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1

Dicke, Robert Henry (1916-)  

NASA Astrophysics Data System (ADS)

Physicist, born in St Louis, MO, professor at Princeton (1946-84). He did not believe EINSTEIN's general theory of relativity and conducted numerous experiments to challenge its famous tests. He attempted to determine whether the Sun was oblate (squashed at the poles) and could thus cause alterations to the orbit of Mercury which had been interpreted in Einstein's favor. He re- measured the gravi...

Murdin, P.

2000-11-01

2

Henry's Gallery  

NSDL National Science Digital Library

This site showcases the work of Henry Diltz, the official photographer of the Woodstock and Monterey Pop Festivals and over 100 album covers. Although the site is designed as a commercial enterprise (many of the photos can be ordered at the site), users are free to browse this collection of over 100 photos, some with brief notes, of many of the leading Rock and Roll musicians of the 1960s and 70s. Some of the photos were taken during posed sessions or album cover shoots, but many are candids to be found nowhere else. Highlights include shots of Joni Mitchell, David Crosby, and Eric Clapton in Mama Cass's backyard; Jerry Garcia jamming at Crosby's house; and the Who at the Monterey Pop Festival with a hapless engineer trying to save his microphones from Pete Townshend's flailing guitar. Additional resources include a brief special feature on Henry's recollections of Woodstock (with photos).

Diltz, Henry.

3

Dynamics of nonequilibrium Dicke models  

NASA Astrophysics Data System (ADS)

Motivated by experiments observing self-organization of cold atoms in optical cavities, we investigate the collective dynamics of the associated nonequilibrium Dicke model. The model displays a rich semiclassical phase diagram of long-time attractors including distinct superradiant fixed points, bistable and multistable coexistence phases, and regimes of persistent oscillations. We explore the intrinsic time scales for reaching these asymptotic states and discuss the implications for finite-duration experiments. On the basis of a semiclassical analysis of the effective Dicke model, we find that sweep measurements over 200 ms may be required in order to access the asymptotic regime. We briefly comment on the corrections that may arise due to quantum fluctuations and states outside of the effective two-level Dicke model description.

Bhaseen, M. J.; Mayoh, J.; Simons, B. D.; Keeling, J.

2012-01-01

4

Determination of Henry’s constant using a photoacoustic sensor  

Microsoft Academic Search

We present a simple method for measuring Henry’s constant kHof ethanol using photoacoustic spectroscopy. At T= 298.1 K the measured value forkH is (0.877 ± 0.039)kPa · kg · mol?1. Our data show that Henry’s law is valid at ethanol molalities between 0.1mol · kg?1 and 1.4 mol · kg?1. The temperature dependence of Henry’s constant was carefully examined by

Jean-Paul Pellaux

2001-01-01

5

Catalytic asymmetric Henry reaction  

Microsoft Academic Search

The classical Henry reaction, the coupling of a nitroalkane with a carbonyl compound in the presence of a base, is an important C–C bond forming reaction in organic chemistry giving ?-nitroalcohols, which are useful synthons in organic synthesis. However, an asymmetric version of the reaction, that has been developed recently, gives a new dimension to the classical Henry reaction whereby

Joshodeep Boruwa; Naminita Gogoi; Partha Pratim Saikia; Nabin C. Barua

2006-01-01

6

John Henry: Then and Now.  

ERIC Educational Resources Information Center

|Compares three children's books retelling the legend of John Henry: "John Henry: An American Legend" by Ezra Jack Keats (1965), "John Henry" by Julius Lester (1994), and "The Legend of John Henry" by Terry Small (1994). Differences in imagery, language, symbolism, and themes are discussed. (MAK)|

Nikola-Lisa, W.

1998-01-01

7

The Henry Problem Revisited  

Microsoft Academic Search

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

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

2006-01-01

8

Comment on 'New Brans-Dicke wormholes'  

SciTech Connect

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.

Bhadra, Arunava [High Energy and Cosmic Ray Research Center, University of North Bengal, Darjeeling (W.B.) 734 430 (India); Simaciu, Ion [Department of Physics, University of 'Petrol-Gaze' Ploiesti, Ploiesti 2000 (Romania); Nandi, Kamal Kanti [Institute of Theoretical Physics, Chinese Academy of Sciences, P.O.Box 2735, Beijing 100080 (China); Department of Mathematics, University of North Bengal, Darjeeling (W.B.) 734 430 (India); Zhang Yuanzhong [CCAST (World Laboratory), P.O.Box 8730, Beijing 100080 (China); Institute of Theoretical Physics, Chinese Academy of Sciences, P.O.Box 2735, Beijing 100080 (China)

2005-06-15

9

The Apocalyptic Vision of Philip K. Dick  

Microsoft Academic Search

Interrogating the importance of the writings of Philip K. Dick for critical cultural studies and social theory, the authors provide contextual and political readings of his work. Although H. G. Wells carried through a crucial science fiction breakthrough, Philip K. Dick emerges in the reading as the poet laureate of the postmodern adventure in his bleak and frightening portrayals of

Steven Best; Douglas Kellner

2003-01-01

10

Required characteristics of Paenibacillus polymyxa JB-0501 as potential probiotic.  

PubMed

The ability of Paenibacillus polymyxa to inhibit the growth of Escherichia coli generic ATCC 25922 (Escherichia coli ATCC 25922) and to adhere to monolayers of the enterocyte-like human cell line Caco-2 was evaluated. P. polymyxa JB-0501 (P. polymyxa JB-0501), found in a livestock feed probiotic supplement, was compared to P. polymyxa reference strain ATCC 43685 and ATCC 7070 (P. polymyxa ATCC) in terms of carbohydrate utilization and resistance to lysozyme, acid, bile salts, and hydrogen peroxide. JB-0501 grew at pH 4.5 and at H2O2 concentrations less than 7.3 ?g/ml and presented a higher affinity to hexadecane and decane. Bile salts at 0.2 % inhibited the growth of all three strains. P. polymyxa JB-0501 and P. polymyxa ATCC 43865 adhered to Caco-2 cell monolayers. The percentage of cells that adhered ranged from about 0.35 to 6.5 % and was partially proportional to the number applied. Contact time (from 15 min to 1 h) had little impact on adhesion. P. polymyxa JB-0501 inhibited the growth of E. coli ATCC 25922, as proven by the diffusion tests in agar. Taken together, these results suggested that P. polymyxa JB-0501 has the potential probiotic properties to justify its consideration as a livestock feed supplement. PMID:23756568

Naghmouchi, Karim; Baah, John; Cudennec, Benoit; Drider, Djamel

2013-06-12

11

Brans-Dicke cylindrical wormholes  

SciTech Connect

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.

Eiroa, Ernesto F. [Instituto de Astronomia y Fisica del Espacio, Casilla de Correo 67, Sucursal 28, 1428, Buenos Aires (Argentina); Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellon I, 1428, Buenos Aires (Argentina); Simeone, Claudio [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellon I, 1428, Buenos Aires (Argentina); IFIBA, CONICET, Ciudad Universitaria Pabellon I, 1428, Buenos Aires (Argentina)

2010-10-15

12

Chameleon Brans-Dicke cosmology  

NASA Astrophysics Data System (ADS)

We consider a generalized Brans-Dicke model in which the scalar field has a potential function and is also allowed to couple nonminimally with the matter sector. We assume a power-law form for the potential and the coupling functions as the inputs of the model and show that acceleration of the Universe can be realized for a constrained range of exponents of the potential function. We also argue that this accelerating phase is consistent with a large and positive Brans-Dicke parameter. In our analysis, the potential plays a more important role with respect to the coupling function in the dynamics of the Universe as the latter does not contribute to any of the relations characterizing evolution of the scale factor of the Universe and the scalar field. However, we will show that the coupling function is closely related to magnitude and direction of the energy transfer between matter and the scale field. We use this fact and some thermodynamic aspects of the model to put some constraints on the coupling function. In particular, we argue that the second law of thermodynamics constrains direction of the overall energy transfer.

Bisabr, Yousef

2012-12-01

13

Cosmic acceleration and Brans-Dicke theory  

SciTech Connect

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.

Sharif, M., E-mail: msharif.math@pu.edu.pk; Waheed, S. [University of the Punjab, Department of Mathematics (Pakistan)

2012-10-15

14

Emily Dickinson's Henry James  

Microsoft Academic Search

The year after the 1878 publication of Henry James's The Europeans, Emily Dickinson refers to the novel or its author twice in her epistolary writing. This article suggests that her two evocations of James provide further insights into the poet's relationships with the recipients of the letters, Elizabeth Holland and Thomas Wentworth Higginson. Writing Holland, Dickinson deploys characters from The

Kathryn Wichelns

2011-01-01

15

Emily Dickinson's Henry James  

Microsoft Academic Search

:The year after the 1878 publication of Henry James's The Europeans, Emily Dickinson refers to the novel or its author twice in her epistolary writing. This article suggests that her two evocations of James provide further insights into the poet's relationships with the recipients of the letters, Elizabeth Holland and Thomas Wentworth Higginson. Writing Holland, Dickinson deploys characters from The

Kathryn Wichelns

2011-01-01

16

Henry James and Euphemism.  

ERIC Educational Resources Information Center

|Explores the ways in which Henry James' narrative use of euphemism in "The Golden Bowl" can offer new interpretive avenues for the novel itself, for literary texts in general, and for the teacher-critic's professional activity in the larger context of the academic institution. (RS)|

Robinson, Douglas

1991-01-01

17

Henri Dessens: The Scientist.  

National Technical Information Service (NTIS)

The report contains a brief review of some of the contributions of Henri Dessens in honor of his many contributions to the advancement of the atmospheric sciences. By collecting nuclei of all kinds on spider fibers, he was able to study condensation and d...

H. K. Weickmann

1972-01-01

18

The Henry Problem Revisited  

NASA Astrophysics Data System (ADS)

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

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

2006-12-01

19

Loop quantum Brans-Dicke cosmology  

NASA Astrophysics Data System (ADS)

The spatially flat and isotropic cosmological model of Brans-Dicke theory with coupling parameter ??-(3)/(2) is quantized by the approach of loop quantum cosmology. An interesting feature of this model is that although the Brans-Dicke scalar field is nonminimally coupled with curvature, it can still play the role of an emergent time variable. In the quantum theory, the classical differential equation which represents cosmological evolution is replaced by a quantum difference equation. The effective Hamiltonian and modified dynamical equations of loop quantum Brans-Dicke cosmology are also obtained, which lay a foundation for the phenomenological investigation to possible quantum gravity effects in cosmology. The effective equations indicate that the classical big bang singularity is again replaced by a quantum bounce in loop quantum Brans-Dicke cosmology.

Zhang, Xiangdong; Artymowski, Michal; Ma, Yongge

2013-04-01

20

Fermions in Brans-Dicke cosmology  

SciTech Connect

Using the Brans-Dicke theory of gravitation we put under investigation a hypothetical universe filled with a fermionic field (with a self-interaction potential) and a matter constituent ruled by a barotropic equation of state. It is shown that the fermionic field [in combination with the Brans-Dicke scalar field {phi}(t)] could be responsible for a final accelerated era, after an initial matter dominated period.

Samojeden, L. L.; Devecchi, F. P.; Kremer, G. M. [Departamento de Fisica, Universidade Federal do Parana, Caixa Postal 19044, 81531-990 Curitiba (Brazil)

2010-01-15

21

The Henry Ford Museum  

NSDL National Science Digital Library

Whatever oneÂs feelings may be about Henry Ford, his legacy to the American public is tremendous, and his love of American history is well-documented. Part of this legacy may be found at the Henry Ford Museum complex, which contains a number of operational units, such as Greenfield Village and the Benson Ford Research Center. For those who might be unable to make the pilgrimage to Michigan, the MuseumÂs omnibus website will help bring some of the fine edifying material into their homes. For starters, there is the ÂExplore & Learn area of the site, which contains a number of online exhibits such as a tour of the bus that carried Rosa Parks on her fateful trip in Montgomery and the ÂInnovators exhibit, which profiles such Americans as Thomas Edison and R. Buckminster Fuller.

2005-01-01

22

Nonsingular Brans-Dicke-? cosmology  

NASA Astrophysics Data System (ADS)

We discuss a Brans-Dicke model with a cosmological constant, a negative value of the w parameter, and an arbitrary (in general nonvanishing) scale factor at the big bang. The Friedmann equations for a flat universe are considered. The current observational values for Hubble constant H0 and deceleration parameter q0 play the role of initial conditions. We follow the approach of Uehara and Kim in order to solve field equations analytically. In K. Uehara and C. W. Kim [Phys. Rev. DPRVDAQ0556-2821 26, 2575 (1982)]10.1103/PhysRevD.26.2575 only positive values of w were considered; we extend the study to a complete set of possible w values. Our main result is that the scale factor (during its evolution back in time direction) may not vanish, unlike in the standard ?CDM case. In other words, the considered model demonstrates a cosmological bounce instead of the initial singularity. The famous formula , that leads to the bounce, is valid only for the dust-filled universe with p=0 and, therefore, is not adequate for the early universe hot stage when the bounce happens. So, our results are qualitative in nature and must be used to obtain initial values for the hot stage of the Universe.

Tretyakova, D. A.; Shatskiy, A. A.; Novikov, I. D.; Alexeyev, S.

2012-06-01

23

Henri Atlan's early writings.  

PubMed

The importance given to biological complexity and dynamics, the progressive giving up the notion of genetic programme, the attention paid to noise at the molecular level, are all new aspects of biological research characteristic of the post-genomic era. They are frequently mentioned as the signs of the delayed recognition of the important contributions made by Henri Atlan from the beginning of the 1970s. By focusing my study on his first major essay, l'Organisation Biologique et la Théorie de l'Information, I reach a somewhat different conclusion. Whereas Henri Atlan proposed an early criticism of the notion of genetic programme, the point of view he adopted was at odds with molecular biology. His attempt to apply the theory of information to organisms was a project already abandoned in the United States. The importance he placed to the second law of thermodynamics and his insistence on the limits of the Darwinian theory of evolution were more the sign of an attachment to past traditions of biological thought, still permeating the French community of biologists in the second half of the XXth century, than an anticipation of future developments in the post-genomic era. PMID:16359613

Morange, M

2005-12-14

24

Chamelionic generalized Brans-Dicke cosmology  

NASA Astrophysics Data System (ADS)

We discuss the late-time dynamics of a chameleonic generalized Brans-Dicke cosmology with the power law chameleonic function f ( ?) ? ? n , where n is a real parameter motivated from string theories by conjecturing that the four-dimensional Hubble parameter varies with a scale factor like ? = ?a m , where ( ?, m) are real parameters. For some critical values of m, n and the Brans-Dicke parameter, it was observed that the universe is free from the initial singularity. Both singularity-free and singular cosmological scenarios are discussed. Several cosmological tests like the physical cosmological distances and the statefinder parameters are discussed.

El-Nabulsi, R. A.

2012-02-01

25

Take a Hike with Henry.  

ERIC Educational Resources Information Center

|Presents activities and relevant Web sites associated with the picture book "Henry Hikes to Fitchburg" which is based on a passage from "Walden" by Henry David Thoreau. Includes author sites, Library of Congress sites, town profiles and histories, nature crafts, and recipes. (LRW)|

Joseph, Linda C.

2000-01-01

26

Henry Wadsworth Longfellow  

NSDL National Science Digital Library

While many writers have to wait decades, if not centuries, after their death to receive critical or commercial success, Henry Wadsworth Longfellow was lucky to achieve both during his lifetime. Born in Portland, Maine in 1807, he was a figure of national prominence by the 1850s, and a much-beloved professor at Harvard. Recently, the Maine Historical Society created this fine tribute to the man and his work. The site is divided into seven primary sections which include an extended biographical essay about his life and work, information about his family and his homes in Portland and Cambridge. Of course, any site about Longfellow would be incomplete without a generous selection of his poems, and this site has that particular detail well covered. In the Longfellow poems database, visitors can view a sortable list of his works, which can be arranged by poem title, first line, and publication date.

27

American Experience: Henry Ford  

NSDL National Science Digital Library

Henry Ford had a profound influence on America and the world in the 20th century. He was involved in a vast array of enterprises during his life, including the quest for world peace, automobile manufacturing, and even attempting to build a type of utopia in the Amazon known as "Fordlandia." This arresting documentary from PBS's American Experience series looks into his life in great detail. Visitors can watch the entire program here and also look through a range of photo galleries. The galleries include shots of workers at the Ford factory, along with videos of Ford "camping" with Thomas Edison. Perhaps the most interesting video here is one in which Ford gives dance lessons as part of his leisure time in Dearborn, Michigan.

2013-01-29

28

The œPhantasmodesty of Henry Adams  

Microsoft Academic Search

Written exclusively in the third-person by a narrator who repeatedly refers to “Henry Adams” as “passive,” “submissive,” and “a helpless victim” in relation to the “forces” in the world that form him, The Education of Henry Adams attenuates both author and subject by valuing environment over eponym. The critical literature on the text has focused primarily on the formal or

Matthew A. Taylor

2009-01-01

29

Henry Ford achieves smooth integration.  

PubMed

Henry Ford saw the value of vertical integration early in the automobile industry and applied it to health care as well when he founded a hospital in 1915 that eventually would anchor the Henry Ford Health System. Provider components include hospitals, home health agencies, nursing homes, a managed care plan, physician practices, and freestanding outpatient surgery centers. Strong governance and information systems are key to successful integration. PMID:10185334

1998-10-01

30

Henry O. Tanner  

NSDL National Science Digital Library

Henry Ossawa Tanner, 1859-1937, was a deeply religious, mystical painter, who, as an African-American, found it difficult to gain acceptance for his artwork in the United States, and lived most of his life in France. The Smithsonian American Art Museum presents this comprehensive online exhibition on Tanner's life and work, utilizing both paintings and archival materials from its collections. The Flash exhibit is divided into three sections. First, there is Biography, essentially an illustrated timeline, including photographs showing Tanner in his studio at 51 boulevard Saint-Jacques, Paris, ca. 1900, and Tanner's wife, Jesse Macauley Olssen, at the time of their marriage in 1899. Second, Work in Context, where users can first read a bit about Tanner's education and contemporaries, then view examples of Tanner's work, and try a self-test, attempting to pick out the Tanner paintings from groups of four paintings on particular themes, e.g. Nocturnes, Portraits, Shepherds. Finally there is a Gallery of all 57 Tanners held by the Smithsonian American Art Museum.

31

Xenobiotics enhance laccase activity in alkali-tolerant ?-proteobacterium JB  

PubMed Central

Various genotoxic textile dyes, xenobiotics, substrates (10 µM) and agrochemicals (100 µg/ml) were tested for enhancement of alkalophilic laccase activity in ?-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.

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

2009-01-01

32

Quantum tunneling in the adiabatic Dicke model  

SciTech Connect

The Dicke model describes N two-level atoms interacting with a single-mode bosonic field and exhibits a second-order phase transition from the normal to the superradiant phase. The energy levels are not degenerate in the normal phase but have degeneracy in the superradiant phase, where quantum tunneling occurs. By means of the Born-Oppenheimer approximation and the instanton method in quantum field theory, the tunneling splitting, inversely proportional to the tunneling rate for the adiabatic Dicke model, in the superradiant phase can be evaluated explicitly. It is shown that the tunneling splitting vanishes as exp(-N) for large N, whereas for small N it disappears as {radical}(N)/exp(N). The dependence of the tunneling splitting on the relevant parameters, especially on the atom-field coupling strength, is also discussed.

Chen Gang [Department of Physics, Shaoxing College of Arts and Sciences, Shaoxing 312000 (China); Institute of Theoretical Physics, Shanxi University, Taiyuan 030006 (China); Chen Zidong [Department of Physics, Shaoxing College of Arts and Sciences, Shaoxing 312000 (China); Liang Jiuqing [Institute of Theoretical Physics, Shanxi University, Taiyuan 030006 (China)

2007-10-15

33

Complete Genome Sequence of Leuconostoc gelidum Strain JB7, Isolated from Kimchi  

PubMed Central

A strain of Leuconostoc gelidum, designated strain JB7, was isolated from kimchi, the representative Korean traditional fermented food. Here we announce the complete genome sequence of L. gelidum strain JB7, consisting of a 1,893,499-bp circular chromosome with a G+C content of 36.68%, and provide a description of its annotation.

Jung, Ji Young; Lee, Se Hee

2012-01-01

34

Complete Genome Sequence of Leuconostoc carnosum Strain JB16, Isolated from Kimchi  

PubMed Central

Leuconostoc carnosum strain JB16 was isolated from kimchi, the traditional Korean fermented food. Here, we report the complete genome sequence of L. carnosum strain JB16, consisting of a 1,645,096-bp circular chromosome with a G+C content of 37.24% and four plasmids.

Jung, Ji Young; Lee, Se Hee

2012-01-01

35

Electrically tunable Dicke effect in a double-ring resonator  

SciTech Connect

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.

Cetin, A. E.; Muestecaplioglu, Oe. E. [Photonics Center and School of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215 (United States); Department of Physics, Koc University, Sariyer, Istanbul 34450 (Turkey) and Institute of Quantum Electronics, ETH Zurich, Zurich 8093 (Switzerland)

2010-04-15

36

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

ERIC Educational Resources Information Center

|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…

Savage, Elizabeth

2011-01-01

37

Osler and bookworms--the "Henry connection".  

PubMed Central

Insect bookworms were a little-known interest of Sir William Osler and F. P. Henry. Each man wrote an article on the subject, Osler's appearing thirteen years after that of Henry. Several unpublished communications regarding Osler's interest in bookworms are discussed. A recently-discovered 1903 inscription to Henry demonstrates Osler's early interest in bookworms and suggests that Henry may have been an important influence in generating that interest. Images

Graner, J L

1984-01-01

38

Draper, Henry (1837-82)  

NASA Astrophysics Data System (ADS)

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....

Murdin, P.

2000-11-01

39

[The Henry E. Huntington Library.  

ERIC Educational Resources Information Center

|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…

Abraham, Terry

40

Henry Giroux and the Arts  

ERIC Educational Resources Information Center

|Henry A. Giroux is well known for pushing the definitions of education. From his early forays into what has been termed the "New Sociology of Education" in the early 1980s to his more recent discussions of "public pedagogy", Giroux has methodically challenged existing orthodoxies. This essay will focus on the interdisciplinary broadening of…

Trend, David

2012-01-01

41

Einstein metrics and Brans-Dicke superfields  

SciTech Connect

It is obtained here a space conformal to the Einstein space-time, making the transition from an internal bosonic space, constructed with the Majorana constant spinors in the Majorana representation, to a bosonic ''superspace,'' through the use of Einstein vierbeins. These spaces are related to a Grassmann space constructed with the Majorana spinors referred to above, where the ''metric'' is a function of internal bosonic coordinates. The conformal function is a scale factor in the zone of gravitational radiation. A conformal function dependent on space-time coordinates can be constructed in that region when we introduce Majorana spinors which are functions of those coordinates. With this we obtain a scalar field of Brans-Dicke type. 11 refs.

Marques, S.

1988-01-01

42

Comment on the Jordan-Brands-Dicke universes  

NASA Astrophysics Data System (ADS)

It is shown that the recently obtained Jordan-Brans-Dicke solutions by Chauvet and Guzmán (1986) are either inconsistent, or only special power-law solutions derived previously by Lorenz-Petzold in various papers.

Lorenz-Petzold, D.

1987-06-01

43

Relaxing nucleosynthesis constraints on Brans-Dicke theories  

SciTech Connect

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.

De Felice, Antonio [Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH (United Kingdom); Department of Physics, Syracuse University, Syracuse, New York 13244-1130 (United States); Mangano, Gianpiero [INFN, Sezione di Napoli, and Dipartimento di Scienze Fisiche Universita di Napoli Federico II Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Naples (Italy); Serpico, Pasquale D. [Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Foehringer Ring 6, D-80805 Munich (Germany); Trodden, Mark [Department of Physics, Syracuse University, Syracuse, New York 13244-1130 (United States)

2006-11-15

44

Pharmacological, neurochemical, and behavioral profile of JB-788, a new 5-HT1A agonist.  

PubMed

A novel pyridine derivative, 8-{4-[(6-methoxy-2,3-dihydro-[1,4]dioxino[2,3-b]pyridine-3-ylmethyl)-amino]-butyl}-8-aza-spiro[4.5]decane-7,9-dione hydrochloride, termed JB-788, was designed to selectively target 5-HT(1A) receptors. In the present study, the pharmacological profile of JB-788 was characterized in vitro using radioligands binding tests and in vivo using neurochemical and behavioural experiments. JB-788 bound tightly to human 5-HT(1A) receptor expressed in human embryonic kidney 293 (HEK-293) cells with a K(i) value of 0.8 nM. Its binding affinity is in the same range as that observed for the (+/-)8-OH-DPAT, a reference 5HT(1A) agonist compound. Notably, JB-788 only bound weakly to 5-HT(1B) or 5-HT(2A) receptors and moreover the drug displayed only weak or indetectable binding to muscarinic, alpha(2), beta(1) and beta(2) adrenergic receptors, or dopaminergic D(1) receptors. JB-788 was found to display substantial binding affinity for dopaminergic D(2) receptors and, to a lesser extend to alpha(1) adrenoreceptors. JB-788 dose-dependently decreased forskolin-induced cAMP accumulation in HEK cells expressing human 5-HT(1A), thus acting as a potent 5-HT(1A) receptor agonist (E(max.) 75%, EC(50) 3.5 nM). JB-788 did not exhibit any D(2) receptor agonism but progressively inhibited the effects of quinpirole, a D(2) receptor agonist, in the cAMP accumulation test with a K(i) value of 250 nM. JB-788 induced a weak change in cAMP levels in mouse brain but, like some antipsychotics, transiently increased glycogen contents in various brain regions. Behavioral effects were investigated in mice using the elevated plus-maze. JB-788 was found to increase the time duration spent by animals in anxiogenic situations. Locomotor hyperactivity induced by methamphetamine in mouse, a model of antipsychotic activity, was dose-dependently inhibited by JB-788. Altogether, these results suggest that JB-788 displays pharmacological properties, which could be of interest in the area of anxiolytic and antipsychotic drugs. PMID:20580787

Picard, M; Morisset, S; Cloix, J F; Bizot, J C; Guerin, M; Beneteau, V; Guillaumet, G; Hevor, T K

2010-05-24

45

Using solubility and Henry`s law constant data for ketones in water  

Microsoft Academic Search

When a chemical spill occurs in water, the extent of chemical contamination is determined by the chemical`s solubility in the water. If contaminated water comes into contact with air, such as in a pond or a storage vessel, the contaminant`s emissions into the air can be determined based upon Henry`s law constant for that particular constituent. A high Henry`s law

C. L. Yaws; S. D. Sheth; M. Han

1998-01-01

46

John Henry--The Steel Driving Man  

ERIC Educational Resources Information Center

|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…

Murphy, David E.; Gulley, Laura L.

2005-01-01

47

Henry (Hank) J. Moore (1928-1998)  

NASA Astrophysics Data System (ADS)

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.

Thompson, Thomas W.

48

CLASSICAL AREAS OF PHENOMENOLOGY: Generation and classification of robust remote symmetric Dicke states  

Microsoft Academic Search

In this paper, we present an approach to generating arbitrary symmetric Dicke states with distant trapped ions and linear optics. Distant trapped ions can be prepared in the symmetric Dicke states by using two photon-number-resolving detectors and a polarization beam splitter. The atomic symmetric Dicke states are robust against decoherence, for atoms are in a metastable level. We discuss the

Yan-Wu Zhu; Ke-Lin Gao

2008-01-01

49

General class of vacuum Brans-Dicke wormholes  

SciTech Connect

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.

Lobo, Francisco S. N.; Oliveira, Miguel A. [Centro de Astronomia e Astrofisica da Universidade de Lisboa, Campo Grande, Ed. C8 1749-016 Lisboa (Portugal)

2010-03-15

50

Quantum teleportation of an arbitrary superposition of atomic Dicke states  

SciTech Connect

We propose a scheme for teleporting an arbitrary superposition of entangled Dicke states of any number of atoms (qubits) between two distant cavities. Our method relies on adiabatic passage using multi-atom dark states in each cavity, and a conditional detection of photons leaking out of both cavities. The ideal success probability of the protocol decreases polynomially in the number of atoms. The fidelity is unity for a single Dicke state, and can be optimized for the superposition by unitary postprocessing. Issues of experimental feasibility and applications to quantum informatics are discussed.

Di Tiegang; Muthukrishnan, Ashok; Zubairy, M. Suhail [Department of Physics and Institute for Quantum Studies, Texas A and M University, Texas 77843 (United States); Scully, Marlan O. [Department of Physics and Institute for Quantum Studies, Texas A and M University, Texas 77843 (United States); Departments of Chemistry and Aerospace and Mechanical Engineering, Princeton University, New Jersey 08544 (United States)

2005-06-15

51

Structure formation constraints on the Jordan-Brans-Dicke theory  

SciTech Connect

We use cosmic microwave background data from WMAP, ACBAR, VSA and CBI, and galaxy power spectrum data from 2dF, to constrain flat cosmologies based on the Jordan-Brans-Dicke theory, using a Markov chain Monte Carlo approach. Using a parametrization based on {xi}=1/4{omega}, and performing an exploration in the range ln{xi} set-membership sign [-9,3], we obtain a 95% marginalized probability bound of ln{xi}<-6.2, corresponding to a 95% marginalized probability lower bound on the Brans-Dicke parameter {omega}>120.

Acquaviva, Viviana [SISSA/ISAS, Via Beirut 4, 34014 Trieste (Italy); INFN, Sezione di Trieste, Via Valerio 2, 34127 Trieste (Italy); Astronomy Centre, University of Sussex, Brighton BN1 9QH (United Kingdom); Baccigalupi, Carlo; Perrotta, Francesca [SISSA/ISAS, Via Beirut 4, 34014 Trieste (Italy); INFN, Sezione di Trieste, Via Valerio 2, 34127 Trieste (Italy); Leach, Samuel M. [SISSA/ISAS, Via Beirut 4, 34014 Trieste (Italy); Departement de Physique Theorique, Universite de Geneve, 24 quai Ernest Ansermet, CH-1211 Geneva 4 (Switzerland); Liddle, Andrew R. [Astronomy Centre, University of Sussex, Brighton BN1 9QH (United Kingdom)

2005-05-15

52

Structure formation constraints on the Jordan-Brans-Dicke theory  

NASA Astrophysics Data System (ADS)

We use cosmic microwave background data from WMAP, ACBAR, VSA and CBI, and galaxy power spectrum data from 2dF, to constrain flat cosmologies based on the Jordan-Brans-Dicke theory, using a Markov chain Monte Carlo approach. Using a parametrization based on ?=1/4?, and performing an exploration in the range ln(??[-9,3], we obtain a 95% marginalized probability bound of ln(?<-6.2, corresponding to a 95% marginalized probability lower bound on the Brans-Dicke parameter ?>120.

Acquaviva, Viviana; Baccigalupi, Carlo; Leach, Samuel M.; Liddle, Andrew R.; Perrotta, Francesca

2005-05-01

53

Entanglement detection in the vicinity of arbitrary Dicke states.  

PubMed

Dicke states represent a class of multipartite entangled states that can be generated experimentally with many applications in quantum information. We propose a method to experimentally detect genuine multipartite entanglement in the vicinity of arbitrary Dicke states. The detection scheme can be used to experimentally quantify the entanglement depth of many-body systems and is easy to implement as it requires measurement of only three collective spin operators. The detection criterion is strong as it heralds multipartite entanglement even in cases where the state fidelity goes down exponentially with the number of qubits. PMID:22107616

Duan, L-M

2011-10-27

54

Excited-state quantum phase transitions in Dicke superradiance models  

NASA Astrophysics Data System (ADS)

We derive analytical results for various quantities related to the excited-state quantum phase transitions in a class of Dicke superradiance models in the semiclassical limit. Based on a calculation of a partition sum restricted to Dicke states, we discuss the singular behavior of the derivative of the density of states and find observables such as the mean (atomic) inversion and the boson (photon) number and its fluctuations at arbitrary energies. Criticality depends on energy and a parameter that quantifies the relative weight of rotating versus counterrotating terms, and we find a close analogy to the logarithmic and jump-type nonanalyticities known from the Lipkin-Meshkov-Glick model.

Brandes, Tobias

2013-09-01

55

Cape Cod by Henry David Thoreau.  

National Technical Information Service (NTIS)

Shows the relationship between Henry Davis Thoreau, the poet, and Cape Cod. This film is intended for groups visiting Cape Cod, and for inclusion in the park's pre-visit educational package for schoolchildren.

1994-01-01

56

HAP: Henry H. Arnold, Military Aviator.  

National Technical Information Service (NTIS)

Henry H. (Hap) Arnold championed the cause of military air power for over 40 years. This book offers a synopsis of his career and achievements from his flight training by the Wright brothers through leadership in World War II.

R. G. Davis

1997-01-01

57

Antoine-Henri Jomini: A Bibliographical Survey.  

National Technical Information Service (NTIS)

Although the writings of Antoine-Henri Jomini influenced military thought during the 19th and 20th centuris, the obscurity of their publishing history has led to misunderstandings of the development and substance of Jomini's thought. This review attempts ...

J. I. Alger

1975-01-01

58

Henry`s law constant for selected volatile organic compounds in high-boiling oils  

SciTech Connect

Absorption systems are often used to remove and recover organic vapors from process air/gas streams. A high boiling and inert liquid like silicone oil is an excellent absorbent for volatile organic compounds in air. Henry`s law constants of four different volatile organic compounds, namely, acetone, methanol, methylene chloride, and toluene between air and high-boiling oils were determined experimentally by the headspace-GC technique over a temperature range. The Henry`s law constants were fitted as a function of temperature to an equation.

Poddar, T.K.; Sirkar, K.K. [New Jersey Inst. of Tech., Newark, NJ (United States). Dept. of Chemical Engineering, Chemistry and Environmental Science

1996-11-01

59

Contaminant Monitoring Strategy for Henrys Lake, Idaho  

Microsoft Academic Search

Henrys Lake, located in southeastern Idaho, is a large, shallow lake (6,600 acres, â 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

John S. Irving; R. P. Breckenridge

1992-01-01

60

The strange case of Sir Henry Gray.  

PubMed

Sir Henry Williamson Gray was a prominent Aberdeen surgeon who took up the post of Chief of Surgery at the Royal Victoria Hospital, Montreal in 1923. In what subsequently became known as "The Sir Henry Williamson Gray Affair" in the annals of McGill University, his career was ruined and his reputation left in tatters. The authors examine the available evidence and conclude that Gray was treated unfairly. They hope they have helped restore his name and reputation. PMID:20218279

Adam, A; Hutchison, J D; Scotland, T R

2010-02-01

61

Increasing occurence of tumour cell — Tumour cell emperipolesis in the regenerating JB1 ascites tumour  

Microsoft Academic Search

During the investigation of JB-1 ascites tumour cells in recurrent growth several cases of emperipolesis were observed. Different types of emperipolesis are presented. Light microscopical serial sections, autoradiography and transmission electron microscopy indicate that the cells involved in emperipolesis are separate cells, and the authors suggest that cytophagocytosis is the initial mechanism in the development of emperipolesis.

J. Chemnitz; P. Skaaring; P. Bichel

1975-01-01

62

Paenibacillus polymyxa JB05-01-1 and its perspectives for food conservation and medical applications.  

PubMed

The aim of this study was to isolate a novel bacterial strain with strong and broad spectrum antibacterial activity from a livestock feed prebiotic supplement. A novel strain, termed Paenibacillus polymyxa JB05-01-1, was isolated using traditional microbiological methods and identified on the basis of its phenotypic and biochemical properties as well as its 16S rRNA gene sequence. This strain was able to inhibit growth of gram-negative bacteria including Escherichia coli RR1, Pseudomonas fluorescens R73, Pantoea agglomerans BC1, Butyrivibrio fibrisolvens OR85, and Fibrobacter succinogenes. The above antagonism against the aforementioned bacteria was attributed to production of an antimicrobial substance(s) termed "JB05-01-1." Its production was optimal during the stationary phase. JB05-01-1 has a molecular weight of 2.5 KDa, its mode of action is bactericidal, and the divalent cations, Ca(2+) and Mn(2+), reduced its lethality. The antibacterial activity was heat-stable and was effective at a pH range of 2-9. Enzymes like trypsin, ?-chymotrypsin, and proteinase K have abolished the antibacterial activity of JB05-01-1 indicating a proteinaceous motif. This type of naturally occurring bacteria and inhibitory substance(s) could represent an additional value in livestock feed supplements. The natural presence of antibacterial activity indicates an opportunity to decrease the addition of antibiotics. PMID:21132276

Naghmouchi, Karim; Paterson, Lyn; Forster, Bob; McAllister, Tim; Ohene-Adjei, Sam; Drider, Djamel; Teather, Ron; Baah, John

2010-12-04

63

Natural genetic transformation in the rumen bacterium Streptococcus bovis JB1  

Microsoft Academic Search

Natural transformation of Streptococcus bovis JB1 was demonstrated after development of competence in normal culture medium. Transformation efficiencies were not significantly increased when heat-inactivated horse serum was added to the medium before growth. This is the first time that a resident rumen bacterial species has been shown to be naturally transformable. Transformation allowed the acquisition of plasmids or integration of

Derry K Mercer; Claire M Melville; Karen P Scott; Harry J Flint

1999-01-01

64

Tablet PCs in engineering mathematics courses at the J.B. Speed School of Engineering  

Microsoft Academic Search

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 pertaining to the use of Tablet PCs for

Jeffrey L. Hieb; Patricia A. S. Ralston

2010-01-01

65

Degradation ofMono-,Di, andTrihalogenated Benzoic Acids byPseudomonas aeruginosa JB2  

Microsoft Academic Search

2,3-dichlorobenzoate-, 2,5-dichlorobenzoate-. Whilechlorocatechols wereoxidized bythe mutants atwild-type levels, oxidation of2-chloro- and2,3-and2,5-dichlorobenzoates wassubstantially diminished. Thesefindings suggested thatstrain JB2possessed, inaddition tothebenzoate dioxygenase, a halobenzoate dioxygenase thatwasnecessary forthedegradation ofchlorobenzoates substituted intheortho position.

W. J. HICKEYtAND; D. D. FOCHT

66

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

ERIC Educational Resources Information Center

|"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…

JOSEPHS, LOIS

67

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

ERIC Educational Resources Information Center

|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)|

Hilbert, Betsy

1986-01-01

68

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

ERIC Educational Resources Information Center

|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…

Brodie, Carolyn S.

2005-01-01

69

The quantum cosmology in the Brans-Dicke theory  

Microsoft Academic Search

In this paper, we try to establish the quantum cosmology based on the Brans-Dicke gravitational theory. The most remarkable property of it is that the scale factora(t) has a lower limit, where the cosmological wave function approaches zero.

Liao Liu; Chao-Guang Huang

1988-01-01

70

Intermediate inflation in the Jordan-Brans-Dicke theory  

NASA Astrophysics Data System (ADS)

We present an intermediate inflationary stage in a Jordan-Brans-Dicke theory. In this scenario we analyze the quantum fluctuations corresponding to adiabatic and isocurvature modes. The model is compared to that described by using the intermediate model in Einstein general relativity theory. We assess the status of this model in light of the WMAP7 data.

Cid, Antonella; del Campo, Sérgio

2012-10-01

71

Deterministic Dicke-state preparation with continuous measurement and control  

SciTech Connect

We characterize the long-time projective behavior of the stochastic master equation describing a continuous, collective spin measurement of an atomic ensemble both analytically and numerically. By adding state-based feedback, we show that it is possible to prepare highly entangled Dicke states deterministically.

Stockton, John K.; Handel, Ramon van; Mabuchi, Hideo [Norman Bridge Laboratory of Physics, M.C. 12-33, California Institute of Technology, Pasadena, California 91125 (United States)

2004-08-01

72

Rare earth element partitioning between titanite and silicate melts: Henry’s law revisited  

Microsoft Academic Search

We present detailed experimental results on the partitioning of rare earth elements (REE) between titanite and a range of different silicate melts. Our results show that Henry’s law of trace element partitioning depends on bulk composition, the available partners for heterovalent substitution, crystal composition, and melt composition. We illustrate that the partition coefficients for Sm depend very strongly on the

Stefan Prowatke; Stephan Klemme

2006-01-01

73

Using solubility and Henry`s law constant data for ketones in water  

SciTech Connect

When a chemical spill occurs in water, the extent of chemical contamination is determined by the chemical`s solubility in the water. If contaminated water comes into contact with air, such as in a pond or a storage vessel, the contaminant`s emissions into the air can be determined based upon Henry`s law constant for that particular constituent. A high Henry`s law constant value translates into a greater emissions level. The engineering design and operation of strippers to remove contaminants from water require data for both water solubility and Henry`s law constant. A new correlation developed by researchers at Lamar University provides reliable values down to very, very low concentrations for the solubility of ketones in water. The correlation is based on the boiling point temperature of the ketone and can be used for engineering studies involving health, safety and environmental considerations. Results for water solubility and Henry`s law constant are provided here for a wide variety of ketones. Representative values are about 249,000 parts per million (ppm) per weight (wt) for methyl ethyl ketone (C{sub 4}H{sub 8}O) and 360 ppm/wt for 5-nonanone (C{sub 9}H{sub 18}O).

Yaws, C.L.; Sheth, S.D.; Han, M. [Lamar Univ., Beaumont, TX (United States)

1998-02-01

74

Joseph Henry's Conception of Scientific Knowledge  

NASA Astrophysics Data System (ADS)

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.

Theerman, Paul

1997-04-01

75

Nonclassical effects in a highly nonlinear generalized homogeneous Dicke model  

NASA Astrophysics Data System (ADS)

An intensity dependent nonlinear coupling model of N two-level atoms (generalized Dicke model) interacting dispersively with a bimodal cavity field via two-photon transitions is investigated in a scenario where the rotating wave approximation is assumed. The model becomes homogeneous in the sense that the spin transition frequency is the same for all atoms and the coupling constants emerging from the collective interactions of the atomic system with the cavity field depend only on the particular radiation field mode. This allows us to represent the Dicke Hamiltonian entirely in terms of the total angular momentum J. It is assumed that, initially, the atomic system and the field are in a disentangled state where the field modes are in Glauber coherent states and the atomic system is a superposition of states |JM> (Dicke states). The model is numerically tested against simulations of normal squeezing variance of the field, squeezing factors based on the Heisenberg uncertainty principle, along with the statistical properties of the light leading to the possible production of nonclassical effects, such as degree of second-order coherence in the modes, degree of intermode correlation, as well as violation of the Cauchy-Schwartz inequality. Analytical expression of the total density operator matrix elements at t>0 shows the present nonlinear model to be strongly entangled, which is reflected in the time evolution of the linear entropy, where the superposition states are reduced to statistical mixtures. Thus, the present generalized Dicke model does not preserve the modulus of the Bloch vector. The computations, performed in the weak coupling and strong field limits, were conducted via second-order Dyson perturbative expansion of the time evolution operator matrix elements for the totality of the angular momentum states of the atomic system. The present highly nonlinear generalized Dicke model involves two-photon transitions. Quantum coherences significantly affect the dynamics of the atomic system. At t>0 the time-dependent density operator matrix becomes strongly entangled. Linear entropy shows that the superposition states turn into statistical mixtures. The present Dicke model does not preserve the modulus of the Bloch vector.

Grinberg, Horacio

2011-11-01

76

Nonclassical effects in a highly nonlinear generalized homogeneous Dicke model  

SciTech Connect

An intensity dependent nonlinear coupling model of N two-level atoms (generalized Dicke model) interacting dispersively with a bimodal cavity field via two-photon transitions is investigated in a scenario where the rotating wave approximation is assumed. The model becomes homogeneous in the sense that the spin transition frequency is the same for all atoms and the coupling constants emerging from the collective interactions of the atomic system with the cavity field depend only on the particular radiation field mode. This allows us to represent the Dicke Hamiltonian entirely in terms of the total angular momentum J. It is assumed that, initially, the atomic system and the field are in a disentangled state where the field modes are in Glauber coherent states and the atomic system is a superposition of states |JM> (Dicke states). The model is numerically tested against simulations of normal squeezing variance of the field, squeezing factors based on the Heisenberg uncertainty principle, along with the statistical properties of the light leading to the possible production of nonclassical effects, such as degree of second-order coherence in the modes, degree of intermode correlation, as well as violation of the Cauchy-Schwartz inequality. Analytical expression of the total density operator matrix elements at t>0 shows the present nonlinear model to be strongly entangled, which is reflected in the time evolution of the linear entropy, where the superposition states are reduced to statistical mixtures. Thus, the present generalized Dicke model does not preserve the modulus of the Bloch vector. The computations, performed in the weak coupling and strong field limits, were conducted via second-order Dyson perturbative expansion of the time evolution operator matrix elements for the totality of the angular momentum states of the atomic system. - Highlights: > The present highly nonlinear generalized Dicke model involves two-photon transitions. > Quantum coherences significantly affect the dynamics of the atomic system. > At t>0 the time-dependent density operator matrix becomes strongly entangled. > Linear entropy shows that the superposition states turn into statistical mixtures. > The present Dicke model does not preserve the modulus of the Bloch vector.

Grinberg, Horacio, E-mail: grinberg@df.uba.ar

2011-11-15

77

Henry James Scholar's Guide to Web Sites  

NSDL National Science Digital Library

Maintained and created by Richard Hathaway, an educator at the State University of New York at New Paltz, this site is a compendium of links and writings by and about the American writer Henry James. The site begins with a collection of electronic texts of James' works. Some of the more recent additions include short stories that James wrote specifically for The Atlantic Monthly during the 1860s. While the site cannot be searched in its entirety, a table of contents provides some assistance for those hoping to navigate its sections. The contents include such topics as Henry James conferences, Finding other etexts, The Henry James E-Journal, and an on-line discussion group. The section dealing with writings by and about James will be of great interest to scholars and students, as it includes links to study guides and musings on his great works by other noted authors and scholars.

Hathaway, Richard D.

78

Brans-Dicke theory and the Pioneer anomaly  

NASA Astrophysics Data System (ADS)

Scalar-tensor theory offers the possibility of a modification of Newtonian gravity due to the presence of a 4d scalar dilaton field. The prototypical version of such a theory, massless Brans-Dicke theory, is considered here in the Einstein frame representation. The acceleration of a test mass is obtained from the exact 4d Xanthopoulos-Zannias solutions with spherical symmetry. The deviation of this acceleration from the pure Newtonian gravitational acceleration is examined to see if it can account for the anomalous Pioneer acceleration, while satisfying solar system constraints. Theoretical considerations, along with limits inferred from Pioneer 10 data, suggest that Brans-Dicke gravity could account for no more than a small fraction of the Pioneer anomaly, so that a complete explanation of the anomaly must lie elsewhere.

Anderson, John D.; Morris, J. R.

2012-09-01

79

Scheme for teleporting an arbitrary superposition of atomic Dicke states via multi-fold coincidence detection  

NASA Astrophysics Data System (ADS)

We propose a novel scheme for teleporting an arbitrary superposition of two-atom Dicke states with atoms trapped in optical cavities. The scheme requires a multi-fold coincidence detection and is insensitive to the imperfection of the photon detectors, and the fidelity is unity for any superposition of Dicke states. Further, we also point out that scheme can be extended to teleport an arbitrary superposition of N-atom Dicke states with unit fidelity.

Zou, Xu Bo; Shu, Jing; Guo, Guang Can

2006-10-01

80

The tumorigenic characteristics of Lime-Piper betel quid-transformed JB6 cells  

Microsoft Academic Search

Betel quid chewing is a general oral habit in Taiwan, India, southeastern Asian and South Africa with or without the additive of tobacco, alcohol or lime. In this study, the tumor-promoting neoplastic transformation effect of Lime-Piper betel quid (LPB) was examined on JB6 cells. The treatment of LPB at a high dose (1.0 mg\\/ml) for over 5 days or at lower doses

Ming-Hsun Lin; Chau-Jong Wang; Hui-Pei Huang; Ming-Yung Chou; Fen-Pi Chou

2004-01-01

81

Paenibacillus polymyxa JB05-01-1 and its perspectives for food conservation and medical applications  

Microsoft Academic Search

The aim of this study was to isolate a novel bacterial strain with strong and broad spectrum antibacterial activity from a\\u000a livestock feed prebiotic supplement. A novel strain, termed Paenibacillus polymyxa JB05-01-1, was isolated using traditional microbiological methods and identified on the basis of its phenotypic and biochemical\\u000a properties as well as its 16S rRNA gene sequence. This strain was

Karim Naghmouchi; Lyn Paterson; Bob Forster; Tim McAllister; Sam Ohene-Adjei; Djamel Drider; Ron Teather; John Baah

2011-01-01

82

Characterization of alkaline thermostable keratinolytic protease from thermoalkalophilic Bacillus halodurans JB 99 exhibiting dehairing activity  

Microsoft Academic Search

A thermostable alkaline protease produced from Bacillus sp. JB 99 exhibited significant keratinolytic and dehairing activity. The enzyme was purified by ammonium sulphate precipitation followed by CM-cellulose and Sephadex G-100 chromatography and resulted in 13.6 fold purification with 23.8% of recovery. The specific activity of purified enzyme was 2989.6Umg?l. Purified protease had a molecular weight of 29kDa and appeared as

D. Shrinivas; G. R. Naik

2011-01-01

83

Apoptosis induced by cadmium selenide quantum dots in JB6 cells.  

PubMed

Quantum dots are being widely used in physics and in the biomedical industry in recent years due to their excellent optical characteristics. However, studies have shown that cadmium selenide core-shell quantum dots exhibit cytotoxicity. The present study investigates the induction of apoptosis and the signal pathways involved in this process by cadmium selenide-core quantum dots in JB6 cells. We found that cadmium selenide-core quantum dots exhibited high cytotoxicity and caused apoptosis and necrosis of JB6 cells. Cell cycle detection showed an increase in the percentage of G1 phase cells but a decrease in the percentage of S and G2 phase cells after JB6 cells treated with various concentrations of cadmium selenide core-shell quantum dots for 24 h. At the same time, western-blot analysis showed an activation of pro-apoptotic factors including FAS, BAX and BID. Apoptosis-inducing factor (AIF), full length and cleaved caspase-6 and -8 were up-regulated. The current study provides a guide for the safe use of QDs as a new kind of biological fluorescence material for biological and medical applications. PMID:23421204

Kong, Lu; Zhang, Ting; Tang, Meng; Pu, Yuepu

2012-11-01

84

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

ERIC Educational Resources Information Center

|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)|

Champion, Larry S.

1978-01-01

85

Lou Henry Hoover and the Girl Scouts: A Tribute.  

ERIC Educational Resources Information Center

|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…

McMullin, Dare Stark

86

‘Once more unto the breach’: Katherine's Victory in Henry V  

Microsoft Academic Search

Needing to marry someone who can legitimate his aspiration for a foreign throne, Henry aligns himself with Katharine Valois, French princess, integral political figure, and emerging bilinguist, who provides Henry with the legitimacy his claim is heretofore without. This article interrogates Katharine's role in allaying Henry's anxiety of creating rightfulness--both with the power she possesses as a member of and

Corinne S. Abate

2001-01-01

87

Henry Ward Beecher: A Nation's Tribune.  

ERIC Educational Resources Information Center

|Henry Ward Beecher was America's most prominent 19th century liberal preacher and a major spokesperson for New England Transcendentalism. His philosophy integrated four fundamental themes: the creation of a moral code based on the internalization of values and peer group pressures, the establishment of the reform ideal of the impartial…

Chandler, Daniel Ross

88

Transcendentalism and Henry Barnard's "School Architecture"  

ERIC Educational Resources Information Center

|Sketches the intellectual and sociological climate that led Henry Barnard to advocate Greek Revival architecture for school buildings, takes a look at why this style and its implicit values were popular in the era between 1820-1860, and examines a few of the plans in Barnard's "School Architecture" (1838-48). (Author/RK)|

Rothfork, John

1977-01-01

89

Henri Fayol and Zero Tolerance Policies  

Microsoft Academic Search

Zero tolerance policies have been increasingly popular in both education and business. Henri Fayol was the one of the earliest and influential thinkers in modern management theory. He defined management as a body of knowledge and defined his 14 administrative principles. It is an interesting exercise to apply Fayol’s teachings to the theory of zero tolerance and attempt to determine

Lee SCHIMMOELLER

2012-01-01

90

Henri Matisse's "Beasts of the Sea"  

ERIC Educational Resources Information Center

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…

Graff, Robert

2010-01-01

91

Bernard Shaw's Henry Higgins: A Classic Aspergen  

Microsoft Academic Search

THE CHARACTER Henry Higgins in Bernard Shaw's Pygmalion (1912) has presented directors and audiences with a dilemma. Shaw insisted that Higgins was not a romantic leading man, one with whom any romantic attachment with Eliza Doolittle was absurd. He described Higgins in a cable to Sally Luther1 as a \\

Rodelle Weintraub

2006-01-01

92

Henry Lyons, Former Lecturer, Chemistry, Kevin Street  

Microsoft Academic Search

Henry Lyons is a native of Kerry, where he gained his early education at Tarbert Comprehensive School. He was awarded a scholarship to study for a Chemistry degree in UCD, from where he graduated in 1967. He taught parttime at Kevin Street and at Ringsend for some time, while also doing full-time research for his Master’s degree. In 1972 he

Henry Lyons

2010-01-01

93

Henri Poincare and Einstein's Theory of Relativity  

Microsoft Academic Search

Contrary to the opinion of some who have written on the history of relativity, the author argues that Henri Poincaré did not anticipate Einstein's special theory of relativity; but rather, that Poincaré was intent on an entirely different program-the perfection of the Lorentz theory of electrons. It is also suggested that Poincaré was not consistent in his use of the

Stanley Goldberg

1967-01-01

94

The Ideas of Henry Jenkins and Libraries  

ERIC Educational Resources Information Center

|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…

Anderson, Byron

2008-01-01

95

Henry Ward Beecher: A Nation's Tribune.  

ERIC Educational Resources Information Center

Henry Ward Beecher was America's most prominent 19th century liberal preacher and a major spokesperson for New England Transcendentalism. His philosophy integrated four fundamental themes: the creation of a moral code based on the internalization of values and peer group pressures, the establishment of the reform ideal of the impartial nonpartisan…

Chandler, Daniel Ross

96

In the Style of Henry Moore  

ERIC Educational Resources Information Center

|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…

Hinshaw, Craig

2010-01-01

97

David Henry Goodsall: reassessment of the rule.  

PubMed

The life and times of the coloproctologist David Henry Goodsall (1843-1906) is presented outlining his contribution to surgery in general and to the field of colorectal surgery, in particular giving a reassessment of his well-known rule regarding anal fistulae. PMID:19626415

Zbar, A P

2009-07-21

98

Sir Henry Howorth and ``Geology in Nubibus''  

Microsoft Academic Search

SIR HENRY HOWORTH, in his reply to Dr. Wallace and Mr. LaTouche, concerning the excavating power of ice, remarks that he is ``speaking to every man of science, geologist or otherwise.'' Indeed, from the tone of his letter he would appear to be defending modern science against the attacks of certain unscientific persons who hold extreme views on glacial questions.

R. M. Deeley

1893-01-01

99

Appreciating Gantos' Jack Henry as an Archetype.  

ERIC Educational Resources Information Center

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)

Watson, Jinx Stapleton

2001-01-01

100

Henry Dyer: Engineer and Educational Innovator.  

ERIC Educational Resources Information Center

|Describes the life and contributions of Scottish engineer Henry Dyer to educational developments in Japan and Scotland around the turn of the century. Relates his success in founding the Imperial College of Technology, Tokyo (Japan), and the lessons he brought back to Scotland after that experience. (DSK)|

Allsobrook, David; Mitchell, Gordon

1997-01-01

101

Henri Matisse's "Beasts of the Sea"  

ERIC Educational Resources Information Center

|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…

Graff, Robert

2010-01-01

102

Henry James on the Art of Acting.  

ERIC Educational Resources Information Center

|Henry James, the nineteenth-century American novelist, also served on occasion as a theatre critic. Between 1875 and 1890 he reviewed several productions in Boston, New York, London, and Paris for "Atlantic Monthly" and other periodicals. The reviews are of interest because of James' high standards regarding acting and his often devasting…

Thompson, David W.

103

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

NASA Astrophysics Data System (ADS)

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 c

Pier, Jeffrey R.; Mason, Brian

2005-12-01

104

Contaminant Monitoring Strategy for Henrys Lake, Idaho  

SciTech Connect

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.

John S. Irving; R. P. Breckenridge

1992-12-01

105

Promotion-resistant JB6 mouse epidermal cells exhibit defects in phosphatidylethanolamine synthesis and phorbol ester-induced phosphatidylcholine hydrolysis.  

PubMed Central

The tumour-promotion-sensitive (P+) and -resistant (P-) variants of mouse JB6 epidermis-derived cells have often been used to study the requirements for the tumour-promoting effect of PMA. As part of an effort to identify the defect(s) in JB6 P- cells that might prevent the promoting effect of PMA, stimulation of phospholipase D (PLD)-mediated hydrolysis of phosphatidylcholine (PtdCho) and phosphatidylethanolamine (PtdEtn) by PMA as well as the rate of phospholipid synthesis were compared in three P+ variants, two P- variants and a transformed variant of the JB6 cell line. PMA (5-100 nM) had significantly less stimulatory effect on PtdCho hydrolysis in P- cells than in P+ or transformed JB6 cells. The effects of PMA on PtdEtn hydrolysis in the P+ and P- cell lines were similar, whereas in transformed cells PMA had slightly less effect. Each JB6 cell line was found to contain similar amounts of PtdCho. In contrast, P- cells contained significantly less PtdEtn and a correspondingly higher level of ethanolamine phosphate compared with P+ and transformed cells. P- cells also secreted ethanolamine phosphate into the medium; this process was greatly enhanced by PMA. In the two P- variants the synthesis of PtdEtn from [14C]ethanolamine was reduced to various extents, whereas the rate of PtdCho synthesis was comparable in each JB6 cell line. The synthesis of PtdCho, but not PtdEtn, was greatly stimulated by PMA in both the P+ and P- clones. The results indicate that decreased synthesis/level of PtdEtn and suboptimal functioning of a PtdCho-specific PLD are common characteristics of the P- JB6 cells examined so far. The observed alterations in phospholipid metabolism may play a role in the resistance of P- cells to the tumour-promoting action of PMA.

Kiss, Z; Guyer, B; Dong, Z

1997-01-01

106

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

SciTech Connect

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.

Buckner, M.R.

2001-08-09

107

Dicke Narrowing Effect for r-v-type Collisional Potential  

NASA Astrophysics Data System (ADS)

In this paper we present results of spectral profile shape calculations for the r-v-type collisional potential. The attention is drown to the Dicke narrowing, however we also refer to the speed-dependent effects. Our considerations were performed within the impact approximation. It was also assumed that dephasing and velocity-changing contributions to the collisions are statistically independent. We found that changing the potential type the collisional effects influence on the line shapes can vary by more then 10%. Therefore it is relevant not only for the ultraaccurate spectroscopy, where model accuracy up to 10-6 is required, but also in more common applications.

Wcis?o, Piotr; Ciury?o, Roman

2012-12-01

108

Critical property of the geometric phase in the Dicke model  

SciTech Connect

We obtain the ground-state energy level and associated geometric phase in the Dicke model analytically by means of the Holstein-Primakoff transformation and the boson expansion approach in the thermodynamic limit. The nonadiabatic geometric phase induced by the photon field is derived with the time-dependent unitary transformation. It is shown that the quantum phase transition characterized by the nonanalyticity of the geometric phase is remarkably of the first order. We also investigate the scaling behavior of the geometric phase at the critical point, which can be measured in a practical experiment to detect the quantum phase transition.

Chen Gang [Institute of Nonlinear Physics, Zhejiang Normal University, Jinhua 321004 (China); Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006 (China); Li Juqi; Liang, J.-Q. [Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006 (China)

2006-11-15

109

The limits of pity in Bartleby and Moby Dick.  

PubMed

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

Rosenblatt, L

2008-12-01

110

Exploring Symmetry Breaking at the Dicke Quantum Phase Transition  

SciTech Connect

We study symmetry breaking at the Dicke quantum phase transition by coupling a motional degree of freedom of a Bose-Einstein condensate to the field of an optical cavity. Using an optical heterodyne detection scheme, we observe symmetry breaking in real time and distinguish the two superradiant phases. We explore the process of symmetry breaking in the presence of a small symmetry-breaking field and study its dependence on the rate at which the critical point is crossed. Coherent switching between the two ordered phases is demonstrated.

Baumann, K.; Mottl, R.; Brennecke, F.; Esslinger, T. [Institute for Quantum Electronics, ETH Zuerich, 8093 Zuerich (Switzerland)

2011-09-30

111

Evolution of the Cape Henry front  

Microsoft Academic Search

The evolution of a front that forms inshore of the main Chesapeake Bay plume, near Cape Henry, Virginia, United States, was\\u000a observed during a period of downwelling-favorable winds in May 1999. A novel aspect of this study was the use of an underway,\\u000a horizontally-oriented acoustic Doppler current profiler (ADCP) to map the front and to study its evolving shape. Measurements

G. O. Marmorino; C. L. Trump

2004-01-01

112

Mathematical Modelling — a Conversation with Henry Pollak  

Microsoft Academic Search

Henry Pollak is, without any doubt, one of the pioneers in the field of applications and modelling in mathematics education.\\u000a As early as in the sixties of the last century he pleaded for an integration of applications and modelling into mathematics\\u000a teaching (for instance, Pollak, 1969). He was able to do that particularly competently and credibly since he was not

Henry Pollak

113

Immunomodulatory activities and subacute toxicity of a novel ?-glucan from Paenibacillus polymyxa JB115 in rats.  

PubMed

Subacute toxicity and immunopharmacological activities of ?-glucan from P. polymyxa JB115 was evaluated in a 28-day feeding study in rats. The white blood cell count, red blood cell count, hematocrit, hemoglobin, thrombocytes (THR) and thrombocytocrit were significantly higher in male fed with ?-glucan than control rats and the insignificant lower eosinophil count, mean corpuscular volume, mean cell hemoglobin and uninfected THR (uTHR) levels were observed in male whereas no marked changes in female rats. No other significant differences in serum chemistry and liver, kidney, and spleen weights were observed. The pathological changes and other abnormal indicators were not detected in urine. Female rats fed with diet supplemented with 0.01% ?-glucan also showed marked increase in the percentage of blood cytotoxic T-lymphocytes compared to that of the control group while not significant differences in the percentage of blood B-lymphocytes. No adverse effects on general condition and behavior, growth, feed and water consumption and feed conversion efficiency were found. The results suggest that consumption of the novel ?-1, 3/1, 6-glucan from P. polymyxa JB115 was not associated with any obvious toxic effects in rats, indicating its safety as a potential immunostimulant or as an adjuvant of some animal vaccines. PMID:20500124

Chang, Zhi-Qiang; Reza, Md Ahsanur; Lee, Joong-Su; Gebru, Elias; Jang, Seung-Hee; Choi, Myung-Jin; Lee, Seung-Jin; Damte, Dereje; Kim, Jong-Choon; Park, Seung-Chun

2010-05-26

114

Transfer of the Pea Symbiotic Plasmid pJB5JI in Nonsterile Soil †  

PubMed Central

Transfer of the pea (Pisum sativum L.) symbiotic plasmid pJB5JI between strains of rhizobia was examined in sterile and nonsterile silt loam soil. Sinorhizobium fredii USDA 201 and HH003 were used as plasmid donors, and symbiotic plasmid-cured Rhizobium leguminosarum 6015 was used as the recipient. The plasmid was carried but not expressed in S. fredii strains, whereas transfer of the plasmid to R. leguminosarum 6015 rendered the recipient capable of nodulating pea plants. Confirmation of plasmid transfer was obtained by acquisition of plasmid-encoded antibiotic resistance genes, nodulation of pea plants, and plasmid profiles. Plasmid transfer in nonsterile soil occurred at frequencies of up to 10?4 per recipient and appeared to be highest at soil temperatures and soil moisture levels optimal for rhizobial growth. Conjugation frequencies were usually higher in sterile soil than in nonsterile soil. In nonsterile soil, transconjugants were recovered only with strain USDA 201 as the plasmid donor. Increasing the inoculum levels of donor and recipient strains up to 109 cells g of soil?1 increased the number of transconjugants; peak plasmid transfer frequencies, however, were found at the lower inoculum level of 107 cells g of soil?1. Plasmid transfer frequencies were raised in the presence of the pea rhizosphere or by additions of plant material. Transconjugants formed by the USDA 201(pJB5JI) × 6015 mating in soil formed effective nodules on peas. Images

Kinkle, Brian K.; Schmidt, Edwin L.

1991-01-01

115

Dicke–Hepp–Lieb superradiant phase transition and independent modes model in quantum optomechanics  

NASA Astrophysics Data System (ADS)

We show that in the strong coupling linear regime, the dispersive opto-mechanical Hamiltonian system can undergo a Dicke-Hepp-Lieb superradiant phase transition with two critical points. The higher critical point is the usual second order Dicke superradiant phase transition while the lower critical point is a new effect showing similarity to the usual Dicke superradiance. We also show that the mechanical mode near its quantum ground state completely decouples from the optical mode and the optical mode shows similarity to the Bogoluibov like excitations.

Bhattacherjee, Aranya B.

2013-11-01

116

New black hole solutions in Brans-Dicke theory of gravity  

NASA Astrophysics Data System (ADS)

An existence check of nontrivial, stationary axisymmetric black hole solutions in the Brans-Dicke theory of gravity in different directions from those of Penrose, Thorne and Dykla, and Hawking is performed. Namely, working directly with the known explicit spacetime solutions in Brans-Dicke theory, it is found that nontrivial Kerr-Newman-type black hole solutions different from general relativistic solutions could occur for the generic Brans-Dicke parameter values -5/2<=?<-3/2. Finally, issues such as whether these new black holes carry scalar hair and can really arise in nature, and if they can, what the associated physical implications would be, are discussed carefully.

Kim, Hongsu

1999-07-01

117

Black Holes in Brans-Dicke Gravity:. a Possible Constituent of Cold Dark Matter?  

NASA Astrophysics Data System (ADS)

Existence check of non-trivial, stationary axisymmetric black hole solutions in Brans-Dicke theory of gravity in different direction from those of Penrose, Thorne and Dykla, and Hawking is performed. Namely, working directly with the known explicit spacetime solutions in Brans-Dicke theory, it is found that non-trivial Kerr-Newman-type black hole solutions different from general relativistic solutions could occur for the generic Brans-Dicke parameter values -5/2 ? ? < -3/2. Finally, issues like whether these new black holes carry scalar hair and can really arise in nature and if they can, what the associated physical implications would be are discussed carefully.

Kim, Hongsu

2002-09-01

118

Generation of Dicke states with phonon-mediated multilevel stimulated Raman adiabatic passage.  

PubMed

We generate half-excited symmetric Dicke states of two and four ions. We use multilevel stimulated Raman adiabatic passage whose intermediate states are phonon Fock states. This process corresponds to the spin squeezing operation and half-excited Dicke states are generated during multilevel stimulated Raman adiabatic passage. This method does not require local access for each ion or the preparation of phonon Fock states. Furthermore, it is robust since it is an adiabatic process. We evaluate the Dicke state using a witness operator and determine the upper and lower bounds of the fidelity without using full quantum tomography. PMID:23368543

Noguchi, Atsushi; Toyoda, Kenji; Urabe, Shinji

2012-12-27

119

The exact solution of generalized Dicke models via Susskind-Glogower operators  

NASA Astrophysics Data System (ADS)

We show a right unitary transformation approach based on Susskind-Glogower operators that diagonalizes a generalized Dicke Hamiltonian in the field basis and delivers a tridiagonal Hamiltonian in the Dicke basis. This tridiagonal Hamiltonian is diagonalized by a set of orthogonal polynomials satisfying a three-term recurrence relation. Our result is used to deliver a closed form, analytic time evolution for the case of a Jaynes-Cummings-Kerr model and to study the time evolution of the population inversion, reduced field entropy and Husimi’s Q-function of the field for ensembles of interacting two-level systems under a Dicke-Kerr model.

Rodríguez-Lara, B. M.; Moya-Cessa, H. M.

2013-03-01

120

WALDEN: About Henry David Thoreau Mailing List  

NSDL National Science Digital Library

WALDEN is a mailing list dedicated to Henry David Thoreau. It is named after his best known work, Walden, a recounting of a period of time he spent living "deliberately" next to Walden Pond, outside Concord, Massachusetts. The list will discuss: the relevance of Thoreau's ideas to life in the 21st century; books about Thoreau's life and works; other authors that were Thoreau's 19th century contemporaries; and "living deliberately," among other topics. Subscription and further information is available at the above URL.

121

Henry Crew, a successful teacher of physics  

NASA Astrophysics Data System (ADS)

Henry Crew had a long career in teaching physics at Johns Hopkins University, Haverford College, and Northwestern University. In those decades, Crew made great contributions to physics education. He published 13 books including popular textbooks and well-known translations. His 123 scientific articles included works on spectroscopy, physics education, history of science, biographies of physics, and so forth. He was awarded the highest honor for a physics teacher in the United States-the Oersted Medal. At the same time, he was an active scientist, and he participated as a founder of such academic societies as the American Physical Society, the American Association of University Professors, and the History of Science Society.

Qiaozhen, Xu; Michaelson, Robert C.

1987-09-01

122

Homage to Henry Beecher (1904-1976).  

PubMed

The writings of Henry Beecher (1904-1976) have had an enormous influence on thinking and practice with respect to the ethics of medicine and clinical research. This essay examines the seminal contributions of Beecher as illustrated by four landmark articles concerning the ethics of clinical research, the placebo effect and placebo-controlled trials, the evaluation of invasive procedures, and "brain death" and vital organ transplantation. To appreciate Beecher's legacy, it is salutary to explicate the significance of his enduring contributions and to critically evaluate their limitations. PMID:22643759

Miller, Franklin G

2012-01-01

123

John Carlos Rowe - Henry James and the United States - The Henry James Review 27:3  

Microsoft Academic Search

Henry James's decision to become a British citizen in 1915, thereby losing his U.S. citizenship, has been discussed often as part of his biography, but it has larger significance in relation to recent discussions of cosmopolitanism. Although he lived in the era of the nation state, James wrote positively about transnational characters and experiences, anticipating recent efforts by intellectuals and

John Carlos Rowe

124

Numerical simulations of tungsten melt layer erosion caused by J×B force at TEXTOR  

NASA Astrophysics Data System (ADS)

Tungsten, in the form of a macrobrush, is seen as one of the candidate materials for the ITER divertor. The melting of tungsten, melt motion and melt splashing are expected to be the main mechanisms of surface damage, which determines the lifetime of plasma-facing components. Experiments with long-time plasma action at the metallic surface in a strong magnetic field demonstrate that the J×B force generated by thermo-emission electrons dominates in the acceleration of the melt layer and leads to high target damage. In this paper, numerical simulations of tungsten target damage caused by the long-time plasma heat loads supporting the TEXTOR experiments are performed by the MEMOS code. The calculated tungsten target damage is in good agreement with the target damage observed in the TEXTOR experiments, which allows projections of surface damage to be made at ITER and DEMO conditions.

Bazylev, B.; Igitkhanov, Yu; Coenen, J. W.; Philipps, V.; Ueda, Y.

2011-12-01

125

An Analytical Method to Determine Henry’s Law Constant For Selected Volatile Organic Compounds At Concentrations And Temperatures Corresponding To Tap Water Use  

Microsoft Academic Search

Henry’s law constants (H) are needed to model human exposure to Volatile Organic Compounds (VOCs) in Indoor air resulting from the use of tap water. This paper presents an experimental method to determine Hs for several common tap water pollutants at concentrations and temperatures used in household water. For 5 VOCs Henry’s law constants were obtained simultaneously over the 25°

Marie V. Tancréde; Yukio Yanagisawa

1990-01-01

126

Decoherence, entanglement, and chaos in the Dicke model  

SciTech Connect

The dynamical properties of quantum entanglement in the Dicke model without rotating-wave approximation are investigated in terms of the reduced-density linear entropy. The characteristic time of decoherence process in the early-time evolution is numerically obtained and it is shown that the characteristic time decreases as the coupling parameter increases. The mean entanglement, which is defined to be averaged over time, is employed to describe the influences of both quantum phase transition and corresponding classical chaos on the behavior of entanglement. For a given energy, initial conditions are taken to be minimum uncertainty wave packets centered at regular and chaotic regions of the classical phase space. It is shown that the entanglement has a distinct change at the quantum phase transition, and that the entanglement for regular initial conditions is smaller than that for chaotic ones in the case of weak coupling, while it fluctuates with small amplitude in strong coupling and for chaotic initial conditions.

Hou Xiwen [Department of Physics and Centre for Nonlinear Studies, Hong Kong Baptist University, Hong Kong (China); Department of Physics, Huazhong Normal University, Wuhan 430079 (China); Hu Bambi [Department of Physics and Centre for Nonlinear Studies, Hong Kong Baptist University, Hong Kong (China); Department of Physics, University of Houston, Houston, Texas 77204 (United States)

2004-04-01

127

Dynamics of Brans-Dicke cosmology with varying mass fermions  

SciTech Connect

In this paper, the cosmological dynamics of Brans-Dicke (BD) theory in which there are fermions with a coupling to BD scalar field as well as a self-interaction potential is investigated. The conditions that there exists a solution which is stable and represents a late-time accelerated expansion of the Universe are found. The variable mass of fermions cannot vanish exactly during the evolution of the Universe once it exists initially. It is shown that the late-time acceleration depends completely on the self-interaction of the fermion field if our investigation is restricted to the theory with positive BD parameter {omega}. Provided a negative {omega} is allowed, there will be another two classes of stable solutions describing the late-time accelerated expansion of the Universe.

Liu Daojun [Center for Astrophysics, Shanghai Normal University, 100 Guilin Road, Shanghai 200234 (China)

2010-09-15

128

The Dicke Quantum Phase Transition in a Superfluid Gas Coupled to an Optical Cavity  

NASA Astrophysics Data System (ADS)

A fundamental approach to collective matter-light interaction is given by the Dicke model which has been predicted to show an intriguing quantum phase transition. We have realized the Dicke quantum phase transition in an open system formed by a Bose-Einstein condensate coupled to an optical cavity, and observed the emergence of a self-organized supersolid phase [1]. The phase transition is driven by infinitely long-ranged interactions between the condensed atoms. We show that the phase transition is described by the Dicke Hamiltonian, including counter-rotating coupling terms, and that the supersolid phase is associated with a spontaneously broken spatial symmetry. The boundary of the phase transition is mapped out in quantitative agreement with the Dicke model. [4pt] [1] K. Baumann, C. Guerlin, F. Brennecke, T. Esslinger, arXiv 0912.2361, 2009

Guerlin, Christine; Baumann, Kristian; Brennecke, Ferdinand; Esslinger, Tilman

2010-03-01

129

Cosmic string configuration in a five dimensional Brans-Dicke theory  

SciTech Connect

We consider a scalar field interacting with a cosmic string configuration. The origin of the scalar field is given by a compactification mechanism in the context of a five-dimensional Brans-Dicke theory. We analyze the behavior of a charged cosmic string given by the Maxwell-Chern-Simons term on the 3-brane. The Cosmic Microwave Background Radiation constraint is used to analyze the possibility of optical activity effect in connection with the Brans-Dicke parameter {omega}. We show that the dilatons produced by a cosmic string can decay into gauge bosons with masses given by the compactification modes. The Brans-Dicke parameter {omega} imposes stringent constraints on the mass of the dilaton and help us to understand the energy scales. In this scenario the lifetime of the dilaton which decays into light gauge bosons as well as the dependence of this phenomenon with the Brans-Dicke parameter are estimated.

Bezerra, V. B. [Departamento de Fisica, Universidade Federal da Paraiba, 58059-970, Joao Pessoa, PB (Brazil); Ferreira, C. N. [Nucleo de Estudos em Fisica, Instituto Federal de Educacao, Ciencia e Tecnologia Fluminense, 28030-130, Campos dos Goytacazes, RJ (Brazil); Marques, G. de A [Unidade Academica de Fisica, Universidade Federal de Campina Grande, 58109-790, Campina Grande, PB (Brazil)

2010-01-15

130

Motional frequency shifts of trapped ions in the Lamb-Dicke regime  

SciTech Connect

First order Doppler effects are usually ignored in laser driven trapped ions when the recoil frequency is much smaller than the trapping frequency (Lamb-Dicke regime). This means that the central, carrier excitation band is supposed to be unaffected by vibronic transitions in which the vibrational number changes. While this is strictly true in the Lamb-Dicke limit (infinitely tight confinement), the vibronic transitions do play a role in the Lamb-Dicke regime. In this paper we quantify the asymptotic behavior of their effect with respect to the Lamb-Dicke parameter. In particular, we give analytical expressions for the frequency shift, 'pulling' or 'pushing', produced in the carrier absorption band by the vibronic transitions both for Rabi and Ramsey schemes. This shift is shown to be independent of the initial vibrational state.

Lizuain, I.; Muga, J. G.; Eschner, J. [Departamento de Quimica-Fisica, Universidad del Pais Vasco, Apdo. 644, Bilbao (Spain); ICFO, Institut de Ciencies Fotoniques, 08860 Castelldefels, Barcelona (Spain)

2007-09-15

131

Teaching Students about the Environment with Henry David Thoreau  

ERIC Educational Resources Information Center

|"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.|

Curriculum Review, 2008

2008-01-01

132

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

NASA Astrophysics Data System (ADS)

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.

Moyer, Albert E.

1997-04-01

133

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

ERIC Educational Resources Information Center

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…

Kurtz, Alice K.

134

Guy V. Henry: A Study in Military Leadership.  

National Technical Information Service (NTIS)

This thesis is a biography of Brig Gen Guy V. Henry, Sr. General Henry, a model soldier, who served as a commissioned officer from 1861 through 1899. He commanded a Union brigade in the Civil War, actively participated in several of the most significant c...

M. R. Erlandson

1985-01-01

135

Public Groundwater Supplies in McHenry County.  

National Technical Information Service (NTIS)

All available information was reported on production wells used for public groundwater supplies in McHenry County, Illinois. Sand and gravel deposits in the unconsolidated materials above bedrock are tapped by 26 public water systems in McHenry County as ...

D. M. Woller E. W. Sanderson

1976-01-01

136

The Origins of National Identity in Shakespeare's Henry V  

Microsoft Academic Search

Shakespeare's Henry V explores a feature of the emergence of national identity in the modern period that Machiavellian political thought neglects or dismisses. In particular, Machiavellian political theory cannot persuasively answer the question of why citizens of a nation-state are willing to sacrifice themselves for its sake. Henry V combines an understanding of the necessity for Machiavellian ruthlessness with a

Constance C. T. Hunt

2007-01-01

137

Evolution of the Brans—Dicke Parameter in Generalized Chameleon Cosmology  

NASA Astrophysics Data System (ADS)

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 ?(t) for an expanding Universe in the generalized Brans-Dicke Chameleon cosmology, and obtain an explicit dependence of ?(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.

Mubasher, Jamil; Momeni, D.

2011-09-01

138

The Detection Performance of the Siebert and Dicke-Fix CFAR Radar Detectors  

Microsoft Academic Search

The Siebert and the Dicke-fix CFAR radar detectors, used to maintain a constant false alarm rate (CFAR) in radar receivers under very similar circumstances, are considered. The Siebert detector represents the maximum-likelihood detection procedure for a signal in Gaussian noise of unknown power level, whereas the Dicke-fix makes use of a bandpass limiter to normalize the input and thus ensure

V. G. Hansen; A. J. Zottl

1971-01-01

139

p-branes and exact solutions in the Brans-Dicke cosmology with matter.  

NASA Astrophysics Data System (ADS)

The authors study the effect of the solitonic degree of freedom in string cosmology following the line of Rama (1997). The gas of solitonic p-branes is treated as a perfect fluid in a Brans-Dicke-type theory. In this paper, they find analytic solutions for a few solvable cases of equation of states with the general Brans-Dicke parameter ? and study the cosmology of the solutions. In some cases, the solutions are free from an initial singularity.

Lee, S.-G.; Sin, S.-J.

1998-01-01

140

p-brane cosmology and phases of Brans-Dicke theory with matter  

NASA Astrophysics Data System (ADS)

We study the effect of the solitonic degrees of freedom in string cosmology following the line of Rama. The gas of a solitonic p-brane is treated as a perfect fluid in a Brans-Dicke-type theory. In this paper, we find exact cosmological solutions for any Brans-Dicke parameter ? and for a general parameter ? of the equation of state and classify the cosmology of the solutions on a parameter space of ? and ?.

Park, Chanyong; Sin, Sang-Jin

1998-04-01

141

Comment on the Brans Dicke Bianchi Type-Iii Vacuum Solution  

NASA Astrophysics Data System (ADS)

The author wishes to point out that the Brans-Dicke-Bianchi type-III vacuum solution recently given by Tiwari and Singh (1984) is not new. Moreover, the solution given has no correct Einstein limit, contrary to what is claimed by these authors. The Ellis-MacCallum vacuum solution in the Einstein case can be obtained from the Brans-Dicke solution first given by Lorenz-Petzold (1984).

Lorenz-Petzold, Dieter

1985-02-01

142

A paracrine signal mediates the cell transformation response to low dose gamma radiation in JB6 cells  

SciTech Connect

Radiation at low doses (? 50 cGy) can enhance or reduce tumor incidence in the mouse skin multistage model of carcinogenesis, depending on the timing of radiation exposure relative to chemical initiator. Here we have used JB6 mouse epidermal cells, an in vitro model of late stage tumor promotion, to evaluate the effects of low dose gamma radiation on cell transformation response. JB6 cells were isolated from the DNA-dependent Protein Kinase (DNA-PK) deficient Balb/c mouse that exhibits an unusually sensitive mammary tumor response to ionizing radiation. Exposure of JB6 cells to low dose (2-20 cGy) gamma radiation increased cell transformation response in a dose- and cell density-dependent fashion. JB6 cells were transfected with a membrane targeted enhanced yellow fluorescent protein (EYFP-membrane) and used as bystander cells in a co-culture model. Co-culture of 10 cGy irradiated JB6 cells with na?ve EYFP-membrane cells resulted in a significant increase in EYFP-expressing colonies, relative to co-cultures of sham exposed P+ cells/na?ve EYFP-membrane cells. In contrast, low dose gamma radiation (20 cGy) reduced tumor promoter (epidermal growth factor; 12-O-tetradecanoyl phorbol-13-acetate)-induced transformation response and cell survival in a clonogenic assay to a comparable extent (40%). Our results demonstrate different selective pressures depending on whether low dose radiation modulated the cell transformation response of irradiated or bystander cells, or whether irradiation occurred in conjunction with tumor promoter treatment. The co-culture system developed here is a promising model to define positive and negative selective pressures induced by low dose radiation in a DNA damage repair deficient context that are relevant to carcinogenesis responses.

Weber, Thomas J.; Siegel, Robert W.; Markillie, Lye Meng; Chrisler, William B.; Lei, Xingye C.; Colburn, Nancy H.

2005-05-01

143

The solar and geomagnetic inputs into the JB2008 thermospheric density model for use by CIRA08 and ISO 14222  

NASA Astrophysics Data System (ADS)

Solar and geomagnetic indices are described for use in the Jacchia-Bowman 2008 thermospheric density model (JB2008). There are four solar and two geomagnetic indices used by JB2008. The F10.7, S10.7, M10.7, and Y10.7 solar indices are formed using the JB2006 methodology and they map energy from specific solar irradiance sources to major thermospheric layers. Energy that is deposited to the lower thermosphere and mesopause (85-100 km) is now provided. These solar proxies and indices are compliant with the ISO International Standard 21348 for determining solar irradiances. Reference values of the solar indices and proxies for short-term, intermediate-term, solar cycle, and 25-year periods from solar cycle 23 examples are provided for users who want reference values for planning and tests. The ap geomagnetic and Dst ring current indices are used in a two-index formulation that captures both low/unsettled activity and substorms/storms to represent changes to the neutral thermospheric densities as a result of high-latitude Joule heating and charged particle precipitation. The storm effects change the rate of exospheric temperature change, dTc, which affects satellite orbits. Reference values for ap, Dst, and dTc are provided using an example storm of November 20-21, 2003 for users who want reference values for planning and tests. Use of these solar, geomagnetic, and ring current indices in the JB2008 model produces significant improvements in empirical thermospheric density modeling. JB2008 provides standard deviations of approximately 9-10 percent at 400 km, which is a significant decrease from 16 percent 1-sigma uncertainty previously obtained using the Jacchia 70 model.

Tobiska, W. Kent

144

Online Calendar Henry James's Letters and A Biographical Register of Henry James's Correspondents  

NSDL National Science Digital Library

Hosted by the University of Nebraska Press and created by Steven H. Jobe and Susan E. Gunter, this site offers information on all known letters written by novelist Henry James (more than 10,500) and brief biographical information on the (more than 1,000) recipients of these letters. Users can search the database by date, correspondent, repository, or keyword. Search returns include the date and place of the letter's composition, the addressee's name and identity, the publication source, and the repository in which the letter is held. The site also features comprehensive lists of all published sources of the letters and the more than 130 repositories and private collections where they are held, and statistics on the letters and correspondents. Henry James scholars will quickly find this site to be an invaluable research tool.

Jobe, Steven H.; Gunter, Susan E.

145

The Writings of Henry D. Thoreau  

NSDL National Science Digital Library

Henry David Thoreau is widely considered one of the most important persons in the history of American letters in addition to an international reputation as a naturalist, philosopher, and author. This particular website serves as both a source of information about the authorized Thoreau Edition of his complete works (which was founded in 1966) and the Thoreau Project, which is located at Northern Illinois University, and which is supported by the National Endowment for the Humanities. On the site, visitors can learn about the life and times of Thoreau, read a series of reflections on his book, Walden, and learn about future volumes in the Thoreau Edition. The section dedicated to Thoreau's various writings is quite delightful, as visitors can view original samples of his handwriting, peruse selections from his celebrated journal (which he kept from 1837 to 1861), and view a complete list of his letters, which he composed from 1835 to 1862.

146

Henry Norris Russell and the Expanding Universe  

NASA Astrophysics Data System (ADS)

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.

DeVorkin, D.

2013-04-01

147

Obituary: Henry Albers (1925-2009)  

NASA Astrophysics Data System (ADS)

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.

Chromey, Fred

2011-12-01

148

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

PubMed Central

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-?-methoxy-iso-seco-tanapartholide (?-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-?B transcription factors; therefore, we assessed how ?-tan and Sal A modulate their signaling pathways in JB6P?+?cells. Methods The effects of ?-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-?B activities and protein levels of key AP-1 and NF-?B target genes. Results ?-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-?B transcriptional activities, differentially regulated basal and tumor promoter-induced AP-1 transcriptional activities, and modulated key players of the AP-1 and NF-?B signaling pathways. Conclusions These results highlight the anti-tumor promoting properties of ?-tan and Sal A. These SL molecules isolated from two plant species native to the Middle East may provide opportunities for complementary medicine practices.

2012-01-01

149

Quercetin-3-methyl ether suppresses proliferation of mouse epidermal JB6 P+ cells by targeting ERKs  

PubMed Central

Chemoprevention has been acknowledged as an important and practical strategy for the management of skin cancer. Quercetin-3-methyl ether, a naturally occurring compound present in various plants, has potent anticancer-promoting activity. We identified this compound by in silico virtual screening of the Traditional Chinese Medicine Database using extracellular signal-regulated kinase 2 (ERK2) as the target protein. Here, we showed that quercetin-3-methyl ether inhibited proliferation of mouse skin epidermal JB6 P+ cells in a dose- and time-dependent manner by inducing cell cycle G2–M phase accumulation. It also suppressed 12-O-tetradecanoylphorbol-13-acetate-induced neoplastic cell transformation in a dose-dependent manner. Its inhibitory effect was greater than quercetin. The activation of activator protein-1 was dose-dependently suppressed by quercetin-3-methyl ether treatment. Western blot and kinase assay data revealed that quercetin-3-methyl ether inhibited ERKs kinase activity and attenuated phosphorylation of ERKs. Pull-down assays revealed that quercetin-3-methyl ether directly binds with ERKs. Furthermore, a loss-of-function ERK2 mutation inhibited the effectiveness of the quercetin-3-methyl ether. Overall, these results indicated that quercetin-3-methyl ether exerts potent chemopreventive activity by targeting ERKs.

Mottamal, Madhusoodanan; Liu, Kangdong; Zhu, Feng; Cho, Yong-Yeon; Sosa, Carlos P.; Zhou, Keyuan; Bowden, G.Tim; Bode, Ann M.; Dong, Zigang

2012-01-01

150

Immunostimulatory Effects of ?-glucan Purified from Paenibacillus polymyxa JB115 on Mouse Splenocytes  

PubMed Central

We investigated the effects of ?-glucan purified from Paenibacillus polymyxa JB115 on the viability and proliferation of splenocytes. Splenocytes play a critical role in host immunity. MTT assays and trypan blue exclusion tests revealed that ?-glucan significantly promoted the viability and proliferation of splenocytes over a range of concentrations. However, there was no specific subset change. ?-glucan protected splenocytes from cytokine withdrawal-induced spontaneous cell death. For further mechanistic studies, ELISA assay revealed that ?-glucan enhanced the expression of anti-apoptotic molecules and interleukin 7 (IL-7), a cytokine critical for lymphocyte survival. We also investigated the IL-2 dependency of ?-glucan-treated splenocytes to determine if treated cells could still undergo clonal expansion. In flow cytometric analysis, ?-glucan induced increased levels of the activation marker CD25 on the surface of splenocytes and ?-glucan-treated splenocytes showed higher proliferation rates in response to IL-2 treatment. This study demonstrates that ?-glucan can enhance the survival of splenocytes and provides valuable information to broaden the use of ?-glucan in research fields.

Kim, Ji-Mi

2012-01-01

151

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

SciTech Connect

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.

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

2004-06-15

152

Self-similar chameleon Jordan-Brans-Dicke cosmological models  

NASA Astrophysics Data System (ADS)

In this paper we study the chameleon Jordan-Brans-Dicke (JBD) cosmological models under the hypothesis of self-similarity. Since there are several ways to define the matter Lagrangian for a perfect fluid: L m =-? and L m =??, we show that they bring us to obtain two completely different cosmological models. In the first approach, L m =-?, there is ordinary matter conservation, while in the second approach, L m =??, we get matter creation processes. We deduce for each approach the behaviour of each physical quantity, under the self-similar hypothesis, by employing the Lie group method. The results are quite general and valid for any homogeneous geometry (FRW, Bianchi types, etc.). As example, we calculate exact solutions for each approach by considering the case of a Bianchi II geometry. In this way we can determine the exact behaviour of each physical quantity and in particular of G eff and U (the potential that mimics the cosmological constant).We compare the solutions with the obtained ones in the framework of the usual JBD models.

Belinchón, J. A.

2013-08-01

153

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

154

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

155

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

156

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

157

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

Microsoft Academic Search

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. \\

Albert E. Moyer

1997-01-01

158

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

159

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

160

18. Photocopy of Photograph (Original held by Henry Ford Archives, ...  

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

18. Photocopy of Photograph (Original held by Henry Ford Archives, Dearborn, Michigan, Detroit Edison Negative No. 3545, 5 October 1915) INTERIOR VIEW, MACHINE ROOM, LOOKING SOUTH - Detroit Edison Hart Substation, 11736 East Vernor, Detroit, Wayne County, MI

161

24. Historic American Buildings Survey Photographed by Henry F. Withey, ...  

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

24. Historic American Buildings Survey Photographed by Henry F. Withey, November, 1936 RUINS OF GATEWAY TO OLD LAUNDRY AND SWIMMING POOL - Mission San Luis Rey de Francia, Mission Road, Oceanside, San Diego County, CA

162

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

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

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

163

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

164

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

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

10. Historic American Buildings Survey Photographed by Henry F. Withey November, 1936 VIEW TO THE NORTH FROM BELL TOWER - Mission San Luis Rey de Francia, Mission Road, Oceanside, San Diego County, CA

165

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

PubMed

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

Spiegel, Allen D; Kavaler, Florence

2003-08-01

166

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

167

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

168

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

169

David Henry and Tom Hogan: Stop the Clot  

Center for Biologics Evaluation and Research (CBER)

Text Version... Page 2. Stop the Clot ™ www.stoptheclot.org David Henry and Tom Hogan ... Future Aging Baby Boomers Stop the Clot ™ Page 13. ... More results from www.fda.gov/downloads/advisorycommittees/committeesmeetingmaterials

170

Statistical Thermodynamics of Simple Liquid Mixtures: Henry's Constants.  

National Technical Information Service (NTIS)

The cell-theory partition function of Eckert and Renon is useful for calculating Henry's constants for solutes, if the temperature is well below the solute's critical temperature. However, the cell theory cannot reproduce the experimentally observed maxim...

R. C. Miller J. M. Prausnitz

1969-01-01

171

The role of Patrick Henry in the stamp act debate  

Microsoft Academic Search

Considerable uncertainty surrounds the role of Patrick Henry in the Stamp Act debate because the reports of the debate are incomplete and dubious. From re?examination of the records a more complete portrait of Henry as legislative advocate emerges. The study affirms the radical arguments of the Caesar?Brutus speech, and it reconstructs its oft?quoted conclusion. This oratorical achievement, though, when placed

David A. McCants

1981-01-01

172

Suetonius, Henri de Valois and the art of political biography  

Microsoft Academic Search

During the closing years of his reign, Henri III was the object of a sustained and bitter polemical attack from his adversaries,\\u000a especially those who supported the League and Guise family. Amongst the numerous pamphlets appeared a number of “biographies”\\u000a of Henri which sought to destroy his credibility as King. This article examines briefly the nature of the biography as

Keith C. Cameron

1995-01-01

173

Henry Ford: critical evaluations in business and management  

Microsoft Academic Search

This collection includes evaluations of and responses to the contributions made by Henry Ford and the ways in which his influence helped shape the understanding of management practices.\\u000aHenry Ford was an eccentric, and occasionally enlightened, thinker and remains a controversial figure today. He developed F.W. Taylor's ideas of scientific management (the subject of another four volume collection in this

John C Wood; Michael C Wood

2003-01-01

174

Ronda S. Henry-Tillman, MD, FACS.  

PubMed

Dr Henry-Tillman was recently appointed as a member of the Advisory Committee on Research on Women's Health at the National Institutes of Health (NIH). This committee assists the Office of Research on Women's Health (ORWH) and the NIH in addressing scientific, legal, and ethical issues affecting the health of the nation's women through biomedical and behavioral research and related career opportunities. The ORWH was established in 1990 by the NIH and statutorily mandated by Congress in 1993 as a mechanism for eliciting advice and recommendations on priority issues affecting women's health research. Advisory committee members are expected to provide guidance in such areas as refinement of the NIH's women's health research agenda, exploration of questions regarding gender difference in clinical drug trials, development of methodologies that enhance research on health needs of women, and monitoring the inclusion of women in clinical trials funded by the NIH. The director of the Office of Research on Women's Health is Dr Vivian W. Pinn, former president of the National Medical Association. PMID:20355358

Henry-Tillman, Ronda S

2010-03-01

175

Henry W. Riecken Jr. (1917-2012).  

PubMed

Presents an obituary for Henry (Hank) W. Riecken Jr. In 1950, Riecken received his doctorate from Harvard University, having studied in the Department of Social Relations, which enjoyed a well-known relationship with the Department of Psychology. A thought leader, and a follower and booster of interesting thoughts (more prescience), Riecken was the first director of the National Science Foundation's (NSF's) Office of Social Sciences (later called a division) in 1959. As vice president and then president of the Social Science Research Council (SSRC) from 1966 to 1971, Hank led the development of the first state-of-the-art monograph on randomized controlled trials in the United States. Riecken was a member of the first Director's Advisory Committee at the National Institutes of Health. He became a member of the National Academy of Sciences' Board on Medicine in 1969 (one of two social scientists) and, as a founding member, assisted in the challenging effort to create the Institute of Medicine (IOM) in 1971. Hank is survived by his children Gilson, Susan, and Anne. He talked about them often, gently, and proudly and clearly loved them. The current Riecken Foundation, whose mission aims at substantial enhancements to libraries in Guatemala, is a testimony to Riecken's beneficence and to the intellectually generous spirit of him and his family. PMID:23895610

Boruch, Robert F

176

Qualitative analysis of cosmological models in Brans-Dicke theory, solutions from non-minimal coupling and viscous universe  

Microsoft Academic Search

Using dynamical system theory we investigate homogeneous and isotropic models in Brans-Dicke theory for perfect fluids with general equation of state and arbitrary (omega). Phase diagrams are drawn on the Poincare sphere which permits a qualitative analysis of the models. Based on this analysis, we construct a method for generating classes of solutions in Brans-Dicke theory. The same technique is

C. A. Romerofilho

1988-01-01

177

Effect of substrate Henry's constant on biofilter performance.  

PubMed

Butanol, ether, toluene, and hexane, which have Henry's constants ranging from 0.0005 to 53, were used to investigate the effects of substrate solubility or availability on the removal of volatile organic compounds (VOCs) in trickle-bed biofilters. Results from this study suggest that, although removal of a VOC generally increases with a decrease in its Henry's constant, an optimal Henry's constant range for biofiltration may exist. For the treatment of VOCs with high Henry's constant values, such as hexane and toluene, the transfer of VOCs between the vapor and liquid phases or between the vapor phase and the biofilm is a rate-determining step. However, oxygen (O2) transfer may become a rate-limiting step in treating VOCs with low Henry's constants, such as butanol, especially at high organic loadings. The results demonstrated that in a gas-phase aerobic biofilter, nitrate can serve both as a growth-controlling nutrient and as an electron acceptor in a biofilm for the respiration of VOCs with low Henry's constants. Microbial communities within the biofilters were examined using denaturing gradient gel electrophoresis to provide a more complete picture of the effect of O2 limitation and denitrification on biofilter performance. PMID:15115369

Zhu, Xueqing; Suidan, Makram T; Pruden, Amy; Yang, Chunping; Alonso, Cristina; Kim, Byung J; Kim, Byung R

2004-04-01

178

Excited state quantum phase transitions and chaos in the Dicke model  

NASA Astrophysics Data System (ADS)

In this contribution, the critical behavior of excited state quantum phase transitions (ESQPT's) and its relation to order and chaos in the Dicke model are studied. This model is nonintegrable. For comparison, the same problem is studied for the Jaynes-Cummings model which is, somehow, the integrable version of the Dicke model. The existence of an ESQPT is confirmed in both cases. However, in the Dicke model the signatures of criticality in excited states are blurred by the onset of quantum chaos. It is concluded that the order-to-chaos transition just below the critical energy gives us a chance to study the impact of chaotic dynamics on the signatures of ESQPTs.

Pérez-Fernández, P.; Relaño, A.; Cejnar, P.; Arias, J. M.; Dukelsky, J.; García-Ramos, J. E.

2012-10-01

179

Prediction of environmental partition coefficients and the Henry’s law constants for 135 congeners of chlorodibenzothiophene  

Microsoft Academic Search

Polychlorinated dibenzothiophenes (PCDTs) could be classified as persistent organic pollutants (POPs) in the environment and are particularly interesting due to their structural resemblance to highly toxic dioxins. We show here some basic environmental properties such as n-octanol water (KOW), n-octanol\\/air (KOA) and air\\/water (KAW) partition coefficients as well as Henry’s law constants (KH) for all 135 congeners of chlorodibenzothiophene. Predictions

Tomasz Puzyn; Pawe? Rostkowski; Artur ?wieczkowski; Aneta J?drusiak; Jerzy Falandysz

2006-01-01

180

Dark Energy from Fifth-Dimensional Brans-Dicke Theory  

NASA Astrophysics Data System (ADS)

Following the approach of the induced-matter theory, we investigate the cosmological implications of a five-dimensional Brans-Dicke (BD) theory, and propose to explain the acceleration of the universe. After inducing in a four-dimensional hypersurface, we classify the energy-momentum tensor into two parts in a way that, one part represents all kind of the matter (the baryonic and dark) and the other one contains every extra terms emerging from the scale factor of the fifth dimension and the scalar field, which we consider as the energy-momentum tensor of dark energy. We also separate the energy-momentum conservation equation into two conservation equations, one for matter and the other for dark energy. We perform this procedure for different cases, without interacting term and with two particular (suitable) interacting terms between the two parts. By assuming the parameter of the state equation for dark energy to be constant, the equations of the model admit the power-law solutions. Though, the noninteracting case does not give any accelerated universe, but the interacting cases give both decelerated and accelerated universes. For the interacting cases, we figure out analytically the acceptable ranges of some parameters of the model, and also investigate the data analysis to test the model parameter values consistency with the observational data of the distance modulus of 580 SNe Ia compiled in Union2.1. For one of these interacting cases, the best fitted values suggest that BD coupling constant (?) is ? -7.75, however, it also gives the state parameter of dark energy (wX) equal to ? -0.67. In addition, the model gives the Hubble and deceleration parameters at the present time to be H? ? 69.4 (km/s)/Mpc and q? ? -0.38 (within their confidence intervals), where the scale factor of the fifth dimension shrinks with the time.

Bahrehbakhsh, Amir F.; Farhoudi, Mehrdad; Vakili, Hajar

2013-08-01

181

Bianchi type-I domain walls with negative constant deceleration parameter in Brans-Dicke theory  

NASA Astrophysics Data System (ADS)

Bianchi type-I space-time is considered in the presence of a domain walls source in the scalar-tensor theory of gravitation proposed by Brans and Dicke (C.H. Brans and R.H. Dicke, Phys. Rev. 24, 925 (1961)). With the help of the special law of variation for Hubble's parameter proposed by Bermann (M.S. Berman, Nuovo Cimento B 74, 182 (1983)) a cosmological model with negative constant deceleration parameter is obtained in the presence of domain walls. Some physical properties of the model are also discussed.

Katore, S. D.

2011-04-01

182

Dicke-like quantum phase transition and vacuum entanglement with two coupled atomic ensembles  

SciTech Connect

We study the coherent cooperative phenomena of the system composed of two interacting atomic ensembles in the thermodynamic limit. Remarkably, the system exhibits the Dicke-like quantum phase transition and entanglement behavior although the governing Hamiltonian is fundamentally different from the spin-boson Dicke Hamiltonian, offering the opportunity for investigating collective matter-light dynamics with pure matter waves. The model can be realized with two Bose-Einstein condensates or atomic ensembles trapped in two optical cavities coupled to each other. The interaction between the two separate samples is induced by virtual photon exchange.

Zheng Shibiao [Department of Physics, Fuzhou University, Fuzhou 350002 (China)

2011-09-15

183

Static and rotating electrically charged black holes in three-dimensional Brans-Dicke gravity theories  

Microsoft Academic Search

We obtain static and rotating electrically charged black holes of a\\u000aEinstein-Maxwell-Dilaton theory of the Brans-Dicke type in (2+1)-dimensions.\\u000aThe theory is specified by three fields, the dilaton, the graviton and the\\u000aelectromagnetic field, and two parameters, the cosmological constant and the\\u000aBrans-Dicke parameter. It contains eight different cases, of which one\\u000adistinguishes as special cases, string theory, general relativity

Óscar Dias; Jose' P. S. Lemos

2001-01-01

184

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

SciTech Connect

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].

Saaidi, Kh.; Mohammadi, A.; Sheikhahmadi, H. [Department of Physics, Faculty of Science, University of Kurdistan, Sanandaj (Iran, Islamic Republic of)

2011-05-15

185

Stellar explosion in the weak field approximation of the Brans–Dicke theory  

Microsoft Academic Search

We treat a very crude model of an exploding star, in the weak field approximation of the Brans–Dicke theory, in a scenario that resembles some characteristic data of a type Ia supernova. The most noticeable feature, in the electromagnetic component, is the relationship between the absolute magnitude at maximum brightness of the star and the decline rate in one magnitude

Victor H. Hamity; Daniel E. Barraco

2005-01-01

186

Stellar explosion in the weak field approximation of the Brans Dicke theory  

Microsoft Academic Search

We treat a very crude model of an exploding star, in the weak field approximation of the Brans Dicke theory, in a scenario that resembles some characteristic data of a type Ia supernova. The most noticeable feature, in the electromagnetic component, is the relationship between the absolute magnitude at maximum brightness of the star and the decline rate in one

Victor H. Hamity; Daniel E. Barraco

2005-01-01

187

The nonuniqueness of the limit transition from Brans-Dicke theory to Einstein theory  

Microsoft Academic Search

It is commonly accepted that Brans-Dicke theory (BDT) undergoes a transition to general relativity in the limit of omega tending to infinity, where omega is the BDT parameter. In the present paper it is shown that the BDT is degenerate with respect to the exponent k, and therefore it does not admit a unique transition in the limit of omega

V. M. Pyzh

1981-01-01

188

Dick and Jane Meet John and Judy: The Development of the Cathedral Readers.  

ERIC Educational Resources Information Center

A study examined the historical development of the Cathedral Basic Readers (a.k.a. the Dick and Jane readers), a special edition used to teach reading in Catholic schools. Three questions served as a guiding framework: (1) what factors led to the creation, development, and discontinuance of this Reader series? (2) what were the differences between…

Spiker, Thecla M.

189

A dark energy and phantom energy dilaton-Brans-Dicke multiverse with positive cosmological constant  

NASA Astrophysics Data System (ADS)

We introduce a four-dimensional dilaton-Brans-Dicke cosmological scenario corresponding to multiverse filled with dark energy or phantom energy having a positive cosmological constant and containing infinite singularities with eternally Big Rip. Many interesting consequences are revealed and discussed in some details.

Ahmad Rami, El-Nabulsi

2010-06-01

190

Dicke quantum phase transition with a superfluid gas in an optical cavity.  

PubMed

A phase transition describes the sudden change of state of a physical system, such as melting or freezing. Quantum gases provide the opportunity to establish a direct link between experiments and generic models that capture the underlying physics. The Dicke model describes a collective matter-light interaction and has been predicted to show an intriguing quantum phase transition. Here we realize the Dicke quantum phase transition in an open system formed by a Bose-Einstein condensate coupled to an optical cavity, and observe the emergence of a self-organized supersolid phase. The phase transition is driven by infinitely long-range interactions between the condensed atoms, induced by two-photon processes involving the cavity mode and a pump field. We show that the phase transition is described by the Dicke Hamiltonian, including counter-rotating coupling terms, and that the supersolid phase is associated with a spontaneously broken spatial symmetry. The boundary of the phase transition is mapped out in quantitative agreement with the Dicke model. Our results should facilitate studies of quantum gases with long-range interactions and provide access to novel quantum phases. PMID:20428162

Baumann, Kristian; Guerlin, Christine; Brennecke, Ferdinand; Esslinger, Tilman

2010-04-29

191

Possible observational manifestations of wormholes in the Brans-Dicke theory  

SciTech Connect

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.

Alexeyev, S. O., E-mail: alexeyev@sai.msu.ru; Rannu, K. A., E-mail: rannu@xray.sai.msu.ru [Sternberg Astronomical Institute (Russian Federation); Gareeva, D. V., E-mail: 4elesta@mail.ru [Moscow State University (Russian Federation)

2011-10-15

192

Exact Solutions in Brans-Dicke Theory: A Dynamical System Approach.  

National Technical Information Service (NTIS)

A method is furnished for constructing isotropic and homogeneous solutions in Brans-Dicke theory based on the analysis of the dynamical system formed by the field equations. Large classes of solutions found in the literature are recovered and shown to be ...

C. Romero H. P. Oliveira

1988-01-01

193

Studies on production of thermostable alkaline protease from thermophilic and alkaliphilic Bacillus sp. JB99 in a chemically defined medium  

Microsoft Academic Search

The thermophilic and alkaliphilic Bacillus sp. JB-99 was isolated from sugarcane molasses and was cultured in 250 ml Erlenmeyer flasks containing 50 ml of synthetic medium consisting of (g\\/l): citric acid; 10.0, NaNO3; 10.0, K2HPO4; 5.0, MgSO4.7H2O; 0.3, CaCl2.2H2O; 0.2, NaCl; 5.0 and Na2CO3; 10.0 at pH 10.0. The cultures were incubated at 55°C with agitation (180 rpm) for 24

B Johnvesly; G. R Naik

2001-01-01

194

Henry's law constant of methanol in pulping spent liquors  

SciTech Connect

A direct headspace gas chromatographic method was used to measure Henry's constants of methanol in pulping spent liquors. The liquors were from kraft pulp mills and laboratory pulping experiments using various wood species. All liquors studied had a total solid less than 25%. It was found that temperature and concentration of inorganic solids, mainly sodium salts, are the two variables that significantly affect the Henry's constants of methanol. A two- parameter (temperature and liquor total solids content) correlation was developed based on the experimental data and is reported in this study.

Zhu, J.Y.; Liu, P.H.; Chai, X.S.; Bullock, K.R.; Teja, A.S.

2000-05-01

195

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

196

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

Microsoft Academic Search

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

Carwell

1997-01-01

197

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

198

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

199

Dr. Entrepreneur: Dr. Henry Louis "Skip" Gates, Jr.  

ERIC Educational Resources Information Center

|In an interview, Dr. Henry Louis ("Skip") Gates, Jr., discusses the status of black studies both at his home institution, Harvard University (Massachusetts), and in the academy; the changing image of African American intellectuals; and the challenges of managing a full intellectual career in the current higher education environment. (Author/MSE)|

Black Issues in Higher Education, 1999

1999-01-01

200

A Conservation with...Henry Louis Gates, Jr.  

ERIC Educational Resources Information Center

|Presents an interview between National Endowment for the Humanities chairman, Lynne V. Cheney, and Harvard professor, Henry Louis Gates, Jr. Includes discussion of multiculturalism as it relates to free speech, sexism, racism, hate speech, and ethnocentrism. Emphasizes both the open tradition of Western culture and the recent pressure for…

Cheney, Lynne V.

1991-01-01

201

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

PubMed

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

Hyson, J M; Swanson, B Z

1996-07-01

202

Power and the Self in Henry Adams's Art of Biography  

Microsoft Academic Search

Henry Adams's The Life of Albert Gallatin and John Randolph show early in his career his ambivalence about personal power and its relation to accomplishment. Gallatin and Randolph represent not only different political principles but also contrasting views of power. Gallatin's scientific mind makes possible his transcendence of politics to \\

Lois Hughson

1984-01-01

203

Power and the Self in Henry Adams's Art of Biography  

Microsoft Academic Search

:Henry Adams's The Life of Albert Gallatin and John Randolph show early in his career his ambivalence about personal power and its relation to accomplishment. Gallatin and Randolph represent not only different political principles but also contrasting views of power. Gallatin's scientific mind makes possible his transcendence of politics to \\

Lois Hughson

1984-01-01

204

Henry Johnson: A Scholar-Educator in Historical Retrospect.  

ERIC Educational Resources Information Center

As a teacher of history in the early 20th century, Henry Johnson believed in the importance of making history meaningful to students. He hoped that it would teach critical inquiry skills which could be used throughout life. He also emphasized the developmental aspect of history to explain how the present grew out of the past. Johnson studied the…

Schneider, Donald O.

205

Battling for Liberty: Tecumseh's and Patrick Henry's Language of Resistance.  

ERIC Educational Resources Information Center

|The reading program described in this lesson plan extends the study of Patrick Henry's "Give Me Liberty or Give Me Death" speech to demonstrate the ways Native Americans also resisted oppression through rhetoric. During five 50-minute lessons, students will: develop an awareness of both Native and non-Native movements to resist oppression and…

Gardner, Traci

206

USING THE STATIC HEADSPACE METHOD TO DETERMINE HENRY'S LAW CONSTANTS  

EPA Science Inventory

A new, accurate, and experimentally simple method has been developed to determine dimensionless Henry's law constants using the static headspace method. he method appears applicable to a wide range of volatile and semivolatile organic compounds. he method work well even for methy...

207

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

Microsoft Academic Search

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

Albert E. Moyer

1998-01-01

208

Joseph Henry: The Rise of an American Scientist  

Microsoft Academic Search

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

Elspeth Crawford

1998-01-01

209

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

210

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 1936 GENERAL VIEW TO THE WEST FROM ROOF OF THE STONE CHURCH - Mission San Juan Capistrano, Olive Street, between U.S. Highway 101 & Main Street, San Juan Capistrano, Orange County, CA

211

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 GENERAL VIEW TO THE NORTH FROM ROOF OF THE STONE CHURCH - Mission San Juan Capistrano, Olive Street, between U.S. Highway 101 & Main Street, San Juan Capistrano, Orange County, CA

212

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 December 1936 VIEW OF MISSION VALLEY AND THE MISSION (LOOKING EAST FROM PRESIDIO HILL AT OLD TOWN, ORIGINAL SITE OF FIRST MISSION. - Mission San Diego de Alcala, Misson Valley Road, San Diego, San Diego County, CA

213

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

ERIC Educational Resources Information Center

|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…

Davis, Andrea

2011-01-01

214

The Henry semianalytical solution for saltwater intrusion with reduced dispersion  

NASA Astrophysics Data System (ADS)

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.

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

2012-06-01

215

The Teaching Approach of Henry Schaefer-Simmern.  

ERIC Educational Resources Information Center

This description of the teaching approach of Henry Schaefer-Simmern emphasizes his use of questioning to evoke student self-evaluation and to develop clarity of vision and interfunctional unity in students' art products and their mental, artistic conceiving. Two case reports of his work with elementary students are included. (Author/SJL)

Abrahamson, Roy E.

1980-01-01

216

Activist management : the institutional economics of Henry S. Dennison  

Microsoft Academic Search

Henry S. Dennison was a progressive Boston business man and economic analyst who, in both his private and public activities in the first half of the twentieth century, demonstrated an activist concern with the place and character of the modem business organisation, the control and management of these bodies and their human and non-human constituents, and the impact of the

Kyle Donovan Bruce

1999-01-01

217

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

ERIC Educational Resources Information Center

|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.|

Kashani, Tony

2012-01-01

218

Downstream Changes in Stream Power in the Henry Mountains, Utah  

Microsoft Academic Search

Total stream power does not necessarily increase systematically in the downstream direction because of the conflicting influences of channel slope, width, and depth. Historical records and field data for arroyo systems of the northern Henry Mountains, south-central Utah, show that total stream power decreased in the downstream direction during a deposition period before 1896 and increased downstream during an erosion

William L. Graf

1983-01-01

219

An investigation of relaxation processes in a pyrene-doped diphenyl crystal using the Dicke optical superradiance technique  

Microsoft Academic Search

The effect of phonons on the formation of Dicke optical superradiance in pyrene-doped diphenyl crystals has been investigated, experimentally. Superradiance measurements were carried out at the 1B2u - 1Ag transition at 3739.3 A. The feasibility of obtaining information about relaxation processes on the basis of the Dicke optical superradiance measurements phenomenon is established, and the temperature dependence of the intensity

Iu. V. Naboikin; S. N. Andrianov; P. V. Zinovev; Iu. V. Maliukin; V. V. Samartsev

1985-01-01

220

Dicke-model phase transition in the quantum motion of a Bose-Einstein condensate in an optical cavity.  

PubMed

We show that the motion of a laser-driven Bose-Einstein condensate in a high-finesse optical cavity realizes the spin-boson Dicke model. The quantum phase transition of the Dicke model from the normal to the superradiant phase corresponds to the self-organization of atoms from the homogeneous into a periodically patterned distribution above a critical driving strength. The fragility of the ground state due to photon measurement induced backaction is calculated. PMID:20481867

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

2010-04-02

221

Quark-hadron phase transition in a chameleon Brans-Dicke model of brane gravity  

NASA Astrophysics Data System (ADS)

In this work, the quark-hadron phase transition in a chameleon Brans-Dicke model of brane world cosmology within an effective model of QCD is investigated. Whereas, in the chameleon Brans-Dicke model of brane world cosmology, the Friedmann equation and conservation of density energy are modified, resulting in an increased expansion in the early Universe. These have important effects on quark-hadron phase transitions. We investigate the evolution of the physical quantities relevant to quantitative descriptions of the early times, namely, the energy density, ?, temperature, T, and the scale factor, a, before, during, and after the phase transition. We do this for smooth crossover formalism in which lattice QCD data is used for obtaining the matter equation of state and first order phase transition formalism. Our analyses show that the quark-hadron phase transition has occurred at approximately one nanosecond after the big bang and the general behavior of temperature is similar in both of two approaches.

Saaidi, Kh.; Mohammadi, A.; Golanbari, T.; Sheikhahmadi, H.; Ratra, B.

2012-08-01

222

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

SciTech Connect

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.

Olmo, Gonzalo J.; Sanchis-Alepuz, Helios [Departamento de Fisica Teorica and IFIC, Centro Mixto Universidad de Valencia - CSIC, Facultad de Fisica, Universidad de Valencia, Burjassot-46100, Valencia (Spain) and Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid (Spain); Institut fuer Physik, Karl-Franzens-Universitaet Graz (Austria)

2011-05-15

223

Keldysh approach for nonequilibrium phase transitions in quantum optics: Beyond the Dicke model in optical cavities  

NASA Astrophysics Data System (ADS)

We investigate nonequilibrium phase transitions for driven atomic ensembles interacting with a cavity mode and coupled to a Markovian dissipative bath. In the thermodynamic limit and at low frequencies, we show that the distribution function of the photonic mode is thermal, with an effective temperature set by the atom-photon interaction strength. This behavior characterizes the static and dynamic critical exponents of the associated superradiance transition. Motivated by these considerations, we develop a general Keldysh path-integral approach that allows us to study physically relevant nonlinearities beyond the idealized Dicke model. Using standard diagrammatic techniques, we take into account the leading-order corrections due to the finite number N of atoms. For finite N, the photon mode behaves as a damped classical nonlinear oscillator at finite temperature. For the atoms, we propose a Dicke action that can be solved for any N and correctly captures the atoms’ depolarization due to dissipative dephasing.

Torre, Emanuele G. Dalla; Diehl, Sebastian; Lukin, Mikhail D.; Sachdev, Subir; Strack, Philipp

2013-02-01

224

Stationary Axisymmetric Solutions in the Vacuum Jordan-Brans-Dicke Theory  

NASA Astrophysics Data System (ADS)

It is shown that any stationary axisymmetric solution to the vacuum field equations of the Jordan-Brans-Dicke (JBD) theory may be obtained from a “composition” of any stationary axisymmetric vacuum Einstein spacetime with the Weyl class of metrics. Thus, generating solution techniques can be used to obtain any stationary axisymmetric JBD vacuum solution. In this manner, C. B. G. McIntosh's results concerning this topic are improved upon.

García, Alberto; Bretón, Nora; Hauser, Isidore

1988-05-01

225

Comment on the Brans-Dicke-Bianchi type-I solution  

NASA Astrophysics Data System (ADS)

We should like to point out that the Brans-Dicke-Bianchi type-I vacuum solution recently given by Ram and Singh is wrong. The correct solution is nothing but a special case of the general BDT-Bianchi type-I solutions given by us recently (Lorenz-Petzold, 1984). It is the aim of this comment to rediscuss the corresponding field equations and to disprove the statement that the (correct) solution has no analogy in Einstein's theory.

Lorenz-Petzold, Dieter

1984-03-01

226

Jack bean ?-mannosidase (Jb?-man): tolerance to alkali, chelating and reducing agents and energetics of catalysis and inhibition.  

PubMed

Investigations of the catalytic and structural transitions of jack bean ?-mannosidase (Jb?-man) are described in the present paper. The enzyme was maximally stable at pH 5.0; however, when incubated in the pH range of 11.0-12.0, showed 1.3 times higher activity and also stability for longer time. The free amino group at or near the active site was probably involved in the stability and activation mechanism. The active site is constituted by the association of two unidentical subunits connected by disulfide linkages. The metalloenzyme has Zn(2+) ions tightly bound and chelation reduces the thermal stability of the protein. Energetics of catalysis and thermodynamics of inhibition of the enzyme were also carried out. PMID:21924285

Kumar, Avinash; Gaikwad, Sushama M

2011-09-08

227

Symmetry adapted states and the quantum phase transition in the Dicke model  

SciTech Connect

We study the phase transition properties of the ground state of the Dicke model by means of a variational procedure together with the catastrophe formalism. The proposed variational state is the tensorial product of the SU(2) and Weyl coherent states, and the expectation value of the Dicke Hamiltonian with respect this state is calculated. The stability properties of the energy surface exhibit a phase transition from the normal to the super-radiant behavior of the two-level atoms, when {omega}-tilde{sub a{omega}}-tilde{sub F} = {+-}4{gamma}-tilde{sup 2}. At the same time, the analytic form of the ground state in terms of the minimum critical points of the system is obtained. The Dicke Hamiltonian is invariant under transformations of the point group C{sub 2} = {l_brace}I,exp(i{pi}{Lambda}-circumflex){r_brace}, with {Lambda} circumflex the excitation number operator. To restore this parity symmetry, we separate the variational proposed states into orthogonal even and odd components, which give rise to analytic expressions for the ground and first excited states. The fidelity of these projected variational states is verified by studying their overlap with the exact quantum results.

Castanos, O.; Nahmad-Achar, E.; Lopez-Pena, R.; Hirsch, J. G. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico Apdo. Postal 70-543, Mexico D. F., C.P. 04510 (Mexico)

2010-12-23

228

Electrostatic potential of a point charge in a Brans-Dicke Reissner-Nordström field  

NASA Astrophysics Data System (ADS)

We consider the Brans-Dicke Reissner-Nordström spacetime in isotropic coordinates and the electrostatic field of an electric point charge placed outside its surface of inversion. We treat the static electric point charge as a linear perturbation on the Brans-Dicke Reissner-Nordström background. We develop a method based upon the Copson method to convert the governing Maxwell equation on the electrostatic potential generated by the static electric point charge into a solvable linear second-order ordinary differential equation. We obtain a closed-form fundamental solution of the curved-space Laplace equation arising from the background metric, which is shown to be regular everywhere except at the point charge and its image point inside the surface of inversion. We also develop a method that demonstrates that the solution does not contain any other charge that may creep into the region that lies beyond the surface of inversion and which is not covered by the isotropic coordinates. The Brans-Dicke Reissner-Nordström spacetime therefore is linearly stable under electrostatic perturbations. This stability result includes the three degenerate cases of the fundamental solution that correspond to the Brans Type 1, the Reissner-Nordström and the Schwarzschild background spacetimes.

Watanabe, M.; Lun, A. W. C.

2013-08-01

229

Metallic nickel nano- and fine particles induce JB6 cell apoptosis through a caspase-8\\/AIF mediated cytochrome c-independent pathway  

Microsoft Academic Search

BACKGROUND: Carcinogenicity of nickel compounds has been well documented. However, the carcinogenic effect of metallic nickel is still unclear. The present study investigates metallic nickel nano- and fine particle-induced apoptosis and the signal pathways involved in this process in JB6 cells. The data obtained from this study will be of benefit for elucidating the pathological and carcinogenic potential of metallic

Jinshun Zhao; Linda Bowman; Xingdong Zhang; Xianglin Shi; Binghua Jiang; Vincent Castranova; Min Ding

2009-01-01

230

Intermodern Travel: J.B. Priestley’s English and American Journeys in Intermodernism: Literary Culture in Interwar and Wartime Britain  

Microsoft Academic Search

After working in the Hollywood studios during the 1930s, writers like J.B. Priestly looked back to England for cultural origins that might resist the modern forces of American capitalism and popular culture. Most, as writers of satires and social comedies, doubted that they would find them, and their comedies often reveal an ambivalence about both American culture and the attempts

Lisa Colletta

2009-01-01

231

Henry Draper Extension 2 (Cannon+ 1949; ADC 1989)  

NASA Astrophysics Data System (ADS)

Harvard Annals vol 112 is the last extension of the Henry Draper Catalog. It consists entirely of charts. These are copies of the plates on which the number of the star and is spectral type is marked in ink. This catalog is a files of the star numbers and the corresponding spectral types. Note that the positions of the stars from this catalog are computed by Nesterov et al. (1995A&AS..110..367N); see catalog . (1 data file).

Cannon, Annie J.; Mayall, Margaret W.

1997-02-01

232

Simplified Henry technique for initial recognition of Listeria colonies.  

PubMed Central

The Henry oblique transmitted-light viewing technique was modified to provide a more precise, convenient, and familiar manner with which to read (score) and recognize colonies of listeriae by their distinct bluish cast. The simplified technique involved illuminating each colony directly with a high-intensity lamp while viewing it with a hand lens at a precise angle in place of a scanning light microscope.

Lachica, R V

1990-01-01

233

Scientific Biography of Henri Bénard (1874–1939)  

Microsoft Academic Search

\\u000a Henri Claude Bénard was born at Lieurey, a small French village in the region of Eure, in Normandy, on October 25\\u000a th\\u000a , 1874. He was the only son of Felix A. Bénard (1851–1884) and Hélène M. Mangeant (1837–1901) [1–3]. His father was a small investor, who died very young. H. Bénard finished elementary school in the district of Lisieux

José Wesfreid

234

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

PubMed

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

Tansey, E M

2011-12-20

235

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

PubMed

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

Jellinek, E H

2009-11-01

236

Henry James in a Victorian Crowd: œThe Birthplace in Context  

Microsoft Academic Search

“Henry James in a Victorian Crowd: ‘The Birthplace’ in Context” examines the short story “The Birthplace” in light of Victorian cultural criticism of the town of Stratford, England, and its Shakespeare Birthplace Museum. By the end of the nineteenth century, a skeptical attitude regarding Stratford’s claim to represent Shakespeare was altogether matter-of-course. Focusing on the protagonist Gedge’s matured irony, criticism

Andrea Zemgulys

2008-01-01

237

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

NASA Astrophysics Data System (ADS)

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 a

Crawford, Elspeth

1998-09-01

238

Determination of Henry`s law constants by equilibrium partitioning in a closed system using a new in situ optical absorbance method  

Microsoft Academic Search

Currently, a great deal of interest exists in developing quantitative descriptions of the transport behavior for organic chemical compounds in the environment. Transport between water and air is of particular significance in this regard. A new method for measurement of thermodynamic Henry`s law constants (H) is reported. In this method, the optical absorbance of a dilute aqueous solution containing an

John M. Allen; Win X. Balcavage; B. R. Ramachandran; Anthony L. Shrout

1998-01-01

239

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

|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,…

Glover, Jim

2006-01-01

240

Spotted-dick, a zinc-finger protein of Drosophila required for expression of Orc4 and S phase.  

PubMed

The highly condensed chromosomes and chromosome breaks in mitotic cells of a Drosophila mutant, spotted-dick/pita, are the consequence of defects in DNA replication. Reduction of levels of Spotted-dick protein, by either RNAi or mutation, leads to the accumulation of cells that have DNA content intermediate to 2N and 4N in proliferating tissues and also compromises endoreduplication in larval salivary glands. The Spotted-dick Zinc-finger protein is present in the nuclei of cells committed to proliferation but necessary in cells undertaking S phase. We show that Spotted-dick/Pita functions as a transcription factor and that, in cultured S2 cells, it is an activator of expression of some 30 genes that include the Orc4 gene, required for initiation of DNA replication. Chromatin immunoprecipitation indicates that it associates with the genes that it activates in S2 cells together with other sites that could represent genes activated in other tissues. We discuss the role of Spotted-dick in the coordination of cellular growth and DNA replication. PMID:16369566

Page, Andrew R; Kovacs, Andras; Deak, Peter; Torok, Tibor; Kiss, Istvan; Dario, Paulo; Bastos, Cristina; Batista, Pedro; Gomes, Rui; Ohkura, Hiro; Russell, Steven; Glover, David M

2005-11-24

241

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

SciTech Connect

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.

Prieto, J. L.; Lee, J. C. [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Drake, A. J.; Djorgovski, S. G. [California Institute of Technology, 1200 E. California Blvd., CA 91225 (United States); McNaught, R.; Garradd, G. [Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT 2611 (Australia); Beacom, J. F. [Department of Physics, The Ohio State University, 191 W. Woodruff Ave., Columbus, OH 43210 (United States); Beshore, E. [Department of Planetary Sciences, Lunar and Planetary Laboratory, The University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721 (United States); Catelan, M. [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackena 4860, 782-0436 Macul, Santiago (Chile); Pojmanski, G. [Warsaw University Astronomical Observatory, Al. Ujazdowskie 4, 00-478 Warsaw (Poland); Stanek, K. Z.; Szczygiel, D. M. [Department of Astronomy, The Ohio State University, 140 W. 18th Ave., Columbus, OH 43210 (United States)

2012-01-20

242

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

NASA Astrophysics Data System (ADS)

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 H? 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 H? images and find that the supernova occurred in a large star formation complex. The morphology of the H? emission appears as a large shell (R ~= 350 pc) surrounding the FUV and optical emission. Using the H?-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 H? 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.

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.; Szczygie?, D. M.

2012-01-01

243

“Have you understood anything I’ve said?”: The Dick Cavett Show, Jimi Hendrix, and the framing of the black counterculture in 1969  

Microsoft Academic Search

This article examines the role of Jimi Hendrix in the late 1960s as a vessel of the Black Atlantic, what Paul Gilroy describes as the counterculture to modernity. Placed against the backdrop of The Dick Cavett Show, a newly created talk show in 1969 hosted by the white liberal Dick Cavett, this article explores the dialogue between host and guitarist

Daniel R. McClure

2012-01-01

244

Integrability and superintegrability of the generalized n-level many-mode Jaynes-Cummings and Dicke models  

SciTech Connect

We analyze symmetries of the integrable generalizations of Jaynes-Cummings and Dicke models associated with simple Lie algebras g and their reductive subalgebras g{sub K}[T. Skrypnyk, 'Generalized n-level Jaynes-Cummings and Dicke models, classical rational r-matrices and nested Bethe ansatz', J. Phys. A: Math. Theor. 41, 475202 (2008)]. We show that their symmetry algebras contain commutative subalgebras isomorphic to the Cartan subalgebras of g, which can be added to the commutative algebras of quantum integrals generated with the help of the quantum Lax operators. We diagonalize additional commuting integrals and constructed with their help the most general integrable quantum Hamiltonian of the generalized n-level many-mode Jaynes-Cummings and Dicke-type models using nested algebraic Bethe ansatz.

Skrypnyk, T. [International School for Advanced Studies, via Beirut 2-4, 34014 Trieste (Italy) and Bogoliubov Institute for Theoretical Physics, Metrologichna st.14-b, Kiev 03143 (Ukraine)

2009-10-15

245

Dynamical System Analysis for Anisotropic Universe in Brans-Dicke Theory  

NASA Astrophysics Data System (ADS)

In this work, we have studied the Brans-Dicke (BD) cosmology in anisotropic models. We present three dimensional dynamical system describing the evolution of anisotropic models containing perfect fluid and BD scalar field with self-interacting potential. The relevant equations have been transformed into the dynamical system. The critical points and the corresponding eigen values have been found in radiation, dust, dark energy, ?CDM and phantom phases of the universe. The natures and the stability around the critical points have also been investigated.

Bhadra, Jhumpa; Chakraborty, Shuvendu; Debnath, Ujjal

2013-09-01

246

Power Law and Logarithmic Entropy Corrected Ricci Dark Energy Models in Brans-Dicke Chameleon Cosmology  

NASA Astrophysics Data System (ADS)

In this work, we study the power-law and the logarithmic entropy corrected versions of the Ricci Dark Energy (RDE) model in the framework of the Brans-Dicke cosmology non-minimally coupled with a chameleon scalar field ?. Considering the presence of interaction between Dark Energy (DE) and Dark Matter (DM), we derived the expressions of some relevant cosmological parameters, i.e. the equation of state parameter ? D , the deceleration parameter q and the evolution of the energy density parameter \\varOmega'D.

Pasqua, Antonio; Assaf, Khudhair A.; Aly, Ayman A.

2013-10-01

247

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

SciTech Connect

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.

Santos, J. P.; Semiao, F. L.; Furuya, K. [Departamento de Fisica, Universidade Estadual de Ponta Grossa, Campus Uvaranas, 84030-900 Ponta Grossa, Parana (Brazil); Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas-UNICAMP, 13083-859, Campinas, SP (Brazil)

2010-12-15

248

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

NASA Astrophysics Data System (ADS)

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.

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

2013-03-01

249

Drude Weight, Cyclotron Resonance, and the Dicke Model of Graphene Cavity QED  

NASA Astrophysics Data System (ADS)

The unique optoelectronic properties of graphene make this two-dimensional material an ideal platform for fundamental studies of cavity quantum electrodynamics in the strong-coupling regime. The celebrated Dicke model of cavity quantum electrodynamics 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. We develop 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.

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

2012-12-01

250

Cosmology in Brans{endash}Dicke theory with a scalar potential  

SciTech Connect

We consider the general behaviour of cosmologies in Brans-Dicke theory where the dilaton is self-interacting via a potential V({Phi}). We show that the general radiation universe is a two-dimensional dynamical system, whereas the dust or false vacuum universe is three-dimensional. This is in contrast to the non-interacting dilaton which has uniformly a two-dimensional phase space. We find the phase spaces in each case and the general behaviour of the cosmologies. {copyright} 1997 Academic Press, Inc.

Santos, C.; Gregory, R. [Centre for Particle Theory, Department of Mathematical Sciences, University of Durham, South Road, Durham DH1 3LE (England)

1997-07-01

251

Constructing stabilized brane world models in five-dimensional Brans Dicke theory  

NASA Astrophysics Data System (ADS)

We consider brane world models, which can be constructed in the five-dimensional Brans Dicke theory with bulk scalar field potentials suggested by the supergravity theory. For different choices of the potentials and parameters, we get (i) an unstabilized model with the Randall Sundrum solution for the metric and constant solution for the scalar field; (ii) models with a flat background and tension-full branes; (iii) stabilized brane world models, one of which reproduces the Randall Sundrum solution for the metric and gives an exponential solution for the scalar field. We also discuss the relationship between solutions in different frames, with non-minimal and minimal couplings of the scalar field.

Mikhailov, Alexey S.; Mikhailov, Yuri S.; Smolyakov, Mikhail N.; Volobuev, Igor P.

2007-01-01

252

Evolution of Primordial Black Hole Mass Spectrum in Brans-Dicke Theory  

NASA Astrophysics Data System (ADS)

We investigate the evolution of primordial black hole mass spectrum by including both accretion of radiation and Hawking evaporation within Brans-Dicke (BD) cosmology in radiation-, matter- and vacuum-dominated eras. We also consider the effect of evaporation of primordial black holes on the expansion dynamics of the universe. The analytic solutions describing the energy density of the black holes in equilibrium with radiation are presented. We demonstrate that these solutions act as attractors for the system ensuring stability for both linear and nonlinear situations. We show, however, that inclusion of accretion of radiation delays the onset of this equilibrium in all radiation-, matter- and vacuum-dominated eras.

Dwivedee, D.; Nayak, B.; Singh, L. P.

2013-04-01

253

PPN parameter {gamma} and solar system constraints of massive Brans-Dicke theories  

SciTech Connect

Previous solar system constraints of the Brans-Dicke (BD) parameter {omega} have either ignored the effects of the scalar field potential (mass terms) or assumed a highly massive scalar field. Here, we interpolate between the above two assumptions and derive the solar system constraints on the BD parameter {omega} for any field mass. We show that for {omega}=O(1) the solar system constraints relax for a field mass m > or approx. 20xm{sub AU}=20x10{sup -27} GeV.

Perivolaropoulos, L. [Department of Physics, University of Ioannina (Greece)

2010-02-15

254

Exact Brans-Dicke-Bianchi type-VII(h) perfect fluid solutions  

NASA Astrophysics Data System (ADS)

Exact perfect fluid solutions are obtained for the Brans-Dicke-Bianchi type VII(h) model (Ryan and Shapley, 1975). The rescaled method of Chauvet and Guzman (1986) is used under the assumption of locally rotational symmetry. For the stiff matter case, a singularity is found for t = 0 and the solution is different than that obtained by Lorentz-Petzold (1984). Exact cosmological solutions for an arbitrary barotropic perfect fluid are found by the introduction of a power law for the cosmic scale functions Ri = R sub i(t).

Guzman, E.

1989-02-01

255

Controlled Dicke subradiance from a large cloud of two-level systems.  

PubMed

Dicke superradiance has been observed in many systems and is based on constructive interferences between many scattered waves. The counterpart of this enhanced dynamics, subradiance, is a destructive interference effect leading to the partial trapping of light in the system. In contrast to the robust superradiance, subradiant states are fragile, and spurious decoherence phenomena hitherto obstructed the observation of such metastable states. We show that a dilute cloud of cold atoms is an ideal system to look for subradiance in free space and study various mechanisms to control this subradiance. PMID:22540580

Bienaimé, Tom; Piovella, Nicola; Kaiser, Robin

2012-03-23

256

Henri Étienne Sainte-Claire Deville: A physician turned metallurgist  

NASA Astrophysics Data System (ADS)

Henri Étienne Sainte-Claire Deville (1818-1881) is well known for his work on metallurgy, on the separation and preparation of many metals on a large scale and in a very pure state, and developing the concepts and principles of the dissociation of gases. He was the first to prepare N2O5 in crystalline state and to develop an inexpensive process for the industrial manufacture of sodium and aluminum. Among the many metals he separated susccessfully are silicon, magnesium, platinum, iridium, osmium, manganese, and chromium. His development of the platinum-iridium alloy led to its adoption for manufacturing the meter and kilogram standards.

Wisniak, Jaime

2004-04-01

257

Henry Charlton Bastian (1837-1915): neglected neurologist and scientist.  

PubMed

Henry Charlton Bastian was born in Truro, Cornwall. He graduated in 1861 at the University College, London, where he worked most of his life. He was one of the first neurologists appointed to the National Hospital, Queen Square. There, he conducted original investigations and pursued wide interests both in medical and biological sciences. He was elected a Fellow of the Royal Society in 1868. In addition to his reputation as a neurological diagnostician and intellectual, he became an advocate of the vexed doctrine of abiogenesis. PMID:20093838

Pearce, J M S

2010-01-05

258

Several chromones from the stems of Polygonum aubertii Henry.  

PubMed

Two new 2-alkylchromanones, 2-tricosyl-2,5,7-trihydroxy-chromanone (6) and 2-pentacosyl-2,5,7-trihydroxy-chromanone (7), together with five known 2-alkylated chromones and chromanones (1-5), were isolated from the stems of Polygonum aubertii Henry. The structures of these compounds were established by spectroscopic methods including extensive 1D, 2D NMR ((1)H-(1)H COSY, HSQC, and HMBC), and HR-ESI-MS techniques. In addition, a plausible biosynthetic pathway for these compounds is described. PMID:20628943

Zhao, Ya-Min; Qi, Huan-Yang; Shi, Yan-Ping

2010-07-01

259

Henry's law constant and hydrolysis of peroxyacetyl nitrate (PAN)  

Microsoft Academic Search

The effect of temperature on the solubility of PAN and on its hydrolysis rate in near-neutral and slightly acidic water were studied in a bubble column apparatus. The results obtained are a Henry's law coefficient H=10-9.04±0.6 exp[(6513±376)\\/T] M atm-1, and a first-order hydrolysis rate constant k=106.60±1.0 exp[(-6612±662)\\/T] s-1, which was independent of pH in the range 3.2=pH=6.7. The products formed

Jost Kames; Silke Schweighoefer; Ulrich Schurath

1991-01-01

260

Titanium Dioxide (TiO2) Nanoparticles Induce JB6 Cell Apoptosis Through Activation of the Caspase8\\/Bid and Mitochondrial Pathways  

Microsoft Academic Search

Titanium dioxide (TiO2), a commercially important material, is used in a wide variety of products. Although TiO2 is generally regarded as nontoxic, the cytotoxicity, pathogenicity, and carcinogenicity of TiO2 nanoparticles have been recently recognized. The present study investigated TiO2 nanoparticle-induced cell apoptosis and molecular mechanisms involved in this process in a mouse epidermal (JB6) cell line. Using the 3-(4,5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium

Jinshun Zhao; Linda Bowman; Xingdong Zhang; Val Vallyathan; Shih-Houng Young; Vincent Castranova; Min Ding

2009-01-01

261

Production of Fullerenes from Plant Materials and used Carbon Materials by Means of a Chip-Injection-Type J×B Arc Reactor  

Microsoft Academic Search

By using a chip-injection-type J×B arc reactor, carbon material chips of, for example, charcoal, activated carbon, sumi (Chinese ink stick), synthetic rubber and carbon black are well arc-sublimated in He gas and fullerenes are successfully produced from these materials. From the viewpoints of effective use of plant resources, recycling of used carbon materials and environmental low-emission technology, the utilization of

Tetsu Mieno

2000-01-01

262

Enhancing mitochondrial respiration suppresses tumor promoter TPA-induced PKM2 expression and cell transformation in skin epidermal JB6 cells.  

PubMed

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

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

2011-06-14

263

ADDENDUM I : HENRYS LAW CONSTANTS OF OH AND HO2.  

SciTech Connect

The Henry's law type constants of OH and HO{sub 2} have not been experimentally determined for obvious reasons: it is extremely difficult to measure the concentrations of these reactive species in either the gas phase or the aqueous phase, let alone simultaneously in both phases. At a more fundamental level, because these radicals react rapidly in both phases, compared with mass-transfer rates characterizing typical laboratory multi-phase systems, the gas-liquid equilibrium which is necessary for such measurements to be feasible is typically not attainable. Consequently, the Henry's law constants of these radicals are traditionally evaluated from the free energy of solution, {Delta}{sub sol}G{sup 0}(X) accompanying the process of transferring a molecule X from the gas phase, denoted g, to the aqueous phase, a, i.e. X{sub g} {rightleftharpoons} X{sub a} (9.10); using the equation {Delta}{sub sol}G{sup o}(X) = -RT ln k{sub H} (9.11); {Delta}{sub sol}G{sup o}(X) is defined as {Delta}{sub sol}G{sup o}(X) = {Delta}{sub f}G{sup o}(X){sub a} - {Delta}{sub f}G{sup o}(X){sub g} (9.12) where the free energies of formation of X in the gas phase and in the aqueous phase are typically evaluated using thermochemical cycles.

LEE,Y.N.

2003-05-23

264

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

NASA Astrophysics Data System (ADS)

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.

Stevens, Kenneth N.

2003-04-01

265

Spherically symmetric thin shells in Brans-Dicke theory of gravity  

SciTech Connect

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.

Letelier, P.S.; Wang, A. (Departamento de Matematica Aplicada, Instituto de Matematica Estatistica e Ciencia da Computacao, Universidade Estadual de Campinas, 13081-970 Campinas, Sao Paulo (Brazil))

1993-07-15

266

Interacting new agegraphic dark energy in nonflat Brans-Dicke cosmology  

SciTech Connect

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.

Sheykhi, Ahmad [Department of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha (Iran, Islamic Republic of)

2010-01-15

267

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

NASA Astrophysics Data System (ADS)

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.

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

2012-12-01

268

Qualitative analysis of Brans-Dicke universes with a cosmological constant  

SciTech Connect

Solutions to flat space Friedmann-Robertson-Walker cosmologies in Brans-Dicke theory with a cosmological constant are investigated. The matter is modeled as a {gamma}-law perfect fluid. The field equations are reduced from fourth order to second order through a change of variables, and the resulting two-dimensional system is analyzed using dynamical system theory. When the Brans-Dicke coupling constant is positive ({omega}>0), all initially expanding models approach exponential expansion at late times, regardless of the type of matter present. If ({omega} < 0), then a wide variety of qualitatively distinct models are present, including nonsingular {open_quotes}bounce{close_quotes} universes, {open_quotes}vacillating{close_quotes} universes, and, in the special case of {omega} = -1, models which approach stable Minkowski spacetime with an exponentially increasing scalar field at late times. Since power-law solutions do not exist, none of the models appears to offer any advantage over the standard deSitter solution of general relativity in achieving a graceful exit from inflation. 17 refs., 4 figs., 2 tabs.

Kolitch, S.J. [Univ. of California, Santa Barbara, CA (United States)

1996-02-25

269

Vapour pressures, aqueous solubilities, Henry’s Law constants, and octanol\\/water partition coefficients of a series of mixed halogenated dimethyl bipyrroles  

Microsoft Academic Search

Basic physical–chemical properties of five bromine and chlorine containing mixed halogenated dimethyl bipyrroles (HDBPs) were determined using established methods. Subcooled liquid vapour pressures (PL,25o), aqueous solubilities (Sw,25), and octanol\\/water partition coefficients (Kow) were determined using the gas chromatography-retention time, generator column, and slow-stirring methods, respectively. Henry’s Law constants (H25) were estimated using experimentally-derived PLo and Sw,25 data. Values of all

Sheryl A. Tittlemier; Eric Braekevelt; Thor Halldorson; Christopher M. Reddy; Ross J. Norstrom

2004-01-01

270

Salting-in and salting-out effects of ionic and neutral osmotica on limonene and linalool Henry’s law constants and octanol\\/water partition coefficients  

Microsoft Academic Search

Foliar emission rates of plant-generated volatile monoterpenes depend on monoterpene partitioning between air, aqueous and lipid-phases in the leaves. While Henry’s law constants (Hpc, equilibrium gas\\/water partition coefficient) and octanol\\/water partition coefficients (KOW) for pure water have been previously used to simulate monoterpene emissions from the leaves, aqueous phase in plants is a complex solution of electrolytes and neutral osmotica.

Lucian Copolovici; Ülo Niinemets

2007-01-01

271

Effective Henry's law constants of glyoxal, glyoxylic acid, and glycolic acid  

Microsoft Academic Search

The Henry's law constants of glyoxal, glycolic acid and glyoxylic acid in pure water were determined over the range of 278 and 308 K for the first time by a bubble column technique. These compounds were chosen because of their perceived involvement in the formation of secondary organic aerosol through in-cloud processing pathways. The experimentally determined Henry's law constants are:

H. S. Simon Ip; X. H. Hilda Huang; Jian Zhen Yu

2009-01-01

272

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

National Technical Information Service (NTIS)

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 i...

H. Carwell

1997-01-01

273

Measurement of Henry's law constants for C⁠and Câ chlorinated hydrocarbons  

Microsoft Academic Search

A modification to the EPICS procedure for measuring Henry's constants is proposed, wherein the original assumption of equal solute mass additions to bottle pairs has been eliminated via a gravimetric accounting, resulting in increased precision. The modified procedure was applied to 13 volatile C⁠and Câ chlorinated hydrocarbons at temperatures from 10 to 35°C, representing a range in dimensionless Henry's

James M. Gossett

1987-01-01

274

The Henry Tax Review, Cartel Parties and the Reform Capacity of the Australian State  

Microsoft Academic Search

The Henry Tax Review is a work in progress, but it has already advanced sufficiently to constitute an important case study of state capacity in Australia. Using the Henry Tax Review as a case study, this paper sheds light on the question of whether the national political system is capable of devising and implementing long-term reforms. Whilst specific policy failures

Richard Eccleston; Ian Marsh

2011-01-01

275

Henry David Thoreau and the anti-democratic nature of five American institutions  

Microsoft Academic Search

The perception of Henry David Thoreau held by a number of literary writers and critics is that he does not have anything of substance to offer as a political theorist. In disagreeing with this contention, the purpose of this dissertation is to suggest that Henry David Thoreau is a major contributor to American political thought. To illustrate this theory Thoreau's

Frederick Delbert Balkwill

1999-01-01

276

1787 and 1776: Patrick Henry, James Madison, and the Revolutionary Legitimacy of the Constitution.  

ERIC Educational Resources Information Center

|Discusses Patrick Henry's and James Madison's opinions on how the U.S. Constitution should be constructed. Describes how Henry introduced a set of substantive objections which were shared by Antifederalists throughout the country and persuaded many Revolutionaries that the Constitution was essentially at odds with the principles of 1776. (BSR)|

Banning, Lance

1988-01-01

277

— On the Surprising Endings and Sweet Bitterness of O. Henry' s Short Stories  

Microsoft Academic Search

Although there are a lo t of satirists among famous writers, O. Henry is distinguished by his gentleness and his chivalrous tenderness for the poor. He does well in making surprising but logical endings and mixing sweetness with bitterness in his short stories. This paper is to set a high value on O. Henry and bestow on him \\

LINGHU Rong

2006-01-01

278

Alkyl nitrates and bifunctional nitrates of atmospheric interest: Henry's law constants and their temperature dependencies  

Microsoft Academic Search

Henry's law coefficients of 15 alkyl nitrates, keto-, hydroxy-, and dinitrates of atmospheric interest have been measured, mostly over the temperature range 1–25°C. The compounds are stable in aqueous solution. Where literature data were available, Henry's law coefficients are in very good agreement. It is concluded that dissolution in cloud and rain water is not an important loss process for

Jost Kames; Ulrich Schurath

1992-01-01

279

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

Federal Register 2010, 2011, 2012, 2013

...Impact Statement for the Henrys Fork Salinity Control Project Plan, Sweetwater and...Statement (EIS) for the Henrys Fork Salinity Control Project Plan (SCPP). The NRCS...Improvements'' alternative assumes a salinity control project will be...

2011-08-12

280

Quantum logic operation with a single trapped ion using the nonlinear interaction beyond the Lamb-Dicke limit  

Microsoft Academic Search

Using the nonlinear interaction between internal and external degrees of a trapped ion assisted by a laser beam, we present simplified methods for two-qubit quantum logic operation. The nonlinear interaction arises when the Lamb-Dicke parameter is not small enough. Two special cases, one with the laser tuned to the first red sideband and the other tuned to the carrier, are

L. X. Li; G. C. Guo

2000-01-01

281

Generalizations of the Kerr-Newman and charged Tomimatsu-Sato metrics in the Jordan-Brans-Dicke theory  

NASA Astrophysics Data System (ADS)

A procedure to construct stationary axisymmetric solutions of the Jordan-Brans-Dicke field equations with electromagnetic sources is obtained solutions, since they are “compositions” of Weyl static solutions with the given stationary ones, are equipped with several parameters, as many as one wishes.

García, Alberto D.; Mitskiévi?, N. V.

1989-11-01

282

Reason, revelation and reform: Thomas Dick of Methven and the ‘Improvement of Society by the Diffusion of Knowledge‘  

Microsoft Academic Search

I. [A] host of new educational devices ranging from lantern lectures to the Mechanics’ Institutes set up in many towns propagated the ideology essential to the creation of that new and viable class society which was progressively ousting the old aristocratic ethos. Thomas Dick of Methven, Secession clergyman, popular author, pioneer of Mechanics’ Institutes, saint and astronomer, summed up in

J. V. Smith

1983-01-01

283

Constraints on Brans-Dicke cosmology with a varying {lambda} term due to the big-bang nucleosynthesis and WMAP  

SciTech Connect

We investigate the big-bang nucleosynthesis (BBN) in a Brans-Dicke model with a varying {lambda} term. We find that the cosmic expansion rate differs appreciably from that of the Friedmann model during the BBN epoch . The produced abundances of 4He, D, and 7Li are consistent with both the observed ones and the baryon density obtained from WMAP.

Nakamura, Riou; Hashimoto, Masa-aki [Department of Physics, Kyushu University, Fukuoka 810-8560 (Japan); Arai, Kenzo [Department of Physics, Kumamoto University, Kumamoto 860-8555 (Japan)

2006-07-12

284

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

PubMed

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. © 2012 Wiley Periodicals, Inc. PMID:23255458

Li, Wenjuan; Liu, Joan; Zhao, Yunfeng

2012-12-19

285

The Henry's Law Constants of the Haloacetic Acids  

Microsoft Academic Search

Henry's law constants K'H (mol kg-1 atm-1) have been measured between 278.15 K and 308.15 K for the following organic acids: CH2FCOOH (ln(K'H[298.15 K]) = 11.3 ± 0.2), CH2ClCOOH (11.59 ± 0.14), CH2BrCOOH (11.94 ± 0.21), CHF2COOH (10.32 ± 0.10), CHCl2COOH (11.69 ± 0.11), CHBr2COOH (12.33 ± 0.29), CBr3COOH (12.61 ± 0.21), and CClF2COOH (10.11 ± 0.12). The variation of

D. J. Bowden; S. L. Clegg; P. Brimblecombe

1998-01-01

286

Scientific Biography of Henri Bénard (1874-1939)  

NASA Astrophysics Data System (ADS)

Henri Claude Bénard 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. Bénard (1851-1884) and Hélène M. Mangeant (1837-1901) [1-3]. His father was a small investor, who died very young. H. Bénard finished elementary school in the district of Lisieux and in Caen, nearby his birthplace, and moved to Paris to continue his studies at the Lycée 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 Supérieure 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].

Wesfreid, José Eduardo

287

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

NASA Astrophysics Data System (ADS)

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).

Compernolle, S.; Müller, J.-F.

2013-09-01

288

Emily Dickinson's Ophthalmic Consultation With Henry Willard Williams, MD.  

PubMed

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

Blanchard, Donald L

2012-12-01

289

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

SciTech Connect

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.

Dehghani, M. H. [Physics Department and Biruni Observatory, College of Sciences, Shiraz University, Shiraz 71454 (Iran, Islamic Republic of); Research Institute for Astrophysics and Astronomy of Maragha (RIAAM), Maragha (Iran, Islamic Republic of); Pakravan, J.; Hendi, S. H. [Physics Department and Biruni Observatory, College of Sciences, Shiraz University, Shiraz 71454 (Iran, Islamic Republic of)

2006-11-15

290

Subradiant hybrid states in the open 3D Anderson-Dicke model  

NASA Astrophysics Data System (ADS)

Anderson localization is a paradigmatic coherence effect in disordered systems, often analyzed in the absence of dissipation. Here we consider the case of coherent dissipation, occurring for open system with coupling to a common decay channel. This dissipation induces cooperative Dicke super- and subradiance and an effective long-range hopping, expected to destroy Anderson localization. We are thus in the presence of two competing effects, i.e. localization driven by disorder and delocalization driven by dissipative opening. Here we demonstrate the existence of a subradiant hybrid regime, emerging from the interplay of opening and disorder, in which subradiant states are hybrid with both features of localized and extended states, while superradiant states are extended. We also provide analytical predictions for this regime, confirmed by numerical simulations.

Biella, A.; Borgonovi, F.; Kaiser, R.; Celardo, G. L.

2013-09-01

291

Bianchi type-III bulk viscous string cosmological model in Brans-Dicke theory of gravitation  

NASA Astrophysics Data System (ADS)

A spatially homogeneous and anisotropic Bianchi type-III space-time is considered in the framework of a scalar-tensor theory of gravitation proposed by Brans and Dicke (Phys. Rev. 124:925, 1961) in the presence of bulk viscous fluid containing one dimensional cosmic strings. We have found a determinate solution of the field equations using the plausible physical conditions (i) a barotropic equation state for the pressure and density, (ii) special law of variation for Hubble's parameter proposed by Berman (Nuovo Cimento B74:182, 1983), (iii) shear scalar is proportional to scalar expansion and (iv) the trace of the energy tensor of the fluid vanishes. We have also assumed that bulk viscous pressure is proportional to energy density. Some physical and kinematical properties of the model are, also, discussed.

Vidya Sagar, T.; Purnachandra Rao, C.; Bhuvana Vijaya, R.; Reddy, D. R. K.

2013-10-01

292

Interacting Ricci Logarithmic Entropy-Corrected Holographic Dark Energy in Brans-Dicke Cosmology  

NASA Astrophysics Data System (ADS)

In the derivation of Holographic Dark Energy (HDE), the area law of the black hole entropy assumes a crucial role. However, the entropy-area relation can be modified including some quantum effects, motivated from the Loop Quantum Gravity (LQG), string theory and black hole physics. In this paper, we study the cosmological implications of the interacting logarithmic entropy-corrected HDE (LECHDE) model in the framework of Brans-Dicke (BD) cosmology. As system's infrared (IR) cut-off, we choose the average radius of Ricci scalar curvature, i.e. R -1/2. We obtain the Equation of State (EoS) parameter ? D , the deceleration parameter q and the evolution of energy density parameter of our model in a non-flat universe. Moreover, we study the limiting cases corresponding to our model without corrections and to the Einstein's gravity.

Pasqua, Antonio; Khomenko, Iuliia

2013-11-01

293

No singularities in observables at the phase transition in the Dicke model  

SciTech Connect

The Dicke Hamiltonian describes the simplest quantum system with atoms interacting with photons: N two-level atoms inside a perfectly reflecting cavity, which allows only one electromagnetic mode. It has also been successfully employed to describe superconducting circuits that behave as artificial atoms coupled to a resonator. The system exhibits a transition to a superradiant phase at zero temperature. When the interaction strength reaches its critical value, both the number of photons and atoms in excited states in the cavity, together with their fluctuations, exhibit a sudden increase from zero. By employing symmetry-adapted coherent states, it is shown that these properties scale with the number of atoms, their reported divergences at the critical point represent the limit when this number goes to infinity, and, in this limit, they remain divergent in the superradiant phase. Analytical expressions are presented for all observables of interest, for any number of atoms. Comparisons with exact numerical solutions strongly support the results.

Castanos, O.; Nahmad-Achar, E.; Lopez-Pena, R.; Hirsch, J. G. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico D. F., C.P. 04510 (Mexico)

2011-05-15

294

Polaritons in Organic Microcavities: The Effect of Phonons on the Dicke Model  

NASA Astrophysics Data System (ADS)

We study the effect of vibrational excitations on the condensation of polaritons. Recently, a lot of attention has been focused on microcavities based on organic semiconducting materials since, unlike their inorganic counterpart, they provide a suitable environment for the formation of a room temperature Bose-Einstein condensate. In order to model such materials we add terms to the usual Dicke Hamiltonian to account for the coupling of each two-level system to vibrational excitations (phonons). A mean field treatment, at zero temperature, gives us insights into the phase diagram of the Hamiltonian. In particular, we discuss the origin of the first order phase transition between two superradiant states which occurs as the coupling between the phonons and two-level systems is varied. An extension of the mean field treatment leads to the discussion of the equilibrium luminescence spectrum in the presence of phonons. We also present the way in which these results are modified at finite temperature.

Cwik, Justyna; Keeling, Jonathan

2013-03-01

295

Henry`s law solubilities and Setchenow coefficients for biogenic reduced sulfur species obtained from gas-liquid uptake measurements  

SciTech Connect

Biogenically produced reduced sulfur compounds, including dimethylsulfide (DMS, CH{sub 3}SCH{sub 3}), hydrogen sulfide (H{sub 2}S), carbon disulfide (CS{sub 2}), methyl mercaptan (CH{sub 3}SH), and carbonyl sulfide (OCS), are a major source of sulfur in the marine atmosphere. This source is estimated to contribute 25-40% of global sulfur emissions. These species and their oxidation products, dimethyl sulfoxide (DMSO), dimethyl sulfone (DMSO{sub 2}), and methane sulfonic acid (MSA), dominate the production of aerosol and cloud condensation nuclei (CCN) in the clean marine atmosphere. The multiphase chemical processes for these species must be understood in order to study the evolving role of combustion-produced sulfur oxides over the oceans. Using a newly developed bubble column apparatus, a series of aqueous phase uptake studies have been completed for the reduced sulfur species DMS, H{sub 2}S, CS{sub 2}, CH{sub 3}SH, and OCS. Aqueous phase uptake has been studied as a function of temperature (278-298 K), pH (1-14), H{sub 2}O{sub 2} concentration (0-1 M), NaCl concentration (0-5 M), and (NH{sub 4}){sub 2}SO{sub 4} concentration (0-4 M). The Henry`s law coefficients for CH{sub 3}SH and CS{sub 2} were determined for the first time, as were the Setchenow coefficients for all the species studied. 33 refs., 8 figs., 2 tabs.

De Bruyn, W.J.; Swartz, E.; Hu, J.H. [Boston College, Chestnut Hill, MA (United States)] [and others

1995-04-20

296

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

SciTech Connect

Using the covariant formalism developed in a companion paper [F.-Q. Wu, L. E. Qiang, X. Wang, and X. Chen, preceding Article, Phys. Rev. D 82, 083002 (2010)] (paper I), we derive observational constraints on the Brans-Dicke model in a flat Friedmann-Lemaitre-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 {omega} with a new parameter {zeta}=ln(1/{omega}+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 {zeta} or {omega}, but negative {zeta} or {omega} could not be constrained effectively. However, with additional large scale structure data, one could break the degeneracy at {zeta}<0. The 2{sigma} (95.5%) bound on {zeta} is -0.008 37<{zeta}<0.010 18 (corresponding to {omega}<-120.0 or {omega}>97.8). We also obtained constraints on G/G, the rate of change of G at present, as -1.75x10{sup -12} yr{sup -1}

Wu Fengquan; Chen Xuelei [National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012 (China)

2010-10-15

297

Ethanol potentiates the stimulatory effects of insulin and phosphocholine on mitogenesis by a zinc-dependent and rapamycin-sensitive mechanism in fibroblasts and JB6 cells.  

PubMed Central

In most cellular systems ethanol inhibits growth factor-induced cell growth. Here we examined the effects of ethanol on DNA synthesis and cell proliferation induced by insulin and phosphocholine (PCho) in NIH3T3 fibroblasts, Swiss 3T3 fibroblasts and mouse epidermal JB6 cells. In serum-starved low (12-18) passage NIH3T3 fibroblasts, 60 mM ethanol enhanced the mitogenic effect of insulin in the absence or presence of 25 microM zinc about 2- or 12-fold, respectively. In contrast, in serum-starved high (30-47) passage NIH3T3 cells 60 mM ethanol had large (20-40-fold) potentiating effects on insulin-induced DNA synthesis even in the absence of zinc. Furthermore, ethanol also enhanced the effects of PCho on DNA synthesis in both the absence and presence of insulin. The potentiating effects of ethanol on insulin- and PCho-induced DNA synthesis were associated with 1.2-1.3-fold stimulation of cell proliferation. Rapamycin, an inhibitor of p70 S6 kinase action, strongly inhibited the potentiating effects of ethanol on insulin- and PCho-induced mitogenesis. Unexpectedly, ethanol inhibited synergistic activation of p42/p44 mitogen-activated protein kinases by insulin and PCho. In both Swiss 3T3 and JB6 cells, ethanol potentiated insulin-induced DNA synthesis only in the presence of zinc. In these cells, ethanol also increased the effects of PCho on both DNA synthesis and cell proliferation in the co-presence of either insulin or ATP. The results indicate that in various cell lines physiologically relevant concentrations of ethanol can increase the ability of insulin and PCho to induce DNA synthesis and, to smaller extents, cell proliferation. In low passage NIH3T3 cells as well as in Swiss 3T3 and JB6 cells potentiation of insulin-induced DNA synthesis by ethanol requires the presence of zinc.

Kiss, Z; Anderson, W H; Mukherjee, J J

1998-01-01

298

Induction of miR-21-PDCD4 signaling by tungsten carbide-cobalt nanoparticles in JB6 cells involves ROS-mediated MAPK pathways.  

PubMed

Tungsten carbide-cobalt (WC-Co) nanoparticle composites have wide applications because of their hardness and toughness. WC-Co was classified as "probably carcinogenic" to humans by the International Agency for Research on Cancer (IARC) in 2003. It is believed that the toxicity and carcinogenesis of WC-Co is associated with particle size. Recent studies demonstrated that the tumor suppressor gene programmed cell death 4 (PDCD4) and its upstream regulator miR-21 have been considered as oncogenes for novel cancer prevention or anticancer therapies. The present study examined the effects of WC-Co nanoparticles on miR-21-PDCD4 signaling in a mouse epidermal cell line (JB6 P+). The results showed that (i) exposure of JB6 cells to WC-Co stimulated a increase of miR-21 generation; (ii) WC-Co also caused inhibition of PDCD4, a tumor suppressor protein and downstream target of miR-21, expression in JB6 cells; (iii) inhibition of ERKs with ERK inhibitor U0126 significantly reversed WC-Cominus;induced PDCD4 inhibition, but inhibition of p38 with p38 inhibitor SB203580 did not; and (iv) ROS scavengers, N-acetyl-L-cysteine and catalase, blocked the inhibitory effect of WC-Co on PDCD4 expression, while superoxide dismutase promoted the inhibitory effect. These findings demonstrate that WC-Co nanoparticles induce miR-21 generation, but inhibit PDCD4 production, which may be mediated through ROS, especially endogenous H2O2, and ERK pathways. Unraveling the complex mechanisms associated with these events may provide insights into the initiation and progression of WC-Co-induced carcinogenesis. PMID:23758151

Hou, Lichao; Bowman, Linda; Meighan, Terence G; Shi, Xianglin; Ding, Min

2013-01-01

299

Multidisciplinary medical identification of a French king’s head (Henri IV)  

Microsoft Academic Search

Philippe Charlier and a multidisciplinary team explain how they confirmed an embalmed head to be that of the French king Henry IV using a combination of anthropological, paleopathological, radiological, forensic, and genetic techniques

Philippe Charlier; Isabelle Huynh-Charlier; Joël Poupon; Christine Keyser; Eloïse Lancelot; Dominique Favier; Jean-Noël Vignal; Philippe Sorel; Pierre F Chaillot; Rosa Boano; Renato Grilletto; Sylvaine Delacourte; Jean-Michel Duriez; Yves Loublier; Paola Campos; Eske Willerslev; M T P Gilbert; Leslie Eisenberg; Bertrand Ludes; Geoffroy Lorin de la Grandmaison

2010-01-01

300

24. Photocopy of original plans by Henry Siter, c.1896 (original ...  

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

24. Photocopy of original plans by Henry Siter, c.1896 (original in possession of Cincinnati Board of Education, to be conveyed to the Cincinnati Historical Society) LONGITUDINAL SECTION OF 1897 ADDITION - Columbian School, 3415 Harvey Avenue, Cincinnati, Hamilton County, OH

301

23. Photocopy of original plans by Henry Siter, c.1896 (original ...  

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

23. Photocopy of original plans by Henry Siter, c.1896 (original in possession of Cincinnati Board of Education, to be conveyed to the Cincinnati Historical Society) EAST ELEVATION OF 1897 ADDITION - Columbian School, 3415 Harvey Avenue, Cincinnati, Hamilton County, OH

302

Stationary axially symmetric exterior solutions in the five-dimensional representation of the Brans-Dicke-Jordan theory of gravitation  

NASA Astrophysics Data System (ADS)

The inverse scattering method of Belinsky and Zakharov is used to investigate axially symmetric stationary vacuum soliton solutions in the five-dimensional representation of the Brans-Dicke-Jordan theory of gravitation, where the scalar field of the theory is an element of a five-dimensional metric. The resulting equations for the spacetime metric are similar to those of solitons in general relativity, while the scalar field generated is the product of a simple function of the coordinates and an already known scalar field solution. A family of solutions is considered that reduce, in the absence of rotation, to the five-dimensional form of a well-known Weyl-Levi Civita axially symmetric static vacuum solution. With a suitable choice of parameters, this static limit becomes equivalent to the spherically symmetric solution of the Brans-Dicke theory. An exact metric, in which the Kerr-scalar McIntosh solution is a special case, is given explicitly.

Bruckman, William

1986-11-01

303

Measurement of Henry's law constant as function of temperature and salinity for the low temperature range  

Microsoft Academic Search

EPICS technique (Equilibrium Partitioning In Closed Systems) was further developed to study the gas-water equilibrium partitioning (Henry's law) of C1 and C2 organochlorines and monocyclic aromatic hydrocarbons in the low temperature range. Using this technique Henry's law constant was measured for 13 volatile organic compounds (VOCs) at the temperature range from 2 up to 25°C, and for salt concentrations from

Jo Dewulf; David Drijvers; Herman Van Langenhove

1995-01-01

304

Upper limb and grasp rehabilitation and evaluation of stroke patients using HenRiE device  

Microsoft Academic Search

This paper presents a case study with a HenRiE (Haptic environment for reaching and grasping exercises) device with two hemiparetic subjects. The HenRiE device is intended for use in a robot-aided neurorehabilitation for training of reaching and grasping in haptic environments. The goal of the study is to develop a single system that retrains both hand grasping and releasing movements

Janez Podobnik; Matja Mihelj; Marko Munih

2009-01-01

305

Henry's law coefficient measurements. application of a rotating wetted wall reactor and molecular beam mass spectrometer.  

NASA Astrophysics Data System (ADS)

This work focuses on the measurement of Henry's Law constant of some oxygenated organic compounds of atmospheric interest. The Henry's Law constant for acetone, methyl ethyl ketone (MEK), isobutyraldehyde and 2,3-butandione are reported as a function of temperature ranging from 274 - 293 K. One of the aims of this research is to evaluate the atmospheric fate of oxygenated species that are increasingly used as replacement solvents.

Strekowski, R.; George, C.

2003-04-01

306

Harold Varmus Awarded Henry G. Friesen International Prize in Health Research  

Cancer.gov

Harold Varmus was awarded the 2008 Henry G. Friesen International Prize in Health Research on September 24 in Toronto. Henry Friesen is a Canadian endocrinologist credited with the discovery of human prolactin. The prize, established in 2005, acknowledges Dr. Friesen's achievements in health research and health research policy. This year's award recognized Dr. Varmus' leadership and innovative contributions to medical research and his promotion of science over four decades.

307

Anglo-Norman Historiography and Henry of Huntingdon's Translation of The Battle of Brunanburh  

Microsoft Academic Search

This article examines the poetic and philological methods Anglo-Norman historian Henry of Huntingdon uses to translate into Latin the Old English Battle of Brunanburh (Historia Anglorum [ca 1123–54]). It finds that, although Henry makes a good-faith effort to render the text accurately, his choices and occasional errors reflect his sensibilities as an historian and his orientation toward providential historiography. The

Kenneth Tiller

2012-01-01

308

Solving the flatness and quasi-flatness problems in Brans-Dicke cosmologies with a varying light speed  

Microsoft Academic Search

We define the flatness and quasi-flatness problems in cosmological models. We seek solutions to both problems in homogeneous and isotropic Brans-Dicke cosmologies with a varying speed of light. We formulate this theory and find perturbative, non-perturbative and asymptotic solutions using both numerical and analytical methods. For a particular range of variations of the speed of light the flatness problem can

John D. Barrow; João Magueijo

1999-01-01

309

Dicke superrradiance in a biphenyl crystal doped withpyrene molecules and the possibility of this phenomenon in thegamma range  

NASA Astrophysics Data System (ADS)

Dicke superradiance (DSR) is observed in a molecular mixed crystal, byphenyl with pyrene (wavelength: 373.9 nm; T=1.5-4.2 K). Characteristics of DSR under broad-band and narrow-band excitations are studied. The influence of phonons on the DSR appearance is investigated and the pseudo-localized phonon parameters are established. Two-frequencies DSR and superradiance within a cavity are also observed. The possibility of DSR observation in the gamma range is analyzed.

Samartsev, V. V.

1997-05-01

310

Comparison of Areal-Recharge and Regional-Flux Driven Henry Problems  

NASA Astrophysics Data System (ADS)

The intrusion of saltwater into a groundwater aquifer is one of the most important water resource issues in coastal areas. A small fraction of the intruded salt can increase salinity levels in the extracted drinking water from an impacted aquifer. Therefore, the location of the interface between the freshwater and saltwater, commonly known as the saltwater wedge, should be carefully predicted in coastal areas to avoid an unexpected contamination of the drinking water. Numerical models provide more realistic predictions near the coastal area if it considers the effects of the density contrast between salt and fresh waters. These models are often validated by solving standard problems, such as the Henry problem, which is the most common benchmark used for testing density-coupled models. The Henry problem only considers groundwater introduced into the system from a regional flux boundary. In this study, we consider local recharge boundary condition to introduce groundwater flow into the system. We use the finite difference model SEAWAT to obtain the solution on this recharge-driven Henry problem and compare the results against the traditional Henry problem. Furthermore, laboratory experiments were completed to verify the validity of the numerical simulation results. Both transient and steady-state results for the recharge-driven Henry problem will be compared against flux driven Henry problem data, previously obtained in our laboratory (Simpson and Clement, 2004; Goswami and Clement, 2007; Abarca and Clement, 2009).

Chang, S.; Clement, P.

2009-12-01

311

Organocatalytic asymmetric assembly reactions for the syntheses of carbohydrate derivatives by intermolecular Michael-Henry reactions  

PubMed Central

Given the significance of carbohydrates in life, medicine, and industry, the development of simple and efficient de novo methods to synthesize carbohydrates are highly desirable. Organocatalytic asymmetric assembly reactions are powerful tools to rapidly construct molecules with stereochemical complexity from simple precursors. Here, we present a simple and robust methodology for the asymmetric synthesis of pyranose derivatives with talo- and manno- configurations from simple achiral precursors through organocatalytic asymmetric intermolecular Michael–Henry reaction sequences. In this process, (tert-butyldimethylsilyloxy)acetaldehyde 1 was successfully utilized in two ways: as a donor in a highly selective anti-Michael reaction and as an acceptor in a consecutive Henry reaction. Varied nitroolefins served as Michael acceptors and varied aldehydes substituted for 1 as Henry acceptors providing for the construction of a wide range of carbohydrates with up to 5 stereocenters. In these reactions, a catalyst-controlled Michael reaction followed by a substrate-controlled Henry reaction provided 3,4-dideoxytalose derivatives 6 in a highly stereoselective manner. The Henry reaction was affected by addition of a simple base such as triethylamine: A complex chiral base was not necessary. 3,4-Dideoxymannose derivatives 7 were produced by simply changing the base from triethylamine to 1,8-diazabicyclo[5.4.0]undec-7-ene. Extension of this methodology to a syn-Michael initiated sequence was also successful. A mechanistic discussion is provided to explain the unusual substrate-induced stereoselectivity of the Henry reaction.

Uehara, Hisatoshi; Imashiro, Ritsuo; Hernandez-Torres, Gloria; Barbas, Carlos F.

2010-01-01

312

Induction of miR-21-PDCD4 signaling by UVB in JB6 cells involves ROS-mediated MAPK pathways.  

PubMed

Ultraviolet (UV) irradiation plays a major role in the development of human skin cancer. The present study examined the alterations of miR-21-PDCD4 signaling in a mouse epidermal cell line (JB6 P(+)) post exposure to UVB irradiation. The results showed that (1) UVB caused PDCD4 inhibition in JB6 cells; (2) exposure of cells to UVB caused a significant increase of miR-21, the upstream regulator of PDCD4, expression; (3) both inhibition of ERKs with U0126 and inhibition of p38 with SB203580 significantly reversed UVB-induced PDCD4 inhibition; (4) ROS scavenger, N-acetyl-l-cysteine reversed the inhibitory effect of UVB on PDCD4 expression. The above results suggested that UVB induced PDCD4 inhibition, which may be mediated through ROS, especially endogenous H2O2 and p38 and ERKs phosphorylation. Unraveling the complex mechanisms associated with these events may provide insights into the initiation and progression of UVB-induced carcinogenesis. PMID:23891589

Hou, Lichao; Bowman, Linda; Meighan, Terence G; Pratheeshkumar, Poyil; Shi, Xianglin; Ding, Min

2013-07-26

313

An anisotropic cosmological model in a modified Brans-Dicke theory  

NASA Astrophysics Data System (ADS)

Recently, it has been shown that a four-dimensional (4D) Brans-Dicke (BD) theory with an effective matter field and a self-interacting potential can be achieved from the vacuum 5D BD field equations, where we refer to as a modified Brans-Dicke theory (MBDT). We investigate a generalized Bianchi type I anisotropic cosmology in 5D BD theory, and by employing the obtained formalism, we derive the induced matter on any 4D hypersurface in the context of the MBDT. We illustrate that if the usual spatial scale factors are functions of the time while the scale factor of extra dimension is constant, and the scalar field depends on the time and the fifth coordinate, then, in general, one will encounter inconsistencies in the field equations. Then, we assume that the scale factors and the scalar field depend on the time and the extra coordinate as separated variables in the power-law forms. Hence, we find a few classes of solutions in 5D spacetime through which we probe the one which leads to a generalized Kasner relation among the Kasner parameters. The induced scalar potential is found to be in the power law or in the logarithmic form; however, for a constant scalar field and even when the scalar field only depends on the fifth coordinate, it vanishes. The conservation law is indeed valid in this MBDT approach for the derived induced energy-momentum tensor (EMT). We proceed our investigations for a few cosmological quantities, where for simplicity we assume that the metric and the scalar field are functions of the time. Hence, the EMT satisfies the barotropic equation of state, and the model indicates that the constant mean Hubble parameter is not allowed. Thus, by appealing to the variation of the Hubble parameter, we assume a fixed deceleration parameter, and set the evolution of the quantities with respect to the fixed deceleration, the BD coupling and the state parameters. The WEC allows a shrinking extra dimension for a decelerating expanding universe that, in the constant scalar field, evolves the same way as the flat FRW spacetime in GR. The quantities for the stiff fluid and the radiation-dominated universe indicate an expanding universe commenced with a big bang. There is a horizon for each of the fluids, and the rate of expansion slows down by the time. The allowed ranges of the deceleration and the BD coupling parameters have been obtained, and the model gives an empty universe when the time goes to infinity.

Rasouli, S. M. M.; Farhoudi, Mehrdad; Sepangi, Hamid R.

2011-08-01

314

Non-destructively probing matter-photon correlations described by the Dicke-Hubbard Lattice model  

NASA Astrophysics Data System (ADS)

The Dicke-Hubbard Lattice (DHL) Hamiltonian is a prototypical system to study photon matter entanglement across a symmetry breaking quantum phase transition in the matter subsystem. The model describes a cavity containing a periodic lattice, with a single mode photon field delocalized across the cavity. Like the Bose-Hubbard model, the Hamiltonian includes on-site repulsion between atoms and nearest neighbor hopping of an atom from one site to another. In addition, matter-light coupling in the DHL model can excite an atom to a higher band by absorbing a photon and the reverse process. We focus on the DHL model in a region of parameter space in which light is ``superradiant'' and matter is either a Mott-insulator or superfluid of both bands. Through mean field, exact diagonalization, and quantum Monte Carlo calculations we examine photon statistics across the matter quantum phase transition in order to elucidate how the photon statistics reflect the matter correlations. Doing so provides a novel technique to non-destructively probe the Mott-insulator to superfluid phase transition.

Rajaram, Sara; Trivedi, Nandini

2012-02-01

315

Real-time observation of fluctuations at the driven-dissipative Dicke phase transition.  

PubMed

We experimentally study the influence of dissipation on the driven Dicke quantum phase transition, realized by coupling external degrees of freedom of a Bose-Einstein condensate to the light field of a high-finesse optical cavity. The cavity provides a natural dissipation channel, which gives rise to vacuum-induced fluctuations and allows us to observe density fluctuations of the gas in real-time. We monitor the divergence of these fluctuations over two orders of magnitude while approaching the phase transition, and observe a behavior that deviates significantly from that expected for a closed system. A correlation analysis of the fluctuations reveals the diverging time scale of the atomic dynamics and allows us to extract a damping rate for the external degree of freedom of the atoms. We find good agreement with our theoretical model including dissipation via both the cavity field and the atomic field. Using a dissipation channel to nondestructively gain information about a quantum many-body system provides a unique path to study the physics of driven-dissipative systems. PMID:23818599

Brennecke, Ferdinand; Mottl, Rafael; Baumann, Kristian; Landig, Renate; Donner, Tobias; Esslinger, Tilman

2013-07-01

316

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

NASA Astrophysics Data System (ADS)

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 , Nature (London)NATUAS0028-083610.1038/nature09009 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.

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

2011-10-01

317

Reversible and irreversible spacetime thermodynamics for general Brans-Dicke theories  

SciTech Connect

We derive the equations of motion for Palatini F(R) gravity by applying an entropy balance law TdS={delta}Q+{delta}N to the local Rindler wedge that can be constructed at each point of spacetime. Unlike previous results for metric F(R), there is no bulk viscosity term in the irreversible flux {delta}N. Both theories are equivalent to particular cases of Brans-Dicke scalar-tensor gravity. We show that the thermodynamical approach can be used ab initio also for this class of gravitational theories and it is able to provide both the metric and scalar equations of motion. In this case, the presence of an additional scalar degree of freedom and the requirement for it to be dynamical naturally imply a separate contribution from the scalar field to the heat flux {delta}Q. Therefore, the gravitational flux previously associated to a bulk viscosity term in metric F(R) turns out to be actually part of the reversible thermodynamics. Hence we conjecture that only the shear viscosity associated with Hartle-Hawking dissipation should be associated with irreversible thermodynamics.

Chirco, Goffredo; Eling, Christopher; Liberati, Stefano [SISSA, Via Bonomea 265, 34136 Trieste (Italy); INFN Sezione di Trieste, Via Valerio 2, 34127 Trieste (Italy)

2011-01-15

318

Two-photon spectroscopy of trapped HD+ ions in the Lamb-Dicke regime  

NASA Astrophysics Data System (ADS)

We study the feasibility of nearly degenerate two-photon rovibrational spectroscopy in ensembles of trapped, sympathetically cooled hydrogen molecular ions using a resonance-enhanced multiphoton dissociation (REMPD) scheme. Taking advantage of quasicoincidences in the rovibrational spectrum, the excitation lasers are tuned close to an intermediate level to resonantly enhance two-photon absorption. Realistic simulations of the REMPD signal are obtained using a four-level model that takes into account saturation effects, ion trajectories, laser frequency noise, and redistribution of population by blackbody radiation. We show that the use of counterpropagating laser beams enables optical excitation in an effective Lamb-Dicke regime. Sub-Doppler lines having widths in the 100-Hz range can be observed with good signal-to-noise ratio for an optimal choice of laser detunings. Our results indicate the feasibility of molecular spectroscopy at the 10-14 accuracy level for improved tests of molecular QED, a new determination of the proton-to-electron mass ratio, and studies of the time (in)dependence of the latter.

Tran, Vu Quang; Karr, Jean-Philippe; Douillet, Albane; Koelemeij, Jeroen C. J.; Hilico, Laurent

2013-09-01

319

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

SciTech Connect

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.

Nagy, D.; Szirmai, G.; Domokos, P. [Research Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest (Hungary)

2011-10-15

320

Classical Bethe Ansatz and normal forms in an integrable version of the Dicke model  

NASA Astrophysics Data System (ADS)

The Dicke–Jaynes–Cummings–Gaudin model describes a collection of n spins coupled to a harmonic oscillator. It is known to be integrable, so one can define a moment map which associates to each point in phase space the list of values of the n+1 conserved Hamiltonians. We identify all the critical points of this map and we compute the corresponding quadratic normal forms, using the Lax matrix representation of the model. The normal coordinates are constructed by a procedure which appears as a classical version of the Bethe Ansatz used to solve the quantum model. We show that only elliptic or focus–focus singularities are present in this model, which provides an interesting example of a symplectic toric action with singularities. To explore these, we study in detail the degeneracies of the spectral curves for the n=1 and n=2 cases. This gives a complete picture for the image of the momentum map (IMM) and the associated bifurcation diagram. For n=2 we found in particular some lines of rank 1 which lie, for one part, on the boundary of the IMM, where they behave like an edge separating two faces, and which go, for another part, inside the IMM.

Babelon, O.; Douçot, B.

2012-12-01

321

Dicke-model quantum spin and photon glass in optical cavities: Nonequilibrium theory and experimental signatures  

NASA Astrophysics Data System (ADS)

In the context of ultracold atoms in multimode optical cavities, the appearance of a quantum-critical glass phase of atomic spins has been predicted recently. Due to the long-range nature of the cavity-mediated interactions, but also the presence of a driving laser and dissipative processes such as cavity photon loss, the quantum optical realization of glassy physics has no analog in condensed matter and could evolve into a “cavity glass microscope” for frustrated quantum systems out of equilibrium. Here we develop the nonequilibrium theory of the multimode Dicke model with quenched disorder and Markovian dissipation. Using a unified Keldysh path integral approach, we show that the defining features of a low-temperature glass, representing a critical phase of matter with algebraically decaying temporal correlation functions, are seen to be robust against the presence of dissipation due to cavity loss. The universality class, however, is modified due to the Markovian bath. The presence of strong disorder leads to an enhanced equilibration of atomic and photonic degrees of freedom, including the emergence of a common low-frequency effective temperature. The imprint of the atomic spin-glass physics onto the photon subsystem realizes a “photon glass” state and makes it possible to detect the glass state by standard experimental techniques of quantum optics. We provide an unambiguous characterization of the superradiant and glassy phases in terms of fluorescence spectroscopy, homodyne detection, and the temporal photon correlation function g(2)(?).

Buchhold, Michael; Strack, Philipp; Sachdev, Subir; Diehl, Sebastian

2013-06-01

322

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

PubMed

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

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

2009-06-29

323

Reduction of nitromin to nitrogen mustard: unscheduled DNA synthesis in aerobic or anaerobic rat hepatocytes, JB1, BL8 and Walker carcinoma cell lines.  

PubMed

A novel route for the microsomal generation of nitrogen mustard from its N-oxide nitromin is demonstrated. The mustard was trapped as an adduct with diethyldithiocarbamate and estimated by capillary GLC. The enzyme responsible for this reduction could utilize either NADPH or NADH. Reduction occurred preferentially under anaerobic conditions. Purified cytochrome P450 reductase could carry out this reaction. Similar activities were seen using microsomal fractions from rat liver or liver derived BL8, JB1 or Walker 256 carcinoma cells, when these were expressed on a per mg of protein basis. Unscheduled DNA synthesis (UDS) was used as an index of activation of nitromin in these cell systems. In all instances, greater induction of UDS occurred in cells incubated with nitromin under anaerobic conditions. PMID:2509092

White, I N; Suzanger, M; Mattocks, A R; Bailey, E; Farmer, P B; Connors, T A

1989-11-01

324

Pigeon pea waste as a novel, inexpensive, substrate for production of a thermostable alkaline protease from thermoalkalophilic Bacillus sp. JB-99.  

PubMed

Thermoalkaliphilic Bacillus sp. JB-99 was grown in a 250 ml Erlenmeyer flask containing 50 ml medium containing (g/l) Pigeon pea waste 10; NaNO3, 5.0; K2HPO4, 5.0; MgSO4 x 2H2O, 0.2 and Na2CO3, 10.0. Incubations were carried out at 50 degrees C on a rotary incubator shaker for 15 h. A high level of extra cellular thermostable protease activity was observed after 24 h incubation. The optimum temperature and pH for activity were 70 degrees C and 11, respectively, so this enzyme showed stable activity at high temperature and under alkaline conditions. PMID:11848379

Johnvesly, B; Manjunath, B R; Naik, G R

2002-03-01

325

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

PubMed

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

Chevallier-Jussiau, Nadine

326

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

NASA Astrophysics Data System (ADS)

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.

Welther, B. L.

1993-05-01

327

Dr. Henry Head and lessons learned from his self-experiment on radial nerve transection.  

PubMed

In this paper the authors aim to review Dr. Henry Head's famous and dramatic nerve sectioning experiment. They discuss the implications of his experimental approach as well as the effect his experiment had on the field of neurology. Henry Head was a prominent British neurologist who contributed greatly to the understanding of the sensory examination through an experiment in which he had his own radial nerve transected. Head carefully documented the sensory changes following the sectioning. He hypothesized the existence of two separate sensory systems: protopathic and epicritic. Head was one of the first scientists to speculate on sensory dissociation, and his writings generated both enthusiasm and controversy. Although the ethical issue of self-experimentation was raised by his bold experiment and many aspects of his investigations and conclusions have been criticized, Head undoubtedly contributed important clinical lessons to neurology. Arguably, Henry Head's greatest contribution was the realization that the neurological portion of the sensory examination was anything but straightforward. PMID:20932092

Lenfest, Stephen M; Vaduva-Nemes, Andreea; Okun, Michael S

2010-10-08

328

Asymmetric syn-selective Henry reaction catalyzed by the sulfonyldiamine-CuCl-pyridine system.  

PubMed

A catalytic asymmetric Henry reaction has been developed with use of a sulfonyldiamine-CuCl complex as a catalyst. A series of new binaphthyl-containing sulfonyldiamine ligands (2a-h) were readily synthesized in two steps starting from commercially available chiral 1,2-diamines. The (R,R)-diamine-(R)-binaphthyl ligand (2d)-CuCl complex smoothly catalyzed the enantioselective Henry reaction with the assistance of pyridine to give the corresponding adduct with high enantiomeric excess (up to 93%). Moreover, the 2d-CuCl-pyridine system promotes the diastereoselective Henry reaction in syn-selective manner to give the adduct in up to 99% yield with 92:8 syn/ anti selectivity. The enantiomeric excess of the syn-adduct was 84% ee. PMID:18512989

Arai, Takayoshi; Takashita, Ryuta; Endo, Yoko; Watanabe, Masahiko; Yanagisawa, Akira

2008-05-31

329

Ground-water aspects of the lower Henrys Fork region, Idaho  

USGS Publications Warehouse

The lower Henrys Fork region includes the plains and low benches between Ashton and the junction of Henrys Fork and Snake River in eastern Idaho. The northwestern and western parts of the area are part of the Snake River lava plain. The central part of the area is occupied by alluvial plains of the Snake, Teton, and Falls Rivers, and Henrys Fork. The southeastern part of the area is a bench (Rexburg Bench), chiefly on silicic and basaltic volcanic rocks, which rises gradually to mountain peaks southeast of the area. The basalt, and the sand and gravel under the alluvial plains are good aquifers and yield large amounts of water with small drawdowns. The silicic volcanic rocks and the interbedded ash, pyroclastics, and sedimentary deposits generally yield much less water than the basalt and alluvium.

Crosthwaite, E. J.; Mundorff, M. J.; Walker, E. H.

1967-01-01

330

Axially Symmetric Space-Time with Strange Quark Matter Attached to String Cloud in Brans-Dicke Theory of Gravitation  

NASA Astrophysics Data System (ADS)

The axially symmetric space times with strange quark matter attached to string cloud in Brans-Dicke theory of gravitation and general relativity have been studied. The field equations of the two theories have been solved by using the anisotropy feature of the universe in the axially symmetric space time. Some important features of the models, thus obtained, have been discussed. We noticed that the presence of scalar field doesn't affect the geometry of the space-time but changes the matter distribution.

Rao, V. U. M.; Sireesha, K. V. S.

2013-04-01

331

? parameter in Brans-Dicke-like (light-)scalar-tensor theory with a universal scalar-matter coupling  

NASA Astrophysics Data System (ADS)

The post-Newtonian parameter ? resulting from a universal scalar-matter coupling is investigated in Brans-Dicke-like scalar-tensor theories where the scalar potential is assumed to be negligible. Conversely to previous studies, we use a perfect fluid formalism in order to get the explicit scalar-field equation. It is shown that the metric can be put in its standard post-Newtonian form. However, it is pointed out that 1-? could be either positive, null or negative for a finite value of ?0, depending on the coupling function, while scalar-tensor theories without coupling always predict ?<1 for a finite value of ?0.

Minazzoli, Olivier

2013-09-01

332

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

SciTech Connect

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.

Rybolt, T.R.; Epperson, M.T.; Weaver, H.W. [Univ. of Tennessee, Chattanooga, TN (United States). Dept. of Chemistry; Thomas, H.E.; Clare, S.E.; Manning, B.M.; McClung, J.T. [Erskine Coll., Due West, SC (United States)

1995-07-01

333

Per-6-amino-?-cyclodextrin as a reusable promoter and chiral host for enantioselective Henry reaction.  

PubMed

A highly efficient enantioselective Henry reaction has been carried out using per-6-ABCD as a supramolecular chiral host and promoter to give the corresponding adduct with high yield (up to 99%) and enantiomeric excess (up to 99%). Per-6-ABCD also promotes the diastereoselective Henry reaction in a syn-selective manner to give the adduct up to 99% yield with 99:1 syn/anti selectivity. The enantiomeric excess of the syn-adduct is 99%. The catalyst is recovered and reused without loss in its activity. PMID:20731369

Kanagaraj, Kuppusamy; Suresh, Palaniswamy; Pitchumani, Kasi

2010-09-17

334

[Henri Fruchaud (1894-1960), man of courage, anatomist and surgeon].  

PubMed

That short biographical note, written for the centenary of Henri Fruchaud's birth, regretably appears somewhat late. Two components of the rich personality of this uncommon man are underlined: his passion for surgery, supported by anatomical researches which made him a well known author; and his patriotic devotion during this century two World Wars, when - testimonies prove this - his surgical skill, imagination and physical resistance rendered outstanding services recognized by the Nation. The critical evocation of his anatomical and surgical publications insists on the work of Henri Fruchaud in Hernia Surgery and try to make the reader sharing with the redactor and many worldwide surgeons admirative feelings. PMID:11625212

Stoppa, R

335

Overlap of quantum many-body states with a separable state and phase transitions in the Dicke model: Zero and finite temperature  

SciTech Connect

Overlap with the separable state is introduced in this article for the purpose of characterizing the overall correlation in many-body systems. This definition has clear geometric and physical meaning and moreover can be considered as the generalization of the concept of the Anderson orthogonality catastrophe. As an exemplification, it is used to mark the phase transition in the Dicke model for zero and finite temperatures, and the discussion shows that it can faithfully reflect the phase transition properties of this model whether for zero or finite temperature. Furthermore, the overlap for the ground state also indicates the appearance of multipartite entanglement in the Dicke model.

Cui, H. T. [School of Physics and Electrical Engineering, Anyang Normal University, Anyang 455000 (China)

2010-04-15

336

Copper-catalyzed enantioselective Henry reaction of enals and subsequent iodocyclization: stereoselective construction of chiral azatricyclic frameworks.  

PubMed

In the frame: A cascade sequence combining an asymmetric Henry reaction and a stereoselective intramolecular iodocyclization provides direct access to an enantioenriched tricyclic hexahydrochromeno[4,3-b]pyrrole framework. The Henry reaction is catalyzed by copper in the presence of L1. PMID:23934727

Zhou, Yirong; Zhu, Yuequan; Yan, Shaobai; Gong, Yuefa

2013-08-09

337

Improving the worthiness of the Henry problem as a benchmark for density-dependent groundwater flow models  

Microsoft Academic Search

This study considers the worthiness of the Henry saltwater intrusion problem as a test case to benchmark density-dependent groundwater flow models. Previously published results from a coupled versus uncoupled analysis indicate that the flow patterns associated with the standard Henry problem are largely dictated by the boundary forcing and not necessarily a result of density-dependent effects [Simpson and Clement, 2003].

Matthew J. Simpson; T. Prabhakar Clement

2004-01-01

338

40 CFR Appendix Vi to Part 265 - Compounds With Henry's Law Constant Less Than 0.1 Y/X  

Code of Federal Regulations, 2010 CFR

...2009-07-01 false Compounds With Henry's Law Constant Less Than 0...to Part 265âCompounds With Henry's Law Constant Less Than 0...504-24-5 Aniline 62-53-3 o-Anisidine 90-04-0 Anthraquinone... 105-60-2 Catechol (o-dihydroxybenzene)...

2009-07-01

339

40 CFR Appendix Vi to Part 265 - Compounds With Henry's Law Constant Less Than 0.1 Y/X  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Compounds With Henry's Law Constant Less Than 0...to Part 265âCompounds With Henry's Law Constant Less Than 0...504-24-5 Aniline 62-53-3 o-Anisidine 90-04-0 Anthraquinone... 105-60-2 Catechol (o-dihydroxybenzene)...

2010-07-01

340

Dissolved-Solids Load in Henrys Fork Upstream from the Confluence with Antelope Wash, Wyoming, Water Years 1970-2009.  

National Technical Information Service (NTIS)

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 19702009 ranged from 18,30...

K. Foster T. A. Kenney

2010-01-01

341

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

ERIC Educational Resources Information Center

|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…

Einhorn, Lois

342

Perfect spin filtering and conditions for Fano antiresonance and Dicke resonance in a parallel coupled triple quantum-dot array  

NASA Astrophysics Data System (ADS)

Electronic transport through a parallel coupled triple quantum dot (tQD) array has been studied by means of nonequilibrium Green's function formalism. By producing an energy difference between the site energy in the upper QDs and down ones, we find that the linear conductance spectrum of this tQD array displays Fano antiresonance and Dicke resonance effects. As the energy difference increases or the tQD chain length increases to a not very large value, the antiresonance valley in the conductance changes to a well-defined insulating band with very steep edges. Meanwhile, the relations of the Fano antiresonance and the well-defined insulating band are explored, and the conditions for the Fano antiresonance and the Dicke resonance are presented. By introducing a Zeeman splitting due to an external magnetic field, the spin-splitting conductance spectrum shows some highly to 100% spin-polarized windows (SPWs). If a gate voltage runs in these SPWs, we can achieve an entirely spin-polarized current, indicating that such a tQD array can be used as a perfect spin filter and a quantum-signal generator. Moreover, the intradot Coulomb repulsion on the electronic transport is also investigated. The results show that the intradot Coulomb repulsion does not affect the device applications for this system mentioned above.

Fu, Hua-Hua; Yao, Kai-Lun

2013-05-01

343

Superradiance, Berry phase, photon phase diffusion, and number squeezed state in the U(1) Dicke (Tavis-Cummings) model  

SciTech Connect

Recently, strong-coupling regimes of superconducting qubits or quantum dots inside a microwave circuit cavity and BEC atoms inside an optical cavity were achieved experimentally. The strong-coupling regimes in these systems were described by the Dicke model. Here, we solve the Dicke model by a 1/N expansion. In the normal state, we find a {radical}(N) behavior of the collective Rabi splitting. In the superradiant phase, we identify an important Berry phase term that has dramatic effects on both the ground state and the excitation spectra of the strongly interacting system. The single photon excitation spectrum has a low-energy quantum phase diffusion mode in imaginary time with a large spectral weight and also a high-energy optical mode with a low spectral weight. The photons are in a number squeezed state that may have wide applications in high sensitive measurements and quantum-information processing. Comparisons with exact diagonalization studies are made. Possible experimental schemes to realize the superradiant phase are briefly discussed.

Ye Jinwu [Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Department of Physics, Capital Normal University, Beijing 100048 (China); Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762 (United States); Zhang Cunlin [Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Department of Physics, Capital Normal University, Beijing 100048 (China)

2011-08-15

344

Henry David Thoreau's apotheosis of John Brown: A study of nineteenth century rhetorical heroism  

Microsoft Academic Search

In the winter of 1859 through the summer of 1860, Henry David Thoreau delivered three speeches about John Brown, whose recent raid at Harper's Ferry, Virginia, stirred controversy throughout the Union. In his speeches, Thoreau addressed Brown and his deeds, celebrating their justice and defending them from attacks by more compromising abolitionists. Examining Thoreau's work in the context of nineteenth

Paul D. Erickson

1996-01-01

345

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

ERIC Educational Resources Information Center

|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…

Grapsy, Ronald P., Jr.

346

Henri Wallon's Theory of Early Child Development: The Role of Emotions  

Microsoft Academic Search

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

René van der Veer

1996-01-01

347

Comment on ``Nonlocal character of quantum theory,'' by Henry P. Stapp  

Microsoft Academic Search

A 1997 paper by Henry Stapp attempts to achieve a definitive argument for his long-sustained thesis that quantum mechanics implies a nonlocality inconsistent with the locality of relativity theory. His argument assumes both the validity of counterfactual reasoning under certain circumstances and the free choice of performance of experiments, and it specifically refrains from any assumptions about ``elements of physical

Abner Shimony; Howard Stein

2001-01-01

348

The World According to Quantum Mechanics (Or the 18 Errors of Henry P. Stapp)  

Microsoft Academic Search

Several errors in Stapp's interpretation of quantum mechanics and its application to mental causation (Henry P. Stapp, Quantum theory and the role of mind in nature, Foundations of Physics\\u000a31, 1465–1499 (2001)) are pointed out. An interpretation of (standard) quantum mechanics that avoids these errors is presented.

Ulrich Mohrhoff

2002-01-01

349

Professor Henry Wright Baker: the Dead Sea Scrolls and his centenary  

Microsoft Academic Search

This paper describes the discovery of the Dead Sea Scrolls in Qumran in 1952 and the work of Professor Henry Wright Baker in successfully unrolling the metal scrolls so that they could be read by biblical scholars. Other notable features of Professor Wright Baker’s life and career are also given.

W Johnson

1999-01-01

350

Cosolvent effects of alcohols on the Henry's law constant and aqueous solubility of tetrachloroethylene (PCE)  

Microsoft Academic Search

The effects of selected cosolvents ethyl alcohol (EtOH), isopropyl alcohol (IPA), and tertbutyl alcohol (TBA) on the Henry's law constant (H) of tetrachloroethylene (PCE) in aqueous solutions were investigated using the static headspace method. Alcohols in solution at a concentration around 20% and above acted as cosolvents increasing the aqueous solubility of PCE, which resulted in lower H values for

Tarek I Ladaa; Cindy M Lee; John T Coates; Ronald W Falta

2001-01-01

351

The Gift of the Magi, Based on the Story by O. Henry. Classics in Photostories Series.  

ERIC Educational Resources Information Center

|The photographic narrative of O. Henry's classic short story, "The Gift of the Magi," is designed for use in teaching English as a Second Language. It is accompanied by an audiocassette recording (not included here). An introductory section offers teachers suggestions for classroom use of the materials. The story is told in a series of…

Butovsky, Lillian; Creatore, Cheryl

352

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

ERIC Educational Resources Information Center

|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…

von Zastrow, Claus

2009-01-01

353

Economics and Feasibility of Co-Composting Solid Waste in McHenry County.  

National Technical Information Service (NTIS)

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...

J. Alpert

1987-01-01

354

Henry George, Private Property and The American Origins of Rerum Novarum  

Microsoft Academic Search

Rerum Novarum, the papal encyclical of Pope Leo XIII, has had a major impact on Catholic thinking. Issued in 1891 it immediately received much public attention. This was especially the case in the United States where it was seen as the response re-affirming the sanctity of private property long sought by the American bishops in the public debates with Henry

Leonard P. Liggio

2003-01-01

355

CRCHD Principal Investigator: Ronda S. Henry-Tillman, M.D.  

Cancer.gov

Dr. Henry-Tillman is a recognized leader in the breast cancer arena-from early diagnosis to innovative treatment. She received the National Cancer Institute Leadership Award in 2004 for her work with the Arkansas Special Populations Access Network (ASPAN), a 5-year grant focusing on increasing cancer control activities among Arkansas' minority and medically underserved communities.

356

Henry Ussher and the early history of Dunsink Observatory: A bicentennial note  

NASA Astrophysics Data System (ADS)

A short account of Henry Ussher's life and work. It encompasses his election by Trinity College of Dublin University as first Andrews Professor of Astronomy in 1783, his part in the foundation of Dunsink Observatory and his work there until his death in 1790.

Duff, I.

1983-12-01

357

Chandler as a biographer: content thematic analysis of Chandler's biography of Henry Varnum Poor  

Microsoft Academic Search

Purpose – This paper analyzes Chandler's biography of Henry Varnum Poor to assess Chandler's contribution to management history as a biographer. Design\\/methodology\\/approach – Using Winter's content thematic analysis, measure Poor's motivational needs for achievement, affiliation-intimacy, and power, as they are depicted by Chandler throughout the stages of Poor's career as a business editor, analyst, and reformer. Findings – Our analysis

Leigh Ann Bynum; Russell W. Clayton; Mario Hayek; Miriam Moeller; Wallace A. Williams Jr

2009-01-01

358

Michael Anesko - Is James's Hawthorne Really James's Hawthorne? - The Henry James Review 29:1  

Microsoft Academic Search

Henry James's critical biography Hawthorne (1879) has long has since achieved canonical status among students of American literature. Precisely because James's biography has secured that stature, however, it seems surprising that scholars have failed to subject the author's methods and sources to more careful scrutiny. Closer analysis will suggest that James was, if not an outright plagiarist, then at the

Michael Anesko

2008-01-01

359

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

NASA Astrophysics Data System (ADS)

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...

Murdin, P.

2000-11-01

360

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

Federal Register 2010, 2011, 2012, 2013

...March 9, 2006, death of an 8-year-old...subject to civil penalties for its knowing...subject to civil penalties for its knowing...serious injury or death, and Henry Gordy...any of the four deaths described in staff's...shall pay a civil penalty in the amount...

2011-10-14

361

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

Microsoft Academic Search

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

P. Murdin

2000-01-01

362

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...

363

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

USGS Publications Warehouse

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.

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

2009-01-01

364

[Portrait of a Confederate secret agent: the dentis Henry A. Parr].  

PubMed

Dr. Henry A. Parr had many aspects in his career, beginning life as secret confederate agent during the Civil War, and finally ending as the president's dentist. The way he played these roles, as a pirate, accused of murder, as a pharmacist, inventor and dental teacher, makes up a real odysey, well documented. PMID:11639043

Hyson, J M; Swanson, B Z

1998-11-01

365

Effective Henry's Law constant measurements for glyoxal in model aerosols containing sulfate  

NASA Astrophysics Data System (ADS)

Traditional models represent secondary organic aerosol (SOA) formation based on the gas-phase oxidation of a limited set of precursor molecules. However, these models tend to under-estimate the amounts and degree of oxygenation of actual SOA, indicating missing processes. One such source that has become increasingly important in recent years is glyoxal (CHOCHO, the smallest alpha-dicarbonyl). Unlike traditional SOA precursors, glyoxal forms SOA by partitioning to the aqueous phase according to Henry's Law. This work presents an analysis of Henry's Law constants for glyoxal uptake to laboratory-generated aerosols in a dynamically coupled gas-aerosol system. We combine CU LED-CE-DOAS measurements of gas-phase glyoxal with online HR-Tof-AMS and time-resolved HPLC ESI MS/MS particle-phase measurements to characterize the time resolved evolution of glyoxal partitioning, and relate molecular-specific measurements to AMS mass spectra. The experiments were performed in the simulation chamber facility at PSI, Switzerland, and investigate ammonium sulfate (AS), and mixed AS / fulvic acid seed aerosols under relative humidity conditions ranging from 50 to 85% RH. The Henry's Law and effective Henry's Law constants are compared with other values reported in the literature.

Kampf, C.; Waxman, E.; Slowik, J.; Dommen, J.; Prevot, A.; Baltensperger, U.; Noziere, B.; Hoffmann, T.; Volkamer, R.

2012-04-01

366

Effective Henry's Law constant measurements for glyoxal in model aerosols containing sulfate  

NASA Astrophysics Data System (ADS)

Traditional models represent secondary organic aerosol (SOA) formation based on the gas-phase oxidation of a limited set of precursor molecules. However, these models tend to under-estimate the amounts and degree of oxygenation of actual SOA, indicating missing processes. One such source that has become increasingly important in recent years is glyoxal (CHOCHO, the smallest alpha-dicarbonyl). Unlike traditional SOA precursors, glyoxal forms SOA by partitioning to the aqueous phase according to Henry's Law. This work presents an analysis of Henry's Law constants for glyoxal uptake to laboratory-generated aerosols in a dynamically coupled gas-aerosol system. We combine CU LED-CE-DOAS measurements of gas-phase glyoxal with online HR-Tof-AMS and time-resolved HPLC ESI MS/MS particle-phase measurements to characterize the time resolved evolution of glyoxal partitioning, and relate molecular-specific measurements to AMS mass spectra. The experiments were performed in the simulation chamber facility at PSI, Switzerland, and investigate ammonium sulfate (AS), and mixed AS / fulvic acid seed aerosols under relative humidity conditions ranging from 50 to 85% RH. The Henry's Law and effective Henry's Law constants are compared with other values reported in the literature.

Kampf, C. J.; Waxman, E.; Slowik, J. G.; Dommen, J.; Prevot, A. S.; Noziere, B.; Hoffmann, T.; Volkamer, R.

2011-12-01

367

Writing the In(in)Between: Expressions of écriture Féminine in Henry Miller's Tropics Trilogy  

Microsoft Academic Search

The critical history of the texts written by Henry Miller is full of controversy and conflicting assertions as critics rarely agree on any constant interpretations of his work, or life. Some regard him as a playful buffoon without craft or ability while others believe he is one of the greatest writers of the twentieth century. There are those who characterize

Allison Paige Palumbo

2005-01-01

368

English mint administration, moneyers and monetary reform in the reign of Henry II, 1154--1189  

Microsoft Academic Search

In the latter half of the twelfth century King Henry II of England (1154–1189) undertook a comprehensive reform of the English mint system. Control of the coinage was an important prerogative of the English crown and the coinage itself a prime symbol of the king's power, authority and prestige in England. Unlike their peers in continental Europe, English kings before

Gilbert M Stack

2004-01-01

369

Does Anyone Care. Henry 0. Flipper and the United States Army.  

National Technical Information Service (NTIS)

This study addresses the cadet and military times of Lieutenant Henry 0. Flipper, the first African-American graduate of the United States Military Academy and the first African-American to serve as a regular Army officer. Lieutenant Flipper entered West ...

J. J. Taylor

1995-01-01

370

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

ERIC Educational Resources Information Center

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…

Theodoridou, Zoe D.; Triarhou, Lazaros C.

2009-01-01

371

Henry Herbert Goddard and the Politics of Mental Measurement (1910-1920).  

ERIC Educational Resources Information Center

|The history of the study of human mental ability is an example of the dialectic in social science between those who interpret data within the framework of existing social inequities and those who look for perspectives that might eventually dissolve inequities. The dedication of Henry Herbert Goddard to a belief in the scientific proof of…

Gonzalves, Linda

372

American Airpower Comes of Age: General Henry H. 'Hap' Arnold's World War II Diaries. Volume 1.  

National Technical Information Service (NTIS)

Although the need for a comprehensive biography of Gen Henry H. 'Hap' Arnold exists, this volume does not constitute such a biography. Nor is this work intended as a history of the Army Air Forces in World War II. The aim of the editor has been to place i...

J. W. Huston

2002-01-01

373

Henry Adams's Life of George Cabot Lodge: A Portrait of the Artist as an Alienated Man.  

National Technical Information Service (NTIS)

Henry Adams's Life of George Cabot Lodge presents the biography of a minor poet whose birth into one of Boston's most prominent families may have been an obstacle towards his reaching literary success, for reasons which seem strikingly similar to the biog...

J. H. Meredith

1994-01-01

374

Richard Henry Pratt: The Red Man's Solomon, and His Experiment in Indian Education.  

National Technical Information Service (NTIS)

The central theme of the essay is a consideration of the factors in the life of Richard Henry Pratt which facilitated his development of philosophy of Indian Education that sought the total integration of the American Indian into the American society, and...

C. L. Reaser

1975-01-01

375

American Airpower Comes of Age: General Henry H. 'Hap' Arnold's World War II Diaries. Volume 2.  

National Technical Information Service (NTIS)

Although the need for a comprehensive biography of Gen Henry H. 'Hap' Arnold exists, this volume does not constitute such a biography. Nor is this work intended as a history of the Army Air Forces in World War II. The aim of the editor has been to place i...

J. W. Huston

2002-01-01

376

The Geopolitics of Literature: the Shifting International Theme in the Works of Henry James  

Microsoft Academic Search

This article demonstrates how changes in Henry James' handling of the international theme, that is Europeans and Americans compared, can be correlated to alterations in the international position of the United States itself. It argues that, whereas in his novels and stories of the 1870s\\/early 1880s (Roderick Hudson, Daisy Miller, The American, The Europeans, Portrait of a Lady), it is

Priscilla Roberts

2012-01-01

377

Regulator Par Excellence: Sir Henry Bland and Industrial Relations 1950-1967  

Microsoft Academic Search

Study of the role of individuals in the bistory of Australian industrial relations has so far been limited largely to biographies of labour leaders and of a bandful of arbitration judges. This paper looks at the part played by Sir Henry Armand Bland (1909-1997), a federal public servant who for nearly two decades wielded an influence in national labour relations

Tom Sheridan

1999-01-01

378

The Inertia of Sex: Henry Adams on Family and the Politics of Unconditional Love  

Microsoft Academic Search

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

Brian Duff

2010-01-01

379

A new understanding of the first electromagnetic machine: Joseph Henry's vibrating motor  

NASA Astrophysics Data System (ADS)

In 1831, Henry invented a battery-powered rocking-beam motor that he later described as the first electromagnetic machine. He repeatedly modified the design over his career, but only one version of a motor actually constructed by Henry is known to exist. This version is in a collection of Henry instruments at Princeton University. We found that the Princeton motor cannot have operated in the form that was displayed as early as 1884. We found evidence in several historical documents and in the instrument itself that the field magnet shown with the motor is a mistake. Instead of a single horizontal bar magnet, the motor was designed to use two elliptical magnets. We presume the error was made by whoever assembled the first public display. We modeled the dynamics of Henry's vibrating motor and compared our results to the operation of a replica motor. Modeling provides insight into how the motor is able to vibrate indefinitely even in the presence of energy loss due to friction.

Littman, Michael G.; Stern, Lucas E.

2011-02-01

380

Fighting the higher battle: The life and times of Dr. Henry Hitt Crane  

Microsoft Academic Search

Dr. Henry Hitt Crane was one of the most influential American Methodist ministers of the twentieth century. A gifted speaker, he became one of the most popular preachers in university chapels from the early 1920s to the early 1960s. Although he frequently preached on the Social Gospel, his special contribution was his fervent advocacy of pacifism. With other Methodist pacifists,

William Lawrence Elster

1998-01-01

381

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

ERIC Educational Resources Information Center

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…

Hanson, Trudy L.

382

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

ERIC Educational Resources Information Center

|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…

Theodoridou, Zoe D.; Triarhou, Lazaros C.

2009-01-01

383

The Science of Science: A Physicist Reads Barnes, Bloor and Henry.  

ERIC Educational Resources Information Center

In their book entitled Scientific Knowledge, Barry Barnes, David Bloor, and John Henry repudiate the notion that physical environment plays no role in the creation of scientific knowledge, thereby removing a major bone of contention between scientists and practitioners of the sociology of scientific knowledge. A physicist discusses ways in which…

Mermin, N. David

1998-01-01

384

Highly stereoselective synthesis of trisubstituted cyclohexanols using a guanidine-catalyzed tandem Henry-Michael reaction.  

PubMed

A highly diastereoselective (dr >99:1) and enantioselective (ee value up to 98%) synthesis of trisubstituted cyclohexanols was achieved by using a tandem Henry--Michael reaction between nitromethane and 7-oxo-hept-5-enals catalyzed by the Misaki-Sugimura guanidine. PMID:23544418

Dai, Qipu; Huang, Huicai; Zhao, John Cong-Gui

2013-04-09

385

Emplacement of multiple magma sheets and wall rock deformation: Trachyte Mesa intrusion, Henry Mountains, Utah  

Microsoft Academic Search

A detailed structural and rock magnetic study of the Trachyte Mesa intrusion and deformed sedimentary wall rocks, Henry Mountains, Utah, indicates that the intrusion grew vertically and horizontally by the accumulation of multiple horizontal magma sheets. 2–3cm thick shear zones recognized by intensely cataclasized plagioclase phenocrysts define the contact between sheets. Sheets have bulbous and \\/ or steep frontal terminations

Sven Morgan; Amy Stanik; Eric Horsman; Basil Tikoff; Michel de Saint Blanquat; Guillaume Habert

2008-01-01

386

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

ERIC Educational Resources Information Center

|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…

Brenner, Carla

387

James McHenry: Soldier-Statesmen of the Constitution. A Bicentennial Series, No. 4.  

ERIC Educational Resources Information Center

Less than five years after his first landing in the American colonies, James McHenry, a well-education Scots-Irish immigrant, was serving with the Continental Army outside Boston (Massachusetts), and his military experience led him into a lengthy career of public service where he forcefully and consistently upheld the ideal of a strong central…

Army Center of Military History, Washington, DC.

388

Intuition and intellect: Henri Bergson's influence on Katherine Mansfield's representations of places  

Microsoft Academic Search

Henri Bergson posits that there are two ways in which we know places: intuitive and intellectual. This paper, which considers the significance of the influence of Bergson's philosophy on Katherine Mansfield's writing, will explore how Mansfield represents our intuitive perception of “extensity” and our intellectual knowledge about “spaces” (such as “countries\\

Eiko Nakano

2002-01-01

389

Silent dryer drive (sup TM). A demonstration project at Henry Cooke Ltd., Cumbria.  

National Technical Information Service (NTIS)

The Silent Dryer drive dispenses with the usual train of gears familiar in paper machine drying sections and drives the section through a number of small motors on individual felt rolls. The first UK installation at the Henry Cooke mill has been completed...

G. H. Nuttall

1989-01-01

390

The Family Legacy of Henry Clay: In the Shadow of a Kentucky Patriarch  

Microsoft Academic Search

Known as the Great Compromiser, Kentuckian Henry Clay left a valuable legacy to his country by defining the role of Speaker of the House, envisioning a plan, the American System, that foretold the economic development of the nation, and fashioning compromises that postponed civil war until a southern victory was far less likely. He failed, however, to become president, and

Lindsey Apple

2012-01-01

391

Dissolved-Solids Load in Henrys Fork Upstream from the Confluence with Antelope Wash, Wyoming, Water Years 1970-2009  

USGS Publications Warehouse

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.

Foster, Katharine; Kenney, Terry A.

2010-01-01

392

Enhanced production of alkaline thermostable keratinolytic protease from calcium alginate immobilized cells of thermoalkalophilic Bacillus halodurans JB 99 exhibiting dehairing activity.  

PubMed

The thermoalkalophilic Bacillus halodurans JB 99 cells known for production of novel thermostable alkaline keratinolytic protease were immobilized in calcium alginate matrix. Batch and repeated batch cultivation using calcium alginate immobilized cells were studied for alkaline protease production in submerged fermentation. Immobilized cells with 2.5% alginate and 350 beads/flask of initial cell loading showed enhanced production of alkaline protease by 23.2% (5,275 ± 39.4 U/ml) as compared to free cells (4,280 ± 35.4 U/ml) after 24 h. In the semicontinuous mode of cultivation, immobilized cells under optimized conditions produced an appreciable level of alkaline protease in up to nine cycles and reached a maximal value of 5,975 U/ml after the seventh cycle. The enzyme produced from immobilized cells efficiently degraded chicken feathers in the presence of a reducing agent which can help the poultry industry in the management of keratin-rich waste and obtaining value-added products. PMID:21691794

Shrinivas, Dengeti; Kumar, Raghwendra; Naik, G R

2011-06-21

393

The Dual Roles of c-Jun NH2-Terminal Kinase Signaling in Cr(VI)-Induced Apoptosis in JB6 Cells  

PubMed Central

Occupational exposure to chromium (Cr) compounds has been shown to cause serious toxic and carcinogenic effects. The skin is an important target for the compounds in industrially exposed Cr workers. c-Jun NH2-terminal kinase (JNK) regulates cell proliferation, apoptosis, and differentiation. This protein's effects on cellular response depend upon the cell type and stimuli. The mechanisms by which hexavalent chromium (Cr(VI)) leads to apoptosis in the skin are unclear at present. The aim of this study is to examine whether JNK regulates apoptosis in Cr(VI)-exposed mouse JB6 epidermal cells. The present study showed that Cr(VI) induced apoptotic cell death through JNK activation. The blockage of JNK by small interference RNA (si-RNA) transfection suppressed Cr(VI)-induced apoptotic cell death with the concomitant downregulation of antiapoptotic Bcl-2 family proteins, mitochondrial membrane depolarization (??m), caspase activation, and poly (ADP-ribose) polymerase cleavage. However, inhibition of c-Jun expression by si-RNA transfection enhanced cytotoxicity, which corresponded to increasing apoptosis and ??m. This phenomenon is associated with p53 activation caused by increasing reactive oxygen species (ROS) levels because of the downregulation of superoxide dismutase expression in si-c-Jun–transfected cells. Taken together, Cr(VI) induces apoptosis via JNK-mediated signaling, whereas c-Jun activation acts as an inhibitor of apoptotic signaling. Additionally, ROS generated by Cr(VI) is a pivotal regulator of JNK.

Son, Young-Ok; Hitron, John Andrew; Cheng, Senping; Budhraja, Amit; Zhang, Zhuo; Lan Guo, Nancy; Lee, Jeong-Chae; Shi, Xianglin

2011-01-01

394

Apoptosis induced by tungsten carbide-cobalt nanoparticles in JB6 cells involves ROS generation through both extrinsic and intrinsic apoptosis pathways.  

PubMed

In this study, apoptosis and related signaling induced by WC-Co nanoparticles were investigated in JB6 cells and rat lung macrophages. Electron spin resonance (ESR) and fluorescent staining indicated that both WC-Co nanoparticles and fine particles stimulated reactive oxygen species (ROS) generation. Catalase exhibited an inhibitory effect on WC-Co nanoparticle-induced ROS as well as mitochondrial membrane permeability damage. Further study indicated that WC-Co nanoparticles elicited higher cytotoxicity and apoptotic induction than fine particles. Western blot analysis showed activation of proapoptotic factors including Fas, Fas-associated protein with death domain (FADD), caspase 3, 8 and 9, BID and BAX. In addition, both cytochrome c and apoptosis-inducing factor (AIF) were upregulated and released from mitochondria to the cytoplasm. Our findings demonstrate that, on a mass basis, WC-Co nanoparticles exhibit higher cytotoxicity and apoptotic induction than fine particles. Apoptosis induced by WC-Co nanoparticles and fine particles involves both extrinsic and intrinsic apoptosis pathways. PMID:23417053

Zhao, Jinshun; Bowman, Linda; Magaye, Ruth; Leonard, Stephen S; Castranova, Vincent; Ding, Min

2013-02-15

395

Solubility of gases in liquids. 22. High-precision determination of Henry’s law constants of oxygen in liquid water from T = 274 K to T = 328 K  

Microsoft Academic Search

The solubility of oxygen in pure liquid water was measured at a total pressure of about 100 kPa and from about T= 274.15 K to T= 328.14 K using an analytical method characterized by a precision of ±0.05 per cent or less. From the experimental results, Henry’s law constants H2,1(T, ps,1) at the vapor pressureps,1 (T) of water as well

Emmerich Wilhelm

2000-01-01

396

On the relationship between the classical Dicke-Jaynes-Cummings-Gaudin model and the nonlinear Schrödinger equation  

NASA Astrophysics Data System (ADS)

In this paper, the relationship between the classical Dicke-Jaynes-Cummings-Gaudin (DJCG) model and the nonlinear Schrödinger (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.

Du, Dianlou; Geng, Xue

2013-05-01

397

[Henri Ellenberger, Henri Ey and the Traité de Psychiatrie in the "Encyclopédie Médico-Chirurgicale": an American career under the auspices of the "Evolution Psychiatrique"].  

PubMed

Henri Ellenberger, psychiatrist and historian, experienced a decisive period in his career in the early fifties of the last century. Educated in France, intern at Sainte-Anne Hospital, he was working in Switzerland after the war and then tried to move to the United States. It was during his participation in the French group "l'Evolution Psychiatrique" that he happened to contribute to the treatise of psychiatry (1955) of the French medical and surgical encyclopaedia ("EMC") and organise an observation trip to the United States. He was supported at that time by Henri Ey, key figure of French psychiatry. While going back to his career, we would like to emphasise on his comments about the "Psychotherapy of schizophrenia". Even though later Ellenberger became a well-known researcher in North America, it is more a question for us to discuss the scientific ambition he had in this particular context of a French learned society as a member of "l'Evolution Psychiatrique" and as a psychiatrist formerly intern from the "Hôpitaux psychiatriques de la Seine" (Parisian district). PMID:17451117

Delille, Emmanuel

2006-01-01

398

An early manuscript in the history of American comparative psychology: Lewis Henry Morgan's "Animal Psychology" (1857).  

PubMed

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

Johnston, Timothy D

2002-11-01

399

Efficient Agrobacterium -mediated transformation of commercial hybrid poplar Populus nigra L. ×  P. maximowiczii A. Henry  

Microsoft Academic Search

Many economically important species of Populus, especially those in sections Aigeiros and Tacamahaca, remain recalcitrant to genetic transformation. In this study, a simple and reliable protocol was developed for the efficient\\u000a Agrobacterium-mediated transformation of a difficult-to-transform, but commercially viable, hybrid poplar Populus nigra L. × P. maximowiczii A. Henry (NM6). A plant transformation vector designed to express the ?-glucuronidase (GUS) gene was

Dmytro P. Yevtushenko; Santosh Misra

2010-01-01

400

Determination of Henry's law constants for low volatile mixed halogenated anisoles using solid-phase microextraction  

Microsoft Academic Search

Trihalogenated anisoles (THAs) that have been identified at low concentration levels (ngL?1) in drinking water are suspected of causing odor episodes, which are a frequent source of complaint by consumers. Henry's law constant (KH) is an important parameter in controlling the diffusion of organic compounds from the water to the vapor-phase, so its evaluation is of significance in the study

Alfredo Diaz; Francesc Ventura; M Galceran

2007-01-01

401

William Henry Battle and Battle's sign: mastoid ecchymosis as an indicator of basilar skull fracture.  

PubMed

William Henry Battle (1855-1936) practiced medicine in England > 1 century ago and is primarily remembered for his description of ecchymosis over the mastoid, which indicates fracture of the skull base. Although Mr. Battle made many contributions to medicine, almost nothing exists in the literature regarding his life and findings, especially in regard to head injury. The following is a review of Battle's background and his contributions to medicine, specifically his observations associated with basilar skull fractures. PMID:19392601

Tubbs, R Shane; Shoja, Mohammadali M; Loukas, Marios; Oakes, W Jerry; Cohen-Gadol, Aaron

2010-01-01

402

Speculative Truth - Henry Cavendish, Natural Philosophy, and the Rise of Modern Theoretical Science  

NASA Astrophysics Data System (ADS)

With a never-before published paper by Lord Henry Cavendish, as well as a biography on him, this book offers a fascinating discourse on the rise of scientific attitudes and ways of knowing. A pioneering British physicist in the late 18th and early 19th centuries, Cavendish was widely considered to be the first full-time scientist in the modern sense. Through the lens of this unique thinker and writer, this book is about the birth of modern science.

McCormmach, Russell

2004-03-01

403

Henry Hurd Rusby: The father of economic botany at the New York Botanical Garden  

Microsoft Academic Search

Henry Hurd Rusby (1855–1940) is one of the outstanding personalities in the history of the New York Botanical Garden (NYBG).\\u000a He played a significant role, not only in the founding of NYBG in 1891, but also in establishing a strong precedent of research\\u000a and exploration in the field of economic botany at the new institution. As a result of Rusby’s

David E. Williams; Susan M. Fraser

1992-01-01

404

Splitting the Difference: Aesthetic Relations in Henry James and Leo Bersani  

Microsoft Academic Search

: As an alternative to psychoanalysis’s aggressive subject\\/object relation, Leo Bersani proposes a more modulated, aesthetic subjectivity. This essay explores Bersani’s concept of aesthetic relations through impressionism’s and realism’s competing demands on the artistic object in Henry James’s “Flickerbridge.” I suggest this 1902 short story can be productively read as a theory of the perspectival shift James was exploring in

Sigi Jöttkandt

2011-01-01

405

Splitting the Difference: Aesthetic Relations in Henry James and Leo Bersani  

Microsoft Academic Search

As an alternative to psychoanalysis’s aggressive subject\\/object relation, Leo Bersani proposes a more modulated, aesthetic subjectivity. This essay explores Bersani’s concept of aesthetic relations through impressionism’s and realism’s competing demands on the artistic object in Henry James’s “Flickerbridge.” I suggest this 1902 short story can be productively read as a theory of the perspectival shift James was exploring in his

Sigi Jöttkandt

2011-01-01

406

William Henry Welch (1850-1934): the road to Johns Hopkins.  

PubMed

William Henry Welch's selection in 1884 as the first faculty member of the new medical school at Johns Hopkins created the invigorating atmosphere that generated the revolutionary changes in medical training and laboratory medicine that transformed medicine in America. Dr. Welch's family traditions, his New England upbringing, Yale education, and German university experience prepared a unique individual to lead American medicine into the 20th century. PMID:21738298

Silverman, Barry D

2011-07-01

407

The Convergence of Transcendental Philosophy and Quantum Physics: Grete Henry-Hermann's 1935 Pioneering Proposal  

Microsoft Academic Search

In the course of 1934, Grete Henry-Hermann, a young German pupil of Leonard Nelson trained in philosophy as well as in mathematics\\u000a and physics, visited Heisenberg in Leipzig, with the intention to call Kant before the tribunal of history, hoping to be able\\u000a to conciliate transcendental philosophy with the new quantum physics. Do Kant's propositions still hold good for a

Léna Soler

408

Human disturbance and trophic status changes in Crystal Lake, McHenry County, Illinois, USA  

Microsoft Academic Search

The paleolimnology (sediment chemistry, 210Pb dating, pollen, and diatoms) of Crystal Lake, McHenry County, Illinois, USA was studied to investigate the impact of European settlement on lake trophic status. Pollen clearly indicates a vegetational shift from Quercus dominance to Ambrosia. 210Pb dating suggests that the Ambrosia rise likely occurs around the 1840's, which is consistent with historical records on the

Yangdong Pan; Richard Brugam

1997-01-01

409

Henry Demarest Lloyd and Business Ethics in Late Nineteenth and Early Twentieth-Century America  

Microsoft Academic Search

This article describes and elucidates the ideas and activities of Henry Demarest Lloyd (1846–1903). The focus is on Lloyd's moralistic approach to social and economic problems, and particularly his concern to redeem America and promote a ‘New Conscience’. In an age of rapid social and economic transformation, Lloyd rejected contemporary celebrations of individualism, self-reliance, laissez-faire and the cult of success.

Michael J. Turner

1994-01-01

410

INTROSPECTIVE PSYCHOLOGY, PURE AND APPLIED: Henry Rutgers Marshall on Pain and Pleasure  

Microsoft Academic Search

Henry Rutgers Marshal (1852–1927), architect and psychologist, in his aesthetic theory opposed the severing of pain from pleasure in neurological theories in the 1890s. He held that pain and pleasure are poles of the same quale of experience. Marshall’s was an introspective psychology, which he used in his architectural criticism and support of the City Beautiful ideal. The practice of

Robert Kugelmann

2001-01-01

411

Henri D. Grissino-Mayer's Ultimate Tree-Ring Web Pages  

NSDL National Science Digital Library

On this definitive site for researchers in the field of dendrochronology, created by Henri Grission-Mayer (formerly of Valdosta State University, Georgia), users will find many interesting facts and beautiful images of ancient tree cross-sections, complete with question and answers. Examples of photos available include a New Mexican juniper dated to 256 B.C., a giant sequoia scarred from a fire in 1297 A.D., and images of tree-ring researchers at work.

Grissino-Mayer, Henri D.

1994-01-01

412

Mineralogical and chemical evolution of the Ernest Henry Fe oxide-Cu-Au ore system, Cloncurry district, northwest Queensland, Australia  

Microsoft Academic Search

The Ernest Henry Cu-Au deposit was formed within a zoned, post-peak metamorphic hydrothermal system that overprinted metamorphosed dacite, andesite and diorite (ca 1740-1660 Ma). The Ernest Henry hydrothermal system was formed by two cycles of sodic and potassic alteration where biotite-magnetite alteration produced in the first cycle formed ca 1514±24 Ma, whereas paragenetically later Na-Ca veining formed ca 1529 +11\\/-8

Geordie Mark; Nicholas H. S. Oliver; Patrick J. Williams

2006-01-01

413

Henry's law constants and micellar partitioning of volatile organic compounds in surfactant solutions  

SciTech Connect

Partitioning of volatile organic compounds (VOCs) into surfactant micelles affects the apparent vapor-liquid equilibrium of VOCs in surfactant solutions. This partitioning will complicate removal of VOCs from surfactant solutions by standard separation processes. Headspace experiments were performed to quantify the effect of four anionic surfactants and one nonionic surfactant on the Henry's law constants of 1,1,1-trichloroethane, tirchloroethylene, toluene, and tetrachloroethylene at temperatures ranging from 30 to 60 C. Although the Henry's law constant increased markedly with temperature for all solutions, the amount of VOC in micelles relative to that in the extramicellar region was comparatively insensitive to temperature. The effect of adding sodium chloride and isopropyl alcohol as consolutes also was evaluated. Significant partitioning of VOCs into miscelles was observed, with the micellar partitioning coefficient (tendency to partition from water into mecelle) increasing according to the following series: trichloroethane < trichloroethylene < toluene < tetrachloroethylene. The addition of surfactant was capable of reversing the normal sequence observed in Henry's law constants for these four VOCs.

Vane, L.M.; Giroux, E.L.

2000-02-01

414

Cr(VI) induces mitochondrial-mediated and caspase-dependent apoptosis through reactive oxygen species-mediated p53 activation in JB6 Cl41 cells  

SciTech Connect

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.

Son, Young-Ok; Hitron, J. Andrew; Wang Xin; Chang Qingshan; Pan Jingju; Zhang Zhuo; Liu Jiankang [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536-0305 (United States); Wang Shuxia [Graduate Center for Nutritional science, College of Medicine, University of Kentucky, Lexington, KY 40536-0305 (United States); Lee, Jeong-Chae [School of Dentistry and 21 Century Education Center for Advanced Public Dental Health (BK 21 program), Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Research Center of Bioactive Materials, Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Shi Xianglin, E-mail: xshi5@email.uky.ed [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536-0305 (United States)

2010-06-01

415

High-titer n-butanol production by clostridium acetobutylicum JB200 in fed-batch fermentation with intermittent gas stripping.  

PubMed

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

Xue, Chuang; Zhao, Jingbo; Lu, Congcong; Yang, Shang-Tian; Bai, Fengwu; Tang, I-Ching

2012-06-08

416

Historical perspective on the Department of Neurosurgery at the Henry Ford Hospital.  

PubMed

The Henry Ford Hospital (HFH) was founded in 1915 as a philanthropic gift from Henry Ford, the automobile magnate and inventor of the Model T. The hospital and its organizational structure represented a nonsectarian facility that would provide care for all members of society. The system was patterned after the newest and most modern medical centers at the time in Europe, Canada, and the United States, including the German Krankenhauser, the Johns Hopkins Hospital, the Mayo Clinic, and the Peter Bent Brigham Hospital in Boston. The HFH grew into the Henry Ford Health System in the 1970s to 1990s, with the acquisition of other hospitals, the development of a multiple-region-based clinic system through southeastern Michigan, and the development of comprehensive, vertically integrated health care systems. The Division of Neurosurgery at HFH was established by Albert Crawford in 1926. The tradition of training residents in neurosurgery began in 1946, and the residency training program was accredited by the American Board of Neurosurgery in 1954. In 1970, the Division of Neurosurgery of the Department of Surgery was combined with the Division of Neurology to create the joint Department of Neurology and Neurosurgery. A separate Department of Neurosurgery was established in 1981. Four individuals have served as chairmen of the Department of Neurosurgery at HFH, i.e., Albert Crawford (1926-1952), Robert Knighton (1952-1978), James Ausman (1978-1991), and Mark Rosenblum (1992 to the present). During the 1980s and 1990s, HFH evolved into the vertically integrated, regionally distributed Henry Ford Health System. Under the current direction of Dr. Rosenblum, the Department of Neurosurgery at HFH has grown to include 11 full-time neurosurgeons, 2 neuro-oncologists, and 3 investigators with Ph.D. degrees and has recently expanded into three additional hospitals in southeastern Michigan, paralleling the growth of the system. The faculty annually treats more than 2,000 cases in all neurosurgical subspecialties, ranging from neuro-oncological surgery, cranial base surgery, radiosurgery, cerebrovascular surgery, epilepsy surgery, treatment of movement disorders, pain and spasticity surgery, pediatric neurosurgery, and neurotrauma treatment to complex instrumentation of the spine. This article chronicles the history of the Henry Ford Health System and the Department of Neurosurgery, its research endeavors, and its residency training program. PMID:11220387

Kole, M K; O'Leary, S T; Malik, G M; Rosenblum, M L

2001-02-01

417

Bianchi Type-II, VIII & IX Cosmological Models with Strange Quark Matter Attached to String Cloud in Brans-Dicke and General Theory of Gravitation  

NASA Astrophysics Data System (ADS)

We have obtained and presented spatially homogeneous Bianchi type-II, VIII & IX cosmological models with strange quark matter attached to string cloud in Brans and Dicke (Phys. Rev. C 71:054905, 1961) scalar tensor theory and general theory of gravitation. Some important features of the models, thus obtained, have been discussed. We noticed that these universes always expand isotropically and the presence of scalar field doesn't affect the geometry of the space-time but changes the matter distribution.

Rao, V. U. M.; Sireesha, K. V. S.

2013-04-01

418

ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS: Generation of Entangled Multi-atom Dicke States in Cavity Quantum Electrodynamics  

NASA Astrophysics Data System (ADS)

We propose a scheme to generate two-atom maximally entangled state in cavity quantum electrodynamics (QED). The scheme can be extended to generation of entangled multi-atom Dicke states if we control the interaction time of atoms with cavity modes. We use adiabatically state evolution under large atom-cavity detuning, so the scheme is insensitive to atomic spontaneous decay. The influence of cavity decay on fidelity and success probability is discussed.

Shu, Jing; Liu, Zhong

2010-06-01

419

Solubility of gases in liquids. 18. High-precision determination of Henry fugacities for argon in liquid water at 2 to 40°C  

Microsoft Academic Search

The solubility of argon in pure liquid water was measured at ca. 100 kPa and from 2 to 40°C using an analytical method characterized by an imprecision of about ±0.05%. From the experimental results, Henry fugacities H2,1(T,Ps,1) (also known as Henry's Law constants or Henry coefficients) at the vapor pressure Ps,1 of water as well as Ostwald coefficients L2,18 at

T. R. Rettich; Rubin Battino; Emmerich Wilhelm

1992-01-01

420

Biological and molecular mechanisms of sulfur mustard analog-induced toxicity in JB6 and HaCaT cells: Possible role of ATM/ATR-cell cycle checkpoint pathway  

PubMed Central

Effective medical treatment and preventive measures for chemical warfare agent sulfur mustard (HD)-caused incapacitating skin toxicity are lacking, owing to 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 analog, 2-chloroethyl ethyl sulfide (CEES)-induced skin cytotoxicity. As compared to 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, ATM at ser1981 and 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 (PI) staining demonstrated that CEES-induced cell death was both necrotic and apoptotic in nature and 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 PARP cleavage coinciding with CEES-caused apoptosis in both cell lines suggested the involvement of 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.

Tewari-Singh, Neera; Gu, Mallikarjuna; Agarwal, Chapla; White, Carl W.; Agarwal, Rajesh

2010-01-01

421

Temperature dependence of Henry's law constants of thirteen polycyclic aromatic hydrocarbons between 4 C and 31 C  

SciTech Connect

An understanding of the temperature dependence of the Henry's law constant for organic contaminant is critical when modeling the transport and fate of these contaminants in the environment. The Henry's law constants for 13 polycyclic aromatic hydrocarbons (PAHs) were experimentally determined between 4 and 31 C using a gas-stripping apparatus. The Henry's law constants ranged between 0.02 {+-} 0.01 Pa m{sup 3}/mol for chrysene at 4 C and 73.3 {+-} 20 Pa m{sup 3}/mol for 2-methylnaphthalene at 31 C. The temperature dependence of each PAH was modeled using the van't Hoff equation to calculate the enthalpy and entropy of phase change. For nine of the PAHs, the present study reports the first experimental measured temperature dependence of their Henry's law constant. The enthalpies of phase change ranged between 35.4 {+-} 1.9 kJ/mol for 1-methylphenanthrene and 100 {+-} 8 kJ/mol for chrysene. These data can be used to extrapolate Henry's law values within the experimental temperature ranges. For all PAHs except benzo[a]fluorene, the temperature dependence can be predicted within a relative standard error {lt}10%.

Bamford, H.A.; Poster, D.L.; Baker, J.E.

1999-09-01

422

Temperature-Dependent Henry's Law Constants of Atmospheric Organics of Biogenic Origin.  

PubMed

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, ?-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 (KH), 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 KH values for isoprene, limonene, ?-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); ?-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 KH values than those of cyclic terpenes and that KH 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

Leng, Chunbo; Kish, J Duncan; Kelley, Judas; Mach, Mindy; Hiltner, Joseph; Zhang, Yunhong; Liu, Yong

2013-09-25

423

Calculation of henry constants for the adsorption of isomeric phenylenediamines on graphitized thermal carbon black  

NASA Astrophysics Data System (ADS)

Henry constants for the adsorption of o- and p-phenylenediamines on the surface of graphitized thermal carbon black within the temperature range 433-479 K were calculated by the molecular statistical method. The parameters of the atom-atom potential function of intermolecular interaction between the nitrogen atom in aniline and isomeric phenylenediamines and the carbon atom of the basal face of graphite were determined. It was shown that an intramolecular H bond influenced the geometry and adsorption properties of o-phenylenediamine.

Terent'ev, A. V.; Varfolomeeva, V. V.; Buryak, A. K.

2009-12-01

424

Perturbation theory in the catalytic rate constant of the Henri-Michaelis-Menten enzymatic reaction.  

PubMed

The Henry-Michaelis-Menten (HMM) mechanism of enzymatic reaction is studied by means of perturbation theory in the reaction rate constant k (2) of product formation. We present analytical solutions that provide the concentrations of the enzyme (E), the substrate (S), as well as those of the enzyme-substrate complex (C), and the product (P) as functions of time. For k (2) small compared to k (-1), we properly describe the entire enzymatic activity from the beginning of the reaction up to longer times without imposing extra conditions on the initial concentrations E ( o ) and S ( o ), which can be comparable or much different. PMID:22926529

Bakalis, Evangelos; Kosmas, Marios; Papamichael, Emmanouel M

2012-08-28

425

Christian Henry Brown (1857-1933) and the Philadelphia Optical College.  

PubMed

Christian Henry Brown, M.D., (1857-1933) was an oculist who operated the Philadelphia Optical College for over forty years. This paper provides a brief biographical sketch of C.H. Brown and a history of the Philadelphia Optical College. The Philadelphia Optical College offered attendance and correspondence courses in optometry, and claimed to have had several thousand graduates. It did not fare well in a rating of optometry schools in the mid-1920s. Brown authored several significant textbooks, most notably Optician's Manual, later retitled Optometrist's Manual. PMID:21466006

Goss, David A

2010-10-01

426

Henry Ingersoll Bowditch (1808-82): American physician, public health advocate and social reformer.  

PubMed

Henry Ingersoll Bowditch, a Bostonian physician from the mid-19th century, lived a passionate life full of commitment and devotion to various noble causes--he was a champion of public health, an advocate for inclusion of women in medicine and a staunch abolitionist, all unpopular social perspectives at that time in medical and political history. Seemingly difficult personality traits including his stubbornness and moralistic outlook were likely 'adaptive' as he confronted the political reality of major institutional change. His interest in statistical trends and environmental influences and his inductive reasoning led to a deeper understanding of consumption (tuberculosis), the widespread diagnostic use of the stethoscope and thoracocentesis. PMID:22319186

Butler, Paul M

2011-11-01

427

Inverse temperature dependence of Henry's law coefficients for volatile organic compounds in supercooled water.  

PubMed

Upon supercooling, water expels volatile organic compounds (VOC), and Henry's law coefficients are increasing concomitant with decreasing temperature. This unexpected observation was found by measuring the VOC partitioning between supercooled water and gas phase in the temperature range from -5 degrees C to -15 degrees C for benzene, toluene, ethlybenzene, m-, p-, o-xylenes (BTEX), methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE). Aqueous standard solutions were analyzed using a static headspace method in combination with gas chromatography/mass spectrometry (GC/MS). Dimensionless Henry's law coefficients (K(AW)) were calculated from measurements of the concentration of the VOCs in the headspace above the standard solutions at temperatures between -25 degrees C and 25 degrees C. The results show that the well known temperature dependence of Henry's law coefficients at temperatures above 0 degrees C is inversed upon decreasing the temperature below 0 degrees C and formation of supercooled water while decreasing the temperature to -15 degrees C. Upon further decrease of the temperature to -25 degrees C freezing of the supercooled water occurs. K(AW) values increase from 0.092 (benzene), 0.099 (toluene), 0.098 (ethylbenzene), 0.117 (m/p-xylene), 0.076 (o-xylene), 0.012 (MTBE) and 0.014 (ETBE at 5 degrees C to 0.298 (benzene), 0.498 (toluene), 0.944 (ethylbenzene), 0.327 (m/p-xylene), 0.342 (o-xylene), 0.029 (MTBE) and 0.041 (ETBE) at -25 degrees C, respectively. Inversion of Henry coefficients upon cooling the aqueous solutions to temperatures below 0 degrees C is explained by the increasing formation of ice-like clusters in the water below 0 degrees C. The VOC are expelled from these clusters resulting in enhanced VOC concentrations in the gas phase upon supercooling. Formation of ice upon further cooling to -25 degrees C results in a further increase of the VOC concentrations in the gas phase above the ice. The findings have implications for the partitioning of VOC in clouds between the gas phase, supercooled water droplets, aerosol particles and ice. PMID:19604535

Sieg, Karsten; Starokozhev, Elena; Schmidt, Martin U; Püttmann, Wilhelm

2009-07-14

428

Henri Wallon's Theory of Early Child Development: The Role of Emotions  

PubMed

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

Veer

1996-12-01

429

Experimental determination of Henry's law constants of trifluoroacetic acid at 278–298 K  

Microsoft Academic Search

Equilibrium partial pressures of trifluoroacetic acid (PCF3C(O)OH) over aqueous trifluoroacetic acid test solutions were determined at 278.15, 288.15, and 298.15K. The concentration of undissociated trifluoroacetic acid (CCF3C(O)OH) in each test solution was determined by means of attenuated total reflection IR spectroscopy and window factor analysis. From the linear relationship between PCF3C(O)OH and CCF3C(O)OH, the Henry's law constant of trifluoroacetic acid

Shuzo Kutsuna; Hisao Hori

2008-01-01

430

Surveyors of the West: William Henry Jackson and Robert Brewster Stanton  

NSDL National Science Digital Library

The New York Public Library has three major digital exhibitions currently running to complement their in-house exhibits. Together, these exhibits constitute a marvelous introduction to Western history via primary documents and images from the era. Surveyors of the West features diaries, photographs, stereographs, and field notes related to the work of William Henry Jackson, a government photographer influential in the establishment of US parks in the West, and Robert Brewster Stanton, a civil and mining engineer who surveyed the Grand Canyon between 1889 and 1890, and who was chief engineer for the Denver Colorado Canyon and Pacific Railroad.

2001-01-01

431

Henry Samueli  

Microsoft Academic Search

With the explosion in the popularity of cable and digital subscriber line modems for high-speed Internet access, the odds are that there will be one of these broadband communications devices in many homes or offices. The odds are that the chips inside the modem will have been designed by Broadcom Corp., and be based on digital signal-processing (DSP) architectures conceived

T. S. Perry

1999-01-01

432

Structure-activity relationships to estimate the effective Henry's law coefficients of organics of atmospheric interest  

NASA Astrophysics Data System (ADS)

The Henry's law coefficient is a key property needed to address the multiphase behaviour of organics in the atmosphere. Methods that can reliably predict the values for the vast number of organic compounds of atmospheric interest are therefore required. The effective Henry's law coefficient H* in air-water systems at 298 K was compiled from literature for 488 organic compounds bearing functional groups of atmospheric relevance. This data set was used to assess the reliability of the HENRYWIN bond contribution method and the SPARC approach for the determination of H*. Moreover, this data set was used to develop GROMHE, a new Structure Activity Relationship (SAR) based on a group contribution approach. These methods estimate logH* with a Root Mean Square Error (RMSE) of 0.38, 0.61, and 0.73 log unit for GROMHE, SPARC and HENRYWIN respectively. The results show that for all these methods the reliability of the estimates decreases with increasing solubility. The main differences among these methods lie in H* prediction for compounds with H* greater than 103 M atm-1. For these compounds, the predicted values of logH* using GROMHE are more accurate (RMSE=0.53) than the estimates from SPARC or HENRYWIN (RMSE=0.98 and 1.12).

Raventos-Duran, T.; Camredon, M.; Valorso, R.; Aumont, B.

2010-02-01

433

Structure-activity relationships to estimate the effective Henry's law constants of organics of atmospheric interest  

NASA Astrophysics Data System (ADS)

The Henry's law constant is a key property needed to address the multiphase behaviour of organics in the atmosphere. Methods that can reliably predict the values for the vast number of organic compounds of atmospheric interest are therefore required. The effective Henry's law constant H* in air-water systems at 298 K was compiled from literature for 488 organic compounds bearing functional groups of atmospheric relevance. This data set was used to assess the reliability of the HENRYWIN bond contribution method and the SPARC approach for the determination of H*. Moreover, this data set was used to develop GROMHE, a new Structure Activity Relationship (SAR) based on a group contribution approach. These methods estimate logH* with a Root Mean Square Error (RMSE) of 0.38, 0.61, and 0.73 log units for GROMHE, SPARC and HENRYWIN respectively. The results show that for all these methods the reliability of the estimates decreases with increasing solubility. The main differences among these methods lie in H* prediction for compounds with H* greater than 103 M atm-1. For these compounds, the predicted values of logH* using GROMHE are more accurate (RMSE = 0.53) than the estimates from SPARC or HENRYWIN.

Raventos-Duran, T.; Camredon, M.; Valorso, R.; Mouchel-Vallon, C.; Aumont, B.

2010-08-01

434

Experimental determination of Henry's law constants of trifluoroacetic acid at 278-298 K  

NASA Astrophysics Data System (ADS)

Equilibrium partial pressures of trifluoroacetic acid ( P C(O)OH) over aqueous trifluoroacetic acid test solutions were determined at 278.15, 288.15, and 298.15 K. The concentration of undissociated trifluoroacetic acid ( C C(O)OH) in each test solution was determined by means of attenuated total reflection IR spectroscopy and window factor analysis. From the linear relationship between P C(O)OH and C C(O)OH, the Henry's law constant of trifluoroacetic acid ( KH) at 298.15 K was determined to be 5800±700 mol dm -3 atm -1 and KH at temperature T in K was determined to be KH=5780 exp[-4120×(1/298.15-1/ T)] in mol dm -3 atm -1. The KH value at 298.15 K was 0.65 times the reported value [Bowden, D.J., Clegg, S.L., Brimblecombe, P., 1996. The Henry's law constant of trifluoroacetic acid and its partitioning into liquid water in the atmosphere. Chemosphere 32, 405-420] for p Ka=0.47 and it was equal to that for p Ka=0.2.

Kutsuna, Shuzo; Hori, Hisao

435

Henry Jacob Bigelow (1818-1890): his contributions to anatomy and surgery.  

PubMed

There have been many advances in the medical world over time that have greatly contributed to ameliorating and prolonging human life. The employment of surgical anesthesia is arguably one of the greatest medical discoveries of all time, and has immensely broadened our ability to treat the ill. While Dr. Henry Jacob Bigelow (1818-1890) was not the inventor of anesthesia, he was the first to publish and advocate its use in the 19th century (Bigelow and Bigelow [1894] A Memoir of Henry Jacob Bigelow, Boston: Little, Brown, and Company; Harrington and Mumford [1905] The Harvard Medical School: A History, Narrative and Documentary, Vol 2, New York: Lewis Publishing Company). Bigelow also contributed to revolutionizing the fields of orthopedic and urologic surgery, publishing extensive research on subjects where there was previously very little knowledge, and even developing new techniques. He also impacted the field of neuropsychiatry in his publication regarding Phineas Gage. His contributions to the medical field have set him apart as one of the most influential and famous surgeons of America in the 19th century. Anatomically, he will be remembered eponymously for his iliofemoral ligament and septum in the femur. PMID:21412854

Malenfant, Jason; Robitaille, Martin; Schaefer, Jamie; Tubbs, R Shane; Loukas, Marios

2011-03-15

436

Detroit Publishing Company Online Exhibit: Henry Ford Museum and Greenfield Village  

NSDL National Science Digital Library

From 1895 to 1924, before movies, television, and the Internet fulfilled Americans' desire for pictures, The Detroit Publishing Company (DPC) sent photographers all over the country and to many parts of the world to bring back images to be distributed as prints, postcards, souvenirs, lantern slides, and advertisements. While thousands of DPC images are digitized in the Library of Congress American Memory collection, this online exhibit from the Henry Ford Museum and Greenfield Village provides a look at another slice of the collection, primarily views of the Western United States, both in cities and wilderness, such as cable cars and earthquake damage in San Francisco; a New Mexican Pueblo; or the Lone Star Geyser, Yellowstone National Park. The site is arranged for easy browsing, with groups of 20 - 40 photographs arranged into categories such as Cityscapes, Everyday Life, Michigan Views, and Nature. Many of the photographs are by William Henry Jackson, probably the best known 19th century landscape photographer. Try the "DPC History" and "How Did they Do It?" sections of the Web site for more information about Jackson, other DPC photographers, and how DPC created and distributed the pictures they made.

2002-01-01

437

Determination of Henry's law constant for methyl tert-butyl ether (MTBE) at groundwater temperatures.  

PubMed

The dimensionless Henry's law constant was determined for methyl tert-butyl ether (MTBE) at six temperatures (3, 5, 10, 15, 20 and 25 degrees C) by using a thermostatted flask (430 ml) containing an aqueous MTBE solution. The ratio between the gas phase and the water phase in the flask was approximately 1.7:1. The aim of this study was to acquire data needed to model the behaviour of MTBE at groundwater conditions. The dimensionless Henry's law constant at 10 degrees C is approximately 0.01 but is 0.03 at 25 degrees C. This is important for modelling MTBE because the variation of vaporization cannot be disregarded at groundwater temperatures. In a second experiment the water solubility of MTBE was determined to be 62.1 g/l at 5 degrees C and 35.5 g/l at 20 degrees C). The high solubility at low temperatures could cause MTBE plumes from spills (fuel accidents etc.) to spread rapidly. PMID:14602101

Fischer, A; Müller, M; Klasmeier, J

2004-02-01

438

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

|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…

Fraser, Cary

2009-01-01

439

Henry's law constants and mass transfer coefficients for methyl bromide and 1,3-dichloropropene applied to Florida sandy field soil  

Technology Transfer Automated Retrieval System (TEKTRAN)

Methyl bromide (MBr) is scheduled to be phased out as a preplant soil fumigant in the USA by 2005 except for critical uses. In this study, physical constants related to distribution and retention of MBr as well as (Z)- and (E)-1,3-dichloropropene (1,3-D) isomers in soil were compared. The Henry’s La...

440

La Fonction Receptacle: Du Batiment d'Essais et de Mesures 'Henri Poincare' au Batiment d'Essais et de Mesures 'Monge' (Receptacle Function: From the Henri Poincare Test and Measurement Ship to the Monge Test and Measurement Ship).  

National Technical Information Service (NTIS)

The Henry Poincare receptacle ship created at the same time as the CEL (French acronym for Les Landes test center (France)) for reception and acquisition of measurements during the final phase of ballistic missile flights, is described. The evolution of m...

Y. Tanguy

1991-01-01

441

Experimentally feasible set of criteria detecting genuine multipartite entanglement in n-qubit Dicke states and in higher-dimensional systems  

SciTech Connect

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.

Huber, Marcus; Erker, Paul; Schimpf, Hans; Gabriel, Andreas [Faculty of Physics, University of Vienna, Boltzmanngasse 5, AT-1090 Vienna (Austria); Hiesmayr, Beatrix [Faculty of Physics, University of Vienna, Boltzmanngasse 5, AT-1090 Vienna (Austria); Research Center for Quantum Information, Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, SK-84511 Bratislava (Slovakia)

2011-04-15

442

Tilting at doctrine in a changing world: the three editions of Henry Reynolds’ The Law of the Land  

Microsoft Academic Search

Henry Reynolds’ The Law of the Land was first published in 1987 and advanced a radical reassessment of the history of property ownership in Australia. Reynolds’ work challenged the prevailing legal and historical orthodoxy under which it was assumed that as a consequence of colonisation, the Indigenous peoples of Australia no longer enjoyed any enforceable rights to land arising from

David Ritter

2008-01-01

443

Teacher as Actor--Henry David Thoreau--From Room One-Eleven to Walden Pond and Beyond.  

ERIC Educational Resources Information Center

|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…

Barto, David

444

Alluvial architecture and predictive modeling of the Late Cretaceous John Henry member, Straight Cliffs formation, southern Utah  

Microsoft Academic Search

Five detailed measured sections (each >175 m), two outcrop gamma ray logs, 2100 paleocurrent measurements, and detailed facies interpretation of high-resolution composite photographs were used to document the vertical and lateral variations of the alluvial architecture of the John Henry Member of the Upper Cretaceous Straight Cliffs Formation (southwest Kaiparowits Plateau, southern Utah). These data interpretations correlate to 24 measured

Jared Thomas Gooley

2010-01-01

445

All Are Worthy to Know the Earth: Henry De la Beche and the Origin of Geological Literacy  

ERIC Educational Resources Information Center

|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…

Clary, Renee M.; Wandersee, James H.

2009-01-01

446

A Vision for the Future: Henry G. Bennett Memorial Library, Southeastern Oklahoma State University Strategic Plan, 2002-2007.  

ERIC Educational Resources Information Center

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…

Davis, Dorothy

447

Mitigation of severe water stress by fruit thinning in ‘O’Henry’ peach: Implications for fruit quality  

Microsoft Academic Search

Fruit thinning can be used to relieve water stress in peach but it is not known how fruit quality will respond under water limited conditions. To elucidate this, we applied, over the growing seasons of 2003 and 2004, irrigation and fruit thinning treatments to ‘O’Henry’ peach at the onset of Stage III of fruit development. The treatments were full irrigation

G. Lopez; M. H. Behboudian; X. Vallverdu; M. Mata; J. Girona; J. Marsal

2010-01-01

448

Creative Change: The Life and Work of Four Novelists: Jane Austen, E. M. Forster, Barbara Pym, and Henry Roth  

Microsoft Academic Search

Robert Kastenbaum has argued that we need to take a life-span approach to the lives of artists in order to determine what factors affected their creativity. To that end, I briefly review the lives of four writers, Jane Austen, E. M. Forster, Barbara Pym, and Henry Roth. Each followed a different pattern: Austen wrote productively until her early death; Forster

Anne M. Wyatt-Brown; E. M. Forster; Barbara Pym; Henry Roth

1998-01-01

449

"Extraordinary Understandings" of Composition at the University of Chicago: Frederick Champion Ward, Kenneth Burke, and Henry W. Sams  

ERIC Educational Resources Information Center

|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…

Beasley, James P.

2007-01-01

450

Planar chiral [2.2]paracyclophane-based bis(thiourea) catalyst: application to asymmetric Henry reaction.  

PubMed

A bis(thiourea) organocatalyst with a planar chiral [2.2]paracyclophane backbone has been synthesized and applied to the Henry reaction. The obtained high reactivity and enantioselectivity from the reaction of aromatic aldehydes with nitroalkanes suggested the significant potential of [2.2]paracyclophane to serve as the backbone of the organocatalyst. PMID:23558930

Kitagaki, Shinji; Ueda, Takahiro; Mukai, Chisato

2013-04-05

451

SENSORINEURAL HEARING PROCESSES AND DISORDERS, HENRY FORD HOSPTIAL INTERNATIONAL SYMPOSIUM (DETROIT, MICHIGAN, MARCH 25-27, 1965).  

ERIC Educational Resources Information Center

|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…

GRAHMA, A. BRUCE, ED.

452

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

|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…

Ji, Chang; Boisvert, Susanne M.; Arida, Ann-Marie C.; Day, Shannon E.

2008-01-01

453

All Are Worthy to Know the Earth: Henry De la Beche and the Origin of Geological Literacy  

ERIC Educational Resources Information Center

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…

Clary, Renee M.; Wandersee, James H.

2009-01-01

454

The “Reversal of Generations” Phenomenon as Illustrated by the Lives of John Henry Newman and Abraham Lincoln  

Microsoft Academic Search

The psychoanalytic concept of the “reversal of generations,” in which one identifies with a grandparent as the primary parental authority in one’s life, is used to shed light on the role that John Henry Newman’s paternal grandmother played in his decision to become a priest in the Church of England and in his subsequent conversion to the Church of Rome;

Donald Capps

2006-01-01

455

Writing, self?realization and community: Henry Muoria and the creation of a nationalist public Sphere in Kenya  

Microsoft Academic Search

This paper traces the career of the Kenyan publicist and intellectual, Henry Muoria (1914–1997). Muoria was an active journalist, a friend and press secretary of Kenya's future president Jomo Kenyatta and, from 1945 to 1952, the editor of a nationalist newspaper Mumenyereri, written in Gikuyu, one of Kenya's major languages. In October 1952, when the British declared the Emergency in

Bodil Folke Frederiksen

2006-01-01

456

Basic assumptions in the Virginia ratification debates: Patrick Henry vs. James Madison on the nature of man and reason  

Microsoft Academic Search

This study examines the assumptions about the nature of man and the role of reason that were reflected in the speeches of Patrick Henry and James Madison in the Virginia Ratification Convention on the Federal Constitution. These assumptions constitute a portion of what was philosophically and rhetorically at issue between the Antifederalist and Federalist leaders and offer a possible explanation

Lois J. Einhorn

1981-01-01

457

"Young People Are No Longer at Risk--They Are the Risk": Henry Giroux's "Youth in a Suspect Society"  

ERIC Educational Resources Information Center

|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…

McClennen, Sophia A.

2012-01-01

458

What is the phylogenetic placement of Dipteronia dyerana Henry? An example of plant species placement based on nucleotide sequences  

Microsoft Academic Search

DNA sequence data have been widely used to evaluate species delimitations and examine infraspecific relationships. However, species placements inferred from different nucleotide sequences are frequently in conflict. As an example of plant species placement based on nucleotide sequences, the phylogenetic placement of Dipteronia dyerana Henry (Aceraceae) was analyzed in the present study. The study species included eight Acer species (from

J. Yang; S. Li

2010-01-01

459

Disposable Youth/Damaged Democracy: Youth, Neoliberalism, and the Promise of Pedagogy in the Work of Henry Giroux  

ERIC Educational Resources Information Center

|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…

Robbins, Christopher G.

2012-01-01

460

THE BIOLOGIST AS PSYCHOLOGIST: HENRY FAIRFIELD OSBORN'S EARLY MENTAL ABILITY INVESTIGATIONS.  

PubMed

In the early 1880s, biologist Henry Fairfield Osborn conducted some of the first questionnaire research in American psychology. This article details how he came to distribute Francis Galton's questionnaire on mental imagery in the United States, as well as how he altered it to suit his own burgeoning psychological research interests. The development and circulation of questionnaires at the very beginning of American scientific psychology, first by Osborn and later by G. Stanley Hall, is discussed in terms of the new psychology's often-overlooked methodological plurality. Further, Osborn's late nineteenth century interest in individual variation and group differences in mental imagery ability are discussed in relation to his pervasive educational and social concerns, as well as his eventual status as a prominent eugenicist in the twentieth century United States. This research into mental imagery ability foreshadows the eugenic-oriented intelligence testing that developed in the early twentieth century. PMID:22589139

Young, Jacy L

2012-05-15

461

Henry Cuthbert Bazett (1885-1950)--the man behind the QT interval correction formula.  

PubMed

The "Bazett formula" is used for correcting the observed QT interval and is named after Henry Cuthbert Bazett who was born in England in 1885. He studied medicine and worked in Oxford and served in the British Medical Corps during World War I. In 1920, Bazett published his seminal paper on the different intervals length of the electrocardiogram recordings in a small group of healthy individuals, and proposed a formula for correcting the QT length for heart rate. Later, he moved to the University of Pennsylvania, in Philadelphia, and from 1931 until his death in 1950, he served as head of the Department of Physiology and a leader of the American Society of Physiology. Bazett's scientific work was largely concerned with temperature control, circulation, and blood volume, and he contributed greatly to the study of circulation in humans by using invasive catheterization. PMID:21091739

Roguin, Ariel

2010-11-22

462

Why Henry III of Navarre's Hair Probably did not Turn White Overnight  

PubMed Central

Although a rare event, sudden whitening of hair (canities subita) has reportedly affected a number of well-known historical figures, usually in relation to dramatic events in their lives. Although early accounts are substantiated by more recent case reports in scientific literature, we suspect that the phenomenon is not only used as a literary means in fiction, with the aim of dramatizing, but probably also in historical accounts. For this purpose, we examine the case history of Henry III of Navarre who allegedly turned white on the evening of the Saint Bartholomew’s day massacre, and challenge this claim, due to inconsistencies in his biography, with the current pathophysiological understanding of canities subita.

Navarini, Alexander A; Trueb, Ralph M

2010-01-01

463

Henry Pritchett and his introduction to the Flexner Report of 1910.  

PubMed

This article provides historical background on Henry S. Pritchett, first president of the Carnegie Foundation for the Advancement of Teaching (CFAT), analysis of his introduction to Abraham Flexner's 1910 report on medical education, and discussion of the major role that Pritchett played in conceiving the study on which the Flexner Report is based and his advocacy of the report's findings. The authors examine Pritchett's career as a scientist, scholar, and administrator. A textual analysis of the introduction to the Flexner Report demonstrates Pritchett's unique contributions to the report and how they complement Flexner's perspectives and conclusions. Finally, the authors discuss the significance of Pritchett's introduction, his rhetorical choices, and Pritchett's and CFAT's subsequent advocacy activities to improve medical education. PMID:20881820

Kanter, Steven L; Groce, Victoria A; Littleton, Beth; Gunderman, Richard B

2010-11-01

464

Why Henry III of Navarre's Hair Probably did not Turn White Overnight.  

PubMed

Although a rare event, sudden whitening of hair (canities subita) has reportedly affected a number of well-known historical figures, usually in relation to dramatic events in their lives. Although early accounts are substantiated by more recent case reports in scientific literature, we suspect that the phenomenon is not only used as a literary means in fiction, with the aim of dramatizing, but probably also in historical accounts. For this purpose, we examine the case history of Henry III of Navarre who allegedly turned white on the evening of the Saint Bartholomew's day massacre, and challenge this claim, due to inconsistencies in his biography, with the current pathophysiological understanding of canities subita. PMID:21188015

Navarini, Alexander A; Trüeb, Ralph M

2010-01-01

465

The inertia of sex: Henry Adams on family and the politics of unconditional love.  

PubMed

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

Duff, Brian

2010-01-01

466

A new approach to a century-old problem: Henri-Michaelis-Menten enzyme kinetics  

NASA Astrophysics Data System (ADS)

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.

Berberan-Santos, Mário N.

2012-12-01

467

Henry' law and gaz phase disappearance solved as a complementarity problem  

NASA Astrophysics Data System (ADS)

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).

Ben Gharbia, I.; Gilbert, Jean-Charles; Jaffré, Jérômé

2010-05-01

468

Style and non-style in anatomical illustration: From Renaissance Humanism to Henry Gray  

PubMed Central

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.

Kemp, Martin

2010-01-01

469

Style and non-style in anatomical illustration: From Renaissance Humanism to Henry Gray.  

PubMed

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

Kemp, Martin

2010-02-01

470

The Impact of the Henry Draper Catalogue on 20th-century Astronomy  

NASA Astrophysics Data System (ADS)

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.

Welther, B. L.

1999-12-01

471

Temperature dependencies of the Henry's law constant and the aqueous phase dissociation constant of bromine chloride  

SciTech Connect

Modeling ozone depletion observed in the Arctic troposphere requires mass transport of halogen species between the aqueous and the gas phases, which is proportional to its Henry's Law constant (H{sub x}). UV measurements are made in both the aqueous and gas phases to determine the solubility (H{sub BrCl} = [BrCl(aq)]/[BrCl(g)]RT) of BrCl (279--299 K). The gas-phase absorbance spectrum (330--450 nm, 1 nm intervals) is fit for [BrCl(g)], [Br{sub 2}(g)], and [Cl{sub 2}(g)], while the absorbance value at 343 nm is used to determine [BrCl(aq)] (and [BrCl{sub 2}{sup {minus}}]). Dissociation (K{sub aq} = [Br{sub 2}(aq)][Cl{sub 2}(aq)]/[BrCl(aq)]{sup 2}) data are obtained from K{sub aq} = H{sub Cl2}H{sub Br2}K{sub g}/H{sub BrCl}{sup 2} where H{sub Cl2}, H{sub Br2}, and K{sub g} have analogous definitions to H{sub BrCl} and K{sub aq}. Comparison of Henry's Law constants in Table 2 reveals that the order of solubility at 298.2 is BrCl > Br{sub 2} {much{underscore}gt} Cl{sub 2}. At temperatures relevant to the Arctic, BrCl is much more soluble than Br{sub 2} because of differences in {Delta}H{degree}. Consequently, the relative flux of BrCl from the aqueous to the gas phase should not be as large as that of Br{sub 2}. Comparison of dissociation constants in Table 2 reveals the relatively high degree of association of BrCl with H{sub 2}O molecules in the aqueous phase.

Bartlett, W.P.; Margerum, D.W.

1999-10-01

472

Cecilia Payne-Gaposchkin, Henry Norris Russell Lecture: Fifty Years of Novae  

NASA Astrophysics Data System (ADS)

It is easy to pick out my most memorable meeting of the AAS: the 149th meeting held in January, 1977, and hosted by the University of Hawaii, in Honolulu, HI. It was the meeting at which two traditions of the Society were broken, and we moved into the era of equal opportunity for women astronomers. Cecilia Payne-Gaposchkin received the highest award of the AAS: the Henry Norris Russell Lectureship. This award had never before been available to women, otherwise Cecilia would, years earlier, have been honored for the many achievements in her lifetime of renowned astronomical research. And I, the first woman to be elected President of the AAS, had the honor of presenting the illuminated scroll to Cecilia, and of introducing her on the platform where she delivered the Henry Norris Russell Prize Lecture, entitled ``Fifty Years of Novae"(1) . Cecilia opened by comparing the experience of young and old scientists in achieving exciting results from their research, and then led us through the history of the discoveries of and about some famous novae. She described the physical picture that emerged from studies of their light curves, their spectra, and the discovery of their binary nature. Three important tables were included, listing data on cataclysmic binaries (dwarf novae) and their link to the nova phenomenon in general. She recalled that she and Sergei Gaposchkin had hesitated between the names catastrophic and cataclysmic for the dwarf novae, and decided on the latter, from the dictionary definitions of those two terms: ``a cataclysm is a great and general flood" while a catastrophe ``is a final event". The nova phenomenon is recurrent, as are the dwarf novae, and both involve an outpouring of a flood of energy. She concluded by describing her 50 years' experience with novae as presenting ``the contemporary portrait of a nova", rather than a final picture, and by forecasting that the next 50 years of discovering and studying novae will be as full of surprises as the last. (1) Cecilia H. Payne-Gaposchkin, 1977, AJ, 82, 665.

Burbidge, E. M.

1999-05-01

473

Discharge ratings for control structures at McHenry Dam on the Fox River, Illinois  

USGS Publications Warehouse

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)

Fisk, G. G.

1988-01-01

474

Race and Racism in Contemporary Cuban Art: a conversation with Queloides curators Alejandro de la Fuente and Elio Rodríguez Valdés, moderated by Henry Louis Gates, Jr  

Microsoft Academic Search

Henry Louis Gates, Jr. engages curators Elio Rodrŕguez Valdés and Alejandro de la Fuente in conversation about Queloides, an exhibition that explores the social and cultural scars of racism in contemporary Cuba.

Alejandro de la Fuente; Elio Rodríguez Valdés; Henry Louis Gates Jr

2012-01-01

475

Comments, with reply, on `Predicting source-code complexity at the design state' by S. Henry and C. Selig  

Microsoft Academic Search

The commenter objects to the claim made by the authors of the above-mentioned article (see ibid., vol.7, no.2, p.36-44, 1990) that Halstead's E (effort) metric has been extensively validated and to a lack of precise definition for units of `elementary mental discrimination.' With regard to the first point, S. Henry points out that since E seems to give an indication

N. S. Coulter

1990-01-01

476

V-Mail Written by Henry W. Stadnicki to the Bryant College Service Club Dated October 17, 1942  

Microsoft Academic Search

[Transcription begins] S\\/Sgt. Henry Stadnicki Finance Office 51st Troop Carrier Group A.P.O. New York, N. Y. October 17, 1942\\u000aBryant Service Club Bryant College Hope Street Providence Rhode Island U. S. A.\\u000aCheerio!\\u000a“Thanks a million.”….that’s about all I can say to reply for your kind thoughts for we boys in the service, and I sure do mean what I

Henry J. Stadnicki

1942-01-01

477

Measurements of the Henry's Law Coefficients of 2Methyl3-buten-2-ol, Methacrolein, and Methylvinyl Ketone  

Microsoft Academic Search

Using an equilibrium headspace technique, Henry's law coefficients were measured for methacrolein (H = 6.5 ± 0.7 M atm-1) and methylvinyl ketone (41 ± 7.0 M atm-1) in water at 25 °C. In addition, 2-methyl-3-buten-2-ol was studied at 30 °C in water and in an aqueous ionic solution representative of plant tissue. Similar values were found in deionized water (65

Laura T. Iraci; Bradly M. Baker; Geoffrey S. Tyndall; John J. Orlando

1999-01-01

478

Real-world automotive emissions—Summary of studies in the Fort McHenry and Tuscarora mountain tunnels  

Microsoft Academic Search

Motor vehicle emission rates of CO, NO, NOx, and gas-phase speciated nonmethane hydrocarbons (NMHC) and carbonyl compounds were measured in 1992 in the Fort McHenry Tunnel under Baltimore Harbor and in the Tuscarora Mountain Tunnel of the Pennsylvania Turnpike, for comparison with emission-model predictions and for calculation of the reactivity of vehicle emissions with respect to O3 formation. Both tunnels

William R. Pierson; Alan W Gertler; Norman F. Robinson; John C. Sagebiel; Barbara Zielinska; Gary A. Bishop; Donald H. Stedman; Roy B. Zweidinger; William D. Ray

1996-01-01

479

A Convergence of Book History and Literary Criticism: CaseStudy: Henry Lawson in 1890s Sydney  

Microsoft Academic Search

This essay is a literary case-study of the short-story writer Henry Lawson in 1890s Sydney. A book-historical habit of attention to the material circumstances of the original productions is brought to bear. Once the historical and biographical background is established, the essay is shaped around two exemplary acts of Lawson reception, which are simultaneously examples of traditional literary-critical discourse getting

Paul Eggert

2011-01-01

480

A Convergence of Book History and Literary Criticism: CaseStudy: Henry Lawson in 1890s Sydney  

Microsoft Academic Search

:This essay is a literary case-study of the short-story writer Henry Lawson in 1890s Sydney. A book-historical habit of attention to the material circumstances of the original productions is brought to bear. Once the historical and biographical background is established, the essay is shaped around two exemplary acts of Lawson reception, which are simultaneously examples of traditional literary-critical discourse getting

Paul Eggert

2011-01-01

481

Henry's law constant of hydrocarbons in air–water system: The cavity ovality effect on the non-electrostatic contribution term of solvation free energy  

Microsoft Academic Search

In this study, a quantitative structure-property relationship (QSPR) model for the prediction of Henry's law constants of aliphatic hydrocarbons in air-water system has been developed, based on a data-set of 189 compounds. The well-known linear thermodynamic relation between the logarithm of Henry's law constant and solvation free energy has been used for developing the model. It is emphasised that the

H. Modarresi; H. Modarress; J. C. Dearden

2005-01-01

482

Genetic comparison of the head of Henri IV and the presumptive blood from Louis XVI (both Kings of France).  

PubMed

A mummified head was identified in 2010 as belonging to Henri IV, King of France. A putative blood sample from the King Louis XVI preserved into a pyrographically decorated gourd was analyzed in 2011. Both kings are in a direct male-line descent, separated by seven generations. We have retrieved the hypervariable region 1 of the mitochondrial DNA as well as a partial Y-chromosome profile from Henri IV. Five STR loci match the alleles found in Louis XVI, while another locus shows an allele that is just one mutation step apart. Taking into consideration that the partial Y-chromosome profile is extremely rare in modern human databases, we concluded that both males could be paternally related. The likelihood ratio of the two samples belonging to males separated by seven generations (as opposed to unrelated males) was estimated as 246.3, with a 95% confidence interval between 44.2 and 9729. Historically speaking, this forensic DNA data would confirm the identity of the previous Louis XVI sample, and give another positive argument for the authenticity of the head of Henri IV. PMID:23283403

Charlier, Philippe; Olalde, Iñigo; Solé, Neus; Ramírez, Oscar; Babelon, Jean-Pierre; Galland, Bruno; Calafell, Francesc; Lalueza-Fox, Carles

2012-12-30

483

Computational evaluation of Henry's constants and isosteric heats of sorption for Lennard-Jones sorbates in Na-Y zeolite  

NASA Astrophysics Data System (ADS)

Henry's constants and isosteric heats of sorption at infinite dilution are calculated for Lennard-Jones sorbates, including the rare gases Ar, Kr and Xe, in Na-Y zeolite. Isosteric heats of sorption are calculated as a function of sorbate size by molecular dynamics (MD) as well as from the temperature dependence of Henry's constants. The MD approach samples the low potential energy regions which form part of the dynamically connected pore space. In contrast, the Henry's constants are evaluated from the infinite dilution limit of the Widom particle insertion method and therefore can, in principle, sample all available, low potential energy pore regions regardless of dynamical connectivity. We show that the difference in the results obtained by the two approaches depends significantly on sorbate size. For a certain range in the sorbate size parameter, the extent of consistency between the two approaches will be sensitive to both temperature and the MD run lengths, providing an interesting illustration of the distinction between available and dynamically connected pore volumes.

Kar, Sudeshna; Chakravarty, C.

484

Comparing and interpreting three-dimensional fabric results, Henry Mountains porphyry, Utah, U.S.A.  

NASA Astrophysics Data System (ADS)

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.

Horsman, E.; Ketcham, R. A.

2006-12-01

485

Two-relaxation-time lattice Boltzmann method for the anisotropic dispersive Henry problem  

NASA Astrophysics Data System (ADS)

This study develops a lattice Boltzmann method (LBM) with a two-relaxation-time collision operator (TRT) to cope with anisotropic heterogeneous hydraulic conductivity and anisotropic velocity-dependent hydrodynamic dispersion in the saltwater intrusion problem. The directional-speed-of-sound technique is further developed to address anisotropic hydraulic conductivity and dispersion tensors. Forcing terms are introduced in the LBM to correct numerical errors that arise during the recovery procedure and to describe the sink/source terms in the flow and transport equations. In order to facilitate the LBM implementation, the forcing terms are combined with the equilibrium distribution functions (EDFs) to create pseudo-EDFs. This study performs linear stability analysis and derives LBM stability domains to solve the anisotropic advection-dispersion equation. The stability domains are used to select the time step at which the lattice Boltzmann method provides stable solutions to the numerical examples. The LBM was implemented for the anisotropic dispersive Henry problem with high ratios of longitudinal to transverse dispersivities, and the results compared well to the solutions in the work of Abarca et al. (2007).

Servan-Camas, Borja; Tsai, Frank T.-C.

2010-02-01

486

Thomas Henry Storey, D.O., D.C. 1843 to 1923.  

PubMed

Who was Thomas Henry Storey? Dedicated healer or charlatan? A danger to his patients or hero to the profession? He graduated from the Palmer School and Infirmary of Chiropractic in 1901. One of the largest chiropractic colleges, the Los Angeles College of Chiropractic, would be founded by one of his patients in 1910 and incorporated in 1911. He led the founder of chiropractic on his first expedition to Los Angeles. Thomas' seventy-nine year life span took him from Canada through the north central United States to the West Coast from Washington to California and south into Mexico. He was, at various times, a taxidermist, a farmer and, in later years, a rancher. He studied and practiced many types of healing and even operated a chiropractice school for a time. He invented the most ubiquitous of all chiropractic equipment, the bifid table. Whether he desired it or not, Thomas was often thrust into the spotlight, usually under less than admirable circumstances. Even in death, the remnants of his life remained a complicated morass that took sixteen years to resolve in the courts. It is hoped this article will shine some light on a colorful chiropractic pioneer who has been shrouded in a veil of mystery. PMID:11624129

Smith, B A

1999-12-01

487

The pleasures and perils of prophetic advocacy: Henry E. Sigerist and the politics of medical reform.  

PubMed Central

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

Fee, E

1996-01-01

488

Water in sand and gravel deposits in McHenry County, Illinois  

SciTech Connect

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.

Nicholas, J.R.; Krohelski, J.T.

1984-01-01

489

New Quartz Oscillator Switching Method for Nano-Henry Range Inductance Measurements  

PubMed Central

This article introduces a new method for nano-Henry inductance measurements at the frequency of 4.999 MHz with a single quartz crystal oscillating in the switching oscillating circuit. The real novelty of this method, however, lies in a considerable reduction of the temperature influence of AT-cut crystal frequency change in the temperature range between 0 °C and 50 °C through a switching method which compensates for the crystal’s natural temperature characteristics. This allows for the compensation of any influences on the crystal such as the compensation of the non-linear temperature characteristics and the ageing of both the crystal and other oscillating circuit elements, as well as the reduction of the output frequency measurement errors with the help of an additional reference frequency. The experimental results show that the switching method greatly improves the measurement of small inductance changes in the range between ?H and nH, allowing as a result high-precision measurements (?0.35 fH) in this range.

Matko, Vojko; Jezernik, Karel

2012-01-01

490

Inspiring engineering minds to advance human health: the Henry Samueli School of Engineering's Department of BME.  

PubMed

The growth of biomedical engineering at The Henry Samueli School of Engineering at the University of California, Irvine (UCI) has been rapid since the Center for Biomedical Engineering was first formed in 1998 [and was later renamed as the Department of Biomedical Engineering (BME) in 2002]. Our current mission statement, “Inspiring Engineering Minds to Advance Human Health,” serves as a reminder of why we exist, what we do, and the core principles that we value and by which we abide. BME exists to advance the state of human health via engineering innovation and practices. To attain our goal, we are empowering our faculty to inspire and mobilize our students to address health problems. We treasure the human being, particularly the human mind and health. We believe that BME is where minds are nurtured, challenged, and disciplined, and it is also where the health of the human is held as a core mission value that deserves our utmost priority (Figure 1). Advancing human health is not a theoretical practice; it requires bridging between disciplines (engineering and medicine) and between communities (academic and industry). PMID:23008843

Lee, Abraham; Wirtanen, Erik

2012-07-01

491

Dick Crane's California Days  

NASA Astrophysics Data System (ADS)

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.

Holbrow, Charles H.

2011-03-01

492

Moby-Dick  

Microsoft Academic Search

On board the whaling ship Pequod a crew of wise men and fools, renegades and seeming phantoms is hurled through treacherous seas by a crazed captain hell-bent on hunting down the mythic White Whale. Melville transforms the little world of the whale-ship into a crucible where mankind's fears, faith and frailties are pitted against a relentless fate. Teeming with ideas

Herman Melville

2005-01-01

493

Apatite (U-Th)/He Thermochronology from the Henry Mountains Laccolith Complex, Southeastern Utah, USA  

NASA Astrophysics Data System (ADS)

The Henry Mountains are one of several laccolith-cored ranges on the Colorado Plateau that clearly preserve contact and structural relationships between Oligocene intrusions and the thick (~2.5 km) late Paleozoic and Mesozoic sedimentary package, which locally upwarped to accommodate laccolith emplacement. Here, we use the Henrys not only to add to the understanding of the thermal and geomorphic evolution of the Colorado Plateau, but also as a laboratory to explore possible links between pluton emplacement, localized rock uplift and exhumation. Published hornblende 40Ar/39Ar ages indicate intrusion between 31 and 23 Ma. The range comprises five main peaks (Ellen, Pennell, Hillers, Ellsworth and Holmes), each cored by a central laccolith and satellite intrusions emplaced at varying stratigraphic levels throughout the range. Regional stratigraphic correlation suggests the Mt. Hillers laccolith, which intruded the Permain Cutler Group, was at the time of emplacement overlain by at least the entire ~2.5 km Permian-Cretaceous sedimentary package. On the south side of Mt. Hillers these country rocks dip vertically, folded against the side of the main laccolith body and ramped at least one kilometer above local baselevel for these units; this is the classic example of localized uplift as a primary accommodation mechanism for magma emplacement, and at such shallow depths this roof lifting was surely itself accommodated by surface uplift and probably erosion. Despite these intriguing uplift indicators, apatite (U-Th)/He (AHe) dates from a 600 m vertical profile in these country rock sandstones and interbedded porphyry sills are nearly all 10-14 Ma, significantly younger than the age of emplacement and localized uplift. These data are consistent with intrusion at depths at least as deep as the AHe partial retention zone (PRZ; >~50-70°C, >~2-3 km), which agrees with stratigraphic estimates of emplacement depth. Also consistent with these data is cooling and exhumation of these rocks after rapid post-intrusion thermal relaxation with two end-member scenarios: (1) slow steady cooling through the Neogene, or (2) residence in the PRZ through the late Miocene, followed by rapid cooling. All samples analyzed show positive date - effective uranium (eU) correlations amongst single grain aliquots. Interpreted in the context of the radiation-damage-annealing model (Flowers et al., 2009), these correlations strongly favor the latter scenario: prolonged residence at partial retention temperatures between the Oligocene and at least as late as latest Miocene, at which time rapid cooling of ~50°C, corresponding to ~2 km, occurred. If additional samples yield similar date-eU relationships, then this range was likely exhumed during rapid late Miocene to Recent erosion in the central Colorado Plateau, previously interpreted from AHe dates from regional drill core samples (Stockli et al., 2010) and the postulated result of Colorado River drainage integration, the opening of the Gulf of California, and/or changing climate. Ongoing dating in the range, in addition to thermal modeling, will help identify the extent of the local heating and uplift related to intrusion, and refine AHe date interpretations.

Murray, K. E.; Reiners, P. W.

2010-12-01

494

New equipment and new technique for measuring activity coefficients and Henry's constants at infinite dilution.  

PubMed

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. PMID:21361634

Richon, Dominique

2011-02-01

495

Effect of Henry's law constant and operating parameters on vacuum-assisted headspace solid phase microextraction.  

PubMed

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 param