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Sample records for dick henry jb

  1. What I Learned From Henry Dick: Highlights and What's Left for Us?

    NASA Astrophysics Data System (ADS)

    Kelemen, P.

    2006-12-01

    (1) Slow spreading ridges have lots of peridotite outcrops, especially at segment ends. This dove-tailed with seismic and gravity observations, and geodynamic modeling, to yield a community consensus on 3D crustal accretion. However there are an increasingly large number of abysmal peridotite outcrops known at segment centers, so what is happening to the simple 3D picture? (2) There are global systematics in abysmal peridotite compositions, and in corresponding MORB, that define apparent melting trends. However (a) Why do the peridotite trends slope the wrong way on phase diagrams? (b) How come local variability in some fracture zones is almost as large as global variability? (c) What are the pyroxene proportions when corrected to magmatic temperature? (d) To what extent are the modal data affected by density changes during hydrous alteration? (e) To what extent are pyroxene and olivine contents affected by reactive dissolution and/or "impregnation"? (f) What does it mean when highly depleted peridotites are sampled from very cold parts of the ridge system? (3) Fractional melting is likely. Well, OK, near fractional. However (a) How many of those clinopyroxenes analyzed by Johnson et al (JGR 90) and Johnson & Dick (JGR 92) are igneous? Particularly the most depleted ones must be metamorphic. Given the diffusion data, what do the trace element concentrations really tell us? (b) What about the whole rock data? (4) The average composition of oceanic gabbros from ODP Hole 735B = average MORB, for trace as well as major elements. How does this work? Average MORB results from ~ 50% crystal fractionation. Where are the corresponding cumulates to balance lavas & 735B style gabbro sections? (5) Re-circulating, depleted peridotites can melt over and over again, provided they are reheated to `ambient' potential temperature during their residence in the convecting mantle. (6) There are important feedbacks between localized melt transport and localized deformation, in the mantle and probably in the oceanic lower crust. (7) A lot of abysmal peridotites from 14-16 N on the MAR lack subsolidus deformation, despite having made a journey through the lithosphere to the seafloor. (8) Oblique spreading segments probably have slower mantle upwelling rates than orthogonal segments in the same region. (9) There are large offset, low angle normal faults that expose peridotite and gabbro at slow spreading ridges. (10) Inside corner highs are commonly underlain by peridotite. (penultimate) I did not LEARN much about dunites from Henry. However, we AGREED from an early date that dunites are very interesting conduits for olivine-saturated melt passing through pyroxene-bearing wall rocks, that formed at least in part by pyroxene dissolution during porous flow, and that could be important for understanding disequilibrium between MORB and shallow mantle peridotite. (last and least) Some horizontal dunites MAY form by vertical migration of melt across pre-existing, horizontal pyroxene layers. At this point in the talk, I will eat my hat.

  2. JB6 Mouse Model

    Cancer.gov

    JB6 References 1982 Colburn NH, Dion LD, & Wendel EJ. The role of mitogenic stimulation and specific glycoprotein changes in the mechanism of late-stage promotion in JB-6 epidermal cell lines. In Hecker E, Fusening NE, Kunz W, Marks F, & Thielmann HW (Eds

  3. JB6 Mouse Model

    Cancer.gov

    JB6 References 1997 Amstad PA, Liu H, Ichimiya M, Chang S, Berezesky IK, & Trump BF. Bcl-2 enhancement of malignant transformation in mouse epidermal JB6 cells. Mol Carcinog 20: 231-239, 1997.  Abstract  Amstad PA, Liu H, Ichimiya M, Berezesky IK, & Trump

  4. JB6 Mouse Model

    Cancer.gov

    JB6 References 1985 Colburn NH, Lerman MI, Hegamyer GA, & Gindhart TD. A transforming activity not detectable by DNA transfection to NIH 3T3 cells is detected by JB6 mouse epidermal cells. Mol Cell Biol 5: 890-893, 1985.  Abstract   Full Text    Colburn N

  5. JB6 Mouse Model

    Cancer.gov

    JB6 References 1981 Colburn NH & Gindhart T. Specific binding of transforming growth factor correlates with promotion of anchorage independence in EGF receptorless JB6 cells. Biochem Biophys Res Commun 102: 799-807, 1981.  Abstract  Colburn NH, Wendel E,

  6. JB6 Mouse Model

    Cancer.gov

    JB6 References 1983 Bondy GP & Denhardt DT. Exposure of JB6 mouse epidermal cells to 12-0-tetradecanoyl- phorbol-13-acetate is not accompanied by a significant change in total DNA-cytosine methylation. Carcinogenesis 4: 1599-1603, 1983.  Abstract  Colburn

  7. JB6 Mouse Model

    Cancer.gov

    JB6 Mouse Model The mouse Balb/C JB6 model (1) is the only well characterized model of genetic variants for a neoplastic transformation response to tumor promoters. These cells are not differentially sensitive to tumor promoter induced mitogenesis or diff

  8. JB6 Mouse Model

    Cancer.gov

    JB6 References 2000 Berdyshev EV, Schmid PC, Dong Z, & Schmid HH. Stress-induced generation of N- acylethanolamines in mouse epidermal JB6 P+ cells. Biochem J 346 Pt 2: 369-74, 2000.  Abstract  Full Text    Borowski P, Resch K, Schmitz H, & Heiland M. A s

  9. JB6 Mouse Model

    Cancer.gov

    JB6 References 2004 Lin MH, Wang CJ, Huang HP, Chou MY, & Chou FP. The tumorigenic haracteristics of lime-piper betel quid-transformed JB6 cells. Arch Toxicol. 78(3): 167-73, 2004.  Abstract  Hou DX, Kai K, Li JJ, Lin S, Terahara N, Wakamatsu M, Fujii M,

  10. JB6 Mouse Model

    Cancer.gov

    JB6 References 1984 Srinivas L & Colburn NH. Preferential oxidation of cell surface sialic acid by periodate leads to promotion of transformation in JB6 cells. Carcinogenesis 5: 515-519, 1984.  Abstract  Srinivas L & Colburn NH. Reduced trisialogangliosid

  11. JB6 Mouse Model

    Cancer.gov

    JB6 References 1993 Chang PL & Prince CW: 1 alpha,25-Dihydroxyvitamin D3 enhances 12-O- tetradecanoylphorbol-13- acetate- induced tumorigenic transformation and osteopontin expression in mouse JB6 epidermal cells. Cancer Res 53: 2217-2220, 1993.  Abstract

  12. JB6 Mouse Model

    Cancer.gov

    JB6 References 1989 Bernstein LR & Colburn NH. AP-1/jun function is differentially induced in promotion sensitive and resistant JB6 cells. Science 244: 566-569, 1989.  Abstract  Cerutti P, Larsson R, Krupitza G, Muehlematter D, Crawford D, & Amstad P. Pat

  13. JB6 Mouse Model

    Cancer.gov

    JB6 References 1995 Chang PL, Yang WC, Prince CW. Effects of okadaic acid on calcitriol- and phorbol ester-induced expression and phosphorylation of osteopontin in mouse JB6 epidermal cells. Ann NY Acad Sci 760: 24-34, 1995.  Pub Med link    Dong Z, Lavro

  14. JB6 Mouse Model

    Cancer.gov

    JB6 References 1992 Amstad PA, Krupitza G, Cerutti PA. Mechanism of c-fos induction by active oxygen. Cancer Res 52: 3952-3960, 1992.  Abstract  Ben-Ari ET, Bernstein LR, & Colburn NH. Differential c-jun expression in response to tumor promoters in JB6 ce

  15. Moby Dick.

    ERIC Educational Resources Information Center

    Stern, Milton R.

    1986-01-01

    Discusses examples in "Moby Dick" of Melvillean words symptomatic of the significance of Ishmael's rhetorical energy, in order to suggest that Ishmael's language reflects Melville's search for lexical and rhetorical forms that express the democratic impulse. (SRT)

  16. JB6 Mouse Model

    Cancer.gov

    JB6 References 2007 Nomura M, Yamazaki R, Takaya M, Kikuchi M, Takahashi-Nishioka T, Akiyama K, Akiyama N, Moritani S, & Kobayashi S. Inhibition of tetrandrine on epidermal growth factor-induced cell transformation and its signal transduction. Anticancer

  17. JB6 Mouse Model

    Cancer.gov

    JB6 References 2009 Hwang MK, Song NR, Kang NJ, Lee KW, & Lee HJ. Activation of phosphatidylinositol 3-kinase is required for tumor necrosis factor-alpha-induced upregulation of matrix metalloproteinase-9. Its direct inhibition by quercetin. Int J Biochem

  18. JB6 Mouse Model

    Cancer.gov

    JB6 References 1994 Amstad P, Moret R, & Cerutti P. Glutathione peroxidase compensates for the hypersensitivity of Cu,Zn- superoxide dismutase overproducers to oxidant stress. J Biol Chem 269: 1606-1609, 1994.  Abstract  Banbura M, Ackland-Berglund C, Lee

  19. JB6 Mouse Model

    Cancer.gov

    JB6 References 1990 Amstad P & Cerutti P. Genetic modulation of the cellular antioxidant defense capacity. Environ Health Perspect 88: 77-82, 1990.  Abstract  Full Text  DeBenedetti F, Colburn NH, Oppeneheim JJ, & Faltynek CR. Tumor necrosis factor induce

  20. JB6 Mouse Model

    Cancer.gov

    JB6 References 1986 Greenfield AR, Taffet SM, Haddox MK. Immunocytochemical localization of ornithine decarboxylase in cultured murine cells. Cell Tissue Res 243: 33-40, 1986.  Abstract  Hosoi J, Abe E, Suda T, Colburn NH, & Kuroki T. Induction of anchora

  1. JB6 Mouse Model

    Cancer.gov

    JB6 References 2003 Wei SJ, Trempus CS, Cannon RE, Bortner CD, & Tennant RW. Identification of Dss1 as a TPA-responsive gene expressed in keratinocyte progenitor cells, with possible involvement in early skin tumorigenesis. J Biol Chem 278(3): 1758-68, 20

  2. JB6 Mouse Model

    Cancer.gov

    JB6 References 1991 Amstad P, Peskin A, Shah G, Mirault ME, Moret R, Zbinden I, & Cerutti P. The balance between Cu,Zn-superoxide dismutase and catalase affects the sensitivity of mouse epidermal cells to oxidative stress. Biochemistry 30: 9305-9313, 1991

  3. JB6 Mouse Model

    Cancer.gov

    JB6 References 2008 Zheng D, Cho YY, Lau AT, Zhang J, Ma WY, Bode AM, & Dong Z. Cyclin-dependent kinase 3-mediated activating transcription factor 1 phosphorylation enhances cell transformation. Cancer Res 68(18): 7650-60, 2008. Abstract Full Text Lee KW,

  4. JB6 Mouse Model

    Cancer.gov

    JB6 References 1980 Colburn NH. Tumor promotion and preneoplastic progression. In Slaga TJ (Ed). Carcinogenesis; Modifiers of Carcinogenesis, Vol 5 NY, Raven Press, 1980, pp 33-56.  Colburn NH, Koehler B, & Nelson KA. A cell culture assay for tumor promot

  5. JB6 Mouse Model

    Cancer.gov

    JB6 References 1979 Colburn NH, Former BF, Nelson KA, & Yuspa SH. Tumor promoter induces anchorage independence irreversibly. Nature 281: 589-591, 1979.  Abstract  Colburn NH. The use of tumor promoter responsive epidermal cell lines to study preneoplasti

  6. JB6 Mouse Model

    Cancer.gov

    JB6 References 2002 Young MR, Nair R, Bucheimer N, Tulsian P, Hsu T-C, & Colburn NH. Transactivation of Fra-1 and consequent activation of AP-1 occur Erk dependently. Mole Cell Biol 22: 587-598, 2002.  Abstract  Full Text    Liu G, Zhang Y, Bode AM, Ma WY

  7. JB6 Mouse Model

    Cancer.gov

    JB6 References 1988 Cerutti P, Krupitza G, Larsson R, Muehlematter D, Crawford D, Amstad P. Physiological and pathologic effects of oxidants in mouse epidermal cells. Ann NY Acad Sci 551: 75-82, 1988.  Abstract  Cerutti P. Commentary Response modification

  8. JB6 Mouse Model

    Cancer.gov

    JB6 References 2005 Wang L, Bowman L, Lu Y, Rojanasakul Y, Mercer RR, Castranova V, & Ding M. Essential role of p53 in silica-induced apoptosis. Am J Physiol Lung Cell Mol Physiol 288(3). L488-96, 2005.  Abstract  Zykova TA, Zhang Y, Zhu F, Bode AM, & Don

  9. JB6 Mouse Model

    Cancer.gov

    Keene AM, Allaway RJ, Sadrieh N, Tyner KM.  Gold nanoparticle trafficking of typically excluded compounds across the cell membrane in JB6 Cl 41-5a cells causes assay interference.  Nanotoxicology, 2010.  Abstract    Son YO, Hitron JA, Cheng S, Budhraja A,

  10. JB6 Mouse Model

    Cancer.gov

    JB6 References 1978 Colburn NH, Vorder Bruegge WF, Bates JR, Gray RH, Rossen JD, Kelsey WH, & Shimada T. Correlation of anchorage independent growth with tumorigenicity of chemically transformed mouse epidermal cells. Cancer Res 38: 624-634, 1978.  Abstra

  11. JB6 Mouse Model

    Cancer.gov

    JB6 References 1996 Bian J, Wang Y, Smith MR, Kim H, Jacobs C, Jackman J, Kung HF, Colburn NH, & Sun Y. Suppression of in vivo tumor growth and induction of suspension cell death by tissue inhibitor of metallo-proteinases (TIMP)-3. Carcinogenesis 17: 1805

  12. JB6 Mouse Model

    Cancer.gov

    JB6 References 1998 Cmarik JL, Li Y, Ogram SA, Reeves R & Colburn NH. Tumor promoter induces high mobility group HMG-Y protein expression in transformation-sensitive but not resistant cells. Oncogene 16: 3387-3396, 1998.  Abstract  Dong Z, Huang C, Ma WY,

  13. JB6 Mouse Model

    Cancer.gov

    JB6 References 2001 Berdyshev EV, Schmid PC, Krebsbach RJ, Hillard CJ, Huang C, Chen N, Dong Z, Schmid HH. Cannabinoid-receptor-independent cell signaling by N-acylethanolamines. Biochem J 360: 67-75, 2001.  Abstract  Full Text    Chung JY, Park JO, Phyu

  14. JB6 Mouse Model

    Cancer.gov

    Kim JE, Son JE, Jang YJ, Lee DE, Kang NJ, Jung SK, Heo YS, Lee KW, Lee HJ.  Luteolin, a novel natural inhibitor of TPL2 kinase, inhibits tumor necrosis factor-alpha-induced cyclooxygenase-2 expression in JB6 mouse epidermis cells.  Pharmacol Exp Ther. [Ep

  15. JB6 Mouse Model

    Cancer.gov

    JB6 References 2006 Feng G, Ohmori Y, & Chang PL. Production of chemokine CXCL1/KC by okadaic acid through the nuclear factor-kappaB pathway. Carcinogenesis 27(1): 43-52, 2006.  Abstract Ding M, Huang C, Lu Y, Bowman L, Castranova V, & Vallyathan V. Invol

  16. JB6 Mouse Model

    Cancer.gov

    JB6 References 1987 Colburn NH. The genetics of tumor promotion. In Barrett JC (Ed). Mechanisms of Environmental Carcinogenesis, Vol 1, Boca Raton, CRC Press, Inc, 1987, pp 81-95. Colburn NH, Farber E, Weinstein IB, Diamond L, & Slaga TJ. Meeting Report.

  17. JB6 Mouse Model

    Cancer.gov

    JB6 References 1999 Bae GU, Seo DW, Kwon HK, Lee HY, Hong S, Lee ZW, Ha KS, Lee HW, Han JW. Hydrogen peroxide activates p70(S6k) signaling pathway. J Biol Chem 274: 32596- 32602, 1999.  Abstract  Bernstein LR & Walker SE. Tumor promotion resistant cells a

  18. Patrick Henry.

    ERIC Educational Resources Information Center

    Scanlon, Thomas M.

    Patrick Henry dominated the politics of Virginia and was a powerful voice in the affairs of the early United States. He became a lawyer at age 23 and rose to prominence following his victory in "The Parsons Case." Soon after, he was elected to the House of Burgesses where he challenged the control of the wealthy, established members and shocked…

  19. Richard Henry Dana (1927-2015).

    PubMed

    Allen, James

    2016-01-01

    Richard Henry Dana was born on June 14, 1927, in Bronxville, New York. Dick was accepted to Princeton University in 1944 on a scholarship and graduated in 1949. He then became a student leader in the Congress of Racial Equality and participated in a series of nonviolent sit-in protests. He completed studies for his doctoral degree at the University of Illinois in clinical psychology (1953). He briefly held a series of clinical and university positions until finally settling down at the University of Arkansas (1969- 1988). It was during his long tenure in Arkansas that Dick authored one of the foundational textbooks in clinical psychology. His groundbreaking work, Multicultural Assessment Perspectives for Professional Psychology (1993), provided the first comprehensive book on the topic. Over a remarkable 10-year period, he produced a flurry of scholarly and professional activity. He passed away peacefully at his home in Portland, Oregon, on August 17, 2015. (PsycINFO Database Record PMID:26866992

  20. Remembering Dick Crane

    NASA Astrophysics Data System (ADS)

    Jossem, E. Leonard

    2007-09-01

    Physicist, polymath, educator, leader, Horace Richard Crane died on April 19, 2007, a few months short of his 100th birthday. Those of us who were fortunate enough to have had him as a friend mourn his loss, but for all of us he leaves a rich and varied legacy of published works that invite reading and rereading. Dick's work as a physicist was recognized in 1966 by his election to the National Academy of Sciences and in 1986 by the award of the President's National Medal of Science: "For the first measurement of the magnetic moment and spin of free electrons and positrons."

  1. Henry's Law: A Retrospective

    ERIC Educational Resources Information Center

    Rosenberg, Robert M.; Peticolas, Warner L.

    2004-01-01

    A retrospective view of Henry's law and its applicability in any specific system at a finite concentration is tested. It can be concluded that Henry's law is only a limiting law and is adequate at low mole fractions but is useful for practical purposes where high precision is not required.

  2. Lovelock-Brans-Dicke gravity

    NASA Astrophysics Data System (ADS)

    Wenjie Tian, David; Booth, Ivan

    2016-02-01

    According to Lovelock’s theorem, the Hilbert-Einstein and the Lovelock actions are indistinguishable from their field equations. However, they have different scalar-tensor counterparts, which correspond to the Brans-Dicke and the Lovelock-Brans-Dicke (LBD) gravities, respectively. In this paper the LBD model of alternative gravity with the Lagrangian density {{L}}{LBD}=\\frac{1}{16π }≤ft[φ ≤ft(R+\\frac{a}{\\sqrt{-g}}{}*{RR}+b{ G }\\right)-\\frac{{ω }{{L}}}{φ }{{{\

  3. Moby-Dick. [Lesson Plan].

    ERIC Educational Resources Information Center

    Soderquist, Alisa

    Based on Herman Melville's novel "Moby-Dick," this lesson plan presents activities designed to help students understand that the novel is grounded in facts that Melville acquired in his own experiences at sea; New England was the center of a prospering whaling industry in the 19th century; and journal keeping was not uncommon among 19th-century…

  4. Henry Ford Health Systems

    Cancer.gov

    Henry Ford Health Systems evolved from a hospital into a system delivering care to 2.5 million patients and includes the Cancer Epidemiology, Prevention and Control Program, which focuses on epidemiologic and public health aspects of cancer.

  5. Henry Hudson Monument, seen from Frances Schervier Apartments, with Henry ...

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

    Henry Hudson Monument, seen from Frances Schervier Apartments, with Henry Hudson Bridge, Inwood Hill Park, Manhattan skyline, George Washington Bridge, Hudson River, and Palisades Interstate Park in background, looking south. - Henry Hudson Parkway, Extending 11.2 miles from West 72nd Street to Bronx-Westchester border, New York, New York County, NY

  6. Henry's Law and Noisy Knuckles.

    ERIC Educational Resources Information Center

    Kimbrough, Doris R.

    1999-01-01

    Discusses Henry's Law which describes the relationship between the pressure of gas and the concentration of that gas in a solution. Presents an application of Henry's Law to the cracking of knuckles. (CCM)

  7. Comment on 'New Brans-Dicke wormholes'

    SciTech Connect

    Bhadra, Arunava; Simaciu, Ion; Nandi, Kamal Kanti; Zhang Yuanzhong

    2005-06-15

    It is shown that the recently claimed two new Brans-Dicke wormhole solutions [F. He and S-W. Kim, Phys. Rev. D 65, 084022 (2002)] are not really new solutions. They are just the well known Brans-Dicke solutions of Class I and II in a different conformal gauge.

  8. Quantum Criticality in the Biased Dicke Model.

    PubMed

    Zhu, Hanjie; Zhang, Guofeng; Fan, Heng

    2016-01-01

    The biased Dicke model describes a system of biased two-level atoms coupled to a bosonic field, and is expected to produce new phenomena that are not present in the original Dicke model. In this paper, we study the critical properties of the biased Dicke model in the classical oscillator limits. For the finite-biased case in this limit, We present analytical results demonstrating that the excitation energy does not vanish for arbitrary coupling. This indicates that the second order phase transition is avoided in the biased Dicke model, which contrasts to the original Dicke model. We also analyze the squeezing and the entanglement in the ground state, and find that a finite bias will strongly modify their behaviors in the vicinity of the critical coupling point. PMID:26786239

  9. Quantum Criticality in the Biased Dicke Model

    PubMed Central

    Zhu, Hanjie; Zhang, Guofeng; Fan, Heng

    2016-01-01

    The biased Dicke model describes a system of biased two-level atoms coupled to a bosonic field, and is expected to produce new phenomena that are not present in the original Dicke model. In this paper, we study the critical properties of the biased Dicke model in the classical oscillator limits. For the finite-biased case in this limit, We present analytical results demonstrating that the excitation energy does not vanish for arbitrary coupling. This indicates that the second order phase transition is avoided in the biased Dicke model, which contrasts to the original Dicke model. We also analyze the squeezing and the entanglement in the ground state, and find that a finite bias will strongly modify their behaviors in the vicinity of the critical coupling point. PMID:26786239

  10. The Henry Problem Revisited

    NASA Astrophysics Data System (ADS)

    Karasaki, K.; Oldenburg, C. M.; Maekawa, K.

    2006-12-01

    We have modeled laboratory experiments of saltwater intrusion in a configuration resembling the so-called Henry Problem using TOUGH2/EOS7. The experiment differs from the Henry Problem in that the freshwater boundary condition is that of Dirichlet, a difference that is not expected to affect the overall results very much. The simulation matched the saltwater wedge profile of the experiment, the main feature of which was the sharp interface (lack of dispersion) between the freshwater and saltwater. Prior solutions of the Henry Problem show a wide transition zone between freshwater and saltwater arising from the use of a large dispersion coefficient. Henry attributed the large dispersion to the effect of tidally induced motion. In our simulation, we imposed a time-varying sinusoidal boundary condition to see if a larger transition zone can be created without using a larger dispersion coefficient. However, for the parameters used we were not able to do so. It is still plausible that the wide transition zone observed at Biscayne Bay (and as modeled in the Henry Problem) is caused by a particular formation heterogeneity and transient effects. Our analysis, based on a laboratory experiment and accompanying modeling, suggests that dispersion is quite limited. Nonetheless, we question the validity of the use of a large dispersion coefficient where the groundwater velocity is very low, or where the flow is in the opposite direction of the concentration gradient. This work was supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231

  11. Brans-Dicke cylindrical wormholes

    SciTech Connect

    Eiroa, Ernesto F.; Simeone, Claudio

    2010-10-15

    Static axisymmetric thin-shell wormholes are constructed within the framework of the Brans-Dicke scalar-tensor theory of gravity. Examples of wormholes associated with vacuum and electromagnetic fields are studied. All constructions must be threaded by exotic matter, except in the case of geometries with a singularity of finite radius, associated with an electric field, which can have a throat supported by ordinary matter. These results are achieved with any of the two definitions of the flare-out condition considered.

  12. Generation of heralded Dicke state

    NASA Astrophysics Data System (ADS)

    Lee, Chern Hui; Arnold, Kyle; Baden, Markus; Barrett, Murray

    2015-05-01

    We study experimentally the efficient creation of heralded Dicke states in an atomic ensemble trapped in a high finesse optical cavity. Weak resonant light in free-space mode transverse to the cavity is efficiently absorbed by the optically dense sample. Subsequent stimulated Raman scattering into the cavity mode dominates over free space scattering because of the high single atom cooperativity of the cavity. This result paves the way towards a high efficiency heralded quantum memory which will be practically useful for storing the polarization state of a single photon.

  13. Cosmic acceleration and Brans-Dicke theory

    SciTech Connect

    Sharif, M. Waheed, S.

    2012-10-15

    We study the accelerated expansion of the universe by exploring the Brans-Dicke parameter in different eras. For this, we take the FRW universe model with a viscous fluid (without potential) and the Bianchi type-I universe model with a barotropic fluid (with and without a potential). We evaluate the deceleration parameter and the Brans-Dicke parameter to explore cosmic acceleration. It is concluded that accelerated expansion of the universe can also be achieved for higher values of the Brans-Dicke parameter in some cases.

  14. Generalized Brans-Dicke theories

    SciTech Connect

    De Felice, Antonio; Tsujikawa, Shinji E-mail: shinji@rs.kagu.tus.ac.jp

    2010-07-01

    In Brans-Dicke theory a non-linear self interaction of a scalar field φ allows a possibility of realizing the late-time cosmic acceleration, while recovering the General Relativistic behavior at early cosmological epochs. We extend this to more general modified gravitational theories in which a de Sitter solution for dark energy exists without using a field potential. We derive a condition for the stability of the de Sitter point and study the background cosmological dynamics of such theories. We also restrict the allowed region of model parameters from the demand for the avoidance of ghosts and instabilities. A peculiar evolution of the field propagation speed allows us to distinguish those theories from the ΛCDM model.

  15. JB-300: An advanced medium size transport for 2005

    NASA Technical Reports Server (NTRS)

    Debrouwer, Giles; Graham, Katherine; Ison, Jim; Juarez, Vince; Moskalik, Steve; Pankonin, Jon; Weinstein, Arnold

    1993-01-01

    In the fall of 1992, the TAC Team was presented with a Request for Proposal (PFP) for a mid-size (250-350 passenger) commercial transport. The aircraft was to be extremely competitive in the areas of passenger comfort, performance, and economic aspects. Through the use of supercritical airfoils, a technologically advanced Very High By-pass Ratio (VHBR) turbofan engine, a low overall drag configuration, a comparable interior layout, and mild use of composites, the JB-300 offers an economically viable choice to the airlines. The cents per passenger mile of the JB-300 is 1.76, which is considerably lower than current aircraft in the same range. Overall, the JB-300 is a technologically advanced aircraft, which will meet the demands of the 21st century.

  16. Genetic Characterization of Bacillus anthracis 17 JB strain

    PubMed Central

    Seyed-Mohamadi, Sakineh; Moradi Bidhendi, Soheila; Tadayon, Keyvan; Ghaderi, Rainak

    2015-01-01

    Background and Objectives: Bacillus anthracis is one of the most homogenous bacteria ever described. Some level of diversity. Bacillus anthracis 17JB is a laboratory strain It is broadly used as a challenge strain in guinea pigs for potency test of anthrax vaccine. Material and Methods: This work describes genetic characterization of B. anthracis 17 JB strain using the SNPs and MLVA genotyping. Results and Conclusion: In SNPs typing, the originally French 17JB strain represented the A.Br. 008/009 subgroup. In Levy's genotyping method, 843, 451 and 864 bp long fragments were identified at AA03, AJ03 and AA07 loci, respectively. In the vaccine manufacturer perspective these findings are much valuable on their own account, but similar research is required to extend molecular knowledge of B. anthracis epidemiology in Persia. PMID:26668705

  17. Rim of Henry Crater

    NASA Technical Reports Server (NTRS)

    2002-01-01

    (Released 02 April 2002) This portion of the rim of Henry Crater has numerous dark streaks located on the slopes of the inner crater wall. These dark slope streaks have been suggested to have formed when the relatively bright dust that mantles the slopes slides downhill, either exposing a dust-free darker surface or creating a darker surface by increasing its roughness. The topography in this region appears muted, indicating the presence of regional dust mantling. The materials on floor of the crater (middle to lower left) are layered, with differing degrees of hardness and resistance to erosion producing cliffs (resistant layers) and ledges (easily eroded layers). These layered materials may have been originally deposited in water, although deposition by other means, such as windblown dust and sand, is also possible. Henry Crater, named after a 19th Century French astronomer, is 170 km in diameter and is located at 10.9o N, 336.7o W (23.3o E) in a region called Arabia Terra.

  18. Henry Gray, plagiarist.

    PubMed

    Richardson, Ruth

    2016-03-01

    The first edition of Anatomy Descriptive and Surgical (1858) was greeted with accolades, but also provoked serious controversy concerning Henry Gray's failure to acknowledge the work of earlier anatomists. A review in the Medical Times (1859) accused Gray of intellectual theft. The journal took the unusual step of substantiating its indictment by publishing twenty parallel texts from Gray and from a pre-existing textbook, Quain's Anatomy. At the recent "Vesalius Continuum" conference in Zakynthos, Greece (2014) Professor Brion Benninger disputed the theft by announcing from the floor the results of a computer analysis of both texts, which he reported exonerated Gray by revealing no evidence of plagiarism. The analysis has not been forthcoming, however, despite requests. Here the historian of Gray's Anatomy supplements the argument set out in the Medical Times 150 years ago with data suggesting unwelcome personality traits in Henry Gray, and demonstrating the utility of others' work to his professional advancement. Fair dealing in the world of anatomy and indeed the genuineness of the lustre of medical fame are important matters, but whether quantitative evidence has anything to add to the discussion concerning Gray's probity can be assessed only if Benninger makes public his computer analysis. Clin. Anat. 29:135-139, 2016. © 2015 Wiley Periodicals, Inc. PMID:26696521

  19. Henry's Law and Noisy Knuckles

    NASA Astrophysics Data System (ADS)

    Kimbrough, Doris R.

    1999-11-01

    Henry's law describes the relationship between the pressure of a gas and the concentration of that gas in solution. Presented here is the application of Henry's law to the noise associated with "cracking" knuckles. Gases dissolved in the synovial fluid in joints rapidly come out of solution as the joint is stretched and pressure is decreased. This "cavitation" produces a characteristic noise.

  20. Joseph Henry and Astronomy

    NASA Astrophysics Data System (ADS)

    Rothenberg, Marc

    2016-01-01

    Joseph Henry (1797-1878) is best known for his work in electromagnetism and as the first secretary of the Smithsonian Institution. But he was also a pioneer solar physicist, an early advocate of US participation in astrophysics, and a facilitator of international cooperation in astronomy. This paper will briefly trace his role in the development of the US astronomical community from the time he taught astronomy at Princeton in the 1830s through his death, focusing on failed efforts to persuade US astronomers and patrons of astronomy that the best path for US astronomy should be astrophysics. He thought that the US could make a more significant contribution to astronomy science by striking out on a less travelled path rather than competing with the established European observatories.

  1. 75 FR 23718 - Orders Finding That the Henry Financial Basis Contract, Henry Financial Index Contract and Henry...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-04

    ...On October 20, 2009, the Commodity Futures Trading Commission (``CFTC'' or ``Commission'') published for comment in the Federal Register \\1\\ a notice of its intent to undertake a determination whether the Henry Financial Basis (``HEN'') contract, Henry Financial Index (``HIS'') contract and Henry Financial Swing (``HHD'') contract traded on the IntercontinentalExchange, Inc. (``ICE''), an......

  2. Selective control of the symmetric Dicke subspace in trapped ions

    SciTech Connect

    Lopez, C. E.; Retamal, J. C.; Solano, E.

    2007-09-15

    We propose a method of manipulating selectively the symmetric Dicke subspace in the internal degrees of freedom of N trapped ions. We show that the direct access to ionic-motional subspaces, based on a suitable tuning of motion-dependent ac Stark shifts, induces a two-level dynamics involving previously selected ionic Dicke states. In this manner, it is possible to produce, sequentially and unitarily, ionic Dicke states with increasing excitation number. Moreover, we propose a probabilistic technique to produce directly any ionic Dicke state assuming suitable initial conditions.

  3. The Right Fit for Henry

    ERIC Educational Resources Information Center

    Gould, J. Christine; Staff, Linda K.; Theiss, Heather M.

    2012-01-01

    When Henry was enrolled in a gifted program in 3rd grade, he showed many of the classic signs of giftedness, but his reading and writing skills were below grade level. An evaluation revealed that he was twice-exceptional--he was gifted and he had a learning disability. Believing that both his giftedness and his learning disability warranted

  4. Draper, Henry (1837-82)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    American pioneer of astronomical photography, born in Prince Edward County, VA. Made the first photograph of a stellar spectrum (Vega). His assistant WILLIAMINA FLEMING analysed the objective prism photographs of stellar spectra and formed the basis for the classification of stars, with the data eventually published by ANNIE CANNON as the Henry Draper Catalog of Stellar Spectra....

  5. Josh Billings (Henry Wheeler Shaw).

    ERIC Educational Resources Information Center

    Kesterson, David B.

    Designed for use by the general reader, the college student, and the teacher, this book analyzes the life and literary career of Josh Billings (Henry Wheeler Shaw), emphasizing his literary ventures and artistic talents. The analysis reveals Billings' talents as a subtle humorist, homespun philosopher, and artist of the essay. Chapters include

  6. [The Henry E. Huntington Library.

    ERIC Educational Resources Information Center

    Abraham, Terry

    The biographical sketch of Henry E. Huntington includes a description of the establishment of the Huntington Library and the purpose and scope of its collection. Although this is a free and public library, its use is restricted to qualified scholars having legitimate research needs. Photographic techniques were developed at the Huntington Library…

  7. The Right Fit for Henry

    ERIC Educational Resources Information Center

    Gould, J. Christine; Staff, Linda K.; Theiss, Heather M.

    2012-01-01

    When Henry was enrolled in a gifted program in 3rd grade, he showed many of the classic signs of giftedness, but his reading and writing skills were below grade level. An evaluation revealed that he was twice-exceptional--he was gifted and he had a learning disability. Believing that both his giftedness and his learning disability warranted…

  8. Joseph Henry and the Telegraph

    NASA Astrophysics Data System (ADS)

    Hochfelder, David

    1997-04-01

    Morse's telegraph rested upon three scientific advances which occured between 1800 and 1830: the development of battery technology, the formulation of laws governing the behavior of electrical components in circuits, and the discovery of electromagnetic phenomena. Joseph Henry was crucial to the development of the early telegraph. His work on electromagnetism made it possible for the electric current to manifest itself as useful mechanical work. Henry developed electromagnets of sufficient lifting power, but which drew relatively small currents; these magnets were the heart of Morse's telegraph receiver. Morse also used electromagnets as relays, which allowed him to transmit signals over great distances. Morse often acknowledged his debt to Henry, and the two enjoyed a cordial working relationship until the mid-1840s. But during the bitter and protracted litigation over Morse's patent, Henry testified (unwillingly, he claimed) against the inventor. This began a lifelong quarrel between the two men, the specifics of which were tedious and petty. In general terms, however, their conflict arose over different notions regarding scientific discovery and technological innovation.

  9. A Conversation with Henry Pollak.

    ERIC Educational Resources Information Center

    Albers, Donald J.; Thibodeaux, Michael J.

    1984-01-01

    Presents an interview with Henry Pollak. Areas considered include how and why he chose mathematics, his international activities, teaching in industry, model building in schools, applied mathematics, experiences with the School Mathematics Study Group (SMSG), and failure of the SMSG at the elementary level, and others. (JN)

  10. Brane cosmic string compactification in Brans-Dicke theory

    SciTech Connect

    Abdalla, M. C. B.; Hoff da Silva, J. M.; Guimaraes, M. E. X.

    2007-04-15

    We investigate an alternative compactification of extra dimensions using local cosmic string in the Brans-Dicke gravity framework. In the context of dynamical systems it is possible to show that there exist a stable field configuration for the Einstein-Brans-Dicke equations. We explore the analogies between this particular model and the Randall-Sundrum scenario.

  11. Brans-Dicke scalar field as a chameleon

    SciTech Connect

    Das, Sudipta; Banerjee, Narayan

    2008-08-15

    In this paper it is shown that in Brans-Dicke theory, if one considers a nonminimal coupling between the matter and the scalar field, it can give rise to a late time accelerated expansion for the Universe preceded by a decelerated expansion for very high values of the Brans-Dicke parameter {omega}.

  12. What We Talk around when We Talk about "The Dick"

    ERIC Educational Resources Information Center

    Savage, Elizabeth

    2011-01-01

    Some years ago, the author had her first opportunity to teach an undergraduate American Romanticism course, which meant she had a chance to teach "Moby-Dick" the way she thought it should be taught. Meeting two days a week, her course was set up so that students read about thirty pages of "Moby-Dick" for one class meeting a week paired with…

  13. What We Talk around when We Talk about "The Dick"

    ERIC Educational Resources Information Center

    Savage, Elizabeth

    2011-01-01

    Some years ago, the author had her first opportunity to teach an undergraduate American Romanticism course, which meant she had a chance to teach "Moby-Dick" the way she thought it should be taught. Meeting two days a week, her course was set up so that students read about thirty pages of "Moby-Dick" for one class meeting a week paired with

  14. Electrically tunable Dicke effect in a double-ring resonator

    SciTech Connect

    Cetin, A. E.; Muestecaplioglu, Oe. E.

    2010-04-15

    We study the finite-element method analysis of the Dicke effect using numerical simulations in an all-optical system of an optical waveguide side-coupled to two interacting ring resonators in a liquid crystal environment. The system is shown to exhibit all the signatures of the Dicke effect under active and reversible control by an applied voltage.

  15. Henry Morgenthau's voice in history.

    PubMed

    Steiner, Pamela

    2015-01-01

    Henry Morgenthau (1856-1946) distinguished himself as the U.S. Ambassador to the Ottoman Empire, 1913-1916, and as the chairman of the League of Nations Refugee Settlement Commission (RSC) for Greece, 1923-24. I describe aspects of his early life that shaped the man he became, his accomplishments in these two posts, and his feelings about himself over time. At the end I briefly describe his attitude toward a possible Jewish state in Palestine. PMID:25630196

  16. Generalized Dicke nonequilibrium dynamics in trapped ions.

    PubMed

    Genway, Sam; Li, Weibin; Ates, Cenap; Lanyon, Benjamin P; Lesanovsky, Igor

    2014-01-17

    We explore trapped ions as a setting to investigate nonequilibrium phases in a generalized Dicke model of dissipative spins coupled to phonon modes. We find a rich dynamical phase diagram including superradiantlike regimes, dynamical phase coexistence, and phonon-lasing behavior. A particular advantage of trapped ions is that these phases and transitions among them can be probed in situ through fluorescence. We demonstrate that the main physical insights are captured by a minimal model and consider an experimental realization with Ca+ ions trapped in a linear Paul trap with a dressing scheme to create effective two-level systems with a tunable dissipation rate. PMID:24484012

  17. JB-9322, a new selective histamine H2-receptor antagonist with potent gastric mucosal protective properties.

    PubMed Central

    Palacios, B.; Montero, M. J.; Sevilla, M. A.; Román, L. S.

    1995-01-01

    1. JB-9322 is a selective histamine H2-receptor antagonist with gastric antisecretory activity and mucosal protective properties. 2. The affinity of JB-9322 for the guinea-pig atria histamine H2-receptor was approximately 2 times greater than that of ranitidine. 3. In vivo, the ID50 value for the inhibition of gastric acid secretion in pylorus-ligated rats was 5.28 mg kg-1 intraperitoneally. JB-9322 also dose-dependently inhibited gastric juice volume and pepsin secretion. In gastric lumen-perfused rats, intravenous injection of JB-9322 dose-dependently reduced histamine-, pentagastrin- and carbachol-stimulated gastric acid secretion. 4. JB-9322 showed antiulcer activity against aspirin and indomethacin-induced gastric lesions and was more potent than ranitidine. 5. JB-9322 effectively inhibited macroscopic gastric haemorrhagic lesions induced by ethanol. Intraperitoneal injection was effective in preventing the lesions as well as oral treatment. The oral ID50 value for these lesions was 1.33 mg kg-1. By contrast, ranitidine (50 mg kg-1) failed to reduce these lesions. In addition, the protective effect of JB-9322 was independent of prostaglandin synthesis. 6. These results indicate that JB-9322 is a new antiulcer drug that exerts a potent cytoprotective effect in addition to its gastric antisecretory activity. PMID:7647984

  18. Henry's law constants of polyols

    NASA Astrophysics Data System (ADS)

    Compernolle, S.; Mller, J.-F.

    2014-05-01

    Henry's law constants (HLC) are derived for several polyols bearing between 2 and 6 hydroxyl groups, based on literature data for water activity, vapour pressure and/or solubility. Depending on the case, infinite dilution activity coefficients (IDACs), solid state pressures or activity coefficient ratios are obtained as intermediary results. For most compounds, these are the first values reported, while others compare favourably with literature data in most cases. Using these values and those from a previous work (Compernolle and Mller, 2014), an assessment is made on the partitioning of polyols, diacids and hydroxy acids to droplet and aqueous aerosol.

  19. False vacuum decay in Jordan-Brans-Dicke cosmologies

    NASA Technical Reports Server (NTRS)

    Holman, Richard; Kolb, Edward W.; Vadas, Sharon L.; Wang, Yun; Weinberg, Erick J.

    1989-01-01

    The bubble nucleation rate in a first-order phase transition taking place in a background Jordan-Brans-Dicke cosmology is examined. The leading order terms in the nucleation rate when the Jordan-Brans-Dicke field is large (i.e., late times) are computed by means of a Weyl rescaling of the fields in the theory. It is found that despite the fact that the Jordan-Brans-Dicke field (hence the effective gravitational constant) has a time dependence in the false vacuum at late times the nucleation rate is time independent.

  20. Dicke model for quantum Hall systems

    NASA Astrophysics Data System (ADS)

    Hama, Y.; Fauzi, M. H.; Nemoto, K.; Hirayama, Y.; Ezawa, Z. F.

    2016-02-01

    In GaAs quantum Hall (QH) systems, electrons are coupled with nuclear spins through the hyperfine interaction, which is normally not strong enough to change the dynamics of electrons and nuclear spins. The dynamics of the QH systems, however, may drastically change when the nuclear spins interact with low-energy collective excitation modes of the electron spins. We theoretically investigate the nuclear-electron spin interaction in the QH systems as hybrid quantum systems driven by the hyperfine interaction. In particular, we study the interaction between the nuclear spins and the Nambu–Goldstone (NG) mode with the linear dispersion relation associated with the U(1) spin rotational symmetry breaking. We show that such an interaction is described as nuclear spins collectively coupled to the NG mode, and can be effectively described by the Dicke model. Based on the model we suggest that various collective spin phenomena realized in quantum optical systems can also emerge in the QH systems.

  1. The Don Henry Story. Teaching with Documents.

    ERIC Educational Resources Information Center

    National Archives and Records Administration, Washington, DC.

    Don Henry was a student at the University of Kansas (Lawrence, Kansas) who experienced a profound political change during his years on campus. Henry became a leader in radical campus organizations, volunteered to fight in the Spanish Civil War with the Lincoln Brigade, and died on the battlefield in Aragon (Spain) in September 1937. An article in

  2. The Don Henry Story. Teaching with Documents.

    ERIC Educational Resources Information Center

    National Archives and Records Administration, Washington, DC.

    Don Henry was a student at the University of Kansas (Lawrence, Kansas) who experienced a profound political change during his years on campus. Henry became a leader in radical campus organizations, volunteered to fight in the Spanish Civil War with the Lincoln Brigade, and died on the battlefield in Aragon (Spain) in September 1937. An article in…

  3. John Henry--The Steel Driving Man

    ERIC Educational Resources Information Center

    Murphy, David E.; Gulley, Laura L.

    2005-01-01

    The story of John Henry provided the setting for sixth-grade class to participate in a John Henry Day of mathematics experiments. The students collected data from experiments where students competed against machines and technology. The student analyzed the data by comparing two box plots, a box plot of human data, and a box plot of machine or

  4. John Henry--The Steel Driving Man

    ERIC Educational Resources Information Center

    Murphy, David E.; Gulley, Laura L.

    2005-01-01

    The story of John Henry provided the setting for sixth-grade class to participate in a John Henry Day of mathematics experiments. The students collected data from experiments where students competed against machines and technology. The student analyzed the data by comparing two box plots, a box plot of human data, and a box plot of machine or…

  5. Relaxing nucleosynthesis constraints on Brans-Dicke theories

    SciTech Connect

    De Felice, Antonio; Mangano, Gianpiero; Serpico, Pasquale D.; Trodden, Mark

    2006-11-15

    We reconsider constraints on Brans-Dicke theories arising from the requirement of successful big bang nucleosynthesis. Such constraints typically arise by imposing that the universe be radiation-dominated at early times, and therefore restricting the contribution that a Brans-Dicke scalar could make to the energy budget of the universe. However, in this paper we show how the dynamics of the Brans-Dicke scalar itself can mimic a radiation-dominated kinematics, thereby allowing successful nucleosynthesis with a sizable contribution to the total cosmic energy density. In other words Newton's constant may dynamically acquire values quite different from that today, even though the evolution mimics radiation domination. This possibility significantly relaxes the existing bounds on Brans-Dicke fields, and opens the door to new possibilities for early universe cosmology. The necessary fine tunings required by such an arrangement are identified and discussed.

  6. Henry (Hank) J. Moore (1928-1998)

    NASA Astrophysics Data System (ADS)

    Thompson, Thomas W.

    Henry (Hank) J. Moore, a member of the AGU Planetary Sciences section, died of a heart attack on September 21, 1998. He was in Utah while on a family trip to visit his daughter. His 70th birthday occurred just 3 weeks before his death. Henry, who was born in Albuquerque, New Mexico, took great pride in having found and visited the small town of Albuquerque in the Extremadura region of Spain, noting the geologic similarities between that part of Spain and his birthplace in America.Henry, known for his contributions to the Apollo,Viking, Magellan, and Mars Pathfinder missions, attributed his career to a chance encounter with Gene Shoemaker in 1960. Henry was completing his Ph.D. work in geology at Stanford University and Gene obviously had spotted Henry's keen analytical mind. I suspect this pivotal meeting was far from a chance encounter.

  7. 4. Photocopy of watercolor by J.B. Taylor, September 3, 1840 ...

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

    4. Photocopy of watercolor by J.B. Taylor, September 3, 1840 (original in the Chester County Historical Society, West Chester Pennsylvania) WEST FRONT, 1840 - Bank of Chester County, 17 North High Street, West Chester, Chester County, PA

  8. Henry's law constants of polyols

    NASA Astrophysics Data System (ADS)

    Compernolle, S.; Mller, J.-F.

    2014-12-01

    Henry's law constants (HLC) are derived for several polyols bearing between 2 and 6 hydroxyl groups, based on literature data for water activity, vapour pressure and/or solubility. While deriving HLC and depending on the case, also infinite dilution activity coefficients (IDACs), solid state vapour pressures or activity coefficient ratios are obtained as intermediate results. An error analysis on the intermediate quantities and the obtained HLC is included. For most compounds, these are the first values reported, while others compare favourably with literature data in most cases. Using these values and those from a previous work (Compernolle and Mller, 2014), an assessment is made on the partitioning of polyols, diacids and hydroxy acids to droplet and aqueous aerosol.

  9. Cosmological constraint on Brans-Dicke Model

    NASA Astrophysics Data System (ADS)

    Li, Ji-Xia; Wu, Feng-Quan; Li, Yi-Chao; Gong, Yan; Chen, Xue-Lei

    2015-12-01

    We combine new Cosmic Microwave Background (CMB) data from Planck with Baryon Acoustic Oscillation (BAO) data to constrain the Brans-Dicke (BD) theory, in which the gravitational constant G evolves with time. Observations of type Ia supernovae (SNeIa) provide another important set of cosmological data, as they may be regarded as standard candles after some empirical corrections. However, in theories that include modified gravity like the BD theory, there is some risk and complication when using the SNIa data because their luminosity may depend on G. In this paper, we assume a power law relation between the SNIa luminosity and G, but treat the power index as a free parameter. We then test whether the difference in distances measured with SNIa data and BAO data can be reduced in such a model. We also constrain the BD theory and cosmological parameters by making a global fit with the CMB, BAO and SNIa data set. For the CMB+BAO+SNIa data set, we find 0.08 × 10-2 < ζ < 0.33 × 10-2 at the 68% confidence level (CL) and -0.01 × 10-2 < ζ < 0.43 × 10-2 at the 95% CL, where ζ is related to the BD parameter ω by ζ = ln(1 + 1/ω).

  10. Obituary: Henry Emil Kandrup, 1955-2003

    NASA Astrophysics Data System (ADS)

    Merritt, David; Gottesman, Stephen T.

    2004-12-01

    Henry Emil Kandrup died on 18 October 2003 at his home in Gainesville Florida. Henry was a theoretical astrophysicist specializing in the application of chaotic dynamics to stellar systems. At the time of his death, Henry was a Professor at the University of Florida where he had taught for 13 years. Henry was born in Manhasset, New York on July 24, 1955 and spent most of his childhood in Great Neck. His parents, Jytte and Fred, were immigrants from Denmark where his father had worked as a silver smith. Henry was a precocious child, skipping both third and fifth grades. With the help of Sidney Spivack, a professor of sociology at Columbia University, his parents enrolled Henry in the Brooks Preparatory School in Andover, Massachusetts. After graduating at age 16, Henry enrolled at Cornell, transferring to Princeton the following year. Henry's parents adored their only child and worked hard to provide him with intellectual opportunities. Henry became an accomplished musician (organ, piano, French horn) and linguist (English, Danish, German) and was a passionate devotee of opera and ballet. Henry received his PhD in 1980 from the University of Chicago, where his thesis advisor was James Ipser. He taught at Oakland University in Michigan and Syracuse University in New York before coming to the University of Florida in 1990. Henry was sui generis. He shunned conventionality in his personal appearance and in his public demeanor, and always chose forthrightness and candor over polite silence. But to those of us who knew Henry well, his bluntness was a reflection of his intellectual consistency. Henry always said exactly what he thought, both in his published work and his public presentations, and never compromised himself for the sake of appearances. Nothing that he said or wrote was less than fully thought out. Henry's PhD thesis was entitled "Stochastic Problems in Stellar Dynamics," and most of his subsequent research was in this field. Motion in stellar systems can be stochastic for three reasons: deflection of trajectories by close encounters; non-integrability of the smoothed-out potential; and an oscillating mean field. Henry made important contributions to our understanding of all three sorts of chaos. In a series of papers from the early 1990's, Henry developed the idea of ``chaotic phase mixing," the process by which an ensemble of points evolves toward a uniform coarse-grained population of phase space. Prior to Henry's work, the evolution of stellar systems to a steady state was attributed loosely to "violent relaxation," defined as phase-space repopulation driven by changes in the smooth potential. Henry pointed out that changes in the gravitational potential do not by themselves constitute relaxation; at best, they can contribute to relaxation by inducing a degree of chaos in the stellar trajectories. But it is the chaos that is responsible for the mixing and hence for the approach to a steady state. Among his other important contributions to stellar dynamics were a formal demonstration of the equivalence of Landau damping and phase mixing, and a proof (with J. F. Sygnet) of the linear stability of a broad class of stellar systems. Shortly before his death, Henry was working on the chaotic dynamics of charged particle beams and on the influence of binary super massive black holes on orbital motion in galaxies. Henry was one of the principle organizers of more than a dozen workshops on non-linear dynamics in astronomy and astrophysics that were held at the University of Florida. At the time of his death, he was negotiating with Springer Verlag over publication of a monograph, Hamiltonian Galactic Dynamics. Henry was famous for the energetic quality of his lectures. Like many other excellent teachers, he drew upon his research to enliven his undergraduate teaching. Under Research Interests, his web site lists "creative utilization of playdough, margaritas, and spirographs in graduate and undergraduate teaching." Henry received numerous teaching citations and awards; he was consistently voted the best teacher in the department by his University of Florida students, and his Introductory Astronomy courses at Syracuse were cited as "Recommended Courses" in Lisa Birnbach's New and Improved College Book for 1990. Henry was also well known for his dedication to students and postdocs. He was an exceptionally patient and gentle advisor, never openly critical, and often gave more credit to his students than was strictly necessary. He also took a deep personal interest in his students' welfare; as he told one of them, "an advisor should spend half of his time as the student's analyst." Henry was a model scientist in many ways. It is hard to imagine stellar dynamics without him.

  11. Thomas Henry Huxley and neuroscience.

    PubMed

    Smith, C U

    1999-01-01

    In the latter decades of the nineteenth century Thomas Henry Huxley was at the heart of British Science: President of the British Association for the Advancement of Science (1870), President of the Royal Society (1883-86), Chairman of innumerable committees. His thought in many ways characterises the spirit of the 'high' Victorian age in Britain. He was not only the most eminent academic biologist of his time but also deeply interested in philosophical issues. His re-examination of the evolution of the brain in response to Richard Owen's 'telenomic' views formed the kernel of the notorious debate at the 1860 meeting of the British Association in Oxford. From his early youth until old age he thought long and hard about the mind/body problem. This paper follows the development of his ideas and shows how in debate with many of the leading thinkers of his age, in the X-club and the Metaphysical Society, he struggled to develop a biologically-based account of the relationship between mind and brain. However, at the end, he seems to have recognized that his position was not entirely satisfactory and ultimately famously confessing himself 'agnostic' turned from metaphysics to devote himself to more practical issues. The unresolved problems of mind and brain which perplexed Huxley remain to torment his epigoni. PMID:11640239

  12. Dynamical phase transition in the open Dicke model.

    PubMed

    Klinder, Jens; Keler, Hans; Wolke, Matthias; Mathey, Ludwig; Hemmerich, Andreas

    2015-03-17

    The Dicke model with a weak dissipation channel is realized by coupling a Bose-Einstein condensate to an optical cavity with ultranarrow bandwidth. We explore the dynamical critical properties of the Hepp-Lieb-Dicke phase transition by performing quenches across the phase boundary. We observe hysteresis in the transition between a homogeneous phase and a self-organized collective phase with an enclosed loop area showing power-law scaling with respect to the quench time, which suggests an interpretation within a general framework introduced by Kibble and Zurek. The observed hysteretic dynamics is well reproduced by numerically solving the mean-field equation derived from a generalized Dicke Hamiltonian. Our work promotes the understanding of nonequilibrium physics in open many-body systems with infinite range interactions. PMID:25733892

  13. General class of vacuum Brans-Dicke wormholes

    SciTech Connect

    Lobo, Francisco S. N.; Oliveira, Miguel A.

    2010-03-15

    Recently, traversable wormhole geometries were constructed in the context of f(R) gravity. The latter is equivalent to a Brans-Dicke theory with a coupling parameter {omega}=0, which is apparently excluded from the narrow interval, -3/2<{omega}<-4/3, extensively considered in the literature of static wormhole solutions in vacuum Brans-Dicke theory. However, this latter interval is only valid for a specific choice of an integration constant of the field equations derived on the basis of a post-Newtonian weak field approximation, and there is no reason for it to hold in the presence of compact objects with strong gravitational fields. In this context, we construct a general class of vacuum Brans-Dicke wormholes that include the value of {omega}=0.

  14. Dynamical phase transition in the open Dicke model

    PubMed Central

    Klinder, Jens; Keler, Hans; Wolke, Matthias; Mathey, Ludwig; Hemmerich, Andreas

    2015-01-01

    The Dicke model with a weak dissipation channel is realized by coupling a BoseEinstein condensate to an optical cavity with ultranarrow bandwidth. We explore the dynamical critical properties of the HeppLiebDicke phase transition by performing quenches across the phase boundary. We observe hysteresis in the transition between a homogeneous phase and a self-organized collective phase with an enclosed loop area showing power-law scaling with respect to the quench time, which suggests an interpretation within a general framework introduced by Kibble and Zurek. The observed hysteretic dynamics is well reproduced by numerically solving the mean-field equation derived from a generalized Dicke Hamiltonian. Our work promotes the understanding of nonequilibrium physics in open many-body systems with infinite range interactions. PMID:25733892

  15. Inflation and dark energy from the Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Artymowski, Michał; Lalak, Zygmunt; Lewicki, Marek

    2015-06-01

    We consider the Brans-Dicke theory motivated by the f(R) = R + α Rn - β R2-n model to obtain a stable minimum of the Einstein frame scalar potential of the Brans-Dicke field. As a result we have obtained an inflationary scalar potential with non-zero value of residual vacuum energy, which may be a source of dark energy. In addition we discuss the probability of quantum tunnelling from the minimum of the potential. Our results can be easily consistent with PLANCK or BICEP2 data for appropriate choices of the value of n and ω.

  16. Counterdiabatic driving in spin squeezing and Dicke-state preparation

    NASA Astrophysics Data System (ADS)

    Opatrný, Tomáš; Saberi, Hamed; Brion, Etienne; Mølmer, Klaus

    2016-02-01

    A method is presented to transfer a system of two-level atoms from a spin coherent state to a maximally spin squeezed Dicke state, relevant for quantum metrology and quantum information processing. The initial state is the ground state of an initial linear Hamiltonian that is gradually turned into a final quadratic Hamiltonian whose ground state is the selected Dicke state. We use compensating operators to suppress diabatic transitions to unwanted states that would occur if the change were not slow. We discuss the possibilities of constructing the compensating operators by sequential application of quadratic Hamiltonians available in experiments.

  17. Inflation and dark energy from the Brans-Dicke theory

    SciTech Connect

    Artymowski, Michał; Lalak, Zygmunt; Lewicki, Marek

    2015-06-17

    We consider the Brans-Dicke theory motivated by the f(R)=R+αR{sup n}−βR{sup 2−n} model to obtain a stable minimum of the Einstein frame scalar potential of the Brans-Dicke field. As a result we have obtained an inflationary scalar potential with non-zero value of residual vacuum energy, which may be a source of dark energy. In addition we discuss the probability of quantum tunnelling from the minimum of the potential. Our results can be easily consistent with PLANCK or BICEP2 data for appropriate choices of the value of n and ω.

  18. Joseph Henry's Conception of Scientific Knowledge

    NASA Astrophysics Data System (ADS)

    Theerman, Paul

    1997-04-01

    Joseph Henry, America's premier physicist and physics teacher in the mid-nineteenth century, had decided views of scientific knowledge. These were expressed in two ways. First of all, scientific knowledge led to moral betterment. Thus the study of science was a morally good thing. This was not only because it led to the contemplation of God's creation, which was a standard reason justifying the study of science dating from the Scientific Revolution and even earlier. More importantly, the study of science itself was a moral discipline, imparting to scientists the habits and virtues of truthfulness, respect for others, care and diligence, and the discernment of meaningful patterns from experience. The moral ideals of science were expressed most strongly in Henry's upholding the international "Republic of Science"; conversely, cheapening science was a sign of moral failure. Second, for Henry and his generation, science provided a path to sure truth, separate from falsehood of both the politics and the quackery that characterized mid-century public life. Henry promoted this in his championing of the Smithsonian Institution a scientific establishment, against the ideas of others who wanted to make it a literary establishment or a training school for teachers. For Henry, the Smithsonian's scientific reputation would be established by relying on careful peer review in its publications, and supporting established scientists to write authoritative popular works. The purpose of both these activities was to raise the profile of science in the United States and further establish science and the scientific method as a guide to public life.

  19. TEACHING "MOBY DICK," A METHOD AND AN APPROACH.

    ERIC Educational Resources Information Center

    JOSEPHS, LOIS

    "MOBY DICK" IS SINGULARLY APPROPRIATE FOR HIGH SCHOOL STUDENTS IN ITS PHILOSOPHICAL, PSYCHOLOGICAL, AND SOCIAL EMPHASIS. HOWEVER, TO GUIDE THE STUDENTS INTO THE THEMATIC INTRICACIES OF THE WORK, THE TEACHER MUST USE A CAREFULLY PLANNED, INDUCTIVE APPROACH THAT DEMANDS CLOSE TEXTUAL STUDY IN CLASS. ALTHOUGH EACH TEACHER SHOULD CONCENTRATE ON THE…

  20. Religion as a Quest for Wholeness: Melville's Moby-Dick

    ERIC Educational Resources Information Center

    Vaught, Carl G.

    1974-01-01

    Author attempted to indicate the ways in which Melville's novel, Moby-Dick, may be understood as a concrete embodiment of the religious quest, and as a set of clues about ways in which the language of a quest may finally be transcended. (Author/RK)

  1. Using Herman Melville's "Moby-Dick" to Explore Geographic Themes

    ERIC Educational Resources Information Center

    Gesler, Wil

    2004-01-01

    The classic American novel, Herman Melville's "Moby-Dick", can be used in geography and English classes at the high school and college levels to explore five themes that have a geographic component or are of interest to geography students: (1) the journey, (2) human/environment interactions, (3) social relationships in space, (4) acquiring…

  2. The Truth of the Thing: Nonfiction in "Moby Dick"

    ERIC Educational Resources Information Center

    Hilbert, Betsy

    1986-01-01

    Looks at Melville's narrative construction of "onion-like...layers of truth" that combine romance and textbook, presents critics' discussion and scholars' treatment of the cetological information present in the text, offers an explanation for the lack of recognition due to the nonfictional parts of "Moby Dick." (JK)

  3. Author! Author! The Gallant Children's Author: Dick King-Smith

    ERIC Educational Resources Information Center

    Brodie, Carolyn S.

    2005-01-01

    This column presents a brief biography of Dick King-Smith. Born on March 27, 1922 and raised in Gloucestershire, England, he grew up with animals of all kinds. King-Smith was a farmer for twenty years and then became a school teacher. He was also a soldier during wartime, a traveling salesman, shoe factory worker, and television presenter. He

  4. Author! Author! The Gallant Children's Author: Dick King-Smith

    ERIC Educational Resources Information Center

    Brodie, Carolyn S.

    2005-01-01

    This column presents a brief biography of Dick King-Smith. Born on March 27, 1922 and raised in Gloucestershire, England, he grew up with animals of all kinds. King-Smith was a farmer for twenty years and then became a school teacher. He was also a soldier during wartime, a traveling salesman, shoe factory worker, and television presenter. He…

  5. History into Drama: The Perspective of "1 Henry IV."

    ERIC Educational Resources Information Center

    Champion, Larry S.

    1978-01-01

    Contrasts Shakespeare's "Henry V" and "Henry IV" series, in which human interaction becomes history, with plays such as "Julius Caesar," which focus on psychological analysis and the internalized protagonist. (MB)

  6. Tablet PCs in Engineering Mathematics Courses at the J.B. Speed School of Engineering

    ERIC Educational Resources Information Center

    Hieb, Jeffrey L.; Ralston, Patricia A. S.

    2010-01-01

    In fall 2007, J.B. Speed School of Engineering at the University of Louisville joined the ranks of universities requiring the purchase of Tablet PCs for all new entering students. This article presents a description of how the Department of Engineering Fundamentals incorporated Tablet PCs into their instruction, a review of the literature…

  7. Biosorption of cationic basic dye and cadmium by the novel biosorbent Bacillus catenulatus JB-022 strain.

    PubMed

    Kim, Su Young; Jin, Mi Ra; Chung, Chang Ho; Yun, Yeoung-Sang; Jahng, Kwang Yeop; Yu, Kang-Yeol

    2015-04-01

    Biosorption of heavy metals and dyes is a promising technology that involves the removal of toxic metals from industrial wastes. The present study aims to screen the bacterial strains isolated from soils and polluted pond for their potential biosorption of both cationic dye and cadmium. Bacillus catenulatus JB-022 strain removed 58% and 66% of cationic basic blue 3 (BB3) and cadmium (Cd(II)) at the respective concentrations of 2000 mg/L and 150 mg/L. The biosorption equilibrium data were well fitted by the Langmuir adsorption isotherm, and the kinetic studies indicated that the biosorption followed the pseudo-second-order model. The biosorption kinetics showed that the equilibrium was reached within 10 min and 5 min for BB3 and Cd(II), respectively. According to the Langmuir model, the maximum uptakes of BB3 and Cd(II) by the JB-022 biomass were estimated to be 139.74 and 64.28 mg/g, respectively. To confirm the surface morphology and functional groups, field emission scanning electron microscope, energy-dispersive X-ray spectrometer, X-ray diffraction, and Fourier transform infrared spectroscopy analyses were carried out, and the results revealed that the biomass of JB-022 has carboxyl and phosphonate groups as potential surface functional groups capable of binding to cationic pollutants. In conclusion, B. catenulatus JB-022 is proposed as an excellent biosorbent with potentially important applications in removal of cationic pollutants from wastewaters. PMID:25454694

  8. Tablet PCs in Engineering Mathematics Courses at the J.B. Speed School of Engineering

    ERIC Educational Resources Information Center

    Hieb, Jeffrey L.; Ralston, Patricia A. S.

    2010-01-01

    In fall 2007, J.B. Speed School of Engineering at the University of Louisville joined the ranks of universities requiring the purchase of Tablet PCs for all new entering students. This article presents a description of how the Department of Engineering Fundamentals incorporated Tablet PCs into their instruction, a review of the literature

  9. Draft genome sequences of Streptococcus bovis strains ATCC 33317 and JB1

    Technology Transfer Automated Retrieval System (TEKTRAN)

    We report the draft genome sequences of Streptococcus bovis type strain ATTC 33317 (CVM42251) isolated from cow dung and strain JB1 (CVM42252) isolated from a cow rumen in 1977. Strains were subjected to Next Generation sequencing and the genome sizes are approximately 2 MB and 2.2 MB, respectively....

  10. Possible Pasts: Historiography and Legitimation in "Henry VIII."

    ERIC Educational Resources Information Center

    Kamps, Ivo

    1996-01-01

    Aims to rehabilitate the reputation of Shakespeare's "Henry VIII" and emphasizes its potential usefulness in the classroom by reconsidering it in the context of Renaissance history writing. Shows how "Henry VIII" can be taught as a commentary on or seen as a continuation of incipient themes in "The Tempest" and "Henry V." (TB)

  11. Lou Henry Hoover and the Girl Scouts: A Tribute.

    ERIC Educational Resources Information Center

    McMullin, Dare Stark

    This booklet is a special tribute to Lou Henry Hoover, wife of President Herbert Hoover, from a close friend, social secretary, and chief research assistant to the First Lady. The small booklet provides a look at the social history of the era by focusing on Lou Henry Hoover and her interest in the outdoors. Lou Henry Hoover was the first women to…

  12. Livres d'Artiste: Henri Matisse, Jazz.

    ERIC Educational Resources Information Center

    Godlewski, Susan Glover

    1990-01-01

    Outlines the life of Henri Matisse and how he created his paper cut-outs, which were reproduced in a book. Discusses the importance of artists' books. Suggests some creative activities for all grades in book making and paper cut-outs that could be worked in conjunction with a language arts program. (KM)

  13. Antoine-Henri Jomini: A Bibliographical Survey.

    ERIC Educational Resources Information Center

    Alger, John I.

    Although the writings of Antoine-Henri Jomini influenced military thought during the 19th and 20th centuries, the obscurity of their publishing history has led to misunderstandings of the development and substance of Jomini's thought. This review attempts to (1) point out the continuity of his thought on the conduct of war, and (2) provide an…

  14. The Ideas of Henry Jenkins and Libraries

    ERIC Educational Resources Information Center

    Anderson, Byron

    2008-01-01

    Henry Jenkins, director of the Comparative Media Studies Program at the Massachusetts Institute of Technology and keynote speaker at the 2007 American Library Association's "Gaming, Learning and Libraries Symposium" in Chicago is a visionary leader in the areas of new media and media convergence. In a white paper on digital media and learning…

  15. In the Style of Henry Moore

    ERIC Educational Resources Information Center

    Hinshaw, Craig

    2010-01-01

    In this article, the author describes an art project inspired by Henry Moore's sculptures. This project consists of two activities. In the first activity, students select, sand and stain a wood block that would become a base for their plaster sculpture. This activity would keep the students independently engaged (classroom management) while the

  16. Henri Matisse's "Beasts of the Sea"

    ERIC Educational Resources Information Center

    Graff, Robert

    2010-01-01

    Henri Matisse (1869-1954) was a very prolific Impressionist/Post-Impressionist artist whose longevity allowed him to produce many wonderful, brightly colored pieces of art that spanned different styles, movements and media. Elementary-school children love color and appreciate any project that does not require their work to be exact or totally…

  17. In the Style of Henry Moore

    ERIC Educational Resources Information Center

    Hinshaw, Craig

    2010-01-01

    In this article, the author describes an art project inspired by Henry Moore's sculptures. This project consists of two activities. In the first activity, students select, sand and stain a wood block that would become a base for their plaster sculpture. This activity would keep the students independently engaged (classroom management) while the…

  18. Appreciating Gantos' Jack Henry as an Archetype.

    ERIC Educational Resources Information Center

    Watson, Jinx Stapleton

    2001-01-01

    Examines the contemporary realism of the literary character Jack Henry, a middle school child, as representative of two classic literary elements, the quest cycle and the lone hero. Concludes that classic structures of plots and characteristics of hero offer many modern protagonists a shape for their realistic and ordinary adventures. (SG/47)

  19. Quantum nonreciprocity of nanoscale antenna arrays in timed Dicke states.

    PubMed

    Slepyan, Gregory Y; Boag, Amir

    2013-07-12

    We predict a linear nonreciprocal effect that is based on the timed Dicke states in an ensemble of dipole-dipole coupled oscillators. This effect is examined on a nanoscale antenna array comprising two-level identical emitters. The studied nonreciprocity, which has no analogs in classical antennas, manifests itself in strong characteristic asymmetry of the radiation pattern, even for a single-photon laser pumping. Promising applications of our results for remotely tunable nanoantennas and nanocircuit elements are discussed. PMID:23889399

  20. Digital quantum Rabi and Dicke models in superconducting circuits.

    PubMed

    Mezzacapo, A; Las Heras, U; Pedernales, J S; DiCarlo, L; Solano, E; Lamata, L

    2014-01-01

    We propose the analog-digital quantum simulation of the quantum Rabi and Dicke models using circuit quantum electrodynamics (QED). We find that all physical regimes, in particular those which are impossible to realize in typical cavity QED setups, can be simulated via unitary decomposition into digital steps. Furthermore, we show the emergence of the Dirac equation dynamics from the quantum Rabi model when the mode frequency vanishes. Finally, we analyze the feasibility of this proposal under realistic superconducting circuit scenarios. PMID:25500735

  1. Digital Quantum Rabi and Dicke Models in Superconducting Circuits

    NASA Astrophysics Data System (ADS)

    Mezzacapo, A.; Las Heras, U.; Pedernales, J. S.; Dicarlo, L.; Solano, E.; Lamata, L.

    2014-12-01

    We propose the analog-digital quantum simulation of the quantum Rabi and Dicke models using circuit quantum electrodynamics (QED). We find that all physical regimes, in particular those which are impossible to realize in typical cavity QED setups, can be simulated via unitary decomposition into digital steps. Furthermore, we show the emergence of the Dirac equation dynamics from the quantum Rabi model when the mode frequency vanishes. Finally, we analyze the feasibility of this proposal under realistic superconducting circuit scenarios.

  2. Contaminant Monitoring Strategy for Henrys Lake, Idaho

    SciTech Connect

    John S. Irving; R. P. Breckenridge

    1992-12-01

    Henrys Lake, located in southeastern Idaho, is a large, shallow lake (6,600 acres, {approx} 17.1 feet maximum depth) located at 6,472 feet elevation in Fremont Co., Idaho at the headwaters of the Henrys Fork of the Snake River. The upper watershed is comprised of high mountains of the Targhee National Forest and the lakeshore is surrounded by extensive flats and wetlands, which are mostly privately owned. The lake has been dammed since 1922, and the upper 12 feet of the lake waters are allocated for downriver use. Henrys Lake is a naturally productive lake supporting a nationally recognized ''Blue Ribbon'' trout fishery. There is concern that increasing housing development and cattle grazing may accelerate eutrophication and result in winter and early spring fish kills. There has not been a recent thorough assessment of lake water quality. However, the Department of Environmental Quality (DEQ) is currently conducting a study of water quality on Henrys Lake and tributary streams. Septic systems and lawn runoff from housing developments on the north, west, and southwest shores could potentially contribute to the nutrient enrichment of the lake. Many houses are on steep hillsides where runoff from lawns, driveways, etc. drain into wetland flats along the lake or directly into the lake. In addition, seepage from septic systems (drainfields) drain directly into the wetlands enter groundwater areas that seep into the lake. Cattle grazing along the lake margin, riparian areas, and uplands is likely accelerating erosion and nutrient enrichment. Also, cattle grazing along riparian areas likely adds to nutrient enrichment of the lake through subsurface flow and direct runoff. Stream bank and lakeshore erosion may also accelerate eutrophication by increasing the sedimentation of the lake. Approximately nine streams feed the lake (see map), but flows are often severely reduced or completely eliminated due to irrigation diversion. In addition, subsurface flows can occur as a result of severe cattle grazing along riparian areas and deltas. Groundwater and springs also feed the lake, and are likely critical for oxygen supply during winter stratification. During the winter of 1991, Henrys Lake experienced low dissolved oxygen levels resulting in large fish kills. It is thought that thick ice cover combined with an increase in nutrient loads created conditions resulting in poor water quality. The Idaho Department of Health and Welfare, DEQ is currently conducting a study to determine the water quality of Henrys Lake, the sources contributing to its deterioration, and potential remedial actions to correct problem areas.

  3. Obituary: Richard L. (Dick) Walker, Jr., 1938-2005

    NASA Astrophysics Data System (ADS)

    Pier, Jeffrey R.; Mason, Brian

    2005-12-01

    Dick Walker, 67, died 30 March 2005 in Flagstaff, AZ, following a long illness. He was born on 9 March 1938 in Hampton, Iowa and grew up in Waterloo, Iowa. As a child, Dick was fascinated with astronomy and built his own telescope. He saved his pennies and bought and read every book on the subject he could find. He also raised pigeons, naming four of them Hertzsprung, Hoyle, Gamow, and Kron. In 1957, the year Sputnik was launched, Dick began his college studies at the University of Northern Iowa in Cedar Falls. In 1959, he transferred to the State University of Iowa (subsequently renamed the University of Iowa) in Iowa City, where he earned a BA degree in astronomy and physics in 1963. He joined the staff of the U.S. Naval Observatory in Washington, DC, where he worked in the Time Service Division for a year before his assignment to the Astrometry and Astrophysics Division. Dick relocated to Flagstaff, AZ, in 1966 to continue his Naval Observatory service at the Flagstaff Station. His retirement in May 1999, ended a thirty-six-year career with USNO. Dick was first and foremost an observational astronomer. From the mid 1960s through the late 1970s, much of Dick's time was devoted to the measurement of binary stars, observing with the 12-inch and 26-inch refractors in Washington and later the 40-inch and 61-inch reflectors in Flagstaff. He also made many trips to Lick Observatory to work with the 36-inch Clark Refractor there. During this time he consulted with Charles Worley, who was observing on the 26-inch, to make sure time was well-spent examining doubles that could not be observed in Washington. This period of observing overlapped with the early years of speckle interferometry, and Dick's observations, made with the largest telescope used for micrometry at the time, were very important for ascertaining the veracity of this new technique. He was a studious and very careful observer of doubles and made over 8,000 measures, resulting in almost 3,000 mean positions. While measuring known systems for orbital analysis, he discovered 22 pairs (mostly additional components to these systems) and moving pairs, and his highlighting the rapid motion of these systems resulted in them being placed on many programs and led to the more definitive orbits of today. As a staff member of the Flagstaff Station, Dick was, for over 30 years, one of the principal observers on the 61-inch parallax program. He also ventured into other areas of astronomy, including planetary systems. He is credited with discovering the moon of Saturn, Epimetheus, in December 1966, with the USNO Flagstaff Station 61-inch Kaj Strand Astrometric Reflector. He also obtained photographic plates to determine accurate positions of the outer planets for the Voyager 2 approaches to Uranus in 1986 and Neptune in 1989. It is interesting to note that Dick's career in observational astronomy spanned three different eras of astronomical instrumentation and technique. He began his career doing eyeball astronomy, using a filar micrometer to measure double star separations. Photographic astronomy then became dominant and he took many thousands of plates. During the last ten years of his career, electronic cameras, primarily CCDs, replaced photographic plates. He readily adapted to the changing technologies. A man of many interests, Dick was fascinated by the history of astronomy, especially archeoastronomy, as well as Egyptology. He taught himself the language of hieroglyphics. In 1977, having accumulated several weeks of vacation time, he set off on a trek to walk the Nile for 500 miles from Aswan to Cairo. One night, in the town Asyut along the Nile, he was brought into the police station. The local inhabitants found it hard to credit his story that he was simply on a walk and questioned him as a possible Israeli spy. Following his retirement from the Naval Observatory, Dick consulted in a couple of construction projects. He designed the analemma and the skywalk star fields for the Koch Center for Science, Math, and Technology at Deerfield Academy in Massachusetts. He also consulted with James Turrell, providing astronomical position information for the design of the Roden Crater Project outside of Flagstaff. While he will be remembered for his significant scientific contributions to the field of astronomy, those who knew Dick, both scientists and non-scientists alike, will probably remember him best for his humility, his humanity, and his loyal and abiding friendship. He was a man with a terrific sense of humor and an infectious laugh. It was always an honor and pleasure to be in his company. Richard L. Walker, Jr. is survived by his wife, Patricia, two daughters from his first marriage: Brenda Walker of Las Vegas, NV, and Pamela Hepburn of Holland, OH, as well as four children from Patricia's first marriage: Doug Browning of Lake Havasu City, AZ, Michael Browning of Kingman, AZ, Kim Bructo of Orient, OH, and Jennifer Brown of Lake Havasu City, AZ. He is also survived by ten grandchildren and three great-grandchildren. He was preceded in death by his father Richard, mother Mary, and daughter, Paula Jean Elizabeth Stone.

  4. Antigravity in F( R) and Brans-Dicke theories

    NASA Astrophysics Data System (ADS)

    Oikonomou, V. K.; Karagiannakis, N.

    2014-12-01

    We study antigravity in F( R)-theory originating scalar-tensor theories and also in Brans-Dicke models without cosmological constant. For the F( R) theory case, we obtain the Jordan frame antigravity scalar-tensor theory by using a variant of the Lagrange multipliers method and we numerically study the time dependent effective gravitational constant. As we shall demonstrate in detail by using some viable F( R) models, although the initial F( R) models have no antigravity, their scalar-tensor counterpart theories might or not have antigravity, a fact mainly depending on the parameter that characterizes antigravity. Similar results hold true in the Brans-Dicke model, which we also studied numerically. In addition, regarding the Brans-Dicke model we also found some analytic cosmological solutions. Since antigravity is an unwanted feature in gravitational theories, our findings suggest that in the case of F( R) theories, antigravity does not occur in the real world described by the F( R) theory, but might occur in the Jordan frame scalar-tensor counterpart of the F( R) theory, and this happens under certain circumstances. The central goal of our study is to present all different cases in which antigravity might occur in modified gravity models.

  5. Dynamics and cosmological constraints on Brans-Dicke cosmology

    NASA Astrophysics Data System (ADS)

    Hrycyna, Orest; Szydłowski, Marek; Kamionka, Michał

    2014-12-01

    We investigate observational constraints on the Brans-Dicke cosmological model using observational data coming from distant supernovae type Ia, the Hubble function H (z ) measurements, information coming from the Alcock-Paczyński test, and baryon acoustic oscillations. Our analysis is based on the modified Friedmann function resulting form dynamical investigations of Brans-Dicke cosmology in the vicinity of a de Sitter state. The qualitative theory of dynamical systems enables us to obtain three different behaviors in the vicinity of this state. We find for a linear approach to the de Sitter state ωBD=-0.8606-0.1341+0.8281 , for an oscillatory approach to the de Sitter state ωBD=-1.1103-0.1729+0.1872 , and for the transient de Sitter state represented by a saddle-type critical point ωBD=-2.3837-4.5459+0.4588 . We obtain the mass of the Brans-Dicke scalar field at the present epoch as mϕ˜H0. The Bayesian methods of model comparison are used to discriminate between obtained models. We show that observational data point toward vales of the ωBD parameter close to the value suggested by the low-energy limit of the bosonic string theory.

  6. Metallic Nickel Nanoparticles May Exhibit Higher Carcinogenic Potential than Fine Particles in JB6 Cells

    PubMed Central

    Bowman, Linda; Zou, Baobo; Mao, Guochuan; Xu, Jin; Castranova, Vincent; Zhao, Jinshun; Ding, Min

    2014-01-01

    While numerous studies have described the pathogenic and carcinogenic effects of nickel compounds, little has been done on the biological effects of metallic nickel. Moreover, the carcinogenetic potential of metallic nickel nanoparticles is unknown. Activator protein-1 (AP-1) and nuclear factor-κB (NF-κB) have been shown to play pivotal roles in tumor initiation, promotion, and progression. Mutation of the p53 tumor suppressor gene is considered to be one of the steps leading to the neoplastic state. The present study examines effects of metallic nickel fine and nanoparticles on tumor promoter or suppressor gene expressions as well as on cell transformation in JB6 cells. Our results demonstrate that metallic nickel nanoparticles caused higher activation of AP-1 and NF-κB, and a greater decrease of p53 transcription activity than fine particles. Western blot indicates that metallic nickel nanoparticles induced a higher level of protein expressions for R-Ras, c-myc, C-Jun, p65, and p50 in a time-dependent manner. In addition, both metallic nickel nano- and fine particles increased anchorage-independent colony formation in JB6 P+ cells in the soft agar assay. These results imply that metallic nickel fine and nanoparticles are both carcinogenetic in vitro in JB6 cells. Moreover, metallic nickel nanoparticles may exhibit higher carcinogenic potential, which suggests that precautionary measures should be taken in the use of nickel nanoparticles or its compounds in nanomedicine. PMID:24691273

  7. Metallic nickel nanoparticles may exhibit higher carcinogenic potential than fine particles in JB6 cells.

    PubMed

    Magaye, Ruth; Zhou, Qi; Bowman, Linda; Zou, Baobo; Mao, Guochuan; Xu, Jin; Castranova, Vincent; Zhao, Jinshun; Ding, Min

    2014-01-01

    While numerous studies have described the pathogenic and carcinogenic effects of nickel compounds, little has been done on the biological effects of metallic nickel. Moreover, the carcinogenetic potential of metallic nickel nanoparticles is unknown. Activator protein-1 (AP-1) and nuclear factor-κB (NF-κB) have been shown to play pivotal roles in tumor initiation, promotion, and progression. Mutation of the p53 tumor suppressor gene is considered to be one of the steps leading to the neoplastic state. The present study examines effects of metallic nickel fine and nanoparticles on tumor promoter or suppressor gene expressions as well as on cell transformation in JB6 cells. Our results demonstrate that metallic nickel nanoparticles caused higher activation of AP-1 and NF-κB, and a greater decrease of p53 transcription activity than fine particles. Western blot indicates that metallic nickel nanoparticles induced a higher level of protein expressions for R-Ras, c-myc, C-Jun, p65, and p50 in a time-dependent manner. In addition, both metallic nickel nano- and fine particles increased anchorage-independent colony formation in JB6 P+ cells in the soft agar assay. These results imply that metallic nickel fine and nanoparticles are both carcinogenetic in vitro in JB6 cells. Moreover, metallic nickel nanoparticles may exhibit higher carcinogenic potential, which suggests that precautionary measures should be taken in the use of nickel nanoparticles or its compounds in nanomedicine. PMID:24691273

  8. Henri Laborit and the inhibition of action

    PubMed Central

    Kunz, Edward

    2014-01-01

    Henri Laborit was one of the founders of modern neuropsychopharmacology, having discovered, or participated in, the discovery of chlorpromazine, gamma-OH, clomethiazole, and minaprine. He also put forward a theory regarding the necessity of counteracting the negative consequences of defense mechanisms during anesthesia or behavioral inhibition. The scope of his work covers neurophysiology, pharmacology, psychiatry, and psychosomatics. His independence of spirit meant that most of his research was not done within university settings. PMID:24733976

  9. Do massive Brans-Dicke theories of gravitation imitate Brans-Dicke theories with nonzero divergence of energy-momentum tensor

    NASA Technical Reports Server (NTRS)

    Smalley, L. L.

    1974-01-01

    Acharya and Hogan (1973) have introduced a massive scalar field into the usual Brans-Dicke (1961) theory of gravitation. Formally they obtain certain field equations. The assumption of a nonzero divergence for T mu nu (or equivalently the introduction of sources) formally imitates a massive Brans-Dicke and satisfies the condition of Acharya and Hogan that the theory be indistinguishable with the classical test of the Einstein theory. Although it was shown elsewhere that the modified Brans-Dicke theory agrees with the classical test under certain conditions, there were no specified limits on omega, a similar circumstance discovered by Acharya and Hogan for the massive scalar field.

  10. View of fourlane Henry Hudson Parkway winding through Riverdale, showing ...

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

    View of four-lane Henry Hudson Parkway winding through Riverdale, showing service roads, from White Hall Cooperative Apartments. Henry Hudson Bridge, Inwood Hill Park, the Cloisters and Fort Tryon Park, George Washington Bridge, and Manhattan skyline in background, looking southwest. - Henry Hudson Parkway, Extending 11.2 miles from West 72nd Street to Bronx-Westchester border, New York, New York County, NY

  11. An instance of sleep paralysis in Moby-Dick.

    PubMed

    Herman, J

    1997-07-01

    It is suggested that picturesque medical conditions can, at times, be encountered in literary works composed prior to their clinical delineation. This is true of sleep paralysis, of which the first scientific description was given by Silas Weir Mitchell in 1876. A quarter of a century earlier, Herman Melville, in Moby-Dick, gave a precise account of a case, including the predisposing factors and sexual connotations, all in accord with modern theory. The details of Ishmael's attack of sleep paralysis, the stresses leading up to it, and the associations causing him to recall the experience are given here. PMID:9322274

  12. The limits of pity in Bartleby and Moby Dick.

    PubMed

    Rosenblatt, L

    2008-12-01

    Failures in the emotional connection between doctors and their patients tend to be reported in terms of compassion fatigue, burn-out, secondary trauma and depression in overlapping and somewhat interchangeable ways. In Moby Dick and Bartleby, Melville interrogates the culturally accepted descriptions of pity and explores the reasons for the limits in human pity he observed and depicted. In an attempt to understand whether the feelings of pity that a patient's suffering can evoke in physicians are sustainable, desirable, or counter-productive, Melville's narratives, along with that of a woman who, while living with advanced cancer experiences the breakdown of a key medical relationship, will be considered. PMID:23674582

  13. Observational constraints imposed by Brans-Dicke cosmologies.

    NASA Technical Reports Server (NTRS)

    Morganstern, R. E.

    1973-01-01

    Flat-space Brans-Dicke (BD) cosmologies previously found are analyzed in more detail. It is shown that the observed values of the matter density, the Hubble age, the ages of objects in the universe, the deceleration parameter, and the bound on the (unobserved) fractional time variation of the gravitational constant are too inaccurate to distinguish between the BD and Einstein-Friedmann cosmologies. An attempt is made to argue that because of the great degree of latitude in the observational constraints imposed by the BD cosmologies, efforts to improve the bound on the fractional time variation of G alone are not sufficient to rule out the BD theory.

  14. The medical life of Henry Norman Bethune

    PubMed Central

    Deslauriers, Jean; Goulet, Denis

    2015-01-01

    BACKGROUND: Henry Norman Bethune is one of the most exciting and incredible surgeons that Canada has ever produced. Indeed, he is often characterized as one of the world’s best-known surgeons. He was an innovator and his scientific contributions have stood the test of time. In Canada, he will forever be remembered as a social activist committed to the welfare of the poor and to the reform of the health care system. In the People’s Republic of China, he is idolized and remains the only foreigner to ever become a national hero. OBJECTIVE: To detail the numerous and significant achievements of Henry Norman Bethune in the field of thoracic surgery and as a social activist and describe his heroic war-time actions on the battlefields of both Spain and China. METHOD: Information was gathered through the reading of the numerous publications written about the life and work of Bethune, interviews with knowledgeable people from Canadian and Chinese universities, analysis of Bethune’s own publications, and extensive experience of one of the authors in China. RESULTS: In the social sense, Henry Norman Bethune had a difficult personality, but he was deeply caring about the plight of his patients, especially the poor. As a thoracic surgeon, he could be ingenious, thoughtful and effective but he could also be abrasive, restless and temperamental. His scientific contributions were sound and, at the time, gained worldwide attention. As an activist, he led a crusade to reform the Canadian health care system, demanding free health care for all. His outstanding work during the Spanish Civil War, where he organized the first ever mobile blood transfusion unit, and during the Sino-Japanese war, where he was totally committed to the welfare of both soldiers and civilian population, were deliberate acts of resistance against Fascist onslaught and enthusiasm for the Communist cause. CONCLUSIONS: Henry Norman Bethune was unconventional and a revolutionary, but he was brilliant. He will forever be remembered as an innovative thoracic surgeon and outstanding humanitarian.

  15. Xenobiotics enhance laccase activity in alkali-tolerant γ-proteobacterium JB

    PubMed Central

    Singh, Gursharan; Batish, Mona; Sharma, Prince; Capalash, Neena

    2009-01-01

    Various genotoxic textile dyes, xenobiotics, substrates (10 µM) and agrochemicals (100 µg/ml) were tested for enhancement of alkalophilic laccase activity in γ-proteobacterium JB. Neutral Red, Indigo Carmine, Naphthol Base Bordears and Sulphast Ruby dyes increased the activity by 3.7, 2.7, 2.6 and 2.3 fold respectively. Xenobiotics/substrates like p-toluidine, 8-hydroxyquinoline and anthracine increased it by 3.4, 2.8 and 2.3 fold respectively. Atrazine and trycyclozole pesticides enhanced the activity by 1.95 and 1.5 fold respectively. PMID:24031313

  16. Development of a New Shielding Model for JB-Line Dose Rate Calculations

    SciTech Connect

    Buckner, M.R.

    2001-08-09

    This report describes the shielding model development for the JB-Line Upgrade project. The product of this effort is a simple-to-use but accurate method of estimating the personnel dose expected for various operating conditions on the line. The current techniques for shielding calculations use transport codes such as ANISN which, while accurate for geometries which can be accurately approximated as one dimensional slabs, cylinders or spheres, fall short in calculating configurations in which two-or three-dimensional effects (e.g., streaming) play a role in the dose received by workers.

  17. Frequency comparison of optical lattice clocks beyond the Dick limit

    NASA Astrophysics Data System (ADS)

    Takamoto, Masao; Takano, Tetsushi; Katori, Hidetoshi

    2011-05-01

    The supreme accuracy of atomic clocks relies on the universality of atomic transition frequencies. The stability of a clock, meanwhile, measures how quickly the clock's statistical uncertainties are reduced. The ultimate measure of stability is provided by the quantum projection noise, which improves as 1/?N by measuring N uncorrelated atoms. Quantum projection noise limited stabilities have been demonstrated in caesium clocks and in single-ion optical clocks, where the quantum noise overwhelms the Dick effect attributed to local oscillator noise. Here, we demonstrate a synchronous frequency comparison of two optical lattice clocks using 87Sr and 88Sr atoms, respectively, for which the Allan standard deviation reached 1 10-17 in an averaging time of 1,600 s by cancelling out the Dick effect to approach the quantum projection noise limit. The scheme demonstrates the advantage of using a large number (N ~ 1,000) of atoms in optical clocks and paves the way to investigating the inherent uncertainties of clocks and relativistic geodesy on a timescale of tens of minutes.

  18. Dynamical complexity of the Brans-Dicke cosmology

    SciTech Connect

    Hrycyna, Orest; Szydłowski, Marek E-mail: marek.szydlowski@uj.edu.pl

    2013-12-01

    The dynamics of the Brans-Dicke theory with a quadratic scalar field potential function and barotropic matter is investigated. The dynamical system methods are used to reveal complexity of dynamical evolution in homogeneous and isotropic cosmological models. The structure of phase space crucially depends on the parameter of the theory ω{sub BD} as well as barotropic matter index w{sub m}. In our analysis these parameters are treated as bifurcation parameters. We found sets of values of these parameters which lead to generic evolutional scenarios. We show that in isotropic and homogeneous models in the Brans-Dicke theory with a quadratic potential function the de Sitter state appears naturally. Stability conditions of this state are fully investigated. It is shown that these models can explain accelerated expansion of the Universe without the assumption of the substantial form of dark matter and dark energy. The Poincare construction of compactified phase space with a circle at infinity is used to show that phase space trajectories in a physical region can be equipped with a structure of a vector field on nontrivial topological closed space. For ω{sub BD} < −3/2 we show new types of early and late time evolution leading from the anti-de Sitter to the de Sitter state through an asymmetric bounce. In the theory without a ghost we find bouncing solutions and the coexistence of the bounces and the singularity. Following the Peixoto theorem some conclusions about structural stability are drawn.

  19. Stationary axially symmetric solutions in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Kirezli, Pınar; Delice, Özgür

    2015-11-01

    Stationary, axially symmetric Brans-Dicke-Maxwell solutions are reexamined in the framework of the Brans-Dicke (BD) theory. We see that, employing a particular parametrization of the standard axially symmetric metric simplifies the procedure of obtaining the Ernst equations for axially symmetric electrovacuum spacetimes for this theory. This analysis also permits us to construct a two parameter extension in both Jordan and Einstein frames of an old solution generating technique frequently used to construct axially symmetric solutions for BD theory from a seed solution of general relativity. As applications of this technique, several known and new solutions are constructed including a general axially symmetric BD-Maxwell solution of Plebanski-Demianski with vanishing cosmological constant, i.e., the Kinnersley solution and general magnetized Kerr-Newman-type solutions. Some physical properties and the circular motion of test particles for a particular subclass of Kinnersley solution, i.e., a Kerr-Newman-NUT-type solution for BD theory, are also investigated in some detail.

  20. 75 FR 21288 - Henry Gas Storage LLC; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-23

    ... Energy Regulatory Commission Henry Gas Storage LLC; Notice of Application April 16, 2010. Take notice that on April 5, 2010, Henry Gas Storage LLC (HGS), 1010 Lamar, Suite 1720, Houston, Texas 77002, filed... section 7(c)(1)(B) of the Natural Gas Act (NGA), to perform specific temporary activity related to...

  1. The Rice University Press Initiative: An Interview with Charles Henry

    ERIC Educational Resources Information Center

    Trevitte, Chad; Henry, Charles

    2007-01-01

    In this interview Charles Henry, publisher of the Rice University Press (RUP), discusses RUP's rebirth as a fully digital university press. Henry addresses the circumstances that led to this decision, and he further outlines the RUP business model whereby the press will publish its own titles--both digitally and in print-on-demand--while…

  2. Professor Henry, Mr. Faraday, and the Hunt for Electromagnetic Induction

    NASA Astrophysics Data System (ADS)

    Moyer, Albert E.

    1997-04-01

    On different sides of the Atlantic but about the same time, Michael Faraday and Joseph Henry announced success in a quest that had preoccupied the scientific community for a decade: coaxing electricity from magnetism. "Mutual induction," what Faraday and Henry had identified in the early 1830s, would turn out to be not only a foundational concept in the physics of electricity and magnetism but also the principle behind the technology of electrical transformers and generators--two mainstays of industrialization. Although Faraday's breakthrough in London and Henry's in Albany might appear to be classic examples of "independent discovery," they were not. The two natural philosophers shared a similar orientation toward their research and, moreover, a distinctive laboratory instrument: Henry's new, powerful electromagnet. Thus, the story of Henry's and Faraday's search for induction illuminates not only the workings of Victorian science but also the crucial part that an instrument--the unadorned hardware--can play in scientific inquiry. Albert Moyer takes this story from his biography of Joseph Henry that Smithsonian Institution Press is about to publish in commemoration of the 200th anniversary of Henry's birth. The biography focuses on Henry's early and middle years, 1797-1847, from his emergence as America's foremost physical scientist to his election as the Smithsonian Institution's first director.

  3. Teaching Students about the Environment with Henry David Thoreau

    ERIC Educational Resources Information Center

    Curriculum Review, 2008

    2008-01-01

    "Walden: The Ballad of Thoreau" is a two-act four-character play about the final two days writer Henry David Thoreau spent in his cabin before leaving Walden Pond. Teachers can use this play to teach about preserving the earth to students. This article presents a brief synopsis of the play and a brief biography of Henry David Thoreau.

  4. 77 FR 70159 - Knueppel, Henry W.; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-23

    ... the ``eFiling'' link at http://www.ferc.gov . Persons unable to file electronically should submit an... Energy Regulatory Commission Knueppel, Henry W.; Notice of Filing Take notice that on November 15, 2012, Henry W. Knueppel submitted for filing, an application for authority to hold interlocking...

  5. Henry Hudson Bridge over Harlem River Shipping Canal at confluence ...

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

    Henry Hudson Bridge over Harlem River Shipping Canal at confluence with Hudson River, from Isham Park, view northeast. Inwood Hill Park on left, Spuyten Duyvil Shorefront Park on right, Palisades Interstate Park in background. - Henry Hudson Parkway, Extending 11.2 miles from West 72nd Street to Bronx-Westchester border, New York, New York County, NY

  6. West Harlem Walk (Hudson River Valley Greenway) beneath Henry Hudson ...

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

    West Harlem Walk (Hudson River Valley Greenway) beneath Henry Hudson Parkway (HHP) Viaduct at West 155th Street vicinity, with Palisades, George Washington Bridge, and Little Red Lighthouse (visible to left of bridge tower) in background, looking northeast. - Henry Hudson Parkway, Extending 11.2 miles from West 72nd Street to Bronx-Westchester border, New York, New York County, NY

  7. Memory Drum Theory's C Movement: Revelations from Franklin Henry

    ERIC Educational Resources Information Center

    Fischman, Mark G.; Christina, Robert W.; Anson, J. Greg

    2008-01-01

    Franklin Henry's "memory drum" theory of neuromotor reaction (Henry & Rogers, 1960) was one of the most influential studies of the response programming stage of information processing. The paper is the most-cited study ever published in the "Research Quarterly for Exercise and Sport." However, few people know there is a noteworthy error in the…

  8. Antitumor-promoting constituents from Dioscorea bulbifera L. in JB6 mouse epidermal cells.

    PubMed

    Gao, Huiyuan; Kuroyanagi, Masanori; Wu, Lijun; Kawahara, Nobuo; Yasuno, Takeaki; Nakamura, Yoshiyuki

    2002-09-01

    An antitumor-promoting effect was found in the extracts/ingredients of a plant used as a traditional medicine in mainland China, using the neoplastic transformation assay of mouse epidermal JB6 cell lines. The ethyl acetate soluble fraction of 75% ethanol extract of the rhizomes of Dioscorea bulbifera L. showed an inhibitory effect against the tumor promotion of JB6 (Cl 22 and Cl 41) cells induced by a promoter, 12-O-tetradecanoylphorbol-13-acetate (TPA). Further investigation on the constituents of the EtOAc fraction from the rhizomes revealed the chemical structure to be kaempferol-3,5-dimethyl ether (1), caryatin (2), (+)-catechin (3), myricetin (4), quercetin-3-O-galactopyranoside (5), myricetin-3-O-galactopyranoside (6), myricetin-3-O-glucopyranoside (7) and diosbulbin B (8). Constituent antitumor-promoting activities were also examined in the same way. Compounds 1-7, characterized as flavonoids with the two hydroxyl groups at C-7 and C-4', showed the most potent inhibitory effect, but there seemed to be differences in the inhibitory effect between flavonol aglycones and flavonol glycosides. Compared with (-)-epicatechin, (+)-catechin exhibited much stronger inhibitory activity which suggested that chemical stereo structures of compounds affect the efficiency of inhibition. Compound 8 showed moderate activity. The constituents with antitumor-promoting activity from this plant are reported for the first time. PMID:12230129

  9. The deviation of light path in Einstein-Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Huang, Z. G.; Lu, H. Q.; Pan, P. P.

    2005-02-01

    Both Jordan-Brans-Dicke (shortened JBD) theory and Brans-Dicke theory in the Einstein’s frame (shortened EBD) are treated as Brans-Dicke theory. However, we learn that only Pauli metric represents the massless spin-two graviton and thus, should be identified as physical. If one just considers the weak field approximation and Newtonian limit, EBD theory gives the same results with Einstein’s general relativity. So, it is necessary to consider strong field effects and cosmological model. The purpose of this paper is to find the exact spherically symmetric metric in the strong field situation, and deduce the deviation of light path in EBD theory.

  10. Experimental quantum networking protocols via four-qubit hyperentangled Dicke states.

    PubMed

    Chiuri, A; Greganti, C; Paternostro, M; Vallone, G; Mataloni, P

    2012-10-26

    We report the experimental demonstration of two quantum networking protocols, namely quantum 1→3 telecloning and open-destination teleportation, implemented using a four-qubit register whose state is encoded in a high-quality two-photon hyperentangled Dicke state. The state resource is characterized using criteria based on multipartite entanglement witnesses. We explore the characteristic entanglement-sharing structure of a Dicke state by implementing high-fidelity projections of the four-qubit resource onto lower-dimensional states. Our work demonstrates for the first time the usefulness of Dicke states for quantum information processing. PMID:23215188

  11. Biodegradation of Benzene, Toluene, Ethylbenzene, and o-, m-, and p-Xylenes by the Newly Isolated Bacterium Comamonas sp. JB.

    PubMed

    Jiang, Bei; Zhou, Zunchun; Dong, Ying; Tao, Wei; Wang, Bai; Jiang, Jingwei; Guan, Xiaoyan

    2015-07-01

    A bacterium designated strain JB, able to degrade six benzene, toluene, ethylbenzene, and o-, m-, and p-xylene (BTEX) compounds, was isolated from petroleum-contaminated soil. Taxonomic analyses showed that the isolate belonged to Comamonas, and until now, the genus Comamonas has not included any known BTEX degraders. The BTEX biodegradation rate was slightly low on the mineral salt medium (MSM), but adding a small amount of yeast extract greatly enhanced the biodegradation. The relationship between specific degradation rate and individual BTEX was described well by Michaelis-Menten kinetics. The treatment of petrochemical wastewater containing BTEX mixture and phenol was shown to be highly efficient by BTEX-grown JB. In addition, toxicity assessment indicated the treatment of the petrochemical wastewater by BTEX-grown JB led to less toxicity than untreated wastewater. PMID:26018344

  12. Henry Norris Russell and the Expanding Universe

    NASA Astrophysics Data System (ADS)

    DeVorkin, D.

    2013-04-01

    Henry Norris Russell, one of the most influential American astronomers of the first half of the 20th Century, had a special place in his heart for the Lowell Observatory. Although privately critical of the founder for his pronouncements about life on Mars and the superiority of the Mars Hill observing site, he always supported the Observatory in public and professional circles. He staunchly supported Tombaugh's detection of a planet as leading from Lowell's prediction, and always promoted V. M. Slipher's spectroscopic investigations of planetary and stellar phenomena. But how did he react to Slipher's puzzling detection of the extreme radial velocities of spiral nebulae starting in 1912, and how did he regard the extension and interpretation of those observations by Hubble and others in following decades? Here we describe the arc of Russell's reactions, dating from Slipher's first detection, as an indicator of how mainstream stellar astronomers reacted to the concept of an expanding universe.

  13. Victor Henri: 111 years of his equation.

    PubMed

    Cornish-Bowden, Athel; Mazat, Jean-Pierre; Nicolas, Serge

    2014-12-01

    Victor Henri's great contribution to the understanding of enzyme kinetics and mechanism is not always given the credit that it deserves. In addition, his earlier work in experimental psychology is totally unknown to biochemists, and his later work in spectroscopy and photobiology almost equally so. Applying great rigour to his analysis he succeeded in obtaining a model of enzyme action that explained all of the observations available to him, and he showed why the considerable amount of work done in the preceding decade had not led to understanding. His view was that only physical chemistry could explain the behaviour of enzymes, and that models should be judged in accordance with their capacity not only to explain previously known facts but also to predict new observations against which they could be tested. The kinetic equation usually attributed to Michaelis and Menten was in reality due to him. His thesis of 1903 is now available in English. PMID:25252213

  14. Obituary: Henry Albers (1925-2009)

    NASA Astrophysics Data System (ADS)

    Chromey, Fred

    2011-12-01

    Henry Albers, professor of astronomy at Vassar College for over thirty years, died March 29, 2009, in Fairhope, Alabama. For his work at Vassar, where he held the Maria Mitchell Chair, Albers received the first Maria Mitchell Women in Science Award for his inspiration of women astronomers. He said "In the final analysis it is the students who bring the joy into teaching." As a professional astronomer, Albers did observational work on Galactic structure in the southern Milky Way, and on the structure of the Magellanic Clouds. In retirement, Albers published Maria Mitchell - A Life in Journals and Letters, the firsthand account of America's first woman astronomer. Albers's research was on photographic near-infrared spectroscopy of red giant stars in the southern Milky Way, some proper motion studies, and on the structure of the Magellanic Clouds. A series of seven NSF grants supported his six trips to Chile to make spectroscopic observations, as well as his sabbatical collaborations at Minnesota, Leiden, and the Royal Observatory in Edinburgh. Henry Albers arrived at Vassar in 1958, to find an astronomy program that had been recently absorbed by the physics department, and that was suffering neglect after the retirement of Maud Makemson. For the next 31 years, with incredible energy -- he sometimes taught seven courses a year -- he built the astronomy program into one double in size (from one to two tenure lines), whose th century facilities have been replaced with a st century observatory. For a remarkable stretch of 20-some-years, Albers and physicist Bob Stearns, with considerable grace, alternated chairmanship of the joint department of physics and astronomy. Henry Albers was a devoted citizen of Vassar College and an enthusiastic participant in the process of faculty governance at that institution. He would have been the first to concede that his enthusiasm was sometimes excessive, and that his contributions at faculty meetings occasionally failed to move the discussion forward. Before more than one meeting, he was known to make a note to himself on his copy of the agenda, which read, in large block letters: "shut up." Fortunately, Albers was seldom able to repress his concern for the College or his dedication to its improvement. He served on all major committees and most minor ones as well. For example, he chaired a committee that eventually got telephones in faculty offices, another that lobbied for establishment of an academic computing center, and another that constructed Vassar's system of post-tenure review of senior faculty. It was Henry Albers who introduced the motion on the floor of the faculty, which passed by a vote of 100 to 2, moving that Vassar College accept coeducation. Albers was a caring mentor and although fundamentally compassionate, had a somewhat prankish sense of humor - unfailingly directed at the most pompous targets in sight. Although deeply dedicated to the College, Albers had an admirable ability to disengage from his life at Vassar. He regularly spent college breaks as the resident astronomer on cruise ships. Every May, he would celebrate his last class by sharing a jug of wine in the faculty commons with his regular lunchtime group. After retiring in 1989, he continued his hobbies of gardening, painting, and choral singing, but also immediately began work as a math and science volunteer in the local public schools on Cape Cod. He completed his final scholarly project, his edition of the Letters and Journals of Maria Mitchell, in 2002.

  15. Wormholes and naked singularities in Brans-Dicke cosmology

    NASA Astrophysics Data System (ADS)

    Tretyakova, D. A.; Latosh, B. N.; Alexeyev, S. O.

    2015-09-01

    We perform an analytical and numerical study of static spherically symmetric solutions in the context of the Brans-Dicke-like cosmological model by Elizalde et al (2004 Phys. Rev. D 70 043539) with an exponential potential. In this model the phantom regime arises without the appearance of any ghost degree of freedom due to the specific form of coupling. For certain parameter ranges the model contains a regular solution that we interpret as a wormhole in an otherwise de Sitter Universe. We put several bounds on the parameter values: ω \\lt 0,{α }2/| ω | \\lt {10}-5,22.7≲ {φ }0≲ 25. The numerical solution could mimic the Schwarzschild one, so the original model is consistent with astrophysical and cosmological observational data. However, differences between our solution and the Schwarzschild one can be quite large, so black hole candidate observations could probably place further limits on the {φ }0 value.

  16. Dynamical apparent horizons in inhomogeneous Brans-Dicke universes

    NASA Astrophysics Data System (ADS)

    Faraoni, Valerio; Vitagliano, Vincenzo; Sotiriou, Thomas P.; Liberati, Stefano

    2012-09-01

    The presence and evolution of apparent horizons in a two-parameter family of spherically symmetric, time-dependent solutions of Brans-Dicke gravity are analyzed. These solutions were introduced to model space- and time-varying gravitational couplings and are supposed to represent central objects embedded in a spatially flat universe. We find that the solutions possess multiple evolving apparent horizons, both black hole horizons covering a central singularity and cosmological ones. It is not uncommon for two of these horizons to merge, leaving behind a naked singularity covered only by a cosmological horizon. Two characteristic limits are also explicitly worked out: the limit where the theory reduces to general relativity and the limit where the solutions become static. The physical relevance of this family of solutions is discussed.

  17. Phase transition in the periodically pulsed Dicke model

    NASA Astrophysics Data System (ADS)

    Dasgupta, Sayak; Bhattacharya, Utso; Dutta, Amit

    2015-05-01

    We study the effect of pulsed driving and kicked driving of the interaction term on the nonequilibrium phase transition in the Dicke model. Within the framework of Floquet theory, we observe the emergence of new nontrivial phases on impingement by such periodic pulses. Notably, our study reveals that a greater control over the dynamical quantum criticality is possible through the variation of multiple parameters related to the pulse, as opposed to a single parameter control in a monochromatic drive. Furthermore, the probability of the system remaining trapped in a metastable state during the observed first order transition from the superradiant to normal phase is found to be higher for small number of kicks (or pulses) in comparison to the sinusoidal perturbation.

  18. Exact cosmological solutions in modified Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Rasouli, S. M. M.; Vargas Moniz, Paulo

    2016-02-01

    In this paper, we obtain exact cosmological vacuum solutions for an extended FLRW homogeneous and isotropic Brans-Dicke (BD) universe in five dimensions for all values of the curvature index. Then, by employing the equations associated with a modified Brans-Dicke theory (MBDT) [1], we construct the physics on a four-dimensional hypersurface. We show that the induced matter obeys the equation of state of a fluid of barotropic type. We discuss the properties of such induced matter for some values of the equation of state parameter and analyze in detail their corresponding solutions. To illustrate the cosmological behaviors of the solutions, we contrast our solutions with those of the standard BD theory. We find that, in the MBDT scenario, it is impossible to find a physically acceptable solution associated with the negative curvature for both the dust-dominated and radiation-dominated universes. However, for spatially flat and closed universes, we argue that our obtained solutions are more general than those associated with the standard BD theory and, moreover, they contain a few classes of solutions which have no analog in the BD cosmology. For these particular cases, we further compare the results with those extracted in the context of the induced-matter theory (IMT) and general relativity (GR). Furthermore, we discuss in detail the time behaviors of the cosmological quantities and compare them with recent observational data. We find a favorable range for the deceleration parameter associated with a matter-dominated spatially flat universe (for the late times), which is compatible with recent corresponding observational results.

  19. Brans-Dicke cosmology does not have the Λ CDM phase as a universal attractor

    NASA Astrophysics Data System (ADS)

    García-Salcedo, Ricardo; González, Tame; Quiros, Israel

    2015-12-01

    In this paper we seek for relevant information on the asymptotic cosmological dynamics of the Brans-Dicke theory of gravity for several self-interaction potentials. By means of the simplest tools of the dynamical systems theory, it is shown that the general relativity de Sitter solution is an attractor of the Jordan frame (dilatonic) Brans-Dicke theory only for the exponential potential U (φ )∝exp φ , which corresponds to the quadratic potential V (ϕ )∝ϕ2 in terms of the original Brans-Dicke field ϕ =exp φ , or for potentials which approach to exp φ at the stable point. At the de Sitter attractor, as well as at the stiff-matter equilibrium configurations, the dilaton is necessarily massless. We find bounds on the Brans-Dicke coupling constant ωBD , which are consistent with well-known results.

  20. Basic Fibroblast Growth Factor Regulates Persistent ERK Osciliations in Premaligant but not Malignant JB6 Cells

    SciTech Connect

    Weber, Thomas J.; Shankaran, Harish; Wiley, H. S.; Opresko, Lee K.; Chrisler, William B.; Quesenberry, Ryan D.

    2010-05-02

    basic fibroblast growth factor (bFGF or FGF2) plays an important role in epidermal wound healing in vivo and is associated with a persistent increased in the extracellular signal-regulated kinase (ERK) pathway in vitro. Here we have examined whether bFGF induces the closure of an experimental scratch wound in JB6 mouse epidermal cells and have explored the regulation of the ERK pathway by bFGF in the context of kinase oscillations. bFGF stimulation is associated with increases in cellular phospho-ERK and phospho-c-Jun levels. In addition, bFGF increases cell proliferation and a change in cell morphology (stellate appearance) in a dose-dependent fashion (0.1 – 100 ng/ml). bFGF treatment also promoted the closure of an experimental scratch wound in vitro. JB6 cells were stably transfected with an ERK1-GFP chimera to follow temporal ERK subcellular distribution patterns. We observe a persistent upregulation of the ERK pathway, as evidenced by a significant increase in nuclear ERK1-GFP levels at time points up to 24 hr after bFGF treatment. Interestingly, at the single cell level, ERK is observed to oscillate between nuclear and cytosolic compartments in response to bFGF treatment. Because this oscillatory behavior is asynchronous in the cell population, it is only clearly resolved at the single cell level. Collectively, data presented here are consistent with an important role for bFGF in wound healing and suggest a more complex regulation of the ERK pathway by bFGF than has previously been appreciated.

  1. Evolution of the Brans—Dicke Parameter in Generalized Chameleon Cosmology

    NASA Astrophysics Data System (ADS)

    Mubasher, Jamil; Momeni, D.

    2011-09-01

    Motivated by an earlier study of Sahoo and Singh [Mod. Phys. Lett. A 17 (2002) 2409], we investigate the time dependence of the Brans-Dicke parameter ω(t) for an expanding Universe in the generalized Brans-Dicke Chameleon cosmology, and obtain an explicit dependence of ω(t) in different expansion phases of the Universe. Also, we discuss how the observed accelerated expansion of the observable Universe can be accommodated in the present formalism.

  2. HENRY STREET SCHOOL, 1300 BLOCK BULL STREET, DETAIL OF NORTH ...

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

    HENRY STREET SCHOOL, 1300 BLOCK BULL STREET, DETAIL OF NORTH ELEVATION - Savannah Victorian Historic District, Bounded by Gwinnett, East Broad, West Broad Street & Anderson Lane, Savannah, Chatham County, GA

  3. 2. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    2. Historic American Buildings Survey Photographed by Henry F. Withey December 1936 VIEW OF MISSION FROM SOUTH SIDE OF VALLEY (DISTANCE ABOUT 3 MILES) - Mission San Diego de Alcala, Misson Valley Road, San Diego, San Diego County, CA

  4. 1. Henry Beardsley standing in front of his store in ...

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

    1. Henry Beardsley standing in front of his store in Ohio. Photographer unknown, 1887. Source: William M. Beardsley - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  5. 9. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    9. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF TANNERY (FROM WEST CORNER) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  6. 4. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    4. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SMITHY FROM SO. WEST CORNER. - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  7. 3. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    3. Historic American Buildings Survey Photographed by Henry F. Withey April 1937. RUINS OF SMITHY (LOOKING S.W.) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  8. James McHenry, MD: physician, patriot, politician and poet.

    PubMed

    Spiegel, Allen D; Kavaler, Florence

    2003-08-01

    James McHenry emigrated from Ireland to the American colonies in 1771. He studied medicine with Dr. Benjamin Rush in Philadelphia and immediately volunteered as an Army surgeon when the Revolutionary War began. After serving in the medical department in Massachusetts, New York and at Valley Forge in Pennsylvania, he became an aide to General George Washington and subsequently an aide to the Marquis de Lafayette. President Washington appointed McHenry Secretary of War and he continued in that post under president John Adams. While Secretary, he revised military regulations, established a professional standing Army, pacified the Indians, enlarged the naval forces, organized the armed forces under civilian authority and initiated plans for a military academy. Baltimore's Fort Whetstone was renamed Fort McHenry in his honor. During the War of 1812, Fort McHenry gained fame as the birthplace of the national anthem of the United States. PMID:12856797

  9. 23. Henry Whitehead place in Cades Cove looking ESE. ...

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

    23. Henry Whitehead place in Cades Cove looking ESE. - Great Smoky Mountains National Park Roads & Bridges, Cades Cove Road & Laurel Creek Road, From Townsend Wye to Cades Cove, Gatlinburg, Sevier County, TN

  10. 2. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    2. Historic American Buildings Survey Photographed by Henry F. Withey March 1936 VIEW OF FOUNTAIN IN MISSION PARK, MISSION PROPERTY AT ONE TIME. - Mission San Fernando Rey de Espana, Fountains, Mission Boulevard, San Fernando, Los Angeles County, CA

  11. 5. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    5. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SMITHY AND SOAP FACTORY (LOOKING SOUTH) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  12. 7. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    7. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SOAP FACTORY (S. W. Side) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  13. 2. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    2. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF FOUNTAIN, SMITHY AND SOAP FACTORY (LOOKING EAST) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  14. 8. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    8. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SOAP FACTORY FROM EAST CORNER. - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  15. 2. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    2. Historic American Buildings Survey Photographed by Henry F. Withey June 1937 WEST ELEVATION FROM NORTH END. - Casa del Rancho Aguaja de la Centinela, 7634 Midfield Road, Inglewood, Los Angeles County, CA

  16. 3. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    3. Historic American Buildings Survey Photographed by Henry F. Withey November 1936 WEST ELEVATION FROM NORTH END. - Casa del Rancho Aguaja de la Centinela, 7634 Midfield Road, Inglewood, Los Angeles County, CA

  17. 1. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    1. Historic American Buildings Survey Photographed by Henry F. Withey March 1936 VIEW OF SOUTH AND WEST SIDE FROM STREET. - Casa Adobe de San Rafael, 1340 Dorothy Drive, Glendale, Los Angeles County, CA

  18. 6. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    6. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 SOUTHWEST FRONT OF CHURCH (SOUTHEAST END) - Mission San Gabriel Arcángel, 428 South Mission Drive, San Gabriel, Los Angeles County, CA

  19. 5. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    5. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 ENTRANCE DETAIL (S. W. FRONT) - Mission San Gabriel Arcángel, 428 South Mission Drive, San Gabriel, Los Angeles County, CA

  20. 8. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    8. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 SOUTHEAST CORNER OF CHURCH - Mission San Gabriel Arcángel, 428 South Mission Drive, San Gabriel, Los Angeles County, CA

  1. 3. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    3. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 SOUTHWEST FRONT OF CHURCH (FROM WEST END) - Mission San Gabriel Arcángel, 428 South Mission Drive, San Gabriel, Los Angeles County, CA

  2. 2. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    2. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 SOUTHWEST FRONT OF PADRES QUARTERS AND CHURCH - Mission San Gabriel Arcángel, 428 South Mission Drive, San Gabriel, Los Angeles County, CA

  3. 1. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    1. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 SOUTHWEST FRONT OF PADRES QUARTERS AND CHURCH BELFRY. - Mission San Gabriel Arcángel, 428 South Mission Drive, San Gabriel, Los Angeles County, CA

  4. 1. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    1. Historic American Buildings Survey Photographed by Henry F. Withey March 1936 FOUNTAIN AND STATUE IN MISSION PARK AND MISSION MONASTERY (SOUTH FRONT) - Mission San Fernando Rey de Espana, Fountains, Mission Boulevard, San Fernando, Los Angeles County, CA

  5. James Paget Henry--a retrospective.

    PubMed

    Meehan, J P; Meehan, W P

    1997-01-01

    James Paget Henry really began his productive research career at the outset of the second world war. His studies of acceleration and the anoxia of high altitude were supported by the development of then new techniques of measuring and recording critical physiologic parameters such as vascular pressures, respiratory functions and haemoglobin saturation. His inquisitive mind made productive use of the instruments that had to be made by skilled instrument makers working in university shops. Much of this instrumentation has now found its way into the clinical arena where it is now the main armamentarium of cardiac diagnostic and respiratory function laboratories. His work in the space program preceeded that of the Russians but did not get recognition until Sputnik awakened the world to the possibilities of space flight. His development of the concept of a cardiovascular basis for fluid volume control and the supportive investigative work undertaken constitute a milestone in the annals of experimental physiology. The chimpanzees used in Project Mercury were found to be hypertensive which was related to the method of capture used by the commercial suppliers. This lead Jim to study the effect of early experience on resting blood pressure, an effort that soon developed into provocative studies of the biological basis of the stress response. PMID:9401600

  6. The spin-Dicke effect in OLED magnetoresistance

    NASA Astrophysics Data System (ADS)

    Waters, D. P.; Joshi, G.; Kavand, M.; Limes, M. E.; Malissa, H.; Burn, P. L.; Lupton, J. M.; Boehme, C.

    2015-11-01

    Pairs of charge-carrier spins in organic semiconductors constitute four-level systems that can be driven electromagnetically. Given appropriate conditions for ultrastrong coupling--weak local hyperfine fields Bhyp, large magnetic resonant driving fields B1 and low static fields B0 that define Zeeman splitting--the spin-Dicke effect, a collective transition of spin states, has been predicted. This parameter range is challenging to probe by electron paramagnetic resonance spectroscopy because thermal magnetic polarization is negligible. It is accessed through spin-dependent conductivity that is controlled by electron-hole pairs of singlet and triplet spin-permutation symmetry without the need of thermal spin polarization. Signatures of collective behaviour of carrier spins are revealed in the steady-state magnetoresistance of organic light-emitting diodes (OLEDs), rather than through radiative transitions. For intermediate B1, the a.c.-Zeeman effect appears. For large B1, a collective spin-ensemble state arises, inverting the current change under resonance and removing power broadening, thereby offering a unique window to ambient macroscopic quantum coherence.

  7. Sesquiterpene lactones isolated from indigenous Middle Eastern plants inhibit tumor promoter-induced transformation of JB6 cells

    PubMed Central

    2012-01-01

    Background Sesquiterpene lactones (SL) are plant secondary metabolites that are known for their anti-fungal, anti-bacterial, anti-inflammatory, and anti-tumor properties. Considering that several SL-derived drugs are currently in cancer clinical trials, we have tested two SL molecules, 3-β-methoxy-iso-seco-tanapartholide (β-tan) isolated from Achillea falcata and salograviolide A (Sal A) isolated from Centaurea ainetensis, for their anti-tumor properties. We used the mouse epidermal JB6P + cells as a model for tumor promotion and cellular transformation. Key players that are involved in cellular transformation and tumorigenesis are the AP-1 and NF-κB transcription factors; therefore, we assessed how β-tan and Sal A modulate their signaling pathways in JB6P + cells. Methods The effects of β-tan and Sal A on the growth of normal and neoplastic keratinocytes and on the tumor promotion-responsive JB6P + cells were determined using the MTT assay. Anchorage-independent cell growth transformation assays were used to evaluate the anti-tumor promoting properties of these SL molecules in JB6P + cells and dual luciferase reporter assays and western blot analysis were used to investigate their effects on tumor promoter-induced AP-1 and NF-κB activities and protein levels of key AP-1 and NF-кB target genes. Results β-tan and Sal A selectively inhibited tumor promoter-induced cell growth and transformation of JB6P + cells at concentrations that do not affect JB6P + and primary keratinocytes basal cell growth. In addition, both molecules reduced basal and tumor promoter-induced NF-κB transcriptional activities, differentially regulated basal and tumor promoter-induced AP-1 transcriptional activities, and modulated key players of the AP-1 and NF-κB signaling pathways. Conclusions These results highlight the anti-tumor promoting properties of β-tan and Sal A. These SL molecules isolated from two plant species native to the Middle East may provide opportunities for complementary medicine practices. PMID:22776414

  8. Stress-induced generation of N-acylethanolamines in mouse epidermal JB6 P+ cells.

    PubMed Central

    Berdyshev, E V; Schmid, P C; Dong, Z; Schmid, H H

    2000-01-01

    It has long been known that N-acylethanolamine phospholipids [N-acylphosphatidylethanolamine (N-acyl PE)] and N-acylethanolamines (NAEs) accumulate in mammalian tissues undergoing degenerative membrane changes associated with necrosis. Here we studied the effects of stress factors (UVB irradiation and serum deprivation) on the endogenous levels of N-acyl PE and NAE in mouse epidermal JB6 P(+) cells. We found that 16:0, 18:0, 18:1,n-9 and 18:1,n-7 are the predominant amide-linked fatty acids in both N-acyl PE and NAE in these cells. UVB irradiation and serum deprivation resulted in significantly increased levels of N-acyl PE and NAE, especially 18:1, n-9 N-acyl PE and NAE. UVB challenge increased the cellular content of anandamide (20:4,n-6 NAE), but this increase was the lowest of all NAEs measured. Serum deprivation resulted in a decreased cellular anandamide level, as well as a decrease in 20:4,n-6 N-acyl PE. Interestingly, the replacement of serum-free medium with medium containing 5% (v/v) fetal calf serum after 36 h of serum deprivation restored N-acyl PE and NAE levels almost completely within 4-8 h. These data suggest the involvement of N-acyl PE and NAE in cellular responses to stress. PMID:10677355

  9. Purification and characterization of the extracellular alpha-amylase from Streptococcus bovis JB1.

    PubMed Central

    Freer, S N

    1993-01-01

    The extracellular alpha-amylase (1,4-alpha-D-glucanglucanohydrolase; EC 3.2.1.1) from maltose-grown Streptococcus bovis JB1 was purified to apparent homogeneity by ion-exchange chromatography (Mono Q). The enzyme had an isoelectric point of 4.50 and an apparent molecular mass of 77,000 Da, as estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The enzyme was rich in acidic and hydrophobic amino acids. The 15-amino-acid NH2-terminal sequence was 40% homologous with the Bacillus subtilis saccharifying alpha-amylase and 27% homologous with the Clostridium acetobutylicum alpha-amylase. alpha-Amylase activity on soluble starch was optimal at pH 5.0 to 6.0. The enzyme was relatively stable between pH 5.5 and 8.5 and at temperatures below 50 degrees C. When soluble potato starch was used as the substrate, the enzyme had a Km of 0.88 mg.ml-1 and a kcat of 2,510 mumol of reducing sugar.min-1.mg of protein-1. The enzyme exhibited neither pullulanase nor dextranase activity and was 40 to 70% as active on amylopectin as on amylose. The major end products of amylose hydrolysis were maltose, maltotriose, and maltotetraose. Images PMID:8517735

  10. Isolation of Strain MLTeJB From Mono Lake, California, a Dissimilatory Tellurite Respiring Prokaryote.

    NASA Astrophysics Data System (ADS)

    Baesman, S. M.; Oremland, R. S.

    2007-12-01

    Previous investigations on the dissimilatory reduction of Te-oxyanions have been constrained by the inhibtory effects of circa 1.0 mM concentrations of either Te(IV) or Te(VI) upon growth of established cultures. Therefore we initiated new enrichments using anoxic Mono Lake mud supplemented with 10 mM Te(IV) as the electron acceptor and lactate as the electron donor. Sediments turned black with time owing to the formation of Te(0), microscopic examination of which confirmed the presence of both shards, rosettes, and nanospheres of Te(0). The enrichment was subcultured several times in liquid medium and then streaked onto solid medium and incubated in an anaerobic chamber. Isolated black colonies were re-streaked several times, and thence inoculated into liquid medium. However, growth in liquid medium required the presence of a small amount of solid phase, which included a plug of either agar, phytagel, or glass beads. Growth resulted in oxidation of lactate to acetate, formate and CO2 with the reduction of Te(IV) to Te(0). The isolate, strain MLTeJB was a non-motile rod that stained Gram positive, and formed copious exogenous deposits of Te(0) nano-shards and rosettes. Further details on the physiology of this organism will be presented.

  11. Calmodulin Involvement in Stress-Activated Nuclear Localization of Albumin in JB6 Epithelial Cells.

    SciTech Connect

    Weber, Thomas J.; Negash, Sewite; Smallwood, Heather S.; Ramos, Kenneth S.; Thrall, Brian D.; Squier, Thomas C.

    2004-06-15

    We report that in response to oxidative stress, albumin is translocated to the nucleus where it binds in concert with known transcription factors to an antioxidant response element (ARE), which controls the expression of glutathione-S-transferase and other antioxidant enzymes, functioning to mediate adaptive cellular responses. To investigate the mechanisms underlying this adaptive cell response, we have identified linkages between calcium signaling and the nuclear translocation of albumin in JB6 epithelial cells. Under resting conditions, albumin and the calcium regulatory protein, calmodulin (CaM), co-immunoprecipitate using antibodies against either protein, indicating a tight association. Calcium activation of CaM disrupts the association between CaM and albumin, suggesting that transient increases in cytosolic calcium levels function to mobilize intracellular albumin to facilitate its translocation into the nucleus. Likewise, nuclear translocation of albumin is induced by exposure of cells to hydrogen peroxide or a phorbol ester, indicating a functional linkage between reactive oxygen species, calcium, and PKC-signaling pathways. Inclusion of an antioxidant enzyme (i.e., superoxide dismutase) blocks nuclear translocation, suggesting that the oxidation of sensitive proteins functions to coordinate the adaptive cellular response. These results suggest that elevated calcium transients, and associated increases in reactive oxygen species, contribute to adaptive cellular responses through the mobilization and nuclear translocation of cellular albumin to mediate the transcriptional regulation of antioxidant responsive elements.

  12. Purification and characterization of the extracellular alpha-amylase from Streptococcus bovis JB1.

    PubMed

    Freer, S N

    1993-05-01

    The extracellular alpha-amylase (1,4-alpha-D-glucanglucanohydrolase; EC 3.2.1.1) from maltose-grown Streptococcus bovis JB1 was purified to apparent homogeneity by ion-exchange chromatography (Mono Q). The enzyme had an isoelectric point of 4.50 and an apparent molecular mass of 77,000 Da, as estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The enzyme was rich in acidic and hydrophobic amino acids. The 15-amino-acid NH2-terminal sequence was 40% homologous with the Bacillus subtilis saccharifying alpha-amylase and 27% homologous with the Clostridium acetobutylicum alpha-amylase. alpha-Amylase activity on soluble starch was optimal at pH 5.0 to 6.0. The enzyme was relatively stable between pH 5.5 and 8.5 and at temperatures below 50 degrees C. When soluble potato starch was used as the substrate, the enzyme had a Km of 0.88 mg.ml-1 and a kcat of 2,510 mumol of reducing sugar.min-1.mg of protein-1. The enzyme exhibited neither pullulanase nor dextranase activity and was 40 to 70% as active on amylopectin as on amylose. The major end products of amylose hydrolysis were maltose, maltotriose, and maltotetraose. PMID:8517735

  13. Shot noise in quantum dots in presence of Fano and Dicke effects in Kondo regime

    NASA Astrophysics Data System (ADS)

    Orellana, Pedro; Cortes, Natalia; Apel, Victor

    The quantum dots allow studying systematically quantum-interference effects as Fano and Dicke effects due to the possibility of continuous tuning the relevant parameters governing the properties of these resonances, in equilibrium and nonequilibrium regimes. The condition for the Fano resonance is the existence of two scattering channels: a discrete level and a broad continuum band. On the other hand, the electronic version of the Dicke effect is analogous to the Dicke effect in optics, which takes place in the spontaneous emission of two closely-lying atoms radiating a photon into the same environment. In quantum dots this effect is due to quantum interference in the passage of an electron through two closely lying resonant states of the quantum dots coupled to common leads. In this work, we present a systematic investigation of the influence of the Dicke effect on shot-noise and Fano factor in a cross-shaped quantum dot array. The relevant quantities are obtained by the non-equilibrium Green's function technique. Our results show that at zero temperature, the electrical current, shot-noise and Fano factor exhibit characteristics of the Dicke effect. This work was partially supported by FONDECYT under Grant 140571.

  14. Applicability of Henry's Law to helium solubility in olivine

    NASA Astrophysics Data System (ADS)

    Jackson, C.; Parman, S. W.; Kelley, S. P.; Cooper, R. F.

    2013-12-01

    Applicability of Henry's Law to helium solubility in olivine We have experimentally determined helium solubility in San Carlos olivine across a range of helium partial pressures (PHe) with the goal of quantifying how noble gases behave during partial melting of peridotite. Helium solubility in olivine correlates linearly with PHe between 55 and 1680 bar. This linear relationship suggests Henry's Law is applicable to helium dissolution into olivine up to 1680 bar PHe, providing a basis for extrapolation of solubility relationships determined at high PHe to natural systems. This is the first demonstration of Henry's Law for helium dissolution into olivine. Averaging all the data of the PHe series yields a Henry's coefficient of 3.8(×3.1)×10-12 mol g-1 bar-1. However, the population of Henry's coefficients shows a positive skew (skewness = 1.17), i.e. the data are skewed to higher values. This skew is reflected in the large standard deviation of the population of Henry's coefficients. Averaging the median values from each experiment yields a lower Henry's coefficient and standard deviation: 3.2(× 2.3)×10-12 mol g-1 bar-1. Combining the presently determined helium Henry's coefficient for olivine with previous determinations of helium Henry's coefficients for basaltic melts (e.g. 1) yields a partition coefficient of ~10-4. This value is similar to previous determinations obtained at higher PHe (2). The applicability of Henry's Law here suggests helium is incorporated onto relatively abundant sites within olivine that are not saturated by 1680 bar PHe or ~5×10-9 mol g-1. Large radius vacancies, i.e. oxygen vacancies, are energetically favorable sites for noble gas dissolution (3). However, oxygen vacancies are not abundant enough in San Carlos olivine to account for this solubility (e.g. 4), suggesting the 3x10-12 mol g-1 bar-1 Henry's coefficient is associated with interstitial dissolution of helium. Helium was dissolved into olivine using an externally heated pressure vessel (Brown University). The starting materials were prepared by cutting gem-quality San Carlos olivine (~Fo90) into small blocks (~4×2×1 mm) using a diamond wafering blade saw and polishing with alumina slurries and colloidal silica. Analysis was completed by laser ablation-mass spectrometry using a 193 nm excimer laser and a MAP 215-50 specifically tuned for He (Open University, UK). Laser ablation pit depth varied from 2 to 40 μm, and no correlation between pit depth and [He] is observed after accounting for variations PHe across the different experiments. This lack of correlation indicates a close approach to equilibrium was achieved over the experimental durations. Two analyses yielded spuriously high [He] (>3 std. dev. from the population mean, n = 85), and these analyses were not used to calculate Henry's coefficients. The two spuriously high analyses, in combination with the right skew of Henry's coefficients calculated from individual data points, suggests gem-quality San Carlos olivine contains volumes with anomalously high helium solubility. The nature of these volumes is currently under investigation. However, despite their presence, helium is still highly incompatible in olivine during partial melting. [1] Lux GCA 1987 [2] Heber et al. GCA 2007 [3] Shcheka & Keppler Nature 2012 [4] Walker et al. PEPI 2009

  15. NOTE: Some power-law cosmological solutions derived from the 5D Brans-Dicke vacuum theory

    NASA Astrophysics Data System (ADS)

    Lee, Tae Hoon

    2009-07-01

    We solve vacuum field equations in five-dimensional Brans-Dicke gravity to find power-law growth for the cosmological scale factor, with the range of its parameter values extended by the Brans-Dicke field. We discuss its implications for the onset of late-time cosmic acceleration.

  16. A novel chimeric prophage vB_LdeS-phiJB from commercial Lactobacillus delbrueckii subsp. bulgaricus.

    PubMed

    Guo, Tingting; Zhang, Chenchen; Xin, Yongping; Xin, Min; Kong, Jian

    2016-05-01

    Prophage vB_LdeS-phiJB (phiJB) was induced by mitomycin C and UV radiation from the Lactobacillus delbrueckii subsp. bulgaricus SDMCC050201 isolated from a Chinese yoghurt sample. It has an isometric head and a non-contractile tail with 36,969 bp linear double-stranded DNA genome, which is classified into the group a of Lb. delbrueckii phages. The genome of phiJB is highly modular with functionally related genes clustered together. Unexpectedly, there is no similarity of its DNA replication module to any phages that have been reported, while it consists of open-reading frames homologous to the proteins of Lactobacillus strains. Comparative genomic analysis indicated that its late gene clusters, integration/lysogeny modules and DNA replication module derived from different evolutionary ancestors and integrated into a chimera. Our results revealed a novel chimeric phage of commercial Lb. delbrueckii and will broaden the knowledge of phage diversity in the dairy industry. PMID:26831651

  17. Bioremediation of Petrochemical Wastewater Containing BTEX Compounds by a New Immobilized Bacterium Comamonas sp. JB in Magnetic Gellan Gum.

    PubMed

    Jiang, Bei; Zhou, Zunchun; Dong, Ying; Wang, Bai; Jiang, Jingwei; Guan, Xiaoyan; Gao, Shan; Yang, Aifu; Chen, Zhong; Sun, Hongjuan

    2015-05-01

    In this study, we investigated the bioremediation of petrochemical wastewater containing BTEX compounds by immobilized Comamonas sp. JB cells. Three kinds of magnetic nanoparticles were evaluated as immobilization supports for strain JB. After comparison with Fe3O4 and a-Fe2O3 nanoparticles, r-Fe2O3 nanoparticle was selected as the optimal immobilization support. The highest biodegradation activity of r-Fe2O3-magnetically immobilized cells was obtained when the concentration of r-Fe2O3 nanoparticle was 120 mg L(-1). Additionally, the recycling experiments demonstrated that the degradation activity of r-Fe2O3-magnetically immobilized cells was still high and led to less toxicity than untreated wastewater during the eight recycles. qPCR suggested the concentration of strain JB in r-Fe2O3-magnetically immobilized cells was evidently increased after eight cycles of degradation experiments. These results supported developing efficient biocatalysts using r-Fe2O3-magnetically immobilized cells and provided a promising technique for improving biocatalysts used in the bioremediation of not only petrochemical wastewater but also other hazardous wastewater. PMID:25837023

  18. Exact solvability, non-integrability, and genuine multipartite entanglement dynamics of the Dicke model

    NASA Astrophysics Data System (ADS)

    He, Shu; Duan, Liwei; Chen, Qing-Hu

    2015-04-01

    In this paper, the finite-size Dicke model of arbitrary number of qubits is solved analytically in a unified way within extended coherent states. For the N=2k or 2k-1 Dicke models (k is an integer), the G-function, which is only an energy dependent k× k determinant, is derived in a transparent manner. The regular spectrum is completely and uniquely given by stable zeros of the G-function. The closed-form exceptional eigenvalues are also derived. The level distribution controlled by the pole structure of the G-functions suggests non-integrability for N\\gt 1 model at any finite coupling in the sense of recent criteria found in the literature. A preliminary application to the exact dynamics of genuine multipartite entanglement in the finite-N Dicke model is presented using the obtained exact solutions.

  19. Modified Brans-Dicke theory with space-time anisotropic parameters

    SciTech Connect

    Moon, Taeyoon; Oh, Phillial E-mail: ploh@skku.edu

    2014-03-01

    We consider the ADM formalism of the Brans-Dicke theory and propose a space-time anisotropic extension of the theory by introducing five free parameters. We find that the resulting theory reveals many interesting aspects which are not present in the original BD theory. We first discuss the ghost instability and strong coupling problems which are present in the gravity theory without the full diffeomorphism symmetry and show that they can be avoided in a region of the parameter space. We also perform the post-Newtonian approximation and show that the constraint of the Brans-Dicke parameter ω{sub BD} being large to be consistent with the solar system observations could be evaded in the extended theory. We also discuss that accelerating Universe can be achieved without the need of the potential for the Brans-Dicke scalar.

  20. Dicke superradiance as nondestructive probe for the state of atoms in optical lattices

    NASA Astrophysics Data System (ADS)

    Brinke, Nicolai ten; Schützhold, Ralf

    2016-05-01

    We present a proposal for a probing scheme utilizing Dicke superradiance to obtain information about ultracold atoms in optical lattices. A probe photon is absorbed collectively by an ensemble of lattice atoms generating a Dicke state. The lattice dynamics (e.g., tunneling) affects the coherence properties of that Dicke state and thus alters the superradiant emission characteristics - which in turn provides insight into the lattice (dynamics). Comparing the Bose-Hubbard and the Fermi-Hubbard model, we find similar superradiance in the strongly interacting Mott insulator regime, but crucial differences in the weakly interacting (superfluid or metallic) phase. Furthermore, we study the possibility to detect whether a quantum phase transition between the two regimes can be considered adiabatic or a quantum quench.

  1. Late time cosmic acceleration from vacuum Brans-Dicke theory in 5D

    NASA Astrophysics Data System (ADS)

    Ponce de Leon, J.

    2010-05-01

    We show that the scalar-vacuum Brans-Dicke equations in 5D are equivalent to Brans-Dicke theory in 4D with a self-interacting potential and an effective matter field. The cosmological implication, in the context of FRW models, is that the observed accelerated expansion of the universe comes naturally from the condition that the scalar field is not a ghost, i.e. ω > -3/2. We find an effective matter-dominated 4D universe which shows accelerated expansion if -3/2 < ω < -1. We study the question of whether accelerated expansion can be made compatible with large values of ω, within the framework of a 5D scalar-vacuum Brans-Dicke theory with variable, instead of constant, parameter ω. In this framework, and based on a general class of solutions of the field equations, we demonstrate that accelerated expansion is incompatible with large values of ω.

  2. Modified Brans-Dicke gravitational theory with nonzero divergence of the energy-momentum tensor

    NASA Technical Reports Server (NTRS)

    Smalley, L. L.

    1974-01-01

    The Brans-Dicke theory of gravitation is modified by assuming that the divergence of the energy-momentum tensor is proportional to the covariant derivative of the scalar curvature. No ad hoc additions to the usual Brans-Dicke field equations are required as in Rastall's modification of the Einstein theory or as in the steady-state theories, of which this is a natural possibility. Three parameters emerge from the theory - namely, the unnormalized gravitational constant, the usual Brans-Dicke parameter, and the proportionality constant. In the post-Newtonian approximation, these parameters can be fixed by experiment. However, there exists a certain choice of the parameters for which the theory reduces to an Einstein theory with constant scalar curvature.

  3. Antibacterial Activity of Pseudonocardia sp. JB05, a Rare Salty Soil Actinomycete against Staphylococcus aureus

    PubMed Central

    Jafari, Nesa; Behroozi, Reza; Farajzadeh, Davoud; Farsi, Mohammad; Akbari-Noghabi, Kambiz

    2014-01-01

    Staphylococcus aureus is a Gram-positive bacterium that causes many harmful and life-threatening diseases. Some strains of this bacterium are resistant to available antibiotics. This study was designed to evaluate the ability of indigenous actinomycetes to produce antibacterial compounds against S. aureus and characterize the structure of the resultant antibacterial compounds. Therefore, a slightly modified agar well diffusion method was used to determine the antibacterial activity of actinomycete isolates against the test microorganisms. The bacterial extracts with antibacterial activity were fractionated by silica gel and G-25 sephadex column chromatography. Also, the active fractions were analyzed by thin layer chromatography. Finally, the partial structure of the resultant antibacterial compound was characterized by Fourier transform infrared spectroscopy. One of the isolates, which had a broad spectrum and high antibacterial activity, was designated as Pseudonocardia sp. JB05, based on the results of biochemical and 16S rDNA gene sequence analysis. Minimum inhibitory concentration for this bacterium was 40 AU mL−1 against S. aureus. The antibacterial activity of this bacterium was stable after autoclaving, 10% SDS, boiling, and proteinase K. Thin layer chromatography, using anthrone reagent, showed the presence of carbohydrates in the purified antibacterial compound. Finally, FT-IR spectrum of the active compound illustrated hydroxyl groups, hydrocarbon skeleton, and double bond of polygenic compounds in its structure. To the best of our knowledge, this is the first report describing the efficient antibacterial activity by a local strain of Pseudonocardia. The results presented in this work, although at the initial stage in bioactive product characterization, will possibly contribute toward the Pseudonocardia scale-up for the production and identification of the antibacterial compounds. PMID:25202705

  4. {gamma} parameter and Solar System constraint in chameleon-Brans-Dicke theory

    SciTech Connect

    Saaidi, Kh.; Mohammadi, A.; Sheikhahmadi, H.

    2011-05-15

    The post Newtonian parameter is considered in the chameleon-Brans-Dicke model. In the first step, the general form of this parameter and also effective gravitational constant is obtained. An arbitrary function for f({Phi}), which indicates the coupling between matter and scalar field, is introduced to investigate validity of solar system constraint. It is shown that the chameleon-Brans-Dicke model can satisfy the solar system constraint and gives us an {omega} parameter of order 10{sup 4}, which is in comparable to the constraint which has been indicated in [19].

  5. 4. PHOTOGRAPHIC PORTRAIT OF HENRY OSSAWA TANNER Photocopy of pre1930 ...

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

    4. PHOTOGRAPHIC PORTRAIT OF HENRY OSSAWA TANNER Photocopy of pre-1930 photograph, courtesy of Archives of American Art, Smithsonian Institution, Washington, D. C. - Henry O. Tanner House, 2908 West Diamond Street, Philadelphia, Philadelphia County, PA

  6. Henry Giroux on Democracy Unsettled: From Critical Pedagogy to the War on Youth--An Interview

    ERIC Educational Resources Information Center

    Peters, Michael A.

    2012-01-01

    This interview conducted with Henry Giroux begins by probing Henry's childhood, upbringing and undergraduate years to discover where his sense of social justice took hold. It also questions Henry about his working-class background and the major influences on his thought, including his relationships with Paulo Freire and Howard Zinn. The interview

  7. Henry Giroux on Democracy Unsettled: From Critical Pedagogy to the War on Youth--An Interview

    ERIC Educational Resources Information Center

    Peters, Michael A.

    2012-01-01

    This interview conducted with Henry Giroux begins by probing Henry's childhood, upbringing and undergraduate years to discover where his sense of social justice took hold. It also questions Henry about his working-class background and the major influences on his thought, including his relationships with Paulo Freire and Howard Zinn. The interview…

  8. 22. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    22. Historic American Buildings Survey Photographed by Henry F. Withey June 1936 STONE CHURCH, ARCHES OF SANCTUARY AND WEST TRANSEPT - Mission San Juan Capistrano, Stone Church, Olive Street, between U.S. Highway 101 & Main Street, San Juan Capistrano, Orange County, CA

  9. A Teacher's Guide for William Shakespeare's "Henry V."

    ERIC Educational Resources Information Center

    WGBH-TV, Boston, MA.

    This teacher's guide for William Shakespeare's play "Henry V" is designed to accompany the Kenneth Branagh Masterpiece Theater film production of the play, and to help teachers use the film in a variety of ways. The guide includes pre-viewing background information, five teaching units, and a pullout poster for classroom display. The guide begins…

  10. 16. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    16. Historic American Buildings Survey Photographed by Henry F. Withey June 1936 STONE CHURCH, SANCTUARY EAST WALL (LOOKING EAST) - Mission San Juan Capistrano, Stone Church, Olive Street, between U.S. Highway 101 & Main Street, San Juan Capistrano, Orange County, CA

  11. Lou Henry Hoover: The Independent Girl. A Curriculum Guide.

    ERIC Educational Resources Information Center

    Kurtz, Alice K.

    This curriculum guide provides ideas for teaching about Lou Henry Hoover, wife of President Herbert Hoover. The book examines personal data, as well as the social milieu of the times of the Hoover's. Teaching suggestions accompany the chapters. There are 12 chapters in the guide: (1) "Timeline, Biographical Sketch, and Photographs of Lou Henry…

  12. The Henry semianalytical solution for saltwater intrusion with reduced dispersion

    NASA Astrophysics Data System (ADS)

    Zidane, Ali; Younes, Anis; Huggenberger, Peter; Zechner, Eric

    2012-06-01

    The Henry semianalytical solution for salt water intrusion is widely used for benchmarking density dependent flow codes. The method consists of replacing the stream function and the concentration by a double set of Fourier series. These series are truncated at a given order and the remaining coefficients are calculated by solving a highly nonlinear system of algebraic equations. The solution of this system is often subject to substantial numerical difficulties. Previous works succeeded to provide semianalytical solutions only for saltwater intrusion problems with unrealistic large amount of dispersion. In this work, different truncations for the Fourier series are tested and the Levenberg-Marquardt algorithm, which has a quadratic rate of convergence, is applied to calculate their coefficients. The obtained results provide semianalytical solutions for the Henry problem in the case of reduced dispersion coefficients and for two freshwater recharge values: the initial value suggested by Henry (1964) and the reduced one suggested by Simpson and Clement (2004). The developed semianalytical solutions are compared against numerical results obtained by using the method of lines and advanced spatial discretization schemes. The obtained semianalytical solutions improve considerably the worthiness of the Henry problem and therefore, they are more suitable for testing density dependent flow codes.

  13. The Failed Educations of John Stuart Mill and Henry Adams.

    ERIC Educational Resources Information Center

    Crossley, Robert

    1979-01-01

    Analyzes and contrasts Mill's "Autobiography" and Adams'"The Education of Henry Adams" in order to present two approaches to the nature of education and of failure. Maintains that their perspectives may serve as catalysts and cautions for contemporary theories of education and its utility and relevance. (CAM)

  14. The Transformative Intellectual: An Examination of Henry Giroux's Ethics

    ERIC Educational Resources Information Center

    Kashani, Tony

    2012-01-01

    This article explores Henry Giroux's contributions to critical pedagogy. The author demonstrates how Giroux, as a public intellectual, has found his Ethics in the right place. The author further argues that Giroux's Ethics of virtue are present not only in the public person but also in his transformative writing.

  15. 6. Historic American Buildings Survey Photographed by Henry F. Withey ...

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

    6. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SOAP FACTORY & SMITHY (FROM S. E. END OF SOAP FACTORY) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

  16. 4. Historic American Buildings Survey Photocopy, Henry Austin's Drawing c. ...

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

    4. Historic American Buildings Survey Photocopy, Henry Austin's Drawing c. 1845 Restricted: Permission for use must be obtained in writing from Beinecke Rare Book and Manuscript Library Yale University, New Haven, Conn. - Grove Street Cemetery Entrance, 227 Grove Street, New Haven, New Haven County, CT

  17. 10. Historic American Buildings Survey Photocopy, Henry Austin's Drawing EAST ...

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

    10. Historic American Buildings Survey Photocopy, Henry Austin's Drawing EAST SIDE ELEVATION Restricted: Permission for use must be obtained in writing from the Beinecke Rare Book and Manuscript Library Yale University, New Haven, Conn. - Willis Bristol House, 584 Chapel Street, New Haven, New Haven County, CT

  18. 7. Historic American Buildings Survey Photographed by Henry F. Withey, ...

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

    7. Historic American Buildings Survey Photographed by Henry F. Withey, MaY 1937 SHOP RUINS (DETAIL OF SOAP OVEN) - Mission San Juan Capistrano, Industrial Shops, Olive Street, between U.S. Highway 101 & Main Street, San Juan Capistrano, Orange County, CA

  19. Henry David Thoreau and Martin Luther King, Jr. Lesson Plan.

    ERIC Educational Resources Information Center

    Powell, Brent

    1995-01-01

    Presents a five-lesson, high school instructional unit on the ideas and activities of Henry David Thoreau and Martin Luther King, Jr. Includes student objectives, step-by-step instructional procedures, and discussion questions. Provides quotations by Thoreau and King. (CFR)

  20. Henry's law constants for dimethylsulfide in freshwater and seawater

    NASA Technical Reports Server (NTRS)

    Dacey, J. W. H.; Wakeham, S. G.; Howes, B. L.

    1984-01-01

    Distilled water and several waters of varying salinity were subjected, over a 0-32 C temperature range, to measurements for Henry's law constants for dimethylsulfide. Values for distilled water and seawater of the solubility parameters A and C are obtained which support the concept that the concentration of dimethylsulfide in the atmosphere is far from equilibrium with seawater.

  1. Challenging Texts: Teaching Deliberately--Reading Henry David Thoreau's "Walden"

    ERIC Educational Resources Information Center

    Davis, Andrea

    2011-01-01

    One of the more difficult 19th-century American texts for high school students to read is undoubtedly Henry David Thoreau's "Walden." His erudite allusions, often page-long sentences, and sophisticated sense of the ironic initially leave many students cold. Still, the author encourages them to read amid the din of a cultural cacophony that shouts…

  2. 15. Photocopy of map, drawn by Henry Hagey, circa 1900 ...

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

    15. Photocopy of map, drawn by Henry Hagey, circa 1900 (from Willing Inhabitants, original in possession of author, Joyce Munro). FRANCONIA TOWNSHIP MAP. BRIDGE LOCATION IN BOTTOM CENTER - Allentown Road Bridge, Spanning Skippack Creek on Allentown Road, Franconia, Montgomery County, PA

  3. Portrait of a confederate secret agent: Henry A. Parr, DDS.

    PubMed

    Hyson, J M; Swanson, B Z

    1996-07-01

    Dr. Henry Albert Parr wore many faces during his career beginning with his Civil War service as a Confederate secret service agent and ending as a presidential dentist. How he played the roles in between as a pirate, accused murderer, pharmacist, inventor, and dental educator is a real odyssey--and worthy of documentation. PMID:9459850

  4. 1. Historic American Buildings Survey Photographed by Henry F. Withey, ...

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

    1. Historic American Buildings Survey Photographed by Henry F. Withey, June 1936 FOUNTAIN IN A COURT, AND WEST WALL OF SERRA'S CHURCH - Mission San Juan Capistrano, Fountain, Olive Street, between U.S. Highway 101 & Main Street, San Juan Capistrano, Orange County, CA

  5. Pursuing "Moby-Dick" in the Classroom, the Museum, Back in the Classroom, and Beyond.

    ERIC Educational Resources Information Center

    Wallace, Robert K.; Zlatkin, Aaron; Hixson, Lindsay; Kallmeyer, Robert J.; Sekowski, Kristen; Brock, Gina R.; Gallagher, Michael; Fletcher, William Ryan

    1997-01-01

    Describes a university course that explored the novel "Moby Dick" by Herman Melville and its relation to art highlighting the two student initiatives. Provides the opening statements from each of the 12 students at the National Association for Humanities Education Convention from their presentation on the course where they each related their…

  6. Classical and quantum solutions in Brans-Dicke cosmology with a perfect fluid

    NASA Astrophysics Data System (ADS)

    Paliathanasis, Andronikos; Tsamparlis, Michael; Basilakos, Spyros; Barrow, John D.

    2016-02-01

    We consider the application of group invariant transformations in order to constrain a flat isotropic and homogeneous cosmological model, containing a Brans-Dicke scalar field and a perfect fluid with a constant equation of state parameter w , where the latter is not interacting with the scalar field in the gravitational action integral. The requirement that the Wheeler-DeWitt equation be invariant under one-parameter point transformations provides us with two families of power-law potentials for the Brans-Dicke field, in which the powers are functions of the Brans-Dicke parameter ωBD and the parameter w . The existence of the Lie symmetry in the Wheeler-DeWitt equation is equivalent to the existence of a conserved quantity in field equations and with oscillatory terms in the wave function of the Universe. This enables us to solve the field equations. For a specific value of the conserved quantity, we find a closed-form solution for the Hubble factor, which is equivalent to a cosmological model in general relativity containing two perfect fluids. This provides us with different models for specific values of the parameters ωBD , and w . Finally, the results hold for the specific case where the Brans-Dicke parameter ωBD is zero, that is, for the O'Hanlon massive dilaton theory and, consequently, for f (R ) gravity in the metric formalism.

  7. Teaching Psychology and Literature: Melancholia as Motivation in the Novels of Dick Francis

    ERIC Educational Resources Information Center

    Wagner, Elaine

    2010-01-01

    Teaching literature from a psychological perspective provides a basis for the study and analysis of human motivation and behavior, as psychology and literature make mutual contributions to the study of both disciplines. Melancholia is a recurring theme in the novels of Dick Francis, and the first-person accounts of despair and depression are…

  8. Chameleonic Generalized Brans-Dicke model and late-time acceleration

    NASA Astrophysics Data System (ADS)

    Farajollahi, H.; Farhoudi, M.; Salehi, A.; Shojaie, H.

    2012-01-01

    In this paper we consider Chameleonic Generalized Brans-Dicke Cosmology in the framework of FRW universes. The bouncing solution and phantom crossing is investigated for the model. Two independent cosmological tests: Cosmological Redshift Drift (CRD) and distance modulus are applied to test the model with the observation.

  9. Quantum phase transitions and spontaneous symmetry-breaking in Dicke model

    SciTech Connect

    Puebla, R.; Retamosa, J.

    2013-06-10

    A method to find the Excited-States Quantum Phase Transitions (ESQPT's) from paritysymmetry in the Dicke model is studied and presented. This method allows us to stablish a critical energy where ESQPT's take places, and divides the whole energy spectrum in two regions with different properties.

  10. Possible observational manifestations of wormholes in the Brans-Dicke theory

    SciTech Connect

    Alexeyev, S. O. Rannu, K. A.; Gareeva, D. V.

    2011-10-15

    The energy flux emitted during the accretion of matter onto a wormhole in the Brans-Dicke theory has been calculated. This characteristic is compared with its values calculated previously for wormholes in general relativity and for a Schwarzschild black hole.

  11. Obituary: Roy Henry Garstang (1925-2009)

    NASA Astrophysics Data System (ADS)

    Malville, J.

    2011-12-01

    Roy Henry Garstang 84 passed away on November 1, 2009 in Boulder Colorado. He was born in Southport, England in September of 1925 to Percy Brocklehurst and Eunice (Gledhill) Garstang. He won a scholarship to Caius College in Cambridge University. Because it was wartime, he could spend only two years at his studies. However, he managed to complete three years of required work during that time, and then spent 1945-46 as a Junior Scientific Officer at the Royal Aircraft Establishment at Farnborough. He received his BA in 1946 from Cambridge, his MA in 1950, and his PhD in Mathematics in 1954, with a thesis: "Atomic Transitions in Astrophysics," working under D. R. Hartree. He also received a ScD from Cambridge in Physics and Chemistry in 1983. He married Ann in August 1959. She and two daughters, Jennifer and Susan, survive him. While still pursuing his PhD, Roy Garstang served as a Research Associate at the Yerkes Observatory, from 1951-1952, working under Subrahmanyan Chandrasekhar. During that time he continued with his own calculations of atomic structure and transition probabilities, although these were not part of Chandra's research interests. After earning his PhD, he went to teach at the University of London, where he also served as the Assistant Director of the University of London Observatory (1959-1964). He was editor of "The Observatory" Magazine form 1953-1960. The continuing theme of this research was to help meet the needs of astrophysicists for atomic data. In 1964, he left England for the United States, where he joined the faculty at the University of Colorado, Boulder, where he would remain for the rest of his professional career. It was entirely fitting, considering his interest in performing calculations of interest to astrophysicists, that soon after arriving in Boulder he was appointed Chairman of JILA - Joint Institute for Laboratory Astrophysics (1966-1967). He was Director of the Division of Physics and AstroGeophysics (1979-80), acting Director of the Fiske Planetarium (1980-81), Chair of the Faculty Assembly (1988-1989) and recipient of the Faculty Assembly Excellence in Service Award in 1990. During his career Garstang was active in a number of professional organizations, including the British Astronomical Association (two-term Vice President) and Sigma Xi for which he was the Secretary of the University of Colorado for 20 years. He was a Fellow of the American Association for the Advancement of Science, the American Physical Society the American Physical Society, the Optical Society of America, the Royal Astronomical Society, the Institute of Physics (British), the Royal Statistical Society, and the Cambridge Philosophical Society. He published more than 150 articles in scientific journals. Roy Garstang was the consummate resource for atomic calculations needed by the astrophysical community. His first scientific paper published when he was a graduate student in 1950 was "Some line strengths for ionized neon" (Monthly Notices of the Royal Astronomical Society 110: 612-614) and some 55 papers later, in 1981 he published calculations on neutral technetium "Oscillator strengths for neutral technetium" (PASP 93:641. 1981). A continuing interest of his was forbidden transitions, such as are important in the solar corona, aurora, planetary nebula, and nova shells. He made important calculations of the energy levels and spectra of highly ionized species of iron and worked extensively on magnetic quadrupole radiation, which proved to be important in the solar corona. Garstang also studied the effects of strong magnetic field on atomic spectra, ranging from the thousand gauss fields of sunspots to megagauss fields of white dwarfs. He was internationally recognized for his work on light pollution, which turned into a major course change for him, becoming his primary research interest after 1984. Between 1984 and 2007, he published 40 scientific papers of which 37 concerned sky brightness in one way or another. He constructed and modified a light pollution model (Dust and Light Pollution, PASP 103:1109 (1991)) which included an ozone layer, scattering of light by molecules and aerosols with improved variations with altitude, curvature of the earth, and a dust layer of dust either volcanic or desert origin. His models have become the standard for the field and have successfully reproduced the variation of sky glow with position in the sky and with distance from light sources. His models raised awareness of the factors contributing to light pollution at observatory sites and led to efforts to reduce urban light pollution. Garstang played an important role in the teaching program of the CU Bolder Astrophysics and Planetary Science department, teaching large introductory classes, laboratory and observatory sessions as well as upper division classes and graduate classes. His appetite for teaching undergraduate can be appreciated by some of the laboratory exercise he invented such as measuring the solar constant by the rate of rise of temperature inside closed car ("How hot does your parked car become?" AAPT Announce 18:139 (1988)). In 1994 he published a letter in AmJPh about a continuing discussion of SI units. The letter reveals much about his approach to life and physics. "I have done a lot of work during the last 15 years on light pollution. If you want to reach lighting engineers you have to talk about lumens, lux, foot-candles, and whatever. If you do not, your reward is simply not to be understood. Photons per square meter per second per steradian means nothing to them. The problem is doubly compounded because astronomers have their own traditional units, such as number of tenth magnitude stars per square degree, magnitudes per square arc second, and so on, which are equally obscure to the engineering community. By all means work in metric, but be prepared to quote your main results in language understood by the consumers of your results. In fact, a little common sense is what we need."

  12. DnaJB6 is present in the core of Lewy bodies and is highly up-regulated in parkinsonian astrocytes.

    PubMed

    Durrenberger, P F; Filiou, M D; Moran, L B; Michael, G J; Novoselov, S; Cheetham, M E; Clark, P; Pearce, R K B; Graeber, M B

    2009-01-01

    DnaJ/Hsp40 chaperones determine the activity of Hsp70s by stabilizing their interaction with substrate proteins. We have predicted, based on the in silico analysis of a brain-derived whole-genome transcriptome data set, an increased expression of DnaJ/Hsp40 homologue, subfamily B, member 6 (DnaJB6) in Parkinson's disease (PD; Moran et al. [2006] Neurogenetics 7:1-11). We now show that DnaJB6 is a novel component of Lewy bodies (LBs) in both PD substantia nigra and PD cortex and that it is strongly up-regulated in parkinsonian astrocytes. The presence of DnaJB6 in the center of LBs suggests an early and direct involvement of this chaperone in the neuronal disease process associated with PD. The strong concomitant expression of DnaJB6 in astrocytes emphasizes the involvement of glial cells in PD and could indicate a route for therapeutic intervention. Extracellular alpha-synuclein originating from intravesicular alpha-synuclein is prone to aggregation and the potential source of extracellular aggregates (Lee [2008] J. Mol. Neurosci. 34:17-22). The observed strong expression of DnaJB6 by astrocytes could reflect a protective reaction, so reducing the neuronal release of toxic alpha-synuclein and supporting the astrocyte response in PD might limit the progression of the disease process. PMID:18711724

  13. Human J-protein DnaJB6b Cures a Subset of Saccharomyces cerevisiae Prions and Selectively Blocks Assembly of Structurally Related Amyloids.

    PubMed

    Reidy, Michael; Sharma, Ruchika; Roberts, Brittany-Lee; Masison, Daniel C

    2016-02-19

    Human chaperone DnaJB6, an Hsp70 co-chaperone whose defects cause myopathies, protects cells from polyglutamine toxicity and prevents purified polyglutamine and Aβ peptides from forming amyloid. Yeast prions [URE3] and [PSI(+)] propagate as amyloid forms of Ure2 and Sup35 proteins, respectively. Here we find DnaJB6-protected yeast cells from polyglutamine toxicity and cured yeast of both [URE3] prions and weak variants of [PSI(+)] prions but not strong [PSI(+)] prions. Weak and strong variants of [PSI(+)] differ only in the structural conformation of their amyloid cores. In line with its anti-prion effects, DnaJB6 prevented purified Sup35NM from forming amyloids at 37 °C, which produce predominantly weak [PSI(+)] variants when used to infect yeast, but not at 4 °C, which produces mostly strong [PSI(+)] variants. Thus, structurally distinct amyloids composed of the same protein were differentially sensitive to the anti-amyloid activity of DnaJB6 both in vitro and in vivo. These findings have important implications for strategies using DnaJB6 as a target for therapy in amyloid disorders. PMID:26702057

  14. Sarcophilia, cremation and Sir Henry Thompson (1820-1904).

    PubMed

    Jellinek, E H

    2009-11-01

    Sarcophilia, a neologism for an attachment to human remains, is set in a review of the history of the disposal of the dead. The ancient practice of cremation was relaunched late in the 19th century by the urological surgeon cum social reformer Sir Henry Thompson. He was stimulated by Edwin Chadwick and Charles Dickens, and by Charles Darwin's observations on the earthworm. Sarcophilia is the reason for the controversial Human Tissue Act of 2004. PMID:20029076

  15. The early education of a Nobel laureate: Henry Dale's schooldays.

    PubMed

    Tansey, E M

    2011-12-20

    This paper examines the early schooling, in London and in Cambridge, of the later Nobel laureate and President of the Royal Society, the physiologist Sir Henry Dale (1875-1968). The influence of key teachers who directed the boy's interest towards science, and the impact of his schooling on his university education and later scientific career, are examined in particular. The significance of the zoologist Edward Butler of Tollington Park College, who taught Dale in his early teenage years, is highlighted. PMID:22332469

  16. Twilight of the gods: John Henry Mackay's Der Unschuldige.

    PubMed

    Kennedy, H

    1993-01-01

    The writings of the Scotch-German John Henry Mackay are important for the early cultural history of the modern gay movement. This article recalls this unjustly neglected anarchist writer and advocate of man/boy love by tracing his biography and pointing out his contacts with others in the movement. His late novella Der Unschuldige is analyzed to show that Mackay has encoded homosexuality there in a unique and individual way. PMID:8113599

  17. In praise of the literary eponym—Henry V sign

    PubMed Central

    Houlihan, C.; Marks, J. Charles

    2013-01-01

    The use of eponyms in medicine is often discouraged. However, the literary eponym should be an exception as it is not linked with many of the difficulties associated with conventional eponyms and offers descriptive brevity and accuracy. Here, we illustrate the point with Henry V sign, which will be familiar to many who have cared for patients in the terminal stage of illness. PMID:23108030

  18. Air-Liquid Partition Coefficient for a Diverse Set of Organic Compounds: Henrys Law Constant in Water and Hexadecane

    EPA Science Inventory

    The SPARC vapor pressure and activity coefficient models were coupled to estimate Henrys Law Constant (HLC) in water and in hexadecane for a wide range of non-polar and polar solute organic compounds without modification to/or additional parameterization of the vapor pressure or...

  19. Henrys Law Constant and Overall Mass Transfer Coefficient for Formaldehyde Emission from Small Water Pools under Simulated Indoor Environmental Conditions

    EPA Science Inventory

    The Henrys law constant (HLC) and the overall mass transfer coefficient are both important parameters for modeling formaldehyde emissions from aqueous solutions. In this work, the apparent HLCs for aqueous formaldehyde solutions were determined in the concentration range from 0....

  20. BOOK REVIEW: Joseph Henry: The Rise of an American Scientist

    NASA Astrophysics Data System (ADS)

    Crawford, Elspeth

    1998-09-01

    Albert Moyer has clearly done his research into the events of Joseph Henry's life. The personal, professional, sociological and scientific aspects have been meticulously detailed throughout and the ordering, as in the chapter headings, is chronological, so that there is some element of each of these aspects in each chapter. This is unfortunately both the strength and the weakness of the biography, as the detail seemed to me to be the most remarkable characteristic of the writing. But, the bigger stories, or the themes, which might have been possible, seemed to get lost. Hence, I found this a book for those who are seriously interested in Joseph Henry; but for those whose interest might be more general, say having an interest in nineteenth century growth of scientific institutions, or wanting to understand the conceptual development of electromagnetism, there seemed to be too much which came from the Henry point of view, rather than locating Henry within his time and context. This is a remark about style, rather than omission of content, as the myriad of details in each paragraph certainly inform the reader about the context. For instance, some sociology of the USA in the nineteenth century could be inferred, say showing how a young man from a modest background might make his way into a professional life, but the information is so particularly a description of Henry's experience that one has to rely on prior knowledge or make assumptions in order to create a sociological perspective. That is, I now know, what happened to Henry, but I do not know if his case was in any sense typical or atypical. Similarly there is information about education in general at that time, and scientific education, research and its publication, as it applied to Henry. The relationships between science in the USA and in Europe have a place, and there is quite a bit of information about the institutions in which Henry worked, particularly Albany Academy, Princeton and the Smithsonian. Henry's marriage and family, and his beliefs are addressed; we hear how his work kept him from his family at times, but also how much they meant to him. And, of course, there are scientific questions and factual information about the field in which he is renowned - electromagnetism. It is hard to find fault with the quantity and breadth of what is offered, and very easy to criticize the way in which it is offered; nevertheless it seems to me that this is a superb record of events, but without the themes or pictures that would make it a biography. Before reading the book, I was acquainted with some of Henry's writing on electromagnetism (researched as part of my own work on Michael Faraday). I looked in vain for the personality whom I had met in a few scientific papers, a person who had written of new experimentation and results, who knew that new theory was needed also, and who, when he could not think of any, said disarmingly, `this part of the investigation, was, for a time, given up almost in despair'. Moyer does not seem to convey this personality whose words engage other people, even at a distance in time. In spite of this severe criticism, the book has an enticing quality, probably best summarized by its introduction. This recounts the quite staggering attendance at Henry's funeral service and the tenor of obituary notices: this man was loved, by many. Hence, while reading, one continually looks for biography which would in some measure account for this loving and high regard. That is, we are given a measure of this man, and then it is as if the nature of the measure remains unknown however often mentioned. Maybe this beginning in a sense creates the disappointment. It would seem that Henry signifies something greater than wide achievements for those who actually knew him or who read his writing. Could this be the willingness to learn and keep trying, to put others' needs in front of his own, to have both modesty and enthusiasm for enquiry, not-knowing as well as knowing, etc? In other words, the humanness which is needed and needs, achievement, is hidden here and there in Moyer's biography. It is a pity that it does not shine above the detail, but it is worth looking for.

  1. Temperature dependencies of Henry's law constants for different plant sesquiterpenes.

    PubMed

    Copolovici, Lucian; Niinemets, Ülo

    2015-11-01

    Sesquiterpenes are plant-produced hydrocarbons with important ecological functions in plant-to-plant and plant-to-insect communication, but due to their high reactivity they can also play a significant role in atmospheric chemistry. So far, there is little information of gas/liquid phase partition coefficients (Henry's law constants) and their temperature dependencies for sesquiterpenes, but this information is needed for quantitative simulation of the release of sesquiterpenes from plants and modeling atmospheric reactions in different phases. In this study, we estimated Henry's law constants (Hpc) and their temperature responses for 12 key plant sesquiterpenes with varying structure (aliphatic, mono-, bi- and tricyclic sesquiterpenes). At 25 °C, Henry's law constants varied 1.4-fold among different sesquiterpenes, and the values were within the range previously observed for monocyclic monoterpenes. Hpc of sesquiterpenes exhibited a high rate of increase, on average ca. 1.5-fold with a 10 °C increase in temperature (Q10). The values of Q10 varied 1.2-fold among different sesquiterpenes. Overall, these data demonstrate moderately high variation in Hpc values and Hpc temperature responses among different sesquiterpenes. We argue that these variations can importantly alter the emission kinetics of sesquiterpenes from plants. PMID:26291755

  2. Reconstructing Henry: Or, Why Everything You Needed to Know about Wilderness Philosophy You Could Have Learned from Henry David Thoreau

    ERIC Educational Resources Information Center

    Glover, Jim

    2006-01-01

    Henry David Thoreau has gotten a bad rap lately. He's been pigeon-holed as a "romantic" by resource managers who do not have a tiny fragment of his wisdom and don't know anything about him. He's been accused of hypocrisy because his cabin at Walden Pond was not, after all, very remote. His wilderness trips, in this age of fly-in mountaineering,…

  3. Human Dendritic Cell DC-SIGN and TLR-2 Mediate Complementary Immune Regulatory Activities in Response to Lactobacillus rhamnosus JB-1

    PubMed Central

    Konieczna, Patrycja; Schiavi, Elisa; Ziegler, Mario; Groeger, David; Healy, Selena; Grant, Ray; O’Mahony, Liam

    2015-01-01

    The microbiota is required for optimal host development and ongoing immune homeostasis. Lactobacilli are common inhabitants of the mammalian large intestine and immunoregulatory effects have been described for certain, but not all, strains. The mechanisms underpinning these protective effects are beginning to be elucidated. One such protective organism is Lactobacillus rhamnosus JB-1 (Lb. rhamnosus JB-1). Lb. murinus has no such anti-inflammatory protective effects and was used as a comparator organism. Human monocyte-derived dendritic cells (MDDCs) were co-incubated with bacteria and analysed over time for bacterial adhesion and intracellular processing, costimulatory molecule expression, cytokine secretion and induction of lymphocyte polarization. Neutralising antibodies were utilized to identify the responsible MDDC receptors. Lb. rhamnosus JB-1 adhered to MDDCs, but internalization and intracellular processing was significantly delayed, compared to Lb. murinus which was rapidly internalized and processed. Lb. murinus induced CD80 and CD86 expression, accompanied by high levels of cytokine secretion, while Lb. rhamnosus JB-1 was a poor inducer of costimulatory molecule expression and cytokine secretion. Lb. rhamnosus JB-1 primed MDDCs induced Foxp3 expression in autologous lymphocytes, while Lb. murinus primed MDDCs induced Foxp3, T-bet and Ror-γt expression. DC-SIGN was required for Lb. rhamnosus JB-1 adhesion and influenced IL-12 secretion, while TLR-2 influenced IL-10 and IL-12 secretion. Here we demonstrate that the delayed kinetics of bacterial processing by MDDCs correlates with MDDC activation and stimulation of lymphocytes. Thus, inhibition or delay of intracellular processing may be a novel strategy by which certain commensals may avoid the induction of proinflammatory responses. PMID:25816321

  4. Chameleon effect in the Jordan frame of the Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Quiros, Israel; Garca-Salcedo, Ricardo; Gonzalez, Tame; Horta-Rangel, F. Antonio

    2015-08-01

    In this paper we investigate the chameleon effect in the different conformal frames of the Brans-Dicke (BD) theory. Given that, in the standard literature on the subject, the chameleon is described in the Einstein frame almost exclusively, here we pay special attention to the description of this effect in the Jordan and in the string frames. It is shown that, in general, terrestrial and solar system bounds on the mass of the BD scalar field, and bounds of cosmological origin, are difficult to reconcile at once through a single chameleon potential. We point out that, in a cosmological context, provided that the effective chameleon potential has a minimum within a region of constant density of matter, the Brans-Dicke theory transmutes into general relativity with a cosmological constant, in that region. This result, however, can be only locally valid.

  5. Hamiltonian formulation of Palatini f(R) theories a la Brans-Dicke theory

    SciTech Connect

    Olmo, Gonzalo J.; Sanchis-Alepuz, Helios

    2011-05-15

    We study the Hamiltonian formulation of f(R) theories of gravity both in metric and in Palatini formalism using their classical equivalence with Brans-Dicke theories with a nontrivial potential. The Palatini case, which corresponds to the {omega}=-3/2 Brans-Dicke theory, requires special attention because of new constraints associated with the scalar field, which is nondynamical. We derive, compare, and discuss the constraints and evolution equations for the {omega}=-3/2 and {omega}{ne}-3/2 cases. Based on the properties of the constraint and evolution equations, we find that, contrary to certain claims in the literature, the Cauchy problem for the {omega}=-3/2 case is well formulated and there is no reason to believe that it is not well posed in general.

  6. Non-equilibrium dynamics of the Dicke model for mesoscopic aggregates: signatures of superradiance

    NASA Astrophysics Data System (ADS)

    Fuchs, Sebastian; Ankerhold, Joachim; Blencowe, Miles; Kubala, Bjrn

    2016-02-01

    The dynamics of the Dicke model, which describes the interaction of N two-level atoms with a resonant field mode, is studied in the presence of dissipation and in strong non-equilibrium for a moderate number of atoms. Starting from a highly excited state, it is investigated to what extent signatures of superradient phenomena known from the thermodynamic limit N\\to ? , namely, superradiant light emission and atom-field correlations characteristic for the superradiant phase, appear on transient time scales. Attention is also paid to subtleties of modeling dissipation in the weak coupling limit and to the dynamics in phase space. The latter allows phase space correlators to be defined as indicators for collective behavior on transient time scales. These findings may be of relevance for the realization of Dicke physics with superconducting circuits.

  7. A Higher Dimensional Cosmic Domain Wall in Brans-Dicke Theory of Gravitation

    NASA Astrophysics Data System (ADS)

    Reddy, D. R. K.; Rao, P. Govinda; Naidu, R. L.

    2008-12-01

    Five dimensional Kaluza-Klein Space-time is considered in the presence of thick domain walls in the scalar-tensor theory formulated by Brans and Dicke (Phys. Rev. 124:925, 1961). Exact cosmological model, in this theory, is presented with the help of special law of variation proposed by Berman (Nuovo Cim. B 74:182, 1983) for Hubbles parameter. Some physical and kinematical properties of the model are also discussed.

  8. Hydrodynamics of a gaseous system in massive Brans-Dicke gravity

    NASA Astrophysics Data System (ADS)

    Sharif, M.; Manzoor, Rubab

    2016-03-01

    This paper explores hydrodynamics and hydrostatic of a star in the post-Newtonian approximation of massive Brans-Dicke gravity. We study approximated solutions of the field equations up to O(c^{-4}) and generalize Euler equations of motion. We then formulate equations governing the stability and instability of the system. Finally, we discuss spherically symmetric stars for a specific barotropic case like dust, cosmic string and domain wall in this scenario.

  9. Generation of Symmetric Dicke States of Remote Qubits with Linear Optics

    SciTech Connect

    Thiel, C.; Zanthier, J. von; Bastin, T.; Solano, E.; Agarwal, G. S.

    2007-11-09

    We propose a method for generating all symmetric Dicke states, either in the long-lived internal levels of N massive particles or in the polarization degrees of freedom of photonic qubits, using linear optical tools only. By means of a suitable multiphoton detection technique, erasing Welcher-Weg information, our proposed scheme allows the generation and measurement of an important class of entangled multiqubit states.

  10. Production of an X-band horn after a design of Dick Turrin, W2IMU

    NASA Astrophysics Data System (ADS)

    Monstein, Christian

    2015-08-01

    While looking for a nice, easy to perform and cheap students' project in 2009, we investigated X-band (8 to 12 GHz) microwave devices. A 5 m parabolic dish antenna and an X-band down-converter were already available, but we had no antenna feed in our tool box. A web search yielded a simple feed horn design and found sketches and descriptions by Dick Turrin (W2IMU) from 1991.

  11. Constraining red-shift parametrization parameters in Brans-Dicke theory: evolution of open confidence contours

    NASA Astrophysics Data System (ADS)

    Biswas, Ritabrata; Debnath, Ujjal

    2014-10-01

    In Brans-Dicke theory of gravity, from the nature of the scalar field-potential considered, the dark energy, dark matter, radiation densities predicted by different observations and the closedness of the universe considered, we can fix our ω BD , the Brans-Dicke parameter, keeping only the thing in mind that from different solar system constrains it must be greater than 5×105. Once we have a value, satisfying the required lower boundary, in our hand we proceed for setting unknown parameters of the different dark energy models' EoS parameter. In this paper we work with three well known red shift parametrizations of dark energy EoS. To constrain their free parameters for Brans Dicke theory of gravity we take twelve point red shift vs Hubble's parameter data and perform χ 2 test. We present the observational data analysis mechanism for Stern, Stern+BAO and Stern+BAO+CMB observations. Minimising χ 2, we obtain the best fit values and draw different confidence contours. We analyze the contours physically. Also we examine the best fit of distance modulus for our theoretical models and the Supernovae Type Ia Union2 sample. For Brans Dicke theory of gravity the difference from the mainstream confidence contouring method of data analysis id that the confidence contours evolved are not at all closed contours like a circle or a ellipse. Rather they are found to be open contours allowing the free parameters to float inside a infinite region of parameter space. However, negative EoSs are likely to evolve from the best fit values.

  12. Robust creation of arbitrary-sized Dicke states of trapped ions by global addressing

    NASA Astrophysics Data System (ADS)

    Linington, Ian; Vitanov, Nikolay

    2008-05-01

    We propose a novel technique for the creation of entangled Dicke states in a chain of trapped ions. Our approach is robust against experimental imperfections, largely insensitive to motional heating and applicable to arbitrary numbers of ions and excitations. Individual addressing is not required, since the method uses only a single laser, interacting simultaneously with all ions. By factorizing the overall Hilbert space, we show that the dynamics is confined to a ladder of symmetric states which are invariant under permutation of the ions. Sweeping the laser detuning through resonance and enforcing adiabatic evolution then induces a ``bow-tie'' level-crossing wherein the two ends of the ladder are smoothly connected. An initial product state may be transformed into an entangled Dicke state using only two laser pulses. The technique is naturally robust against fluctuations in the laser intensity and the chirp rate. Furthermore, because the method is significantly faster than existing approaches, heating effects can be very small, even when the centre-of-mass mode is used. We quantify the adiabaticity requirements and the effects of motional heating, and estimate an overall fidelity exceeding 98% for the generation of a ten-ion Dicke state. The method may readily be adapted in order to create non-classical superposition states of the ions' collective motion and Greenberger-Horne-Zeilinger states of their internal states.

  13. Brans-Dicke Theory with Λ >0 : Black Holes and Large Scale Structures

    NASA Astrophysics Data System (ADS)

    Bhattacharya, Sourav; Dialektopoulos, Konstantinos F.; Romano, Antonio Enea; Tomaras, Theodore N.

    2015-10-01

    A step-by-step approach is followed to study cosmic structures in the context of Brans-Dicke theory with positive cosmological constant Λ and parameter ω . First, it is shown that regular stationary black-hole solutions not only have constant Brans-Dicke field ϕ , but can exist only for ω =∞, which forces the theory to coincide with the general relativity. Generalizations of the theory in order to evade this black-hole no-hair theorem are presented. It is also shown that in the absence of a stationary cosmological event horizon in the asymptotic region, a stationary black-hole horizon can support a nontrivial Brans-Dicke hair. Even more importantly, it is shown next that the presence of a stationary cosmological event horizon rules out any regular stationary solution, appropriate for the description of a star. Thus, to describe a star one has to assume that there is no such stationary horizon in the faraway asymptotic region. Under this implicit assumption generic spherical cosmic structures are studied perturbatively and it is shown that only for ω >0 or ω ≲-5 their predicted maximum sizes are consistent with observations. We also point out how, many of the conclusions of this work differ qualitatively from the Λ =0 spacetimes.

  14. Brans-Dicke Theory with Λ>0: Black Holes and Large Scale Structures.

    PubMed

    Bhattacharya, Sourav; Dialektopoulos, Konstantinos F; Romano, Antonio Enea; Tomaras, Theodore N

    2015-10-30

    A step-by-step approach is followed to study cosmic structures in the context of Brans-Dicke theory with positive cosmological constant Λ and parameter ω. First, it is shown that regular stationary black-hole solutions not only have constant Brans-Dicke field ϕ, but can exist only for ω=∞, which forces the theory to coincide with the general relativity. Generalizations of the theory in order to evade this black-hole no-hair theorem are presented. It is also shown that in the absence of a stationary cosmological event horizon in the asymptotic region, a stationary black-hole horizon can support a nontrivial Brans-Dicke hair. Even more importantly, it is shown next that the presence of a stationary cosmological event horizon rules out any regular stationary solution, appropriate for the description of a star. Thus, to describe a star one has to assume that there is no such stationary horizon in the faraway asymptotic region. Under this implicit assumption generic spherical cosmic structures are studied perturbatively and it is shown that only for ω>0 or ω≲-5 their predicted maximum sizes are consistent with observations. We also point out how, many of the conclusions of this work differ qualitatively from the Λ=0 spacetimes. PMID:26565454

  15. Henri Ey's neojacksonism and the psychopathology of disintegrated mind.

    PubMed

    Farina, Benedetto; Ceccarelli, Maurizio; Di Giannantonio, Massimo

    2005-01-01

    The French psychiatrist Henri Ey developed his organo-dynamic theory of the mind function and consciousness 50 years ago incorporating Hughling Jackson's thinking, along with psychiatric and philosophical theorizations by Janet and Bergson. This model has not received the attention it deserved, but recent advances in neuroscience rekindled interest for Ey's theory. By overcoming the Cartesian mind-body dualism and treating the mind-body unit as an inseparable whole, this model opens the way for the integrated treatment of mental disorders. Ey's conceptualization of consciousness as being simultaneously both synchronous and diachronic anticipates current theories of consciousness (Damasio, Edelman, Mesulam). PMID:16179816

  16. Edward Henry Sieveking and the demise of essential epilepsy.

    PubMed

    Bladin, Peter F

    2008-04-01

    Edward Henry Sieveking, eminent London physician of Victorian times, is best known as the speaker at the historic meeting at which the chairman, Sir Charles Locock, seem to overshadow him in announcing the introduction of bromide--the first effective anti-convulsant. But in fact Sieveking had announced a most important conceptual advance in epileptology--the demise of "essential epilepsy". In addition his book, published soon after and based upon his lecture, is an important historical resumé of Victorian era concepts and management of epilepsy. His important contributions to the understanding and management of this condition are discussed herein. PMID:18272368

  17. Hugh Henry Bentall, a pioneer of cardiovascular surgery

    PubMed Central

    Thiene, Gaetano

    2014-01-01

    Hugh Henry Bentall, the inventor of the surgical procedure that enabled concomitant replacement of the aortic valve and ascending aorta, died on September 2012 at the age of 92. He was the first Professor of Cardiothoracic Surgery in the United Kingdom, at the Hammersmith Hospital, and carried out the first open-heart operations with a heart-lung machine in London in 1953. Besides cardiac surgery, he paid particular attention to cardiac anatomy and embryology, which he enriched even following retirement. He leaves three sons and a daughter. PMID:24368549

  18. Stable high-titer n-butanol production from sucrose and sugarcane juice by Clostridium acetobutylicum JB200 in repeated batch fermentations.

    PubMed

    Jiang, Wenyan; Zhao, Jingbo; Wang, Zhongqiang; Yang, Shang-Tian

    2014-07-01

    The production of n-butanol, a widely used industrial chemical and promising transportation fuel, from abundant, low-cost substrates, such as sugarcane juice, in acetone-butanol-ethanol (ABE) fermentation was studied with Clostridium acetobutylicum JB200, a mutant with high butanol tolerance and capable of producing high-titer (>20 g/L) n-butanol from glucose. Although JB200 is a favorable host for industrial bio-butanol production, its fermentation performance with sucrose and sugarcane juice as substrates has not been well studied. In this study, the long-term n-butanol production from sucrose by JB200 was evaluated with cells immobilized in a fibrous-bed bioreactor (FBB), showing stable performance with high titer (16-20 g/L), yield (? 0.21 g/g sucrose) and productivity (? 0.32 g/Lh) for 16 consecutive batches over 800 h. Sugarcane thick juice as low-cost substrate was then tested in 3 consecutive batches, which gave similar n-butanol production, demonstrating that JB200 is a robust and promising strain for industrial ABE fermentation. PMID:24811445

  19. Inhibition of Nickel Nanoparticles-Induced Toxicity by Epigallocatechin-3-Gallate in JB6 Cells May Be through Down-Regulation of the MAPK Signaling Pathways.

    PubMed

    Gu, Yuanliang; Wang, Yafei; Zhou, Qi; Bowman, Linda; Mao, Guochuan; Zou, Baobo; Xu, Jin; Liu, Yu; Liu, Kui; Zhao, Jinshun; Ding, Min

    2016-01-01

    With the rapid development in nanotechnology, nickel nanoparticles (Ni NPs) have emerged in the application of nanomedicine in recent years. However, the potential adverse health effects of Ni NPs are unclear. In this study, we examined the inhibition effects of epigallocatechin-3-gallate (EGCG) on the toxicity induced by Ni NPs in mouse epidermal cell line (JB6 cell). MTT assay showed that Ni NPs induced cytotoxicity in a dose-dependent manner while EGCG exerted a certain inhibition on the toxicity. Additionally, EGCG could reduce the apoptotic cell number and the level of reactive oxygen species (ROS) in JB6 cells induced by Ni NPs. Furthermore, we observed that EGCG could down-regulate Ni NPs-induced activator protein-1 (AP-1) and nuclear factor-κB (NF-κB) activation in JB6 cells, which has been shown to play pivotal roles in tumor initiation, promotion and progression. Western blot indicated that EGCG could alleviate the toxicity of Ni NPs through regulating protein changes in MAPK signaling pathways. In summary, our results suggest that careful evaluation on the potential health effects of Ni NPs is necessary before being widely used in the field of nanomedicine. Inhibition of EGCG on Ni NPs-induced cytotoxicity in JB6 cells may be through the MAPK signaling pathways suggesting that EGCG might be useful in preventing the toxicity of Ni NPs. PMID:26943640

  20. Inhibition of Nickel Nanoparticles-Induced Toxicity by Epigallocatechin-3-Gallate in JB6 Cells May Be through Down-Regulation of the MAPK Signaling Pathways

    PubMed Central

    Bowman, Linda; Mao, Guochuan; Zou, Baobo; Xu, Jin; Liu, Yu; Liu, Kui; Zhao, Jinshun; Ding, Min

    2016-01-01

    With the rapid development in nanotechnology, nickel nanoparticles (Ni NPs) have emerged in the application of nanomedicine in recent years. However, the potential adverse health effects of Ni NPs are unclear. In this study, we examined the inhibition effects of epigallocatechin-3-gallate (EGCG) on the toxicity induced by Ni NPs in mouse epidermal cell line (JB6 cell). MTT assay showed that Ni NPs induced cytotoxicity in a dose-dependent manner while EGCG exerted a certain inhibition on the toxicity. Additionally, EGCG could reduce the apoptotic cell number and the level of reactive oxygen species (ROS) in JB6 cells induced by Ni NPs. Furthermore, we observed that EGCG could down-regulate Ni NPs-induced activator protein-1 (AP-1) and nuclear factor-κB (NF-κB) activation in JB6 cells, which has been shown to play pivotal roles in tumor initiation, promotion and progression. Western blot indicated that EGCG could alleviate the toxicity of Ni NPs through regulating protein changes in MAPK signaling pathways. In summary, our results suggest that careful evaluation on the potential health effects of Ni NPs is necessary before being widely used in the field of nanomedicine. Inhibition of EGCG on Ni NPs-induced cytotoxicity in JB6 cells may be through the MAPK signaling pathways suggesting that EGCG might be useful in preventing the toxicity of Ni NPs. PMID:26943640

  1. Development of Monopole Interaction Models for Ionic Compounds. Part I: Estimation of Aqueous Henrys Law Constants for Ions and Gas Phase pKa Values for Acidic Compounds

    EPA Science Inventory

    The SPARC (SPARC Performs Automated Reasoning in Chemistry) physicochemical mechanistic models for neutral compounds have been extended to estimate Henrys Law Constant (HLC) for charged species by incorporating ionic electrostatic interaction models. Combinations of absolute aq...

  2. Into the Past through the Future: Captain Picard Meets Henry V.

    ERIC Educational Resources Information Center

    Blumrich, Ann Nord

    1994-01-01

    Describes beginning a unit on Shakespeare and his play "Henry V" by showing and discussing in class an episode from the television program "Star Trek: The Next Generation" called "The Defector," which opens with a scene from Henry V and makes allusions to the play throughout the episode. (SR)

  3. 33 CFR 80.515 - Cape Henry, VA to Cape Hatteras, NC.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Cape Henry, VA to Cape Hatteras, NC. 80.515 Section 80.515 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Fifth District § 80.515 Cape Henry, VA...

  4. From Classrooms to Careers: The Senior Mastery Process at Henry Ford Academy.

    ERIC Educational Resources Information Center

    Parizek, Deborah; Kesavan, Sandy

    The Henry Ford Academy is the nations first charter school developed jointly by a global corporation, public education, and a non-profit cultural institution. The Senior Mastery Process at Henry Ford Academy is an innovative, challenging program of career exploration and research project for high school seniors. Beginning with initial job…

  5. A Henry's Law Test for Experimental Partitioning Studies of Iron Meteorites

    NASA Technical Reports Server (NTRS)

    Chabot, N. L.; Campbell, A. J.; Humayun, M.; Agee, C. B.

    2001-01-01

    Low-level doped solid metal/liquid metal experiments analyzed by laser ablation ICP-MS allow Henry's Law to be tested. The results indicate Henry's Law is obeyed and the experimental partition coefficients can be applied to iron meteorites. Additional information is contained in the original extended abstract.

  6. Estimation of Henry's Law Constant for a Diverse Set of Organic Compounds from Molecular Structure

    EPA Science Inventory

    The SPARC (SPARC Performs Automated Reasoning in Chemistry) vapor pressure and activity coefficient models were coupled to estimate Henrys Law Constant (HLC) in water and in hexadecane for a wide range of non-polar and polar organic compounds without modification or additional p...

  7. 15. Historic American Buildings Survey. Plan of Fort McHenry, by ...

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

    15. Historic American Buildings Survey. Plan of Fort McHenry, by William Tell Poussin, 1819. National Archives, Records of the War Department, Cartographic Section, Record Group 77, drawer 51, sheet 2. - Fort McHenry National Monument & Historic Shrine, East Fort Avenue at Whetstone Point, Baltimore, Independent City, MD

  8. SN 2008jb: A "Lost" Core-collapse Supernova in a Star-forming Dwarf Galaxy at ~10 Mpc

    NASA Astrophysics Data System (ADS)

    Prieto, J. L.; Lee, J. C.; Drake, A. J.; McNaught, R.; Garradd, G.; Beacom, J. F.; Beshore, E.; Catelan, M.; Djorgovski, S. G.; Pojmanski, G.; Stanek, K. Z.; Szczygieł, D. M.

    2012-01-01

    We present the discovery and follow-up observations of SN 2008jb, a core-collapse supernova in the southern dwarf irregular galaxy ESO 302-14 (MB = -15.3 mag) at 9.6 Mpc. This nearby transient was missed by galaxy-targeted surveys and was only found in archival optical images obtained by the Catalina Real-time Transient Survey and the All-Sky Automated Survey. The well-sampled archival photometry shows that SN 2008jb was detected shortly after explosion and reached a bright optical maximum, V max ~= 13.6 mag (M V, max ~= -16.5). The shape of the light curve shows a plateau of ~100 days, followed by a drop of ~1.4 mag in the V band to a slow decline with an approximate 56Co decay slope. The late-time light curve is consistent with 0.04 ± 0.01 M ⊙ of 56Ni synthesized in the explosion. A spectrum of the supernova obtained two years after explosion shows a broad, boxy Hα emission line, which is unusual for normal Type II-Plateau supernovae at late times. We detect the supernova in archival Spitzer and WISE images obtained 8-14 months after explosion, which show clear signs of warm (600-700 K) dust emission. The dwarf irregular host galaxy, ESO 302-14, has a low gas-phase oxygen abundance, 12 + log(O/H) = 8.2 (~1/5 Z ⊙), similar to those of the Small Magellanic Cloud and the hosts of long gamma-ray bursts and luminous core-collapse supernovae. This metallicity is one of the lowest among local (lsim 10 Mpc) supernova hosts. We study the host environment using GALEX far-UV, R-band, and Hα images and find that the supernova occurred in a large star formation complex. The morphology of the Hα emission appears as a large shell (R ~= 350 pc) surrounding the FUV and optical emission. Using the Hα-to-FUV ratio and FUV and R-band luminosities, we estimate an age of ~9 Myr and a total mass of ~2 × 105 M ⊙ for the star formation complex, assuming a single-age starburst. These properties are consistent with the expanding Hα supershells observed in many well-studied nearby dwarf galaxies, which are tell-tale signs of feedback from the cumulative effect of massive star winds and supernovae. The age estimated for the star-forming region where SN 2008jb exploded suggests a relatively high-mass progenitor star with an initial mass M ~ 20 M ⊙ and warrants further study. We discuss the implications of these findings in the study of core-collapse supernova progenitors. This paper includes data gathered with the 6.5 m Magellan telescope at Las Campanas Observatory, Chile.

  9. SN 2008jb: A 'LOST' CORE-COLLAPSE SUPERNOVA IN A STAR-FORMING DWARF GALAXY AT {approx}10 Mpc

    SciTech Connect

    Prieto, J. L.; Lee, J. C.; Drake, A. J.; Djorgovski, S. G.; McNaught, R.; Garradd, G.; Beacom, J. F.; Beshore, E.; Catelan, M.; Pojmanski, G.; Stanek, K. Z.; Szczygiel, D. M.

    2012-01-20

    We present the discovery and follow-up observations of SN 2008jb, a core-collapse supernova in the southern dwarf irregular galaxy ESO 302-14 (M{sub B} = -15.3 mag) at 9.6 Mpc. This nearby transient was missed by galaxy-targeted surveys and was only found in archival optical images obtained by the Catalina Real-time Transient Survey and the All-Sky Automated Survey. The well-sampled archival photometry shows that SN 2008jb was detected shortly after explosion and reached a bright optical maximum, V{sub max} {approx_equal} 13.6 mag (M{sub V,max} {approx_equal} -16.5). The shape of the light curve shows a plateau of {approx}100 days, followed by a drop of {approx}1.4 mag in the V band to a slow decline with an approximate {sup 56}Co decay slope. The late-time light curve is consistent with 0.04 {+-} 0.01 M{sub Sun} of {sup 56}Ni synthesized in the explosion. A spectrum of the supernova obtained two years after explosion shows a broad, boxy H{alpha} emission line, which is unusual for normal Type II-Plateau supernovae at late times. We detect the supernova in archival Spitzer and WISE images obtained 8-14 months after explosion, which show clear signs of warm (600-700 K) dust emission. The dwarf irregular host galaxy, ESO 302-14, has a low gas-phase oxygen abundance, 12 + log(O/H) = 8.2 ({approx}1/5 Z{sub Sun }), similar to those of the Small Magellanic Cloud and the hosts of long gamma-ray bursts and luminous core-collapse supernovae. This metallicity is one of the lowest among local ({approx}< 10 Mpc) supernova hosts. We study the host environment using GALEX far-UV, R-band, and H{alpha} images and find that the supernova occurred in a large star formation complex. The morphology of the H{alpha} emission appears as a large shell (R {approx_equal} 350 pc) surrounding the FUV and optical emission. Using the H{alpha}-to-FUV ratio and FUV and R-band luminosities, we estimate an age of {approx}9 Myr and a total mass of {approx}2 Multiplication-Sign 10{sup 5} M{sub Sun} for the star formation complex, assuming a single-age starburst. These properties are consistent with the expanding H{alpha} supershells observed in many well-studied nearby dwarf galaxies, which are tell-tale signs of feedback from the cumulative effect of massive star winds and supernovae. The age estimated for the star-forming region where SN 2008jb exploded suggests a relatively high-mass progenitor star with an initial mass M {approx} 20 M{sub Sun} and warrants further study. We discuss the implications of these findings in the study of core-collapse supernova progenitors.

  10. Inflationary phase in Brans-Dicke cosmology with a cosmological constant

    NASA Astrophysics Data System (ADS)

    Berman, Marcelo Samuel

    1989-12-01

    It has been shown earlier that, for a perfect fluid, a perfect gas law of state, and the Robertson-Walker metric, an exponential phase in Brans-Dicke cosmology is possible, with both positive pressure and density, but not with the violated energy condition p = -ρ. We demonstrate in this paper that the inclusion of a cosmological constant into the theory does not change that picture. Permanent address: Departamento de Ciencias Exatas da Faculdade de Filosofia, Ceincias e Letras da FURJ, Joinville, SC 89200, Brazil.

  11. Attractors, statefinders and observational measurement for chameleonic Brans-Dicke cosmology

    SciTech Connect

    Farajollahi, Hossein; Salehi, Amin E-mail: a.salehi@guilan.ac.ir

    2010-11-01

    We investigate chameleonic Brans-Dicke model applied to the FRW universes. A framework to study stability and attractor solutions in the phase space is developed for the model. We show that depending on the matter field and stability conditions, it is possible to realize phantom-like behavior without introducing phantom filed in the model while the stability is fulfilled and phantom crossing occurs. The statefinder parameters to the model for different kinds of matter interacting with the chameleon scalar field are studied. We also compare our model with present day observations.

  12. Propagation of quantum particles in Brans-Dicke spacetime: The case of gamma ray bursts

    NASA Astrophysics Data System (ADS)

    Capozziello, Salvatore; Lambiase, Gaetano

    2015-06-01

    The propagation of boson particles in a gravitational field described by the Brans-Dicke (BD) theory of gravity is analyzed. We derive the wave function of the scalar particles, and the effective potential experienced by the quantum particles considering the role of the varying gravitational coupling. Besides, we calculate the probability to find the scalar particles near the region where a naked singularity is present. The extremely high energy radiated in such a situation could account for the huge emitted power observed in gamma ray bursts (GRBs).

  13. Lemaitre-Tolman-Bondi dust cloud collapse in Brans-Dicke gravity

    NASA Astrophysics Data System (ADS)

    Sharif, Muhammad; Manzoor, Rubab

    2014-11-01

    This paper investigates the phenomenon of gravitational collapse of Lemaitre-Tolman-Bondi (LTB) model in the presence of Brans-Dicke (BD) scalar field with nonzero potential field. We find a class of solutions by taking perfect fluid as well as scalar field and check the validity of weak energy conditions. It turns out that two different types of singularities are formed in the presence of scalar field. We conclude that the end state of gravitational collapse turns out to be a black hole (BH) contrary to general relativity (GR).

  14. The FRW Universes with Barotropic Fluids in Jordan-Brans-Dicke Theory

    NASA Astrophysics Data System (ADS)

    Chauvet-Alducin, P.

    The description of homogeneous and isotropic models for the expansion of the Universe represented by a perfect, barotropic, fluid pose mathematical difficulties that have been overcome when the space is non-flat in scalar-tensor theories only if the energy-stress tensor is vacuous or describes stiff matter, incoherent radiation or ultrarelativistic matter. This paper reveals the dynamics for these and the other ideal fluid models, in non-flat spaces mainly, for the Jordan-Brans-Dicke cosmological theory by showing that its field equations, when written in terms of reduced variables, allow their straightforward partial integration.

  15. Probing the quantum phase transition in the Dicke model through mechanical vibrations

    SciTech Connect

    Santos, J. P.; Semiao, F. L.; Furuya, K.

    2010-12-15

    This paper is concerned with quantum dynamics of a system coupled to a critical reservoir. In this context, we employ the Dicke model which is known to exhibit a superradiant quantum phase transition (QPT) and we allow one of the mirrors to move under a linear restoring force. The electromagnetic field couples to the movable mirror through radiation pressure just like in typical optomechanical setups. We show that, in the thermodynamical limit, the superradiant phase induces a classical driving force on the mirror without causing decoherence.

  16. Dicke superradiance as a nondestructive probe for quantum quenches in optical lattices

    NASA Astrophysics Data System (ADS)

    ten Brinke, Nicolai; Schützhold, Ralf

    2015-07-01

    We study Dicke superradiance as collective and coherent absorption and (time-delayed) emission of photons from an ensemble of ultracold atoms in an optical lattice. Since this process depends on the coherence properties of the atoms (e.g., superfluidity), it can be used as a probe for their quantum state. In analogy to pump-probe spectroscopy in solid-state physics, this detection method facilitates the investigation of nonequilibrium phenomena and is less invasive than time-of-flight experiments or direct (projective) measurements of the atom number (or parity) per lattice site, which both destroy properties of the quantum state such as phase coherence.

  17. Five dimensional spherically symmetric minimally interacting holographic dark energy model in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Reddy, D. R. K.; Raju, P.; Sobhanbabu, K.

    2016-04-01

    Five dimensional spherically symmetric space-time filled with two minimally interacting fields; matter and holographic dark energy components is investigated in a scalar tensor theory of gravitation proposed by Brans and Dicke (Phys. Rev. 124:925, 1961). To obtain a determinate solution of the highly non-linear field equations we have used (i) a relation between metric potentials and (ii) an equation of state which represents disordered radiation in five dimensional universe. The solution obtained represents a minimally interacting and radiating holographic dark energy model in five dimensional universe. Some physical and Kinematical properties of the model are, also, studied.

  18. Large-N scaling behavior of the quantum fisher information in the Dicke model

    NASA Astrophysics Data System (ADS)

    Zhang, Yu-Yu; Chen, Xiang-You

    2015-11-01

    Quantum Fisher information (QFI) of the reduced two-atom state is employed to capture the quantum criticality of the superradiant phase transition in the Dicke model in the infinite size and finite- N systems respectively. The analytical expression of the QFI of its ground state is evaluated explicitly. And finite-size scaling analysis is performed with the large accessible system size due to the effective bosonic coherent-state technique. We also investigate the large-size scaling behavior of the scaled QFI of the reduced N-atom state and show the accurate exponent.

  19. Large-N scaling behavior of the quantum fisher information in the Dicke model

    NASA Astrophysics Data System (ADS)

    Zhang, Yu-Yu; Chen, Xiang-You

    2015-11-01

    Quantum Fisher information (QFI) of the reduced two-atom state is employed to capture the quantum criticality of the superradiant phase transition in the Dicke model in the infinite size and finite-N systems respectively. The analytical expression of the QFI of its ground state is evaluated explicitly. And finite-size scaling analysis is performed with the large accessible system size due to the effective bosonic coherent-state technique. We also investigate the large-size scaling behavior of the scaled QFI of the reduced N-atom state and show the accurate exponent.

  20. Characterization of Sphingomonas sp. JB13 exo-inulinase: a novel detergent-, salt-, and protease-tolerant exo-inulinase.

    PubMed

    Zhou, Junpei; Peng, Mozhen; Zhang, Rui; Li, Junjun; Tang, Xianghua; Xu, Bo; Ding, Junmei; Gao, Yajie; Ren, Junrong; Huang, Zunxi

    2015-03-01

    A glycoside hydrolase family 32 exo-inulinase gene was cloned from Sphingomonas sp. JB13 and expressed in Escherichia coli BL21 (DE3). The purified recombinant enzyme (rInuAJB13) showed an apparently optimal activity at pH 5.5 and 55 °C and remained activity at 10-70 °C. The addition of most metal ions and chemical reagents showed little or no effect (retaining more than 76.5 % activity) on the enzyme activity, notably the addition of surfactants SDS, CTAB, Tween 80, and Triton X-100. Most local liquid detergents, including Balin, Walch, Ariel, Tide, Tupperware, and Bluemoon, also showed little or no effect (retaining more than 77.8 % activity) on the enzyme activity. rInuAJB13 exhibited 135.3-163.6 % activity at the NaCl concentration of 1.0-4.5 M. After incubation with up to 57.0 mg mL(-1) trypsin and 90.0 mg mL(-1) proteinase K at 37 °C for 60 min (pH 7.2), rInuAJB13 retained more than 80 % of its initial activity. The enzyme presents a high proportion (28.0 %) of amino acid residues G, A, and V. This paper is the first to report a detergent-, salt-, and protease-tolerant exo-inulinase. PMID:25575614

  1. Transcriptomic Response to Nitric Oxide Treatment in Larix olgensis Henry.

    PubMed

    Hu, Xiaoqing; Yang, Jingli; Li, Chenghao

    2015-01-01

    Larix olgensis Henry is an important coniferous species found in plantation forests in northeastern China, but it is vulnerable to pathogens. Nitric oxide (NO) is an important molecule involved in plant resistance to pathogens. To study the regulatory role of NO at the transcriptional level, we characterized the transcriptomic response of L. olgensis seedlings to sodium nitroprusside (SNP, NO donor) using Illumina sequencing and de novo transcriptome assembly. A significant number of putative metabolic pathways and functions associated with the unique sequences were identified. Genes related to plant pathogen infection (FLS2, WRKY33, MAPKKK, and PR1) were upregulated with SNP treatment. This report describes the potential contribution of NO to disease resistance in L. olgensis as induced by biotic stress. Our results provide a substantial contribution to the genomic and transcriptomic resources for L. olgensis, as well as expanding our understanding of the involvement of NO in defense responses at the transcriptional level. PMID:26633380

  2. Transcriptomic Response to Nitric Oxide Treatment in Larix olgensis Henry

    PubMed Central

    Hu, Xiaoqing; Yang, Jingli; Li, Chenghao

    2015-01-01

    Larix olgensis Henry is an important coniferous species found in plantation forests in northeastern China, but it is vulnerable to pathogens. Nitric oxide (NO) is an important molecule involved in plant resistance to pathogens. To study the regulatory role of NO at the transcriptional level, we characterized the transcriptomic response of L. olgensis seedlings to sodium nitroprusside (SNP, NO donor) using Illumina sequencing and de novo transcriptome assembly. A significant number of putative metabolic pathways and functions associated with the unique sequences were identified. Genes related to plant pathogen infection (FLS2, WRKY33, MAPKKK, and PR1) were upregulated with SNP treatment. This report describes the potential contribution of NO to disease resistance in L. olgensis as induced by biotic stress. Our results provide a substantial contribution to the genomic and transcriptomic resources for L. olgensis, as well as expanding our understanding of the involvement of NO in defense responses at the transcriptional level. PMID:26633380

  3. Scientific Biography of Henri Bnard (1874-1939)

    NASA Astrophysics Data System (ADS)

    Wesfreid, Jos Eduardo

    Henri Claude Bnard was born at Lieurey, a small French village in the region of Eure, in Normandy, on October 25 th , 1874. He was the only son of Felix A. Bnard (1851-1884) and Hlne M. Mangeant (1837-1901) [1-3]. His father was a small investor, who died very young. H. Bnard finished elementary school in the district of Lisieux and in Caen, nearby his birthplace, and moved to Paris to continue his studies at the Lyce Louis le Grand, one of the best high schools in France. In 1894, he succeeded in the highly competitive entrance examinations to the prestigious Ecole Normale Suprieure in Paris1. Indeed, this year, 17 students were selected from 307 candidates in the sciences section and 25 from 205 candidates in the humanities section [4].

  4. Henry More and the development of absolute time.

    PubMed

    Thomas, Emily

    2015-12-01

    This paper explores the nature, development and influence of the first English account of absolute time, put forward in the mid-seventeenth century by the 'Cambridge Platonist' Henry More. Against claims in the literature that More does not have an account of time, this paper sets out More's evolving account and shows that it reveals the lasting influence of Plotinus. Further, this paper argues that More developed his views on time in response to his adoption of Descartes' vortex cosmology and cosmogony, providing new evidence of More's wider project to absorb Cartesian natural philosophy into his Platonic metaphysics. Finally, this paper argues that More should be added to the list of sources that later English thinkers - including Newton and Samuel Clarke - drew on in constructing their absolute accounts of time. PMID:26568082

  5. Emily Dickinson's ophthalmic consultation with Henry Willard Williams, MD.

    PubMed

    Blanchard, Donald L

    2012-12-01

    Emily Dickinson is one of America's premier poets of the 19th century. Henry Willard Williams, MD, was one of the very first physicians to limit his practice to ophthalmology and was the established leader in his field in Boston, Massachusetts. They met during the time of the Civil War, when Emily consulted him about her ophthalmic disorder. No records of the diagnosis survive. Photophobia, aching eyes, and a restriction in her ability to work up close were her main symptoms. Iritis, exotropia, or psychiatric problems are the most frequent diagnoses offered to explain her difficulties. Rather than attempt a definitive conclusion, this article will offer an additional possibility that Dr Williams likely considered (ie, hysterical hyperaesthesia of the retina). This was a common diagnosis at that time, although it has currently faded from use. PMID:23229703

  6. Henry's law constants of diacids and hydroxy polyacids: recommended values

    NASA Astrophysics Data System (ADS)

    Compernolle, S.; Mller, J.-F.

    2014-03-01

    In spite of the importance of diacids and functionalised diacids for organic aerosol formation through aqueous-phase processes in droplets and aerosol water, there seems to be no reliable set of experimental values for their Henry's law constants (HLCs). We show that their estimation through the use of infinite dilution activity coefficients is also prone to error. Here we present HLC values for diacids and hydroxy polyacids determined from solubilities, water activities and vapour pressures of solids or solutions, by employing thermodynamic relationships. The vapour pressures are found to be the largest source of error, but the analysis of the obtained HLC points to inconsistencies among specific vapour pressure data sets. Although there is considerable uncertainty, the HLC defined as aqueous concentration per unit gaseous partial pressure of linear ?- and ?-diacids appear to be higher than estimated by the often cited review work of Saxena and Hildemann (1996).

  7. Henry's law constants of diacids and hydroxypolyacids: recommended values

    NASA Astrophysics Data System (ADS)

    Compernolle, S.; Mller, J.-F.

    2013-09-01

    In spite of the importance of diacids and functionalised diacids for organic aerosol formation through aqueous-phase processes in droplets and aerosol water, there seems to be no reliable set of experimental values for their Henry's law constants (HLC). We show that their estimation through the use of infinite dilution activity coefficients is also prone to error. Here we present HLC values for diacids and hydroxy polyacids determined from solubilities, water activities and vapour pressures of solids or solutions, by employing thermodynamic relationships. The vapour pressures are found to be the largest source of error, but the analysis of the obtained HLC points to inconsistencies among specific vapour pressure data sets. Although there is considerable uncertainty, the HLC of diacids appear to be higher than estimated by the often cited review work of Saxena and Hildemann (1996).

  8. W.E. Henry Symposium compendium: The importance of magnetism in physics and material science

    SciTech Connect

    Carwell, H.

    1997-09-19

    This compendium contains papers presented at the W. E. Henry Symposium, The Importance of Magnetism in Physics and Material Science. The one-day symposium was conducted to recognize the achievements of Dr. Warren Elliot Henry as educator, scientist, and inventor in a career spanning almost 70 years. Dr. Henry, who is 88 years old, attended the symposium. Nobel Laureate, Dr. Glenn Seaborg, a friend and colleague for over 40 years, attended the event and shared his personal reminiscences. Dr. Seaborg is Associate Director-At-Large at the Lawrence Berkeley National Laboratory. The Compendium begins with three papers which demonstrate the ongoing importance of magnetism in physics and material science. Other contributions cover the highlights of Dr. Henry`s career as a researcher, educator, and inventor. Colleagues and former students share insights on the impact of Dr. Henry`s research in the field of magnetism, low temperature physics, and solid state physics; his influence on students as an educator; and his character, intellect and ingenuity, and passion for learning and teaching. They share a glimpse of the environment and times that molded him as a man, and the circumstances under which he made his great achievements despite the many challenges he faced.

  9. Interacting new agegraphic dark energy in nonflat Brans-Dicke cosmology

    SciTech Connect

    Sheykhi, Ahmad

    2010-01-15

    We construct a cosmological model of late acceleration based on the new agegraphic dark energy model in the framework of Brans-Dicke cosmology where the new agegraphic energy density {rho}{sub D}=3n{sup 2}m{sub p}{sup 2}/{eta}{sup 2} is replaced with {rho}{sub D}=3n{sup 2{phi}2}/(4{omega}{eta}{sup 2}). We show that the combination of the Brans-Dicke field and agegraphic dark energy can accommodate a w{sub D}=-1 crossing for the equation of state of noninteracting dark energy. When an interaction between dark energy and dark matter is taken into account, the transition of w{sub D} to the phantom regime can be more easily accounted for than when we resort to the Einstein field equations. In the limiting case {alpha}=0 ({omega}{yields}{infinity}), all previous results of the new agegraphic dark energy in Einstein gravity are restored.

  10. Spectroscopy of Atomic Vapors in Nanometer Cells: Dicke Narrowing and Beyond

    NASA Astrophysics Data System (ADS)

    Vartanyan, T. A.; Khromov, V. V.

    2012-12-01

    Sub-Doppler spectroscopy of gaseous media confined in thin pillbox-shaped cells was pioneered by R.H. Dicke. In the past, this idea attracted much less attention compared to "Dicke narrowing" in buffer gas where the atoms or molecules perform a diffusive motion instead of being bounced back and forth between the walls of the cell in a completely predetermined nature. The situation is going to be changed as atomic spectroscopy becoming an essential part of mobile devices for civil and military applications that require tiny spectroscopic cells. In the pillbox shaped cells, the role of the fast moving atoms is diminished, while the slowly moving atoms contribute most to the absorption as well as to the fluorescence. The role of the slowly moving atoms and their transient polarization in selective reflection spectroscopy was highlighted by J.L. Cojan. By merging these two approaches we have developed a theoretical description of optical reflection from and transmission through the narrow slice of atomic vapours.

  11. Spherically symmetric thin shells in Brans-Dicke theory of gravity

    SciTech Connect

    Letelier, P.S.; Wang, A. )

    1993-07-15

    The dynamics of spherically symmetric thin shells (or bubbles) is studied in the framework of the Brans-Dicke theory of gravity, using the Newman-Penrose formalism. The Brans-Dicke (BD) gravitational field equations on the bubble wall are given explicitly in terms of the discontinuities of the metric coefficients and the BD scalar field. Consequently, once the space-time geometry outside of the wall is given, these equations, together with the equation of state of the wall, uniquely determine the motion of the bubble. Using the generalized'' Bianchi identities, the interaction of a bubble with gravitational and matter fields is investigated. In particular, it is found that a bubble does not interact with an electromagnetic field, but it does with a scalar field or a fluid. The attraction and repulsion of a bubble are also studied. Exact solutions are constructed, and it is found that some of these solutions represent wormholes. However, these wormholes are different from the ones in Einstein's theory of gravity, in the sense that the throats of the wormholes are not necessarily built with exotic'' matter.

  12. Bianchi type I Universe and instability of new agegraphic dark energy in Brans-Dicke theories

    NASA Astrophysics Data System (ADS)

    Fayaz, V.

    2016-02-01

    In this paper, we consider the new agegraphic dark energy (NADE) in a Bianchi type-I metric (which is a spatially homogeneous and anisotropic) in the framework of Brans-Dicke theory. For this purpose, we use the squared sound speed vs2 whose sign determines the stability of the model. We explore the stability of this model in the presence/absence of interaction between dark energy and dark matter in both flat and non-isotropic geometry. The equation of state and the deceleration parameter of the new agegraphic dark energy in a anisotropic Universe is obtained. We show that the combination of Brans-Dicke field and new agegraphic dark energy can accommodate ω_{\\varLambda}=-1 crossing for the equation of state of noninteracting dark energy. When an interaction between dark energy and dark matter is taken into account, the transition of ω_{\\varLambda} to phantom regime can be more easily accounted when the Einstein field equations is being resort. In conclusion, we find evidences that the new agegraphic dark energy in BD theory can not lead to a stable Universe favored by observations at the present time. The anisotropy of the Universe decreases and the Universe transits to an isotropic flat FRW Universe accommodating the present acceleration.

  13. Acoustics and its relation to language: The influence of Dick Bolt

    NASA Astrophysics Data System (ADS)

    Stevens, Kenneth N.

    2003-04-01

    Under the mentoring of Dick Bolt, and the stimulation he provided in the Acoustics Laboratory at MIT, many students were exposed to a range of topics in acoustics, including mechanisms of sound generation, radiation, and propagation, noise control, acoustics of resonators and rooms, human responses to sound, and speech perception under various adverse conditions. As someone who became interested in speech communication, I have recognized that this kind of quantitative background in acoustics is an important requirement for developing models of how humans produce speech, how they perceive and understand speech, and how children acquire these skills. Speech production involves sound sources produced by a nonlinear mechanical system and by noise arising from turbulent airflow. Sound is propagated in a vocal tract with yielding walls, and acoustic coupling is introduced by lossy resonators attached to the vocal tract, including the trachea and the nasal cavity. These acoustic principles of sound generation create an inventory of sound types that give rise to distinctive responses in the ears and brains of listeners. The solid grounding in acoustics provided by Dick Bolt and his leadership have helped in the formation of this linkage between acoustics, speech physiology, linguistics, and human perception.

  14. Enhancing Mitochondrial Respiration Suppresses Tumor Promoter TPA-Induced PKM2 Expression and Cell Transformation in Skin Epidermal JB6 Cells

    PubMed Central

    Wittwer, Jennifer A.; Robbins, Delira; Wang, Fei; Codarin, Sarah; Shen, Xinggui; Kevil, Christopher G.; Huang, Ting-Ting; Van Remmen, Holly; Richardson, Arlan; Zhao, Yunfeng

    2016-01-01

    Differentiated cells primarily metabolize glucose for energy via the tricarboxylic acid cycle and oxidative phosphorylation, but cancer cells thrive on a different mechanism to produce energy, characterized as the Warburg effect, which describes the increased dependence on aerobic glycolysis. The M2 isoform of pyruvate kinase (PKM2), which is responsible for catalyzing the final step of aerobic glycolysis, is highly expressed in cancer cells and may contribute to the Warburg effect. However, whether PKM2 plays a contributing role during early cancer development is unclear. In our studies, we have made an attempt to elucidate the effects of varying mitochondrial respiration substrates on skin cell transformation and expression of PKM2. Tumorigenicity in murine skin epidermal JB6 P+ (promotable) cells was measured in a soft agar assay using 12-O-tetradecanoylphorbol-13-acetate (TPA) as a tumor promoter. We observed a significant reduction in cell transformation upon pretreatment with the mitochondrial respiration substrate succinate or malate/pyruvate. We observed that increased expression and activity of PKM2 in TPA-treated JB6 P+ cells and pretreatment with succinate or malate/pyruvate suppressed the effects. In addition, TPA treatment also induced PKM2 whereas PKM1 expression was suppressed in mouse skin epidermal tissues in vivo. In comparison with JB6 P+ cells, the nonpromotable JB6 P− cells showed no increase in PKM2 expression or activity upon TPA treatment. Knockdown of PKM2 using a siRNA approach significantly reduced skin cell transformation. Thus, our results suggest that PKM2 activation could be an early event and play a contributing role in skin tumorigenesis. PMID:21673231

  15. [Henri Moissn, first French Nobel prize winner in chemistry: the man, the picture collector].

    PubMed

    Viel, C

    1999-03-01

    Born in Paris in September 1852, Henri Moisson died in February 1907, two months after receiving the Nobel prize for chemistry. After a short schooling at Meaux college, he was destined to be a clock maker. He owes his vocation for chemistry to Jules Plicque, a chemist and friend at the college. Henri Moisson attended Fremy's school of chemistry at the Paris Natural History Museum and undertook pharmaceutical studies. In this presentation, we take a look at Henri Moissan's child-hood and teenage years, his scientific education and offer a glimpse of the man and the picture collector. PMID:10365464

  16. c-Jun/AP-1 pathway-mediated cyclin D1 expression participates in low dose arsenite-induced transformation in mouse epidermal JB6 Cl41 cells

    SciTech Connect

    Zhang Dongyun; Li Jingxia; Gao Jimin; Huang Chuanshu

    2009-02-15

    Arsenic is a well-documented human carcinogen associated with skin carcinogenesis. Our previous work reveals that arsenite exposure is able to induce cell transformation in mouse epidermal cell JB6 Cl41 through the activation of ERK, rather than JNK pathway. Our current studies further evaluate downstream pathway in low dose arsenite-induced cell transformation in JB6 Cl41 cells. Our results showed that treatment of cells with low dose arsenite induced activation of c-Jun/AP-1 pathway, and ectopic expression of dominant negative mutant of c-Jun (TAM67) blocked arsenite-induced transformation. Furthermore, our data indicated that cyclin D1 was an important downstream molecule involved in c-Jun/AP-1-mediated cell transformation upon low dose arsenite exposure, because inhibition of cyclin D1 expression by its specific siRNA in the JB6 Cl41 cells resulted in impairment of anchorage-independent growth of cells induced by low dose arsenite. Collectively, our results demonstrate that c-Jun/AP-1-mediated cyclin D1 expression is at least one of the key events implicated in cell transformation upon low dose arsenite exposure.

  17. Controlling instability and phase hops of a kicked two-level ion in Lamb-Dicke regime

    NASA Astrophysics Data System (ADS)

    Chen, Hao; Tan, Jintao; Hai, Kuo; Zhang, Xili; Hai, Wenhua

    2015-12-01

    Nonlinearity and singularity lead to lack of quantum exact solution of a kicked rotor. We here study quantum motion of a laser-kicked two-level ion in the Lamb-Dicke regime and obtain a set of exact solutions of the generalized coherent states. A new stability region of parameter space where classical stability criterion fully agrees with fidelity treatment of quantum ground-state stability is found, which unusually contains the resonance frequency for a weak kick and the larger kick strength for a far-off-resonance frequency. When the field parameters in the stability region are applied, the ion's wave-packet trains continuously oscillate in the Lamb-Dicke regime, while for the parameters in the instability region, they collapse and spread to far away from the Lamb-Dicke regime, resulting in the crossover from linearity to nonlinearity. Meanwhile the laser kicks bring hopping phases of the exact solutions, and lead to stable or unstable hops of the expected momentum and energy. The exact results provide a transparent scheme for using periodic kicks with wider parameter region to localize ions in the Lamb-Dicke regime and for suppressing the instability-induced decoherence in laser-ion interactions, which can be observed in the existing experimental setups and possess potential applications.

  18. Three-dimensional pin-to-pin analyses of VVER-440 cores by the MOBY-DICK code

    SciTech Connect

    Lehmann, M.; Mikolas, P.

    1994-12-31

    Nuclear design for the Dukovany (EDU) VVER-440s nuclear power plant is routinely performed by the MOBY-DICK system. After its implementation on Hewlett Packard series 700 workstations, it is able to perform routinely three-dimensional pin-to-pin core analyses. For purposes of code validation, the benchmark prepared from EDU operational data was solved.

  19. More Than Two Sides to Every Coin: Using Melville's "Moby Dick" to Teach Objective and Subjective Description.

    ERIC Educational Resources Information Center

    Drake, David B.

    1995-01-01

    Explains a descriptive analysis exercise based on Chapter 99 of "Moby Dick." Notes that students are given a description of a coin, asked to draw the coin, and then freewrite about what they and their classmates have drawn. States that the exercise is intended to illustrate the relationship between objective and subjective description. (PA)

  20. PKM2 Inhibitor Shikonin Suppresses TPA-Induced Mitochondrial Malfunction and Proliferation of Skin Epidermal JB6 Cells

    PubMed Central

    Li, Wenjuan; Liu, Joan; Zhao, Yunfeng

    2016-01-01

    Chemoprevention has been a pivotal and effective strategy during the skin cancer treatment. Using human skin normal and tumor samples, we demonstrated that both the expression and activity levels of pyruvate kinase M2 (PKM2) were higher in skin tumor tissues than normal tissues, suggesting that PKM2, one of important metabolic enzyme, might serve as a target for skin cancer prevention and/or therapy. Shikonin, a small-molecule active chemical, has been studied as an anti-cancer drug candidate in human cancer models. However, the mechanism of action and the chemopreventive potential of shikonin are unclear. Herein, we used the skin epidermal JB6 P+ cells and demonstrated that shikonin suppressed the tumor promoter 12-O-tetradecanoylphorbol 13-acetate (TPA) induced neoplastic cell transformation and PKM2 activation in the early stage of carcinogenesis. Mitochondrial functions were inhibited by TPA treatment, as indicated by reduced mitochondrial membrane potential and mitochondrial respiration, which were restored by shikonin. We also examined the levels of lactate as a glycolysis marker, and shikonin suppressed its increase caused by tumor promoter treatment. Modulation of cell metabolism by shikonin was associated with G2–M phase accumulation, and Fra-1 (a major subunit of activator protein 1 in skin tumorigenesis) downregulation. In addition, we demonstrated that AMP-activated protein kinase (AMPK), an energy sensor, which is inactivated by TPA, shikonin could reverse AMPK activity. These results suggest that shikonin bears chemopreventive potential for human skin cancers in which PKM2 is upregulated, which might be mediated by inhibiting oncogenic activation, PKM2 activation, and mitochondrial dysfunction. PMID:23255458

  1. PKM2 inhibitor shikonin suppresses TPA-induced mitochondrial malfunction and proliferation of skin epidermal JB6 cells.

    PubMed

    Li, Wenjuan; Liu, Joan; Zhao, Yunfeng

    2014-05-01

    Chemoprevention has been a pivotal and effective strategy during the skin cancer treatment. Using human skin normal and tumor samples, we demonstrated that both the expression and activity levels of pyruvate kinase M2 (PKM2) were higher in skin tumor tissues than normal tissues, suggesting that PKM2, one of important metabolic enzyme, might serve as a target for skin cancer prevention and/or therapy. Shikonin, a small-molecule active chemical, has been studied as an anti-cancer drug candidate in human cancer models. However, the mechanism of action and the chemopreventive potential of shikonin are unclear. Herein, we used the skin epidermal JB6 P+ cells and demonstrated that shikonin suppressed the tumor promoter 12-O-tetradecanoylphorbol 13-acetate (TPA) induced neoplastic cell transformation and PKM2 activation in the early stage of carcinogenesis. Mitochondrial functions were inhibited by TPA treatment, as indicated by reduced mitochondrial membrane potential and mitochondrial respiration, which were restored by shikonin. We also examined the levels of lactate as a glycolysis marker, and shikonin suppressed its increase caused by tumor promoter treatment. Modulation of cell metabolism by shikonin was associated with G2-M phase accumulation, and Fra-1 (a major subunit of activator protein 1 in skin tumorigenesis) downregulation. In addition, we demonstrated that AMP-activated protein kinase (AMPK), an energy sensor, which is inactivated by TPA, shikonin could reverse AMPK activity. These results suggest that shikonin bears chemopreventive potential for human skin cancers in which PKM2 is upregulated, which might be mediated by inhibiting oncogenic activation, PKM2 activation, and mitochondrial dysfunction. PMID:23255458

  2. Gravitational collapse in Husain space-time for Brans-Dicke gravity theory with power-law potential

    NASA Astrophysics Data System (ADS)

    Rudra, Prabir; Biswas, Ritabrata; Debnath, Ujjal

    2014-12-01

    The motive of this work is to study gravitational collapse in Husain space-time in Brans-Dicke gravity theory. Among many scalar-tensor theories of gravity, Brans-Dicke is the simplest and the impact of it can be regulated by two parameters associated with it, namely, the Brans-Dicke parameter, ω, and the potential-scalar field dependency parameter n respectively. V. Husain's work on exact solution for null fluid collapse in 1996 has influenced many authors to follow his way to find the end-state of the homogeneous/inhomogeneous dust cloud. Vaidya's metric is used all over to follow the nature of future outgoing radial null geodesics. Detecting whether the central singularity is naked or wrapped by an event horizon, by the existence of future directed radial null geodesic emitted in past from the singularity is the basic objective. To point out the existence of positive trajectory tangent solution, both particular parametric cases (through tabular forms) and wide range contouring process have been applied. Precisely, perfect fluid's EoS satisfies a wide range of phenomena: from dust to exotic fluid like dark energy. We have used the EoS parameter k to determine the end state of collapse in different cosmological era. Our main target is to check low ω (more deviations from Einstein gravity-more Brans Dicke effect) and negative k zones. This particularly throws light on the nature of the end-state of collapse in accelerated expansion in Brans Dicke gravity. It is seen that for positive values of EoS parameter k, the collapse results in a black hole, whereas for negative values of k, naked singularity is the only outcome. It is also to be noted that "low ω" leads to the possibility of getting more naked singularities even for a non-accelerating universe.

  3. HENRY'S FORK AND SNAKE RIVER BASIN, IDAHO - WATER QUALITY REPORT, 1973

    EPA Science Inventory

    Reported problems in the Henrys Fork and Snake River Basin (17040202, 17040203, 17040201) include bacteria levels exceeding water quality standards, dissolved oxygen standards violations, and excessive algal blooms resulting in aesthetic problems and contributing to DO depression...

  4. Did schizophrenia change the course of English history? The mental illness of Henry VI.

    PubMed

    Bark, Nigel

    2002-10-01

    Henry VI, King of England, at age 19 founded Eton College and King's College, Cambridge. At 31 he had a sudden, dramatic mental illness in which he was mute and unresponsive. Before, he had been paranoid, grandiose, and indecisive. After, he was apathetic with deterioration of ability, drive, interest and self-care, and hallucinations and religious delusions. This illness, which is consistent with a diagnosis of schizophrenia, robbed Henry of his personality, his crown, his wife, his only son, and his life. It led to three decades of brutal fighting for the crown (the 'Wars of the Roses') that resulted in a new dynasty with a dramatic impact on the country: the Tudors, Henry VIII, and Elizabeth I and their descendants. Henry's story illustrates how schizophrenia can devastate individuals and families and change the course of history and yet it raises questions about how achievement and illness are related. PMID:12208181

  5. 78 FR 8682 - Culturally Significant Objects Imported for Exhibition Determinations: “Henri Labrouste...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-06

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF STATE Culturally Significant Objects Imported for Exhibition Determinations: ``Henri Labrouste: Structure Brought to Light'' SUMMARY: Notice is hereby given of the following determinations: Pursuant to the...

  6. HABS DC,WASH,515A (sheet 4 of 4) Captain Henry Saunders ...

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

    HABS DC,WASH,515A- (sheet 4 of 4) - Captain Henry Saunders House, Virginia Room, National Museum of American History, Smithsonian Institution (moved from VA, Windsor vicinity, U.S. Route 460), Washington, District of Columbia, DC

  7. HABS DC,WASH,515A (sheet 3 of 4) Captain Henry Saunders ...

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

    HABS DC,WASH,515A- (sheet 3 of 4) - Captain Henry Saunders House, Virginia Room, National Museum of American History, Smithsonian Institution (moved from VA, Windsor vicinity, U.S. Route 460), Washington, District of Columbia, DC

  8. HABS DC,WASH,515A (sheet 2 of 4) Captain Henry Saunders ...

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

    HABS DC,WASH,515A- (sheet 2 of 4) - Captain Henry Saunders House, Virginia Room, National Museum of American History, Smithsonian Institution (moved from VA, Windsor vicinity, U.S. Route 460), Washington, District of Columbia, DC

  9. HABS DC,WASH,515A (sheet 1 of 4) Captain Henry Saunders ...

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

    HABS DC,WASH,515A- (sheet 1 of 4) - Captain Henry Saunders House, Virginia Room, National Museum of American History, Smithsonian Institution (moved from VA, Windsor vicinity, U.S. Route 460), Washington, District of Columbia, DC

  10. 46 CFR 7.55 - Cape Henry, VA to Cape Fear, NC.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Cape Henry, VA to Cape Fear, NC. 7.55 Section 7.55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.55 Cape Henry, VA to Cape Fear, NC. (a) A line drawn from Rudee Inlet Jetty Light “2”...

  11. 46 CFR 7.55 - Cape Henry, VA to Cape Fear, NC.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Cape Henry, VA to Cape Fear, NC. 7.55 Section 7.55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.55 Cape Henry, VA to Cape Fear, NC. (a) A line drawn from Rudee Inlet Jetty Light “2”...

  12. 46 CFR 7.55 - Cape Henry, VA to Cape Fear, NC.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Cape Henry, VA to Cape Fear, NC. 7.55 Section 7.55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.55 Cape Henry, VA to Cape Fear, NC. (a) A line drawn from Rudee Inlet Jetty Light “2”...

  13. 46 CFR 7.55 - Cape Henry, VA to Cape Fear, NC.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Cape Henry, VA to Cape Fear, NC. 7.55 Section 7.55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.55 Cape Henry, VA to Cape Fear, NC. (a) A line drawn from Rudee Inlet Jetty Light “2”...

  14. 46 CFR 7.55 - Cape Henry, VA to Cape Fear, NC.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Cape Henry, VA to Cape Fear, NC. 7.55 Section 7.55 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.55 Cape Henry, VA to Cape Fear, NC. (a) A line drawn from Rudee Inlet Jetty Light “2”...

  15. The head that wears the crown: Henry VIII and traumatic brain injury.

    PubMed

    Ikram, Muhammad Qaiser; Sajjad, Fazle Hakim; Salardini, Arash

    2016-06-01

    Henry VIII of England is one of the most controversial figures in European history. He was born on 28 June 1491 as the second son of Henry VII and Elizabeth of York and became the heir to the English throne after his elder brother died prematurely. A contradictory picture of Henry's character emerges from history: the young Henry was a vigorous, generous and intelligent king who saw early military and naval successes. In contrast, in his later years he became cruel, petty and tyrannical. His political paranoia and military misjudgements are in direct contrast to his earlier successes and promise. Several hypotheses have been put forward regarding his transformation from a renaissance king to a later medieval tyrant, including endocrinopathies, psychiatric illnesses and traumatic brain injury. In this paper we examine the historical evidence linking the change in Henry's personality and health problems to traumatic brain injury. To our knowledge this is the first systematic neurological study of traumatic brain injury in Henry VIII. PMID:26857293

  16. Henry's voices: the representation of auditory verbal hallucinations in an autobiographical narrative.

    PubMed

    Demjén, Zsófia; Semino, Elena

    2015-06-01

    The book Henry's Demons (2011) recounts the events surrounding Henry Cockburn's diagnosis of schizophrenia from the alternating perspectives of Henry himself and his father Patrick. In this paper, we present a detailed linguistic analysis of Henry's first-person accounts of experiences that could be described as auditory verbal hallucinations. We first provide a typology of Henry's voices, taking into account who or what is presented as speaking, what kinds of utterances they produce and any salient stylistic features of these utterances. We then discuss the linguistically distinctive ways in which Henry represents these voices in his narrative. We focus on the use of Direct Speech as opposed to other forms of speech presentation, the use of the sensory verbs hear and feel and the use of 'non-factive' expressions such as I thought and as if. We show how different linguistic representations may suggest phenomenological differences between the experience of hallucinatory voices and the perception of voices that other people can also hear. We, therefore, propose that linguistic analysis is ideally placed to provide in-depth accounts of the phenomenology of voice hearing and point out the implications of this approach for clinical practice and mental healthcare. PMID:25505160

  17. Enzyme-Catalyzed Henry Reaction in Choline Chloride-Based Deep Eutectic Solvents.

    PubMed

    Tian, Xuemei; Zhang, Suoqin; Zheng, Liangyu

    2016-01-28

    The enzyme-catalyzed Henry reaction was realized using deep eutectic solvents (DESs) as a reaction medium. The lipase from Aspergillus niger (lipase AS) showed excellent catalytic activity toward the substrates aromatic aldehydes and nitromethane in choline chloride:glycerol at a molar ratio of 1:2. Addition of 30 vol% water to DES further improved the lipase activity and inhibited DES-catalyzed transformation. A final yield of 92.2% for the lipase AS-catalyzed Henry reaction was achieved under optimized reaction conditions in only 4 h. In addition, the lipase AS activity was improved by approximately 3-fold in a DES-water mixture compared with that in pure water, which produced a final yield of only 33.4%. Structural studies with fluorescence spectroscopy showed that the established strong hydrogen bonds between DES and water may be the main driving force that affects the spatial conformation of the enzyme, leading to a change in lipase activity. The methodology was also extended to the aza-Henry reaction, which easily occurred in contrast to that in pure water. The enantioselectivity of both Henry and aza-Henry reactions was not found. However, the results are still remarkable, as we report the first use of DES as a reaction medium in a lipase-catalyzed Henry reaction. PMID:26437947

  18. Modified Holographic Ricci Dark Energy in Chameleon Brans-Dicke Cosmology and Its Thermodynamic Consequence

    NASA Astrophysics Data System (ADS)

    Jawad, A.; Chattopadhyay, S.; Bhattacharya, S.; Pasqua, A.

    2015-04-01

    The objective of this paper is to discuss the Chameleon Brans-Dicke gravity with non-minimally matter coupling of scalar field. We take modified Holographic Ricci dark energy model in this gravity with its energy density in interaction with energy density of cold dark matter. We assume power-law ansatz for scale factor and scalar field to discuss potential as well as coupling functions in the evolving universe. These reconstructed functions are plotted versus scalar field and time for different values of power component of scale factor n. We observe that potential and coupling functions represent increasing behavior, in particular, consistent results for a specific value of n. Finally, we have examined validity of the generalized second law of thermodynamics and we have observed its validity for all values of n. The financial Supported from Department of Science and Technology, Govt. of India under Project Grant No. SR/FTP/PS-167/2011 is thankfully acknowledged by SC

  19. From Floquet to Dicke: Quantum Spin Hall Insulator Interacting with Quantum Light.

    PubMed

    Gulácsi, Balázs; Dóra, Balázs

    2015-10-16

    Time-periodic perturbations due to classical electromagnetic fields are useful to engineer the topological properties of matter using the Floquet theory. Here we investigate the effect of quantized electromagnetic fields by focusing on the quantized light-matter interaction on the edge state of a quantum spin Hall insulator. A Dicke-type superradiant phase transition occurs at arbitrary weak coupling, the electronic spectrum acquires a finite gap, and the resulting ground-state manifold is topological with a Chern number of ±1. When the total number of excitations is conserved, a photocurrent is generated along the edge, being pseudoquantized as ωln(1/ω) in the low-frequency limit and decaying as 1/ω for high frequencies with ω the photon frequency. The photon spectral function exhibits a clean Goldstone mode, a Higgs-like collective mode at the optical gap and the polariton continuum. PMID:26550853

  20. Drude weight, cyclotron resonance, and the Dicke model of graphene cavity QED

    NASA Astrophysics Data System (ADS)

    Polini, Marco; Chirolli, Luca; Giovannetti, Vittorio; MacDonald, Allan

    2013-03-01

    The unique optoelectronic properties of graphene make this two-dimensional (2D) material an ideal platform for fundamental studies of cavity quantum electrodynamics (QED) in the strong-coupling regime. The celebrated Dicke model of cavity QED can be approximately realized in this material when the cyclotron transition of its 2D massless Dirac fermion carriers is nearly resonant with a cavity photon mode. In this talk I will discuss the theory of strong matter-photon coupling in this circumstance, emphasizing the essential role of a dynamically generated matter energy term that is quadratic in the photon field and absent in graphene's low-energy Dirac model. Work supported by MIUR-FIRB grants RBID08B3FM and RBFR10M5BT, Welch Foundation grant TBF1473, and by DOE Division of Materials Sciences and Engineering grant DE-FG03-02ER45958

  1. Particle collisions near a Kerr-like black hole in Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Sultana, Joseph; Bose, Benjamin

    2015-11-01

    A recent discovery in 2009 by Bañados, Silk and West (BSW), which generated a lot of interest, involves the arbitrary high center-of-mass (c.m.) energies for free particle collisions at the horizon of an extreme kerr black hole when one of the free particles has a critical value of the angular momentum. In light of this we consider the rotating Kerr-like black hole solution in Brans-Dicke theory and study the motion of scalar test charges in the vicinity of the black hole horizon. We show that the interaction of the test scalar charges with the background scalar field in this spacetime suppresses the c.m. energy for collisions occurring near the event horizon, and the value of the c.m. energy there, is finite irrespective of whether the black hole is extreme or not and its value is also independent of the angular momenta of the colliding test charges.

  2. Metric factorizability and equivalence of brane world models with Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Chakraborty, Sumanta; SenGupta, Soumitra

    2015-07-01

    In the standard brane world models, the bulk metric ansatz is usually assumed to be factorizable in brane and bulk coordinates. However, it is not self-evident that it is always possible to factorize the bulk metric. Using the gradient expansion scheme, which involves the expansion of bulk quantities in terms of the brane-to-bulk curvature ratio as a perturbative parameter, we explicitly show that metric factorizability is a valid assumption up to second order in the perturbative expansion. We also argue from our result that the same should be true for all orders in the perturbation scheme. We further establish that the nonlocal terms present in the bulk gravitational field equation can be replaced by the radion field; the effective action on the brane thereby obtained resembles the Brans-Dicke theory of gravity.

  3. Parametric fluorescence in a sequence of resonators: An analogy with Dicke superradiance

    NASA Astrophysics Data System (ADS)

    Onodera, T.; Liscidini, Marco; Sipe, J. E.; Helt, L. G.

    2016-04-01

    We investigate spontaneous four-wave mixing (SFWM) in a single-channel side-coupled integrated spaced sequence of resonators (SCISSOR). Analytic expressions for the number of photon pairs generated, as well as the biphoton wave function (joint spectral amplitude) describing the pairs, are derived and numerically computed for different pump pulse durations and numbers of ring resonators. In the limit of a long input pump pulse, we show a strong analogy between super-linear scaling of generation efficiency with respect to the number of rings in the structure and Dicke superradiance. More generally, we discuss in detail the factors that influence the shape of the biphoton wave function, as well as the conditions for observing super-SFWM.

  4. Comparison of the Dicke model and the Hamiltonian for n quantum dots

    NASA Astrophysics Data System (ADS)

    Sanchez-Mondragon, Jose Javier; Alejo-Molina, Adalberto; Sanchez-Sanchez, Sergio; Torres-Cisneros, Miguel

    2005-04-01

    CQED has been an active field of research for the last three decades, describing the intimacy of the interaction of radiation and matter in small volumes λ3, and have demonstrated that modifies not only the nature of this interaction, but also atomic characteristic that often were thought intrinsic, such as spontaneous emission or the very quantum nature of the interaction. These conditions have acquired quite an importance for the current activity on Quantum computation and Information. However, most of that activity has been developed in the conceptual and experimental framework of atomic systems. There is evidence that such features also occurs in Quantum Dots. We compare the Dicke and Jaynes Cummings dynamics of atoms described by the Hamiltonian of Quantum Dots, and develop the SU(2) perturbative approach in the regimen where the excitation number (atoms + photons) is larger than the number of atoms L. We exhibit the dynamical detuning produced by the Forster interaction.

  5. Thermodynamics of charged rotating black branes in Brans-Dicke theory with quadratic scalar field potential

    SciTech Connect

    Dehghani, M. H.; Pakravan, J.; Hendi, S. H.

    2006-11-15

    We construct a class of charged rotating solutions in (n+1)-dimensional Maxwell-Brans-Dicke theory with flat horizon in the presence of a quadratic potential and investigate their properties. These solutions are neither asymptotically flat nor (anti)-de Sitter. We find that these solutions can present black brane, with inner and outer event horizons, an extreme black brane or a naked singularity provided the parameters of the solutions are chosen suitably. We compute the finite Euclidean action through the use of counterterm method, and obtain the conserved and thermodynamic quantities by using the relation between the action and free energy in grand-canonical ensemble. We find that these quantities satisfy the first law of thermodynamics, and the entropy does not follow the area law.

  6. Entanglement dynamics of the ultrastrong-coupling three-qubit Dicke model

    NASA Astrophysics Data System (ADS)

    Mao, Lijun; Liu, Yanxia; Zhang, Yunbo

    2016-05-01

    We give an analytical description of the dynamics of the three-qubit Dicke model using the adiabatic approximation in the parameter regime where the qubit transition frequencies are far off-resonance with the field frequency and the interaction strengths reach the ultrastrong-coupling regimes. Qualitative differences arise upon comparison to single- and two-qubit systems. Simple analytic formulas show that three revival sequences produce a three-frequency beat note in the time evolution of the population. We find an explicit way to estimate the dynamics for qubit-field and qubit-qubit entanglement inside the three-qubit system in the ultrastrong-coupling regime, and the resistance to sudden death proves that the entanglement in the Greenberger-Horne-Zeilinger state is more robust than that in the W state.

  7. The enigmatic figure of Dr Henry Maudsley (1835-1918).

    PubMed

    Pantelidou, Maria; Demetriades, Andreas K

    2014-08-01

    In spite of his contribution to psychiatry in 19th century Britain, Henry Maudsley remains a mysterious figure, a man mostly known for his donation to the London County Council for the building of the Maudsley Hospital and for The Maudsley Annual Lecture created in honour of his benevolence. Besides Sir Aubrey Lewis' article in 1951 and Michael Collie's attempt in 1988 to construct a biographical study on Maudsley, there does not seem to be any current endeavour to tell the story of his life, whereas Trevor Turner's contribution to the 2004 Oxford Dictionary of National Biography gives a somewhat scathing but unattributed account of Maudsley's personality. This essay attempts to explore his contributions to the Medico-Psychological Association (MPA), the current Royal College of Psychiatrists, his editorship of the Journal of Mental Health (currently named the British Journal of Psychiatry), his literary contributions and his vision for a psychiatric hospital. This essay is an attempt to demystify his figure and to explore some of the rumours and criticisms surrounding his name and the reasons why so little has been written about him. It is also a venture to unravel his complex personality and his intricate philosophy. PMID:24944050

  8. Henri Victor Regnault: Experimentalist of the Science of Heat

    NASA Astrophysics Data System (ADS)

    Reif-Acherman, Simón

    2010-12-01

    Henri Victor Regnault (1810-1878) was one of the most famous French experimental scientists of the nineteenth century. After studying and carrying out research at the École Polytechnique and the École des Mines in Paris, he was elected to the Paris Académie des Sciences in 1840 and was appointed Professor of Experimental Physics at the Collège de France in 1841. His initial researches were in chemistry, but his careful experimental investigations of the law of the specific heat of solids that Pierre Louis Dulong (1785-1838) and Alexis Thérèse Petit (1791-1820) proposed in 1818 opened the door to his transition to physics and to his pioneering experimental researches on various thermodynamic properties of liquids and gases. I focus particularly on his investigations on the expansion, compressibility, vapor pressure, and speed of sound in gases. He also made important contributions to the new art of photography and to the ceramic industry as director of the Sèvres factory, at a time when his personal life was filled with tragedy. While his experimental work was acclaimed by his contemporaries, it has been largely neglected by scientists and historians today.

  9. James Henry Marriott: New Zealand's first professional telescope-maker

    NASA Astrophysics Data System (ADS)

    Orchiston, Wayne; Romick, Carl; Brown, Pendreigh.

    2015-11-01

    James Henry Marriott was born in London in 1799 and trained as an optician and scientific instrument- maker. In 1842 he emigrated to New Zealand and in January 1843 settled in the newly-established town of Wellington. He was New Zealand's first professional telescope-maker, but we have only been able to locate one telescope made by him while in New Zealand, a brass 1-draw marine telescope with a 44-mm objective, which was manufactured in 1844. In 2004 this marine telescope was purchased in Hawaii by the second author of this paper. In this paper we provide biographical information about Marriott, describe his 1844 marine telescope and speculate on its provenance. We conclude that although he may have been New Zealand's first professional telescope-maker Marriot actually made very few telescopes or other scientific instruments. As such, rather than being recognised as a pioneer of telescope-making in New Zealand he should be remembered as the founder of New Zealand theatre.

  10. A citation analysis of Henri Tajfel's work on intergroup relations.

    PubMed

    Dumont, Kitty; Louw, Johann

    2009-02-01

    The late Henri Tajfel (1919-1982) is one of the central figures who shaped the development of post-war European social psychology. His contributions range from the establishment of an infrastructure for a European social psychology, and the start of a new intellectual movement within social psychology, to the formulation of a set of concepts addressing intergroup relations that were finally integrated into Social Identity Theory. The present study provides an empirical examination of Tajfel's contribution to intergroup research over the last 30 years via a citation analysis of five journals: the Journal of Personality and Social Psychology, the British Journal of Social Psychology, the European Journal of Social Psychology, the South African Journal of Psychology, and the German Journal of Social Psychology (Zeitschrift für Sozialpsychologie). The results indicate that Tajfel's work on intergroup relations is increasingly cited, especially since the 1990s, and the international recognition of his work is substantial. Three possible reasons for the recognition his work still enjoys are proposed: its potential to generate theoretical and empirical controversies; its explanatory power; and the extent to which his work is used as a referential framework. PMID:22029442

  11. Henry Duret (1849-1921): a surgeon and forgotten neurologist.

    PubMed

    Walusinski, Olivier; Courrivaud, Philippe

    2014-01-01

    Henri Duret (1849-1921) was a surgeon whose training started in the laboratory of Jean-Martin Charcot and Alfred Vulpian at La Salpêtrière in 1874. Using injections of colored gelatine, Duret was the first to describe the distribution of supply arteries in the brainstem and then in the cortex. His descriptions correlated irrigated territories, infarcted zones and secondary neurological deficits. He focused his 1878 thesis on experimental studies of brain trauma and localized the origin of disturbances in autonomic function and vigilance to the brainstem. He linked these disturbances to microhemorrhages affecting the medulla and pons, which are now known as Duret hemorrhages. Over 40 years, he authored numerous publications on digestive and gynecological surgery and on teaching in these areas. In 1905, another of his innovative works was published, which covered brain tumours, their clinical manifestations, the pathophysiological consequences of intracranial hypertension and the corresponding surgical treatments. This little-known treatise is in fact a pioneering work in neurosurgery, published well before the more familiar works of Victor Horsley and Harvey Cushing. PMID:25227400

  12. Genetic Analysis of the Henry Mountains Bison Herd

    PubMed Central

    du Toit, Johan T.; Derr, James

    2015-01-01

    Wild American plains bison (Bison bison) populations virtually disappeared in the late 1800s, with some remnant animals retained in what would become Yellowstone National Park and on private ranches. Some of these private bison were intentionally crossbred with cattle for commercial purposes. This forced hybridization resulted in both mitochondrial and nuclear introgression of cattle genes into some of the extant bison genome. As the private populations grew, excess animals, along with their history of cattle genetics, provided founders for newly established public bison populations. Of the US public bison herds, only those in Yellowstone and Wind Cave National Parks (YNP and WCNP) appear to be free of detectable levels of cattle introgression. However, a small free-ranging population (~350 animals) exists on public land, along with domestic cattle, in the Henry Mountains (HM) of southern Utah. This isolated bison herd originated from a founder group translocated from YNP in the 1940s. Using genetic samples from 129 individuals, we examined the genetic status of the HM population and found no evidence of mitochondrial or nuclear introgression of cattle genes. This new information confirms it is highly unlikely for free-living bison to crossbreed with cattle, and this disease-free HM bison herd is valuable for the long-term conservation of the species. This bison herd is a subpopulation of the YNP/WCNP/HM metapopulation, within which it can contribute significantly to national efforts to restore the American plains bison to more of its native range. PMID:26673758

  13. Genetic Analysis of the Henry Mountains Bison Herd.

    PubMed

    Ranglack, Dustin H; Dobson, Lauren K; du Toit, Johan T; Derr, James

    2015-01-01

    Wild American plains bison (Bison bison) populations virtually disappeared in the late 1800s, with some remnant animals retained in what would become Yellowstone National Park and on private ranches. Some of these private bison were intentionally crossbred with cattle for commercial purposes. This forced hybridization resulted in both mitochondrial and nuclear introgression of cattle genes into some of the extant bison genome. As the private populations grew, excess animals, along with their history of cattle genetics, provided founders for newly established public bison populations. Of the US public bison herds, only those in Yellowstone and Wind Cave National Parks (YNP and WCNP) appear to be free of detectable levels of cattle introgression. However, a small free-ranging population (~350 animals) exists on public land, along with domestic cattle, in the Henry Mountains (HM) of southern Utah. This isolated bison herd originated from a founder group translocated from YNP in the 1940s. Using genetic samples from 129 individuals, we examined the genetic status of the HM population and found no evidence of mitochondrial or nuclear introgression of cattle genes. This new information confirms it is highly unlikely for free-living bison to crossbreed with cattle, and this disease-free HM bison herd is valuable for the long-term conservation of the species. This bison herd is a subpopulation of the YNP/WCNP/HM metapopulation, within which it can contribute significantly to national efforts to restore the American plains bison to more of its native range. PMID:26673758

  14. Cosmic microwave background with Brans-Dicke gravity. II. Constraints with the WMAP and SDSS data

    NASA Astrophysics Data System (ADS)

    Wu, Feng-Quan; Chen, Xuelei

    2010-10-01

    Using the covariant formalism developed in a companion paper [F.-Q. Wu, L. E. Qiang, X. Wang, and X. Chen, preceding Article, Phys. Rev. DPRVDAQ1550-7998 82, 083002 (2010)] (paper I), we derive observational constraints on the Brans-Dicke model in a flat Friedmann-Lemaître-Robertson-Walker universe with a cosmological constant and cold dark matter. The CMB observations we use include the Wilkinson Microwave Anisotropy Probe 5 yr data, the Arcminute Cosmology Bolometer Array Receiver 2007 data, the Cosmic Background Imager polarization data, and the Balloon Observations of Millimetric Extragalactic Radiation and Geophysics 2003 flight data. For the large scale structure we use the matter power spectrum data measured with the luminous red galaxy survey of the Sloan Digital Sky Survey Data Release 4. We parametrize the Brans-Dicke parameter ω with a new parameter ζ=ln⁡(1/ω+1), and use the Markov-Chain Monte Carlo method to explore the parameter space. We find that using CMB data alone, one could place some constraints on positive ζ or ω, but negative ζ or ω could not be constrained effectively. However, with additional large scale structure data, one could break the degeneracy at ζ<0. The 2σ (95.5%) bound on ζ is -0.00837<ζ<0.01018 (corresponding to ω<-120.0 or ω>97.8). We also obtained constraints on G˙/G, the rate of change of G at present, as -1.75×10-12yr-1

  15. [Hypospadia and infertility of Henry II of France (1519-1559)].

    PubMed

    Hatzinger, M; Al-Shajlawi, S; Sohn, M

    2014-03-01

    Henry II (1519-1559) of France was the second son of Francis I (1494-1547) and Claude de France (1498-1524) born in 1519 in St. Germain-en-Laye. After his older brother's and his father's death in 1547, he was anointed the French king in Reims. In 1533 already, as a 14-year-old boy, for reasons of state, he was married to the same aged Catherine de Medici (1519-1589), as her uncle was Pope Clement VII (1478-1534). The marriage remained childless for 11 years since Henry, due to a distinct hypospadia and a completely sexually inexperienced wife was unable to conceive children with her. His existing liaison to Diane de Poitiers (1499-1566) - a 19-year-older maid of honor of his father Francis I from 1537 until his death - influenced his sexual life immensely.The blame for the childless marriage was placed primarily on his wife, as Henry had become father of an illegitimate daughter with a mistress. Catherine then underwent all possible medical and alchemical procedures to finally give birth to the hoped Dauphin. Ironically, her rival for the favor of her husband, Diane de Poitiers was one of her greatest allies. She made clear that the cause lay with Henry and not with his wife. This was confirmed by the added solid physician Jean Fernel (1497-1558). His treatment of Henry and the simultaneous training of the unexperienced Catherine by Diane de Poitiers led to success.The result was the birth of Francis II (1544-1560) in 1544, the first of 10 children in 12 years. Thus, the dynasty was saved. After the death of Henry in a tragic tournament accident in 1559, three of his sons became kings of France. But the line of Valois remained without further descendants and was continued by Henry IV, the first Bourbon king in 1589. PMID:24585117

  16. The Works of Henry Moseley, 1887-1915

    NASA Astrophysics Data System (ADS)

    Scerri, Eric

    2013-04-01

    In 1913 Henry Moseley, an unknown young English physicist published an article in the Philosophical Magazine under the title of ``The High Frequency Spectra of the Elements.'' The 10-page article was to have far reaching implications in both chemistry and physics and helped to resolve a major conundrum in the periodic table of the elements. The talk will briefly examine the life and work of Moseley who died tragically while fighting in the trenches of World War I in 1915. The build-up to the discovery of atomic number took several different avenues including contributions from Rutherford and Barkla. However the more direct motivation for Moseley's work, as he readily acknowledged, were the articles of an unknown Dutch econometrician Anton Van den Broek who attempted to improve on Mendeleev's periodic table. Moseley began as a student of Rutherford at Manchester and took a keen interest in the development of research using X-rays following the work of Roentgen, von Laue and Bragg. Although Rutherford was at first reluctant to enter this new field he soon yielded to young Moseley's request and sent him to Leeds for brief training with Bragg. On returning to Manchester, Moseley devised an ingenious apparatus in which a set of metal samples could be rotated so as to become the target for a beam of electrons in order to measure the frequencies of the emitted K X-rays. The first set of such experiments used nine successive elements in the periodic table, from titanium to zinc. Moseley's now immense fame rests with the results of this study as well as a subsequent one which extended the study into a further 30 elements, in addition to the use that his method was put to by himself as well as subsequent chemists and physicists.

  17. A novel β-glucan produced by Paenibacillus polymyxa JB115 induces nitric oxide production in RAW264.7 macrophages

    PubMed Central

    Chang, Zhi-Qiang; Lee, Joong-Su; Hwang, Mi-Hyun; Hong, Joo-Heon; Jung, Hee-Kyoung; Lee, Sam-Pin

    2009-01-01

    The effect of extracellular β-(1→3), (1→6)-glucan, produced by Paenibacillus polymyxa JB115, on nitric oxide (NO) production in RAW264.7 macrophages was investigated. β-glucan induced the production of NO by RAW264.7 macrophages in a concentration- and time-dependent manner. Moreover, β-glucan stimulation increased the mRNA expression of iNOS, COX-2 and IL-6 in RAW264.7 macrophages in a concentration-dependent manner. PMID:19461214

  18. On the Non- k-Separability of Dicke Class of States and N-Qudit W States

    NASA Astrophysics Data System (ADS)

    Ananth, N.; Senthilvelan, M.

    2016-03-01

    In this paper, we present the separability criteria to identify non- k-separability and genuine multipartite entanglement in mixed multipartite states using elements of density matrices. Our criteria can detect the non- k-separability of Dicke class of states, anti W states and mixtures thereof and higher dimensional W class of states. We then investigate the performance of our criteria by considering N-qubit Dicke states with arbitrary excitations added with white noise and mixture of N-qudit W state with white noise. We also study the robustness of our criteria against white noise. Further, we demonstrate that our criteria are experimentally implementable by means of local observables such as Pauli matrices and generalized Gell-Mann matrices.

  19. Interaction of Gravitational field and Brans-Dicke field in R/W universe containing Dark Energy like fluid

    NASA Astrophysics Data System (ADS)

    Priyokumar Singh, Kangujam; Manihar Singh, Koijam; Dewri, Mukunda

    2016-04-01

    On studying some new models of Robertson-Walker universes with a Brans-Dicke scalar field, it is found that most of these universes contain a dark energy like fluid which confirms the present scenario of the expansion of the universe. In one of the cases, the exact solution of the field equations gives a universe with a false vacuum, while in another it reduces to that of dust distribution in the Brans-Dicke cosmology when the cosmological constant is not in the picture. In one particular model it is found that the universe may undergo a Big Rip in the future, and thus it will be very interesting to investigate such models further.

  20. Five-dimensional Brans-Dicke M 1 R 3 S 1 cosmology with chameleon scalar field

    NASA Astrophysics Data System (ADS)

    El-Nabulsi, Ahmad Rami

    2010-05-01

    We investigate five-dimensional Brans-Dicke cosmology with spacetime described by the homogeneous, anisotropic and flat spacetime with the topology M 1 R 3 S 1 where S 1 is taken in the form of a circle. We conjecture throughout this letter that the extra-dimension compactifies as the visible dimensions expand like b( t)? a -1( t) and that the non-minimal coupling between the scalar field and the matter is of the form f( ?) ? ? 2. The model gives rise to a transition from a decelerated epoch to an accelerated epoch for large values of the Brans-Dicke parameter ?. The model predicts crossing of the phantom divided barrier unless the universe is governed by a growing matter field.

  1. A Derivation of the Dick Effect from Control-Loop Models for Periodically Interrogated Passive Frequency Standards

    NASA Technical Reports Server (NTRS)

    Greenhall, Charles A.

    1996-01-01

    The phase of a frequency standard that uses periodic interrogation and control of a local oscillator (LO) is degraded by a long-term random-walk component induced by downconversion of LO noise into the loop passband. The Dick formula for the noise level of this degradation can be derived from explicit solotions of two LO control-loop models. A summary of the derivations is given here.

  2. Solute and heat transport model of the Henry and hilleke laboratory experiment.

    PubMed

    Langevin, Christian D; Dausman, Alyssa M; Sukop, Michael C

    2010-01-01

    SEAWAT is a coupled version of MODFLOW and MT3DMS designed to simulate variable-density ground water flow and solute transport. The most recent version of SEAWAT, called SEAWAT Version 4, includes new capabilities to represent simultaneous multispecies solute and heat transport. To test the new features in SEAWAT, the laboratory experiment of Henry and Hilleke (1972) was simulated. Henry and Hilleke used warm fresh water to recharge a large sand-filled glass tank. A cold salt water boundary was represented on one side. Adjustable heating pads were used to heat the bottom and left sides of the tank. In the laboratory experiment, Henry and Hilleke observed both salt water and fresh water flow systems separated by a narrow transition zone. After minor tuning of several input parameters with a parameter estimation program, results from the SEAWAT simulation show good agreement with the experiment. SEAWAT results suggest that heat loss to the room was more than expected by Henry and Hilleke, and that multiple thermal convection cells are the likely cause of the widened transition zone near the hot end of the tank. Other computer programs with similar capabilities may benefit from benchmark testing with the Henry and Hilleke laboratory experiment. PMID:19563419

  3. Henry's law determinations for aqueous solutions of hydrogen peroxide, methylhydroperoxide, and peroxyacetic acid

    NASA Astrophysics Data System (ADS)

    Lind, John A.; Kok, Gregory L.

    1986-06-01

    The Henry's law constants for aqueous solutions of hydrogen peroxide, methylhydroperoxide, and peroxyacetic acid were measured over the temperature range 278°-293°K. These determinations were made by measuring the vapor pressure of the peroxide in a gas stream of nitrogen or air that was in equilibrium with a solution of known peroxide concentration. The aqueous phase concentrations ranged from 5 × 10-5 M to 5 × 10-3 M for hydrogen peroxide, and from 1 × 10-6 M to 1 × 10-4 M for methylhydroperoxide and peroxyacetic acid. In all cases, Henry's law was obeyed over the concentration range investigated. The temperature dependence of the Henry's law constant is expressed by KH = e[A/T-B], where KH is in the units of molar concentration per atm, and T is in degrees Kelvin. The coefficients' values are A = 6621, B = 11.00 for hydrogen peroxide; A = 5607, B = 13.41 for methylhydroperoxide; and A = 6171, B = 14.55 for peroxyacetic acid. The experimental errors on KH at the 95% confidence level are ±8.3% for hydrogen peroxide, ±11% for methylhydroperoxide, and ±17% for peroxyacetic acid. In addition, the Henry's law behavior of hydrogen peroxide in aqueous solutions of sulfuric acid and ammonium sulfate was investigated. The Henry's law constant of hydrogen peroxide decreased with increasing sulfuric acid concentration and increased with increasing ammonium sulfate concentration.

  4. Assessment of water-quality conditions in the J.B. Converse Lake watershed, Mobile County, Alabama, 1990-98

    USGS Publications Warehouse

    Journey, Celeste A.; Gill, Amy C.

    2001-01-01

    J.B. Converse (Converse) Lake is a 3,600-acre, tributary-storage reservoir in Mobile County, southwestern Alabama. The lake serves as the primary drinking-water supply for the city of Mobile. The Converse Lake watershed lies within the Coastal Plain Physiographic Province. Semiconsolidated to unconsolidated sediments of sand, silt, gravel, and clay underlie the watershed, and are covered by acidic soils. Land use in the watershed is mainly forest (64 percent) and agriculture (31 percent). Residential and commercial development account for only 1 percent of the total land use in the watershed. Converse Lake receives inflow from seven major tributaries. The greatest inflows are from Big Creek, Crooked Creek, and Hamilton Creek that had mean annual streamflows of 72.2, 19.4, and 25.0 cubic feet per second, respectively, for the period 1990 to 1998, which represents about 72 percent of the total annual streamflow to the lake. The total mean annual inflow to the lake is estimated to be about 163 cubic feet per second. In general, water quality in Converse Lake and its tributaries meets the criteria established by the Alabama Department of Environmental Management (ADEM) for drinking-water supplies, whole-body contact, and aquatic life. The exceptions include acidic pH levels, iron and manganese levels above secondary or aesthetic criteria, and fecal bacterial levels in some tributaries above whole-body contact (swimmable) criteria. The pH levels throughout the watershed were commonly below the criteria level of 6.0, but this appears to have been a naturally occurring phenomenon caused by poorly buffered soil types, resistant sediments, and forested land use. Median iron and manganese levels were above aesthetic criteria levels of 300 and 50 micrograms per liter, respectively, in some tributaries. All tributary sites in the Converse Lake watershed had median and minimum dissolved-oxygen concentrations above the ADEM criteria level of 5 milligrams per liter except for Boggy Branch, which had a minimum dissolved-oxygen concentration of 3.7 milligrams per liter. The degree to which nutrient contributions from tributaries were causing nutrient enrichment and eutrophication in Converse Lake was assessed. Trend analysis detected little or no change in nutrient concentrations at the tributary and lake sites in the Converse Lake watershed from the 1991 to 1998 water years. Nutrient concentrations at most tributary sites exhibited a significant, positive relation with streamflow that indicated the dominant source of nutrient input to the watershed is from nonpoint contributions. From 1990 to 1998, computed mean annual loads of 75,400 kilograms of total nitrogen, 36,950 kilograms of total Kjeldahl nitrogen, 28,870 kilograms of total inorganic nitrogen, and 3,480 kilograms of total phosphorus were contributed to the lake by Big Creek, Hamilton Creek, and Crooked Creek combined. These mean annual loads of nutrients corresponded to borderline eutrophic/mesotrophic conditions in the lake. Of the combined loads, 62 percent of the total nitrogen, 70 percent of the total Kjeldahl nitrogen, 54 percent of the total inorganic nitrogen, and 47 percent of the total phosphorus originated from the forested subbasin of Big Creek. The more residential and agricultural subbasins of Crooked Creek and Hamilton Creek, however, yielded over twice the total phosphorus load per hectare of land use. Crooked and Hamilton Creek subbasins also had higher yields of the more bioavailable total inorganic nitrogen. A simplistic empirical model could not explain the relation between year-to-year nutrient contributions to Converse Lake from the tributaries and the lake's ability to assimilate those contributions. The potential presence of pathogens in the lake and its tributaries was assessed based on fecal bacterial concentrations. Fecal bacterial concentrations at some tributary sites were above existing criteria for swimmable uses. Contributions of fecal bacte

  5. Human Heat shock protein 40 (Hsp40/DnaJB1) promotes influenza A virus replication by assisting nuclear import of viral ribonucleoproteins

    PubMed Central

    Batra, Jyoti; Tripathi, Shashank; Kumar, Amrita; Katz, Jacqueline M.; Cox, Nancy J.; Lal, Renu B.; Sambhara, Suryaprakash; Lal, Sunil K.

    2016-01-01

    A unique feature of influenza A virus (IAV) life cycle is replication of the viral genome in the host cell nucleus. The nuclear import of IAV genome is an indispensable step in establishing virus infection. IAV nucleoprotein (NP) is known to mediate the nuclear import of viral genome via its nuclear localization signals. Here, we demonstrate that cellular heat shock protein 40 (Hsp40/DnaJB1) facilitates the nuclear import of incoming IAV viral ribonucleoproteins (vRNPs) and is important for efficient IAV replication. Hsp40 was found to interact with NP component of IAV RNPs during early stages of infection. This interaction is mediated by the J domain of Hsp40 and N-terminal region of NP. Drug or RNAi mediated inhibition of Hsp40 resulted in reduced nuclear import of IAV RNPs, diminished viral polymerase function and attenuates overall viral replication. Hsp40 was also found to be required for efficient association between NP and importin alpha, which is crucial for IAV RNP nuclear translocation. These studies demonstrate an important role for cellular chaperone Hsp40/DnaJB1 in influenza A virus life cycle by assisting nuclear trafficking of viral ribonucleoproteins. PMID:26750153

  6. Temperature-Dependent Henry's Law Constants of Atmospheric Amines.

    PubMed

    Leng, Chunbo; Kish, J Duncan; Roberts, Jason E; Dwebi, Iman; Chon, Nara; Liu, Yong

    2015-08-20

    There has been growing interest in understanding atmospheric amines in the gas phase and their mass transfer to the aqueous phase because of their potential roles in cloud chemistry, secondary organic aerosol formation, and the fate of atmospheric organics. Temperature-dependent Henry's law constants (KH) of atmospheric amines, a key parameter in atmospheric chemical transport models to account for mass transfer, are mostly unavailable. In this work, we investigated gas-liquid equilibria of five prevalent atmospheric amines, namely 1-propylamine, di-n-propylamine, trimethylamine, allylamine, and 4-methylmorpholine using bubble column technique. We reported effective KH, intrinsic KH, and gas phase diffusion coefficients of these species over a range of temperatures relevant to the lower atmosphere for the first time. The measured KH at 298 K and enthalpy of solution for 1-propylamine, di-n-propylamine, trimethylamine, allylamine, and 4-methylmorpholine are 61.4 ± 4.9 mol L(-1) atm(-1) and -49.0 ± 4.8 kJ mol(-1); 14.5 ± 1.2 mol L(-1) atm(-1) and -72.5 ± 6.8 kJ mol(-1); 8.9 ± 0.7 mol L(-1) atm(-1) and -49.6 ± 4.7 kJ mol(-1); 103.5 ± 10.4 mol L(-1) atm(-1) and -42.7 ± 4.3 kJ mol(-1); and 952.2 ± 114.3 mol L(-1) atm(-1) and -82.7 ± 9.7 kJ mol(-1), respectively. In addition, we evaluated amines' characteristic times to achieve gas-liquid equilibrium for partitioning between gas and aqueous phases. Results show gas-liquid equilibrium can be rapidly established at natural cloud droplets surface, but the characteristic times may be extended substantially at lower temperatures and pHs. Moreover, our findings imply that atmospheric amines are more likely to exist in cloud droplets, and ambient temperature, water content, and pH of aerosols play important roles in their partitioning. PMID:26200814

  7. [Henry Toussaint and Louis Pasteur. Rivalry over a vaccine].

    PubMed

    Chevallier-Jussiau, Nadine

    2010-01-01

    Henry Toussaint (1847-1890) is a veterinary who studied in Veterinary School of Lyon with his great master Auguste Chauveau the famous physiologist. This place is the First School founded in Europe at the end of the XVIIIth century and has opened a way of thinking. His carrer brilliant and rich begins first in Lyon and then when he is named Professor of Anatomy and Physiology at the Veterinary School of Toulouse. Doctor of Science and Doctor of Medecine Toussaint applies "the experimental method" to his research in his laboratory and makes a lot of publications. He starts with Anatomy, then Physiology and soon he prioritizes his research to infestious diseases which cause serious damage to cattle in this time. He developes his own methods about anthrax an its "bacteridie", its nature, its way of culture and especially he studies the physiopathology of this disease. Pasteur is a renowned scientist who does study Microbiology at the same time in his laboratory in Paris, and precisely anthrax. He has explained his theories about "microbes" and has predominant advice. Toussaint admires Pasteur; in the year 1879 he finds first and isolates the microbe of "cholera des poules" (now Pasteurella) and gives Pasteur this new germ which will be used by Pasteur for his particular works about reducing of virulence by successive subcultures. In 1880 with his publishing on July 12 at the Academy of Science, Toussaint presents his successful result with an attenuated vaccine against anthrax: he has got protection against anthrax for dogs and sheep by using a vaccine which he has reduced off virulence by chemical manner. Academy congratulates him. Pasteur jealous of one's reputation contests the demonstration of Toussaint because he does not believe in the chemical method too different from his tests but will make use of this method for an experience open to the public in Pouilly-le-Fort in 1881. After this promotional event Pasteur will product and sell vaccines maked in his laboratory in Paris with the first chemical method of Toussaint. Pasteur gets glory and money. In the following time Toussaint tries another research on tuberculosis but soon he feels the first attacks of a neurologic illness and inescapably his mind declines until the death in 1890. PMID:20527335

  8. Annie Jump Cannon: `` Life after The Henry Draper Catalogue.''

    NASA Astrophysics Data System (ADS)

    Welther, B. L.

    1993-05-01

    Seventy-five years ago the first three volumes of The Henry Draper Catalogue were published. The pages printed in 1918 contain the spectral types, revised magnitudes, and updated positions for more than 77,000 stars. For the nine volumes of the catalogue, Cannon classified spectra for 225,300 stars; and in her lifetime, spectra for almost 400,000 stars. This work netted her half a dozen honorary degrees, the Draper Medal of the NAS, and numerous other prizes and honors. In his preface to Volume 1, Edward Pickering noted that it took two years to process the copy for the initial volumes and estimated that it would take two more years to complete the copy for the remaining volumes. But shortly after he wrote the preface for Volume 3 in December 1918, Pickering died. And it proved to take three times as long as he had predicted to complete the publication of all nine volumes of the catalogue by the spring of 1924. Although Cannon had enjoyed much more independence and status than the other women at HCO, she had looked to Pickering for guidance and financial support for her astronomical projects. Without him, she had to develop other resources and also had to represent the Harvard Classification for the first IAU meeting in Rome in 1922. Although she did not attend the meeting, she corresponded with Frederick Seares at Mount Wilson Observatory about various questions that astronomers had raised about classifying spectra. Meanwhile, in 1921 Harlow Shapley was appointed Director of HCO. He oversaw the publication of the final volumes of the HD and encouraged Cannon to extend it for stars in special regions. For the HD Extension, he hired Margaret Walton to assist Cannon. But the cost of labor to determine positions and magnitudes was prohibitive, so for many stars the HDE lists only the BD number and spectral type. Even that format proved too costly in the depression and war years. Consequently, the last volume of the HDE was published as charts after World War II.

  9. Agreement Between the Board of Trustees of Henry Ford Community College and the Henry Ford Community College Federation of Teachers, American Federation of Teachers, Local 1650, 1973-75.

    ERIC Educational Resources Information Center

    Henry Ford Community Coll., Dearborn, MI.

    This agreement between the Board of Trustees of Henry Ford Community College and the Henry Ford Community College Federation of Teachers, American Federation of Teachers, Local 1650 covers the period of 1973-1975. Contents of the agreement cover recognition, board of trustee rights, union-board relations, conditions of employment, seniority, the…

  10. Agreement between the Board of Trustees of Henry Ford Community College and the Henry Ford Community College Federation of Teachers, American Federation of Teachers Local 1650, 1987-1990.

    ERIC Educational Resources Information Center

    Henry Ford Community Coll., Dearborn, MI.

    This collective bargaining agreement between the Board of Trustees of Henry Ford Community College and the Henry Ford Community College Federation of Teachers establishes conditions of employment for all full-time teachers, counselors, librarians, placement officers, and selected other professional personnel. The articles in the agreement set…

  11. Economics and feasibility of co-composting solid waste in McHenry County. Final report

    SciTech Connect

    Alpert, J.

    1987-07-01

    The purpose of the study was to evaluate the feasibility of composting various segments of the waste stream produced in McHenry County, IL. In particular, the study emphasized co-composting of municipal solid waste (MSW) with septage, co-composting of MSW with septage and sludge, leaf- and yard-waste composting, and composting various animal wastes. In addition to specific analysis of co-composting in McHenry, the report includes chapters on the technical description and implementation of composting, environmental considerations of co-composting, comparisons of different proprietary systems, the economics of composting, and an analysis of compost markets.

  12. Henry`s law gas-solid chromatography and correlations of virial coefficients for hydrocarbons, chlorofluorocarbons, ethers, and sulfur hexafluoride adsorbed onto carbon

    SciTech Connect

    Rybolt, T.R.; Epperson, M.T.; Weaver, H.W.; Thomas, H.E.; Clare, S.E.; Manning, B.M.; McClung, J.T.

    1995-07-01

    Gas-solid chromatography was used to determine the Henry`s law second gas-solid virial coefficients within the temperature range of 314--615 K for ethane, propane, butane, isobutane, pentane, hexane, heptane, chloromethane, dichloromethane, trichloromethane, tetrachloromethane, trichlorofluoromethane (Freon 11), chlorodifluoromethane (Freon 22), dichlorodifluoromethane (Freon 12), methyl ether, ethyl ether, and sulfur hexafluoride with Carbopack B, a microporous carbon adsorbent. The temperature dependence of the second gas-solid virial coefficients of these adsorbates was used in conjunction with analyses based on a graphical method, a single-surface numeric integration method, a single-surface analytic expression method, and a two-surface analytic expression method to determine the gas-solid interaction energies and other parameters. The interaction energies were correlated with a ratio of the critical temperature divided by the square root of the critical pressure. The four methods were compared in their abilities to successfully calculate second gas-solid virial coefficient values.

  13. Basic Assumptions in the Virginia Ratification Debates: Patrick Henry vs. James Madison on the Nature of Man and Reason.

    ERIC Educational Resources Information Center

    Einhorn, Lois

    The identifiably different rhetorical behaviors of Patrick Henry and James Madison, as expressed in their Virginia debates, reflect each man's philosophical view of human nature and the role of reason in human behavior. Patrick Henry, expressing the pessimism of Calvinistic tradition, believed that people are intrinsically evil with a dominant…

  14. 76 FR 50171 - Notice of Intent To Prepare an Environmental Impact Statement for the Henrys Fork Salinity...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-12

    ... the Henrys Fork Salinity Control Project Plan, Sweetwater and Uinta Counties, WY; Daggett and Summit... Statement (EIS) for the Henrys Fork Salinity Control Project Plan (SCPP). The NRCS will be the lead agency... Improvements'' alternative assumes a salinity control project will be implemented. Existing financial...

  15. Basic Assumptions in the Virginia Ratification Debates: Patrick Henry vs. James Madison on the Nature of Man and Reason.

    ERIC Educational Resources Information Center

    Einhorn, Lois

    The identifiably different rhetorical behaviors of Patrick Henry and James Madison, as expressed in their Virginia debates, reflect each man's philosophical view of human nature and the role of reason in human behavior. Patrick Henry, expressing the pessimism of Calvinistic tradition, believed that people are intrinsically evil with a dominant

  16. Critical exponent of a quantum-noise-driven phase transition: The open-system Dicke model

    SciTech Connect

    Nagy, D.; Szirmai, G.; Domokos, P.

    2011-10-15

    The quantum phase transition of the Dicke model has been observed recently in a system formed by motional excitations of a laser-driven Bose-Einstein condensate coupled to an optical cavity [Baumann et al., Nature (London) 464, 1301 (2010)]. The cavity-based system is intrinsically open: photons leak out of the cavity where they are detected. Even at zero temperature, the continuous weak measurement of the photon number leads to an irreversible dynamics toward a steady state. In the framework of a generalized Bogoliubov theory, we show that the steady state exhibits a dynamical quantum phase transition. We find that the critical point and the mean field are only slightly modified with respect to the phase transition in the ground state. However, the critical exponents of the singular quantum correlations are significantly different in the two cases. There is also a drastic modification of the atom-field entanglement, since the divergence of the logarithmic negativity of the ground state at the critical point is suppressed and a finite entanglement is found in the steady state.

  17. Brans-Dicke cosmology in 4D from scalar-vacuum in 5D

    NASA Astrophysics Data System (ADS)

    Ponce de Leon, J.

    2010-03-01

    We show that Brans-Dicke (BD) theory in 5D may explain the present cosmic accelerated expansion without recurring to matter fields in 5D or dark energy in 4D. Without making any assumption on the nature of the extra coordinate or the matter content in 5D, here we demonstrate that the vacuum BD field equations in 5D are equivalent, on every hypersurface orthogonal to the extra dimension, to a BD theory in 4D with a self interacting potential and an effective matter field. The potential is not introduced by hand, instead the reduction procedure provides an expression that determines its shape up to a constant of integration. It also establishes the explicit formulae for the effective matter in 4D. In the context of FRW cosmologies, we show that the reduced BD theory gives rise to models for accelerated expansion of a matter-dominated universe which are consistent with current observations and with a decelerating radiation-dominated epoch.

  18. Expanding (n+1)-dimensional wormhole solutions in Brans-Dicke cosmology

    SciTech Connect

    Ebrahimi, E.; Riazi, N.

    2010-01-15

    We have obtained two classes of (n+1)-dimensional wormhole solutions using a traceless energy-momentum tensor in the Brans-Dicke theory of gravity. The first class contains wormhole solutions in an open geometry, while the second contains wormhole solutions in both open and closed universes. In addition to wormhole geometries, naked singularities and maximally symmetric space-time also appear among the solutions as special cases. We have also considered the traversability of the wormhole solutions and have shown that they are indeed traversable. Finally, we have discussed the energy-momentum tensor which supports this geometry and have checked for the energy conditions. We have found that wormhole solutions in the first class of solutions violate the weak energy condition (WEC). In the second class, the wormhole geometries in a closed universe do violate the WEC, but in an open universe with a suitable choice of constants the supporting matter energy-momentum tensor can satisfy the WEC. However, even in this case the full effective energy-momentum tensor including the scalar field and the matter energy-momentum tensor still violates the WEC.

  19. Dynamical many-body phases of the parametrically driven, dissipative Dicke model

    NASA Astrophysics Data System (ADS)

    Chitra, R.; Zilberberg, O.

    2015-08-01

    Control and manipulation of quantum engineered systems allows for the utilization of time-dependent parametric modulations for accessing novel out-of-equilibrium phenomena. In the absence of such driving, the dissipative Dicke model exhibits a fascinating out-of-equilibrium many-body phase transition as a function of a coupling between a driven photonic cavity and numerous two-level atoms. We study the effect of a parametric modulation of this coupling and discover a rich phase diagram as a function of the modulation strength. We find that in addition to the established normal and super-radiant phases, a new phase with pulsed superradiance, which we term dynamical normal phase, appears when the system is parametrically driven. Employing different methods, we characterize the different phases and the transitions between them. Specific heed is paid to the role of dissipation in determining the phase boundaries. Our analysis paves the road for the experimental study of dynamically stabilized phases of interacting light and matter.

  20. Enter the Madcap Prince of Wales: Students Directing "Henry IV, Part I."

    ERIC Educational Resources Information Center

    Earthman, Elise Ann

    1993-01-01

    Argues that William Shakespeare's "Henry IV, Part I" is an appropriate and useful text for secondary English classrooms. Shows how the play lends itself to performance-based instruction. Outlines ways of accomplishing student engagement, using film versions, and assigning written work. (HB)

  1. Neostusakia, a new name for preoccupied Stusakia Kment and Henry, 2008 (Hemiptera: Heteroptera: Berytidae)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A case of homonymy in the heteropteran family Berytidae is addressed. The genus Stusakia Kment and Henry, 2008 (Hemiptera) is preoccupied by Stusakia Frýda, 1998 (Mollusca: Gastropoda). As a consequence, the replacement name Neostusakia, new name, is proposed. In addition, the only two included s...

  2. Henri Matisse: Color and Light. Teacher's Guide. School Arts: Looking/Learning.

    ERIC Educational Resources Information Center

    Brenner, Carla

    Henri Matisse painted "Open Window, Collioure" in the summer of 1905, when he and Andre Derain worked together in Collioure (France), a small Mediterranean fishing port near the Spanish border. This teaching guide discusses the painting "Open Window, Collioure" and Matisse's use of light and vibrant color. The guide provides information on…

  3. Hispanic Storyteller: Unity through the Use of Narrative in the Speaking of Henry Cisneros.

    ERIC Educational Resources Information Center

    Hanson, Trudy L.

    Henry Cisneros, speaking on the theme, "the colorful past and promising future of Hispanic heroes in Texas," in Amarillo, Texas, on February 7, 1989, was successful in eliciting a positive response from his Anglo/Hispanic audience. An analysis of Cisneros' use of narrative demonstrates its effectiveness in leading to a feeling of "community" by…

  4. Henry David Thoreau: American Transcendentalism and the Implications for Rhetoric in American Civic Education.

    ERIC Educational Resources Information Center

    Grapsy, Ronald P., Jr.

    The American Philosopher Henry David Thoreau provides modern students an important perspective on the state and operation of democratic institutions and society. Many critics of his philosophy cite the author's inability to live up to his articulated tenets as grounds to dismiss the exhortative writings as idealistic and implausible. This essay…

  5. Mounting a Curricular Revolution: An Interview with Henry Louis Gates, Jr.

    ERIC Educational Resources Information Center

    von Zastrow, Claus

    2009-01-01

    This article presents an interview with Henry Louis Gates, Jr., Harvard professor and cultural critic who has captured 25 million viewers with his PBS documentary series, African American Lives (WNET). Using genealogical research and DNA science, Gates traces the family history of 19 famous African Americans. What results is a rich and moving

  6. COASTAL CONDITIONS IN THE VIRGINIAN PROVINCE (CAPE COD TO CAPE HENRY)

    EPA Science Inventory

    The U.S. EPA Environmental Monitoring and Assessment Program (EMAP) collected ecological condition data during 1990 through 1993 from the estuarine waters of the Virginian Biogeographic Province (Cape Henry to Cape Cod) to answer broad-scale questions on environmental conditions...

  7. The Heuristic Method, Precursor of Guided Inquiry: Henry Armstrong and British Girls' Schools, 1890-1920

    ERIC Educational Resources Information Center

    Rayner-Canham, Geoff; Rayner-Canham, Marelene

    2015-01-01

    Though guided-inquiry learning, discovery learning, student-centered learning, and problem-based learning are commonly believed to be recent new approaches to the teaching of chemistry, in fact, the concept dates back to the late 19th century. Here, we will show that it was the British chemist, Henry Armstrong, who pioneered this technique,…

  8. Pickering, Edward Charles (1846-1919) and Pickering, William Henry (1858-1938)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    Astronomers—two brothers. Born in Boston, MA, Edward became director of the Harvard College Observatory and observed the brightnesses of 45 000 stars. He hired a number of women, including WILLIAMINA P FLEMING, ANNIE J CANNON, Antonia Maury and HENRIETTA LEAVITT, and produced the Henry Draper Catalog, classifying the spectra of hundreds of thousands of stars. He and HERMANN CARL VOGEL independent...

  9. Fort McHenry National Monument and Historic Shrine. Teacher's Guide.

    ERIC Educational Resources Information Center

    Rogers, Jim

    This teacher's guide explores Fort McHenry and the British attack on Baltimore Harbor (Maryland) in 1814. The guide contains 11 lessons: (1) "Where in the World Is Baltimore?" (no handout-use classroom resources); (2) "Why Baltimore?" (Handout-Why Baltimore?); (3) "Now Where Do We Place the Fort?" (Handout-Map of Patapsco River/Baltimore Harbor);…

  10. Visualizing the Life and Legacy of Henry VIII: Guiding Students with Eight Types of Graphic Organizers

    ERIC Educational Resources Information Center

    Gallavan, Nancy P.; Kottler, Ellen

    2010-01-01

    Delving into the life and legacy of Henry VIII is both complex and captivating. People seem compelled to learn more abut his critical contributions and controversial conduct that range from the significant to the scandalous. Reflecting on the history of the world would be incomplete without investigating the events and escapades associated with…

  11. Mounting a Curricular Revolution: An Interview with Henry Louis Gates, Jr.

    ERIC Educational Resources Information Center

    von Zastrow, Claus

    2009-01-01

    This article presents an interview with Henry Louis Gates, Jr., Harvard professor and cultural critic who has captured 25 million viewers with his PBS documentary series, African American Lives (WNET). Using genealogical research and DNA science, Gates traces the family history of 19 famous African Americans. What results is a rich and moving…

  12. Critical Connection: Collegesite/Worksite Learning. High Level Program Integration at McHenry County College.

    ERIC Educational Resources Information Center

    Beckstrom, Edward S.; Ungari, June

    In January 1995, Illinois' McHenry County College began development of an occupational initiative to prepare individuals for functioning in the "high performance workplace" of today's technological and informational society. The initiative, "Academy for High Performance," was designed to integrate general education with an occupational curriculum

  13. Neoliberalism, Democracy and the University as a Public Sphere: An Interview with Henry A. Giroux

    ERIC Educational Resources Information Center

    Harper, Victoria

    2014-01-01

    "Truthout" contributor, director of "Truthout's" Public Intellectual Project (truth-out.org/public-intellectual-project) and Truthout board member Henry A. Giroux responds to questions about how the excesses of neoliberal politics have reshaped and subverted the democratic mission of higher education.

  14. On New Rhetoric, John Henry Newman and the Language of Metaphors: Implications for Branding Higher Education

    ERIC Educational Resources Information Center

    Lawler-Brunner, Jennifer Lynne

    2012-01-01

    This project interprets how John Henry Newman's (1801-1890) system of thought informs the philosophical and theoretical grounds for rhetorical praxis in the marketplace. His seminal lessons in "An Essay in Aid of a Grammar of Assent" (1870) and "The Idea of a University" (1873 ed.) demonstrate the metaphoric power of words…

  15. Movement, Memory and Mathematics: Henri Bergson and the Ontology of Learning

    ERIC Educational Resources Information Center

    de Freitas, Elizabeth; Ferrara, Francesca

    2015-01-01

    Using the work of philosopher Henri Bergson (1859-1941) to examine the nature of movement and memory, this article contributes to recent research on the role of the body in learning mathematics. Our aim in this paper is to introduce the ideas of Bergson and to show how these ideas shed light on mathematics classroom activity. Bergson's monist…

  16. An examination of Shneidman's application of Henry Murray's classification of needs to suicidal individuals.

    PubMed

    Lester, D

    1998-08-01

    30 suicidal deaths were examined for the presence of needs described by Henry Murray. The most common needs identified were harmavoidance and infavoidance. Other needs were present rarely and typically only in unusual suicides such as double suicides or seppuku. PMID:9760622

  17. Fin-de-Siecle Advances in Neuroeducation: Henry Herbert Donaldson and Reuben Post Halleck

    ERIC Educational Resources Information Center

    Theodoridou, Zoe D.; Triarhou, Lazaros C.

    2009-01-01

    This article focuses on two early attempts at bridging neuroscience and education, made by Henry Herbert Donaldson (1857-1938), a neurologist, and Reuben Post Halleck (1859-1936), an educator. Their works, respectively entitled "The Growth of the Brain: A Study of the Nervous System in Relation to Education" (1895) and "The Education of the

  18. BUBBLE STRIPPING TO DETERMINE HYDROGEN CONCENTRATIONS IN GROUND WATER: A PRACTICAL APPLICATION OF HENRY'S LAW

    EPA Science Inventory

    The Bubble Stripping Method is a chemical testing method that operates on the principle of Henry's Law. It is useful for determining concentrations of hydrogen in well water, and it is capable of detecting concentrations on the order of nanomoles per liter. The method provides ...

  19. Fin-de-Siecle Advances in Neuroeducation: Henry Herbert Donaldson and Reuben Post Halleck

    ERIC Educational Resources Information Center

    Theodoridou, Zoe D.; Triarhou, Lazaros C.

    2009-01-01

    This article focuses on two early attempts at bridging neuroscience and education, made by Henry Herbert Donaldson (1857-1938), a neurologist, and Reuben Post Halleck (1859-1936), an educator. Their works, respectively entitled "The Growth of the Brain: A Study of the Nervous System in Relation to Education" (1895) and "The Education of the…

  20. 77 FR 71190 - Henry County, Iowa; Notice of Preliminary Permit Application Accepted for Filing and Soliciting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-29

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Henry County, Iowa; Notice of Preliminary Permit Application Accepted for...-file, mail an original and seven copies to: Kimberly D. Bose, Secretary, Federal Energy...

  1. Henry Evelyn Bliss--The Other Immortal, or a Prophet without Honour?

    ERIC Educational Resources Information Center

    Broughton, Vanda

    2008-01-01

    The paper takes a retrospective look at the work of Henry Evelyn Bliss, classificationist theorist and author of the "Bibliographic Classification". Major features of his writings and philosophy are examined and evaluated for the originality of their contribution to the corpus of knowledge in the discipline. Reactions to Bliss's work are analysed,…

  2. Henry David Thoreau, Martin Luther King Jr., and the American Tradition of Protest.

    ERIC Educational Resources Information Center

    Powell, Brent

    1995-01-01

    Maintains that Henry David Thoreau and Martin Luther King, Jr. fundamentally altered the tradition of protest and reform. Compares and contrasts the role of each man in U.S. social and constitutional history. Concludes that while Thoreau lacked the broad influence of King, his writings influenced both King and Mohandas Gandhi. (CFR)

  3. Control-Structure Ratings on the Fox River at McHenry and Algonquin, Illinois

    USGS Publications Warehouse

    Straub, Timothy D.; Johnson, Gary P.; Hortness, Jon E.; Parker, Joseph R.

    2009-01-01

    The Illinois Department of Natural Resources-Office of Water Resources operates control structures on a reach of the Fox River in northeastern Illinois between McHenry and Algonquin. The structures maintain water levels in the river for flood-control and recreational purposes. This report documents flow ratings for hinged-crest gates, a broad-crested weir, sluice gates, and an ogee spillway on the control structures at McHenry and Algonquin. The ratings were determined by measuring headwater and tailwater stage along with streamflow at a wide range of flows at different gate openings. Standard control-structure rating techniques were used to rate each control structure. The control structures at McHenry consist of a 221-feet(ft)-long broad-crested weir, a 4-ft-wide fish ladder, a 50-ft-wide hinged-crest gate, five 13.75-ft-wide sluice gates, and a navigational lock. Sixty measurements were used to rate the McHenry structures. The control structures at Algonquin consist of a 242-ft-long ogee spillway and a 50-ft-wide hinged-crest gate. Forty-one measurements were used to rate the Algonquin control structures.

  4. 76 FR 63906 - Henry Gordy International, Inc., Provisional Acceptance of a Settlement Agreement and Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-14

    ...It is the policy of the Commission to publish settlements which it provisionally accepts under the Consumer Product Safety Act in the Federal Register in accordance with the terms of 16 CFR 1118.20(e). Published below is a provisionally-accepted Settlement Agreement with Henry Gordy International, Inc., containing a civil penalty of...

  5. On New Rhetoric, John Henry Newman and the Language of Metaphors: Implications for Branding Higher Education

    ERIC Educational Resources Information Center

    Lawler-Brunner, Jennifer Lynne

    2012-01-01

    This project interprets how John Henry Newman's (1801-1890) system of thought informs the philosophical and theoretical grounds for rhetorical praxis in the marketplace. His seminal lessons in "An Essay in Aid of a Grammar of Assent" (1870) and "The Idea of a University" (1873 ed.) demonstrate the metaphoric power of words

  6. Pre-Education Programs: A Comprehensive Project at Henry Ford Community College.

    ERIC Educational Resources Information Center

    Zopf, Deborah; Smyrski, Larry

    This document presents an overview of a four-year comprehensive pre-education project at Henry Ford Community College (HFCC) in Michigan. To meet the needs of school districts that preferred a 32-credit certificate program as well as districts that preferred a 60-unit associate degree, HFCC employed a career-ladder approach: A 32-credit…

  7. The Henry Ford Academy: An Innovative Space for Teaching and Learning

    ERIC Educational Resources Information Center

    n/a, n/a

    2005-01-01

    Edith Graybill, English instructor at the Henry Ford Academy in Dearborn, Michigan, speaks about her school's English language arts curriculum, the influence of the school on the role of English language arts, the theories of teaching and learning used at the Academy, and other related topics. She believes that most of the students appreciate…

  8. High School Decision-Making at Henry Lord Middle School in Fall River

    ERIC Educational Resources Information Center

    Bronhard, Aimee A.

    2012-01-01

    The purpose of this qualitative study was to investigate how students at Henry Lord Middle School in Fall River take into consideration their initial college and career aspirations when making their decision for high school. Self-efficacy theory, critical theory, and a literature review related to high school decision-making inform the analysis of

  9. High School Decision-Making at Henry Lord Middle School in Fall River

    ERIC Educational Resources Information Center

    Bronhard, Aimee A.

    2012-01-01

    The purpose of this qualitative study was to investigate how students at Henry Lord Middle School in Fall River take into consideration their initial college and career aspirations when making their decision for high school. Self-efficacy theory, critical theory, and a literature review related to high school decision-making inform the analysis of…

  10. The Heuristic Method, Precursor of Guided Inquiry: Henry Armstrong and British Girls' Schools, 1890-1920

    ERIC Educational Resources Information Center

    Rayner-Canham, Geoff; Rayner-Canham, Marelene

    2015-01-01

    Though guided-inquiry learning, discovery learning, student-centered learning, and problem-based learning are commonly believed to be recent new approaches to the teaching of chemistry, in fact, the concept dates back to the late 19th century. Here, we will show that it was the British chemist, Henry Armstrong, who pioneered this technique,

  11. Reading Henry James: Consciousness and "The Beast in the Jungle" as a Puzzle.

    ERIC Educational Resources Information Center

    Wilson-Jordan, Jacqueline; Mayer, Charles W.

    2002-01-01

    Describes several of the challenges facing the student of Henry James's work and suggests some ways of meeting them. Focuses on James's later stories, where the problems of understanding are greater than they are in his earlier works. Presents questions and discussion for the four full days to be devoted to this long tale. (SG)

  12. Henry Giroux and the Politics of Higher Education under George W. Bush: An Interview

    ERIC Educational Resources Information Center

    Pozo, Mike Alexander

    2005-01-01

    In May of 2004 Henry Giroux, a creator of the field of critical pedagogy and a leading advocate for young people, democracy, and education in the United States, reluctantly left Penn State University after twelve years as a Distinguished Professor in the education department. He has been a critic of the corporatization of and conservative…

  13. Nursing Program Associate in Applied Science Degree, Patrick Henry Community College. Evaluation Report.

    ERIC Educational Resources Information Center

    Williams, Jean

    In 1988, a quantitative and qualitative analysis was conducted to determine the effectiveness, quality, and image of Patrick Henry Community College's (PHCC's) nursing program. The study was initiated in response to faculty and administrator concern about the low passing rates of nursing graduates on the state licensing board examination. The…

  14. Community Arts Programs: Cohesion and Difference Case Studies. Henry Street Settlement and El Museo del Barrio

    ERIC Educational Resources Information Center

    Kiebert-Gruen, Cathleen

    2009-01-01

    A comparative case study of two cultural institutions, Henry Street Settlement and El Museo del Barrio, founded almost eighty years apart, were involved in social justice causes and community arts. Although both of these institutions participated in the political activism of their time, they also demonstrated an important adaptability. They were…

  15. Silibinin prevents ultraviolet B radiation-induced epidermal damages in JB6 cells and mouse skin in a p53-GADD45α-dependent manner.

    PubMed

    Roy, Srirupa; Deep, Gagan; Agarwal, Chapla; Agarwal, Rajesh

    2012-03-01

    Better preventive strategies are required to reduce ultraviolet (UV)-caused photodamage, the primary etiological factor for non-melanoma skin cancer (NMSC). Accordingly, here we examined the preventive efficacy of silibinin against UVB-induced photodamage using mouse epidermal JB6 cells and SKH1 hairless mouse epidermis. In JB6 cells, silibinin pretreatment protected against apoptosis and accelerated the repair of cyclobutane pyrimidine dimers (CPD) induced by moderate dose of UVB (50 mJ/cm(2)), which we are at risk of daily exposure. Silibinin also reversed UVB-induced S phase arrest, reducing both active DNA synthesizing and inactive S phase populations. In mechanistic studies, UVB-irradiated cells showed a transient upregulation of both phosphorylated (Ser-15 and Ser-392) and total p53, whereas silibinin pretreatment led to a more sustained upregulation and stronger nuclear localization of p53. Silibinin also caused a marked upregulation of GADD45α, a downstream target of p53, implicated in DNA repair and cell cycle regulation. Importantly, under p53 and GADD45α knockdown conditions, cells were more susceptible to UVB-induced apoptosis without any significant S phase arrest, and protective effects of silibinin were compromised. Similar to the in vitro results, topical application of silibinin prior to or immediately after UVB irradiation resulted in sustained increase in p53 and GADD45α levels and accelerated CPD removal in the epidermis of SKH1 hairless mice. Together, our results show for the first time that p53-mediated GADD45α upregulation is the key mechanism by which silibinin protects against UVB-induced photodamage and provides a strong rationale to investigate silibinin in reducing the risk and/or preventing early onset of NMSC. PMID:22166495

  16. Dicke coupling by feasible local measurements at the superradiant quantum phase transition

    NASA Astrophysics Data System (ADS)

    Bina, M.; Amelio, I.; Paris, M. G. A.

    2016-05-01

    We address characterization of many-body superradiant systems and establish a fundamental connection between quantum criticality and the possibility of locally estimating the coupling constant, i.e., extracting its value by probing only a portion of the whole system. In particular, we consider Dicke-like superradiant systems made of an ensemble of two-level atoms interacting with a single-mode radiation field at zero effective temperature, and address estimation of the coupling by measurements performed only on radiation. At first, we obtain analytically the quantum Fisher information (QFI) and show that optimal estimation of the coupling may be achieved by tuning the frequency of the radiation field to drive the system toward criticality. The scaling behavior of the QFI at the critical point is obtained explicitly upon exploiting the symplectic formalism for Gaussian states. We then analyze the performances of feasible detection schemes performed only on the radiation subsystem, namely homodyne detection and photon counting, and show that the corresponding Fisher informations (FIs) approach the global QFI in the critical region. We thus conclude that criticality is a twofold resource. On the one hand, global QFI diverges at the critical point, i.e., the coupling may be estimated with the arbitrary precision. On the other hand, the FIs of feasible local measurements (which are generally smaller than the QFI out of the critical region), show the same scaling of the global QFI; i.e., optimal estimation of coupling may be achieved by locally probing the system, despite its strongly interacting nature.

  17. Dissolved-Solids Load in Henrys Fork Upstream from the Confluence with Antelope Wash, Wyoming, Water Years 1970-2009

    USGS Publications Warehouse

    Foster, Katharine; Kenney, Terry A.

    2010-01-01

    Annual dissolved-solids load at the mouth of Henrys Fork was estimated by using data from U.S. Geological Survey streamflow-gaging station 09229500, Henrys Fork near Manila, Utah. The annual dissolved-solids load for water years 1970-2009 ranged from 18,300 tons in 1977 to 123,300 tons in 1983. Annual streamflows for this period ranged from 14,100 acre-feet in 1977 to 197,500 acre-feet in 1983. The 25-percent trimmed mean dissolved-solids load for water years 1970-2009 was 44,300 tons per year at Henrys Fork near Manila, Utah. Previous simulations using a SPAtially Referenced Regression On Watershed attributes (SPARROW) model for dissolved solids specific to water year 1991 conditions in the Upper Colorado River Basin predicted an annual dissolved-solids load of 25,000 tons for the Henrys Fork Basin upstream from Antelope Wash. On the basis of computed dissolved-solids load data from Henrys Fork near Manila, Utah, together with estimated annual dissolved-solids load from Antelope Wash and Peoples Canal, this prediction was adjusted to 37,200 tons. As determined by simulations with the Upper Colorado River Basin SPARROW model, approximately 56 percent (14,000 tons per year) of the dissolved-solids load at Henrys Fork upstream from Antelope Wash is associated with the 21,500 acres of irrigated agricultural lands in the upper Henrys Fork Basin.

  18. Enhancement of the thermoelectric figure of merit in DNA-like systems induced by Fano and Dicke effects.

    PubMed

    Fu, Hua-Hua; Gu, Lei; Wu, Dan-Dan; Zhang, Zu-Quan

    2015-04-28

    We report a theoretical study highlighting the thermoelectric properties of biological and synthetic DNA molecules. Based on an effective tight-binding model of duplex DNA and by using the nonequilibrium Green's function technique, the thermal conductance, electrical conductance, Seebeck coefficient and thermoelectric figure of merit in the system are numerically calculated by varying the asymmetries of energies and electronic hoppings in the backbone sites to simulate the environmental complications and fluctuations. We find that due to the multiple transport paths in the DNA molecule, the Fano antiresonance occurs, and enhances the Seebeck coefficient and the figure of merit. When the energy difference is produced in every opposite backbone site, the Dicke effect appears. This effect gives rise to a semiconducting-metallic transition, and enhances the thermoelectric efficiency of the DNA molecule remarkably. Moreover, as the Fano antiresonance point is close to the Dicke resonance one, a giant enhancement in the thermoelectric figure of merit in the DNA molecule has been found. These results provide a scenario to obtain effective routes to enhance the thermoelectric efficiency in the DNA molecules, and suggest perspectives for future experiments intending to control the thermoelectric transport in DNA-like nanodevices. PMID:25826287

  19. Thermodynamics of topological black holes in Brans-Dicke gravity with a power-law Maxwell field

    NASA Astrophysics Data System (ADS)

    Zangeneh, M. Kord; Dehghani, M. H.; Sheykhi, A.

    2015-11-01

    In this paper, we present a new class of higher-dimensional exact topological black hole solutions of the Brans-Dicke theory in the presence of a power-law Maxwell field as the matter source. For this aim, we introduce a conformal transformation which transforms the Einstein-dilaton-power-law Maxwell gravity Lagrangian to the Brans-Dicke-power-law Maxwell theory one. Then, by using this conformal transformation, we obtain the desired solutions. Next, we study the properties of the solutions and conditions under which we have black holes. Interestingly enough, we show that there is a cosmological horizon in the presence of a negative cosmological constant. Finally, we calculate the temperature and charge and then by calculating the Euclidean action, we obtain the mass, the entropy and the electromagnetic potential energy. We find that the entropy does not respect the area law, and also the conserved and thermodynamic quantities are invariant under conformal transformation. Using these thermodynamic and conserved quantities, we show that the first law of black hole thermodynamics is satisfied on the horizon.

  20. Raman tensor elements and Faust-Henry coefficients of wurtzite-type α-GaN: How to overcome the dilemma of the sign of Faust-Henry coefficients in α-GaN?

    NASA Astrophysics Data System (ADS)

    Irmer, Gert; Röder, Christian; Himcinschi, Cameliu; Kortus, Jens

    2014-12-01

    Faust-Henry coefficients are ratios describing the relative influence of lattice displacements and electric field onto the electric susceptibility. They are essential in order to access the charge carrier concentration as well as the mobility of polar semiconductors by Raman scattering from measured frequencies, bandwidths, and intensities of coupled phonon-plasmon modes. In the case of α-GaN only the Faust-Henry coefficient connected with the Raman tensor elements aTO and aLO of the axial modes has been reported with differing results and questionable sign. However, according to its wurtzite structure, in hexagonal GaN three Faust-Henry coefficients associated with phonon modes of different symmetry exist. In the present study, from Raman scattering efficiencies of corresponding transverse optical and longitudinal optical phonons which are accessible in different scattering configurations, Raman tensor elements, and respective Faust-Henry coefficients were deduced. It is shown that near-forward scattering of phonon-polaritons, depending on frequency, allows the unambiguous determination of the sign of Faust-Henry coefficients. In case of α-GaN the obtained Faust-Henry coefficients connected with the corresponding Raman tensor elements are Ca F H = - 3.46 , Cb F H = - 3.81 , and Cc F H = - 2.31 .

  1. 78 FR 34428 - Missouri Central Railroad Company-Abandonment Exemption-in Cass, Henry, Johnson, and Pettis...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-07

    ..., Johnson, and Pettis Counties, MO; Central Midland Railway Company--Discontinuance of Service Exemption--in Cass, Henry, Johnson, and Pettis Counties, MO Missouri Central Railroad Company (MCRR) and...

  2. Osler's Pupil, Henry W. Ochsner, MD (1877–1902): His Life, Lineage, and Death

    PubMed Central

    Mueller, Paul S.

    2007-01-01

    In multiple editions of his Principles and Practice of Medicine, a 1904 speech, and his essay “A Student Life,” Sir William Osler mentions and laments the death due to typhoid of his pupil, Henry W. Ochsner (1877–1902). Harvey Cushing, MD, in his biography of Osler, describes how deeply Osler was moved by “poor” Ochsner's death. Yet little is known about Ochsner. This article describes the life story, lineage, and death of Henry W. Ochsner, MD, a son of Swiss pioneers who settled in Waumandee, Wisconsin. He was a member of a family that includes medical luminaries (e.g., Albert J. Ochsner, MD, the famous Chicago surgeon, and Alton Ochsner, MD, the founder of the Ochsner Clinic); a brilliant student and physician; a humble and beloved fellow citizen; and a favorite pupil of Osler. PMID:21603518

  3. An early manuscript in the history of American comparative psychology: Lewis Henry Morgan's "Animal Psychology" (1857).

    PubMed

    Johnston, Timothy D

    2002-11-01

    Lewis Henry Morgan (1818-1881) is best known as the 1st ethnographer of Native American culture, but he also wrote on animal psychology, beginning in 1843, some 50 years before the founding of comparative psychology as a scientific discipline. Although not an evolutionist, Morgan argued that animals possess many human mental abilities, such as reason and moral judgment, and he rejected the scientific utility of the concept of instinct, a view that did not gain much currency in psychology until the rise of behaviorism in the 1920s. This 1857 manuscript, which is in the Lewis Henry Morgan Papers at the University of Rochester in Rochester, New York, formed the basis for the last chapter of his 1868 monograph on the American beaver but gives additional information on his sources and an expanded criticism of the concept of instinct. PMID:12465615

  4. Henry's law constant for phosphine in seawater: determination and assessment of influencing factors

    NASA Astrophysics Data System (ADS)

    Fu, Mei; Yu, Zhiming; Lu, Guangyuan; Song, Xiuxian

    2013-07-01

    The Henry's Law constant ( k) for phosphine in seawater was determined by multiple phase equilibration combined with headspace gas chromatography. The effects of pH, temperature, and salinity on k were studied. The k value for phosphine in natural seawater was 6.415 at room temperature (approximately 23°C). This value increases with increases in temperature and salinity, but no obvious change was observed at different pH levels. At the same temperature, there was no significant difference between the k for phosphine in natural seawater and that in artificial seawater. This implies that temperature and salinity are major determining factors for k in marine environment. Double linear regression with Henry's Law constants for phosphine as a function of temperature and salinity confirmed our observations. These results provide a basis for the measurement of trace phosphine concentrations in seawater, and will be helpful for future research on the status of phosphine in the oceanic biogeochemical cycle of phosphorus.

  5. Mineral resources of the Henry's Lake Wilderness Study Area, Fremont County, Idaho

    SciTech Connect

    Tysdal, R.G. ); Peters, T.J. )

    1988-01-01

    The authors report on the 350-acre Henry's Lake Wilderness Study Area in the southern part of the Madison Range. Fremont County, Idaho, and is about 17 miles north of the hamlet of Islan Park. The southwestern part of the wilderness study area, along the Madison Range Fault, is rated as having a moderate energy resource potential for geothermal water, and the remainder of the study area has a low potential for this resource.

  6. Documentation for the machine-readable version of the Henry Draper Catalogue (edition 1985)

    NASA Technical Reports Server (NTRS)

    Roman, N. G.; Warren, W. H., Jr.

    1985-01-01

    An updated, corrected and extended machine-readable version of the catalog is described. Published and unpublished errors discovered in the previous version was corrected; letters indicating supplemental stars in the BD have been moved to a new byte to distinguish them from double-star components; and the machine readable portion of The Henry Draper Extension (HDE) (HA 100) was converted to the same format as the main catalog, with additional data added as necessary.

  7. Implications of Two Well-Known Models for Instructional Designers in Distance Education: Dick-Carey versus Morrison-Ross-Kemp

    ERIC Educational Resources Information Center

    Akbulut, Yavuz

    2007-01-01

    This paper first summarizes, and then compares and contrasts two well-known instructional design models: Dick and Carey Model (DC) and Morrison, Ross and Kemp model (MRK). The target audiences of both models are basically instructional designers. Both models have applications for different instructional design settings. They both see the

  8. The last ride of Henry II of France: orbital injury and a king's demise.

    PubMed

    Eftekhari, Kian; Choe, Christina H; Vagefi, M Reza; Eckstein, Lauren A

    2015-01-01

    Jousting was a popular pastime for royalty in the Renaissance era. Injuries were common, and the eye was particularly at risk from the splinters of the wooden lance. On June 30, 1559, Henry II of France participated in a jousting tournament to celebrate two royal weddings. In the third match, Gabriel de Montgomery struck Henry on the right shoulder and the lance splintered, sending wooden shards into his face and right orbit. Despite being cared for by the prominent physicians Ambroise Paré and Andreas Vesalius, the king died 10 days later and was found to have a cerebral abscess. The wound was not explored immediately after the injury; nevertheless, wooden foreign bodies were discovered in the orbit at the time of autopsy. The dura had not been violated, suggesting that an infection may have traveled from the orbit into the brain. Nostradamus and Luca Guarico, the astrologer to the Medici family, had prophesied the death of Henry II of France, but he ignored their warnings and thus changed the course of history in Renaissance Europe. PMID:25890627

  9. Bedrock and Sediment Controls on Channel Morphology in the Henry Mountains, Utah

    NASA Astrophysics Data System (ADS)

    Johnson, J. P.; Whipple, K. X.

    2003-12-01

    Mixed bedrock-alluvial channels on and around the Henry Mountains and Navajo Mountain, southeast Utah, are ideal for unraveling the interconnected controls of sediment flux and bedrock properties on fluvial incision into bedrock because (1) channels incise through a range of lithologies with widely varying physical properties, and (2) sediment types vary systematically and predictably in different channels, with extreme differences in the durability and size distribution of sediment. Tertiary intrusive rocks (diorite) form the cores of the Henry Mountains and sedimentary units surround the central peaks, primarily alternating between sandstones and shales. Channels that tap into diorite at the peaks of the Henry Mountains tend to have smoothly concave profiles, and sediment in these channels has a strongly bimodal distribution, consisting primarily of quartz sand and large diorite clasts. The observed size distribution is caused by the dramatic difference in durability between the igneous intrusive rocks and the surrounding sedimentary units. In contrast, Navajo Mountain exposes the same sedimentary sequence but has no exposed intrusive rock, and therefore no source for durable diorite sediment. Channels on both the Henry Mountains and Navajo Mountain that do not source igneous intrusives but only cut into sedimentary units have more variable channel profiles, with steps and slope changes that often correlate with mapped geologic units, and these channels transport sand and sandstone clasts. DEM and remote sensing analysis and qualitative field observations suggest that systematic variations in slope-area scaling and channel morphology (slope, width, percent rock exposure, erosional bed forms, roughness) occur as functions of substrate lithology and diorite sediment supply. The tools and cover theory of sediment supply and bedrock erosion, first hypothesized by Grove Karl Gilbert in his report Geology of the Henry Mountains and recently explored experimentally and theoretically by other researchers, may be the channel-scale mechanism that causes the observed rougher and smoother longitudinal profiles. In some places, high channel slopes over resistant bedrock lithologies in channels with little diorite sediment may represent less efficient local erosion due to a lack of large and durable diorite clasts (one aspect of the tools effect). Conversely, the cover effect is seen where channel slopes appear to be set by the need to transport coarse diorite sediment, as slopes are often significantly steeper over diorite clast-laden reaches than over bare bedrock or sand-laden reaches. Further research may allow the evaluation and refinement of specific erosion models, in particular focusing on ways that variable bedrock lithology affects sedimentation, channel incision and landscape response.

  10. Intermediate accelerated solutions as generic late-time attractors in a modified Jordan-Brans-Dicke theory

    NASA Astrophysics Data System (ADS)

    Cid, Antonella; Leon, Genly; Leyva, Yoelsy

    2016-02-01

    In this paper we investigate the evolution of a Jordan-Brans-Dicke scalar field, Φ, with a power-law potential in the presence of a second scalar field, phi, with an exponential potential, in both the Jordan and the Einstein frames. We present the relation of our model with the induced gravity model with power-law potential and the integrability of this kind of models is discussed when the quintessence field phi is massless, and has a small velocity. The fact that for some fine-tuned values of the parameters we may get some integrable cosmological models, makes our choice of potentials very interesting. We prove that in Jordan-Brans-Dicke theory, the de Sitter solution is not a natural attractor. Instead, we show that the attractor in the Jordan frame corresponds to an ``intermediate accelerated'' solution of the form a(t) simeq eα1 tp1, as t → ∞ where α1 > 0 and 0 < p1 < 1, for a wide range of parameters. Furthermore, when we work in the Einstein frame we get that the attractor is also an ``intermediate accelerated'' solution of the form fraktur a(fraktur t) simeq eα2 fraktur tp2 as fraktur t → ∞ where α2 > 0 and 0Dicke theory.

  11. The Complete Friedman Cosmology with Barotropic Fluids for the Brans-Dicke Theory

    NASA Astrophysics Data System (ADS)

    Chauvet-Alducin, P.

    2002-12-01

    The different ways in which an homogeneous and isotropic Universe in the form of a barotropic fluid expands in the cosmological theory of Brans-Dicke [1] can be completly rendered, even if the space is not flat, almost only for the special stress-energy tensor that represents incoherent radiation or ultrarelativistic matter because the original, and well known, nonlinear field equations comprise two unknowns which makes their integration difficult, and more so when the space is non-flat, in contrast with the General Relativity case which only has a single unknown function to determine -the scale factor-. Therefore, a fruitful avenue that can be used to obtain cosmological solutions for this, and other scalar-tensor theories, originally developed in Chauvet [2], and extended elsewhere [3] has been to procure equations for a single variable by combining the two aforementioned functions into a single one. So far this, and other methods to obtain perfect fluid, analytic solutions for a non-flat space, have given the sought after, and complete results, mostly for the vacuum, incoherent radiation, and stiff "matter" cases in this, and in similar but more general scalar-tensor theories [4]. A salient fact for a non-flat space is that radiation, and the remaining fluids as well, can expand linearly in time which is the limit for accelerating universes that, nowadays, turn out to be significant [5]. This expansion comes about as the end product of the special form that the composite function assumes: a second degree polynomial whose discriminant is equal to zero, which then permits a time inversion onto "cosmic time" which translates into a common behavior for the non-flat FRW models, and is moreover the general cosmic solution to the flat space [6]. For the polynomial function different fluids, and different spaces as well, are distinguished essentially by the three constant factors some of which depend on the equation of state through n, and the coupling parameter ω. Space curvature not withstanding, all the solutions can be obtained by solving a third order "dynamic equation" which naturally imposes itself by the desire to work under every circumstance with one dependent variable only. For k ± 1, the common for all the fluids, a second degree polynomial seems to be the only existing solution which can be given in terms of polynomic, transcendental or other fairly well known functions, and is furthermore time invertible also. The type of expansion that this functional form gives, is found to be a linear expansion in the physical, standard metric "cosmic time". This common type of outspread, alike for all the perfect fluids means that in this theory a curved space which expands in linear form ignores the particular nature of the "matter" that drives it. For the open space, k = -1, a linear expansion is known to give a Milne Universe where, space-time is actually flat Minkowski space. The analysis of this solution also brings out other, perhaps unexpected, consequences some of which may also apply to the general non-flat spaces behavior of this or other similar scalar-tensor theories. These special solutions imply that given k, and n the numerical value of ω is controlled by the amount of "matter" present while its sign, likewise, also depends on n. In other words, if the space is not flat one is not free to choose randomly the sign or the coupling between the tensor and the scalar modes freely. On the other hand, a linear expansion for k = 1 is not a Milne solution but the numerical values forω still depend on the quantity of "matter" present, and its sign on n...

  12. On the relationship between the classical Dicke-Jaynes-Cummings-Gaudin model and the nonlinear Schroedinger equation

    SciTech Connect

    Du, Dianlou; Geng, Xue

    2013-05-15

    In this paper, the relationship between the classical Dicke-Jaynes-Cummings-Gaudin (DJCG) model and the nonlinear Schroedinger (NLS) equation is studied. It is shown that the classical DJCG model is equivalent to a stationary NLS equation. Moreover, the standard NLS equation can be solved by the classical DJCG model and a suitably chosen higher order flow. Further, it is also shown that classical DJCG model can be transformed into the classical Gaudin spin model in an external magnetic field through a deformation of Lax matrix. Finally, the separated variables are constructed on the common level sets of Casimir functions and the generalized action-angle coordinates are introduced via the Hamilton-Jacobi equation.

  13. Three Averaging Techniques for Reduction of Antenna Temperature Variance Measured by a Dicke Mode, C-Band Radiometer

    NASA Technical Reports Server (NTRS)

    Mackenzie, Anne I.; Lawrence, Roland W.

    2000-01-01

    As new radiometer technologies provide the possibility of greatly improved spatial resolution, their performance must also be evaluated in terms of expected sensitivity and absolute accuracy. As aperture size increases, the sensitivity of a Dicke mode radiometer can be maintained or improved by application of any or all of three digital averaging techniques: antenna data averaging with a greater than 50% antenna duty cycle, reference data averaging, and gain averaging. An experimental, noise-injection, benchtop radiometer at C-band showed a 68.5% reduction in Delta-T after all three averaging methods had been applied simultaneously. For any one antenna integration time, the optimum 34.8% reduction in Delta-T was realized by using an 83.3% antenna/reference duty cycle.

  14. Cr(VI) induces mitochondrial-mediated and caspase-dependent apoptosis through reactive oxygen species-mediated p53 activation in JB6 Cl41 cells

    SciTech Connect

    Son, Young-Ok; Hitron, J. Andrew; Wang Xin; Chang Qingshan; Pan Jingju; Zhang Zhuo; Liu Jiankang; Wang Shuxia; Lee, Jeong-Chae; Shi Xianglin

    2010-06-01

    Cr(VI) compounds are known to cause serious toxic and carcinogenic effects. Cr(VI) exposure can lead to a severe damage to the skin, but the mechanisms involved in the Cr(VI)-mediated toxicity in the skin are unclear. The present study examined whether Cr(VI) induces cell death by apoptosis or necrosis using mouse skin epidermal cell line, JB6 Cl41 cells. We also investigated the cellular mechanisms of Cr(VI)-induced cell death. This study showed that Cr(VI) induced apoptotic cell death in a dose-dependent manner, as demonstrated by the appearance of cell shrinkage, the migration of cells into the sub-G1 phase, the increase of Annexin V positively stained cells, and the formation of nuclear DNA ladders. Cr(VI) treatment resulted in the increases of mitochondrial membrane depolarization and caspases activation. Electron spin resonance (ESR) and fluorescence analysis revealed that Cr(VI) increased intracellular levels of reactive oxygen species (ROS) such as hydrogen peroxide and superoxide anion radical in dose-dependent manner. Blockage of p53 by si-RNA transfection suppressed mitochondrial changes of Bcl-2 family composition, mitochondrial membrane depolarization, caspase activation and PARP cleavage, leading to the inhibition of Cr(VI)-induced apoptosis. Further, catalase treatment prevented p53 phosphorylation stimulated by Cr(VI) with the concomitant inhibition of caspase activation. These results suggest that Cr(VI) induced a mitochondrial-mediated and caspase-dependent apoptosis in skin epidermal cells through activation of p53, which are mainly mediated by reactive oxidants generated by the chemical.

  15. [Sauveur-Henri-Victor Bouvier (1799-1877): orthopaedist, surgeon and promoter of physical education].

    PubMed

    Monet, Jacques; Quin, Grégory

    2013-01-01

    This article establishes the biography of a little known physician of the 19th century., whose commitment with orthopaedics and formulation of medical gymnastics was important: the surgeon-orthopaedist Sauveur-Henri-Victor Bouvier. Several constitutive processes of the medical field of the 19th century are analysed: specialization (around orthopaedics), professionalization and development of various therapeutic and hygienic methods (among them medical gymnastics). Bouvier's biography is particularly instructive and sheds new light on these different processes, as well as on the institutionalization of orthopaedics from the 1820's up to the 1870's, at the intersection between medical and educative fields, between hospital, medical faculty and teaching of gymnastics. PMID:24308261

  16. The Henry Cecil Ranson McBay Chair in Space Science

    NASA Technical Reports Server (NTRS)

    Bota, Kofi B.; King, James, Jr.

    1999-01-01

    The goals and objectives of the Henry Cecil Ransom McBay Chair in Space Sciences were to: (1) provide leadership in developing and expanding Space Science curriculum; (2) contribute to the research and education endeavors of NASA's Mission to Planet Earth program; (3) expand opportunities for education and hands-on research in Space and Earth Sciences; (4) enhance scientific and technological literacy at all educational levels and to increase awareness of opportunities in the Space Sciences; and (5) develop a pipeline, starting with high school, of African American students who will develop into a cadre of well-trained scientists with interest in Space Science Research and Development.

  17. Temperature-dependent Henry's law constants of atmospheric organics of biogenic origin.

    PubMed

    Leng, Chunbo; Kish, J Duncan; Kelley, Judas; Mach, Mindy; Hiltner, Joseph; Zhang, Yunhong; Liu, Yong

    2013-10-10

    There have been growing interests in modeling studies to understand oxidation of volatile organic compounds in the gas phase and their mass transfer to the aqueous phase for their potential roles in cloud chemistry, formation of secondary organic aerosols, and fate of atmospheric organics. Temperature-dependent Henry's law constants, key parameters in the atmospheric models to account for mass transfer, are often unavailable. In the present work, we investigated gas-liquid equilibriums of isoprene, limonene, α-pinene, and linalool using a bubble column technique. These compounds, originating from biogenic sources, were selected for their implications in atmospheric cloud chemistry and secondary organic aerosol formation. We reported Henry's law constants (K(H)), first order loss rates (k), and gas phase diffusion coefficients over a range of temperatures relevant to the lower atmosphere (278-298 K) for the first time. The measurement results of K(H) values for isoprene, limonene, α-pinene, and linalool at 298 K were 0.036 ± 0.003; 0.048 ± 0.004; 0.029 ± 0.004; and 21.20 ± 0.30 mol L(-1) atm(-1), respectively. The fraction for these compounds in stratocumulus and cumulonimbus clouds at 278 K were also estimated in this work (isoprene, 1.0 × 10(-6), 6.8 × 10(-6); limonene, 1.5 × 10(-6), 1.0 × 10(-5); α-pinene, 4.5 × 10(-7), 3.1 × 10(-6); and linalool, 6.2 × 10(-4), 4.2 × 10(-3)). Our measurements in combination with literature results indicated that noncyclic alkenes could have smaller K(H) values than those of cyclic terpenes and that K(H) values may increase with an increasing number of double bonds. It was also shown that estimated Henry's law constants and their temperature dependence based on model prediction can differ from experimental results considerably and that direct measurements of temperature-dependent Henry's law constants of atmospheric organics are necessary for future work. PMID:24020856

  18. Henri Wallon's Theory of Early Child Development: The Role of Emotions

    PubMed

    Veer

    1996-12-01

    The present paper gives an account of part of the stage theory of early child development of the French theorist Henri Wallon (1879-1962). Unlike his contemporary Jean Piaget, Wallon concentrated his efforts upon a description of the child's emotional development and the role emotions play in establishing the bond between child and caregiver. The description of Wallon's stage theory is preceded by biographical information and a presentation of his methodological views. It is argued that Wallon's theory is unique in its focus, exerted influence upon theorists such as Lev Vygotsky, and is basically compatible with modern insights about the nature of child development and the growth of intersubjectivity. PMID:8979855

  19. General integrable n-level, many-mode Janes-Cummings-Dicke models and classical r-matrices with spectral parameters

    SciTech Connect

    Skrypnyk, T. E-mail: tskrypnyk@imath.kiev.ua

    2015-02-15

    Using the technique of classical r-matrices and quantum Lax operators, we construct the most general form of the quantum integrable “n-level, many-mode” spin-boson Jaynes-Cummings-Dicke-type hamiltonians describing an interaction of a molecule of N n-level atoms with many modes of electromagnetic field and containing, in general, additional non-linear interaction terms. We explicitly obtain the corresponding quantum Lax operators and spin-boson analogs of the generalized Gaudin hamiltonians and prove their quantum commutativity. We investigate symmetries of the obtained models that are associated with the geometric symmetries of the classical r-matrices and construct the corresponding algebra of quantum integrals. We consider in detail three classes of non-skew-symmetric classical r-matrices with spectral parameters and explicitly obtain the corresponding quantum Lax operators and Jaynes-Cummings-Dicke-type hamiltonians depending on the considered r-matrix.

  20. Preventing child obesity: a long-term evaluation of the HENRY approach.

    PubMed

    Brown, Rebecca E; Willis, Thomas A; Aspinall, Nichola; Candida, Hunt; George, Jackie; Rudolf, Mary C J

    2013-07-01

    Childhood obesity has reached epidemic levels, yet many health professionals lack confidence in working with parents around lifestyle change. HENRY (Health Exercise Nutrition for the Really Young) aims to tackle this through training practitioners to work more effectively with parents of preschoolers around obesity and lifestyle issues.We evaluated the long-term impact of HENRY training on health professionals' knowledge, skills and confidence in tackling obesity prevention. All practitioners trained 2007-11 (n = 1601) were invited to complete an online survey. 237 emails (14.8%) were undeliverable; 354 (26.0%) of the remainder completed the survey. A majority (67%) reported using knowledge and skills gained on a regular basis in their professional lives. Sessions on the importance of empathy and key parenting skills were considered particularly useful, with 78% and 74% respectively reporting regular use of these skills. Effects on respondents' personal lives were also reported: 61% applied the knowledge and skills at home, identifying for example, more shared family mealtimes and reduced portion sizes. The impact endures, with 71% of those undergoing training > 12 months ago, stating that they continued to use concepts in their professional lives. The findings suggest that brief training can have a sustained impact on practitioners' professional and personal lives. PMID:23914474

  1. Data set for background investigation of atmospheric constituents for Cape Henry site: August 5-22, 1974

    NASA Technical Reports Server (NTRS)

    1975-01-01

    The laboratory was located within the Fort Story Military Reservation at Cape Henry between 5 August and 21 August 1974. Total sulfur, total hydrocarbons, NO, NO2, Nox, and O3 were monitored and reported as hourly averages. Visibility was measured using an integrating nephelometer and reported as hourly averages. Twenty-four hour averaged mass loading was determined using two high volume air samplers located on different levels (25' and 50') at the site. Temperature, wind speed, relative humidity, barometric pressure and solar radiation intensity were measured at the site or supplemented by readings taken by the U. S. Coast Guard at the Cape Henry Light House.

  2. The Politics of Knowledge and the Revitalization of American Democracy: A Response to Henry Giroux's "The University in Chains: Confronting the Military-Industrial-Academic Complex"

    ERIC Educational Resources Information Center

    Fraser, Cary

    2009-01-01

    This article presents the author's response to Henry Giroux's "The University in Chains: Confronting the Military-Industrial-Academic Complex." Henry Giroux has written a provocative assessment of the contemporary challenges facing the United States as a society, which over the course of the 20th century had assumed the role of leader and exemplar…

  3. The Politics of Knowledge and the Revitalization of American Democracy: A Response to Henry Giroux's "The University in Chains: Confronting the Military-Industrial-Academic Complex"

    ERIC Educational Resources Information Center

    Fraser, Cary

    2009-01-01

    This article presents the author's response to Henry Giroux's "The University in Chains: Confronting the Military-Industrial-Academic Complex." Henry Giroux has written a provocative assessment of the contemporary challenges facing the United States as a society, which over the course of the 20th century had assumed the role of leader and exemplar

  4. Ground-water aspects of the lower Henrys Fork region, eastern Idaho

    USGS Publications Warehouse

    Crosthwaite, E.G.; Mundorff, Maurice John; Walker, Eugene H.

    1970-01-01

    The lower Henrys Fork region in eastern Idaho includes the plains and low benches between Ashton and the junction of Henrys Fork and Snake River. The northwestern and western parts of the area are part of the Snake River basalt plain. The central part of the area is occupied by alluvial plains of the Snake, Teton, and Falls Rivers and of Henrys Fork. The alluvial deposits are underlain by basalt. The southeastern part of the area is a bench (Rexburg Bench), chiefly on silicic and basaltic volcanic rocks, which rises gradually to mountain peaks (Big Hole Mountains) southeast of the area. Irrigation wells open to the basalt under the Snake River Plain and the basalt and sands and gravels under the alluvial plains yield large amounts of water with small drawdowns. Irrigation wells in the silicic volcanic rocks and the interbedded ash, pyroclastics, and sedimentary deposits beneath the Rexburg Bench generally yield much less water. The regional water table slopes southwestward beneath the basalt and alluvial plains. It is recharged by precipitation that infiltrates into the ground in the headwaters of Henrys Fork and Falls, and Teton Rivers and by water that moves downward from an extensive perched water body caused by seepage from stream channels and surface-water irrigation. The perched water in part moves vertically down to the regional water table and in part laterally to the streams. Ground water beneath the Rexburg Bench moves generally northwestward to join the regional ground-water body beneath the alluvia,1 and basalt plain, but this area contributes very little recharge to the main aquifer body. Recharge to the regional water table is estimated to average 725,000 acre-feet annually. The regional water table is below the level of the streams in the area, and ground water in the main aquifer, therefore, is not tributary to the streams. Pumping from the regional ground-water reservoir for irrigation or other uses would have no effect on streamflow or surface-water rights within the study area. However, depletion of the underflow would eventually reduce the inflow to American Falls Reservoir, unless the depletion was offset by additional recharge. Total withdrawals of ground water for irrigation in 1962, principally in the Rexburg Bench, were estimated to be 25,000 acre-feet. About 10,000 acre-feet was withdrawn for domestic, municipal, and stock supplies. These withdrawals caused no significant decline in the water table. In the Ashton area, surface-water irrigation has caused water to be perched in basalt above the silicic volcanic rocks, and much of' this perched water contributes to streamflow. Some ground water can be pumped from the basalt for irrigation and other uses. If ground water were pumped for irrigation, the flow of Henrys Fork would be decreased by the amount of pumped water consumed by crops. Water pumped for nonconsumptive use would have little effect on streamflow. Ground-water prospects for irrigation in the Falls River area are not encouraging.

  5. High-titer n-butanol production by clostridium acetobutylicum JB200 in fed-batch fermentation with intermittent gas stripping.

    PubMed

    Xue, Chuang; Zhao, Jingbo; Lu, Congcong; Yang, Shang-Tian; Bai, Fengwu; Tang, I-Ching

    2012-11-01

    Acetone-butanol-ethanol (ABE) fermentation with a hyper-butanol producing Clostridium acetobutylicum JB200 was studied for its potential to produce a high titer of butanol that can be readily recovered with gas stripping. In batch fermentation without gas stripping, a final butanol concentration of 19.1 g/L was produced from 86.4 g/L glucose consumed in 78 h, and butanol productivity and yield were 0.24 g/L h and 0.21 g/g, respectively. In contrast, when gas stripping was applied intermittently in fed-batch fermentation, 172 g/L ABE (113.3 g/L butanol, 49.2 g/L acetone, 9.7 g/L ethanol) were produced from 474.9 g/L glucose in six feeding cycles over 326 h. The overall productivity and yield were 0.53 g/L h and 0.36 g/g for ABE and 0.35 g/L h and 0.24 g/g for butanol, respectively. The higher productivity was attributed to the reduced butanol concentration in the fermentation broth by gas stripping that alleviated butanol inhibition, whereas the increased butanol yield could be attributed to the reduced acids accumulation as most acids produced in acidogenesis were reassimilated by cells for ABE production. The intermittent gas stripping produced a highly concentrated condensate containing 195.9 g/L ABE or 150.5 g/L butanol that far exceeded butanol solubility in water. After liquid-liquid demixing or phase separation, a final product containing ~610 g/L butanol, ~40 g/L acetone, ~10 g/L ethanol, and no acids was obtained. Compared to conventional ABE fermentation, the fed-batch fermentation with intermittent gas stripping has the potential to reduce at least 90% of energy consumption and water usage in n-butanol production from glucose. PMID:22627864

  6. Mapping Henry: Synchrotron-sourced X-ray fluorescence mapping and ultra-high-definition scanning of an early Tudor portrait of Henry VIII

    NASA Astrophysics Data System (ADS)

    Dredge, Paula; Ives, Simon; Howard, Daryl L.; Spiers, Kathryn M.; Yip, Andrew; Kenderdine, Sarah

    2015-11-01

    A portrait of Henry VIII on oak panel c. 1535 has recently undergone technical examination to inform questions regarding authorship and the painting's relationship to a group of similar works in the collections of the National Portrait Gallery, London, and the Society of Antiquaries. Due to previous conservation treatments of the painting, the conventional transmission X-radiograph image was difficult to interpret. As a result, the painting underwent high-definition X-ray fluorescence (XRF) elemental mapping on the X-ray fluorescence microscopy beamline of the Australian Synchrotron. Scans were conducted at 12.6 and 18.5 keV, below and above the lead (Pb) L edges, respectively. Typical scan parameters were 120 μm pixel size at 7 ms dwell time, with the largest scan covering an area 545 × 287 mm2 collected in 23 h (10.8 MP). XRF mapping of the panel has guided the conservation treatment of the painting and the revelation of previously obscured features. It has also provided insight into the process of making of the painting. The informative and detailed elemental maps, alongside ultra-high-definition scans of the painting undertaken before and after varnish and over-paint removal, have assisted in comparison of the finely painted details with the London paintings. The resolution offered by the combination of imaging techniques identifies pigment distribution at an extremely fine scale, enabling a new understanding of the artist's paint application.

  7. Detecting the existence of Majorana fermions via the Dicke-like effect in a triple quantum-dot system

    NASA Astrophysics Data System (ADS)

    Zhang, Rong; Duan, Chen-Long; He, J. F.; Zhao, Yue-Min

    2015-09-01

    We have proposed a feasible scheme to detect the Majorana fermions via a triple quantum-dot structure coupled a normal-metal lead and a Majorana nanowire. Our results show that the conductance spectrum display the clear Dicke-like effect, and the increase of the coupling strength between the central dot and the quantum nanowire can enhance the pronounced property. The nonzero Majorana level induce the split of the conductance peak, the dip with zero value is permanently pinned at the zero Fermi level, we find that the conductance spectrum exhibit the symmetrical feature with respect to the energy levels of two side quantum dots, and the strong coupling coefficient can reduce the region of the zero conductance. Moreover, the current-noise Fano factor can approach 2 at low bias and the large Majorana level due to the Majorana-assisted resonant transport, the significant dips of the Fano curve also indicate the coherent oscillations resulting from the nonzero Majorana level. These results are expected to serve as a sensitive indication for the detection of the Majorana bound states.

  8. "Young People Are No Longer at Risk--They Are the Risk": Henry Giroux's "Youth in a Suspect Society"

    ERIC Educational Resources Information Center

    McClennen, Sophia A.

    2012-01-01

    This article analyzes Henry Giroux's recent book Youth in a Suspect Society: democracy or disposability? (Palgrave, 2009) and situates it within his post-9/11 critical interventions. Giroux has focused his recent work on theorizing, critiquing and challenging the confluence of militarization, corporatization and right-wing ideology that has…

  9. "Extraordinary Understandings" of Composition at the University of Chicago: Frederick Champion Ward, Kenneth Burke, and Henry W. Sams

    ERIC Educational Resources Information Center

    Beasley, James P.

    2007-01-01

    While Richard Weaver, R. S. Crane, Richard McKeon, and Robert Streeter have been most identified with rhetoric at the University of Chicago and its institutional return in the 1950s, the archival record demonstrates that Frederick Champion Ward, dean of the undergraduate "College" from 1947 to 1954, and Henry W. Sams, director of English in the…

  10. A Vision for the Future: Henry G. Bennett Memorial Library, Southeastern Oklahoma State University Strategic Plan, 2002-2007.

    ERIC Educational Resources Information Center

    Davis, Dorothy

    This document presents the five-year strategic plan developed by the library director, staff, and the Library Committee for the Henry G. Bennett Memorial Library, Southeastern Oklahoma State University. The goal of this plan is to provide a framework that the library can use to focus energy and resources in fulfilling the mission of the library…

  11. Measurement of Henry's Law Constants Using Internal Standards: A Quantitative GC Experiment for the Instrumental Analysis or Environmental Chemistry Laboratory

    ERIC Educational Resources Information Center

    Ji, Chang; Boisvert, Susanne M.; Arida, Ann-Marie C.; Day, Shannon E.

    2008-01-01

    An internal standard method applicable to undergraduate instrumental analysis or environmental chemistry laboratory has been designed and tested to determine the Henry's law constants for a series of alkyl nitriles. In this method, a mixture of the analytes and an internal standard is prepared and used to make a standard solution (organic solvent)…

  12. Disposable Youth/Damaged Democracy: Youth, Neoliberalism, and the Promise of Pedagogy in the Work of Henry Giroux

    ERIC Educational Resources Information Center

    Robbins, Christopher G.

    2012-01-01

    Perhaps more extensively and provocatively than any other contemporary theorist, Henry Giroux has theorized the relationship between youth and democratic public life. Beginning arguably with his first book, Ideology, Culture, and the Process of Schooling (Temple University Press, 1981), and continuing across a number of critically acclaimed works…

  13. The Inquiry into the Education of Don Henry and His Subsequent Death in the Spanish Civil War.

    ERIC Educational Resources Information Center

    Schamel, Charles E.; Schamel, Wynell B.

    1998-01-01

    Summarizes the story of Don Henry, a student at the University of Kansas in the 1930s, focusing on how he became a communist after he left home and later went to fight in the the Spanish Civil War. Provides a teaching activity on the role of universities in influencing students and their beliefs. (CMK)

  14. Is There a Role for Critical Pedagogy in Language/Culture Studies? An Interview with Henry A. Giroux

    ERIC Educational Resources Information Center

    Guilherme, Manuela

    2006-01-01

    Henry A. Giroux became established as a leading figure in radical education theory in the 1980s. Not only did he revive the arguments for civic education proposed by the main educational theorists of the 20th century, namely Dewey, Freire and others such as the reconstructionists Counts, Rugg and Brameld, but he also advanced their theories by…

  15. Disposable Youth/Damaged Democracy: Youth, Neoliberalism, and the Promise of Pedagogy in the Work of Henry Giroux

    ERIC Educational Resources Information Center

    Robbins, Christopher G.

    2012-01-01

    Perhaps more extensively and provocatively than any other contemporary theorist, Henry Giroux has theorized the relationship between youth and democratic public life. Beginning arguably with his first book, Ideology, Culture, and the Process of Schooling (Temple University Press, 1981), and continuing across a number of critically acclaimed works

  16. Teacher as Actor--Henry David Thoreau--From Room One-Eleven to Walden Pond and Beyond.

    ERIC Educational Resources Information Center

    Barto, David

    To help maintain class interest in the important themes addressed in "Walden" and "The Duties of Civil Disobedience," a high school English teacher has presented a dramatic monologue as Henry David Thoreau to his students. After much library research, the teacher used some of the props characteristic of the author, such as a walking stick and a…

  17. All Are Worthy to Know the Earth: Henry De la Beche and the Origin of Geological Literacy

    ERIC Educational Resources Information Center

    Clary, Renee M.; Wandersee, James H.

    2009-01-01

    Henry T. De la Beche (1796-1855) began his geological career within an elite circle (Geological Society of London, 1817; FRS, 1819), collaborating with influential gentlemen geologists and publishing original research. When his independent income dwindled, De la Beche managed to secure governmental funding for his mapping projects. This led to…

  18. Values, Leadership, and Quality: The Administration of Higher Education. The David D. Henry Lectures, 1979-1985.

    ERIC Educational Resources Information Center

    1990

    This book contains five lectures, delivered as part of the David D. Henry lecture series, whose common theme revolved around broadly defined issues related to the administration of higher education. The first lecture, "Quality and Equality in Health Professions Education and Service" (Lloyd C. Elam), argues that quality and equality in the…

  19. Plastic (wire-combed) grooving of a slip-formed concrete runway overlay at Patrick Henry Airport: An initial evaluation

    NASA Technical Reports Server (NTRS)

    Marlin, E. C.; Horne, W. B.

    1977-01-01

    A wire-comb technique is described for transversely grooving the surface of a freshly laid (plastic state) slip-formed concrete overlay installed at Patrick Henry Airport. This method of surface texturing yields better water drainage and pavement skid resistance than that obtained with an older conventional burlap drag concrete surface treatment installed on an adjacent portion of the runway.

  20. Henry's law constants for paint solvents and their implications on volatile organic compound emissions from automotive painting

    SciTech Connect

    Kim, B.R.; Kalis, E.M.; DeWulf, T.; Andrews, K.M.

    2000-02-01

    This paper describes experimental results of equilibrium partitioning of several significant paint solvents and formaldehyde between air and water to quantify the potential for capturing and retaining the constituents in spraybooth scrubber water during automotive painting. The compounds studied are toluene, n-butanol, methyl ethyl ketone methyl propyl ketone, methyl isobutyl ketone, methyl amyl ketone, butyl cellosolve, butyl cellosolve acetate, butyl carbitol, and n-methyl-2-pyrrolidinone. A set of field data collected at a Ford Motor Company assembly plant was also analyzed to determine whether data were consistent with the equilibrium phenomenon. The primary findings include: (a) There were more than six orders of magnitude difference in the Henry's law constants among the solvents studied. A solvent with a smaller constant is less easily stripped from water. The Henry's law constants decrease in the following order: toluene and xylenes > methyl ethyl ketone > n-butanol > butyl cellosolve acetate > butyl cellosolve > formaldehyde > butyl carbitol > n-methyl-2-pyrrolidinone. (b) Field data showed accumulation of n-methyl-2-pyrrolidinone and stable concentrations of butyl carbitol, butyl cellosolve, and n-butanol in the paint-sludge pit water during a 2-month period. Stable concentrations indicate a continuous, balanced capture and stripping of the solvents. Data were consistent with measured Henry's law constants. (c) The low Henry's law constant for formaldehyde is the result of the fact that it is hydrated when dissolved in water.

  1. Constituting Antebellum African American Identity: Resistance, Violence, and Masculinity in Henry Highland Garnet's (1843) "Address to the Slaves"

    ERIC Educational Resources Information Center

    Jasinski, James

    2007-01-01

    In August 1843 Presbyterian minister Henry Highland Garnet delivered his "Address to the Slaves of the United States of America" to the National Convention of Colored Citizens in Buffalo, NY. While often read (and almost as often dismissed) as either an unqualified call for a violent slave rebellion or, at the least, a celebration of prior acts of

  2. SENSORINEURAL HEARING PROCESSES AND DISORDERS, HENRY FORD HOSPTIAL INTERNATIONAL SYMPOSIUM (DETROIT, MICHIGAN, MARCH 25-27, 1965).

    ERIC Educational Resources Information Center

    GRAHMA, A. BRUCE, ED.

    IN ORDER TO PROVIDE BOTH CLINICIAN AND INVESTIGATOR WITH A BETTER UNDERSTANDING OF THE PROBLEMS, CAUSES, IDENTIFICATION, AND HANDLING OF SENSORINEURAL HEARING LOSSES, THE HENRY FORD HOSPITAL INVITED INVESTIGATORS IN PSYCHOACOUSTICS, OTIOLOGY, OTONEUROLOGY, PHSIOLOGY, AND AUDIOLOGY TO SHARE THEIR RESEARCH AND CLINICAL FINDINGS. THE RESULTING 40…

  3. An Analysis of Some Aspects of Social Conflict at Henry Ford Community College (1963-1973). Research Summary #4.

    ERIC Educational Resources Information Center

    Howe, Ray A.

    This paper summarizes the findings of a ten-year longitudinal research study of attitude changes among faculty resulting, at least partially, from their collective bargaining experience. The study focused on Henry Ford Community College (Michigan), using the participant-observation approach. A number of techniques for gathering qualitative…

  4. Significance of the Henri-Michaelis-Menten theory in abiotic catalysis: catechol oxidation by δ-MnO 2

    NASA Astrophysics Data System (ADS)

    Naidja, A.; Huang, P. M.

    2002-05-01

    The Henri-Michaelis-Menten theory, for more than eight decades, was only restricted to homogeneous enzymatic catalysis. A mimic of an enzymatic kinetics based on the Henri-Michaelis-Menten concept was experimentally observed in heterogeneous catalysis in the present study with δ-MnO 2 as an abiotic catalyst in the oxidation of catechol (1,2-dihydroxybenzene). Using the derived linear forms of Lineweaver-Burk or Hofstee, the data show that similar to the enzyme tyrosinase, the kinetics of the catechol oxidation catalyzed by δ-MnO 2 can be described by the Henri-Michaelis-Menten equation, V0= VmaxS/( Km+ S), where Vmax is the maximum velocity and Km the concentration of the substrate ( S) corresponding to an initial velocity ( V0) half of Vmax. By analogy to the enzymatic kinetics, the parameters Vmax and Km for an heterogeneous abiotic catalysis were derived for the first time. Further, based on the concentration of the active centers of the mineral oxide, the kinetic constants kcat and kcat/ Km, respectively, representing the turnover frequency and the efficiency of the mineral catalyst, were also determined from the derived general rate equation of Briggs and Haldane. As an abiotic catalyst, δ-MnO 2 has a paramount role in the oxidation of phenolic compounds in soil, sediment and water environments. Therefore, the present observation is of fundamental and practical significance in elucidating the affinity between an abiotic catalyst and a substrate based on the Henri-Michaelis-Menten theory.

  5. HENRY H. CHEEK AND TRANSFORMISM: NEW LIGHT ON CHARLES DARWIN'S EDINBURGH BACKGROUND.

    PubMed

    Jenkins, Bill

    2015-06-20

    Evidence for the transformist ideas espoused by Henry H. Cheek (1807-33), a contemporary of Charles Darwin's at the University of Edinburgh, sheds new light on the intellectual environment of Edinburgh in the late 1820s and early 1830s. Cheek was the author of several papers dealing with the transmutation of species influenced by the theories of Etienne Geoffroy Saint-Hilaire (1772-1844), Jean-Baptiste Lamarck (1744-1829) and the Comte de Buffon (1707-88). Some of these were read to student societies, others appeared in the Edinburgh Journal of Natural and Geographical Science, which Cheek edited between 1829 and 1831. His writings give us a valuable window onto some of the transformist theories that were circulating among Darwin's fellow medical students in the late 1820s, to which Darwin would have been exposed during his time in Edinburgh, and for which little other concrete evidence survives. PMID:26665300

  6. Anarchism and homosexuality in Wilhelmine Germany: Senna Hoy, Erich Mühsam, John Henry Mackay.

    PubMed

    Fähnders, W

    1995-01-01

    Homosexuality and its social and legal suppression were heatedly discussed in early twentieth-century Germany, including on the left. Among the anarchists, positions with markedly diverse forms of argument were espoused by such prominent advocates of individualist anarchism as John Henry Mackay and by others coming from the Bakuninist tradition, such as Senna Hoy and Erich Mühsam. Their writings evidence that prior to World War I and into the 1920s, German anarchists--especially when compared with the Social Democrats--intervened consistently on behalf of individual self-determination extending into the sexual sphere, even though an undercurrent of hostility toward homosexuals persisted within the leftist movement as a whole. PMID:8666752

  7. A study in inspiration: Charles Henry Turner (1867--1923) and the investigation of insect behavior.

    PubMed

    Abramson, Charles I

    2009-01-01

    Charles Henry Turner was an African American scientist who, while eking out a living as a high school science teacher, made important advances in the study of insect learning and behavior. Contributions include the development of research methods, investigations of color vision and pattern vision in honey bees, and the first demonstration of Pavlovian conditioning in an insect. This review begins with a biography and continues with a summary of his major research accomplishments. Also included are quotations from his publications and from people who knew him. In addition, the question is raised as to why Turner did not receive an academic appointment, and similar data of racial disparity are presented on the small number of African American entomologists. It is suggested that the story of Turner can be used to increase interest in entomology, especially among African Americans. PMID:18817509

  8. A new approach to a century-old problem: Henri-Michaelis-Menten enzyme kinetics

    NASA Astrophysics Data System (ADS)

    Berberan-Santos, Mário N.

    2012-12-01

    A new approach to Henri-Michaelis-Menten (HMM) enzyme kinetics is presented. In the first part, a simplified but useful description that stresses the cyclic nature of the catalytic process is summarized. In particular, the timedependence of the substrate concentration is obtained in a simple way that dispenses the quasi-steady-state approximation. In the second part an exact one-dimensional formulation of HMM kinetics is presented. The whole problem is condensed in a second-order non-linear autonomous differential equation, and the exact solution of HMM kinetics is given as a set of Maclaurin series. From the same evolution equation, a number of approximate solutions, some known, some new, can be derived in a systematic way. The evolution equation obtained is also well suited for the numerical computation of the concentrations of all species as a function of time for any given combination of parameters.

  9. Henry H. Cheek and transformism: new light on Charles Darwin's Edinburgh background

    PubMed Central

    Jenkins, Bill

    2015-01-01

    Evidence for the transformist ideas espoused by Henry H. Cheek (1807–33), a contemporary of Charles Darwin's at the University of Edinburgh, sheds new light on the intellectual environment of Edinburgh in the late 1820s and early 1830s. Cheek was the author of several papers dealing with the transmutation of species influenced by the theories of Étienne Geoffroy Saint-Hilaire (1772–1844), Jean-Baptiste Lamarck (1744–1829) and the Comte de Buffon (1707–88). Some of these were read to student societies, others appeared in the Edinburgh Journal of Natural and Geographical Science, which Cheek edited between 1829 and 1831. His writings give us a valuable window onto some of the transformist theories that were circulating among Darwin's fellow medical students in the late 1820s, to which Darwin would have been exposed during his time in Edinburgh, and for which little other concrete evidence survives. PMID:26665300

  10. Direct volumetric measurement of gas oversolubility in nanoliquids: beyond Henry's law.

    PubMed

    Pera-Titus, Marc; El-Chahal, Rayan; Rakotovao, Volainiana; Daniel, Cécile; Miachon, Sylvain; Dalmon, Jean-Alain

    2009-08-24

    The properties of condensed matter are strongly affected by confinement and size effects at the nanoscale. Herein, we measured by microvolumetry the increased solubility of H(2) in a series of solvents (CHCl(3), CCl(4), n-hexane, ethanol, and water) when confined in the cavities of mesoporous solids (gamma-alumina, silica, and MCM-41). Gas/liquid solubilities are enhanced by up to 15 times over the corresponding bulk values for nanoliquid sizes smaller than 15 nm as long as gas/liquid interfaces are mesoconfined in a porous network. Although Henry's law constant apparently no longer applies under these confinement, the concentration of dissolved H(2) still increases linearly with increasing pressure in the range 1-5 bar. We discuss the role and main implications of surface excess concentrations at mesoconfined gas/liquid interfaces in enhancing gas solubility. PMID:19691041

  11. Henry' law and gaz phase disappearance solved as a complementarity problem

    NASA Astrophysics Data System (ADS)

    Ben Gharbia, I.; Gilbert, Jean-Charles; Jaffré, Jérômé

    2010-05-01

    In a two-phase (liquid-gas) two-component (water-hydrogen) system we discuss the formulation of the possible dissolution of hydrogen in the liquid phase. The problem is formulated as a set of nonlinear partial differential equations with complementary constraints and we show how Henry's law fits in a phase diagram. Furthermore we show how this complementarity problem can be solved using nonsmooth Newton iterations. The problem is arising in a deep underground repository where hydrogen is produced by the corrosion of nuclear waste packages and we show our first numerical results. This work was partially supported by ANDRA and GNR MoMaS (PACEN/CNRS, ANDRA, BRGM, CEA, EDF, IRSN).

  12. New Hypersonic Shock Tunnel at the Laboratory of Aerothermodynamics and Hypersonics Prof. Henry T. Nagamatsu

    SciTech Connect

    Toro, P. G. P.; Minucci, M. A. S.; Chanes, J. B. Jr; Oliveira, A. C.; Gomes, F. A. A.; Myrabo, L. N.; Nagamatsu, Henry T.

    2008-04-28

    The new 0.60-m. nozzle exit diameter hypersonic shock tunnel was designed to study advanced air-breathing propulsion system such as supersonic combustion and/or laser technologies. In addition, it may be used for hypersonic flow studies and investigations of the electromagnetic (laser) energy addition for flow control. This new hypersonic shock tunnel was designed and installed at the Laboratory for of Aerothermodynamics and Hypersonics Prof. Henry T. Nagamatsu, IEAv-CTA, Brazil. The design of the tunnel enables relatively long test times, 2-10 milliseconds, suitable for the experiments performed at the laboratory. Free stream Mach numbers ranging from 6 to 25 can be produced and stagnation pressures and temperatures up to 360 atm. and up to 9,000 K, respectively, can be generated. Shadowgraph and schlieren optical techniques will be used for flow visualization.

  13. The inertia of sex: Henry Adams on family and the politics of unconditional love.

    PubMed

    Duff, Brian

    2010-01-01

    This article offers a reassessment of the contemporary relevance of the political thought of Henry Adams through a focus on his ideas about the relationship between family and politics. Adams' ideas have been dismissed by contemporary thinkers, like Richard Rorty, who rely on similar ideas about the role family should play in politics. The article traces the role of ideas about family as a unifying theme in Adams' history, fiction, and autobiography. It shows both why Adams believed familial sentiments, especially feminine and motherly love, were crucial to political unity, and why he thought these sentiments had become increasingly difficult to rely upon. In showing how Adams wrestled with the difficulties that emerge in putting familial sentiments to use for politics, the article suggests that Adams' ideas offer useful lessons for contemporary thinkers interested in the relationship between family and politics. PMID:20715339

  14. Style and non-style in anatomical illustration: From Renaissance Humanism to Henry Gray.

    PubMed

    Kemp, Martin

    2010-02-01

    Style is a familiar category for the analysis of art. It is less so in the history of anatomical illustration. The great Renaissance and Baroque picture books of anatomy illustrated with stylish woodcuts and engravings, such as those by Charles Estienne, Andreas Vesalius and Govard Bidloo, showed figures in dramatic action in keeping with philosophical and theological ideas about human nature. Parallels can be found in paintings of the period, such as those by Titian, Michelangelo and Hans Baldung Grien. The anatomists also claimed to portray the body in an objective manner, and showed themselves as heroes of the discovery of human knowledge. Rembrandt's painting of Dr Nicholas Tulp is the best-known image of the anatomist as hero. The British empirical tradition in the 18th century saw William Cheselden and William Hunter working with techniques of representation that were intended to guarantee detailed realism. The ambition to portray forms life-size led to massive volumes, such as those by Antonio Mascagni. John Bell, the Scottish anatomist, criticized the size and pretensions of the earlier books and argued for a plain style adapted to the needs of teaching and surgery. Henry Gray's famous Anatomy of 1858, illustrated by Henry Vandyke Carter, aspired to a simple descriptive mode of functional representation that avoided stylishness, resulting in a style of its own. Successive editions of Gray progressively saw the replacement of Gray's method and of all his illustrations. The 150th anniversary edition, edited by Susan Standring, radically re-thinks the role of Gray's book within the teaching of medicine. PMID:20447244

  15. The Impact of the Henry Draper Catalogue on 20th-century Astronomy

    NASA Astrophysics Data System (ADS)

    Welther, B. L.

    1999-12-01

    By 1900 there was a definite need to update the great star catalogues of the 19th century. First of all, the coordinates in them were pinned to the epoch of 1875. Then, too, the magnitudes were not on any systematic scale. Finally, they were all published before astronomers had any ideas or data for classifying large numbers of stars by their spectra. Under the leadership of Edward Pickering and the financing of Anna Palmer Draper, the work on the Henry Draper Memorial began at Harvard College Observatory in the late 1880s. Its primary goal was to gather and classify the photographic spectra of about 100,000 stars. As a test case, Pickering had Williamina Fleming develop a simple classification scheme and apply it to the spectra of about 10,000 stars. The Draper Catalogue was published in 1890. For the next two decades, Pickering worked to have astronomers approve the Harvard Classification scheme. After that happened in 1910 at the meeting of the International Solar Union, Annie Jump Cannon began the project of classifying 100,000 stars. She was so efficient that she completed the work in two years. Rather than limiting it to that number at that time, she continued classifying spectra for another two years for a total of 225,300 stars. Although Cannon completed the classification in 1915, it was not until 1918 that the first of nine volumes of the Henry Draper Catalogue was published. At that time, it was greeted with enthusiasm and congratulations from eminent astronomers around the world: Jacobus Kapteyn in the Netherlands, Herbert Hall Turner in England, Harlow Shapley in California, to name a few. Today, the HD Catalogue is now online and endures as a source of coherent data for a wide variety of ongoing investigations of the Milky Way.

  16. Style and non-style in anatomical illustration: From Renaissance Humanism to Henry Gray

    PubMed Central

    Kemp, Martin

    2010-01-01

    Style is a familiar category for the analysis of art. It is less so in the history of anatomical illustration. The great Renaissance and Baroque picture books of anatomy illustrated with stylish woodcuts and engravings, such as those by Charles Estienne, Andreas Vesalius and Govard Bidloo, showed figures in dramatic action in keeping with philosophical and theological ideas about human nature. Parallels can be found in paintings of the period, such as those by Titian, Michelangelo and Hans Baldung Grien. The anatomists also claimed to portray the body in an objective manner, and showed themselves as heroes of the discovery of human knowledge. Rembrandt’s painting of Dr Nicholas Tulp is the best-known image of the anatomist as hero. The British empirical tradition in the 18th century saw William Cheselden and William Hunter working with techniques of representation that were intended to guarantee detailed realism. The ambition to portray forms life-size led to massive volumes, such as those by Antonio Mascagni. John Bell, the Scottish anatomist, criticized the size and pretensions of the earlier books and argued for a plain style adapted to the needs of teaching and surgery. Henry Gray’s famous Anatomy of 1858, illustrated by Henry Vandyke Carter, aspired to a simple descriptive mode of functional representation that avoided stylishness, resulting in a style of its own. Successive editions of Gray progressively saw the replacement of Gray’s method and of all his illustrations. The 150th anniversary edition, edited by Susan Standring, radically re-thinks the role of Gray’s book within the teaching of medicine. PMID:20447244

  17. Water quality of Nippersink Creek and Wonder Lake, McHenry County, Illinois, 1994-2001

    USGS Publications Warehouse

    Dupre, David H.; Robertson, Dale M.

    2004-01-01

    Wonder Lake, McHenry County, Illinois was formed when an earthen dam was constructed across Nippersink Creek in 1929. The U.S. Geological Survey (USGS), in cooperation with the McHenry County Soil and Water Conservation District, operated two streamflow and water-quality monitoring sites (upstream and downstream of Wonder Lake) from July 1994 through June 1997, and examined the water quality of the lake during 1999-2000. From 1999 through 2001, the USGS National Water-Quality Assessment Program operated the same upstream monitoring station to assess the streamflow, sediments, nutrients, and other chemical and physical characteristics of Nippersink Creek. Interpolation and regression methods were used to compute loads of sediment and nutrients delivered to Wonder Lake through Nippersink Creek by the combination of data sets collected as part of these studies. Since the formation of Wonder Lake, sediment and nutrient loading from Nippersink Creek has caused lake water-quality degradation. Wonder Lake effectively trapped 75 percent of the 15,900 tons of suspended sediment delivered during 1994-97. The average daily sediment load delivered during 1994-2001 was 25 tons. High sediment loading from the watershed reduces water clarity and hinders lake navigation. Nutrient loading from Nippersink Creek results in eutrophic conditions within Wonder Lake as evaluated on a Trophic State Index. The load of total phosphorus trapped in Wonder Lake is from 6 to 28 percent of the delivered load from Nippersink Creek. If the lake could be restored to its original capacity, the sediment trapping efficiency may be increased.

  18. Tropospheric light alcohols, carbonyls, and acetonitrile: Concentrations in the southwestern United States and Henry's Law data

    NASA Astrophysics Data System (ADS)

    Snider, Jefferson R.; Dawson, G. A.

    1985-04-01

    Aliphatic alcohols (C1 - C4), aldehydes (C1 - C2) and ketones (C3 - C4) have been determined at Tucson, Arizona, and at two rural sites about 40 km distant. Acetonitrile was also measured at the rural sites. The method involved condensation sampling, condensate preconcentration, and gas chromatography. Henry's law coefficients were required for all components and were determined. Mean concentrations in Tucson were higher than those in the rural areas by factors typically between 2 and 8; urban formaldehyde was only slightly elevated. Mean alcohol concentrations ranged from 7.9 ppb (C1) to 0.12 ppb (C4) within the city and from 2.6 ppb (C1) to 0.06 ppb (C4) at the rural sites. Acetone was found at 12 ppb in the city and 2.8 ppb at the rural sites. Concentrations of butanone were a factor of 5 lower. Acetaldehyde, at 23 ppb (city) and 6.9 ppb (rural), far exceeded formaldehyde concentrations (1.8 ppb in the city, and 1.5 ppb at the rural sites). Acetonitrile was found at the rural sites at a mean concentration of 60 ppt. A dimensionless Henry's law coefficient (mol L-1 of liquid/mol L-1 of vapor) was suprisingly similar for the alcohols at 0°C, ranging between 2×104 and 3.4×104 (900-1500 mol L-1 atm-1) the ketones were a factor of 10 lower. For acetaldehyde the coefficient was 1.7×103 (76 mol L-1 atm-1) and for acetonitrile 3.7×103 (165 mol L-1 atm-1). Concentrations of oxygenated organics in the condensates and in precipitation were compared; it was tentatively concluded that concentration differences of the carbonyls were consistent with these species being produced within the cloud, for example, by aqueous photochemistry.

  19. FRW cosmological models in Brans-Dicke theory of gravity with variable q and dynamical \\varLambda-term

    NASA Astrophysics Data System (ADS)

    Chand, Avtar; Mishra, R. K.; Pradhan, Anirudh

    2016-02-01

    Exact solution of modified Einstein's field equations are considered within the scope of spatially homogeneous and isotropic Fraidmann-Robertson-Walker (FRW) space-time filled with perfect fluid in the frame work of Brans-Dicke scalar-tensor theory of gravity. In this paper we have investigated the flat, open and closed FRW models and the effect of dynamic cosmological term on the evolution of the universe. Two types of FRW cosmological models are obtained by setting the power law between the scalar field φ and the scale factor a and deceleration parameter (DP) q as a time dependent. The concept of time dependent DP with some proper assumptions yield two type of the average scale factors (i) a(t)=[sinh(α t)]^{1/n} and (ii) a(t)=[t^{α}et]^{1/n}, α and n≠ 0 are arbitrary constants. In case (i), for 0 < n ≤ 1, it generates a class of accelerating models while for n > 1, the models of the universe exhibit phase transition from early decelerating to present accelerating phase and the transition redshift zt has been calculated and found to be in good agreement with the results from recent astrophysical observations. In case (ii), for n ≥ 2 and α = 1, we obtain a class of transit models of the universe from early decelerating to present accelerating phase. Taking into consideration the observational data, we conclude that the cosmological constant behaves as a positive decreasing function of time. The physical and geometric properties of the models are also discussed with the help of graphical presentations.

  20. Experimentally feasible set of criteria detecting genuine multipartite entanglement in n-qubit Dicke states and in higher-dimensional systems

    SciTech Connect

    Huber, Marcus; Erker, Paul; Schimpf, Hans; Gabriel, Andreas; Hiesmayr, Beatrix

    2011-04-15

    We construct a set of criteria detecting genuine multipartite entanglement in arbitrary dimensional multipartite systems. These criteria are optimally suited for detecting multipartite entanglement in n-qubit Dicke states with m excitations, as shown in exemplary cases. Furthermore, they can be employed to detect multipartite entanglement in different states related to quantum cloning, decoherence-free communication, and quantum secret sharing. In a detailed analysis, we show that the criteria are also more robust to noise than any other criterion known so far, especially with increasing system size. Furthermore, it is shown that the number of required local observables scales only polynomially with size, thus making the criteria experimentally feasible.

  1. Discharge ratings for control structures at McHenry Dam on the Fox River, Illinois

    USGS Publications Warehouse

    Fisk, G.G.

    1988-01-01

    Twenty-three measurement of discharge were used to determine discharge ratings for the five adjustable sluice gates, spillway and fish ladder at McHenry Dam on the Fox River in Illinois. Discharge ratings were determined for free weir, free orifice, and submerged orifice flow regimes. Hydraulic conditions that identify flow regimes at McHenry Dam are defined by ratios between headwater depth (h1), tailwater depth (h3), and gate opening (hg). Flow under the sluice gates is identified as weir flow when the ratio of gate opening to headwater depth is greater than 0.73, and as orifice flow when hg/H1 is less than 0.73. Free orifice flow occurs when the ratio of tailwater depth to gate opening is less than 1.3, and submerged orifice flow occurs when h3/hg is greater than 1.3. Flow under the sluice gates is identified as free weir flow when the ratio of tailwater depth to headwater depth is less than 0.75, and as submerged weir flow when h3/h1 is greater than 0.75. Flow over the spillway is identified as free weir flow when the ratio of tailwater depth to headwater depth is less than 0.60, and as submerged weir flow when h3/h1 is greater than 0.60. Discharge coefficients to be used in equations to compute discharge for various hydraulic conditions were determined. Four discharge measurement, ranging from 169 to 2990 cu ft/sec, were used to define discharge coefficients that varies from 2.61 to 3.14 for free weir flow over the spillway. Nineteen discharge measurements, ranging from 180 to 4050 cu ft/sec, were used to define discharge coefficients for free weir, free orifice, and submerged orifice flow under the sluice gates. The average value of the discharge coefficient for free weir flow under the sluice gates is 3.17. Discharge coefficients for free orifice flow varied from 0.48 to 0.66 and the discharge coefficients for submerged orifice flow from the two measurements were 0.59 and 0.67. (Author 's abstract)

  2. The death of Henry II, King of France (1519-1559). From myth to medical and historical fact.

    PubMed

    Zanello, Marc; Charlier, Philippe; Corns, Robert; Devaux, Bertrand; Berche, Patrick; Pallud, Johan

    2015-01-01

    On 30 June 1559, Henry II, King of France, was mortally wounded in the head by a lance during a jousting match. Despite the best efforts of his physicians, Ambroise Paré and Andreas Vesalius, King Henry died 11 days later. This article, based on previously unpublished evidence, aims at examining the historical account of his death against modern medical practice to establish the probable cause of the king's death. We also discuss what treatments the doctors in the sixteenth century may have had to offer. Historical accounts of the joust provide details of the incident including the position of the visor of the king's helmet. Descriptions of the wood fragments removed from the right orbit by Italian observers and a new translation of the autopsy by Andreas Vesalius allow an accurate description of the actual injury. Our research counters previous theories and concludes that Henry II was the victim of craniofacial trauma involving the right eye and that he died from periorbital cellulitis caused by a retained foreign body in the wound, complicated by a left interhemispheric empyema preceded by a traumatic interhemispheric haematoma. It would appear that the royal court doctors advocated a wait-and-see strategy, with little actual input from Ambroise Paré or Andreas Vesalius, with a clearly regrettable outcome. PMID:25421951

  3. Determination of Henry's law constants of organochlorine pesticides in deionized and saline water as a function of temperature

    NASA Astrophysics Data System (ADS)

    Cetin, Banu; Ozer, Serdar; Sofuoglu, Aysun; Odabasi, Mustafa

    The Henry's law constant ( H) is an important parameter that is required to estimate the air-water exchange of semi-volatile organic compounds. Henry's law constants for 17 banned/restricted/currently used organochlorine pesticides (OCPs) were experimentally determined using a gas-stripping technique in deionized and saline water (3%) over a temperature range of 5-35 °C. H values (at 25 °C) ranged between 0.066±0.037 Pa m 3 mol -1 (endosulfan II) and 62.0±24.2 Pa m 3 mol -1 (heptachlor) in deionized water while the range in saline water was 0.28±0.03 Pa m 3 mol -1 ( γ-HCH) and 135.2±31.3 Pa m 3 mol -1 (heptachlor). The increase in dimensionless Henry's law constants ( H') for OCPs over the studied temperature range was between 3 ( γ-HCH)-19 times (chlorpyrifos) and 3 (endosulfan II)-80 times ( trans-nonachlor) in deionized and saline water, respectively. The calculated enthalpies of phase change (Δ HH) were within the ranges previously reported for OCPs and other organic compounds (23.8-100.2 kJ mol -1). The salting-out constant, ks, ranged between 0.04 ( γ-HCH) and 1.80 L mol -1 (endosulfan II) indicating the importance of assessing the H values of OCPs in saline water to accurately determine their partitioning and fate in seawater.

  4. Henry's law constant of N,N-dichloromethylamine: application to the contamination of the atmosphere of indoor swimming pools.

    PubMed

    Cimetiere, Nicolas; De Laat, Joseph

    2009-10-01

    The volatility of N,N-dichloromethylamine (DCMA), a disinfection by-product formed during chlorination of swimming pool water, has been investigated in the present work. The Henry's law constants for DCMA were experimentally determined at five temperatures (5, 15, 25, 35 and 45 degrees C) using the single equilibrium technique. The volumic ratio between the gas and the water phases in the headspace vessels ranged from 1 to 60 and the initial concentration of DCMA in the aqueous solutions was approximately 2mM. The values obtained for the dimensionless Henry's law constant varied from 0.047 at 5 degrees C to 0.312 at 45 degrees C. The temperature dependence of the Henry's law constants followed the van't Hoff equation. Trace levels of DCMA (16-70 microg m(-3)) were detected in the atmosphere of an indoor swimming pool whereas the concentrations of DCMA in water pools were in the range 8.8-15 microg L(-1). PMID:19700184

  5. Biological and molecular mechanisms of sulfur mustard analogue-induced toxicity in JB6 and HaCaT cells: possible role of ataxia telangiectasia-mutated/ataxia telangiectasia-Rad3-related cell cycle checkpoint pathway.

    PubMed

    Tewari-Singh, Neera; Gu, Mallikarjuna; Agarwal, Chapla; White, Carl W; Agarwal, Rajesh

    2010-06-21

    Effective medical treatment and preventive measures for chemical warfare agent sulfur mustard (HD)-caused incapacitating skin toxicity are lacking, because of limited knowledge of its mechanism of action. The proliferating basal epidermal cells are primary major sites of attack during HD-caused skin injury. Therefore, employing mouse JB6 and human HaCaT epidermal cells, here, we investigated the molecular mechanism of HD analogue 2-chloroethyl ethyl sulfide (CEES)-induced skin cytotoxicity. As compared to the control, up to 1 mM CEES treatment of these cells for 2, 4, and 24 h caused dose-dependent decreases in cell viability and proliferation as measured by DNA synthesis, together with S and G2-M phase arrest in cell cycle progression. Mechanistic studies showed phosphorylation of DNA damage sensors and checkpoint kinases, ataxia telangiectasia-mutated (ATM) at ser1981 and ataxia telangiectasia-Rad3-related (ATR) at ser428 within 30 min of CEES exposure, and modulation of S and G2-M phase-associated cell cycle regulatory proteins, which are downstream targets of ATM and ATR kinases. Hoechst-propidium iodide staining demonstrated that CEES-induced cell death was both necrotic and apoptotic in nature, and the latter was induced at 4 and 24 h of CEES treatment in HaCaT and JB6 cells, respectively. An increase in caspase-3 activity and both caspase-3 and poly(ADP-ribose)polymerase (PARP) cleavage coinciding with CEES-caused apoptosis in both cell lines suggested the involvement of the caspase pathway. Together, our findings suggest a DNA-damaging effect of CEES that activates ATM/ATR cell cycle checkpoint signaling as well as caspase-PARP pathways, leading to cell cycle arrest and apoptosis/necrosis in both JB6 and HaCaT cells. The identified molecular targets, quantitative biomarkers, and epidermal cell models in this study have the potential and usefulness in rapid development of effective prophylactic and therapeutic interventions against HD-induced skin toxicity. PMID:20469912

  6. Mineral resources of the Henry's Lake Wilderness Study Area, Fremont County, Idaho

    SciTech Connect

    Tysdal, R.G.; Kulik, D.M.; Peters, T.J.

    1988-06-10

    A mineral-resource survey of the 350-acre Henry's Lake Wilderness Study Area (ID-035-077) was made in 1986-87. No identified resources (known) or currently active claims exist within or adjacent to the wilderness study area. There is potential for several types of undiscovered mineral resources within the study area. The southwestern part of the wilderness study area, along the Madison Range fault, is rated as having a moderate energy-resource potential for geothermal water; the remainder of the study area has a low potential for resources of this commodity. A small outcrop of marble in the southernmost part of the study area has a low mineral-resource potential for talc; for talc in marble possibly concealed beneath the study area the mineral-resource potential is rated as unknown. The study area has a low mineral-resource potential for iron in hematite-mineralized amphibolite gneiss, and for gold, silver, and uranium. The area has no mineral-resource potential for phosphate, because the host strata have been eroded; and no resource potential for oil and gas.

  7. Henry's law constants measurements of alachlor and dichlorvos between 283 and 298 K

    NASA Astrophysics Data System (ADS)

    Gautier, Céline; Le Calvé, Stéphane; Mirabel, Philippe

    In this work, a dynamic system based on the water/air equilibrium at the interface within the length of a microporous tube was used to determine experimentally the Henry's law constants (HLC) of two pesticides: alachlor and dichlorvos. The measurements were conducted over the range 283-298 K. At 298 K, HLC were found to be equal to HLC=(14±2)×10 3 and HLC=(4.0±0.6)×10 3 (in units of M atm -1) for alachlor and dichlorvos, respectively. The obtained data were use to derive the following Arrhenius expressions: HLC=(8.0±3.4)×10 -10 exp((9200±1600)/ T) for alachlor and HLC=(2.8±0.4)×10 -13 exp((11 100±1500)/ T) for dichlorvos. At a cumulus temperature of 283 K, the fraction of alachlor and dichlorvos in the atmospheric aqueous phase is about 45% and 22%, respectively. Assuming that annual rainfall rate is 1 m/year, the wet deposition lifetimes were then estimated to be of the order of 2.8 days for alachlor and 5.6 days for dichlorvos. These latter are used to compare the relative importance of wet removal towards the lifetime in the gas phase.

  8. Tools for Groundwater Protection Planning: An Example from McHenry County, Illinois, USA.

    PubMed

    BERG; CURRY; OLSHANSKY

    1999-04-01

    / This paper presents an approach for producing aquifer sensitivity maps from three-dimensional geologic maps, called stack-unit maps. Stack-unit maps depict the succession of geologic materials to a given depth, and aquifer sensitivity maps interpret the successions according totheir ability to transmit potential contaminants. Using McHenry County, Illinois, as a case study, stack-unit maps and an aquifer sensitivity assessment were made to help land-use planners, public health officials, consultants, developers, and the public make informed decisions regarding land use. A map of aquifer sensitivity is important for planning because the county is one of the fastest growing counties in the nation, and highly vulnerable sand and gravel aquifers occur within 6 m of ground surface over 75% of its area. The aquifer sensitivity map can provide guidance to regulators seeking optimal protection of groundwater resources where these resources are particularly vulnerable. In addition, the map can be used to help officials direct waste-disposal and industrial facilities and other sensitive land-use practices to areas where the least damage is likely to occur, thereby reducing potential future liabilities. KEY WORDS: Geologic mapping; Groundwater; Aquifers; Aquifer sensitivity; Land-use planning PMID:9950695

  9. Water in sand and gravel deposits in McHenry County, Illinois

    USGS Publications Warehouse

    Nicholas, J.R.; Krohelski, J.T.

    1984-01-01

    McHenry County, Illinois derives a major part of its ground-water supply from unconsolidated sand and gravel aquifers. Twenty-six public systems tap these aquifers for all or part of their supply. The county contains two types of sand and gravel aquifers--unconfined aquifers which are at or near the land surface, and semiconfined aquifers which are overlain by one or more till members. A map of water levels in unconfined and semiconfined aquifers shows that moraines and other topographically high features are ground-water divides of local flow systems. Distances from ground-water divides to discharge areas are a few miles or less. The quality of the ground water is good for most uses, although treatment may be required to reduce hardness (median concentration is 340 milligrams per liter) and dissolved iron (median concentrations is 140 micrograms per liter). Ground water is a calcium magnesium bicarbonate type. The range of specific conductance is from 260 to 1,170 micromhos. Values are higher near towns. (USGS)

  10. Water in sand and gravel deposits in McHenry County, Illinois

    SciTech Connect

    Nicholas, J.R.; Krohelski, J.T.

    1984-01-01

    Two general types of sand and gravel occur in McHenry County - unconfined aquifers, which are at or near the land surface, and semiconfined aquifers, which are overlain by one or more till members. Water levels in both types of aquifers are mapped from measurements made in the spring of 1979. The water-level configuration roughly parallels the land surface. Moraines and other topographically high features coincide with ground-water divides of local flow systems. Flow paths from divides to low-lands are relatively short - a few miles or less. Recharge predominates in uplands, whereas discharge predominates in lowlands. Water levels change seasonally in response to variations in recharge and discharge conditions. The highest water levels occur during spring and decline during the rest of the year. Ground water is of the calcium magnesium bicarbonate type and is of acceptable quality for most uses. However, for domestic and some industrial uses, treatment may be required to reduce hardness and to remove iron. Hardness ranged from 130 to 600 milligrams per liter as calcium carbonate, and dissolved iron concentrations ranges from less than 10 to 6200 micrograms per liter. The specific conductance of ground water ranged from 260 to 1170 micromhos per centimeter. Specific conductance exceeded 1000 micromhos per centimeter near Huntley and Hebron. Nitrate concentration was generally less than 0.68 milligrams per liter. 22 refs., 9 figs., 3 tabs.

  11. Effects of temperature, pH, and ionic strength on the Henry's law constant of triethylamine

    NASA Astrophysics Data System (ADS)

    Leng, Chun-Bo; Roberts, Jason E.; Zeng, Guang; Zhang, Yun-Hong; Liu, Yong

    2015-05-01

    The Henry's law constants (KH) of triethylamine (TEA) in pure water and in 1-octanol were measured for the temperatures pertinent to the lower troposphere (278-298 K) using a bubble column system coupled to a Fourier transform infrared spectrometer. The KH values of TEA in water and 1-octanol at 298 K are 5.75 ± 0.86 mol L-1 atm-1 and 115.62 ± 5.78 mol L-1 atm-1. The KH values display strong dependence on temperature, pH, and ionic strength. The characteristic times for TEA to establish an equilibrium between gas and droplet with a size of 5.6 µm are ~33 s (298 K, pH = 5.6); ~8.9 × 102 s (278 K, pH = 5.6); ~1.3 × 103 s (298 K, pH = 4.0); and 3.6 × 104 s (278 K, pH = 4.0). The evaluation of TEA partitioning between gas phase and condensed phase implies that TEA predominantly resides in rainwater, and TEA loss to organic aerosol is negligible.

  12. Health-hazard evaluation report HETA 87-288-1828, Henry Ford High School, Detroit, Michigan

    SciTech Connect

    Crandall, M.S.

    1987-08-01

    In response to a request from teachers in the Henry Ford High School (SIC-8211) located in Detroit, Michigan, a study was made of possible malfunctions of polychlorinated biphenyl (PCB)-containing fluorescent-light ballasts which were suspected of being causally related to increased occurrences of respiratory symptoms, sore throats, and headaches. Surface wipe samples and air samples were analyzed in four classrooms where complaints had originated and in three reference rooms where no symptoms had been reported. No levels of PCB air concentrations were found exceeding 0.1 microgram/cubic meter (microg/m/sup 3/) in any reference room. In three of four index rooms, PCB concentrations were recorded at 0.2, 0.3, and 0.4 microg/m/sup 3/, which were below the NIOSH recommended exposure level (1microg/m3 time weighted average). Surface-wipe samples from student and teacher desk tops averaged 1.3 micrograms per square meter (microg/m/sup 2/), with a maximum of 2.4microg/m/sup 2/. On low contact surfaces, PCB concentrations ranged from 1.6 to 9.2microg/m/sup 2/.

  13. Tools for groundwater protection planning: An example from McHenry County, Illinois, USA

    USGS Publications Warehouse

    Berg, R.C.; Curry, B. Brandon; Olshansky, R.

    1999-01-01

    This paper presents an approach for producing aquifer sensitivity maps from three-dimensional geologic maps, called stack-unit maps. Stack-unit maps depict the succession of geologic materials to a given depth, and aquifer sensitivity maps interpret the successions according to their ability to transmit potential contaminants. Using McHenry County, Illinois, as a case study, stack-unit maps and an aquifer sensitivity assessment were made to help land-use planners, public health officials, consultants, developers, and the public make informed decisions regarding land use. A map of aquifer sensitivity is important for planning because the county is one of the fastest growing counties in the nation, and highly vulnerable sand and gravel aquifers occur within 6 m of ground surface over 75% of its area. The aquifer sensitivity map can provide guidance to regulators seeking optimal protection of groundwater resources where these resources are particularly vulnerable. In addition, the map can be used to help officials direct waste-disposal and industrial facilities and other sensitive land-use practices to areas where the least damage is likely to occur, thereby reducing potential future liabilities.

  14. The pleasures and perils of prophetic advocacy: Henry E. Sigerist and the politics of medical reform.

    PubMed Central

    Fee, E

    1996-01-01

    Henry E. Sigerist, an internationally renowned medical historian, played a surprisingly important and visible role in American medical politics in the 1930s and 1940s. Born in Paris of Swiss parents, he was professor in Leipzig, Germany, before coming to the United States in 1932 as professor of the history of medicine at Johns Hopkins University. Once in America. Sigerist became deeply involved in medical politics and the campaign for national health insurance. He argued that individualized medical practice was outdated and should gradually be superseded by state-run and state-financed health services. National health insurance was but one step in this historical progression. Sigerist thus lent the weight of history itself to the cause of medical care reform. The charming and erudite Sigerist was welcomed by the leaders of academic medicine in America. Soon, he emerged as a spokesman of the left wing of the medical profession, an effective and popular speaker and an impassioned advocate of socialized medicine. This paper traces Sigerist's political ideas and activities, and his contributions toward medical care reform in the United States. Images p1639-a p1642-a PMID:8916536

  15. Comparing and interpreting three-dimensional fabric results, Henry Mountains porphyry, Utah, U.S.A.

    NASA Astrophysics Data System (ADS)

    Horsman, E.; Ketcham, R. A.

    2006-12-01

    We compare and interpret results of several rock fabric analysis techniques, as applied to samples of plagioclase-hornblende porphyry from a well-exposed small intrusion in the Henry Mountains of southern Utah, U.S.A. The fabric analysis techniques considered include field measurements of phenocryst shape-preferred orientation, anisotropy of magnetic susceptibility, anisotropy of anhysteric remanent magnetization, high- resolution X-ray computed tomography, and three-dimensional shape-preferred orientation calculated from two- dimensional image analysis. The exceptional exposure of the studied intrusion allows us to confidently infer magma flow kinematics and to estimate the minimum amount of shear strain accommodated by the magma during emplacement. Our study therefore provides an important contrast to most studies, in which flow kinematics and magmatic strain are inferred from rock fabric in incompletely exposed intrusions. We find that observed fabric orientations often closely mimic local intrusion geometry, making it difficult to infer general magmatic flow kinematics from fabric near contacts. At each analysis location, orientation results from each technique generally agree but fabric shape and magnitude parameters vary widely between techniques. Fabric shape may therefore not provide useful information about flow kinematics (e.g. constrictional vs. flattening flow). Similarly, fabric magnitudes plateau at moderate values and do not provide a useful strain gauge. Because each technique provides unique information, it is invariably beneficial to use more than one fabric analysis technique. Failure to check results from one technique against those from another can results in misinterpretation of intrusion flow kinematics.

  16. Effect of Henry's law constant and operating parameters on vacuum-assisted headspace solid phase microextraction.

    PubMed

    Psillakis, Elefteria; Mousouraki, Antonia; Yiantzi, Evangelia; Kalogerakis, Nicolas

    2012-06-29

    Nonequilibrium headspace solid-phase microextraction (HSSPME) sampling under vacuum conditions may dramatically improve extraction kinetics compared to regular HSSPME at room temperature. This paper investigates the effects of organic analyte properties and sampling parameters (headspace volume and sample agitation) on vacuum-assisted HSSPME (Vac-HSSPME). It was found that at room temperature, acceleration effects on extraction rates induced by reducing the total pressure of the sample container are important for those compounds where the Henry's law constant, K(H), is close or below the reported threshold values for low K(H) solutes. For these compounds evaporation rate is controlled by mass transfer resistance in the thin gas-film adjacent to the gas/sample interface and reducing the total pressure will increase evaporation rates and result in a faster overall extraction process. Conversely, for analytes with an intermediate K(H) value, Vac-HSSPME is not expected to improve extraction rates compared to regular HSSPME given that mass transfer resistance in the liquid-film becomes important. In accordance with the theory, at equilibrium, the amount of analyte extracted by the SPME fiber is not affected by the pressure conditions inside the sample container. Furthermore, Vac-HSSPME extraction kinetics for low K(H) analytes were marginally affected by the tested change in headspace volume as evaporation rates dramatically increase under reduced pressure conditions and the sample responds much faster to the concentration drops in the headspace when compared to regular HSSPME. At equilibrium however, increasing the headspace volume may result in a loss of sensitivity for Vac-HSSPME similar to that observed for regular HSSPME. As expected, stirring the liquid sample was found to improve Vac-HSSPME. Finally, the method yielded a linearity of 0.998 and detection limits in the ppt level. The precision varied between 1.8% and 8.4%. PMID:22621889

  17. Flexure and faulting of sedimentary host rocks during growth of igneous domes, Henry Mountains, Utah

    USGS Publications Warehouse

    Jackson, M.D.; Pollard, D.D.

    1990-01-01

    A sequence of sedimentary rocks about 4 km thick was bent, stretched and uplifted during the growth of three igneous domes in the southern Henry Mountains. Mount Holmes, Mount Ellsworth and Mount Hillers are all about 12 km in diameter, but the amplitudes of their domes are about 1.2, 1.85 and 3.0 km, respectively. These mountains record successive stages in the inflation of near-surface diorite intrusions that are probably laccolithic in origin. The host rocks deformed along networks of outcrop-scale faults, or deformation bands, marked by crushed grains, consolidation of the porous sandstone and small displacements of sedimentary beds. Zones of deformation bands oriented parallel to the beds and formation contacts subdivided the overburden into thin mechanical layers that slipped over one another during doming. Measurements of outcrop-scale fault populations at the three mountains reveal a network of faults that strikes at high angles to sedimentary beds which themselves strike tangentially about the domes. These faults have normal and reverse components of slip that accommodated bending and stretching strains within the strata. An early stage of this deformation is displayed at Mount Holmes, where states of stress computed from three fault samples correlate with the theoretical distribution of stresses resulting from bending of thin, circular, elastic plates. Field observations and analysis of frictional driving stresses acting on horizontal planes above an opening-mode dislocation, as well as the paleostress analysis of faulting, indicate that bedding-plane slip and layer flexure were important components of the early deformation. As the amplitude of doming increased, radial and circumferential stretching of the strata and rotation of the older faults in the steepening limbs of the domes increased the complexity of the fault patterns. Steeply-dipping, map-scale faults with dip-slip displacements indicate a late-stage jostling of major blocks over the central magma chamber. Radial dikes pierced the dome and accommodated some of the circumferential stretching. ?? 1990.

  18. Effective Henry's law partitioning and the salting constant of glyoxal in aerosols containing sulfate.

    PubMed

    Kampf, Christopher J; Waxman, Eleanor M; Slowik, Jay G; Dommen, Josef; Pfaffenberger, Lisa; Praplan, Arnaud P; Prévôt, André S H; Baltensperger, Urs; Hoffmann, Thorsten; Volkamer, Rainer

    2013-05-01

    The reversible partitioning of glyoxal was studied in simulation chamber experiments for the first time by time-resolved measurements of gas-phase and particle-phase concentrations in sulfate-containing aerosols. Two complementary methods for the measurement of glyoxal particle-phase concentrations are compared: (1) an offline method utilizing filter sampling of chamber aerosols followed by HPLC-MS/MS analysis and (2) positive matrix factorization (PMF) analysis of aerosol mass spectrometer (AMS) data. Ammonium sulfate (AS) and internally mixed ammonium sulfate/fulvic acid (AS/FA) seed aerosols both show an exponential increase of effective Henry's law coefficients (KH,eff) with AS concentration (cAS, in mol kg(-1) aerosol liquid water, m = molality) and sulfate ionic strength, I(SO4(2-)) (m). A modified Setschenow plot confirmed that "salting-in" of glyoxal is responsible for the increased partitioning. The salting constant for glyoxal in AS is K(S)CHOCHO = (-0.24 ± 0.02) m(-1), and found to be independent of the presence of FA. The reversible glyoxal uptake can be described by two distinct reservoirs for monomers and higher molecular weight species filling up at characteristic time constants. These time constants are τ1 ≈ 10(2) s and τ2 ≈ 10(4) s at cAS < 12 m, and about 1-2 orders of magnitude slower at higher cAS, suggesting that glyoxal uptake is kinetically limited at high salt concentrations. PMID:23534917

  19. New equipment and new technique for measuring activity coefficients and Henry's constants at infinite dilution

    NASA Astrophysics Data System (ADS)

    Richon, Dominique

    2011-02-01

    New equipment is presented along with various experimental procedures and setups to cover a large range of applications. It represents a considerable improvement in terms of speed, accuracy, and simplicity with respect to classical gas stripping methods known as "dilutor techniques." Furthermore, range of conditions of its use is larger in terms of: temperatures (from 90 to 600 K), corrosive power, and toxicity of handled compounds. Solutes that could adsorb inside sampling valves or on the walls of transfer lines between sampling valve and GC detector are now studied easily; thanks to new design and procedure. Activity coefficients of one solute into one solvent at five temperatures, several repeatability tests included, are obtained in worst cases in less than 3 h. One accurate activity coefficient measurement (toluene in water) at one temperature can be realized in less than 2 min, after loading of the dilutor cell, instead of more than half an hour for unreliable results with previous equipment. It must be pointed out that the slope determination (slope of the logarithm of the exponential decay of solute composition in vapor phase which is in equilibrium with liquid phase) is the highest source of errors (flow rate, temperature, number of moles of solute are known with high accuracy with respect to slopes); they are now determined within few ‰ instead of up to tens of % in the most difficult cases leading to higher accuracies of measured activity coefficients, Henry's constants at infinite dilutions or solubility data. Successful comparisons with literature data and reproducibility tests are presented herein.

  20. Reinvestigation of the Henry's law constant for hydrogen peroxide with temperature and acidity variation.

    PubMed

    Huang, Daoming; Chen, Zhongming

    2010-01-01

    Hydrogen peroxide is not only an important oxidant in itself; it also serves as both sink and temporary reservoir for other important oxidants including HOx (OH and HO2) radicals and O3 in the atmosphere. Its partitioning between gas and aqueous phases in the atmosphere, usually described by its Henry's law constant (K(H)), significantly influences its role in atmospheric processes. Large discrepancies between the K(H) values reported in previous work, however, have created uncertainty for atmospheric modelers. Based on our newly developed online instrumentation, we have re-determined the temperature and acidity dependence of K(H) for hydrogen peroxide at an air pressure of (0.960 +/- 0.013) atm (1 atm = 1.01325 x 10(5) Pa). The results indicated that the temperature dependence of K(H) for hydrogen peroxide fits to the Van't Hoff equation form, expressed as lnK(H) = a/T - b, and a = -deltaH/R, where K(H) is in M/atm (M is mol/L), T is in degrees Kelvin, R is the ideal gas constant, and deltaH is the standard heat of solution. For acidity dependence, results demonstrated that the K(H) value of hydrogen peroxide appeared to have no obvious dependence on decreasing pH level (from pH 7 to pH 1). Combining the dependence of both temperature and acidity, the obtained a and b were 7024 +/- 138 and 11.97 +/- 0.48, respectively, deltaH was (58.40 +/- 1.15) kJ/(K x mol), and the uncertainties represent sigma. Our determined K(H) values for hydrogen peroxide will therefore be of great use in atmospheric models. PMID:20617734

  1. Seawater intrusion in fractured coastal aquifers: A preliminary numerical investigation using a fractured Henry problem

    NASA Astrophysics Data System (ADS)

    Sebben, Megan L.; Werner, Adrian D.; Graf, Thomas

    2015-11-01

    Despite that fractured coastal aquifers are widespread, the influence of fracture characteristics on seawater intrusion (SWI) has not been explored in previous studies. This research uses numerical modelling in a first step towards understanding the influence of fracture orientation, location and density on the extent of seawater and accompanying patterns of groundwater discharge in an idealised coastal aquifer. Specifically, aquifers containing single fractures or networks of regularly spaced fractures are studied using modified forms of the Henry SWI benchmark problem. The applicability of equivalent porous media (EPM) models for representing simple fracture networks in steady-state simulations of SWI is tested. The results indicate that the influence of fractures on SWI is likely to be mixed, ranging from enhancement to reduction in seawater extent and the width of the mixing zone. For the conceptual models considered here, vertical fractures in contact with the seawater wedge increase the width of the mixing zone, whereas vertical fractures inland of the wedge have minimal impact on the seawater distribution. Horizontal fractures in the lower part of the aquifer force the wedge seaward, whereas horizontal fractures located within the zone of freshwater discharge enhance the wedge. Inclined fractures roughly parallel to the seawater-freshwater interface increase the landward extent of seawater and fractures perpendicular to the interface inhibit the wedge. The results show that EPM models are likely inadequate for inferring salinity distributions in most of the fractured cases, although the EPM approach may be suitable for orthogonal fracture networks if fracture density is high and appropriate dispersivity values can be determined.

  2. Quantitative structure-property relationships for predicting Henry's law constant from molecular structure.

    PubMed

    Dearden, John C; Schüürmann, Gerrit

    2003-08-01

    Various models are available for the prediction of Henry's law constant (H) or the air-water partition coefficient (Kaw), its dimensionless counterpart. Incremental methods are based on structural features such as atom types, bond types, and local structural environments; other regression models employ physicochemical properties, structural descriptors such as connectivity indices, and descriptors reflecting the electronic structure. There are also methods to calculate H from the ratio of vapor pressure (p(v)) and water solubility (S(w)) that in turn can be estimated from molecular structure, and quantum chemical continuum-solvation models to predict H via the solvation-free energy (deltaG(s)). This review is confined to methods that calculate H from molecular structure without experimental information and covers more than 40 methods published in the last 26 years. For a subset of eight incremental methods and four continuum-solvation models, a comparative analysis of their prediction performance is made using a test set of 700 compounds that includes a significant number of more complex and drug-like chemical structures. The results reveal substantial differences in the application range as well as in the prediction capability, a general decrease in prediction performance with decreasing H, and surprisingly large individual prediction errors, which are particularly striking for some quantum chemical schemes. The overall best-performing method appears to be the bond contribution method as implemented in the HENRYWIN software package, yielding a predictive squared correlation coefficient (q2) of 0.87 and a standard error of 1.03 log units for the test set. PMID:12924576

  3. Dick Crane's California Days

    NASA Astrophysics Data System (ADS)

    Holbrow, Charles H.

    2011-03-01

    Horace Richard Crane (1907-2007) was born and educated in California. His childhood was full of activities that helped him become an outstanding experimental physicist. As a graduate student at the California Institute of Technology (1930-1934), he had the good fortune to work with Charles C. Lauritsen (1892-1968) just as he introduced accelerator-based nuclear physics to Caltech. They shared the euphoric excitement of opening up a new field with simple, ingenious apparatus and experiments. This work prepared Crane for his career at the University of Michigan (1935-1973) where in the 1950s, after making the first measurement of the electron's magnetic moment, he devised the g-2 technique and made the first measurement of the anomaly in the electron's magnetic moment. A man of direct, almost laconic style, he made lasting contributions to the exposition of physics to the general public and to its teaching in high schools, community colleges, four-year colleges, and universities. I tell how he became a physicist and describe some of his early achievements.

  4. Methods to recover the narrow Dicke sub-Doppler feature in evacuated wall-coated cells without restrictions on cell size

    NASA Technical Reports Server (NTRS)

    Robinson, H. G.

    1984-01-01

    The hyperfine resonance observed in evacuated wall-coated cells with dimensions lambda/2 (lambda is the hyperfine resonance wavelength) consists of a narrow Dicke sub-Doppler linewidth feature, the spike, superimposed on a broad pedestal. The hydrogen maser provides a classic example of this lineshape. As cell size is increased, an effect unique to evacuated wall-coated cells occurs. Certain combinations of microwave field distribution and cell size result in a lineshape having a pedestal with a small spike feature or only the broad pedestal with no spike. Such conditions are not appropriate for atomic frequency standard applications. The cause of the evacuated wall-coated cell lineshape is reviewed and methods to recover the narrow spike feature without restrictions on cell size is discussed. One example is a cell with dimensions having equal volumes of exposure to opposite phases of the microwave magnetic field.

  5. Femtosecond time resolved coherent anti-Stokes Raman spectroscopy of H(2)-N(2) mixtures in the Dicke regime: Experiments and modeling of velocity effects.

    PubMed

    Tran, H; Chaussard, F; Le Cong, N; Lavorel, B; Faucher, O; Joubert, P

    2009-11-01

    In this paper, we present measurements and modeling of femtosecond time resolved coherent anti-Stokes Raman spectroscopy (CARS) signal in H(2)-N(2) mixtures at low densities. Three approaches have been used to model the CARS response. The first is the usual sum of Voigt profiles. In the second approach, the speed dependent Voigt profile is used. In the last approach, a model of the temporal CARS signal is developed, which takes into account the velocity changes induced by collisions and the speed dependence of the collisional parameters. The velocity changes are modeled using the Keilson and Storer memory function; the radiator speed dependences of the collisional parameters are determined from their temperature dependences. The results obtained are consistent with previous studies in the frequency domain, showing that the changes of the velocity have important effects for the H(2)/N(2) system in the Dicke narrowing density regime. PMID:19895015

  6. The photodegradation of cadmium yellow paints in Henri Matisse's Le Bonheur de vivre (1905-1906)

    NASA Astrophysics Data System (ADS)

    Mass, Jennifer L.; Opila, Robert; Buckley, Barbara; Cotte, Marine; Church, Jonathan; Mehta, Apurva

    2013-04-01

    Evidence for the alteration of the yellow paints in Henri Matisse's Le Bonheur de vivre (1905-1906, The Barnes Foundation) has been observed since the 1990s. The changes in this iconic work of Matisse's Fauvist period include lightening, darkening, and flaking of the yellow paints. Handheld X-ray fluorescence (XRF) and multispectral imaging surveys reveal that the degradation is confined to cadmium yellow (CdS) paints. The discoloration of cadmium yellow paints in Impressionist, Post-Impressionist and early modernist work from the 1880s through the 1920s has been ascribed to the photo-oxidative degradation of CdS. Preliminary investigations of the degraded yellow paints in this work involved Cd LIII-edge X-ray Absorption Near Edge Spectroscopy (XANES) at the Stanford Synchrotron Radiation Light Source (SSRL Menlo Park, California) and Scanning Electron Microscopy-energy dispersive X-ray analysis (SEM-EDS) at the Winterthur Museum Scientific Research and Analysis Laboratory. To determine if the visual changes in the paints did in fact indicate photo-oxidative degradation and if different chemistries could be observed for the lightened versus darkened regions, synchrotron radiation-micro Fourier Transform InfraRed (SR-μFTIR) spectroscopy, X-ray Fluorescence (SR-μXRF) mapping and micro X-ray Absorption Near Edge Spectroscopy (μXANES) mapping at the Cd LIII-edge of the altered paint cross-sections were carried out at the European synchrotron radiation facility (ESRF, Grenoble, France) beamline ID-21. The goal is to elucidate the discoloration mechanisms observed in the paint using elemental and speciation mapping. The μXANES mapping and SR-FTIR imaging showed a substantial enrichment of CdCO3 in the off-white surface crust of the faded/discolored CdS paint. This suggests that the CdCO3 is present as an insoluble photodegradation product rather than solely a paint filler or starting reagent. Additionally, oxalates and sulfates were found to be concentrated at the alteration surface.

  7. Constraining emplacement geometry of large igneous dome growth: new evidence from Mt. Ellsworth, Henry Mountains, UT

    NASA Astrophysics Data System (ADS)

    Nushart, N.; Wetmore, P. H.

    2013-12-01

    Surface displacements resulting from upper-crustal intrusions are a paramount concern for communities and facilities located near active volcanic areas (e.g. Campi Flegrei, Yucca Mtn.). Study of active intrusions is limited to remote observations through geophysical/geodetic methods. While surface displacements due to intrusions can be measured easily, intrusion shapes and depths are often based on simplified assumptions (e.g. spheres and ellipsoids). These models benefit from data constraining both the geometries of the individual intrusions, and the kinematics and mechanics of deformation within the overlying strata. Mount Ellsworth, a sub-volcanic intrusion within the Henry Mtns., is an ideal natural laboratory for the study of near surface intrusions because it was emplaced into relatively flat-lying stratigraphy ~24 Ma when the stress field was largely isotropic. Previous studies of Mt. Ellsworth (i.e. Hunt, 1953; Jackson and Pollard, 1988) present competing emplacement models (e.g. single vs. multiple batch construction) based on slightly different geologic maps. Through a combination of 1:5000 scale field mapping and profile-oriented gravity study, we have produced new detailed geologic maps and cross sections of Mt. Ellsworth. These were intended to be used to test emplacement models. However, the results suggest that the initial goals set out for this study could not be realized due to the lack of exposed intrusion, the relatively small dimensions of the exposed sills, and the largely uncapped nature of the mountain. Mapping results demonstrate, however, that some of the assumptions of the models theorized by previous researchers were inappropriately applied to Mt. Ellsworth. These assumptions include the thickness and separation of stratigraphic units, the size and distribution of sills and smaller intrusions, structural attitudes of beds and sills, and the presence of exposure of the main body of the intrusion. Based on balanced cross sections constructed using our mapping and assuming a floor within the Permian White Rim Sandstone, the Mt. Ellsworth intrusion can be constraint to be ~2 km thick with laccolithic geometry, elongate in the NE-SW extending ~8 km NE-SW and ~6 km in ESE-WNW.

  8. Abraham Pais Prize for History of Physics Talk: Henry Cavendish, John Michell, Weighing the Stars

    NASA Astrophysics Data System (ADS)

    McCormmach, Russell

    2010-03-01

    This talk is about an interaction between two 18th-century natural philosophers (physical scientists), Henry Cavendish and John Michell, and its most important outcome, the experiment of weighing the world (their name for it) using a torsion balance (our name for it). Michell was the most inventive of the 18th century English natural philosophers, and Cavendish was the first of his countrymen to possess abilities at all comparable with Newton's. By their interests and skills, they were drawn to one another. Both were universal natural philosophers, equally adept at building scientific instruments, performing experiments, constructing theory, and using mathematics; both had a penchant for exacting, quantitative work. Both also had fitful habits of publication, which did not begin to reveal the range of their work, to the mystification of later scientists and historians. Late in life, Cavendish and Michell turned their attention to the force that Newton had examined most completely, a singular triumph of his natural philosophy, the force of universal gravitation. Over the course of the 18th century, abundant evidence of attraction had been gathered from the motions of the earth, moon, planets, and comets, phenomena which span the intermediate range of masses, sizes, and distances. But in three domains of experience, involving the extreme upper and lower limits of masses and dimensions, the universality of gravitation remained an article of faith. These were the gravity of the ``fixed'' stars, the mutual attraction of terrestrial bodies, and the gravitation of light and other special substances. Michell took on himself the task of deducing observable consequences from each of these prospective instances of universal gravitation. Cavendish encouraged Michell, and he followed up the resulting observational and experimental questions. The experiment of weighing the world was the last experiment Mitchell planned and the last experiment Cavendish published. The capstone of two distinguished careers, the experiment outlived the world in which it was conceived and carried out. Today gravitation is at the center of the physics of the very small and the very large, and experiments that followed in Michell and Cavendish's footsteps find a place in it. The ``most important advance in experiments on gravitation,'' to quote an authority, ``was the introduction of the torsion balance'' by Michell and Cavendish and independently by Coulomb; ``it has been the basis of all the most significant experiments on gravitation ever since.'' Another authority traces the ``noble tradition of precision measurement to which we are heirs'' to Cavendish's experiment, which he calls the ``first modern physics experiment.''

  9. Pattern Formation and Turbulence in Convection, the Legacy of Henri B'enard.

    NASA Astrophysics Data System (ADS)

    Ahlers, Guenter

    2007-11-01

    Just over a century ago a 26-year young physicist by the name of Henri B'enard handed in his Ph.D. thesis, entitled Les tourbillons cellulaires dans une nappe liquide, at the Ecole Normale Sup'erieure in Paris. In a fluid layer with a free upper surface and heated from below he observed and studied remarkably regular hexagonal patterns. Here I shall attempt to trace the developments in nonlinear physics, and especially in fluid mechanics, that have evolved from B'enard's seminal experiments. As a result of the work of many, including Lord Rayleigh, Harold Jeffries (Sir Harold), W.V.R. Malkus and G. Veronis, and especially Fritz Busse (2000 Fluid-Dynamics-Prize recipient) and his long-term collaborator Richard Clever, a remarkably detailed understanding of the nature of convection in a shallow fluid layer between two solid horizontal confining surfaces and heated from below had been gained by the early 1970's. The bifurcation to convection is stationary and occurs at a temperature difference (in dimensionless form represented by the Rayleigh number R) and a wave number k that are non-zero (Rayleigh, Jeffries). The bifurcation is supercritical to a pattern of rolls (Malkus and Veronis; Schl"uter, Lortz, and Busse). Above onset there is a finite range in the R-k plane, delimited by several interesting instabilities, over which the rolls are stable (Clever and Busse). This region, known now affectionately as the ``Busse Balloon", has been used during the last three decades to study both theoretically and experimentally numerous non-linear phenomena, including the role of thermal fluctuations near the bifurcation, the dynamics of pattern coarsening, various wave-number selection processes, spatio-temporal chaos, and spatially localized structures or ``pulses". In somewhat more recent times the range of R has been extended up to 10^14 times the critical value Rc= O(10^3) at onset and a richness of phenomena involving turbulent flows has been revealed and studied quantitatively. One of the particularly interesting issues amenable to study in this system has been the interaction between large-scale flow structures and the small-scale turbulent fluctuations; but there are many other aspects that have provided seemingly endless fascination for the researchers.

  10. Accommodating structures and deformation associated with the emplacement of high level magmatic intrusions, Henry Mountains, Utah

    NASA Astrophysics Data System (ADS)

    Wilson, P. I. R.; McCaffrey, K. J. W.; Davidson, J. P.; Holdsworth, R. E.; Murphy, P.; Jarvis, I.

    2012-04-01

    High-level sill and laccolith complexes form an important part of volcanic plumbing systems in which magma is emplaced as a series of sub-horizontal tabular sheet-like intrusions. Few studies of these intrusion types have looked in detail at the host rock, emplacement-related deformation structures, and how the additional volume of rock is accommodated within the crust, i.e. the 'space problem'. The aim of this study is to develop an understanding of the stages of emplacement and the internal textural evolution of Tertiary sills and laccoliths in the Henry Mountains. We have carried out kinematic and geometrical studies of emplacement-related structures in the host rocks. This work is supplemented by micro-scale textural and geochemical studies of plagioclase feldspar and amphibole phenocryst populations within the intrusions. Fabric studies recognise micro-structural fabrics (associated with accommodating structures) from magmatic fabrics (associated with magma flow). Crystal size distribution (CSD) studies help constrain the crystal:molten rock ratio and mechanical properties of the intruding magma, in addition to helping identify individual magma pulses. Fieldwork to date has focused on two satellite intrusions to Mt. Hilliers: Trachyte Mesa (the most distal intrusion; simple geometries); and Maiden Creek (closer to Mt. Hilliers; more complex geometries) both of which are emplaced into the Entrada Formation sandstone. Preliminary results highlight the importance of shear zones in accommodating the extra volume of magma at depth. Trachyte Mesa is an elongate (NE-SW) laccolith comprised of multiple, stacked intrusive sheets. Semi-brittle shear fabrics (Riedel shear fractures) can be identified on the top surface of the intrusion. Furthermore, sub-horizontal shear zone fabrics can also be observed adjacent to the frontal propagating tip of individual intrusive sheets, e.g. at the northwest lateral margin of Trachyte Mesa. A well-developed shear zone was also identified above the Maiden Creek intrusion. Maiden Creek is a sill with a complex elliptical shape and several finger-like lobes. Detailed outcrop studies across two neighbouring lobes have identified a sub-horizontal shear zone which may be traced from the top of each intrusive lobe. This shear zone separates low/ moderately-deformed sandstones above from highly deformed sandstones below and between the two lobes, hence acting as a detachment zone. Fabrics (stretched plagioclase phenocrysts) within the igneous rock, seen on the top surface of the intrusive lobes directly beneath this shear zone, support the timing of the shear zone being contemporaneous with emplacement of the intrusive lobes. The shear zone appears to have played a critical role in accommodating the volumetric changes associated with magma emplacement.

  11. An experimental test of Henry's Law in solid metal-liquid metal systems with implications for iron meteorites

    NASA Astrophysics Data System (ADS)

    Chabot, N. L.; Campbell, A. J.; Jones, J. H.; Humayun, M.; Agee, C. B.

    2003-02-01

    Experimental solid metal-liquid metal partition coefficients have been used to model the crystallization of magmatic iron meteorites and understand the evolution of asteroid cores. However, the majority of the partitioning experiments have been conducted with trace elements doped at levels that are orders of magnitude higher than measured in iron meteorites. Concern about Henry's Law and the unnatural doping levels have been cited as one reason that two recent iron meteorite studies have dismissed the experimental partition coefficients in their modeling. Using laser ablation ICP-MS analysis, this study reports experimentally determined solid metal-liquid metal trace element partition coefficients from runs doped down to the levels occurring in iron meteorites. The analyses for 12 trace elements (As, Co, Cr, Cu, Ga, Ge, Ir, Os, Pd, Pt, Re, and W) show no deviations from Henry's Law, and these results support decades of experimental work in which the partition coefficients were assumed to be independent of trace element concentration. Further, since our experiments are doped with natural levels of trace elements, the partitioning results are directly applicable to iron meteorites and should be used when modeling their crystallization. In contrast, our new Ag data are inconsistent with previous studies, suggesting the high Ag-content in previous studies may have influenced the measured Ag partitioning behavior.

  12. Chiral modification of copper exchanged zeolite-Y with cinchonidine and its application in the asymmetric Henry reaction.

    PubMed

    Deka, Jogesh; Satyanarayana, L; Karunakar, G V; Bhattacharyya, Pradip Kr; Bania, Kusum K

    2015-12-28

    Chirally modified Cu(2+) exchanged zeolite-Y was synthesized by direct adsorption of cinchonidine under ambient conditions. The chirally modified materials were characterized using various spectrochemical and physicochemical techniques viz. BET, FTIR, MAS ((1)H and (13)C NMR), XPS, SEM, cyclic voltammetry and PXRD. Characteristic peaks of cinchonidine observed in the supported materials confirmed the adsorption of cinchonidine and its coordination with the Cu(2+) active site on copper exchanged zeolite-Y. (13)C SSNMR and XPS analysis however confirmed for the half encapsulation process, only the quinoline ring of cinchonidine gets coordinated to the internal metal sites via the N atom while the quinuclidine moiety extends out of the host surface. Cinchonidine supported Cu(2+)-Y zeolites were found to exhibit good catalytic performance in the asymmetric Henry reaction. (1)H SSNMR studies also confirmed the protonation of the N atom of the quinuclidine ring during the course of the Henry reaction. Heterogeneous chiral catalysts were effective for up to two consecutive cycles. Leaching of cinchonidine after the second cycle was found to have a negative result in the catalytic performance. PMID:26579982

  13. Broad-Host-Range Plasmid pJB658 Can Be Used for Industrial-Level Production of a Secreted Host-Toxic Single-Chain Antibody Fragment in Escherichia coli

    PubMed Central

    Sletta, H.; Nedal, A.; Aune, T. E. V.; Hellebust, H.; Hakvåg, S.; Aune, R.; Ellingsen, T. E.; Valla, S.; Brautaset, T.

    2004-01-01

    In industrial scale recombinant protein production it is often of interest to be able to translocate the product to reduce downstream costs, and heterologous proteins may require the oxidative environment outside of the cytoplasm for correct folding. High-level expression combined with translocation to the periplasm is often toxic to the host, and expression systems that can be used to fine-tune the production levels are therefore important. We previously constructed vector pJB658, which harbors the broad-host-range RK2 minireplicon and the inducible Pm/xylS promoter system, and we here explore the potential of this unique system to manipulate the expression and translocation of a host-toxic single-chain antibody variable fragment with affinity for hapten 2-phenyloxazol-5-one (phOx) (scFv-phOx). Fine-tuning of scFv-phOx levels was achieved by varying the concentrations of inducers and the vector copy number and also different signal sequences. Our data show that periplasmic accumulation of scFv-phOx leads to cell lysis, and we demonstrate the importance of controlled and high expression rates to achieve high product yields. By optimizing such parameters we show that soluble scFv-phOx could be produced to a high volumetric yield (1.2 g/liter) in high-cell-density cultures of Escherichia coli. PMID:15574897

  14. Let us keep observing and play in sand boxes (Henry Darcy Medal Lecture)

    NASA Astrophysics Data System (ADS)

    Illangasekare, T. H.

    2012-04-01

    Henry Darcy was a civil engineer recognized for a number of technical achievements and scientific discoveries. The sand column experiments for which he is known revealed the linear relationship that exists between fluid motion and driving forces at low velocities. Freeze and Back (1983) stated, ''The experiments carried out by Darcy with the help of his assistant, Ritter, in Dijon, France in 1855 and 1856 represent the beginning of groundwater hydrology as a quantitative science." Because of the prominence given to this experiment, two important facts behind Darcy's contributions to subsurface hydrology have not received much attention. First, Darcy was not only a good engineer, but he was also a highly respected scientist whose knowledge of both the fundamentals of fluid mechanics and the natural world of geology led to better conceptualizing and quantifying of groundwater processes at relevant scales to solve practical problems. The experiments for which he is known may have already been conceived, based on his theoretical understanding, and the results were anticipated (Brown 2002). Second, Darcy, through his contributions with Dupuit, showed that they understood hydrologeology at a regional scale and developed methods for quantification at the scale of geologic stratum (Ritz and Bobek, 2008). The primary thesis of this talk is that scientific contributions such as the one Darcy made require appreciation and a thorough understanding of fundamental theory coupled with observation and recording of phenomena both in nature and in the laboratory. Along with all of the significant theoretical, mathematical modeling, and computational advances we have made in the last several decades, laboratory experiments designed to observe phenomena and processes for better insight, accurate data generation, and hypothesis development are critically important to make scientific and engineering advances to address some of the emerging and societally important problems in hydrology and water resources engineering. Kleinhans et al. (2010) convincingly argued the same point, noting, "Many major issues of hydrology are open to experimental investigation." Current and emerging problems with water supply and their hydrologic implications are associated with sustainability of water as a resource for global food production, clean water for potable use, protection of human health, and impacts and implications of global warming and climate change on water resources. This talk will address the subsurface hydrologic science issues that are central to these problems and the role laboratory experimentation can play in helping to advance the basic knowledge. Improved understanding of fundamental flow, transport, reactive, and biological processes that occur at the pore-scale and their manifestation at different modeling and observational scales will continue to advance the subsurface science. Challenges also come from the need to integrate porous media systems with bio-geochemical and atmospheric systems, requiring observing and quantifying complex phenomena across interfaces (e.g., fluid/fluid in pores to land/atmospheric in the field). This talk will discuss how carefully designed and theory driven experiments at various test scales can play a central role in providing answers to critical scientific questions and how they will help to fill knowledge gaps. It will also be shown that careful observations will lead to the refinement of existing theories or the development of new ones. Focusing on the subsurface, the need to keep observing through controlled laboratory experimentation in various test scales from small cells to large sand boxes will be emphasized. How the insights obtained from such experiments will complement modeling and field investigations are highlighted through examples.

  15. On the "Critique of Everyday Life" to "Metaphilosophy": Henri Lefebvre's Philosophical-Political Legacy of the Cultural Revolution

    ERIC Educational Resources Information Center

    Sünker, Heinz

    2014-01-01

    Henri Lefebvre (1901-91), philosopher and sociologist, is, together with Theodor W. Adorno, Max Horkheimer, Walter Benjamin and Ernst Bloch, one of the most relevant representatives of the first generation in Western Marxism. His engagement with Marxism led him to analyse everyday life in post-war France in order to decipher the possibilities of,…

  16. Fugitive from Labor Cases: Henry Garnett (1850) and Moses Honner (1860). The Constitution Community: Civil War and Reconstruction (1850-1870).

    ERIC Educational Resources Information Center

    Lawlor, John M., Jr.

    The cases of Henry Garnett and Moses Honner bookend the 1850s, a decade of intensifying political crisis that was deeply connected to the institution of slavery. In both court actions, which were tried in the Third Circuit Court, Eastern District, Philadelphia, Pennsylvania, the defendants were charged with being "fugitives from labor." Despite…

  17. A Guide to the Data Resources of the Henry A. Murray Research Center of Radcliffe College: A Center for the Study of Lives [and] Index to [the] Guide.

    ERIC Educational Resources Information Center

    Radcliffe Coll., Cambridge, MA. Henry A. Murray Research Center.

    The first of two volumes provides information about data resources available at the Henry A. Murray Research Center of Radcliffe College, a multidisciplinary research center that is a national repository for social and behavioral science data on human development and social change; topics of special concern to women are collection priorities. The…

  18. Comments on the Classic Henry and Rogers (1960) Paper on Its 50th Anniversary: Resolving the Issue of Simple versus Choice Reaction Time

    ERIC Educational Resources Information Center

    Klapp, Stuart T.

    2010-01-01

    The effect of response complexity on simple RT, first reported by Henry and Rogers (H&R), is a robust phenomenon for complexity measured by the number of chunks in a multiple-chunk response. However, there are problems with the memory drum theory H&R used to account for this result, and no fully satisfactory alternative explanation has been…

  19. A Tall Tale Retold: The Influence of the Photographs of William Henry Jackson upon the Passage of the Yellowstone Park Act of 1872.

    ERIC Educational Resources Information Center

    Bossen, Howard

    The photographs of William Henry Jackson taken during the 1871 survey of the Yellowstone region of Wyoming and Montana have often been cited as the first specific group of photographs used for successful persuasion. Many historians credit Jackson's photographs as being the most influential factor in persuading Congress to designate the Yellowstone…

  20. Artist as Educator? Assessing the Pedagogic Role of Folly in the Early Work of the Anglo-Swiss Artist Henry Fuseli (1741-1825)

    ERIC Educational Resources Information Center

    Smith, Hester Camilla

    2010-01-01

    This article examines a group of five ink, pen and wash drawings produced by the Anglo-Swiss artist Henry Fuseli in the mid-eighteenth century in Zurich. The drawings were produced for a "Narrenbuch" (Book of Fools) uniting visual images of folly with humorous slogans. The drawings are significant in that they imitate sixteenth-century print…