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Sample records for aktivatsiya svyazi c-s

  1. Revised Atomistic Models of the Crystal Structure of C-S-H with high C/S Ratio

    NASA Astrophysics Data System (ADS)

    Kovačević, Goran; Nicoleau, Luc; Nonat, André; Veryazov, Valera

    2016-09-01

    The atomic structure of calcium-silicate-hydrate (C1.67-S-Hx) has been studied. Atomistic C-S-H models suggested in our previous study have been revised in order to perform a direct comparison of energetic stability of the different structures. An extensive set of periodic structures of C-S-H with variation of water content was created, and then optimized using molecular dynamics with reactive force field ReaxFF and quantum chemical semiempirical method PM6. All models show organization of water molecules inside the structure of C-S-H. The new geometries of C-S-H, reported in this paper, show lower relative energy with respect to the geometries from the original definition of C-S-H models. Model that corresponds to calcium enriched tobermorite structure has the lowest relative energy and the density closest to the experimental values.

  2. Microbial cleavage of organic C-S bonds

    DOEpatents

    Kilbane, II, John J.

    1994-01-01

    A microbial process for selective cleavage of organic C--S bonds which may be used for reducing the sulfur content of sulfur-containing organic carbonaceous materials, Microorganisms of Rhodococcus rhodochrous and Bacillus sphaericus have been found which have the ability of selective cleavage of organic C--S bonds. Particularly preferred microorganisms are Rhodococcus rhodochrous strain ATCC 53968 and Bacillus sphaericus strain ATCC 53969 and their derivatives.

  3. Microbial cleavage of organic C-S bonds

    DOEpatents

    Kilbane, J.J. II.

    1994-10-25

    A microbial process is described for selective cleavage of organic C-S bonds which may be used for reducing the sulfur content of sulfur-containing organic carbonaceous materials. Microorganisms of Rhodococcus rhodochrous and Bacillus sphaericus have been found which have the ability of selective cleavage of organic C-S bonds. Particularly preferred microorganisms are Rhodococcus rhodochrous strain ATCC 53968 and Bacillus sphaericus strain ATCC 53969 and their derivatives.

  4. C. S. Peirce's Dialogical Conception of Sign Processes

    ERIC Educational Resources Information Center

    Bergman, Mats

    2005-01-01

    This article examines the contention that the central concepts of C. S. Peirce's semeiotic are inherently communicational. It is argued that the Peircean approach avoids the pitfalls of objectivism and constructivism, rendering the sign-user neither a passive recipient nor an omnipotent creator of meaning. Consequently, semeiotic may serve as a…

  5. The Use of C. S. Lewis's "Poems" for Oral Interpretation.

    ERIC Educational Resources Information Center

    Keefe, Carolyn

    Suggestions are offered in this paper for adapting C. S. Lewis's poems for oral interpretation. A discussion of Lewis's lifelong correspondence with his friend Arthur Greeves provides insights into Lewis's perceptions of his own writing. Eighty poems selected from Lewis's "Poems" as appropriate for oral interpretation are classified…

  6. C-S bond cleavage by a polyketide synthase domain

    PubMed Central

    Ma, Ming; Lohman, Jeremy R.; Liu, Tao; Shen, Ben

    2015-01-01

    Leinamycin (LNM) is a sulfur-containing antitumor antibiotic featuring an unusual 1,3-dioxo-1,2-dithiolane moiety that is spiro-fused to a thiazole-containing 18-membered lactam ring. The 1,3-dioxo-1,2-dithiolane moiety is essential for LNM’s antitumor activity, by virtue of its ability to generate an episulfonium ion intermediate capable of alkylating DNA. We have previously cloned and sequenced the lnm gene cluster from Streptomyces atroolivaceus S-140. In vivo and in vitro characterizations of the LNM biosynthetic machinery have since established that: (i) the 18-membered macrolactam backbone is synthesized by LnmP, LnmQ, LnmJ, LnmI, and LnmG, (ii) the alkyl branch at C-3 of LNM is installed by LnmK, LnmL, LnmM, and LnmF, and (iii) leinamycin E1 (LNM E1), bearing a thiol moiety at C-3, is the nascent product of the LNM hybrid nonribosomal peptide synthetase (NRPS)-acyltransferase (AT)-less type I polyketide synthase (PKS). Sulfur incorporation at C-3 of LNM E1, however, has not been addressed. Here we report that: (i) the bioinformatics analysis reveals a pyridoxal phosphate (PLP)-dependent domain, we termed cysteine lyase (SH) domain (LnmJ-SH), within PKS module-8 of LnmJ; (ii) the LnmJ-SH domain catalyzes C-S bond cleavage by using l-cysteine and l-cysteine S-modified analogs as substrates through a PLP-dependent β-elimination reaction, establishing l-cysteine as the origin of sulfur at C-3 of LNM; and (iii) the LnmJ-SH domain, sharing no sequence homology with any other enzymes catalyzing C-S bond cleavage, represents a new family of PKS domains that expands the chemistry and enzymology of PKSs and might be exploited to incorporate sulfur into polyketide natural products by PKS engineering. PMID:26240335

  7. Surface carbonation of synthetic C-S-H samples: A comparison between fresh and aged C-S-H using X-ray photoelectron spectroscopy

    SciTech Connect

    Black, Leon Garbev, Krassimir; Gee, Ian

    2008-06-15

    This paper presents a continuation of studies into silicate anion structure using X-ray photoelectron spectroscopy (XPS). A series of C-S-H samples have been prepared mechanochemically, and then stored under ambient conditions for six months. Storage led to surface carbonation, the extent of which was dependent upon the calcium/silicon ratio of the fresh sample. Carbonation arose through decalcification of the C-S-H, leading to increased silicate polymerisation. The surfaces of the most calcium-rich phases (C/S = 1.33 and 1.50) underwent complete decalcification to yield silica (possibly containing some silanol groups) and calcium carbonate. Carbonation, and hence changes in silicate anion structure, was minimal for the C-S-H phases with C/S = 0.67 and 0.75.

  8. Spectroscopy study of Zn, Cd, Pb and Cr ions immobilization on C-S-H phase.

    PubMed

    Żak, Renata; Deja, Jan

    2015-01-05

    Calcium silicate hydrates (C-S-H) have a large number of structural sites available for cations and anions to bind. The C-S-H phases are materials which have ability to toxic ions immobilization. Immobilization mechanisms for C-S-H include sorption, phase mixing, substitution and precipitation of insoluble compounds. This study presents the C-S-H (prepared with C/S ratios 1.0) phase as absorbent for immobilization of Zn, Cd, Pb and Cr ions. The C-S-H spectra before and after incorporation of heavy metals ions into the C-S-H structure were obtained. The effect of added heavy metals ions on the hydration phenomena was studied by means of X-ray diffractions analysis. FTIR spectra was measured. The microstructure and phase composition of C-S-H indicate that they can play an essential role in the immobilization of heavy metals. The properties of C-S-H in the presence of Zn, Cd, Pb and Cr cations were studied. The leaching ML test was used to evaluate the level of immobilization of heavy metals in C-S-H. The leached solutions are diluted and analyzed using atomic absorption spectrometry (AAS) and the activated solid particles are separated, washed, desiccated and analyzed by Fourier transform infrared (FTIR) spectroscopy. It was found that the degree of Cd, Zn, Pb and Cr cations immobilization was very high (exceeding 99.96%).

  9. Computational Material Modeling of Hydrated Cement Paste Calcium Silicate Hydrate (C-S-H) Chemistry Structure - Influence of Magnesium Exchange on Mechanical Stiffness: C-S-H Jennite

    DTIC Science & Technology

    2015-04-27

    scales. Features and changes in material chemistry /nano scale influence the hydration process, formed micro scale morphology, associated properties...hydrated cement paste constituent - calcium silicate hydrate (C-S-H) based on its material chemistry structure are studied following a molecular dynamics... Chemistry Structure - Influence of Magnesium Exchange on Mechanical Stiffness: C- S-H Jennite The views, opinions and/or findings contained in this

  10. Does the Al substitution in C-S-H(I) change its mechanical property?

    SciTech Connect

    Oh, Jae Eun; Clark, Simon M.; Monteiro, Paulo J.M.

    2011-01-15

    This study examines the influence of Al substitution for Si on the bulk modulus of calcium silicate hydrate I [C-S-H(I)], a structural analogue of C-S-H, by performing high-pressure synchrotron X-ray diffraction experiments in two C-S-H(I) samples: one a hydration product of alkali-activated slag and the other a synthetic C-S-H(I). The test result shows that not only the bulk modulus but also the incompressibility of the lattice parameters a, b, and c of two C-S-H(I) samples are very similar to each other, regardless of the Al substitution. This result may be due to the four-coordinated configuration of the substituted Al, which makes the dreierketten silicate chains maintain the same arrangement after the substitution.

  11. 22. DIABLO POWERHOUSE: COOLING WATER PUMPS (WESTINGHOUSE C.S. INDUCTION MOTORS), ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. DIABLO POWERHOUSE: COOLING WATER PUMPS (WESTINGHOUSE C.S. INDUCTION MOTORS), 1989. - Skagit Power Development, Diablo Powerhouse, On Skagit River, 6.1 miles upstream from Newhalem, Newhalem, Whatcom County, WA

  12. Depositional and diagenetic C-S-Fe signatures in early Paleozoic normal marine shales

    SciTech Connect

    Raiswell, R.; Al-Biatty, H.J. )

    1989-05-01

    The degree of pyritisation (DOP) of Cambrian-Silurian normal marine shales is always less than 0.70, similar to that found previously for sediments of Devonian to Cretaceous ages. This indicates that DOP can be used as a paleoenvironmental indicator of deposition from normal marine (i.e., oxygenated) bottom waters throughout the Phanerozoic record. Although the range in DOP is similar, significant variations in normal marine C/S ratios can occur. Relatively low C/S ratios (<1) result from depositional or diagenetic conditions which give high reactive iron contents (which are positively correlated with increasing organic carbon concentrations), whereas higher C/S ratios (>1.5) result from lower reactive iron contents (which are also independent of organic carbon variations). Reactive iron contents, and hence normal marine C/S ratios, are able to vary at a regional or basinal level.

  13. Improving the structural consistency of C-S-H solid solution thermodynamic models

    SciTech Connect

    Kulik, Dmitrii A.

    2011-05-15

    Simple aqueous-solid solution models of C-S-H (calcium silicate hydrate) are widely used in studies of cement hydration and waste-cement interactions. Even without a clear structural/mechanistic basis, such thermodynamic models yield a good description of solubility data in [Ca]-C/S space, while only satisfactory in [Si]-C/S, H{sub 2}O-C/S, [Ca]-[Si] spaces and in the 0.1 < C/S < 0.8 range. Here, using a multi-site (sublattice) concept, the ideal solid solution model of C-S-H is revised to make it consistent with the Richardson-Groves structural model of C-S-H and with the modern interpretation of spectroscopic ({sup 29}Si MAS NMR) and solubility data. Consideration of two site substitutions, (1) coupled H{sub 2}OCa{sup 2+} for SiO{sub 2}H{sub 2}{sup 2+} replacement in bridging tetrahedral and adjacent interlayer sites, and (2) substitution of interstitial Ca(OH){sub 2} for a vacancy, leads to a new CSHQ model of (A,B) (C,D)X type composed of two tobermorite-like and two jennite-like end members. Because this ideal sublattice SS model cannot fit solubility data well at 0.8 < C/S < 1.1, a simpler CSH3T model is constructed from a polymeric TobH (CaO){sub 2}(SiO{sub 2}){sub 3}(H{sub 2}O){sub 5}, a dimeric T2C (CaO){sub 3}(SiO{sub 2}){sub 2}(H{sub 2}O){sub 5}, and an ordered pentameric T5C (CaO){sub 2.5}(SiO{sub 2}){sub 2.5}(H{sub 2}O){sub 5} tobermorite-like end members. This solid solution model, limited to the range 0.67 < C/S < 1.5, has a correct built-in dependence of the mean silicate chain length on C/S, yields quite realistic fits to the solubility data, and provides a basis for extensions with foreign cations whose sites in the defect-tobermorite structure of C-S-H are known. To account for C-S-H compositions with C/S > 1.5, CSHQ end members were downscaled to one tetrahedral site and used within the simple mixing model. Despite some loss of structural consistency, the solubility and mean silicate chain length data can be reproduced well with this downscaled

  14. Effect of temperature on the microstructure of calcium silicate hydrate (C-S-H)

    SciTech Connect

    Gallucci, E. Zhang, X.; Scrivener, K.L.

    2013-11-15

    Temperature affects the properties of concrete through its effect on the hydration of cement and its associated microstructural development. This paper focuses on the modifications to C-S-H induced by isothermal curing between 5 and 60 °C. The results show that as the temperature increases (within the range studied) the C/S ratio of C-S-H changes only slightly, with a higher degree of polymerisation of silicate chains, but there is a significant decrease in its bound water content and an increase of apparent density of 25%. This increase seems to come from a different packing of C-S-H at the nanoscale. As a consequence of these changes, the microstructure of the cement paste is much coarser and porous, which explains the lower final strengths obtained by curing at elevated temperatures. -- Highlights: •C-S-H structure studied at the atomic level •Multiple analytical techniques used •Studies conducted at temperatures above and below normal temperatures.

  15. Radio Supernovae: Circum-Stellar Investigation (C.S.I.) of Supernova Progenitor Stars

    DTIC Science & Technology

    2009-02-24

    ar X iv :0 90 2. 40 59 v1 [ as tr o- ph .H E ] 2 4 Fe b 20 09 Radio Supernovae : Circum-Stellar Investigation (C.S.I.) of Supernova Progenitor...FEB 2009 2. REPORT TYPE 3. DATES COVERED 00-00-2009 to 00-00-2009 4. TITLE AND SUBTITLE Radio Supernovae : Circum-Stellar Investigation (C.S.I...of Supernova Progenitor Stars 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f

  16. Incorporation of zinc into calcium silicate hydrates, Part I: formation of C-S-H(I) with C/S=2/3 and its isochemical counterpart gyrolite

    SciTech Connect

    Stumm, Andreas . E-mail: andreas.stumm@itc-wgt.fzk.de; Garbev, Krassimir; Beuchle, Guenter; Black, Leon; Stemmermann, Peter; Nueesch, Rolf

    2005-09-01

    We have investigated the incorporation of zinc into both nanocrystalline and crystalline calcium silicate hydrates with starting C/S ratios of 2/3 (0.66). Zinc was added replacing calcium in the starting mixtures [Zn/(Zn+Ca)=0-1/4; 0-10 wt.% Zn], and the resultant phases were characterised using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), differential thermal analysis-thermogravimetry (DTA-TG) and environmental scanning electron microscopy (ESEM). In both groups of samples, increasing zinc content led to gradual structural changes, until eventually a second phase was formed. Zinc was incorporated to similar limits in both sets of samples. The thermal stability of the structures increased to a certain zinc content, beyond which there was structural destabilisation. Zinc incorporation is possible up to {approx}6 wt.%. Our observations strongly indicate similar zinc incorporation mechanisms in both sample series, namely incorporation of zinc into the interlayer of C-S-H(I) and the X-sheet of gyrolite for nanocrystalline and crystalline samples, respectively.

  17. 363. A.C.S., Delineator March 1934 STATE OF CALIFORNIA; DEPARTMENT OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    363. A.C.S., Delineator March 1934 STATE OF CALIFORNIA; DEPARTMENT OF PUBLIC WORKS; SAN FRANCISCO - OAKLAND BAY BRIDGE; CONTRACT NO. 6A; SUPERSTRUCTURE - WEST BAY CROSSING; SAN FRANCISCO ANCHORAGE; AMERICAN BRIDGE CO.; AMBRIDGE PLANT; ORDER NO. G4866; SHEET NO E3 - San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Francisco, San Francisco County, CA

  18. 378. A.C.S., Delineator March 1933 STATE OF CALIFORNIA; DEPARTMENT OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    378. A.C.S., Delineator March 1933 STATE OF CALIFORNIA; DEPARTMENT OF PUBLIC WORKS; SAN FRANCISCO - OAKLAND BAY BRIDGE; CONTRACT NO. 6A; SUPERSTRUCTURE - WEST BAY CROSSING; YERBA BUENA ANCHORAGE & CABLE BENT. AMERICAN BRIDGE CO.; AMBRIDGE PLANT; ORDER NO. G 4866; SHEET NO. E4 - San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Francisco, San Francisco County, CA

  19. Unusual nickel-mediated C-S cleavage of alkyl and aryl sulfoxides.

    PubMed

    Schaub, Thomas; Backes, Marc; Radius, Udo

    2007-05-28

    The first examples of transition metal mediated C-S cleavage of sulfoxides containing sp2- and sp3-hybridized carbon bonds attached to the sulfur atom and the first example of a structurally characterized complex featuring an oxygen-bound sulfinyl ligand are presented.

  20. Oral Interpretation of C.S. Lewis'"Narnia Tales": A Refracting of "Pictures."

    ERIC Educational Resources Information Center

    Keefe, Carolyn

    "The Chronicles of Narnia" are a series of seven fairy tales written by C.S. Lewis that have become popular with both children and adults. Lewis points to five aspects of the fairy tale form that made the form suitable for expressing the images he saw. The aspects are: (1) no love interest; (2) no close psychology; (3) severe restraints…

  1. C.S. Lewis as a Forensic Figure in the Religious Agora.

    ERIC Educational Resources Information Center

    Keefe, Carolyn

    This paper considers the British thinker C.S. Lewis as a "forensic figure," defining "forensic" in the sense of public discussion and debate. The paper relates that, long before Lewis emerged as a public persuader, he learned to hold his own in private exchanges with William T. Kirkpatrick, his tutor from 1914-1917, and in…

  2. An Integrated Perspective of Humanism and Supernaturalism for Education: C. S. Lewis's Version of Education

    ERIC Educational Resources Information Center

    Lee, Seung Chun

    2013-01-01

    This paper explores some theoretical reflections on the connection between C. S. Lewis's thoughts on the purpose and process of education and his understanding of supernatural human nature which has been relatively little explored. An introduction about Lewis's career as a college teacher blends into the background of this paper. It is followed by…

  3. Paradise Lost and Found: Obedience, Disobedience, and Storytelling in C.S. Lewis and Philip Pullman.

    ERIC Educational Resources Information Center

    Wood, Naomi

    2001-01-01

    Considers how in the fantasy series "The Chronicles of Narnia" and "His Dark Materials," by C.S. Lewis and Philip Pullman respectively, the authors use symbols and themes from "Paradise Lost." Notes that each author's narrative choice uses his view of cosmic order to persuade readers that obedience should be…

  4. Dorothy L. Sayers and C. S. Lewis: Christian Postmodernism beyond Boundaries

    ERIC Educational Resources Information Center

    Yuasa, Kyoko

    2012-01-01

    Modern critics do not consider science fiction and mystery novels to be "serious reading", but Dorothy L. Sayers and C. S. Lewis questioned the boundaries between "popular" and "serious" literature. Both Christian writers critically discuss the spiritual crisis of the modern world in each fiction genre. This paper…

  5. Engineering the bonding scheme in C-S-H: The iono-covalent framework

    SciTech Connect

    Pellenq, R.J.-M.; Lequeux, N.; Damme, H. van

    2008-02-15

    On the basis of recent molecular simulation and experimental studies, we discuss two possible strategies for tuning the mechanical properties of cementitious materials by modifying the bonding scheme in the hydrates at molecular level. We focus the discussion on the calcium silicate hydrates (C-S-H). A first strategy would be based on the strengthening of the network of cohesion forces acting between the individual C-S-H lamellae or between their crystallites. Atomic scale simulations by ab initio, molecular dynamics and energy minimization techniques show that the iono-covalent forces between individual C-S-H layers or C-S-H layer stacks, separated by strongly localized calcium ions and water molecules, are orders of magnitude larger than the ionic correlation forces acting between C-S-H surfaces separated by nm- or multi-nm-thick layers of mobile water molecules and ions. The elastic properties derived from this iono-covalent bonding scheme are in good agreement with experimental values obtained by ultrasonic or statistical ('grid') nanoindentation techniques. The concept picture for C-S-H which follows is that of a crystalline semi-continuum, with dense domains ('crystallites' or 'particles') iono-covalently bonded to each other, possibly entangled also, and embedded as long as the mesoscale porosity is water-saturated in a relatively weak attractive stress field due to fluctuating electrostatic forces. Depending on the size, the aspect ratio, and the turbostratic order of the crystallites, and also the composition of the interstitial solution, the relative importance of each contribution could be modified. This provides the basis for a better control of properties such as early age or long term strength development for instance. In this respect, the microstructure-properties relationships in clay minerals provide interesting leads, pointing to the importance of bonding continuity rather than bond strength. A second strategy to tune the mechanical properties of

  6. Sulfide synthesis through copper-catalyzed C-S bond formation under biomolecule-compatible conditions.

    PubMed

    Zhang, Yonghong; Li, Yiming; Zhang, Xiaomei; Jiang, Xuefeng

    2015-01-18

    We report here an efficient and mild method for constructing C-S bonds. The reactions were carried out with Na2S2O3 as a sulfurating reagent, CuSO4 as a catalyst, and water as solvent without any surfactant. The products were achieved in moderate to excellent yields at room temperature under air. Notably, this reaction is compatible with various biomolecules including amino acids, oligosaccharides, nucleosides, proteins, and cell lysates.

  7. Characterisation of crystalline C-S-H phases by X-ray photoelectron spectroscopy

    SciTech Connect

    Black, Leon; Garbev, Krassimir; Stemmermann, Peter; Hallam, Keith R.; Allen, Geoffrey C

    2003-06-01

    We have prepared a number of crystalline calcium-silicate-hydrate (C-S-H) phases hydrothermally, with calcium-silicon ratios varying from approximately 0.5 (K-phase) to 2.0 (hillebrandite and {alpha}-dicalcium silicate hydrate). The phases were then analysed using X-ray photoelectron spectroscopy (XPS). Increasing calcium-silicon ratios resulted in decreased silicon binding energies. Additionally, changes in the O 1s spectra could be explained in terms of bridging (BO) and nonbridging oxygen (NBO) moieties. Finally, the modified Auger parameter has proved particularly useful in determining the extent of silicate anion polymerisation. Of note also are the apparently unusual spectra for 11 A tobermorite. The silicon and oxygen photoelectron spectra indicate a phase with a lower degree of silicate polymerisation than predicted from its composition. The main contributing factor is the intrinsic disorder within the tobermorite structure. This study has shown how XPS may be used to obtain valuable structural information from C-S-H phases, and our analysis of the crystalline phases is the first step towards the analysis of real C-S-H-based cement systems.

  8. Effects of glass fiber modified with calcium silicate hydrate (C-S-H(I)) reinforced cement

    NASA Astrophysics Data System (ADS)

    Xin, M.; Zhang, L.; Ge, S.; Cheng, X.

    2017-03-01

    In this paper, calcium silicate hydrate (C-S-H(I)) and glass fiber modified with C-S-H(I) (SiF) at ambient temperature were synthesized. SiF and untreated fiber (OF) were incorporated into cement paste. Phase composition of C-S-H(I), SiF and OF was characterized by XRD. The surface morphologies were characterized by SEM. Flexural performance of fiber reinforced cement (FRC) at different curing ages was investigated. Results indicated that both SiF and OF could reinforce cement paste. SiF had a more positive effect on improving the flexural performance of FRC than OF. The strength of SiF reinforced cement was 11.48MPa after 28 days curing when fiber volume was 1.0%, 12.55% higher than that of OF reinforced cement. The flexural strength increased with the addition of fiber volume. However, the large dosage of fiber might cause a decrease in flexural strength of FRC.

  9. The selectionist meaning of C. S. Peirce and B. F. Skinner.

    PubMed

    Moxley, Roy A

    2002-01-01

    The selectionist meaning of C. S. Peirce and B. F. Skinner, which has an empirical existence, is advanced against essentialist meaning, which does not. Against a tradition that advocates essentialist meanings, the development of selectionist meaning is traced from Darwin through Peirce and on to Skinner. The views of Peirce and Skinner on meaning are presented as sharing a compatible conceptual foundation with contrasting but complementary distinctions. Support for selectionist meaning comes from contemporary dictionary construction, pragmatist philosophers, and recent views of scientific verbal behavior. Some implications are discussed.

  10. The selectionist meaning of C. S. Peirce and B. F. Skinner

    PubMed Central

    Moxley, Roy A.

    2002-01-01

    The selectionist meaning of C. S. Peirce and B. F. Skinner, which has an empirical existence, is advanced against essentialist meaning, which does not. Against a tradition that advocates essentialist meanings, the development of selectionist meaning is traced from Darwin through Peirce and on to Skinner. The views of Peirce and Skinner on meaning are presented as sharing a compatible conceptual foundation with contrasting but complementary distinctions. Support for selectionist meaning comes from contemporary dictionary construction, pragmatist philosophers, and recent views of scientific verbal behavior. Some implications are discussed. PMID:22477230

  11. Regio-selectivity of the Oxidative C-S Bond Formation in Ergothioneine and Ovothiol Biosyntheses

    PubMed Central

    Song, Heng; Leninger, Maureen; Lee, Norman

    2014-01-01

    Ergothioneine (5) and ovothiol (8) are two novel thiol-containing natural products. Their C-S bonds are formed by oxidative coupling reactions catalyzed by EgtB and OvoA enzymes, respectively. In this work, it was discovered that besides catalyzing the oxidative coupling between histidine and cysteine (1 → 6 conversion), OvoA can also catalyze a direct oxidative coupling between hercynine (2) and cysteine (2 → 4 conversion), which can shorten the ergothioneine biosynthetic pathway by two steps. PMID:24016264

  12. Regioselectivity of the oxidative C-S bond formation in ergothioneine and ovothiol biosyntheses.

    PubMed

    Song, Heng; Leninger, Maureen; Lee, Norman; Liu, Pinghua

    2013-09-20

    Ergothioneine (5) and ovothiol (8) are two novel thiol-containing natural products. Their C-S bonds are formed by oxidative coupling reactions catalyzed by EgtB and OvoA enzymes, respectively. In this work, it was discovered that in addition to catalyzing the oxidative coupling between histidine and cysteine (1 → 6 conversion), OvoA can also catalyze a direct oxidative coupling between hercynine (2) and cysteine (2 → 4 conversion), which can shorten the ergothioneine biosynthetic pathway by two steps.

  13. The embodiment of value: C.S. Sherrington and the cultivation of science.

    PubMed

    Smith, R

    2000-09-01

    The paper examines the ruputation of C.S. Sherrington as both eminent physiologist and eminent representative of scientific culture. It describes Sherrington's 'figurehead' status. In his career, research and personal manner, he embodied a life of science, not only in opposition to humanistic values but in fact appearing to be the highest achievement of those values. An analysis of Sherrington's research, of his lectures on Man on His Nature and of his poetry supports this account. The paper uses Sherrington's reputation to describe the values of an establishment group of English-speaking scientists and physicians in the 1930s and 1940s.

  14. [Symbol-based communication in non-human primates: a C. S. Peirce's semiotic analysis].

    PubMed

    Queiroz, João

    2003-12-01

    Are (or were) there any other symbolic species? This question has been addressed by researchers from many different fields and is responsible for a historical controversy on the existence of a threshold between "symbolic creatures" vs "simple forms of language creatures". According to the mainstream ethology and comparative psychology only the Homo sapiens is cognitively equiped to produce and interpret symbols. Here, I introduce an empirically testable model of symbolic semiosis ("symbolic action of sign") supported by C.S.Peirce logical-phenomenological theory of categories. I suggest that a specific sign-user pattern of behavior, observed in non-human primate communication, indicate a transition from indexical to symbolic semiosis.

  15. A remark on nano-particle stability of cement C-S-H gel

    NASA Astrophysics Data System (ADS)

    Ficker, Tomáš; Len, Adél; Martišek, Dalibor

    2011-04-01

    Hydrated pastes of ordinary Portland cement prepared with different water-to-cement ratios were investigated by using the small-angle neutron scattering technique in the region of Q ∈ (0.0045, 0.11) Å-1. Samples of cement pastes were subjected to non-standard hydration conditions using a mix with D2O, low RH, and water-to-cement ratios spread over a very wide interval (0.4; 1.4). The investigation was focused on testing the structural stability of nano-metric particles in the cement C-S-H gel. Owing to the high structural stability of these nano-particles, their average diameter might be used as a microscopic parameter characterizing the nano-metric structure of C-S-H gels. The average diameter of the nano-particles of the studied ordinary Portland cement CEMI 42.5 R-SC was found to be close to the value of 4.2 nm and independent of the water-to-cement ratios.

  16. Theory of pure short S--c--S and S--c--N microjunctions

    SciTech Connect

    Zaitsev, A.V.

    1980-01-01

    A theory is developed for the nonstationary Josephson effect in pure S--c--S junctions (mean free path l much larger than the constriction radius a), and the current-voltage characteristic (CVC) of such a junction is obtained. The model considered for the construction was an opening of small radius a<<(xi/sup -1/(0)+l/sup -1/)/sup -1/ in a thin impermeable partition (Kulik and Omel'yanchuk, Sov. J. Low Temp. Phys. 3, 459 (1977); Omel'yanchuk, Kulik, and Shekhter, JETP Lett. 25, 437 (1977)). A linear response from an S--c--S junction was obtained with a direct current smaller than the critical value, and the resistive regime was investigated in the voltage region V<<..delta.. near T/sub c/ and in the region V>>..delta.. at arbitrary temperatures. In the case of the S--c--N junction, the CVC was obtained for arbitrary V and T. The results differ not only quantitatively but also qualitatively from those obtained by Artemenko, Volkov, and Zaitsev (Soviet Phys. JETP 49, 924 (1979); Solid State Commun. 30, 771 (1979)) for dirty short constrictions.

  17. Characterization of C-S Lyase from C. diphtheriae: A Possible Target for New Antimicrobial Drugs

    PubMed Central

    2013-01-01

    The emergence of antibiotic resistance in microbial pathogens requires the identification of new antibacterial drugs. The biosynthesis of methionine is an attractive target because of its central importance in cellular metabolism. Moreover, most of the steps in methionine biosynthesis pathway are absent in mammals, lowering the probability of unwanted side effects. Herein, detailed biochemical characterization of one enzyme required for methionine biosynthesis, a pyridoxal-5′-phosphate (PLP-) dependent C-S lyase from Corynebacterium diphtheriae, a pathogenic bacterium that causes diphtheria, has been performed. We overexpressed the protein in E. coli and analyzed substrate specificity, pH dependence of steady state kinetic parameters, and ligand-induced spectral transitions of the protein. Structural comparison of the enzyme with cystalysin from Treponema denticola indicates a similarity in overall folding. We used site-directed mutagenesis to highlight the importance of active site residues Tyr55, Tyr114, and Arg351, analyzing the effects of amino acid replacement on catalytic properties of enzyme. Better understanding of the active site of C. diphtheriae C-S lyase and the determinants of substrate and reaction specificity from this work will facilitate the design of novel inhibitors as antibacterial therapeutics. PMID:24106714

  18. Gene localisation of X-linked hypohidrotic ectodermal dysplasia (C-S-T syndrome).

    PubMed

    MacDermot, K D; Winter, R M; Malcolm, S

    1986-10-01

    Genetic linkage studies were carried out in families with X-linked hypohidrotic ectodermal dysplasia (C-S-T syndrome). A DNA probe DXYS1 (pDP34), which maps both to the proximal part of the long arm of the X chromosome, Xq13-Xq21, and proximally on Yp, was used to detect a TaqI restriction fragment length polymorphism of the X-chromosomal locus in the DNA samples from 11 families. This locus was found to be closely linked to the X-linked hypohidrotic ectodermal dysplasia locus, with a lod score of 2.66 at recombination fraction (theta) of 0.06 (90% confidence limits 0.01-0.26). Only one crossover was observed in nineteen meioses. This indicates that the probe DXYS1 is closely linked to the X-linked hypohidrotic ectodermal dysplasia locus and is likely to facilitate carrier detection and prenatal diagnosis tests.

  19. Note on predictions for c s bar quarkonia using a three-loop static potential

    NASA Astrophysics Data System (ADS)

    Green, Noah; Repko, Wayne W.; Radford, Stanley F.

    2017-02-01

    We extend our treatment of the spectroscopy and decays of the charm-strange quarkonium system to include the effect of using the full three-loop QCD correction to the static short distance potential. As before, our potential model consists of the relativistic kinetic energy term, a scalar linear confining term including its relativistic corrections and the perturbative QCD spin-dependent terms. A set of unperturbed wave functions for the various states is obtained using a variational technique that is further constrained by requiring that the wave functions also satisfy the relativistic virial theorem. These are then used in a perturbative treatment of the potential to fit the mass spectrum of the c s bar system and calculate the radiative decay widths. Our results accurately describe the Ds spectrum and are compatible with the little data that is available for the radiative decays of the Ds states.

  20. Progress report for FACETS (Framework Application for Core-Edge Transport Simulations): C.S. SAP

    SciTech Connect

    Epperly, T W

    2008-10-01

    The mission of the Computer Science Scientific Application Partnership (C.S. SAP) at LLNL is to develop and apply leading-edge scientific component technology to FACETS software. Contributions from LLNL's fusion energy program staff towards the underlying physics modules are described in a separate report. FACETS uses component technology to combine selectively multiple physics and solver software modules written in different languages by different institutions together in an tightly-integrated, parallel computing framework for Tokamak reactor modeling. In the past fiscal year, the C.S. SAP has focused on two primary tasks: applying Babel to connect UEDGE into the FACETS framework through UEDGE's existing Python interface and developing a next generation componentization strategy for UEDGE which avoids the use of Python. The FACETS project uses Babel to solve its language interoperability challenges. Specific accomplishments for the year include: (1) Refined SIDL interfaces for UEDGE to meet satisfy the standard interfaces required by FACETS for all physics modules. This required consensus building between framework and UEDGE developers. (2) Wrote prototype C++ driver for UEDGE to demonstrate how UEDGE can be called from C++ using Babel. (3) Supported the FACETS project by adding new features to Babel such as release number tagging, porting to new machines, and adding new configuration options. Babel modifications were delivered to FACETS by testing and publishing development snapshots in the projects software repository. (4) Assisted Tech-X Corporation in testing and debugging of a high level build system for the complete FACETS tool chain--the complete list of third-party software libraries that FACETS depends on directly or indirectly (e.g., MPI, HDF5, PACT, etc.). (5) Designed and implemented a new approach to wrapping UEDGE as a FACETS component without requiring Python. To get simulation results as soon as possible, our initial connection from the FACETS

  1. KIF5C S176 Phosphorylation Regulates Microtubule Binding and Transport Efficiency in Mammalian Neurons

    PubMed Central

    Padzik, Artur; Deshpande, Prasannakumar; Hollos, Patrik; Franker, Mariella; Rannikko, Emmy H.; Cai, Dawen; Prus, Piotr; Mågård, Mats; Westerlund, Nina; Verhey, Kristen J.; James, Peter; Hoogenraad, Casper C.; Coffey, Eleanor T.

    2016-01-01

    Increased phosphorylation of the KIF5 anterograde motor is associated with impaired axonal transport and neurodegeneration, but paradoxically also with normal transport, though the details are not fully defined. JNK phosphorylates KIF5C on S176 in the motor domain; a site that we show is phosphorylated in brain. Microtubule pelleting assays demonstrate that phosphomimetic KIF5C(1-560)S176D associates weakly with microtubules compared to KIF5C(1-560)WT. Consistent with this, 50% of KIF5C(1-560)S176D shows diffuse movement in neurons. However, the remaining 50% remains microtubule bound and displays decreased pausing and increased bidirectional movement. The same directionality switching is observed with KIF5C(1-560)WT in the presence of an active JNK chimera, MKK7-JNK. Yet, in cargo trafficking assays where peroxisome cargo is bound, KIF5C(1-560)S176D-GFP-FRB transports normally to microtubule plus ends. We also find that JNK increases the ATP hydrolysis of KIF5C in vitro. These data suggest that phosphorylation of KIF5C-S176 primes the motor to either disengage entirely from microtubule tracks as previously observed in response to stress, or to display improved efficiency. The final outcome may depend on cargo load and motor ensembles. PMID:27013971

  2. Leaching of both calcium hydroxide and C-S-H from cement paste: Modeling the mechanical behavior

    SciTech Connect

    Carde, C.; Torrenti, J.M.; Francois, R.

    1996-08-01

    This paper deals with the effect of the leaching process of cement based materials on their mechanical properties. This process induces mainly a total leaching of Ca(OH){sub 2} and a progressive decalcification of C-S-H which leads to a gradient of C/S ratio in the leaching zone. In a previous work, the authors venture the hypothesis that the dissolution of calcium hydroxide was the essential parameter governing both decrease in strength and increase in porosity in the case of a paste sample made with an OPC cement which leads to a 20% content of calcium. In order to quantify the effect of the decrease of C/S ratio in C-S-H, the authors have performed experiments on paste samples with the admixture of silica fume to reduce the content of calcium hydroxide and thus emphasize the effect of C/S ratio decrease of the C-S-H. The leaching process was achieved by the use of a 50% concentrate solution of ammonium nitrate. Compression tests were conducted on micro-cylinder samples (10, 12, 14, 20 and 30 mm of diameter) because of the slow kinetics of degradation due to the leaching. The deterioration of the cement paste and the mortar exposed to the action of the ammonium nitrate was indicated by a peripheral zone of less resistance. The experimental results allow the modeling of the mechanical behavior of cement pastes in relation to the ratio of degraded area over total area of the sample A{sub d}/A{sub t}. The model thus defined allows separation of the effect of calcium hydroxide leaching and C-S-H leaching, and shows the importance of the first one. The current research program tries to characterize the deterioration of the mechanical properties of the concrete surrounding radioactive wastes, due to the water flow during storage.

  3. Uptake of Np(IV) by C-S-H phases and cement paste: an EXAFS study.

    PubMed

    Gaona, Xavier; Dähn, Rainer; Tits, Jan; Scheinost, Andreas C; Wieland, Erich

    2011-10-15

    Nuclear waste disposal concepts developed worldwide foresee the use of cementitious materials for the immobilization of long-lived intermediate level waste (ILW). This waste form may contain significant amounts of neptunium-237, which is expected to be present as Np(IV) under the reducing conditions encountered after the closure of the repository. Predicting the release of Np(IV) from the cementitious near field of an ILW repository requires a sufficiently detailed understanding of its interaction with the main sorbing components of hardened cement paste (HCP). In this study, the uptake of Np(IV) by calcium silicate hydrates (C-S-H) and HCP has been investigated using extended X-ray absorption fine structure (EXAFS) spectroscopy. The EXAFS studies on Np(IV)-doped C-S-H and HCP samples reveal that Np(IV) is predominantly incorporated in the structure of C-S-H phases having different Ca:Si ratios. The two main species identified correspond to Np(IV) in C-S-H with a Ca:Si mol ratio of 1.65 as in fresh cement and with a Ca:Si mol ratio of 0.75 as in highly degraded cement. The local structure of Np(IV) changes with the Ca:Si mol ratio and does not depend on pH. Furthermore, Np(IV) shows the same coordination environment in C-S-H and HCP samples. This study shows that C-S-H phases are responsible for the Np(IV) uptake by cementitious materials and further that incorporation in the interlayer of the C-S-H structure is the dominant uptake mechanism.

  4. High Performance C/S Composite Cathodes with Conventional Carbonate-Based Electrolytes in Li-S Battery

    PubMed Central

    Zheng, Shiyou; Han, Pan; Han, Zhuo; Zhang, Huijuan; Tang, Zhihong; Yang, Junhe

    2014-01-01

    High stable C/S composites are fabricated by a novel high-temperature sulfur infusion into micro-mesoporous carbon method following with solvent cleaning treatment. The C/S composite cathodes show high Coulombic efficiency, long cycling stability and good rate capability in the electrolyte of 1.0 M LiPF6 + EC/DEC (1:1 v/v), for instance, the reversible capacity of the treated C/S-50 (50% S) cathode retains around 860 mAh/g even after 500 cycles and the Coulombic efficiency is close to 100%, which demonstrates the best electrochemical performance of carbon-sulfur composite cathodes using the carbonate-based electrolyte reported to date. It is believed that the chemical bond of C-S is responsible for the superior electrochemical properties in Li-S battery, that is, the strong interaction between S and carbon matrix significantly improves the conductivity of S, effectively buffers the structural strain/stress caused by the large volume change during lithiation/delithiation, completely eliminates the formation of high-order polysulfide intermediates, and substantially avoids the shuttle reaction and the side reaction between polysulfide anions and carbonate solvent, and thus enables the C/S cathode to use conventional carbonate-based electrolytes and achieve outstanding electrochemical properties in Li-S battery. The results may substantially contribute to the progress of the Li-S battery technology. PMID:24776750

  5. Identification and molecular analysis of betaC-S lyase producing hydrogen sulfide in Streptococcus intermedius.

    PubMed

    Ito, Shuntaro; Nagamune, Hideaki; Tamura, Haruki; Yoshida, Yasuo

    2008-11-01

    Hydrogen sulfide (H(2)S) is a toxic gas that induces the modification and release of haemoglobin in erythrocytes; however, it also functions in methionine biosynthesis in bacteria. betaC-S lyase, encoded by the lcd gene, is responsible for bacterial H(2)S production through the cleavage of l-cysteine. In this study, 26 of 29 crude extracts from reference and clinical strains of Streptococcus intermedius produced H(2)S from l-cysteine. The capacities in those strains were not higher than those in strains of the other anginosus group of streptococci, Streptococcus anginosus and Streptococcus constellatus, but were much greater than those in strains of Streptococcus gordonii, which is known to have an extremely low capacity for H(2)S production. Incubation of the remaining three extracts with l-cysteine did not result in H(2)S production. Sequence analysis revealed that the lcd genes from these three strains (S. intermedius strains ATCC 27335, IMU151 and IMU202) contained mutations or small deletions. H(2)S production in crude extracts prepared from S. intermedius ATCC 27335 was restored by repairing the lcd gene sequence in genomic DNA. The kinetic properties of the purified recombinant protein encoded by the repaired lcd gene were comparable to those of native proteins produced by H(2)S-producing strains, whereas the truncated protein produced by S. intermedius ATCC 27335 had no enzymic activity with l-cysteine or l-cystathionine. However, real-time PCR analysis indicated that the lcd gene in strains ATCC 27335, IMU151 and IMU202 is transcribed and regulated in a manner similar to that in the H(2)S-producing strain.

  6. Ransom, Religion, and Red Giants: C.S. Lewis and Fred Hoyle

    NASA Astrophysics Data System (ADS)

    Larsen, Kristine

    2010-01-01

    Famed fantasy writer C.S. Lewis (1898-1963) was known to friends as a well-read astronomy aficionado. However, this medieval scholar and Christian apologist embraced a pre-Copernican universe (with its astrological overtones) in his Chronicles of Narnia series and defended the beauty and relevance of the geocentric model in his final academic work, "The Discarded Image". In the "Ransom Trilogy” ("Out of the Silent Planet", "Perelandra", and "That Hideous Strength") philologist Ransom (loosely based on Lewis's close friend J.R.R. Tolkien) travels to Lewis's visions of Mars and Venus, where he interacts with intelligent extraterrestrials, battles with evil scientists, and aids in the continuation of extraterrestrial Christian values. In the final book, Ransom is joined by a handful of colleagues in open warfare against the satanic N.I.C.E. (National Institute for Coordinated Experiments). Geneticist and evolutionary biologist J.B.S. Haldane criticized Lewis for his scientifically inaccurate descriptions of the planets, and his disdain for the scientific establishment. Lewis responded to the criticism in essays of his own. Another of Lewis's favorite scientific targets was atheist Fred Hoyle, whom he openly criticized for anti-Christian statements in Hoyle's BBC radio series. Writer and Lewis friend Dorothy L. Sayers voiced her own criticism of Hoyle. In a letter, Lewis dismissed Hoyle as "not a great philosopher (and none of my scientific colleagues think much of him as a scientist.” Given Lewis's lack of respect for Hoyle, and use of creative license in describing the planets, and the flat-earth, "geocentric” Narnia, it is surprising that Lewis very carefully includes an astronomically correct description of red giants in two novels in the Narnia series ("The Magician's Nephew" and "The Last Battle"). This inclusion is even more curious given that Fred Hoyle is well-known as one of the pioneers in the field of stellar death and the properties of red giants.

  7. C.R.O.C.S. A Swiss Industrialised School Building System. Programme on Educational Building 3.

    ERIC Educational Resources Information Center

    Lenssen, Paul

    The third in a series of leaflets designed for dissemination of information on school building, this publication describes the method of school building developed by the Centre de Rationalisation et d'Organisation des Constructions Scolaires (C.R.O.C.S.) in the Commune de Lausanne, Switzerland. In Lausanne, the concurrence of lengthening students'…

  8. Mechanistic studies of a novel C-S lyase in ergothioneine biosynthesis: the involvement of a sulfenic acid intermediate

    PubMed Central

    Song, Heng; Hu, Wen; Naowarojna, Nathchar; Her, Ampon Sae; Wang, Shu; Desai, Rushil; Qin, Li; Chen, Xiaoping; Liu, Pinghua

    2015-01-01

    Ergothioneine is a histidine thio-derivative isolated in 1909. In ergothioneine biosynthesis, the combination of a mononuclear non-heme iron enzyme catalyzed oxidative C-S bond formation reaction and a PLP-mediated C-S lyase (EgtE) reaction results in a net sulfur transfer from cysteine to histidine side-chain. This demonstrates a new sulfur transfer strategy in the biosynthesis of sulfur-containing natural products. Due to difficulties associated with the overexpression of Mycobacterium smegmatis EgtE protein, the proposed EgtE functionality remained to be verified biochemically. In this study, we have successfully overexpressed and purified M. smegmatis EgtE enzyme and evaluated its activities under different in vitro conditions: C-S lyase reaction using either thioether or sulfoxide as a substrate in the presence or absence of reductants. Results from our biochemical characterizations support the assignment of sulfoxide 4 as the native EgtE substrate and the involvement of a sulfenic acid intermediate in the ergothioneine C-S lyase reaction. PMID:26149121

  9. Lessons from D.C.'s Evaluation System: Teachers Give IMPACT Low Marks on Support and Professional Development

    ERIC Educational Resources Information Center

    Headden, Susan; Silva, Elena

    2011-01-01

    IMPACT, Washington, D.C.'s controversial evaluation system, sets clear expectations for instruction and holds teachers to well-defined standards of performance. Now into its third year, the program appears to be meeting its goals of rewarding effective teachers and eliminating educators it considers incompetent. And it has given the public reason…

  10. Enhancing Social Skills in the Classroom (E.C.S. to Grade 3). A Manual for Instructors.

    ERIC Educational Resources Information Center

    Alberta Dept. of Education, Edmonton. Education Response Centre.

    This manual on Early Childhood Services (E.C.S.) focuses on strategies for enhancing social skills in young children and describes 10 two-hour training sessions. The goals of the training are to help teachers understand and identify young children's social development difficulties; to offer guidelines for dealing with inappropriate behaviors; and…

  11. Final Evaluation Report for the C.S. 211 Bilingual Gifted and Talented Program 1978-1979.

    ERIC Educational Resources Information Center

    Brumberg, Stephan F.; Toledo, Victor

    This report provides a program description and evaluation findings of a bilingual program for gifted and talented children conducted at C.S. 211, an elementary school serving black and Hispanic children in an economically deprived area of the Bronx, New York. The program's goals, which included above grade level reading and mathematics performance…

  12. PONDEROSA-C/S: client-server based software package for automated protein 3D structure determination.

    PubMed

    Lee, Woonghee; Stark, Jaime L; Markley, John L

    2014-11-01

    Peak-picking Of Noe Data Enabled by Restriction Of Shift Assignments-Client Server (PONDEROSA-C/S) builds on the original PONDEROSA software (Lee et al. in Bioinformatics 27:1727-1728. doi: 10.1093/bioinformatics/btr200, 2011) and includes improved features for structure calculation and refinement. PONDEROSA-C/S consists of three programs: Ponderosa Server, Ponderosa Client, and Ponderosa Analyzer. PONDEROSA-C/S takes as input the protein sequence, a list of assigned chemical shifts, and nuclear Overhauser data sets ((13)C- and/or (15)N-NOESY). The output is a set of assigned NOEs and 3D structural models for the protein. Ponderosa Analyzer supports the visualization, validation, and refinement of the results from Ponderosa Server. These tools enable semi-automated NMR-based structure determination of proteins in a rapid and robust fashion. We present examples showing the use of PONDEROSA-C/S in solving structures of four proteins: two that enable comparison with the original PONDEROSA package, and two from the Critical Assessment of automated Structure Determination by NMR (Rosato et al. in Nat Methods 6:625-626. doi: 10.1038/nmeth0909-625 , 2009) competition. The software package can be downloaded freely in binary format from http://pine.nmrfam.wisc.edu/download_packages.html. Registered users of the National Magnetic Resonance Facility at Madison can submit jobs to the PONDEROSA-C/S server at http://ponderosa.nmrfam.wisc.edu, where instructions, tutorials, and instructions can be found. Structures are normally returned within 1-2 days.

  13. Structural characterization of C-S-H and C-A-S-H samples-Part I: Long-range order investigated by Rietveld analyses

    SciTech Connect

    Renaudin, Guillaume; Russias, Julie; Leroux, Fabrice; Frizon, Fabien; Cau-dit-Coumes, Celine

    2009-12-15

    Rietveld analyses on samples belonging to C-S-H and C-A-S-H series (0.8<=C/S<=1.7) were realized on X-ray powder patterns. The tobermorite M model was successfully used to refine all the powder patterns from C-S-H samples whatever the C/S value. This gives clear indication on the steady change in a unique structural description, corresponding to a 'tobermorite M defect' model, when passing from C-S-H(I) (C/S<1.0) to C-S-H(II) type (C/S>1.0). The possibility for both C-S-H types (from polymerized silicate chains to isolated silicate dimers) to accommodate the same structural model is explained by the continuous evolution of the occupancies of the cationic sites: the interlayer Ca atoms, the Si atoms from paired and bridging silicates. Accurate refinements of the structural and microstructural parameters evidenced the well crystallized feature of C-S-H phase combined with a small coherent domain size. Insertion of Al atoms in the C-S-H structure (C-A-S-H phase) involves a clear disruption into the layered atomic framework. The large increase of layer spacing observed when incorporating aluminum into C-S-H indicates that Al atoms should be located in the interlayer region of the structure in new crystallographic sites. Aluminum atoms are not substituted silicon crystallographic sites or interlayer calcium crystallographic sites. - Graphical abstract: The Tobermorite M model has been successfully used to perform Rietveld analyses on X-ray powder patterns from C-S-H samples. Refinement of the cationic site occupancies explains the evolution from the linear silicate chains to the isolated silicate dimers when increasing the C/S ratio.

  14. The C-S-H gel of Portland cement mortars: Part I. The interpretation of energy-dispersive X-ray microanalyses from scanning electron microscopy, with some observations on C-S-H, AFm and AFt phase compositions

    SciTech Connect

    Famy, C.; Brough, A.R.; Taylor, H.F.W

    2003-09-01

    Scanning electron microscopy (SEM) microanalyses of the calcium-silicate-hydrate (C-S-H) gel in Portland cement pastes rarely represent single phases. Essential experimental requirements are summarised and new procedures for interpreting the data are described. These include, notably, plots of Si/Ca against other atom ratios, 3D plots to allow three such ratios to be correlated and solution of linear simultaneous equations to test and quantify hypotheses regarding the phases contributing to individual microanalyses. Application of these methods to the C-S-H gel of a 1-day-old mortar identified a phase with Al/Ca=0.67 and S/Ca=0.33, which we consider to be a highly substituted ettringite of probable composition C{sub 6}A{sub 2}S-bar{sub 2}H{sub 34} or {l_brace}Ca{sub 6}[Al(OH){sub 6}]{sub 2}{center_dot}24H{sub 2}O{r_brace}(SO{sub 4}){sub 2}[Al(OH){sub 4}]{sub 2}. If this is true for Portland cements in general, it might explain observed discrepancies between observed and calculated aluminate concentrations in the pore solution. The C-S-H gel of a similar mortar aged 600 days contained unsubstituted ettringite and an AFm phase with S/Ca=0.125.

  15. Facile C-S, S-H, and S-S bond cleavage using a nickel(0) NHC complex.

    PubMed

    Schaub, Thomas; Backes, Marc; Plietzsch, Oliver; Radius, Udo

    2009-09-21

    [Ni2(iPr2Im)4(COD)] 1 (iPr2Im = 1,3-di(isopropyl)-imidazol-2-ylidene) reacts at room temperature with the thioethers methyl para-tolyl sulfide, ethyl phenyl sulfide, benzothiophene and dibenzothiophene to afford the C-S bond cleavage products [Ni(iPr2Im)2(4-CH3-C6H4)(SMe)] 2, [Ni(iPr2Im)2(C6H5)(SEt)] 3, [Ni(iPr2Im)2(1,8-benzothiophenylato)] 4 and [Ni(iPr2Im)2(C,S-dibenzothiophenylato)] 5. In contrast to the reaction of thioethers or sulfoxides (reported earlier), no C-S bond cleavage was observed for the reaction of 1 with the sulfones bezothiophene-1,1-dioxide and methyl phenyl sulfone. In those cases the stable compounds [Ni(iPr2Im)2(eta2-2,3-benzothiophene-1,1-dioxide)] 6 and [Ni(iPr2Im)2(eta2-MeSO2C6H5)] 7 with a eta2-coordinated sulfone ligand have been isolated. Compound 6 has been structurally characterized. S-H bond cleavage was observed using 2-methyl-2-propanthiol to afford [Ni(iPr2Im)2(H)(StBu)] 8. The reaction of 1 with disulfides led to the dithiolato complexes [Ni(iPr2Im)2(SR)2] (R = tBu 9, Me 10, Ph 11) by S-S bond scission.

  16. Hydrogen induced C-C, C-N, and C-S bond activation on Pt and Ni surfaces

    SciTech Connect

    Gland, J.L.

    1992-12-01

    The work has focussed on hydrogen induced bond activation in adsorbed organic molecules and intermediates containin C-S and C-N and C-C bonds on Ni(100), Ni(111), and Pt(111) surfaces. Fluorescence Yield Near Edge Spectroscopy (FYNES) above the carbon K edge was used for adsorbed organic reactants and in-situ kinetic studies of bond activation. Results indicate that the activation is enhanced on Ni relative to Pt. Methylthiolate and methylamine adsorbed on Pt(111) were studied.

  17. Hydrogen induced C-C, C-N, and C-S bond activation on Pt and Ni surfaces

    SciTech Connect

    Gland, J.L.

    1992-01-01

    The work has focussed on hydrogen induced bond activation in adsorbed organic molecules and intermediates containin C-S and C-N and C-C bonds on Ni(100), Ni(111), and Pt(111) surfaces. Fluorescence Yield Near Edge Spectroscopy (FYNES) above the carbon K edge was used for adsorbed organic reactants and in-situ kinetic studies of bond activation. Results indicate that the activation is enhanced on Ni relative to Pt. Methylthiolate and methylamine adsorbed on Pt(111) were studied.

  18. Comparative Photocatalytic Degradation of Monoazo and Diazo Dyes Under Simulated Visible Light Using Fe3+/C/S doped-TiO2 Nanoparticles.

    PubMed

    Anku, William Wilson; Oppong, Samuel Osei-Bonsu; Shukla, Sudheesh Kumar; Govender, Poomani Penny

    2016-01-01

    This research work delved into the photocatalytic degradation of monoazo dye (methyl orange) and diazo dye (congo red) in aqueous solution using Fe3+/C/S-doped TiO2 nanocomposites. The nanocomposites were synthesised through sol-gel method and characterized using XRD, FTIR, SEM, TEM, EDX, BET and UV-Vis. Photocatalytic degradation of the dyes was monitored under simulated visible light using pristine TiO2, C/S/doped-TiO2 and Fe3+/C/S doped-TiO2 with varying concentrations of Fe3+. The influence of catalyst doping, solution pH, and light intensity were also examined. Doping TiO2 with Fe3+/C/S caused reduction in its band gap value with the resultant improvement in its visible light activity. The photocatalytic efficiency of the catalysts is given as follows: TiO2 < C/S/TiO2 < Fe3+/C/S-TiO2 with Fe3+/C/S-TiO2 (0.3% Fe3+) as the best performing photocatalyst. The monoazo dye experienced higher degradation efficiency than the diazo dye. Degradation of the azo dyes was observed to decrease with increasing pH from 2 to 12. Increased visible light intensity enhanced the photodegradation efficiency of the dye. Dye decolourization was observed to be faster than its mineralization.

  19. Lithium Sulfur Primary Battery with Super High Energy Density: Based on the Cauliflower-like Structured C/S Cathode

    PubMed Central

    Ma, Yiwen; Zhang, Hongzhang; Wu, Baoshan; Wang, Meiri; Li, Xianfeng; Zhang, Huamin

    2015-01-01

    The lithium-sulfur primary batteries, as seldom reported in the previous literatures, were developed in this work. In order to maximize its practical energy density, a novel cauliflower-like hierarchical porous C/S cathode was designed, for facilitating the lithium-ions transport and sulfur accommodation. This kind of cathode could release about 1300 mAh g−1 (S) capacity at sulfur loading of 6 ~ 14 mg cm−2, and showed excellent shelf stability during a month test at room temperature. As a result, the assembled Li-S soft package battery achieved an energy density of 504 Wh kg−1 (654 Wh L−1), which was the highest value ever reported to the best of our knowledge. This work might arouse the interests on developing primary Li-S batteries, with great potential for practical application. PMID:26456914

  20. Lithium Sulfur Primary Battery with Super High Energy Density: Based on the Cauliflower-like Structured C/S Cathode

    NASA Astrophysics Data System (ADS)

    Ma, Yiwen; Zhang, Hongzhang; Wu, Baoshan; Wang, Meiri; Li, Xianfeng; Zhang, Huamin

    2015-10-01

    The lithium-sulfur primary batteries, as seldom reported in the previous literatures, were developed in this work. In order to maximize its practical energy density, a novel cauliflower-like hierarchical porous C/S cathode was designed, for facilitating the lithium-ions transport and sulfur accommodation. This kind of cathode could release about 1300 mAh g-1 (S) capacity at sulfur loading of 6 ~ 14 mg cm-2, and showed excellent shelf stability during a month test at room temperature. As a result, the assembled Li-S soft package battery achieved an energy density of 504 Wh kg-1 (654 Wh L-1), which was the highest value ever reported to the best of our knowledge. This work might arouse the interests on developing primary Li-S batteries, with great potential for practical application.

  1. Cement hydration from hours to centuries controlled by diffusion through barrier shells of C-S-H

    NASA Astrophysics Data System (ADS)

    Rahimi-Aghdam, Saeed; Bažant, Zdeněk P.; Abdolhosseini Qomi, M. J.

    2017-02-01

    Although a few good models for cement hydration exist, they have some limitations. Some do not take into account the complete range of variation of pore relative humidity and temperature, and apply over durations limited from up a few months to up to about a year. The ones that are applicable for long durations are either computationally too intensive for use in finite element programs or predict the hydration to terminate after few months. However, recent tests of autogenous shrinkage and swelling in water imply that the hydration may continue, at decaying rate, for decades, provided that a not too low relative pore humidity (above 0.7) persists for a long time, as expected for the cores of thick concrete structural members. Therefore, and because design lifetimes of over hundred years are required for large concrete structures, a new hydration model for a hundred year lifespan and beyond is developed. The new model considers that, after the first day of hydration, the remnants of anhydrous cement grains, gradually consumed by hydration, are enveloped by contiguous, gradually thickening, spherical barrier shells of calcium-silicate hydrate (C-S-H). The hydration progress is controlled by transport of water from capillary pores through the barrier shells toward the interface with anhydrous cement. The transport is driven by a difference of humidity, defined by equivalence with the difference in chemical potential of water. Although, during the period of 4-24 h, the C-S-H forms discontinuous nano-globules around the cement grain, an equivalent barrier shell control was formulated for this period, too, for ease and effectiveness of calculation. The entire model is calibrated and validated by published test data on the evolution of hydration degree for various cement types, particle size distributions, water-cement ratios and temperatures. Computationally, this model is sufficiently effective for calculating the evolution of hydration degree (or aging) at every

  2. Effect of addition of silica- and amine functionalized silica-nanoparticles on the microstructure of calcium silicate hydrate (C-S-H) gel.

    PubMed

    Monasterio, Manuel; Gaitero, Juan J; Erkizia, Edurne; Guerrero Bustos, Ana M; Miccio, Luis A; Dolado, Jorge S; Cerveny, Silvina

    2015-07-15

    In this work we study the influence of adding nano-silica (SiO2, Nyasil™) and aminopropyl (-(CH2)3-NH2,) functionalized silica nanoparticles (Stoga) during the synthesis of calcium-silicate-hydrate (C-S-H gel). Characterization by solid state (29)Si NMR and ATR-FTIR spectroscopy showed that the addition of both particle types increases the average length of the silicate chains in C-S-H gel being this effect slightly more important in the case of Stoga particles. In addition, (13)C NMR and XPS confirmed that the aminopropyl chain remains in the final product cleaved to silicon atoms at the end of the silicate chain of C-S-H gel whereas XRD measurements showed that this result in an increment in the basal distance compared with ordinary CSH. In addition, the dynamics of water within the pores of C-S-H gel was analyzed by broadband dielectric spectroscopy. We observed that water confined in C-S-H formed with the addition of nanoparticles is faster than that in plain C-S-H which can be related to a different porous structure in these materials.

  3. Synthesis and nano-mechanical characterization of calcium-silicate-hydrate (C-S-H) made with 1.5 CaO/SiO{sub 2} mixture

    SciTech Connect

    Foley, Emmy M.; Kim, Jung J.; Reda Taha, M.M.

    2012-09-15

    In this study, calcium silicate hydrate (C-S-H) is synthesized and characterized. C-S-H slurry was made with calcium oxide (CaO) to micro-silica (SiO{sub 2}) mixture ratio of 1.5 and enough deionized water. The slurry was continuously mixed for 7 days, then the excess water was removed. Two methods of drying were implemented: one method used the standard d-dry technique and the other was equilibrated to 11% relative humidity (RH). The dried powders were characterized using thermo gravimetric analysis (TGA), X-ray diffraction analysis (XRDA), and {sup 29}Si magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy. The stoichiometric formulas of synthetic C-S-H powders dried to d-dry and 11% RH in this study were approximated as C{sub 1.2}SH{sub 0.7} and C{sub 1.2}SH{sub 2.4} respectively. The powders were then compacted to create specimens with porosities similar to C-S-H in hydrated cement. The specimens underwent nanoindentation to mechanically characterize C-S-H. The experiments provide insight on the nanoscale mechanical characteristics of C-S-H.

  4. Characterization of C-S lyase from Lactobacillus delbrueckii subsp. bulgaricus ATCC BAA-365 and its potential role in food flavour applications.

    PubMed

    Allegrini, Alessandra; Astegno, Alessandra; La Verde, Valentina; Dominici, Paola

    2016-12-21

    Volatile thiols have substantial impact on the aroma of many beverages and foods. Thus, the control of their formation, which has been linked to C-S lyase enzymatic activities, is of great significance in industrial applications involving food flavours. Herein, we have carried out a spectroscopic and functional characterization of a putative pyridoxal 5'-phosphate (PLP)-dependent C-S lyase from the lactic acid bacterium Lactobacillus delbrueckii subsp. bulgaricus ATCC BAA-365 (LDB C-S lyase). Recombinant LDB C-S lyase exists as a tetramer in solution and shows spectral properties of enzymes containing PLP as cofactor. The enzyme has a broad substrate specificity toward sulphur-containing amino acids with aminoethyl-L-cysteine and L-cystine being the most effective substrates over L-cysteine and L-cystathionine. Notably, the protein also reveals cysteine-S-conjugate β-lyase activity in vitro, and is able to cleave a cysteinylated substrate precursor into the corresponding flavour-contributing thiol, with a catalytic efficiency higher than L-cystathionine. Contrary to similar enzymes of other lactic acid bacteria however, LDB C-S lyase is not capable of α,γ-elimination activity towards L-methionine to produce methanethiol, which is a significant compound in flavour development. Based on our results, future developments can be expected regarding the flavour-forming potential of Lactobacillus C-S lyase and its use in enhancing food flavours.

  5. Melting and phase relations in the Fe-C-S-O system at high pressure and temperature

    NASA Astrophysics Data System (ADS)

    Fei, Yingwei

    2010-05-01

    The physical state of the core (liquid outer core and solid inner core) could provide tight constraint on the core temperature if melting temperature of core materials is precisely determined at high pressure. On the other hand, the density of the Earth's core is significantly lower than that of pure iron measured experimentally at high pressure and temperature. The density deficit in the core (both liquid outer core and solid inner core) provides inside into the chemistry of the core, suggesting that the core must contain several weight percent of one or more light elements (lighter than iron) in addition to Fe-Ni alloy. Sulfur (S), carbon (C), and oxygen (O) are the prominent candidates among the proposed light elements, because of their high solar abundance and strong chemical affinity for Fe. Determining the effect of pressure on melting relations in the Fe-S, Fe-C, and Fe-O binary systems and multi-component system is crucial for understanding the chemistry, temperature, and evolution of planetary cores. There has been significant progress in determining the melting relations in the system Fe-FeS at high pressure, using multi-anvil apparatus and laser-heating diamond-anvil cell. These studies have revealed new iron-sulfur compounds (Fe3S2, Fe2S, and Fe3S) stable at high pressures, change of melting relations, and pressure effect on eutectic temperature and composition. The behaviors of the Fe-C and Fe-O systems have also been experimentally investigated recently. Experimental data in the Fe-C-S-O system at high pressure have just emerged. In parallel, there are high-quality data on density measurements of solid and liquid phases at high pressure and temperature. In this study, I present recent advances in experimental techniques and melting relations in the Fe-C-S-O system. The emphasis will be on the need to develop thermodynamic models by synthesis of thermochemical, thermophysical, and phase equilibrium data. The systematic approach provides a better

  6. Purification and Characterization of a C-S-Lyase from Ramson, the Wild Garlic,Allium ursinum.

    PubMed

    Landshuter, J; Lohmüller, E M; Knobloch, K

    1994-08-01

    A C-S-lyase preparation from ramson, ALLIUM URSINUM L., has been purified to apparent homogeneity. Separation techniques applied were hydrophobic interaction chromatography, anion exchange chromatography, and gel permeation chromatography. A 52-fold purification was obtained. The enzyme could be characterized by a molecular mass of M (r) = 150000 with subunits of 50 000. Its isoelectric point was determined to be at 4.7. The pH-optimum for the substrate-dependent turnover was found at 6.0. The temperature optimum was at 35 degrees C. (+)-Alliin as the substrate caused the highest enzymatic reaction velocity. The lowest K (m) value was observed with (+)- S-propyl- L-cysteine sulfoxide. Inhibitor constants were elaborated for the deoxy-derivatives of the substrates inserted and, likewise, for related amino acids. The protein was sensitive to low concentrations of hydroxylamine, indicating pyridoxal phosphate as a cofactor. Activation energies were determined for the cleavage of alliin, S-propyl- L-cysteine sulfoxide and S-methyl- L-cysteine sulfoxide, and were found to be in the range of 9 to 13 kJ . mol (-1).

  7. Metatranscriptomic evidence of pervasive and diverse chemolithoautotrophy relevant to C, S, N and Fe cycling in a shallow alluvial aquifer

    PubMed Central

    Jewell, Talia N M; Karaoz, Ulas; Brodie, Eoin L; Williams, Kenneth H; Beller, Harry R

    2016-01-01

    Groundwater ecosystems are conventionally thought to be fueled by surface-derived allochthonous organic matter and dominated by heterotrophic microbes living under often-oligotrophic conditions. However, in a 2-month study of nitrate amendment to a perennially suboxic aquifer in Rifle (CO), strain-resolved metatranscriptomic analysis revealed pervasive and diverse chemolithoautotrophic bacterial activity relevant to C, S, N and Fe cycling. Before nitrate injection, anaerobic ammonia-oxidizing (anammox) bacteria accounted for 16% of overall microbial community gene expression, whereas during the nitrate injection, two other groups of chemolithoautotrophic bacteria collectively accounted for 80% of the metatranscriptome: (1) members of the Fe(II)-oxidizing Gallionellaceae family and (2) strains of the S-oxidizing species, Sulfurimonas denitrificans. Notably, the proportion of the metatranscriptome accounted for by these three groups was considerably greater than the proportion of the metagenome coverage that they represented. Transcriptional analysis revealed some unexpected metabolic couplings, in particular, putative nitrate-dependent Fe(II) and S oxidation among nominally microaerophilic Gallionellaceae strains, including expression of periplasmic (NapAB) and membrane-bound (NarGHI) nitrate reductases. The three most active groups of chemolithoautotrophic bacteria in this study had overlapping metabolisms that allowed them to occupy different yet related metabolic niches throughout the study. Overall, these results highlight the important role that chemolithoautotrophy can have in aquifer biogeochemical cycling, a finding that has broad implications for understanding terrestrial carbon cycling and is supported by recent studies of geochemically diverse aquifers. PMID:26943628

  8. Bond ionicities in CuBC2 chalcogenides (B=Al, Ga, In; C=S, Se, Te)

    NASA Astrophysics Data System (ADS)

    Merino, J. M.; Díaz, R.; León, M.

    2000-04-01

    The bond ionicities, fi,Cu-C and fi,BC of several CuBC2 (B=Al, Ga, In, and C=S, Se, Te) chalcopyrite compounds are estimated by means of the Phillips-Van Vechten dielectric theory for binary tetrahedral compounds and Levine's extension to multibond crystals in the same way as Neumann [Crystal Res. Technol. 18, 1299 (1983)]. The influence of Cu 3d electrons has been taken into account considering Jaffe-Zunger [Phys. Rev. B 29, 1882 (1984)] band-structure calculations in chalcopyrite compounds, and performing a simple extrapolation for Te compounds. The Cu-C bond susceptibilities have been estimated from the static dielectric constant values obtained by Márquez and Rincón [Phys. Status Solidi B 191, 115 (1995)], and a set of Cu-C bond susceptibilities is proposed. The evaluated fi,Cu-C bond ionicities were found to increase with the atomic fractional coordinate of the C atom, x[anion], indicating that the anion position is a good estimation of the Cu-C bond ionicity.

  9. Coupled C-S-Fe geochemistry in a rapidly accumulating marine sedimentary system: Diagenetic and depositional implications

    NASA Astrophysics Data System (ADS)

    Peketi, A.; Mazumdar, A.; Joao, H. M.; Patil, D. J.; Usapkar, A.; Dewangan, P.

    2015-09-01

    In the present study, we have investigated the C-S-Fe systematics in a sediment core (MD161-13) from the Krishna-Godavari (K-G) basin, Bay of Bengal. The core covers the late Holocene period with high overall sedimentation rate of ˜573 cm kyr-1. Pore fluid chemical analyses indicate that the depth of the present sulfate methane transition zone (SMTZ) is at ˜6 mbsf. The (ΔTA + ΔCa + ΔMg)/ΔSO42- ratios suggest that both organoclastic degradation and anaerobic oxidation of methane (AOM) drive sulfate reduction at the study site. The positive correlation between total organic carbon content (TOC) and chromium reducible sulfur (CRS) content indicates marked influence of organoclastic sulfate reduction on sulfidization. Coupled occurrence of 34S-enriched iron sulfide (pyrite) with 12C-enriched authigenic carbonate zones is the possible records of paleo-sulfate methane transition zones where AOM-driven-focused sulfate reduction was likely fueled by sustained high methane flux from underlying gas-rich zone. Aluminum normalized poorly reactive iron (FePR/Al) and La/Yb ratios suggest increasing contribution from Deccan basalts relative to that of Archean-Proterozoic granitic complex in sediment flux of Krishna-Godavari basin during the last 4 kyr.

  10. Phosphorylated Pol II CTD recruits multiple HDACs, including Rpd3C(S), for methylation-dependent deacetylation of ORF nucleosomes

    PubMed Central

    Govind, Chhabi K.; Qiu, Hongfang; Ginsburg, Daniel S.; Ruan, Chun; Hofmeyer, Kimberly; Hu, Cuihua; Swaminathan, Venkatesh; Workman, Jerry L.; Li, Bing; Hinnebusch, Alan G.

    2010-01-01

    Methylation of histone H3 by Set1 and Set2 is required for deacetylation of nucleosomes in coding regions by histone deacetylase complexes (HDACs) Set3C and Rpd3C(S), respectively. We report that Set3C and Rpd3C(S) are co-transcriptionally recruited in the absence of Set1 and Set2, but in a manner stimulated by Pol II CTD kinase Cdk7/Kin28. Consistently, Rpd3C(S) and Set3C interact with Ser5-phosphorylated Pol II and histones in extracts, but only the histone interactions require H3 methylation. Moreover, reconstituted Rpd3C(S) binds specifically to Ser5-phosphorylated CTD peptides in vitro. Hence, whereas interaction with methylated H3 residues is required for Rpd3C(S) and Set3C deacetylation activities, their co-transcriptional recruitment is stimulated by the phosphorylated CTD. We further demonstrate that Rpd3, Hos2, and Hda1 have overlapping functions in deacetylating histones and suppressing co-transcriptional histone eviction. A strong correlation between increased acetylation and lower histone occupancy in HDA mutants implies that histone acetylation is a key determinant of nucleosome eviction. PMID:20670892

  11. Metatranscriptomic Evidence of Chemolithoautotrophy in the Rifle (CO) Subsurface Relevant to C, S, N, and Fe Cycling

    NASA Astrophysics Data System (ADS)

    Beller, H. R.; Jewell, T. N. M.; Karaoz, U.; Thomas, B. C.; Banfield, J. F.; Brodie, E.; Williams, K. H.

    2014-12-01

    Although there is a limited understanding of the chemolithoautotrophic activity of aquifer microorganisms, such subsurface microbial activity could greatly influence the cycling of elements such as C, S, N, and Fe. Here, we present transcriptional (RNA-Seq) evidence of the emergence of such chemolithoautotrophic activities in groundwater filter samples from a 2-month experiment in which up to 1.5 mM nitrate (a native electron acceptor) was injected into a perennially suboxic/anoxic aquifer (Rifle, CO) containing a large reservoir of reduced Fe- and S-containing compounds. Illumina sequence data from rRNA-subtracted cDNA libraries was assembled and mapped to phylogenetically binned Rifle metagenome data. Indicative of the activity of Fe(II)-oxidizing bacteria, many high-abundance transcripts mapped to the Gallionellaceae family, whose known members are chemolithoautotrophic bacteria that catalyze Fe(II) oxidation. For example, included among the most abundant transcripts were a cold-shock protein and an acyl carrier protein with 96-98% protein sequence identity to Gallionella capsiferriformans and a nitrite reductase (nirS) gene likely belonging to a Sideroxydans relative. The apparent activity of Gallionellaceae members is consistent with 16S rRNA iTag analyses of these samples, which indicated that Gallionella-related taxa accounted for up to ~50% of these communities. Evidence of sulfide oxidation also was apparent in these samples. For example, highly expressed subunits of APS reductase were very similar to those of the obligately chemolithoautotrophic S- and Fe(II)-oxidizing Thiobacillus denitrificans in terms of sequence identity (98-99%) and synteny of the mapped scaffold. Also highly expressed were a ß-Proteobacterial Form II RubisCO gene and a hydrazine oxidoreductase gene (93% identity to the planctomycete KSU-1), the latter strongly indicative of anaerobic ammonia oxidation (anammox) activity, which has seldom been reported in aquifer environments. Such

  12. Hydrodesulfurization on Transition Metal Catalysts: Elementary Steps of C-S Bond Activation and Consequences of Bifunctional Synergies

    NASA Astrophysics Data System (ADS)

    Yik, Edwin Shyn-Lo

    The presence of heteroatoms (e.g. S, N) in crude oil poses formidable challenges in petroleum refining processes as a result of their irreversible binding on catalytically active sites at industrially relevant conditions. With increasing pressures from legislation that continues to lower the permissible levels of sulfur content in fuels, hydrodesulfurization (HDS), the aptly named reaction for removing heteroatoms from organosulfur compounds, has become an essential feedstock pretreatment step to remove deleterious species from affecting downstream processing. Extensive research in the area has identified the paradigm catalysts for desulfurization; MoSx or WSx, promoted with Co or Ni metal; however, despite the vast library of both empirical and fundamental studies, a clear understanding of site requirements, the elementary steps of C-S hydrogenolysis, and the properties that govern HDS reactivity and selectivity have been elusive. While such a lack of rigorous assessments has not prevented technological advancements in the field of HDS catalysis, fundamental interpretations can inform rational catalyst and process design, particularly in light of new requirements for "deep" desulfurization and in the absence of significant hydrotreatment catalyst developments in recent decades. We report HDS rates of thiophene, which belongs to a class of compounds that are most resistant to sulfur removal (i.e. substituted alkyldibenzothiophenes), over a range of industrially relevant temperatures and pressures, measured at differential conditions and therefore revealing their true kinetic origins. These rates, normalized by the number of exposed metal atoms, on various SiO 2-supported, monometallic transition metals (Re, Ru, Pt), range several orders of magnitude. Under relevant HDS conditions, Pt and Ru catalysts form a layer of chemisorbed sulfur on surfaces of a metallic bulk, challenging reports that assume the latter exists as its pyrite sulfide phase during reaction. While

  13. Structural and nano-mechanical properties of Calcium Silicate Hydrate (C-S-H) formed from alite hydration in the presence of sodium and potassium hydroxide

    SciTech Connect

    Mendoza, Oscar; Giraldo, Carolina; Camargo, Sergio S.

    2015-08-15

    This research evaluates the effect of sodium and potassium hydroxide on the structure and nano-mechanical properties of Calcium Silicate Hydrate (C-S-H) formed from the hydration of pure alite. Monoclinic (MIII) alite was synthesized and hydrated, using water-to-alite ratios of 0.5 and 0.6 and additions of 10% NaOH and KOH by weight of alite. Based on results of X-ray diffraction, isothermal calorimetry, thermogravimetric analysis, Nuclear Magnetic Resonance and nanoindentation, two different effects of the alkaline hydroxides on the hydration reaction of alite, both at early and later ages, can be identified: (i) a differentiated hydration process, attributed to an enhancement in calcium hydroxide (CH) precipitation and a stimulation of the C-S-H nuclei; and (ii) an increase in the elastic modulus of the C-S-H aggregations, attributed to an electrostatic attraction between positive charges from the alkaline cations and negative charges from the C-S-H structure.

  14. An Evaluation of the Effect of D.C.'s Voucher Program on Public School Achievement and Racial Integration after One Year. Education Working Paper No. 10.

    ERIC Educational Resources Information Center

    Greene, Jay P.; Winters, Marcus A.

    2006-01-01

    This study evaluates the initial effect of Washington, D.C.'s Opportunity Scholarship Program (OSP) on the academic performance of public schools and its effects on the opportunities that District students have to attend integrated schools. The OSP is a federally sponsored school voucher program that provides vouchers worth up to $7,500 for an…

  15. A Comparison of Positive Outcome Expectancies: A Review of the Theories of M. F. Scheier, C. S. Carver, M. E. P. Seligman, and C. R. Snyder.

    ERIC Educational Resources Information Center

    Bird, William A.

    Research has shown that optimistic and pessimistic outcome expectancy evaluations are associated with adaptive and maladaptive levels of psychological functioning, physical wellness, and health recovery issues. The research of M. F. Scheier, C. S. Carver, M. E. P. Seligman, and C. R. Snyder supports the hypothesis that elevated optimism or…

  16. Copper-catalyzed double C-S bonds formation via different paths: synthesis of benzothiazoles from N-benzyl-2-iodoaniline and potassium sulfide.

    PubMed

    Zhang, Xiaoyun; Zeng, Weilan; Yang, Yuan; Huang, Hui; Liang, Yun

    2014-02-07

    A new, highly efficient procedure for the synthesis of benzothiazoles from easily available N-benzyl-2-iodoaniline and potassium sulfide has been developed. The results show copper-catalyzed double C-S bond formation via a traditional cross-coupling reaction and an oxidative cross-coupling reaction.

  17. Management of a Septic Open Abdomen Patient with Spontaneous Jejunal Perforation after Emergent C/S with Confounding Factor of Mild Acute Pancreatitis

    PubMed Central

    Yetisir, Fahri; Sarer, Akgün Ebru; Acar, Hasan Zafer; Osmanoglu, Gokhan; Özer, Mehmet; Yaylak, Faik

    2016-01-01

    Introduction. We report the management of a septic Open Abdomen (OA) patient by the help of negative pressure therapy (NPT) and abdominal reapproximation anchor (ABRA) system in pregnant woman with spontaneous jejunal perforation after emergent cesarean section (C/S) with confounding factor of mild acute pancreatitis (AP). Presentation of Case. A 29-year-old and 34-week pregnant woman with AP underwent C/S. She was arrested after anesthesia induction and responded to cardiopulmonary resuscitation (CPR). There were only ash-colored serosanguinous fluid within abdomen during C/S. After C/S, she was transferred to intensive care unit (ICU) with vasopressor support. On postoperative 1st day, she underwent reoperation due to fecal fluid coming near the drainage. Leakage point could not be identified exactly and operation had to be deliberately abbreviated due to hemodynamic instability. NPT was applied. Two days later source control was provided by conversion of enteroatmospheric fistula (EAF) to jejunostomy. ABRA was added and OA was closed. No hernia developed at 10-month follow-up period. Conclusion. NPT application in septic OA patient may gain time to patient until adequate source control could be achieved. Using ABRA in conjunction with NPT increases the fascial closure rate in infected OA patient. PMID:27006853

  18. The phylogeny of C/S1 bZIP transcription factors reveals a shared algal ancestry and the pre-angiosperm translational regulation of S1 transcripts

    PubMed Central

    Peviani, Alessia; Lastdrager, Jeroen; Hanson, Johannes; Snel, Berend

    2016-01-01

    Basic leucine zippers (bZIPs) form a large plant transcription factor family. C and S1 bZIP groups can heterodimerize, fulfilling crucial roles in seed development and stress response. S1 sequences also harbor a unique regulatory mechanism, termed Sucrose-Induced Repression of Translation (SIRT). The conservation of both C/S1 bZIP interactions and SIRT remains poorly characterized in non-model species, leaving their evolutionary origin uncertain and limiting crop research. In this work, we explored recently published plant sequencing data to establish a detailed phylogeny of C and S1 bZIPs, investigating their intertwined role in plant evolution, and the origin of SIRT. Our analyses clarified C and S1 bZIP orthology relationships in angiosperms, and identified S1 sequences in gymnosperms. We experimentally showed that the gymnosperm orthologs are regulated by SIRT, tracing back the origin of this unique regulatory mechanism to the ancestor of seed plants. Additionally, we discovered an earlier S ortholog in the charophyte algae Klebsormidium flaccidum, together with a C ortholog. This suggests that C and S groups originated by duplication from a single algal proto-C/S ancestor. Based on our observations, we propose a model wherein the C/S1 bZIP dimer network evolved in seed plants from pre-existing C/S bZIP interactions. PMID:27457880

  19. An investigation of the structure and phase relations of C-S-H gels. Final report, August 15, 1991--September 14, 1997

    SciTech Connect

    Grutzeck, M.W.; Benesi, A.

    1997-12-14

    Solid state NMR was used to obtain data on the atomic level structure of calcium silicate hydrate (C-S-H) that formed from a variety of starting materials under a variety of conditions. Because C-S-H is the major component of hydrated portland cement, a knowledge of its structure and of its structural evolution will ultimately allow users of cement containing materials such as mortars and concrete to more accurately predict the physical and mechanical behavior of these materials once they are placed into service. From the outset, the goal of the work was to observe the hydration process on the atomic level, integrate the findings with existing data in the literature, and refine hydration models as necessary to accommodate the newly acquired data.

  20. Copper-catalyzed aerobic oxidation and cleavage/formation of C-S bond: a novel synthesis of aryl methyl sulfones from aryl halides and DMSO.

    PubMed

    Yuan, Gaoqing; Zheng, Junhua; Gao, Xiaofang; Li, Xianwei; Huang, Liangbin; Chen, Huoji; Jiang, Huanfeng

    2012-08-04

    With atmospheric oxygen as the oxidant, a novel copper(I)-catalyzed synthesis of aryl methyl sulfones from aryl halides and widely available DMSO is described. The procedure tolerates aryl halides with various functional groups (such as methoxy, acetyl, chloro, fluoro and nitro groups), which could afford aryl methyl sulfones in moderate to high yields. The copper-catalyzed aerobic oxidation and the cleavage/formation of C-S bond are the key steps for this transformation.

  1. A novel C-S lyase from the latex-producing plant Taraxacum brevicorniculatum displays alanine aminotransferase and l-cystine lyase activity.

    PubMed

    Munt, Oliver; Prüfer, Dirk; Schulze Gronover, Christian

    2013-01-01

    We isolated a novel pyridoxal-5-phosphate-dependent l-cystine lyase from the dandelion Taraxacum brevicorniculatum. Real time qPCR analysis showed that C-S lyase from Taraxacum brevicorniculatum (TbCSL) mRNA is expressed in all plant tissues, although at relatively low levels in the latex and pedicel. The 1251 bp TbCSL cDNA encodes a protein with a calculated molecular mass of 46,127 kDa. It is homologous to tyrosine and alanine aminotransferases (AlaATs) as well as to an Arabidopsis thaliana carbon-sulfur lyase (C-S lyase) (SUR1), which has a role in glucosinolate metabolism. TbCSL displayed in vitrol-cystine lyase and AlaAT activities of 4 and 19nkatmg(-1) protein, respectively. However, we detected no in vitro tyrosine aminotransferase (TyrAT) activity and RNAi knockdown of the enzyme had no effect on phenotype, showing that TbCSL substrates might be channeled into redundant pathways. TbCSL is in vivo localized in the cytosol and functions as a C-S lyase or an aminotransferase in planta, but the purified enzyme converts at least two substrates specifically, and can thus be utilized for further in vitro applications.

  2. Unprecedented chemical reactivity of a paramagnetic endohedral metallofullerene La@C(s)-C82 that leads hydrogen addition in the 1,3-dipolar cycloaddition reaction.

    PubMed

    Takano, Yuta; Slanina, Zdenek; Mateos, Jaime; Tsuchiya, Takayoshi; Kurihara, Hiroki; Uhlik, Filip; Herranz, María Ángeles; Martín, Nazario; Nagase, Shigeru; Akasaka, Takeshi

    2014-12-17

    Synthesizing unprecedented diamagnetic adducts of an endohedral metallofullerene was achieved by using 1,3-dipolar cycloaddition reaction of paramagnetic La@C(s)-C82 with a simultaneous hydrogen addition. The selective formation of two main products, La@C(s)-C82HCMe2NMeCHPh (2a and 2b), was first detected by HPLC analysis and MALDI-TOF mass spectrometry. 2a and 2b-O, which was readily formed by the oxidation of 2b, were isolated by multistep HPLC separation and were fully characterized by spectroscopic methods, including 1D and 2D-NMR, UV-vis-NIR measurements and electrochemistry. The hydrogen atom was found to be connected to the fullerene cage directly in the case of 2a, and the redox behavior indicated that the C-H bond can still be readily oxidized. The reaction mechanism and the molecular structures of 2a and 2b were reasonably proposed by the interplay between experimental observations and DFT calculations. The feasible order of the reaction process would involve a 1,3-dipolar cycloaddition followed by the hydrogen addition through a radical pathway. It is concluded that the characteristic electronic properties and molecular structure of La@C(s)-C82 resulted in a site-selective reaction, which afforded a unique chemical derivative of an endohedral metallofullerene in high yields. Derivative 2a constitutes the first endohedral metallofullerene where the direct linking of a hydrogen atom has been structurally proven.

  3. Renal cysteine conjugate C-S lyase mediated toxicity of halogenated alkenes in primary cultures of human and rat proximal tubular cells.

    PubMed

    McGoldrick, Trevor A; Lock, Edward A; Rodilla, Vicente; Hawksworth, Gabrielle M

    2003-07-01

    Proximal tubular cells from human (HPT) and rat (RPT) kidneys were isolated, grown to confluence and incubated with S-(1,2-dichlorovinyl)- l-cysteine (DCVC), S-(1,2,2-trichlorovinyl)- l-cysteine (TCVC), S-(1,1,2,2-tetrafluoroethyl)- l-cysteine (TFEC) and S-(2-chloro-1,1-difluorethyl)- l-cysteine (CDFEC), the cysteine conjugates of nephrotoxicants. The cultures were exposed to the conjugates for 12, 24 and 48 h and the toxicity determined using the MTT assay. All four conjugates caused dose-dependent toxicity to RPT cells over the range 50-1,000 microM, the order of toxicity being DCVC>TCVC>TFEC=CDFEC. The inclusion of aminooxyacetic acid (AOAA; 250 microM), an inhibitor of pyridoxal phosphate-dependent enzymes such as C-S lyase, afforded protection, indicating that C-S lyase has a role in the bioactivation of these conjugates. In HPT cultures only DCVC caused significant time- and dose-dependent toxicity. Exposure to DCVC (500 microM) for 48 h decreased cell viability to 7% of control cell values, whereas co-incubation of DCVC (500 microM) with AOAA (250 microM) resulted in cell viability of 71%. Human cultures were also exposed to S-(1,2-dichlorovinyl)-glutathione (DCVG). DCVG was toxic to HPT cells, but the onset of toxicity was delayed compared with the corresponding cysteine conjugate. AOAA afforded almost complete protection from DCVG toxicity. Acivicin (250 microM), an inhibitor of gamma-glutamyl transferase (gamma-GT), partially protected against DCVG (500 microM)-induced toxicity at 48 h (5% viability and 53% viability in the absence and presence of acivicin, respectively). These results suggest that DCVG requires processing by gamma-GT prior to bioactivation by C-S lyase in HPT cells. The activity of C-S lyase, using TFEC as a substrate, and glutamine transaminase K (GTK) was measured in rat and human cells with time in culture. C-S lyase activity in RPT and HPT cells decreased to approximately 30% of fresh cell values by the time the cells reached

  4. Effect of Material Ion Exchanges on the Mechanical Stiffness Properties and Shear Deformation of Hydrated Cement Material Chemistry Structure C-S-H Jennite -- A Computational Modeling Study

    NASA Astrophysics Data System (ADS)

    Adebiyi, Babatunde Mattew

    Material properties and performance are governed by material molecular chemistry structures and molecular level interactions. Methods to understand relationships between the material properties and performance and their correlation to the molecular level chemistry and morphology, and thus find ways of manipulating and adjusting matters at the atomistic level in order to improve material performance, are required. A computational material modeling methodology is investigated and demonstrated for a key cement hydrated component material chemistry structure of Calcium-Silicate-Hydrate (C-S-H) Jennite in this work. The effect of material ion exchanges on the mechanical stiffness properties and shear deformation behavior of hydrated cement material chemistry structure of Calcium Silicate Hydrate (C-S-H) Jennite was studied. Calcium ions were replaced with Magnesium ions in Jennite structure of the C-S-H gel. Different level of substitution of the ions was used. The traditional Jennite structure was obtained from the American Mineralogist Crystal Structure Database and super cells of the structures were created using a Molecular Dynamics Analyzer and Visualizer Material Studio. Molecular dynamics parameters used in the modeling analysis were determined by carrying out initial dynamic studies. 64 unit cell of C-S-H Jennite was used in material modeling analysis studies based on convergence results obtained from the elastic modulus and total energies. NVT forcite dynamics using COMPASS force field based on 200 ps dynamics time was used to determine mechanical modulus of the traditional C-S-H gel and the Magnesium ion modified structures. NVT Discover dynamics using COMPASS forcefield was used in the material modeling studies to investigate the influence of ionic exchange on the shear deformation of the associated material chemistry structures. A prior established quasi-static deformation method to emulate shear deformation of C-S-H material chemistry structure that is

  5. Organometallic Modeling of the Hydrodesulfurization (HDS) Process: Rhenium Carbonyl-promoted C-S Bond Cleavage and Hydrogenation of Thiophenes and Benozothiophenes

    SciTech Connect

    Reynolds, Michael A.

    2000-09-21

    Organometallic modeling of the HDS process at single or multiple metal centers is one approach to better understanding the mechanism that govern commercial HDS. Therefore, we have currently been investigating the use of Re2(CO)10 as a potential model system for catalytic HDS with respect to S-binding, ring-opening, and hydrogenation of thiophenes andbenzothiophenes. We have also been investigating the use of UV-light as a method for activating thiophenic molecules towards C-S and C-H bond cleavage.

  6. Effects of carbon-to-sulfur (C/S) ratio and nitrate (N) dosage on Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorus Removal (DS-EBPR).

    PubMed

    Yu, Mei; Lu, Hui; Wu, Di; Zhao, Qing; Meng, Fangang; Wang, Yudan; Hao, Xiaodi; Chen, Guang-Hao

    2016-03-17

    In this study, the Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorous Removal (DS-EBPR) with 20 mg P/L/d of the volumetric P removal rate was successfully achieved in a Sequencing Batch Reactor (SBR). The effects of carbon-to-sulfur (C/S) mass ratio and nitrate (N) dosage were investigated through two batch tests to reveal the role of wastewater compositions in DS-EBPR performance. The optimal specific P release and uptake rates (0.4 and 2.4 mg P/g VSS/h, respectively) were achieved at C/S/P/N mass ratio of 150/200/20/20, and poly-S is supplied as a potential electron and energy storage. The nitrate dosage in a range of 10-50 mg N/L had no significant influence on P uptake rates (2.1 ~ 2.4 mg P/g VSS/h), but significantly affected the storage of inclusion poly-S, the poly-S oxidation rate was increased about 16% while dosing nitrate from 20 to 30 mg N/L. It implies that nitrate is denitrified in the P uptake phase, and excess nitrate is further consumed by poly-S. Moreover, the microbial analysis showed that the functional bacteria should mostly belong to denitrifying bacteria or Unclassified genera.

  7. Early Permian extensional shearing of an Ordovician granite: The Saint-Eutrope "C/S-like" orthogneiss (Montagne Noire, French Massif Central)

    NASA Astrophysics Data System (ADS)

    Pitra, Pavel; Poujol, Marc; Van Den Driessche, Jean; Poilvet, Jean-Charles; Paquette, Jean-Louis

    2012-08-01

    Dating the magmatic events in the Montagne Noire gneiss dome is a key point to arbitrate between the different interpretations of the Late Carboniferous-Early Permian tectonics in this southern part of the Variscan belt. The Saint-Eutrope orthogneiss crops out along the northern flank of the dome. We show that the protolith of this orthogneiss is an Ordovician granite dated at 455 ± 2 Ma (LA-ICP-MS U-Pb dating on zircon). This age is identical to that previously obtained on the augen orthogneiss of the southern flank, strongly suggesting that both orthogneiss occurrences have the same Ordovician protolith. The Saint-Eutrope orthogneiss experienced intense shearing along the Espinouse extensional detachment at ca. 295 Ma (LA-ICP-MS U-Pb-Th on monazite), an age close to that determined previously on mica by the 39Ar-40Ar method and contemporaneous with the emplacement age of the syntectonic Montalet granite farther to the west. This normal sense shearing reworked previous fabrics related to Variscan thrusting that can be still observed in the augen orthogneiss of the southern flank, and is responsible for the spectacular "C/S-like" pattern of the Saint-Eutrope orthogneiss. This work also shows that care is needed when dealing with C/S-type structures, since they can develop not only in syntectonic intrusions, but also in orthogneisses affected by an intense secondary deformation, at decreasing temperature.

  8. Effects of carbon-to-sulfur (C/S) ratio and nitrate (N) dosage on Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorus Removal (DS-EBPR)

    PubMed Central

    Yu, Mei; Lu, Hui; Wu, Di; Zhao, Qing; Meng, Fangang; Wang, Yudan; Hao, Xiaodi; Chen, Guang-Hao

    2016-01-01

    In this study, the Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorous Removal (DS-EBPR) with 20 mg P/L/d of the volumetric P removal rate was successfully achieved in a Sequencing Batch Reactor (SBR). The effects of carbon-to-sulfur (C/S) mass ratio and nitrate (N) dosage were investigated through two batch tests to reveal the role of wastewater compositions in DS-EBPR performance. The optimal specific P release and uptake rates (0.4 and 2.4 mg P/g VSS/h, respectively) were achieved at C/S/P/N mass ratio of 150/200/20/20, and poly-S is supplied as a potential electron and energy storage. The nitrate dosage in a range of 10–50 mg N/L had no significant influence on P uptake rates (2.1 ~ 2.4 mg P/g VSS/h), but significantly affected the storage of inclusion poly-S, the poly-S oxidation rate was increased about 16% while dosing nitrate from 20 to 30 mg N/L. It implies that nitrate is denitrified in the P uptake phase, and excess nitrate is further consumed by poly-S. Moreover, the microbial analysis showed that the functional bacteria should mostly belong to denitrifying bacteria or Unclassified genera. PMID:26983801

  9. Effects of carbon-to-sulfur (C/S) ratio and nitrate (N) dosage on Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorus Removal (DS-EBPR)

    NASA Astrophysics Data System (ADS)

    Yu, Mei; Lu, Hui; Wu, Di; Zhao, Qing; Meng, Fangang; Wang, Yudan; Hao, Xiaodi; Chen, Guang-Hao

    2016-03-01

    In this study, the Denitrifying Sulfur cycle-associated Enhanced Biological Phosphorous Removal (DS-EBPR) with 20 mg P/L/d of the volumetric P removal rate was successfully achieved in a Sequencing Batch Reactor (SBR). The effects of carbon-to-sulfur (C/S) mass ratio and nitrate (N) dosage were investigated through two batch tests to reveal the role of wastewater compositions in DS-EBPR performance. The optimal specific P release and uptake rates (0.4 and 2.4 mg P/g VSS/h, respectively) were achieved at C/S/P/N mass ratio of 150/200/20/20, and poly-S is supplied as a potential electron and energy storage. The nitrate dosage in a range of 10–50 mg N/L had no significant influence on P uptake rates (2.1 ~ 2.4 mg P/g VSS/h), but significantly affected the storage of inclusion poly-S, the poly-S oxidation rate was increased about 16% while dosing nitrate from 20 to 30 mg N/L. It implies that nitrate is denitrified in the P uptake phase, and excess nitrate is further consumed by poly-S. Moreover, the microbial analysis showed that the functional bacteria should mostly belong to denitrifying bacteria or Unclassified genera.

  10. Oxidative Cleavage of C=S and P=S Bonds at an Al(I) Center: Preparation of Terminally Bound Aluminum Sulfides.

    PubMed

    Chu, Terry; Vyboishchikov, Sergei F; Gabidullin, Bulat; Nikonov, Georgii I

    2016-10-10

    The treatment of cyclic thioureas with the aluminum(I) compound NacNacAl (1; NacNac=[ArNC(Me)CHC(Me)NAr](-) , Ar=2,6-Pr(i)2 C6 H3 ) resulted in oxidative cleavage of the C=S bond and the formation of 3 and 5, the first monomeric aluminum complexes with an Al=S double bond stabilized by N-heterocyclic carbenes. Compound 1 also reacted with triphenylphosphine sulfide in a similar manner, which resulted in cleavage of the P=S bond and production of the adduct [NacNacAl=S(S=PPh3 )] (8). The Al=S double bond in 3 can react with phenyl isothiocyanate to furnish the cycloaddition product 9 and zwitterion 10 as a result of coupling between the liberated carbene and PhN=C=S. All novel complexes were characterized by multinuclear NMR spectroscopy, and the structures of 5, 9, and 10 were confirmed by X-ray diffraction analysis. The nature of the Al=S bond in 5 was also probed by DFT calculations.

  11. D.C.'s Braveheart

    ERIC Educational Resources Information Center

    Kronholz, June

    2010-01-01

    This article discusses Michelle Rhee's style of leadership--as steely as the sound of her peekaboo high heels on a linoleum-tile hallway--which has angered much of Washington, D.C., and baffled the rest since she arrived as schools chancellor in June 2007. But it is also helping her gain control of a school system that has defied management for…

  12. The study of disorder and nanocrystallinity in C-S-H, supplementary cementitious materials and geopolymers using pair distribution function analysis

    SciTech Connect

    Meral, Cagla; Benmore, C.J.; Monteiro, Paulo J.M.

    2011-07-15

    Significant progress was achieved with the application of Rietveld method to characterize the crystalline phases in portland cement paste. However, to obtain detailed information on the amorphous or poorly crystalline phases, it is necessary to analyze the total scattering data. The pair distribution function (PDF) method has been successfully used in the study of liquids and amorphous solids. The method takes the Sine Fourier transform of the measured structure factor over a wide momentum transfer range, providing a direct measure of the probability of finding an atom surrounding a central atom at a radial distance away. The obtained experimental characteristic distances can be also used to validate the predictions by the theoretical models, such as, molecular dynamics, ab initio simulations and density functional theory. The paper summarizes recent results of PDF analysis on silica fume, rice husk ash, fly ash, ASR gel, C-S-H and geopolymers.

  13. Volatile compounds of sulfur in the Fe-C-S system at 5.3 GPa and 1300°C

    NASA Astrophysics Data System (ADS)

    Zhimulev, E. I.; Sonin, V. M.; Bul'bak, T. A.; Chepurov, A. I.; Tomilenko, A. A.; Pokhilenko, N. P.

    2015-05-01

    This report presents the results of experimental studies of the fluid phase in the Fe-C-S system at high P and T values (5.3 GPa and 1300°C) conforming to diamond synthesis. The samples for experiments were mounted on air; therefore, the volatile compounds detected after the experiments are characterized by a wide variety and complicated composition involving both inorganic and organic components. Among the inorganic compounds, CO2, H2O, N2, SO2, CS2, and COS were detected. The GC/MS analysis revealed hydrocarbons (paraffins, olefins, and arenes), including high-molecular compounds. The formation of heavy hydrocarbons confirms their thermodynamic stability under high pressure. Oxygenated hydrocarbons (alcohols, aldehydes, ketones, carboxylic acids, and ethers) were also detected.

  14. Combined effect of magnesia and zirconia on the bioactivity of calcium silicate ceramics at C\\S ratio less than unity.

    PubMed

    Ewais, Emad M M; Amin, Amira M M; Ahmed, Yasser M Z; Ashor, Eman A; Hess, Ulrike; Rezwan, Kurosch

    2017-01-01

    This paper describes the effect of magnesia in the presence of zirconia on the bioactivity, microstructure and physico-mechanical properties of calcium silicate composition adjusted at calcia/silica ratio(C/S) of 0.5. A mixture from calcium carbonate and silica was conducted at C/S of 0.5. 20wt.% of magnesia and 5-25wt.% of ZrO2 were added. Each mixture was mixed with ethanol in a planetary ball mill, dried, formed and fired at a temperature of 1325±5°C. Phase composition, FE-SEM, and physico-mechanical properties of the fired specimens were determined and explained. The in vitro bioactivities of these specimens were investigated by analysis of their abilities to form apatite in the simulated body fluid (SBF) for a short time (7days) using SEM-EDS. The findings indicated that the surface of the specimens containing 5 and 15wt.% ZrO2 were completely covered by single and multilayered hydroxyapatite (HA) precipitate typical to "cauliflower" morphology, respectively. The surface of the specimen containing 25wt.% ZrO2 did not cover, but there are some scattered HA precipitate. The differences among the results were rationalized based on the phase composition. Vickers hardness and fracture toughness of the specimens of highly promised bioactivity were 2.32-2.57GPa and 1.80-1.50MPa. m(1/2), respectively. The properties of these specimens are similar to the properties of human cortical bone. Consequently, these composites might be used as bone implant materials.

  15. Role of active-site residues Tyr55 and Tyr114 in catalysis and substrate specificity of Corynebacterium diphtheriae C-S lyase.

    PubMed

    Astegno, Alessandra; Allegrini, Alessandra; Piccoli, Stefano; Giorgetti, Alejandro; Dominici, Paola

    2015-01-01

    In recent years, there has been increased interest in bacterial methionine biosynthesis enzymes as antimicrobial targets because of their pivotal role in cell metabolism. C-S lyase from Corynebacterium diphtheriae is a pyridoxal 5'-phosphate-dependent enzyme in the transsulfuration pathway that catalyzes the α,β-elimination of sulfur-containing amino acids, such as L-cystathionine, to generate ammonia, pyruvate, and homocysteine, the immediate precursor of L-methionine. In order to gain deeper insight into the functional and dynamic properties of the enzyme, mutants of two highly conserved active-site residues, Y55F and Y114F, were characterized by UV-visible absorbance, fluorescence, and CD spectroscopy in the absence and presence of substrates and substrate analogs, as well as by steady-state kinetic studies. Substitution of Tyr55 with Phe apparently causes a 130-fold decrease in K(d)(PLP) at pH 8.5 providing evidence that Tyr55 plays a role in cofactor binding. Moreover, spectral data show that the mutant accumulates the external aldimine intermediate suggesting that the absence of interaction between the hydroxyl moiety and PLP-binding residue Lys222 causes a decrease in the rate of substrate deprotonation. Mutation of Tyr114 with Phe slightly influences hydrolysis of L-cystathionine, and causes a change in substrate specificity towards L-serine and O-acetyl-L-serine compared to the wild type enzyme. These findings, together with computational data, provide useful insights in the substrate specificity of C-S lyase, which seems to be regulated by active-site architecture and by the specific conformation in which substrates are bound, and will aid in development of inhibitors.

  16. Geochemical constraints on the stability of zeolites and C-S-H in the high pH reaction of bentonite

    NASA Astrophysics Data System (ADS)

    Fernández, Raúl; Rodríguez, Manuel; Villa, Raquel Vigil de la; Cuevas, Jaime

    2010-02-01

    Cement-bentonite interactions will occur in deep geological repositories for high level radioactive waste. We performed laboratory experiments in order to constrain some previous geochemical and mineralogical uncertainties in the formation of secondary minerals in the high pH reaction of FEBEX bentonite at moderate temperatures. The reactivity of a Mg-homoionic FEBEX bentonite was studied at 25, 60 and 90 °C in batch reactors using two solutions representative of short and long time evolution stages of cement degradation. These solutions were periodically renewed in order to maintain a constant pH regime for a period of almost 2 years. Chabazite and merlinoite were observed to be the main zeolites that formed at 60 °C, while merlinoite was the dominant zeolite formed at 90 °C with the hyperalkaline (K-Na-OH) solution. The alkaline experiments (Ca-OH solution) showed minor reactivity and negligible mineralogical alteration, but the overall results suggest that the reaction tends to equilibrium conditions between C-S-H and montmorillonite at high temperature and metastable conditions at low temperature. The montmorillonite dissolution rates were calculated for all experiments, showing good agreement with previous calculations.

  17. Density and water content of nanoscale solid C-S-H formed in alkali-activated slag (AAS) paste and implications for chemical shrinkage

    SciTech Connect

    Thomas, Jeffrey J.; Allen, Andrew J.; Jennings, Hamlin M.

    2012-02-15

    Alkali-activated slag (AAS) paste was analyzed using small-angle neutron scattering (SANS). The scattering response indicates that the microstructure consists of a uniform matrix of hydration product with a high surface area studded with unhydrated cores of slag particles. In contrast with portland cement paste, no surface fractal scattering regime was detected, and elevated temperature curing (at 60 Degree-Sign C) had no detectable effect on the microstructure at any length scale studied. The specific surface area of the AAS pastes is about 25% higher than that of a portland cement paste cured under the same conditions. The composition and mass density of the nanoscale solid C-S-H phase formed in the AAS paste was determined using a previously developed neutron scattering method, in conjunction with a hydration model. The result ((CaO){sub 0.99}-SiO{sub 2}-(Al{sub 2}O{sub 3}){sub 0.06}-(H{sub 2}O){sub 0.97}, d = (2.73 {+-} 0.02) g/cm{sup 3}) is significantly lower in calcium and in water as compared to portland cement or pure tricalcium silicate paste. These values were used to calculate the chemical shrinkage that would result from complete hydration of the AAS paste. The result, (12.2 {+-} 1.5) cm{sup 3} of volumetric shrinkage per 100 g of unhydrated cement, is about twice the amount of chemical shrinkage exhibited by normal cement pastes.

  18. Synthesis of 1,2,4-Triazoles via Oxidative Heterocyclization: Selective C-N Bond Over C-S Bond Formation.

    PubMed

    Gogoi, Anupal; Guin, Srimanta; Rajamanickam, Suresh; Rout, Saroj Kumar; Patel, Bhisma K

    2015-09-18

    The higher propensity of C-N over C-S bond forming ability was demonstrated, through formal C-H functionalization during the construction of 4,5-disubstituted 1,2,4-triazole-3-thiones from arylidenearylthiosemicarbazides catalyzed by Cu(II). However, steric factors imparted by the o-disubstituted substrates tend to change the reaction path giving thiodiazole as the major or an exclusive product. Upon prolonging the reaction time, the in situ generated thiones are transformed to 4,5-disubstituted 1,2,4-triazoles via a desulfurization process. Two classes of heterocycles viz. 4,5-disubstituted 1,2,4-triazole-3-thiones and 4,5-disubstituted 1,2,4-triazoles can be synthesized from arylidenearylthiosemicarbazides by simply adjusting the reaction time. Desulfurization of 1,2,4-triazole-3-thiones is assisted by thiophilic Cu to provide 1,2,4-triazoles with concomitant formation of CuS and polynuclear sulfur anions as confirmed from scanning electron microscope and energy dispersive X-ray spectroscopy measurements. A one-pot synthesis of an antimicrobial compound has been successfully achieved following this strategy.

  19. Disposition of S-1108, a new oral cephem antibiotic, and metabolic fate of pivalic acid liberated from [pivaloyl-14C]S-1108 in rats and dogs.

    PubMed Central

    Mizojiri, K; Futaguchi, S; Norikura, R; Katsuyama, Y; Nagasaki, T; Yoshimori, T; Nakanishi, M

    1995-01-01

    [pivaloyl-14C]S-1108, which is 14C labeled at the pivalic acid moiety of the pivaloyloxymethyl side chain of S-1108, was administered orally to rats and dogs, and the disposition of pivalic acid cleft from S-1108 was examined. Besides pivaloylcarnitine and pivaloylglucuronide, pivaloylglycine was identified in dog urine as a metabolite of pivalic acid by thin-layer chromatography and high-performance liquid chromatography analysis. The concentrations in the plasma of rats to which doses of 6.65, 26.6, and 532 mg/kg of body weight were administered showed dose-proportionate levels. The radioactivity was eliminated rapidly, with a half-life of approximately 3 h until 24 h at both the 6.65- and 26.6-mg/kg doses. Free pivalic acid in plasma accounted for more than 80% of the concentration of radioactivity. Radioactivity was distributed throughout the body and was eliminated quickly at a rate similar to that of radioactivity from plasma. Most of the absorbed radioactivity was excreted in the urine, and it was completed within 24 h after administration. In dogs, the half-life of radioactivity in plasma was longer than that in the rats. The ratio of free pivalic acid in plasma was 60 to 70% of the radioactivity in plasma. The concentration of radioactivity in the liver, cortex of the kidney, and skeletal muscle 144 h after oral dosing was more than 10 times higher than the concentration in plasma for all doses. Urinary excretion in dogs was slower than that in rats. The differences in the disposition of pivalic acid between dogs and rats may account for differences in the degree of skeletal muscle disorders. The safety in humans of S-1108 given at 200 mg three times a day is discussed in relation to the metabolic formation of the carnitine conjugate of pivalic acid and the reduction of the carnitine concentration in plasma. PMID:7492083

  20. Jargonial-Obfuscation(J-O) DISambiguation Elimination via Siegel-Baez Cognition Category-Semantics(C-S) in Siegel FUZZYICS=CATEGORYICS (Son of TRIZ)/(F=C) Tabular List-Format Dichotomy Truth-Table Matrix Analytics

    NASA Astrophysics Data System (ADS)

    Siegel, Carl Ludwig; Siegel, Edward Carl-Ludwig

    2011-03-01

    NOT "philosophy" per se but raising serious salient Arnol'd [Huygens and Barrow, Newton and Hooke(96)] questions begged is Rota empiricism Husserl VS. Frege maths-objects Dichotomy controversy: Hill-Haddock[Husserl or Frege?(00)]as manifestly-demonstrated by Hintikka[B.U.]-Critchey[Derrida Deconstruction Ethics(78)] deconstruction; Altshuler TRIZ; Siegel F=C/C-S; Siegel-Baez(UCR) Cognition C-S = "Category-theory ``+'' Cognitive-Semantics[Wierzbica-Langacker-Lakoff-Nunez[Where Maths Comes From(00)]-Fauconnier-Turner[Blending(98)]-Coulson[Semantic-Leaps (00)

  1. Computational modeling of the bHLH domain of the transcription factor TWIST1 and R118C, S144R and K145E mutants

    PubMed Central

    2012-01-01

    Background Human TWIST1 is a highly conserved member of the regulatory basic helix-loop-helix (bHLH) transcription factors. TWIST1 forms homo- or heterodimers with E-box proteins, such as E2A (isoforms E12 and E47), MYOD and HAND2. Haploinsufficiency germ-line mutations of the twist1 gene in humans are the main cause of Saethre-Chotzen syndrome (SCS), which is characterized by limb abnormalities and premature fusion of cranial sutures. Because of the importance of TWIST1 in the regulation of embryonic development and its relationship with SCS, along with the lack of an experimentally solved 3D structure, we performed comparative modeling for the TWIST1 bHLH region arranged into wild-type homodimers and heterodimers with E47. In addition, three mutations that promote DNA binding failure (R118C, S144R and K145E) were studied on the TWIST1 monomer. We also explored the behavior of the mutant forms in aqueous solution using molecular dynamics (MD) simulations, focusing on the structural changes of the wild-type versus mutant dimers. Results The solvent-accessible surface area of the homodimers was smaller on wild-type dimers, which indicates that the cleft between the monomers remained more open on the mutant homodimers. RMSD and RMSF analyses indicated that mutated dimers presented values that were higher than those for the wild-type dimers. For a more careful investigation, the monomer was subdivided into four regions: basic, helix I, loop and helix II. The basic domain presented a higher flexibility in all of the parameters that were analyzed, and the mutant dimer basic domains presented values that were higher than the wild-type dimers. The essential dynamic analysis also indicated a higher collective motion for the basic domain. Conclusions Our results suggest the mutations studied turned the dimers into more unstable structures with a wider cleft, which may be a reason for the loss of DNA binding capacity observed for in vitro circumstances. PMID:22839202

  2. Iridium-mediated C-S bond activation and transformation: organoiridium(III) thioether, thiolato, sulfinato and thiyl radical compounds. Synthesis, mechanistic, spectral, electrochemical and theoretical aspects.

    PubMed

    Das, Ujjwal; Ghorui, Tapas; Adhikari, Basab; Roy, Sima; Pramanik, Shuvam; Pramanik, Kausikisankar

    2015-05-14

    An attractive methodology, single-electron transfer (SET) reductive cleavage of the C-S bond mediated by a metal in the presence of the external stimuli PPh3, has been applied to the kinetically inert IrCl3 in order to synthesize the thiolato complex [Ir(III)(L(S))Cl(PPh3)2] 3 from precursor thioether complexes [Ir(III)(L(SR))Cl2(PPh3)] (R = alkyl) 2. The aforesaid cleavage process in association with (arene)C-H activation furnishes a new class of organosulfur compounds of iridium(III). The thiolato chelate 3 displays a reversible oxidative wave at 0.75 V vs. Ag/AgCl signifying its remarkable nucleophilic character. The high electron density on the thiolato-S vis-à-vis superior nucleophilicity can be envisaged through the formation of a number of S-centered derivatives. This observation has been corroborated with the nature of HOMO in 3, which assumes 49% of S(3p). Notably, the facile oxidative nature of 3 makes it an apposite precursor for metal-stabilized thiyl radical species. Indeed, iridium(III)-stabilized 3˙(+) can be generated by chemical/electrochemical means. The axial EPR spectra with g ∼ 2.0 along with theoretical analysis of SOMO (S(3p) 24% + Ph(π) 43% + d(yz) 15%) and spin density (ρ(S) = +0.543, ρ(Ph) = +0.315, ρ(Ir) = +0.151) of one-electron oxidized 3˙(+) validate the iridium-stabilized thiyl radical description. This observation suggests that the CNS coordination mode in thiophenolato complex 3 is redox-active. Complex 3 is very prone to S-centered oxidation under normal aerobic conditions to yield metallosulfoxide [Ir(III)(L(SO2))Cl(PPh3)2] 4. The enhanced nucleophilicity of thiolato-S can also be manifested via the smooth S-C bond making process with alkyl halides (R'X, R' = Me and allyl; X = Br, I) and subsequent formation of thioether complexes of type [Ir(III)(L(SR'))ClX(PPh3)] 5. The organosulfur compounds of iridium(III) exhibit rich spectral properties including luminescence and the origin of these transitions is scrutinized with

  3. Microstructural and compositional change of NaOH-activated high calcium fly ash by incorporating Na-aluminate and co-existence of geopolymeric gel and C-S-H(I)

    SciTech Connect

    Oh, Jae Eun; Moon, Juhyuk; Oh, Sang-Gyun; Clark, Simon M.; Monteiro, Paulo J.M.

    2012-05-15

    This study explores the reaction products of alkali-activated Class C fly ash-based aluminosilicate samples by means of high-resolution synchrotron X-ray diffraction (HSXRD), scanning electron microscope (SEM), and compressive strength tests to investigate how the readily available aluminum affects the reaction. Class C fly ash-based aluminosilicate raw materials were prepared by incorporating Na-aluminate into the original fly ashes, then alkali-activated by 10 M NaOH solution. Incorporating Na-aluminate reduced the compressive strength of samples, with the reduction magnitude relatively constant regardless of length of curing period. The HSXRD provides evidence of the co-existence of C-S-H with geopolymeric gels and strongly suggests that the C-S-H formed in the current system is C-S-H(I). The back-scattered electron images suggest that the C-S-H(I) phase exists as small grains in a finely intermixed form with geopolymeric gels. Despite providing extra source of aluminum, adding Na-aluminate to the mixes did not decrease the Si/Al ratio of the geopolymeric gel.

  4. Volume and pressure dependences of the electronic, vibrational, and crystal structures of C s2CoC l4 : Identification of a pressure-induced piezochromic phase at high pressure

    NASA Astrophysics Data System (ADS)

    Nataf, L.; Aguado, F.; Hernández, I.; Valiente, R.; González, J.; Sanz-Ortiz, M. N.; Wilhelm, H.; Jephcoat, A. P.; Baudelet, F.; Rodríguez, F.

    2017-01-01

    This work investigates the high-pressure structure of C s2CoC l4 and how it affects the electronic and vibrational properties using optical absorption, Raman spectroscopy, x-ray diffraction, and x-ray absorption in the 0-15 GPa range. In particular, we focus on the electronic and local structures of C o2 + , since compression of C s2CoC l4 yields structural transformations associated with change of coordination around C o2 + , which are eventually responsible for the intense piezochromism at 7 GPa. This study provides a complete characterization of the electronic and vibrational structures of C s2CoC l4 in the Pnma phase as a function of the cell volume and the local CoC l4 bond length, RCo-Cl, as well as its corresponding equation of state. In addition, our interest is to elucidate whether the phase transition undergone by C s2CoC l4 at 7 GPa leads to a perovskite-layer-type structure where C o2 + is sixfold coordinated, decomposes into CsCl +CsCoC l3 , or it involves an unknown phase with different coordination sites for C o2 + . We show that C o2 + is sixfold coordinated in the high-pressure phase. The analysis of optical spectra and x-ray diffraction data suggests the formation of an interconnected structure of exchange-coupled C o2 + through edge-sharing octahedra at high pressure.

  5. Kinetic and DFT studies on the mechanism of C-S bond formation by alkyne addition to the [Mo3S4(H2O)9]4+ cluster.

    PubMed

    Pino-Chamorro, Jose Ángel; Algarra, Andrés G; Fernández-Trujillo, M Jesús; Hernández-Molina, Rita; Basallote, Manuel G

    2013-12-16

    Reaction of [Mo3(μ3-S)(μ-S)3] clusters with alkynes usually leads to formation of two C-S bonds between the alkyne and two of the bridging sulfides. The resulting compounds contain a bridging alkenedithiolate ligand, and the metal centers appear to play a passive role despite reactions at those sites being well illustrated for this kind of cluster. A detailed study including kinetic measurements and DFT calculations has been carried out to understand the mechanism of reaction of the [Mo3(μ3-S)(μ-S)3(H2O)9](4+) (1) cluster with two different alkynes, 2-butyne-1,4-diol and acetylenedicarboxylic acid. Stopped-flow experiments indicate that the reaction involves the appearance in a single kinetic step of a band at 855 or 875 nm, depending on the alkyne used, a position typical of clusters with two C-S bonds. The effects of the concentrations of the reagents, the acidity, and the reaction medium on the rate of reaction have been analyzed. DFT and TD-DFT calculations provide information on the nature of the product formed, its electronic spectrum and the energy profile for the reaction. The structure of the transition state indicates that the alkyne approaches the cluster in a lateral way and both C-S bonds are formed simultaneously.

  6. [Cu30I16(mtpmt)12(μ(10-S4))]: an unusual 30-membered copper(I) cluster derived from the C-S bond cleavage and its use in heterogeneous catalysis.

    PubMed

    Li, Hong-Xi; Zhao, Wei; Li, Hai-Yan; Xu, Zhong-Lin; Wang, Wen-Xia; Lang, Jian-Ping

    2013-05-14

    The Cu(I)-mediated C-S bond cleavage of 5-methyl-4-(p-tolyl)pyrimidine-2-thiol (mtpmtH) gave one 30-nuclear cluster [Cu30I16(mtpmt)12(μ10-S4)], one polymeric complex [(bmtpms)Cu-(μ-I)]n and one tetranuclear complex [(bmptmds){Cu(μ-I)}2]2; the 30-nuclear cluster displayed excellent catalytic performances in the coupling reactions of N-heterocycles and arylboronic acids and could be recycled and reused.

  7. Characterization of white Portland cement hydration and the C-S-H structure in the presence of sodium aluminate by {sup 27}Al and {sup 29}Si MAS NMR spectroscopy

    SciTech Connect

    Andersen, Morten Daugaard; Jakobsen, Hans J.; Skibsted, Joergen

    2004-05-01

    The effects of hydrating a white Portland cement (wPc) in 0.30 and 0.50 M solutions of sodium aluminate (NaAlO{sub 2}) at 5 and 20 deg. C are investigated by {sup 27}Al and {sup 29}Si magic-angle spinning (MAS) NMR spectroscopy. It is demonstrated that NaAlO{sub 2} accelerates the hydration of alite and belite and results in calcium-silicate-hydrate (C-S-H) phases with longer average chain lengths of SiO{sub 4}/AlO{sub 4} tetrahedra. The C-S-H phases are investigated in detail and it is shown that the Al/Si ratio for the chains of tetrahedra is quite constant during the time studied for the hydration (6 h to 2 years) but increases for higher concentration of the NaAlO{sub 2} solution. The average chain lengths of 'pure' silicate and SiO{sub 4}/AlO{sub 4} tetrahedra demonstrate that Al acts as a linker for the silicate chains, thereby producing aluminosilicate chains with longer average chain lengths. Finally, it is shown that NaAlO{sub 2} reduces the quantity of ettringite and results in larger quantities of monosulfate and a calcium aluminate hydrate phase.

  8. Response of duplex Cr(N)/S and Cr(C)/S coatings on 316L stainless steel to tribocorrosion in 0.89% NaCl solution under plastic contact conditions.

    PubMed

    Sun, Y; Dearnley, P A; Mallia, Bertram

    2016-04-27

    Two duplex coatings, Cr(N)/S and Cr(C)/S, were deposited on 316 L stainless steel by magnetron sputtering. The effectiveness of these duplex coatings in improving the tribocorrosion behavior of medical alloys under elastic contact conditions has been demonstrated in a recent publication. The present work focused on the response of these duplex coatings to tribocorrosion under plastic contact conditions. Tribocorrosion tests were conducted in 0.89% NaCl solution at 37°C at an initial contact pressure of 740 MPa and under unidirectional sliding conditions for sliding duration up to 24 h. The results showed that during sliding in the corrosive solution, the duplex coatings were plastically deformed into the substrate to a depth about 1 μm. The Cr(C)/S duplex coating had sufficient ductility to accommodate the deformation without cracking, such that it was worn through gradually, leading to the gradual increase in open circuit potential (OCP) and coefficient of friction (COF). On the other hand, the Cr(N)/S duplex coating suffered from cracking at all tested potentials, leading to coating blistering after prolonged sliding at OCP and stable pit formation in the substrate beneath the coating at applied anodic potentials. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2016.

  9. Rhetoric and Semiotic in C. S. Peirce.

    ERIC Educational Resources Information Center

    Lyne, John R.

    1980-01-01

    Outlines Peirce's philosophy of rhetoric by examining his philosophy of signs and sketching his specific program for rhetoric as a general art for "rendering signs effective." Suggests that Peirce's work is part of a fully elaborated system of inquiry and signification. (JMF)

  10. Development of novel PET probe [¹¹C](R,R)HAPT and its stereoisomer [¹¹C](S,S)HAPT for vesicular acetylcholine transporter imaging: a PET study in conscious monkey.

    PubMed

    Nishiyama, Shingo; Ohba, Hiroyuki; Kobashi, Tatsuhiro; Nakamasu, Yumi; Nakao, Hidekazu; Ogata, Tokutaro; Kitashoji, Takeru; Tsukada, Hideo

    2014-07-01

    Carbon-11-labeled (R,R)trans-8-methyl-2-hydroxy-3-[4-[2-aminophenyl]piperizinyl]-tetralin ([(11)C](R,R)HAPT) and its stereoisomer [(11)C](S,S)HAPT were developed for imaging vesicular acetylcholine transporters (VAChTs), exclusively located in presynaptic cholinergic neurons. Both positron emission tomography (PET) probes were evaluated in the brain of conscious monkey (Macaca mulatta) using high-resolution PET. Time-activity curves (TACs) of [(11)C](R,R)HAPT peaked within 5 min after the injection in all regions except the caudate and putamen, both of which showed peaks around 20 min postinjection. The regional distribution patterns of [(11)C](R,R)HAPT determined as total distribution volume (V(t)) were highest in the putamen, high in the caudate, intermediate in the amygdala, hippocampus, and thalamus, lower in the cingulate gyrus and frontal, temporal, and occipital cortices, and lowest in the cerebellum. In contrast, the distribution and TACs of [(11)C](S,S)HAPT were homogeneous in all regions. The uptake of [(11)C](R,R)HAPT was reduced by 1 mg/kg (-)-vesamicol, a specific VAChT antagonist, in all regions except the cerebellum, but not by 0.1 mg/kg SA4503, a specific sigma-1 receptor agonist. These results well reflect the in vitro affinity assessments using rat cerebral membranes. They also demonstrate that [(11)C](R,R)HAPT is a potential PET probe for noninvasive and quantitative imaging of VAChT in the living brain.

  11. Physics Proofs of Four Millennium-Problems(MP) via CATEGORY-SEMANTICS(C-S)/F=C Aristotle SQUARE-of-OPPOSITION(SoO) DEduction-LOGIC DichotomY

    NASA Astrophysics Data System (ADS)

    Clay, London; Siegel, Edward Carl-Ludwig

    2011-03-01

    Siegel-Baez Cognitive-Category-Semantics"(C-C-S) tabular list-format matrix truth-table analytics SoO jargonial-obfuscation elimination query WHAT? yields four "pure"-maths MP "Feet of Clay!!!" proofs: (1) Siegel [AMS Natl.Mtg.(02)-Abs.973-03-126: (CCNY;64)(94;Wiles)] Fermat's: Last-Thm. = Least-Action Ppl.; (2) P=/=NP TRIVIAL simple Euclid geometry/dimensions: NO computer anything"Feet of Clay!!!"; (3) Birch-Swinnerton-Dyer conjecture; (4) Riemann-hypotheses via COMBO.: Siegel[AMS Natl.Mtg.(02)-Abs.973-60-124] digits log-law inversion to ONLY BEQS with ONLY zero-digit BEC, AND Rayleigh[1870;graph-thy."short-CUT method"[Doyle-Snell, Random-Walks & Electric-Nets,MAA(81)]-"Anderson"[(58)] critical-strip C-localization!!! SoO DichotomY ("V") IdentitY: #s:(Euler v Bernoulli) = (Sets v Multisets) = Quantum-Statistics(FD v BE) = Power-Spectra(1/f(0) v 1/f(1)) = Conic-Sections(Ellipse v Hyperbola) = Extent(Locality v Globality);Siegel[(89)] (so MIScalled) "complexity" as UTTER-SIMPLICITY(!!!) v COMPLICATEDNESS MEASURE(S) definition.

  12. Physics Proofs of Four Millennium-Problems(MP) via CATEGORY-SEMANTICS(C-S)/F=C Aristotle SQUARE-of-OPPOSITION(SoO) DEduction-LOGIC DichotomY

    NASA Astrophysics Data System (ADS)

    Clay, L.; Siegel, E.

    2010-03-01

    Siegel-Baez C-S/F=C tabular list-format matrix truth-table analytics SoO jargonial-obfuscation elimination query WHAT? yields four ``pure''-maths MP ``Feet of Clay!!!'' proofs:(1)Siegel [AMS Natl.Mtg.(2002)-Abs.#:973-03-126:(@CCNY;1964!!!)<<<(1994; Wiles)]Fermat's: Last-Theorem = Least-Action Principle; (2) P=/=NP TRIVIAL simple Euclid geometry/dimensions: NO computer anything;``Feet of Clay!!!''; (3)Birch-Swinnerton-Dyer conjecture; (4)Riemann-hypotheses via combination of: Siegel [AMS Natl.Mtg. (2002)-Abs.#:973-60-124 digits logarithmic-law simple algebraic- inversion to ONLY BEQS with ONLY zero-digit BEC, AND Rayleigh [(1870);graph-theory ``short-CUT method''[Doyle- Snell,Random- Walks & Electric-Networks,MAA(1981)]-``Anderson'' [PRL(1958)] critical-strip 1/2 complex-plane localization!!! SoO DichotomY (``v'') IdentitY: numbers(Euler v Bernoulli) = (Sets v Multisets) = Quantum-Statistics(F.-D. v B.-E.) = Power- Spectra(1/f^(0) v 1/f^(1.000...) = Conic-Sections(Ellipse v (Parabola) v Hyperbola) = Extent(Locality v Globality); Siegel [MRS Fractals Symp.(1989)](so MIScalled)``complexity'' as UTTER- SIMPLICITY (!!!) v COMPLICATEDNESS MEASURE(S) definition.

  13. X-ray crystallographic characterization of new soluble endohedral fullerenes utilizing the popular C82 bucky cage. Isolation and structural characterization of Sm@C3v(7)-C82, Sm@C(s)(6)-C82, and Sm@C2(5)-C82.

    PubMed

    Yang, Hua; Jin, Hongxiao; Wang, Xinqing; Liu, Ziyang; Yu, Meilan; Zhao, Fukun; Mercado, Brandon Q; Olmstead, Marilyn M; Balch, Alan L

    2012-08-29

    Three isomers of Sm@C(82) that are soluble in organic solvents were obtained from the carbon soot produced by vaporization of hollow carbon rods doped with Sm(2)O(3)/graphite powder in an electric arc. These isomers were numbered as Sm@C(82)(I), Sm@C(82)(II), and Sm@C(82)(III) in order of their elution times from HPLC chromatography on a Buckyprep column with toluene as the eluent. The identities of isomers, Sm@C(82)(I) as Sm@C(s)(6)-C(82), Sm@C(82)(II) as Sm@C(3v)(7)-C(82), and Sm@C(82)(III) as Sm@C(2)(5)-C(82), were determined by single-crystal X-ray diffraction on cocrystals formed with Ni(octaethylporphyrin). For endohedral fullerenes like La@C(82), which have three electrons transferred to the cage to produce the M(3+)@(C(82))(3-) electronic distribution, generally only two soluble isomers (e.g., La@C(2v)(9)-C(82) (major) and La@C(s)(6)-C(82) (minor)) are observed. In contrast, with samarium, which generates the M(2+)@(C(82))(2-) electronic distribution, five soluble isomers of Sm@C(82) have been detected, three in this study, the other two in two related prior studies. The structures of the four Sm@C(82) isomers that are currently established are Sm@C(2)(5)-C(82), Sm@C(s)(6)-C(82), Sm@C(3v)(7)-C(82), and Sm@C(2v)(9)-C(82). All of these isomers obey the isolated pentagon rule (IPR) and are sequentially interconvertable through Stone-Wales transformations.

  14. El Midwest Canto Al Pueblo: "otra vez, c/s"

    ERIC Educational Resources Information Center

    Guernica, Antonio Jose; Saavedra, Pilar

    1977-01-01

    El Midwest Canto Al Pueblo was a successful effort to bring artists, poets, musicians, and cultural workers together in a setting conducive to a free and easy interchange of ideas and directions in order to reaffirm, share, and celebrate the identity of La Raza with el pueblo. The activities during the 10-day festival included poetry readings,…

  15. A,B,C`s of nuclear science

    SciTech Connect

    Noto, V.A.; Norman, E.B.; Chan, Yuen-Dat; Dairiki, J.; Matis, H.S.; McMahan, M.A.; Otto, R.

    1995-08-07

    This introductory level presentation contains information on nuclear structure, radioactivity, alpha decay, beta decay, gamma decay, half-life, nuclear reactions, fusion, fission, cosmic rays, and radiation protection. Nine experiments with procedures and test questions are included.

  16. Darwin's historical sketch - an American predecessor: C.S. Rafinesque.

    PubMed

    Ambrose, C T

    2010-01-01

    When early reviewers of Darwin's "On the origin of species" chided him for neglecting to mention predecessors to his theory of evolution, he added an "historical sketch" in later editions. Among the predecessors he cited was a French émigré to American named Constantine Samuel Rafinesque, who in the mid-1830s had written about the emergence of new species at a time when most naturalists (including Darwin initially) accepted the biblical story of creation and assumed the immutability of species. Rafinesque discovered and named thousands of new plants and animals in his American travels and flooded the taxonomic literature with reports, which seemed incomplete, confusing, and excessive to other naturalists. He alienated many who later dismissed his findings and excluded them from the biological literature. Soon after Rafinesque's death in 1840, Asa Gray, the young American botanist, wrote a damning critique of his work and suggested it be ignored. How Darwin learned of Rafinesque and his views on species is the focus of this essay, which also mentions briefly the two other American naturalists cited by Darwin in his sketch. Gray seems the likely informant through his correspondence with Darwin or his close associates.

  17. Hemoglobin C, S-C, and E Diseases

    MedlinePlus

    ... Anemia Due to Excessive Bleeding Iron Deficiency Anemia Vitamin Deficiency Anemia Anemia of Chronic Disease Aplastic Anemia Autoimmune ... Anemia Due to Excessive Bleeding Iron Deficiency Anemia Vitamin Deficiency Anemia Anemia of Chronic Disease Aplastic Anemia Autoimmune ...

  18. Washington, D.C.'s vanishing springs and waterways

    USGS Publications Warehouse

    Williams, Garnett P.

    1977-01-01

    This paper traces the disappearance or reduction of the many prominent springs and waterways that existed in Washington, D.C. , 200 years ago. The best known springs were the Smith Springs (now under the McMillan Reservoir), the Franklin Park Springs (13th and I Streets, NW.), Gibson 's Spring (15th and E Streets, NE.), Caffrey 's Spring (Ninth and F Streets, NW.), and the City Spring (C Street between Four and One-Half and Sixth Streets, NW.). Tiber Creek, flowing south to the Capitol and thence westward along Consititution Avenue, joined the Potomac River at 17th Street and Constitution Avenue. In the 1800's, the Constitution Avenue reach was made into a canal which was used by scows and steamboats up to about 1850. The canal was changed into a covered sewer in the 1870's, and the only remaining visible surface remnant is the lock-keeper 's little stone house at 17th and Constitution Avenue, NW. Because of sedimentation problems and reclamation projects, Rock Creek, the Potomac River , and the Anacostia River are considerably narrower and shallower today than they were in colonial times. For example, the mouth of Rock Creek at one time was a wide, busy ship harbor , which Georgetown used for an extensive foreign trade, and the Potomac River shore originally extended to 17th and Constitution Avenue, NW. (Woodard-USGS)

  19. Total Synthesis of [Ψ[C(=S)NH]Tpg4]Vancomycin Aglycon, [Ψ[C(=NH)NH]Tpg4]Vancomycin Aglycon, and Related Key Compounds: Reengineering Vancomycin for Dual d-Ala-d-Ala and d-Ala-d-Lac Binding

    PubMed Central

    Xie, Jian; Okano, Akinori; Pierce, Joshua G.; James, Robert C.; Stamm, Simon; Crane, Christine M.; Boger, Dale L.

    2011-01-01

    The total synthesis of [Ψ[C(=S)NH]Tpg4]vancomycin aglycon (8) and its unique AgOAc-promoted single-step conversion to [Ψ[C(=NH)NH]Tpg4]vancomycin aglycon (7), conducted on a fully deprotected substrate, are disclosed. The synthetic approach not only permits access to 7, but it also allows late stage access to related residue 4 derivatives, alternative access to [Ψ[CH2NH]Tpg4]vancomycin aglycon (6) from a common late stage intermediate, and provides authentic residue 4 thioamide and amidine derivatives of the vancomycin aglycon that will facilitate ongoing efforts on their semisynthetic preparation. In addition to early stage residue 4 thioamide introduction, allowing differentiation of one of seven amide bonds central to the vancomycin core structure, the approach relied on two aromatic nucleophilic substitution reactions for formation of the 16-membered diaryl ethers in the CD/DE ring systems, an effective macrolactamization for closure of the 12-membered biaryl AB ring system, and the defined order of CD, AB, and DE ring closures. This order of ring closures follows their increasing ease of thermal atropisomer equilibration, permitting the recycling of any newly generated unnatural atropisomer under progressively milder thermal conditions where the atropoisomer stereochemistry already set is not impacted. Full details of the evaluation of 7 and 8 along with several related key synthetic compounds containing the core residue 4 amidine and thioamide modifications are reported. The binding affinity of compounds containing the residue 4 amidine with the model d-Ala-d-Ala ligand 2 was found to be only 2–3 times less than the vancomycin aglycon (5) and this binding affinity is maintained with the model d-Ala-d-Lac ligand 4, representing a nearly 600-fold increase in affinity relative to the vancomycin aglycon. Importantly, the amidines display effective dual, balanced binding affinity for both ligands (Ka 2/4 = 0.9–1.05) and they exhibit potent antimicrobial

  20. Unexpected reactions of 2,5-dimethylthiopene (2,5-Me{sub 2}t) in Cp{sup *}Ir({eta}{sup 5}-2,5-Me{sub 2}T){sup 2+}, Cp{sup *}Ir({eta}{sup 4}-2,5-Me{sub 2}T), and Cp{sup *}Ir(C,S-2,5-Me{sub 2}T) with cobaltocene

    SciTech Connect

    Chen, J.; Daniels, L.M.; Angelica, R.J. |

    1996-02-20

    The reaction of Cp{sup *}Ir({eta}{sup 5}-2,5-Me{sub 2}T){sup 2+} (1) (Cp{sup *} = {eta}{sup 5}-C{sub 5}Me{sub 5}) with the reducing agent Cp{sub 2}Co yields Cp{sup *}Ir({eta}{sup 4}-2,5-Me{sub 2}T) (2) and Cp{sup *}Ir(C,S-2,5-Me{sub 2}T) (3), as well as the unexpected Cp{sup *}Ir({eta}{sup 4}-2,5-Me{sub 2}T{center_dot}C{sub 5}H{sub 4}) (4), which can also be prepared by reacting 1 with Cp{sup -}. An X-ray diffraction study of 4 shows the {eta}{sup 4}-2,5-Me{sub 2}T{center_dot}C{sub 5}H{sub 5} ligand to be a ring-opened 2,5-Me{sub 2}T allyl thiolate conjugated to a cyclopentadienylidene unit. The reduced products 2 and 3 react with Cp{sub 2}Co to give a ferrole-type product Cp{sup *}[IrC(Me)=CHCH=C(Me)]CoCp in which the planar iridacyclopentadiene ring is {pi}-bonded to the cobalt, as established by a structural investigation. The Cp{sup *}Co analog of 5 is prepared by the reaction of 2 or 3 with Cp{sup *}Co(CH{sub 2}=CH{sub 2}){sub 2}. These studies demonstrate that cobaltocene and Cp{sup *}Co(CH{sub 2}=CH{sub 2}){sub 2} readily desulfurize the 2,5-dimethylthiophene ligand in 2 and 3, which supports a previously proposed mechanism for the thiophene hydrodesulfurization. 37 refs., 2 figs., 5 tabs.

  1. A Multicultural Social Studies Series for C.S.L. Students. Book 1. Europe.

    ERIC Educational Resources Information Center

    Chan, Yiu Man

    This text is written primarily for students of Chinese as a second language who are continuing in the ESEA Title VII Chinese Bilingual Pilot Program at the secondary level, and introduces different aspects and general knowledge of Europe. The text is divided into twenty-five lessons, having the following headings: European Countries, Class, On the…

  2. A Multicultural Social Studies Series for C.S.L. Students, Book 2.

    ERIC Educational Resources Information Center

    Moy, Mary C.; And Others

    A multicultural social studies text for junior high school students of Chinese as a second language is presented. This level two text is designed for the Chinese Bilingual Pilot Program sponsored through the Elementary and Secondary Education Act, Title VII. The book consists of 25 lessons with no more than 50 characters each. Each lesson has a…

  3. C.S. 211 Bilingual Gifted and Talented Program. Final Evaluation Report, 1979-80.

    ERIC Educational Resources Information Center

    Brumberg, Stephan F.; Toledo, Victor

    This Title VII Bilingual Gifted and Talented Program was conducted in a community school district in New York City in 1979-80. The program served Hispanic students in grades K-6. A description of the school and the rationale for the program are presented, and program objectives are discussed. These are grouped in three major areas: (1) the…

  4. Role of TBATB in nano indium oxide catalyzed C-S bond formation.

    PubMed

    Gogoi, Prasanta; Hazarika, Sukanya; Barman, Pranjit

    2015-09-29

    Nano sized indium oxide is found to be an efficient catalyst for the conversion of thiols to sulfides using Na2CO3 as base and TBATB as reagent in DMSO at 110 °C. Here in situ generation of bromo intermediate by TBATB takes place through indium surface. A variety of aryl sulfides can be synthesized in excellent yields from less reactive chlorides, boronic acids and thiols.

  5. Role of TBATB in nano indium oxide catalyzed C-S bond formation

    PubMed Central

    Gogoi, Prasanta; Hazarika, Sukanya; Barman, Pranjit

    2015-01-01

    Nano sized indium oxide is found to be an efficient catalyst for the conversion of thiols to sulfides using Na2CO3 as base and TBATB as reagent in DMSO at 110 °C. Here in situ generation of bromo intermediate by TBATB takes place through indium surface. A variety of aryl sulfides can be synthesized in excellent yields from less reactive chlorides, boronic acids and thiols. PMID:26415729

  6. Role of TBATB in nano indium oxide catalyzed C-S bond formation

    NASA Astrophysics Data System (ADS)

    Gogoi, Prasanta; Hazarika, Sukanya; Barman, Pranjit

    2015-09-01

    Nano sized indium oxide is found to be an efficient catalyst for the conversion of thiols to sulfides using Na2CO3 as base and TBATB as reagent in DMSO at 110 °C. Here in situ generation of bromo intermediate by TBATB takes place through indium surface. A variety of aryl sulfides can be synthesized in excellent yields from less reactive chlorides, boronic acids and thiols.

  7. New Leaders for Troubled Schools: Jacquelyn Davis Works with D.C.'s Education Bureaucracy

    ERIC Educational Resources Information Center

    Currie, Tyler

    2007-01-01

    In this article the author presents Jacquelyn Davis, the executive director of the Washington office of New Leaders for New Schools (NLNS), a nonprofit dedicated to training recruits drawn from a range of sectors for leadership in failing school systems. Davis is overseeing a rapidly expanding crop of new principals who are promising to revitalize…

  8. Brigadier General Henry A. Wise, C.S.A. and the Western Virginia Campaign of 1861

    DTIC Science & Technology

    1980-06-06

    Caskie , reached Glenville and was confronted by a battalion of the 17th Ohio Infantry. 3 3 After some skirmishing and a lot of shooting on the...outskirts of town, the Union force drew into a line of battle at the courthouse. Caskie chose not to assault. Both sides ex- changed fire all night without a

  9. Biostimulation induces syntrophic interactions that impact C, S and N cycling in a sediment microbial community

    SciTech Connect

    Handley, KM; Verberkmoes, Nathan C; Steefel, Carl I; Sharon, I; Williams, Ken; Miller, CS; Frischkorn, Kyle C; Chourey, Karuna; Thomas, Brian; Shah, Manesh B; Long, Phil; Hettich, Robert {Bob} L; Banfield, Jillian F.

    2013-01-01

    Stimulation of subsurface microorganisms to induce reductive immobilization of metals is a promising approach for bioremediation, yet the overall microbial community response is typically poorly understood. Here we used community proteogenomics to test the hypothesis that excess input of acetate activates syntrophic interactions among autotrophs and heterotrophs. A flow-through sediment column was incubated in a groundwater well of an acetate-amended aquifer. Genomic sequences from the community recovered during microbial sulfate reduction were used to econstruct, de novo, near-complete genomes for Desulfobacter (Deltaproteobacteria) and relatives of Sulfurovum and Sulfurimonas (Epsilonproteobacteria), and Bacteroidetes. Partial genomes were obtained for Clostridiales (Firmicutes) and Desulfuromonadales-like Deltaproteobacteria. The majority of proteins identified by mass spectrometry corresponded to Desulfobacter-like species, and demonstrate the role of this organism in sulfate reduction (Dsr and APS), nitrogen-fixation (Nif) and acetate oxidation to CO2 during amendment. Results suggest less abundant Desulfuromonadales and Bacteroidetes also actively contributed to CO2 production via the TCA cycle. Proteomic data indicate that sulfide was partially re-oxidized by Epsilonproteobacteria through nitrate-dependent sulfide oxidation (using Nap, Nir, Nos, SQR and Sox), with CO2 fixed using the reverse TCA cycle. Modeling shows that this reaction was thermodynamically possible, and kinetically favorable relative to acetate-dependent denitrification. We conclude that high-levels of carbon amendment aimed to stimulate anaerobic heterotrophy led to carbon fixation in co-dependent chemoautotrophs. These results have implications for understanding complex ecosystem behavior, and show that high levels of organic carbon supplementation can expand the range of microbial functionalities accessible for ecosystem manipulation.

  10. Research of Efficient C/S Model Based File Transfer Method

    NASA Astrophysics Data System (ADS)

    Li, Xubin; Zou, Quan; Jiang, Yi

    The one-to-multiple file transfer problem has not been solved under the Linux system. In this paper, we take socket programming to accomplish Client/Server model based file transfer system and develop efficient software which not only support multiple clients and files transferring simultaneously, but also support transmission resuming from breakpoint. Our research focuses on solving the multi-thread concurrency, transmission resuming from breakpoint, thread pool, buffer queue and other aspects of problem. Our work is the basic foundation of FTP servers, file transfer software in local area network and large-scale examination system, etc.

  11. Portal vein thrombosis with protein C-S deficiency in a non-cirrhotic patient

    PubMed Central

    Rodríguez-Leal, Gustavo A; Morán, Segundo; Corona-Cedillo, Roberto; Brom-Valladares, Rocío

    2014-01-01

    There are several conditions that can lead to portal vein thrombosis (PVT), including including infection, malignancies, and coagulation disorders. Anew condition of interest is protein C and S deficiencies, associated with hypercoagulation and recurrent venous thromboembolism. We report the case of a non-cirrhotic 63-year-old male diagnosed with acute superior mesenteric vein thrombosis and PVT and combined deficiencies in proteins C and S, recanalized by short-term low molecular heparin plus oral warfarin therapy. PMID:25068006

  12. Qualitative Maintenance Experience Handbook. P-3C/S-3A Supplement.

    DTIC Science & Technology

    1977-06-15

    Test Equipment Required: Actions: 1. Move seat up and down. 2. Check clearances, firing gates. 8. ANALYST’S COMMENTS: The seat installation itself is...and remove the whole assembly, including the quadrants. (See continuation sheet.) 43 N30 ,ENCLAT URE: Elevator Hydraulic Booster Package WUC: 14832...3A uses four bolts, the aft two nearly impossible to reach. In such case- the use of a passive retainer such as a sheet metal lip flange would

  13. Synthesis of vinyl sulfides by copper-catalyzed decarboxylative C-S cross-coupling.

    PubMed

    Ranjit, Sadananda; Duan, Zhongyu; Zhang, Pengfei; Liu, Xiaogang

    2010-09-17

    A novel method for the synthesis of vinyl sulfides by the decarboxylative cross-coupling of arylpropiolic acids with thiols using copper(I) salts as catalysts has been developed. In the presence of CuI and Cs(2)CO(3), a variety of thiols reacted with arylpropiolic acids to afford the corresponding vinyl sulfides in good to excellent yields with high stereoselectivity for Z-isomers.

  14. Success in College: From "C"s in High School to "A"s in College

    ERIC Educational Resources Information Center

    Burns, Peter F.

    2006-01-01

    This book provides important information and advice that students need in order to learn more and receive higher grades offers strategies for test and note taking, studying, writing papers, and making class schedules. This book also gives an insider's guide to the academic semester, in-class behavior, and how and when to approach professors.…

  15. Social Studies in the Nineties: An N.H.C.S.S. Statement.

    ERIC Educational Resources Information Center

    Adams, Ron; And Others

    The goal of the New Hampshire Council for the Social Studies is to actively work to improve social studies instruction in New Hampshire in the 1990s. This guide outlines the basic goals, structure, and methods of the social studies curriculum, K-12, for New Hampshire. The guide provides a definition along with a rationale for social studies…

  16. Inside IMPACT: D.C.'s Model Teacher Evaluation System. Education Sector Reports

    ERIC Educational Resources Information Center

    Headden, Susan

    2011-01-01

    School districts across the country are struggling with whether--and how--to incorporate multiple measures into teacher evaluation systems. In the District of Columbia, however, the decision has already been made. The D.C. IMPACT system, originally developed under former Chancellor Michelle Rhee, is a rigid, numerically based teacher evaluation…

  17. D.C.'s Achievement Gap: Why Place Matters. Data Snapshot

    ERIC Educational Resources Information Center

    DC Action for Children, 2012

    2012-01-01

    Every child deserves educational opportunity and the chance to achieve, no matter his or her school, neighborhood or background. Unfortunately, large and persistent disparities in achievement among public school students in the District of Columbia indicate that all children here may not have the same opportunities. This Data Snapshot examines…

  18. Global nuclear material monitoring with NDA and C/S data through integrated facility monitoring

    SciTech Connect

    Howell, J.A.; Menlove, H.O.; Argo, P.; Goulding, C.; Klosterbuer, S.; Halbig, J.

    1996-09-01

    This paper focuses on a flexible, integrated demonstration of a monitoring approach for nuclear material monitoring. This includes aspects of item signature identification, perimeter portal monitoring, advanced data analysis, and communication as a part of an unattended continuous monitoring system in an operating nuclear facility. Advanced analysis is applied to the integrated nondestructive assay and containment and surveillance data that are synchronized in time. End result will be the foundation for a cost-effective monitoring system that could provide the necessary transparency even in areas that are denied to foreign nationals of both US and Russia should these processes and materials come under full-scope safeguards or bilateral agreements. Monitoring systems of this kind have the potential to provide additional benefits including improved nuclear facility security and safeguards and lower personnel radiation exposures. Demonstration facilities in this paper include VTRAP-prototype, Los Alamos Critical Assemblies Facility, Kazakhstan BM-350 Reactor monitor, DUPIC radiation monitoring, and JOYO and MONJU radiation monitoring.

  19. Homolytic S-S bond dissociation of 11 bis(thiocarbonyl)disulfides R-C(=S)-S-S-C(=S)R and prediction of a novel rubber vulcanization accelerator.

    PubMed

    Mak, Adrian Matthew; Steudel, Ralf; Wong, Ming Wah

    2008-06-02

    The structures and energetics of eight substituted bis(thiocarbonyl)disulfides (RCS(2))(2), their associated radicals RCS(2)(*), and their coordination compounds with a lithium cation have been studied at the G3X(MP2) level of theory for R = H, Me, F, Cl, OMe, SMe, NMe(2), and PMe(2). The effects of substituents on the dissociation of (RCS(2))(2) to RCS(2)(*) were analyzed using isodesmic stabilization reactions. Electron-donating groups with an unshared pair of electrons have a pronounced stabilization effect on both (RCS(2))(2) and RCS(2)(*). The S-S bond dissociation enthalpy of tetramethylthiuram disulfide (TMTD, R = NMe(2)) is the lowest in the above series (155 kJ mol(-1)), attributed to the particular stability of the formed Me(2)NCS(2)(*) radical. Both (RCS(2))(2) and the fragmented radicals RCS(2)(*) form stable chelate complexes with a Li(+) cation. The S-S homolytic bond cleavage in (RCS(2))(2) is facilitated by the reaction [Li(RCS(2))(2)](+)+Li(+)-->2 [Li(RCS(2))](*+). Three other substituted bis(thiocarbonyl) disulfides with the unconventional substituents R = OSF(5), Gu(1), and Gu(2) have been explored to find suitable alternative rubber vulcanization accelerators. Bis(thiocarbonyl)disulfide with a guanidine-type substituent, (Gu(1)CS(2))(2), is predicted to be an effective accelerator in sulfur vulcanization of rubber. Compared to TMTD, (Gu(1)CS(2))(2) is calculated to have a lower bond dissociation enthalpy and smaller associated barrier for the S-S homolysis.

  20. Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H

    SciTech Connect

    Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C.

    2010-09-15

    In the context of waste confinement, concrete may be used both as a confinement and as a building material. Concerning radwaste, the heat released during radioactive decay will modify the equilibrium constants of the minerals forming the concrete. The present work aims to elucidate the temperature dependency of the thermodynamic functions related to minerals from the concrete or associated with some of its degradation products. A large set of experimental data has been collected, for the chemical systems SO{sub 3}-Al{sub 2}O{sub 3}-CaO-CO{sub 2}-Cl-H{sub 2}O and SiO{sub 2}-Al{sub 2}O{sub 3}-CaO-H{sub 2}O, including iron and magnesium bearing phases. Most of the data collected concern experiments in aqueous media but results from calorimetric studies were also included, when available. Based on selected thermodynamic properties for each phase, predominance diagrams were drawn for the chemical elements listed above. Phase relations reported into predominance diagram appear rather consistent with most of the literature results. The case of katoite has been especially discussed, because it shows inconsistencies with respect to a hydrogarnet-grossular solid solution and with respect to phase relations reported into already published works. Finally, we underline the chemical compatibility of Portland cement pastes with carbonate aggregates, compared to silicates, for long-term storage applications.

  1. Standards in C.S.E. and G.C.E.: English and Mathematics. Working Paper No. 9.

    ERIC Educational Resources Information Center

    Schools Council, London (England).

    Attainment tests in English and mathematics were administered to a total sample of 2,011/15-year old students. The English test consisted of a composition and a test battery of objective items. Marking of the composition was made by the test designer on a rapid first-impression reading. The objective test battery consisted of a comprehension test,…

  2. Reid's Read-Alouds 2: Modern-Day Classics from C.S. Lewis to Lemony Snicket

    ERIC Educational Resources Information Center

    Reid, Rob

    2011-01-01

    Need a one-stop resource for jumpstarting sleepy library visitors? Ready to add punch to classroom discussions? In this companion to his best-selling book "Reid's Read-Alouds", children's lit guru Reid dips back into the classics to highlight outstanding titles published between 1950 and 1999 that continue to connect with kids and teens today.…

  3. Insight into elastic behavior of calcium silicate hydrated oxide (C-S-H) under pressure and composition effect

    SciTech Connect

    Zaoui, Ali

    2012-02-15

    The present work relates to the study of structural and elastic properties of Tobermorite 11 A as a function of external pressure and composition in terms of calcium to silicon ratio. Basing on the lattice dynamics method, the main aim of this work is precisely to shed light, for the first time, on the high pressure structural phase transition in Tobermorite 11 A and the possible correlation with some elastic quantities. In order to check the transferability of the potentials used we have, additionally, performed a single calculation based on the density functional theory (DFT) for a pressure of 15 GPa in the case of Ca/Si = 1. The variation of the unit cell parameters with pressure indicates that Tobermorite 11 A undergoes a structural instability around 15 GPa along b-axis and around 20 GPa along a-axis which is confirmed from our calculations of X-Rays diffraction patterns at various pressure values. We have also observed the anisotropic character of the Tobermorite structure for both cases (Ca/Si = 1 and Ca/Si = 0.83). Our results show that around 20 GPa an important change appears in the elastic behaviour of Tobermorite. As pressure increases the calculated elastic quantities for Ca/Si = 1 became closer to those evaluated for Ca/Si = 0.83, which may stimulate further experimental and theoretical research on the matter.

  4. Hydrogen Induced C-C, C-N, & C-S Bond Activation on Pt & Ni Surfaces

    SciTech Connect

    Gland, J. L.

    2004-07-29

    The primary reactions investigated were chosen based on their importance in fuel and chemical production as well as in environmental remediation, and include reactions for hydrodesulfurization (HDS), hydrodenitrogenation (HDN), carbon-carbon hydrogenolysis, and hydrocarbon oxidation.

  5. Challenging the Objectivist Paradigm: Teaching Biblical Theology with J. R. R. Tolkien, C. S. Lewis, and Guillermo del Toro

    ERIC Educational Resources Information Center

    Lief, Jason

    2009-01-01

    The dissimilarity that exists between the historical and cultural situation of North American college students and the world described by the biblical authors poses a problem for theological and religious education. While the biblical authors tell fantastic stories of miracle and magic, the scientific and technological paradigm prevalent in…

  6. [Hydrogen induced C-C, C-N, and C-S bond activities on Pi and Ni surfaces]: Summary

    SciTech Connect

    Gland, J.L.

    1994-12-31

    This document summarizes research applied to chemical bond activation studies. Topics summarized include: Carbon nitrogen bonds experimentation with aniline on Ni(111), Mi(100), and Pt(111) surfaces; carbon sulfur bonds experimentation with methanethiol, phenylthiol, and dimethyl disulfide on Pt(111) and Ni(111) surfaces; carbon-carbon bonds experimentation on Ni(100), Ni(111) and Pt(111) surfaces; and in-situ fluorescence yield near edge spectroscopy.

  7. Integrative molecular and microanalytical studies of syntrophic partnerships linking C, S, and N cycles in anoxic environments

    SciTech Connect

    Orphan, Victoria

    2016-07-15

    Syntrophy and other forms of symbiotic associations between microorganisms are central to carbon and nutrient cycling in the environment. However, the inherent interdependence of these interactions, dynamic behavior, and frequent existence at thermodynamic limits has hindered our ability to both recognize syntrophic partnerships in nature and effectively study their behavior in the laboratory. To characterize and understand the underlying factors influencing syntrophic associations within complex communities requires a suite of tools that extend beyond basic molecular identification and cultivation. This specifically includes methods that preserve the natural spatial relationships between metabolically interdependent microorganisms while allowing downstream geochemical and/or molecular analysis. With support from this award, we have developed and applied new combinations of molecular, microscopy, and stable isotope-based methodologies that enable the characterization of fundamental links between phylogenetically-identified microorganisms and their specific metabolic activities and interactions in the environment. Through the coupling of fluorescence in situ hybridization (FISH) with cell capture and targeted metagenomics (Magneto-FISH), and FISH + secondary ion mass spectrometry (i.e. FISH-SIMS or FISH-nanoSIMS), we have defined new microbial interactions and the ecophysiology of anaerobic microorganisms involved in environmental methane cycling.

  8. Effect of Material Ion Exchanges on the Mechanical Stiffness Properties and Shear Deformation of Hydrated Cement Material Chemistry Structure C-S-H Jennit - A Computational Modeling Study

    DTIC Science & Technology

    2014-01-01

    and high versatility, cement has remained the most widely utilized material in the world [2]. The starting material of cement is the clinker phase...things of God. v Dedication This work is dedicated to God almighty the giver of life and strength . It is also dedicated to my parents Mr...Jennite Structures (% Weight) ................................................ 34 Table 5 Shear Modulus, Strength and Maximum Shear Deformation of cb

  9. Simultaneous N, C, S isotopic analyses using purge and trap EA technology. Application to δ34S analyses of natural phosphate material NBS120c and BCR32

    NASA Astrophysics Data System (ADS)

    Fourel, F. P.; Lecuyer, C.; Martineau, F.

    2013-12-01

    The first example of stable isotope analyses in continuous flow mode by Preston et al in 19861 involved Elemental Analyser Isotopic Ratio Mass Spectrometry (EA-IRMS) dedicated to carbon isotopes in combustion mode. EA-IRMS has since then evolved to allow 34S/32S determinations still in combustion mode and mainly to access pyrolysis reaction for O and H isotopes. As far as combustion EA-IRMS is concerned the technique itself has remained unchanged since the development of 'purge and trap' separation techniques online with IRMS instruments. Here we have used a high-precision, easy, low-cost and rapid method of simultaneous carbon, nitrogen and sulphur isotope analysis using this new type of elemental analyser based on 'purge and trap' technology 2,3. Simultaneous determinations, performed on the same aliquot of 13C, 15N and 34S are demonstrated. Emphasis is put on the high quality of 34S/32S determinations. First concentrating on peak shapes, yields of conversion and preliminary results. Then the reliability and accuracy of such a technique is illustrated using analyses from various international reference materials. Alongside international reference material working NCS calibrated material has been selected and characterized prior to apply this technology to calibrate natural phosphate material used as compositional reference material BCR32 and NBS120c. δ34S values of respectively 15.62×0.32‰ and 16.5×0.17‰ are proposed for those samples with sulphur concentrations below the 1% level. The possibility to reliably measure S isotopes on that kind of samples opens up new fields of investigation especially for paleoenvironmental reconstructions. Keywords: carbon, nitrogen, sulfur, isotope, combustion, phosphate, elemental-analyser 1. T. Preston, N.J.P. Owens: Preliminary 13C Measurements using a Gas Chromatograph Interfaced to an Isotope Ratio Mass Spectrometer. Biomedical. Mass Spectrom. 1985, 12-9, 510. 2. H.P. Sieper, H.J. Kupka, L. Lange, A. Rossmann, N. Tanz , H.L. Schmidt. Essential methodological improvements in the oxygen isotope ratio analysis of N-containing organic compounds Rapid Commun. Mass Spectrom. 2010, 24, 2849. 3. F. Fourel, F.Martineau, C. Lecuyer, H.J. Kupka, L. Lange, C. Ojeimi and M. Seed. 18O/16O ratio measurements of inorganic and organic materials by EA-Pyrolysis-IRMS continuous flow techniques. 2011, Rapid Commun.Mass Spectrom. 2011, 25, 2691.

  10. Charlotte, N.C.'s Project L.I.F.T.: Ranson IB Middle School Launches an Opportunty Culture. An Opportunity Culture Case Study

    ERIC Educational Resources Information Center

    Barrett, Sharon Kebschull; Han, Jiye Grace

    2015-01-01

    Principal Alison Harris is blunt in describing what she confronted on her arrival to Ranson IB Middle School in 2011. "I was placed in what many people would call an impossible situation," she says. During her initial visit to the school in 2009-10, she watched as students changed classes--while teachers pressed against the lockers to…

  11. Geochemical and isotopic (Sr, O, C, S) evidence for multiple fluid sources for the Muþ barite deposits, SE Anatolia, Turkey

    NASA Astrophysics Data System (ADS)

    Kumral, M.; Baran, A.; Budakoglu, M.

    2009-05-01

    Barite mineralizations are observed in recrystalized and dolomitic limestones relating to Devonian aged Ground Formation, and in forms of veins, clearance filling ; and they are mostly hydrothermal characterized. It was defined by the results of field observations and analysis that barite mineralization is accompanied by the elements like copper, lead and zinc. That 18O and 87Sr/86Sr isotope values of limestones and barites which are wall rocks are very close reminds same origin formation. According to the relations of ore and wall rock, the most natural source that may cause mineralization is Devonian sea water, but mineralization has higher trace element and rare earth element concentrations. That Eu characterizing continental climate from rare earth elements was found high and Ce, characteristic of sea water, was negative preoccupy that mineralization in the area did not create any formation. In addition, considering that high 34S (‰ 17-44) and 18O values (‰ 12-20) and 87Sr/86Sr isotopes characterize the continental crust, a complicate formation mechanism is seen. It is thought that the solution causing mineralization is the Devonian sea water affected from continental crust. 34S ve 18O are enriched when Devonian sea water, in continental crust, enters a hydrothermal cycle which is permanently heatened by granitic intrusion and in consequence of bacterial activities occured during this process. It dissolves and incorporates Ba, Sr, Pb, Cu and Zn during this cycle. Eventually, mineralization occured through impregnation of these elements into piling in parts sedimentation continued.

  12. Charlotte, N.C.'s Project L.I.F.T.: New Teaching Roles Create Culture of Excellence in High-Need Schools. An Opportunity Culture Case Study

    ERIC Educational Resources Information Center

    Han, Jiye Grace; Barrett, Sharon Kebschull

    2013-01-01

    This case study reports on the work of Denise Watts, who in 2011 was the newly named Project L.I.F.T. executive director and a Charlotte-Mecklenburg Schools zone superintendent. She approached Public Impact for help in meeting the new Project L.I.F.T. (Leadership and Investment for Transformation) goals. Facing urgent needs for real change, Watts…

  13. G.I. Joe Meets Barbie, Software Engineer Meets Caregiver: Males and Females in B.C.'s Public Schools and Beyond. BCTF Research Report.

    ERIC Educational Resources Information Center

    Schaefer, Anne C.

    Following a referral from the March 2000 Annual General Meeting of the British Columbia (B.C.) Teachers' Federation, the Spring 2000 Representative Assembly passed a motion that recommended research be collected, conducted, and disseminated on the current status of students in the province. This research report identifies current information on…

  14. Deficiencies of Proteins C, S and Antithrombin and Activated Protein C Resistance–Their Involvement in the Occurrence of Arterial Thromboses

    PubMed Central

    Popa, C

    2010-01-01

    Deficiencies of natural anticoagulants protein C, protein S, antithrombin and activated protein C resistance are components of inherited thrombophilia. Inherited thrombophilia was defined as a genetically determined tendency towards venous thromboembolism which characteristically occurs in young age (before 40 to 45 years) without apparent causes and tend to recur. In the recent years, there has been a lot of debate about the implication of these defects in arterial thromboses (peripheral artery disease, myocardial infarction, cerebral infarction). The screening for thrombophilia is recommended for young patients with spontaneous thromboses, arterial infarctions, family history of thromboses, personal history of recurrent abortions, with thrombosis of venous dural sinuses or strokes or myocardial infarctions, in patients with venous thrombosis at unusual sites, because the diagnosis of such a disease leads to a treatment that is lifesaving [1,2]. PMID:21254740

  15. The Bio-atmospheric N Cycle: A Story of Multiple Element Interactions, N, C, S, Atmospheric Chemistry and the Climate System

    NASA Astrophysics Data System (ADS)

    Holland, E. A.

    2003-12-01

    The bio-atmospheric N plays a key role in the climate system through regulation of atmospheric greenhouse concentrations, including nitrous oxide, carbon dioxide, methane, and tropospheric ozone, as well as impacting aerosol abundance. I will examine the evidence for including the full bio-atmospheric nitrogen cycle into earth system models. The most obvious is the impact of the bio-atmospheric nitrogen cycle on nitrous and nitric oxide emissions. Nitrogen deposition significantly impacts terrestrial carbon dioxide uptake, as well as influencing leaf level nitrogen concentrations that in turn impact stomatal conductance. The importance of this interaction has been recognized by the atmospheric chemistry community and a modeling project is underway to quantify and compare global estimates of N deposition, including ammonia(um) and NOy and its impact on the carbon cycle. Ammonia impacts sulfate aerosol abundance as well as reacting with nitrate form aerosols that act as cloud condensation nuclei to he potential to significantly impact the water cycle. The SRES emission projections and an accumulating body of evidence suggest that sulfur dioxide emissions will decline over the next century, while carbon and nitrogen emissions, carbon dioxide, methane, carbon monoxide, and VOCs, and NOx are all projected to continue to increase. The long-term goal is an Earth System model that allows examination of the complex interactions of biology, climate, atmospheric chemistry and humans.

  16. Charlotte, N.C.'s Project L.I.F.T.: One Teacher's View of Becoming a Paid Teacher-Leader. An Opportunity Culture Case Study

    ERIC Educational Resources Information Center

    Han, Jiye Grace; Barrett, Sharon Kebschull

    2013-01-01

    Romain Bertrand is a middle school math teacher and Opportunity Culture enthusiast. As the 2012-13 school year wound down, he was already thoroughly looking forward to the next--when he will become a multi-classroom leader at Ranson IB Middle School, taking accountability for the learning results of 700 students. At Ranson, a Project L.I.F.T.…

  17. An Investigation on the Relationship between the School Level of Funding and Performance at K.C.S.E. in Mumias District, Western Province, Kenya

    ERIC Educational Resources Information Center

    Sisungo, Z.; Kaberia, L.; Buhere, P.

    2014-01-01

    The Kenyan government has been spending between 20% to 40% of its revenue on education with the aim to improving access and quality. Much of these resources have been devoted towards establishment and procurement of school inputs such as classrooms, teachers and textbooks. This study investigated the effects of funding on performance in Mumias…

  18. A new approach for determining the volume of cerebral extracellular fluid and demonstration of its communication with c.s.f

    PubMed Central

    Friede, Reinhard L.; Hu, Kuo Hao

    1971-01-01

    1. A new technique is presented for determining the volume of extracellular space in bowfin (Amia calva) brain during in vitro incubation. It consists of solving simultaneous equations which are applied to determine the volume of extracellular space as well as intracellular marker concentration. This technique allows for a better insight into the redistribution of marker between incubation medium and extracellular space as well as between extracellular and intracellular space. 2. Na+, K+ and Cl- equilibrated within 10-15 min between incubation medium and extracellular space. There was no evidence of a homoeostatic mechanism controlling the concentration of these ions in the extracellular fluid, which appeared to be in equilibrium with cerebrospinal fluid. The extracellular spaces of these ions were identical: Na+, 23·4; K+, 23·3 and Cl-, 23·2%. 3. Sorbitol equilibrated with the extracellular fluid within 45 min and indicated an extracellular space of 22·6%, nearly identical with that for electrolytes. 4. Vastly different `spaces' were obtained for [3H]methoxy inulin, which equilibrated within 45 min with a 13% space and [14C]carboxyl inulin, which showed a 46% space value for only 30 min. The difference may be explained by marker decomposition. The 9% difference between the [3H]methoxy inulin and sorbitol spaces may be explained by a `packing' factor attributable to molecular size. PMID:5124573

  19. National Dam Safety Program. Mud Lock C&S Canal Dam (Inventory Number N.Y. 416) Oswego River Basin, Cayuga County, New York. Phase I Inspection Report,

    DTIC Science & Technology

    1981-09-14

    overtopping is not likely to result in failure of the dam. In any case, spillway dis- charges occurring during large storm events will cause flooding in...spillway capacity to the top of the wall is 34,392 cfs. This is assuming no tailwater effect caused by flooding streams down- stream of the dam. 5.4...the dam. In any case, spillway discharge during the peak fle%. will cause flooding in downstream areas regardless of an overtopping filure. Therefore

  20. Will the S.C.C.'s Decision on Physician-Assisted Death Apply to Persons Suffering from Severe Mental Illness?

    PubMed

    Walker-Renshaw, Barbara; Finley, Margot

    2016-02-01

    In this article, the authors address the question of whether the Supreme Court of Canada's decision in Carter v. Canada leaves open the possibility that persons with severe, treatment-refractory mental illness may lawfully seek a physician-assisted death. If so, how will health care providers distinguish between suicidal ideation and intent that is a symptom of the pathology of a treatable mental illness, on the one hand; and suicidal ideation and intent that is, perhaps, a capable and thoughtful response to a "grievous and irremediable" condition, on the other hand? Mental illness is the most common risk factor for suicide. If physician-assisted death becomes an accepted practice in mental health care, how will that be reconciled with the well-established impetus in mental health care to prevent suicide? The authors consider the competing ethical values of beneficence and promoting patient autonomy, in the context of the recovery movement in mental health care.

  1. Eye-Tracking Investigations Exploring How Students Learn Geology from Photographs and The Structural Setting of Hydrothermal Gold Deposits in the San Antonio Area, B.C.S., MX

    NASA Astrophysics Data System (ADS)

    Coyan, Joshua

    Geoscience educators commonly teach geology by projecting a photograph in front of the class. Geologic photographs often contain animals, people, and inanimate objects that help convey the scale of features in the photograph. Although scale items seem innocuous to instructors and other experts, the presence of such items is distracting and has a profound effect on student learning behavior. To evaluate how students visually interact with distracting scale items in photographs and to determine if cueing or signaling is an effective means to direct students to pertinent information, students were eye tracked while looking at geologically-rich photographs. Eye-tracking data revealed that learners primarily looked at the center of an image, focused on faces of both humans and animals if they were present, and repeatedly returned to looking at the scale item (distractor) for the duration an image was displayed. The presence of a distractor caused learners to look at less of an image than when a distractor was not present. Learners who received signaling tended to look at the distractor less, look at the geology more, and surveyed more of the photograph than learners who did not receive signaling. The San Antonio area in the southern part of the Baja California Peninsula is host to hydrothermal gold deposits. A field study, including drill-core analysis and detailed geologic mapping, was conducted to determine the types of mineralization present, the types of structures present, and the relationship between the two. This investigation revealed that two phases of mineralization have occurred in the area; the first is hydrothermal deposition of gold associated with sulfide deposits and the second is oxidation of sulfides to hematite, goethite, and jarosite. Mineralization varies as a function of depth, whereas sulfides occurring at depth, while minerals indicative of oxidation are limited to shallow depths. A structural analysis revealed that the oldest structures in the study area include low-grade to medium-grade metamorphic foliation and ductile mylonitic shear zones overprinted by brittle-ductile mylonitic fabrics, which were later overprinted by brittle deformation. Both primary and secondary mineralization in the area is restricted to the later brittle features. Alteration-bearing structures have an average NNW strike consistent with northeast-southwest-directed extension, whereas unaltered structures have an average NNE strike consistent with more recent northwest-southeast-directed extension.

  2. "The Trees of Knowledge and Life Growing Together" in the Educational Vision of C. S. Lewis: Why Medway and Stevens Are Almost Right about Enlightenment and Romantic Values in English

    ERIC Educational Resources Information Center

    Pike, Mark

    2012-01-01

    Peter Medway's paper "English and Enlightenment" ("Changing English," 2010) and David Stevens' response to it, "Critically Enlightened Romantic Values and English Pedagogy: A Response to Peter Medway" ("Changing English," 2011), address the relative merits of the quest for truth and the place of aesthetic…

  3. Late Quaternary Normal Faulting and Hanging Wall Basin Evolution of the Southwestern Rift Margin from Gravity and Geology, B.C.S., MX and Exploring the Influence of Text-Figure Format on Introductory Geology Learning

    ERIC Educational Resources Information Center

    Busch, Melanie M. D.

    2011-01-01

    An array of north-striking, left-stepping, active normal faults is situated along the southwestern margin of the Gulf of California. This normal fault system is the marginal fault system of the oblique-divergent plate boundary within the Gulf of California. To better understand the role of upper-crustal processes during development of an obliquely…

  4. Diverse stereocontrol effects induced by weakly coordinating anions. Stereospecific olefin polymerization pathways at archetypal C(s)- and C(1)-symmetric metallocenium catalysts using mono- and polynuclear halo-perfluoroarylmetalates as cocatalysts.

    PubMed

    Roberts, John A S; Chen, Ming-Chou; Seyam, Afif M; Li, Liting; Zuccaccia, Cristiano; Stahl, Nicholas G; Marks, Tobin J

    2007-10-24

    Counteranion effects on propylene polymerization rates and stereoselectivities are compared using Cs-symmetric Me2C(Cp)(Flu)ZrMe2 (1; Cp = C5H4,eta5-cyclopentadienyl; Flu = C13H8, eta5-fluorenyl) and C1-symmetric Me2Si(OHF)(CpR*)ZrMe2 (2; OHF = C13H16, eta5-octahydrofluorenyl; CpR* = eta5-3-(-)-menthylcyclopentadienyl) precatalysts activated with the mononuclear and polynuclear perfluoroarylborate, -aluminate, and -gallate cocatalysts/activators B(C6F5)3 (3), B(o-C6F5C6F4)3 (4), Al(C6F5)3 (5), Ph3C+B(C6F5)4- (6) Ph3C+FAl(o-C6F5C6F4)3- (7), Ga(C6F5)3 (8), and recently reported mono- and polymetallic trityl perfluoroarylhalometalates Ph3C+FB(C6F5)3- (9), Ph3C+FB(o-C6F5C6F4)3- (10), (Ph3C+)xFx[Al(C6F5)3]yx- (x = 1, y = 1, 11; x = 1, y = 2, 12; x = 2, y = 3, 13), Ph3C+(C6F5)3AlFAl(o-C6F5C6F4)3- (14), Ph3C+XAl(C6F5)3- (X = Cl, 15; X = Br, 16), and Ph3C+F[Ga(C6F5)3]2- (17). Temperature, propylene concentration, and solvent polarity dependence are surveyed in polymerizations catalyzed by 1 activated with cocatalysts 3-16 and with a 1:2 ratio of Ph3CCl and 5, and with a 1:2 ratio of Ph3CBr and 5, and by 2 activated with 3, 6, 7, 12, and 14. Remarkable stereocontrol with high activities is observed for 1 + 12 and 1 + 14. Polypropylene samples produced using C1-symmetric precatalyst 2 are subjected to microstructural analyses using stochastic models describing the relative contributions of enantiofacial misinsertion and backskip processes. A powerful technique is introduced for calculating interparametric correlation matrices for these nonlinear stochastic models. The collected results significantly extend what is known about ion-pairing effects in the case of Cs-symmetric precatalyst 1 and allow these findings to be applied to the case of C1-symmetric precatalyst 2 as an agent of isospecific propylene polymerization.

  5. Charlotte, N.C.'s Project L.I.F.T.: Ashley Park PreK-8 Launches Multi-Classroom Leadership and Blended Learning. An Opportunity Culture Case Study

    ERIC Educational Resources Information Center

    Barrett, Sharon Kebschull; Han, Jiye Grace

    2015-01-01

    Tonya Kales came to Ashley Park PreK-8 as its principal (2009-2013), and confronted a school at the end of its rope. Ashley Park was a beautiful facility, but there was no learning going on in the building, it was a chaotic environment for both kids and adults. It was a hostile environment--had adults that were totally incompetent in their…

  6. Late Quaternary Normal Faulting and Hanging Wall Basin Evolution of the Southwestern Rift Margin From Gravity and Geology, B.C.S., MX and Exploring the Influence of Text-Figure Format on Introductory Geology Learning

    NASA Astrophysics Data System (ADS)

    Busch, Melanie M. D.

    2011-12-01

    An array of north-striking, left-stepping, active normal faults is situated along the southwestern margin of the Gulf of California. This normal fault system is the marginal fault system of the oblique-divergent plate boundary within the Gulf of California. To better understand the role of upper-crustal processes during development of an obliquely rifted plate margin, gravity surveys were conducted across the normal-fault-bounded basins within the gulf-margin array and, along with optically stimulated luminescence dating of offset surfaces, fault-slip rates were estimated and fault patterns across basins were assessed, providing insight into sedimentary basin evolution. Additionally, detailed geologic and geomorphic maps were constructed along two faults within the system, leading to a more complete understanding of the role of individual normal faults within a larger array. These faults slip at a low rate (0.1--1 mm/yr) and have relatively shallow hanging wall basins (˜500--3000 m). Overall, the gulf-margin faults accommodate protracted, distributed deformation at a low rate and provide a minor contribution to overall rifting. Integrating figures with text can lead to greater science learning than when either medium is presented alone. Textbooks, composed of text and graphics, are a primary source of content in most geology classes. It is essential to understand how students approach learning from text and figures in textbook-style learning materials and how the arrangement of the text and figures influences their learning approach. Introductory geology students were eye tracked while learning from textbook-style materials composed of text and graphics. Eye fixation data showed that students spent less time examining the figure than the text, but the students who more frequently examined the figure tended to improve more from the pretest to the posttest. In general, students tended to examine the figure at natural breaks in the reading. Textbook-style materials should, therefore, be formatted to include a number of natural breaks so that learners can pause to inspect the figure without the risk of losing their place in the reading and to provide a chance to process the material in small chunks. Multimedia instructional materials should be designed to support the cognitive processes of the learner.

  7. Riemann-Hypothesis Millennium-Problem(MP) Physics Proof via CATEGORY-SEMANTICS(C-S)/F =C Aristotle SQUARE-of-OPPOSITION(SoO) DEduction-LOGIC DichotomY

    NASA Astrophysics Data System (ADS)

    Baez, Joao-Joan; Lapidaryus, Michelle; Siegel, Edward Carl-Ludwig

    2013-03-01

    Riemann-hypothesis physics-proof combines: Siegel-Antono®-Smith[AMS Joint Mtg.(2002)- Abs.973-03-126] digits on-average statistics HIll[Am. J. Math 123, 3, 887(1996)] logarithm-function's (1,0)- xed-point base =units =scale-invariance proven Newcomb [Am. J. Math. 4, 39(1881)]-Weyl[Goett. Nachr.(1914); Math. Ann.7, 313(1916)]-Benford[Proc. Am. Phil. Soc. 78, 4, 51(1938)]-law [Kac,Math. of Stat.-Reasoning(1955); Raimi, Sci. Am. 221, 109(1969)] algebraic-inversion to ONLY Bose-Einstein quantum-statistics(BEQS) with digit d = 0 gapFUL Bose-Einstein Condensation(BEC) insight that digits are quanta are bosons because bosons are and always were quanta are and always were digits, via Siegel-Baez category-semantics tabular list-format matrix truth-table analytics in Plato-Aristotle classic ''square-of-opposition'' : FUZZYICS =CATEGORYICS/Category-Semantics, with Goodkind Bose-Einstein Condensation (BEC) ABOVE ground-state with/and Rayleigh(cut-limit of ''short-cut method''1870)-Polya(1922)-''Anderson''(1958) localization [Doyle and Snell,Random-Walks and Electrical-Networks, MAA(1981)-p.99-100!!!] in Brillouin[Wave-Propagation in Periodic-Structures(1946) Dover(1922)]-Hubbard-Beeby[J.Phys.C(1967)] Siegel[J.Nonxline-Sol.40,453(1980)] generalized-disorder collective-boson negative-dispersion mode-softening universality-principle(G...P) first use of the ``square-of-opposition'' in physics since Plato and Aristote!!!

  8. Serum Apoptosis Markers Related to Liver Damage in Chronic Hepatitis C: sFas as a Marker of Advanced Fibrosis in Children and Adults While M30 of Severe Steatosis Only in Children

    PubMed Central

    Valva, Pamela; Casciato, Paola; Lezama, Carol; Galoppo, Marcela; Gadano, Adrián; Galdame, Omar; Galoppo, María Cristina; Mullen, Eduardo; De Matteo, Elena; Preciado, María Victoria

    2013-01-01

    Background Liver biopsy represents the gold standard for evaluating damage and progression in patients with chronic hepatitis C (CHC); however, developing noninvasive tests that can predict liver injury represents a growing medical need. Considering that hepatocyte apoptosis plays a role in CHC pathogenesis; the aim of our study was to evaluate the presence of different apoptosis markers that correlate with liver injury in a cohort of pediatric and adult patients with CHC. Methods Liver biopsies and concomitant serum samples from 22 pediatric and 22 adult patients with CHC were analyzed. Histological parameters were evaluated. In serum samples soluble Fas (sFas), caspase activity and caspase-generated neoepitope of the CK-18 proteolytic fragment (M30) were measured. Results sFas was associated with fibrosis severity in pediatric (significant fibrosis p = 0.03, advanced fibrosis p = 0.01) and adult patients (advanced fibrosis p = 0.02). M30 levels were elevated in pediatric patients with severe steatosis (p = 0.01) while in adults no relation with any histological variable was observed. Caspase activity levels were higher in pediatric samples with significant fibrosis (p = 0.03) and they were associated with hepatitis severity (p = 0.04) in adult patients. The diagnostic accuracy evaluation demonstrated only a good performance for sFas to evaluate advanced fibrosis both in children (AUROC: 0.812) and adults (AUROC: 0.800) as well as for M30 to determine steatosis severity in children (AUROC: 0.833). Conclusions Serum sFas could be considered a possible marker of advanced fibrosis both in pediatric and adult patient with CHC as well as M30 might be a good predictor of steatosis severity in children. PMID:23326448

  9. Gold deposition by sulfidation of ferrous Fe in the lacustrine sediments of the Pueblo Viejo district (Dominican Republic): The effect of Fe-C-S diagenesis on later hydrothermal mineralization in a Maar-Diatreme complex

    USGS Publications Warehouse

    Kettler, R.M.; Rye, R.O.; Kesler, S.E.; Meyers, P.A.; Polanco, J.; Russell, N.

    1992-01-01

    The Pueblo Viejo district, located in the Cordillera Central of the Dominican Republic, contains large Au-Ag deposits associated with acid-sulfate alteration within spilites, conglomerates and carbonaceous sedimentary rocks that were deposited in a maar-diatreme complex. Much of the Au mineralization occurs in pyritic, carbonaceous siltstones of the Pueblo Viejo Maar-Diatreme Member of the Cretaceous Los Ranchos Formation. Pyrite is the only Fe-bearing phase in mineralized rock, whereas siderite is the dominant Fe-bearing phase in siltstones distal to mineralization. Disseminated pyrite occurs as framboids, cubes, pyritohedra, concretions and cement. Early framboids occur throughout the district. Au occurs as inclusions in later non-framboid disseminated pyrite (NFDP); an occurrence that is interpreted to be indicative of contemporaneous deposition. Pyrite framboids exhibit a wide range of ??34Scdt-values (-17.5 to +4.8???) and are interpreted to have formed during biogenic reduction of pore-water sulfate. The NFDP yield restricted ??34Scdt-values ( x ?? = -5.2???, s = ??2.4???, n = 43) similar to those obtained from later vein pyrite ( x ?? = -6.4???, s = ??1.5???, n = 12). Alunite and barite have ??34S-values ranging from +18.8 to +21.6???. The interpretation that the NFDP, vein pyrite, alunite and barite, and possibly even the framboidal pyrite share a common source of igneous sulfur is supported by the ??34S data. Siderite occurs as concretions and cement, contains abundant Mg (Fe0.75Mg0.19Mn0.03Ca0.02CO3) and has ??13Cpdb- and ??18Osmow-values ranging from -2.5 to +1.1%. and +14.6 to +19.5???, respectively. These data are consistent with the interpretation that the siderite formed in lacustrine sediments and that the carbonate in the siderite is probably methanogenic, although contributions from oxidation of organic matter during biogenic sulfate reduction, thermal decarboxylation of organic matter, or magmatic vapor cannot be ruled out. Disseminated Au mineralization in the sedimentary rocks formed when a hydrothermal fluid encountered reactive Fe2+ in diagenetic siderite. The ensuing pyrite deposition consumed H2S and destabilized the Au (HS)-2 complex, leading to precipitation of Au. The capacity of the sedimentary rocks to consume H2S and precipitate Au was controlled by the amount of non-pyrite Fe present as siderite. The abundance of siderite was controlled by the extent of pyrite formation during diagenesis. ?? 1992.

  10. A Descriptive Study of U.S.C.'s (University of South Carolina) Appeal to Academically Talented Students. University of South Carolina, Academic Planning Office, Research Notes, Number 31-76.

    ERIC Educational Resources Information Center

    Fidler, Paul; Bucy, Eileen McGinity

    This paper presents a study determining the extent of the University of South Carolina's (USC's) appeal to academically talented students and defining potential areas of difficulty in recruiting such students. The sample included all of the 1974 Semi-Finalists from South Carolina in the National Merit Scholarship Competition, as well as the 58…

  11. Total Syntheses and Initial Evaluation of [Ψ[C(=S)NH]Tpg4]vancomycin, [Ψ[C(=NH)NH]Tpg4]vancomycin, [Ψ[CH2NH]Tpg4]vancomycin and their (4-Chlorobiphenyl)methyl Derivatives: Synergistic Binding Pocket and Peripheral Modifications for the Glycopeptide Antibiotics

    PubMed Central

    Okano, Akinori; Nakayama, Atsushi; Wu, Kejia; Lindsey, Erick A.; Schammel, Alex W.; Feng, Yiqing; Collins, Karen C.

    2015-01-01

    Full details of studies are disclosed on the total synthesis of binding pocket analogues of vancomycin, bearing the peripheral L-vancosaminyl-1,2-D-glucosyl disaccharide, that contain changes to a key single atom in the residue 4 amide (residue 4 carbonyl O → S, NH, H2) designed to directly address the underlying molecular basis of resistance to vancomycin. Also disclosed are studies piloting the late stage transformations conducted on the synthetically more accessible C-terminus hydroxymethyl aglycon derivatives and full details of the peripheral chlorobiphenyl functionalization of all the binding pocket modified vancomycin analogues designed for dual D-Ala-D-Ala/D-Ala-D-Lac binding are reported. Their collective assessment indicate that combined binding pocket and chlorobiphenyl peripherally modified analogues exhibit a remarkable spectrum of antimicrobial activity (VSSA, MRSA, VanA and VanB VRE) and impressive potencies against both vancomycin-sensitive and vancomycin-resistant bacteria (MICs = 0.06–0.005 μg/mL and 0.5–0.06 μg/mL for the amidine and methylene analogues, respectively) and likely benefit from two independent and synergistic mechanisms of action, only one of which is dependent on D-Ala-D-Ala/D-Ala-D-Lac binding. Such analogues are likely to display especially durable antibiotic activity not prone to rapidly acquired clinical resistance. PMID:25750995

  12. Platinum-mediated coupling of methane and small nucleophiles (H{sub 2}O, PH{sub 3}, H{sub 2}S, CH{sub 3}NH{sub 2}) as a model for C-N, C-O, C-P, and C-S bond formation in the gas phase

    SciTech Connect

    Broenstrup, M.; Schroeder, D.; Schwarz, H.

    1999-05-10

    The reactions of Pt{sup +} and PtCH{sub 2}{sup +} with the nucleophiles H{sub 2}O, PH{sub 3}, H{sub 2}S, HCl, CH{sub 3}NH{sub 2}, and CH{sub 3}OH are studied by Fourier transform-ion cyclotron resonance (FT-ICR) mass spectrometry. In the reactions of PtCH{sub 2}{sup +}, carbon-heteroatom bond formation can be accomplished for all substrates except CH{sub 3}OH and HCl. The reaction of PtCH{sub 2}{sup +} with two molecules of water yields Pt(CO)(H{sub 2}O){sup +} and constitutes a gas-phase model for the platinum-mediated generation of water gas according to CH{sub 4} + H{sub 2}O {r_arrow} CO + 3H{sub 2}. In the reactions with PH{sub 3} and H{sub 2}S, carbon-phosphorus and carbon-sulfur bond formation to PtCPH{sup +} and PtCS{sup +} competes with demethanation and dehydrogenation of the substrates to yield PtS{sub n}{sup +} (n = 1--4) and PtP{sub n}H{sub m}{sup +} (n = 1--6; m = 0--3) compounds, respectively. For organic nucleophiles such as CH{sub 3}NH{sub 2} and CH{sub 3}OH, C-N and C-O coupling is much less efficient than platinum-mediated C-H bond activation of the substrates.

  13. Study of the genus Cephennium Müler & Kunze, 1822 (Coleoptera, Staphylinidae, Scydmaeninae) from the Balkan Peninsula. Part II. New species of the subgenus Cephennium s. str.

    PubMed

    Stevanović, Miroslav

    2014-07-18

    Twelve new species of the genus Cephennium Müler & Kunze, 1822 are described: C. (s. str.) irenae sp. n. (from Serbia, Bosnia and Herzegovina, and Montenegro); C. (s. str.) sladjanae sp. n. and C. (s. str.) fallax sp. n. (both from Serbia and Bulgaria); C. (s. str.) viti sp. n. (from Serbia, Macedonia, Greece and Bulgaria); C. (s. str.) fairchildi sp. n., C. (s. str.) ivanjicense sp. n., C. (s. str.) serbicum sp. n. and C. (s. str.) remisianum sp. n. (all from Serbia); C. (s. str.) assingi sp. n. and C. (s. str.) angelinii sp. n. (both from Greece); C. (s. str.) mlejneki sp. n. (from Montenegro) and C. (s. str.) vitoshae sp. n. (from Bulgaria). Aedeagi and male protibiae of all species are illustrated. Cephennium (s. str.) bosnicum Ganglbauer, 1899 is redescribed and its lectotype is designated.

  14. A Decision Criteria to Select an Associative-Memory Organization That Minimizes the Execution Time of a Mix of Associative-Search Operations

    DTIC Science & Technology

    1993-06-01

    s )) = Op (C(s), db(s))" (26) Equation (27) defines OP. Brt(JxBR’T()-,BR as the complement of Op,. Op,(C(s), db(s)) = 0p,(C(s), db(s))’" (27) The...9.5 tf=13.0 t= 11.0 tf= 12.8 128 words tr-13.5 tf=16.9 t,=14.3 t(=17.3 t,=16.5 tf=22.0 Op,,(C(s), db( s )), Op .<(C(s), db( s )), Op ,(C(s), db( s )), Op >(C...OP.(C(s), db( s )), Op •(C(s), db( s )), Op <(C(s), db( s )), Op >(C(s), db( s )), Op .(C(s), db( s

  15. The Effect of Load Factor on Aircraft Handling Qualities.

    DTIC Science & Technology

    1984-08-10

    C(S + 9) * SS 450 C8 (13) = C(S + 14) * CS * C(S + 9) + C(S * 13)) * S A * CA * CS * 8) * SS 466 CB(14) = C(S II) * CA + C(S + 6) * SA 478 CB(15> - C...SPRINT "CYP" ; :OKE 36,43 PRINT C(S + 3); POKE 36,62 PRINT CP(4) H60 PORE 36,30 PRINT "CYR" POKE 36,43 PRINT C(S + 4); POKE 36,62 PRINT C8 (5) 870 POKE...36,62 : PRINT CB(3) 890 POKE 36,30 * PRINT "CLB" * POKE 36,43 * PRINT C(S + 5); : POKE 36,62 * PRINT C8 (6) 988 POKE 36,30 : PRINT "CLP" * POKE 36,43

  16. The 13th order resonance from Navy tracking on a diademe 2 fragment

    NASA Technical Reports Server (NTRS)

    Wagner, C. A.

    1974-01-01

    A strong constraint on 13th order (odd degree) terms in the geopotential has been derived from Navy tracking on a DIADEME 2 fragment (1967-14F). This object (perigee height: 580 km, orbit inclination: 38.9 deg) is presently decaying slowly through perfect commensurability with these terms. The resonance forces will increase its inclination by 0.02 deg when the passage is complete by late 1974. The constraint (lumped harmonics), derived by adjustment of a pair of harmonic coefficients to the Navy inclination data (principally) is: 10 to the 9th power (14.8 + or - 0.8, 48.3 + or - 0.7) = 0.023(C,S)13,13 -0.172(C,S)15,13 0.505(C,S)17,13 - 0.884(C,S)19,13 + (C,S)21,13 0.673(C,S)23,13 0.099(C,S)25,13 0.295(C,S)27,13 -0.279(C,S)29,13 0.018(C,S)31,13 + There should be a significant contribution to this result from terms as high as 29th degree. But current geopotential solutions (for 13th order terms) to this degree are about 20% in error when judged by this independent data.

  17. Endometrial cancer implanted within a cesarean section scar.

    PubMed

    Baba, Tsukasa; Mandai, Masaki; Yamanishi, Yukio; Suzuki, Ayako; Kang, Hyun Sook; Konishi, Ikuo

    2011-03-01

    Several reports have documented adenocarcinoma arising from endometriotic implants within cesarean section (C-S) scars on the serosal surface of the uterus; however, endometrial cancer invading the C-S scar from the uterine cavity has not been described. We report a case of a grade 1 endometrioid adenocarcinoma 'drop' lesion invading a previous C-S scar with resultant cervical stromal invasion. Using both MR images and a thorough review of the pathology, the tumor at the C-S scar was determined to be an implant derived from a primary lesion at the uterine fundus. With increases in the incidence of both endometrial cancer and births by C-S, it is likely we will encounter more cases of iatrogenic implants of endometrial cancers in C-S scars.

  18. 77 FR 2606 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-18

    ..., Valle, Colombia; c/o RAMIREZ ABADIA Y CIA. S.C.S., Cali, Colombia; Calle 9 No. 39-65, Cali, Colombia.... DE GIL Y CIA. S.C.S.; c/o DROBLAM S.A.; DOB 24 Aug 1978; Passport 67020296 (Colombia) Cedula No... AMPARO R. DE GIL Y CIA. S.C.S., Cali, Colombia; c/o DROBLAM S.A., Cali, Colombia; DOB 21 Feb...

  19. Thallium Mercury Laser Development

    DTIC Science & Technology

    1981-01-01

    THALLIUM MERCURY LASER DEVELOPMENT C. S. Liu and D. W. Feldman FINAL REPORT (PHASE III) (Period between Feb. 1, 1980 and Jan. 31, 1981) 0 Contract No...Pittsburgh, Pennsylvania 15235 Approved for public release;IDistribution Unlimited 1/i;THALLIUM MERCURY LASER DEVELOPMENT * , , IS C. S./Liu tRD. W /eldman...9 ’ t4 THALLIUM MERCURY LASER DEVELOPMENT C. S. Liu and D. W. Feldman Westinghouse R&D Center Pittsburgh, Pennsylvania 15235 1

  20. X-ray photoelectron spectroscopic investigation of nanocrystalline calcium silicate hydrates synthesised by reactive milling

    SciTech Connect

    Black, Leon . E-mail: l.black@shu.ac.uk; Garbev, Krassimir; Beuchle, Guenter; Stemmermann, Peter; Schild, Dieter

    2006-06-15

    X-ray photoelectron spectroscopy (XPS) has been used to analyse a series of mechanochemically synthesised, nanocrystalline calcium silicate hydrates (C-S-H). The samples, with Ca/Si ratios of 0.2 to 1.5, showed structural features of C-S-H(I). XPS analysis revealed changes in the extent of silicate polymerisation. Si 2p, Ca 2p and O 1s spectra showed that, unlike for the crystalline calcium silicate hydrate phases studied previously, there was no evidence of silicate sheets (Q{sup 3}) at low Ca/Si ratios. Si 2p and O 1s spectra indicated silicate depolymerisation, expressed by decreasing silicate chain length, with increasing C/S. In all spectra, peak narrowing was observed with increasing Ca/Si, indicating increased structural ordering. The rapid changes of the slope of FWHM of Si 2p, {delta} {sub Ca-Si} and {delta} {sub NBO-BO} as function of C/S ratio indicated a possible miscibility gap in the C-S-H-solid solution series between C/S 5/6 and 1. The modified Auger parameter ({alpha}') of nanocrystalline C-S-H decreased with increasing silicate polymerisation, a trend already observed studying crystalline C-S-H. Absolute values of {alpha}' were shifted about - 0.7 eV with respect to crystalline phases of equal C/S ratio, due to reduced crystallinity.

  1. The Cephenniini of China. VII. New species and new records of Cephennodes Reitter of Shaanxi, Gansu and Sichuan (Coleoptera: Staphylinidae: Scydmaeninae).

    PubMed

    Jałoszyński, Paweł

    2015-10-23

    Nine new Chinese species of Cephennodes are described: C. (s. str.) intricatus sp. n. (Gansu), C. (s. str.) cryptointricatus sp. n. (Gansu), C. (s. str.) monofoveatus sp. n. (Shaanxi), C. (s. str.) pinnapes sp. n. (Sichuan), C. (s. str.) elegantissimus sp. n. (Sichuan), C. (s. str.) palpalis sp. n. (Gansu), C. (Fusionodes) corpulentus sp. n. (Sichuan), C. (Fusionodes) gutta sp. n. (Shaanxi) and C. (Fusionodes) medusa sp. n. (Sichuan). Cephennodes elegantissimus and C. palpalis are not placed in any species group within Cephennodes, while the remaining new taxa belong to the excavatus group (C. intricatus and C. cryptointricatus), the taurus group (C. monofoveatus), the inflatipes group (C. pinnapes), the graeseri group (C. gutta and C. medusa) and the newly established serratus group (C. corpulentus). Additionally, new records of previously described species are given: C. (s. str.) subcaudatus Jałoszyński (Shaanxi), C. (s. str.) parabdominalis Jałoszyński (Shaanxi) and C. (s. str.) pteroscapus Jałoszyński (Sichuan).

  2. Thermodynamics of water confined in porous calcium-silicate-hydrates.

    PubMed

    Bonnaud, P A; Ji, Q; Coasne, B; Pellenq, R J-M; Van Vliet, K J

    2012-08-07

    Water within pores of cementitious materials plays a crucial role in the damage processes of cement pastes, particularly in the binding material comprising calcium-silicate-hydrates (C-S-H). Here, we employed Grand Canonical Monte Carlo simulations to investigate the properties of water confined at ambient temperature within and between C-S-H nanoparticles or "grains" as a function of the relative humidity (%RH). We address the effect of water on the cohesion of cement pastes by computing fluid internal pressures within and between grains as a function of %RH and intergranular separation distance, from 1 to 10 Å. We found that, within a C-S-H grain and between C-S-H grains, pores are completely filled with water for %RH larger than 20%. While the cohesion of the cement paste is mainly driven by the calcium ions in the C-S-H, water facilitates a disjoining behavior inside a C-S-H grain. Between C-S-H grains, confined water diminishes or enhances the cohesion of the material depending on the intergranular distance. At very low %RH, the loss of water increases the cohesion within a C-S-H grain and reduces the cohesion between C-S-H grains. These findings provide insights into the behavior of C-S-H in dry or high-temperature environments, with a loss of cohesion between C-S-H grains due to the loss of water content. Such quantification provides the necessary baseline to understand cement paste damaging upon extreme thermal, mechanical, and salt-rich environments.

  3. 75 FR 27118 - Additional Designations, Foreign Narcotics Kingpin Designation Act

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-13

    ...); (INDIVIDUAL) 3. JIMENEZ URREGO, Blanca Virginia, c/o JUAN SEBASTIAN Y CAMILA ANDREA JIMENEZ RAMIREZ Y CIA S.C... INTEGRADOS LTDA, Bogota, Colombia; c/o JUAN SEBASTIAN Y CAMILA ANDREA JIMENEZ RAMIREZ Y CIA S.C.S., Bogota... RAMIREZ Y CIA S.C.S., Bogota, Colombia; DOB 28 Jan 1969; Citizen Colombia; Cedula No. 65552011...

  4. General equation for size nanocharacterization of the core-shell nanoparticles by X-ray photoelectron spectroscopy.

    PubMed

    Gillet, Jean-Numa; Meunier, Michel

    2005-05-12

    Nanocharacterization is essential for nanoengineering of new types of core-shell (c-s) nanoparticles, which can be used to design new devices for photonics, electronics, catalysis, medicine, etc. X-ray photoelectron spectroscopy (XPS) has been widely used to study the elemental composition of the c-s nanoparticles. However, the physical and chemical properties of a c-s nanoparticle dramatically depend on the sizes of its core and shell. We therefore propose a general equation for the XPS intensity of a c-s nanoparticle, which is based on an analytical model. With this equation, XPS can now also be used for nanocharacterization of the core and shell sizes of the c-s nanoparticles (with a diameter smaller than or equal to the XPS probing depth of approximately 10 nm). To validate the new equation with experimental XPS data, we first determine the average shell thickness of a group of c-s nanoparticles by comparing the XPS intensity of reference bare cores to that of the c-s nanoparticles. Then we study the growth kinetics of the cores and shells of another group of c-s nanoparticles where the shells are obtained by oxidation.

  5. Mesoscopic packing of disk-like building blocks in calcium silicate hydrate

    PubMed Central

    Yu, Zechuan; Zhou, Ao; Lau, Denvid

    2016-01-01

    At 100-nanometer length scale, the mesoscopic structure of calcium silicate hydrate (C-S-H) plays a critical role in determining the macroscopic material properties, such as porosity. In order to explore the mesoscopic structure of C-S-H, we employ two effective techniques, nanoindentation test and molecular dynamics simulation. Grid nanoindentation tests find different porosity of C-S-H in cement paste specimens prepared at varied water-to-cement (w/c) ratios. The w/c-ratio-induced porosity difference can be ascribed to the aspect ratio (diameter-to-thickness ratio) of disk-like C-S-H building blocks. The molecular dynamics simulation, with a mesoscopic C-S-H model, reveals 3 typical packing patterns and relates the packing density to the aspect ratio. Illustrated with disk-like C-S-H building blocks, this study provides a description of C-S-H structures in complement to spherical-particle C-S-H models at the sub-micron scale. PMID:27845376

  6. Chiari Malformation: Treatment

    MedlinePlus

    ... endorse any doctors, procedures, or products. © 2012 C&S Patient Education Foundation, ® Treatment Options Patients evaluated for Chiari-like ... when there is a significant syrinx © 2012 C&S Patient Education Foundation, ® This presentation is for informational purposes, consult ...

  7. Development of an Adaptive Vertical Coordinate Capability for Community Ocean Models

    DTIC Science & Technology

    2002-09-30

    the thermohaline depth h_c. The s-coordinate has the simple, infinitely 1 continuous, functional form: z = zeta(1+s) + h_c s + (h-h_c)C(s), where...circulation patern of cold and warm eddies detached from the western boundary current. The separation latitude of the boundary curent shifted south of the

  8. Developing Consumer/Survivor/Recovering Voice and Its Impact on Services and Research: Our Experience with the SAMHSA Women, Co-Occurring Disorders and Violence Study

    ERIC Educational Resources Information Center

    Mockus, Susan; Mars, Laura Cinq; Ovard, Dorothy Guazzo; Mazelis, Ruta; Bjelajac, Paula; Grady, Janice; LaClair, Christine; Livingston, Cardenia; Slavin, Sharon; Williams, Susan; McKinney, Jacki

    2005-01-01

    Integrating consumer/survivor/recovering (C/S/R) women in the Substance Abuse and Mental Health Services Administration's Women, Co-Occurring Disorders and Violence Study involved both struggles and growth. The C/S/R women and all of our professional allies, both individually and collectively, greatly enhanced the study by overcoming what earlier…

  9. Moderate- and Large- Deviation Probabilities in Actuarial Risk Theory,

    DTIC Science & Technology

    1988-06-01

    Introduction to the Theory of Large Deviations, Springer-Verlag, New York. Thorin, 0. (1982), Probabilities of ruin, Scand. Actuar . Jour. 65-102. 25 *% 0 I S 0 S 3 9 I bJ\\~ S S I’ C..., S L2JI1C S ~

  10. Pentachlorophenol Hydroxylase: Analysis of Catalytic Abilities and Evolution of a Better Enzyme

    DTIC Science & Technology

    2004-01-19

    391, 288-291. 4 Xun, L.; Orser, C. S. "Purification and properties of pentachlorophenol hydroxylase, a flavoprotein from Flavobacterium sp. Strain...pentachlorophenol by a Flavobacterium pentachlorophenol hydroxylase." J. Bacteriol. 1992, 174, 5745-5747. 6 Orser, C. S.; Lange, C. C. "Molecular analysis of

  11. A comparison of chitosan-silica and sodium starch glycolate as disintegrants for spheronized extruded microcrystalline cellulose pellets.

    PubMed

    Goyanes, Alvaro; Souto, Consuelo; Martínez-Pacheco, Ramón

    2011-07-01

    Chitosan-silica coprecipitate (C-S) has recently been proposed as a tablet disintegrant. In this study we compared it with a 1:1 physical mixture of chitosan and silica (C/S) at the same composition as the coprecipitate, and with the widely used commercial disintegrant sodium starch glycolate (SSG), as regards to its behavior in spheronized extruded pellets of microcrystalline cellulose (MCC) containing hydrochlorothiazide as a typical poorly water-soluble drug. In all three cases, possible synergism between the disintegrant (0-5%) and sorbitol (0-50%) was also evaluated. All the formulations examined exhibited appropriate morphology and had satisfactory mechanical and flow properties. Drug release depended mainly on sorbitol content, however C-S accelerated drug release at all sorbitol levels (the fastest release was from 50% sorbitol pellets with C-S, which disintegrated), whereas C/S did not vary drug release from pellets, and SSG depressed drug release, especially from 50% sorbitol pellets.

  12. Fourier Transform Interferometry

    DTIC Science & Technology

    2009-06-18

    Q1 = £ 2 [A(C, S) cos C + B(C, S) sin C] (A-10) or, using (A-4) and remembering that Q2 = 0, G(ao,po)=[A(C,S) cosC +B(C,S)sinC] , (A-11) where A(C,S) = 2J...Csin 2po and w=-Ssinpo and expanding the cosine, we have P= r sin 2 PO[A(u,w) cosC +B(u,w)sinC] ,(C-10) where A(u, w) 2J1 cos( 1i ur 2 IJ0 (wr)r dr ,and...Abstract iii Acknowledgments v List of Illustrations ix List of Symbols Used xi 1. INTRODUCTION 1 2 . PRINCIPLE OF OPERATION 3 3. INHERENT LIMITATIONS 7 3.1

  13. A realistic molecular model of cement hydrates

    PubMed Central

    Pellenq, Roland J.-M.; Kushima, Akihiro; Shahsavari, Rouzbeh; Van Vliet, Krystyn J.; Buehler, Markus J.; Yip, Sidney; Ulm, Franz-Josef

    2009-01-01

    Despite decades of studies of calcium-silicate-hydrate (C-S-H), the structurally complex binder phase of concrete, the interplay between chemical composition and density remains essentially unexplored. Together these characteristics of C-S-H define and modulate the physical and mechanical properties of this “liquid stone” gel phase. With the recent determination of the calcium/silicon (C/S = 1.7) ratio and the density of the C-S-H particle (2.6 g/cm3) by neutron scattering measurements, there is new urgency to the challenge of explaining these essential properties. Here we propose a molecular model of C-S-H based on a bottom-up atomistic simulation approach that considers only the chemical specificity of the system as the overriding constraint. By allowing for short silica chains distributed as monomers, dimers, and pentamers, this C-S-H archetype of a molecular description of interacting CaO, SiO2, and H2O units provides not only realistic values of the C/S ratio and the density computed by grand canonical Monte Carlo simulation of water adsorption at 300 K. The model, with a chemical composition of (CaO)1.65(SiO2)(H2O)1.75, also predicts other essential structural features and fundamental physical properties amenable to experimental validation, which suggest that the C-S-H gel structure includes both glass-like short-range order and crystalline features of the mineral tobermorite. Additionally, we probe the mechanical stiffness, strength, and hydrolytic shear response of our molecular model, as compared to experimentally measured properties of C-S-H. The latter results illustrate the prospect of treating cement on equal footing with metals and ceramics in the current application of mechanism-based models and multiscale simulations to study inelastic deformation and cracking. PMID:19805265

  14. A realistic molecular model of cement hydrates.

    PubMed

    Pellenq, Roland J-M; Kushima, Akihiro; Shahsavari, Rouzbeh; Van Vliet, Krystyn J; Buehler, Markus J; Yip, Sidney; Ulm, Franz-Josef

    2009-09-22

    Despite decades of studies of calcium-silicate-hydrate (C-S-H), the structurally complex binder phase of concrete, the interplay between chemical composition and density remains essentially unexplored. Together these characteristics of C-S-H define and modulate the physical and mechanical properties of this "liquid stone" gel phase. With the recent determination of the calcium/silicon (C/S = 1.7) ratio and the density of the C-S-H particle (2.6 g/cm(3)) by neutron scattering measurements, there is new urgency to the challenge of explaining these essential properties. Here we propose a molecular model of C-S-H based on a bottom-up atomistic simulation approach that considers only the chemical specificity of the system as the overriding constraint. By allowing for short silica chains distributed as monomers, dimers, and pentamers, this C-S-H archetype of a molecular description of interacting CaO, SiO2, and H2O units provides not only realistic values of the C/S ratio and the density computed by grand canonical Monte Carlo simulation of water adsorption at 300 K. The model, with a chemical composition of (CaO)(1.65)(SiO2)(H2O)(1.75), also predicts other essential structural features and fundamental physical properties amenable to experimental validation, which suggest that the C-S-H gel structure includes both glass-like short-range order and crystalline features of the mineral tobermorite. Additionally, we probe the mechanical stiffness, strength, and hydrolytic shear response of our molecular model, as compared to experimentally measured properties of C-S-H. The latter results illustrate the prospect of treating cement on equal footing with metals and ceramics in the current application of mechanism-based models and multiscale simulations to study inelastic deformation and cracking.

  15. Workshop on ’Recent Progress in Surface and Volume Scattering’ Held in Madrid, Spain on 14-16 September 1988

    DTIC Science & Technology

    1988-09-16

    September 1988 D 130!U ON ST A IDstiuion -- tlmed Sponsored by: European Research Office of the US Army, C.S.I.C. and Sociedad Espaflola de Optica. A...Sponsored by: J>I~t CdesEuropean Research Office of the US Army, A.’ ’ ;~I IO rjC.S.I.C. and Sociedad Espafiola de Optica. INTERNATIONAL WORKSHOP ON...Office of the US Army and Sociedad Espafiola de Optica. Organizer: M. Nieto-Vesperinas, Instituto de Optica, C.S.I.C., Spain. Programme committee: J. C

  16. A Case of Type 2 Youssef's Syndrome following Caesarean Section for Placenta Previa Totalis

    PubMed Central

    Obuz, Funda

    2016-01-01

    Vesicouterine fistula is a rare type of urogenital fistulas. It is most commonly observed after cesarean section (C/S) due to iatrogenic reasons. In this article, a case of a vesicouterine fistula which developed after C/S operation is presented. This was the patient's second C/S and this time placenta previa totalis was the primary pathology. Since it is a rare complication, we found it interesting, and, in this article, this clinical problem was discussed with details about diagnosis and treatment in light of the literature. PMID:27803827

  17. Conquer Chiari

    MedlinePlus

    ... Efforts ABOUT US C&S Patient Education Foundation Mission History & Accomplishments Team Financial Disclosure Forms (990's) Get Involved Contact Us Conquer Chiari Home Pediatric Chiari Research Center Walk Across America New! CCRC finds Chiari Clues in Skull and ...

  18. 12 CFR 560.31 - Election regarding categorization of loans or investments and related calculations.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...) If a loan or other investment is authorized under more than one section of the HOLA, as amended, or... with HOLA section 5(c)'s investment limitations only to the extent that funds have been advanced...

  19. 77 FR 74736 - Notice of Application for Approval of Discontinuance or Modification of a Railroad Signal System

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-17

    ... docket number FRA-2012-0087. Applicant: Norfolk Southern Corporation, Mr. Brian Sykes, Chief Engineer C&S... as practicable. Anyone is able to search the electronic form of any written communications...

  20. 28 CFR 34.1 - Purpose and applicability.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) (A) and (B) of the Juvenile Justice and Delinquency Prevention Act of 1974, as amended (42 U.S.C...'s designee, under part C—National Programs, of the Juvenile Justice and Delinquency Prevention...

  1. 28 CFR 34.1 - Purpose and applicability.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) (A) and (B) of the Juvenile Justice and Delinquency Prevention Act of 1974, as amended (42 U.S.C...'s designee, under part C—National Programs, of the Juvenile Justice and Delinquency Prevention...

  2. 28 CFR 34.1 - Purpose and applicability.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) (A) and (B) of the Juvenile Justice and Delinquency Prevention Act of 1974, as amended (42 U.S.C...'s designee, under part C—National Programs, of the Juvenile Justice and Delinquency Prevention...

  3. 28 CFR 34.1 - Purpose and applicability.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) (A) and (B) of the Juvenile Justice and Delinquency Prevention Act of 1974, as amended (42 U.S.C...'s designee, under part C—National Programs, of the Juvenile Justice and Delinquency Prevention...

  4. 12 CFR 560.31 - Election regarding categorization of loans or investments and related calculations.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...) If a loan or other investment is authorized under more than one section of the HOLA, as amended, or... with HOLA section 5(c)'s investment limitations only to the extent that funds have been advanced...

  5. The Copper-nicotinamide complex: sustainable applications in coupling and cycloaddition reactions

    EPA Science Inventory

    Crystalline copper (II)-nicotinamide complex, synthesized via simple mixing of copper chloride and nicotinamide solution at room temperature, catalyzes the C-S, C-N bond forming and cycloaddition reactions under a variety of sustainable reaction conditions.

  6. Fracture toughness of calcium-silicate-hydrate from molecular dynamics simulations

    NASA Astrophysics Data System (ADS)

    Bauchy, M.; Laubie, H.; Abdolhosseini Qomi, M. J.; Hoover, C. G.; Ulm, F.-J.; Pellenq, R. J.-M.

    2015-07-01

    Cement is the most widely used manufacturing material in the world and improving its toughness would allow for the design of slender infrastructure, requiring less material. To this end, we investigate by means of molecular dynamics simulations the fracture of calcium-silicate-hydrate (C-S-H), the binding phase of cement, responsible for its mechanical properties. For the first time, we report values of the fracture toughness, critical energy release rate, and surface energy of C-S-H grains. This allows us to discuss the brittleness of the material at the atomic scale. We show that, at this scale, C-S-H breaks in a ductile way, which prevents from using methods based on linear elastic fracture mechanics. Knowledge of the fracture properties of C-S-H at the nanoscale opens the way for an upscaling approach to the design of tougher cement.

  7. Susceptibility Testing

    MedlinePlus

    ... Also known as: Sensitivity Testing; Drug Resistance Testing; Culture and Sensitivity; C & S; Antimicrobial Susceptibility Formal name: Bacterial and Fungal Susceptibility Testing Related tests: Urine Culture ; Blood Culture ; Bacterial Wound Culture ; AFB Testing ; MRSA ; ...

  8. The extract of Cordyceps sinensis inhibited airway inflammation by blocking NF-κB activity.

    PubMed

    Chiou, Ya-Ling; Lin, Ching-Yuang

    2012-06-01

    Aiming the extract of Cordyceps sinensis significantly inhibits airway inflammation, airway hyperresponsiveness, and the infiltration of eosinophils in the airway of rats and may be related to the modulation of T helper (Th)1 and Th2 cells functions. The mechanisms of C. sinensis involved in modulation of suppression inflammation are not yet determined. In this study, the mechanism involved in the extract of C. sinensis-C.S.3-modulated suppression of inflammation was investigated in vivo and in vitro systems. The results showed that C.S.3 reduced airway inflammation in ovalbumin-induced allergic mice. Furthermore, we found C.S.3 could decrease extracellular signal-regulated kinase 1/2 signaling pathway to suppress activity of nuclear factor-κB in lung cells and cultured airway smooth muscle cells. Conclusion C.S.3 may provide clinical applications for asthma in the future.

  9. Improving the Air Mobility Command’s Air Refueler Route Building Capabilities

    DTIC Science & Technology

    2014-03-27

    the fuel required for the mission. Bartholomew - Biggs et al. [4, 5] focus on a methodology to avoid obstacles while building the route with turning...Transportation Science 32(3), 208–220. [4] Bartholomew -Biggs, M. C., S. C. Parkhurst, and S. P. Wilson (2002). Using direct to solve an aircraft routing...problem. Computational Optimization and Applications 21(3), 311–323. [5] Bartholomew -Biggs, M. C., S. C. Parkhurst, and S. P. Wilson (2003). Global

  10. Natural Attenuation of Fuel Hydrocarbons Performance and Cost Results from Multiple Air Force Demonstration Sites

    DTIC Science & Technology

    1999-10-01

    of LTM plans. One site had sufficiently complex hydrogeology to warrant the construction of a three-dimensional (3-D) numerical model using MODFLOW ...ST-C 3 14 9 285 18 77.4 Eglin AFB, FL POL Facility F-C/S, C, Peat F-C/S 0 4 6 4380 263 657 Ellsworth, SD Area D G, ST-C G 7.5 24 9 146 5 76

  11. Transfer of sulfur: from simple to diverse.

    PubMed

    Liu, Hui; Jiang, Xuefeng

    2013-11-01

    The introduction of sulfur atoms onto target molecules is an important area in organic synthesis, in particular in the synthesis of pharmaceutical compounds, and a wide variety of sulfuration agents have been developed for thionation reactions over the past few decades. In this Focus Review, we collect and summarize the C-S bond-formation reactions that have been used to construct C-S bonds in natural products and pharmaceutical compounds.

  12. Silicon/Carbon Anodes with One-Dimensional Pore Structure for Lithium-Ion Batteries

    DTIC Science & Technology

    2013-08-31

    Connected by Single-Wall Carbon Nanotubes for Sodium Ion Battery Cathodes, Nano Letters 12, 5664, 2012. ( § equal contribution)  Chao Luo,§ Yunhua...is superior to that of those conductive additive-incorporated iron oxide anodes, such as amorphous carbon , graphene as well as carbon nanotubes ...electrochemical performance. The C/S composite cathodes were prepared by mixing C/S powders with carbon black and sodium carboxymethyl cellulose (CMC

  13. Magnetostatic Waves-Based Integrated Optic Bragg Cell Modules With Applications To RF Signal Processing

    DTIC Science & Technology

    1992-06-30

    magnetooptic (MO) interactions between guided-optical waves (GOW) and magnetostatic waves (MSW) in Yttrium Iron Garnet- Gadolinium Gallium Garnet (YIG...Yittrium Iron Garnet- Gadolinium Gallium Garnet Waveguide," Appl. Phys. Lett., Vol.47, pp.651-654, 1985. [4] C.S. Tsai, "Guided-wave Acoustooptic Bragg...5] D. Young and C.S. Tsai, "GHz Bandwidth Magneto-Optic Interaction in Yittrium Iron Garnet- Gadolinium Gallium Garnet Using Magnetostatic Forward

  14. Preformulation and Formulation of Investigational New Drugs

    DTIC Science & Technology

    1985-07-01

    tetrahydrofuran, UV grade (Burdick and Jackson); I- octane-sulfonic acid, sodium salt (Eastman Kodak); glacial acetic acid, A.C.S., methyl paraben ...600C. Internal Standard. The stock solution was prepared by dissolving 16 mg of methyl paraben in 2-3 mL of methanol and bringing up to a volume of 1000...UV grade (MCB); 1-octanesulfonic acid, sodium salt (Eastman Kodak); hydroxylamine HC1, (Sigma); g1acial acetic acid, A.C.S,, methyl paraben , sodium

  15. Behavior Analysis of Confined Microsocieties in a Programmed Environment.

    DTIC Science & Technology

    1983-02-01

    Journal of the Experimental Analysis of Behavior , 1978, 10, 243-253. Bernstein, I.S., Rose, R.N...programmed environment. Journal of the Experimental Analysis of Behavior , 1978, 29, 319-329. Emurian, H.H., Bigelow, G.E., Brady, J.V., and Enurian, C.S... of the Experimental Analysis of Behavior , 25 (3): 293-302, 1976. Emurian, H.H., Emurian, C.S., Schnier, F.R., and

  16. Review Guidelines for Software Languages for use in Nuclear Power Plant Safety Systems

    DTIC Science & Technology

    1997-10-01

    Ohio, 1993. Leveson, N.G. and C.S. Turner, An Investigation of the Therac -25 Accidents, University of California, Irvine Technical Report 92-108...response time, but usually leads to non-deterministic maximum response times. Interrupt driven processing was implicated in at least one of the Therac ...Inc., Cleveland, OH, 1993. Leveson, N.G. and C.S. Turner, An Investigation of the Therac -25 Accidents, University of California, Irvine Technical

  17. Desert Studies - A Global View

    DTIC Science & Technology

    1985-08-23

    Exploration, Dec. 6-10, 1982, Ft. Worth, TX, p. 39-40. 1983: 2 abs. published, 2 papers submitted for publication Breed, C. S., 1983, Subsurface imaging with...2-10 (in Chinese). Elachi, C., Roth, L. E., and Schaber, G. G., 1984, Spaceborne radar subsurface imaging in hyperarid regions, 1984: IEEE...are 55) km o. 18t BIBLIOGRAPHY (CITED REFERENCES) Breed, C. S., 1983, Subsurface imaging with SIR-A in the Egyptian Desert (abs.): Summaries, 17th

  18. Vegetable Drying in Two Novel Food Dryers.

    DTIC Science & Technology

    1994-11-01

    TECHNICAL REPORT AD NATICK/TR-95/008 VEGETABLE DRYING IN TWO NOVEL FOOD DRYERS by Joseph Cohen, Christopher Rees, Linnea Hallberg, and Tom C.S. Yang...VEGETABLE DRYING IN TWO NOVEL FOOD DRYERS 6. AUTHOR(S) FTBB 1313 PR: ID:TB-PST Joseph Cohen, Christopher Rees, Linnea Hallberg, and Tom C.S. Yan__ 7...up from the laboratory to large commercial units. ( Priestley , 1962). The technique involves levitating particulate solids in an upward-flowing gas

  19. Metronomic chemotherapy following the maximum tolerated dose is an effective anti-tumour therapy affecting angiogenesis, tumour dissemination and cancer stem cells.

    PubMed

    Vives, Marta; Ginestà, Mireia M; Gracova, Kristina; Graupera, Mariona; Casanovas, Oriol; Capellà, Gabriel; Serrano, Teresa; Laquente, Berta; Viñals, Francesc

    2013-11-15

    In this article, the effectiveness of a multi-targeted chemo-switch (C-S) schedule that combines metronomic chemotherapy (MET) after treatment with the maximum tolerated dose (MTD) is reported. This schedule was tested with gemcitabine in two distinct human pancreatic adenocarcinoma orthotopic models and with cyclophosphamide in an orthotopic ovarian cancer model. In both models, the C-S schedule had the most favourable effect, achieving at least 80% tumour growth inhibition without increased toxicity. Moreover, in the pancreatic cancer model, although peritoneal metastases were observed in control and MTD groups, no dissemination was observed in the MET and C-S groups. C-S treatment caused a decrease in angiogenesis, and its effect on tumour growth was similar to that produced by the MTD followed by anti-angiogenic DC101 treatment. C-S treatment combined an increase in thrombospondin-1 expression with a decrease in the number of CD133+ cancer cells and triple-positive CD133+/CD44+/CD24+ cancer stem cells (CSCs). These findings confirm that the C-S schedule is a challenging clinical strategy with demonstrable inhibitory effects on tumour dissemination, angiogenesis and CSCs.

  20. Composition and density of nanoscale calcium-silicate-hydrate in cement

    SciTech Connect

    Allen, Andrew J; Thomas, Jeffrey J; Jennings, Hamlin M

    2009-08-26

    Although Portland cement concrete is the world's most widely used manufactured material, basic questions persist regarding its internal structure and water content, and their effect on concrete behaviour. Here, for the first time without recourse to drying methods, we measure the composition and solid density of the principal binding reaction product of cement hydration, calcium-silicate-hydrate (C-S-H) gel, one of the most complex of all gels. We also quantify a nanoscale calcium hydroxide phase that coexists with C-S-H gel. By combining small-angle neutron and X-ray scattering data, and by exploiting the hydrogen/deuterium neutron isotope effect both in water and methanol, we determine the mean formula and mass density of the nanoscale C-S-H gel particles in hydrating cement. We show that the formula, (CaO){sub 1.7}(SiO{sub 2})(H{sub 2}O){sub 1.80}, and density, 2.604 Mg m{sup -3}, differ from previous values for C-S-H gel, associated with specific drying conditions. Whereas previous studies have classified water within C-S-H gel by how tightly it is bound, in this study we classify water by its location - with implications for defining the chemically active (C-S-H) surface area within cement, and for predicting concrete properties.

  1. Characterizing human skin blood flow regulation in response to different local skin temperature perturbations.

    PubMed

    Wu, Y; Nieuwenhoff, M D; Huygen, F J P M; van der Helm, F C T; Niehof, S; Schouten, A C

    2017-05-01

    Small nerve fibers regulate local skin blood flow in response to local thermal perturbations. Small nerve fiber function is difficult to assess with classical neurophysiological tests. In this study, a vasomotor response model in combination with a heating protocol was developed to quantitatively characterize the control mechanism of small nerve fibers in regulating skin blood flow in response to local thermal perturbation. The skin of healthy subjects' hand dorsum (n=8) was heated to 42°C with an infrared lamp, and then naturally cooled down. The distance between the lamp and the hand was set to three different levels in order to change the irradiation intensity on the skin and implement three different skin temperature rise rates (0.03°C/s, 0.02°C/s and 0.01°C/s). A laser Doppler imager (LDI) and a thermographic video camera recorded the temporal profile of the skin blood flow and the skin temperature, respectively. The relationship between the skin blood flow and the skin temperature was characterized by a vasomotor response model. The model fitted the skin blood flow response well with a variance accounted for (VAF) between 78% and 99%. The model parameters suggested a similar mechanism for the skin blood flow regulation with the thermal perturbations at 0.03°C/s and 0.02°C/s. But there was an accelerated skin vasoconstriction after a slow heating (0.01°C/s) (p-value<0.05). An attenuation of the skin vasodilation was also observed in four out of the seven subjects during the slow heating (0.01°C/s). Our method provides a promising way to quantitatively assess the function of small nerve fibers non-invasively and non-contact.

  2. Characterization and machine learning prediction of allele-specific DNA methylation.

    PubMed

    He, Jianlin; Sun, Ming-an; Wang, Zhong; Wang, Qianfei; Li, Qing; Xie, Hehuang

    2015-12-01

    A large collection of Single Nucleotide Polymorphisms (SNPs) has been identified in the human genome. Currently, the epigenetic influences of SNPs on their neighboring CpG sites remain elusive. A growing body of evidence suggests that locus-specific information, including genomic features and local epigenetic state, may play important roles in the epigenetic readout of SNPs. In this study, we made use of mouse methylomes with known SNPs to develop statistical models for the prediction of SNP associated allele-specific DNA methylation (ASM). ASM has been classified into parent-of-origin dependent ASM (P-ASM) and sequence-dependent ASM (S-ASM), which comprises scattered-S-ASM (sS-ASM) and clustered-S-ASM (cS-ASM). We found that P-ASM and cS-ASM CpG sites are both enriched in CpG rich regions, promoters and exons, while sS-ASM CpG sites are enriched in simple repeat and regions with high frequent SNP occurrence. Using Lasso-grouped Logistic Regression (LGLR), we selected 21 out of 282 genomic and methylation related features that are powerful in distinguishing cS-ASM CpG sites and trained the classifiers with machine learning techniques. Based on 5-fold cross-validation, the logistic regression classifier was found to be the best for cS-ASM prediction with an ACC of 0.77, an AUC of 0.84 and an MCC of 0.54. Lastly, we applied the logistic regression classifier on human brain methylome and predicted 608 genes associated with cS-ASM. Gene ontology term enrichment analysis indicated that these cS-ASM associated genes are significantly enriched in the category coding for transcripts with alternative splicing forms. In summary, this study provided an analytical procedure for cS-ASM prediction and shed new light on the understanding of different types of ASM events.

  3. The effect of sodium chloride on the dissolution of calcium silicate hydrate gels

    SciTech Connect

    Hill, J. . E-mail: joanne.hill@nirex.co.uk; Harris, A.W.; Manning, M.; Chambers, A.; Swanton, S.W.

    2006-07-01

    The use of cement based materials will be widespread in the long-term management of radioactive materials in the United Kingdom. One of the applications could be the Nirex reference vault backfill (NRVB) as an engineered barrier within a deep geological repository. NRVB confers alkaline conditions, which would provide a robust chemical barrier through the control of the solubility of some key radionuclides, enhanced sorption and minimised corrosion of steel containers. An understanding of the dissolution of C-S-H gels in cement under the appropriate conditions (e.g., saline groundwaters) is necessary to demonstrate the expected evolution of the chemistry over time and to provide sufficient cement to buffer the porewater conditions for the required time. A programme of experimental work has been undertaken to investigate C-S-H gel dissolution behaviour in sodium chloride solutions and the effect of calcium/silicon ratio (C/S), temperature and cation type on this behaviour. Reductions in calcium concentration and pH values were observed with samples equilibrated at 45 deg. C compared to those prepared at 25 deg. C. The effect of salt cation type on salt-concentration dependence of the dissolution of C-S-H gels was investigated by the addition of lithium or potassium chloride in place of sodium chloride for gels with a C/S of 1.0 and 1.8. With a C/S of 1.0, similar increases in dissolved calcium concentration with increasing ionic strength were recorded for the different salts. However, at a C/S of 1.8, anomalously high calcium concentrations were observed in the presence of lithium.

  4. The effect of sodium chloride on the dissolution of calcium silicate hydrate gels.

    PubMed

    Hill, J; Harris, A W; Manning, M; Chambers, A; Swanton, S W

    2006-01-01

    The use of cement based materials will be widespread in the long-term management of radioactive materials in the United Kingdom. One of the applications could be the Nirex reference vault backfill (NRVB) as an engineered barrier within a deep geological repository. NRVB confers alkaline conditions, which would provide a robust chemical barrier through the control of the solubility of some key radionuclides, enhanced sorption and minimised corrosion of steel containers. An understanding of the dissolution of C-S-H gels in cement under the appropriate conditions (e.g., saline groundwaters) is necessary to demonstrate the expected evolution of the chemistry over time and to provide sufficient cement to buffer the porewater conditions for the required time. A programme of experimental work has been undertaken to investigate C-S-H gel dissolution behaviour in sodium chloride solutions and the effect of calcium/silicon ratio (C/S), temperature and cation type on this behaviour. Reductions in calcium concentration and pH values were observed with samples equilibrated at 45 degrees C compared to those prepared at 25 degrees C. The effect of salt cation type on salt-concentration dependence of the dissolution of C-S-H gels was investigated by the addition of lithium or potassium chloride in place of sodium chloride for gels with a C/S of 1.0 and 1.8. With a C/S of 1.0, similar increases in dissolved calcium concentration with increasing ionic strength were recorded for the different salts. However, at a C/S of 1.8, anomalously high calcium concentrations were observed in the presence of lithium.

  5. Factors in cerebrospinal fluid from goats that affect sleep and activity in rats*

    PubMed Central

    Fencl, V.; Koski, G.; Pappenheimer, J. R.

    1971-01-01

    1. Intraventricular infusion in the rat of 0·1 ml. cerebrospinal fluid (c.s.f.) from sleep-deprived goats increases the duration of sleep (measured by e.e.g.) and decreases locomotor activity (measured photo-electrically) for at least 6 hr subsequent to the infusion. Subarachnoid infusions are ineffective. 2. C.s.f. from control and sleep-deprived goats was fractionated by ultrafiltration through molecular sieves. The sleep-promoting Factor S is found in the low molecular weight fraction (mol. wt. < 500) of c.s.f. from sleep-deprived but not from control goats. 3. The concentration of Factor S in c.s.f. increases progressively during the first 48 hr of sleep deprivation. 4. The sleep promoting effects of Factor S cannot be duplicated by serotonin, 4-OH-butyrate, butyrolactone, GABA (γ-amino butyric acid), glutamic acid or 3′,5′-cyclic AMP when these substances are added to control fluids in concentrations up to 10 times greater than those found in normal c.s.f. 5. Intraventricular or subarchnoid infusion in the rat of 0·1 ml. proteinfree c.s.f. containing molecules in the mol. wt. range of 500-10,000 at 10-30 × normal concentration causes hyperactivity which persists for several days and nights following the infusion. The excitatory material, probably a peptide, is present in c.s.f. from both control and sleep-deprived goats. 6. The properties of Factor S suggest that it may play a role in the normal regulation of sleep and wakefulness. PMID:4327693

  6. Rapid divergence and postglacial colonization in western North American Steller's jays (Cyanocitta stelleri).

    PubMed

    Burg, Theresa M; Gaston, Anthony J; Winker, Kevin; Friesen, Vicki L

    2005-10-01

    Post-Pleistocene avian colonization of deglaciated North America occurred from multiple refugia, including a coastal refugium in the northwest. The location of a Pacific Coastal refugium is controversial; however, multiple lines of evidence suggest that it was located near the Queen Charlotte Islands (also known as Haida Gwaii). The Queen Charlotte Islands contain a disproportionately large number of endemic plants and animals including the Steller's jay Cyanocitta stelleri carlottae. Using five highly variable microsatellite markers, we studied population structure among eight populations of Steller's jay (N = 150) from geographical areas representing three subspecies in western North America: C. s. carlottae, C. s. stelleri and C. s. annectens. Microsatellite analyses revealed genetic differentiation between each of the three subspecies, although more extensive sampling of additional C. s. annectens populations is needed to clarify the level of subspecies differentiation. High levels of population structure were found among C. s. stelleri populations with significant differences in all but two pairwise comparisons. A significant isolation by distance pattern was observed amongst populations in the Pacific Northwest and Alaska. In the C. s. carlottae population, there was evidence of reduced genetic variation, higher number of private alleles than northern C. s. stelleri populations and higher levels of divergence between Queen Charlotte Island and other populations. We were unable to reject the hypothesis that the Queen Charlotte Islands served as a refugium during the Pleistocene. Steller's jay may have colonized the Queen Charlotte Islands near the end of the last glaciation or persisted throughout the Pleistocene, and this subspecies may thus represent a glacial relic. The larger number of private alleles, despite reduced genetic variation, morphological distinctiveness and high divergence from other populations suggests that the Queen Charlotte Island

  7. In vitro activity of five quinolones and analysis of the quinolone resistance-determining regions of gyrA, gyrB, parC, and parE in Ureaplasma parvum and Ureaplasma urealyticum clinical isolates from perinatal patients in Japan.

    PubMed

    Kawai, Yasuhiro; Nakura, Yukiko; Wakimoto, Tetsu; Nomiyama, Makoto; Tokuda, Tsugumichi; Takayanagi, Toshimitsu; Shiraishi, Jun; Wasada, Kenshi; Kitajima, Hiroyuki; Fujita, Tomio; Nakayama, Masahiro; Mitsuda, Nobuaki; Nakanishi, Isao; Takeuchi, Makoto; Yanagihara, Itaru

    2015-04-01

    Ureaplasma spp. cause several disorders, such as nongonococcal urethritis, miscarriage, and preterm delivery with lung infections in neonates, characterized by pathological chorioamnionitis in the placenta. Although reports on antibiotic resistance in Ureaplasma are on the rise, reports on quinolone-resistant Ureaplasma infections in Japan are limited. The purpose of this study was to determine susceptibilities to five quinolones of Ureaplasma urealyticum and Ureaplasma parvum isolated from perinatal samples in Japan and to characterize the quinolone resistance-determining regions in the gyrA, gyrB, parC, and parE genes. Out of 28 clinical Ureaplasma strains, we isolated 9 with high MICs of quinolones and found a single parC gene mutation, resulting in the change S83L. Among 158 samples, the ParC S83L mutation was found in 37 samples (23.4%), including 1 sample harboring a ParC S83L-GyrB P462S double mutant. Novel mutations of ureaplasmal ParC (S83W and S84P) were independently found in one of the samples. Homology modeling of the ParC S83W mutant suggested steric hindrance of the quinolone-binding pocket (QBP), and de novo prediction of peptide structures revealed that the ParC S84P may break/kink the formation of the α4 helix in the QBP. Further investigations are required to unravel the extent and mechanism of antibiotic resistance of Ureaplasma spp. in Japan.

  8. Microstructure and physical properties of steel-ladle purging plug refractory materials

    NASA Astrophysics Data System (ADS)

    Long, Bin; Xu, Gui-ying; Andreas, Buhr

    2017-02-01

    Three different castables were prepared as steel-ladle purging-plug refractory materials: corundum-based low-cement castable (C-LCC), corundum-spinel-based low-cement castable (C-S-LCC), and no-cement corundum-spinel castable (C-S-NCC) (hydratable alumina ρ-Al2O3 bonded). The properties of these castables were characterized with regard to water demand/flow ability, cold crushing strength (CCS), cold modulus of rupture (CMoR), permanent linear change (PLC), apparent porosity, and hot modulus of rupture (HMoR). The results show the CCS/CMoR and HMoR of C-LCC and C-S-LCC are greater than those of the castable C-S-NCC. According to the microstructure analysis, the sintering effect and the bonding type of the matrix material differ among the three castables. The calcium hexaluminate (CA6) phase in the matrix of C-LCC enhances the cold and hot mechanical strengths. In the case of C-S-LCC, the CA6 and 2CaO·2MgO·14Al2O3 (C2M2A14) ternary phases generated from the matrix can greatly increase the cold and hot mechanical strengths. In the case of the no-cement castable, sintering becomes difficult, resulting in a lower mechanical strength.

  9. Retention of alkali ions by hydrated low-pH cements: Mechanism and Na{sup +}/K{sup +} selectivity

    SciTech Connect

    Bach, T.T.H.; Chabas, E.; Cau Dit Coumes, C.; Frizon, F.

    2013-09-15

    Low-pH cements, also referred to as low-alkalinity cements, can be designed by replacing significant amounts of Portland cement by pozzolanic materials. Their pore solution is characterized by a pH near 11, and an alkali concentration much lower than that of Portland cement. This work investigates the retention of sodium and potassium by a hydrated low-pH cement comprising 60% Portland cement and 40% silica fume. It is shown that sorption of potassium is higher than that of sodium and mainly results from counterion charge balancing of the C-S-H negative surface charge. To explain the greater retention of potassium compared to sodium, it is postulated that potassium, unlike sodium, may enter the interlayer of C-S-H to compensate the negative charges in the interlayer, in addition to the external surfaces. This assumption is supported by structural characterization of C-S-H using X-ray diffraction.

  10. In situ time-resolved X-ray diffraction of tobermorite formation in autoclaved aerated concrete: Influence of silica source reactivity and Al addition

    SciTech Connect

    Matsui, Kunio; Kikuma, Jun; Tsunashima, Masamichi; Ishikawa, Tetsuji; Matsuno, Shin-ya; Ogawa, Akihiro; Sato, Masugu

    2011-05-15

    The hydrothermal formation of tobermorite during the processing of autoclaved aerated concrete was investigated by in situ X-ray diffraction (XRD) analysis. High-energy X-rays from a synchrotron radiation source in combination with a newly developed autoclave cell and a photon-counting pixel array detector were used. To investigate the effects of the silica source, reactive quartz from chert and less-reactive quartz from quartz sand were used as starting materials. The effect of Al addition on tobermorite formation was also studied. In all cases, C-S-H, hydroxylellestadite and katoite were clearly observed as intermediates. Acceleration of tobermorite formation by Al addition was clearly observed. However, Al addition did not affect the dissolution rate of quartz. Two pathways, via C-S-H and katoite, were also observed in the Al-containing system. These results suggest that the structure of initially formed C-S-H is important for the subsequent tobermorite formation reactions.

  11. [Anesthetic management for caesarean delivery in a parturient with achondroplasia].

    PubMed

    Ando, Akira; Hishinuma, Norimasa; Shirotori, Toru; Sasao, Junichi; Tanaka, Satoshi; Kawamata, Mikito

    2014-06-01

    A 27-year-old parturient (height, 130 cm; weight, 43 kg) with achondroplasia, which is characterized by rhizomeric short stature, large head and frontal bossing, was scheduled for elective caesarean section (C/S) because of her contracted pelvis. Her first delivery had been performed by C/S under general anesthesia at a regional hospital 6 years before. Preoperative airway assessment showed normal mouth opening and mobile cervical spine. Since she had anxiety about needle puncture and refused neuraxial blockade and since we considered the trachea could be intubated, we decided to perform C/S under general anesthesia at 37 weeks of gestation. The patient and baby had an uneventful perioperative course. Underdevelopment of bone formation results in characteristic craniofacial and vertebral abnormalities in patients with achondroplasia. Anesthetic management of achondroplastic parturients should be specified to individual basis based on careful preoperative assessment of craniofacial and vertebral deformities.

  12. Swift/XRT monitoring of SN2011dh: evidence for fading

    NASA Astrophysics Data System (ADS)

    Margutti, R.; Soderberg, A.

    2011-06-01

    We have analyzed 24 ks of Swift/XRT data of SN1011dh (Silverman et al. 2001, Atel #3398; Reiland et al. 2011, CBET #2736) collected in the time period June 3-7. In agreement with Campana & Burrows (2011, Atel #3414) we find that the source is detected at an average level of ~6 E-03 c/s. We furthermore find that the source has faded from ~1.3 E-02 c/s to ~3 E-03 c/s, with a power-law decay index of alpha~ -1.8 (+0.6,-0.6 90% c.l.) The probability of a chance fluctuation is below 0.01% (binomial test), thus we conclude that the observed decay is statistically significant.

  13. Search for charged Higgs bosons in e +e - collisions at energies up to s=209 GeV

    NASA Astrophysics Data System (ADS)

    Heister, A.; Schael, S.; Barate, R.; Brunelière, R.; de Bonis, I.; Decamp, D.; Goy, C.; Jezequel, S.; Lees, J.-P.; Martin, F.; Merle, E.; Minard, M.-N.; Pietrzyk, B.; Trocmé, B.; Boix, G.; Bravo, S.; Casado, M. P.; Chmeissani, M.; Crespo, J. M.; Fernandez, E.; Fernandez-Bosman, M.; Garrido, Ll; Graugés, E.; Lopez, J.; Martinez, M.; Merino, G.; Pacheco, A.; Paneque, D.; Ruiz, H.; Colaleo, A.; Creanza, D.; de Filippis, N.; de Palma, M.; Iaselli, G.; Maggi, G.; Maggi, M.; Nuzzo, S.; Ranieri, A.; Raso, G.; Ruggieri, F.; Selvaggi, G.; Silvestris, L.; Tempesta, P.; Tricomi, A.; Zito, G.; Huang, X.; Lin, J.; Ouyang, Q.; Wang, T.; Xie, Y.; Xu, R.; Xue, S.; Zhang, J.; Zhang, L.; Zhao, W.; Abbaneo, D.; Azzurri, P.; Barklow, T.; Buchmüller, O.; Cattaneo, M.; Cerutti, F.; Clerbaux, B.; Drevermann, H.; Forty, R. W.; Frank, M.; Gianotti, F.; Greening, T. C.; Hansen, J. B.; Harvey, J.; Hutchcroft, D. E.; Janot, P.; Jost, B.; Kado, M.; Mato, P.; Moutoussi, A.; Ranjard, F.; Rolandi, L.; Schlatter, D.; Sguazzoni, G.; Tejessy, W.; Teubert, F.; Valassi, A.; Videau, I.; Ward, J. J.; Badaud, F.; Dessagne, S.; Falvard, A.; Fayolle, D.; Gay, P.; Jousset, J.; Michel, B.; Monteil, S.; Pallin, D.; Pascolo, J. M.; Perret, P.; Hansen, J. D.; Hansen, J. R.; Hansen, P. H.; Nilsson, B. S.; Kyriakis, A.; Markou, C.; Simopoulou, E.; Vayaki, A.; Zachariadou, K.; Blondel, A.; Brient, J.-C.; Machefert, F.; Rougé, A.; Swynghedauw, M.; Tanaka, R.; Videau, H.; Ciulli, V.; Focardi, E.; Parrini, G.; Antonelli, A.; Antonelli, M.; Bencivenni, G.; Bossi, F.; Capon, G.; Chiarella, V.; Laurelli, P.; Mannocchi, G.; Murtas, G. P.; Passalacqua, L.; Kennedy, J.; Lynch, J. G.; Negus, P.; O'Shea, V.; Thompson, A. S.; Wasserbaech, S.; Cavanaugh, R.; Dhamotharan, S.; Geweniger, C.; Hanke, P.; Hepp, V.; Kluge, E. E.; Leibenguth, G.; Putzer, A.; Stenzel, H.; Tittel, K.; Wunsch, M.; Beuselinck, R.; Cameron, W.; Davies, G.; Dornan, P. J.; Girone, M.; Hill, R. D.; Marinelli, N.; Nowell, J.; Rutherford, S. A.; Sedgbeer, J. K.; Thompson, J. C.; White, R.; Ghete, V. M.; Girtler, P.; Kneringer, E.; Kuhn, D.; Rudolph, G.; Bouhova-Thacker, E.; Bowdery, C. K.; Clarke, D. P.; Ellis, G.; Finch, A. J.; Foster, F.; Hughes, G.; Jones, R. W. L.; Pearson, M. R.; Robertson, N. A.; Smizanska, M.; van der Aa, O.; Delaere, C.; Lemaitre, V.; Blumenschein, U.; Hölldorfer, F.; Jakobs, K.; Kayser, F.; Kleinknecht, K.; Müller, A.-S.; Quast, G.; Renk, B.; Sander, H.-G.; Schmeling, S.; Wachsmuth, H.; Zeitnitz, C.; Ziegler, T.; Bonissent, A.; Coyle, P.; Curtil, C.; Ealet, A.; Fouchez, D.; Payre, P.; Tilquin, A.; Ragusa, F.; David, A.; Dietl, H.; Ganis, G.; Hüttmann, K.; Lütjens, G.; Männer, W.; Moser, H.-G.; Settles, R.; Wolf, G.; Boucrot, J.; Callot, O.; Davier, M.; Duflot, L.; Grivaz, J.-F.; Heusse, Ph; Jacholkowska, A.; Serin, L.; Veillet, J.-J.; de Vivie de Régie, J.-B.; Yuan, C.; Bagliesi, G.; Boccali, T.; Foà, L.; Giammanco, A.; Giassi, A.; Ligabue, F.; Messineo, A.; Palla, F.; Sanguinetti, G.; Sciabà, A.; Tenchini, R.; Venturi, A.; Verdini, P. G.; Awunor, O.; Blair, G. A.; Cowan, G.; Garcia-Bellido, A.; Green, M. G.; Jones, L. T.; Medcalf, T.; Misiejuk, A.; Strong, J. A.; Teixeira-Dias, P.; Clifft, R. W.; Edgecock, T. R.; Norton, P. R.; Tomalin, I. R.; Bloch-Devaux, B.; Boumediene, D.; Colas, P.; Fabbro, B.; Lançon, E.; Lemaire, M.-C.; Locci, E.; Perez, P.; Rander, J.; Seager, P.; Tuchming, B.; Vallage, B.; Konstantinidis, N.; Litke, A. M.; Taylor, G.; Booth, C. N.; Cartwright, S.; Combley, F.; Hodgson, P. N.; Lehto, M.; Thompson, L. F.; Böhrer, A.; Brandt, S.; Grupen, C.; Hess, J.; Ngac, A.; Prange, G.; Sieler, U.; Borean, C.; Giannini, G.; He, H.; Putz, J.; Rothberg, J.; Armstrong, S. R.; Berkelman, K.; Cranmer, K.; Ferguson, D. P. S.; Gao, Y.; González, S.; Hayes, O. J.; Hu, H.; Jin, S.; Kile, J.; McNamara, P. A.; Nielsen, J.; Pan, Y. B.; von Wimmersperg-Toeller, J. H.; Wiedenmann, W.; Wu, J.; Wu, Sau Lan; Wu, X.; Zobernig, G.; Dissertori, G.; Aleph Collaboration

    A search for charged Higgs bosons produced in pairs is performed with data collected at centre-of-mass energies ranging from 189 to 209 GeV by ALEPH at LEP, corresponding to a total luminosity of 629 pb -1. The three final states τ +ν ττ -ν¯τ, c s¯τ -ν¯τ and c s¯s c¯ are considered. No evidence for a signal is found and lower limits are set on the mass mH ± as a function of the branching fraction B( H +→τ +ν τ) . In the framework of a two-Higgs-doublet model, and assuming B( H +→τ +ν τ)+ B( H +→c s¯)=1 , charged Higgs bosons with masses below 79.3 GeV/ c2 are excluded at 95% confidence level independently of the branching ratios.

  14. Cronkhite-Canada syndrome: epidemiological study of 110 cases reported in Japan.

    PubMed

    Goto, A

    1995-01-01

    One hundred and ten cases of Cronkhite-Canada Syndrome (C-C-S) reported in Japan were reviewed in this epidemiologic study. Seventy-five percent of all C-C-S cases reported in the world in literature have been reported from Japan. There has been no special occupation associated with an increased incidence of C-C-S. Mental and physical stress have been confirmed as among the most important risk factors for this syndrome. Hypogeusia is the dominant initial symptom which usually is followed by diarrhea and ectodermal changes including alopecia, nail dystrophy and skin pigmentation. Gastrointestinal polyposis is closely related to the malabsorption which induced these ectodermal changes. However, there is a small number of cases in which alopecia precedes to the diarrhea in the disease course.

  15. Grain Boundary Segregation Behavior of Boron in Low-Alloy Steel

    NASA Astrophysics Data System (ADS)

    Shigesato, Genichi; Fujishiro, Taishi; Hara, Takuya

    2014-04-01

    The boron concentration profiles around prior austenite grain boundaries in Fe-0.05C-0.5Mo-0.001B (mass pct) are examined using aberration-corrected STEM-EELS. In order to obtain the precise distribution of boron around the boundaries, tilt series measurements with thin specimens (<30 nm) are performed and the EEL spectra are analyzed by principal component analysis (PCA) and multivariate curve resolution (MCR). The boron concentration profile changes with the cooling rate from the solid solution temperature. The concentration at grain boundaries is maximized at a medium rate (30 °C/s), where the concentration reaches 8 at. pct, and it decreases at a larger (250 °C/s) or smaller (5 °C/s) rate. On the other hand, the boron distribution becomes wider as the cooling rate becomes smaller. The current results suggest that the boron segregation in the alloy is formed by the "non-equilibrium segregation mechanism."

  16. P-glycoprotein ATPase activity requires lipids to activate a switch at the first transmission interface.

    PubMed

    Loo, Tip W; Clarke, David M

    2016-04-01

    P-glycoprotein (P-gp) is an ABC (ATP-Binding Cassette) drug pump. A common feature of ABC proteins is that they are organized into two wings. Each wing contains a transmembrane domain (TMD) and a nucleotide-binding domain (NBD). Drug substrates and ATP bind at the interface between the TMDs and NBDs, respectively. Drug transport involves ATP-dependent conformational changes between inward- (open, NBDs far apart) and outward-facing (closed, NBDs close together) conformations. P-gps crystallized in the presence of detergent show an open structure. Human P-gp is inactive in detergent but basal ATPase activity is restored upon addition of lipids. The lipids might cause closure of the wings to bring the NBDs close together to allow ATP hydrolysis. We show however, that cross-linking the wings together did not activate ATPase activity when lipids were absent suggesting that lipids may induce other structural changes required for ATPase activity. We then tested the effect of lipids on disulfide cross-linking of mutants at the first transmission interface between intracellular loop 4 (TMD2) and NBD1. Mutants L443C/S909C and L443C/R905C but not G471C/S909C and V472C/S909C were cross-linked with oxidant when in membranes. The mutants were then purified and cross-linked with or without lipids. Mutants G471C/S909C and V472C/S909C cross-linked only in the absence of lipids whereas mutants L443C/S909C and L443C/R905C were cross-linked only in the presence of lipids. The results suggest that lipids activate a switch at the first transmission interface and that the structure of P-gp is different in detergents and lipids.

  17. An Improved Method of Heterogeneity Compensation for the Convolution / Superposition Algorithm

    NASA Astrophysics Data System (ADS)

    Jacques, Robert; McNutt, Todd

    2014-03-01

    Purpose: To improve the accuracy of convolution/superposition (C/S) in heterogeneous material by developing a new algorithm: heterogeneity compensated superposition (HCS). Methods: C/S has proven to be a good estimator of the dose deposited in a homogeneous volume. However, near heterogeneities electron disequilibrium occurs, leading to the faster fall-off and re-buildup of dose. We propose to filter the actual patient density in a position and direction sensitive manner, allowing the dose deposited near interfaces to be increased or decreased relative to C/S. We implemented the effective density function as a multivariate first-order recursive filter and incorporated it into GPU-accelerated, multi-energetic C/S implementation. We compared HCS against C/S using the ICCR 2000 Monte-Carlo accuracy benchmark, 23 similar accuracy benchmarks and 5 patient cases. Results: Multi-energetic HCS increased the dosimetric accuracy for the vast majority of voxels; in many cases near Monte-Carlo results were achieved. We defined the per-voxel error, %|mm, as the minimum of the distance to agreement in mm and the dosimetric percentage error relative to the maximum MC dose. HCS improved the average mean error by 0.79 %|mm for the patient volumes; reducing the average mean error from 1.93 %|mm to 1.14 %|mm. Very low densities (i.e. < 0.1 g / cm3) remained problematic, but may be solvable with a better filter function. Conclusions: HCS improved upon C/S's density scaled heterogeneity correction with a position and direction sensitive density filter. This method significantly improved the accuracy of the GPU based algorithm reaching the accuracy levels of Monte Carlo based methods with performance in a few tenths of seconds per beam. Acknowledgement: Funding for this research was provided by the NSF Cooperative Agreement EEC9731748, Elekta / IMPAC Medical Systems, Inc. and the Johns Hopkins University. James Satterthwaite provided the Monte Carlo benchmark simulations.

  18. Modeling of drug release from matrix systems involving moving boundaries: approximate analytical solutions.

    PubMed

    Lee, Ping I

    2011-10-10

    The purpose of this review is to provide an overview of approximate analytical solutions to the general moving boundary diffusion problems encountered during the release of a dispersed drug from matrix systems. Starting from the theoretical basis of the Higuchi equation and its subsequent improvement and refinement, available approximate analytical solutions for the more complicated cases involving heterogeneous matrix, boundary layer effect, finite release medium, surface erosion, and finite dissolution rate are also discussed. Among various modeling approaches, the pseudo-steady state assumption employed in deriving the Higuchi equation and related approximate analytical solutions appears to yield reasonably accurate results in describing the early stage release of a dispersed drug from matrices of different geometries whenever the initial drug loading (A) is much larger than the drug solubility (C(s)) in the matrix (or A≫C(s)). However, when the drug loading is not in great excess of the drug solubility (i.e. low A/C(s) values) or when the drug loading approaches the drug solubility (A→C(s)) which occurs often with drugs of high aqueous solubility, approximate analytical solutions based on the pseudo-steady state assumption tend to fail, with the Higuchi equation for planar geometry exhibiting a 11.38% error as compared with the exact solution. In contrast, approximate analytical solutions to this problem without making the pseudo-steady state assumption, based on either the double-integration refinement of the heat balance integral method or the direct simplification of available exact analytical solutions, show close agreement with the exact solutions in different geometries, particularly in the case of low A/C(s) values or drug loading approaching the drug solubility (A→C(s)). However, the double-integration heat balance integral approach is generally more useful in obtaining approximate analytical solutions especially when exact solutions are not

  19. X-ray diffraction: a powerful tool to probe and understand the structure of nanocrystalline calcium silicate hydrates.

    PubMed

    Grangeon, Sylvain; Claret, Francis; Linard, Yannick; Chiaberge, Christophe

    2013-10-01

    X-ray diffraction (XRD) patterns were calculated and compared to literature data with the aim of investigating the crystal structure of nanocrystalline calcium silicate hydrates (C-S-H), the main binding phase in hydrated Portland cement pastes. Published XRD patterns from C-S-H of Ca/Si ratios ranging from ~ 0.6 to ~ 1.7 are fully compatible with nanocrystalline and turbostratic tobermorite. Even at a ratio close or slightly higher than that of jennite (Ca/Si = 1.5) this latter mineral, which is required in some models to describe the structure of C-S-H, is not detected in the experimental XRD patterns. The 001 basal reflection from C-S-H, positioned at ~ 13.5 Å when the C-S-H structural Ca/Si ratio is low (< 0.9), shifts towards smaller d values and sharpens with increasing Ca/Si ratio, to reach ~ 11.2 Å when the Ca/Si ratio is higher than 1.5. Calculations indicate that the sharpening of the 001 reflection may be related to a crystallite size along c* (i.e. a mean number of stacked layers) increasing with the C-S-H Ca/Si ratio. Such an increase would contribute to the observed shift of the 001 reflection, but fails to quantitatively explain it. It is proposed that the observed shift could result from interstratification of at least two tobermorite-like layers, one having a high and the other a low Ca/Si ratio with a basal spacing of 11.3 and 14 Å, respectively.

  20. Containment and surveillance -- A principal IAEA safeguards measure

    SciTech Connect

    Drayer, D.D.; Dupree, S.A.; Sonnier, C.S.

    1997-12-31

    The growth of the safeguards inspectorate of the Agency, spanning more than 40 years, has produced a variety of interesting subjects (legal, technical, political, etc.) for recollection, discussion, and study. Although the Agency was established in 1957, the first practical inspections did not occur until the early 1960s. In the early inspections, thee was little C/S equipment available, and no optical surveillance was used. However, by the third decade of the IAEA, the 1980s, many technology advances were made, and the level of C/S equipment activities increased. By the late 1980s, some 200 Twin Minolta film camera systems were deployed by the Agency for safeguards use. At the present time, the Agency is evaluating and beginning to implement remote monitoring as part of the Strengthened Safeguards System. However, adoption of remote monitoring by international agencies cannot occur rapidly because of the many technical and policy issues associated with this activity. A glimpse into the future indicates that an important element of safeguards instrumentation will be the merging of C/S and NDA equipment into integrated systems. The use of modern interior area monitors in International Safeguards also offers a great potential for advancing C/S measures. The research in microsensors is in its infancy, and the opportunities for their reducing the cost, increasing the life time, and increasing the reliability of sensors for safeguards applications are manifold. A period may be approaching in which the terminology of C/S will no longer have its original meaning, as integrated systems combining NDA instruments and C/S instruments are already in use and are expected to be the norm in the near future.

  1. The Effect of Weather On a Ship’s Speed

    DTIC Science & Technology

    1977-10-01

    the need for some current measurements in the neighbourhood of an eddy warranted a reasonable attempt to deduce ships’ speed from engine revolutions...RANRL TECHNICAL NOTE No. 4/77 cl) C) L•-J (C) COMMONWEALTH OF AUSTRALIA 1977 €., THE EFFECT OF WEATHER ON A SHIP’S SPEED (U) DDC BY C. S. NUSSON JUL 12...NOTE NO. 4/77 TI.- EFFECT OF WEATHER ON A SHIP’S SPEED (U) C.S. Nilsson . COMMONWEALTH OF AUSTRALIA 1977 SUMMARY The need for better dead-reckoning

  2. Knowledge, attitude and practices for design for safety: A study on civil & structural engineers.

    PubMed

    Goh, Yang Miang; Chua, Sijie

    2016-08-01

    Design for safety (DfS) (also known as prevention through design, safe design and Construction (Design and Management)) promotes early consideration of safety and health hazards during the design phase of a construction project. With early intervention, hazards can be more effectively eliminated or controlled leading to safer worksites and construction processes. DfS is practiced in many countries, including Australia, the UK, and Singapore. In Singapore, the Manpower Ministry enacted the DfS Regulations in July 2015, which will be enforced from August 2016 onwards. Due to the critical role of civil and structural (C&S) engineers during design and construction, the DfS knowledge, attitude and practices (KAP) of C&S engineers have significant impact on the successful implementation of DfS. Thus, this study aims to explore the DfS KAP of C&S engineers so as to guide further research in measuring and improving DfS KAP of designers. During the study, it was found that there is a lack of KAP studies in construction management. Therefore, this study also aims to provide useful lessons for future applications of the KAP framework in construction management research. A questionnaire was developed to assess the DfS KAP of C&S engineers. The responses provided by 43 C&S engineers were analyzed. In addition, interviews with experienced construction professionals were carried out to further understand perceptions of DfS and related issues. The results suggest that C&S engineers are supportive of DfS, but the level of DfS knowledge and practices need to be improved. More DfS guidelines and training should be made available to the engineers. To ensure that DfS can be implemented successfully, there is a need to study the contractual arrangements between clients and designers and the effectiveness of different implementation approaches for the DfS process. The questionnaire and findings in this study provided the foundation for a baseline survey with larger sample size, which is

  3. Synthesis of Bioinorganic Antimicrobial Peptide Nanoparticles with Potential Therapeutic Properties (POSTPRINT)

    DTIC Science & Technology

    2008-07-01

    at 37 °C in either Muller-Hinton broth (M-H) for bacterial strains or Yeast Mold broth for C. albicans ( S . epidermidis was grown at 30 °C in M-H). Each...media. Known concentrations of KSL were then added to wells and incubated for 24 h at 37 °C ( S . epidermidis was incubated at 30 °C). The MIC was...visible growth were spread onto solid growth media plates and incubated overnight at 37 °C ( S . epidermidis was grown at 30 °C). The MBC and MFC were

  4. Classroom Lesson on Safe OTC Medicine Use - for Adult ...

    Center for Drug Evaluation (CDER)

    ... Cần toa 1. Do bác sĩ chỉ định 2. Mua tại nhà thuốc tây 3. Chỉ có người được bác sĩ chỉ định mới được dùng ... 22 Giữ thuốc ở ngoài tầm tay của trẻ rm ...

  5. Thallium Mercury Laser Development.

    DTIC Science & Technology

    1980-04-17

    AD-A9 840 WESTINGHOUSE RESEARCH AND DEVELOPMENT CENTER PITTSBU--ETC F/A 20/5 THALLIUM MERCURY LASER DEVELOPMENT .(U) APR 80 C S LIU, D W FELDMAN, J L...PACK NO001I78-C-0131 lIlrt A nEQE-WOTFX-R NL THALLIUM MERCURY LASER DEVELOPMENT C. S. Liu, D. W. Feldman and J. L. Pack FINAL REPORT (PHASE II...PERIOD COVERED Thallium Mercury Laser Development -T- Final Report (Phase II) Feb. 1, 1979 to Jan. 31, 1980 77a. w-atF. -REPORT NUMBER _,___C2-OTEX

  6. Sensor-to-Shooter C2ISR Integration with Joint Battlespace Infosphere: JBI Client Adapters

    DTIC Science & Technology

    2006-01-01

    Interface LinkPro-PA Entity Table Link16 Enumeration Mappings Entity information To CGIS Aircraft Status Manager Engagement Status Manager Engagement...Oracle 9.2.0.5, BEA WebLogic 8.1, ESRI ArcSDE 9.0, ESRI ArcIMS 9.0, and Sun iPlanet LDAP 5.2—license restrictions may vary depending on the...S for map display (not absolutely required) X ESRI ArcIMS 9.0 C $ S for map display (not absolutely required) X Sun iPlanet LDAP 5.2 C S Sun Java

  7. Analysis of Biological Particles by Mass Spectrometry

    DTIC Science & Technology

    1984-10-23

    references therein. 19. Sinha, M.P.; Platz, R.M.; Friedlander, S.K.; Vilker, V.L. J. Appl. Env. Microbiol. 1984 (in press). 20. Cummins, C.S.; Harris ...from microuial aerosols " in densely populated urban region5. Appi. Environ. Microbiol. 39: o- 11. •’ 19 7. Cumins. C. S.. and H. J. Harris . 1956. The...Fraset , D. W., T. F. Tsai, W. Orenstein, W. E. Parkin. H. J. Beecham, R. G. S.arrar, J. Harris , G. F. Mallison, S. M. Martin, J. E. McDade. C. C

  8. Experiments with powdered CMN thermometers between 10 mK and 4K, and a comparison with an NBS SRM 768 fixed-point device

    SciTech Connect

    Fogle, W.E.; Hornung, E.W.; Mayberry, M.C.; Phillips, N.E.

    1981-08-01

    Comparison of a powdered CMN thermometer with an NBS fixed point device demonstrates an internal inconsistency in the T/sub c/'s assigned to the fixed point device. T/sub c/'s between 100 and 200 mK are in excellent agreement with a temperature scale interpolated between He vapor pressure temperatures and nuclear orientation temperatures, but there is a discrepancy of 8% at the 15 mK point. Evidence for different susceptibility-temperature relations for superficially similar CMN thermometers is also presented.

  9. Standard Time and Frequency Signal Dissemination Service Via Indian Domestic Satellite INSAT-1B

    DTIC Science & Technology

    1987-12-01

    New Delhi-110012, India ABSTRACT INSAT-1B is a multipurpose Indian Domestic Satellite parked on the equator at 74’E. It has twelve transponders in C...already being commercially manufactured in India. The design of the STFS decoder as discussed in section 4 has been finalized at NPL and a prototype...Band and two in C/S Band. One of the narrowband injected carriers in one C/S band transponder is dedicated for Standard Time and Frequency Signal

  10. Immunotherapeutic Strategies in Breast Cancer:Preclinical and Clinical Trials

    DTIC Science & Technology

    2012-09-01

    Mukherjee, P., Ginardi, A.R., Madsen, C.S., Tinder, T. L., Jacobs, F., Parker , J., Agrawal, B., Longenecker, B.M., and Gendler, S.J. (2001) MUC1...Madsen, C.S., Ginardi, A.R., Ginder, T.L., Jacobs, F., Parker , J., Agrawal, B., Longenecker, B.M., and Gendler, S.J. (2003) Mucin 1-specific...Jacobs, F., Parker , J., Agrawal, B., Longenecker, B.M., and Gendler, S.J. (2001) MUC1-specific CTLs are non-functional within a pancreatic tumor

  11. Emergent Dynamics of a Thermodynamically Consistent Particle Model

    NASA Astrophysics Data System (ADS)

    Ha, Seung-Yeal; Ruggeri, Tommaso

    2017-03-01

    We present a thermodynamically consistent particle (TCP) model motivated by the theory of multi-temperature mixture of fluids in the case of spatially homogeneous processes. The proposed model incorporates the Cucker-Smale (C-S) type flocking model as its isothermal approximation. However, it is more complex than the C-S model, because the mutual interactions are not only " mechanical" but are also affected by the "temperature effect" as individual particles may exhibit distinct internal energies. We develop a framework for asymptotic weak and strong flocking in the context of the proposed model.

  12. Proceedings of the International Symposium on Quantum Biology and Quantum Pharmacology (14th) Held in Marineland, Florida on March 12-14 1987. Annual Sanibel Symposia (27th). Part 1.

    DTIC Science & Technology

    1987-01-01

    theoretical investigations in the field of aminothiol radioprotectors and anticancer drugs. The best known aminothiols are cysteamine and the natu- ral... cysteamine . methylated cysteamine . cysteine. AET, WR-1065. WR-2578 S. 1-102 S. 1-143. penicillamine, and GSH. by using the Randi6 graph topological method. We...8832/87/010149-17$04.00 150 VASILESCU AND VIANI H HVCYSEA "\\E V V AE H> N;C-- C- S.., HHHH AETI N, H H H1 H\\ V V METHYL-2- CYSTEAMINE H>N-- Cr-C,-- S--H

  13. Tunable electronic structures and optical properties of fluorenone-based molecular materials by heteroatoms.

    PubMed

    Song, Peng; Ma, Fengcai

    2010-02-11

    The ground-state and excited-state electronic structures as well as the tunable optical properties of a variety of newly designed fluorenone-based molecular materials have been theoretically investigated using density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods. The substitutes on the O atom in the carbonyl group of the fluorenone (FN) molecule with S (FN-C=S), Se (FN-C=Se), and Te (FN-C=Te) atoms can significantly influence their electronic structures, molecular orbitals, geometric conformations, and optical properties of fluorenone-based molecular materials. Due to the important difference of electronegativity for O, S, Se, and Te atoms in the same group, the ground-state dipole moment of these fluorenone-based molecular materials is gradually decreased in the order FN, FN-C=S, FN-C=Se, and FN-C=Te. At the same time, the ground-state bond length of the C=X (X refers O, S, Se, and Te) is gradually increased in the order of FN, FN-C=S, FN-C=Se, and FN-C=Te. Due to the different nature of the S(1) state for FN (pipi* character) and FN-C=S, FN-C=Se, and FN-C=Te (sigmapi* character), the excited-state dipole moment of FN in the S(1) state is dramatically increased in comparison with that in the ground state; however, the excited-state dipole moments of FN-C=S, FN-C=Se, and FN-C=Te are significantly diminished. In addition, the excited-state bond length of C=X (X refers O, S, Se, and Te) in the S(1) state is lengthened in comparison with that in the ground state due to the photoexcitation of the C=X bond FN, FN-C=S, FN-C=Se, and FN-C=Te. On the other hand, the energy level of the HOMO orbital is heightened and that of LUMO orbital is lowered with the introduction of heteroatoms in the order of S, Se, and Te. Consequently, the energy gap between LUMO and HOMO orbtials is gradually decreased in the order of the FN, FN-C=S, FN-C=Se, and FN-C=Te. Consequently, the calculated fluorescence wavelengths are strongly red-shifted from the

  14. Improved Dynamic Models for Air Combat Analysis.

    DTIC Science & Technology

    1982-07-01

    aircraft longitudinal axis ( T). a can be replaced as control variable by n (or CL) according to the following -rule: Below "corner velocity" defined as...Assuming that thrust is nearly aligned with aircraft longitudinal axis (aT P 0) and that angles of attack are not excessive (implying cos c s 1, and Tmax sin

  15. 7. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS '1929, WHITE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS '1929, WHITE RIVER BRIDGE, BUILT BY ARKANSAS HIGHWAY COMMISSION, DWIGHT BLACKWOOD, CHAIRMAN, JUSTIN MATTHEWS, J. LAN WILLIAMS, J.S. PARKS, SAM J. WILSON, COMMISSIONERS, C.S. CHRISTIAN, STATE HIGHWAY ENGINEER, IRA HEDRICK, INC., CONSULTING ENGINEERS, LIST & WEATHERLY, CONSTRUCTION CO.' - Newport Bridge, Spanning White River at State Highway 14, Newport, Jackson County, AR

  16. Codes and standards research, development and demonstration roadmap

    SciTech Connect

    None, None

    2008-07-22

    C&S RD&D Roadmap - 2008: This Roadmap is a guide to the Research, Development & Demonstration activities that will provide data required for Standards Development Organizations (SDOs) to develop performance-based codes and standards for a commercial hydrogen fueled transportation sector in the U.S.

  17. Supreme Court Strikes down a Gun Ban and Raises Questions for College Campuses

    ERIC Educational Resources Information Center

    Kelderman, Eric; Lipka, Sara

    2008-01-01

    The Supreme Court's landmark ruling overturning Washington, D.C.'s handgun ban could have implications for colleges that prohibit firearms on their campuses. Last month the court declared for the first time that the U.S. Constitution's Second Amendment protects an individual's right to keep a gun, not just the right of states to maintain armed…

  18. Coinfections of Multiple Virulent Adenoviral Species in Previously Vaccinated Patients

    DTIC Science & Technology

    2007-11-02

    C.S. 1991. End-joining of DNA fragments in adenovirus transfection of human cells. Virology 183:160-169. 15. Sambrook , J., Williams, J., Sharp...P.A., and Grodzicker, T. 1975. Physical mapping of temperature-sensitive mutations of adenoviruses. J. Mol. Biol. 97:369-390. 16. Sambrook , J

  19. 77 FR 44718 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-30

    ... S.A. Y CIA S.C.A., Cali, Colombia; c/o MIRACANA INMOBILIARIA QUILCHAO S.A. & CIA S.C.A., Cali... CIA S.C.S., Bogota, Colombia; c/o FARMACOOP, Bogota, Colombia; c/o GLAJAN S.A., Bogota, Colombia;...

  20. 78 FR 20389 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-04

    ..., Soraya, c/o DURATEX S.A., Bogota, Colombia; c/o MOR GAVIRIA Y CIA. S.C.S., Bogota, Colombia; c/o... Adriana, c/o CORDES CIA. LIMITADA, Cali, Colombia; Armenia, Quindio, Colombia; DOB 29 Jul 1975;...

  1. 75 FR 65557 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-25

    ... DECAFARMA S.A., Bogota, Colombia; c/o DROCARD S.A., Bogota, Colombia; c/o DROMARCA Y CIA. S.C.S., Bogota..., Colombia; c/o PRODUCTOS GALO Y CIA. LTDA., Bogota, Colombia; DOB 2 Apr 1951; Cedula No. 19134241...

  2. Underwater Acoustics and the U.S. Navy: A Preliminary Historical Bibliography. Volume 1. 1917-1946

    DTIC Science & Technology

    1983-12-16

    researchers in acoustics. A British historian, Dr. Willem Hackmann has written a history of underwater acoustics in the Royal Navy, which is in press; however...8217, Historical Records, 1911-1927, 1927-1942, R.G. 45, Nat. Arch. Same series as described above. - i. Edgar G. Oberlin Papers, Manuscripts Div., LoC. S. 5 - r

  3. Evaluation of Dam Decommissioning in an Ice-Affected River: Case Study

    DTIC Science & Technology

    2007-09-01

    Abdul-Mohsen 2005 and Kuby et al. 2005). Conyngham et al. (2006) provide an overview of the ecological and engi- neering aspects of dam decommissioning...2007) CRREL Ice Jam Database (http://www.crrel.usace.army.mil/ierd/ijdb/), accessed March 2007. Kuby , M.J., W.F. Fagan, C.S. ReVelle, W.L. Graf (2005

  4. Experimental Investigation of Transverse Supersonic Gaseous Injection Enhancement Into Supersonic Flow

    DTIC Science & Technology

    1996-12-01

    1 0 In combusting flows, Northam and Capriotti found the swept ramp design increased combustion efficiency and had less total temperature sensitivity...Greenberg, C. S. Byington and D. P. Capriotti , "Evaluation of Parallel Configurations for Mach 2 Combustion", Journal of Propulsion and Power, Vol. 8

  5. Radar Cross Section Visualization Using Sample Buffer Progressive Refinement Volume Rendering

    DTIC Science & Technology

    1993-12-01

    BUFFER PROGRESSIVE REFINEMENT VOLUME RENDERING THESIS Presented to the Faculty of the Graduate School of Engineering of the Air Force Institute of...Technology Air University In Partial Fulfillment of the Requirements for the Degree of Master of Science in Computer Engineering Alain L. M. Jones, B.S.C.S...Generator ................................................................................ 15 Rendering Engine

  6. Anger and Approach: Reply to Watson (2009) and to Tomarken and Zald (2009)

    ERIC Educational Resources Information Center

    Carver, Charles S.; Harmon-Jones, Eddie

    2009-01-01

    C. S. Carver and E. Harmon-Jones reviewed evidence consistent with the idea that anger arises from a behavioral approach system. Commentary on that article by A. J. Tomarken and D. H. Zald raised questions about the many elements involved in acts of approach and limitations on what information can be provided by electroencephalograms. Commentary…

  7. A Biophysico-Computational Perspective of Breast Cancer Pathogenesis and Treatment Response

    DTIC Science & Technology

    2007-03-01

    be easily assessed by monitoring morphogenesis using immunofluoresence and morphometric assessment markers (Sections III.E.1 and III.E.2; Debnath et...Ingber, D. E. (1997). Geometric control of cell life and death. Science 5317, 1425–1428. Chen, C. S., Mrksich, M., Huang, S., Whitesides, G. M., and Ingber

  8. 75 FR 34200 - Notice of Application for Approval of Discontinuance or Modification of a Railroad Signal System

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-16

    .... Applicant: Pan Am Railways, Mr. Timothy R. Kunzler, Chief Engineer, C&S, Iron Horse Park, North Billerica... (FML) of Pan Am Southern, LLC. (PAS). The applicant's corporate name is Springfield Terminal Railway... owned subsidiaries of Pan Am Railways, Inc. ST seeks approval of the discontinuance and removal of...

  9. Calculating Opto-Mechanically Induced Surface Acoustic Waves in a Silica Whispering Gallery Microresonator

    DTIC Science & Technology

    2011-10-01

    8217{O .. •• ,..... N :I: t:. > u c: ~ ::s a OJ ’- u. l • ] Optica l State Number ver~us Frequency to Produce SAW: A2imutnal Optica l Modes...618 and 606 Interact to Generate SAW Mode 12 ~ ------.--:: Optica l Mode State Number Ml 618 - 2 606 United States Military Academy Photonics

  10. Molecular Machine-Based Active Plasmonics

    DTIC Science & Technology

    2011-07-21

    C. S. Lin, M. Lu, T. Gao, T.J. Huang), J. Appl. Phys. 2010, 108, 043514. 33. Ordered Au nanodisk and nanohole arrays: fabrication and applications...Stoddart), J. Am. Chem. Soc. 2011, 133, 4538–4547. 41. Frequency-addressed tunable transmission in optically thin metallic nanohole arrays with

  11. Trajectories for Locomotion Systems: A Geometric and Computational Approach via Series Expansions

    DTIC Science & Technology

    2004-10-11

    ESAIM . Control , Optimisation & Calculus of Variations , Jan. 2004. Sub- mitted (c) S. Aranda, S. Mart́ınez, and F. Bullo, “On optimal sensor placement...Bullo, “Spatially-distributed coverage optimization and control with limited- range interactions,” ESAIM . Control , Optimisation & Calculus of Variations , Jan

  12. Food Allergy Concerns in Primary Classrooms: Keeping Children Safe

    ERIC Educational Resources Information Center

    Thelen, Peggy; Cameron, Elizabeth Ann

    2012-01-01

    Food-allergy awareness and management have only lately come to the forefront in early childhood settings, although advocacy organizations have been working on the issue for more than a decade. A national poll (C.S. Mott Children's Hospital 2009) asked parents with children in early education settings if they were aware of what their program does…

  13. 11. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS 'WHITE RIVER, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS 'WHITE RIVER, PETERSON & EARNHART, CONTRACTOR, ARKANSAS STATE HIGHWAY COMMISSION, DWIGHT H. BLACKWOOD, CHAIRMAN, C.S. CHRISTIAN, ENGINEER, 1931' - White River Bridge, Spanning White River at U.S. Highway 70, De Valls Bluff, Prairie County, AR

  14. High Penetration, Grid Connected Photovoltaic Technology Codes and Standards: Preprint

    SciTech Connect

    Basso, T. S.

    2008-05-01

    This paper reports the interim status in identifying and reviewing photovoltaic (PV) codes and standards (C&S) and related electrical activities for grid-connected, high-penetration PV systems with a focus on U.S. electric utility distribution grid interconnection.

  15. Commissioning and Characterization of a Dedicated High-Resolution Breast PET Camera

    DTIC Science & Technology

    2011-07-01

    detector design that is able to measure annihilation radiation coming from the PET tracer in 3 dimensions, using many 1 × 1 × 1 mm3 scintillation crystals. 2...Gonzalez, P. D. Olcott, A. Vandenbroucke, C. S. Levin Mixture Model for Fast Estimation of Positron Range 7 2. P. D. Reynolds, F. W. Lau, A. Vandenbroucke, C

  16. [Istanbul declaration on organ trafficking and transplant tourism].

    PubMed

    2009-08-01

    This is a translation into Spanish, done by Mario Uribe, M.D., F.A.C.S., and authorized by the Conference Organization, of the official statements signed by The Transplantation Society, The International Society of Nephrology and the representatives who participated at a WHO sponsored Conference held in Istambul, Turkey, April 30 to May 2, 2008.

  17. 48 CFR 5119.1003 - Purpose.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... competition. (ii) Demonstrate the existence of a sufficient number of small businesses and ESBs which meet the... BUSINESS AND SMALL DISADVANTAGED BUSINESS CONCERNS Small Business Competitiveness Demonstration Program 5119.1003 Purpose. (c)(S-90) The purpose of the Dredging Program is to— (i) Expand small business...

  18. Proof of concept studies to confirm the delivery of curcumin loaded solid lipid nanoparticles (C-SLNs) to brain.

    PubMed

    Kakkar, Vandita; Mishra, Anil Kumar; Chuttani, Krishna; Kaur, Indu Pal

    2013-05-20

    Having achieved a significant bioavailability of curcumin by its incorporation into SLNs (C-SLNs) during pharmacokinetic (32-155 times) and pharmacodynamic (3-4 times) studies, our intent was to proof their targeting to brain. Hence, fluorescent/confocal microscopy, biodistribution and gamma scintigraphy techniques were explored to observe the presence of C-SLNs in the brain. 1h post p.o administration of C-SLNs/free curcumin (C-S) to rats, blood was withdrawn, following which the animals were sacrificed and their harvested brains were frozen at -80°C. The obtained plasma and brain cryosections were observed for fluorescence under fluorescent/confocal microscope. Biodistribution study was performed using (99m)Tc-labeled C-SLNs and C-S in Balb/c mice after p.o. and i.v. administration and % radioactivity/g organ was recorded. Subsequent to this gamma scintigraphs of the New Zealand rabbits following similar treatments were performed. Presence of yellow fluorescent particles in plasma and brain indicated effective delivery of C-SLNs across the gut wall and the BBB. (Blood)AUCoral value for C-SLNs was 8.135 times greater than that for C-S, confirming a prolonged circulation of former. The ratio of blood AUCi.v. C-SLN/C-S in blood is ≤1 while the ratio in brain promisingly indicates 30 times higher preferential distribution of C-SLNs into brain confirming their direct delivery.

  19. Crystal structure of S-(4-methyl­benz­yl) piperidine­dithio­carbamate

    PubMed Central

    Rahima, Z. A.; Abdul Halim, Siti Nadiah; How, Fiona N.-F.

    2015-01-01

    The title compound, C14H19NS2, crystallizes in the thione form with the presence of a C=S bond. The piperidine ring adopts a chair conformation. The dihedral angle between the essentially planar di­thio­carbamate and p-tolyl fragments is 74.46 (10)° PMID:26396883

  20. 77 FR 3766 - PJM Interconnection, L.L.C.; Notice of Staff Technical Conference

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-25

    ... Energy Regulatory Commission PJM Interconnection, L.L.C.; Notice of Staff Technical Conference On... explore the issues presented by PJM Interconnection, L.L.C.'s (PJM) filing.\\1\\ Take notice that the... Commission's questions by February 10, 2012. \\1\\ PJM Interconnection, L.L.C., 137 FERC ] 61,204...

  1. 78 FR 62360 - PJM Interconnection, L.L.C.; Notice of Technical Conference

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-21

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission PJM Interconnection, L.L.C.; Notice of Technical Conference Federal Energy.... to approximately 1:00 p.m., to consider issues related to PJM Interconnection, L.L.C.'s...

  2. Achievement Motivation in High School: Contrasting Theoretical Models in the Classroom.

    ERIC Educational Resources Information Center

    Garcia-Celay, I. Montero; Tapia, J. Alonso

    1992-01-01

    Three models of achievement motivation in the classroom are contrasted. Results with 155 high school students suggest that the model of C. S. Dweck and E. S. Elliott offers a better explanation of the relationships among achievement motivation, attributions, emotional reactions, expectancies, and performance than do the other models. (SLD)

  3. Correction of the equilibrium temperature caused by slight evaporation of water in protein crystal growth cells during long-term space experiments at International Space Station.

    PubMed

    Fujiwara, Takahisa; Suzuki, Yoshihisa; Yoshizaki, Izumi; Tsukamoto, Katsuo; Murayama, Kenta; Fukuyama, Seijiro; Hosokawa, Kouhei; Oshi, Kentaro; Ito, Daisuke; Yamazaki, Tomoya; Tachibana, Masaru; Miura, Hitoshi

    2015-08-01

    The normal growth rates of the {110} faces of tetragonal hen egg-white lysozyme crystals, R, were measured as a function of the supersaturation σ parameter using a reflection type interferometer under μG at the International Space Station (NanoStep Project). Since water slightly evaporated from in situ observation cells during a long-term space station experiment for several months, equilibrium temperature T(e) changed, and the actual σ, however, significantly increased mainly due to the increase in salt concentration C(s). To correct σ, the actual C(s) and protein concentration C(p), which correctly represent the measured T(e) value in space, were first calculated. Second, a new solubility curve with the corrected C(s) was plotted. Finally, the revised σ was obtained from the new solubility curve. This correction method successfully revealed that the 2.8% water was evaporated from the solution, leading to 2.8% increase in the C(s) and C(p) of the solution.

  4. Different strategies for producing soluble form of natural common cytokine receptor gamma chain

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The common cytokine receptor ' chain ('c) plays an essential role in regulating lymphoid homeostasis and alterations in its structure causes severe immunodeficient diseases. Although soluble 'c (s'c) was first reported in the late 1990's, many questions still remain unanswered concerning the sheddi...

  5. Ocean Aerosol Measurements and Models in the Straits of Florida (The KEY-90 Experiment)

    DTIC Science & Technology

    1992-01-01

    EPfONE (Ifcluck Aft C`-" S. C Gathiman (619) 5531-1418 (~.f4 NSN 754 1 25S Stanarci form 298 fRACK ) UNCLASSIFIED PROCEED II S REPRINT Reprinted from...was kept to accommodate this type of use. Of course there is a semi-automatic method of obtaining these parameters which utilizes a computer - human

  6. 77 FR 125 - Findings of Research Misconduct

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-03

    ... (1) Yang, C.-S., Chuang, L.-Y., Ke, C.-H., Yang, C.-H., International Journal of Computer Science...., Baumgartner, C., Sittampalam, S., Lushington, G., International Journal of Computational Biology and Drug... HUMAN SERVICES Office of the Secretary Findings of Research Misconduct AGENCY: Office of the...

  7. Early age hydration and pozzolanic reaction in natural zeolite blended cements: Reaction kinetics and products by in situ synchrotron X-ray powder diffraction

    SciTech Connect

    Snellings, R.; Mertens, G.; Cizer, O.; Elsen, J.

    2010-12-15

    The in situ early-age hydration and pozzolanic reaction in cements blended with natural zeolites were investigated by time-resolved synchrotron X-ray powder diffraction with Rietveld quantitative phase analysis. Chabazite and Na-, K-, and Ca-exchanged clinoptilolite materials were mixed with Portland cement in a 3:7 weight ratio and hydrated in situ at 40 {sup o}C. The evolution of phase contents showed that the addition of natural zeolites accelerates the onset of C{sub 3}S hydration and precipitation of CH and AFt. Kinetic analysis of the consumption of C{sub 3}S indicates that the enveloping C-S-H layer is thinner and/or less dense in the presence of alkali-exchanged clinoptilolite pozzolans. The zeolite pozzolanic activity is interpreted to depend on the zeolite exchangeable cation content and on the crystallinity. The addition of natural zeolites alters the structural evolution of the C-S-H product. Longer silicate chains and a lower C/S ratio are deduced from the evolution of the C-S-H b-cell parameter.

  8. Developmental changes in mesophyll diffusion conductance and photosynthetic capacity under different light and water availabilities in Populus tremula: how structure constrains function.

    PubMed

    Tosens, Tiina; Niinemets, Ulo; Vislap, Vivian; Eichelmann, Hillar; Castro Díez, Pilar

    2012-05-01

    Finite mesophyll diffusion conductance (g(m) ) significantly constrains net assimilation rate (A(n) ), but g(m) variations and variation sources in response to environmental stresses during leaf development are imperfectly known. The combined effects of light and water limitations on g(m) and diffusion limitations of photosynthesis were studied in saplings of Populus tremula L. An one-dimensional diffusion model was used to gain insight into the importance of key anatomical traits in determining g(m) . Leaf development was associated with increases in dry mass per unit area, thickness, density, exposed mesophyll (S(mes) /S) and chloroplast (S(c) /S) to leaf area ratio, internal air space (f(ias) ), cell wall thickness and chloroplast dimensions. Development of S(mes) /S and S(c) /S was delayed under low light. Reduction in light availability was associated with lower S(c) /S, but with larger f(ias) and chloroplast thickness. Water stress reduced S(c) /S and increased cell wall thickness under high light. In all treatments, g(m) and A(n) increased and CO(2) drawdown because of g(m) , C(i) -C(c) , decreased with increasing leaf age. Low light and drought resulted in reduced g(m) and A(n) and increased C(i) -C(c) . These results emphasize the importance of g(m) and its components in determining A(n) variations during leaf development and in response to stress.

  9. Conceptual, Methodological, and Empirical Ambiguities in the Linkage between Anger and Approach: Comment on Carver and Harmon-Jones (2009)

    ERIC Educational Resources Information Center

    Tomarken, Andrew J.; Zald, David H.

    2009-01-01

    C. S. Carver and E. Harmon-Jones have made an important contribution to the understanding of anger, its linkage to higher order dimensions of emotion, and potential neurobiological substrates. The authors believe, however, that their model and future research conducted to test it would be improved by a more precise explication and parsing of the…

  10. 78 FR 30916 - CenterPoint Energy Bakken Crude Services, LLC; Notice of Petition for Declaratory Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-23

    ... gathering pipeline system that will gather crude oil produced from various points in Dunn and McKenzie Counties, North Dakota and transport it to an interconnection with Great Northern Gathering and Marketing, L.L.C.'s Watford Terminal, which is located in McKenzie County, North Dakota. Any person desiring...

  11. Shakespeare, The Tragedies: A collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Harbage, Alfred, Ed.

    One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Alfred Harbage, H. B. Charlton, Willard Farnham, H. T. Price, Donald A. Stauffer, Brents Stirling, Maynard Mack, Helen Gardner, C. S. Lewis, Alvin Kernan, Bernard Spivack, L. C. Knights, Francis Fergusson, G. Wilson…

  12. THE MOTT FOUNDATION CHILDREN'S HEALTH CENTER--THE WORLD OF STEPHEN SHAKER.

    ERIC Educational Resources Information Center

    Flint Board of Education, MI.

    THE C.S. MOTT FOUNDATION CHILDREN'S HEALTH CENTER WAS BUILT TO SERVE CHILDREN OF THOSE BORDERLINE FAMILIES WHOSE INCOMES PROHIBIT PRIVATE MEDICAL CARE YET MAKE THEM INELIGIBLE FOR DIRECT RELIEF OF ANY KIND. THE NEED FOR SUCH A CENTER WAS PROVED BY THE CHILDREN'S 18,000 VISITS ANNUALLY FOR HEALTH CARE. WHILE PROVIDING CARE FOR CHILDREN WAS THE MAIN…

  13. 6. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS '1930, WHITE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS '1930, WHITE RIVER BRIDGE, ARKANSAS HIGHWAY COMMISSION, DWIGHT BLACKWOOD, CHAIRMAN, JUSTIN MATTHEWS, J. LAN WILLIAMS, J.S. PARKS, SAM J. WILSON, COMMISSIONERS, C.S. CHRISTIAN, STATE HIGHWAY ENGINEER, IRA HEDRICK, INC., CONSULTING ENGINEERS, PARHAM CONT. CO., CONTRACTOR' - Augusta Bridge, Spanning White River at Highway 64, Augusta, Woodruff County, AR

  14. Hebbian Learning of Cognitive Control: Dealing with Specific and Nonspecific Adaptation

    ERIC Educational Resources Information Center

    Verguts, Tom; Notebaert, Wim

    2008-01-01

    The conflict monitoring model of M. M. Botvinick, T. S. Braver, D. M. Barch, C. S. Carter, and J. D. Cohen (2001) triggered several research programs investigating various aspects of cognitive control. One problematic aspect of the Botvinick et al. model is that there is no clear account of how the cognitive system knows where to intervene when…

  15. General characteristics of the diet of Trachinotus paitensis (Teleostei: Carangidae) from San Ignacio Lagoon, Baja California Sur, Mexico.

    PubMed

    Cruz Escalona, V H; Abitia Cárdenas, L A

    2004-03-01

    The food habits of Trachinotus paitensis, in San Ignacio Lagoon B.C.S., Mexico, were investigated. We observed that T. paitensis is carnivorous, feeding mainly on benthic invertebrates (the gastropods Anachis spp., Bittium spp., and the crustacean larvae). We concluded that T. paitensis is an opportunist predator that impacts mainly on epibenthic invertebrates.

  16. Control of Transitional and Turbulent Flows Using Plasma-Based Actuators

    DTIC Science & Technology

    2006-06-01

    Phenomena. Int. Jnl. for Num. Methods in Eng., 45:1849–1869, 1999.19P. Alpert . Implicit Filtering in Conjunction with Explicit Filtering. J. Comp. Phys...Flat Plate. NASA CR-187068, 1991.30D. Greenblatt, K.B. Paschal, C.S. Yao, and J. Harris . A separation control cfd validation test case part 2. zero

  17. 75 FR 10557 - Additional Designations, Foreign Narcotics Kingpin Designation Act

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-08

    ... INVERSIONES BUSTOS ARIZA Y CIA. S.C.S., Bogota, Colombia; c/o MODERNA EXPRESS TRANSPORTE DE CARGA LTDA... LOGISTICA Y TRANSPORTE NORVAL LTDA., Bogota, Colombia; Calle 135 No. 17-25 apto. 503, Bogota, Colombia; DOB... de Oro, Meta, Colombia; Matricula Mercantil No 00118073 (Colombia) . 57. LOGISTICA Y...

  18. Parametric Analysis of Combustion of Porous Medium.

    DTIC Science & Technology

    1985-12-01

    Desenvolvimento 2 Ministerio da Aeronautica Brasilia , Brazil 2. Centro Tecnico Aeroespacial 2 Ministerio da Aeronau ica Sao Jose dos Campos , SP , Brazil 12200 3...Major Antonio C. S. Serapiao , Brazilien air force 3 Centro Tecnico Aeroespacial Sao Jose dos Campos , SP , Brazil 12200 4. Associate Professor David

  19. Jane Austen: A Collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Watt, Ian, Ed.

    One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Virginia Woolf, C. S. Lewis, Edmund Wilson, Ian Watt, Alan D. McKillop, Reuben A. Brower, Marvin Mudrick, Mark Schorer, Arnold Kettle, Lionel Trilling, Kingsley Amis, Andrew H. Wright, Donald J. Greene, and D. W.…

  20. Experimental determination of bulk modulus of 14 A tobermorite using high pressure synchrotron X-ray diffraction

    SciTech Connect

    Oh, Jae Eun; Clark, Simon M.; Wenk, Hans-Rudolf; Monteiro, Paulo J.M.

    2012-02-15

    Using a diamond anvil cell, 14 A tobermorite, a structural analogue of calcium silicate hydrates (C-S-H), was examined by high-pressure synchrotron X-ray diffraction up to 4.8 GPa under hydrostatic conditions. The bulk modulus of 14 A tobermorite was calculated, K{sub o} = 47 GPa. Comparison of the current results with previous high pressure studies on C-S-H(I) indicates that: (1) the compression behavior of the lattice parameters a and b of 14 A tobermorite and C-S-H(I) are very similar, implying that both materials may have very similar Ca-O layers, and also implying that an introduction of structural defects into the Ca-O layers may not substantially change in-plane incompressibility of the ab plane of 14 A tobermorite; and (2) the bulk modulus values of 14 A tobermorite and C-S-H(I) are dominated by the incompressibility of the lattice parameter c, which is directly related to the interlayer spacing composed of dreierketten silicate chains, interlayer Ca, and water molecules.

  1. Confined Water Dissociation in Microporous Defective Silicates: Mechanism, Dipole Distribution, and Impact on Substrate Properties.

    SciTech Connect

    Manzano, Hegoi; Moeini, Sina; Marinelli, Francis; Van Duin, Adri C. T.; Ulm, Franz-Josef; Pellenq, Roland J. M.

    2012-01-01

    Interest in microporous materials has risen in recent years, as they offer a confined environment that is optimal to enhance chemical reactions. Calcium silicate hydrate (C-S-H) gel, the main component of cement, presents a layered structure with sub-nanometer-size disordered pores filled with water and cations. The size of the pores and the hydrophilicity of the environment make C-S-H gel an excellent system to study the possibility of confined water reactions. To investigate it, we have performed molecular dynamics simulations using the ReaxFF force field. The results show that water does dissociate to form hydroxyl groups. We have analyzed the water dissociation mechanism, as well as the changes in the structure and water affinity of the C-S-H matrix and water polarization, comparing the results with the behavior of water in a defective zeolite. Finally, we establish a relationship between water dissociation in C-S-H gel and the increase of hardness due to a transformation from a two- to a three-dimensional structure.

  2. Neither Fair nor Accurate: Research-Based Reasons Why High-Stakes Tests Should Not Be Used to Evaluate Teachers

    ERIC Educational Resources Information Center

    Au, Wayne

    2011-01-01

    Current and former leaders of many major urban school districts, including Washington, D.C.'s Michelle Rhee and New Orleans' Paul Vallas, have sought to use tests to evaluate teachers. In fact, the use of high-stakes standardized tests to evaluate teacher performance in the manner of value-added measurement (VAM) has become one of the cornerstones…

  3. Mid Infrared Polarized Light Scattering; Applications for the Remote Detection of Chemical and Biological Contaminations

    DTIC Science & Technology

    1992-01-01

    interferents such as diesel soots , fog oils, possess their own absorption moieties. Thus, the susceptible Mueller elements can single out the analyte on a...ANGLESTP) 3 4 C S C THI MOD CAPUtRES THE DATA FOR THE POLARIZERS IN POSITION 6 C VERnCAI43 dog. TWO ARRAYS ARE USED TO SAVE THE DATA. 7 C IWAY - 6 A

  4. John Donne: A Collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Gardner, Helen, Ed.

    One of a series of works aimed at presenting contemporary opinion on major authors, this collection includes essays by Helen Gardner, George Saintsbury, Herbert J. C. Grierson, Pierre Legouis, William Empson, Mario Praz, J. E. V. Crofts, C. S. Lewis, Cleanth Brooks, J. B. Leishman, Evelyn M. Simpson, Louis L. Martz, and A. J. Smith--all dealing…

  5. Characterization, Sources and Sinks of Colored Detrital Matter in the Ocean

    DTIC Science & Technology

    1999-09-30

    representative of a new green algal class (Picocystophyceae cl. nov., Chlorophyta), J. Phycology . Roessler, C.S., C.W. Culbertson, S.L. McLeroy...Etheridge, R. Goericke, and R.S. Ormeland. subm. Physiological characteristics of a novel chlorophyte isolated from the haloalkaline Mono Lake, CA., J. Phycology .

  6. Research Using ASDC Data Products

    Atmospheric Science Data Center

    2013-04-18

    ... use with PICASSO-CENA lidar data," (PDF 4MB) Stuart A. Young, C.S.I.R.O. Atmospheric Research, Aspendale, VIC, Australia. ... data sets initially created for CERES SARB validation (Dr. Thomas Charlock, Lead Scientist) CERES/ARM/GEWEX Experiment (CAGEX) ...

  7. 20 CFR 645.212 - Who may be served under the general eligibility and noncustodial parent eligibility (primary...

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...); or (c) (S)he is a noncustodial parent of a minor child if: (1) The noncustodial parent is: (i...; or (iv) The minor child is receiving or eligible for assistance under the Food Stamp program, the Supplemental Security Income program, Medicaid, or the Children's Health Insurance Program; and (3)...

  8. Genetic mapping of QTLs associated with seed macronutrients accumulation in 'MD96-5722' by 'Spencer' recombinant inbred lines of soybean

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Research of genetic mapping of QTLs for macronutrient accumulation in soybean seed is limited. Therefore, the objective of this research was to identify QTLs related to macronutrients (N, C, S, P, K, Ca, and Mg) in seeds in 92 F5:7 recombinant inbred lines developed from a cross between MD 96-5722 (...

  9. WIPCast: Probabilistic Forecasting for Aviation Decision Aid Applications

    DTIC Science & Technology

    2011-06-01

    Using Geostatistical Model Averaging and Local Bayesian Model Averaging. Submitted to Mon. Wea. Rev. Mass, C., S. Joslyn, J. Pyle, P. Tewson, T...forecasting: The Geostatistical Output Perturbation (GOP) method (with Discussion). Journal of the American Statistical Association, 99, 575-590. Hamill

  10. The Role(s) of Heparan Sulfate Proteoglycan(s) in the wnt-1 Signaling Pathway

    DTIC Science & Technology

    1998-08-01

    and invertebrates , and are initiated by formation of a polysaccharide chain consisting of (D-glucuronic acido....N-acetyl-D- glucosamine...M.C. Ellis, T.B. Kornberg, and C.S. Goodman. 1989. Expression of Engrailed protein in arthropods, annelids and chordates . Cell 58: 955-968. Patel N.H

  11. Mental Muscularity: Shaping Implicit Theories of Intelligence via Metaphor

    ERIC Educational Resources Information Center

    Anderson, Scott Victor

    2009-01-01

    Motivating students is a central challenge for many teachers, particularly in subjects students commonly perceive as "impenetrable," such as statistics. One line of motivation research by C.S. Dweck (2006) has found that when students believe their intelligence is malleable (i.e., a growth mindset) and that learning is a function of effort, they…

  12. Co-generated fast pyrolysis biochar mitigates green-house gas emissions and increases carbon sequestration in temperate soils

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Biochar (BC) is a product of thermochemical conversion of biomass via pyrolysis, together with gas (syngas), liquid (bio-oil), and heat. Fast pyrolysis is a promising process for bio-oil generation, which leaves 10-30% of the original biomass as char. When applied to soils, BC may increase soil C s...

  13. Interference Aware Routing Using Spatial Reuse in Wireless Sensor Networks

    DTIC Science & Technology

    2013-12-01

    assigned to transmission group l . The maximization of the throughput z is ,N il ll L N i c s x z l L Tρ ∈≤ ∀ ∈ ∑ (4.10) subject to the...System Sciences (HICSS), 2000, pp. 1–10. [16] S. Lindsey and C. Raghavendra, “ PEGASIS : Power-Efficient Gathering in Sensor Information Systems

  14. 32 CFR 246.3 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... STARS AND STRIPES (S&S) NEWSPAPER AND BUSINESS OPERATIONS § 246.3 Definitions. (a) Adverse Conditions... publisher of the Stars and Stripes produced by that organization. (c) S&S Management Action Group (MAG) and... issues. Neither the DoD S&S Steering Committee, nor the S&S MAG, involve themselves in Stars and...

  15. 32 CFR 246.3 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... STARS AND STRIPES (S&S) NEWSPAPER AND BUSINESS OPERATIONS § 246.3 Definitions. (a) Adverse Conditions... publisher of the Stars and Stripes produced by that organization. (c) S&S Management Action Group (MAG) and... issues. Neither the DoD S&S Steering Committee, nor the S&S MAG, involve themselves in Stars and...

  16. 32 CFR 246.3 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... STARS AND STRIPES (S&S) NEWSPAPER AND BUSINESS OPERATIONS § 246.3 Definitions. (a) Adverse Conditions... publisher of the Stars and Stripes produced by that organization. (c) S&S Management Action Group (MAG) and... issues. Neither the DoD S&S Steering Committee, nor the S&S MAG, involve themselves in Stars and...

  17. 32 CFR 246.3 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... STARS AND STRIPES (S&S) NEWSPAPER AND BUSINESS OPERATIONS § 246.3 Definitions. (a) Adverse Conditions... publisher of the Stars and Stripes produced by that organization. (c) S&S Management Action Group (MAG) and... issues. Neither the DoD S&S Steering Committee, nor the S&S MAG, involve themselves in Stars and...

  18. 32 CFR 246.3 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... STARS AND STRIPES (S&S) NEWSPAPER AND BUSINESS OPERATIONS § 246.3 Definitions. (a) Adverse Conditions... publisher of the Stars and Stripes produced by that organization. (c) S&S Management Action Group (MAG) and... issues. Neither the DoD S&S Steering Committee, nor the S&S MAG, involve themselves in Stars and...

  19. Protect Yourself! How To Minimize Your Risk of an IRS Audit.

    ERIC Educational Resources Information Center

    Lukaszewski, Thomas; Moser, Barbara

    1998-01-01

    Shows how to minimize risk of an IRS audit and how to avoid traps caused by improper documentation and reporting requirements. Outlines the most likely audit areas for business tax returns. These include cash business; for sole proprietors, Schedule C; S and C corporation salary issues; shareholder loans; contractors versus employees; fringe…

  20. A Description of What Charles Sanders Peirce Meant by Truth and an Application of His Doctrine of Truth to Rhetorical Theory.

    ERIC Educational Resources Information Center

    Timmis, John H., III

    This paper investigated the doctrine of truth of the pragmatic philosopher C.S. Peirce. The ontological and epistemological bases of the doctrine are described, and the status of truth, reality, investigation, and belief are drawn from these bases. The results indicate that Peirce's doctrine could be productively related to rhetorical theory,…

  1. Semiotic Fundamentals of Information Processing in Human Brain

    DTIC Science & Technology

    2002-08-01

    Collected Papers of Charles Sanders Peirce . Harvard Univ. Press., Cambridge, MA; Morris C. (1971). Writings on the General Theory of Signs, ed. Th. A. Sebeok. The Hague: Mouton. ...Longman, London, 1981. 36 Sebeok, T.A. 1995, Sign: An Introduction to Semiotics. Univ. Toronto Press, Toronto, Canada. 37 Peirce , C.S. (1935-66

  2. Metaphoric Displays for Dynamic Tasks

    DTIC Science & Technology

    1987-03-01

    Interaction. Peirce , C. (1960). Collected paeers of Charles Sanders Peirce , Vol. i, Elements of loaic. Cambridge, MA: Harvard University Press. Spiro...representations is an ongoing processl. C. S. Peirce (1960) has provided a systematic theory of signs which 1We must also be careful to d~istinguish

  3. Broadening the Notion of Text: An Exploration of an Artistic Composing Process.

    ERIC Educational Resources Information Center

    Smagorinsky, Peter; Coppock, John

    In language arts classes a "composition" generally refers to a written text. Semiotic theory based on C. S. Peirce's work suggests that writing is only one of many forms of composition available for mediating thought and activity. According to J. V. Wertsch (1991), writing should be one tool in a tool kit of mediational means available…

  4. Multiple Model-Based Robot Control: Development and Initial Evaluation

    DTIC Science & Technology

    1988-12-01

    control. Proc. of Winter~ Annual Mleeting of ASPJE, Miami Beach, Florida, November 1985. GW8O. C. S. Greene and A. S. Wiliski. An analysis of the multiple...1400, 1987. SLC,78. T. W~erstrnm, L. Ljtmng, and 1. Gustavsson . A theoretical analysis of recursive identification methods. A utomnatica, 1-1:231-244

  5. CaCl 2 -Accelerated Hydration of Tricalcium Silicate: A STXM Study Combined with 29 Si MAS NMR

    DOE PAGES

    Li, Qinfei; Ge, Yong; Geng, Guoqing; ...

    2015-01-01

    Tmore » he effect of calcium chloride (CaCl 2 ) on tricalcium silicate (C 3 S) hydration was investigated by scanning transmission X-ray microscopy (STXM) with Near Edge X-ray Absorption Fine Structure (NEXAFS) spectra and 29 Si MAS NMR. STXM is demonstrated to be a powerful tool for studying the chemical composition of a cement-based hydration system.he Ca L 3,2 -edge NEXAFS spectra obtained by examining C 3 S hydration in the presence of CaCl 2 showed that this accelerator does not change the coordination of calcium in the calcium silicate hydrate (C-S-H), which is the primary hydration product. O K-edge NEXAFS is also very useful in distinguishing the chemical components in hydrated C 3 S. Based on the Ca L 3,2 -edge spectra and chemical component mapping, we concluded that CaCl 2 prefers to coexist with unhydrated C 3 S instead of C-S-H. In Si K-edge NEXAFS analysis, CaCl 2 increases the degree of silicate polymerization of C-S-H in agreement with the 29 Si CP/MAS NMR results, which show that the presence of CaCl 2 in hydrated C 3 S considerably accelerates the formation of middle groups ( Q 2 ) and branch sites ( Q 3 ) in the silicate chains of C-S-H gel at 1-day hydration.« less

  6. Metabolic programming of offspring by vitamin B12, folate imbalance during pregnancy

    Technology Transfer Automated Retrieval System (TEKTRAN)

    With two reports in the current issue of Diabetologia, C. S. Yajnik and his international cast of collaborators have created conceptual bridges between some of the most important global public health challenges of our time: obesity (or is it adiposity?), fetal or early life origins of adult disease,...

  7. Physical observations and taxonomy of asteroids

    NASA Technical Reports Server (NTRS)

    Morrison, D.

    1978-01-01

    Physical asteroid observations are summarized and the classification scheme to describe asteroid surfaces in relation to mineralogical composition is detailed. The principle classes, distinguished on the basis of a number of parameters involving albedo and color, are called C, S, and M.

  8. 20 CFR 645.212 - Who may be served under the general eligibility and noncustodial parent eligibility (primary...

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... individuals (as well as children of noncustodial parents) exempted from the time limits due to hardship under section 408(a)(7)(C) of the Act or due to a waiver because of domestic violence under section 402(a)(7) of...); or (c) (S)he is a noncustodial parent of a minor child if: (1) The noncustodial parent is:...

  9. Current Sports: Medicine Issues. Annual Safety Education Review--1973.

    ERIC Educational Resources Information Center

    Craig, Timothy T., Ed.

    This document is a collection of papers whose theme is sports safety. Section one, "Government Interest in Sports Safety," includes an article on Washington, D.C.'s focus on sports safety. Section two, "Medical Aspects of Safety in Sports," includes articles regarding the medical basis of restriction from athletics, orthopaedic restrictions, and…

  10. The Emergence of Frequency Effects in Eye Movements

    ERIC Educational Resources Information Center

    Vanyukov, Polina M.; Warren, Tessa; Wheeler, Mark E.; Reichle, Erik D.

    2012-01-01

    A visual search experiment employed strings of Landolt "C"s to examine how the gap size of and frequency of exposure to distractor strings affected eye movements. Increases in gap size were associated with shorter first-fixation durations, gaze durations, and total times, as well as fewer fixations. Importantly, both the number and duration of…

  11. Symposium on Turbulence (13th) Held at Rolla, Missouri on September 21- 23, 1992

    DTIC Science & Technology

    1992-09-01

    empirical basis by Ahmed (1969), Cedergren (1977), Soni (1978), and Volker (1969), most of the resulting equations is dimensional and have limited...HY6, 6883, Nov.; 1847-1857. Cedergren , H.R., 1977, "Seepage, Drainage and Flow Nets", J. Wiley and Sons, New York, S34 pp. Dosai, C. S.: Seepage

  12. Explicit Sex--Liberation or Exploitation: The Rise and Fall of Topless Radio

    ERIC Educational Resources Information Center

    Carlin, John C.

    1976-01-01

    Defines "topless" radio as live, midday, female-only, two-way talk show format as originated by Station KGBS-AM/FM, Los Angeles, and examines F. C. C.'s struggles to eliminate such programing which they deemed obscene and indecent. (MH)

  13. Determination of uranium(VI) sorbed species in calcium silicate hydrate phases: a laser-induced luminescence spectroscopy and batch sorption study.

    PubMed

    Tits, Jan; Geipel, Gerhard; Macé, Nathalie; Eilzer, Manuela; Wieland, Erich

    2011-07-01

    Batch sorption experiments and time-resolved luminescence spectroscopy investigations were carried out to study the U(VI) speciation in calcium silicate hydrates for varying chemical conditions representing both fresh and altered cementitious environments. U(VI) uptake was found to be fast and sorption distribution ratios (R(d) values) were very high indicating strong uptake by the C-S-H phases. In addition a strong dependence of pH and solid composition (Ca:Si mol ratio) was observed. U(VI) luminescence spectroscopy investigations showed that the U(VI) solid speciation continuously changed over a period up to 6 months in contrast to the fast sorption kinetics observed in the batch sorption studies. Decay profile analysis combined with factor analysis of series of spectra of U(VI)-C-S-H suspensions, recorded with increasing delay times, revealed the presence of four luminescent U(VI) species in C-S-H suspensions, in agreement with the batch sorption data. Along with the aqueous UO(2)(OH)(4)(2-) species and a Ca-uranate precipitate, two different sorbed species were identified which are either bound to silanol groups on the surface or incorporated in the interlayer of the C-S-H structure.

  14. [Design and trial of computer test system for experiment courses of human parasitology].

    PubMed

    Liao, Hua; Ling, Jin; Su, Shui-Lian; Zeng, Jie; Xie, Qiong-Jun

    2011-06-01

    Based on the traditional experimental test of human parasitology, a reform was conducted to avoid the shortage of specimens and a disclosure of test questions. An experimental test system of human parasitology based on client/server (C/S) structure was therefore developed. This practicable system can increase the efficiency and fairness of examination and reduce cost.

  15. Research on Aero-Thermodynamic Distortion Induced Structural Dynamic Response of Multi-Stage Compressor Blading.

    DTIC Science & Technology

    1984-06-01

    8217 ." :’ ;’:::::. ====================================:: : " :.; :- ..’./.’ " """ ""..’’: : " ’. ’’. -. - ..: " ’] -’: ".."-".:"’. -" . . . .’.- .."... . . "".".".’.-.. . . . .. , Stlg30. Mach.• 6 .. - 2500- Ph oseO 8000- S • 30 C/S.*OO Phase

  16. The emission of α,ω-diphenylpolyenes: A model involving several molecular structures

    NASA Astrophysics Data System (ADS)

    Catalán, Javier

    2007-05-01

    Available photophysical evidence for the emission of α,ω-diphenylpolyenes is shown to be consistent with a previously reported model [J. Catalán, J.L.G. de Paz, J. Chem. Phys. 124 (2006) 034306] involving two electronically excited molecular structures of 1B u and C s symmetry, respectively. The 1B u structure is produced by direct light absorption from the all- trans form of the α,ω-diphenylpolyene in the ground state and its emission exhibits mirror symmetry with respect to the absorption of the compound. On the other hand, the C s structure is generated from the 1B u structure of the α,ω-diphenylpolyene by rotation about a C-C single bond in the polyene chain, its emission being red-shifted with respect to the previous one and exhibiting markedly decreased vibrational structure. At room temperature, both emissions give the excitation spectrum, which are ascribed to the first absorption band for the compound. It is shown that some polyenes may exist in more than one structure of C s symmetry in the excited electronic state with lower energy than that of the 1B u state, from which the C s structures are produced. Hence, more than one electronic structure may be involved in the deactivation processes of the 1B u state, which is initially populated upon photo-excitation of the polyene molecule in the ground electronic state.

  17. 78 FR 26352 - Gulf South Pipeline Company, LP; Supplemental Notice of Intent To Prepare an Environmental...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-06

    ... South) in Jasper, Forrest, Perry, Greene, George, and Jackson Counties, Mississippi and Mobile County... southern terminus of Petal Gas Storage, L.L.C.'s transmission facilities in Forrest County, Mississippi and..., Alabama. In addition, Gulf South would construct 3 new compressor stations located in Forrest...

  18. Gentrifying Water and Selling Jim Crow.

    ERIC Educational Resources Information Center

    Williams, Brett

    2002-01-01

    Explores the gentrification of Washington, D.C.'s Anacostia watershed, tracing the projects of federal and local government to devitalize and demolish living black relationships and institutions while reifying lost, invented, or imagined communities. Explores connections among capital, community, culture, and state power. Examines problems in the…

  19. The Ethics of the Posse Comitatus Act: How Law and Policy Affect U.S. Marine Corps Support to Law Enforcement

    DTIC Science & Technology

    2011-05-02

    Fuerte , 428 U.S. 543 (1976). 60 10 U.S.C.S. § 802 (LexisNexis 2011) [United States Code Service]. 61 Chief ofNaval Operations Instruction (OPNA VINST...United States v. Martinez- Fuerte , 428 U.S. 543 (1976). United States v. Montoya de Hemandez, 4 73 U.S. 531 (1985). United States v. Roberts, 779

  20. A Survey of Commonly Applied Methods for Software Process Improvement

    DTIC Science & Technology

    1994-02-01

    cannot be allowed to fail. Recent disasters related to software failures include the soft- ware malfunction of the Therac -25, a device for destroying...Turner, C.S., "An Investigation of the Therac - 25 Accidents," IEEE Computer, July, 1993. [Musa 75] Musa, J. D., ’A Theory of Software Reliability and

  1. Software Fault Tree Analysis of Concurrent Ada Processes

    DTIC Science & Technology

    1994-09-01

    excerpt from the investigation into the Therac -25 accidents: It is clear from the AECL (Atomic Energy of Canada Limited) documentation on the...Publishing Co., Inc., New York, N.Y., 1988 25. Leveson, N.G and Turner, C.S., An Investigation of the Therac -25 Accidents, IEEE Computer, July 1993

  2. Report of the Hydrographic Service Royal Australian Navy for the Year Ended 30th June 1983, Issue Number 19.

    DTIC Science & Technology

    1983-01-01

    of Mineral Resources, Geology and Geophysics C.S.I.R.O. Division of Fisheries and Oceanography Department of Administrative Services, Canberra The...Aust. Survey Office, Queensland Port of Brisbane Authority Bundaberg Hi., uour Board, Queensland Cairns Harboui Board. Queensland Gladstone Harbour

  3. Report of the Hydrographic Service Royal Australian Navy for the Year ended 30th June 1985, Issue Number 21.

    DTIC Science & Technology

    1985-01-01

    Authority Bundaberg Harbour Board. Queensland Cairns Harbour Board, Queensland Gladstone Harbour Board, Queensland Mackay Harbour Board, Queensland...Director of National Mapping for National Mapping Council (22) Bureau of Mineral Resources, Geology and Geophysics -- C.S.I.R.O Division of Fisheries and

  4. 47 CFR 87.199 - Special requirements for 406.0-406.1 MHz ELTs.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... contain as an integral part a homing beacon operating only on 121.500 MHz that meets all the requirements... MHz homing beacon must have a continuous duty cycle that may be interrupted during the transmission of... Beacon Type Approval Standard (C/S T.007). Additionally, an independent test facility must certify...

  5. Mental Health Care: Who's Who

    MedlinePlus

    ... degree in social work (M.S.W.); Licensed Clinical Social Workers (L.C.S.W.) have additional supervised training and clinical work experience. Licensed Professional Counselor: Master’s degree in psychology, counseling or a related field. Mental Health Counselor: ...

  6. Information Brochure.

    DTIC Science & Technology

    1985-08-01

    Estimation of Pungency in Onions. W. E. Badcock. MR/37 The Effects of the Antioxidant Butylated Hydroxy Toluene on the Rat. MR/38 Effects of Temperature and...Combat Rations. S. W. C. S-mith & Rosemary C. Unwin. MR/4O The Loss of Pungency in Dehydrated Onion During Storage. W. E. Badcock. MR /41 Canning of

  7. Metastable Polymeric Nitrogen From N2H2 Alloys

    DTIC Science & Technology

    2008-12-01

    pressure gas system described elsewhere [Mao et aI, 1986]. Raman spectra were obtained from an Ar- ion laser operating at 514.5 nm with an optical...G., 1966: Electronic Spectra and Electronic Structure of Polyatomic Molecules (van Nostrand, New York, pg. 416. Iota, Y., Yoo, C.-S., Klepeis, J.-H

  8. The Promise and Practice of Pragmatism-Based Music Education in Democratic Societies

    ERIC Educational Resources Information Center

    Goble, J. Scott

    2013-01-01

    In his book, "What's So Important about Music Education?" (2010), Goble J. Scott argues from a foundation of C. S. Peirce's pragmatist philosophy that school music education that enables students to understand and engage with the musical practices (or "praxes") of different cultural communities in terms of their…

  9. Salt-induced conformation and interaction changes of nucleosome core particles.

    PubMed Central

    Mangenot, Stéphanie; Leforestier, Amélie; Vachette, Patrice; Durand, Dominique; Livolant, Françoise

    2002-01-01

    Small angle x-ray scattering was used to follow changes in the conformation and interactions of nucleosome core particles (NCP) as a function of the monovalent salt concentration C(s). The maximal extension (D(max)) of the NCP (145 +/- 3-bp DNA) increases from 137 +/- 5 A to 165 +/- 5 A when C(s) rises from 10 to 50 mM and remains constant with further increases of C(s) up to 200 mM. In view of the very weak increase of the R(g) value in the same C(s) range, we attribute this D(max) variation to tail extension, a proposal confirmed by simulations of the entire I(q) curves, considering an ideal solution of particles with tails either condensed or extended. This tail extension is observed at higher salt values when particles contain longer DNA fragments (165 +/- 10 bp). The maximal extension of the tails always coincides with the screening of repulsive interactions between particles. The second virial coefficient becomes smaller than the hard sphere virial coefficient and eventually becomes negative (net attractive interactions) for NCP(145). Addition of salt simultaneously screens Coulombic repulsive interactions between NCP and Coulombic attractive interactions between tails and DNA inside the NCP. We discuss how the coupling of these two phenomena may be of biological relevance. PMID:11751321

  10. Hyperbolic Conservation Laws with Umbilic Points I

    DTIC Science & Technology

    1992-08-01

    del problema di Cauchy Universitih di Roma, Rendiconti di Matematica, 14, 382-387 (1955). [DCL] Ding, X., Chen, G.-Q., and Luo, P.: Convergence of the... Universidade Cat6lica do Rio de Janeiro, Ph. D. Thesis (in Portuguese), 1989. [Mo! Morawetz, C. S. : On a Weak Solution for a Transonic Flow Problem, Comm

  11. The Effects of Cooling Mode on Precipitation and Mechanical Properties of a Ti-Nb Microalloyed Steel

    NASA Astrophysics Data System (ADS)

    Hu, Zhangwei; Xu, Guang; Yang, Hailin; Zhang, Chen; Yu, Ru

    2014-12-01

    Laboratory experiments of a high-strength Ti-Nb microalloyed steel were conducted with two cooling modes, i.e., a large (35 °C s-1) cooling rate in the initial stage followed by slow (8.5 °C s-1) cooling rate (termed as FFC) and a slow (8.5 °C s-1) cooling rate in the initial stage followed by large (35 °C s-1) cooling rate (LFC) during cooling process. Based on the results of laboratory experiments, an industrial trial was performed with similar steel on a continuous hot strip production mill. The grain size in LFC sample (2.83 μm) is smaller than that in FFC sample (3.80 μm), and the volume fraction of precipitates in LFC sample (1.04%) is more than that in FFC sample (0.81%). Both results of laboratory experiments and industrial tests confirm that the strengthening effect of the LFC mode is much better than that of the FFC mode from the viewpoints of both fine-grain strengthening and precipitation strengthening. The present study provides a new approach to improve the property of microalloyed steels produced by continuous hot rolling technology.

  12. The Influence of Psycholinguistic Variables on Articulatory Errors in Naming in Progressive Motor Speech Degeneration

    ERIC Educational Resources Information Center

    Code, Chris; Tree, Jeremy; Ball, Martin

    2011-01-01

    We describe an analysis of speech errors on a confrontation naming task in a man with progressive speech degeneration of 10-year duration from Pick's disease. C.S. had a progressive non-fluent aphasia together with a motor speech impairment and early assessment indicated some naming impairments. There was also an absence of significant…

  13. Type 1 Hot Corrosion Furnace Testing and Evaluation.

    DTIC Science & Technology

    1982-10-01

    Mixed Temperature Mode Burner Rig Test, Aprigliano, L. F., pp. 6-7, September 1980. 18. Giggins, C. S. and Pettit, F. S ., op . cit. 19. David W. Taylor...X. and Duhl, D. N., op. cit. 24. Green, K. A. and Nichols, E. S ., op . cit. 25. Aprigliano, L. F., op. cit. 26. Green, K. A. and Nichols, E. S ., op . cit

  14. Battle Command Staff Training

    DTIC Science & Technology

    1992-12-01

    collective performance. There are a variety of ideas that need attention, ranging Lvm how * staffs should operate vertically , how to measure staff...4-12 Preparation for Vertical BCST .........................................lC S...1.1-1 Appendix 1.2- Vertical BCST-Fire Support ........................................ 1.2-1 Appendix 1.3- Conceptual Innovations in Battle

  15. UG311, An Oncofetal Marker Lost with Prostate Cancer Progression

    DTIC Science & Technology

    2001-04-01

    i~iit,• S... -{ $. .. .. ,, . .. .. . . .... . .. . ... . >FIGURE THE IGF AXIS IN THE DEVELOPMENT AND PROGRESSION OF PROSTATE CANCER. Christopher W...19. 55. Chan, J.M., Stampfer , M.J., Giovannucci, E., Gann, P.H., et al. 1998, Science, 279, 563. 56. Wolk, A., Mantzoros, C.S., Andersson, S.O

  16. Studies on the starch-water interactions between partially gelatinized corn starch and water during gelatinization.

    PubMed

    Fu, Zong-Qiang; Wang, Li-Jun; Zou, Hui; Li, Dong; Adhikari, Benu

    2014-01-30

    The effect of moisture content on the interactions between water and partially gelatinized starch during gelatinization process was investigated. The interactions were probed using differential scanning calorimetry (DSC). The starch samples were partially gelatinized at 25°C (S25), 64°C (S64), 68°C (S68) and 70°C (S70) and the moisture contents were varied from 25% to 78% (w/w). The G endotherm was not observed and only the M1 endotherm was observed in S64, S68 and S70 in the entire moisture content range. The G endotherm was not observed and only the M1 endotherm was observed at higher peak temperature in S25 when the moisture content was below 30% (w/w). The melting temperature of M2 endotherm in S70 was the highest among all the samples tested in the entire moisture content range. At water content>30% (w/w), S68 and S70 had lower amount of unfreezable water, while S64 had higher amount of unfreezable water.

  17. Comprehensive Development Program of Hunter-Killer Peptides for Prostate Cancer

    DTIC Science & Technology

    2005-05-01

    proliferation by terbinafine . Int J Cancer, 111: 51-59, 2004. Hsu, C. S., Ross, B. D., Chrisp, C. E., Derrowm S. Z., Charles, L. G., Pienta, K. J., Greenberg...by terbinafine . Int J Cancer, 111: 51-59, 2004. 9. Curnis, F., Sacchi, A., Borgna, L., Magni, F., Gasparri, A., and Corti, A. Enhance- ment of tumor

  18. The Green and Burning Tree: On the Writing and Enjoyment of Children's Books.

    ERIC Educational Resources Information Center

    Cameron, Eleanor

    This collection of 12 critical essays--written for teachers, librarians, students, and parents--comments on the style, characterization, sense of wonder, and sense of reality in children's books. Specific subjects covered are (1) the fantasy worlds of Andersen, Beatrix Potter, Walter de la Mare, C. S. Lewis, Lewis Carroll, and J. R. R. Tolkien;…

  19. Summer Booklist.

    ERIC Educational Resources Information Center

    And Others; Heins, Ethel L.

    1979-01-01

    Lists and annotates new books for children, arranged according to the following categories: picture books; stories for younger, for intermediate, and for older readers; folklore and mythology; poetry and song; and nonfiction. A book about C. S. Lewis and J. R. R. Tolkien, of interest to adults, is also annotated. (GT)

  20. Role-Play Technique as an Antecedent of Performance in English Language: Evidence from Secondary Schools in Wareng District, Uasin Gishu County, Kenya

    ERIC Educational Resources Information Center

    Julius, Kemboi; Osman, Ahmed

    2015-01-01

    In Kenya, there is a national concern over English language dismal performance over the years in Kenya Certificate of Secondary Education (K.C.S.E). Blame has been put on teachers of English language for relying on techniques that favor them at the expense of their students. This article therefore sought to assess the use of role-play technique as…

  1. High efficiency n-Si/ p-Cu2O core-shell nanowires photodiode prepared by atomic layer deposition of Cu2O on well-ordered Si nanowires array

    NASA Astrophysics Data System (ADS)

    Kim, Hangil; Kim, Soo-Hyun; Ko, Kyung Yong; Kim, Hyungjun; Kim, Jaehoon; Oh, Jihun; Lee, Han-Bo-Ram

    2016-05-01

    A highly efficient n-Si/ p-Cu2O core-shell (C-S) nanowire (NW) photodiode was fabricated using Cu2O grown by atomic layer deposition (ALD) on a well-ordered Si NW array. Ordered Si nanowires arrays were fabricated by nano-sphere lithography to pattern metal catalysts for the metal-assisted etching of silicon, resulting in a Si NW arrays with a good arrangement, smooth surface and small diameter distribution. The ALD-Cu2O thin films were grown using a new non-fluorinated Cu precursor, bis(1-dimethylamino-2-methyl-2-butoxy)copper (C14H32N2O2Cu), and water vapor (H2O) at 140°C. Transmission electron microscopy equipped with an energy dispersive spectrometer confirmed that p-Cu2O thin films had been coated over arrayed Si NWs with a diameter of 150 nm (aspect ratio of ˜7.6). The C-S NW photodiode exhibited more sensitive photodetection performance under ultraviolet illumination as well as an enhanced photocurrent density in the forward biasing region than the planar structure diode. The superior performance of C-S NWs photodiode was explained by the lower reflectance of light and the effective carrier separation and collection originating from the C-S NWs structure. [Figure not available: see fulltext.

  2. Periodic Substorm Activity in the Geomagnetic Tail.

    DTIC Science & Technology

    1983-02-01

    The electron intensities appear to be iso- tropic , while the ions exhibit a weak anisotropy. The bulk of the plasma may be present below 215 eV and...G. K. Parks, C. S. Lin, H. Reme, J. M. Bosqued , F. Martel, F. Cotin and A. Cros, An experiment to study energetic particle fluxes in and beyond the

  3. Analysis of Temperature Variability Between Davidson Seamount and Sur Ridge: The Tomographic Inverse Problem

    DTIC Science & Technology

    2002-06-01

    processing. Finally, I would like to thank my wife Julia and son Forrest for their patience and support over my two years at NPS. x THIS PAGE...Ramp, F. Chavez , C.S. Chiu, and C.A. Collins, “Development and Maintenance of the ICON Observing System in Monterey Bay.” Proceedings, American

  4. Sequential Compatibility Effects and Cognitive Control: Does Conflict Really Matter?

    ERIC Educational Resources Information Center

    Burle, Boris; Allain, Sonia; Vidal, Franck; Hasbroucq, Thierry

    2005-01-01

    Although it is widely accepted that control mechanisms are necessary for human behavior to be adapted, very little is known about how such mechanisms are recruited. A suggestion to fill the gap was put forward by M. M. Botvinick, T. S. Braver, C. S. Carter, D. M. Barch, and J. D. Cohen (2001), who proposed the conflict-loop theory. This theory has…

  5. Education Matters, October 2008

    ERIC Educational Resources Information Center

    Beckner, Gary, Ed.

    2008-01-01

    Education Matters" is the monthly newsletter of the Association of American Educators (AAE), an organization dedicated to advancing the American teaching profession through personal growth, professional development, teacher advocacy and protection. This issue of the newsletter includes: (1) Fixing D.C.'s Schools: How a 38-Year-Old Rookie…

  6. Linking Sister Chromatid Cohesion to Apoptosis and Aneuploidy in the Development of Breast Cancer

    DTIC Science & Technology

    2005-07-01

    Bunz, S. Loanger, M. R. Speicher, J.-M. 39. Waizenegger, 1. C., S. Ilauf, A. Meinke , and J.-M. Peters. 201)0. Two distinct Peters, K. W. Kinzler, B...Derivation ofhtiman 40. Waizenegger IC, Hasif S, Meinke A, Peters 3Mv. Tsvo distinct pathwvays remoive tumo cels tt itr wihoutwidsprad enaic nstbiliv

  7. Constant size, variable density aerosol particles by ultrasonic spray freeze drying.

    PubMed

    D'Addio, Suzanne M; Chan, John Gar Yan; Kwok, Philip Chi Lip; Prud'homme, Robert K; Chan, Hak-Kim

    2012-05-10

    This work provides a new understanding of critical process parameters involved in the production of inhalation aerosol particles by ultrasonic spray freeze drying to enable precise control over particle size and aerodynamic properties. A series of highly porous mannitol, lysozyme, and bovine serum albumin (BSA) particles were produced, varying only the solute concentration in the liquid feed, c(s), from 1 to 5 wt%. The particle sizes of mannitol, BSA, and lysozyme powders were independent of solute concentration, and depend only on the drop size produced by atomization. Both mannitol and lysozyme formulations showed a linear relationship between the computed Fine Particle Fraction (FPF) and the square root of c(s), which is proportional to the particle density, ρ, given a constant particle size d(g). The FPF decreased with increasing c(s) from 57.0% to 16.6% for mannitol and 44.5% to 17.2% for lysozyme. Due to cohesion, the BSA powder FPF measured by cascade impaction was less than 10% and independent of c(s). Ultrasonic spray freeze drying enables separate control over particle size, d(g), and aerodynamic size, d(a) which has allowed us to make the first experimental demonstration of the widely accepted rule d(a)=d(g)(ρ/ρ(o))(1/2) with particles of constant d(g), but variable density, ρ (ρ(o) is unit density).

  8. Community of Inquiry: Its Past and Present Future

    ERIC Educational Resources Information Center

    Pardales, Michael J.; Girod, Mark

    2006-01-01

    The following paper outlines the historical and philosophical development of, "community of inquiry" in educational discourse. The origins of community of inquiry can be found in the philosophical work of C. S. Peirce. From Peirce the notion of community of inquiry is adopted and developed by educational theorists of different orientations.…

  9. 76 FR 22749 - Camden & Southern Railroad, Inc.-Lease and Operation Exemption-Camden Area Industrial Development...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-22

    .... and Ouachita Railroad, upon C&S becoming a Class III rail carrier. See Ark. Shortline R.R.--Continuance in Control Exemption--Dardanelle & Russellville R.R., Ouachita R.R., & Camden & S. R.R., FD 35484 (STB served Apr. 14, 2011); Ark. Shortline R.R.--Continuance in Control...

  10. Characterizing the Role of 1p36 Deletion in Breast Cancer and Identifying Candidate Tumor Suppressors

    DTIC Science & Technology

    2009-04-01

    Flemming C, Lastowska M, Jackson MS, Hackett C S, Weiss W A, Marshall GM, Kees UR, Norris M D, Haber M . Cell lines from MYCN transgenic murine...Timothy K. Starr, Lara S. Collier, Gary Churchill, Fernando Pardo-Manuel de Villena, Javed Khan, Pui-Yan Kwok, David Largaespada, Allan B almain, a nd W

  11. INSAT-2A and 2B development mechanisms

    NASA Technical Reports Server (NTRS)

    Sathyanarayan, M. N.; Rao, M. Nageswara; Nataraju, B. S.; Viswanatha, N.; Chary, M. Laxmana; Balan, K. S.; Murthy, V. Sridhara; Aller, Raju; Kumar, H. N. Suresha

    1994-01-01

    The Indian National Satellite (INSAT) 2A and 2B have deployment mechanisms for deploying the solar array, two C/S band antenna reflectors and a coilable lattice boom with sail. The mechanisms have worked flawlessly on both satellites. The configuration details, precautions taken during the design phase, the test philosophy, and some of the critical analysis activities are discussed.

  12. Explosive Ditching with TNT

    DTIC Science & Technology

    1977-07-01

    8, Diablo Heights, C. Z. 16. , "Crater Tests in Cucaracha and Culebra Formations," I. C. S. Memorandum 283-P, Apr 19^8, Diablo Heights, C. Z. 17...Study 3 k 5» 6 7" B" 9 10 11 12 13 111 15 Special Engineering Division Istlimian 1 Panama Canal Apr 19hS Cucaracha Canal 2 Zone

  13. 26 CFR 1.1368-1 - Distributions by S corporations.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... without earnings and profits) to the extent that portion is a distribution of money and does not exceed... by the shareholder. (c) S corporation with no earnings and profits. A distribution made by an S corporation that has no accumulated earnings and profits as of the end of the taxable year of the...

  14. 26 CFR 1.1368-1 - Distributions by S corporations.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... without earnings and profits) to the extent that portion is a distribution of money and does not exceed... by the shareholder. (c) S corporation with no earnings and profits. A distribution made by an S corporation that has no accumulated earnings and profits as of the end of the taxable year of the...

  15. MATHEMATICAL ANALYSIS OF PARTICLE TRANSPORT AND DEPOSITION IN HUMAN LUNGS

    EPA Science Inventory

    MATHEMATICAL ANALYSIS OF PARTICLE TRANSPORT AND DEPOSITION IN HUMAN LUNGS. Jung-il Choi*, Center for Environmental Medicine, University of North Carolina, Chapel Hill, NC 27599; C. S. Kim, USEPA National Health and Environmental Effects Research Lab. RTP, NC 27711

    Partic...

  16. Sorption mechanisms of zinc to calcium silicate hydrate: X-ray absorption fine structure (XAFS) investigation.

    PubMed

    Ziegler, F; Scheidegger, A M; Johnson, C A; Dähn, R; Wieland, E

    2001-04-01

    In this study, X-ray absorption fine structure (XAFS) spectroscopy has been used to further elucidate the binding mechanisms of Zn(II) to calcium silicate hydrate (C-S-H), the quantitatively most important cement mineral. Such knowledge is essential for the assessment of the longterm behavior of cement-stabilized waste materials. XAFS spectra of the Zn(II) equilibrated with C-S-H(I) for up to 28 days are best modeled by tetrahedral coordination of Zn(II) by four O atoms in the first atomic shell. Beyond the first coordination shell, data analysis of more highly concentrated samples suggests the presence of two distinct Zn distances and possibly the presence of an Si shell. On the basis of the comparison with a set of reference compounds, this coordination environment can be reasonably related to the structure of hemimorphite, a naturally occurring zinc silicate, and/or the presence of gamma-Zn(OH)2. At the lowest Zn uptake, the above fitting approach failed and data could be described best with a Zn-Si and a Zn-Ca shell. Previous work has been able to show that Zn(II) diffuses into the C-S-H(I) particles and does not form discrete precipitates, so the findings appear to confirm the incorporation of Zn(II) in the interlayer of C-S-H(I).

  17. Interpretation of the Carbon Auger Line Shapes from Adsorbed and Fragmented Ethylene on Ni (100)

    DTIC Science & Technology

    1988-12-01

    560. 32. D.B. Kang and A.B. Anderson, Surf. Sci. 155 (1985) 639. 33. C.S. Wang and J. Callaway, Phys. Rev. 815 (1977) 298. 34. G.G. Kleiman, AppI. Surf... Roald Hoffmann IBM Department of Chemistry Thomas J. Watson Research Center Cornell University P.O. Box 218 Ithaca, New York 14853 Yorktown

  18. IN VIVO AND IN VITRO ANTI-ANDROGENIC EFFECTS OF DE-71, A COMMERCIAL POLYBROMINATED DIPHENYL ETHER MIXTURE, IN THE RAT

    EPA Science Inventory

    In Vivo and In Vitro Anti-androgenic Effects of DE-71, A Commerical Polybrominated Diphenyl Ether (PBDE) Mixture.

    Stoker, T.E., Lambright, C.S. and Gray, L.E.
    Endocrinology Branch, RTD, NHEERL, ORD, U.S. EPA, Research Triangle Park, NC.

    PBDEs are synthesized in...

  19. Marx in Narnia.

    ERIC Educational Resources Information Center

    Wade, Barrie; Sheppard, John

    1989-01-01

    Argues that teachers must understand the different values found in children's literature. Examines four aspects of values present in C. S. Lewis's "Chronicles of Narnia." Asserts that teachers must take responsibility for how such texts are received by young readers in the current multicultural, sexually equal society. (MM)

  20. Weatherization Partnerships Project, Grant No. DE FG 0299EE27594, October 1, 1999 - December 31, 2000. Final Technical Report and FY 1999 version of 'Lessons learned the long way: Integrating utility, energy efficiency tasks with weatherization'

    SciTech Connect

    Power, Meg

    2002-11-01

    Includes reports on (1) the results of focus groups on managing utility residential efficiency [attitudes?] for low-income housing, and (2) low-income household energy consumption and expenditures patterns and weatherization opportunities 1987-1997, intensive analysis of R.E.C.S. data.

  1. The Role of Semaphorin 3B (SEMA3B) in the Pathogenesis of Breast Cancer

    DTIC Science & Technology

    2005-04-01

    Neurosci. 8, 1317-1321. 30. Masood, R., Kundra, A., Zhu, S., Xia, 0., Scalia, P., Smith, D. L. & Gill , P. S. 9. Hall, K. T., Boumnscll, L., Schultze...39. Shirvan, A., Ziv, L., Fleminger, G., Shina, R., He, Z., Brudo, L., Melamed, E. M. K., Tessier- Lavigne , M. & Goodman, C. S. (1998) C~ell 95, 903

  2. Instructional Partnerships to Extend Learning in Urban High Schools: Lessons from New York City and Boston

    ERIC Educational Resources Information Center

    Foley, Eileen M.; Allender, Sara; Cooc, North; Edwards, Sara; Riley, Derek R.; Reisner, Elizabeth R.

    2009-01-01

    Late in 2007 New Visions for Public Schools, a New York City reform organization, received a grant from the C.S. Mott Foundation to organize select high schools and community partners into delivery systems that could improve student achievement. New Visions asked Policy Studies Associates, Inc. to provide research support for this effort in the…

  3. Hydration of a silica fume blended low-alkali shotcrete cement

    NASA Astrophysics Data System (ADS)

    Lothenbach, Barbara; Rentsch, Daniel; Wieland, Erich

    Ettringite and C-S-H are the main hydrates formed during the hydration of the low-alkali cement “ESDRED” consisting of 60% CEM I, 40% microsilica and 4.8% set accelerator. Small quantities of portlandite and hemicarbonate present as intermediate phases destabilise within a few weeks. The use of a set accelerator leads to massive ettringite precipitation, a moderate decalcification of C-S-H and reduction of pH due to presence of dissolved formate. The slow reaction of the silica fume during hydration decalcifies the C-S-H and decreases the alkali concentration to 30 mM and the pH value of the pore solution to 11.5 after 1 year and longer. The further reaction of the silica fume is expected to be slow and to result in a decrease of pH to 11. Further, the destabilisation of ettringite to thaumasite is expected. The long-term stability of C-S-H and the pH of approximately 11 make ESDRED a good candidate for usage in contact with the clay-based barriers of a repository for radioactive waste.

  4. A predictive model for the release of slightly water-soluble drugs from HPMC matrices.

    PubMed

    Fu, X C; Wang, G P; Wang, Y H; Liang, W Q

    2004-08-01

    A model to predict the fraction of slightly water-soluble drug released as a function of release time (t, h), HPMC concentration (C(H), w/w), drug solubility in distilled water at 37 degrees C (C(s), g/100 mL), and volume of drug molecule (V, nm3) was derived when theophyline, tinidazole, and propylthiouracil were selected as model drugs. The model is log (M(t)/M(infinity)) = 0.8683 logt-0.1930C(s) logt + 0.5406V logt-1.227C(H) + 0.1594C(s) + 0.4423C(H)C(s) - 0.8655 (n = 130, r = 0.9969), where Mt is the amount of drug released at time t, Minfinity is the amount of drug released over a very long time, which corresponds in principle to the initial loading, n is the number of samples, and r is the correlation coefficient. The model was validated using sulfamethoxazole and satisfactory results were obtained. The model can be used to predict the release fraction of variousslightly water-soluble drugs from HPMC matrices having different polymer levels.

  5. Prediction of drug release from HPMC matrices: effect of physicochemical properties of drug and polymer concentration.

    PubMed

    Fu, X C; Wang, G P; Liang, W Q; Chow, M S S

    2004-03-05

    A working equation to predict drug release from hydroxypropyl methylcellulose (HPMC) matrices was derived using a training set of HPMC matrices having different HPMC concentration (w/w, 16.5-55%) and different drugs (solubilities of 1.126-125.5 g/100 ml in water and molecular volumes of 0.1569-0.4996 nm(3)). The equation was log(M(t)/M( infinity ))=-0.6747+1.027 log t -0.1759 (log C(s)) log t +0.4027 (log V) log t -1.041C(H) +0.3213 (log C(s)) C(H) -0.4101 (log V) C(H) -0.3521 (log V) log C(s) (n=263, r=0.9831), where M(t) is the amount of drug released at time t, M( infinity ) the amount of drug released over a very long time, which corresponds in principle to the initial loading, t the release time (h), C(s) the drug solubility in water (g/100 ml), V the volume of drug molecule (nm(3)), and C(H) is HPMC concentration (w/w). The benefit of the novel model is to predict M(t)/M( infinity ) values of a drug from formulation and its physicochemical properties, so applicable to the HPMC matrices of different polymer levels and different drugs including soluble drugs and slightly soluble drugs.

  6. Confined Water in Layered Silicates: The Origin of Anomalous Thermal Expansion Behavior in Calcium-Silicate-Hydrates.

    PubMed

    Krishnan, N M Anoop; Wang, Bu; Falzone, Gabriel; Le Pape, Yann; Neithalath, Narayanan; Pilon, Laurent; Bauchy, Mathieu; Sant, Gaurav

    2016-12-28

    Water, under conditions of nanoscale confinement, exhibits anomalous dynamics, and enhanced thermal deformations, which may be further enhanced when such water is in contact with hydrophilic surfaces. Such heightened thermal deformations of water could control the volume stability of hydrated materials containing nanoconfined structural water. Understanding and predicting the thermal deformation coefficient (TDC, often referred to as the CTE, coefficient of thermal expansion), which represents volume changes induced in materials under conditions of changing temperature, is of critical importance for hydrated solids including: hydrogels, biological tissues, and calcium silicate hydrates, as changes in their volume can result in stress development, and cracking. By pioneering atomistic simulations, we examine the physical origin of thermal expansion in calcium-silicate-hydrates (C-S-H), the binding agent in concrete that is formed by the reaction of cement with water. We report that the TDC of C-S-H shows a sudden increase when the CaO/SiO2 (molar ratio; abbreviated as Ca/Si) exceeds 1.5. This anomalous behavior arises from a notable increase in the confinement of water contained in the C-S-H's nanostructure. We identify that confinement is dictated by the topology of the C-S-H's atomic network. Taken together, the results suggest that thermal deformations of hydrated silicates can be altered by inducing compositional changes, which in turn alter the atomic topology and the resultant volume stability of the solids.

  7. Off the Menu: Gulf Islands' Leadership "Special"

    ERIC Educational Resources Information Center

    Magnusson, Debbie; Hopkins, Jeff

    2011-01-01

    From August 2009 to January 2010, fourteen educational leaders in B.C.'s School district #64 chose to participate in an individualized educational leadership coaching initiative. These participants were coached to develop and focus on specific goals and objectives of their own choosing, often related to school goals or, in some cases, personal…

  8. Poor Schools or Poor Kids?

    ERIC Educational Resources Information Center

    Williams, Joe; Noguera, Pedro

    2010-01-01

    Since the run-up to the 2008 election, the Democratic Party has been home to two prominent and very different reform wings. One, spearheaded by the group Democrats for Education Reform and notable school-district chiefs like New York's Joel Klein and Washington, D.C.'s Michelle Rhee, is the Education Equality Project (EEP). The other, A Broader,…

  9. The US Support Program to IAEA Safeguards Priority of Containment and Surveillance

    SciTech Connect

    Diaz,R.A.

    2008-06-13

    The United States Support Program (USSP) priority for containment and surveillance (US) focuses on maintaining or improving the reliability and cost-effectiveness of C/S systems for IAEA safeguards, expanding the number of systems that are unattended and remotely monitored, and developing verification methods that help streamline the on-site inspection process. Existing IAEA C/S systems have evolved to become complex, integrated systems, which may include active seals, nondestructive assay (NDA) instruments, video cameras, and other sensors. These systems operate autonomously. They send analytical data to IAEA headquarters where it can be reviewed. These systems present challenges to the goals of improved system performance, standardization, reliability, maintainability, documentation, and cost effectiveness. One critical lesson from past experiences is the need for cooperation and common objectives among the IAEA, the developer, and the facility operator, to create a successful, cost effective system. Recent USSP C/S activities include Rokkasho Reprocessing Plant safeguard systems, production of a new shift register, numerous vulnerability assessments of C/S systems, a conduit monitoring system which identifies tampering of IAEA conduit deployed in the field, fiber optic seal upgrades, unattended monitoring system software upgrades, next generation surveillance system which will upgrade existing camera systems, and support of the IAEA's development of the universal nondestructive assay data acquisition platform.

  10. Foreign Policy & Morality: Framework for a Moral Audit.

    ERIC Educational Resources Information Center

    Hesburgh, Theodore M.; Halle, Louis J.

    Two papers and several commentaries discuss a viable moral framework for foreign policy. It is hoped that the thought of some of the world's major thinkers can provide at least the foundations for a more enduring approach to the issues of political morality. The two main papers are by Father Theodore M. Hesburgh, C.S.C., president of the…

  11. A pilot study to investigate the induction and manipulation of learned helplessness in healthy adults.

    PubMed

    Taylor, Joseph J; Neitzke, Daniel J; Khouri, George; Borckardt, Jeffrey J; Acierno, Ron; Tuerk, Peter W; Schmidt, Matthew; George, Mark S

    2014-11-30

    Eliminating the controllability of a noxious stimulus may induce a learned helplessness (LH) that resembles aspects of depression and post-traumatic stress disorder (PTSD). This study examined whether repetitive transcranial magnetic stimulation (rTMS) of the left dorsolateral prefrontal cortex (DLPFC) promotes resilience in an aversive stimulus model of LH. All 55 participants were told that an undisclosed sequence of button presses would terminate an aversive stimulus on their forearm. In truth, only half had control (+C). The other half had no control (-C). All participants received real (R) or sham (S) left DLPFC rTMS during the paradigm (+C/R, -C/S,+C/S,-C/R). We evaluated the cognitive effects of LH using an anagram task. The LH paradigm successfully reduced perceived control in the -C groups. As predicted, the +C/R and +C/S groups tended to give up less quickly and take less time to solve each anagram than did the -C/S group. Superior anagram performance in the -C/R group approached statistical significance. Our preliminary results suggest that manipulating the controllability of an aversive stimulus may induce an LH effect that manifests as impaired anagram performance. Further research is needed to refine this model and determine if DLPFC rTMS mitigates any LH effects.

  12. 77 FR 68058 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-15

    ... Corporation Helicopters AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for... Aircraft Corporation (Sikorsky) Model S-70, S-70A, S-70C, S-70C(M), and S-70C(M1) helicopters with a... service information identified in this AD, contact Sikorsky Aircraft Corporation, Attn:...

  13. United States Catholic Elementary and Secondary Schools, 1986-1987. A Statistical Report on Schools, Enrollment, & Staffing.

    ERIC Educational Resources Information Center

    Bredeweg, Frank H.

    This publication contains the core school, enrollment, and staffing data of the National Catholic Educational Association's historical file. A page of statistical highlights of the current status of Catholic schools is followed by (1) an introductory essay by Frank H. Bredeweg, C.S.B., which briefly describes the growth of American Catholic…

  14. Identification of the Transformational Properties and Transcriptional Targets of the Oncogenic SRY Transcription Factor SOX4

    DTIC Science & Technology

    2008-01-01

    Scharer, C.D. McCabe, M. Ali-Seyed, M.F. Berger, M.L. Bulyk, and C.S. Moreno. Genome-wide Location Analysis of the SOX4 Transcriptional Network in...analysis showing the biological function of SOX4 target genes. (B) Ingenuity Pathway Assist analysis showing SOX4�s transcriptional network . Christopher

  15. European Science Notes Information Bulletin. Reports on Current European and Middle Eastern Science

    DTIC Science & Technology

    1993-01-01

    Institute de Physique et Chimie des Materiaux de Fax: 33 56 84 66 46 Strasbourg, E.H.I.C.S. I rue Blaise Pascal 67008, STRASBOURG Cedex Groupe de...Matiere Condensee Pascal 75775 Paris, France (1990). - J. Livage 3. "Sol-Gel Science in France," 1991 (unpub- Universite Pierre et Marie Curie 4, place

  16. Factors influencing exit of substances from cerebrospinal fluid into deep cervical lymph of the rabbit.

    PubMed Central

    Bradbury, M W; Westrop, R J

    1983-01-01

    Experiments have been made to determine the main route by which radio-iodinated albumin reaches deep cervical lymph from cerebrospinal fluid (c.s.f.) in the anaesthetized rabbit. Other factors, influencing drainage through this pathway, have been investigated. After single injection of [125I]albumin into a lateral ventricle of control rabbits, a mean of 14.8% of the radioactivity lost from brain-c.s.f. was recovered during 6 hr in the lymph of the cannulated jugular trunk of one side. Injection of kaolin into the olfactory fossa or sealing of the cribriform plate with cyanoacrylate glue reduced the recovery of [125I]albumin to 3.3% and 1.9% respectively at 2-3 weeks after the procedure designed to block the cribriform plate. This confirms the traditional view that the major connexions between c.s.f. and deep cervical lymph is via prolongations of subarachnoid space around the olfactory nerves, leading into the interstitial spaces of the nasal submucosa. The dense lymphatic plexus in this tissue is known to drain into the retropharyngeal (deep cervical) lymph nodes. Constant infusion of artificial c.s.f. into a lateral ventricle at 10 microliters/min or 30 microliters/min, in order to approximately double or quadruple flow through the system respectively, decreased the recovery of intraventricular [125I]albumin to 8.1% and 6.9% respectively. It also appeared that the increased c.s.f. pressures induced forced relatively more radioactivity from inside the skull into the c.s.f. spaces of the spinal cord. Maintaining the rabbit prone but at 20 degrees from the horizontal caused recoveries of [125I]albumin in lymph of 17.6% (head-up position and 6.6% (head-down). The amounts of radioactivity in nose and spinal cord markedly increased and decreased respectively in the head-down position. They changed in the opposite directions in the head-up position. The amounts of [51Cr]EDTA, [125I]metrizamide and [14C]inulin in deep cervical lymph were negligible after intraventricular

  17. Characterization of morphology and hydration products of high-volume fly ash paste by monochromatic scanning x-ray micro-diffraction (μ-SXRD)

    SciTech Connect

    Bae, Sungchul; Meral, Cagla; Oh, Jae-eun; Moon, Juhyuk; Kunz, Martin; Monteiro, Paulo J.M.

    2014-05-01

    The present study focuses on identification and micro-structural characterization of the hydration products formed in high-volume fly ash (HVFA)/portland cement (PC) systems using monochromatic scanning x-ray micro-diffraction (μ-SXRD) and SEM-EDS. Pastes with up to 80% fly ash replacement were studied. Phase maps for HVFA samples using μ-SXRD patterns prove that μ-SXRD is an effective method to identify and visualize the distribution of phases in the matrix. μ-SXRD and SEM-EDS analysis shows that the C-S-H formed in HVFA system containing 50% or more of fly ash has a similar structure as C-S-H(I) with comparatively lower Ca/Si ratio than the one produced in PC system. Moreover, coexistence of C-S-H(I) and strätlingite is observed in the system containing 80% of fly ash, confirming that the amount of alumina and silicate phases provided by the fly ash is a major factor for the formation of C-S-H(I) and strätlingite in HVFA system. - Highlights: • High-volume fly ash (HVFA) paste was studied by scanning x-ray micro-diffraction. • Coexistence of C-S-H(I) and strätlingite in the HVFA system is clearly shown. • The distribution of minor phases in the HVFA system is shown. • Differences between inner and outer products of fly ash are observed by SEM-EDS.

  18. Activation of CS2 and CS by ML3 complexes.

    PubMed

    Ariafard, Alireza; Brookes, Nigel J; Stranger, Robert; Yates, Brian F

    2008-09-10

    The aim of this study was to determine the best neutral ML3 metal complexes for activating and cleaving the multiple bonds in CS2 and CS. Current experimental results show that, so far, only one bond in CS2 can be cleaved, and that CS can be activated but the bond is not broken. In the work described in this paper, density functional theory calculations have been used to evaluate the effectiveness of different ML3 complexes to activate the C-S bonds in CS2 and CS, with M = Mo, Re, W, and Ta and L = NH2. These calculations show that the combination of Re and Ta in the L3Re/CS2/TaL3 complex would be the most promising system for the cleavage of both C-S bonds of CS2. The reaction to cleave both C-S bonds is predicted to be exothermic by about 700 kJ mol(-1) and to proceed in an almost barrierless fashion. In addition, we are able to rationalize why the breaking of the C-S bond in CS has not been observed experimentally with M = Mo: this reaction is strongly endothermic. There is a subtle interplay between charge transfer and pi back-donation, and it appears that the Mo-C and Mo-S bonds are not strong enough to compensate for the breaking of the C-S bond. Our results suggest that, instead, CS could be cleaved with ReL3 or, even better, with a combination of ReL3 and TaL3. Molecular orbitals and Mulliken charges have been used to help explain these trends and to make predictions about the most promising systems for future experimental exploration.

  19. Aberrant Assembly of RNA Recognition Motif 1 Links to Pathogenic Conversion of TAR DNA-binding Protein of 43 kDa (TDP-43)*

    PubMed Central

    Shodai, Akemi; Morimura, Toshifumi; Ido, Akemi; Uchida, Tsukasa; Ayaki, Takashi; Takahashi, Rina; Kitazawa, Soichiro; Suzuki, Sakura; Shirouzu, Mikako; Kigawa, Takanori; Muto, Yutaka; Yokoyama, Shigeyuki; Takahashi, Ryosuke; Kitahara, Ryo; Ito, Hidefumi; Fujiwara, Noriko; Urushitani, Makoto

    2013-01-01

    Aggregation of TAR DNA-binding protein of 43 kDa (TDP-43) is a pathological signature of amyotrophic lateral sclerosis (ALS). Although accumulating evidence suggests the involvement of RNA recognition motifs (RRMs) in TDP-43 proteinopathy, it remains unclear how native TDP-43 is converted to pathogenic forms. To elucidate the role of homeostasis of RRM1 structure in ALS pathogenesis, conformations of RRM1 under high pressure were monitored by NMR. We first found that RRM1 was prone to aggregation and had three regions showing stable chemical shifts during misfolding. Moreover, mass spectrometric analysis of aggregated RRM1 revealed that one of the regions was located on protease-resistant β-strands containing two cysteines (Cys-173 and Cys-175), indicating that this region served as a core assembly interface in RRM1 aggregation. Although a fraction of RRM1 aggregates comprised disulfide-bonded oligomers, the substitution of cysteine(s) to serine(s) (C/S) resulted in unexpected acceleration of amyloid fibrils of RRM1 and disulfide-independent aggregate formation of full-length TDP-43. Notably, TDP-43 aggregates with RRM1-C/S required the C terminus, and replicated cytopathologies of ALS, including mislocalization, impaired RNA splicing, ubiquitination, phosphorylation, and motor neuron toxicity. Furthermore, RRM1-C/S accentuated inclusions of familial ALS-linked TDP-43 mutants in the C terminus. The relevance of RRM1-C/S-induced TDP-43 aggregates in ALS pathogenesis was verified by immunolabeling of inclusions of ALS patients and cultured cells overexpressing the RRM1-C/S TDP-43 with antibody targeting misfolding-relevant regions. Our results indicate that cysteines in RRM1 crucially govern the conformation of TDP-43, and aberrant self-assembly of RRM1 at amyloidogenic regions contributes to pathogenic conversion of TDP-43 in ALS. PMID:23558684

  20. Size-distribution analysis of proteins by analytical ultracentrifugation: strategies and application to model systems.

    PubMed Central

    Schuck, Peter; Perugini, Matthew A; Gonzales, Noreen R; Howlett, Geoffrey J; Schubert, Dieter

    2002-01-01

    Strategies for the deconvolution of diffusion in the determination of size-distributions from sedimentation velocity experiments were examined and developed. On the basis of four different model systems, we studied the differential apparent sedimentation coefficient distributions by the time-derivative method, g(s*), and by least-squares direct boundary modeling, ls-g*(s), the integral sedimentation coefficient distribution by the van Holde-Weischet method, G(s), and the previously introduced differential distribution of Lamm equation solutions, c(s). It is shown that the least-squares approach ls-g*(s) can be extrapolated to infinite time by considering area divisions analogous to boundary divisions in the van Holde-Weischet method, thus allowing the transformation of interference optical data into an integral sedimentation coefficient distribution G(s). However, despite the model-free approach of G(s), for the systems considered, the direct boundary modeling with a distribution of Lamm equation solutions c(s) exhibited the highest resolution and sensitivity. The c(s) approach requires an estimate for the size-dependent diffusion coefficients D(s), which is usually incorporated in the form of a weight-average frictional ratio of all species, or in the form of prior knowledge of the molar mass of the main species. We studied the influence of the weight-average frictional ratio on the quality of the fit, and found that it is well-determined by the data. As a direct boundary model, the calculated c(s) distribution can be combined with a nonlinear regression to optimize distribution parameters, such as the exact meniscus position, and the weight-average frictional ratio. Although c(s) is computationally the most complex, it has the potential for the highest resolution and sensitivity of the methods described. PMID:11806949

  1. Adsorption of chloridazon from aqueous solution on heat and acid treated sepiolites.

    PubMed

    González-Pradas, E; Socías-Viciana, M; Ureña-Amate, M D; Cantos-Molina, A; Villafranca-Sánchez, M

    2005-05-01

    The adsorption of chloridazon on heat treated sepiolite samples at 110 degrees C (S-110), 200 degrees C (S-200), 400 degrees C (S-400), 600 degrees C (S-600) and acid treated samples with H2SO4 solutions of two different concentrations (0.25 and 1.0M) (S-0.25 and S-1.0, respectively) from pure water at 25 degrees C has been studied by using batch experiments. In addition, column experiments were carried out with the natural (S-110) and 600 degrees C (S-600) heat treated samples, using a 10.30 mg l-1 aqueous solution of chloridazon. The adsorption experimental data points have been fitted to the Freundlich equation in order to calculate the adsorption capacities (Kf) of the samples; Kf values range from 2.89 mg kg-1 for the S-1.0 sample up to 164 mg kg-1 for the S-600 sample; so, the heat treatment given to the sepiolite greatly increases its adsorption capacity for the herbicide chloridazon whereas the acid treatment produces a clear decrease in the amount of chloridazon adsorbed. The removal efficiency (R) has also been calculated; R values ranging from 5.08% for S-1.0 up to 60.9% for S-600. The batch experiments showed that the strongest heat treatment is more effective than the natural and acid treated sepiolite in relation to adsorption of chloridazon. The column experiments also showed that 600 degrees C heat treated sepiolite might be reasonably used in removing chloridazon from water. Thus, as this type of clay is relatively plentiful, these activated samples might be reasonably used in order to remove chloridazon from water.

  2. Flexible transparent displays based on core/shell upconversion nanophosphor-incorporated polymer waveguides.

    PubMed

    Park, Bong Je; Hong, A-Ra; Park, Suntak; Kyung, Ki-Uk; Lee, Kwangyeol; Seong Jang, Ho

    2017-04-03

    Core/shell (C/S)-structured upconversion nanophosphor (UCNP)-incorporated polymer waveguide-based flexible transparent displays are demonstrated. Bright green- and blue-emitting Li(Gd,Y)F4:Yb,Er and Li(Gd,Y)F4:Yb,Tm UCNPs are synthesized via solution chemical route. Their upconversion luminescence (UCL) intensities are enhanced by the formation of C/S structure with LiYF4 shell. The Li(Gd,Y)F4:Yb,Er/LiYF4 and Li(Gd,Y)F4:Yb,Tm/LiYF4 C/S UCNPs exhibit 3.3 and 2.0 times higher UCL intensities than core counterparts, respectively. In addition, NaGdF4:Yb,Tm/NaGdF4:Eu C/S UCNPs are synthesized and they show red emission via energy transfer and migration of Yb(3+) → Tm(3+) → Gd(3+) → Eu(3+). The C/S UCNPs are incorporated into bisphenol A ethoxylate diacrylate which is used as a core material of polymer waveguides. The fabricated stripe-type polymer waveguides are highly flexible and transparent (transmittance > 90% in spectral range of 443-900 nm). The polymer waveguides exhibit bright blue, green, and red luminescence, depending on the incorporated UCNPs into the polymer core, under coupling with a near infrared (NIR) laser. Moreover, patterned polymer waveguide-based display devices are fabricated by reactive ion etching process and they realize bright blue-, green-, and red-colored characters under coupling with an NIR laser.

  3. Balancing strength and toughness of calcium-silicate-hydrate via random nanovoids and particle inclusions: Atomistic modeling and statistical analysis

    NASA Astrophysics Data System (ADS)

    Zhang, Ning; Shahsavari, Rouzbeh

    2016-11-01

    As the most widely used manufactured material on Earth, concrete poses serious societal and environmental concerns which call for innovative strategies to develop greener concrete with improved strength and toughness, properties that are exclusive in man-made materials. Herein, we focus on calcium silicate hydrate (C-S-H), the major binding phase of all Portland cement concretes, and study how engineering its nanovoids and portlandite particle inclusions can impart a balance of strength, toughness and stiffness. By performing an extensive +600 molecular dynamics simulations coupled with statistical analysis tools, our results provide new evidence of ductile fracture mechanisms in C-S-H - reminiscent of crystalline alloys and ductile metals - decoding the interplay between the crack growth, nanovoid/particle inclusions, and stoichiometry, which dictates the crystalline versus amorphous nature of the underlying matrix. We found that introduction of voids and portlandite particles can significantly increase toughness and ductility, specially in C-S-H with more amorphous matrices, mainly owing to competing mechanisms of crack deflection, voids coalescence, internal necking, accommodation, and geometry alteration of individual voids/particles, which together regulate toughness versus strength. Furthermore, utilizing a comprehensive global sensitivity analysis on random configuration-property relations, we show that the mean diameter of voids/particles is the most critical statistical parameter influencing the mechanical properties of C-S-H, irrespective of stoichiometry or crystalline or amorphous nature of the matrix. This study provides new fundamental insights, design guidelines, and de novo strategies to turn the brittle C-S-H into a ductile material, impacting modern engineering of strong and tough concrete infrastructures and potentially other complex brittle materials.

  4. Nanostructural Characteristics and Interfacial Properties of Polymer Fibers in Cement Matrix.

    PubMed

    Shalchy, Faezeh; Rahbar, Nima

    2015-08-12

    Concrete is the most used material in the world. It is also one of the most versatile yet complex materials that humans have used for construction. However, an important weakness of concrete (cement-based composites) is its low tensile properties. Therefore, over the past 30 years many studies were focused on improving its tensile properties using a variety of physical and chemical methods. One of the most successful attempts is to use polymer fibers in the structure of concrete to obtain a composite with high tensile strength and ductility. The advantages of polymer fiber as reinforcing material in concrete, both with regard to reducing environmental pollution and the positive effects on a country's economy, are beyond dispute. However, a thorough understanding of the mechanical behavior of fiber-reinforced concrete requires a knowledge of fiber/matrix interfaces at the nanoscale. In this study, a combination of atomistic simulations and experimental techniques has been used to study the nanostructure of fiber/matrix interfaces. A new model for calcium-silicate-hydrate (C-S-H)/fiber interfaces is also proposed on the basis of scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) analyses. Finally, the adhesion energy between the C-S-H gel and three different polymeric fibers (poly(vinyl alcohol), nylon-6, and polypropylene) were numerically studied at the atomistic level because adhesion plays a key role in the design of ductile fiber-reinforced composites. The mechanisms of adhesion as a function of the nanostructure of fiber/matrix interfaces are further studied and discussed. It is observed that the functional group in the structure of polymer macromolecule affects the adhesion energy primarily by changing the C/S ratio of the C-S-H at the interface and by absorbing additional positive ions in the C-S-H structure.

  5. Flexible transparent displays based on core/shell upconversion nanophosphor-incorporated polymer waveguides

    PubMed Central

    Park, Bong Je; Hong, A-Ra; Park, Suntak; Kyung, Ki-Uk; Lee, Kwangyeol; Seong Jang, Ho

    2017-01-01

    Core/shell (C/S)-structured upconversion nanophosphor (UCNP)-incorporated polymer waveguide-based flexible transparent displays are demonstrated. Bright green- and blue-emitting Li(Gd,Y)F4:Yb,Er and Li(Gd,Y)F4:Yb,Tm UCNPs are synthesized via solution chemical route. Their upconversion luminescence (UCL) intensities are enhanced by the formation of C/S structure with LiYF4 shell. The Li(Gd,Y)F4:Yb,Er/LiYF4 and Li(Gd,Y)F4:Yb,Tm/LiYF4 C/S UCNPs exhibit 3.3 and 2.0 times higher UCL intensities than core counterparts, respectively. In addition, NaGdF4:Yb,Tm/NaGdF4:Eu C/S UCNPs are synthesized and they show red emission via energy transfer and migration of Yb3+ → Tm3+ → Gd3+ → Eu3+. The C/S UCNPs are incorporated into bisphenol A ethoxylate diacrylate which is used as a core material of polymer waveguides. The fabricated stripe-type polymer waveguides are highly flexible and transparent (transmittance > 90% in spectral range of 443–900 nm). The polymer waveguides exhibit bright blue, green, and red luminescence, depending on the incorporated UCNPs into the polymer core, under coupling with a near infrared (NIR) laser. Moreover, patterned polymer waveguide-based display devices are fabricated by reactive ion etching process and they realize bright blue-, green-, and red-colored characters under coupling with an NIR laser. PMID:28368021

  6. Development of an analytical technique for the detection of alteration minerals formed in bentonite by reaction with alkaline solutions

    NASA Astrophysics Data System (ADS)

    Sakamoto, H.; Shibata, M.; Owada, H.; Kaneko, M.; Kuno, Y.; Asano, H.

    A multibarrier system consisting of cement-based backfill, structures and support materials, and a bentonite-based buffer material has been studied for the TRU waste disposal concept being developed in Japan, the aim being to restrict the migration of radionuclides. Concern regarding bentonite-based materials in this disposal environment relates to long-term alteration under hyper-alkaline conditions due to the presence of cementitious materials. In tests simulating the interaction between bentonite and cement, formation of secondary minerals due to alteration reactions under the conditions expected for geological disposal of TRU waste (equilibrated water with cement at low liquid/solid ratio) has not been observed, although alteration was observed under extremely hyper-alkaline conditions with high temperatures. This was considered to be due to the fact that analysis of C-S-H gel formed at the interface as a secondary mineral was difficult using XRD, because of its low crystallinity and low content. This paper describes an analytical technique for the characterization of C-S-H gel using a heavy liquid separation method which separates C-S-H gel from Kunigel V1 bentonite (bentonite produced in Japan) based on the difference in specific gravity between the crystalline minerals constituting Kunigel V1 and the secondary C-S-H gel. For development of C-S-H gel separation methods, simulated alteration samples were prepared by mixing 990 mg of unaltered Kunigel V1 and 10 mg of C-S-H gel synthesized using pure chemicals at a ratio of Ca/Si = 1.2. The simulated alteration samples were dispersed in bromoform-methanol mixtures with specific gravities ranging from 2.00 to 2.57 g/cm 3 and subjected to centrifuge separation to recover the light density fraction. Subsequent XRD analysis to identify the minerals was complemented by dissolution in 0.6 N hydrochloric acid to measure the Ca and Si contents. The primary peak (2 θ = 29.4°, Cu Kα) and secondary peaks (2 θ = 32.1

  7. Characterization of internal wetting in polymer electrolyte membrane gas diffusion layers

    NASA Astrophysics Data System (ADS)

    Cheung, Perry; Fairweather, Joseph D.; Schwartz, Daniel T.

    Capillary pressure vs. saturation (P C(S L)) curves are fundamental to understanding liquid water transport and flooding in PEM gas diffusion layers (GDLs). P C(S L) curves convolute the influence of GDL pore geometry and internal contact angles at the three-phase liquid/solid/gas boundary. Even simple GDL materials are a spatially non-uniform mixture of carbon fiber and binder, making a Gaussian distribution of contact angles likely, based on the Cassie-Baxter equation. For a given Gaussian contact angle distribution with mean (θ Mean) and standard deviation (σ), a realistic P C(S L) curve can be computed using a bundle of capillaries model and GDL pore size distribution data. As expected, computed P C(S L) curves show that θ Mean sets the overall hydrophilic (θ Mean < 90°) or hydrophobic (θ Mean > 90°) character of the GDL (i.e., liquid saturation level at a given capillary pressure), and σ affects the slope of the P C(S L) curve. The capillary bundle model also can be used with (θ Mean, σ) as unknown parameters that are best-fit to experimentally acquired P C(S L) and pore size distribution data to find (θ Mean, σ) values for actual GDL materials. To test this, pore size distribution data was acquired for Toray TGP-H-090 along with hysteretic liquid and gas intrusion capillary pressure curve data. High quality best-fits were found between the model and combined datasets, with GDL liquid intrusion showing fairly neutral internal surface wetting properties (θ Mean = 92° and σ = 10°) whereas gas intrusion displayed a hydrophilic character (θ Mean = 52° and σ = 8°). External liquid advancing and receding contact angles were also measured on this same material and they also showed major hysteresis. The new methods described here open the door for better understanding of the link between GDL material processing and the wetting properties that affect flooding.

  8. A Study of Tropical Cyclones over India (Bay of Bengal and Arabian Sea) and Solar Influence on It

    NASA Astrophysics Data System (ADS)

    Banerjee, Dhruba

    2016-07-01

    A prominent example of extreme weather event in India is Cyclonic Storm. In this paper annual variation of tropical Cyclonic Storm (CS), Severe Cyclonic Storm (SCS), Very Severe Cyclonic Storm (VSCS) and Super Cyclonic Storm (SuCS) over Bay Of Bengal (BOB) and Arabian Sea (ARS) during last 20 years (1990-2009) have been analyzed .The analysis revels that the total number of cyclone (TNC) has increased with high rate(gradient being +1.67 per year) and although C.S. is more over BOB than that over ARS.The rate of increase of C.S. over Arabian Sea is more than that over Bay of Bengal. Furthermore, two interesting features have been noted: (i) Monsoon tends to prohibit the formation of C.S (ii) Cyclonic Storm(C.S.) increases with the increase of Global Sea Surface Temperature (GSST) during said period.. Attempt has also been made to find out the influence of solar activity on these extreme weather events. Keeping in mind that the Sun Spot Number (SSN) is an indicator of the strength of solar effects, it has been found that in most of the times the high value of SSN is associated with small number of total cyclone (C.S.). Specifically, when only the years of high Sun's Spot Number (approximately greater than 90) are taken into consideration then Correlation Coefficient (C.C.) between SSN and number of cyclones comes out to be quite high (-0.78) significance at 99.99% level while Correlation Coefficient (C.C.) of cyclones with time is 0.53 and with SSN < 60 it is..095 . Thus it appears that although C.S. frequency is increasing with time, Sun's Spot's influence is such that it basically opposes the formation of cyclone provided SSN exceeds certain critical value (roughly 90). In principle, this is very important for any such event, and it is consistent with the trend of different phenomena occurring in nature. Key words: India, cyclone, solar influence, Critical Sun's Spot Number

  9. Substitution of Azotobacter vinelandii hydrogenase small-subunit cysteines by serines can create insensitivity to inhibition by O2 and preferentially damages H2 oxidation over H2 evolution.

    PubMed Central

    McTavish, H; Sayavedra-Soto, L A; Arp, D J

    1995-01-01

    Mutants in which conserved cysteines 294, 297 or 64 and 65 of the Azotobacter vinelandii hydrogenase small subunit were replaced by serines were studied. Cysteines 294 and 297 are homologous to cysteines 246 and 249 of the Desulfovibrio gigas hydrogenase, and these cysteines are ligands to the [3Fe-4S] clusters (A. Volbeda, M.-H. Charon, C. Piras, E. C. Hatchikian, M. Frey, and J. C. Fontecilla-Camps, Nature (London) 373:580-587, 1995). Cysteine 65 is homologous to cysteine 20 of the D. gigas hydrogenase, and this cysteine is a ligand to the proximal [4Fe-4S] cluster. All three mutants retained some hydrogenase activity. All three mutants studied had H2 oxidation-to-H2 evolution activity ratios with whole cells of approximately 1.5, compared with 46 for the wild type. The changes preferentially deplete H2 oxidation activity, while having less effect on evolution. The K64,65C-->S hydrogenase was partially purified and had a specific activity for the evolution reaction that was 22% that of the wild type, while the oxidation-specific activity was 2% that of the wild type. Because cysteine 65 provides a ligand to the proximal [4Fe-4S] cluster, this cluster can be altered without entirely eliminating enzyme activity. Likewise, the detection of H2 evolution and H2 oxidation activities with whole cells and membranes of the K294C-->S and K297C-->S mutants indicates that the [3Fe-4S] cluster can also be altered or possibly eliminated without entirely eliminating enzyme activity. Membranes with K294C-->S or K297C-->S hydrogenase were uninhibited by O2 in H2 oxidation and uninhibited by H2 in H2 evolution. Wild-type membranes and membranes with K64,65C-->S hydrogenase were both sensitive to these inhibitors. These data indicate that the [3Fe-4S] cluster controls the reversible inhibition of hydrogenase activity by O2 or H2. PMID:7608067

  10. [CORBA-based design and packaging of picture archiving and communication system object].

    PubMed

    Zhang, Zu-jin; Sun, An-yu

    2009-10-01

    Regionalization has become one of the most important trends in the development of picture archiving and communication systems (PACS) due to the existence of large amounts of information islands. The conventional PACS designed according to the DICOM standard on the basis of the C/S structure fails to meet the demand of regional information system maintenance. A regional PACS system based on common object request broker architecture (CORBA) distributed technology is therefore proposed and implemented. This article describes the design and packaging of the PACS objects. When mounting a series of separate logical and related functional PACS objects on the ORB bus, the multi-scale PACS systems can be established. This method eliminates the limitation of the C/S structure and offers good compatibility and scalability.

  11. Buffer layers on metal alloy substrates for superconducting tapes

    DOEpatents

    Jia, Quanxi; Foltyn, Stephen R.; Arendt, Paul N.; Groves, James R.

    2004-10-05

    An article including a substrate, at least one intermediate layer upon the surface of the substrate, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the at least one intermediate layer, and a layer of a SrRuO.sub.3 buffer material upon the oriented cubic oxide material layer is provided together with additional layers such as a HTS top-layer of YBCO directly upon the layer of a SrRuO.sub.3 buffer material layer. With a HTS top-layer of YBCO upon at least one layer of the SrRuO.sub.3 buffer material in such an article, J.sub.c 's of up to 1.3.times.10.sup.6 A/cm.sup.2 have been demonstrated with projected I.sub.c 's of over 200 Amperes across a sample 1 cm wide.

  12. Stress Analysis of Outer Wing Bulkheads and Auxiliary Spar - Model YB-36 and B-36A

    DTIC Science & Technology

    1947-04-01

    IVr) 500’ _ #.11 LAA (I I-)f lJ HA A (.5000) FW 444 G-46 UTILITY REPOIRT SHEEF • ’ Ii ANALYS3IS.. WI N4 Consli~datigd Vulten Aircraft Iorporati an...REPORT SHEEF ANALYSIS V I PCE 4-lq ANALYSIS W •/•-r•--"•’ Cnusolidated Valtee Aircraft Curpnualiln A . . PREPAREDB Cu urw4 I u~T~t- JOBSI REPORT No.VL...YJ I 4 w-v 7L~-c~s~1 -F ~J ¾NW4 C41 7A/d.) 64-C~? ?sZ).C14,s’ FW 444 6-46 UTILITY REPORT SHEEF 7 ANLSSWINIG PAGE - PREAPD Y OL Euiisnlidated Vuhlee

  13. Global solutions to a chemotaxis model with consumption of chemoattractant

    NASA Astrophysics Data System (ADS)

    Wang, Liangchen; Mu, Chunlai; Hu, Xuegang

    2016-08-01

    This paper is devoted to the following chemotaxis system u_t=nabla\\cdot(D(u)nabla u)-nabla\\cdot(S(u)nabla v),quad &xin Ω,quad t>0, v_t=Δ v-uv,quad &xinΩ,quad t>0, under homogeneous Neumann boundary conditions in a smooth bounded domain {Ωsubset {R}^n} ({n≥2}), not necessarily being convex. There are some constants {c_D > 0}, {c_S > 0}, {min{R}} and {qin{R}} such that D(u) ≥ c_D(u+1)^{m-1} quad{and} quad S(u)≤ c_S(u+1)^{q-1}quad for all u≥0. If {q < m+n+2/2n}, it is shown that the model possesses a unique global classical solution which is uniformly bounded; if {q < m/2+n+2/2n}, the global existence of solution is established.

  14. Thermodynamics and cement science

    SciTech Connect

    Damidot, D.; Lothenbach, B.; Herfort, D.; Glasser, F.P.

    2011-07-15

    Thermodynamics applied to cement science has proved to be very valuable. One of the most striking findings has been the extent to which the hydrate phases, with one conspicuous exception, achieve equilibrium. The important exception is the persistence of amorphous C-S-H which is metastable with respect to crystalline calcium silicate hydrates. Nevertheless C-S-H can be included in the scope of calculations. As a consequence, from comparison of calculation and experiment, it appears that kinetics is not necessarily an insuperable barrier to engineering the phase composition of a hydrated Portland cement. Also the sensitivity of the mineralogy of the AFm and AFt phase compositions to the presence of calcite and to temperature has been reported. This knowledge gives a powerful incentive to develop links between the mineralogy and engineering properties of hydrated cement paste and, of course, anticipates improvements in its performance leading to decreasing the environmental impacts of cement production.

  15. Accelerated growth of calcium silicate hydrates: Experiments and simulations

    SciTech Connect

    Nicoleau, Luc

    2011-12-15

    Despite the usefulness of isothermal calorimetry in cement analytics, without any further computations this brings only little information on the nucleation and growth of hydrates. A model originally developed by Garrault et al. is used in this study in order to simulate hydration curves of cement obtained by calorimetry with different known hardening accelerators. The limited basis set of parameters used in this model, having a physical or chemical significance, is valuable for a better understanding of mechanisms underlying in the acceleration of C-S-H precipitation. Alite hydration in presence of four different types of hardening accelerators was investigated. It is evidenced that each accelerator type plays a specific role on one or several growth parameters and that the model may support the development of new accelerators. Those simulations supported by experimental observations enable us to follow the formation of the C-S-H layer around grains and to extract interesting information on its apparent permeability.

  16. A Survey of the Role of Noncovalent Sulfur Interactions in Drug Design.

    PubMed

    Beno, Brett R; Yeung, Kap-Sun; Bartberger, Michael D; Pennington, Lewis D; Meanwell, Nicholas A

    2015-06-11

    Electron deficient, bivalent sulfur atoms have two areas of positive electrostatic potential, a consequence of the low-lying σ* orbitals of the C-S bond that are available for interaction with electron donors including oxygen and nitrogen atoms and, possibly, π-systems. Intramolecular interactions are by far the most common manifestation of this effect, which offers a means of modulating the conformational preferences of a molecule. Although a well-documented phenomenon, a priori applications in drug design are relatively sparse and this interaction, which is often isosteric with an intramolecular hydrogen-bonding interaction, appears to be underappreciated by the medicinal chemistry community. In this Perspective, we discuss the theoretical basis for sulfur σ* orbital interactions and illustrate their importance in the context of drug design and organic synthesis. The role of sulfur interactions in protein structure and function is discussed and although relatively rare, intermolecular interactions between ligand C-S σ* orbitals and proteins are illustrated.

  17. Reactions of N-phosphorylated thioamides with chloroacetic derivatives

    SciTech Connect

    Zabirov, N.G.; Cherkasov, R.A.; Pudovik, A.N.

    1986-11-20

    N-Phosphorylated thioamides of carboxylic acids in reactions with chloroacetic derivatives form only products of S-alkylation on the sulfur of the C=S group. The S-alkylation products do not suffer isomerization into products of N-alkylation or of X-alkylation on the sulfur or oxygen atom of the P=X group. By a study of the reactions of iminobis(diphenyl-phosphine sulfide) with chloroacetic derivatives it was shown that the replacement of the C=S group by P=S leads to the formation of products of S-alkylation on the sulfur atom of the P=S group. A mechanism is proposed for the reactions studied, based on results from a complete IR and NMR spectral analysis.

  18. New insights into water bonding during early tricalcium silicate hydration with quasielastic neutron scattering

    SciTech Connect

    Gutberlet, T.; Hilbig, H.; Beddoe, R.E.; Lohstroh, W.

    2013-09-15

    New information on the water bonding during the first 36 h of hydration of tricalcium silicate was obtained using the high neutron flux at the sample position of the time-of-flight spectrometer (TOFTOF), FRM II in Garching, Germany, together with {sup 29}Si NMR and X-ray diffraction measurements. A rapid increase in the amount of constrained water was observed at the beginning of the induction period. This is attributed to the formation of an early C-S-H with a large specific surface area (around 800 m{sup 2}/g). During subsequent hydration, the amount of constrained water, as given by the total surface area of the hydration products, is controlled by (a) the formation of new metastable early C-S-H which increases total surface area and (b) polymerisation processes which reduce total surface area. The relative contribution of these processes varies during hydration.

  19. FP-180 Water Motor AFFF Proportioner First Article Procedure and Evaluation

    DTIC Science & Technology

    1989-07-20

    Fil E W Y. . Naval Research Laboratory Washington, DC 20375-500 NRL Memorandum Report 6507 FP-180 Water Motor AFFF Proportioner First Article...Procedure and Evaluation CI C.R. FULPER, R.L. GIPE, C.L. WmTEHuRST, R.E. BURNS,* R.J. OUELLET* E AND C.W. SEIGMANN* Navy Technology Center for Safety and...9-Z9-ZZ9 C C S C S Sd. 33 Li 3Li LL CCZCZCC oxd0 d00. ma’ i IALi L IA - 59 E ~ A in9- CEE CD Cj I- C. UIL 0- e cu z C- w - w~ w at z 40 0 I U W 0 IL

  20. Magma Ocean Depth and Oxygen Fugacity in the Early Earth--Implications for Biochemistry.

    PubMed

    Righter, Kevin

    2015-09-01

    A large class of elements, referred to as the siderophile (iron-loving) elements, in the Earth's mantle can be explained by an early deep magma ocean on the early Earth in which the mantle equilibrated with metallic liquid (core liquid). This stage would have affected the distribution of some of the classic volatile elements that are also essential ingredients for life and biochemistry - H, C, S, and N. Estimates are made of the H, C, S, and N contents of Earth's early mantle after core formation, considering the effects of variable temperature, pressure, oxygen fugacity, and composition on their partitioning. Assessment is made of whether additional, exogenous, sources are required to explain the observed mantle concentrations, and areas are identified where additional data and experimentation would lead to an improved understanding of this phase of Earth's history.

  1. Sulphur geodynamic cycle

    PubMed Central

    Kagoshima, Takanori; Sano, Yuji; Takahata, Naoto; Maruoka, Teruyuki; Fischer, Tobias P.; Hattori, Keiko

    2015-01-01

    Evaluation of volcanic and hydrothermal fluxes to the surface environments is important to elucidate the geochemical cycle of sulphur and the evolution of ocean chemistry. This paper presents S/3He ratios of vesicles in mid-ocean ridge (MOR) basalt glass together with the ratios of high-temperature hydrothermal fluids to calculate the sulphur flux of 100 Gmol/y at MOR. The S/3He ratios of high-temperature volcanic gases show sulphur flux of 720 Gmol/y at arc volcanoes (ARC) with a contribution from the mantle of 2.9%, which is calculated as 21 Gmol/y. The C/S flux ratio of 12 from the mantle at MOR and ARC is comparable to the C/S ratio in the surface inventory, which suggests that these elements in the surface environments originated from the upper mantle. PMID:25660256

  2. GMES Sentinel-1 Analysis of Marine Applications Potential (AMAP)

    DTIC Science & Technology

    2008-10-01

    Incidence Angle [deg] R C S S up pr es si on [d B ] Oleyl Alchohol : < 1.0e−007 m, C−VV U=12 m/s U=10 m/s U=8 m/s U=6 m/s b) 25 30 35 40 45 50 55 −20...15 −10 −5 0 5 Incidence Angle [deg] R C S S up pr es si on [d B ] Oleyl Alchohol : < 1.0e−007 m, C−HH U=12 m/s U=10 m/s U=8 m/s U=6 m/s Figure...for smaller vessels that have limited capability to operate within ice. Due to its lack of mechanical strength, smooth new ice deforms (and

  3. Stationary and quasistationary models of carbon redistribution in austenitic steel weldments: II. Polycomponent systems

    NASA Astrophysics Data System (ADS)

    Kučera, Jar; Kozák, V.; Million, B.; Stránský, K.

    1986-04-01

    In this IInd part of our paper (Czech. J. Phys. B 35 (1985) 1355) the analysis of carbon uphill diffusion data is presented. The analysed data were measured in the polycomponent steel weldments. All of the data satisfy well the conditions for stationary model application. On the basis of the present analysis the carbon diffusivities ( D {1/*}) appertaining to a non-alloyed austenite, the activity (ɛ{C/s}) and diffusion ( β {C/s}) interaction coefficients are evaluated. A “Si anomaly” in Darken's experiments is observed and discussed. On the contrary to the other substitutional elements Mn, Cr and Mo, which decrease simultaneously C-activity and C-diffusivity, silicon increases the carbon activity and, at the same time, decreases its diffusivity in the Fe-C-Xs austenitic solid solutions.

  4. Discrete kinetic eigenmode spectra of electron plasma oscillations in weakly collisional plasma: A numerical study

    NASA Astrophysics Data System (ADS)

    Black, Carrie; Germaschewski, Kai; Bhattacharjee, Amitava; Ng, C. S.

    2013-01-01

    It has been demonstrated that in the presence of weak collisions, described by the Lenard-Bernstein (LB) collision operator, the Landau-damped solutions become true eigenmodes of the system and constitute a complete set [C.-S. Ng et al., Phys. Rev. Lett. 83, 1974 (1999) and C. S. Ng et al., Phys. Rev. Lett. 96, 065002 (2004)]. We present numerical results from an Eulerian Vlasov code that incorporates the Lenard-Bernstein collision operator [A. Lenard and I. B. Bernstein, Phys. Rev. 112, 1456 (1958)]. The effect of collisions on the numerical recursion phenomenon seen in Vlasov codes is discussed. The code is benchmarked against exact linear eigenmode solutions in the presence of weak collisions, and a spectrum of Landau-damped solutions is determined within the limits of numerical resolution. Tests of the orthogonality and the completeness relation are presented.

  5. Department of the Air Force Supporting Data for Amended Fiscal Year 1988/89 Biennial Budget Estimates Submitted to Congress February 1988. Descriptive Summaries, Research, Development, Test and Evaluation

    DTIC Science & Technology

    1988-02-01

    03 c •H 33 3 t- es y ki c S i C e e ja oj IN O 0 fi OJ03SOIH3— 100 o\\ y c s 4J a— o o ■■1 0 3 41 M c pH i-l 01... 100 ■ -4 a vi r4 ->» co • -3 co i-i CM 41 CJ 1 ^-" ■3 a B V \\0 ^H i—i ■ u ’H...O 4J OfHOUrlOf 41 •^s«*i- isa u ti u H • ■0 0 u fl S 41 Id TJ fl r* 01 ti eg 01 -55 < i4 a w: Id 60- TJ

  6. Calculating the branch points of the eigenvalues of the Coulomb spheroidal wave equation

    NASA Astrophysics Data System (ADS)

    Skorokhodov, S. L.; Khristoforov, D. V.

    2007-11-01

    A method for computing the eigenvalues λ mn ( b, c) and the eigenfunctions of the Coulomb spheroidal wave equation is proposed in the case of complex parameters b and c. The solution is represented as a combination of power series expansions that are then matched at a single point. An extensive numerical analysis shows that certain b s and c s are second-order branch points for λ mn ( b, c) with different indices n 1 and n 2, so that the eigenvalues at these points are double. Padé approximants, quadratic Hermite-Padé approximants, the finite element method, and the generalized Newton method are used to compute the branch points b s and c s and the double eigenvalues to high accuracy. A large number of these singular points are calculated.

  7. Effect of chromatic aberration on atomic-resolved spherical aberration corrected STEM images.

    PubMed

    Kuramochi, Koji; Yamazaki, Takashi; Kotaka, Yasutoshi; Ohtsuka, Masahiro; Hashimoto, Iwao; Watanabe, Kazuto

    2009-12-01

    The effect of the chromatic aberration (C(c)) coefficient in a spherical aberration (C(s))- corrected electromagnetic lens on high-resolution high-angle annular dark field (HAADF) scanning transmission electron microscope (STEM) images is explored in detail. A new method for precise determination of the C(c) coefficient is demonstrated, requiring measurement of an atomic-resolution one-frame through-focal HAADF STEM image. This method is robust with respect to instrumental drift, sample thickness, all lens parameters except C(c), and experimental noise. It is also demonstrated that semi-quantitative structural analysis on the nanometer scale can be achieved by comparing experimental C(s)- corrected HAADF STEM images with their corresponding simulated images when the effects of the C(c) coefficient and spatial incoherence are included.

  8. [Computer-tomographic cisternography with amipaque].

    PubMed

    Kornienko, V N; Saakian, O A

    1984-01-01

    As compared to ordinary computer tomography, computer-aided tomographic cisternography (CTC) demonstrates better the anatomy of the brain cisterns and at the same time gives an idea of the processes of c.s.f. circulation in dynamic examination. The article discusses the results of examination of 112 patients with various neurosurgical diseases by means of CTC. A detailed classification of the brain cisterns is given. The authors show the advantages of the method in examination of patients with small three-dimentional processes in the chiasma-sellar region, cerebellopontine angle, and posterior cranial fossa, with the syndrome of an "empty" sella turcica, cystic structures, and disorders of c.s.f. circulation.

  9. 12. 'Portal Strut for 1 208'101/2' C. to C. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. 'Portal Strut for 1 - 208'-10-1/2' C. to C. End Pins S. Tr. Thro. Skew Span, 6th Crossing of Sacramento River, So. Pac. Co., The Phoenix Bridge Co., C.O. 836D, Drawing No. 12, Scale - 1' = 1', Engineer - B.M. Krohn, May 22nd `01, J.C.S.' - Southern Pacific Railroad Shasta Route, Bridge No. 301.85, Milepost 301.85, Pollard Flat, Shasta County, CA

  10. Effects of High Terrestrial Altitude on Military Performance

    DTIC Science & Technology

    1989-04-18

    Title Effects of High Terrestrial Altitude on Military Performance Author( s ) Louis E. Banderet and Richard L. Burse Intended for publication in Handbook...34’- <-𔃾 DA UJ 2496 PRIVOUS EDITIONS WILL II USED C . S fnt Effects of High Terrestrial Altitude on Military Performance 1 2 Louis E. Banderet...inadequate oxygen which can ad- versely affect military performance ( Disease threat, 1979; U.S. Army, 1975). Much information of military importance about

  11. Development of Iron Aluminides.

    DTIC Science & Technology

    1986-03-01

    IRON ALUMINIDES G. Culbertson C. S. Kortovich TRW Inc. Materials & Manufacturing Center 23555 Euclid Avenue Euclid, Ohio 44117 March 1986 Final Report...NO. N I 1 Ti TILE Inciuav Securty ltassificafton, 621 02F 2420 02 1 flevelonment of Iron Aluminides 12 PERSONAL AUJTHOR(S) rl Cul bertson, C~r...rnumber) nrceqrarl w.as conducted to develop improved iron- aluminide alloys with higher qlevated ernerature strength and room temperature ductility

  12. Asymptotic Conservativeness and Efficiency of Kruskal-Wallis Test for K Dependent Samples.

    DTIC Science & Technology

    1980-05-01

    EF I{EN C!s (1 DeGroot , Morris H., Feder, Paul 1. and Goel, Prem K. (1971), "Matchmaking", Ann. Math. Statist. 42, 578-593. (’) Esary, J. D. and...270). However, if the sample is broken (c.f. DeGroot , Feder, and Goel (1971)), all the test procedures for testing H0 are no longer valid. It is

  13. Bibliography on Cold Regions Science and Technology, Volume 45, Part 1

    DTIC Science & Technology

    1991-12-01

    T.D. Prowse 45-199 Ice cores, Ice composition, Isotope analysis, Antarc- and C.S.L. Ommanney. p.103-134. Evolution of Quaternary glaciers and...looking radar. Radar photography. 45-273 radar. Snow surface. Snow cover structure. Remote 45-289 Wave evolution in the marginal Ice zone: model pre...thickness. ruzhn),kh sten zhulykh zdanil serii 97). Ice growth, Surface properties, Boundary layer. Phase Rapid deterioration of the Wkest Antarctic ice

  14. 76 FR 72911 - TRICARE, Formerly Known as the Civilian Health and Medical Program of the Uniformed Services...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-28

    ... Rico 53 Beneficiary cost-share: Beneficiary cost-share (other than dependents of Active Duty members... (Maine, N.H., Vt., $315 $234 Mass., R.I., Conn.) Mid-Atlantic: (N.Y., N.J., Penn.) 343 258 Midwest: East...., S.D., 302 225 Neb., Kan.) South: South Atlantic (Del., Md., DC, 323 244 Va., W.Va., N.C., S.C.,...

  15. 34 CFR 682.210 - Deferment.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... individual who is— (i) A Reserve of an Armed Force ordered to active duty under 10 U.S.C. 12301(a), 12301(g), 12302, 12304 or 12306; (ii) A retired member of an Armed Force ordered to active duty under 10 U.S.C....S.C. 101(d)(1) except that it does not include active duty for training or attendance at a...

  16. Dynamic Tensile Testing of Structural Materials Using a Split Hopkinson Bar Apparatus

    DTIC Science & Technology

    1980-10-01

    Stress-Strain Curves, Tungsten Alloy 90W-7Ni-3Fe 38 24 Stress-Strain Curves, Depleted Uranium 39 vi AFWAL-TR-80-4053 LIST OF ILLUSTRATIONS (CONCLUDED...IN718 (a) (b) 90-7-3W (a); No swaging (b) DU (a) (b) ETP CU (a) Annealed at 1000F, 1 hr; (c) S-65 Be (a) Etch to remove 0.004" per surface; (c) (a

  17. The Impact of Moderate-Altitude Staging on Pulmonary Arterial Hemodynamics after Ascent to High Altitude

    DTIC Science & Technology

    2010-01-01

    et al., 1956; Sime et al., 1974). The magnitude of the PAP in- crease plays an important role in the development of high altitude pulmonary edema ...implications for travelers to high altitude. High altitude pulmonary edema (HAPE) is an important cause of high altitude morbidity and mortality, and...P., and Oelz O. (1991). Prevention of high-altitude pulmonary edema by nifedipine. N. Engl. J. Med. 325:1284–1289. Beidleman B.A., Fulco C.S., Muza

  18. Calculating Correlated Color Temperatures Across the Entire Gamut of Daylight and Skylight Chromaticities

    DTIC Science & Technology

    1999-09-20

    c o i b f t c c c c w n c s p t s Calculating correlated color temperatures across the entire gamut of daylight and skylight chromaticities Javier...temperature ~CCT!, yet existing equations for calculating CCT from chromaticity coordinates span only part of this range. To improve both the gamut and accuracy...00-1999 to 00-00-1999 4. TITLE AND SUBTITLE Calculating correlated color temperatures across the entire gamut of daylight and skylight

  19. Absolute and convective instabilities of parallel propagating circularly polarized Alfvén waves: Beat instability

    NASA Astrophysics Data System (ADS)

    Simpson, D.; Ruderman, M. S.

    2005-06-01

    Ruderman and Simpson [Phys. Plasmas 11, 4178 (2004)] studied the absolute and convective decay instabilities of parallel propagating circularly polarized Alfvén waves in plasmas where the sound speed cS is smaller than the Alfvén speed υA. We extend their analysis for the beat instability which occurs in plasmas with cS>υA. We assume that the dimensionless amplitude of the circularly polarized Alfvén wave (pump wave), a, is small. Applying Briggs' method we study the problem analytically using expansions in power series with respect to a. It is shown that the pump wave is absolutely unstable in a reference frame moving with the velocity U with respect to the rest plasma if UlUr, the instability is convective. The signaling problem is studied in a reference frame where the pump wave is convectively unstable. It is shown that the spatially amplifying waves exist only when the signaling frequency is in two narrow symmetric frequency bands with the widths of the order of a3. These results enable us to extend for the case when cS>υA the conclusions, previously made for the case when cS<υA, that circularly polarized Alfvén waves propagating in the solar wind are convectively unstable in a reference frame of any spacecraft moving with the velocity not exceeding a few tens of km/s in the solar reference frame. The characteristic scale of spatial amplification for these waves exceeds 1a.u.

  20. Cavitation Damage Mechanisms: Experimental Study of Cavitation in a Spool Valve.

    DTIC Science & Technology

    1980-02-01

    oscillating conditions. SECURITY CLASSIFICATION OF T-1 PAGrWhon Date Enteted) 6 L PREFACE This final report is the result of a two -year contract...School of Civil Engineering, Georgia Institute of Technology. The two co-principal investigators were Dr. C. S. Martin, Professor of Civil Engineering...mechanisms in a hydraulic flow system. This report is the culminatioan of the experimental phase of the program. A companion study entitled "Cavitation Damage

  1. 75 FR 36782 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-28

    ...) (individual) 2. MONDRAGON DE RODRIGUEZ, Mariela, c/o MARIELA DE RODRIGUEZ Y CIA. S. EN C., Cali, Colombia; c/o.../o INVERSIONES MONDRAGON Y CIA. S.C.S., Cali, Colombia; c/o MARIELA MONDRAGON DE R. Y CIA. S. EN C... Y CIA. LTDA., Cali, Colombia; c/o M. RODRIGUEZ O. Y CIA. S. EN C., Cali, Colombia; c/o...

  2. Computer Modeling of Complete IC Fabrication Process.

    DTIC Science & Technology

    1984-01-01

    Venson Shaw 10. C. S. Chang 11. Elizabeth Batson 12. Richard Pinto 13. Jacques Beauduoin SPEAKERS: 1. Tayo Akinwande 2. Dimitri Antoniadis 3. Walter...Numerical Model of Polysilicon Emitter Contacts in Bipolar Transistors,’ To be published IEEE Trans. Electron Devices. [34] M. R. Pinto , R. W. Dutton...Received PhD, Spring 1082) Balaji Swaminathan (Received PhD, Spring 1983) Len Mei Research Associate Michael Kump Research Assistant Mark Pinto Research

  3. Mixing Effects of Pylon-Aided Fuel Injection Located Upstream of a Flameholding Cavity in Supersonic Flow

    DTIC Science & Technology

    2005-03-01

    Hypersonic Technology Vision Vehicles and Development Dreams,” AIAA Paper 99-4978, November 1999. 6Rogers, R.C., Capriotti , D.P., and Guy, R.W...Combustors,” Marble, F.E., Zukoski, E.E., Jacobs, J.W., Hendrick, G.J., Waitz, I.A., “Shock Northam, G.B., Capriotti , D.P., Byington, C.S., and

  4. A Potential Based Panel Method for the Analysis of Marine Propellers in Steady Flow

    DTIC Science & Technology

    1987-07-01

    NASA, 1978. [3] R.L. Carmichael and L.L. Erickson. PAN AIR - a higher order panel method for predicting subsonic and supersonic linear potential...with Stokes theorem, JV ■tdl = jj{V xV).ndS. (B.2) c s Put V = ax P, where a is an arbitrary constant vector (a 7^ 0), then (ax P) ■f=a-{P xi

  5. Boundedness in a quasilinear chemotaxis-haptotaxis system with logistic source

    NASA Astrophysics Data System (ADS)

    Liu, Ji; Zheng, Jiashan; Wang, Yifu

    2016-04-01

    In this paper, we consider the quasilinear chemotaxis-haptotaxis system u_t=nabla\\cdot(D(u)nabla u)-nabla\\cdot(S_1(u)nabla v)-nabla\\cdot(S_2(u)nabla w)+uf(u,w),quad xinΩ, t > 0,v_t=Δ v-v+u,quad xinΩ, t > 0,w_t=-vw,quad xinΩ, t > 0 in a bounded smooth domain {Ωsubset R^n (n≥1)} under zero-flux boundary conditions, where the nonlinearities {D, S_1} and {S_2} are assumed to generalize the prototypes D(u)=CD(u+1)^{m-1}, S_1(u)=C_{S_1}u(u+1)^{q_1-1} quad {and} quad S_2(u)=C_{S_2}u(u+1)^{q_2-1} with {C_D,C_{S_1},C_{S_2} > 0, m,q_1,q_2in R} and {f(u,w)in C^1([0,+infty)×[0,+∞))} fulfills f(u,w)≤ r-buquad {for all} ~u≥ 0quad {and} quad w≥ 0, where {r > 0, b > 0.} Assuming nonnegative initial data {u_0(x)in W^{1,∞}(Ω),v_0(x)in W^{1,∞}(Ω)} and {w_0(x)in C^{2,α}(barΩ)} for some {αin(0,1),} we prove that (i) for {n≤2,} if q_1,q_2\\ < m+2/n-1,} then {(star)} has a unique nonnegative classical solution which is globally bounded, (ii) for {n > 2,} if {max{q_1,q_2} < m+2/n-1} and {m > 2-2/n} or {max{q_1,q_2} < m+2/n-1} and {m≤ 1,} then {(star)} has a unique nonnegative classical solution which is globally bounded.

  6. Hazard Rate Estimation for Censored Data via Strong Representation of the Kaplan-Meier Estimator.

    DTIC Science & Technology

    1985-08-01

    of bounded variation (condition (k4).) The process( /n 1 has mean zero and covariance SA t (26) r(s,t) E E[C(s) C(t)] - F(s) F(t) f [(u)]- 2 d Lj(u...continuous with density f(x) > 0 at x. Suppose k is of bounded variation and is continuous. Then fn(x) admits the strong approximation on the interval [0,T

  7. Internal Telephone Billing Rates - A Novel Application of Non-Atomic Game Theory.

    DTIC Science & Technology

    1977-04-01

    variation if it is the difference between two monotonic games. The space of all games of bounded variation is called By. If Q is any space of games, Q...is a real-valued set function on C satisfying v(+) = 0. A game v is monotonic if for all S,T ~ C , S ~ T ~ v(S) < v(T). A game V IS of bounded

  8. Verified Separate Compilation for C

    DTIC Science & Technology

    2015-06-01

    as register spilling, that introduce compiler-managed (private) memory regions into function stack frames, and C???s stack-allocated addressable...spilling, that introduce compiler-managed (private) memory regions into function stack frames, and C’s stack-allocated addressable local variables...14 1.4.5 The Bleeding Edge . . . . . . . . . . . . . . . . . . . . . 14 2 The CompCert Memory Model 17 2.1 Memory Model

  9. Copper/silver-mediated cascade reactions for the construction of 2-sulfonylbenzo[b]furans from trans-2-hydroxycinnamic acids and sodium sulfinates.

    PubMed

    Li, Hong-Shuang; Liu, Gang

    2014-01-17

    Efficient construction of 2-sulfonylbenzo[b]furans is achieved from readily available trans-2-hydroxycinnamic acids and sodium sulfinates mediated by the CuCl2·2H2O/AgTFA system under mild conditions. This unprecedented synthetic protocol provides expedient access to a series of products in one step via a protodecarboxylation/C-S bond formation/C-O bond formation cascade.

  10. Cardiovirulent coxsackieviruses and the decay-accelerating factor (CD55) receptor.

    PubMed

    Martino, T A; Petric, M; Brown, M; Aitken, K; Gauntt, C J; Richardson, C D; Chow, L H; Liu, P P

    1998-05-10

    Group B coxsackieviruses are etiologically linked with many human diseases including acute myocarditis and associated chronic dilated cardiomyopathy. Well-established CVB3 cardiovirulent strains (CVB3c(s)) with known phenotypic difference have been used to study the pathogenesis of virus-induced heart disease. The receptor-binding characteristics of cardiovirulent CVB3 are not known, but may represent one mechanism accounting for differences in disease virulence. In this study, interactions between CVB3c(s) and the decay-accelerating factor (DAF or CD55) cell surface receptor were examined. Anti-DAF monoclonal antibodies (MAbs) blocked virus binding and infection of susceptible HeLa cells. Virus binding was significantly reduced by treatment of these cells with phosphatidylinositol phospholipase C enzyme, which rendered them DAF-deficient CVB3c(s) exhibited a differential propensity for the DAF receptor, as several cardiovirulent strains interacted more strongly than others. However, virus binding and infection was always most effectively blocked by MAbs directed against the SCR 2 and 3 domains of DAF, suggesting that binding occurs at a similar site(s) on the molecule for all strains. Virus binding and internalization were associated with DAF down-regulation at the cell surface, as monitored by flow cytometry analysis. Cardiovirulent CVB3 did not interact with molecules functionally and/or structurally related to DAF, including CD35, CD46, Factor H, or C4-binding protein. Adenovirus type 2 (Ad2) does not use the DAF receptor. However, competitive binding assays between Ad2 and CVB1-6, CVB3c(s), anti-DAF MAbs, or DAF-reduced cells indicated that DAF is associated with Ad2 receptors on the HeLa cell membrane. In summary, this study indicates that DAF is an attachment receptor for cardiovirulent CVB3 and that DAF interaction may be important in the pathogenesis of CVB-mediated heart disease.

  11. Feasibility of Mind-Body Intervention to Promote Wellness in Injured Soldiers

    DTIC Science & Technology

    2012-11-06

    health treatment. It is a self-care practice that is more accessible than most yoga practices and can be adapted to those with injuries. Qigong has been...New York: HarperCollins. Hoge, C. W., Auchterlonie, J. L., & Milliken, C. S. (2006). Mental health problems, use of mental health services, and...Perceived Stress Scale (PSS), Pittsburgh Sleep Quality Index (PSQI), Patient Health Questionnaire -15 (PHQ-15), and a Client Satisfaction

  12. AFRRI Reports, Third Quarter 1993

    DTIC Science & Technology

    1993-10-01

    demonstrated that glucan , a beta -1,3- exerted its antibacterial activity either directly against or- polysaccharide immunomodulator, is capable of...h. Isolates were identified by standard criteria (16, La.). This glucan preparation was a soluble (1-3)- beta -D- 33). glucan isolated from the inner...particulate glucan . Int. J. pharmacol. IL407-425. Cancer 24-.773-779. 25. Patches, Mi. I, T. J. MacVklde, and W. E. Jackas". 1989. 5. Easas.., C. S. F

  13. National Dam Safety Program. St. Joe State Park Dam (MO 30277), Mississippi - Kaskaskia - St. Louis Basin, St. Francois County, Missouri. Phase I Inspection Report.

    DTIC Science & Technology

    1980-02-01

    1.,* *3.* 0 *2A~A t~ *0 -A * aCCa .. *~...r. -r * 4~* C- * .C S. S. * Cr *.J 4 C *a= * A-17 C C C. L, CO CT cC Z ! C T, C...Spill/ oy 5ca a/o? road F 8570 ro. 0 64 550 560 450 900 _ _ _ _ _ _ _ _ _ _ _ _ _ _ 5,., p1 /wiy A c/I 20 /0 /0 50OMNGFQ SPI.L WAY A CROSS SET/ AND

  14. Military Air Power: The CADRE Digest of Air Power Opinions and Thoughts

    DTIC Science & Technology

    2007-11-02

    prevent a war are much lighter than those that will, if not prevented. be absolutely necessary to maintain it. Benjamin Franklin It is...a rider, the battle was lost. Benjamin Franklin The tiniest deviations at the beginning of a motion can lead to huge differences at later...that ended World War I; author of The Principles of War (1903). Forester, C. S. British novelist and naval historian. Franklin , Benjamin . American

  15. A Survey of the Invasive Aquatic and Riparian Plants of the Lower Rio Grande, 2004

    DTIC Science & Technology

    2005-09-01

    ER D C /E L SR -0 5- 1 Aquatic Plant Control Research Program A Survey of the Invasive Aquatic and Riparian Plants of the Lower Rio Grande... Plants of the Lower Rio Grande, 2004 Chetta S. Owens Analytical Services Inc. Lewisville Aquatic Ecosystem Research Facility U.S. Army Engineer...Reclamation, Denver, CO. Owens, C. S., Grodowitz, M. J., and Nibling, F. (2005). “A survey of the invasive aquatic and riparian plants of the lower Rio

  16. Integrated Fundamental Research on Current Collection

    DTIC Science & Technology

    1993-06-01

    Sliding Modes". C. Gao and D. Kuhlmann-Wilsdorf, in "Tribology of Composite Materials", (Eds. P.K. Rohatgi, P.J. Blau and C.S. Yust, ASM Intl...moycrine lorsque Xaugmente. on observe une elevation transitoire de la contrainte d’i&oulement plastique et du coefficient de durcissement par ecrouissage...interfacial films while the generally unknown diameter metal fibers (simulating a composite "constriction resistance" is negligible. There- with a

  17. 2-[3-(Naphthalen-2-yl)phen-yl]naph-thal-ene.

    PubMed

    Wolfenden, Mark L; Dhar, Raj K; Fronczek, Frank R; Watkins, Steven F

    2013-02-01

    The title compound, C(26)H(18), consists of a benzene ring with meta-substituted 2-naphthalene substituents, which are essentially planar [r.m.s. deviations = 0.022 (1) and 0.003 (1) Å]. The conformation is syn, with equivalent torsion angles about the benzene-naphthalene bonds of -36.04 (13) and +34.14 (13)°. The mol-ecule has quasi-C(s) mol-ecular symmetry.

  18. Second Colloquim on the Scattering of Ultrasonic Waves (Deuxieme Colloque sur la Diffusion des Ondes Ultrasonores).

    DTIC Science & Technology

    1985-01-29

    geneities; effective media ,* short sound pulses,’ long sound pulses; inverse scattering; acoustic spectroscopv. 20. ABSTRACT (Conmitae mi overie side it...Layered Media , Academic Press, New York, 1960. [3] 0.1. Diachok et W.G. Mayer, Conical reflection of ultrasound from a liquid- solid interface, J. Acoust...dilatational d, and transverse t) wave speeds and densities in the external (or layer) media , respectively. The quantities C and C s a depend [6] on these

  19. Spatially Resolved Photocurrent Mapping of Operating Organic Photovoltaic Devices Using Atomic Force Photovoltaic Microscopy

    DTIC Science & Technology

    2008-01-01

    106, 191 2006. 14H. R. Moutinho, R. G. Dhere, C. S. Jiang, M. M. Al-Jassim, and L. L. Kazmerski, Thin Solid Films 514, 150 2006. 15D. C. Coffey...characterize spatially localized inhomogeneities in organic photovoltaic (OPV) devices. In AFPM, a biased cAFM probe is raster scanned over an array...technique, atomic force photovoltaic microscopy (AFPM), has been developed to characterize spatially localized inhomogeneities in organic photovoltaic

  20. Transition-metal-free tandem radical thiocyanooxygenation of olefinic amides: a new route to SCN-containing heterocycles.

    PubMed

    Yang, Hua; Duan, Xin-Hua; Zhao, Jing-Feng; Guo, Li-Na

    2015-04-17

    A novel transition-metal-free tandem radical thiocyanooxygenation of olefinic amides with potassium thiocyanate has been developed under mild conditions. This method allows a reliable and practical access to diverse SCN-containing heterocycles bearing a wide range of functional groups in good to excellent yields. Furthermore, this tandem reaction provides a simple method for the construction of C-O and C-S bonds in one step.

  1. Transition-metal-free cross-coupling of thioethers with aryl(cyano)iodonium triflates: a facile and efficient method for the one-pot synthesis of thiocyanates.

    PubMed

    Zhu, Dan; Chang, Denghu; Shi, Lei

    2015-04-28

    A novel transition-metal-free cross-coupling method for the one-step synthesis of thiocyanates via the C-S bond cleavage of readily available thioethers with aryl(cyano)-iodonium triflates as the cyanating agent is developed. This process features relatively broad substrate scopes, less-toxic hypervalent iodine reagents, mild operating conditions, excellent functional group compatibilities, and affords various thiocyanates in moderate to good yields.

  2. Report on the International Workshop on Progress towards Molecular Scale Electronics Held in University of Durham on 25-28 March 1990

    DTIC Science & Technology

    1990-03-28

    experimentally that the electrical signals are subject to modulation by the load resistance , the electrical characteristics of the supporting inert...Laboratoire des Materiaux Moleculaires, C.N.R.S. , 2 rue Henri-Dunant, 94320 Thiais, France Conjugated oligomers, such as thiophene derivatives, can be...and A. Skoulios Institute de Physique et Chimie des Materiaux de Strasbourg Groupe des Materiaux Organiques, I.C.S. Strasbourg, France R. D. Miller IBM

  3. An Oral DNA Vaccine Encoding Endoglin Eradicates Breast Tumors by Blocking Their Blood Supply

    DTIC Science & Technology

    2006-05-01

    Angiogenesis and Protect Against Growth of Breast Cancer Metastases 91 [24] R. Xiang, H.N. Lode, T.H. Chao , J.M. Ruehlmann, C.S. Dol- man, F. Rodriguez, J.L...1-0562 (to R.X.) and EMD -Lexigen Research Center Billerica, MA grant SFP 1330 (to R.A.R). This is The Scripps Research Institute’s manu- script number

  4. An Oral DNA Vaccine Encoding Endoglin Eradicates Breast Tumors by Blocking Their Blood Supply

    DTIC Science & Technology

    2007-05-01

    Cancer Metastases 91 [24] R. Xiang, H.N. Lode, T.H. Chao , J.M. Ruehlmann, C.S. Dol- man, F. Rodriguez, J.L. Whitton, W.W. Overwijk, N.P. Res- tifo and R.A...031079 (to R.A.R) and DAMD 17-02-1-0562 (to R.X.) and EMD -Lexigen Research Center Billerica, MA grant SFP 1330 (to R.A.R). This is The Scripps

  5. Successive copper(I)-catalyzed cross-couplings in one pot: a novel and efficient starting point for synthesis of carbapenems.

    PubMed

    Jiang, Biao; Tian, Hua; Huang, Zuo-Gang; Xu, Min

    2008-07-03

    An efficient approach for synthesizing a series of 2-sulfide carbapenems has been developed using two successive Cu(I)-catalyzed cross-couplings in a single pot. The method involves highly selective intramolecular coupling of lactam and dihaloalkene using 2,2'-bipyridine as a ligand, followed by intermolecular C-S formation in the presence of another ligand (1,10-phenanthroline, PPh 3) and mercaptan.

  6. pi-Conjugated Gradient Copolymers Suppress Phase Separation and Improve Stability in Bulk Heterojunction Solar Cells

    DTIC Science & Technology

    2014-01-01

    discussion Polymer synthesis The gradient copolymers described herein were prepared using a living, chain-growth polymerization method known as catalyst...and C. S. Hsu, Adv. Funct. Mater., 2011, 21, 1723–1732; (d) V. A. Kostyanovsky, D. K. Susarova, A. S. Peregudov and P. A. Troshin, Thin Solid Films ...bromohexyl)thiophene (10 mol%) were synthesized by catalyst transfer polycondensation. Post- polymerization conversion of the side-chain bromides into azides

  7. In Situ Observation of Phase Transformation and Structure Evolution of a 12 pct Cr Ferritic Stainless Steel

    NASA Astrophysics Data System (ADS)

    Song, Changjiang; Guo, Yuanyi; Li, Kefeng; Sun, Fengmei; Han, Qingyou; Zhai, Qijie

    2012-10-01

    This work focuses on an in situ observation of phase transformation of a 12 pct Cr ferritic stainless steel using high-temperature laser scanning confocal microscopy. α→ γ→ δ phase transformation temperatures are determined to be approximately 1073 K and 1423 K (800 °C and 1150 °C), respectively. The onset of phase transformation is found to occur at grain boundaries. When the temperature is beyond 1518 K (1245 °C), the grain growth rate suddenly becomes very high, and the grain growth is related to the self-organizing of adjacent grains. δ→ γ phase transformation has been mostly restrained when cooling rates are in the range of 22.4 K/s to 13.3 K/s (22.4 °C/s to 13.3 °C/s) except for at grain boundaries. Martensitic phase transformation, rather than γ→ α phase transformation, occurs when the cooling rates are in the range of 8.5 K/s to 2.2 K/s (8.5 °C/s to 2.2 °C/s). The starting temperature of martensitic phase transformation is approximately 697 K to 728 K (424 °C to 455 °C) for specimens heated to 1373 K (1100 °C) ( i.e., γ phase field), which is 50 K to 100 K (50 °C to 100 °C) higher than that of specimens heated to 1723 K (1450 °C) ( i.e., δ phase field). Many bulges remain on the surfaces of the specimen heated to 1723 K (1450 °C), and their formation mechanism is analyzed.

  8. Alkene- and alkyne- substituted methylimidazolium bromides: structural effects and Physical properties (Postprint)

    DTIC Science & Technology

    2007-08-01

    1, 3 - butene - 2 , propargyl- 3 , 2 -butyne- 4, and 2 -pent- yne- 5 side chains and their structural and physical proper- ties have been investigated...pargyl bromide, 2 -butyne bromide, 3 - butene bromide and 2 -pen- tyne bromide), methanol (99.93 % A.C.S. HPLC grade) and diethyl ether (anhydrous, 99...zolium halides (X Cl, Br, I), and 1-( 2 -butyne)- 3 - methyl - imidazolium bromide have been mentioned earlier [20, 21, 2328, 38, 39]. However, detailed

  9. Analysis of Army Recruiter Selling Techniques.

    DTIC Science & Technology

    1991-04-01

    that have been put forward in recent years to explain consumer choices and consumer behavior . Each of these will be explored in the following...Allyn and Bacon. Mittelstaedt, R. A. (1971). Criteria for a theory of consumer behavior . In Robert J. Holloway, Robert A. Mittelstaedt, and M...Verkatesan (Eds.), Consumer Behavior (pp. 8-13). Boston: Houghton-Mifflin. 𔃿 Mittelstaedt, R. A. and Madden, C. S. (1980). Lay psychology, marketing

  10. Modeling Nanomechanical Behavior of Calcium-Silicate-Hydrate

    DTIC Science & Technology

    2012-08-01

    ER D C/ G SL T R -1 2 -3 0 Multiscale Modeling of the Structure of Material Modeling Nanomechanical Behavior of Calcium - Silicate -Hydrate...Nanomechanical Behavior of Calcium - Silicate -Hydrate Mei Qiang Chandler and John F. Peters Geotechnical and Structures Laboratory U.S. Army Engineer...DEM) was used to model the nanomechanical behavior of Calcium - Silicate -Hydrate (C-S-H). The inter- particle forces consist of the traditional friction

  11. Army Contigency Contracting.

    DTIC Science & Technology

    1985-11-01

    r I I ;. - L U C A ,. . • - J 01 .1 .1 C.. - 0 . c s U- 101 1. L.J 1 L I.C w - L.. . 4-.- 22...and transportation services as well. The noble intentions of an occupying power would mean r little to a civilian population suffering from basic...PROPOSAL EVALUAT ION NEGOTIATION AWARD CONTRACT ADMINISTRATION * PERFORMANCE A r P C []"O’ PCD GOVERNMENT ACO CONTRACTOR EXPERIENCE COR EXPER I

  12. Non-Destructive Testing of Semiconductors Using Surface Acoustic Wave.

    DTIC Science & Technology

    1983-12-31

    other capacitance measurements such as feedback method [57] and second harmonic technique [116]. The coummon characteristic of all these measurements is...the theoretical TAV versus bias voltage (TAV-V ) is calculated. The detailed discussion of the above procedure and the methods to extract the... capacitance per unit area C -s J5 and C (3.38) d L sc "S. where L = effective space charge width (equation (3.24)). In another method the pulsed bias

  13. Effects of Pharmacologic Intervention on Oxygenation, Lung Water and Protein Leak in the Pseudomonas ARDS Porcine Model. Subtitle: Effects of Pharmacologic and Immunologic Intervention on the Porcine Pseudomonas Model of Adult Respiratory Distress Syndrome (ARDS).

    DTIC Science & Technology

    1992-10-01

    Respiratory Distress Syndrome ( ARDS ) PRINCIPAL INVESTIGATOR: Harvey J. Sugerman, M.D. AUTHORS: Patrick G. Mullen, M.B., F.R.C.S.I., Alastair C.J...Pseudomonas Model of Adult Respiratory Distress Syndrome ( ARDS ) Approved for public release; distribution unlimited 92-29868 Almost twenty-five years after...explosive form of lung injury in critically ill patients, which they termed adult respiratory distress syndrome ( ARDS ), the mortality and

  14. Area, Diagonals, and Circumcircle of a Cyclic Quadrilateral

    ERIC Educational Resources Information Center

    Ayoub, Ayoub B.

    2006-01-01

    In the seventh century, around 650 A.D., the Indian mathematician Brahmagupta came up with a remarkable formula expressing the area E of a cyclic quadrilateral in terms of the lengths a, b, c, d of its sides. In his formula E = [square root](s-a)(s-b)(s-c)(s-d), s stands for the semiperimeter 1/2(a+b+c+d). The fact that Brahmagupta's formula is…

  15. Operational Principles. The Operational Art of Erwin Rommel and Bernard Montgomery

    DTIC Science & Technology

    1985-01-01

    7 OPERATIONAL PRINCIPLES: THE OPERATIONAL ART OF ERWIN ROMMEL AND BERNARD MONTGOMERY A thesis presented to the Faculty of the US Army Command and...h- rfrC -= S Leaven,pwnrth. iz0 27. - 85-3214 141 OPERATIONAL PRINCIPLES: THE OPERATIONAL ART OF ERWIN ROMMEL AND BERNARD MONTGOMERY A thesis...Principles: The Operational Art of Erwin Rommel and Bernard Montgomery. Approved by: esis Committee ChairmanTCD lsV2onson, MA) , _ __, Member, Graduate Faculty

  16. Metal Containing Polymers as Fuel Cell Catalysts.

    DTIC Science & Technology

    1987-06-30

    AvjilLib:I:W. C, s IAvoi! ~ or Dist Spo.:11 TRLE OF CONTENTS Introduction 1 Results 3 Electrocatalyst Synthesis and Characterization 3 Rationale 3...collector may be effected by a number of mechanisms. � 3 ELECTRODECATALYST SYNTHESIS AND CHARACTERIZATION Rational e The synthetic objectives of the...orometnyl polystyrene to yield a diketone contain- ing polymer. These 1 i:ter two polymers 3re particularly interesting in t, - tney pose in alternative to

  17. Evaporation Mechanism of Sn and SnS from Liquid Fe: Part III. Effect of C on Sn Removal

    NASA Astrophysics Data System (ADS)

    Jung, Sung-Hoon; Kang, Youn-Bae; Seo, Jeong-Do; Park, Joong-Kil; Choi, Joo

    2015-02-01

    To understand the effect of C on Sn evaporation from liquid iron in the view of ferrous scrap recycling, the evaporation of Sn from various liquid Fe-C-S-Sn alloys was experimentally investigated. A series of gas-liquid reactions was carried out at 1873 K (1600 °C) using an electromagnetic levitation melting technique, where mass transfers in gas phase and liquid phase did not significantly affect the reaction rate. It was found that CS2(g) is a major gas species evaporating from Fe-C-S alloy (initial S content [pct S]0: 0.028 to 0.502 mass pct), and Fe-C-S-Sn alloy ([pct S]0: 0.063 to 0.560 mass pct), thereby competing with SnS for S in the liquid alloy. A model equation for the evaporation rate of CS2(g) was established using the experimental data for the Fe-C-S alloys. The chemical reaction rate constant for the CS2(g) evaporation () was obtained as 4.24 × 10-12 m7 mol-2 s-1, and the residual rate constant () was 4.24 × 10-16 m7 mol-2 s-1, both at 1873 K (1600 °C). Roll of C on the evaporation of Sn in Fe-C-Sn alloy was confirmed to be the increase of activity coefficient of Sn. By taking into account (1) the evaporation of Sn(g), SnS(g), and CS2(g), and (2) the increasing activity coefficient of Sn and S by C, a comprehensive model for the evaporation rate of Sn and S in the Fe-C-Sn-S alloy was developed. The calculation results by the developed model in the present study showed good agreement with the experimental results. Some applications of the current model are presented in the view of increasing the Sn removal rate.

  18. Incorporating Resilience into Dynamic Social Models

    DTIC Science & Technology

    2016-07-20

    during the 2006 Somali civil war and its aftermath. We focused on understanding the economic resilience of this community in the face of ecological ...were able to study the resilience of the system for each of these attacks, and how it disturbed the system as a whole. In socio- ecological systems...Walker, C. S. Holling, S. R. Carpenter, and A. Kinzig, “Resilience, adaptability and transformability in social– ecological systems,” Ecol. Soc., vol. 9

  19. Acute Effects of Anticholinesterase Agents on Pupillary Function

    DTIC Science & Technology

    1986-09-16

    Hed., Springfield, IL 62708 3 USA and * C.S. Biol. Flsiopat. Musc., Ist. Patologia Generale, Universita di Padova, 35100 Padova, Italy. Based on the...Fislopat. Musc., 1st. Patologia Generale, Ezio glicobini - Universita di Padova, 35100 Padova, Italy. SIU School of Medicine Based on the results of our...Second choice ....... ..4 .... ,.. nThe or nerted me od of ro e amunicaton is: Poster ................... Oral ........ b ... lolesse

  20. Role of Thermochemical Decomposition in Energetic Material Initiation Sensitivity and Explosive Performance

    DTIC Science & Technology

    2007-02-05

    adipate , where complete random atom scrambling is observed in its detonation products [CO2, CO, CH4, O2, C(s)] [28]. The same conditions applied to a...greatly accelerates the TNT induction period as does benzoic acid to a small extent [30]. During the induction period, a threshold amount of catalytic...NITROSO MELAMINE ALCOHOL ALDEHYDEANTHANIL ANTHANIL OXIME NITRILECARBOXYLIC ACID TNB Figure 4. Condensed phase product comparison

  1. Activation of SO2 by [Zn(Cp*)2] and [(Cp*)Zn(I)-Zn(I)(Cp*)].

    PubMed

    Kelly, Rory P; Kazeminejad, Neda; Lamsfus, Carlos A; Maron, Laurent; Roesky, Peter W

    2016-11-18

    Interesting reactivity was observed in reactions of SO2 with [Zn(Cp*)2] and [(Cp*)Zn(I)-Zn(I)(Cp*)]. These reactions proceeded with insertion of SO2 into the Zn-C bonds. Spectacularly, the lability of the C-S bond in the O2SCp* ligands led to the thermal decomposition of [Zn(O2SCp*)2(tmeda)] to afford [Zn2(μ-SO3)(μ-S2O4)(tmeda)2].

  2. 1997 Toxic Hazards Research Annual Report

    DTIC Science & Technology

    1998-05-01

    Goeptar et al., 1995). This enzyme cleaves the C-S bond of the TCE cysteine conjugate producing pyruvate, ammonia, and an enethiol. The action of P-lyase... measurements of microsomal data for the same donor (to determine experimental error) or from a- group of different donors (to determine an interidividual... measurement of microsomal protein content (MPL), the determination of V. in microsomes (VmaxM) and the determination of Michaelis constant for

  3. Human Performance in Continuous/Sustained Operations and the Demands of Extended Work/Rest Schedules: An Annotated Bibliography. Volume 2

    DTIC Science & Technology

    1989-06-01

    mask and the constraints that wearing this protective device continuously from 16 to 48 hours imposes on his living and working was investigated in 34...room is a useful device for further exploration of vestibular and central nervous system mechanisms. 461. Guedry, F. E., Kennedy, R. S., Harris, C. S...Transportation Branch, are exposed to a higher global risk level, but apparently find various "resources" to fight fatigue for the most dangerous

  4. Collins Center Update. Volume 16, Issue 1 & 2. October 2013-March 2014

    DTIC Science & Technology

    2014-03-01

    Combined/Joint Force Land Component Commander ( C /JFLCC) Course 2-14 • Senior Leader Staff Ride Program Concludes Another Successful Year...OF RESPONSIBLE PERSON a. REPORT unclassified b. ABSTRACT unclassified c . THIS PAGE unclassified Standard Form 298 (Rev. 8-98) Prescribed by...Council 3 C S L D Under Secretary of Defense for Policy Michele Flournoy; Mr. Jeremy Bash (Former Chief of Staff to the SECDEF); Mr. Chris

  5. Engineering and Design: Reliability Analysis of Hydropower Equipment

    DTIC Science & Technology

    2007-11-02

    Institute, Iowa State University. Revised Russell, Feather, Randolph, Langowski, Ventikos, and Pettit 1993 Russell, C. S., Feather, T. D., Randolph, M...Langowski, J. F., Ventikos, P., and Pettit , E. M. 1993. QUADRANT: Incremental Analysis Methodology for Prioritizing O & M Projects (Locks and Dams...in brief, it involves computing the amount of capacity that can be sup- ported with the available energy for each week in the peak demand months for

  6. Molecular Surface Electrostatic Potentials in the Analysis of Non- Hydrogen-Bonding Noncovalent Interactions

    DTIC Science & Technology

    1993-12-27

    preferences (e.g., Brinck , et al., 1993; Kollman, et al., 1975; Leroy, et al., 1976) as well as accepting and donating tendencies (Murray and Politzer, 1991...halogenated methanes ( Brinck , et al., 1992); (b) substituted aromatics, (c) s-tetrazine (Politzer, et al., 1992) and (d) 1,3- bisphenylurea (Murray, et al...and Liquori, A. M. (1956) Acta Cryst., 9, 510. Blackstock, S. C., Lorand, J. P. and Kochi, J. K. (1987) J. Org. Chem., 52, 1451. Brinck , T., Murray, J

  7. Structural Characterization and Determinants of Specificity of Single-Chain Antibody Inhibitors of Membrane-Type Serine Protease 1

    DTIC Science & Technology

    2008-03-01

    Previously, two papers were published on this work • Bhatt, AS, Welm, A, Farady, CJ, Vasquez , M, Wilson, K, and Craik, CS. (2007). Coordinate expression...acidic pH. J Immunol 176, 3165-72. 8. Matias-Roman, S., Galvez, B. G., Genis, L., Yanez-Mo, M., de la Rosa, G., Sanchez -Mateos, P., Sanchez -Madrid, F...Farady, C. J., Vasquez , M., Wilson, K. & Craik, C. S. (2007). Coordinate expression and functional profiling identify an extracellular proteolytic

  8. The Effect of Hyperbaric Oxygen on the Growth of Rhizopus nigricans.

    DTIC Science & Technology

    1980-12-01

    identify by block number) Impression Chamber Medical Mycology Oxygen Therapy (ompression Therapy Mucor Phycomycosis hvp)erbaric Medicine Mucormycosis ... mucormycosis caused by Rhizopus SDD , ,, ,, 147 TO 1 NOV 65 IS OBSOLETE UNCLASSIFIED SECUFITY Cl.kSSIFICATION OF THIS PAGE (When Dfra F..tery_* K...0i 1 -’ & cl . TWO ca;cS of mucormycosis have been treated At I- i , ,vbar. Mdicine Division, USAF School of Aerospace Medicine. I v:, rhaI r i .v 1

  9. Impact of the Duration of Platelet Storage in Critically Ill Trauma Patients

    DTIC Science & Technology

    2011-12-01

    redistribution, mini- mizes wastage , and allows for the accumulation of reserves to be used in times of disaster. The ability to store blood products...P.C.S.), Department of Pediatrics, St. Louis Children’s Hospital , Washington University, St. Louis, Missouri; and Department of Pathology (I.S., J.N...tightly controlled environment. The current Food and Drug Admin- istration (FDA) approved lifespan for the majority of platelets is limited to a maximum

  10. P.A.C. Planner's Workbook. E.S.E.A. Title I. Revised.

    ERIC Educational Resources Information Center

    Davis, Chuck

    This workbook provides information and guidelines for planning and operating Parent Advisory Councils (P.A.C.s) provided for under the Elementary and Secondary Education Act Title I. The first part of the workbook, which was prepared for P.A.C. planners in the Phoenix, Arizona, Union High School District, is a month-by-month guide to P.A.C.…

  11. Neurotrophin Therapy of Neurodegenerative Disorders with Mitochondrial Dysfunction

    DTIC Science & Technology

    2007-09-01

    inhibition in the Ts65Dn mouse, a genetic model of Down syndrome. J Neurosci. 24, 8153-60. Kristian T., Hopkins I.B., McKenna M.C., Fiskum G. 2006...Ann Neurol. 36, 747-51. Moore C.S. 2006. Postnatal lethality and cardiac anomalies in the Ts65Dn Down syndrome mouse model. Mamm Genome. 17, 1005-12

  12. mReactr: A Computational Theory of Deductive Reasoning

    DTIC Science & Technology

    2012-08-01

    1931-1958). Collected papers of Charles Sanders Peirce . 8 vols. Hartshorne, C., Weiss, P., & Burks, A. (Eds.) Cambridge, MA: Harvard University...the various possibilities to which the premises refer. 2) The structure of a model corresponds to the structure of what it represents (see Peirce ...inferences from quantified statements: A study of the square of opposition. Journal of Verbal Learning and Verbal Behavior, 22, 535–546. Peirce , C.S

  13. Data Fusion in Offensive and Defensive Information Operations

    DTIC Science & Technology

    2001-01-01

    More recently, mathematician and logician C.S. Peirce (1839-1914) developed a mathematical theory of signs, or semiotics8. More explicitly than...concepts of semiotics applied more generally to linguistics and human interpretation is attributed to Peirce’s contemporary, Swiss linguist Ferdinand de...thought (cognitive objects). 9 Peirce , Charles Saunders, C.P. 1-480 - The Logic of Mathematics, 1896. In a manuscript a year later, Peirce further

  14. Effects of Visual Communication Tool and Separable Status Display on Team Performance and Subjective Workload in Air Battle Management

    DTIC Science & Technology

    2008-06-01

    respect or capacity”; Peirce , 1931) as part of meaningful semiotic ‘sign systems’. According to semiotics , meaningful communication can be transmitted...agents can share relevant knowledge (Flach & Bennett, 1996; Schwartz, Flach, Nelson, & Stokes, 2007). According to semiotics , both visual and...management teams. Proceedings of the Symposium on Human Factors Issues in Network-Centric Warfare, Sydney, Australia. Peirce , C.S. (1931): Collected

  15. Combat Veterans with Comorbid PTSD and Mild TBI Exhibit a Greater Inhibitory Processing ERP from the Dorsal Anterior Cingulate Cortex

    DTIC Science & Technology

    2014-08-08

    recorded electroencephalography from 32 combat veterans with mTBI—17 of whom were also comorbid for PTSD (mTBIþPTSD) and 15 without PTSD (mTBI-only...C.F., Falkenstein, M., Herrmann, C.S., 2013. Electroencephalography of response inhibition tasks: functional net- works and cognitive contributions...particularly affected by PTSD. To further test this hypothesis, we recorded electroencephalography from 32 combat veterans with mTBI—17 of whom were

  16. Small Groups in Programmed Environments: Behavioral and Biological Interactions.

    DTIC Science & Technology

    1983-04-01

    H.H., Emurian, C.S., and Brady, J.V. Effects of a pairing contingency on behavior in a three-person programmed environment. Journal of the Experimental Analysis of Behavior , 1978...person environment. Journal of the Experimental Analysis of Behavior , 1976, 25(3), 293-302. Emurian, H.H., Brady, J.V., Ray, R.L., Meyerhoff, J.L., and

  17. Design and Performance Analysis of Adaptive Optical Telescopes Using Laser Guide Stars

    DTIC Science & Technology

    1989-01-01

    They subsequently verified their analytical expressions by predicting the brightness of an experimental guide star produced at Mauna Kea Observatory .4...of 1987 at the University of Hawaii’s Mauna Kea Observatory . The laser spots were generated by the University of Illinois monostatic lidar system and...at mauna kea observatory for adaptive imaging in astronomy," Nature, vol. 328, pp. 229-231, 1987. 5. C. S. Gardner, B. M. Welsh, and L. A. Thompson

  18. Develop, Apply and Evaluate Wavelet Technology.

    DTIC Science & Technology

    1992-10-20

    Eddington (1928), A. S . The Nature of the Physical World, Cambridge: Cambridge University Press. [11] Einstein , A. (155), The Meaning of Relativity...Albequerque, NM, 1990. [9] R. A. Gopinath and C. S . Burrus, "Wavelet transforms and filter banks," pp. 603-654 in Wavelets: A Tutorial in Theory and...Resnikoff, "Multidimensional wavelet bases," Aware Technical Report, Aware, Inc., Cambridge, MA 1991. [25] S . G. Mallat, "A Theory for multiresolution

  19. Relationship of Neurocognitive Function to Breast Cancer Treatment and Induced Menopause

    DTIC Science & Technology

    2006-05-01

    3), 303-10] Evidence- Based Nursing, 2(1), 26. Laufer, A. (1990). Breastfeeding : Toward resolution of the unsatisfying birth experience. Journal...Midwifery, 32(1), 41-47. Laufer, A. (1986). [Review of the book Breastfeeding success for working mothers]. Journal of Nurse- Midwifery, 31(6), 299...C.S., Meek, P., McNamara, A.M., & Watson, L. (1997). Perspectives unifying symptom interpretation. Image : Journal of Nursing Scholarship, 29, 175–181

  20. Perception of Complex Auditory Patterns.

    DTIC Science & Technology

    1987-11-02

    AD-M196 218 PERCEPTION OF COMLEX AUDITORY PRTTERNS(U) INDIANA UNIV 1/11 AT BLOOMINGTON HEARING AND COMUNUICATION LAS C S MATSON 02 NOV 8? RFOSR-TR-87... Computer Assisted Detection Using basic concepts of statistical decision theory a Contigent Criterion Model has been developed to predict optimal... computer terminals, where they are given one-key control over the presence or absence of each of : e the components of a tonal pattern (generally 10