dimensional CAD software. By Siemens NX template file technology, designing drawing template files which comply with national standards will help solve the issues of normalization and standardization when the software encounteres in three dimensional model to two-dimensional engineering drawings. It has a strong value in practical application.%在计算机辅助设计中Siemens NX的应用已十分广泛,建模规范及建模标准已成为企业实施三维CAD软件的关键。通过Siemens NX模板文件技术,设计符合国标的制图模板文件将有利于解决该软件在三维模型转换为二维工程图时遇到的规范化与标准化问题,具有较高的应用价值。

  14. Ab initio study of GaAs(100) surface stability over As2, H2 and N2 as a model for vapor-phase epitaxy of GaAs1-xNx

    Science.gov (United States)

    Valencia, Hubert; Kangawa, Yoshihiro; Kakimoto, Koichi

    2015-12-01

    GaAs(100) c(4×4) surfaces were examined by ab initio calculations, under As2, H2 and N2 gas mixed conditions as a model for GaAs1-xNx vapor-phase epitaxy (VPE) on GaAs(100). Using a simple model consisting of As2 and H2 molecules adsorptions and As/N atom substitutions, it was shown to be possible to examine the crystal growth behavior considering the relative stability of the resulting surfaces against the chemical potential of As2, H2 and N2 gases. Such simple model allows us to draw a picture of the temperature and pressure stability domains for each surfaces that can be linked to specific growth conditions, directly. We found that, using this simple model, it is possible to explain the different N-incorporation regimes observed experimentally at different temperatures, and to predict the transition temperature between these regimes. Additionally, a rational explanation of N-incorporation ratio for each of these regimes is provided. Our model should then lead to a better comprehension and control of the experimental conditions needed to realize a high quality VPE of GaAs1-xNx.

  15. Manganese-induced magnetic symmetry breaking and its correlation with the metal-insulator transition in bilayered S r3(Ru1-xM nx) 2O7

    Science.gov (United States)

    Zhang, Qiang; Ye, Feng; Tian, Wei; Cao, Huibo; Chi, Songxue; Hu, Biao; Diao, Zhenyu; Tennant, David A.; Jin, Rongying; Zhang, Jiandi; Plummer, Ward

    2017-06-01

    Bilayered S r3R u2O7 is an unusual metamagnetic metal with inherently antiferromagnetic (AFM) and ferromagnetic (FM) fluctuations. Partial substitution of Ru by Mn results in the establishment of a metal-insulator transition (MIT) at TMIT and AFM ordering at TM in S r3(Ru1-xM nx) 2O7 . Using elastic neutron scattering, we investigated the effect of Mn doping on the magnetic structure, in-plane magnetic correlation lengths and their correlation to the MIT in S r3(Ru1-xM nx) 2O7 (x =0.06 and 0.12). With the increase of Mn doping (x ) from 0.06 to 0.12 or the decrease of temperatures for x =0.12 , an evolution from an in-plane short-range to long-range antiferromagnetic (AFM) ground state occurs. For both compounds, the magnetic ordering has a double-stripe configuration, and the onset of magnetic correlation with an anisotropic behavior coincides with the sharp rise in electrical resistivity and specific heat. Since it does not induce a measurable lattice distortion, the double-stripe antiferromagnetic order with anisotropic spin texture breaks symmetry from a C4 v crystal lattice to a C2 v magnetic sublattice. These observations shed light on an age-old question regarding the Slater versus Mott-type MIT.

  16. Spectral-converting study of La{sub 1−m−n}Er{sub m}Yb{sub n}OCl (m=0.001–0.2, n=0–0.1) phosphors

    Energy Technology Data Exchange (ETDEWEB)

    Park, Sangmoon, E-mail: spark@silla.ac.kr [Center for Green Fusion Technology and Department of Engineering in Energy and Applied Chemistry, Silla University, Busan 617-736 (Korea, Republic of); Cho, So-Hye [Center for Materials Architecturing, Institute of Multidisciplinary Convergence of Materials, Korea Institute of Science and Technology, Seoul 130-650 (Korea, Republic of)

    2014-09-15

    Optical materials composed of La{sub 1−m−n}Er{sub m}Yb{sub n}OCl (m=0.001–0.2, n=0–0.1) solid solution were prepared via a solid-state reaction using excess NH{sub 4}Cl flux at 950 °C for 30 min. X-ray diffraction patterns of La{sub 1−m}Er{sub m}OCl were compared upon altering the molar ratios of the flux to the La{sup 3+} (Er{sup 3+}, Yb{sup 3+}) ions. By means of photoluminescence spectra, the dependence of the luminescence intensity as a function of the Er{sup 3+} content and the color CIE coordinates of the Er{sup 3+}-doped layered LaOCl compounds were also investigated under excitation by near-ultraviolet (NUV) and visible light. The spectral conversion properties of Er{sup 3+} and Er{sup 3+}–Yb{sup 3+} ions doped into LaOCl phosphors were elucidated under diode-laser irradiation of 980 nm in wavelength. The desired up-conversion of the emitting light, passing throughout the green, orange, and red regions of the spectrum, was achieved by appropriate Er{sup 3+} and/or Yb{sup 3+} concentrations in the LaOCl host structure under 980-nm-excitation light, while its mechanism in the phosphors was described by an energy-level schematic. Up-conversion emission spectra and the dependence of the emission intensity on pump power in the La{sub 0.89}Er{sub 0.1}Yb{sub 0.01}OCl phosphor were investigated under diode-laser irradiation of both wavelengths, 980 and 1550 nm. - Highlights: • Flux-assisted La{sub 1−m−n}Er{sub m}Yb{sub n}OCl (m=0.001–0.2, n=0–0.1) phosphors were prepared. • Distinctive photoluminescence properties of Er{sup 3+}-doped LaOCl were investigated. • Spectral converting properties of Er{sup 3+} and Yb{sup 3+} in LaOCl phosphors were elucidated. • Up-conversion mechanisms are proposed on the basis of an energy-level diagram. • Dependence of the emission intensity on pump power in the phosphor was investigated.

  17. A comprehensive laboratory study on the immersion freezing behavior of illite NX particles: a comparison of 17 ice nucleation measurement techniques

    Energy Technology Data Exchange (ETDEWEB)

    Hiranuma, Naruki; Augustin-Bauditz, Stefanie; Bingemer, Heinz; Budke, Carsten; Curtius, J.; Danielczok, Anja; Diehl, K.; Dreischmeier, Katharina; Ebert, Martin; Frank, F.; Hoffmann, Nadine; Kandler, Kondrad; Kiselev, Alexei; Koop, Thomas; Leisner, Thomas; Mohler, Ottmar; Nillius, Bjorn; Peckhaus, Andreas; Rose, Diana; Weinbruch, Stephan; Wex, Heike; Boose, Yvonne; DeMott, Paul J.; Hader, John D.; Hill, Thomas; Kanji, Zamin; Kulkarni, Gourihar R.; Levin, Ezra; McCluskey, Christina; Murakami, Masataka; Murray, Benjamin J.; Niedermeier, Dennis; Petters, Markus D.; O' Sullivan, Daniel; Saito, Atsushi; Schill, Gregory; Tajiri, Takuya; Tolbert, Margaret A.; Welti, Andre; Whale, Thomas; Wright, Timothy; Yamashita, Katsuya

    2015-01-01

    Immersion freezing is the most relevant heterogeneous ice nucleation mechanism 3 through which ice crystals are formed in mixed-phase clouds. In recent years, an increasing 4 number of laboratory experiments utilizing a variety of instruments have examined immersion 5 freezing activity of atmospherically relevant ice nucleating particles (INPs). However, an 6 inter-comparison of these laboratory results is a difficult task because investigators have used 7 different ice nucleation (IN) measurement methods to produce these results. A remaining 8 challenge is to explore the sensitivity and accuracy of these techniques and to understand how 9 the IN results are potentially influenced or biased by experimental parameters associated with 10 these techniques. 11 Within the framework of INUIT (Ice Nucleation research UnIT), we distributed an 12 illite rich sample (illite NX) as a representative surrogate for atmospheric mineral dust 13 particles to investigators to perform immersion freezing experiments using different IN 14 measurement methods and to obtain IN data as a function of particle concentration, 15 temperature (T), cooling rate and nucleation time. Seventeen measurement methods were 16 involved in the data inter-comparison. Experiments with seven instruments started with the 17 test sample pre-suspended in water before cooling, while ten other instruments employed 18 water vapor condensation onto dry-dispersed particles followed by immersion freezing. The 19 resulting comprehensive immersion freezing dataset was evaluated using the ice nucleation 20 active surface-site density (ns) to develop a representative ns(T) spectrum that spans a wide 21 temperature range (-37 °C < T < -11 °C) and covers nine orders of magnitude in ns. 22 Our inter-comparison results revealed a discrepancy between suspension and dry-23 dispersed particle measurements for this mineral dust. While the agreement was good below ~-24 26 °C, the ice nucleation activity, expressed in ns, was

  18. Effect of Rapid Quenching on Microstructures and Electrochemical Performances of La2Mg(Ni0.85Co0.15)9M0.1(M=B, Cr) Hydrogen Storage Alloys

    Institute of Scientific and Technical Information of China (English)

    Zhang Yanghuan; Dong Xiaoping; Wang Guoqing; Feng Meng; Ren Jiangyuan; Wang Xinlin

    2005-01-01

    The La-Mg-Ni-system (PuNi3-type) La2Mg(Ni0.85Co0.15)9M0.1 (M=B, Cr) hydrogen storage electrode alloys were prepared by casting and rapid quenching. The electrochemical performances and microstructures of the as-cast and quenched alloys were determined and measured. The effects of rapid quenching on the microstructures and electrochemical properties of the alloys were investigated in detail. The obtained results show that the alloys are composed of the (La, Mg)Ni3 phase (PuNi3-type structure) and the LaNi5 phase, as well as the small amount of the LaNi2 phase. A trace of the Ni2B phase exists in the as-cast alloy containing boron, and the Ni2B phase in the alloy nearly disappears after rapid quenching. The relative amount of each phase in the alloys depends on the quenching rate. The rapid quenching technique can greatly improve the electrochemical performance of the alloy, and the effect of rapid quenching on the activation performances of the alloys is minor. Rapid quenching enhances the cycle stability of the alloy, and the cycle life of the alloy increases with the increase of the quenching rate.

  19. Structural phase transition behaviour of Zn_4Sb_3 and its substitutional compounds(Zn_(0.98)M_(0.02))_4Sb_3(M=A1,Ga and In)at low temperatures

    Institute of Scientific and Technical Information of China (English)

    Liu Feng; Qin Xiao-Ying; Liu Mian

    2009-01-01

    Structural phase transitions of Zn_4Sb_3 and its substitutional compounds(Zn_(0.98)M_(0.02))_4Sb_3(M=A1, Ga and In)are investigated by electrical transport measurement and differential scanning calorimetry below room temperature. The results indicate that bothβ→α andα→α' phase transitions of Zn_4Sb_3 are reversible and exothermic processes, which may be explained as that both the transitions originate from the ordering of the disordered interstitial Zn and vacancies in regular sizes. The derived activation energies of β→αand α→α'phase transition processes for Zn_4Sb3 are E_1=3.9 eV and E_2=4.1 eV, respectively. Although no remarkable influence on activation energy E_2 is observedafter Al doping, Al substitution for Zn Causes El to increase to 4.6 eV, implying its suppression of β reversible αtransition to a great extent. Moreover, it is found that both β reversible α and α reversible α' transitions are completely prohibited by substitution of either In or Ga for Zn in Zn_4Sb_3.The underlying mechanisms for these phenomena are discussed.

  20. Catalytic properties of La0.8Sr0.2Co0.5M0.5O3 (M Co, Ni, Cu) in methane combustion1

    Science.gov (United States)

    Yue-Hui, Wu; Lai-Tao, Luo; Wei, Liu

    2010-03-01

    A set of perovskite-type catalysts of general formula La0.8Sr0.2Co0.5M0.5O3 (M = Co, Ni, Cu) were prepared by alanine solution combustion method and used successfully for the methane combustion. The property of these materials were characterized by XRD, and TPR measurements. The effects of transition-metal ions on site B on structure and performance of the catalysts were studied. The result indicated that the structure and catalytic activities of the catalysts can remarkably affect by transition-metal ions on site B, the decrease of the electrons filled in d orbitals in the atom on site B is propitious to increase the catalytic activity for methane combustion, and the sequences of catalysts activities are La0.8Sr0.2CoO3 τ; Ce0.8Sr0.2CoO3 τ; Nd0.8Sr0.2CoO3.

  1. Structural, electrical and electrochemical behaviours of LiNi0.4M0.1Mn1.5O4 ( = Al, Bi) as cathode material for Li-ion batteries

    Indian Academy of Sciences (India)

    G P Nayaka; J Manjanna; K C Anjaneya; P Manikandan; P Periasamy; V S Tripathi

    2014-05-01

    In order to improve the cycling performance of LiMn2O4 based cathode materials, we have synthesized a new composition, LiNi0.4M0.1Mn1.5O4 ( = Al, Bi), by the sol–gel method. The formation of solid solutions is confirmed by structural characterization using TG/DTA, XRD, FT–IR, EPR, SEM and EPR. A.c.-impedance (Nyquist plot) showed a high frequency semicircle and a sloping line in the low-frequency region. The semicircle is ascribed to the Li-ion migration through the interface from the surface layer of the particles to the electrolyte. Cyclic voltammogram (between 3.5 and 4.9 V) for these materials using CR2032 coin-type cell shows two pairs of redox peaks corresponding to two-step reversible intercalation process, wherein Li-ions occupy two different tetragonal 8a sites in spinel LiMn2O4 ( < 1) lattice. The galvanostatic charge/discharge curves for = Al (77 mAh g-1) showed reasonably good capacity retention than that of = Bi (11 mAh g-1) at the end of 17th cycle.

  2. MnOx/Al2O3/Ce0.45Zr0.45M0.10Oy (M = Mn,Y,La) catalysts used for ethanol catalytic combustion

    Institute of Scientific and Technical Information of China (English)

    Hongyan Cao; Weicong Song; Maochu Gong; Jianli Wang; Shenghui Yan; Zhimin Liu; Yaoqiang Chen

    2009-01-01

    MnOx/Al2O3/Ce0.45Zr0.45M0.10Oy (M = Mn,Y,La) catalysts were prepared by impregnation method and characterized by BET,TPR and XRD analyses.The catalytic activities toward ethanol combustion were investigated in a microreactor.The results demonstrated that the catalytic activity of MnOx/Al2O3/Ce0.50Zr0.50O2 monolithic catalyst could be improved by doping Mn,Y and La into Ce0.50Zr0.50O2.When doping Y into Ce0.50Zr0.50O2,the catalyst MnOx/Al2O3/Ce0.45Zr0.45Y0.10O1.95 showed the highest activity.The 100% conversion temperature of ethanol was 230 ℃.Furthermore,once the conversion of ethanol started,the complete conversion was quickly achieved.The doping of Mn,Y and La led to better activity for ethanol combustion and lower temperature reduction peaks in TPR profiles.The doping of Mn resulted in enhanced oxygen storage capacity (OSC),larger area of the reduction peaks,and excellent reactivity,and the doping of Y resulted in the lowest reduction temperature and the best activity.

  3. Structural, electrical and electrochemical studies of LiNi$_{0.4}M_{0.1}$Mn$_{1.5}$O$_4$ ($M$ = Co, Mg) solid solutions for lithium ion battery

    Indian Academy of Sciences (India)

    G P NAYAKA; K V PAI; J MANJANNA; K C ANJANEYA; P PERIASAMY; V S TRIPATHI

    2016-09-01

    The LiNi$_{0.4}M_{0.1}$Mn$_{1.5}$O$_4$ ($M$ = Co, Mg) solid solutions are synthesized by citric acid assisted sol–gel method and characterized by using TG/DTA, XRD, FTIR, EPR and SEM. The electrochemical characterization is carried out using CR-2032 coin type cell configuration. The cyclic voltammogram shows two pairs of redox current peaks, 4.35/3.80 V and 4.90/4.37 V vs. Li in a typical case of Co-doped sample, ascribed to two-step reversible intercalation of Li. A.c.-impedance (Nyquist plot) shows high frequency semicircle and a sloping line in the low frequency region. The semicircle is ascribed to Li-ion migration through interface from the surface layer of the particlesto electrolyte. The LiNi$_{0.4}Co_{0.1}$Mn$_{1.5}$O$_4$ shows reasonably good capacity retention in 20 cycles of galvanostatic charge/discharge cycling.

  4. Structural, electronic, mechanical, thermal and optical properties of B(P,As)1-xNx; (x = 0, 0.25, 0.5, 0.75, 1) alloys and hardness of B(P,As) under compression using DFT calculations

    Science.gov (United States)

    Viswanathan, E.; Sundareswari, M.; Jayalakshmi, D. S.; Manjula, M.; Krishnaveni, S.

    2017-09-01

    First principles calculations are carried out in order to analyze the structural, electronic, mechanical, thermal and optical properties of BP and BAs compounds by ternary alloying with nitrogen namely B(P,As)1-xNx (x = 0.25, 0.5, 0.75) alloys at ambient condition. Thereby we report the mechanical and thermal properties of B(P,As)1-xNx (x = 0.25, 0.5, 0.75) alloys namely bulk modulus, shear modulus, Young's modulus, hardness, ductile-brittle nature, elastic wave velocity, Debye temperature, melting point, etc.; optical properties of B(P)1-xNx (x = 0.25, 0.5, 0.75) and B(As)1-xNx (x = 0.25, 0.75) alloys namely the dielectric function of real and imaginary part, refractive index, extinction coefficient and reflectivity and the hardness profile of the parent compounds BP and BAs under compression. The charge density plot, density of states histograms and band structures are plotted and discussed for all the ternary alloys of the present study. The calculated results agree very well with the available literature. Analysis of the present study reveals that the ternary alloy combinations namely BP.25N.75 and BAs.25N.75 could be superhard materials; hardness of BP and BAs increases with compression.

  5. Charge-coupled substituted garnets (Y3-xCa0.5xM0.5x)Fe5O12 (M = Ce, Th): structure and stability as crystalline nuclear waste forms.

    Science.gov (United States)

    Guo, Xiaofeng; Kukkadapu, Ravi K; Lanzirotti, Antonio; Newville, Matthew; Engelhard, Mark H; Sutton, Stephen R; Navrotsky, Alexandra

    2015-04-20

    The garnet structure has been proposed as a potential crystalline nuclear waste form for accommodation of actinide elements, especially uranium (U). In this study, yttrium iron garnet (YIG) as a model garnet host was studied for the incorporation of U analogs, cerium (Ce) and thorium (Th), incorporated by a charge-coupled substitution with calcium (Ca) for yttrium (Y) in YIG, namely, 2Y(3+) = Ca(2+) + M(4+), where M(4+) = Ce(4+) or Th(4+). Single-phase garnets Y3-xCa0.5xM0.5xFe5O12 (x = 0.1-0.7) were synthesized by the citrate-nitrate combustion method. Ce was confirmed to be tetravalent by X-ray absorption spectroscopy and X-ray photoelectron spectroscopy. X-ray diffraction and (57)Fe-Mössbauer spectroscopy indicated that M(4+) and Ca(2+) cations are restricted to the c site, and the local environments of both the tetrahedral and the octahedral Fe(3+) are systematically affected by the extent of substitution. The charge-coupled substitution has advantages in incorporating Ce/Th and in stabilizing the substituted phases compared to a single substitution strategy. Enthalpies of formation of garnets were obtained by high temperature oxide melt solution calorimetry, and the enthalpies of substitution of Ce and Th were determined. The thermodynamic analysis demonstrates that the substituted garnets are entropically rather than energetically stabilized. This suggests that such garnets may form and persist in repositories at high temperature but might decompose near room temperature.

  6. Enhanced H2 separation through mixed proton-electron conducting membranes based on La5.5 W0.8 M0.2 O11.25-δ.

    Science.gov (United States)

    Escolastico, Sonia; Seeger, Janka; Roitsch, Stefan; Ivanova, Mariya; Meulenberg, Wilhelm A; Serra, José M

    2013-08-01

    La(5.5) WO11.25-δ is a proton-conducting oxide that shows high protonic conductivity, sufficient electronic conductivity, and stability in moist CO2 environments. However, the H2 flows achieved to date when using La(5.5) WO11.25-δ membranes are still below the threshold for practical application in industrial processes. With the aim of improving the H2 flow obtained with this material, La(5.5) WO11.25-δ was doped in the W position by using Re and Mo; the chosen stoichiometry was La(5.5) W0.8 M0.2 O11.25-δ . This work presents the electrochemical characterization of these two compounds under reducing conditions, the H2 separation properties, as well as the influence of the H2 concentration in the feed stream, degree of humidification, and operating temperature. Doping with both Re and Mo enabled the magnitude of H2 permeation to be enhanced, reaching unrivaled values of up to 0.095 mL min(-1) cm(-2) at 700 °C for a La(5.5) W0.8 Re0.2 O11.25-δ membrane (760 μm thick). The spent membranes were investigated by using XRD, SEM, and TEM on focused-ion beam lamellas. Furthermore, the stability in CO2 -rich and H2 S-containing atmospheres was evaluated, and the compounds were shown to be stable in the atmospheres studied.

  7. Surgical treatment of sporadic M0 bilateral renal cell carcinoma:a report of 22 cases%手术治疗散发性、无转移双侧肾细胞癌22例报道

    Institute of Scientific and Technical Information of China (English)

    韩苏军; 鲁力; 王栋; 肖泽均; 寿建忠; 李长岭

    2015-01-01

    ABSTRACT:Objective To evaluate the efficacy of surgical treatment of sporadic M0 bilateral renal cell carcinoma (BRCC) .Methods The clinical data of cases identified by pathology as sporadic M0 BRCC during 2000 and 2010 in Cancer Institute&Hospital ,Chinese Academy of Medical Sciences were retrospectively analyzed .The 5‐year disease‐free survival and renal function outcomes were reviewed .Results A total of 1 696(1 .3% ) patients surgically treated for RCC had sporadic M0 bilateral disease .Synchronous tumors were found in 16 patients (72 .7% ) and metachronous tumors in 6 (27 .3% ) .Mean age at diagnosis of the synchronous BRCC was 54 .2 ± 15 .6 .Mean age of the metachronous BRCC at diagnosis of the first and second renal cell carcinomas was 50 .8 ± 10 .4 and 57 .5 ± 12 .1 years ,respectively .A total of 47 renal tumors were found in the 22 pa‐tients ,22 tumors were on the left kidney ,and 25 on the right .The mean tumor size was 4 .3 cm in diameter (range:1 .0-12.0 cm) .Of the 47 tumors ,histology was conventional (clear cell) in 46 (97 .9% ) tumors ,papillary in 1 (2 .1% ) .All of these pa‐tients underwent staged surgical procedures (two operations) .The treatment included unilateral radical nephrectomy followed by contralateral nephron sparing surgery (RN plus NSS group ,10 cases) ,unilateral nephron sparing surgery followed by con‐tralateral radical nephrectomy (NSS plus RN group ,8 cases) ,bilateral nephron sparing surgery (NSS plus NSS group ,4 cases) . The risk of acute renal failure in RN plus NSS group ,NSS plus RN group and NSS plus NSS group was 60% ,25% and 0 ,re‐spectively ,after the second surgery .Mean follow‐up time was 72 months (range :25‐150 months) .The 5‐year disease‐free sur‐vival rate in synchronous BRCC and metachronous BRCC was 81 .8% and 50% respectively ( P= 0 .025) .Conclusions Nephron sparing surgery is a safe and effective procedure for the treatment of sporadic M0 bilateral renal cell carcinoma ,resul

  8. Charge-coupled Substituted Garnets (Y3-xCa0.5xM0.5x)Fe5O12 (M = Ce, Th): Structure and Stability as Crystalline Nuclear Waste Forms

    Energy Technology Data Exchange (ETDEWEB)

    Guo, Xiaofeng; Kukkadapu, Ravi K.; Lanzirotti, Anthony; Newville, Mathew; Engelhard, Mark H.; Sutton , Steven R.; Navrotsky, Alexandra

    2015-04-20

    The garnet structure has been proposed as a potential crystalline nuclear waste form for accommodation of actinide elements, especially uranium (U). In this study, yttrium iron garnet (YIG) as a model garnet host was studied for the incorporation of U analogs, cerium (Ce), and thorium (Th), incorporated by a charge-coupled substitution with calci-um (Ca) for yttrium (Y) in YIG, namely 2Y3+ = Ca2+ + M4+, where M4+ = Ce4+ or Th4+. Single phase garnets Y3-xCa0.5xM0.5xFe5O12, synthesized by the citrate-nitrate combustion method, were obtained up to x = 0.7. Ce was confirmed to be tetravalent by X-ray absorption spectroscopy and X-ray photoelectron spectroscopy. X-ray diffraction and 57Fe-Mössbauer spectroscopy indicated that the samples are single phase, M4+ and Ca2+ cations are restricted to the c-site, the nature of M4+ has only a minor effect on the structure, and the local environments of both the tetrahedral and octahedral Fe3+ are systematically affected by the extent of substitution, especially on the tetrahedral sublattice. The charge coupled substitution has advantages in incorporating Ce/Th and in stabilizing the substituted phases, compared to a single substitution strategy. Enthalpies of formation of garnets were obtained by high temperature oxide melt solution calorimetry, and the enthalpies of substitution of Ce and Th were determined. The thermodynamic analysis demonstrates that the substituted garnets are entropically rather than energetically stabilized. This suggests that such garnets may form and persist in repositories at high temperature but might decompose near room temperature. These structural and thermodynamic findings shed light on possible incorporation of U in this garnet system.

  9. Equations of state of iron nitrides ɛ-Fe3Nx and γ-Fe4Ny to 30 GPa and 1200 K and implication for nitrogen in the Earth's core

    Science.gov (United States)

    Litasov, K. D.; Shatskiy, A.; Ponomarev, D. S.; Gavryushkin, P. N.

    2017-05-01

    Nitrogen abundance is one of the most uncertain among all elements in the Earth's interior. Recent data indicate an affinity between Fe-nitrides and Fe-carbides in the Earth's mantle and inner core. In this work P-V-T equations of state of ɛ-Fe3N0.8 and ɛ-Fe3N1.26 (which is close to Fe7N3) have been determined using a combination of multianvil and synchrotron radiation techniques at pressures up to 30 GPa and temperatures up to 1473 K. A fit of the P-V-T data to the Vinet-Rydberg and Mie-Grüneisen-Debye equations of state yields the following thermoelastic parameters for the ɛ-Fe3N0.8: V0 = 81.44(2) Å3, KT0 = 157(3) GPa, KT' = 5.3 (fixed), θ0 = 555 K (fixed), γ0 = 1.83(1), and q = 1.34(18). For ɛ-Fe3N1.26 we obtained V0 = 86.18(2) Å3, KT0 = 163(2) GPa, KT' = 5.3(2), θ0 = 562(90) K, γ0 = 1.85(2), and q = 0.55(24). It is likely that all presumably paramagnetic ɛ-Fe3Nx with x = 0.75-1.5 have similar thermoelastic properties with a minor increase of the bulk modulus with increasing N content. The melting temperature of ɛ-Fe3Nx increases from approximately 1473 to 1573 K in the pressure range from 5 to 30 GPa. We also determined a preliminary equation of state for γ-Fe4Ny and calculated y = 0.35(2) from the data at 20-30 GPa. Combining the results with a recent experimental study on the stability of β-Fe7N3, isostructural with Fe7C3, and a theoretical study of the magnetic transitions in ɛ-Fe3Nx, we estimate the density of Fe-nitrides at the Earth's inner core conditions. Our results indicate that at 5000-6000 K, 2.0-3.2 wt % N can explain the density deficit in Earth's inner core.

  10. Annual results 2004; Resultats annuels 2004

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This 2004 annual evaluation of the french RTE company (electric power transport network) provides information on the 2004 results on: institutional information, financial results, customers and market, industrial resources, environment and consultation, human resources and international aspects. (A.L.B.)

  11. QUELQUES RESULTATS SUR LA COMMANDE DU CHEMOSTAT

    OpenAIRE

    ROBLEDO VELOSO, GONZALO

    2006-01-01

    L'Introduction est essentiellement consacrée á dresser un aperçu de la modélisation de quelques processus biologiques dans le chemostat, á introduire les notions de base de la théorie de la comniande (commandabilité, stabilisation asymptotique, ensemble atteignable) et á montrer á quoi elles correspondent dans le cas spécifique du chemostat. Pour cela nous avons partagé l'introduction en deux parties: la premiére partie décrit le modéle de compétition dans le chemostat (section 1.1) ...

  12. Resultater efter primaer stapedotomi ved otosklerose

    DEFF Research Database (Denmark)

    Wanscher, Jens; Grøntved, Aksel; Faber, Christian

    2009-01-01

    .8 dB to 31.4 dB), the bone conduction PTA (25.2 dB to 23,1 dB), air-bone gap (27.6 dB to 8.3 dB), and the speech reception threshold (44.8 dB to 22.5 dB). One operation (0.6%) resulted in severe sensory-neural hearing loss, while other types of complications were seen after 7,2% of the operations......INTRODUCTION: The purpose of this study was to assess the results after primary otosclerosis surgery at Odense University Hospital. MATERIAL AND METHODS: The study was based on information collected from a database and from patient records. A total of 154 primary stapedotomies (138 patients) were....... After thirteen operations (8.4%), reoperation was subsequently needed. CONCLUSION: Patients undergoing primary otosclerosis surgery gained a significant hearing improvement. The results of this survey matched those of larger international and Danish studies. Experienced ear surgeons can perform...

  13. Metrologie des experiences defis et resultats

    CERN Document Server

    Lasseur, C; CERN. Geneva. TS Department

    2004-01-01

    La physique des particules a toujours exigé une connaissance précise de la géométrie des équipements expérimentaux et la métrologie des détecteurs a été de concert avec celle des accélérateurs. Les premiers systèmes de détection, de dimensions modestes, demandaient déjà un positionnement le plus prés du 'théorique', les premières mesures tridimensionnelles ont été pratiquées pour la construction de BEBC, constituant les premiers défis géométriques. Les expériences LHC ne peuvent être comparées à aucune autre précédente au CERN et leurs exigences ont amené les concepteurs et constructeurs à considérer le 'survey' bien plus tôt que jamais auparavant : ce sont des dizaines de milliers de kilomètres qui ont été parcourus, théodolites et caméras digitales en guise de bagages, afin d'assurer les contrôles systématiques en usine ou en laboratoire. La métrologie des expériences occupe une place importante dans les procédures d'installation et exige toujours un degré élev...

  14. Crystal structure of Ba2(La0.727Ba0.182M0.091)MO6 (M = Nb, Sb, Bi): symmetry nuance identified in photoluminescence and IR spectroscopy studies.

    Science.gov (United States)

    Phatak, Rohan; Gupta, Santosh K; Maheshwari, Priya; Das, Amitabh; Sali, Sanjay K

    2017-01-31

    A one-third lanthanum deficiency was created in Ba2LaM(5+)O6 compounds (LaM compounds) to form Ba2La2/3M(5+)O5.5 compounds (La2/3M compounds) for M = Nb, Sb, and Bi. The compounds were prepared by a gel-combustion method using citric acid as a fuel. All the compounds were characterized by powder X-ray diffraction (XRD). The XRD analysis showed that the space group of the La2/3M compounds remains the same for the Bi and Sb samples when compared to the reported LaM compounds, except for the Nb sample. La2/3Nb and La2/3Sb adopt a rhombohedral structure with the space group R3[combining macron], whereas La2/3Bi adopts a monoclinic structure with the space group I2/m. As the positron annihilation spectroscopy (PALS) technique is sensitive to cation deficiency, it was used to detect the presence of cation vacancies in the samples, which are formed due to the decrease in the lanthanum concentration. The PALS analyses indicated that the absence of cation deficiency in the La2/3M compounds is similar to that observed in the LaM compound. Thus, the crystal structure of the La2/3M compound was modeled, such that the cation deficiency at the La site is filled by Ba(2+) and M(5+) ions, and the crystal structure formula is given as Ba2(La0.727Ba0.182M0.091)MO6. This model was confirmed by Rietveld refinement of the XRD data. The emission spectra of Eu(3+) showed a strong dependence on its local site symmetry in the host material, in which it is being doped and this can be used as a spectroscopic probe for detecting any differences in the symmetry. Comparison of the local symmetry around La(3+) cation was studied using photoluminescence (PL) by doping 2 atom% Eu(3+) in LaM and La2/3M compounds. Infrared spectroscopy (IRS) analyses were also carried out for LaM and La2/3M compounds. There was complete agreement between the PL and IRS results and they were also in concordance with the predicted crystal structure model. Interestingly in these La2/3M compounds, the equilibrium

  15. 基于NX CAD/CAM技术在复杂零件加工中的应用--以“数控程序员认证项目”中的题库为例

    Institute of Scientific and Technical Information of China (English)

    匡清; 顾涛

    2014-01-01

    以项目中的复杂零件为例,论述了NX CAD/CAM模块在实际加工中的应用过程和方法,通过UG CAD模块对零件进行实体建模设计;使用UG CAM模块对零件进行合理的加工参数设置,产生刀具轨迹,完成零件的数控加工。NX软件能在复杂零件的数控加工发挥优势,提高加工效率,保证产品质量。

  16. 基于Siemens NX平台的复杂壳体注塑模具设计与制造%CAD/CAM of Injection Mold for Some Shell Part Based on Siemens NX

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    The injection mold is designed and produced based on Siemens NX. The runner which is based on the principle of balance arrangement is determined by the simulation and analysis on Moldflow. The method im⁃proves the injection mold production quality and design efficiency. It has a reference value for production.%  采用Siemens NX平台完成了某复杂壳体注塑模的设计与制造。并通过Moldflow进行流动模拟分析。依据平衡式布置原理确定了浇注系统的设计方案。该方法缩短了复杂塑件的模具设计周期。提高了模具制造的质量。

  17. Correlation between the band positions of (SrTiO3)1-x.(LaTiO2N)x solid solutions and photocatalytic properties under visible light irradiation.

    Science.gov (United States)

    Luo, Wenjun; Li, Zhaosheng; Jiang, Xiaojun; Yu, Tao; Liu, Lifei; Chen, Xinyi; Ye, Jinhua; Zou, Zhigang

    2008-11-28

    N-doped SrTiO3 and (SrTiO3)1-x.(LaTiO2N)x samples were prepared by the thermal ammonolysis method. The photocatalytic activities of the samples were investigated in a water suspension system. Aqueous methanol solution (50 mL CH3OH + 220 mL H2O) for H2 evolution and aqueous silver nitrate solution (270 mL, 0.01 mol L(-1)) for O2 evolution were used as sacrificial reagents. The oxynitrides showed photocatalytic activities under visible light irradiation. The maximum rates of photocatalytic hydrogen and oxygen evolution under visible light irradiation (lambda > 420 nm) were 10 and 8 micromol h(-1), respectively. The samples were characterized by X-ray diffractometry, UV-Vis spectrophotometry, Fourier transform infrared spectrometry, and laser Raman spectroscopy. The unit cell edge length of (SrTiO3)1-x.(LaTiO2N)x increased linearly and their band gaps reduced from 3.18 to 2.04 eV with increasing x from 0 to 0.30. Moreover, the calculation results of (SrTiO3)0.75.(LaTiO2N)0.25 by density functional theory suggested that the band gap narrowing of the solid solutions came from the hybridization of N2p and O2p orbital. The band positions of the solid solutions were further investigated by Mott-Schottky and the onset potential method. The results suggested that the conduction band of the solid solution was lowered, which led to decrement of the hydrogen evolution rate.

  18. The number of resected lymph nodes (nLNs) combined with tumor size as a prognostic factor in patients with pathologic N0 and Nx non-small cell lung cancer.

    Science.gov (United States)

    Yang, Miaomiao; Cao, Hongxin; Guo, Xi; Zhang, Tiehong; Hu, Pingping; Du, Jiajun; Liu, Qi

    2013-01-01

    The prognostic role of the number of resected lymph nodes (nLNs) in pathologic N0 (lymph node negative) and Nx (no lymph node examined) non-small cell lung cancer (NSCLC) patients remains uncertain. Guidelines for optimal nLNs have not been established. In the current study, we evaluated whether a higher number of resected lymph nodes (LNs) results in better survival in different tumor size categories among NSCLC patients without metastatic LNs. A retrospective study was conducted. Based on nLNs (LN = 0, 1-7, >7) and tumor size (Ta: ≤ 3.5 cm, Tb: >3.5 cm) during surgery, patients were categorized into 6 groups (LN0Ta, LN0Tb, LN1-7Ta, LN1-7Tb, LN7-Ta and LN7-Tb). Survival and multivariate analyses were carried out to determine whether nLNs combined with tumor size was significant for overall survival (OS) or disease free survival (DFS) after adjusting for potential confounders. A total of 428 patients were enrolled in the study. Multivariate analysis demonstrated that nLNs, tumor size and pathological stage were the independent prognosticators for OS and DFS. Data from our study suggested that lung cancer lymphadenectomy with more than 7 LNs removed should be considered a benchmark for surgery or pathology at an early stage. Survival was significantly better in the LN7-Ta group, compared with other 5 groups (pNx NSCLC. The validation of our finding is warranted in further investigation.

  19. 化学抑制剂Woodward′s Reagent K对来源于Erwinia rhapontici NX 5蔗糖异构酶的抑制动力学%Inhibition kinetics of sucrose isomerase from Erwinia rhapontici NX-5 by Woodward′s Reagent K

    Institute of Scientific and Technical Information of China (English)

    王彦媛; 李莎; 姚忠; 徐虹

    2014-01-01

    从重组大肠杆菌E�coli BL21( pET22b palⅠ)中纯化得到来源于Erwinia rhapontici NX 5的蔗糖异构酶(sucrose isomerase,SIase,EC 5�4�99�11),以纯酶为对象考察其酶活力抑制动力学。结果表明:SIase 纯比酶活1512�77 U/mg,动力学常数 Km=260 mmol/L,Vmax=39�41μmol/(L·s)。以化学抑制剂 Woodward′s Reagent K (WRK)对重组蔗糖异构酶进行抑制反应,反应体系中随着WRK浓度的升高,SIase与底物蔗糖的亲和力常数Km增大,最大反应速度Vmax在一定范围内保持稳定。通过对SIase的抑制动力学分析可得到,WRK对SIase的抑制类型为可逆的竞争性抑制,这可能与WRK与蔗糖的结构类似,与可竞争性的结合SIase的活性中心有关。%Sucrose isomerase ( SIase,EC5�4�99�11) from Erwinia rhapontici NX⁃5 was purified from the extract of recombinant E�coli BL21 ( pET22b⁃palⅠ) culture,and the inhibition kinetics of the pure SIase was studied with chemical inhibitor Woodward′s Reagent K( WRK)�Results show that SIase had the high specific activity of 1 512�77 U/mg,as well as the Michaelis⁃Menten constants of Km=260 mmol/L and Vmax=39�41 μmol/( L·s)�Km increased as the concentration of inhibitor increased,but Vmax kept stable within limits�The inhibition of SIase by WRK was reversible and competitive, probably caused by the similar structure of WRK and sucrose.

  20. Comparison with dose-volume histograms of two conformal irradiation techniques used for the treatment of T2N0M0 nasopharyngeal cancer, one with association of photons and protons and another with photons alone; Comparaison par les histogrammes dose-volume de deux techniques d'irradiation conformationnelle des cancers du nasopharynx classes T4N0M0, l'une par photons et protons et l'autre par photons seuls

    Energy Technology Data Exchange (ETDEWEB)

    Noel, G.; Ferrand, R.; Desblancs, C.L.; Mazeron, J.J. [Centre de protontherapie, 91 - Orsay (France); Boisserie, G.; Dessard-Diana, B.; Gasowski, M.; Simon, J.M.; Baillet, F.; Mazeron, J.J. [Groupe Hospitalier la Pitie-Salpetriere, Service des Tumeurs, 75 - Paris (France); Hasboun, D. [Groupe Hospitalier la Pitie-Salpetriere, Service de Radiologie, 75 - Paris (France)

    2002-12-01

    There is a relationship between the local control rate of the nasopharyngeal cancer and the total dose delivered within tue tumoral volume. In contrast, the relation between the dose and the irradiated volume and the risk of complication is not clearly defined. That is why, in patients presenting with a locally advanced nasopharyngeal cancer, we compared the dose-volume distribution of irradiated tissues, obtained from two 3D conformal irradiation techniques. Between January 2000 and June 2001, 5 patients, 3 males and 2 females, with a median age of 32 years and presenting with a T4N0M0 nasopharyngeal cancer received a chemoradiotherapy. Radiotherapy combined photons and protons beams and the platin-based chemotherapy was delivered in three intravenous injections at d1, 22, 43 of the irradiation. To calculate the dosimetry, a CT scan and a MRI were performed in all the patients. The gross tumor volume (GTV) was delineated from the imagery, three clinical tumor volumes were defined, the CTV1 was the GTV and the whole nasopharynx, the CTV2 was the CTV plus a 10 mm-margin and the CTV3 was the CTV2 and the nodes areas (cervical and sub-clavicular). Prophylactic dose within node areas was 44 Gy. Prescribed doses within CTV2 and GTV or CTV1 were 54 Gy/CGE (Cobalt Gy Equivalent, for an EBR = 1,1) and 70 Gy/CGE, respectively. Irradiation was delivered with fractions of 1.8 or 2.0 Gy/CGE, with 44 Gy by photons and with 16 or 26 CGE by protons. According to dose-volume histograms obtained from the dosimetry planning by protons and photons and from the theoretical dosimetry by photons lonely, for the different volumes of interest, GTV, CTV2, and organs at risk (optic nerves, chiasm, internal ears, brainstem, temporal lobes), we compared the averages of the maximum, minimum and mean doses and the averages of the volumes of organs of interest encompassed by different isodoses. Calculated averages of minimum, maximum and mean doses delivered within GTV were superior for the

  1. Determination of the food consumption in eleven regions of the european community with a view to studying the radioactive contamination level: Methods used. Results of family enquiries; Determination des regimes alimentaires des populations de onze regions de la communaute europeenne en vue de l'etude des niveaux de contamination radioactive: Methodologie. Resultats des enquetes familiales

    Energy Technology Data Exchange (ETDEWEB)

    Cresta, M.; Lacourly, G. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1966-07-01

    In the present report are given the results obtained from food surveys carried out during the period 1963-1965 and involving 9000 families living in eleven regions spread out over the six European Community countries. A partial analysis of the results obtained covers a reduced sample of 3725 families; it makes it possible to fix the composition of the mean individual, monthly and annual food consumptions for each of the eleven regions. Details of the organisation of the survey, of the data processing methods and of the method of presenting the results are given in the first part of the report. the second part presents, in numerical table form, the consumption of various foodstuffs and the feeding principles for each region covered by the survey. Tables summarizing the data make it possible to compare the mean individual consumptions in the various regions studied. (author) [French] Dans le present rapport sont rassembles les premiers resultats des enquetes alimentaires effectuees pendant la periode 1963-1965, aupres de 9000 familles, dans onze regions reparties dans les six pays de la Communaute Europeenne. L'exploitation partielle des donnees obtenues porte sur un echantillon reduit a 3725 familles et permet d'etablir la composition du regime alimentaire moyen individuel, mensuel et annuel de chacune des onze regions. L'organisation des enquetes, la methode de traitement des donnees et l'expression des resultats sont exposees dans la premiere partie du rapport. La seconde reunit, sous forme de tableaux numeriques, les consommations des differents aliments et principes alimentaires par region d'enquetes. Des tableaux recapitulatifs permettent, en outre, une comparaison des consommations moyennes, individuelles des differentes regions etudiees. (auteur)

  2. Study on bonding strength of nitrogen-doped TiO2-xNx films to orthodontic brackets%掺氮TiO2-xNx薄膜托槽粘接强度的研究

    Institute of Scientific and Technical Information of China (English)

    王璞; 曹宝成; 王婧; 曹帅; 高静; 王育华

    2012-01-01

    目的 研究掺氮TiO2-xNx薄膜托槽的制备过程对粘接强度的影响.方法 应用磁控溅射法在普通金属托槽表面制备TiO2-xNx薄膜得到掺氮TiO2-xNx薄膜托槽,将掺氮TiO2-xNx薄膜托槽通入氮气后在450℃条件下退火处理2h得到退火后掺氮TiO2-xNx薄膜托槽.通过X射线衍射观察普通金属托槽及退火前、退火后掺氮TiO2-xNx薄膜托槽表面结构,通过扫描电镜(SEM)观察3种托槽网底形貌.将60颗因正畸需要已拔除的健康前磨牙按照3种托槽和2种储存条件(室温蒸馏水、冷热循环)随机分为6组,每组10颗,使用京津釉质粘合剂按要求粘接,用电子万能材料试验机测试并记录所有托槽的剪切强度,使用SPSS 17.0统计软件处理数据,并对实验结果进行单因素方差分析.结果 掺氮TiO2-xNx薄膜托槽表面为均一的锐钛矿相结构,晶粒粒径为30 nm.3种托槽的底板网格清晰,排列整齐,无明显不同.冷热循环条件下的3种托槽粘接强度均低于室温蒸馏水保存下的托槽粘接强度(P<0.01),同一处理条件下3种托槽的粘接强度差异无统计学意义(P>0.05).结论 掺氮TiO2-xNx薄膜托槽的粘接强度没有受到制备过程的影响,能够满足临床正畸治疗需要.%Objective To evaluate the effect of preparation process on the bonding strength of the nitrogen-doped TiO2-xNx films on brackets. Methods Radio frequency magnetron sputtering was used to prepare nitrogen-doped TiO2-xNx films on the surface of stainless steel brackets. Post annealing was performed on TiC>2-x Nx films at 450'C in nitrogen atmosphere for 2 h. The structures and surface morphologies of 3 types brackets, ordinary stainless steel brackets, nitrogen-doped TiO2-xNx films on brackets before annealing and the brackets after annealing, were evaluated by X-ray diffraction. The base plate of brackets was observed by scanning electron microscopy (SEM). The three types of brackets were also divided into 2 groups

  3. N2O Plasma表面处理对SiNx基IGZO-TFT性能的影响%Effect of N2O Plasma Treatment on The SiNx-based InGaZnO Thin Film Transistors

    Institute of Scientific and Technical Information of China (English)

    李俊; 周帆; 林华平; 张浩; 张建华; 蒋雪茵; 张志林

    2012-01-01

    Indium-gallium-zinc oxide thin film transistor (IGZO-TFT) was fabricated using N2O plasma treated SiNx film as gate insulator and room-temperature deposited IGZO film as active layer. Comparing with the conventional IGZO-TFT, the saturation mobility increased from 4.5 to 8.1cm2 ? V -1? S-1 , threshold voltage reduced from 11.5 to 3. 2 V, threshold swing varied from 1. 25 to 0. 9 V/dec. The trap states in the N2O plasma treated IGZO-TFT is obviously smaller than that in the conventional IGZO-TFT. Our results indicate that using N2O plasma treated SiNx film as gate insulator is an effective approach for improving IGZO-TFT performance.%采用N2O plasma处理SiNx薄膜作为绝缘层,以室温下沉积的铟镓锌氧化物(IGZO)作为有源层制备了IGZO薄膜晶体管.与常规的IGZO-TFT相比,N2O plasma处理过的IGZO-TFT的迁移率由原来的4.5 cm2·V-1·s-1增加至8.1 cm2·V-1·s-1,阈值电压由原来的11.5V减小至3.2V,亚阈值摆由原来的1.25 V/decade减小至0.9V/decade.采用C-V方法计算了两种器件的陷阱态,结果发现N2O plasma处理过的IGZO-TFT的陷阱态明显小于普通的IGZO-TFT的陷阱态,表明N2O plasma处理SiNx绝缘层是一种改善IGZO-TFT器件性能的有效方法.

  4. SEMICONDUCTOR DEVICES Comparison of electron transmittances and tunneling currents in an anisotropic TiNx/HfO2/SiO2/p-Si(100) metal—oxide—semiconductor (MOS) capacitor calculated using exponential- and Airy-wavefunction approaches and a transfer matrix method

    Science.gov (United States)

    Noor, Fatimah A.; Abdullah, Mikrajuddin; Sukirno; Khairurrijal

    2010-12-01

    Analytical expressions of electron transmittance and tunneling current in an anisotropic TiNx/HfO2/SiO2/p-Si(100) metal—oxide—semiconductor (MOS) capacitor were derived by considering the coupling of transverse and longitudinal energies of an electron. Exponential and Airy wavefunctions were utilized to obtain the electron transmittance and the electron tunneling current. A transfer matrix method, as a numerical approach, was used as a benchmark to assess the analytical approaches. It was found that there is a similarity in the transmittances calculated among exponential- and Airy-wavefunction approaches and the TMM at low electron energies. However, for high energies, only the transmittance calculated by using the Airy-wavefunction approach is the same as that evaluated by the TMM. It was also found that only the tunneling currents calculated by using the Airy-wavefunction approach are the same as those obtained under the TMM for all range of oxide voltages. Therefore, a better analytical description for the tunneling phenomenon in the MOS capacitor is given by the Airy-wavefunction approach. Moreover, the tunneling current density decreases as the titanium concentration of the TiNx metal gate increases because the electron effective mass of TiNx decreases with increasing nitrogen concentration. In addition, the mass anisotropy cannot be neglected because the tunneling currents obtained under the isotropic and anisotropic masses are very different.

  5. Study on Reaction Kinetics for Synthesis of TiC1-xNx%TiC1-xNx燃烧合成的反应动力学研究

    Institute of Scientific and Technical Information of China (English)

    林晶晶; 章倩倩; 田能超; 王剑豪; 周晓; 马李

    2012-01-01

    基于差热测试、淬熄实验、微观组织及化学成分分析,研究了TiO2-Mg-C-N2体系燃烧反应机理.结果表明,该反应过程经由多个中间反应直至最后完成,Mg在650℃时开始熔化,TiO2和Mg在750℃左右开始发生剧烈的氧化还原反应,Ti和C、N2在1100℃发生反应,TiC和TiN在1300℃固溶合成TiC11-xNx.TiO2-Mg-C-N2体系燃烧反应为复杂的固-液-气反应,其过程为:TiO2颗粒与Mg熔体以溶解-析出机制反应生成Ti和MgO;反应放出的强热诱发Ti-C-N2之间的反应,以扩散反应机制生成TiC和TiN;TiC和TiN连续固溶生成TiC1-xNx固溶体.

  6. Designing of a technological line in the context of controlling with the use of integration of the virtual controller with the mechatronics concept designer module of the PLM Siemens NX software

    Science.gov (United States)

    Herbuś, K.; Ociepka, P.

    2017-08-01

    In the work is examined the sequential control system of a technological line in the form of the final part of a system of an internal transport. The process of designing this technological line using the computer-aided approach ran concurrently in two different program environments. In the Mechatronics Concept Designer module of the PLM Siemens NX software was developed the 3D model of the technological line prepared for verification the logic interrelations implemented in the control system. For this purpose, from the whole system of the technological line, it was distinguished the sub-system of actuators and sensors, because their correct operation determines the correct operation of the whole system. Whereas in the application of the virtual controller have been implemented the algorithms of work of the planned line. Then both program environments have been integrated using the OPC server, which enables the exchange of data between the considered systems. The data on the state of the object and the data defining the way and sequence of operation of the technological line are exchanged between the virtual controller and the 3D model of the technological line in real time.

  7. Gas-Flow Tailoring Fabrication of Graphene-like Co-Nx-C Nanosheet Supported Sub-10 nm PtCo Nanoalloys as Synergistic Catalyst for Air-Cathode Microbial Fuel Cells.

    Science.gov (United States)

    Cao, Chun; Wei, Liling; Zhai, Qiran; Ci, Jiliang; Li, Weiwei; Wang, Gang; Shen, Jianquan

    2017-07-12

    In this work, we presented a novel, facile, and template-free strategy for fabricating graphene-like N-doped carbon as oxygen reduction catalyst in sustainable microbial fuel cells (MFCs) by using an ion-inducing and spontaneous gas-flow tailoring effect from a unique nitrogen-rich polymer gel precursor which has not been reported in materials science. Remarkably, by introduction of trace platinum- and cobalt- precursor in polymer gel, highly dispersed sub-10 nm PtCo nanoalloys can be in situ grown and anchored on graphene-like carbon. The as-prepared catalysts were investigated by a series of physical characterizations, electrochemical measurements, and microbial fuel cell tests. Interestingly, even with a low Pt content (5.13 wt %), the most active Co/N codoped carbon supported PtCo nanoalloys (Co-N-C/Pt) exhibited dramatically improved catalytic activity toward oxygen reduction reaction coupled with superior output power density (1008 ± 43 mW m(-2)) in MFCs, which was 29.40% higher than the state of the art Pt/C (20 wt %). Notability, the distinct catalytic activity of Co-N-C/Pt was attributed to the highly efficient synergistic catalytic effect of Co-Nx-C and PtCo nanoalloys. Therefore, Co-N-C/Pt should be a promising oxygen reduction catalyst for application in MFCs. Further, the novel strategy for graphene-like carbon also can be widely used in many other energy conversion and storage devices.

  8. Periodic c-axis modulation and crystallographic Fourier analysis of Bi 2Sr 2Ca nCu n+1O 6+2n+x ( n=0,1) single crystals with excess Bi

    Science.gov (United States)

    Ariosa, D.; Berger, H.; Schmauder, T.; Pavuna, D.; Margaritondo, G.; Christensen, S.; Kelley, R. J.; Onellion, M.

    2001-04-01

    We report on a distortion of Bi 2Sr 2Ca nCu n+1O 6+2n+x ( n=0,1) single crystals, perpendicular to the CuO 2 planes (the c-axis), for non-stoichiometric samples containing an excess of Bi. The distortion involves two parts: (a) symmetric displacements in the SrO and CuO 2 planes along the c-axis, and (b) an antisymmetric longitudinal compressive wave. The latter is revealed by observing odd harmonics in the X-ray diffraction (XRD) data. Such odd harmonics are typically extinguished for the I4/mmm space group of the exact stoichiometric phase. The antisymmetric compressive wave is reported for both BSCCO-2201 and BSCCO-2212 Bi excess samples, as well as for La-doped BSCCO-2201 samples. We have performed XRD model calculations for all samples studied, combined with Fourier analysis of the periodic c-axis modulation. The antisymmetric compressive wave was proven by reconstructing the atomic position profile from the intensity of odd XRD peaks caused by this commensurate modulation. Our results indicate preferential ordered substitution of Bi ions on nominally Sr ion positions. We also discuss implications for oxygen mobility, reversible sample doping, and electronic properties.

  9. 26 CFR 1.401(m)-0 - Table of contents.

    Science.gov (United States)

    2010-04-01

    ...) Definition of applicable contribution rate. (D) Special rule for prevailing wage contributions. (vi...) Alternative method of allocating plan year and gap period income. (F) Allocable income for...

  10. Determination of plateau slope and activity using filter measurement results and W. Chauvenet's criterion (Mage II and Fortran IV calculation programmes); Determination de pente de palier et d'activite a partir de resultats de mesure filtres selon le critere de W. Chauvenet (programmes de calcul en Mage II et Fortran IV)

    Energy Technology Data Exchange (ETDEWEB)

    Becker, A. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires, Departement d' Electronique Generale, Laboratoire de Metrologie de la Radioactivite

    1967-10-01

    In order to permit (at least partially) the objective comparison of plateau characteristics of gas-ionisation counters, plateaus which are obtained when each radioactive sample from normal LMR production is measured, a programme has been drawn up (on an electronic computer) comprising a processing section using least squares for obtaining the corrected plateaux and energies. With a view to an automatic operation of radio-measurement chains, the programme also comprises a preliminary section in which the statistical considerations of B. Peirce have been applied in the version better known as Chauvenet's criterion; this has been done with a view to eliminate measurement results which are dubious and even totally wrong. (author) [French] Pour rendre possibles (au moins partiellement) des comparaisons objectives entre paliers de caracteristiques de compteurs a ionisation gazeuse, paliers traces lors de la mesure de chaque etalon radioactif de la production courante du L.M.R., il a ete ecrit un programme (sur machine a calculer electronique) comportant une partie de traitement par les moindres carres en vue de la determination de pentes et d'activites corrigees. En prevision d'une exploitation automatique de cha es de radio-mesure, le programme comporte en outre une partie preliminaire dans laquelle des considerations statistiques dues a B. Peirce ont ete appliquees dans leur version plus connue sous le nom de critere de Chauvenet et ce dans le but d'une elimination des resultats de mesure suspects et meme veritablement aberrants. (auteur)

  11. 贵金属修饰TiO2-xNx可见光催化活性及催化机理%Visible-Light Photocatalytic Activities and Mechanism of Noble Metal Modified TiO2-xNx Photocatalyst

    Institute of Scientific and Technical Information of China (English)

    鄂磊; 徐明霞; 雅菁; 辛颖; 张春青

    2008-01-01

    采用化学沉淀法通过自掺杂制备了纳米TiO2-xNx粉体,并采用无机粘结剂法将其负载在基片上,再通过滴涂法对其进行贵金属修饰,从而得到修饰型光催化剂M/TiO2-xNx.采用XRD,XPS,UV-Vjs等测试对其进行表征,并以甲基橙溶液为光催化降解对象,研究了M/TiO2-xNx的可见光活性.研究发现在负载TiO2-xNx表面沉积Ag,Pt,Pd和Rh均可提高其光催化活性.在最佳掺杂量时,M/TiO2-xNx的可见光活性的顺序为Pd/TiO2-xNx>Pt/TiO2-xNx>Rh/TiO2-xNx>Ag/TiO2-xNx>TiO2-xNx.光催化机理分析表明M/TiO2-xNx光催化剂的活性取决于光生电子的激发方式及其转移途径.

  12. UG NX4新功能

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    2005年9月15日,UGS在其2005用户年会上发布了数字化产品开发综合软件解决方案NX第4版.据UGS主管产品部的执行副总裁Chuck Grindstaff介绍,该版本对以前版本进行了数百项以客户为中心的改进,设计产品式样、设计、分析、模拟和制造,为客户提供了创建创新产品的新方法.

  13. Nano-Imprint Lithography: Nanonex NX-2000

    Data.gov (United States)

    Federal Laboratory Consortium — Description:CORAL Name: NanoimprinterThis tool creates a pattern in a thin resist by embossing from a mold. The pattern is later transferred to the wafer by reactive...

  14. Studies on polymorphic sequence during the formation of the 1:1 ordered perovskite-type BaCa(0.335)M(0.165)Nb(0.5)O(3-δ) (M = Mn, Fe, Co) using in situ and ex situ powder X-ray diffraction.

    Science.gov (United States)

    Kan, Wang Hay; Lussier, Joey; Bieringer, Mario; Thangadurai, Venkataraman

    2014-10-06

    Here, we report a synthetic strategy to control the B-site ordering of the transition metal-doped perovskite-type oxides with the nominal formula of BaCa(0.335)M(0.165)Nb(0.5)O(3-δ) (M = Mn, Fe, Co). Variable temperature (in situ) and ex situ powder X-ray diffraction (PXRD), selected area electron diffraction (SAED), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), scanning/transmission electron microscopy (SEM/TEM), and thermogravimetic analysis (TGA) were used to understand the B-site ordering as a function of temperature. The present study shows that BaCa(0.335)M(0.165)Nb(0.5)O(3-δ) crystallizes in the B-site disordered primitive perovskite (space group s.g. Pm3̅m) at 900 °C in air, which can be converted into the B-site 1:2 ordered perovskite (s.g. P3̅m1) at 1200 °C and the B-site 1:1 ordered perovskite phase (s.g. Fm3̅m) at 1300 °C. However, the reverse reaction is not feasible when the temperature is reduced. FTIR revealed that no carbonate species were present in all three polymorphs. The chemical stability of the investigated perovskites in CO2 and H2 highly depends on the B-site cation ordering. For example, TGA confirmed that the B-site disordered primitive perovskite phase is more readily reduced in dry and wet 10% H2/90% N2 and is less stable in pure CO2 at elevated temperature, compared to the B-site 1:1 ordered perovskite-type phase of the same nominal composition.

  15. Contribution to the geochemical knowledge of the uranium-radium and thorium families in the southern Vosges. Applications of some results in the prospecting of uranium deposits; Contribution a la connaissance geochimique des familles uranium-radium et du thorium dans les Vosges meridionales. Application de certains resultats en prospection des gisements d'uranium

    Energy Technology Data Exchange (ETDEWEB)

    Jurain, G. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1962-07-01

    This work's aim is to lead to a more accurate knowledge of the geochemistry of the Uranium-Radium and Thorium families in the Southern Vosges and to apply some of the results to the prospecting of uraniferous deposits: It has been showed: a bond between Calcium-Magnesium and Uranium-Thorium in the calco-alkaline granites. The host minerals of Uranium and Thorium are hornblende, biotite, titanite and epidote. a concentration of Uranium, at present time with secular disequilibrium in a thermal zone where the satellite mineralizations form an epithermal paragenesis. a disequilibrium of the Uranium-Radium family in the supergene minerals of the lead (phosphate and vanadate) showing the present circulations of Uranium. a bond between the radon grade of the spring waters and Uranium-Radium of the rocks. Such a relation allow to realize a prospecting method based on the determination of radioactive gases from the cold spring-waters of a common country. (author) [French] L'etude presentee ici a pour but de conduire a une connaissance plus precise de la geochimie des familles Uranium-Radium et Thorium dans les Vosges meridionales et d'appliquer certains resultats a la prospection des gites uraniferes. Il a ete mis en evidence: une liaison Calcium-Magnesium et Uranium-Thorium dans des granites calco-alcalins. Les mineraux hotes de l'Uranium et du Thorium sont: la hornblende, la biotite, le sphene, l'epidote. une concentration actuelle de l'Uranium en desequilibre seculaire dans une zone thermale ou les mineralisations satellites constituent une paragenese epithermale. un desequilibre de la famille Uranium-Radium dans des mineraux supergenes du plomb (phosphates et vanadates) prouvant les circulations actuelles de l'Uranium. une liaison entre la teneur en Radon des eaux de sources et celle en Uranium-Radium des roches. Une telle liaison permet de realiser une methode de prospection fondee sur le dosage du gaz radioactif des eaux de sources

  16. Effect of metal doping into Ce0.5Zr0.5O2 on catalytic activity of MnOx/Ce0.5-xZr0.5-xM0.2xOy/Al2O3 for benzene combustion

    Institute of Scientific and Technical Information of China (English)

    YAN Shenghui; WANG Jianli; ZHONG Junbo; CHEN Yaoqiang; LIU Zhimin; CAO Hongyan; GONG Maochu

    2008-01-01

    The research investigated the effect of doping two metals separately or together into Ce0.5Zr0.5O2 on the catalytic activity of MnOx/Ce0.5-xZr0.5-xM0.2xOy/Al2O3 (M=Y, Mn, Y and Mn) for catalytic combustion of benzene. The prepared catalysts were characterized by X-ray diffraction (XRD), surface area analysis, oxygen storage capacity (OSC), and H2-temperature programmed reduction (H2-TPR). Cata-lytic test was performed on a conventional fixed bed flow reactor. The characterization results revealed that Y and Mn ions entered into the ceria-zirconia mixed oxides framework, which improved the textural properties and greatly promoted the MnOx dispersion on the support surface. The complete conversion temperature of benzene on MnOx/Ce0.4Zr0.4Y0.1Mn0.1Oy/Al2O3 was 563 K, and the selectivity of carbon dioxides was 99%. This catalyst could be applied in a wide range of GHSV and wide concentration condition, showing great potential for application.

  17. Synthesis and evaluation of effective parameters in thermal expansion coefficient of Ln0.6Sr0.4Co0.2M0.8O3− (Ln = La,Nd and M = Mn,Fe) perovskite oxide

    Indian Academy of Sciences (India)

    Fatemeh Heydari; Amir Maghsoudipour; Masoud Alizadeh; Zahra Khakpour; Masoumeh Javaheri

    2015-08-01

    In this study, oxides Ln0.6Sr0.4Co0.2M0.8O3− (Ln = La,Nd and M = Mn,Fe) have been prepared and characterized to study the influence of the different cations on thermal expansion coefficient (TEC). TEC decreases favourably with replacement of Nd3+ and Mn3+ ions in the lattice. Nd3+ leads to decreasing ionicity of the Ln–O bond and phase transition from rhombohedral to orthorhombic. Structural parameters of compounds have been determined by X-ray diffraction (XRD). FT-IR analysis has been used to compare the bond strength of different cations in the lattice. Variations of lattice parameters of compounds have been monitored by in-situ XRD at different temperatures in order to study the thermo-chemical expansivity. Concentration of oxide ion vacancy has been determined by high temperature gravimetry. The results show more stability of Mn4+ ions in high temperature in comparison with Fe4+ ions, which suppreses the tendency to lose oxygen from the lattice with the increase in temperature.

  18. La0.9Sr0.1Ga0.8M0.2O3– (M = Mn, Co, Ni, Cu or Zn): Transition metal-substituted derivatives of lanthanum–strontium–gallium–magnesium (LSGM) perovskite oxide ion conductor

    Indian Academy of Sciences (India)

    Litty Sebastian; A K Shukla; J Gopalakrishnan

    2000-06-01

    Perovskite oxides of the general formula, La0.9Sr0.1Ga0.8M0.2O3– for M = Mn, Co, Ni, Cu and Zn, have been prepared and investigated. All the oxides exhibit high electrical conductivities ( ∼ 10–2 S/cm at 800°C) comparable to that of the best perovskite oxide ion conductor, La0.9Sr0.1Ga0.8Mg0.2O2.85 (LSGM) ( ∼ 8 × 10–2 S/cm at 800°C). While M = Mn, Co, Ni, Cu members appear to be mixed conductors with a variable electronic contribution to the conductivity, especially at high oxygen partial pressures (O2 \\geq 1 atm), arising from mixed-valency of the transition metals, the M = Zn(II) phase is a pure oxide ion conductor exhibiting a conductivity ( ∼ 1.5 × 10–2 S/cm at 800°C) that is slightly lower than that of LSGM. The lower conductivity of the M = Zn(II) derivative could be due to the preference of Zn(II) for a tetrahedral oxygen coordination.

  19. Design, development of water tank-type lung phantom and dosimetric verification in institutions participating in a phase I study of stereotactic body radiation therapy in patients with T2N0M0 non-small cell lung cancer: Japan Clinical Oncology Group trial (JCOG0702).

    Science.gov (United States)

    Nishio, Teiji; Shirato, Hiroki; Ishikawa, Masayori; Miyabe, Yuki; Kito, Satoshi; Narita, Yuichirou; Onimaru, Rikiya; Ishikura, Satoshi; Ito, Yoshinori; Hiraoka, Masahiro

    2014-05-01

    A domestic multicenter phase I study of stereotactic body radiotherapy (SBRT) for T2N0M0 non-small cell lung cancer in inoperable patients or elderly patients who refused surgery was initiated as the Japan Clinical Oncology Group trial (JCOG0702) in Japan. Prior to the clinical study, the accuracy of dose calculation in radiation treatment-planning systems was surveyed in participating institutions, and differences in the irradiating dose between the institutions were investigated. We developed a water tank-type lung phantom appropriate for verification of the exposure dose in lung SBRT. Using this water tank-type lung phantom, the dose calculated in the radiation treatment-planning system and the measured dose using a free air ionization chamber and dosimetric film were compared in a visiting survey of the seven institutions participating in the clinical study. In all participating institutions, differences between the calculated and the measured dose in the irradiation plan were as follows: the accuracy of the absolute dose in the center of the simulated tumor measured using a free air ionization chamber was within 2%, the mean gamma value was ≤ 0.47 on gamma analysis following the local dose criteria, and the pass rate was >87% for 3%/3 mm from measurement of dose distribution with dosimetric film. These findings confirmed the accuracy of delivery doses in the institutions participating in the clinical study, so that a study with integration of the institutions could be initiated.

  20. Determination of diets for the populations of eleven regions of the European community to be used for obtaining radioactive contamination levels. First results concerning the food consumption of individuals classified in nine age-groups; Determination des regimes alimentaires des populations de onze regions de la Communaute Europenne et vue de l'etude des niveaux de contamination radioactive. Premiere serie de resultats concernant la consommation alimentaire des individus groupes en neuf classes d'ages

    Energy Technology Data Exchange (ETDEWEB)

    Ledermann, S.; Lacourly, G.; Garnier, A.; Cresta, M.; Lombardo, E. [Commissariat a l' Energie Atomique, 92 - Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1968-07-01

    The present document continues the report CEA-R--2979 - EUR--2768-f. The processing of the data given by the family food enquiry carried out in eleven regions of the European Community, has permitted to determine the food consumption of individuals classified in nine age-groups, in order to study the radioactive contamination levels in the food-chain. The used statistical method is described, and the obtained results are presented in form of double-entry tables giving for each region and for each age-group the mean weekly food-consumption and the contribution of each diet in nutrition principles, in minerals, vitamins, trace elements and calories. (authors) [French] Ce rapport fait suite au rapport CEA-R--2979 - EUR--2768-f. Le traitement de l'information apportee par les enquetes alimentaires familiales realisees dans onze regions de la Communaute Europeenne a permis de determiner les consommations alimentaires des individus groupes en neuf classes d'age, en vue de l'etude des niveaux de contamination radioactive dans les chaines alimentaires. La methode statistique employee est decrite et les resultats obtenus sont presentes sous forme de tableaux a double entree donnant pour chacune des regions etudiees et pour chacune des neuf classes d'age, les consommations moyennes hebdomadaires, ainsi que les apports en principes nutritifs, mineraux, vitamines et oligo-elements, et calories de chaque regime. (auteurs)

  1. Cochleaimplantationer hos voksne. Resultater og betydning for kommunikation og livskvalitet

    DEFF Research Database (Denmark)

    Faber, C E; Grøntved, A M

    2000-01-01

    The aim of this study was to assess the benefits and complications from cochlear implantation and to evaluate the average implant usage per day. Ten profoundly deaf adults were implanted during the period April 1994 to September 1997. The patients answered questionnaires one year or more after...... receiving their cochlear implants. The average implant usage per day was 16 hours. The patients would again opt for a cochlear implant and would recommend a cochlear implant for a deaf friend. A paired comparison showed that the implants led to statistically significant improvement in a number of factors...

  2. Intravaskulaer ultralyd og perkutan transluminal angioplastik. Praeliminaere resultater

    DEFF Research Database (Denmark)

    Vogt, K C; Rasmussen, John Bøje Grønvall; Just, S R;

    1995-01-01

    Intravascular ultrasound is a new imaging modality which enables cross-sectional images of blood vessels. These preliminary results of intravascular ultrasound used before and after percutaneous transluminal angioplasty (PTA) in 19 patients, confirm earlier reports of the ability to distinguish...... by measuring the reduction of stenosis and increment of the luminal area. The increased luminal area following PTA was partly due to stretching of the artery and partly due to compression of the atheroma. We found a correlation between the amount of calcium in the plaque and the size of the dissection after...

  3. Prevalence De La Migraine A Madagascar : Resultats D\\'une ...

    African Journals Online (AJOL)

    Du fait de sa fréquence élevée, la migraine pose à Madagascar, un problème de santé ... Epidemiological data on migraine are rare or discrepant in the malagasy ... but neither with lower instruction (p >0.1), nor with the big family size (p >0.1).

  4. Screening for lungecancer med lavdosis CT - Danske og udenlandske resultater

    DEFF Research Database (Denmark)

    Saghir, Z.; Dirksen, A.; Ashraf, H.;

    2015-01-01

    Lung cancer is the cancer type that causes the largest number of deaths in Denmark. With advances in medical imaging and widespread use of computed tomography (CT), it is possible to detect even small abnormalities in lung tissue. This has led to a great interest in lung cancer screening with low......-dose CT and launching of randomised screening trials worldwide. This paper gives an overview of the current lung cancer screening trials in Denmark and internationally and focuses on main lung cancer findings and mortality results.......Lung cancer is the cancer type that causes the largest number of deaths in Denmark. With advances in medical imaging and widespread use of computed tomography (CT), it is possible to detect even small abnormalities in lung tissue. This has led to a great interest in lung cancer screening with low...

  5. By og Byg Resultater 005.Facaderenovering med glas

    DEFF Research Database (Denmark)

    Wittchen, Kim Bjarne

    Målinger i et forsøgsbyggeri med glasinddækkede altaner viser, at det er muligt at opnå store energibesparelser. Dette er sikret ved glasinddækkede altaner, luftsolfanger til forvarmning af ventilationsluften, udskiftning af vinduerne og opsætning af energialarmer. Samtidig har det været muligt a...

  6. Results. Building integrated energy supply; Resultater. Bygningsintegreret energiforsyning

    Energy Technology Data Exchange (ETDEWEB)

    Jensen, Rasmus L.; Noergaard, J.; Daniels, O.; Justesen, R.O.

    2011-08-15

    In the future, buildings will not only act as consumers of energy but as producers as well. For these ''prosumers'', energy production by use of solar panels, photovoltaics and heat pumps etc will be essential. The objective of this project was to find the most optimal combinations of building insulation and use of renewable energy sources in existing buildings in terms of economics and climate impacts. Five houses were analyzed based on different personal load, consumption profiles, solar orientation and proposed building envelope improvements and use of combinations of renewable energy systems. The analysis was conducted by making a large number of simulations of which the best combinations were selected. The final result takes form of a single top-50 list with the best combinations of energy systems according to CO{sub 2} emission, energy consumption and economics. The present report contains the conclusions of and comments on the project's results. (ln)

  7. Lovende resultater ved konservativ behandling med dynamisk mobilisering efter akillesseneruptur

    DEFF Research Database (Denmark)

    Tengberg, Peter Toft; Barfod, Kristoffer Weisskirchner; Krasheninnikoff, Michael

    2011-01-01

    There is no consensus regarding the optimal treatment of acute Achilles tendon ruptures. This review of the literature on the subject shows a significantly higher rate of reruptures (RR) in the conservatively treated group compared to the surgically treated group when the foot is immobilised...

  8. Enova results and activities report 2008; Resultat- og aktivitetsrapport 2008

    Energy Technology Data Exchange (ETDEWEB)

    2009-07-01

    Enova's results in 2008 was 2,15 TWh in saved and produces renewable energy. Totally Enova has contributed by activate environmental friendly energy projects equivalent 11,6 TWh up to 2009. This is a good step towards Enova's long-term goal and corresponding to an amount of approximately 10 % of Norway's united consumption of energy throughout a year. (AG). refs., figs., tabs., ills

  9. Consolidated results 2000. Forecasts 2001; Resultats consolides 2000. Perspectives 2001

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This document presents an economic analysis of the Group Gaz De France consolidated results for the year 2000. The main topics are the evolution of the energy market, the great economic growth for the five businesses of the Group (exploration-production, trade, transport, distribution and services), financial results affected by the supply costs increase, the position reinforcement among the gas leaders in Europe and the highlights of 2000. (A.L.B.)

  10. RTE annual results 2005; RTE resultats annuels 2005

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    This annual report presents the results of the RTE (Electric power Transport Network). The year 2005 is marked by the new status of RTE, as a limited company. The financial good performances, the market, the open network, the environmental policy, the human resources and the european and international relations are discussed. (A.L.B.)

  11. First half 2005 financial results; Resultats du 1. semestre 2005

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    With manufacturing facilities in over 40 countries and a sales network in over 100, AREVA offers customers technological solutions for nuclear power generation and electricity transmission and distribution. The group also provides interconnect systems to the telecommunications, computer and automotive markets. This document presents the first half 2005 financial results of the group: 1 - overall performance: sales revenue, operating income, consolidated net income, operating cash flow, balance sheet; 2 - outlook; 3 - performance by business division: front-end division, reactors and services division, back end division, transmission and distribution division, connectors division.

  12. AREVA 2010 annual results; AREVA resultats annuels 2010

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    Areva's 44-billion euro backlog at the end of 2010 gives the group excellent visibility, enabling it to confirm its outlook for 2012: 12 billion euros in revenue, double-digit operating margin and significantly positive free operating cash flow. Revenue rose by 575 million euros in 2010, or 6.7%, in comparison to 2009 and operating income excluding particular items improved by 201 million euros, nearly 2 points of revenue. In the past two years, Areva has raised 7.1 billion euros and secured its liquidity to ensure its development. In 2011, Areva is going to simplify the group's capital structure by listing ordinary shares of AREVA. At that time, the group may launch the employee share-holding plan, something it has ardently sought for several years as a way for its employees to share in AREVA's growth. The consolidated backlog stood at 44.204 billion euros at December 31, 2010, up 2.0% compared with that at December 31, 2009. The group's consolidated revenue came to 9.104 billion euros in 2010, up 6.7% on a reported basis and 5.1% like-for-like compared with 2009. Excluding particular items, operating income rose by 1.9 point, going from 3.9% in 2009 to 5.8% in 2010, giving operating income of 532 million euros (331 million euros in 2009). Net income attributable to equity owners of the parent came to 883 million euros in 2010, an increase of 331 million euros compared with 2009. Operating cash flow before capex was 923 million euros, an increase of 548 million euros compared with 2009, when it was 375 million euros, due to the visible improvement in EBITDA and working capital requirement. The change in gross capex (excluding acquisitions) from 1.780 billion euros in 2009 to 1.966 billion euros in 2010 is due to the ramp-up of construction programs, particularly in Enrichment. In 2010, almost 60% of the group's capital spending was on sites in France. The acquisitions made in Renewable Energies in 2010 in the amount of 210 million euros (100% of Ausra and the remaining 49% of Multibrid) bring total gross capex to 2.176 billion euros, compared with 1.808 billion euros in 2009. Net capex came to 2.013 million euros in 2010, compared with 1.294 billion euros in 2009, reflecting asset disposals of 163 million euros in 2010 (mainly from the sale of 2% of the Georges Besse II plant), compared with 514 million euros in 2009. Free operating cash flow before tax went from -919 million euros in 2009 to -1.090 billion euros in 2010. Part of the increase in net capex is financed by the improved EBITDA and working capital requirement. The group's net financial debt comes to 3.672 billion euros at December 31, 2010 (based on the 2007 valuation of the debt to Siemens i.e. 2.049 billion euros, plus accrued interest) compared with 6.193 billion euros at December 31, 2009. The 2.521-billion euro reduction is due to the cash generated by the disposal of the Transmission and Distribution business (3.124 billion euros), by the transactions on Safran securities in the amount of 636 million euros, and by the 900-million euro capital increase, which helped largely offset the free operating cash flow described above, as well as the payment of dividends for 2009 to AREVA SA shareholders in the amount of 250 million euros. These amounts should be compared with equity of 9.578 billion euros at December 31, 2010, compared with 7.574 billion at year-end 2009. The group's gearing thus went from 45% in 2009 to 28% in 2010, illustrating the notable strengthening of the group's balance sheet. As part of this process, AREVA's Supervisory Board will not propose to the Annual General Meeting of Shareholders the payment of a dividend for 2010. In addition, the group's liquidity was reinforced in 2010 by a fourth bond issue of 750 million euros. Excluding the debt to Siemens, the group has no major reimbursement due before 2016

  13. PubMed Medline 7: Gestionar els resultats. Gener 2011

    OpenAIRE

    2011-01-01

    També podeu consultar altres tutorials sobre el PubMed: 1. PubMed Medline: Accés, http://hdl.handle.net/2445/15122; 2. PubMed Medline: Cerca bàsica, http://hdl.handle.net/2445/15123; 3. PubMed Medline: Elements de cerca i límits, http://hdl.handle.net/2445/15124; 4. PubMed Medline: Matèries MeSH, http://hdl.handle.net/2445/15125; 5. PubMed Medline: Cerca avançada, http://hdl.handle.net/2445/15126; 6. PubMed Medline: Exemple de cerca avançada, http://hdl.handle.net/2445/15127; 8. PubMed Medli...

  14. Framatome announces its 1997 results; Framatome annonce ses resultats 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-05-18

    This press dossier presents the 1997 financial year of Framatome group: turnover and key-numbers, results, sectoral analysis (nuclear engineering (nuclear realizations, fuels, services and equipments); connectors engineering (automotive, electrical, electronic, interconnection and microelectronic industries), industrial equipments). Then, the 1998 objectives are presented with the strategy of the group (Chinese, central and eastern Europe nuclear programs, French-German joint EPR project, services and nuclear fuels, connectors engineering, industrial equipments, manpower, research and development programs). This part is followed by a presentation of some 1997 events and by the text of the press conference from May 18, 1998 which presented the activities of the group, its competences and know-how in the nuclear domain. (J.S.)

  15. Overvåking av norsk kosthold - metoder og resultater

    Directory of Open Access Journals (Sweden)

    Lars Johansson

    2009-11-01

    Full Text Available  SAMMENDRAGKunnskap om endringer i matvarenes sammensetning og befolkningens kosthold er grunnleggende for utformingog oppfølging av en helsefremmende mat- og ernæringspolitikk. Dagens system for overvåking avkostholdet bygger først og fremst på en matvaredatabase og opplysninger om forbruket av matvarer fra tretyper datasett; matforsyningsstatistikk, forbruksundersøkelser og kostholdsundersøkelser. Det avgis årlig envurdering av utviklingen i norsk kosthold i forhold til mat- og ernæringspolitiske målsettinger. Det norskesystemet for overvåking av kostholdet er blitt betydelig styrket i løpet av 1990-årene ved innføringen avregelmessige kostholdsundersøkelser blant landsrepresentative utvalg av befolkningen i ulike aldersgrupperog økte ressurser til analyse av næringsinnholdet i matvarer. Det er imidlertid beskjedent sammenlignet meddatainnsamlingen i land som USA og Storbritannia. Det norske overvåkingssystemet er forsatt i enutviklingsfase, og det må justeres og kompletteres etter hvert. Dessuten vil det arbeides med å kvalitetssikredatainnsamlingen.Johansson L. Surveillance of the diet in Norway – methods and results.Nor J Epidemiol ENGLISH SUMMARYKnowledge about changes in composition and intake of foods, as well as changes in the prevalence of dietrelatedhealth problems is fundamental for an effective food and nutrition policy. The National Council onNutrition and Physical Activity is responsible for evaluating changes in the diet. Annually the Council publishesreports about trends in the Norwegian diet, and suggests measures to improve the diet. The Council, incooperation with the National Food Authority and the Institute for Nutrition Research, University of Oslo,has established a national food and dietary surveillance system. This system is mainly based on a fooddatabase and food consumption data. The food consumption data include three principally different datasets: food supplies, household consumption surveys, and dietary surveys. Food supplies have been publishedannually since 1952. Household consumption surveys among random nation-wide samples of privatehouseholds have been performed annually by Statistics Norway since 1975. Dietary surveys were includedon a regular basis in the surveillance system in 1993 when the first Norwegian nation-wide dietary surveysamong students 13 and 18 years old and the general population aged 16-79 years were conducted. Thesecond dietary survey among the general population was made in 1997, and the first survey among infantswas performed in 1998-99. The second survey among children 5-13 years is planned for 2000-2001. TheNorwegian surveillance system has been considerably improved during the 1990s. However, the collectionof dietary data is still modest compared to what is done in the USA and Great Britain. The system isdeveloping, and will be adjusted and supplemented. Quality assurance of methods will be given priority.2000; 10 (1: 31-42.

  16. Perkutan indsaettelse af aortaklap - initiale erfaringer og resultater

    DEFF Research Database (Denmark)

    Olsen, Lene Kjaer; Engstrøm, Thomas; Wachtell, Kristian

    2009-01-01

    to advanced age and comorbidity. The aim of this study was to evaluate the results of percutaneous aortic valve replacement - a new treatment modality for patients with inoperable AS. MATERIAL AND METHODS: A total of 20 patients were treated with CoreValve ReValving System valve prosthesis at the Copenhagen......INTRODUCTION: Aortic stenosis (AS) is the most common heart valvular disease and with progressive disease morbidity and mortality are substantial. The standard treatment in symptomatic patients is surgical valve replacement. However, one third of the patients with severe AS are inoperable due......-up. CONCLUSION: Implantation of a percutaneous aortic valve can be achieved in patients with inoperable AS and may become a very important therapeutic modality for this group of patients. These first results from Copenhagen University Hospital are promising and in concordance with international experience....

  17. Styring, ledelse og resultater på ungdomsuddannelserne

    DEFF Research Database (Denmark)

    on to tertiary education? Quality is measured by examining the ability of institutions to retain the students who enrol in the programmes, the ability of institutions to raise the academic levels of their students, and the wages that graduates from the programmes can earn on the labour market. The second broad...

  18. Time-varying pattern of postoperative recurrence risk of early-stage (T1a-T2bN0M0) non-small cell lung cancer (NSCLC): results of a single-center study of 994 Chinese patients.

    Science.gov (United States)

    Zhu, Jian-fei; Feng, Xing-yu; Zhang, Xue-wen; Wen, Ying-sheng; Lin, Peng; Rong, Tie-hua; Cai, Ling; Zhang, Lan-jun

    2014-01-01

    The aim of this study was to analyze the time-varying pattern of recurrence risk of early-stage (T1a-T2bN0M0) non-small cell lung cancer (NSCLC) after surgery using the hazard function and identify patients who might benefit from adjuvant chemotherapy. This retrospective study enrolled 994 patients with early-stage NSCLC who underwent radical surgical resection between January 1999 and October 2009. Survival curves were generated using the Kaplan-Meier method, and the annual recurrence hazard was estimated using the hazard function. The median recurrence-free survival (RFS) was 8.8 years. The life table survival analysis showed that the 1-year, 3-year, 5-year and 10-year recurrence rates were 82.0%, 67.0%, 59.0% and 48.0%, respectively. Approximately 256 (25.7%) patients experienced relapse [locoregional: 32 (3.2%) and distant: 224 (22.5%)], and 162 patients died from cancer. The annual recurrence hazard curve for the entire population showed that the first major recurrence surge reached a maximum 1.6 years after surgery. The curve subsequently declined until reaching a nadir at 7.2 years. A second peak occurred at 8.8 years. An analysis of clinical-pathological factors demonstrated that this double-peaked pattern was present in several subgroups. The presence of a double-peaked pattern indicates that there is a predictable temporal distribution of the recurrence hazard of early-stage NSCLC. The annual recurrence hazard may be an effective method of selecting patients at high risk of recurrence, who may benefit from adjuvant therapy.

  19. a-SiNx:H 薄膜的热丝化学气相沉积及微结构研究%Research of hot wire chemical vapor deposition and micro-structure of a-SiNx:H thin film

    Institute of Scientific and Technical Information of China (English)

    张娜; 周炳卿; 张林睿; 路晓翠

    2016-01-01

    In order to study the effect of hot wire temperature on the properties of a-SiNx:H thin films, by using hot wire chemical vapor deposition method and using SiH 4 , NH3 , H2 as reaction gas source , a-SiNx:H films were deposited by changing the temperature of hot wire .Film luminescent properties , microstructure and bonding characteristics were gotten and analyzed in detail by means of measurement methods such as ultraviolet-visible optical absorption spectroscopy , Fourier transform infrared transmission spectroscopy , and photoluminescence spectrum .The results show that , when wire temperature is at 1645℃, H content reaches greatest , N content is extremely small , film has high refractive index and a large degree of order .When the wire temperature is at 1713℃, H content decreases , N content reaches extremes .And then, with the increase of hot wire temperature, N content decreases and internal defect intensity increases .The results show that the best value of hot filament temperature is between 1596℃ to 1680℃ and the refractive index of film is 2.0.The film, with full nitrogen and hydrogen contents and stable structure and characteristics , is suit to choose as silicon-based solar cell antireflection film .%为了研究热丝温度对a-SiNx:H薄膜性能的影响,采用热丝化学气相沉积法,以SiH4,NH3,H2为反应气源,改变热丝温度沉积薄膜。通过紫外-可见光吸收谱、傅里叶红外透射光谱、光致发光光谱等测试手段对薄膜发光特性、微观结构及键合情况进行表征与分析。从测试情况可知,当热丝温度为1645℃时,H含量最大,N含量最小,同时其折射率最高,薄膜材料的有序度增大;当热丝温度为1713℃时,H含量减少,N含量达到最大,且随着热丝温度增大,薄膜中N含量又开始下降,内部缺陷态密度增加。结果表明,热丝法制备a-SiNx :H薄膜的热丝温度最佳值在1596℃~1680℃之间,此

  20. Effect of Sintering Temperature on Microstructure, Chemical Stability and Electrical Properties of Transition Metal or Yb-Doped BaZr0.1Ce0.7Y0.1M0.1O3-δ (M = Fe, Ni, Co and Yb

    Directory of Open Access Journals (Sweden)

    Behzad eMirfakhraei

    2014-03-01

    Full Text Available Perovskite-type BaZr0.1Ce0.7Y0.1M0.1O3-δ (M = Fe, Ni, Co and Yb (BZCY-M oxides were synthesized using the conventional solid-state reaction method at 1350-1550 oC in air in order to investigate the effect of dopants on sintering, crystal structure, chemical stability under CO2 and H2S, and electrical transport properties. The formation of the single-phase perovskite-type structure with an orthorhombic space group Imam was confirmed by Rietveld refinement using powder X-ray diffraction (PXRD for the Fe, Co, Ni and Yb-doped samples. The BZCY-Co and BZCY-Ni oxides show a total electrical conductivity of 0.01 and 8 × 10-3 Scm-1 at 600 oC in wet H2 with an activation energy of 0.36 and 0.41 eV, respectively. Scanning electron microscopy (SEM and energy-dispersive X-ray analysis (EDX revealed Ba and Co rich secondary phase at the grain-boundaries, which may explain the enhancement in the total conductivity of the BZCY-Co. However, ex-solution of Ni at higher sintering temperatures, especially at 1550 oC, decreases the total conductivity of the BZCY-Ni material. The Co and Ni dopants act as a sintering aid and form dense pellets at a lower sintering temperature of 1250 oC. The Fe, Co and Ni-doped BZCY-M samples synthesized at 1350 oC show stability in 30 ppm H2S/H2 at 800 oC, and increasing the firing temperature to 1550 oC, enhanced the chemical stability in CO2 / N2 (1: 2 at 25-900 oC. The BZCY-Co and Ni compounds with high conductivity in wet H2 could be considered as possible anodes for intermediate temperature solid oxide fuel cells (IT-SOFCs.

  1. M0内核在通用文本型HMI中的应用%Application of M0 Kernel in Common Text-based HMI

    Institute of Scientific and Technical Information of China (English)

    类延强; 黎英

    2013-01-01

    采用NUC100LE3AN为主控芯片,设计了通用文本型HMI.(Human Machine Interface),实现了与大部分品牌PLC的通信连接.介绍了该装置的构架原理、功能及其软硬件设计思想.详细讨论了FLASH存储器空间分配、APROM区与LDROM相互跳转原理、以及应用程序区任务模块的组织形式等.最后通过与信捷XCl-32型PLC连接,进行了功能测试,结果表明设计满足了功能需求.%Based on NUC1OOLE3AN as the main chip, the design of a common text -based Human Machine Interface (HMI) is detailed in this paper, which can be communicated with the most of PLC on the market. The architecture of HMI, functions and concept of software and hardware are introduced in this paper. The FLASH memory space division, the principle of switch between APROM and LDROM and the organization of the task module in application programs are discussed in detail. Finally, the functions of common text - based HMI have been tested by connecting with a XC1 -32 PLC. The results show that the design meets all of the requirements.

  2. Параметрическое моделирование зубчатых колёс в siemens nx

    OpenAIRE

    Рамзаева, Елена

    2012-01-01

    В статье рассмотрены различные подходы параметрического 3D-моделирования зубчатых колёс с наружным и внутренним облегчением и алгоритм последовательного построения тел вращения, формирования зубчатого венца с эвольвентным профилем зубьев и эвольвентных шлицов в среде Siemens NX с использованием MS Excel и VBA макросов....

  3. 掺氮TiO2-xNx薄膜托槽生物相容性的实验研究%Biocompatibility of MBT straight wire appliance with nitrogen-doped titania TiO2-xNx film

    Institute of Scientific and Technical Information of China (English)

    张颖杰; 曹宝成; 王育华; 王璞; 张旭; 李娜

    2012-01-01

    目的 制备掺氮TiO2-xNx薄膜托槽并评价薄膜托槽的生物相容性.方法 采用射频磁控溅射法在直丝弓金属托槽原材料试样表面制备锐钛矿相掺氮TiO2-xNx薄膜:①将薄膜材料(薄膜托槽组)和普通托槽材料(普通托槽组)分别缝合于大鼠颊黏膜2侧,2周后肉眼观察和组织学评价薄膜的口腔黏膜刺激性;②分别用薄膜材料(薄膜托槽组)、普通托槽材料(普通托槽组)浸提液和生理盐水(生理盐水组)给小鼠灌胃1周,观察小鼠的临床毒性体征、体质量增长率和重要脏器组织学变化以评价薄膜材料的短期全身毒性作用;③薄膜材料对兔血的溶血实验评价材料的溶血性;④分组同②,各组小鼠在24h内给予对应液灌胃2次,制备小鼠骨髓涂片评价薄膜材料可能的致畸致突变作用.结果 大鼠饮食、活动如常,薄膜托槽组的口腔黏膜与普通托槽组组织学表现一致,表明薄膜托槽无明显口腔黏膜刺激作用;短期全身毒性实验中,3组小鼠体质量增长率差异无统计学意义(P>0.05),所有动物未观察到明显的临床毒性体征,病理解剖也未观察到明显异常,表明薄膜托槽无明显短期全身毒性作用;溶血实验中,薄膜托槽组溶血率<5%,未发现红细胞破象,表明薄膜试样不引起急性溶血;微核实验中生理盐水组、薄膜托槽组和普通托槽组的微核率分别为1.48‰、2.08‰和2.16‰,均低于5‰,且两两之间差异无统计学意义(P>0.05).结论 掺氮TiO2-xNx薄膜托槽无口腔黏膜刺激性、无短期全身毒性、无溶血性以及无遗传毒性,具有良好的生物相容性.%Objective To produce nitrogen-doped titania (Ti02-xNx) film on MBT straight wire appliance and to evaluate its biocompatibility. Methods Radio-frequency magnetron sputtering was applied to produce TiO2-xNx film on the surface of raw material of MBT straight wire appliance. Biocompatibility was evaluated as

  4. A study of KIT activating mutations in acute myeloid leukemia M0 ...

    African Journals Online (AJOL)

    Syed Rizwan Hussain

    2012-03-04

    Mar 4, 2012 ... tify and determine the frequency and prevalence of mutations in North Indian patients suffering ..... Table 2 Amino acid sequences of KIT gene point mutations at exon .... primary adenoid cystic carcinoma of the salivary gland.

  5. Topological quantum field theory and the Nielsen-Thurston classification of M(0,4)

    DEFF Research Database (Denmark)

    Andersen, Jørgen Ellegaard; Masbaum, G.; Ueno, K.

    2006-01-01

    We show that the Nielsen–Thurston classification of mapping classes of the sphere with four marked points is determined by the quantum $SU(n)$ representations, for any fixed $n\\geq 2$. In the Pseudo–Anosov case we also show that the stretching factor is a limit of eigenvalues of (non-unitary) $SU......)$-TQFT representation matrices. It follows that at big enough levels, Pseudo–Anosov mapping classes are represented by matrices of infinite order....

  6. Dependence of magnetic and structural properties of Ni0.5 M0.5 ...

    African Journals Online (AJOL)

    user

    1Department of Physics, Patna Women's College, Patna University, Patna ... different at temperatures above and below a critical temperature in this range. ... such as maximum reactivity, short time, low preparation temperature, homogenous.

  7. United States Air Force Occupational Survey Report. Aerospace Physiology AFSC 4M0X1

    Science.gov (United States)

    2002-05-01

    Glenn Smith developed the survey instrument. Ms. Jeanie Guesman provided computer programming support and Ms. Dolores Navarro provided...corps were recurring separation factors. Factors such as job security, retirement benefits, and medical or dental care were reported as weighing...had on their decision to reenlist. Factors with the highest average response scores for 1-48 months TAFMS include medical or dental care for active

  8. Optical M0bius Strips in Three Dimensional Ellipse Fields: Lines of Linear Polarization

    CERN Document Server

    Freund, Isaac

    2009-01-01

    The minor axes of, and the normals to, the polarization ellipses that surround singular lines of linear polarization in three dimensional optical ellipse fields are shown to be organized into Mobius strips and into structures we call rippled rings (r-rings). The Mobius strips have two full twists, and can be either right- or left-handed. The major axes of the surrounding ellipses generate cone-like structures. Three orthogonal projections that give rise to 15 indices are used to characterize the different structures. These indices, if independent, could generate 839,808 geometrically and topologically distinct lines; selection rules are presented that reduce the number of lines to 8,248, some 5,562 of which have been observed in a computer simulation. Statistical probabilities are presented for the most important index combinations in random fields. It is argued that it is presently feasible to perform experimental measurements of the Mobius strips, r-rings, and cones described here theoretically.

  9. Анализ геометрических характеристик траектории в Siemens nx

    OpenAIRE

    Чижов, М.; Ветохин, В.; Мануковский, А.

    2011-01-01

    В статье рассматриваются возможности системы NX для построения сложных кривых, отображающих траекторию инструмента при гальваномеханической обработке сферических поверхностей. Показаны проблемы, возникающие при проектировании приспособлений для гальваномеханической обработки сферических поверхностей. Полученные результаты будут использованы для создания экспериментальной установки и системы ЧПУ для нее...

  10. Preparation and Hydrogen Storage Performance of 2LiNH2/MgH2+5 %M (M=0, AlCl3, MgCl2, TiCl3) Alloy%2LiNH2/MgH2+5%M(M=O,AlCl3,MgCl2,TiCl3)合金的制备与储氢性能

    Institute of Scientific and Technical Information of China (English)

    黄显吞; 卿培林; 覃昌生

    2016-01-01

    在氢气保护下,通过机械合金化制备2LiNH2/MgH2+5%M(M=0,AlCl3,MgCl2,TiCl3)复合材料,研究添加金属卤化物对2LiNH2/MgH2复合材料相结构及储氢性能的影响.结果表明,复合材料的相结构主要由MgH2和LiNH2组成,且添加MgCl2和TiCl3后复合材料的粒度相对较小;2LiNH2/MgH2复合材料在添加金属卤化物后表观活化能增大,但在相同的温度下吸氢速率明显增大,并在升温速率为8 K/min时添加这些金属卤化物后都能使复合材料的氢化反应温度降低.

  11. UG NX CAM的标识加工

    Institute of Scientific and Technical Information of China (English)

    张国武

    2007-01-01

    UG注释加工模块也是UG软件中很优秀的一个模块。时下有关UG其他模块应用的文章很多,但关于该模块的介绍,尤其是以具体应用实例来详细介绍其具体应用的文章则少之又少,本文作者将以“向导”的形式引导大家详细领略该模块的魅力。

  12. NX CMM数控测量编程产品

    Institute of Scientific and Technical Information of China (English)

    Charles Clark

    2010-01-01

    @@ 一、行业趋势与要求 零件测量检验仍然是质量保证过程中的一个重要要素.在过去几年中,与测量相关的技术在硬件和软件上都发生了很大变化,测量探头与扫描装置采集数据的速度快了很多.但是如果遇到几何图形复杂的零件,要想在单一装置上实现高效测量,则需要多轴探测路径编程.

  13. UG NX CAM的标识加工

    Institute of Scientific and Technical Information of China (English)

    张国武

    2007-01-01

      标识加工,即针对要雕刻在零件表面的文字和图样的加工.在UGNX CAM中提供了专门的标识加工操作,即注释加工操作.本文将通过一个简单的实例对标识加工的方法进行介绍.待加工的零件如图1所示,注释文字"陕航院"是在UG制图模块中添加的注释.……

  14. Siemens PLM Software发布NX6软件

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    2008年5月21日,西门子工业自动化业务部旗下机构,全球领先的产品生命周期管理(PLM)软件和服务提供商Siemens PLM Software发布了NX第6版数字化产品开发软件.其中包括由Siemens PLM Software最近发布的同步建模技术所带来的新功能。

  15. SIEMENS PLM SOFTWARE发布NX7.0

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    <正>10月12日,西门子工业自动化业务部旗下机构、全球领先的产品生命周期管理(PLM)软件与服务提供商Siemens PLM Software近日宣布推出其旗舰数字化产品开发解决方案NX软件的最新版。

  16. Siemens PLM Software发布支持MACOSX的NX

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    西门子工业自动化业务部旗下机构、全球领先的产品生命周期管理(PLM)软件与服务提供商Siemens PLM Software近日宣布推出支持运行于64位、基于英特尔处理器的MacOSX的NX软件。作为Siemens PLM Software的旗舰级数字化产品开发软件,NX现在也把苹果操作系统纳入了其所支持的一系列操作环境中。

  17. Effect of N2 Flow on Microstructure and Properties of CrNx Film Prepared by Unbalanced Magnetron Sputtering on the Surface of Depleted Uranium%氮流量对贫铀表面磁控溅射CrNx薄膜结构与性能的影响

    Institute of Scientific and Technical Information of China (English)

    朱生发; 吴艳萍; 刘天伟; 杨锁龙; 唐凯; 魏强

    2012-01-01

    The chemical nature of depleted uranium is very active and susceptible to oxidation in nature environment. CrN, films were prepared by unbalanced magnetron sputtering ion plating at different N2 flow on the surface of depleted uranium to improve its corrosion resistance. The surface morphology, phase structure, chemical state and corrosion behavior of CrN, films were characterized by SEM, XRD, XPS, and polarization curves {Ell). The results show that, phase structure of CrNx film prepared at 10 sccm N2 flow is composed primarily of the bcc α-Cr. With the increasing of N2 flow, the phase structures transform to HCP-Cr2N and fee CrN, which preferred orientation transforms from Cr(110) to Cr2N(111) and CrN(200). When N2 flow increases from 10 sccm to 50 sccm, the Cr2p3/2 XPS peaks move toward high binding energy side, the content of metal Cr decreases and the content of nitride chromium increases. When N2 flow increases to 30 sccm, CrN, film has fine grain and better density, its corrosion potential increases to 550 mV and corrosion current density decreases two orders of magnitude. After deposited CrN, film by unbalanced magnetron sputtering, the corrosion resistance of depleted uranium is effectively improved.%金属铀的化学性质十分活泼,极易发生氧化腐蚀.为改善基体的抗腐蚀性能,采用非平衡磁控溅射技术在金属铀表面制备了不同氮含量的CrNx薄膜.采用扫描电子显微镜(SEM)、X射线衍射技术(XRD)、X射线光电子能谱(XPS)、动电位极化曲线,分别研究了薄膜形貌、物相结构、表面元素化学价态及抗腐蚀性能.结果表明,当氮流量为10 sccm时薄膜主要为体心立方的α-Cr,随氮流量的增大,薄膜转化为六方Cr2N和立方CrN结构,其择优取向由Cr(110)转化为Cr2N(111)及CrN(200),金属态Cr的含量逐渐减少,氮化态Cr的含量增多,Cr2p3/2的结合能峰位逐渐向高结合能方向移动.CrNx薄膜呈纤维状结构,当氮流量增大到30 sccm

  18. Myokardieinfarktincidensen i Danmark. Resultater fra Dan-Monica 1982-1984

    DEFF Research Database (Denmark)

    Schroll, M; Hansen, B; Hansen, U

    1993-01-01

    care in Copenhagen county (320,000 inhabitants) as part of WHO MONICA, which compares 39 centres in 26 countries. The incidence of myocardial infarction during the first three years, 1982-1984, of the Heart Register, DAN-MONICA at Glostrup Hospital, is reported. The register is complete and valid...

  19. Researches on nuclear wastes: results and outlooks; Recherches sur les dechets nucleaires: resultats et perspectives

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    In the framework of a sustainable development, the CEA is engaged in the design, evaluation and development of new fuels and in the research process on radioactive wastes management. This paper gathers the CEA actions in the domain giving general information on the radioactive wastes nature and management, the wastes sorting to reduce the toxicity, the wastes conditioning and the packages long-dated behavior and the wastes storage and disposal. (A.L.B.)

  20. Areva first half 2008 financial results; Areva - Resultats du 1. semestre 2008

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    Operating income: 539 million euros; net income attributable to equity holders of the parent: up 465 million euros to 760 million euros, i.e. 21.45 euros per share; net debt of 2.385 billion euros, i.e. 30.1% of equity (26.2% at 12/31/2007). For 2008 as a whole, the group confirms its outlook for a sharp increase in backlog and in revenue and rising operating income. The backlog rose to 38.123 billion euros at June 30, 2008, up 13.6% compared with the 33.553 billion euros recognized at June 30, 2007. In Nuclear, contributors to growth were the Reactors and Services division (+36%) and the Front End division (+11%). The Transmission and Distribution division posted growth of 41%. First half 2008 revenue rose to 6.168 billion euros, for 14.8% reported growth and 16.0% organic growth. In the nuclear businesses, organic growth was 18.6%, including 31.3% growth in Reactors and Services as new power plant construction projects moved forward and 12.0% growth in Transmission and Distribution business. The group's operating income rose to 539 million euros in the first half of 2008, for a margin rate of 8.7%, compared with 207 million euros in the first half of 2007 and a margin rate of 3.9%. This 332 million euro increase includes: - the strong volume increase in our commercial and industrial operations and the positive impact this had on profitability for all of our divisions; - a substantial operational gain in the Front End division, including a significant dilution gain related to acquisition by Suez of an equity interest in the GB II enrichment plant; - an additional provision on the OL3 contract, made necessary by: cost overruns generated by the use of additional resources needed to meet the schedule and offset the customer's operating practices; and the difficulties and risks on operations managed by some subcontractors. Operating income for the Back End division rose to 400 million euros, an increase of 177 million euros compared with the first half of 2007. The Reactors and Services division had an operating loss of 258 million euros, compared with a loss of 230 million euros in the first half of 2007. The Back End division recorded operating income of 175 million euros up from 95 million euros in the first half of 2007. Operating income for the Transmission and Distribution division was up sharply, by 45%, from 175 million euros in the first half of 2007 to 253 million euros in the first half of 2008. The group's consolidated net income rose to 760 million euros in the first half of 2008, up 465 million euros from the 295 million euros of the first half of 2007. The group's free operating cash flow came to -521 million euros in the first half of 2008. The group's net debt rose to 2.385 billion euros from 1.953 billion euros at the end of 2007. For the full year of 2008, the group confirms its perspectives: A strong increase in revenue and backlog; Increased operating income; Continuation of its capital expenditure program.

  1. Hospitalsomkostninger og nytte af screening for abdominalt aortaaneurisme. Resultater fra en randomiseret screeningsundersøgelse

    DEFF Research Database (Denmark)

    Lindholt, Jes Sanddal; Juul, Svend; Fasting, Helge

    2003-01-01

    The hospital costs and benefits of screening older males for abdominal aortic aneurysms (AAA) are unknown.......The hospital costs and benefits of screening older males for abdominal aortic aneurysms (AAA) are unknown....

  2. Technical results of the electric industry in France; Resultats techniques du secteur electrique en France

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This document presents graphs and tables of data on the electric power consumption, capacity, exploitation, on the exchanges with the foreign, the network access and international comparisons. (A.L.B.)

  3. 1999 results of the group EDF; Resultats 1999 du groupe EDF

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    This paper presents an analysis of the material facts of the year 1999 for EDF Group. Statistical and financial data in tables and graphs illustrate commercial results, financial aspects and social audit. A special attention is given to the storm impact on the bill. (A.L.B.)

  4. La micro-informatique dans les ecoles quebecoises: resultats d'une enquete.

    Science.gov (United States)

    Berthelot, Jocelyn

    1987-01-01

    Study conducted in 1985 involved a sample of male and female teachers in Quebec, Canada. The study provides insight into the use of microcomputers in Quebec schools. Study underscored inequalities in the distribution of computers based on school size, town population, and administrative region. (RB)

  5. Tobaksrygning og risiko for hoftebrud hos maend og kvinder. Resultater fra Hovedstadens Center for Prospektive Befolkningsstudier

    DEFF Research Database (Denmark)

    Høidrup, S; Prescott, E I; Sørensen, T I

    2001-01-01

    smokers had a relative risk of hip fracture of 1.36 (1.12-1.65) and male smoked 1.59 (1.04-2.43) relative to those who have never smoked. In both sexes, the relative risk of hip fracture gradually increased with current and accumulated tobacco consumption. A test for interaction between gender and smoking......INTRODUCTION: In the present population-based cohort study, we prospectively determined the influence of current, previous, and cumulative smoking history on the risk of hip fracture in men and women and addressed the issue of possible gender difference in susceptibility to tobacco smoking...... habits was insignificant. Men who stopped smoking for more than five years had a lower risk of hip fracture than men who currently smoked, whereas no such risk reduction was seen in female ex-smokers. CONCLUSION: Tobacco smoking is an independent risk factor for hip fracture in men and women...

  6. MM96.61 Resultater fra projektet "Nordisk audit af koordinatmålmaskiner"

    DEFF Research Database (Denmark)

    Hansen, Hans Nørgaard

    1996-01-01

    Results from the project "Nordic audit of coordinate measuring machines". Presentation at the 4th seminar on coordinate metrology september 1997 LEGO, Billund.......Results from the project "Nordic audit of coordinate measuring machines". Presentation at the 4th seminar on coordinate metrology september 1997 LEGO, Billund....

  7. Local power system plans - Results of the inquiry of 1997; Lokale kraftsystemplaner - resultater av spoerreundersoekelse 1997

    Energy Technology Data Exchange (ETDEWEB)

    Trengereid, Frode

    1997-11-03

    In this report, NVE (Norwegian Water Resources and Energy Administration) presents a survey of how many electric utility companies in Norway that have worked out local power system plans, ie plans for the distribution grid. An inquiry was made among over 200 Norwegian utilities in order to clarify the status of such planning per 1997. So far NVE is not authorized to require that anybody shall take up local power system planning, but the goal is to provide local motivation for such planning. NVE has also wanted to focus on some of the problems connected with local power planning. In 1997, a project will be done on end-user measures and local power system planning. Power- and energy reducing end-user measures may be efficient ways of reducing grid investments in a supply region and should be more strongly incorporated into grid planning. 39% of the utilities already have local power system plans, 15% did not answer the inquiry, 16% did not at present want to work out such plans, 9% are already working out plans and 21% intend to do it

  8. Ungepaneler: Reaktioner på undersøgelsens resultater fra de unge selv

    DEFF Research Database (Denmark)

    Christiansen, Irene

    2005-01-01

    Ved unge-paneler på tre forskellige skoler i landet blev undersøgelsens vigtigste konklusioner diskuteret med henblik på at få de unges uddybninger og nuanceringer af de fund, som spørgeskemaundersøgelsen gav anledning til. Unge fra 9.klasser fra tre forskellige skoler indgik i de tre paneler....

  9. QUEST: Resultater af samarbejde om naturfaglige rammer og netværk

    DEFF Research Database (Denmark)

    Nielsen, Birgitte Lund; Sillasen, Martin Krabbe

    2016-01-01

    QUEST har i 4 år rammesat fagteam og netværksaktiviteter for naturfagslærere fra fem kommuner. Projektet er forskningsinformeret, både rytmen med afprøvning og videndeling og det naturfagdidaktiske indhold, fx IBSE, dialogværktøjer og lektionsstudier.......QUEST har i 4 år rammesat fagteam og netværksaktiviteter for naturfagslærere fra fem kommuner. Projektet er forskningsinformeret, både rytmen med afprøvning og videndeling og det naturfagdidaktiske indhold, fx IBSE, dialogværktøjer og lektionsstudier....

  10. Forekomst af kronisk obstruktiv lungesygdom i København. Resultater fra Østerbroundersøgelsen

    DEFF Research Database (Denmark)

    Løkke, Anders; Fabricius, Peder G; Vestbo, Jørgen;

    2007-01-01

    COPD is one of the leading causes of death worldwide. No recent prevalence study has been carried out in Denmark, but it is estimated that approximately 200,000 Danes have COPD. The aim of this study was to determine the prevalence of COPD in Copenhagen using data from the 4th examination...

  11. Resultater fra to kvalitative casestudier i Brønderslev Kommune 2016

    DEFF Research Database (Denmark)

    Drugli, May Britt; Frederiksen, Pia; Hansen, Ole Henrik

    I denne rapport præsenteres resultaterne af to kvalitative casestudier, som på forskellig vis omhandler arbejdet med læringsmiljøudvikling i Brønderslev Kommunes dagtilbud og skoler via forsknings- og udviklingsprojektet ’Udvikling i fællesskaber’ (2013-2016). Projektet involverer et treårigt...... og anden kortlægningsundersøgelse (Nordahl et al., 2017; Qvortrup et al., 2015) fremadrettet skal danne grundlag for pædagogiske initiativer i form af ledelsestiltag, pædagogiske udviklingsaktiviteter og ledelses- og kompetenceudviklingsaktiviteter på kommune-, institutions- og teamniveau....

  12. Resultater fra anden kortlægningsundersøgelse i Brønderslev Kommune 2016

    DEFF Research Database (Denmark)

    Nordahl, Thomas; Hansen, Line Skov; Øyen Nordahl, Sigrid

    Denne rapport baserer sig på to kortlægningsundersøgelser som er gennemført i dagtilbud og skoler i Brønderslev Kommune. Den første kortlægningsundersøgelse blev gennemført i december 2013 til januar 2014, og den anden kortlægningsundersøgelse blev gennemført i januar – februar 2016. De to kortlæ......Denne rapport baserer sig på to kortlægningsundersøgelser som er gennemført i dagtilbud og skoler i Brønderslev Kommune. Den første kortlægningsundersøgelse blev gennemført i december 2013 til januar 2014, og den anden kortlægningsundersøgelse blev gennemført i januar – februar 2016. De...

  13. "To år med CBS Maritime - her er de første resultater"

    DEFF Research Database (Denmark)

    Sornn-Friese, Henrik; Hansen, Carsten Ørts

    2014-01-01

    Rederier: CBS Maritime har netop offentliggjort en statusrapport på udviklingen siden starten i 2012 og med tal for udviklingen på de nye maritime uddannelser. Forfatterne fremlægger nogle af resultaterne her.......Rederier: CBS Maritime har netop offentliggjort en statusrapport på udviklingen siden starten i 2012 og med tal for udviklingen på de nye maritime uddannelser. Forfatterne fremlægger nogle af resultaterne her....

  14. Lucerneensilage til malkekøer - resultater fra nye forsøg

    DEFF Research Database (Denmark)

    Weisbjerg, Martin Riis

    2007-01-01

    Der er i 2007 gennemført to forsøg med lucerneensilage, hvor lucerneensilage sammenlignes med kløvergræsensilage og rationer med forskellig lucerne/majs ensilage forhold, og hvor forskellige kvaliteter af lucerneensilage sammenlignes i rationer, hvor majsensilage udgør 2/3 af grovfoderet....

  15. The highly insulated glass house. Results and experiences; Det hoejisolerede glashus - resultater og erfarigner

    Energy Technology Data Exchange (ETDEWEB)

    Wittchen, K.B.; Aggerholm, S. [Statens Byggeforskningsinstitut (Denmark)

    1999-10-01

    The aim of the present project was to demonstrate the possibility of constructing a house with a large part of the facade made of glass, within the energy frame of the Danish Building Regulations and without compromising with the thermal indoor climate. The project demonstrates the wide possibilities that exist in the Building Regulations for glass areas by using the rule of the energy frame. Construction of The Highly Insulated Glass house, analysis of measurements collected over almost two years and interviews with the residents made it clear that it is possible to build a house with a high percentage of glass in the facades without compromising with the thermal indoor climate and - with some minor adjustments of constructions and installations - the energy consumption. The Highly Insulated Glass House is not necessarily the answer to future single-family houses. Still, by going to the extremes lessons are learned which can be exploited in future architectonic successful low-energy houses. (LN)

  16. 2003 annual results of EdF group; Resultats annuels 2003 du groupe EDF

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-03-01

    The Electricite de France (EdF) group Board of Directors, meeting on March 11, 2004, under the Chairmanship of Francois Roussely, reviewed the audited consolidated financial statements for the year ended 12/31/2003. This document presents the consolidated results of EdF group for 2003: consolidated financial statements, highlights of the year, focus on 2003 events, commercial results, EDF in Europe and worldwide, EDF France highlights, key figures. (J.S.)

  17. Aula Virtual. Evolució del maquinari i millora de resultats

    Directory of Open Access Journals (Sweden)

    Paloma Moreno Clari

    2009-07-01

    Full Text Available Las Tecnologías de la Información y la Comunicación (TIC han contribuido al desarrollo de plataformas e.learning de apoyo a los procesos de enseñanza-aprendizaje. Actualmente, la mayoría de universidades cuentan con algún tipo de sistema de gestión del aprendizaje (en inglés, LMS. El óptimo uso de estas plataformas requiere que integren las aplicaciones preexistentes de forma transparente. Esto se consigue con el uso de una arquitectura robusta. En este artículo expondremos la implementación y arquitectura del LMS integrado de la Universitat de València y la evolución de su hardware para adecuarse de manera óptima a las necesidades de la universidad.

  18. Mikrokirurgisk varicoceleoperation: en retrospektiv opgørelse af danske resultater

    DEFF Research Database (Denmark)

    Fode, Mikkel; Sønksen, Jens; Mikines, Kári J

    2009-01-01

    INTRODUCTION: Varicoceles are present in about 15% of the male population. The treatment is surgical and internationally there has been an increase in the use of a subinguinal microsurgical approach in which the veins of the spermatic cord are ligated. The purpose of this paper is to evaluate...... to a single surgeon only, the number of recurrences and complications for the last 47 operated patients decreased to 0% and 4%, respectively. CONCLUSION: In trained hands microsurgical varicocelectomy was an effective method with few complications and recurrences. Udgivelsesdato: 2009-Nov...

  19. First half 2006 financial results; Resultats du 1er semestre 2006 Groupe Areva

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-09-15

    Areva provides technological solutions for highly reliable nuclear power generation and electricity transmission and distribution. The group is the world leader in nuclear power and the only company to cover all industrial activities in this field. This Press release presents the first half 2006 financial results: the overall performance and the performance by division (front end, reactors and services, back end, transmission and distribution). (A.L.B.)

  20. Areva - first half 2007 financial results; Areva - resultats du 1. semestre 2007

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This document presents the financial statements of Areva group for the first half of 2007 as submitted by the Executive Board: Sales revenue: euro 5.373 billion, up by 6.7%; Operating income: euro 207 million, i.e. 3.9% operating margin, up 1.6 point compared with H1 2006; Consolidated net income: euro 295 million, i.e. euro 8.31 per share in H1 2007 against euro 6.92 per share in H1 2006, a 20% increase. All Group performance indicators were up the first half of 2007. Growth was robust and profitability strengthened significantly in terms of both operating income and net income. Consolidated sales revenue rose 6.7% for the first half of 2007 alone, after growth of more than 7% in 2006. This positive trend will continue: the backlog grew by 31% in the first half to more than euro 33 billion, compared with euro 26 billion six months ago and euro 21 billion at year-end 2005. Business is up sharply in the Transmission and Distribution division, which had operating margin of 8.7% in the first half of the year.

  1. The observatories for the radioactivity. results of measures; Les observatoires de la radioactivite. resultats des mesures

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This IPSN's report on the monitoring of the radioactivity in France provides many graphs and tables of measures results recorded during the year 2000. The graphs show the activity levels (Bq or Bq fraction, per mass or volume unit) of many radionuclides in selected indicators and for levels upper than the detection limits. The metrology and the selected samples are presented. These samples are different for the three types of observatories: atmospheric, coast and terrestrial observatories. A chronological account of the results from 1959 to 2000 is also provided for the Cesium 137 and the beryllium 7 in the aerosols. (A.L.B.)

  2. New results for neutronic equations (II); Nouveaux resultats pour les equations de la neutronique (II)

    Energy Technology Data Exchange (ETDEWEB)

    Boulanouar, M. [LMCM-RMI, 86 - Poitiers (France)

    2010-05-15

    This Note deals with the transport equation endowed with general boundary conditions. Thanks to a smallness hypothesis upon the boundary operator, we prove this equation is governed by a C{sub 0}-semigroup into its natural space L{sub 1}. (author)

  3. Enova's industrial activities with results from 2006; Enovas industriaktiviteter med resultater fra 2006

    Energy Technology Data Exchange (ETDEWEB)

    2007-07-01

    During 2006 Enova has been monitoring the energy consumption of the industries connected with Enova's group for industry. The industries activities, statistical numbers for energy consumption and bench-marketing number are included

  4. Resultater fra fire kvalitative casestudier FLiK-prosjektet Kristiansand kommune

    DEFF Research Database (Denmark)

    Christensen, Vibeke; Hansen, Line Skov; Kostøl, Anne

    I denne rapporten presenteres resultatene av fire kvalitative casestudier, som på forskjellig måte omhandler det arbeidet med læringsmiljøutvikling i Kristiansand kommunes barnehager og skoler, som pågår i relasjon til forsknings- og utviklingsprosjektet «FliK» (2012–2016). FLiK står for «Forskni...... casestudiene er gjennomført av forskere fra «Scandinavian Education Research Alliance» (SERA) under ledelse av professor Bengt Persson i samarbeid med professor Lars Qvortrup. SERA ble grunnlagt i 2014 og består av tre forskningsmiljøer fra henholdsvis Norge, Sverige og Danmark....

  5. 1. half results 2003 - AREVA group; Resultats du 1. semestre 2003 - groupe AREVA

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-10-01

    This financial presentation of the Areva group, the world nuclear industry leader, results for the first half 2003 highlights the good level of activity, the negotiations with URENCO in final stages concerning the enrichment, the revision of estimates and negotiations underway concerning the dismantling and the operating income positive in Q2 2003 concerning the connectors division. (A.L.B.)

  6. 2005 results making progress again; Resultats 2005 a nouveau en progression

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-03-15

    This document presents and analyses the financial and economical statements of the AREVA Group in 2005, for each division. The organic growth of sales revenue, the current operating income, the operating income, the net income up and the increased dividend proposed at the General Meeting of shareholders are discussed. (A.L.B.)

  7. Resultater fra Kortlægningsundersøgelse for alle kommuner 2015

    DEFF Research Database (Denmark)

    Qvortrup, Lars

    I april 2015 startede Program for læringsledelse. I programmet deltager tretten kommuner med i alt 242 skoler (matrikler), godt 10.000 lærere, pædagoger, ledere og andre fagprofessionelle samt ca. 79.000 elever. De tretten kommuner er Billund, Fredericia, Frederikssund, Haderslev, Hedensted, Holb...

  8. Gode resultater efter Hartmanns operation for cancer recti hos højrisikopatienter

    DEFF Research Database (Denmark)

    Togsverd-Bo, Morten; Gögenur, Ismail; Harvald, Thomas;

    2010-01-01

    The purpose of this study was to evaluate the incidence of per- and postoperative complications of low anterior resection and Hartmann's operation (HO) for rectal cancer. The study was performed in a department with a high frequency of HO....

  9. Results from the industrial network 2002[Norway]; Resultater fra industrinettverket 2002

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    The report presents a survey of various activities within the industrial network with emphasis on energy consumption and conservation and alternative energy systems. There are sections on the Enova counselling service and auxiliary measures in the energy activities illustrated by industrial examples. (tk)

  10. Fonction constante et d\\'eriv\\'ee nulle : un r\\'esultat si trivial..

    CERN Document Server

    Delcroix, Antoine

    2008-01-01

    We study various proofs of the caracterization of constant functions, more precisely of the theorem: a derivable function, defined on a real interval, is constant if, and only if, its derivative is null. Our aim is to study the relationships of these proofs with the mathematical curriculum of secondary schools and the begining of undergraduate studies in France, from various point of views (epistemological, historical, didactical).

  11. Presentation of RTE results 2003; Presentation des resultats 2003 de RTE

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    For RTE, the financial year 2003 was marked by a number of achievements: our financial performances registered a clear improvement, above objectives, with turnover growing strongly; net income reached levels almost three times higher than those recorded in 2002; the economic rate of return rose to 7.1%; and debt was reduced by 470 Meuros. These results are explained by the substantial improvement in productivity, which has risen by 5% per year on average over the last three years.

  12. May the Kyoto protocol produce results?; Le protocole de Kyoto peut-il produire des resultats?

    Energy Technology Data Exchange (ETDEWEB)

    Jaureguy-Naudin, M.

    2009-07-01

    A not well managed drastic reduction of greenhouse emissions might result in significant decrease of living standards, but without such reduction efforts, climate change might have five to twenty times higher costs. Thus, while indicating estimated consequences or evolutions of greenhouse emissions and temperature, the author stresses the need of emission reduction. She discusses the role of economic instruments which can be used in policies aimed at the struggle against climate change. She recalls the emission reduction commitments specified in the Kyoto protocol, discusses the present status, operation and results of the international emission trading scheme, the lessons learned after the first years of operation, comments the involvement of emerging countries in relationship with another mechanism defined in the protocol: the Clean Development Mechanism

  13. Primaer brystrekonstruktion i forbindelse med mastektomi ved mammacancer. Indikation, procedure og umiddelbare operative resultater

    DEFF Research Database (Denmark)

    Elberg, J J; Mollerup, C L; Dahlstrøm, K K

    2000-01-01

    Mastectomy and immediate reconstruction of 122 breasts were performed in 109 patients in close collaboration between plastic surgeons and general surgeons. In 56 patients reconstruction was performed using tissue expanders including 13 bilateral operations, 29 patients had a latissimus dorsi...... received systemic treatment and 10 local radiotherapy as well. There was no complication during systemic therapy related to reconstruction. In 10 cases local radiotherapy was performed in full, with a delay of four weeks in one patient and a need for correction of the radiation field during treatment...... myocutaneous flap and 24 a free transverse rectus abdominis myocutaneous flap. There were 27 postoperative local complications in 122 reconstructions (22%), in five the reconstruction was lost. Only patients clinically in stage I were considered for reconstruction. After histopathological staging 27 patients...

  14. La micro-informatique dans les ecoles quebecoises: resultats d'une enquete.

    Science.gov (United States)

    Berthelot, Jocelyn

    1987-01-01

    Study conducted in 1985 involved a sample of male and female teachers in Quebec, Canada. The study provides insight into the use of microcomputers in Quebec schools. Study underscored inequalities in the distribution of computers based on school size, town population, and administrative region. (RB)

  15. Areva group. Result, first half 2004; Resultats du 1. semestre 2004. Groupe Areva

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-09-01

    Areva, a world nuclear industry leader, provides by this document information and key data on the performance and detailed financial data of the first half 2004. The transmission and distribution integration plan 2004-2006 is also detailed. (A.L.B.)

  16. Hearing Protection - Needs, Technologies and Performance (Protection de l’ouie - besoins, technologies et resultats)

    Science.gov (United States)

    2010-11-01

    Acoustically Transparent – Sound -restoring, Level-dependent, passive or active hearing protectors that are specifically designed to preserve binaural ...4.1.8.6 Life Cycle Costs 4-14 4.1.8.7 State-of-the-Art 4-14 4.1.9 Level Dependent, Sound Restoring, Acoustically Transparent Earmuffs and Earplugs 4...4.1.9.5 Typical Field Attenuation 4-15 4.1.9.6 Life Cycle Costs 4-15 4.1.9.7 State-of-the-Art 4-15 4.1.10 Level Dependent, Sound Restoring

  17. Homocystein og livsstil. Resultater fra Homocysteinundersøkelsen i Hordaland 1992-1993

    Directory of Open Access Journals (Sweden)

    Ottar Nygård

    2009-10-01

    Full Text Available  SAMMENDRAGTotal homocystein (tHcy er etablert som risikofaktor for hjerte- og karsykdom. Vi har studert determinanterav plasma tHcy i et utvalg av den voksne norske befolkning basert på undersøkelse utført av Statenshelseundersøkelser i samarbeid med Universitetet i Bergen i 1992-1993. Data ble innhentet ved kliniskundersøkelse, utfylling av tre spørreskjema og ved blodtester. I alt 18 043 personer i alderen 40-67 år møttetil undersøkelse og fikk målt plasma tHcy. Plasma folat, plasma kobalamin og 677C →T mutasjonen i genetfor metylentetrahydrofolatreduktase (MTHFR er bestemt i et underutvalg på 329 personer og på personermed svært høye tHcy verdier ( ≥ 40 μmol/L. Resultatene fra Homocysteinundersøkelsen i Hordaland harvist at kjønn, alder, folatinntak, røykevaner og kaffeforbruk er de sterkeste determinanter for plasma tHcynivå, mens kobalamininntak, fysisk aktivitet, blodtrykk og kolesterolnivå er mindre sterke determinanter.Bruk av multivitaminer eller B-vitaminer er forbundet med spesielt lave tHcy nivåer. Personer med tHcy ≥40 μmol/L er karakterisert ved høy forekomst (73% av homozygositet for 677C →T mutasjonen i MTHFRgenet og lavt folatnivå. Vi konkluderer derfor med at livsstil og etablerte risikofaktorer for hjerte- ogkarsykdom er vesentlige for nivået av plasma tHcy i den generelle voksne norske befolkning.Nygård O, Refsum H, Ueland PM, Tverdal A, Vollset SE. Homocysteine and lifestyle. The HordalandHomocysteine Study. Nor J Epidemiol 1997; 7 (2: 221-224.ENGLISH SUMMARYTotal homocysteine (tHcy concentration is an established cardiovascular risk factor. We have studieddeterminants of plasma tHcy among 18 043 subjects aged 40-67 years from Hordaland county in WesternNorway who participated in a health screening programme in 1992-1993. Gender, age, folate intake,smoking habits and coffee consumption are the strongest determinants of plasma tHcy level, whereascobalamin intake, physical activity, blood pressure and total cholesterol level are weaker determinants. Useof multivitamins or B-vitamin supplements are associated with particularly low tHcy levels. In patients withseverely elevated tHcy ( ≥ 40 μmol/L, n=67, the combination of homozygosity for the 677C→T mutation inthe methylenetetrahydrofolate gene and low plasma folate levels is a dominant finding whereas a minorproportion has overt cobalamin deficiency. We conclude that lifestyle and established cardiovascular riskfactors are important determinants of the plasma tHcy level in an adult Norwegian population.

  18. Petroleum in France: the main results in 2005; Petrole en France: les principaux resultats en 2005

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    This presentation takes stock on the petroleum market in France in 2005. It provides information on the petroleum consumption, the imports and exports, the prices, the production, the refineries and the stocks. (A.L.B.)

  19. Primaer brystrekonstruktion i forbindelse med mastektomi ved mammacancer. Indikation, procedure og umiddelbare operative resultater

    DEFF Research Database (Denmark)

    Elberg, J J; Mollerup, C L; Dahlstrøm, K K;

    2000-01-01

    Mastectomy and immediate reconstruction of 122 breasts were performed in 109 patients in close collaboration between plastic surgeons and general surgeons. In 56 patients reconstruction was performed using tissue expanders including 13 bilateral operations, 29 patients had a latissimus dorsi...

  20. La implantació de la normativa dels relatius: els resultats en dos exercicis gramaticals

    Directory of Open Access Journals (Sweden)

    Joan Costa Carreras

    2014-03-01

    com a relatiu amb funció de complement indirecte. Finalment, també és destacable l’aportació d’aquest article pel que fa a la normativitat de "qui" quan fa de complement directe i va precedit de preposició: "L’home a qui vam veure continua desaparegut."

  1. PREMIERS RESULTATS SUR LES COMPORTEMENTS DE SUBSISTANCE SOLUTREENS A LA GROTTE ROCHEFORT (MAYENNE, FRANCE

    Directory of Open Access Journals (Sweden)

    Céline Bemilli

    2013-09-01

    Full Text Available Le site de la grotte Rochefort (Mayenne, France a livré depuis 2005 plusieurs centaines de restes fauniques issus des couches Solutréennes. Le Renne et le Cheval en sont les principales composantes et reflètent le fond commun du régime alimentaire des Solutréens. Nous présenterons ici les premiers résultats de l’analyse archéozoologique concernant l’exploitation de ces deux principaux taxons. Plusieurs recollages ont été réalisés. L’exceptionnelle conservation des restes permet, outre une excellente lecture des traces de découpe, une première reconstitution des modalités d’acquisition et d’exploitation des animaux, ainsi que leur saison d’abattage. La rareté des ensembles fauniques solutréens fouillés et étudiés récemment donne à celui de la grotte Rochefort un impact particulier et inédit.Several hundreds faunal remains were discovered since 2005 in the Solutrean‘s level at Rochefort cave (Mayenne, France. Reindeer and Horse are the main taxa identified and are the baseline of the Solutrean diet. We present here the preliminary results of the faunal analysis and discuss the exploitation of these two main taxa. A number of refits were possible. At the same time, the exceptional preservation of the artefacts together with well-defined cut marks allows to reconstruct procurement and use patterns of these animals as well as the season they were killed. Recently excavated and analysed Solutrean faunal assemblages are rare which make the yet unreported Rochefort cave faunal assemblage even more important and unprecedented.

  2. Design of the converter with CAN and RS232 based on Cotex-M0%基于Cotex-M0的CAN与RS232转换器的设计

    Institute of Scientific and Technical Information of China (English)

    赵亚军

    2012-01-01

    As a popular fieldbus,CAN-bus designed specifically for automotive applications but now also used in other areas such as industrial automation, ships and medical equipment. CAN is a serial bus support DCS (Distributed Control Systems) and real-time control system. DCS based on CAN-bus has advantages in realtime,reliability and standards. However,PC has no communication interface with CAN-bus system. In order to solve that problem, converter with CAN-bus and RS232 is designed for PC to control CAN-bus network. The converter takes advantage of RS232 and CAN-bus and has practical signification for CAN-bus using and development.%CAN总线作为一种应用广泛的现场总线,已经从最开始的汽车领域推广到工业控制、船舶、医疗等方面.CAN是一种有效支持分布式控制或实时控制的串行通信网络,基于CAN总线的分布式控制系统在实时性、可靠性、标准性等方面具有明显的优越性.然而,CAN总线与普通的PC机却没有直接通信接口.为此,设计了CAN总线与RS232的转换器,作为PC控制CAN总线网络的直接通道,集中了RS232与CAN总线的优点,对CAN总线的使用和发展具有一定的实际意义.

  3. Surgical treatment of larynx T1N0M0 cancer - partial laryngectomy modified Majer-Piquet's intervention.

    Science.gov (United States)

    Khujadze, M; Vashakidze, N; Kuliashvili, G; Khelashvili, B

    2013-04-01

    The increase of general radiation background in Georgia and some national characteristics such as spicy dishes, high level of alcohol and cigarette consumption, emotional, loud way of speaking result in a high percentage of people suffering from larynx malignant tumor. As generally known, the majority of larynx cancer cases represent surgical indications and only a small percentage submit to radio or chemotherapy. Since the beginning of the previous century, laryngologists have been intensely thinking about maintaining the larynx itself when giving surgical treatment. With this article we aim to introduce you to one of surgical techniques often applied in France. The method is Pr. B. Guerrier's modification of Majer-Piquet's cricohyoidoepiglotopexy, which is very popular in Europe. This consists in reconstructive operation maintaining cricoid cartilage and epiglottis with larynx's pexy when resecting partially. In cases of exact indications the, Majet-Piquet's modified operation provides a perfect: opportunity both to achieve the desirable outcome and maintain the main functions of larynx vocal, swallowing and breathing with a relatively less invasive surgical interference.

  4. Column Number Density Expressions Through M = 0 and M = 1 Point Source Plumes Along Any Straight Path

    Science.gov (United States)

    Woronowicz, Michael

    2017-01-01

    Providers of payloads carried aboard the International Space Station must conduct analyses to demonstrate that any planned gaseous venting events generate no more than a certain level of material that may interfere with optical measurements from other experiments or payloads located nearby. This requirement is expressed in terms of a maximum column number density (CND). Depending on the level of rarefaction, such venting may be characterized by effusion for low flow rates, or by a sonic distribution at higher levels. Since the relative locations of other sensitive payloads are often unknown because they may refer to future projects, this requirement becomes a search for the maximum CND along any path.In another application, certain astronomical observations make use of CND to estimate light attenuation from a distant star through gaseous plumes, such as the Fermi Bubbles emanating from the vicinity of the black hole at the center of our Milky Way galaxy, in order to infer the amount of material being expelled via those plumes.This paper presents analytical CND expressions developed for general straight paths based upon a free molecule point source model for steady effusive flow and for a distribution fitted to model flows from a sonic orifice. Among other things, in this Mach number range it is demonstrated that the maximum CND from a distant location occurs along the path parallel to the source plane that intersects the plume axis. For effusive flows this value is exactly twice the CND found along the ray originating from that point of intersection and extending to infinity along the plumes axis. For sonic plumes this ratio is reduced to about 43.

  5. An Additive Basis for the Chow Ring of $overline{mathcal M}_{0,2}({mathbb P}^r,2$

    Directory of Open Access Journals (Sweden)

    Jonathan A. Cox

    2007-08-01

    Full Text Available We begin a study of the intersection theory of the moduli spaces of degree two stable maps from two-pointed rational curves to arbitrary-dimensional projective space. First we compute the Betti numbers of these spaces using Serre polynomial and equivariant Serre polynomial methods developed by E. Getzler and R. Pandharipande. Then, via the excision sequence, we compute an additive basis for their Chow rings in terms of Chow rings of nonlinear Grassmannians, which have been described by Pandharipande. The ring structure of one of these Chow rings is addressed in a sequel to this paper.

  6. Автоматизированное проектирование электронных макетов элементов сборочной оснастки посредствам программного модуля NX/Open API

    OpenAIRE

    Лаврентьева, Мария; Чьен, Ха

    2013-01-01

    Широкое распространение CAD/CAE систем при решении большинства конструкторских и технологических задач дает возможность для развития систем автоматизированных проектирования. В данной статье описываются два метода автоматизации проектирования сборочной оснастки с использованием средств NX: Siemens PLM Software, NX/Open API. Применение подобной системы позволяет оптимизировать трудовые затраты инженера....

  7. Poweo half-year 2006 earnings. Positive net income, implementation of the 1. steps of the industrial plan; Poweo resultats du 1. semestre 2006. Resultat net positif, mise en oeuvre des 1. etapes du plan industriel

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-09-15

    POWEO, the leading independent energy operator in France, presents in this document its key financial data and highlights for the first half of 2006: - Half-year revenue amounts to euro 119.4 m, multiplied by 3.4 compared to the same period last year; - The Energy Management activity has achieved a net margin of euro 34.3 m; - EBIT amounts to euro 6.2 m, compared to euro -2.9 m in the first half of 2005; - Net income amounts to euro 8.9 m, compared to euro -2.9 m in the first half of 2005; - Completion of the preliminary steps to the building of a first thermal power plant (CCGT) is close at hand, two other projects launched; - Strengthening of internal structures in view of the residential market opening up; - Outlook for 2006: total sales expected to reach euro 220 m and positive EBITDA; - LNG terminal building project in Le Havre.

  8. Haemning af små abdominale aortaaneurismers ekspansion med roxithromycin. Resultater fra et randomiseret klinisk kontrolleret forsøg

    DEFF Research Database (Denmark)

    Vammen, Sten; Lindholt, Jes Sanddal; Østergaard, Lars J

    2002-01-01

    Macrolide treatment has been reported to reduce the risk of recurrent ischaemic heart disease. The influence of a macrolide on the expansion rate of small abdominal aortic aneurysms (AAA) is unknown at present. The aim of this study was to investigate the effect of roxithromycin on the expansion...... rate of small AAA....

  9. Malnutrition, School Feeding and Educational Performance. Notes, Comments...No. 186 = Malnutrition, alimentation scolaire et resultats educatifs.

    Science.gov (United States)

    Levinger, Beryl

    Studies reviewed in this paper analyze the relationship between School Feeding Programme (SFP) participation and cognitive development in both developing and industralized countries. Contents concern: (1) the relationship betweeen diet and cognitive development; (2) limitations of intelligence quotient tests and the need for more adequate…

  10. Results of cycling with battery charging management; Resultats de cyclage avec gestion de charge au niveau batterie

    Energy Technology Data Exchange (ETDEWEB)

    Verniolle, J.; Fernandez, C. [European Space Research and Technology Centre, Noordwijk (Netherlands)

    1996-12-31

    In order to investigate the charging mode of an in-series assembly of lithium-carbon battery cells, a test has been performed on 5 commercial cells (18650) of 0.95 Ah nominal capacity. Results show that it is possible to cycle the cells at 80% of their output capacities during more than 2000 cycles. The management of the battery consists in maintaining a constant battery voltage as soon as a cell reaches its limit voltage during constant current charging. The initial dispersion of cells has been maintained practically constant during the cycling and the charge state of all cells has decreased progressively. (J.S.)

  11. Resultater efter ekstrakorporal membranoxygeneringsbehandling af nyfødte og spaedbørn i Danmark 1995-2004

    DEFF Research Database (Denmark)

    Eriksen, Vibeke; Helvind, Morten H; Greisen, Gorm

    2007-01-01

    INTRODUCTION: In 1995 extracorporeal membrane oxygenation (ECMO) was introduced in Denmark as a treatment for critically ill infants. ECMO is primarily used in infants with severe meconium aspiration, but can be used for all kinds of pulmonary and cardiac failures as well. The purpose of our work...... was to evaluate the Danish ECMO-treatment. MATERIALS AND METHODS: We performed a retrospective study of 55 infants receiving ECMO, and the parents of the surviving children were sent questionnaires. All the completed questionnaires were returned except for one from a family that emigrated from Denmark...

  12. Processes for Assessing Outcomes of Multi-national Missions (Processus d’evaluation des resultats de missions multinationales)

    Science.gov (United States)

    2013-11-01

    section summarising the current state of political rights and civil liberties. The political rights questions are grouped into three subcategories...with assessments. To make sure we are talking about the same thing, I want to read to how NATO defines an assessment: “The purpose of Assessment...progress? What kind of content would such an ‘assessment’ cover? Which categories of information would it entail? 15a. Can you summarise the three

  13. Ekspressiv skriving som egenterapeutisk verktøy ett år etter brystkreftdiagnosen - resultater fra en norsk pilotstudie

    Directory of Open Access Journals (Sweden)

    Birgitta Haga Gripsrud

    2015-01-01

    Full Text Available Expressive writing as a self-help tool one year after the breast cancer diagnosis – results from a Norwegian pilot studyThe article presents findings from a pilot study on expressive writing, a therapeutic method undescribed in a Norwegian scientific context. Objective: 1. Gain qualitative data on breast cancer women’s experiences with expressive writing. 2. Evaluate the intervention’s feasibility, based on participants’ experiences of the instruction, procedure, and circumstances for writing. Method & design: The study has an exploratory descriptive design. Data collection was achieved through in-depth interviews, followed by experiential thematic analysis of transcripts. Results: Two women enrolled, participating in writing/interviews. Analysis revealed three themes: "The experience of the writing process", "Writing as working through and work to clear the mind", "Strength and vulnerability in relation to others". Conclusion: Findings reveal that expressive writing was experienced as achievable for two breast cancer women, one year after diagnosis. Writing provided an opportunity to work through, and sort out, feelings and thoughts connected to participants’ lives and illness experiences. The instruction was evaluated as easy to understand and inspiring. The women became absorbed in electronic writing in their own homes. They both recommended expressive writing for other women with breast cancer, especially in the period after initial diagnosis.

  14. Particle image velocimetry - Principles and first results; La velocimetrie par images de particules. Principes et premiers resultats

    Energy Technology Data Exchange (ETDEWEB)

    Laporta, A.; Marechal, J.P. [Electricite de France (EDF), Direction des Etudes et Recherches, 92 - Clamart (France)

    1997-12-31

    Particle Image Velocimetry (PIV) is a measurement technique elaborated towards the end of the 1970`s, but which has developed considerably in recent years. The general principle of PIV is very simple and enables access to instantaneous velocity fields. It consists in recording images of tracer-particles injected into the flow and determining the distance covered by these particles. Since we know the time lapse between successive images of the same particle, we can derive the local fluid velocity. Among the many existing image acquisition and processing methods, the image inter-correlation analysis techniques, used with a pulsed laser source, is the most effective. Since we know the influence of different parameters (number of particles, beam power, time lapse between two successive images, size of query zones, etc.) on the quality of the final result, we can optimize practical adjustment of the PIV measurement scheme. The PIV was tested on the LAVITA hydraulic mockup (simulating the operation of a tangential fan). First results are, all in all, highly satisfactory. These have enabled the rapid drafting of instantaneous mean velocity field maps (20 images acquired in less than 90 seconds, with a post-processing time of about 10 minutes). Observation of the instantaneous fields has evidenced the presence of low frequency non-stationary phenomena which are not revealed by Laser Doppler Velocimetry (LDV). Quantitative comparison between LDV and PIV, concerning average fields, showed close results, with, however, local divergences which could be relatively marked. It must nevertheless be noted that the PIV measurements performed on LAVITA have not been optimized with a view to obtaining a consistently good accuracy level. Priority in the present case was given to the scope of the field explored, with a view to observing the large non-stationary structures within a flow. The PIV measurement technique is thus operational for prompt flow characterization. However, concerning conclusions on the accuracy of the measurements, further comparisons will be required. (author). 11 refs.

  15. The renewable energies in France: the main results in 2002; Les energies renouvelables en France: les principaux resultats en 2002

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    This evaluation is a synthesis of the electrical and thermal productions from the renewable energies. It presents also the primary or secondary renewable energies productions when they are transformed and details the uses of each renewable energies productions, the ENR contribution to the needs of the different energy consumers (residential, agriculture, industry...). (A.L.B.)

  16. Areva - 2008 results: yet another year of growth for AREVA; Areva - Resultats 2008: une nouvelle annee de croissance pour AREVA

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-02-15

    This paper summarizes the 2008 financial results of the Areva group: Backlog: 48.2 billion euros, up 21.1%; Revenue: 13.2 billion euros, up 10.4%; Operating income: - Operating income excluding provision on OL3 contract in Finland: 1,166 million euros, i.e. operating margin of 8.9%; - Additional provision on OL3 contract of 749 million euros; - Operating income: 417 million euros, i.e. operating margin of 3.2%. Net income attributable to equity holders of the parent: 589 million euros, i.e. euros 16.62 per share; Net debt of 3.45 billion euros before recognition of the SIEMENS put; Dividend of euros 7.05 to be proposed during the Annual General Meeting of Shareholders of April 30, 2009. After publication of these figures Siemens announced its decision to withdraw from AREVA NP.

  17. Symbols or results?. Norway`s contribution to global climate policy; Symboler eller resultater. Norges bidrag til global klimapolitikk

    Energy Technology Data Exchange (ETDEWEB)

    Haugland, Torleif; Lunde, Leiv; Vraalstad, Knut; Roland, Kjell

    1997-12-31

    The report is part of an evaluation of political climate challenges faced by Norway. The aim to stabilize CO{sub 2} emissions before the year 2000 is unrealistic. This is because (1) almost all electricity produced in Norway is hydropower, (2) more than half of the expected CO{sub 2} emissions up to 2020 comes from increased activities on the large and profitable petroleum deposits in the North Sea; these activities are hard to slow down, (3) substantial emission reductions in the process industry are expensive or impossible because of a lack of raw material without carbon, (4) reductions in the transport sector are impossible because of dispersed settlement, (5) strong economic growth and low unemployment imply increased energy consumption. All together this means that stabilizing the emissions in Norway costs more than in most of the OECD countries. The supposed gain in climate quality from measures in one country may ``leak`` out in the sense that the activities whose reduction caused the gain are moved a country that does not have an active climate policy and thus the global consequences may even be negative. Four examples are given: (1) Unlike most countries, Norway uses high-quality hydropower for heating. If Norway had instead used efficient petroleum fuels for heating and exported this electric energy to countries that generate electricity from inefficient carbon, then these countries would reduce the emission of CO{sub 2} by more than Norway would increase it. (2) Much of the emissions from the activities in the North Sea comes from electricity production in low-efficiency gas turbines. This emission could be eliminated by electricity supplied from land. But with today`s power balance in Norway, such electricity would be Danish carbon-generated. (3) CO{sub 2} tax on the energy intensive but efficient Norwegian process industry could move production to a country with more polluting production. (4) Reducing Norwegian gas export to Europe would decrease Norwegian CO{sub 2} emission. But this would be more than compensated by a rise in emissions from countries that would take Norway`s place as an exporter. 43 refs., 31 figs.

  18. Technical results of the French electricity supply industry 2002; Resultats techniques du secteur electrique en France 2002

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    Provisional detailed results of power flows in France in 2002, with the operating context and international comparisons. This booklet presents provisional results, expressed in rounded values because of some estimated values. Data come from measures made by RTE, completed by various actors of the power system and by estimations made by RTE: general results France; operation outlook; energy flows; exchanges with foreign countries; French consumption; French generation; network operation; access to the transmission network; development over the past 15 years; international comparisons; terminology.

  19. Technical results of the power sector in France 2001; Resultats techniques du secteur electrique en France 2001

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    Provisional detailed results of power flows in France in 2002, with the operating context and international comparisons. This booklet presents provisional results, expressed in rounded values because of some estimated values. Data come from measures made by RTE, completed by various actors of the power system and by estimations made by RTE: general results France; operation outlook; energy flows; exchanges with foreign countries; French consumption; French generation; network operation; access to the transmission network; development over the past 15 years; international comparisons; terminology.

  20. Sikkerhedskultur på sygehuse - resultater fra en spørgeskemaundersøgelse i Frederiksborg amt

    DEFF Research Database (Denmark)

    Madsen, Marlene Dyrløv

    2004-01-01

    konsistente: det vil sige at der er en tendens til, at når et afsnit udviser et højt [lavt] niveau af sikkerhedskultur på en faktor, da vil den også udvise et højt [lavt] niveau på de andre faktorer at særligt spørgsmål om rapportering oglæring, tillid og retfærdighed, kommunikation og samarbejde, samt...... muligt, søger at skabe forandringer i de eksisterende traditioner og ”historier”gennem synliggørelse og afskaffelse af tilbøjeligheder til at ”gå efter manden”, frem for ”efter bolden”, når der sker utilsigtede hændelser at man på alle niveauer i organisationen søger at skabe (registrere og genfortælle......) nye ”historier” om hvordan manhar klaret at lære af hændelser, hvordan personale, som alle ser op til, kan berette om egne fejl, og om hvordan ledelsen i afsnittet bekymrer sig om både patienter og personale at man arbejder med den interne kommunikation og specielt hvad angårformidling af den nye...

  1. Lavere mortalitet hos patienter med apopleksi og atrieflimren behandlet med antikoagulans. Resultater fra det Nationale Indikator Projekt (NIP)--sekundaerpublikation

    DEFF Research Database (Denmark)

    Andersen, Klaus Kaae; Olsen, Tom Skyhøj

    2007-01-01

    A registry of hospitalized stroke patients in Denmark included 1,909 patients with stroke and atrial fibrillation (AF) without contraindications to anticoagulation (AC) treatment. AC instituted in 60.2% was significantly associated to age and stroke severity. In a Cox Proportional Hazard regressi...

  2. Trace metals in Norwegian lakes. Preliminary results for 473 lakes; Sporeelementer i norske innsjoeer. Foreloepig resultat for 473 sjoeer

    Energy Technology Data Exchange (ETDEWEB)

    Skjelkvaale, B.L.; Henriksen, A.; Vadset, M.; Roeyset, O. [Norsk Inst. for Luftforskning, Kjeller (Norway)

    1996-04-15

    In the autumn of 1995, a regional investigation of 1500 Norwegian lakes was performed as part of a programme on monitoring long-range transfrontier pollution and fallout deposits. This report presents the levels and regional distributions of about 50 trace metals in 473 statistically selected lakes. The concentrations of some of the metals fall off markedly from south to north. The high concentration in the south is probably due to long-range pollution. Some metals have high local concentrations, ascribed to point sources or local rock minerals. Acidification may lead to increased mobilization of certain metals. Lakes in coastal areas often have important quantities of trace metals from sea water, such as B and Sr. 15 refs., 6 figs., 1 table

  3. Haemning af små abdominale aortaaneurismers ekspansion med roxithromycin. Resultater fra et randomiseret klinisk kontrolleret forsøg

    DEFF Research Database (Denmark)

    Vammen, Sten; Lindholt, Jes S; Østergaard, Lars J

    2002-01-01

    of 1.5 years. RESULTS: During the first year the mean annual expansion rate of AAA was reduced by 44% in the macrolid group (1.56 mm/year) compared to 2.80 mm/year after placebo (p = 0.02). During the second year the difference was only 5%. Multiple linear regression analysis showed that roxithromycin...... treatment and initial AAA size were significantly related to AAA expansion when adjusted for smoking, diastolic blood pressure, and IgA level > or = 20. The logistic regression analysis confirmed a significant difference in expansion rates above 2 mm annually between the intervention and placebo groups......INTRODUCTION: Macrolide treatment has been reported to reduce the risk of recurrent ischaemic heart disease. The influence of a macrolide on the expansion rate of small abdominal aortic aneurysms (AAA) is unknown at present. The aim of this study was to investigate the effect of roxithromycin...

  4. Renewable energies in France: the main results in 2007; Les energies renouvelables en France: les principaux resultats en 2007

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    This document is a status for the year 2007 of the production and consumption of renewable energies in France. This status allows to follow and measure the advance the programs sustained by the public authorities for the use and valorization of renewable energy sources. The production includes the power generation (hydraulic, wind, solar and biofuel power plants) and the heat generation (heat pumps, biofuels and refuse fuels). The consumption concerns only the heat generation and is analyzed by sector of use. Statistical production data are summarized in tables. (J.S.)

  5. Un Resultat Gravimetrique pour la Renaissance de la Theorie Corpusculaire "An Experimental Gravimetric Result for the Revival of Corpuscular Theory"

    CERN Document Server

    Duval, Maurice

    2005-01-01

    The gravitational phenomenon, founded on the assumption of absorption of a flux of gravitons through the matter, led to a law of attraction comprising a term of attenuation of gravity. The attenuation effect, which depends on the distribution of mass elements into the Sun, was compared with the relativistic effect for the orbital elements of planets. The calculations carried out with our modified law of Newton, lead to a perfect agreement for the advance of the perihelion of planets, and give an interaction cross section with the matter of 3.2x10^-17 m2/kg (approximately 10^-40 cm2/nucleon). The effect of attenuation during a solar eclipse will produce a local reduction in the soli-lunar attraction of 0.13 microgal. This small variation of gravity during the eclipse can lead to distortions of the geoid of about ten millimetres of which effect on gravity, estimated at a few microgals, is compatible with the observed gravitational anomalies. The gravimetric measurements taken in the area of Montreal during the ...

  6. Presentation of the 1998 financial results of the Framatome group; Presentation des resultats financiers 1998 du groupe Framatome

    Energy Technology Data Exchange (ETDEWEB)

    Vignon, D

    1999-04-08

    This document makes a statement of the activity of the Framatome group during the year 1998. The activities of the group are shared into two main sectors of comparable size: the energy sector (nuclear fuels, nuclear realizations, nuclear services and industrial equipments) and the connectors engineering sector (electronics, electricity, automotive industry, interconnections and microelectronics). The financial results show an important growth of the connectors engineering sector while the energy sector remained satisfactory. Results are detailed by sector and activity: energy (realizations and nuclear equipments, nuclear services, nuclear fuels and industrial equipments), connectors engineering, and research and development activity of the group. (J.S.)

  7. Danske og finske PISA-resultater i et komparativt, kvalitativt perspektiv - men en spcialpædagogisk vinkel

    DEFF Research Database (Denmark)

    Andersen, Frans Ørsted

    2009-01-01

    Artiklen baserer sig på sammenlignende studier af hverdagen i almindelige danske og finske folkeskoler. Fokus er bredt på klasserumsledelse og undervisningsdifferentiering - men også detaljer som skolemadsordninger, undervisningsmaterialer og frikvartersordninger behandles. Desuden omtales finsk ...

  8. Preliminary results of the pulmonary cancer treatment by Cyberknife; Resultats preliminaires du traitement des cancers pulmonaires par Cyberknife

    Energy Technology Data Exchange (ETDEWEB)

    Castelli, J.; Poudenx, M.; Otto, J.; Angelier, G.; Bondiau, P.Y. [Centre Antoine-Lacassagne, 06 - Nice (France); Mouroux, J. [Centre Hospitalier Universitaire Pasteur, 06 - Nice (France)

    2007-11-15

    The robotized stereotaxic radiotherapy by Cyberknife presents numerous advantages for the pulmonary tumors treatment: the Synchrony system allows to follow the lesion during the respiratory move. As, the delivered dose is higher than in classical radiotherapy and the fractionation is lesser or it exists a dose-response relationship for some pulmonary tumors. We present the results got for the first patients treated for a pulmonary lesion. The treatment of pulmonary lesions by robotized stereotaxic irradiation needs actually the implementation of fiduciary grains radio-opaque under scanography. (N.C.)

  9. NX CAM在轮胎模具花纹块加工中的应用

    Institute of Scientific and Technical Information of China (English)

    李舒; 李野

    2009-01-01

    该文主要阐述了运用NX软件的CAM功能进行轮胎模具花纹块加工的过程。文章详述了如何设置加工操作模板的父节点以编制出简单实用的花纹块加工数控程序,为相关应用提供了很好的借鉴。

  10. NX9:关注用户从改变开始

    Institute of Scientific and Technical Information of China (English)

    丁海骜

    2013-01-01

    每次新版本的推出,都会成为用户在很长时间内讨论的一个话题。如期而至的NX新版本,更加关注用户体验,提供了更多设计前端的工具,加强了与PLM的融合程度……这次的NX,给人不一样的感觉。

  11. SIEMENS PLMSOFTWARE推出NX7.0软件

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    西门子工业自动化业务部旗下机构、全球领先的产品生命周期管理(PLM)软件与服务提供商Siemens PLM Software近日宣布推出其旗舰数字化产品开发解决方案NX“软件的最新版。

  12. 提高生产力的利器——NX5

    Institute of Scientific and Technical Information of China (English)

    郭涛

    2008-01-01

    PLM技术的应用,实现了工程和制造数据之间的关联,设计和制造工程之间从传统的串行工程向并行工程进行了转变,NX软件提供了集成的,高性能的设计,模拟仿真、文档处理和制造功能。通过NX软件,企业可以显著缩短产品上市时间,提高产品质量,降低成本,并通过产品和流程知识的协调应用提高创新能力。

  13. An automation of design and modelling tasks in NX Siemens environment with original software - cost module

    Science.gov (United States)

    Zbiciak, R.; Grabowik, C.; Janik, W.

    2015-11-01

    The design-constructional process is a creation activity which strives to fulfil, as well as it possible at the certain moment of time, all demands and needs formulated by a user taking into account social, technical and technological advances. Engineer knowledge and skills and their inborn abilities have the greatest influence on the final product quality and cost. They have also deciding influence on product technical and economic value. Taking into account above it seems to be advisable to make software tools that support an engineer in the process of manufacturing cost estimation. The Cost module is built with analytical procedures which are used for relative manufacturing cost estimation. As in the case of the Generator module the Cost module was written in object programming language C# in Visual Studio environment. During the research the following eight factors, that have the greatest influence on overall manufacturing cost, were distinguished and defined: (i) a gear wheel teeth type it is straight or helicoidal, (ii) a gear wheel design shape A, B with or without wheel hub, (iii) a gear tooth module, (iv) teeth number, (v) gear rim width, (vi) gear wheel material, (vii) heat treatment or thermochemical treatment, (viii) accuracy class. Knowledge of parameters (i) to (v) is indispensable for proper modelling of 3D gear wheels models in CAD system environment. These parameters are also processed in the Cost module. The last three parameters it is (vi) to (viii) are exclusively used in the Cost module. The estimation of manufacturing relative cost is based on indexes calculated for each particular parameter. Estimated in this way the manufacturing relative cost gives an overview of design parameters influence on the final gear wheel manufacturing cost. This relative manufacturing cost takes values from 0.00 to 1,00 range. The bigger index value the higher relative manufacturing cost is. Verification whether the proposed algorithm of relative manufacturing costs estimation has been designed properly was made by comparison of the achieved from the algorithm results with those obtained from industry. This verification has indicated that in most cases both group of results are similar. Taking into account above it is possible to draw a conclusion that the Cost module might play significant role in design constructional process by adding an engineer at the selection stage of alternative gear wheels design. It should be remembered that real manufacturing cost can differ significantly according to available in a factory manufacturing techniques and stock of machine tools.

  14. NX CAM提高高速五轴机床NC编程速度

    Institute of Scientific and Technical Information of China (English)

    Siemens PLM Software

    2009-01-01

    @@ Aerospace Dynamics International公司是一家年销售额达6000万美元的供应商,主要业务为专门为航空学以及航空航天行业提供支持.公司最主要的业务挑战:在越来越短的时间内向航空航天行业的OEM厂商交付大型复杂部件;为高速五轴机床找到快速、准确的编程方法.公司不再有时间来对复杂机床进行手动编程,但是仍然需要手动编程所能提供的控制性."人们说你必须使用一种编程语言(比如APT)来完全控制机床运行.

  15. NX CAM提高高速五轴机床NC编程速度

    Institute of Scientific and Technical Information of China (English)

    Siemens

    2009-01-01

    Aerospace Dynamics International公司是一家年销售额达6000万美元的供应商,主要业务为专门为航空学以及航空航天行业提供支持。公司最主要的业务挑战:在越来越短的时间内向航空航天行业的OEM厂商交付大型复杂部件为高速五轴机床找到快速、准确的编程方法。公司不再有时间来对复杂机床进行手动编程,但是仍然需要手动编程所能提供的控制性。“人们说你必须使用一种编程语言(比如IAPT)来完全控制机床运行。

  16. Influence of Pressure on SiNx:H Film by LF-PECVD

    Institute of Scientific and Technical Information of China (English)

    Zhen-li Wen; Xiao-ning Cao; Chun-lan Zhou; Wen-jing Wang

    2012-01-01

    Hydrogenated silicon nitride films as an effective antireflection and passivation coating of silicon solar cell were prepared on p-type polished silicon substrate (1.0 Ωcm) by direct LF-PECVD (low frequency plasma enhanced chemical vapor deposition) of Centrotherm.The preferable passivation effect was obtained and the refractive index was in the range of 2.017-2.082.The refractive index of the hydrogenated silicon nitride films became larger with the increase of the pressure. Fourier transform infrared spectroscopy was used to study the pressure influence on the film structural properties.The results highlighted high hydrogen bond and high Si-N bonds density in the film,which were greatly influenced by the pressure.The passivation effect of the films was influenced by the Si dangling bonds density.Finally the effective minority liftetime degradation with time was shown and discussed by considering the relationship between the structural properties and passivation.

  17. Optimizing the production of welan gum by Alcaligenes facalis NX-3 ...

    African Journals Online (AJOL)

    USER

    2010-02-15

    Feb 15, 2010 ... State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food ... Statistical experiment design and data analysis ... study and optimize process parameters for welan gum ..... effect on welan gum synthesis.

  18. Raman Scattering of Nanocrystalline δ-TiNx Synthesized by Mechanical Milling

    Institute of Scientific and Technical Information of China (English)

    DING Zhan-hui; YAO Bin; MA Hong-an; JIA Xiao-peng; QIU Li-xia; SU Wen-hui

    2005-01-01

    @@ Introduction Raman scattering is a powerful nondestructive technique that gives vibrational information about organic and inorganic materials. Raman scattering features, such as intensity, frequency and width, are strongly dependent on compositions, defects, short-range orders, crystal structures, and internal stresses of materials. Therefore, it has been widely used to obtain detailed information about the structural properties of semiconductors, high-Tc superconductors, ceramics, catalysts, carbon based materials, and Ⅲ-Ⅴ valent metallic nitride materials, including lattice perfection, strain, crystalline, interface, and compositional uniformity[1].

  19. Modelling and simulation tooling controlled by the PLC in the robot cell in NX

    Science.gov (United States)

    Banas, W.; Gwiazda, A.; Monica, Z.; Sekala, A.; Foit, K.

    2016-08-01

    Many CAD programs allows the simulation of machines. Often, before creating the real machine can simulate the operation and see how it works. In these cases, set values of the forces acting on an element or displacement of the element. It is very easy for simple machines. Programming in this way PLC controlled system is very complicated because have to save the the entire PLC logic in the simulation program. It would be good simply connect the PLC or PLC simulation program to a CAD program enabling the simulation. There are many possibilities for sending information between the PLC and CAD. PLC to control most of the actuators using the digital outputs 0 or 1. Actuators often have two states but the transition from one to the other takes some time. By setting additional parameters may be the behaviour of the simulation as in real life. Setting these parameters is usually held in the testing phase before running it means that the system is assembled and can be damaged. Often this is the only opportunity to verify the PLC program. It is worth noting that such testing and running takes place on the production line and needs to be stopped.

  20. Large negative magnetoresistance in reactive sputtered polycrystalline GdNx films

    KAUST Repository

    Mi, W. B.

    2013-06-07

    Polycrystalline ferromagnetic GdN x films were fabricated at different N2 flow rates ( fN2 ) to modify N-vacancy concentration so as to study its influence on electrotransport. Metal-semiconductor transition appears at Curie temperature (TC ) of ∼40 K. Temperature-dependent magnetoresistance (MR) shows a peak at T C. The films at fN2  = 5, 10, 15, and 20 sccm show MR of −38%, −42%, −46%, and −86% at 5 K and 50 kOe, respectively. Above 15 K, MR is from colossal MR and from both colossal and tunneling MR below 15 K. The enhanced MR at fN2  = 20 sccm is attributed to large spin polarization of half-metallicity in GdN x with low N vacancies.

  1. Guiding outbreak management by the use of influenza A(H7Nx) virus sequence analysis

    NARCIS (Netherlands)

    Jonges, M.; Meijer, A.; Fouchier, R.A.M.; Koch, G.; Li, J.; Pan, J.C.; Shu, Y.L.; Koopmans, M.P.G.; Chen, H.

    2013-01-01

    The recently identified human infections with avian influenza A(H7N9) viruses in China raise important questions regarding possible source and risk to humans. Sequence comparison with an influenza A(H7N7) outbreak in the Netherlands in 2003 and an A(H7N1) epidemic in Italy in 1999–2000 suggests that

  2. Guiding outbreak management by the use of influenza a(H7NX) virus sequence analysis

    NARCIS (Netherlands)

    M. Jonges (Marcel); A. Meijer (Adam); R.A.M. Fouchier (Ron); G. Koch (Guus); J. Li; J.C. Pan; H. Chen (Hong); Y.L. Shu (Yue-Long); M.P.G. Koopmans D.V.M. (Marion)

    2013-01-01

    textabstractThe recently identified human infections with avian influenza A(H7N9) viruses in China raise important questions regarding possible source and risk to humans. Sequence comparison with an influenza A(H7N7) outbreak in the Netherlands in 2003 and an A(H7N1) epidemic in Italy in 1999-2000 s

  3. Facile charge transport in FeNx/Mo₂N/CNT nanocomposites for efficient hydrogen evolution reactions

    Indian Academy of Sciences (India)

    KASINATH OJHA; SHIVALI BANERJEE; ASHOK K GANGULI

    2017-07-01

    Molybdenum based materials are gaining importance as electrocatalysts for hydrogen evolution reaction because of their lowcost and good electrocatalytic efficiency. Introducing iron nitride with molybdenum nitride as a composite results in efficient hydrogen evolution activity with current density of ∼120mA/cm2 at −400 mVvs. RHE. The nanocomposites were characterized using powder XRD, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), ElectronDiffraction, ThermogravimetricAnalysis and FTIRSpectroscopy. The electrochemical investigations suggest that the electrocatalytic activity of the composite increases with iron nitride content. The composite exhibits good electrochemical stability upto 42 hours in acidic medium. The hydrogen evolution reaction (HER) follows Volmer-Heyrovsky mechanism where Volmer reaction is the rate determing step.

  4. Effective passivation of Si surfaces by plasma deposited SiOx/a-SiNx:H stacks

    Science.gov (United States)

    Dingemans, G.; Mandoc, M. M.; Bordihn, S.; van de Sanden, M. C. M.; Kessels, W. M. M.

    2011-05-01

    Very low surface recombination velocities field-effect passivation was absent for a reference stack comprising thermally grown SiO2. The results indicate that hydrogenation of interface states played a key role in the passivation and remained effective up to annealing temperatures >800 °C.

  5. Preoperative radiation therapy for upper rectal cancer T3,T4/Nx: selectivity essential.

    Science.gov (United States)

    Popek, Sarah; Tsikitis, Vassiliki Liana; Hazard, Lisa; Cohen, Alfred M

    2012-06-01

    This review explores the current available literature regarding the role of neoadjuvant therapy for upper locally advanced rectal cancers (≥10 cm-15 cm). Although there is a paucity of data evaluating the outcomes of preoperative chemoradiation for upper rectal cancers the authors suggest that T3N0 tumors will not likely benefit from radiation and that treatment of T4N0 should be individualized. Copyright © 2012. Published by Elsevier Inc.

  6. Digital PSK to BiO-L demodulator for 2 sup nx(bit rate) carrier

    Science.gov (United States)

    Shull, T. A.

    1979-01-01

    A phase shift key (PSK) to BiO-L demodulator which uses standard digital integrated circuits is discussed. The demodulator produces NRZ-L, bit clock, and BiO-L outputs from digital PSK input signals for which the carrier is a 2 to the Nth multiple of the bit rate. Various bit and carrier rates which are accommodated by changing various component values within the demodulator are described. The use of the unit for sinusoidal inputs as well as digital inputs is discussed.

  7. Pathogenesis and transmission of highly pathogenic avian influenza H5Nx in swine

    Science.gov (United States)

    Introduction Influenza A viruses (IAV) periodically transmit between pigs, people, and birds. If two IAV strains infect the same host, genes can reassort to generate progeny virus with potential to be more infectious or avoid immunity. Pigs pose a risk for such reassortment. Highly pathogenic avian ...

  8. Influence of bias voltage on structural and optical properties of TiNx thin films

    Science.gov (United States)

    Singh, Omveer; Dahiya, Raj P.; Malik, Hitendra K.; Kumar, Parmod

    2015-08-01

    In the present work, Ti thin films were deposited on Si substrate using DC sputtering technique. Indigenous hot cathode arc discharge plasma system was used for nitriding over these samples, where the plasma parameters and work piece can be controlled independently. A mixture of H2 and N2 gases (in the ratio of 80:20) was supplied into the plasma chamber. The effect of bias voltage on the crystal structure, morphology and optical properties was investigated by employing various physical techniques such as X-ray Diffraction, Atomic Force Microscopy and UV-Vis spectrometry. It was found that bias voltage affects largely the crystal structure and band gap which in turn is responsible for the modifications in optical properties of the deposited films.

  9. [Stress analysis of artificial bionic knee joint based on UG6.0 NX NASTRAN].

    Science.gov (United States)

    Shi, Gengqiang

    2014-02-01

    This article introduces the basic principles of finite element analysis in biomechanics, focusing on the basic principles of a variety of finite element analysis software, and their respective characteristics. In addition, it also de scribes the basic stress analysis of UGNX6.0 NASTRAN analysis for artificial knee process, i. e. the choice of the type, material definition, the set of constants, finite element mesh division and the finite element results of the analysis. Finite element analysis and evaluation of the design of personalized artificial knee were carried out, so that the rationality of the geometric design of the structure of the experimental design of artificial knee has been verified.

  10. NBLAST: a cluster variant of BLAST for NxN comparisons

    Directory of Open Access Journals (Sweden)

    Dumontier Michel

    2002-05-01

    Full Text Available Abstract Background The BLAST algorithm compares biological sequences to one another in order to determine shared motifs and common ancestry. However, the comparison of all non-redundant (NR sequences against all other NR sequences is a computationally intensive task. We developed NBLAST as a cluster computer implementation of the BLAST family of sequence comparison programs for the purpose of generating pre-computed BLAST alignments and neighbour lists of NR sequences. Results NBLAST performs the heuristic BLAST algorithm and generates an exhaustive database of alignments, but it only computes alignments (i.e. the upper triangle of a possible N2 alignments, where N is the set of all sequences to be compared. A task-partitioning algorithm allows for cluster computing across all cluster nodes and the NBLAST master process produces a BLAST sequence alignment database and a list of sequence neighbours for each sequence record. The resulting sequence alignment and neighbour databases are used to serve the SeqHound query system through a C/C++ and PERL Application Programming Interface (API. Conclusions NBLAST offers a local alternative to the NCBI's remote Entrez system for pre-computed BLAST alignments and neighbour queries. On our 216-processor 450 MHz PIII cluster, NBLAST requires ~24 hrs to compute neighbours for 850000 proteins currently in the non-redundant protein database.

  11. Mixed ionic and electronic conductor based on Sr.sub.2Fe.sub.2-xM0.sub.XO.sub.6 perovskite

    Science.gov (United States)

    Chen, Fanglin; Liu, Qiang

    2014-07-15

    In accordance with the present disclosure, a method for fabricating a symmetrical solid oxide fuel cell is described. The method includes synthesizing a composition comprising perovskite and applying the composition on an electrolyte support to form both an anode and a cathode.

  12. Amplified segment in the 'Down syndrome critical region' on HSA21 shared between Down syndrome and euploid AML-M0 excludes RUNX1, ERG and ETS2.

    NARCIS (Netherlands)

    Canzonetta, C.; Hoischen, A.; Giarin, E.; Basso, G.; Veltman, J.A.; Nacheva, E.; Nizetic, D.; Groet, J.

    2012-01-01

    Children with Down syndrome have a 20- to 50-fold increased risk of acute lymphocytic or myeloid leukaemia. Whole or partial gains of chromosome 21 have been described in multiple childhood leukaemias, and have recently been reported as a likely primary event in B-precursor-acute lymphoblastic

  13. Dummy run for a phase II study of stereotactic body radiotherapy of T1-T2 N0M0 medical inoperable non-small cell lung cancer

    DEFF Research Database (Denmark)

    Djärv, Emma; Nyman, Jan; Baumann, Pia;

    2006-01-01

    In forthcoming multicentre studies on stereotactic body radiotherapy       (SBRT) compliance with volume and dose prescriptions will be mandatory to       avoid unnecessary heterogeneity bias. To evaluate compliance in a       multicentre setting we used two cases from an ongoing phase II study......,       prescribing doses and creating dose plans. Volumes and doses of the 12       dose plans were evaluated according to the study protocol. For the two       patients the GTV volume range was 24 to 39 cm3 and 26 to 41 cm3,       respectively. The PTV volume range was 90 to 116 cm3, and 112 to 155 cm3......,       respectively. For all plans the margin between CTV and PTV in all       directions followed in detail the protocol. The prescribed dose was for       all centres 45 Gy/3 fractions (isocentre dose about 66 Gy). The mean GTV       doses ranged from 63 to 67 Gy and from 63 to 68 Gy, respectively...

  14. Ferromagnetic half-metallic characteristic in bulk Ni 0.5M 0.5O (M=Cu, Zn and Cd): A GGAU study

    KAUST Repository

    Mi, Wenbo

    2012-07-01

    Ferromagnetic half metallicity with a high spin polarization of 100% was predicted in the bulk Ni 0.5Cu 0.5O using density-functional theory method. The band gap of majority spin is 3.45 eV for Ni 0.5Cu 0.5O. The density of states of minority spin at the Fermi level are mainly from Cu 3d and O 2p in the Ni 0.5Cu 0.5O. The magnetic moments are from Ni 3d states. Ni 0.5Zn 0.5O and Ni 0.5Cd 0.5O systems are ferromagnetic insulators, but the magnetic moment of Ni 2 ions is enhanced by the Zn and Cd incorporation. Therefore, Ni 0.5Cu 0.5O is the potential candidate for spintronics devices because of the predicted high spin polarization. © 2012 Elsevier Ltd. All rights reserved.

  15. MÀ G*ý×C½ÆŒE**Carene, 350F, 313 ppm-m 0.125cm-13 ...

    Science.gov (United States)

    2015-09-01

    ... 7ÈŸ ^TD -5O * Ä*w í*Ñ ©†Þ ãéÕ ôU ... âÍ **ù¡*óù¤*'¿ž* à~*‚•u*Jç˜*“²ª*}s±*jZ³* ¥*hÞ'*Jí˜*³ ¦*O æ*ñ*¹*À*:*mÐD*ÿñu*ÙGG*³ò6*&ò¤*¾²'*@¸9*ûÇ'*EUQ*ž}I ...

  16. High-Resolution OH and CH2O Visualization in a Premixed Cavity-Anchored Ethylene-Air Flame in a M = 0.6 Flowfield

    Science.gov (United States)

    Geipel, Clayton M.; Rockwell, Robert D.; Chelliah, Harsha K.; Cutler, Andrew D.; Spelker, Christopher A.; Hashem, Zeid; Danehy, Paul M.

    2017-01-01

    OH and CH2O were imaged in a premixed, cavity-anchored, ethylene-air turbulent flame using a high resolution planar laser-induced fluorescence (PLIF) system. The electrically-heated, continuous flow facility (UVa Supersonic Combustion Facility, Configuration E) consisted of a Mach 2 nozzle, an isolator with fuel injectors, a test section with a cavity flame holder and optical access, and an extender. Standard test conditions comprised total temperature 1200 K, total pressure 300 kPa, local equivalence ratio near 0.4, and local Mach number near 0.6. OH PLIF data was also collected for a case with reduced total temperature and another with reduced equivalence ratio. OH and CH2O were excited in separate experiments with light sheets at 283.55 nm and 352.48 nm, respectively. A light sheet of approximate thickness 25 ?m illuminated the stream-wise midplane. This plane was imaged for 120 mm downstream of the backward-facing step. The intensified camera system imaged OH with magnification 1.97, a square 6.67 mm field of view, and in-plane resolution of 39 ?m. The smallest observed OH structures observed were approximately 100 ?m wide. The CH2O PLIF image signal was much weaker; the smallest observed structures were approximately 200 ?m wide. Composite fluorescence images were computed for the observed area.

  17. Development of the V4.2m5 and V5.0m0 Multigroup Cross Section Libraries for MPACT for PWR and BWR

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Kang Seog [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Clarno, Kevin T. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Gentry, Cole [Univ. of Tennessee, Knoxville, TN (United States); Wiarda, Dorothea [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Williams, Mark L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Kochunas, Brendan [Univ. of Michigan, Ann Arbor, MI (United States); Liu, Yuxuan [Univ. of Michigan, Ann Arbor, MI (United States); Palmtag, Scott [Core Physics, Inc., Wilmington, NC (United States); Godfrey, Andrew T. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2017-03-01

    The MPACT neutronics module of the Consortium for Advanced Simulation of Light Water Reactors (CASL) core simulator is a 3-D whole core transport code being developed for the CASL toolset, Virtual Environment for Reactor Analysis (VERA). Key characteristics of the MPACT code include (1) a subgroup method for resonance selfshielding and (2) a whole-core transport solver with a 2-D/1-D synthesis method. The MPACT code requires a cross section library to support all the MPACT core simulation capabilities which would be the most influencing component for simulation accuracy.

  18. Schmincke’s Tumor, Carcinoma of the Base of the Tongue c T1-2, cN2c M0 – A Case Report

    Directory of Open Access Journals (Sweden)

    H. Merz

    2010-03-01

    Full Text Available Background: Lymphoepithelial tumors are the most common carcinomas of the nasopharynx. The non-differentiated tumor, also called Schmincke’s tumor, is more prevalent in the African and Chinese population. The incidence of the tumor according to age peaks between 20 and 30 years of age, and after 60 years of age. The tumor is rarely located outside of the nasopharynx. Case Report: This report is about a 73-year-old female patient diagnosed with a tumor of the base of the tongue. The histological result shows a low-grade carcinoma of the squamous epithelium, a lymphoepithelial carcinoma. Conclusion: Despite the tumor’s rare manifestation outside the nasopharynx, one must also consider the non-differentiated carcinoma of lymphoepithelial matrix. Especially due to the well-known early tumor spreading, cervical lymph node swelling on both sides can be recognized as a possible early symptom. First-line therapy consists of primary radiation of the tumor’s primary region and its lymphoid draining channels. Concomitant chemotherapy can be applied. In case of cervical tumor spreading, a neck dissection reduces the risk of local recurrence.

  19. Electrochemical stability of Li6.5La3Zr2M0.5O12 (M = Nb or Ta against metallic lithium

    Directory of Open Access Journals (Sweden)

    Yunsung eKim

    2016-05-01

    Full Text Available The electrochemical stability of Li6.5La3Zr1.5Nb0.5O12 (LLZNO and Li6.5La3Zr1.5Ta0.5O12 (LLZTO against metallic Li was studied using direct current (DC and electrochemical impedance spectroscopy (EIS. Dense polycrystalline LLZNO (ρ=97 % and LLZTO (ρ=92 % were made using sol-gel synthesis and rapid induction hot-pressing at 1100 °C and 15.8 MPa. During DC cycling tests at room temperature (±0.01 mA/cm2 for 36 cycles, LLZNO exhibited an increase in Li-LLZNO interface resistance and eventually short-circuiting while the LLZTO was stable. After DC cycling, LLZNO appeared severely discolored while the LLZTO did not change in appearance. We believe the increase in Li-LLZNO interfacial resistance and discoloration are due to reduction of Nb5+ to Nb4+. The negligible change in interfacial resistance and no color change in LLZTO suggest that Ta5+ may be more stable against reduction than Nb5+ in cubic garnet versus Li during cycling.

  20. Inguinal hernia in stage M0 prostate cancer: a comparison of incidence in men treated with and without radical retropubic prostatectomy--an analysis of 1105 patients

    DEFF Research Database (Denmark)

    Stranne, Johan; Hugosson, Jonas; Iversen, Peter;

    2005-01-01

    To analyze the incidence of inguinal hernia (IH) in a large group of patients with nonmetastatic prostate cancer who were treated nonoperatively, and to compare it with the incidence in a subset of patients who had undergone radical retropubic prostatectomy (RRP). IH has been reported in 12% to 21...