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Sample records for leonardas kairiuktis jone

  1. Lyle V. Jones: Biography

    ERIC Educational Resources Information Center

    Journal of Educational and Behavioral Statistics, 2003

    2003-01-01

    Lyle V. Jones served as director of the Thurstone Psychometric Laboratory and also became the Vice Chancellor and Dean of the Graduate School of the University of North Carolina (UNC). Jones has been a Research Professor at UNC since 1992. This article presents an interview with Jones wherein he talked about his career as a researcher. Jones also…

  2. Snorkeling and Jones tubes

    PubMed Central

    Lam, Lewis Y. W.; Weatherhead, Robert G.

    2015-01-01

    Summary We report a case of tympanic membrane rupture during snorkeling in a 17-year-old young man who had previously undergone bilateral Jones tubes placed for epiphora. To our knowledge, this phenomenon has not been previously reported.

  3. Bence-Jones protein - quantitative

    MedlinePlus

    Immunoglobulin light chains - urine; Urine Bence-Jones protein ... Bence-Jones proteins are a part of regular antibodies called light chains. These proteins are not normally in urine. Sometimes, when ...

  4. The House That Jones Built.

    ERIC Educational Resources Information Center

    Rist, Marilee C.

    1992-01-01

    Describes lifelong commitment of middle-school principal and major W.J. Jones to Coahoma, a small town in Mississippi Delta. Thanks to his efforts, town recently acquired a sewage system, blacktopped roads, and new housing (through Habitat for Humanity and World Vision). Although town elementary school fell victim to consolidation and children are…

  5. No More Indiana Jones Warehouses

    ERIC Educational Resources Information Center

    Pannapacker, William

    2012-01-01

    In "Raiders of the Lost Ark," Indiana Jones--perhaps the last heroic professor to appear in a major Hollywood film--survives a series of adventures involving spiders, snakes, treacherous colleagues, and countless Nazis who are determined to recover the ark of the covenant for their "Fuhrer." Apparently the ark has mystical powers. Ultimately,…

  6. The Displacement of Mary Jones.

    ERIC Educational Resources Information Center

    McCaslin, Sharon

    1990-01-01

    Describes the experiences of Mary Jones as librarian at the University of Nebraska (1892-97), her resignation attributed to sex discrimination, the impact of her resignation on the library, and her subsequent positions at the University of Illinois, University of Iowa, and Los Angeles Public Library. A sidebar discusses women's career paths in the…

  7. The Jones Family's Culture of Literacy

    ERIC Educational Resources Information Center

    Johnson, Amy Suzanne

    2010-01-01

    This article considers the uses of literacy within the Jones family (all names are pseudonyms), an African American family who lives in the rural South of the United States. Drawing on life history data with three women in the Jones family--Harriet Jones (grandmother), Sally Harris (mother), and Lola Harris (granddaughter)--the author traces how…

  8. The Emergence of Esther Lloyd-Jones

    ERIC Educational Resources Information Center

    Certis, Hannah

    2014-01-01

    Esther Lloyd-Jones made significant contributions to the field of student affairs during her career, and she is known most commonly for her influence on the 1937 "Student Personnel Point of View" (SPPV). Much of her work can be applied to modern student affairs philosophy and practice. This study explores the early life of Lloyd-Jones,…

  9. The Immortality of Ms Jones

    PubMed Central

    Gallagher, Timothy

    2014-01-01

    When I began my medical student clinical rotations, I quickly became overwhelmed by feelings of inadequacy. While the doctors around me conjured appropriate diagnoses and treatment approaches, I fumbled with the only tools I possessed: my time and a smile. It was only when I met the patient Ms Jones that I came to understand the potential impact of these simple tools. My encouragement became part of her recovery process. She gave me the confidence to construct this ability of comforting patients into a small platform of confidence from which I could safely venture to educate patients or suggest treatments to residents. It could be something that I could reliably fall back on in times of doubt and something I could pass along to other people I met. PMID:25024247

  10. The elusive Henry Jones Shrapnell.

    PubMed

    McGovern, F H

    1983-07-01

    In a small series of articles published in The London Gazette in 1830 Henry Jones Shrapnell, surgeon, first described the correct form and structure of the tympanic membrane. He divided the drum membrane into two parts, the pars tensa and the pars flaccida. To this day the latter structure is known to every otologist and to most medical students as Shrapnell's membrane. In addition he wrote on the function of the membrana tympani, the nerves of the ear, and the true anatomy of the os incus. Heretofore the lenticular process of the incus was considered a separate bone in the ossicular chain. In spite of his distinctive contribution to medicine, a search of over a decade failed to uncover little basic information about Shrapnell's life, and for this reason he has been called by a distinguished librarian, the elusive Mr. Shrapnell. Recently, from my continued investigation, and with the help of many fine London scholars, a clearer picture has emerged of Shrapnell's forebearers, his family, his education and his death. PMID:6345977

  11. 77 FR 19718 - Dow Jones & Company, Inc., Dow Jones Content Services Including On-Site Workers From Aerotek, Inc...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-02

    ... Federal Register on February 8, 2012 (77 FR 6590). At the request of the New Jersey State agency, the... Employment and Training Administration Dow Jones & Company, Inc., Dow Jones Content Services Including On... at Dow Jones Corporation, Dow Jones Content Services Princeton, New Jersey. The workers are...

  12. 77 FR 41807 - Dow Jones & Company, Inc., Dow Jones Content Services Division, Including On-Site Workers From...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-16

    ... determination was published in the Federal Register on February 8, 2012 (77 FR 6590). At the request of a... Employment and Training Administration Dow Jones & Company, Inc., Dow Jones Content Services Division... January 26, 2011, applicable to workers of Dow Jones & Company, Inc., Dow Jones Content...

  13. Jones Center Vocational/Academic Program (JCVA).

    ERIC Educational Resources Information Center

    Rydalch, Jeff

    This document provides information on the Jones Center Vocational/Academic Program of the Granite School District (Utah), the purpose of which is to maintain or reintegrate students who are potential high school dropouts or dropouts into appropriate educational alternatives. Its mission statement is followed by a list of program components,…

  14. Test pilots 1952 - Walker, Butchart, and Jones

    NASA Technical Reports Server (NTRS)

    1952-01-01

    This photo shows test pilots, (Left-Right) Joseph A. Walker, Stanley P. Butchart and Walter P. Jones, standing in front of the Douglas D-558-II Skystreak, in 1952. These three test pilots at the National Advisory Committee for Aeronautics' High-Speed Flight Research Station probably were discussing their flights in the aircraft. Joe flew research flights on the D-558-I #3 (14 flights, first on June 29, 1951) investigating buffeting, tail loads, and longitudinal stability. He flew the D-558-II #2 (3 flights, first on April 29, 1955) and recorded data on lateral stability and control. He also made pilot check-out flights in the D-558-II #3 (2 flights, first on May 7, 1954). For fifteen years Walker served as a pilot at the Edwards flight research facility (today known as the National Aeronautics and Space Administration's Dryden Flight Research Center) on research flights as well as chase missions for other pilots on NASA and Air Force research programs. On June 8, 1966, he was flying chase in NASA's F-104N for the Air Force's experimental bomber, North American XB-70A, when he was fatally injured in a mid-air collision between the planes. Stan flew the D-558-I #3 (12 flights, first on October 19, 1951) to determine the dynamic longitudinal stability characteristics and investigations of the lateral stability and control. He made one flight in the D-558-II #3 on June 26, 1953, as a pilot check-out flight. Butchart retired from the NASA Dryden Flight Research Center at Edwards, California, on February 27, 1976, after a 25-year career in research aviation. Stan served as a research pilot, chief pilot, and director of flight operations. Walter P. Jones was a research pilot for NACA from the fall of 1950 to July 1952. He had been in the U.S. Air Force as a pilot before joining the Station. Jones flew the D-558-I #3 (5 flights, first on February 13, 1951) to study buffeting, tail loads and longitudinal stability. Jones made research flights on the D-558-II #3 ( 7 flights

  15. 6. Historic American Buildings Survey Lester Jones, Photographer May 30, ...

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

    6. Historic American Buildings Survey Lester Jones, Photographer May 30, 1940. BRICKWORK DETAIL - NORTHWEST ELEVATION - Colonel William Whitley House, Stanford-Crab Orchard Pike, Stanford, Lincoln County, KY

  16. Historic American Buildings Survey Lester Jones, Photographer February 28, 1940 ...

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

    Historic American Buildings Survey Lester Jones, Photographer February 28, 1940 "African House" SOUTH ELEVATION - Melrose Plantation, African House, State Highway 119, Melrose, Natchitoches Parish, LA

  17. 1. Historic American Buildings Survey Lester Jones, Photographer February 28, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer February 28, 1940 SLAVE HOSPITAL FROM THE SOUTHWEST - Melrose Plantation, Slave Hospital, State Highway 119, Melrose, Natchitoches Parish, LA

  18. 1. Historic American Buildings Survey Russell Jones, Photographer June 1963 ...

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

    1. Historic American Buildings Survey Russell Jones, Photographer June 1963 SOUTHWEST VIEW - Abner Cloud House, Intersection of Canal Road & Reservoir Road Northwest, Washington, District of Columbia, DC

  19. 2. Historic American Buildings Survey Russell Jones, Photographer June 1963 ...

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

    2. Historic American Buildings Survey Russell Jones, Photographer June 1963 SOUTHEAST VIEW - Abner Cloud House, Intersection of Canal Road & Reservoir Road Northwest, Washington, District of Columbia, DC

  20. 2. Historic American Buildings Survey Lester Jones, Photographer March 2, ...

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

    2. Historic American Buildings Survey Lester Jones, Photographer March 2, 1940 GENERAL VIEW FROM SOUTHWEST - Fort Smith, Commissary Building, 100 South Garrison Avenue, Fort Smith, Sebastian County, AR

  1. 3. Historic American Buildings Survey Lester Jones, Photographer. July 31, ...

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

    3. Historic American Buildings Survey Lester Jones, Photographer. July 31, 1940 INTERIOR OF CHESTNUT STREET ENTRANCE - Wainwright Building, Seventh & Chestnut Streets, Saint Louis, Independent City, MO

  2. Freezing of Lennard-Jones-type fluids

    SciTech Connect

    Khrapak, Sergey A.; Chaudhuri, Manis; Morfill, Gregor E.

    2011-02-07

    We put forward an approximate method to locate the fluid-solid (freezing) phase transition in systems of classical particles interacting via a wide range of Lennard-Jones-type potentials. This method is based on the constancy of the properly normalized second derivative of the interaction potential (freezing indicator) along the freezing curve. As demonstrated recently it yields remarkably good agreement with previous numerical simulation studies of the conventional 12-6 Lennard-Jones (LJ) fluid [S.A.Khrapak, M.Chaudhuri, G.E.Morfill, Phys. Rev. B 134, 052101 (2010)]. In this paper, we test this approach using a wide range of the LJ-type potentials, including LJ n-6 and exp-6 models, and find that it remains sufficiently accurate and reliable in reproducing the corresponding freezing curves, down to the triple-point temperatures. One of the possible application of the method--estimation of the freezing conditions in complex (dusty) plasmas with ''tunable'' interactions--is briefly discussed.

  3. Long term rest from grazing: a response to Jones & Carter

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Jones and Carter (this issue) in a response to Davies et al. (2014) misrepresent the original article and other articles, develop arguments not supported by scientific literature, and ignore literature counter to their opinion. Most peculiar, Jones and Carter incorrectly state that Davies et al. co...

  4. Update: Bob Jones University Loses Its Preferred Status.

    ERIC Educational Resources Information Center

    Taylor, Edward F.

    1983-01-01

    The United States Supreme Court upheld an Internal Revenue Service decision to revoke the tax-exempt status and deductibility of donor contributions of Bob Jones University and the Goldsboro, N.C. Christian Schools because of racially discriminatory practices. The decision is discussed and comments by Bob Jones III are presented. (MLW)

  5. 1. View along Jones Street showing (1 to r) S ...

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

    1. View along Jones Street showing (1 to r) S elevation of Paint & Coach Shop, Pattern Room, Lumber Storage, Engine and Boiler House. - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Engine Boiler & Pattern Building, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  6. Robert T. Jones, One of a Kind

    NASA Astrophysics Data System (ADS)

    Vincenti, Walter G.

    2005-01-01

    His contemporaries saw R.T. Jones as one of the notably creative aerodynamicists of the twentieth century. This essay reviews his remarkable life and career, including his years as a farm-country boy, college dropout, and fledgling airplane designer in Missouri, his time as an elevator operator and self-directed student in Washington, D.C., and his long professional career as an aerodynamicist at the Langley and Ames Aeronautical Laboratories and Stanford University. The focus in his career is on his fundamental discovery of the benefits of sweepback for the wings of high-speed airplanes. This includes speculation about his highly intuitive thought processes in arriving at his creative ideas. I also give an account of his work on blood flow and the mechanical heart, his avocational accomplishments as a maker of telescopes and violins, and his philosophical interest in human affairs.

  7. Obituary: Frank Culver Jones, 1932-2007

    NASA Astrophysics Data System (ADS)

    Ormes, Johnathan F.; Streitmatter, Robert E.

    2007-12-01

    Frank C. Jones, an emeritus theoretical physicist at NASA, died May 2, 2007 at age 74 after a struggle with a rare form of cancer. He died at his home in Silver Spring, Maryland, surrounded by his family. Frank was born July 30, 1932 in Fort Worth, Texas, the oldest of three boys. His parents were Kenneth Hugh and Nancy Culver Jones. Frank's father was a lawyer, and his grandfather was a Methodist minister. Frank graduated from Rice University in 1954 and earned a master's degree in 1955 and a doctorate in 1961, both in physics, from the University of Chicago. He did his graduate work with Prof. John Simpson. Dr. Jones began his professional career as an instructor in physics at Princeton University before joining NASA's Goddard Space Flight Center in 1963 as a National Research Council associate. He subsequently became a member of the Theory Division and the Laboratory for High Energy Astrophysics. His area of expertise was the origin, transport, and electromagnetic interactions of cosmic rays. His particular focus was the stochastic physics related to the diffusion of particles in random fields, plasma turbulence, and the shock acceleration of charged particles in collisionless plasmas. From 1993 to 1995, Frank was head of Goddard's Theoretical High Energy Astrophysics Office and continued to serve as Head of the Theory group. In 2003 he served as Acting Chief of the Laboratory for High Energy Astrophysics. He retired in 2005 and continued his affiliation with NASA as an emeritus scientist at Goddard until his death. As a youngster, Frank showed the signs of curiosity and initiative that indicated he might become an experimentalist. At the memorial service for Frank, his brother related the stories of how Frank had rigged a hidden microphone to play through the family television as his brother courted a young woman on the front porch swing, and how one of Frank's early chemistry experiments caused all the family silverware to turn black. Although Frank started

  8. Obituary: Frank Culver Jones, 1932-2007

    NASA Astrophysics Data System (ADS)

    Ormes, Johnathan F.; Streitmatter, Robert E.

    2007-12-01

    Frank C. Jones, an emeritus theoretical physicist at NASA, died May 2, 2007 at age 74 after a struggle with a rare form of cancer. He died at his home in Silver Spring, Maryland, surrounded by his family. Frank was born July 30, 1932 in Fort Worth, Texas, the oldest of three boys. His parents were Kenneth Hugh and Nancy Culver Jones. Frank's father was a lawyer, and his grandfather was a Methodist minister. Frank graduated from Rice University in 1954 and earned a master's degree in 1955 and a doctorate in 1961, both in physics, from the University of Chicago. He did his graduate work with Prof. John Simpson. Dr. Jones began his professional career as an instructor in physics at Princeton University before joining NASA's Goddard Space Flight Center in 1963 as a National Research Council associate. He subsequently became a member of the Theory Division and the Laboratory for High Energy Astrophysics. His area of expertise was the origin, transport, and electromagnetic interactions of cosmic rays. His particular focus was the stochastic physics related to the diffusion of particles in random fields, plasma turbulence, and the shock acceleration of charged particles in collisionless plasmas. From 1993 to 1995, Frank was head of Goddard's Theoretical High Energy Astrophysics Office and continued to serve as Head of the Theory group. In 2003 he served as Acting Chief of the Laboratory for High Energy Astrophysics. He retired in 2005 and continued his affiliation with NASA as an emeritus scientist at Goddard until his death. As a youngster, Frank showed the signs of curiosity and initiative that indicated he might become an experimentalist. At the memorial service for Frank, his brother related the stories of how Frank had rigged a hidden microphone to play through the family television as his brother courted a young woman on the front porch swing, and how one of Frank's early chemistry experiments caused all the family silverware to turn black. Although Frank started

  9. 75 FR 20802 - Safety Zone; New York Air Show at Jones Beach State Park, Atlantic Ocean off of Jones Beach...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-21

    ... Federal Register (73 FR 3316). Public Meeting We do not plan on holding a public meeting. But you may... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; New York Air Show at Jones Beach State Park, Atlantic Ocean off of Jones Beach, Wantagh, NY AGENCY: Coast Guard, DHS. ACTION: Notice of...

  10. Transport theory for the Lennard-Jones dense fluid

    SciTech Connect

    Karkheck, J.; Stell, G.; Xu, J.

    1988-11-01

    A kinetic theory for a fluid of particles interacting via a pair potential with hard-core plus truncated tail is described and used to derive a transport theory for the Lennard-Jones fluid as well as the square-well fluid. Numerical results for shear viscosity, thermal conductivity, and the self-diffusion coefficient are given for the Lennard-Jones fluid and compared with simulation and experimental results. Our Lennard-Jones theory proves quantitatively useful over a wide range of states.

  11. 15. Historic American Buildings Survey Russell Jones, Photographer June 1963 ...

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

    15. Historic American Buildings Survey Russell Jones, Photographer June 1963 WINDOW DETAIL Rear Main House, First Floor - Timothy Caldwell House, 2017 "Eye" Street Northwest, Washington, District of Columbia, DC

  12. 14. Historic American Buildings Survey Russell Jones, Photographer June 1963 ...

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

    14. Historic American Buildings Survey Russell Jones, Photographer June 1963 DOOR DETAIL From Dining Room to Garden - Timothy Caldwell House, 2017 "Eye" Street Northwest, Washington, District of Columbia, DC

  13. 1. Historic American Buildings Survey Russell Jones, Photographer March 1959 ...

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

    1. Historic American Buildings Survey Russell Jones, Photographer March 1959 FRONT (SOUTH) ELEVATION FROM THE SOUTH EAST. - Justice Horace Gray House, 1601 Eye Street Northwest, Washington, District of Columbia, DC

  14. 1. Historic American Buildings Survey Lester Jones, Photographer June 1, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer June 1, 1940 DETAIL OF DOORWAY (Removed from 665 Price Ave., Lexington, Ky.) - 535 West Short Street (Old Doorway), (moved from 655 Price Avenue), Lexington, Fayette County, KY

  15. 2. Historic American Buildings Survey Lester Jones, Photographer June 1, ...

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

    2. Historic American Buildings Survey Lester Jones, Photographer June 1, 1940 VIEW FROM NORTH - Morrison College, Transylvania University, West Third Street, between Upper Street & Broadway, Lexington, Fayette County, KY

  16. 1. Historic American Buildings Survey Lester Jones, Photographer June 1, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer June 1, 1940 VIEW FROM SOUTHWEST - Morrison College, Transylvania University, West Third Street, between Upper Street & Broadway, Lexington, Fayette County, KY

  17. 6. Historic American Buildings Survey Russell Jones, Photographer February 1959 ...

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

    6. Historic American Buildings Survey Russell Jones, Photographer February 1959 COLUMN DETAIL, ENTRY PORCH, 2620 K STREET, N.W. - Peter Houses, 2618-2620 K Street Northwest, Washington, District of Columbia, DC

  18. 1. Historic American Buildings Survey Russell Jones, Photographer March 1959 ...

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

    1. Historic American Buildings Survey Russell Jones, Photographer March 1959 DETAIL - LIGHT STANDARD, EAST GROUNDS - U.S. Capitol, Light Standards, Capitol Grounds, East of Capitol, Washington, District of Columbia, DC

  19. 2. Historic American Buildings Survey Russell Jones, Photographer March 1959 ...

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

    2. Historic American Buildings Survey Russell Jones, Photographer March 1959 DETAIL - LIGHT STANDARD, EAST GROUNDS - U.S. Capitol, Light Standards, Capitol Grounds, East of Capitol, Washington, District of Columbia, DC

  20. 5. Historic American Buildings Survey Lester Jones, Photographer August 24, ...

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

    5. Historic American Buildings Survey Lester Jones, Photographer August 24, 1940 HARDWARE - Shaker Centre Family Dwelling House (Third), North side of Village Road, North of Route 68 & State Route 33, Shakertown, Mercer County, KY

  1. 7. Historic American Buildings Survey Lester Jones, Photographer May 29, ...

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

    7. Historic American Buildings Survey Lester Jones, Photographer May 29, 1940. SUNDIAL With motto: 'Look to your laws rather than progenitors for inheritance.' - Samuel Taylor House, Chatham Pike, Harrodsburg, Mercer County, KY

  2. 6. Watchman Robert 'Jerry' Jones at Camp Dyer. Photographer James ...

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

    6. Watchman Robert 'Jerry' Jones at Camp Dyer. Photographer James Dix Schuyler, 1903. Source: Schuyler report. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  3. 6. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    6. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 SERVANT'S STAIRWAY - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  4. 8. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    8. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 STAIRWAY, LOOKING UP - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  5. 9. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    9. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 FLOOR DETAIL, HALL - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  6. 10. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    10. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 ROSETTE, IN HALL - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  7. 1. Historic American Buildings Survey Lester Jones, Photographer July 5, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer July 5, 1940 VIEW FROM NORTHWEST - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  8. 7. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    7. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 STAIRWAY, FIRST FLOOR - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  9. 2. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    2. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 VIEW FROM SOUTH - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  10. 5. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    5. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 WINDOW DETAIL - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  11. 4. Historic American Buildings Survey Lester Jones, Photographer July 5, ...

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

    4. Historic American Buildings Survey Lester Jones, Photographer July 5, 1940 PORCH DETAIL - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  12. 11. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    11. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 NORTHWEST ROOM, SECOND FLOOR, LOOKING NORTH - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  13. 3. Historic American Buildings Survey Lester Jones, Photographer July 7, ...

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

    3. Historic American Buildings Survey Lester Jones, Photographer July 7, 1940 VIEW FROM NORTHEAST - Colonel William Oliver Anderson House, Civil War Battle of Lexington State Park, Lexington, Lafayette County, MO

  14. ISS Update: Status of Space Act Agreement with Brad Jones

    NASA Video Gallery

    NASA Public Affairs Officer Kyle Herring interviews Brad Jones, Deputy Manager, Partner Integration Office – Commercial Crew Program, about the Space Act Agreement. Questions? Ask us on Twitter ...

  15. 1. Historic American Buildings Survey, Copied by Stanley Jones, Photographer ...

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

    1. Historic American Buildings Survey, Copied by Stanley Jones, Photographer February 3, 1937 COPY OF PHOTOGRAPH SHOWING NORTH WEST ELEVATION. - Father Snowden House, 991 Wyoming Avenue, Forty Fort, Luzerne County, PA

  16. 11. Historic American Buildings Survey, Stanley Jones, Photographer July 6, ...

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

    11. Historic American Buildings Survey, Stanley Jones, Photographer July 6, 1936, copied from portrait, PORTRAIT OF WILLIAM HENRY, INVENTOR OF HENRY GUN. - Henry Gun Factory, Belfast, Northampton County, PA

  17. 12. Historic American Buildings Survey, Stanley Jones, Photographer July 6, ...

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

    12. Historic American Buildings Survey, Stanley Jones, Photographer July 6, 1936, copied from portrait, PORTRAIT OF WILLIAM HENRY 3RD, OWNER OF HENRY GUN FACTORY. - Henry Gun Factory, Belfast, Northampton County, PA

  18. 1. Historic American Buildings Survey Lester Jones, Photographer. October 1, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer. October 1, 1940. VIEW FROM NORTHEAST - Fort de Chartres, Commandant's Quarters (Foundations), Fort de Chartres State Park, Prairie du Rocher, Randolph County, IL

  19. 1. Historic American Buildings Survey, Lester Jones, Photographer. October 1, ...

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

    1. Historic American Buildings Survey, Lester Jones, Photographer. October 1, 1940. VIEW FROM NORTHWEST - Fort de Chartres, Officers' Quarters (Foundations), Fort de Chartres State Park, Prairie du Rocher, Randolph County, IL

  20. 1. Historic American Buildings Survey Lester Jones, Photographer October 1, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer October 1, 1940. VIEW FROM SOUTHEAST - Fort de Chartres, East Barracks (Foundations), Fort de Chartres State Park, Prairie du Rocher, Randolph County, IL

  1. 1. Historic American Buildings Survey Lester Jones, Photographer. October 1, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer. October 1, 1940. VIEW FROM NORTHEAST - Fort de Chartres, Powder Magazine, Fort de Chartres State Park, Prairie du Rocher, Randolph County, IL

  2. 2. Historic American Buildings Survey Lester Jones, Photographer. October 1, ...

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

    2. Historic American Buildings Survey Lester Jones, Photographer. October 1, 1940. VIEW FROM SOUTHWEST - Fort de Chartres, Powder Magazine, Fort de Chartres State Park, Prairie du Rocher, Randolph County, IL

  3. 1. Historic American Buildings Survey Lester Jones, Photographer October 1, ...

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

    1. Historic American Buildings Survey Lester Jones, Photographer October 1, 1940. VIEW FROM NORTHWEST - Fort de Chartres, West Barracks (Foundations), Fort de Chartres State Park, Prairie du Rocher, Randolph County, IL

  4. HOT METAL BRIDGE (NOTE: BUILDERS: JONES AND LAUGHLIN STEEL CA. ...

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

    HOT METAL BRIDGE (NOTE: BUILDERS: JONES AND LAUGHLIN STEEL CA. 1890), SOUTH PORTAL. THREE PIN CONNECTED CAMELBACK TRUSS SPANS, ONE SKEWED THROUGH TRUSS SPAN ON NORTH SIDE TRUSS BRIDGE, EAST OF HOT METAL BRIDGE BUILT BY AMERICAN BRIDGE COMPANY CA. 1910. (RIVETED MULTI-SPAN TRUSS). - Jones & Laughlin Steel Corporation, Pittsburgh Works, Morgan Billet Mill Engine, 550 feet north of East Carson Street, opposite South Twenty-seventh Street, Pittsburgh, Allegheny County, PA

  5. NEWS: John Goronwy Jones (1920-1999)

    NASA Astrophysics Data System (ADS)

    Jennison, Brenda M.

    2000-05-01

    John Goronwy Jones Gron Jones, as he was known to all, was a champion of Physics Education and his death, shortly before his eightieth birthday, robbed physics teachers of a colleague who fought many battles on their behalf. He was not shy of taking issue with anyone in authority who might be putting forward policies which would harm his great love: Physics Education and Physics Teaching. His photograph shows a man with an impish grin, looking friend and foe alike straight in the eye, before delivering the death blow to an argument which was founded on less than common sense. At other times he would listen patiently to the woes of colleagues before offering them fatherly/grandfatherly advice so that whoever was on the receiving end would go away feeling better for the encounter. Gron was born in Swansea and educated at Lewis Boys Grammar School in Glamorgan before entering University College Cardiff first of all as a mathematician before graduating in Physics in 1941. After his war service in the RAF, working on signals and radar development, he returned to do an MSc in X-ray crystallography before completing a PGCE in Bristol. What then passed for teacher training in all institutions left him wary of returning to train teachers himself but after 14 years spent teaching physics in three schools he returned to Cardiff and began a 25 year career in teacher training. He and his two colleagues, Clifford Othen (chemistry) and Douglas Hillier (biology) built up the Cardiff Science Centre as a focus for initial and in-service science teacher training in South Wales. The triumvirate was well known and a power to be reckoned with. They created links between the University Science Departments and the Schools. Gron knew the local schools and their physics teachers intimately. Cardiff became a focus for science education both nationally and internationally. He was a frequent attender at both ICPE (International Commission for Physics Education) and GIREP (International Physics

  6. NEWS: John Goronwy Jones (1920-1999)

    NASA Astrophysics Data System (ADS)

    Jennison, Brenda M.

    2000-05-01

    John Goronwy Jones Gron Jones, as he was known to all, was a champion of Physics Education and his death, shortly before his eightieth birthday, robbed physics teachers of a colleague who fought many battles on their behalf. He was not shy of taking issue with anyone in authority who might be putting forward policies which would harm his great love: Physics Education and Physics Teaching. His photograph shows a man with an impish grin, looking friend and foe alike straight in the eye, before delivering the death blow to an argument which was founded on less than common sense. At other times he would listen patiently to the woes of colleagues before offering them fatherly/grandfatherly advice so that whoever was on the receiving end would go away feeling better for the encounter. Gron was born in Swansea and educated at Lewis Boys Grammar School in Glamorgan before entering University College Cardiff first of all as a mathematician before graduating in Physics in 1941. After his war service in the RAF, working on signals and radar development, he returned to do an MSc in X-ray crystallography before completing a PGCE in Bristol. What then passed for teacher training in all institutions left him wary of returning to train teachers himself but after 14 years spent teaching physics in three schools he returned to Cardiff and began a 25 year career in teacher training. He and his two colleagues, Clifford Othen (chemistry) and Douglas Hillier (biology) built up the Cardiff Science Centre as a focus for initial and in-service science teacher training in South Wales. The triumvirate was well known and a power to be reckoned with. They created links between the University Science Departments and the Schools. Gron knew the local schools and their physics teachers intimately. Cardiff became a focus for science education both nationally and internationally. He was a frequent attender at both ICPE (International Commission for Physics Education) and GIREP (International Physics

  7. Nuclear-magnetic-resonance quantum calculations of the Jones polynomial

    SciTech Connect

    Marx, Raimund; Spoerl, Andreas; Pomplun, Nikolas; Schulte-Herbrueggen, Thomas; Glaser, Steffen J.; Fahmy, Amr; Kauffman, Louis; Lomonaco, Samuel; Myers, John M.

    2010-03-15

    The repertoire of problems theoretically solvable by a quantum computer recently expanded to include the approximate evaluation of knot invariants, specifically the Jones polynomial. The experimental implementation of this evaluation, however, involves many known experimental challenges. Here we present experimental results for a small-scale approximate evaluation of the Jones polynomial by nuclear magnetic resonance (NMR); in addition, we show how to escape from the limitations of NMR approaches that employ pseudopure states. Specifically, we use two spin-1/2 nuclei of natural abundance chloroform and apply a sequence of unitary transforms representing the trefoil knot, the figure-eight knot, and the Borromean rings. After measuring the nuclear spin state of the molecule in each case, we are able to estimate the value of the Jones polynomial for each of the knots.

  8. Lucile Jones to Deliver Public Lecture at 2013 Fall Meeting

    NASA Astrophysics Data System (ADS)

    Adamec, Bethany Holm

    2013-07-01

    Lucile Jones, science advisor for risk reduction with the U.S. Geological Survey, will deliver the annual public lecture at the 2013 AGU Fall Meeting. A familiar face to many in California, Jones is frequently interviewed on television after major earthquakes in the southern part of the state. Her work, which has resulted in more than 90 publications on research seismology, focuses on foreshocks and earthquake physics. Her current Multi-Hazards Demonstration Project aims to demonstrate to the public how science can improve society's resiliency to earthquakes.

  9. 3. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    3. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (NORTH) ELEVATION - Southeast Area Survey, 600-602 & 1100 G Street (House), 1002,1006 Eye Street (House), 808-810,812-814, & 1016 K Street (House), 817-819 L Street (House), Washington, District of Columbia, DC

  10. 13. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    13. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (EAST) ELEVATION. 1105 (LEFT) 1103 (RIGHT) - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  11. 22. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    22. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (EAST) ELEVATION FROM THE S. E. - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  12. 9. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    9. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (SOUTH) ELEVATION FROM THE SOUTH EAST 706 (LEFT) 708 (RIGHT) - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  13. 1. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    1. Historic American Buildings Survey Russell Jones, Photographer April 1959 EAST END OF GROUP FROM THE NORTH - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  14. 1. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    1. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT ELEVATION, 156 (LEFT) 158 (RIGHT) - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  15. 7. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    7. Historic American Buildings Survey Russell Jones, Photographer April 1959 EAST ELEVATION FROM THE N. E. - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  16. 6. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    6. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (WEST) ELEVATION (316 AT THE LEFT) - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  17. 2. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    2. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT ELEVATION. 306 (LEFT), 308 (RIGHT) - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  18. 7. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    7. Historic American Buildings Survey Russell Jones, Photographer April 1959 ENTRANCE, 316 - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  19. 8. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    8. Historic American Buildings Survey Russell Jones, Photographer April 1959 DETAIL - 124 - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  20. 10. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    10. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (NORTH) ELEVATION. 819 (LEFT) 817 (RIGHT) - Southeast Area Survey, 600-602 & 1100 G Street (House), 1002,1006 Eye Street (House), 808-810,812-814, & 1016 K Street (House), 817-819 L Street (House), Washington, District of Columbia, DC

  1. 2. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    2. Historic American Buildings Survey Russell Jones, Photographer April 1959 EAST CENTER SECTION OF GROUP FROM THE NORTH - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  2. 8. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    8. Historic American Buildings Survey Russell Jones, Photographer April 1959 ENTRANCE, 318 - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  3. 4. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    4. Historic American Buildings Survey Russell Jones, Photographer April 1959 DETAIL - ONE UNIT OF GROUP - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  4. 6. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    6. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (SOUTH) ELEVATION 808 (LEFT) 810 (RIGHT) - Southeast Area Survey, 600-602 & 1100 G Street (House), 1002,1006 Eye Street (House), 808-810,812-814, & 1016 K Street (House), 817-819 L Street (House), Washington, District of Columbia, DC

  5. 8. Historic American Buildings Survey Russell Jones, Photographer March 1959 ...

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

    8. Historic American Buildings Survey Russell Jones, Photographer March 1959 DETAIL - 2nd AND 3rd FLOOR WINDOWS, SOUTH ELEVATION - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  6. 18. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    18. Historic American Buildings Survey Russell Jones, Photographer April 1959 ENTRANCE, 132 (LEFT) 134 (RIGHT) - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  7. 10. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    10. Historic American Buildings Survey Russell Jones, Photographer April 1959 GENERAL VIEW FROM THE SOUTH - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  8. 4. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    4. Historic American Buildings Survey Russell Jones, Photographer April 1959 ENTRY, #324 - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  9. 10. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    10. Historic American Buildings Survey Russell Jones, Photographer April 1959 REAR(EAST) & LEFT ELEVATIONS FROM THE N. E. - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  10. 14. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    14. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (WEST) ELEVATION - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  11. 7. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    7. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT ELEVATION - 122 (LEFT) 124 (RIGHT) - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  12. 5. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    5. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (EAST) ELEVATION - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  13. 16. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    16. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (WEST) ELEVATION (132 ON THE LEFT) - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  14. 6. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    6. Historic American Buildings Survey Russell Jones, Photographer April 1959 ENTRY - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  15. 4. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    4. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (SOUTH) ELEVATION - Southeast Area Survey, 600-602 & 1100 G Street (House), 1002,1006 Eye Street (House), 808-810,812-814, & 1016 K Street (House), 817-819 L Street (House), Washington, District of Columbia, DC

  16. 15. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    15. Historic American Buildings Survey Russell Jones, Photographer April 1959 REAR (EAST) AND LEFT (NORTH) ELEVATIONS - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  17. 1. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    1. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (WEST) ELEVATION - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  18. 2. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    2. Historic American Buildings Survey Russell Jones, Photographer April 1959 REAR (NORTH) ELEVATION FROM THE N. W. - Southeast Area Survey, 600-602 & 1100 G Street (House), 1002,1006 Eye Street (House), 808-810,812-814, & 1016 K Street (House), 817-819 L Street (House), Washington, District of Columbia, DC

  19. 9. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    9. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (WEST) ELEVATION FROM THE N.W. - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  20. 12. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    12. Historic American Buildings Survey Russell Jones, Photographer April 1959 ENTRANCE DETAIL - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  1. 17. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    17. Historic American Buildings Survey Russell Jones, Photographer April 1959 UNIT AT 132 - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  2. 1. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    1. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (SOUTH) ELEVATION. 600 (LEFT) 602 (RIGHT) - Southeast Area Survey, 600-602 & 1100 G Street (House), 1002,1006 Eye Street (House), 808-810,812-814, & 1016 K Street (House), 817-819 L Street (House), Washington, District of Columbia, DC

  3. 11. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    11. Historic American Buildings Survey Russell Jones, Photographer April 1959 GENERAL VIEW FROM THE EAST. 1016 and 1018. - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  4. 2. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    2. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (EAST) ELEVATION - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  5. 5. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    5. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (SOUTH) ELEVATION - Southeast Area Survey, 600-602 & 1100 G Street (House), 1002,1006 Eye Street (House), 808-810,812-814, & 1016 K Street (House), 817-819 L Street (House), Washington, District of Columbia, DC

  6. 6. Historic American Buildings Survey Russell Jones, Photographer March 1959 ...

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

    6. Historic American Buildings Survey Russell Jones, Photographer March 1959 SOUTH ELEVATION FROM THE SOUTH EAST - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  7. 20. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    20. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (WEST) ELEVATION FROM THE N. W. - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  8. 3. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    3. Historic American Buildings Survey Russell Jones, Photographer April 1959 WEST CENTER SECTION OF GROUP FROM THE NORTH - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  9. 11. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    11. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (7th STREET) ELEVATION FRON THE SOUTH EAST - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  10. 5. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    5. Historic American Buildings Survey Russell Jones, Photographer April 1959 WEST END OF GROUP FROM THE NORTH - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  11. 4. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    4. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (WEST) ELEVATION - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  12. 3. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    3. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (EAST) ELEVATION - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  13. 19. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    19. Historic American Buildings Survey Russell Jones, Photographer April 1959 WINDOW DETAIL - 132 - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  14. 5. Historic American Buildings Survey Russell Jones, Photographer March 1959 ...

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

    5. Historic American Buildings Survey Russell Jones, Photographer March 1959 DETAIL - PLAQUE - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  15. 21. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    21. Historic American Buildings Survey Russell Jones, Photographer April 1959 REAR (EAST) ELEVATION FROM THE N. E. - Southeast Area Survey, Sixth & G Streets (Synagogue), 132-144 & 900-905 Eleventh Street (Row Houses), 215 Second Street (House), Seventh & G Streets (School), 214 First Street (House), Washington, District of Columbia, DC

  16. 9. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    9. Historic American Buildings Survey Russell Jones, Photographer April 1959 GENERAL VIEW FROM THE EAST - Southeast Area Survey, 101 & 122-124 Carroll Street (House), 1008 Potomac Street (House), Canal Street at Independence Avenue (Row House), 1016-1018 Potomac Street (House), Washington, District of Columbia, DC

  17. 3. Historic American Buildings Survey Russell Jones, Photographer April 1959 ...

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

    3. Historic American Buildings Survey Russell Jones, Photographer April 1959 FRONT (SOUTH) ELEVATION. 324 (LEFT) 326 (RIGHT) - Southeast Area Survey, 330 & 706-708 Virginia Avenue (Houses), 306-308,324-326 Virginia Avenue (Houses), 156-158 North Carolina Avenue (Houses), Washington, District of Columbia, DC

  18. AERIAL VIEW, LOOKING NORTHWEST TOWARDS JONES VALLEY FROM THE CREST ...

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

    AERIAL VIEW, LOOKING NORTHWEST TOWARDS JONES VALLEY FROM THE CREST OF RED (CALLED RUFFNER) MOUNTAIN AND THE CITY OF BIRMINGHAM (TOP), WITH ABANDONED SLOSS CO. LIMESTONE QUARRIES (CENTER) AND RIGHT-OF-WAY OF THE L. & N. BIRMINGHAM MINERAL RAILROAD (LEFT CENTER TO BOTTOM RIGHT). - Ruffner Red Ore Mine, North of I-20 at Madrid Exit, Birmingham, Jefferson County, AL

  19. Edward Burne-Jones' Heavenly Conception: A Biblical Cosmos

    NASA Astrophysics Data System (ADS)

    Cheney, L. D. G.

    2016-01-01

    Edward Burne-Jones was a Pre-Raphaelite artist and designer, who collaborated with William Morris on many decorative arts (stained glass windows, book illustrations, ceramic and tapestry designs). He was a founding partner in the firm Morris, Marshall, Faulkner & Company. Burne-Jones composed The Days of Creation between 1870 and 1876 for the Morris firm. These paintings were executed in gouache and gold paint, and cartoons were made for tile and in stained glass, for the Church of St. Editha at Tamworth in Staffordshire. Burne-Jones' creation was highly praised and elegantly described by Oscar Wilde: “The picture is divided into six compartments, each representing a day in the Creation of the World, under the symbol of an angel holding a crystal globe, within which is shown the work of a day.” This paper will examine how Burne-Jones visualized an unusual celestial creation where angels holding magical spheres unveil the divine manifestation for the creation of a terrestrial realm. He created a cosmic utopia of the natural world.

  20. Birefringence of Cellotape: Jones Representation and Experimental Analysis

    ERIC Educational Resources Information Center

    Belendez, Augusto; Fernandez, Elena; Frances, Jorge; Neipp, Cristian

    2010-01-01

    In this paper, we analyse a simple experiment to study the effects of polarized light. A simple optical system composed of a polarizer, a retarder (cellotape) and an analyser is used to study the effect on the polarization state of the light which impinges on the setup. The optical system is characterized by means of a Jones matrix, and a simple…

  1. Contextual view of Fyffe Avenue between Jones and Boone Drives. ...

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

    Contextual view of Fyffe Avenue between Jones and Boone Drives. ASA office (U.S. Border Control Environmental Office Building no. 317) is shown at center. Camera facing east. - Naval Supply Annex Stockton, Rough & Ready Island, Stockton, San Joaquin County, CA

  2. DREDGED MATERIAL RECLAMATION AT THE JONES ISLAND CONFINED DISPOSAL FACILITY - ITER

    EPA Science Inventory

    In this SITE demonstration, phytoremediation technology was applied to contaminated dredged materials from the Jones Island Confined Disposal Facility (CDF) located in Milwaukee Harbor, Wisconsin. The Jones Island CDF receives dredged materials from normal maintenance of Milwauke...

  3. DREDGED MATERIAL RECLAMATION AT THE JONES ISLAND CONFINED DISPOSAL FACILITY SITE CAPSULE

    EPA Science Inventory

    In this SITE demonstration, phytoremediation technology was applied to contaminated dredged materials from the Jones Island Confined Disposal Facility (CDF) located in Milwaukee Harbor, Wisconsin. The Jones Island CDF receives dredged materials from normal maintenance of Milwauke...

  4. 21 CFR 866.5150 - Bence-Jones proteins immunological test system.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... the Bence-Jones proteins in urine and plasma. Immunoglobulin molecules normally consist of pairs of... disulfide bridges. In some cancerous conditions, there is a proliferation of one plasma cell (antibody... plasma, and have been called Bence-Jones proteins. Measurement of Bence-Jones proteins and...

  5. 21 CFR 866.5150 - Bence-Jones proteins immunological test system.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... the Bence-Jones proteins in urine and plasma. Immunoglobulin molecules normally consist of pairs of... disulfide bridges. In some cancerous conditions, there is a proliferation of one plasma cell (antibody... plasma, and have been called Bence-Jones proteins. Measurement of Bence-Jones proteins and...

  6. 21 CFR 866.5150 - Bence-Jones proteins immunological test system.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... the Bence-Jones proteins in urine and plasma. Immunoglobulin molecules normally consist of pairs of... disulfide bridges. In some cancerous conditions, there is a proliferation of one plasma cell (antibody... plasma, and have been called Bence-Jones proteins. Measurement of Bence-Jones proteins and...

  7. 21 CFR 866.5150 - Bence-Jones proteins immunological test system.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... the Bence-Jones proteins in urine and plasma. Immunoglobulin molecules normally consist of pairs of... disulfide bridges. In some cancerous conditions, there is a proliferation of one plasma cell (antibody... plasma, and have been called Bence-Jones proteins. Measurement of Bence-Jones proteins and...

  8. 21 CFR 866.5150 - Bence-Jones proteins immunological test system.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... the Bence-Jones proteins in urine and plasma. Immunoglobulin molecules normally consist of pairs of... disulfide bridges. In some cancerous conditions, there is a proliferation of one plasma cell (antibody... plasma, and have been called Bence-Jones proteins. Measurement of Bence-Jones proteins and...

  9. Experimental approximation of the Jones polynomial with one quantum bit.

    PubMed

    Passante, G; Moussa, O; Ryan, C A; Laflamme, R

    2009-12-18

    We present experimental results approximating the Jones polynomial using 4 qubits in a liquid state nuclear magnetic resonance quantum information processor. This is the first experimental implementation of a complete problem for the deterministic quantum computation with one quantum bit model of quantum computation, which uses a single qubit accompanied by a register of completely random states. The Jones polynomial is a knot invariant that is important not only to knot theory, but also to statistical mechanics and quantum field theory. The implemented algorithm is a modification of the algorithm developed by Shor and Jordan suitable for implementation in NMR. These experimental results show that for the restricted case of knots whose braid representations have four strands and exactly three crossings, identifying distinct knots is possible 91% of the time. PMID:20366244

  10. Second virial coefficient of a generalized Lennard-Jones potential.

    PubMed

    González-Calderón, Alfredo; Rocha-Ichante, Adrián

    2015-01-21

    We present an exact analytical solution for the second virial coefficient of a generalized Lennard-Jones type of pair potential model. The potential can be reduced to the Lennard-Jones, hard-sphere, and sticky hard-sphere models by tuning the potential parameters corresponding to the width and depth of the well. Thus, the second virial solution can also regain the aforementioned cases. Moreover, the obtained expression strongly resembles the one corresponding to the Kihara potential. In fact, the Fk functions are the same. Furthermore, for these functions, the complete expansions at low and high temperature are given. Additionally, we propose an alternative stickiness parameter based on the obtained second virial coefficient. PMID:25612707

  11. C. Rick Jones Is IRPA Keynote Lecturer on Stakeholder Engagement

    SciTech Connect

    Strom, Daniel J.

    2008-12-03

    At the recent IRPA 12 Conference in Buenos Aires, Argentina, C. Rick Jones gave the keynote lecture “Stakeholder Engagement in Practice - Now Is the Time to Act!” This was one of the very best talks at the conference, covering IRPA’s draft “Guiding Principles for Radiation Protection Professionals on Stakeholder Engagement” (http://www.irpa.net/images/stories/irpa12/ irpa12%2008-02-1_guiding%20principles(rev).doc).

  12. Elastic Lennard-Jones polymers meet clusters: Differences and similarities

    NASA Astrophysics Data System (ADS)

    Schnabel, Stefan; Bachmann, Michael; Janke, Wolfhard

    2009-09-01

    We investigate solid-solid and solid-liquid transitions of elastic flexible off-lattice polymers with Lennard-Jones monomer-monomer interaction and anharmonic springs by means of sophisticated variants of multicanonical Monte Carlo methods. We find that the low-temperature behavior depends strongly and nonmonotonically on the system size and exhibits broad similarities to unbound atomic clusters. Particular emphasis is dedicated to the classification of icosahedral and nonicosahedral low-energy polymer morphologies.

  13. A Viola-Jones based hybrid face detection framework

    NASA Astrophysics Data System (ADS)

    Murphy, Thomas M.; Broussard, Randy; Schultz, Robert; Rakvic, Ryan; Ngo, Hau

    2013-12-01

    Improvements in face detection performance would benefit many applications. The OpenCV library implements a standard solution, the Viola-Jones detector, with a statistically boosted rejection cascade of binary classifiers. Empirical evidence has shown that Viola-Jones underdetects in some instances. This research shows that a truncated cascade augmented by a neural network could recover these undetected faces. A hybrid framework is constructed, with a truncated Viola-Jones cascade followed by an artificial neural network, used to refine the face decision. Optimally, a truncation stage that captured all faces and allowed the neural network to remove the false alarms is selected. A feedforward backpropagation network with one hidden layer is trained to discriminate faces based upon the thresholding (detection) values of intermediate stages of the full rejection cascade. A clustering algorithm is used as a precursor to the neural network, to group significant overlappings. Evaluated on the CMU/VASC Image Database, comparison with an unmodified OpenCV approach shows: (1) a 37% increase in detection rates if constrained by the requirement of no increase in false alarms, (2) a 48% increase in detection rates if some additional false alarms are tolerated, and (3) an 82% reduction in false alarms with no reduction in detection rates. These results demonstrate improved face detection and could address the need for such improvement in various applications.

  14. Quantum algorithms for virtual Jones polynomials via Thistlethwaite theorems

    NASA Astrophysics Data System (ADS)

    Vélez, Mario; Ospina, Juan

    2010-04-01

    Recently a quantum algorithm for the Jones polynomial of virtual links was proposed by Kauffman and Dye via the implementation of the virtual braid group in anyonic topological quantum computation when the virtual crossings are considered as generalized swap gates. Also recently, a mathematical method for the computation of the Jones polynomial of a given virtual link in terms of the relative Tuttle polynomial of its face (Tait) graph with some suitable variable substitutions was proposed by Diao and Hetyei. The method of Diao and Hetyei is offered as an alternative to the ribbon graph approach according to which the Tutte polynomial of a given virtual link is computed in terms of the Bollobás- Riordan polynomial of the corresponding ribbon graph. The method of Diao and Hetyei can be considered as an extension of the celebrated Thistlethwaite theorem according to which invariant polynomials for knots and links are derived from invariant polynomials for graphs. Starting from these ideas we propose a quantum algorithm for the Jones polynomial of a given virtual link in terms of the generalized Tutte polynomials by exploiting the Thistlethwaite theorem and the Kauffman algorithm . Our method is claimed as the quantum version of the Diao-Hetyei method. Possible supersymmetric implementations of our algortihm are discussed jointly with its formulations using topological quantum lambda calculus.

  15. Four crystal forms of a Bence-Jones protein

    SciTech Connect

    Makino, Debora L.; Henschen-Edman, Agnes H.; McPherson, Alexander

    2005-01-01

    Four crystal forms have been grown and characterized by X-ray diffraction of a Bence-Jones protein collected from the urine of a multiple myeloma patient more than 40 y ago. The trigonal crystal form may shed some light on the formation of fibrils common to certain storage diseases. Four crystal forms have been grown and characterized by X-ray diffraction of a Bence-Jones protein collected from the urine of a multiple myeloma patient more than 40 years ago. Closely related tetragonal and orthorhombic forms belonging to space groups P4{sub 3}2{sub 1}2 and P2{sub 1}2{sub 1}2{sub 1}, with unit-cell parameters a = b = 68.7, c = 182.1 and a = 67.7, b = 69.4, c = 87.3 Å, diffract to 1.5 and 1.9 Å, respectively. Two closely related trigonal forms, both belonging to space group P3{sub 1}21 with unit-cell parameters a = b = 154.3 Å but differing by a doubling of the c axis, one 46.9 Å and the other 94.0 Å, diffract to 2.9 and 2.6 Å resolution, respectively. The trigonal crystal of short c-axis length shows a positive indication of twinning. The trigonal crystal of longer c axis, which appeared only after eight months of incubation at room temperature, is likely to be composed of proteolytically degraded molecules and unlike the other crystal forms contains two entire Bence-Jones dimers in the asymmetric unit. This latter crystal form may shed some light on the formation of fibrils common to certain storage diseases.

  16. Advanced Jones calculus for the classification of periodic metamaterials

    NASA Astrophysics Data System (ADS)

    Menzel, Christoph; Rockstuhl, Carsten; Lederer, Falk

    2010-11-01

    By relying on an advanced Jones calculus, we analyze the polarization properties of light upon propagation through metamaterial slabs in a comprehensive manner. Based on symmetry considerations, we show that all periodic metamaterials may be divided into five different classes only. It is shown that each class differently affects the polarization of the transmitted light and sustains different eigenmodes. We show how to deduce these five classes from symmetry considerations and provide a simple algorithm that can be applied to decide to which class a given metamaterial belongs by measuring only the transmitted intensities.

  17. Iridoids and sesquiterpenoids from the roots of Valeriana jatamansi Jones.

    PubMed

    Dong, Fa-Wu; Liu Yang; Wu, Zhi-Kun; Wei-Gao; Zi, Chen-Ting; Dan Yang; Luo, Huai-Rong; Jun Zhou; Hu, Jiang-Miao

    2015-04-01

    Three new iridoids, jatamanvaltrates R-S (1-2) and jatamanin Q (3), as well as three new sesquiterpenoids, valeriananoids D-E (4, 5) and clovane-2β-isovaleroxy-9α-ol (6), together with nine known compounds were isolated from the roots of Valeriana jatamansi Jones. Compound 2 was the first reported iridoid with fatty acid esters in the Valerianaceae family. The structures of new compounds were established on the basis of extensive spectroscopic analysis. Moreover, all the isolates were evaluated for inhibitory activity on acetylcholinesterase (AChE). PMID:25665939

  18. Lennard-Jones and lattice models of driven fluids.

    PubMed

    Díez-Minguito, M; Garrido, P L; Marro, J

    2005-08-01

    We introduce a nonequilibrium off-lattice model for anisotropic phenomena in fluids. This is a Lennard-Jones generalization of the driven lattice-gas model in which the particles' spatial coordinates vary continuously. A comparison between the two models allows us to discuss some exceptional, hardly realistic features of the original discrete system--which has been considered a prototype for nonequilibrium anisotropic phase transitions. We thus help to clarify open issues, and discuss on the implications of our observations for future investigation of anisotropic phase transitions. PMID:16196640

  19. Advanced Jones calculus for the classification of periodic metamaterials

    SciTech Connect

    Menzel, Christoph; Rockstuhl, Carsten; Lederer, Falk

    2010-11-15

    By relying on an advanced Jones calculus, we analyze the polarization properties of light upon propagation through metamaterial slabs in a comprehensive manner. Based on symmetry considerations, we show that all periodic metamaterials may be divided into five different classes only. It is shown that each class differently affects the polarization of the transmitted light and sustains different eigenmodes. We show how to deduce these five classes from symmetry considerations and provide a simple algorithm that can be applied to decide to which class a given metamaterial belongs by measuring only the transmitted intensities.

  20. The genus Unixenus Jones, 1944 (Diplopoda, Penicillata, Polyxenida) in Australia

    PubMed Central

    Short, Megan; Huynh, Cuong

    2011-01-01

    Abstract The penicillate genus Unixenus Jones, 1944 is widespread, with species found in Africa, Madagascar, India and Australia. Each of the two Australian species was originally described from single samples from Western Australia. In this study, collections of Penicillata from museums in all states of Australia were examined to provide further details of the two described species, to revise the diagnoses for both the genus and the species, and to better understand the distribution of the two species in Australia. In addition, two new species Unixenus karajinensis sp. n. and Unixenus corticolus sp. n. are described. PMID:22303098

  1. Scale-adjusted volatility and the Dow Jones index

    NASA Astrophysics Data System (ADS)

    Ellis, Craig; Hudson, Christopher

    2007-05-01

    This paper extends research by Batten and Ellis [Econ. Lett. 72 (2001) 291] to propose a simple model of scale-adjusted volatility which measures the extent to which the Gaussian scaling law mis-estimates long-horizon volatility. Applied to the Dow Jones industrial average, the results of our model show a dramatic improvement over the Gaussian scaling law in predicting long-horizon volatility. Our model provides a general framework for estimating scaled volatility that may be also applied to other fields of study where the Hurst exponent is commonly used.

  2. Structure diagram of binary Lennard-Jones clusters

    NASA Astrophysics Data System (ADS)

    Mravlak, Marko; Kister, Thomas; Kraus, Tobias; Schilling, Tanja

    2016-07-01

    We analyze the structure diagram for binary clusters of Lennard-Jones particles by means of a global optimization approach for a large range of cluster sizes, compositions, and interaction energies and present a publicly accessible database of 180 000 minimal energy structures (http://softmattertheory.lu/clusters.html). We identify a variety of structures such as core-shell clusters, Janus clusters, and clusters in which the minority species is located at the vertices of icosahedra. Such clusters can be synthesized from nanoparticles in agglomeration experiments and used as building blocks in colloidal molecules or crystals. We discuss the factors that determine the formation of clusters with specific structures.

  3. Structure diagram of binary Lennard-Jones clusters.

    PubMed

    Mravlak, Marko; Kister, Thomas; Kraus, Tobias; Schilling, Tanja

    2016-07-14

    We analyze the structure diagram for binary clusters of Lennard-Jones particles by means of a global optimization approach for a large range of cluster sizes, compositions, and interaction energies and present a publicly accessible database of 180 000 minimal energy structures (http://softmattertheory.lu/clusters.html). We identify a variety of structures such as core-shell clusters, Janus clusters, and clusters in which the minority species is located at the vertices of icosahedra. Such clusters can be synthesized from nanoparticles in agglomeration experiments and used as building blocks in colloidal molecules or crystals. We discuss the factors that determine the formation of clusters with specific structures. PMID:27421400

  4. 3. Historic American Buildings Survey Russell Jones, Photographer June 1963NORTHWEST ...

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

    3. Historic American Buildings Survey Russell Jones, Photographer June 1963NORTHWEST VIEW - Abner Cloud House, Intersection of Canal Road & Reservoir Road Northwest, Washington, District of Columbia, DC

  5. 75 FR 71102 - Jones Canyon Hydro, LLC; Notice of Preliminary Permit Application Accepted for Filing and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-22

    ... feasibility of the Jones Canyon Pumped Storage Project (Project) near Grass Valley, Sherman County, Oregon...-foot-long, underground transmission line connecting to an existing substation; and (4)...

  6. The Jones dressing cast for safe aftercare of foot and ankle surgery. A modification of the Jones dressing bandage.

    PubMed

    Gottlieb, Tonio; Klaue, Kaj

    2013-12-01

    Aftercare of surgical procedures is not consensual in the community of foot and ankle surgeons. Although the incidence of infections following foot and ankle surgery is rare, soft tissue healing might be jeopardized after extensive and multiple approaches. We define a precise fixation technique of the foot and ankle in the immediate post-operative phase by what we call "the Jones dressing cast". This technique is a modification of the Jones dressing bandage. We compared two groups of patients (20 and 23 patients) who underwent similar operative reconstructive procedures, with and without the application of the described cast, respectively, for one week. At the two-month follow-up, we observed that the group, which was treated with the cast required less analgetics, had a reduced hospitalization time and achieved faster autonomy using crutches. It may be assumed that reduced strain to the soft tissue around the foot due to the cast may reduce the complications in the post-operative period. PMID:24095234

  7. The BQP-hardness of approximating the Jones polynomial

    NASA Astrophysics Data System (ADS)

    Aharonov, Dorit; Arad, Itai

    2011-03-01

    A celebrated important result due to Freedman et al (2002 Commun. Math. Phys. 227 605-22) states that providing additive approximations of the Jones polynomial at the kth root of unity, for constant k=5 and k>=7, is BQP-hard. Together with the algorithmic results of Aharonov et al (2005) and Freedman et al (2002 Commun. Math. Phys. 227 587-603), this gives perhaps the most natural BQP-complete problem known today and motivates further study of the topic. In this paper, we focus on the universality proof; we extend the result of Freedman et al (2002) to ks that grow polynomially with the number of strands and crossings in the link, thus extending the BQP-hardness of Jones polynomial approximations to all values to which the AJL algorithm applies (Aharonov et al 2005), proving that for all those values, the problems are BQP-complete. As a side benefit, we derive a fairly elementary proof of the Freedman et al density result, without referring to advanced results from Lie algebra representation theory, making this important result accessible to a wider audience in the computer science research community. We make use of two general lemmas we prove, the bridge lemma and the decoupling lemma, which provide tools for establishing the density of subgroups in SU(n). Those tools seem to be of independent interest in more general contexts of proving the quantum universality. Our result also implies a completely classical statement, that the multiplicative approximations of the Jones polynomial, at exactly the same values, are #P-hard, via a recent result due to Kuperberg (2009 arXiv:0908.0512). Since the first publication of those results in their preliminary form (Aharonov and Arad 2006 arXiv:quant-ph/0605181), the methods we present here have been used in several other contexts (Aharonov and Arad 2007 arXiv:quant-ph/0702008; Peter and Stephen 2008 Quantum Inf. Comput. 8 681). The present paper is an improved and extended version of the results presented by Aharonov and Arad

  8. Stereotype Threat Paradigm in Search of a Phenomenon: A Comment on Kellow and Jones's (2008) Study

    ERIC Educational Resources Information Center

    Whaley, Arthur L.

    2009-01-01

    In a recent study, Kellow and Jones apply the stereotype threat paradigm to a sample of African American students attending an urban high school. The purpose of this commentary is to provide a conceptual and methodological critique of Kellow and Jones's study. Implications for the role of Black psychologists in evaluating research on African…

  9. Essential Characteristics of an Highly Resilient Judge: A Case Study of the Honorable Richard Jones

    ERIC Educational Resources Information Center

    Ericksen, Charles Aaron

    2010-01-01

    The purpose of this study was to explore judicial resiliency through the personal experiences and perspectives of an experienced trial court judge, the Honorable Richard Jones. This exploratory case study examined the coping skills, traits, and attributes exhibited by Judge Jones over his career and in particular through the experience of…

  10. 75 FR 59966 - Safety Zone; New York Air Show at Jones Beach State Park, Wantagh, NY

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-29

    ... (75 FR 20802). We received no comments or requests for a public meeting on the proposed rule. Basis... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; New York Air Show at Jones Beach State Park... permanent safety zone for the annual New York Air Show at Jones Beach State Park in Wantagh, New York....

  11. Vectorial polarization modes platform realized with Jones vectors in mathematica

    NASA Astrophysics Data System (ADS)

    Choi, Yong-Dae; Yun, Hee-Joong

    2015-09-01

    The fundamental concept in physics of polarization propagation of electromagnetic waves is newly understood to be a cardinal keyword in quantum cryptography transport technology and the Standard Model. Interactive visualization of the propagation mechanism of polarized electromagnetism in a medium with its helicity has received attention recently from scientists in the age of information and communication. This study presents a new dynamic polarization platform that presents the polarization modes of a transverse electromagnetic wave by using Jones vectors calculations in the symbolic program Mathematica to convert the state of polarization through the arrangement of the optical elements. The platform simulates a propagation process that satisfies Maxwell's two vector equations precisely with the vectorial nature of the electromagnetic wave.

  12. Sir Robert Jones: orthopaedic surgeon and war hero.

    PubMed

    Di Matteo, Berardo; Tarabella, Vittorio; Filardo, Giuseppe; Tomba, Patrizia; Viganò, Anna; Kon, Elizaveta; Marcacci, Maurilio

    2015-05-01

    The First World War was a very harsh conflict and statistics recorded a great number of victims, both soldiers and civilians. One hundred years later, the whole world is commemorating the Great War by celebrating people and events that contributed to shaping the XX century. Beyond remembering political figures, war heroes or even famous battles, it is also important to underline the contribution of those who devoted their efforts to improve the living conditions during war campaigns. This is the case of Sir Robert Jones, one of the fathers of XX century orthopaedics, who contributed to re-organize the military medical assistance during war times and whose teachings, coming directly from his "on the field" experience, inspired an entire generation of European surgeons. PMID:25435061

  13. The Lennard-Jones melting line and isomorphism

    NASA Astrophysics Data System (ADS)

    Heyes, D. M.; Brańka, A. C.

    2015-12-01

    The location of the melting line (ML) of the Lennard-Jones (LJ) system and its associated physical properties are investigated using molecular dynamics computer simulation. The radial distribution function and the behavior of the repulsive and attractive parts of the potential energy indicate that the ML is not a single isomorph, but the isomorphic state evolves gradually with temperature, i.e., it is only "locally isomorphic." The state point dependence of the unitless isomorphic number, X ˜ , for a range of static and dynamical properties of the LJ system in the solid and fluid states, and for fluid argon, are also reported. The quantity X ˜ typically varies most with state point in the vicinity of the triple point and approaches a plateau in the high density (temperature) limit along the ML.

  14. Phase behavior of the 38-atom Lennard-Jones cluster

    SciTech Connect

    Sehgal, Ray M.; Maroudas, Dimitrios E-mail: ford@ecs.umass.edu; Ford, David M. E-mail: ford@ecs.umass.edu

    2014-03-14

    We have developed a coarse-grained description of the phase behavior of the isolated 38-atom Lennard-Jones cluster (LJ{sub 38}). The model captures both the solid-solid polymorphic transitions at low temperatures and the complex cluster breakup and melting transitions at higher temperatures. For this coarse model development, we employ the manifold learning technique of diffusion mapping. The outcome of the diffusion mapping analysis over a broad temperature range indicates that two order parameters are sufficient to describe the cluster's phase behavior; we have chosen two such appropriate order parameters that are metrics of condensation and overall crystallinity. In this well-justified coarse-variable space, we calculate the cluster's free energy landscape (FEL) as a function of temperature, employing Monte Carlo umbrella sampling. These FELs are used to quantify the phase behavior and onsets of phase transitions of the LJ{sub 38} cluster.

  15. Equation of State for the Lennard-Jones Fluid

    NASA Astrophysics Data System (ADS)

    Thol, Monika; Rutkai, Gabor; Köster, Andreas; Lustig, Rolf; Span, Roland; Vrabec, Jadran

    2016-06-01

    An empirical equation of state correlation is proposed for the Lennard-Jones model fluid. The equation in terms of the Helmholtz energy is based on a large molecular simulation data set and thermal virial coefficients. The underlying data set consists of directly simulated residual Helmholtz energy derivatives with respect to temperature and density in the canonical ensemble. Using these data introduces a new methodology for developing equations of state from molecular simulation. The correlation is valid for temperatures 0.5 < T/Tc < 7 and pressures up to p/pc = 500. Extensive comparisons to simulation data from the literature are made. The accuracy and extrapolation behavior are better than for existing equations of state.

  16. Corresponding states law for a generalized Lennard-Jones potential.

    PubMed

    Orea, P; Romero-Martínez, A; Basurto, E; Vargas, C A; Odriozola, G

    2015-07-14

    It was recently shown that vapor-liquid coexistence densities derived from Mie and Yukawa models collapse to define a single master curve when represented against the difference between the reduced second virial coefficient at the corresponding temperature and that at the critical point. In this work, we further test this proposal for another generalization of the Lennard-Jones pair potential. This is carried out for vapor-liquid coexistence densities, surface tension, and vapor pressure, along a temperature window set below the critical point. For this purpose, we perform molecular dynamics simulations by varying the potential softness parameter to produce from very short to intermediate attractive ranges. We observed all properties to collapse and yield master curves. Moreover, the vapor-liquid curve is found to share the exact shape of the Mie and attractive Yukawa. Furthermore, the surface tension and the logarithm of the vapor pressure are linear functions of this difference of reduced second virial coefficients. PMID:26178115

  17. Lennard-Jones fluid-fluid interfaces under shear

    NASA Astrophysics Data System (ADS)

    Galliero, Guillaume

    2010-05-01

    Using nonequilibrium molecular dynamics simulations on simple Lennard-Jones binary mixtures, we have studied the behavior of planar fluid-fluid interfaces undergoing shear flow. When the miscibility is low enough, a slip together with a partial depletion have been noticed at the interface between the two fluid phases. The slip length can reach a value equal to some molecular diameters and the corresponding interfacial viscosity can be two times smaller than the value in the bulk. It is shown how the omission of this slip may lead to flow-rate misevaluation when dealing with a multiphase flow in a nanoporous medium even for non polymer fluids. In addition, using the simulation results, a simple relation between interfacial tension and interfacial viscosity is proposed for the monoatomic systems studied in this work. Finally, it is shown that the interfacial viscosity cannot be fully accounted for by estimating the local viscosity deduced from the local thermodynamic properties of the interface.

  18. Computationally Useful Bridge Diagram Series. III. Lennard-Jones Mixtures

    SciTech Connect

    Dyer, Kippi M.; Perkyns, John S.; Pettitt, Bernard M.

    2002-06-01

    The first two orders of bridge diagrams for the f-bond expansion and the h-bond expansion are calculated for a binary mixture of Lennard-Jones spheres. The method used follows the Legendre polynomial integration methods outlined in the first two papers of this series. As for the pure fluid cases, the thermodynamic results which follow from these methods are found to be in reasonable agreement with the simulation result. Analysis of the thermodynamic and structural results in comparison to the best current bridge function approximations indicate that accurate descriptions of higher order mixtures will require methods beyond the current mean field treatments which are of utility in simple fluids. The methods given are unfortunately not computationally convenient at highest order; however, the lower order diagrams are both accessible and give reasonable numerical results.

  19. Computationally useful bridge diagram series. III. Lennard-Jones mixtures

    NASA Astrophysics Data System (ADS)

    Dyer, Kippi; Perkyns, John; Pettitt, B. Montgomery

    2002-06-01

    The first two orders of bridge diagrams for the f-bond expansion and the h-bond expansion are calculated for a binary mixture of Lennard-Jones spheres. The method used follows the Legendre polynomial integration methods outlined in the first two papers of this series. As for the pure fluid cases, the thermodynamic results which follow from these methods are found to be in reasonable agreement with the simulation result. Analysis of the thermodynamic and structural results in comparison to the best current bridge function approximations indicate that accurate descriptions of higher order mixtures will require methods beyond the current mean field treatments which are of utility in simple fluids. The methods given are unfortunately not computationally convenient at highest order; however, the lower order diagrams are both accessible and give reasonable numerical results.

  20. Freezing point depression in model Lennard-Jones solutions

    NASA Astrophysics Data System (ADS)

    Koschke, Konstantin; Jörg Limbach, Hans; Kremer, Kurt; Donadio, Davide

    2015-09-01

    Crystallisation of liquid solutions is of uttermost importance in a wide variety of processes in materials, atmospheric and food science. Depending on the type and concentration of solutes the freezing point shifts, thus allowing control on the thermodynamics of complex fluids. Here we investigate the basic principles of solute-induced freezing point depression by computing the melting temperature of a Lennard-Jones fluid with low concentrations of solutes, by means of equilibrium molecular dynamics simulations. The effect of solvophilic and weakly solvophobic solutes at low concentrations is analysed, scanning systematically the size and the concentration. We identify the range of parameters that produce deviations from the linear dependence of the freezing point on the molal concentration of solutes, expected for ideal solutions. Our simulations allow us also to link the shifts in coexistence temperature to the microscopic structure of the solutions.

  1. The Double Jones Birefringence in Magneto-electric Medium

    PubMed Central

    Mahmood, Waqas; Zhao, Qing

    2015-01-01

    In this paper, the Maxwell’s equations for a tensorial magneto-electric (ME) medium are solved, which is an extension to the work on the uniaxial anisotropic nonmagnetic medium. The coefficients of the dielectric permittivity, magnetic permeability, and of the magneto-electric effect are considered as tensors. The polarization is shown lying in the plane of two perpendicular independent vectors, and the relationship for the transverse polarization is given. The propagation of an electromagnetic wave through a ME medium gives rise to double Jones birefringence. Besides, the condition for an independent phenomenon of D’yakonov surface wave in a magneto-isotropic but with magneto-electric medium is given, which is measurable experimentally when the incident angle is . Lastly, it is shown that the parameter for the magneto-electric effect plays a role in the damping of the wave. PMID:26354609

  2. Water in the presence of inert Lennard-Jones obstacles

    NASA Astrophysics Data System (ADS)

    Kurtjak, Mario; Urbic, Tomaz

    2014-04-01

    Water confined by the presence of a 'sea' of inert obstacles was examined. In the article, freely mobile two-dimensional Mercedes-Benz (MB) water put to a disordered, but fixed, matrix of Lennard-Jones disks was studied by the Monte Carlo computer simulations. For the MB water molecules in the matrix of Lennard-Jones disks, we explored the structures, hydrogen-bond-network formation and thermodynamics as a function of temperature and size and density of matrix particles. We found that the structure of model water is perturbed by the presence of the obstacles. Density of confined water, which was in equilibrium with the bulk water, was smaller than the density of the bulk water and the temperature dependence of the density of absorbed water did not show the density anomaly in the studied temperature range. The behaviour observed as a consequence of confinement is similar to that of increasing temperature, which can for a matrix lead to a process similar to capillary evaporation. At the same occupancy of space, smaller matrix molecules cause higher destruction effect on the absorbed water molecules than the bigger ones. We have also tested the hypothesis that at low matrix densities the obstacles induce an increased ordering and 'hydrogen bonding' of the MB model molecules, relative to pure fluid, while at high densities the obstacles reduce MB water structuring, as they prevent the fluid to form good 'hydrogen-bonding' networks. However, for the size of matrix molecules similar to that of water, we did not observe this effect.

  3. 33 CFR 165.159 - Safety Zone: New York Air Show at Jones Beach State Park, Wantagh, NY.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Jones Beach State Park, Wantagh, NY. 165.159 Section 165.159 Navigation and Navigable Waters COAST GUARD... § 165.159 Safety Zone: New York Air Show at Jones Beach State Park, Wantagh, NY. (a) Location. The following waters of the Atlantic Ocean off of Jones Beach State Park, Wantagh, NY are designated a...

  4. Update on diagnosis of acute rheumatic fever: 2015 Jones criteria

    PubMed Central

    Eroğlu, Ayşe Güler

    2016-01-01

    In the final Jones criteria, different diagnostic criteria were established for the diagnosis of acute rheumatic fever for low risk and moderate-high risk populations. Turkey was found to be compatible with moderate-high risk populations as a result of regional screenings performed in terms of acute rheumatic fever and rheumatic heart disease. The changes in the diagnostic criteria for low-risk populations include subclinical carditis found on echocardiogram as a major criterion in addition to carditis found clinically and a body temperature of 38.5°C and above as a minor criterion. In moderate-high risk populations including Turkey, subclinical carditis found on echocardiogram in addition to clinical carditis is used as a major criterion as a new amendment. In addition, aseptic monoarthritis and polyarthralgia are used as major criteria in addition to migratory arthritis and monoarhtralgia is used as a minor criterion among joint findings. However, differentiation of subclinical carditis from physiological valve regurgitation found in healthy individuals and exclusion of other diseases involving joints when aseptic monoarthritis and polyarthralgia are used as major criteria are very important. In addition, a body temperature of 38°C and above and an erythrocyte sedimentation rate of 30 mm/h and above have been accepted as minor criteria. The diagnostic criteria for the first attack have not been changed; three minor findings have been accepted in presence of previous sterptococcal infection in addition to the old cirteria for recurrent attacks. In the final Jones criteria, it has been recommended that patients who do not fully meet the diagnostic criteria of acute rheumatic fever should be treated as acute rheumatic fever if another diagnosis is not considered and should be followed up with benzathine penicilin prophylaxis for 12 months. It has been decided that these patients be evaluated 12 months later and a decision for continuation or discontinuation of

  5. Update on diagnosis of acute rheumatic fever: 2015 Jones criteria.

    PubMed

    Eroğlu, Ayşe Güler

    2016-03-01

    In the final Jones criteria, different diagnostic criteria were established for the diagnosis of acute rheumatic fever for low risk and moderate-high risk populations. Turkey was found to be compatible with moderate-high risk populations as a result of regional screenings performed in terms of acute rheumatic fever and rheumatic heart disease. The changes in the diagnostic criteria for low-risk populations include subclinical carditis found on echocardiogram as a major criterion in addition to carditis found clinically and a body temperature of 38.5°C and above as a minor criterion. In moderate-high risk populations including Turkey, subclinical carditis found on echocardiogram in addition to clinical carditis is used as a major criterion as a new amendment. In addition, aseptic monoarthritis and polyarthralgia are used as major criteria in addition to migratory arthritis and monoarhtralgia is used as a minor criterion among joint findings. However, differentiation of subclinical carditis from physiological valve regurgitation found in healthy individuals and exclusion of other diseases involving joints when aseptic monoarthritis and polyarthralgia are used as major criteria are very important. In addition, a body temperature of 38°C and above and an erythrocyte sedimentation rate of 30 mm/h and above have been accepted as minor criteria. The diagnostic criteria for the first attack have not been changed; three minor findings have been accepted in presence of previous sterptococcal infection in addition to the old cirteria for recurrent attacks. In the final Jones criteria, it has been recommended that patients who do not fully meet the diagnostic criteria of acute rheumatic fever should be treated as acute rheumatic fever if another diagnosis is not considered and should be followed up with benzathine penicilin prophylaxis for 12 months. It has been decided that these patients be evaluated 12 months later and a decision for continuation or discontinuation of

  6. Statistics of the Jones matrix of fibers affected by polarization mode dispersion.

    PubMed

    Bononi, A; Vannucci, A

    2001-05-15

    We carry out a statistical characterization of Jones matrix eigenvalues and eigenmodes to gain deeper insight into recently proposed fiber models based on Jones matrix spectral decomposition. A set of linear dynamic equations for the Pauli coordinates of the Jones matrix is established. Using stochastic calculus, we determine the joint distribution of the retardation angle of the eigenmodes and, indirectly, their autocorrelation function. The correlation bandwidth of the eigenmodes is found to be radical2/3 that of the polarization mode dispersion vector. The results agree well with simulations performed with the standard retarded plate model. PMID:18040416

  7. Melting transition of Lennard-Jones fluid in cylindrical pores

    SciTech Connect

    Das, Chandan K.; Singh, Jayant K.

    2014-05-28

    Three-stage pseudo-supercritical transformation path and multiple-histogram reweighting technique are employed for the determination of solid-liquid coexistence of the Lennard-Jones (12-6) fluid, in a structureless cylindrical pore of radius, R, ranging from 4 to 20 molecular diameters. The Gibbs free energy difference is evaluated using thermodynamic integration method by connecting solid and liquid phases under confinement via one or more intermediate states without any first order phase transition among them. The thermodynamic melting temperature, T{sub m}, is found to oscillate for pore size, R < 8, which is in agreement with the behavior observed for the melting temperature in slit pores. However, T{sub m} for almost all pore sizes is less than the bulk case, which is contrary to the behavior seen for the slit pore. The oscillation in T{sub m} decays at around pore radius R = 8, and beyond that shift in the melting temperature with respect to the bulk case is in line with the prediction of the Gibbs-Thomson equation.

  8. Metastable Lennard-Jones fluids. II. Thermal conductivity.

    PubMed

    Baidakov, Vladimir G; Protsenko, Sergey P

    2014-06-01

    The method of equilibrium molecular dynamics with the use of the Green-Kubo formalism has been used to calculate the thermal conductivity λ in stable and metastable regions of a Lennard-Jones fluid. Calculations have been made in the range of reduced temperatures 0.4 ≤ T* = k(b)T/ε ≤ 2.0 and densities 0.01 ≤ ρ* = ρσ³ ≤ 1.2 on 15 isotherms for 234 states, 130 of which refer to metastable regions: superheated and supercooled liquids, supersaturated vapor. Equations have been built up which describe the dependence of the regular part of the thermal conductivity on temperature and density, and also on temperature and pressure. It has been found that in (p, T) variables in the region of a liquid-gas phase transition a family of lines of constant value of excess thermal conductivity Δλ = λ - λ0, where λ0 is the thermal conductivity of a dilute gas, has an envelope which coincides with the spinodal. Thus, at the approach to the spinodal of a superheated liquid and supersaturated vapor (∂Δλ/∂p)T → ∞, (∂Δλ/∂T)p → ∞. PMID:24908025

  9. US SPACE CAMP CALIFORNIA - DAY CAMP GRAND OPENING WITH KEVIN JONES (WHISMAN SCHOOL) AND LUCRETIA

    NASA Technical Reports Server (NTRS)

    1996-01-01

    US SPACE CAMP CALIFORNIA - DAY CAMP GRAND OPENING WITH KEVIN JONES (WHISMAN SCHOOL) AND LUCRETIA SUTHERLIN (MCNAIR SCHOOL). AMES SPONSORED STUDENTS AND RACHAEL QUIRING (STAFF) - AUTOGRAPH SIGNING BY Astronaut Wally Schirra

  10. Jones calculus modeling and analysis of the thermal distortion in a Ti:sapphire laser amplifier.

    PubMed

    Cho, Seryeyohan; Jeong, Jihoon; Yu, Tae Jun

    2016-06-27

    The mathematical modeling of an anisotropic Ti:sapphire crystal with a significant thermal load is performed. The model is expressed by the differential Jones matrix. A thermally induced distortion in the chirped-pulse amplification process is shown by the solution of the differential Jones matrix. Using this model, the thermally distorted spatio-temporal laser beam shape is calculated for a high-power and high-repetition-rate Ti:sapphire amplifier. PMID:27410590

  11. Energy landscapes of quantum Lennard-Jones solids.

    PubMed

    Chakravarty, Charusita

    2011-06-30

    To generalize inherent structure analysis to understand structural changes in quantum liquids and solids, differences between classical (V(x)) and quantum-corrected (U(qeff)(x)) energy landscapes are estimated as a function of the de Boer parameter (Λ). Path integral simulations of quantum Lennard-Jones solids are performed at zero pressure and a dimensionless reduced temperature of 0.123, corresponding to an absolute temperature of 4.2K. At constant temperature and pressure, Λ is increased from the classical limit of zero to Λ = 0.28, corresponding to para-H(2). Increasing quantum delocalization effects result in a continuous decrease in density and local order but without a transition to a disordered, liquid state. The inherent structure landscape of bulk systems is strongly dependent on density with the energy and stability of crystalline minima decreasing relative to that of amorphous packing minima as the system is stretched. For Λ ≈ 0.23, the volume fluctuations in quantum solids are sufficient to result in sampling of disordered minima while for Λ = 0.28, the underlying classical inherent structures are completely disordered, indicating that the topography of U(qeff)(x) and V(x) are qualitatively different for such values of Λ. To assess the nature of the quantum-corrected energy landscape, effective pair potentials are defined by u(qeff)(r) = -kT ln g(r) using the pair correlation function (g(r)) of the quantum system in the neighborhood of the first peak. Our results show that as Λ increases, the pair potentials become increasingly softer, shallower, and of increasing range with a shifting of the potential minimum to larger distances. For example, the reduction of the entropy of fusion and melting temperatures of quantum solids with increasing Λ are analogous to the changes in thermodynamics of melting seen in classical solids with increasing range and softness of interactions. The energy landscapes associated with such coarse-grained potentials

  12. Solid-liquid phase equilibrium for binary Lennard-Jones mixtures

    NASA Astrophysics Data System (ADS)

    Hitchcock, Monica R.; Hall, Carol K.

    1999-06-01

    Solid-liquid phase diagrams are calculated for binary mixtures of Lennard-Jones spheres using Monte Carlo simulation and the Gibbs-Duhem integration technique of Kofke. We calculate solid-liquid phase diagrams for the model Lennard-Jones mixtures: argon-methane, krypton-methane, and argon-krypton, and compare our simulation results with experimental data and with Cottin and Monson's recent cell theory predictions. The Lennard-Jones model simulation results and the cell theory predictions show qualitative agreement with the experimental phase diagrams. One of the mixtures, argon-krypton, has a different phase diagram than its hard-sphere counterpart, suggesting that attractive interactions are an important consideration in determining solid-liquid phase behavior. We then systematically explore Lennard-Jones parameter space to investigate how solid-liquid phase diagrams change as a function of the Lennard-Jones diameter ratio, σ11/σ22, and well-depth ratio, ɛ11/ɛ22. This culminates in an estimate of the boundaries separating the regions of solid solution, azeotrope, and eutectic solid-liquid phase behavior in the space spanned by σ11/σ22 and ɛ11/ɛ22 for the case σ11/σ22<0.85.

  13. Cephalometric effects of the Jones Jig appliance followed by fixed appliances in Class II malocclusion treatment

    PubMed Central

    Patel, Mayara Paim; Henriques, José Fernando Castanha; de Freitas, Karina Maria Salvatore; Grec, Roberto Henrique da Costa

    2014-01-01

    Objective The aim of this study was to cephalometrically assess the skeletal and dentoalveolar effects of Class II malocclusion treatment performed with the Jones Jig appliance followed by fixed appliances. Methods The sample comprised 25 patients with Class II malocclusion treated with the Jones Jig appliance followed by fixed appliances, at a mean initial age of 12.90 years old. The mean time of the entire orthodontic treatment was 3.89 years. The distalization phase lasted for 0.85 years, after which the fixed appliance was used for 3.04 years. Cephalograms were used at initial (T1), post-distalization (T2) and final phases of treatment (T3). For intragroup comparison of the three phases evaluated, dependent ANOVA and Tukey tests were used. Results Jones Jig appliance did not interfere in the maxillary and mandibular component and did not change maxillomandibular relationship. Jones Jig appliance promoted distalization of first molars with anchorage loss, mesialization and significant extrusion of first and second premolars, as well as a significant increase in anterior face height at the end of treatment. The majority of adverse effects that occur during intraoral distalization are subsequently corrected during corrective mechanics. Buccal inclination and protrusion of mandibular incisors were identified. By the end of treatment, correction of overjet and overbite was observed. Conclusions Jones Jig appliance promoted distalization of first molars with anchorage loss represented by significant mesial movement and extrusion of first and second premolars, in addition to a significant increase in anterior face height. PMID:25162565

  14. Phase diagram of power law and Lennard-Jones systems: Crystal phases

    SciTech Connect

    Travesset, Alex

    2014-10-28

    An extensive characterization of the low temperature phase diagram of particles interacting with power law or Lennard-Jones potentials is provided from Lattice Dynamical Theory. For power law systems, only two lattice structures are stable for certain values of the exponent (or softness) (A15, body centered cube (bcc)) and two more (face centered cubic (fcc), hexagonal close packed (hcp)) are always stable. Among them, only the fcc and bcc are equilibrium states. For Lennard-Jones systems, the equilibrium states are either hcp or fcc, with a coexistence curve in pressure and temperature that shows reentrant behavior. The hcp solid never coexists with the liquid. In all cases analyzed, for both power law and Lennard-Jones potentials, the fcc crystal has higher entropy than the hcp. The role of anharmonic terms is thoroughly analyzed and a general thermodynamic integration to account for them is proposed.

  15. Systematic investigation of theories of transport in the Lennard-Jones fluid

    NASA Astrophysics Data System (ADS)

    Dyer, Kippi M.; Pettitt, B. M.; Stell, George

    2007-01-01

    Three kinetic theories of transport are investigated for the single-species Lennard-Jones model fluid. Transport coefficients, including diffusion, shear, and bulk viscosity, are calculated from these theories for the Lennard-Jones fluid across the fluid regions of the phase diagram. The results are systematically compared against simulation. It is found that for each transport property considered, there is at least one theoretical result based on approximations that have been systematically derived from a first-principles starting point that is quantitatively useful over a wide range of densities and temperatures. To the authors' knowledge, this article constitutes the first such compendium of results for the Lennard-Jones model fluid that has been assembled.

  16. Gingival Enlargement in a Case of Variant Jones Syndrome: a Case Report

    PubMed Central

    DA, Roopa; Singh, Shinkhala; Gupta, Ira; Gopal, Saumiya

    2016-01-01

    Gingival enlargement can be caused by a variety of etiological factors like inflammation, drugs, and systemic diseases or can be presented as a part of a syndrome. One such syndrome is Jones Syndrome, which is associated with gingival enlargement and progressive hearing loss. We present here a case of fifteen-year-old boy with gingival enlargement, hearing loss, and generalized alveolar bone loss and diagnosed as Jones syndrome. The diagnosis was made based on history, clinical, radiographic, and histopathological findings. Gingival enlargement was surgically managed using gingivectomy and no recurrence was observed. The patient showed remarkable esthetical and functional improvement. PMID:26966711

  17. Gingival Enlargement in a Case of Variant Jones Syndrome: a Case Report.

    PubMed

    DA, Roopa; Singh, Shinkhala; Gupta, Ira; Gopal, Saumiya

    2016-03-01

    Gingival enlargement can be caused by a variety of etiological factors like inflammation, drugs, and systemic diseases or can be presented as a part of a syndrome. One such syndrome is Jones Syndrome, which is associated with gingival enlargement and progressive hearing loss. We present here a case of fifteen-year-old boy with gingival enlargement, hearing loss, and generalized alveolar bone loss and diagnosed as Jones syndrome. The diagnosis was made based on history, clinical, radiographic, and histopathological findings. Gingival enlargement was surgically managed using gingivectomy and no recurrence was observed. The patient showed remarkable esthetical and functional improvement. PMID:26966711

  18. Mood and emotion in sport: a response to Jones, Mace, and Williams (2000).

    PubMed

    Lane, A M

    2000-10-01

    Examination of the mood and performance relationship in sport has been an important line of investigation in sport psychology for over 20 years. Recent research has challenged the notion that the Profile of Mood States is the instrument of choice. It has also moved away from the notion that successful performance is associated with an 'iceberg' profile (Morgan, 1980), arguing that researchers should consider mood and emotion as distinguishable constructs (Jones, Mace, & Williams, 2000; Lane & Terry, 2000. In the present paper, I expand the discussion on mood research in sport by re-examining some of the findings of Jones, et al. in the light of recent work. PMID:11065327

  19. Dynamic Loading Assessment at the Fifth Metatarsal in Elite Athletes with a history of Jones Fracture

    PubMed Central

    Hunt, Kenneth; Goeb, Yannick

    2016-01-01

    Objectives: Fractures of the proximal metaphysis of the fifth metatarsal (i.e., Jones fractures) are common in the athletic population and frequently require surgical fixation to optimize healing rates and return to sport. Subtle hindfoot varus alignment, which likely results in greater forces at the fifth metatarsal, has been associated with increased risk of Jones fractures due to presumed increase in forces on the lateral foot. The goal of the present study was to dynamically assess plantar pressure loads at the fifth metatarsal in elite athletes with a history of Jones fracture. We hypothesize that athletes who have suffered Jones fractures will apply significantly higher loads at the fifth metatarsal base during athletic activities compared to matched uninjured athletes. Methods: Sixteen elite, competitive athletes were recruited to participate. Eight athletes had a history of Jones fracture and eight age, gender and position-matched athletes without a history of foot injury were recruited as controls. While wearing calibrated, wireless pressure mapping insoles, all athletes performed a standardized series of athletic movements including walking, running and cutting. Tests were repeated with the patient’s standard corrective insole. Peak pressure, mean pressure, maximum force, and force-time integral (i.e., impulse) were recorded for each activity. Comparison between groups was performed using a paired Wilcoxon Sign Rank test. Results: Athletes with a history of Jones fracture showed a significantly increased peak pressure (183 ±23 kPA vs. 138±7 kPA), mean pressure (124±14 kPA vs. 95±4 kPA), and maximum force (15±1.2%BW vs. 12±1.2%BW) at the fifth metatarsal base during walking and running compared to uninjured matched controls (all P<0.05). Use of the corrective orthotic insole did not significantly reduce peak or mean pressure, maximum force, or impulse at the fifth metatarsal base during running or cutting. Conclusion: Athletes with a history of

  20. Passive component based multifunctional Jones matrix swept source optical coherence tomography for Doppler and polarization imaging.

    PubMed

    Lim, Yiheng; Hong, Young-Joo; Duan, Lian; Yamanari, Masahiro; Yasuno, Yoshiaki

    2012-06-01

    We present a fiber based multifunctional Jones matrix swept source optical coherence tomography (SS-OCT) system for Doppler and polarization imaging. Jones matrix measurement without using active components such as electro-optic modulators is realized by incident polarization multiplexing based on independent delay of two orthogonal polarization states and polarization diversity detection. In addition to polarization sensitivity, this system measures Doppler flow without extra hardware for phase stabilized SS-OCT detection. An eighth-wave plate was measured to demonstrate the polarization detection accuracy. The optic nerve head of a retina was measured in vivo. Detailed vasculature and birefringent structures were investigated simultaneously. PMID:22660086

  1. 77 FR 38051 - Jones Canyon Hydro, LLC; Notice of Application for Amendment of Preliminary Permit Accepted for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-26

    ...; and (7) change the name of the project from ``Jones Canyon Pumped Storage Project'' to ``Oregon Winds... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Jones Canyon Hydro, LLC; Notice of Application for Amendment of...

  2. Ashley and Junie B. Jones: A Struggling Reader Makes a Connection to Literacy

    ERIC Educational Resources Information Center

    Wickstrom, Carol D.; Curtis, Joan Scott; Daniel, Kayla

    2005-01-01

    This case study of a struggling reader suggests that learning to read is not necessarily about using the right program, but rather about making the right connection. This case describes how Ashley, a child with special needs, came to literacy in her own way in the company of Barbara Park's fictional character, Junie B. Jones, a girl about her age…

  3. Creative Imagination and Subjective Agency in Wynne-Jones' "The Maestro"

    ERIC Educational Resources Information Center

    Cairns, Sue Ann

    2009-01-01

    The Canadian young adult novel "The Maestro" by Tim Wynne-Jones foregrounds the relationship between imagination and subjective agency. While Burl uses his imagination at the beginning to protect himself from his abusive father, his fantasies become dress rehearsals for small performances that allow him to try on new identities and exercise…

  4. The Jones-Zimmermann Academic Mentoring Program: A Follow-up Study

    ERIC Educational Resources Information Center

    Castro, Maria Isabel

    2009-01-01

    This researcher examined the continuum of the Jones-Zimmermann Academic Mentoring Program (J-ZAMP) after its initial three years and its sustainability of the first cohort at the high school level. I addressed the academic mentoring program's long and short term goals by identifying the first cohort of mentees, their present status in high…

  5. Malaria and the Decline of Ancient Greece: Revisiting the Jones Hypothesis in an Era of Interdisciplinarity

    ERIC Educational Resources Information Center

    Baron, Christopher; Hamlin, Christopher

    2015-01-01

    Between 1906 and 1909 the biologist Ronald Ross and the classicist W.H.S. Jones pioneered interdisciplinary research in biology and history in advancing the claim that malaria had been crucial in the decline of golden-age Greece (fourth century BCE). The idea had originated with Ross, winner of the Nobel Prize for demonstrating the importance of…

  6. Interpreting Error Patterns in Nonword Repetition Tasks: A Commentary on Tamburelli, Jones, Gobet & Pine (2012)

    ERIC Educational Resources Information Center

    Marshall, Chloe R.

    2012-01-01

    The study by Tamburelli, Jones, Gobet, and Pine (2012; henceforth TJGP) is a very welcome addition to the body of work concerning nonword repetition in typical development. TJGP go beyond previous work in considering three syllabic positions--onset, nucleus, and coda--with the aim of investigating how the positional role of phonemes within the…

  7. OXYGEN TRANSFER EFFICIENCY SURVEYS AT THE JONES ISLAND TREATMENT PLANTS - 1985-1988

    EPA Science Inventory

    Ceramic plate diffusers were among the earliest forms of fine pore diffusers used for oxygen transfer in activated sludge treatment. hey have been successfully used for over 60 years in the Jones Island West Plant of the Milwaukee Metropolitan Sewerage District and, since initial...

  8. The Representation of Latinos and the Use of Spanish: A Critical Content Analysis of "Skippyjon Jones"

    ERIC Educational Resources Information Center

    Martínez-Roldan, Carmen M.

    2013-01-01

    This study illustrates the presence of Mock Spanish in some English-based picture books and the ways this usage misrepresents Latino people, language, and culture. The author conducted a critical content analysis of five Skippyjon Jones books. Her guiding question was, How is language used, particularly Spanish, in these English texts, and what…

  9. Don't Settle: Leslie Monsalve-Jones--New Mexico State Library

    ERIC Educational Resources Information Center

    Library Journal, 2005

    2005-01-01

    Leslie Monsalve-Jones is a library technician with the New Mexico State Library, responsible for claiming documents that state agencies don't submit. She also maintains the collection and can immediately track down any requested document. In short, she is the kind of worker whose price is above rubies but whose pay is slightly above pebbles. And…

  10. On the Myth of the Crisis of Representation: A Response to Gilbourne, Jones and Jordan

    ERIC Educational Resources Information Center

    Gard, Michael

    2014-01-01

    The author observes that, in "Applied Utility and the Auto-Ethnographic Short Story: Persuasions for, and Illustrations of, Writing Critical Social Science," Gilbourne, Jones and Jordan present claims about why we might choose to represent auto-ethnographic data in a literary form such as short story and for the "potential" or…

  11. The Game TV Plays: Or, Why an English Teacher Came to Hate Barnaby Jones.

    ERIC Educational Resources Information Center

    Shaw, Patrick W.

    The message of current popular television shows in which the hero is, or appears to be, a dumb clod (e.g., Archie Bunker, Fred Sanford, Columbo, and Barnaby Jones), apparently is that corruption may be equated with articulation, wealth, and education, while virtue may be equated with poverty and, often, illiteracy. Unfortunately, the effect of…

  12. Understanding the interfacial behavior in isopycnic Lennard-Jones mixtures by computer simulations.

    PubMed

    Garrido, José Matías; Piñeiro, Manuel M; Mejía, Andrés; Blas, Felipe J

    2016-01-14

    The physical characterization of the singular interfacial behavior of heterogeneous fluid systems is a very important step in preliminary stages of the design process, and also in the subsequent procedures for the determination of the optimal operating conditions. Molar isopycnicity or molar density inversion is a special case of phase equilibrium behavior that directly affects the relative position of phases in heterogeneous mixtures, without being affected by gravitational fields. This work is dedicated to characterize the impact of molar density inversion on the interfacial properties of Lennard-Jones binary mixtures. The results and specific trends of the molar density inversion phenomena on the peculiar calculated composition profiles across the interface and interfacial tensions are explored by using canonical molecular dynamics simulations of the Lennard-Jones binary mixtures. Our results show that the density inversion causes drastic changes in the density profiles of the mixtures. In particular, symmetrical and equal-sized Lennard-Jones mixtures always exhibit desorption along the interfacial zone, i.e. the interfacial concentration profiles show a relative minimum at the interface of the total density profiles that increases when the dispersive energy parameter (ε(ij)) between unlike species decreases. However, as the asymmetry of the Lennard-Jones mixtures increases (σ(i) ≠ σ(j)), the concentration profiles display a relative maximum at the interface, which implies the adsorption of the total density profiles along the interfacial zone. PMID:26660062

  13. PHYTOREMEDIATION OF DREDGED SEDIMENTS: A CASE STUDY AT THE JONES ISLAND CDF

    EPA Science Inventory

    The Jones Island Confined Disposal Facility (CDF) is a 44 acre in-lake area that receives dredged material from Milwaukee Harbor and the surrounding waterways. Some of those materials are contaminated with industrial waste and urban run-off. The CDF is nearing the end of its desi...

  14. Freezing and melting equations for the n-6 Lennard-Jones systems

    NASA Astrophysics Data System (ADS)

    Khrapak, Sergey A.; Ning, Ning

    2016-05-01

    We generalize previous approach of Khrapak and Morfill [J. Chem. Phys. 134, 094108 (2011)] to construct simple and sufficiently accurate freezing and melting equations for the conventional Lennard-Jones (LJ) system to n-6 LJ systems, using the accurate results for the triple points of these systems published by Sousa et al. [J. Chem. Phys. 136, 174502 (2012)].

  15. Foucault and Colonial Strategy in Douglas C. Jones' "Arrest Sitting Bull"

    ERIC Educational Resources Information Center

    Murphy, Peter G.

    2004-01-01

    "Arrest Sitting Bull," a novel written by Douglas C. Jones that relates the personal stories of individuals involved in the military and the political domination of the Sioux Indian during the period leading to the Sitting Bull killing is described. The incessant quest to establish and maintain control and the integral roles played by fear and…

  16. Influence of strain on transport in dense Lennard-Jones systems

    NASA Astrophysics Data System (ADS)

    Petravic, Janka

    2004-04-01

    We study the shear stress relaxation and temperature dependence of the diffusion coefficient, viscosity, and thermal conductivity along a high-density Lennard-Jones isochore of the reduced density of 1.0, as it crosses the freezing and melting lines, in equilibrium and under constant strain.

  17. OXYGEN TRANSFER EFFICIENCY SURVEYS AT THE JONES ISLAND TREATMENT PLANTS - 1985-1988

    EPA Science Inventory

    Ceramic plate diffusers were among the earliest forms of fine pore diffusers used for oxygen transfer in activated sludge treatment. They have been successfully used for over 60 years in the Jones Island West Plant of the Milwaukee Metropolitan Sewerage District and, since initia...

  18. Operative Versus Nonoperative Treatment of Jones Fractures: A Decision Analysis Model.

    PubMed

    Bishop, Julius A; Braun, Hillary J; Hunt, Kenneth J

    2016-01-01

    Optimal management of metadiaphyseal fifth metatarsal fractures (Jones fractures) remains controversial. Decision analysis can optimize clinical decision-making based on available evidence and patient preferences. We conducted a study to establish the determinants of decision-making and to determine the optimal treatment strategy for Jones fractures using a decision analysis model. Probabilities for potential outcomes of operative and nonoperative treatment of Jones fractures were determined from a review of the literature. Patient preferences for outcomes were obtained by questionnaire completed by 32 healthy adults with no history of foot fracture. Derived values were used in the model as a measure of utility. A decision tree was constructed, and fold-back and sensitivity analyses were performed to determine optimal treatment. Nonoperative treatment was associated with a value of 7.74, and operative treatment with an intramedullary screw was associated with a value of 7.88 given the outcome probabilities and utilities studied, making operative treatment the optimal strategy. When parameters were varied, nonoperative treatment was favored when the likelihood of healing with nonoperative treatment rose above 82% and when the probability of healing after surgery fell below 92%. In this decision analysis model, operative fixation is the preferred management strategy for Jones fractures. PMID:26991586

  19. 77 FR 59899 - Proposed Information Collection; Comment Request; Coastal Zone Management Act Walter B. Jones and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-01

    ... Zone Management Act Walter B. Jones and NOAA Excellence Awards AGENCY: National Oceanic and Atmospheric... of the Coastal Zone Management Act (CZMA) authorized an awards program to ``implement a program to promote excellence in coastal zone management by identifying and acknowledging outstanding...

  20. Enhancing Undergraduates' Capabilities through Team-Based Competitions: The Edward Jones Challenge

    ERIC Educational Resources Information Center

    Umble, Elisabeth J.; Umble, Michael; Artz, Kendall

    2008-01-01

    The Edward Jones Company recently initiated financial sponsorship of team-based competitions in six undergraduate business core classes at Baylor University. The challenges were chosen to take place in an introductory freshman business class, Managerial Accounting, Principles of Marketing, Corporate Finance, Operations Management, and Strategic…

  1. Evaluation of anxiolytic activity of compound Valeriana jatamansi Jones in mice

    PubMed Central

    2012-01-01

    Background Compound Valeriana jatamansi Jones is a formula for treating anxiety-related diseases in the clinic, which is composed of Valeriana jatamansi Rhizoma et Radix, Ziziphi Spinosae Semen, Albiziae Cortex and Junci Medulla. The purpose of this study was to explore the anxiolytic properties of this compound in mice. Methods Male ICR mice were treated with compound Valerianae Jatamansi Jones (1.2 g/kg, 2.4 g/kg, 4.8 g/kg), saline, diazepam (2 mg/kg) orally for 10 days and then exposed to elevated maze-plus (EPM) and light–dark box (LDB). The effects of the compound on spontaneous activity were evaluated by locomotor activity test. We further investigated the mechanism of action underlying the anxiolytic-like effect of compound by pre-treating animals with antagonists of benzodiazepine (flumazenil, 3mg/kg) prior to evaluation using EPM and LDB. Results Compound Valerianae Jatamansi Jones (2.4, 4.8 g/kg, p.o.) significantly increased entries (P<0.05) into and time spent (P<0.05) on the open arms of the EPM, and number of transitions (P<0.05) and time spent (P<0.05) in the light compartment of the LDB. However, the anxiolytic-like effects of compound were significantly reduced by pre-treatment with flumazenil (P>0.05). In addition, compound Valerianae Jatamansi Jones treatment didn’t affect the spontaneous activity in mice (P> 0.05). Conclusions The present study supports the hypothesis that compound Valeriana jatamansi Jones exert anxiolytic action but no sedative effects in mice and that this effect might be mediated by benzodiazepine receptors. PMID:23171285

  2. A Sad Journey down History: A Conversation with Judge Nathaniel Jones about Litigating "Milliken v. Bradley I" (1974), 40 Years Later

    ERIC Educational Resources Information Center

    Gooden, Mark A.; Green, Terrance L.

    2016-01-01

    The Honorable Judge Nathaniel Jones litigated the "Milliken v. Bradley I" case before the U.S. District Court and Supreme Court in 1971 and 1974. Nathaniel Jones was born May 12, 1926 in Youngstown, Ohio, and served as the general counsel for the NAACP from 1969-1979. In 1979, President Jimmy Carter nominated Nathaniel Jones to the U.S.…

  3. Optically buffered Jones-matrix-based multifunctional optical coherence tomography with polarization mode dispersion correction

    PubMed Central

    Hong, Young-Joo; Makita, Shuichi; Sugiyama, Satoshi; Yasuno, Yoshiaki

    2014-01-01

    Polarization mode dispersion (PMD) degrades the performance of Jones-matrix-based polarization-sensitive multifunctional optical coherence tomography (JM-OCT). The problem is specially acute for optically buffered JM-OCT, because the long fiber in the optical buffering module induces a large amount of PMD. This paper aims at presenting a method to correct the effect of PMD in JM-OCT. We first mathematically model the PMD in JM-OCT and then derive a method to correct the PMD. This method is a combination of simple hardware modification and subsequent software correction. The hardware modification is introduction of two polarizers which transform the PMD into global complex modulation of Jones matrix. Subsequently, the software correction demodulates the global modulation. The method is validated with an experimentally obtained point spread function with a mirror sample, as well as by in vivo measurement of a human retina. PMID:25657888

  4. Phase changes in selected Lennard-Jones X13-nYn clusters.

    PubMed

    Sabo, Dubravko; Predescu, Cristian; Doll, J D; Freeman, David L

    2004-07-01

    Detailed studies of the thermodynamic properties of selected binary Lennard-Jones clusters of the type X13-nYn (where n=1, 2, 3) are presented. The total energy, heat capacity, and first derivative of the heat capacity as a function of temperature are calculated by using the classical and path integral Monte Carlo methods combined with the parallel tempering technique. A modification in the phase change phenomena from the presence of impurity atoms and quantum effects is investigated. PMID:15260616

  5. Baby Boy Jones Interactive Case-Based Learning Activity: A Web-Delivered Teaching Strategy.

    PubMed

    Cleveland, Lisa M; Carmona, Elenice Valentim; Paper, Bruce; Solis, Linda; Taylor, Bonnie

    2015-01-01

    Faced with limited resources, nurse educators are challenged with transforming nursing education while preparing enough qualified nurses to meet future demand; therefore, innovative approaches to teaching are needed. In this article, we describe the development of an innovative teaching activity. Baby Boy Jones is a Web-delivered, case-based learning activity focused on neonatal infection. It was created using e-learning authoring software and delivered through a learning management system. PMID:25581435

  6. Modified Jeans instability in Lorentzian dusty self-gravitating plasmas with Lennard-Jones potential

    SciTech Connect

    Qian, Y. Z. Chen, H. Liu, S. Q.

    2014-11-15

    The Jeans instability in self-gravitating plasma with Kappa distributed dust grains is investigated basing on assumption that the mutual interaction among dust grains is governed by Lennard-Jones potential. It is shown that the presence of additional suprathermal particles has significant effects on the range of unstable modes and growth rate of Jeans instability. Compared with Maxwellian scenario, suprathermality stabilized the Jeans instability.

  7. How to quantify solid-liquid phase transition: Lennard-Jones system case study

    NASA Astrophysics Data System (ADS)

    Klumov, Boris A.; Klumov

    2013-12-01

    In this paper we analyzed different measures, characterizing the melting of Lennard-Jones solid, and associated with the properties of both the translational and the orientational local order. It has been shown that the most sensitive indicator of melting is the cumulant of the probability distribution function over w 6 bond-order parameter. The criterion of melting based on the indicator is proposed; the criterion can be used for any solids, having fcc/hcp types of symmetry.

  8. Elastic compliances and stiffnesses of the fcc Lennard-Jones solid

    NASA Astrophysics Data System (ADS)

    Quesnel, D. J.; Rimai, D. S.; Demejo, L. P.

    1993-09-01

    The isothermal elastic compliances, stiffnesses, and bulk moduli of a Lennard-Jones solid organized into an fcc crystal structure (256 atoms in 43 unit cells) have been calculated as a function of testing temperature (expressed as the mean kinetic energy per atom). Tests conducted in pure shear were used to determine S44 and C44=G100, where 100 refers to crystallographic directions. Tests imposing axial elongation with fixed lateral dimensions established C11 and C12. Axial deformation with zero lateral pressure (a tension test) was used to determine S11, S12, E100 and ν100. This provided an independent set of results for comparison with the dilatational stiffnesses C11 and C12. The bulk modulus K was obtained by independent triaxial tension testing. The stiffnesses, compliances, and moduli were determined by regression analysis and digital filtering applied to combinations of the stress-tensor and strain-tensor data stored at each iteration during the constant-rate deformation experiments. While the cubic fcc Lennard-Jones solid expectedly obeys the Cauchy relations for central-force potentials, it is not isotropic, allowing ν to take on values other than 1/4 as originally proposed by Poisson. The present calculations show ν100=0.347 for the fcc Lennard-Jones solid with a Young's modulus of E100=61.1ɛ/σ3, an initial (as indicated by superscript 0) shear modulus of G0100=57.2ɛ/σ3, and an initial bulk modulus of K0=71.2ɛ/σ3 at zero temperature. The moduli all decreased with increasing temperature. Reuss, Voigt, and Hashin and Shtrikman [J. Mech. Phys. Solids 10, 335 (1962)] bounds on the isotropic elastic properties of polycrystalline aggregates of Lennard-Jones material were also determined. Computed values of the moduli are in reasonable agreement with experimental results for solid argon and crystalline polyethylene.

  9. Bence Jones proteins: Powerful tool for fundamental study of protein chemistry and pathophysiology

    SciTech Connect

    Stevens, F.J.; Schiffer, M.; Solomon, A.

    1991-12-31

    Bence Jones proteins are typically found in patients with monoclonal plasma cell or related B-cell immunoproliferative disorders. Because of their monoclonal origin and resulting chemical homogeneity much of the fundamental information on immunoglobulin structure came initially from their analysis. Amino acid analyses of these components revealed an N-terminal variable (V) and C-terminal constant (C) domain as well as the existence within the V domain of hypervariable segments that account for the specificity and diversity of antibodies. Over the past three decades, the primary structures of hundreds of light chains (complete and partial), from human and other sources, have been determined, aligned, and archived. Bence Jones proteins and V{sub L} dimers were the crystallizable homogeneous proteins which provided much of the early three-dimensional conformational data that helped explain the structural basis of antibody function. Remarkably, a single Bence Jones protein in two solvent systems (low and high ionic strength) exhibited significant differences in the interactions of the two monomeric subunits comprising the dimer, resulting in substantial variation in the structure of the antigen combining site under the two solution conditions. This observation led to a prediction that heterogeneity of domain interactions may contribute to antibody-antigen interactions. Experimental support for this hypothesis has come from comparisons of the detailed structures of antibody-antigen complexes. The interactions at the interface of the V{sub L} dimer are a function of primary structure and solution conditions. Study of these interactions has led to new information on the relationship between protein structure and function and, as discussed below, can account for specific pathophysiological properties associated with Bence Jones proteins.

  10. Metastability, spectrum, and eigencurrents of the Lennard-Jones-38 network

    SciTech Connect

    Cameron, Maria K.

    2014-11-14

    We develop computational tools for spectral analysis of stochastic networks representing energy landscapes of atomic and molecular clusters. Physical meaning and some properties of eigenvalues, left and right eigenvectors, and eigencurrents are discussed. We propose an approach to compute a collection of eigenpairs and corresponding eigencurrents describing the most important relaxation processes taking place in the system on its way to the equilibrium. It is suitable for large and complex stochastic networks where pairwise transition rates, given by the Arrhenius law, vary by orders of magnitude. The proposed methodology is applied to the network representing the Lennard-Jones-38 cluster created by Wales's group. Its energy landscape has a double funnel structure with a deep and narrow face-centered cubic funnel and a shallower and wider icosahedral funnel. However, the complete spectrum of the generator matrix of the Lennard-Jones-38 network has no appreciable spectral gap separating the eigenvalue corresponding to the escape from the icosahedral funnel. We provide a detailed description of the escape process from the icosahedral funnel using the eigencurrent and demonstrate a superexponential growth of the corresponding eigenvalue. The proposed spectral approach is compared to the methodology of the Transition Path Theory. Finally, we discuss whether the Lennard-Jones-38 cluster is metastable from the points of view of a mathematician and a chemical physicist, and make a connection with experimental works.

  11. Connection of Jones and Mueller Tensors in Second Harmonic Generation and Multi-Photon Fluorescence Measurements.

    PubMed

    Simpson, Garth J

    2016-04-01

    Despite the rapidly growing use of second harmonic generation (SHG) and two-photon excited fluorescence (TPEF) microscopy, opportunities for relating polarization-dependent measurements back to local structure and molecular orientation are often confounded by losses in polarization purity. In this work, connections linking Mueller tensor and Jones tensor descriptions of polarization-dependent SHG and TPEF are shown to substantially simplify partially depolarized microscopy measurements. These connections were facilitated by the derivation of several new tensor identity relations, based on generalization of established transformations of matrices and vectors. Methods are described for integrating local-frame symmetry and azimuthal rotation angle for simplifying the Mueller tensor. Through simple expressions bridging the Mueller and Jones formalisms, mathematical models for partial depolarization can greatly simplify interpretation of SHG and TPEF measurements to reconstruct the more general Mueller tensors using the much more concise Jones descriptions for the purely polarized components. Integrating the Mueller architecture allows polarization-dependent SHG and TPEF measurements to be connected back to a relatively small set of free parameters related to local structure and orientation. PMID:26918624

  12. Metastability, spectrum, and eigencurrents of the Lennard-Jones-38 network.

    PubMed

    Cameron, Maria K

    2014-11-14

    We develop computational tools for spectral analysis of stochastic networks representing energy landscapes of atomic and molecular clusters. Physical meaning and some properties of eigenvalues, left and right eigenvectors, and eigencurrents are discussed. We propose an approach to compute a collection of eigenpairs and corresponding eigencurrents describing the most important relaxation processes taking place in the system on its way to the equilibrium. It is suitable for large and complex stochastic networks where pairwise transition rates, given by the Arrhenius law, vary by orders of magnitude. The proposed methodology is applied to the network representing the Lennard-Jones-38 cluster created by Wales's group. Its energy landscape has a double funnel structure with a deep and narrow face-centered cubic funnel and a shallower and wider icosahedral funnel. However, the complete spectrum of the generator matrix of the Lennard-Jones-38 network has no appreciable spectral gap separating the eigenvalue corresponding to the escape from the icosahedral funnel. We provide a detailed description of the escape process from the icosahedral funnel using the eigencurrent and demonstrate a superexponential growth of the corresponding eigenvalue. The proposed spectral approach is compared to the methodology of the Transition Path Theory. Finally, we discuss whether the Lennard-Jones-38 cluster is metastable from the points of view of a mathematician and a chemical physicist, and make a connection with experimental works. PMID:25399138

  13. Scaling of the dynamics of flexible Lennard-Jones chains: Effects of harmonic bonds

    NASA Astrophysics Data System (ADS)

    Veldhorst, Arno A.; Dyre, Jeppe C.; Schrøder, Thomas B.

    2015-11-01

    The previous paper [A. A. Veldhorst et al., J. Chem. Phys. 141, 054904 (2014)] demonstrated that the isomorph theory explains the scaling properties of a liquid of flexible chains consisting of ten Lennard-Jones particles connected by rigid bonds. We here investigate the same model with harmonic bonds. The introduction of harmonic bonds almost completely destroys the correlations in the equilibrium fluctuations of the potential energy and the virial. According to the isomorph theory, if these correlations are strong a system has isomorphs, curves in the phase diagram along which structure, dynamics, and the excess entropy are invariant. The Lennard-Jones chain liquid with harmonic bonds does have curves in the phase diagram along which the structure and dynamics are invariant. The excess entropy is not invariant on these curves, which we refer to as "pseudoisomorphs." In particular, this means that Rosenfeld's excess-entropy scaling (the dynamics being a function of excess entropy only) does not apply for the Lennard-Jones chain with harmonic bonds.

  14. Crystallization of a human Bence Jones protein in microgravity using vapor diffusion in capillaries

    NASA Astrophysics Data System (ADS)

    Alvarado, U. R.; DeWitt, C. R.; Shultz, B. B.; Ramsland, P. A.; Edmundson, A. B.

    2001-03-01

    A simple evaporative method in sealed capillaries was used to produce X-ray diffraction quality crystals of a monoclonal human Bence-Jones protein (Sea) in microgravity and at unit gravity. The λ isotypic Bence-Jones protein was purified from the urine of a multiple myeloma patient using ammonium sulfate precipitation, dialysis and cation exchange, followed by gel filtration. Crystals were produced in glass capillaries where water evaporated from the protein solution was absorbed by one or two suitable absorbents. A crystal grown during the 9-day Space Shuttle STS-95 flight measured 8×1.6×1 mm. It was subjected to X-ray diffraction and was found to be orthorhombic ( P2 12 12 1), with unit-cell dimensions of 48.9, 85.2 and 114.0 Å. X-ray data were collected at room temperature and were 98.3% complete to 2.3 Å resolution. Crystals of the same Bence-Jones protein measuring 1.2-2 mm in length were grown in ground-based controls using a high evaporation rate for the first 12 h, followed by a slower evaporation rate for the remainder of the 19-day growth period.

  15. Advanced multi-contrast Jones matrix optical coherence tomography for Doppler and polarization sensitive imaging.

    PubMed

    Ju, Myeong Jin; Hong, Young-Joo; Makita, Shuichi; Lim, Yiheng; Kurokawa, Kazuhiro; Duan, Lian; Miura, Masahiro; Tang, Shuo; Yasuno, Yoshiaki

    2013-08-12

    An advanced version of Jones matrix optical coherence tomography (JMT) is demonstrated for Doppler and polarization sensitive imaging of the posterior eye. JMT is capable of providing localized flow tomography by Doppler detection and investigating the birefringence property of tissue through a three-dimensional (3-D) Jones matrix measurement. Owing to an incident polarization multiplexing scheme based on passive optical components, this system is stable, safe in a clinical environment, and cost effective. Since the properties of this version of JMT provide intrinsic compensation for system imperfection, the system is easy to calibrate. Compared with the previous version of JMT, this advanced JMT achieves a sufficiently long depth measurement range for clinical cases of posterior eye disease. Furthermore, a fine spectral shift compensation method based on the cross-correlation of calibration signals was devised for stabilizing the phase of OCT, which enables a high sensitivity Doppler OCT measurement. In addition, a new theory of JMT which integrates the Jones matrix measurement, Doppler measurement, and scattering measurement is presented. This theory enables a sensitivity-enhanced scattering OCT and high-sensitivity Doppler OCT. These new features enable the application of this system to clinical cases. A healthy subject and a geographic atrophy patient were measured in vivo, and simultaneous imaging of choroidal vasculature and birefringence structures are demonstrated. PMID:23938857

  16. LCD panel characterization by measuring full Jones matrix of individual pixels using polarization-sensitive digital holographic microscopy.

    PubMed

    Park, Jongchan; Yu, Hyeonseung; Park, Jung-Hoon; Park, YongKeun

    2014-10-01

    We present measurements of the full Jones matrix of individual pixels in a liquid-crystal display (LCD) panel. Employing a polarization-sensitive digital holographic microscopy based on Mach-Zehnder interferometry, the complex amplitudes of the light passing through individual LCD pixels are precisely measured with respect to orthogonal bases of polarization states, from which the full Jones matrix components of individual pixels are obtained. We also measure the changes in the Jones matrix of individual LCD pixels with respect to an applied bias. In addition, the complex optical responses of a LCD panel with respect to arbitrary polarization states of incident light were characterized from the measured Jones matrix. PMID:25322005

  17. Constraints on Jones transmission matrices from time-reversal invariance and discrete spatial symmetries

    NASA Astrophysics Data System (ADS)

    Armitage, N. P.

    2014-07-01

    Optical spectroscopies are most often used to probe dynamical correlations in materials, but they are also a probe of symmetry. Polarization anisotropies are of course sensitive to structural anisotropies, but have been much less used as a probe of more exotic symmetry breakings in ordered states. In this paper, a Jones transfer matrix formalism is discussed to infer the existence of exotic broken symmetry states of matter from their electrodynamic response for a full complement of possible broken symmetries including reflection, rotation, rotation reflection, inversion, and time reversal. A specific condition to distinguish the case of macroscopic time-reversal symmetry breaking is particularly important as in a dynamical experiment like optics, one must distinguish reciprocity from time-reversal symmetry as dissipation violates strict time-reversal symmetry of an experiment. Different forms of reciprocity can be distinguished, but only one is a sufficient (but not necessary) condition for macroscopic time-reversal symmetry breaking. I show the constraints that a Jones matrix develops under the presence or absence of such symmetries. These constraints typically appear in the form of an algebra relating matrix elements or overall constraints (transposition, unitarity, hermiticity, normality, etc.) on the form of the Jones matrix. I work out a number of examples including the trivial case of a ferromagnet and the less trivial cases of magnetoelectrics and vector and scalar spin "chiral" states. I show that the formalism can be used to demonstrate that Kerr rotation must be absent in time-reversal symmetric chiral materials. The formalism here is discussed with an eye towards its use in time-domain terahetrz spectroscopy in transmission, but with small modifications it is more generally applicable.

  18. Evaluation of the American Heart Association 2015 revised Jones criteria versus existing guidelines

    PubMed Central

    Kumar, Dinesh; Bhutia, Euden; Kumar, Pradeep; Shankar, Binoy; Juneja, Atul; Chandelia, Sudha

    2016-01-01

    Objectives To compare the diagnostic yield of acute rheumatic fever (ARF) by the American Heart Association/ American College of Cardiology (AHA/ACC) 2015 revised Jones criteria with the WHO 2004 and Australian guidelines 2012. Methods Retrospective observational study in 93 cases of suspected ARF admitted to the Division of Paediatric Cardiology between January 2012 and December 2014. WHO 2004, Australian guidelines and AHA/ACC 2015 Jones criteria were applied to assess definite and probable ARF. Results Of the 93 cases, 50 were diagnosed as the first episode of ARF and 43 as a recurrence of the condition. Subclinical carditis was a predominant presentation (38%) in the first episode group (p<0.01) whereas in the recurrence group carditis (88%) was the main presentation (p<0.01). Among the joint manifestations, the majority of patients in both the first episode group and the recurrence group presented with arthralgia. Of all the patients with suspected ARF (50), 34% of cases did not fulfil the standard Jones criteria 2004; however, 86% qualified as having ARF on applying the Australian and AHA/ACC 2015 criteria. Surprisingly in the recurrence group only 67% of the patients fulfilled AHA/ACC 2015 despite the modifications incorporated beyond WHO 2004; however, all the patients fulfilled the Australian guidelines either as definite (88.4%) or probable (11.6%). Inclusion of subclinical carditis, polyarthralgia and monoarthritis as major criteria influenced the diagnosis to definite ARF in 20%, 10% and 4% of patients, respectively. Conclusions The clinical manifestations of ARF, comprising subclinical carditis and arthralgia, are possibly milder in the Indian population; hence, inclusion of subclinical carditis, polyarthralgia and monoarthritis as major criteria in the newer guidelines has improved the diagnostic yield of ARF. In the absence of a gold standard for the diagnosis of ARF, it is not possible to comment on sensitivity and specificity. PMID:27326228

  19. Determination of iron: In the presence of chromium and titanium with the jones reductor

    USGS Publications Warehouse

    Grimaldi, F.S.; Stevens, R.E.; Carron, M.K.

    1943-01-01

    Sulfuric acid solutions of titanous and chromous sulfates, obtained by passage through the Jones reductor, are oxidized by aeration for from 5 to 10 minutes in the presence of a trace of copper sulfate as a catalyst. Ferrous sulfate is essentially unoxidized and is titrated with permanganate after aeration. Best results are obtained by using 0.0003 millimole of copper sulfate in about 300 ml. of solution. Larger quantities of copper sulfate lead to slightly low results when both chromium and titanium are present.

  20. How the Jones polynomial give rise to physical states of quantum general relativity

    SciTech Connect

    Bruegmann, B. ); Gambini, R. ); Pullin, J. )

    1993-01-01

    Solutions to both the diffeomorphism and the hamiltonian constraint of quantum gravity have been found in the loop representation, which is based on Ashtekar's new variables. While the diffeomorphism constraint is easily solved by considering loop functionals which are knot invariants, there remains the puzzle why several of the known knot invariants are also solutions to the hamiltonian constraint. We show how the Jones polynomial gives rise to an infinite set of solutions to all the constraints of quantum gravity thereby illuminating the structure of the space of solutions and suggesting the existence of a deep connection between quantum gravity and knot theory at a dynamical level.

  1. Ornithodoros peruvianus Kohls, Clifford & Jones (Ixodoidea: Argasidae) in Chile: a tentative diagnosis.

    PubMed

    Venzal, J; González-Acuña, Daniel; Mangold, A; Guglielmone, A

    2012-02-01

    Three argasid tick larvae were collected on April 2, 2010, from a common vampire bat, Desmodus rotundus, captured in the Parque Nacional Pan de Azúcar (26°09' S, 70°41' W), Region of Atacama, Chile. The larvae were diagnosed as Ornithodoros, and further comparative analysis showed them to be Ornithodoros peruvianus Kohls, Clifford & Jones or a species close to it. Phylogenetic analysis based on 16S mitochondrial rRNA gene sequences of Ornithodoros species plus four Argas species was carried out to clarify the taxonomic position of the larvae. This is the first finding of ticks parasitizing D. rotundus in Chile. PMID:23950013

  2. A comparison of molecular dynamics and diffuse interface model predictions of Lennard-Jones fluid evaporation

    SciTech Connect

    Barbante, Paolo; Frezzotti, Aldo; Gibelli, Livio

    2014-12-09

    The unsteady evaporation of a thin planar liquid film is studied by molecular dynamics simulations of Lennard-Jones fluid. The obtained results are compared with the predictions of a diffuse interface model in which capillary Korteweg contributions are added to hydrodynamic equations, in order to obtain a unified description of the liquid bulk, liquid-vapor interface and vapor region. Particular care has been taken in constructing a diffuse interface model matching the thermodynamic and transport properties of the Lennard-Jones fluid. The comparison of diffuse interface model and molecular dynamics results shows that, although good agreement is obtained in equilibrium conditions, remarkable deviations of diffuse interface model predictions from the reference molecular dynamics results are observed in the simulation of liquid film evaporation. It is also observed that molecular dynamics results are in good agreement with preliminary results obtained from a composite model which describes the liquid film by a standard hydrodynamic model and the vapor by the Boltzmann equation. The two mathematical model models are connected by kinetic boundary conditions assuming unit evaporation coefficient.

  3. Birefringence imaging of posterior eye by multi-functional Jones matrix optical coherence tomography.

    PubMed

    Sugiyama, Satoshi; Hong, Young-Joo; Kasaragod, Deepa; Makita, Shuichi; Uematsu, Sato; Ikuno, Yasushi; Miura, Masahiro; Yasuno, Yoshiaki

    2015-12-01

    A clinical grade prototype of posterior multifunctional Jones matrix optical coherence tomography (JM-OCT) is presented. This JM-OCT visualized depth-localized birefringence in addition to conventional cumulative phase retardation imaging through local Jones matrix analysis. In addition, it simultaneously provides a sensitivity enhanced scattering OCT, a quantitative polarization uniformity contrast, and OCT-based angiography. The probe beam is at 1-μm wavelength band. The measurement speed and the depth-resolution were 100,000 A-lines/s, and 6.6 μm in tissue, respectively. Normal and pathologic eyes are examined and several clinical features are revealed, which includes high birefringence in the choroid and lamina cribrosa, and birefringent layered structure of the sclera. The theoretical details of the depth-localized birefringence imaging and conventional phase retardation imaging are formulated. This formulation indicates that the birefringence imaging correctly measures a depth-localized single-trip phase retardation of a tissue, while the conventional phase retardation can provide correct single-trip phase retardation only for some specific types of samples. PMID:26713208

  4. Function after correction of a clawed great toe by a modified Robert Jones transfer.

    PubMed

    Breusch, S J; Wenz, W; Döderlein, L

    2000-03-01

    We carried out a cross-sectional study in 51 patients (81 feet) with a clawed hallux in association with a cavus foot after a modified Robert Jones tendon transfer. The mean follow-up was 42 months (9 to 88). In all feet, concomitant procedures had been undertaken, such as extension osteotomy of the first metatarsal and transfer of the tendon of the peroneus longus to peroneus brevis, to correct the underlying foot deformity. All patients were evaluated clinically and radiologically. The overall rate of patient satisfaction was 86%. The deformity of the hallux was corrected in 80 feet. Catching of the big toe when walking barefoot, transfer lesions and metatarsalgia, hallux flexus, hallux limitus and asymptomatic nonunion of the interphalangeal joint were the most frequent complications. Hallux limitus was more likely when elevation of the first ray occurred (p = 0.012). Additional transfer of the tendon of peroneus longus to peroneus brevis was a significant risk factor for elevation of the first metatarsal (p < 0.0001). The deforming force of extensor hallucis longus is effectively eliminated by the Jones transfer, but the mechanics of the first metatarsophalangeal joint are altered. The muscle balance and stability of the entire first ray should be taken into consideration in the management of clawed hallux. PMID:10755436

  5. Solubility Limits in Lennard-Jones Mixtures: Effects of Disparate Molecule Geometries.

    PubMed

    Dyer, Kippi M; Perkyns, John S; Pettitt, B Montgomery

    2015-07-23

    In order to better understand general effects of the size and energy disparities between macromolecules and solvent molecules in solution, especially for macromolecular constructs self-assembled from smaller molecules, we use the first- and second-order exact bridge diagram extensions of the HNC integral equation theory to investigate single-component, binary, ternary, and quaternary mixtures of Lennard-Jones fluids. For pure fluids, we find that the HNCH3 bridge function integral equation (i.e., exact to third order in density) is necessary to quantitatively predict the pure gas and pure liquid sides of the coexistence region of the phase diagram of the Lennard-Jones fluid. For the mixtures, we find that the HNCH2 bridge function integral equation is sufficient to qualitatively predict solubility in the binary, ternary, and quaternary mixtures, up to the nominal solubility limit. The results, as limiting cases, should be useful to several problems, including accurate phase diagram predictions for complex mixtures, design of self-assembling nanostructures via solvent controls, and the solvent contributions to the conformational behavior of macromolecules in complex fluids. PMID:25621892

  6. The potential energy landscape for crystallisation of a Lennard-Jones fluid

    NASA Astrophysics Data System (ADS)

    de Souza, Vanessa K.; Wales, David J.

    2016-07-01

    Crystallisation pathways are explored by direct analysis of the potential energy landscape for a system of Lennard-Jones particles with periodic boundary conditions. A database of minima and transition states linking liquid and crystalline states is constructed using discrete path sampling and the entire potential energy landscape from liquid to crystal is visualised. We demonstrate that there is a strong negative correlation between the number of atoms in the largest crystalline cluster and the potential energy. In common with previous results we find a strong bias towards the growth of FCC rather than HCP clusters, despite a very small potential energy difference. We characterise three types of perfect crystals with very similar energies: pure FCC, pure HCP, and combinations of FCC and HCP layers. There are also many slightly defective crystalline structures. The effect of the simulation box is analysed for a supercell containing 864 atoms. There are low barriers between some of the different crystalline structures via pathways involving sliding layers, and many different defective structures with FCC layers stacked at an angle to the periodic box. Finally, we compare a binary Lennard-Jones system and visualise the potential energy landscape from supercooled liquid to crystal.

  7. Solubility Limits in Lennard-Jones Mixtures: Effects of Disparate Molecule Geometries

    PubMed Central

    Dyer, Kippi M.; Perkyns, John S.; Pettitt, B. Montgomery

    2016-01-01

    In order to better understand general effects of the size and energy disparities between macromolecules and solvent molecules in solution, especially for macromolecular constructs self-assembled from smaller molecules, we use the first- and second-order exact bridge diagram extensions of the HNC integral equation theory to investigate single-component, binary, ternary, and quaternary mixtures of Lennard-Jones fluids. For pure fluids, we find that the HNCH3 bridge function integral equation (i.e., exact to third order in density) is necessary to quantitatively predict the pure gas and pure liquid sides of the coexistence region of the phase diagram of the Lennard-Jones fluid. For the mixtures, we find that the HNCH2 bridge function integral equation is sufficient to qualitatively predict solubility in the binary, ternary, and quaternary mixtures, up to the nominal solubility limit. The results, as limiting cases, should be useful to several problems, including accurate phase diagram predictions for complex mixtures, design of self-assembling nanostructures via solvent controls, and the solvent contributions to the conformational behavior of macromolecules in complex fluids. PMID:25621892

  8. Birefringence imaging of posterior eye by multi-functional Jones matrix optical coherence tomography

    PubMed Central

    Sugiyama, Satoshi; Hong, Young-Joo; Kasaragod, Deepa; Makita, Shuichi; Uematsu, Sato; Ikuno, Yasushi; Miura, Masahiro; Yasuno, Yoshiaki

    2015-01-01

    A clinical grade prototype of posterior multifunctional Jones matrix optical coherence tomography (JM-OCT) is presented. This JM-OCT visualized depth-localized birefringence in addition to conventional cumulative phase retardation imaging through local Jones matrix analysis. In addition, it simultaneously provides a sensitivity enhanced scattering OCT, a quantitative polarization uniformity contrast, and OCT-based angiography. The probe beam is at 1-μm wavelength band. The measurement speed and the depth-resolution were 100,000 A-lines/s, and 6.6 μm in tissue, respectively. Normal and pathologic eyes are examined and several clinical features are revealed, which includes high birefringence in the choroid and lamina cribrosa, and birefringent layered structure of the sclera. The theoretical details of the depth-localized birefringence imaging and conventional phase retardation imaging are formulated. This formulation indicates that the birefringence imaging correctly measures a depth-localized single-trip phase retardation of a tissue, while the conventional phase retardation can provide correct single-trip phase retardation only for some specific types of samples. PMID:26713208

  9. The fish and fisheries of Jones Bank and the wider Celtic Sea

    NASA Astrophysics Data System (ADS)

    Martinez, I.; Ellis, J. R.; Scott, B.; Tidd, A.

    2013-10-01

    The Celtic Sea is a diverse fishing ground that supports important commercial fisheries for a range of demersal fish, large and small-bodied pelagic fish and a variety of cephalopods and other shellfish. A regional overview of the main commercial fish stocks of the Celtic Sea and of the fish that occur in the vicinity of Jones Bank are provided through analyses of landings data from English and Welsh vessels, and from scientific trawl surveys. Dedicated smaller scale sampling via trawl surveys combined with baited cameras on and around the Jones Bank were also analysed to investigate the importance of sandbank habitats with attention paid to the differences in the species occurring on the top of the bank in comparison to adjacent off-bank habitats. Official landing statistics for UK (English and Welsh) vessels indicated that the predominant commercial demersal species in ICES Divisions VIIg,h (in terms of quantities landed) were anglerfish, megrim, pollack and skates (Rajidae). There were, however, regional differences in the distribution of fish and fisheries, and the area surrounding Jones Bank (ICES Rectangles 28E1 and 28E2) supports fisheries for megrim, anglerfish, skates, hake, ling and turbot, with otter trawl, gillnet and beam trawl the main gears used. Recent survey data collected with GOV (Grande Ouverture Verticale) trawl from the Celtic Sea (ICES Divisions VIIe-h, 2007-2010) were used to highlight the broad scale distribution of the main fish assemblages in the Celtic Sea. Analyses of the fish and cephalopod catches from these surveys indicated that there were four broad assemblages in the area, including (i) a region around the Cornwall (which will also be partly influenced by the necessity to use rockhopper ground gear on these rough grounds), (ii) the shallower regions of the north-western Celtic Sea (including parts of the Bristol Channel), (iii) the deeper parts of the outer shelf and (iv) the central Celtic Sea. These data also provided

  10. The Lion and the Lady Revisited: Another Look at the Firing of Mary L. Jones as Los Angeles Public Librarian in 1905.

    ERIC Educational Resources Information Center

    Wiegand, Wayne A.

    1983-01-01

    Recounts events that led to the firing of Mary L. Jones, Director of Los Angeles Public Library (1905) and caught in public crossfire such figures as the mayor, city council, library board of directors, Charles Lummis (Jones's replacement), Susan B. Anthony, Anna Shaw, Herbert Putnam, and Melvil Dewey. (29 references) (EJS)

  11. Modelling of disjoining pressure for Lennard-Jones free thin films

    NASA Astrophysics Data System (ADS)

    Peng, Tiefeng; Gao, Xuechao; Li, Qibin; Yang, Siyuan; Tang, Qizhong

    2016-03-01

    Development of disjoining pressure was performed to study the symmetric, Lennard-Jones (LJ) free thin films using molecular modelling. A methodology rooted from film thermodynamics was established to derive the disjoining pressure isotherm (Π ‑ h), which is based on the surface tension at varied film thicknesses and can be viewed as a post-processing technique. The results showed that the disjoining pressure of LJ fluid is purely attractive. Compared with the complicated method reported previously, this methodology is demonstrated to be more convenient and readily applicable for other liquid films (e.g. water, aqueous thin films containing electrolyte or surfactants), meanwhile it can be applied at both low and high temperatures.

  12. Properties of the Lennard-Jones dimeric fluid in two dimensions: An integral equation study

    SciTech Connect

    Urbic, Tomaz; Dias, Cristiano L.

    2014-03-07

    The thermodynamic and structural properties of the planar soft-sites dumbbell fluid are examined by Monte Carlo simulations and integral equation theory. The dimers are built of two Lennard-Jones segments. Site-site integral equation theory in two dimensions is used to calculate the site-site radial distribution functions for a range of elongations and densities and the results are compared with Monte Carlo simulations. The critical parameters for selected types of dimers were also estimated. We analyze the influence of the bond length on critical point as well as tested correctness of site-site integral equation theory with different closures. The integral equations can be used to predict the phase diagram of dimers whose molecular parameters are known.

  13. Five-dimensional analysis of multi-contrast Jones matrix tomography of posterior eye

    NASA Astrophysics Data System (ADS)

    Bhaskar, Udaya; Hong, Young-Joo; Miura, Masahiro; Yasuno, Yoshiaki

    2014-02-01

    Pixel clustering algorithm tailored to multi-contrast Jones matrix based optical coherence tomography (MC-JMT) is demonstrated. This algorithm clusters multiple pixels of MC-JMT in a five-dimensional (5-D) feature space which comprises dimensions of lateral space, axial space, logarithmic scattering OCT intensity, squared power of Doppler shift and degree of polarization uniformity. This 5-D clustering provides clusters of pixels, so called as superpixels. The superpixels are utilized as local regions for pixels averaging. The averaging decreases the noise in the measurement as preserving structural details of the sample. A simple decision-tree algorithm is applied to classified superpixels into some tissue types. This classification process successfully segments tissues of a human posterior eye.

  14. L to R: STS-98 Mission Specialist Thomas Jones, Pilot Mark Polansky, and Commander Kenneth Cockrell

    NASA Technical Reports Server (NTRS)

    2001-01-01

    L to R: STS-98 Mission Specialist Thomas Jones, Pilot Mark Polansky, and Commander Kenneth Cockrell greet STS-92 Commander Brian Duffy, Dryden Center Director Kevin Petersen, and AFFTC Commander Major General Richard Reynolds after landing on the runway at Edwards Air Force Base, California, where NASA's Dryden Flight Research Center is located. Space Shuttle Atlantis landed at 12:33 p.m. February 20, 2001, on the runway at Edwards Air Force Base, California, where NASA's Dryden Flight Research Center is located. The mission, which began February 7, logged 5.3 million miles as the shuttle orbited earth while delivering the Destiny science laboratory to the International Space Station. Inclement weather conditions in Florida prompted the decision to land Atlantis at Edwards. The last time a space shuttle landed at Edwards was Oct. 24, 2000.

  15. On the establishment of thermal diffusion in binary Lennard-Jones liquids

    NASA Astrophysics Data System (ADS)

    Ferrario, M.; Bonella, S.; Ciccotti, G.

    2016-07-01

    The establishment of thermal diffusion in an Ar-Kr Lennard-Jones mixture is investigated via dynamical non equilibrium molecular dynamics [G. Ciccotti, G. Jacucci, Phys. Rev. Lett. 35, 789 (1975)]. We observe, in particular, the evolution of the density and temperature fields of the system following the onset of the thermal gradient. In stationary conditions, we also compute the Soret coefficient of the mixture. This study confirms that dynamical non equilibrium molecular dynamics is an effective tool to gather information on transient phenomena, even though the full evolution of the mass and energy fluxes associated to the temperature and density fields requires, in this case, a more substantial numerical effort than the one employed here.

  16. Phase diagram and universality of the Lennard-Jones gas-liquid system.

    PubMed

    Watanabe, Hiroshi; Ito, Nobuyasu; Hu, Chin-Kun

    2012-05-28

    The gas-liquid phase transition of the three-dimensional Lennard-Jones particles system is studied by molecular dynamics simulations. The gas and liquid densities in the coexisting state are determined with high accuracy. The critical point is determined by the block density analysis of the Binder parameter with the aid of the law of rectilinear diameter. From the critical behavior of the gas-liquid coexisting density, the critical exponent of the order parameter is estimated to be β = 0.3285(7). Surface tension is estimated from interface broadening behavior due to capillary waves. From the critical behavior of the surface tension, the critical exponent of the correlation length is estimated to be ν = 0.63(4). The obtained values of β and ν are consistent with those of the Ising universality class. PMID:22667535

  17. Blueschist metamorphism in the Yreka-Fort Jones area, Klamath Mountains, California

    USGS Publications Warehouse

    Hotz, Preston E.

    1973-01-01

    Blueschist is plentiful in the Yreka-Fort Jones area, eastern Klamath Mountains, adjacent to a belt of serpentinite that marks the boundary between two fundamental lithologic units, an eastern belt of early Paleozoic sedimentary and metamorphic rocks, and a western greenstone-chert assemblage of late Paleozoic and Triassic(?) age. The blueschists, which contain lawsonite and glaucophane or crossite, occur with phyllitic quartzite and siliceous phyllite of the Stuart Fork Formation, which is overthrust northwestward on the greenstone-chert terrane. The blueschist facies metamorphism probably was synchronous with Middle and Late Jurassic metamorphism of the Stuart Fork Formation. The blueschist-serpentinite terrane possibly marks the site of collision between the eastern Klamath plate and an oceanic western Paleozoic and Triassic plate.

  18. John Jones, M.D.: pioneer, patriot, and founder of American surgery.

    PubMed

    Griesemer, Adam D; Widmann, Warren D; Forde, Kenneth A; Hardy, Mark A

    2010-04-01

    John Jones was a pioneer of American Surgery. Born in Long Island, New York in 1729, he received his medical degree in France from the University of Rheims. He returned to the colonies and helped to establish the medical school that would later become Columbia University's College of Physicians and Surgeons where he was appointed the first Professor of Surgery in the New World. He used his position to assert that surgeons trained in America should be familiar with all facets of medicine and not be mere technicians. Before the outbreak of the American Revolution, he wrote a surgical field manual, which was the first medical text published in America. A believer in the principles of the American Revolution, he would go on to count Benjamin Franklin and George Washington as his patients. Despite achieving many firsts in American medicine, his influence on surgical training is his most enduring legacy. PMID:20012608

  19. Dynamics of vacancies in two-dimensional Lennard-Jones crystals

    NASA Astrophysics Data System (ADS)

    Yao, Zhenwei; Olvera de La Cruz, Monica

    2015-03-01

    Vacancies represent an important class of crystallographic defects, and their behaviors can be strongly coupled with relevant material properties. We report the rich dynamics of vacancies in two-dimensional Lennard-Jones crystals in several thermodynamic states. Specifically, we numerically observe significantly faster diffusion of the 2-point vacancy with two missing particles in comparison with other types of vacancies; it opens the possibility of doping 2-point vacancies into atomic materials to enhance atomic migration. In addition, the resulting dislocations in the healing of a long vacancy suggest the intimate connection between vacancies and topological defects that may provide an extra dimension in the engineering of defects in extensive crystalline materials for desired properties. We thank the financial support from the U.S. Department of Commerce, National Institute of Standards and Technology, the Office of the Director of Defense Research and Engineering (DDR&E) and the Air Force Office of Scientific Research.

  20. Pressure-energy correlations and thermodynamic scaling in viscous Lennard-Jones liquids

    NASA Astrophysics Data System (ADS)

    Coslovich, D.; Roland, C. M.

    2009-01-01

    We use molecular dynamics simulation results on viscous binary Lennard-Jones mixtures to examine the correlation between the potential energy and the virial. In accord with a recent proposal [U. R. Pedersen et al., Phys. Rev. Lett. 100, 015701 (2008)], the fluctuations in the two quantities are found to be strongly correlated, exhibiting a proportionality constant, Γ, numerically equal to one-third the slope of an inverse power law approximation to the intermolecular potential function. The correlation is stronger at higher densities, where interatomic separations are in the range where the inverse power law approximation is more accurate. These same liquids conform to thermodynamic scaling of their dynamics, with the scaling exponent equal to Γ. Thus, the properties of strong correlation between energy and pressure and thermodynamic scaling both reflect the ability of an inverse power law representation of the potential to capture interesting features of the dynamics of dense, highly viscous liquids.

  1. Cavitation and crystallization in a metastable Lennard-Jones liquid at negative pressures and low temperatures.

    PubMed

    Baidakov, Vladimir G; Bobrov, Konstantin S; Teterin, Aleksey S

    2011-08-01

    Molecular dynamics simulations have been used to investigate the kinetics of spontaneous cavitation and crystallization in a Lennard-Jones liquid at negative pressures in the temperature range where these processes compete with each other. The nucleation rate has been calculated in NVE and NpT ensembles by the method of mean lifetime and the transition interface sampling method with parallel path swapping. The data obtained have been used to determine in the framework of classical nucleation theory the value of the ratio of the solid-liquid and the liquid-void interfacial free energy for critical crystals and cavities and the values of their volumes at points where the cavitation rate of the liquid is equal to the rate of its crystallization. PMID:21823717

  2. Mesoscopic Hamiltonian for the fluctuations of adsorbed Lennard-Jones liquid films.

    PubMed

    Fernández, Eva M; Chacón, Enrique; MacDowell, Luis G; Tarazona, Pedro

    2015-06-01

    We use Monte Carlo simulations of a Lennard-Jones fluid adsorbed on a short-range planar wall substrate to study the fluctuations in the thickness of the wetting layer, and we get a quantitative and consistent characterization of their mesoscopic Hamiltonian, H[ξ]. We have observed important finite-size effects, which were hampering the analysis of previous results obtained with smaller systems. The results presented here support an appealing simple functional form for H[ξ], close but not exactly equal to the theoretical nonlocal proposal made on the basis a generic density-functional analysis by Parry and coworkers. We have analyzed systems under different wetting conditions, as a proof of principle for a method that provides a quantitative bridge between the molecular interactions and the phenomenology of wetting films at mesoscopic scales. PMID:26172722

  3. Molecular Dynamic Study of a Single Dislocation in a Two-Dimensional Lennard Jones System

    NASA Astrophysics Data System (ADS)

    Robles, Miguel; Mustonen, Ville; Kaski, Kimmo

    In this work the motion of a single dislocation in a two-dimensional triangular lattice is studied by using classical Molecular Dynamics method with the Lennard Jones inter-atomic potential. The dislocation motion is investigated with an interactive simulation program developed to track automatically the movement of lattice defects. Constant strain and constant strain-rate deformations were applied to the system. From constant strain simulations a curve of shear stress versus dislocation velocity is obtained, showing a nonlinear power law relation. An equation of motion for the dislocation is proposed and found to be applicable when the movement of dislocation follows a quasi-static process. Numerical simulations at different strain rates show an elastic-to-plastic transition that modifies the dynamics of the dislocation motion.

  4. Density-functional theory of elastic moduli: Hard-sphere and Lennard-Jones crystals

    NASA Astrophysics Data System (ADS)

    Jarić, Marko V.; Mohanty, Udayan

    1988-03-01

    We propose a density-functional method for calculating elastic moduli of crystalline solids. The method is based on the second-order Ramakrishnan-Yussouff (RY) expansion of the variational grand-canonical potential around a uniform liquid state. The densities of the strained and unstrained crystal are represented as sums of narrow Gaussians. We express the crystal moduli in terms of the liquid structure factor its first and second derivatives evaluated at the reciprocal-lattice points of the crystal. We evaluate the elastic moduli for fcc hard-sphere and Lennard-Jones crystals using the Percus-Yevick and computer-simulation liquid structure factors, respectively. An indirect comparison with available experimental and theoretical values shows that although our calculated moduli are accurate to an order of magnitude, higher-order terms in the RY expansion might be significant. We find important contributions from density equilibration within the strained unit cell.

  5. Computing Freidlin's Cycles for the Overdamped Langevin Dynamics. Application to the Lennard-Jones-38 Cluster

    NASA Astrophysics Data System (ADS)

    Cameron, M. K.

    2013-08-01

    The large time behavior of a stochastic system with infinitesimally small noise can be described in terms of Freidlin's cycles. We show that if the system is gradient and the potential satisfies certain non-restrictive conditions, the hierarchy of cycles has a structure of a full binary tree, and each cycle is exited via the lowest saddle adjacent to it. Exploiting this property, we propose an algorithm for computing the asymptotic zero-temperature path and building a hierarchy of Freidlin's cycles associated with the transition process between two given local equilibria. This algorithm is suitable for systems with a complex potential energy landscape with numerous minima. We apply it to find the asymptotic zero-temperature path and Freidlin's cycles involved into the transition process between the two lowest minima of the Lennard-Jones cluster of 38 atoms. D. Wales's stochastic network of minima and transition states of this cluster is used as an input.

  6. Dynamics of vacancies in two-dimensional Lennard-Jones crystals

    NASA Astrophysics Data System (ADS)

    Yao, Zhenwei; de la Cruz, Monica Olvera

    2014-12-01

    Vacancies represent an important class of crystallographic defects, and their behaviors can be strongly coupled with relevant material properties. In this work, we study the dynamics of generic n -point vacancies in two-dimensional Lennard-Jones crystals in several thermodynamic states. Simulations reveal the spectrum of distinct, size-dependent vacancy dynamics, including the nonmonotonously varying diffusive mobilities of one-, two- and three-point vacancies, and several healing routines of linear vacancies. Specifically, we numerically observe significantly faster diffusion of the two-point vacancy that can be attributed to its rotational degree of freedom. The high mobility of the two-point vacancies opens the possibility of doping two-point vacancies into atomic materials to enhance atomic migration. The rich physics of vacancies revealed in this study may have implications in the engineering of defects in extensive crystalline materials for desired properties.

  7. Clustering of Lennard-Jones particles in water: temperature and pressure effects.

    PubMed

    Ferrara, Gastón; McCarthy, Andrés N; Grigera, J Raúl

    2007-09-14

    While the hydrophobic effect is, for many systems, one of the most relevant interactions, it may be said that in the case of biological systems this effect becomes of determinant importance. Although the matter has been analyzed extensively, certain aspects are yet to be elucidated. Hence, the study on the behavior of the hydrophobic effect with temperature, and particularly with pressure deserves further investigation; model systems may help us in the task. We have analyzed the behavior of Lennard-Jones particles in water by means of molecular dynamics simulation under different conditions of size, concentration, temperature, and pressure. Following the formation of particle aggregates we can observe an increase of the hydrophobic effect with temperature and a strong weakening of the effect at high pressures. The results agree with the experimental evidence and show the ability of molecular dynamics simulation to account for the behavior of nonpolar substances under different conditions, provided that the intermolecular interactions used are adequate. PMID:17867756

  8. Properties of the Lennard-Jones dimeric fluid in two dimensions: An integral equation study

    PubMed Central

    Urbic, Tomaz; Dias, Cristiano L.

    2014-01-01

    The thermodynamic and structural properties of the planar soft-sites dumbbell fluid are examined by Monte Carlo simulations and integral equation theory. The dimers are built of two Lennard-Jones segments. Site-site integral equation theory in two dimensions is used to calculate the site-site radial distribution functions for a range of elongations and densities and the results are compared with Monte Carlo simulations. The critical parameters for selected types of dimers were also estimated. We analyze the influence of the bond length on critical point as well as tested correctness of site-site integral equation theory with different closures. The integral equations can be used to predict the phase diagram of dimers whose molecular parameters are known. PMID:24606372

  9. Interatomic correlations moments of atoms in the two-dimensional hexagonal lattice by using Morse and Lenard-Jones potentials

    NASA Astrophysics Data System (ADS)

    Rodrigues, Clóves G.

    2016-06-01

    In this work we investigate the interatomic correlation moments in two-dimensional model of a weakly anharmonic crystal (i.e., not very high temperatures) with hexagonal lattice, using the Correlative Method of Unsymmetrized Self-Consistent Field (CUSF). The numerical results are obtained (and compared) by using the Morse and Lenard-Jones potentials.

  10. Comment on Cross, Fine, Jones, and Walsh (2012): Good Therapeutic Services--Therapeutic Advocacy and Forensic Neutrality

    ERIC Educational Resources Information Center

    Connell, Mary

    2012-01-01

    Cross, Fine, Jones, and Walsh (2012) provided a thoughtful review and critique of a book chapter describing the interview process at Child Advocacy Centers. They observed some of the ways that concerns raised in that chapter are being addressed and described revised guidelines that further clarify issues. Ongoing research and examination of the…

  11. Limitations of the Motivational Intensity Model of Attentional Tuning: Reply to Harmon-Jones, Gable, and Price (2011)

    ERIC Educational Resources Information Center

    Friedman, Ronald S.; Forster, Jens

    2011-01-01

    In an integrative review, we concluded that implicit affective cues--rudimentary stimuli associated with the onset of arousing positive or negative emotional states and/or with appraisals that the environment is benign or threatening--automatically moderate the scope of attention (Friedman & Forster, 2010). In their comment, Harmon-Jones, Gable,…

  12. Statement of Facts for 1992 City-Wide Mock Trial Competitions. United States v. David Jones. MT-92.

    ERIC Educational Resources Information Center

    National Inst. for Citizen Education in the Law, Washington, DC.

    Prepared by the District of Columbia Street Law Project for its 21 annual city-wide mock trial competition, this instructional handout provides material for a mock rape trial. David Jones and Susan Williams, both students at Capital University, had dated on and off during the previous years and on the night of the incident had attended a party…

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

    ERIC Educational Resources Information Center

    Tomarken, Andrew J.; Zald, David H.

    2009-01-01

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

  14. Creating a Classroom of Inquiry at the University of California at Berkeley: The Harold E. Jones Child Study Center

    ERIC Educational Resources Information Center

    Scales, Barbara; Perry, Jane; Tracy, Rebecca

    2012-01-01

    Research Findings: Three former teaching colleagues at the University of California's Harold E. Jones Child Study Center discuss an interpretative approach to child observation and assessment and how this approach was developed (1970s-2005) within this lab school's early childhood education setting. With teaching practice shaped and driven by a…

  15. Epibenthic assemblages in the Celtic Sea and associated with the Jones Bank

    NASA Astrophysics Data System (ADS)

    Ellis, J. R.; Martinez, I.; Burt, G. J.; Scott, B. E.

    2013-10-01

    The epibenthic assemblages in the Celtic Sea are described from the catches from 2 m beam trawl surveys undertaken from 2000 to 2009. During this period 154 samples were collected. The most ubiquitous species in the study area were the natantid shrimps Processa spp. and Crangon allmanni, the hermit crabs Pagurus prideaux and Anapagurus laevis, sand star Astropecten irregularis and spotted dragonet Callionymus maculatus. Multivariate community analyses indicated that catches (numbers per tow) were distributed across six assemblages, two of which were predominant in the study area. Most catches were attributed to either a 'shelf edge assemblage', which was widespread in deeper waters (114-423 m water depth) or an 'outer shelf assemblage' that occurred across much of the Celtic Sea north of 49°N in waters 49-175 m deep. The dominant species along the edge of the continental shelf were the hormathid anemome Actinauge richardi, sea spider Pycnogonum littorale (which associated with A. richardi), Devonshire cup coral Caryophyllia smithii and the swimming crab Macropipus tuberculatus. The dominant species in the outer shelf assemblage included P. prideaux, C. allmanni, A. laevis and common starfish Asterias rubens. Stations closer to shore were relatively distinct and catches in this 'inner shelf assemblage' were composed primarily of an inshore fauna (e.g. Ophiura ophiura, C. allmanni and Liocarcinus holsatus). Stations in the southern part of the survey grid were also relatively distinct ('southern Celtic Sea assemblage'), and several large echinoderms (Porania pulvillus, Stichastrella rosea and Anseropoda placenta) dominated at these sites. Three of the deepest stations were also relatively distinct, as were a group of stations in the muddy habitat of the Celtic Deep and comparable grounds elsewhere in the region, where Nucula sulcata and Alpheus glaber were characteristic. Catches on the shallower parts of the Jones Bank (and on another bank in the region) were

  16. Excess entropy and crystallization in Stillinger-Weber and Lennard-Jones fluids.

    PubMed

    Dhabal, Debdas; Nguyen, Andrew Huy; Singh, Murari; Khatua, Prabir; Molinero, Valeria; Bandyopadhyay, Sanjoy; Chakravarty, Charusita

    2015-10-28

    Molecular dynamics simulations are used to contrast the supercooling and crystallization behaviour of monatomic liquids that exemplify the transition from simple to anomalous, tetrahedral liquids. As examples of simple fluids, we use the Lennard-Jones (LJ) liquid and a pair-dominated Stillinger-Weber liquid (SW16). As examples of tetrahedral, water-like fluids, we use the Stillinger-Weber model with variable tetrahedrality parameterized for germanium (SW20), silicon (SW21), and water (SW(23.15) or mW model). The thermodynamic response functions show clear qualitative differences between simple and water-like liquids. For simple liquids, the compressibility and the heat capacity remain small on isobaric cooling. The tetrahedral liquids in contrast show a very sharp rise in these two response functions as the lower limit of liquid-phase stability is reached. While the thermal expansivity decreases with temperature but never crosses zero in simple liquids, in all three tetrahedral liquids at the studied pressure, there is a temperature of maximum density below which thermal expansivity is negative. In contrast to the thermodynamic response functions, the excess entropy on isobaric cooling does not show qualitatively different features for simple and water-like liquids; however, the slope and curvature of the entropy-temperature plots reflect the heat capacity trends. Two trajectory-based computational estimation methods for the entropy and the heat capacity are compared for possible structural insights into supercooling, with the entropy obtained from thermodynamic integration. The two-phase thermodynamic estimator for the excess entropy proves to be fairly accurate in comparison to the excess entropy values obtained by thermodynamic integration, for all five Lennard-Jones and Stillinger-Weber liquids. The entropy estimator based on the multiparticle correlation expansion that accounts for both pair and triplet correlations, denoted by S(trip), is also studied. S

  17. Excess entropy and crystallization in Stillinger-Weber and Lennard-Jones fluids

    NASA Astrophysics Data System (ADS)

    Dhabal, Debdas; Nguyen, Andrew Huy; Singh, Murari; Khatua, Prabir; Molinero, Valeria; Bandyopadhyay, Sanjoy; Chakravarty, Charusita

    2015-10-01

    Molecular dynamics simulations are used to contrast the supercooling and crystallization behaviour of monatomic liquids that exemplify the transition from simple to anomalous, tetrahedral liquids. As examples of simple fluids, we use the Lennard-Jones (LJ) liquid and a pair-dominated Stillinger-Weber liquid (SW16). As examples of tetrahedral, water-like fluids, we use the Stillinger-Weber model with variable tetrahedrality parameterized for germanium (SW20), silicon (SW21), and water (SW23.15 or mW model). The thermodynamic response functions show clear qualitative differences between simple and water-like liquids. For simple liquids, the compressibility and the heat capacity remain small on isobaric cooling. The tetrahedral liquids in contrast show a very sharp rise in these two response functions as the lower limit of liquid-phase stability is reached. While the thermal expansivity decreases with temperature but never crosses zero in simple liquids, in all three tetrahedral liquids at the studied pressure, there is a temperature of maximum density below which thermal expansivity is negative. In contrast to the thermodynamic response functions, the excess entropy on isobaric cooling does not show qualitatively different features for simple and water-like liquids; however, the slope and curvature of the entropy-temperature plots reflect the heat capacity trends. Two trajectory-based computational estimation methods for the entropy and the heat capacity are compared for possible structural insights into supercooling, with the entropy obtained from thermodynamic integration. The two-phase thermodynamic estimator for the excess entropy proves to be fairly accurate in comparison to the excess entropy values obtained by thermodynamic integration, for all five Lennard-Jones and Stillinger-Weber liquids. The entropy estimator based on the multiparticle correlation expansion that accounts for both pair and triplet correlations, denoted by Strip, is also studied. Strip is a

  18. Excess entropy and crystallization in Stillinger-Weber and Lennard-Jones fluids

    SciTech Connect

    Dhabal, Debdas; Chakravarty, Charusita; Nguyen, Andrew Huy; Molinero, Valeria; Singh, Murari; Khatua, Prabir; Bandyopadhyay, Sanjoy

    2015-10-28

    Molecular dynamics simulations are used to contrast the supercooling and crystallization behaviour of monatomic liquids that exemplify the transition from simple to anomalous, tetrahedral liquids. As examples of simple fluids, we use the Lennard-Jones (LJ) liquid and a pair-dominated Stillinger-Weber liquid (SW{sub 16}). As examples of tetrahedral, water-like fluids, we use the Stillinger-Weber model with variable tetrahedrality parameterized for germanium (SW{sub 20}), silicon (SW{sub 21}), and water (SW{sub 23.15} or mW model). The thermodynamic response functions show clear qualitative differences between simple and water-like liquids. For simple liquids, the compressibility and the heat capacity remain small on isobaric cooling. The tetrahedral liquids in contrast show a very sharp rise in these two response functions as the lower limit of liquid-phase stability is reached. While the thermal expansivity decreases with temperature but never crosses zero in simple liquids, in all three tetrahedral liquids at the studied pressure, there is a temperature of maximum density below which thermal expansivity is negative. In contrast to the thermodynamic response functions, the excess entropy on isobaric cooling does not show qualitatively different features for simple and water-like liquids; however, the slope and curvature of the entropy-temperature plots reflect the heat capacity trends. Two trajectory-based computational estimation methods for the entropy and the heat capacity are compared for possible structural insights into supercooling, with the entropy obtained from thermodynamic integration. The two-phase thermodynamic estimator for the excess entropy proves to be fairly accurate in comparison to the excess entropy values obtained by thermodynamic integration, for all five Lennard-Jones and Stillinger-Weber liquids. The entropy estimator based on the multiparticle correlation expansion that accounts for both pair and triplet correlations, denoted by S{sub trip

  19. Enhancement of the droplet nucleation in a dense supersaturated Lennard-Jones vapor.

    PubMed

    Zhukhovitskii, D I

    2016-05-14

    The vapor-liquid nucleation in a dense Lennard-Jones system is studied analytically and numerically. A solution of the nucleation kinetic equations, which includes the elementary processes of condensation/evaporation involving the lightest clusters, is obtained, and the nucleation rate is calculated. Based on the equation of state for the cluster vapor, the pre-exponential factor is obtained. The latter diverges as a spinodal is reached, which results in the nucleation enhancement. The work of critical cluster formation is calculated using the previously developed two-parameter model (TPM) of small clusters. A simple expression for the nucleation rate is deduced and it is shown that the work of cluster formation is reduced for a dense vapor. This results in the nucleation enhancement as well. To verify the TPM, a simulation is performed that mimics a steady-state nucleation experiments in the thermal diffusion cloud chamber. The nucleating vapor with and without a carrier gas is simulated using two different thermostats for the monomers and clusters. The TPM proves to match the simulation results of this work and of other studies. PMID:27179494

  20. Phytoplankton and bacterial distribution and productivity on and around Jones Bank in the Celtic Sea

    NASA Astrophysics Data System (ADS)

    Davidson, Keith; Gilpin, Linda C.; Pete, Romain; Brennan, Debra; McNeill, Sharon; Moschonas, Grigorios; Sharples, Jonathon

    2013-10-01

    The abundance and productivity of phytoplankton and bacterioplankton in the region of Jones Bank (Celtic Sea) were assessed in relation to potential physical and chemical drivers of the marine microbial community during July 2008 on RRS James Cook cruise JC25. A major storm dominated the early part of the cruise; this influenced the microbial community with a decrease in diatom abundance being evident due to mixing of cells to sub euphotic zone depths. In the euphotic zone, phytoplankton was dominated by Phaeocystis cells which, with time, became constrained within a chlorophyll maximum that was located near the top of the nutricline. Multivariate statistical analyses found that temporal changes in diatom and dinoflagellate communities were significantly related to water temperature (diatoms) and nitrate concentration (dinoflagellates). Post storm, primary productivity was greatest in the Phaeocystis dominated 2-20 μm size fraction, but with no obvious topographically generated differences between on and off bank stations. Use of a mathematical model demonstrated the likely enhancement of productivity by the storm event, and also that this storm would have masked any topographic influence on productivity. The primary production:bacterial production ratio decreased significantly with time during the cruise, suggesting active competition by bacteria with phytoplankton for mineral nutrients. This was confirmed by a deck board enrichment experiment that demonstrated a rapid increase in bacterial productivity following supplementation of the euphotic zone microbial community with nutrient rich water collected below the mixed layer.

  1. Selected hydrogeologic and water-quality data from Jones Beach Island, Long Island, New York

    USGS Publications Warehouse

    Scorca, M.P.; Reilly, T.E.; Franke, O.L.

    1995-01-01

    A data-collection site was instrumented on Jones Beach Island, a barrier island south of Long Island, N.Y., to study local freshwater/ saltwater relations in the shallow ground-water system. A geologic test boring revealed about 88 feet of well-sorted glacial outwash sand above about 15 feet of Gardiners Clay, which directly overlies silty sand of the Magothy Formation. Tidal effects on water levels in Great South Bay, the upper glacial aquifer, and the Magothy aquifer were observed and quantified with a tidal gage in the bay and analog water-level recorders in the wells.Chloride concentrations in the upper Magothy aquifer were higher than expected--about 270 mg/L (milligrams per liter), and those in the upper glacial aquifer were 17,000 to 19,000 mg/L, about the same as in Great South Bay. Estimates of pressure and freshwater equivalent heads indicate that, at the data-collection site, freshwater is discharging upward from the Magothy aquifer into the salty upper glacial aquifer, but dilution by this freshwater is undetectable. The reason for the elevated chloride concentration in the Magothy aquifer cannot be determined from available hydrogeologic information.

  2. A momentum trading approach to technical analysis of Dow Jones industrials

    NASA Astrophysics Data System (ADS)

    Wang, Hui; Pandey, Ras B.

    2004-01-01

    A momentum trading approach is presented to examine the Dow Jones industrial components for a period of about past 10 years (1992-2002). An analogy between the classical dynamics in physics and the stock trade dynamics is used with the momentum, P= mv, where the velocity ( v) is a relative price change in a period ( τ) and the inertial mass ( m) is a normalized trade volume. Extrema in the momentum time series, i.e., the singularities in the driving force provide the signals for executing trades, minima with negative momentum to buy and maxima with positive momentum to sell. Trades are implemented using a momentum threshold ( Pc). A range of periodic cycles ( τ=5-240 days) in time series and trading momentum thresholds (| Pc|=0.01-0.5) are considered and returns (maximum, minimum, accumulative, and average) are examined in detail on the historical DJI data for about a decade (1992-2002). Frequency of trade is generally higher with smaller periods with the high probability of higher returns at | Pc|=0.02-0.1 for nearly all stocks in DJI.

  3. VizieR Online Data Catalog: Compact radio cores in radio galaxies. (Jones+, 1994)

    NASA Astrophysics Data System (ADS)

    Jones, P. A.; McAdam, W. B.; Reynolds, J. E.

    1999-04-01

    This catalog contains compact core fluxes for a list of 175 southern radio galaxies, measured with the Parkes-Tidbinbilla Interferometer (PTI, Norris et al. 1988ApJS...67...85N) on a single 275 km baseline at 2.3 GHz and 8.4 GHz. The sample consists of large angular size ( > 0.5 arcmin) steep spectrum sources from Jones & McAdam (1992ApJS...80..137J) observed to determine the fraction of flux contained in compact (VLBI-scale) cores. Of the 172 sources observed at 2.3 GHz (100 milliarcsec fringe spacing), 63 had cores detected and upper limits were determined for the remaining 109. Of the 88 sources observed at 8.4 GHz (30 milliarcsec fringe spacing), 38 had cores detected and 50 have upper limits. A comparison of the detections and upper limits at the two frequencies shows that the cores have flat or inverted spectra. The core fluxes quoted here may vary by around 20 % if there is structure on the scale of the fringe spacing and the cores are probably intrinsically variable. (1 data file).

  4. Single-site Lennard-Jones models via polynomial chaos surrogates of Monte Carlo molecular simulation.

    PubMed

    Kadoura, Ahmad; Siripatana, Adil; Sun, Shuyu; Knio, Omar; Hoteit, Ibrahim

    2016-06-01

    In this work, two Polynomial Chaos (PC) surrogates were generated to reproduce Monte Carlo (MC) molecular simulation results of the canonical (single-phase) and the NVT-Gibbs (two-phase) ensembles for a system of normalized structureless Lennard-Jones (LJ) particles. The main advantage of such surrogates, once generated, is the capability of accurately computing the needed thermodynamic quantities in a few seconds, thus efficiently replacing the computationally expensive MC molecular simulations. Benefiting from the tremendous computational time reduction, the PC surrogates were used to conduct large-scale optimization in order to propose single-site LJ models for several simple molecules. Experimental data, a set of supercritical isotherms, and part of the two-phase envelope, of several pure components were used for tuning the LJ parameters (ε, σ). Based on the conducted optimization, excellent fit was obtained for different noble gases (Ar, Kr, and Xe) and other small molecules (CH4, N2, and CO). On the other hand, due to the simplicity of the LJ model used, dramatic deviations between simulation and experimental data were observed, especially in the two-phase region, for more complex molecules such as CO2 and C2 H6. PMID:27276951

  5. A Jones matrix formalism for simulating three-dimensional polarized light imaging of brain tissue.

    PubMed

    Menzel, M; Michielsen, K; De Raedt, H; Reckfort, J; Amunts, K; Axer, M

    2015-10-01

    The neuroimaging technique three-dimensional polarized light imaging (3D-PLI) provides a high-resolution reconstruction of nerve fibres in human post-mortem brains. The orientations of the fibres are derived from birefringence measurements of histological brain sections assuming that the nerve fibres—consisting of an axon and a surrounding myelin sheath—are uniaxial birefringent and that the measured optic axis is oriented in the direction of the nerve fibres (macroscopic model). Although experimental studies support this assumption, the molecular structure of the myelin sheath suggests that the birefringence of a nerve fibre can be described more precisely by multiple optic axes oriented radially around the fibre axis (microscopic model). In this paper, we compare the use of the macroscopic and the microscopic model for simulating 3D-PLI by means of the Jones matrix formalism. The simulations show that the macroscopic model ensures a reliable estimation of the fibre orientations as long as the polarimeter does not resolve structures smaller than the diameter of single fibres. In the case of fibre bundles, polarimeters with even higher resolutions can be used without losing reliability. When taking the myelin density into account, the derived fibre orientations are considerably improved. PMID:26446561

  6. Essential oil composition of valeriana jatamansi jones from himalayan regions of India.

    PubMed

    Raina, Archana P; Negi, K S

    2015-01-01

    Valeriana jatamansi Jones germplasm collected from sub-temperate Himalayan region of Uttarakhand and North-East state of Meghalaya, India was evaluated under identical conditions at National Bureau of Plant Genetic Resources, Bhowali, India, to study germplasm diversity based on essential oil composition. Twenty one compounds were identified in V. jatamansi root oil by GC and GC-MS. The major compounds identified were patchouli alcohol (0.4-63.7%), maaliol (2.9-53.8%), seychellene (4.1-27.4%), calarene/ß-gurjunene (3.0-20.8%), α-santalene (0.6-12.0%). Other compounds present were bornyl acetate (0.6-1.5%), α-guaiene (0.7-2.3%), α-bulnesene/δ-guaiene (0.7-6.3%), 7-epi-α-selinene (0.4-1.4%), kessane (2.1-3.3%), spathulenol (0.7-3.4%), viridiflorol (0.9-7.1%), α-patchoulene (0.8-6.6%), ß-patchoulene (0.4-0.8%). Two superior chemotypes identified in V. jatamansi oil from Uttarakhand were: patchouli alcohol rich (IC573221, 63.7%) and maaliol rich (IC573222, 53.8%; IC589096, 51.7%), while accession from north-east was patchouli alcohol rich chemotype (IC574522, 57.2%). These superior chemotypes with higher amounts of patchouli alcohol and maaliol could be used for promoting cultivation as well as for meeting need of pharmaceutical industries. PMID:26009656

  7. Determination of anharmonic free energy contributions: Low temperature phases of the Lennard-Jones system.

    PubMed

    Calero, C; Knorowski, C; Travesset, A

    2016-03-28

    We investigate a general method to calculate the free energy of crystalline solids by considering the harmonic approximation and quasistatically switching the anharmonic contribution. The advantage of this method is that the harmonic approximation provides an already very accurate estimate of the free energy, and therefore the anharmonic term is numerically very small and can be determined to high accuracy. We further show that the anharmonic contribution to the free energy satisfies a number of exact inequalities that place constraints on its magnitude and allows approximate but fast and accurate estimates. The method is implemented into a readily available general software by combining the code HOODLT (Highly Optimized Object Oriented Dynamic Lattice Theory) for the harmonic part and the molecular dynamics (MD) simulation package HOOMD-blue for the anharmonic part. We use the method to calculate the low temperature phase diagram for Lennard-Jones particles. We demonstrate that hcp is the equilibrium phase at low temperature and pressure and obtain the coexistence curve with the fcc phase, which exhibits reentrant behavior. Several implications of the method are discussed. PMID:27036422

  8. Single-site Lennard-Jones models via polynomial chaos surrogates of Monte Carlo molecular simulation

    NASA Astrophysics Data System (ADS)

    Kadoura, Ahmad; Siripatana, Adil; Sun, Shuyu; Knio, Omar; Hoteit, Ibrahim

    2016-06-01

    In this work, two Polynomial Chaos (PC) surrogates were generated to reproduce Monte Carlo (MC) molecular simulation results of the canonical (single-phase) and the NVT-Gibbs (two-phase) ensembles for a system of normalized structureless Lennard-Jones (LJ) particles. The main advantage of such surrogates, once generated, is the capability of accurately computing the needed thermodynamic quantities in a few seconds, thus efficiently replacing the computationally expensive MC molecular simulations. Benefiting from the tremendous computational time reduction, the PC surrogates were used to conduct large-scale optimization in order to propose single-site LJ models for several simple molecules. Experimental data, a set of supercritical isotherms, and part of the two-phase envelope, of several pure components were used for tuning the LJ parameters (ɛ, σ). Based on the conducted optimization, excellent fit was obtained for different noble gases (Ar, Kr, and Xe) and other small molecules (CH4, N2, and CO). On the other hand, due to the simplicity of the LJ model used, dramatic deviations between simulation and experimental data were observed, especially in the two-phase region, for more complex molecules such as CO2 and C2 H6.

  9. Molecular dynamics study of nanobubbles in the equilibrium Lennard-Jones fluid.

    PubMed

    Zhukhovitskii, D I

    2013-10-28

    We employ a model, in which the density fluctuations in a bulk liquid are represented as presence of the clusters of molecules with the lowered number of nearest neighbors (number of bonds). The nanobubble size distribution is calculated on the basis of a close analogy between the surface part of the work of formation for a cluster and for a nanobubble. The pre-exponential factor for this distribution is related to the fluid compressibility. Estimates made for different liquids show that it can be noticeably different from that adopted in the classical nucleation theory (CNT). Molecular dynamics (MD) simulation is performed for a liquid inside a macroscopic droplet of molecules interacting via the Lennard-Jones potential plus a long-range tail. The nanobubbles are identified by clusters of bond-deficient particles with the optimum number of bonds that provide the maximum nanobubble number density and maximum resolvable nanobubble equimolar size. The results of MD simulation are in qualitatively better agreement with proposed theory than with CNT. PMID:24182055

  10. Enhancement of the droplet nucleation in a dense supersaturated Lennard-Jones vapor

    NASA Astrophysics Data System (ADS)

    Zhukhovitskii, D. I.

    2016-05-01

    The vapor-liquid nucleation in a dense Lennard-Jones system is studied analytically and numerically. A solution of the nucleation kinetic equations, which includes the elementary processes of condensation/evaporation involving the lightest clusters, is obtained, and the nucleation rate is calculated. Based on the equation of state for the cluster vapor, the pre-exponential factor is obtained. The latter diverges as a spinodal is reached, which results in the nucleation enhancement. The work of critical cluster formation is calculated using the previously developed two-parameter model (TPM) of small clusters. A simple expression for the nucleation rate is deduced and it is shown that the work of cluster formation is reduced for a dense vapor. This results in the nucleation enhancement as well. To verify the TPM, a simulation is performed that mimics a steady-state nucleation experiments in the thermal diffusion cloud chamber. The nucleating vapor with and without a carrier gas is simulated using two different thermostats for the monomers and clusters. The TPM proves to match the simulation results of this work and of other studies.

  11. Effect of confinement on the solid-liquid coexistence of Lennard-Jones Fluid

    SciTech Connect

    Das, Chandan K.; Singh, Jayant K.

    2013-11-07

    The solid-liquid coexistence of a Lennard-Jones fluid confined in slit pores of variable pore size, H, is studied using molecular dynamics simulations. Three-stage pseudo-supercritical transformation path of Grochola [J. Chem. Phys. 120(5), 2122 (2004)] and multiple histogram reweighting are employed for the confined system, for various pore sizes ranging from 20 to 5 molecular diameters, to compute the solid-liquid coexistence. The Gibbs free energy difference is evaluated using thermodynamic integration method by connecting solid-liquid phases under confinement via one or more intermediate states without any first order phase transition among them. Thermodynamic melting temperature is found to oscillate with wall separation, which is in agreement with the behavior seen for kinetic melting temperature evaluated in an earlier study. However, thermodynamic melting temperature for almost all wall separations is higher than the bulk case, which is contrary to the behavior seen for the kinetic melting temperature. The oscillation founds to decay at around H = 12, and beyond that pore size dependency of the shift in melting point is well represented by the Gibbs-Thompson equation.

  12. Thermodynamic stability of soft-core Lennard-Jones fluids and their mixtures

    NASA Astrophysics Data System (ADS)

    Heyes, D. M.

    2010-02-01

    Thermodynamic stability of model single component and binary mixture fluids is considered with the Fisher-Ruelle (FR) stability criteria, which apply in the thermodynamic limit, and molecular dynamics (MD) simulation for finite periodic systems. Two soft-core potential forms are considered, ϕ6,1(r)=4[1/(a +r6)2-1/(a +r6)] and ϕ2,3(r)=4[1/(a +r2)6-1/(a+r2)3], where r is the separation between the particle centers. According to FR these are unstable in the thermodynamic limit if a >ac=1/2 and a >ac=(7/32)1/3, respectively. MD simulations with single-component particles show, however, that this transition on typical simulation times is more gradual for finite periodic systems with variation in a on either side of ac. For a Jones and ϕ2,3 particles, phase separation into regions richer in one component than the other was observed for a ac, with the unstable component in the mixture breaking up into many long-lived microdroplets which conferred apparent equilibrium thermodynamic behavior (i.e., negligible N-dependence of the average potential energy per particle) in this period.

  13. Molecular dynamics study of nanobubbles in the equilibrium Lennard-Jones fluid

    NASA Astrophysics Data System (ADS)

    Zhukhovitskii, D. I.

    2013-10-01

    We employ a model, in which the density fluctuations in a bulk liquid are represented as presence of the clusters of molecules with the lowered number of nearest neighbors (number of bonds). The nanobubble size distribution is calculated on the basis of a close analogy between the surface part of the work of formation for a cluster and for a nanobubble. The pre-exponential factor for this distribution is related to the fluid compressibility. Estimates made for different liquids show that it can be noticeably different from that adopted in the classical nucleation theory (CNT). Molecular dynamics (MD) simulation is performed for a liquid inside a macroscopic droplet of molecules interacting via the Lennard-Jones potential plus a long-range tail. The nanobubbles are identified by clusters of bond-deficient particles with the optimum number of bonds that provide the maximum nanobubble number density and maximum resolvable nanobubble equimolar size. The results of MD simulation are in qualitatively better agreement with proposed theory than with CNT.

  14. Nucleation of liquid droplets and voids in a stretched Lennard-Jones fcc crystal

    SciTech Connect

    Baidakov, Vladimir G. Tipeev, Azat O.

    2015-09-28

    The method of molecular dynamics simulation has been used to investigate the phase decay of a metastable Lennard-Jones face-centered cubic crystal at positive and negative pressures. It is shown that at high degrees of metastability, crystal decay proceeds through the spontaneous formation and growth of new-phase nuclei. It has been found that there exists a certain boundary temperature. Below this temperature, the crystal phase disintegrates as the result of formation of voids, and above, as a result of formation of liquid droplets. The boundary temperature corresponds to the temperature of cessation of a crystal–liquid phase equilibrium when the melting line comes in contact with the spinodal of the stretched liquid. The results of the simulations are interpreted in the framework of classical nucleation theory. The thermodynamics of phase transitions in solids has been examined with allowance for the elastic energy of stresses arising owing to the difference in the densities of the initial and the forming phases. As a result of the action of elastic forces, at negative pressures, the boundary of the limiting superheating (stretching) of a crystal approaches the spinodal, on which the isothermal bulk modulus of dilatation becomes equal to zero. At the boundary of the limiting superheating (stretching), the shape of liquid droplets and voids is close to the spherical one.

  15. Essential Oil Composition of Valeriana Jatamansi Jones from Himalayan Regions of India

    PubMed Central

    Raina, Archana P.; Negi, K. S.

    2015-01-01

    Valeriana jatamansi Jones germplasm collected from sub-temperate Himalayan region of Uttarakhand and North-East state of Meghalaya, India was evaluated under identical conditions at National Bureau of Plant Genetic Resources, Bhowali, India, to study germplasm diversity based on essential oil composition. Twenty one compounds were identified in V. jatamansi root oil by GC and GC-MS. The major compounds identified were patchouli alcohol (0.4-63.7%), maaliol (2.9-53.8%), seychellene (4.1-27.4%), calarene/ß-gurjunene (3.0-20.8%), α-santalene (0.6-12.0%). Other compounds present were bornyl acetate (0.6-1.5%), α-guaiene (0.7-2.3%), α-bulnesene/δ-guaiene (0.7-6.3%), 7-epi-α-selinene (0.4-1.4%), kessane (2.1-3.3%), spathulenol (0.7-3.4%), viridiflorol (0.9-7.1%), α-patchoulene (0.8-6.6%), ß-patchoulene (0.4-0.8%). Two superior chemotypes identified in V. jatamansi oil from Uttarakhand were: patchouli alcohol rich (IC573221, 63.7%) and maaliol rich (IC573222, 53.8%; IC589096, 51.7%), while accession from north-east was patchouli alcohol rich chemotype (IC574522, 57.2%). These superior chemotypes with higher amounts of patchouli alcohol and maaliol could be used for promoting cultivation as well as for meeting need of pharmaceutical industries. PMID:26009656

  16. Theory of slope-dependent disjoining pressure with application to Lennard-Jones liquid films.

    PubMed

    Yi, Taeil; Wong, Harris

    2007-09-15

    A liquid film of thickness h<100 nm is subject to additional intermolecular forces, which are collectively called disjoining pressure Pi. Since Pi dominates at small film thicknesses, it determines the stability and wettability of thin films. Current theory derived for uniform films gives Pi=Pi(h). This solution has been applied recently to non-uniform films and becomes unbounded near a contact line as h-->0. Consequently, many different effects have been considered to eliminate or circumvent this singularity. We present a mean-field theory of Pi that depends on the slope h(x) as well as the height h of the film. When this theory is implemented for Lennard-Jones liquid films, the new Pi=Pi(h,h(x)) is bounded near a contact line as h-->0. Thus, the singularity in Pi(h) is artificial because it results from extending a theory beyond its range of validity. We also show that the new Pi can capture all three regimes of drop behavior (complete wetting, partial wetting, and pseudo-partial wetting) without altering the signs of the long and short-range interactions. We find that a drop with a precursor film is linearly stable. PMID:17570389

  17. Determination of anharmonic free energy contributions: Low temperature phases of the Lennard-Jones system

    DOE PAGESBeta

    Calero, C.; Knorowski, C.; Travesset, A.

    2016-03-22

    We investigate a general method to calculate the free energy of crystalline solids by considering the harmonic approximation and quasistatically switching the anharmonic contribution. The advantage of this method is that the harmonic approximation provides an already very accurate estimate of the free energy, and therefore the anharmonic term is numerically very small and can be determined to high accuracy. We further show that the anharmonic contribution to the free energy satisfies a number of exact inequalities that place constraints on its magnitude and allows approximate but fast and accurate estimates. The method is implemented into a readily available generalmore » software by combining the code HOODLT (Highly Optimized Object Oriented Dynamic Lattice Theory) for the harmonic part and the molecular dynamics (MD) simulation package HOOMD-blue for the anharmonic part. We use the method to calculate the low temperature phase diagram for Lennard-Jones particles. We demonstrate that hcp is the equilibrium phase at low temperature and pressure and obtain the coexistence curve with the fcc phase, which exhibits reentrant behavior. Furthermore, several implications of the method are discussed.« less

  18. Relativistic kinematics formulation of the polarization effects of Jones-Mueller matrices.

    PubMed

    Franssens, Ghislain R

    2015-02-01

    The polarization of a partially coherent, transverse electric, electromagnetic plane wave is commonly represented by a Stokes vector. The similarity between Stokes vectors and four-momentum vectors in special relativity (SR) is studied in depth. The set of Stokes vectors naturally possesses a Euclidean and a Lorentzian geometry. The latter is used to express the polarization-altering properties of Jones-Mueller matrices in a simple and elegant way. In particular, it is shown that the action of a diattenuator on a Stokes vector can be understood in terms of the addition law for velocities from SR. An important simplification in the resulting mathematical expressions further arises if the degree of polarization of a Stokes vector is represented by a hyperbolic polarization angle. This then allows us to demonstrate that the output hyperbolic polarization angle is related to a diattenuator hyperbolic polarization angle and the input hyperbolic polarization angle by the hyperbolic law of cosines holding in a hyperbolic triangle. PMID:26366587

  19. Chemical diversity in the essential oil of Indian valerian (Valeriana jatamansi Jones).

    PubMed

    Verma, Ram S; Verma, Rajesh K; Padalia, Rajendra C; Chauhan, Amit; Singh, Anand; Singh, Hemendra P

    2011-10-01

    To explore the diversity in the essential oil yield and composition of Valeriana jatamansi Jones (syn. V. wallichii DC) growing wild in Uttarakhand (Western Himalaya), 17 populations were collected from different locations and grown under similar conditions. Comparative results showed considerable variations in the essential oil yield and composition. The essential oil yield varied from 0.21 to 0.46% in the fresh roots and rhizomes of different populations of V. jatamansi. Analysis of the essential oils by GC (RI) and GC/MS and the subsequent classification by principal component analysis (PCA) resulted in six clusters with significant variations in their terpenoid composition. Major components in the essential oils of the different populations were patchouli alcohol (1; 13.4-66.7%), α-bulnesene (3; <0.05-23.5%), α-guaiene (4; 0.2-13.3%), guaiol (5; <0.05-12.2%), seychellene (6; 0.2-9.9%) viridiflorol (<0.05-7.3%), and β-gurjunene (7; 0.0-7.1%). V. jatamansi populations with contents of 1 higher than 60% may be utilized commercially in perfumery. PMID:22006721

  20. A Lennard-Jones plus Coulomb potential for Al3+ ions in aqueous solutions

    NASA Astrophysics Data System (ADS)

    Faro, Tatiana M. C.; Thim, Gilmar P.; Skaf, Munir S.

    2010-03-01

    We developed a simple pair-additive Lennard-Jones plus Coulomb potential for molecular simulations of the trivalent cation Al3+ in water which accounts reasonably well for the behavior of aluminum aqueous solutions. The model predicts an octahedral first hydration shell containing 6 water molecules and a trigonal second shell with 12 molecules on average, in good agreement with the available experimentally determined structure. The peak positions of the cation-oxygen radial distribution function are only slightly compressed compared to the x-ray structure, the hydration enthalpy is 10% too low, and the cation self-diffusion coefficient and the single-particle second rank reorientational time are in excellent agreement with inelastic neutron scattering and NMR spectroscopy data, respectively. The model also captures the essential vibrational features of the hydrated [Al(H2O)6]3+ complex. It predicts the main O-Al-O bending mode frequency to within ˜5%, but significantly overestimates the frequency of the totally symmetric Al-O stretching mode. Overall, the accuracy of the proposed model is as good as the best available classical potentials, if not better in some aspects, with a much simpler functional form, which makes it an attractive alternative for computer simulations of Al3+ in more complex aqueous and biomolecular systems.

  1. Molecular Dynamics Simulation of the Lennard--Jones Polymers in a Good Solvent

    NASA Astrophysics Data System (ADS)

    Ciesla, M.; Pawlowicz, J.; Longa, L.

    2007-05-01

    We carried out united-atom Langevin dynamics simulations of polymer's equilibrium state in a good solvent. Our primary goal was a pedagogical exposition of fundamental equilibrium properties of isolated polymers in dilutions with a model that contains many features of real materials. The polymer was chosen to be a three-dimensional chain of N identical beads (monomers) without internal structure. Each monomer interacted with its two neighbors by a harmonic potential, which modeled a chemical bond. Additionally all monomers within a chain were assumed to interact through the Lennard-Jones (LJ) potential. Interaction with solvent and with other polymers was introduced using Langevin forces. Analyzing internal energy per polymer and radius of gyration as function of temperature we observed a rapid globule to coil phase transition. Also we studied elastic properties of single polymer chain for temperatures below the transition and identified three regions with different elastic behavior. Typical chain lengths in our simulations ranged from 100 to 1000 monomers. The elaborated software package can easily be modified to study {e.g.} the effect of polymer stiffness on thermodynamic behavior.

  2. Effect of Energy Polydispersity on the Nature of Lennard-Jones Liquids.

    PubMed

    Ingebrigtsen, Trond S; Tanaka, Hajime

    2016-08-11

    In the companion paper [ Ingebrigtsen , T. S. ; Tanaka , H. J. Phys. Chem. B 2015 , 119 , 11052 ] the effect of size polydispersity on the nature of Lennard-Jones (LJ) liquids, which represent most molecular liquids without hydrogen bonds, was studied. More specifically, it was shown that even highly size polydisperse LJ liquids are Roskilde-simple (RS) liquids. RS liquids are liquids with strong correlation between constant volume equilibrium fluctuations of virial and potential energy and are simpler than other types of liquids. Moreover, it was shown that size polydisperse LJ liquids have isomorphs to a good approximation. Isomorphs are curves in the phase diagram of RS liquids along which structure, dynamics, and some thermodynamic quantities are invariant in dimensionless (reduced) units. In this paper, we study the effect of energy polydispersity on the nature of LJ liquids. We show that energy polydisperse LJ liquids are RS liquids. However, a tendency of particle segregation, which increases with the degree of polydispersity, leads to a loss of strong virial-potential energy correlation but is mitigated by increasing temperature and/or density. Isomorphs are a good approximation also for energy polydisperse LJ liquids, although particle-resolved quantities display a somewhat poorer scaling compared to the mean quantities along the isomorph. PMID:27434103

  3. Freezing and melting line invariants of the Lennard-Jones system.

    PubMed

    Costigliola, Lorenzo; Schrøder, Thomas B; Dyre, Jeppe C

    2016-06-01

    The invariance of several structural and dynamical properties of the Lennard-Jones (LJ) system along the freezing and melting lines is interpreted in terms of isomorph theory. First the freezing/melting lines of the LJ system are shown to be approximated by isomorphs. Then we show that the invariants observed along the freezing and melting isomorphs are also observed on other isomorphs in the liquid and crystalline phases. The structure is probed by the radial distribution function and the structure factor and dynamics are probed by the mean-square displacement, the intermediate scattering function, and the shear viscosity. Studying these properties with reference to isomorph theory explains why the known single-phase melting criteria hold, e.g., the Hansen-Verlet and the Lindemann criteria, and why the Andrade equation for the viscosity at freezing applies, e.g., for most liquid metals. Our conclusion is that these empirical rules and invariants can all be understood from isomorph theory and that the invariants are not peculiar to the freezing and melting lines, but hold along all isomorphs. PMID:27186598

  4. Determination of anharmonic free energy contributions: Low temperature phases of the Lennard-Jones system

    NASA Astrophysics Data System (ADS)

    Calero, C.; Knorowski, C.; Travesset, A.

    2016-03-01

    We investigate a general method to calculate the free energy of crystalline solids by considering the harmonic approximation and quasistatically switching the anharmonic contribution. The advantage of this method is that the harmonic approximation provides an already very accurate estimate of the free energy, and therefore the anharmonic term is numerically very small and can be determined to high accuracy. We further show that the anharmonic contribution to the free energy satisfies a number of exact inequalities that place constraints on its magnitude and allows approximate but fast and accurate estimates. The method is implemented into a readily available general software by combining the code HOODLT (Highly Optimized Object Oriented Dynamic Lattice Theory) for the harmonic part and the molecular dynamics (MD) simulation package HOOMD-blue for the anharmonic part. We use the method to calculate the low temperature phase diagram for Lennard-Jones particles. We demonstrate that hcp is the equilibrium phase at low temperature and pressure and obtain the coexistence curve with the fcc phase, which exhibits reentrant behavior. Several implications of the method are discussed.

  5. An accurate Van der Waals-type equation of state for the Lennard-Jones fluid

    SciTech Connect

    Mecke, M.; Mueller, A.; Winkelmann, J.

    1996-03-01

    A new equation of state (EOS) is proposed for the Helmholtz energy F of the Lennard-Jones fluid which represents the thermodynamic properties over a wide range of temperatures and densities. The EOS is written in the form of a generalized van der Waals equation, F= F{sub H} + F{sub A}, where F{sub H} is a hard body contribution and FA an attractive dispersion force contribution. The expression for F{sub H} is closely related to the hybrid Barker-Henderson pertubation theory. The construction of FA is accomplished with the Setzmann-Wagner optimization procedure on the basis of virial coefficients and critically assessed computer simulation data. A comparison with the EOS shows improvement in the description of the vapor-liquid coexistence properties, the pvT data, and in peculiar, of the caloric properties. A comparison with the EOS of Kolafa and Nezbeda which appeared after the bulk of this work was finished shows still an improvement in the standard deviations of the pressure and internal energy by about 30%.

  6. Connectivity in the potential energy landscape for binary Lennard-Jones systems

    NASA Astrophysics Data System (ADS)

    de Souza, Vanessa K.; Wales, David J.

    2009-05-01

    Connectivity in the potential energy landscape of a binary Lennard-Jones system can be characterized at the level of cage-breaking. We calculate the number of cage-breaking routes from a given local minimum and determine the branching probabilities at different temperatures, along with correlation factors that represent the repeated reversals of cage-breaking events. The number of reversals increases at lower temperatures and for more fragile systems, while the number of accessible connections decreases. We therefore associate changes in connectivity with super-Arrhenius behavior. Reversals in minimum-to-minimum transitions are common, but often correspond to "non-cage-breaking" processes. We demonstrate that the average waiting time within a minimum shows simple exponential behavior with decreasing temperature. To describe the long-term behavior of the system, we consider reversals and connectivity in terms of the "cage-breaking" processes that are pertinent to diffusion [V. K. de Souza and D. J. Wales, J. Chem. Phys. 129, 164507 (2008)]. These cage-breaking events can be modeled by a correlated random walk. Thus, a full correlation factor can be calculated using short simulations that extend up to two cage-breaking events.

  7. A battle for compensation for Welsh coal miners: JS Haldane v "Sericite" Jones, 1932-1934.

    PubMed

    Greenberg, M

    1997-09-01

    Toward the end of the 1920s, technical advances in mining led to an increase in airborne burdens of dust in the South Wales coal mines. This coincided with a dramatic increase in the incidence of disability and death from respiratory disease among the miners. For their condition to be compensable, claimants were required to have worked with rock containing more than 50% 'free silica.' Dr W.R. Jones, a mining geologist, was asked to help obtain compensation for those claimants who could not satisfy the 'free silica' condition. He was unable to identify high-silica rocks where none had been said to exist. He did however, successfully argue the brief against the eminent Professor J.S. Haldane (who was the dominant authority, having had lengthy experience in the field of health and mining), for the fibrous form of sericite being commonly the important agent responsible for pneumoconiosis. As a consequence, the category of miner eligible for compensation was broadened. Evidence was gathered worldwide that supported the hypothesis that silicates and not just crystalline silica could cause pneumoconiosis. Despite the suspicions raised about the special power of mineral fibers during this public debate, some 40 years were to elapse before potential health hazards from fibers other than asbestos were to be taken seriously and investigated. PMID:9219663

  8. A Hybrid Vehicle Detection Method Based on Viola-Jones and HOG + SVM from UAV Images.

    PubMed

    Xu, Yongzheng; Yu, Guizhen; Wang, Yunpeng; Wu, Xinkai; Ma, Yalong

    2016-01-01

    A new hybrid vehicle detection scheme which integrates the Viola-Jones (V-J) and linear SVM classifier with HOG feature (HOG + SVM) methods is proposed for vehicle detection from low-altitude unmanned aerial vehicle (UAV) images. As both V-J and HOG + SVM are sensitive to on-road vehicles' in-plane rotation, the proposed scheme first adopts a roadway orientation adjustment method, which rotates each UAV image to align the roads with the horizontal direction so the original V-J or HOG + SVM method can be directly applied to achieve fast detection and high accuracy. To address the issue of descending detection speed for V-J and HOG + SVM, the proposed scheme further develops an adaptive switching strategy which sophistically integrates V-J and HOG + SVM methods based on their different descending trends of detection speed to improve detection efficiency. A comprehensive evaluation shows that the switching strategy, combined with the road orientation adjustment method, can significantly improve the efficiency and effectiveness of the vehicle detection from UAV images. The results also show that the proposed vehicle detection method is competitive compared with other existing vehicle detection methods. Furthermore, since the proposed vehicle detection method can be performed on videos captured from moving UAV platforms without the need of image registration or additional road database, it has great potentials of field applications. Future research will be focusing on expanding the current method for detecting other transportation modes such as buses, trucks, motors, bicycles, and pedestrians. PMID:27548179

  9. How long the singular value decomposed entropy predicts the stock market? - Evidence from the Dow Jones Industrial Average Index

    NASA Astrophysics Data System (ADS)

    Gu, Rongbao; Shao, Yanmin

    2016-07-01

    In this paper, a new concept of multi-scales singular value decomposition entropy based on DCCA cross correlation analysis is proposed and its predictive power for the Dow Jones Industrial Average Index is studied. Using Granger causality analysis with different time scales, it is found that, the singular value decomposition entropy has predictive power for the Dow Jones Industrial Average Index for period less than one month, but not for more than one month. This shows how long the singular value decomposition entropy predicts the stock market that extends Caraiani's result obtained in Caraiani (2014). On the other hand, the result also shows an essential characteristic of stock market as a chaotic dynamic system.

  10. Analytical evaluation of third virial coefficient with Lennard-Jones (12-6) potential and its applications

    NASA Astrophysics Data System (ADS)

    Mamedov, Bahtiyar Akber; Somuncu, Elif

    2016-04-01

    An efficient analytical method to evaluate the third virial coefficient with Lennard-Jones (12-6) type potential is presented. Proposed approach is particularly suitable for analysis of various properties of three body systems. To conform the correctness of the calculation result, a comparison is given with the literature for NO2, SF6 and C2H2 molecules. Calculation results show that obtained formulae provide higher accuracy and efficiency than the proposed approaches in literature.

  11. Simple estimation of all-sky, direction-dependent Jones matrix of primary beams of radio interferometers

    NASA Astrophysics Data System (ADS)

    Carozzi, T. D.

    2016-07-01

    The dual-polarized primary beams of imaging radio telescopes are generally not perfectly orthogonal nor have the same gain, the resulting polarimetric images are distorted, in other words, they exhibit instrumental polarization. This is often modeled in radio astronomy using a Jones matrix formalism, and the standard practice is to calibrate (i.e. determine the Jones matrices) using known point source, polarized calibrators. Using point source calibrators on the other hand can be difficult and is ineffective for wide fields-of-view (FoV). Often however, a large portion of the FoV of imaging radio telescopes consists of unpolarized background. In this paper I estimate Jones matrices over the FoV by assuming that most of the background image is unpolarized and then taking the square-root of the brightness matrices. Results from LOFAR LBA data are shown and are consistent with expectation. The usefulness of this particular method, compared to using polarized point source calibrators, is its simplicity and the fact that it can cover most of the FoV.

  12. Conformation of a flexible polymer in explicit solvent: Accurate solvation potentials for Lennard-Jones chains.

    PubMed

    Taylor, Mark P; Ye, Yuting; Adhikari, Shishir R

    2015-11-28

    The conformation of a polymer chain in solution is coupled to the local structure of the surrounding solvent and can undergo large changes in response to variations in solvent density and temperature. The many-body effects of solvent on the structure of an n-mer polymer chain can be formally mapped to an exact n-body solvation potential. Here, we use a pair decomposition of this n-body potential to construct a set of two-body potentials for a Lennard-Jones (LJ) polymer chain in explicit LJ solvent. The solvation potentials are built from numerically exact results for 5-mer chains in solvent combined with an approximate asymptotic expression for the solvation potential between sites that are distant along the chain backbone. These potentials map the many-body chain-in-solvent problem to a few-body single-chain problem and can be used to study a chain of arbitrary length, thereby dramatically reducing the computational complexity of the polymer chain-in-solvent problem. We have constructed solvation potentials at a large number of state points across the LJ solvent phase diagram including the vapor, liquid, and super-critical regions. We use these solvation potentials in single-chain Monte Carlo (MC) simulations with n ≤ 800 to determine the size, intramolecular structure, and scaling behavior of chains in solvent. To assess our results, we have carried out full chain-in-solvent MC simulations (with n ≤ 100) and find that our solvation potential approach is quantitatively accurate for a wide range of solvent conditions for these chain lengths. PMID:26627969

  13. Detecting macroeconomic phases in the Dow Jones Industrial Average time series

    NASA Astrophysics Data System (ADS)

    Wong, Jian Cheng; Lian, Heng; Cheong, Siew Ann

    2009-11-01

    In this paper, we perform statistical segmentation and clustering analysis of the Dow Jones Industrial Average (DJI) time series between January 1997 and August 2008. Modeling the index movements and log-index movements as stationary Gaussian processes, we find a total of 116 and 119 statistically stationary segments respectively. These can then be grouped into between five and seven clusters, each representing a different macroeconomic phase. The macroeconomic phases are distinguished primarily by their volatilities. We find that the US economy, as measured by the DJI, spends most of its time in a low-volatility phase and a high-volatility phase. The former can be roughly associated with economic expansion, while the latter contains the economic contraction phase in the standard economic cycle. Both phases are interrupted by a moderate-volatility market correction phase, but extremely-high-volatility market crashes are found mostly within the high-volatility phase. From the temporal distribution of various phases, we see a high-volatility phase from mid-1998 to mid-2003, and another starting mid-2007 (the current global financial crisis). Transitions from the low-volatility phase to the high-volatility phase are preceded by a series of precursor shocks, whereas the transition from the high-volatility phase to the low-volatility phase is preceded by a series of inverted shocks. The time scale for both types of transitions is about a year. We also identify the July 1997 Asian Financial Crisis to be the trigger for the mid-1998 transition, and an unnamed May 2006 market event related to corrections in the Chinese markets to be the trigger for the mid-2007 transition.

  14. Crystallization of Lennard-Jones nanodroplets: From near melting to deeply supercooled.

    PubMed

    Malek, Shahrazad M A; Morrow, Gregory P; Saika-Voivod, Ivan

    2015-03-28

    We carry out molecular dynamics (MD) and Monte Carlo (MC) simulations to characterize nucleation in liquid clusters of 600 Lennard-Jones particles over a broad range of temperatures. We use the formalism of mean first-passage times to determine the rate and find that Classical Nucleation Theory (CNT) predicts the rate quite well, even when employing simple modelling of crystallite shape, chemical potential, surface tension, and particle attachment rate, down to the temperature where the droplet loses metastability and crystallization proceeds through growth-limited nucleation in an unequilibrated liquid. Below this crossover temperature, the nucleation rate is still predicted when MC simulations are used to directly calculate quantities required by CNT. Discrepancy in critical embryo sizes obtained from MD and MC arises when twinned structures with five-fold symmetry provide a competing free energy pathway out of the critical region. We find that crystallization begins with hcp-fcc stacked precritical nuclei and differentiation to various end structures occurs when these embryos become critical. We confirm that using the largest embryo in the system as a reaction coordinate is useful in determining the onset of growth-limited nucleation and show that it gives the same free energy barriers as the full cluster size distribution once the proper reference state is identified. We find that the bulk melting temperature controls the rate, even though the solid-liquid coexistence temperature for the droplet is significantly lower. The value of surface tension that renders close agreement between CNT and direct rate determination is significantly lower than what is expected for the bulk system. PMID:25833595

  15. Crystallization of Lennard-Jones nanodroplets: From near melting to deeply supercooled

    NASA Astrophysics Data System (ADS)

    Malek, Shahrazad M. A.; Morrow, Gregory P.; Saika-Voivod, Ivan

    2015-03-01

    We carry out molecular dynamics (MD) and Monte Carlo (MC) simulations to characterize nucleation in liquid clusters of 600 Lennard-Jones particles over a broad range of temperatures. We use the formalism of mean first-passage times to determine the rate and find that Classical Nucleation Theory (CNT) predicts the rate quite well, even when employing simple modelling of crystallite shape, chemical potential, surface tension, and particle attachment rate, down to the temperature where the droplet loses metastability and crystallization proceeds through growth-limited nucleation in an unequilibrated liquid. Below this crossover temperature, the nucleation rate is still predicted when MC simulations are used to directly calculate quantities required by CNT. Discrepancy in critical embryo sizes obtained from MD and MC arises when twinned structures with five-fold symmetry provide a competing free energy pathway out of the critical region. We find that crystallization begins with hcp-fcc stacked precritical nuclei and differentiation to various end structures occurs when these embryos become critical. We confirm that using the largest embryo in the system as a reaction coordinate is useful in determining the onset of growth-limited nucleation and show that it gives the same free energy barriers as the full cluster size distribution once the proper reference state is identified. We find that the bulk melting temperature controls the rate, even though the solid-liquid coexistence temperature for the droplet is significantly lower. The value of surface tension that renders close agreement between CNT and direct rate determination is significantly lower than what is expected for the bulk system.

  16. Triplet correlation functions in the Lennard-Jones fluid: Tests against molecular dynamics simulations

    NASA Astrophysics Data System (ADS)

    McNeil, William J.; Madden, William G.; Haymet, A. D. J.; Rice, Stuart A.

    1983-01-01

    A recent theory of Haymet, Rice, and Madden (HRM) for the pair and triplet correlation functions is tested at liquid state densities against new molecular dynamics results for the Lennard-Jones (12,6) fluid. The HRM integral equation, based on the Born-Green equation and a topological reduction of the diagrammatic expansion of the triplet correlation function, has been solved for a high temperature state (T*=2.74, ρ*=0.80) and is found to give triplet correlation functions in good agreement with the molecular dynamics results. For a lower-temperature state (T*=0.73, ρ*=0.85), where numerical difficulties have thus far frustrated attempts to obtain a self-consistent solution of the HRM integral equation, direct tests of the HRM closure are made using molecular dynamics pair correlation functions to evaluate the diagrams. Although some striking qualitative features of the triplet correlations are correctly described by the HRM closure for this low-temperature state, the HRM approach is not in quantitative agreement with the molecular dynamics results. Test calculations indicate that the principle source of these errors is the neglect of important higher-order diagrams for the triplet correlation function. A reorganization of the diagrammatic series is suggested which may identify the most important of these neglected diagrams. Additional computer simulation results are also reported for the purely repulsive Weeks-Chandler-Andersen (WCA) ``reference'' fluid and for the underlying hard sphere fluid. The similarity of the pair structures of these fluids, noted by WCA, is also found to hold with high accuracy for the triplet structures. It is suggested that these similarities may be exploited in applying the methods of HRM to the hard sphere fluid.

  17. Clarifying hierarchical age-period-cohort models: A rejoinder to Bell and Jones.

    PubMed

    Reither, Eric N; Land, Kenneth C; Jeon, Sun Y; Powers, Daniel A; Masters, Ryan K; Zheng, Hui; Hardy, Melissa A; Keyes, Katherine M; Fu, Qiang; Hanson, Heidi A; Smith, Ken R; Utz, Rebecca L; Yang, Y Claire

    2015-11-01

    Previously, Reither et al. (2015) demonstrated that hierarchical age-period-cohort (HAPC) models perform well when basic assumptions are satisfied. To contest this finding, Bell and Jones (2015) invent a data generating process (DGP) that borrows age, period and cohort effects from different equations in Reither et al. (2015). When HAPC models applied to data simulated from this DGP fail to recover the patterning of APC effects, B&J reiterate their view that these models provide "misleading evidence dressed up as science." Despite such strong words, B&J show no curiosity about their own simulated data--and therefore once again misapply HAPC models to data that violate important assumptions. In this response, we illustrate how a careful analyst could have used simple descriptive plots and model selection statistics to verify that (a) period effects are not present in these data, and (b) age and cohort effects are conflated. By accounting for the characteristics of B&J's artificial data structure, we successfully recover the "true" DGP through an appropriately specified model. We conclude that B&Js main contribution to science is to remind analysts that APC models will fail in the presence of exact algebraic effects (i.e., effects with no random/stochastic components), and when collinear temporal dimensions are included without taking special care in the modeling process. The expanded list of coauthors on this commentary represents an emerging consensus among APC scholars that B&J's essential strategy--testing HAPC models with data simulated from contrived DGPs that violate important assumptions--is not a productive way to advance the discussion about innovative APC methods in epidemiology and the social sciences. PMID:26277370

  18. Liquid-liquid interfacial properties of a symmetrical Lennard-Jones binary mixture

    SciTech Connect

    Martínez-Ruiz, F. J.; Blas, F. J.; Moreno-Ventas Bravo, A. I.

    2015-09-14

    We determine the interfacial properties of a symmetrical binary mixture of equal-sized spherical Lennard-Jones molecules, σ{sub 11} = σ{sub 22}, with the same dispersive energy between like species, ϵ{sub 11} = ϵ{sub 22}, but different dispersive energies between unlike species low enough to induce phase separation. We use the extensions of the improved version of the inhomogeneous long-range corrections of Janecek [J. Phys. Chem. B 110, 6264 (2006)], presented recently by MacDowell and Blas [J. Chem. Phys. 131, 074705 (2009)] and Martínez-Ruiz et al. [J. Chem. Phys. 141, 184701 (2014)], to deal with the interaction energy and microscopic components of the pressure tensor. We perform Monte Carlo simulations in the canonical ensemble to obtain the interfacial properties of the symmetrical mixture with different cut-off distances r{sub c} and in combination with the inhomogeneous long-range corrections. The pressure tensor is obtained using the mechanical (virial) and thermodynamic route. The liquid-liquid interfacial tension is also evaluated using three different procedures, the Irving-Kirkwood method, the difference between the macroscopic components of the pressure tensor, and the test-area methodology. This allows to check the validity of the recent extensions presented to deal with the contributions due to long-range corrections for intermolecular energy and pressure tensor in the case of binary mixtures that exhibit liquid-liquid immiscibility. In addition to the pressure tensor and the surface tension, we also obtain density profiles and coexistence densities and compositions as functions of pressure, at a given temperature. According to our results, the main effect of increasing the cut-off distance r{sub c} is to sharpen the liquid-liquid interface and to increase the width of the biphasic coexistence region. Particularly interesting is the presence of a relative minimum in the total density profiles of the symmetrical mixture. This minimum is related

  19. The physical oceanography of Jones Bank: A mixing hotspot in the Celtic Sea

    NASA Astrophysics Data System (ADS)

    Palmer, Matthew R.; Inall, Mark E.; Sharples, Jonathan

    2013-10-01

    New measurements are presented of the currents and hydrography at Jones Bank in the Celtic Sea. These measurements, collected during the summer of 2008, identify a highly energetic internal wavefield generated by the local interaction of seasonally stratified flow with topography. Observations close to the bank crest reveal internal waves of up to 40 m amplitude; approaching 50% of the local water depth. These waves occur during spring periods and are predominantly associated with off-bank tidal flow. We provide evidence that these waves are the result of hydraulic control of the tidal currents which result in supercritical flow in the bottom mixed layer (bml) on the upper slopes of the bank. The waning tide produces a transition from super to subcritical flow, identifiable as a regular hydraulic jump on the bank slope. Microstructure measurements identify a turbulent 'bore' associated with such jumps that increases bml turbulence by several orders of magnitude and produces a regular burst of enhanced mixing at the base of the ever-present thermocline. Additional mixing in the surface mixed layer is provided during gale force conditions during the first of the two spring tides observed, occurring at the start of our three-week measurement period. The average thermocline mixing rate during stormy spring tide conditions is 1.9 (±1.0, 95%) × 10-3 m2 s-1, driven by both surface mixing and hydraulic jumps. During the later calm spring period the average thermocline mixing rate is 3.3 (±1.7) × 10-4 m2 s-1, dominated by jump associated events. By comparison, the intervening neap tide period produces no hydraulic jumps and is characterised by relatively calm weather. A strong shear layer is however maintained during this 'quiet' period sufficient to enhance thermocline turbulence by a factor 1000 above background levels. A short lived peak in thermocline turbulence during the neap period produces diapycnal mixing as high as 1.6 × 10-2 m2 s-1 however a more

  20. Liquid-liquid interfacial properties of a symmetrical Lennard-Jones binary mixture

    NASA Astrophysics Data System (ADS)

    Martínez-Ruiz, F. J.; Moreno-Ventas Bravo, A. I.; Blas, F. J.

    2015-09-01

    We determine the interfacial properties of a symmetrical binary mixture of equal-sized spherical Lennard-Jones molecules, σ11 = σ22, with the same dispersive energy between like species, ɛ11 = ɛ22, but different dispersive energies between unlike species low enough to induce phase separation. We use the extensions of the improved version of the inhomogeneous long-range corrections of Janec̆ek [J. Phys. Chem. B 110, 6264 (2006)], presented recently by MacDowell and Blas [J. Chem. Phys. 131, 074705 (2009)] and Martínez-Ruiz et al. [J. Chem. Phys. 141, 184701 (2014)], to deal with the interaction energy and microscopic components of the pressure tensor. We perform Monte Carlo simulations in the canonical ensemble to obtain the interfacial properties of the symmetrical mixture with different cut-off distances rc and in combination with the inhomogeneous long-range corrections. The pressure tensor is obtained using the mechanical (virial) and thermodynamic route. The liquid-liquid interfacial tension is also evaluated using three different procedures, the Irving-Kirkwood method, the difference between the macroscopic components of the pressure tensor, and the test-area methodology. This allows to check the validity of the recent extensions presented to deal with the contributions due to long-range corrections for intermolecular energy and pressure tensor in the case of binary mixtures that exhibit liquid-liquid immiscibility. In addition to the pressure tensor and the surface tension, we also obtain density profiles and coexistence densities and compositions as functions of pressure, at a given temperature. According to our results, the main effect of increasing the cut-off distance rc is to sharpen the liquid-liquid interface and to increase the width of the biphasic coexistence region. Particularly interesting is the presence of a relative minimum in the total density profiles of the symmetrical mixture. This minimum is related with a desorption of the molecules

  1. Liquid-liquid interfacial properties of a symmetrical Lennard-Jones binary mixture.

    PubMed

    Martínez-Ruiz, F J; Moreno-Ventas Bravo, A I; Blas, F J

    2015-09-14

    We determine the interfacial properties of a symmetrical binary mixture of equal-sized spherical Lennard-Jones molecules, σ11 = σ22, with the same dispersive energy between like species, ϵ11 = ϵ22, but different dispersive energies between unlike species low enough to induce phase separation. We use the extensions of the improved version of the inhomogeneous long-range corrections of Janec̆ek [J. Phys. Chem. B 110, 6264 (2006)], presented recently by MacDowell and Blas [J. Chem. Phys. 131, 074705 (2009)] and Martínez-Ruiz et al. [J. Chem. Phys. 141, 184701 (2014)], to deal with the interaction energy and microscopic components of the pressure tensor. We perform Monte Carlo simulations in the canonical ensemble to obtain the interfacial properties of the symmetrical mixture with different cut-off distances rc and in combination with the inhomogeneous long-range corrections. The pressure tensor is obtained using the mechanical (virial) and thermodynamic route. The liquid-liquid interfacial tension is also evaluated using three different procedures, the Irving-Kirkwood method, the difference between the macroscopic components of the pressure tensor, and the test-area methodology. This allows to check the validity of the recent extensions presented to deal with the contributions due to long-range corrections for intermolecular energy and pressure tensor in the case of binary mixtures that exhibit liquid-liquid immiscibility. In addition to the pressure tensor and the surface tension, we also obtain density profiles and coexistence densities and compositions as functions of pressure, at a given temperature. According to our results, the main effect of increasing the cut-off distance rc is to sharpen the liquid-liquid interface and to increase the width of the biphasic coexistence region. Particularly interesting is the presence of a relative minimum in the total density profiles of the symmetrical mixture. This minimum is related with a desorption of the molecules

  2. Noise-immune complex correlation for vasculature imaging based on standard and Jones-matrix optical coherence tomography

    NASA Astrophysics Data System (ADS)

    Makita, Shuichi; Kurokawa, Kazuhiro; Hong, Young-Joo; Li, En; Miura, Masahiro; Yasuno, Yoshiaki

    2016-03-01

    A new optical coherence angiography (OCA) method, called correlation mapping OCA (cmOCA), is presented by using the SNR-corrected complex correlation. An SNR-correction theory for the complex correlation calculation is presented. The method also integrates a motion-artifact-removal method for the sample motion induced decorrelation artifact. The theory is further extended to compute more reliable correlation by using multi- channel OCT systems, such as Jones-matrix OCT. The high contrast vasculature imaging of in vivo human posterior eye has been obtained. Composite imaging of cmOCA and degree of polarization uniformity indicates abnormalities of vasculature and pigmented tissues simultaneously.

  3. Test of classical nucleation theory and mean first-passage time formalism on crystallization in the Lennard-Jones liquid

    SciTech Connect

    Lundrigan, Sarah E. M.; Saika-Voivod, Ivan

    2009-09-14

    We perform molecular dynamics (MD) and Monte Carlo computer simulations to test the ability of the recently developed formalism of mean first-passage time (MFPT) [J. Wedekind, R. Strey, and D. Reguera, J. Chem. Phys. 126, 134103 (2007); J. Wedekind and D. Reguera, J. Phys. Chem. B 112, 11060 (2008)] to characterize crystal nucleation in the Lennard-Jones liquid. We find that the nucleation rate, critical embryo size, Zeldovich factor, attachment rate, and the nucleation barrier profile obtained from MFPT all compare very well to the same quantities calculated using other methods. Furthermore, we find that the nucleation rate obtained directly through MD closely matches the prediction of classical nucleation theory.

  4. Effect of gold nanoparticles on structure and dynamics of binary Lennard-Jones liquid: direct space analysis.

    PubMed

    Separdar, L; Davatolhagh, S

    2013-02-01

    We investigate the static structure and diffusive dynamics of binary Lennard-Jones mixture upon supercooling in the presence of gold nanoparticle within the framework of the mode-coupling theory of the dynamic glass transition in the direct space by means of constant-NVT molecular dynamics simulations. It is found that the presence of gold nanoparticle causes the energy per particle and the pressure of this system to decrease with respect to the bulk binary Lennard-Jones mixture. Furthermore, the presence of nanoparticle has a direct effect on the liquid structure and causes the peaks of the radial distribution functions to become shorter with respect to the bulk binary Lennard-Jones liquid. The dynamics of the liquid at a given density is found to be consistent with the mode-coupling theory (MCT) predictions in a certain range at low temperatures. In accordance with the idealized MCT, the diffusion constants D(T) show a power-law behavior at low temperatures for both types of binary Lennard-Jones (BLJ) particles as well as the gold atoms comprising the nanoparticle. The mode-coupling crossover temperature T(c) is the same for all particle types; however, T(c)=0.4 is reduced with respect to that of the bulk BLJ liquid, and the γ exponent is found to depend on the particle type. The existence of the nanoparticle causes the short-time β-relaxation regime to shorten and the range of validity of the MCT shrinks with respect to the bulk BLJ. It is also found that at intermediate and low temperatures the curves of the mean-squared displacements (MSDs) versus tD(T) fall onto a master curve. The MSDs follow the master curve in an identical time range with the long-time α-relaxation regime of the mode-coupling theory. By obtaining the viscosity, it is observed that the Stokes-Einstein relation remains valid at high and intermediate temperatures but breaks down as the temperatures approach T(c) as a result of the cooperative motion or activated processes. PMID:23496514

  5. Effect of gold nanoparticles on structure and dynamics of binary Lennard-Jones liquid: Direct space analysis

    NASA Astrophysics Data System (ADS)

    Separdar, L.; Davatolhagh, S.

    2013-02-01

    We investigate the static structure and diffusive dynamics of binary Lennard-Jones mixture upon supercooling in the presence of gold nanoparticle within the framework of the mode-coupling theory of the dynamic glass transition in the direct space by means of constant-NVT molecular dynamics simulations. It is found that the presence of gold nanoparticle causes the energy per particle and the pressure of this system to decrease with respect to the bulk binary Lennard-Jones mixture. Furthermore, the presence of nanoparticle has a direct effect on the liquid structure and causes the peaks of the radial distribution functions to become shorter with respect to the bulk binary Lennard-Jones liquid. The dynamics of the liquid at a given density is found to be consistent with the mode-coupling theory (MCT) predictions in a certain range at low temperatures. In accordance with the idealized MCT, the diffusion constants D(T) show a power-law behavior at low temperatures for both types of binary Lennard-Jones (BLJ) particles as well as the gold atoms comprising the nanoparticle. The mode-coupling crossover temperature Tc is the same for all particle types; however, Tc=0.4 is reduced with respect to that of the bulk BLJ liquid, and the γ exponent is found to depend on the particle type. The existence of the nanoparticle causes the short-time β-relaxation regime to shorten and the range of validity of the MCT shrinks with respect to the bulk BLJ. It is also found that at intermediate and low temperatures the curves of the mean-squared displacements (MSDs) versus tD(T) fall onto a master curve. The MSDs follow the master curve in an identical time range with the long-time α-relaxation regime of the mode-coupling theory. By obtaining the viscosity, it is observed that the Stokes-Einstein relation remains valid at high and intermediate temperatures but breaks down as the temperatures approach Tc as a result of the cooperative motion or activated processes.

  6. High-accuracy calculations of sixteen collision integrals for Lennard-Jones (12–6) gases and their interpolation to parameterize neon, argon, and krypton

    SciTech Connect

    Kim, Sun Ung; Monroe, Charles W.

    2014-09-15

    The inverse problem of parameterizing intermolecular potentials given macroscopic transport and thermodynamic data is addressed. Procedures are developed to create arbitrary-precision algorithms for transport collision integrals, using the Lennard-Jones (12–6) potential as an example. Interpolation formulas are produced that compute these collision integrals to four-digit accuracy over the reduced-temperature range 0.3≤T{sup ⁎}≤400, allowing very fast computation. Lennard-Jones parameters for neon, argon, and krypton are determined by simultaneously fitting the observed temperature dependences of their viscosities and second virial coefficients—one of the first times that a thermodynamic and a dynamic property have been used simultaneously for Lennard-Jones parameterization. In addition to matching viscosities and second virial coefficients within the bounds of experimental error, the determined Lennard-Jones parameters are also found to predict the thermal conductivity and self-diffusion coefficient accurately, supporting the value of the Lennard-Jones (12–6) potential for noble-gas transport-property correlation.

  7. Flory-Huggins parameter χ, from binary mixtures of Lennard-Jones particles to block copolymer melts

    NASA Astrophysics Data System (ADS)

    Chremos, Alexandros; Nikoubashman, Arash; Panagiotopoulos, Athanassios Z.

    2014-02-01

    In this contribution, we develop a coarse-graining methodology for mapping specific block copolymer systems to bead-spring particle-based models. We map the constituent Kuhn segments to Lennard-Jones particles, and establish a semi-empirical correlation between the experimentally determined Flory-Huggins parameter χ and the interaction of the model potential. For these purposes, we have performed an extensive set of isobaric-isothermal Monte Carlo simulations of binary mixtures of Lennard-Jones particles with the same size but with asymmetric energetic parameters. The phase behavior of these monomeric mixtures is then extended to chains with finite sizes through theoretical considerations. Such a top-down coarse-graining approach is important from a computational point of view, since many characteristic features of block copolymer systems are on time and length scales which are still inaccessible through fully atomistic simulations. We demonstrate the applicability of our method for generating parameters by reproducing the morphology diagram of a specific diblock copolymer, namely, poly(styrene-b-methyl methacrylate), which has been extensively studied in experiments.

  8. Local shear viscosity of strongly inhomogeneous dense fluids: from the hard-sphere to the Lennard-Jones fluids

    NASA Astrophysics Data System (ADS)

    Hoang, Hai; Galliero, Guillaume

    2013-12-01

    This work aims at providing a tractable approach to model the local shear viscosity of strongly inhomogeneous dense fluids composed of spherical molecules, in which the density variations occur on molecular distance. The proposed scheme, which relies on the local density average model, has been applied to the quasi-hard-sphere, the Week-Chandler-Andersen and the Lennard-Jones fluids. A weight function has been developed to deal with the hard-sphere fluid given the specificities of momentum exchange. To extend the approach to the smoothly repulsive potential, we have taken into account that the non-local contributions to the viscosity due to the interactions of particles separated by a given distance are temperature dependent. Then, using a simple perturbation scheme, the approach is extended to the Lennard-Jones fluids. It is shown that the viscosity profiles of inhomogeneous dense fluids deduced from this approach are consistent with those directly computed by non-equilibrium molecular dynamics simulations.

  9. Phase and interface behaviors in type-I and type-V Lennard-Jones mixtures: theory and simulations.

    PubMed

    Mejía, Andrés; Pàmies, Josep C; Duque, Daniel; Segura, Hugo; Vega, Lourdes F

    2005-07-15

    Density gradient theory (DGT) and molecular-dynamics (MD) simulations have been used to predict subcritical phase and interface behaviors in type-I and type-V equal-size Lennard-Jones mixtures. Type-I mixtures exhibit a continuum critical line connecting their pure critical components, which implies that their subcritical phase equilibria are gas liquid. Type-V mixtures are characterized by two critical lines and a heteroazeotropic line. One of the two critical lines begins at the more volatile pure component critical point up to an upper critical end point and the other one comes from the less volatile pure component critical point ending at a lower critical end point. The heteroazeotropic line connects both critical end points and is characterized by gas-liquid-liquid equilibria. Therefore, subcritical states of this type exhibit gas-liquid and gas-liquid-liquid equilibria. In order to obtain a correct characterization of the phase and interface behaviors of these types of mixtures and to directly compare DGT and MD results, the global phase diagram of equal-size Lennard-Jones mixtures has been used to define the molecular parameters of these mixtures. According to our results, DGT and MD are two complementary methodologies able to obtain a complete and simultaneous prediction of phase equilibria and their interfacial properties. For the type of mixtures analyzed here, both approaches have shown excellent agreement in their phase equilibrium and interface properties in the full concentration range. PMID:16080742

  10. Flory-Huggins parameter χ, from binary mixtures of Lennard-Jones particles to block copolymer melts.

    PubMed

    Chremos, Alexandros; Nikoubashman, Arash; Panagiotopoulos, Athanassios Z

    2014-02-01

    In this contribution, we develop a coarse-graining methodology for mapping specific block copolymer systems to bead-spring particle-based models. We map the constituent Kuhn segments to Lennard-Jones particles, and establish a semi-empirical correlation between the experimentally determined Flory-Huggins parameter χ and the interaction of the model potential. For these purposes, we have performed an extensive set of isobaric-isothermal Monte Carlo simulations of binary mixtures of Lennard-Jones particles with the same size but with asymmetric energetic parameters. The phase behavior of these monomeric mixtures is then extended to chains with finite sizes through theoretical considerations. Such a top-down coarse-graining approach is important from a computational point of view, since many characteristic features of block copolymer systems are on time and length scales which are still inaccessible through fully atomistic simulations. We demonstrate the applicability of our method for generating parameters by reproducing the morphology diagram of a specific diblock copolymer, namely, poly(styrene-b-methyl methacrylate), which has been extensively studied in experiments. PMID:24511981

  11. Flory-Huggins parameter χ, from binary mixtures of Lennard-Jones particles to block copolymer melts

    SciTech Connect

    Chremos, Alexandros; Nikoubashman, Arash Panagiotopoulos, Athanassios Z.

    2014-02-07

    In this contribution, we develop a coarse-graining methodology for mapping specific block copolymer systems to bead-spring particle-based models. We map the constituent Kuhn segments to Lennard-Jones particles, and establish a semi-empirical correlation between the experimentally determined Flory-Huggins parameter χ and the interaction of the model potential. For these purposes, we have performed an extensive set of isobaric–isothermal Monte Carlo simulations of binary mixtures of Lennard-Jones particles with the same size but with asymmetric energetic parameters. The phase behavior of these monomeric mixtures is then extended to chains with finite sizes through theoretical considerations. Such a top-down coarse-graining approach is important from a computational point of view, since many characteristic features of block copolymer systems are on time and length scales which are still inaccessible through fully atomistic simulations. We demonstrate the applicability of our method for generating parameters by reproducing the morphology diagram of a specific diblock copolymer, namely, poly(styrene-b-methyl methacrylate), which has been extensively studied in experiments.

  12. Explicit expression for the Stokes-Einstein relation for pure Lennard-Jones liquids.

    PubMed

    Ohtori, Norikazu; Ishii, Yoshiki

    2015-01-01

    An explicit expression of the Stokes-Einstein (SE) relation in molecular scale has been determined for pure Lennard-Jones (LJ) liquids on the saturated vapor line using a molecular dynamics calculation with the Green-Kubo formula, as Dη(sv)=kTξ(-1)(N/V)(1/3), where D is the self-diffusion coefficient, η(sv) the shear viscosity, k the Boltzmann constant, T the temperature, ξ the constant, and N the particle number included in the system volume V. To this end, the dependence of D and η(sv) on packing fraction, η, and T has been determined so as to complete their scaling equations. The equations for D and η(sv) in these states are m(-1/2)(N/V)(-1/3)(1-η)(4)ε(-1/2)T and m(1/2)(N/V)(2/3)(1-η)(-4)ε(1/2)T(0), respectively, where m and ε are the atomic mass and characteristic parameter of energy used in the LJ potentials, respectively. The equations can well describe the behaviors of D and η(sv) for both the LJ and the real rare-gas liquids. The obtained SE relation justifies the theoretical equation proposed by Eyring and Ree, although the value of ξ is slightly different from that given by them. The difference of the obtained expression from the original SE relation, Dη(sv)=(kT/2π)σ(-1), where σ means the particle size, is the presence of the η(1/3) term, since (N/V)(1/3)=(6/π)(1/3)σ(-1)η(1/3). Since the original SE relation is based on the fluid mechanics for continuum media, allowing the presence of voids in liquids is the origin of the η(1/3) term. Therefore, also from this viewpoint, the present expression is more justifiable in molecular scale than the original SE relation. As a result, the η(1/3) term cancels out the σ dependence from the original SE relation. The present result clearly shows that it is not necessary to attribute the deviation from the original SE relation to any temperature dependence of particle size or to introduce the fractional SE relation for pure LJ liquids. It turned out that the η dependence of both D and

  13. Explicit expression for the Stokes-Einstein relation for pure Lennard-Jones liquids

    NASA Astrophysics Data System (ADS)

    Ohtori, Norikazu; Ishii, Yoshiki

    2015-01-01

    An explicit expression of the Stokes-Einstein (SE) relation in molecular scale has been determined for pure Lennard-Jones (LJ) liquids on the saturated vapor line using a molecular dynamics calculation with the Green-Kubo formula, as D ηsv=k T ξ-1(N/V ) 1 /3 , where D is the self-diffusion coefficient, ηsv the shear viscosity, k the Boltzmann constant, T the temperature, ξ the constant, and N the particle number included in the system volume V . To this end, the dependence of D and ηsv on packing fraction, η , and T has been determined so as to complete their scaling equations. The equations for D and ηsv in these states are m-1 /2(N/V ) -1 /3(1-η ) 4ɛ-1 /2T and m1 /2(N/V ) 2 /3(1-η ) -4ɛ1 /2T0 , respectively, where m and ɛ are the atomic mass and characteristic parameter of energy used in the LJ potentials, respectively. The equations can well describe the behaviors of D and ηsv for both the LJ and the real rare-gas liquids. The obtained SE relation justifies the theoretical equation proposed by Eyring and Ree, although the value of ξ is slightly different from that given by them. The difference of the obtained expression from the original SE relation, D ηsv=(k T /2 π ) σ-1 , where σ means the particle size, is the presence of the η1 /3 term, since (N/V )1 /3=(6/π )1 /3σ-1η1 /3 . Since the original SE relation is based on the fluid mechanics for continuum media, allowing the presence of voids in liquids is the origin of the η1 /3 term. Therefore, also from this viewpoint, the present expression is more justifiable in molecular scale than the original SE relation. As a result, the η1 /3 term cancels out the σ dependence from the original SE relation. The present result clearly shows that it is not necessary to attribute the deviation from the original SE relation to any temperature dependence of particle size or to introduce the fractional SE relation for pure LJ liquids. It turned out that the η dependence of both D and ηsv is similar to

  14. Comparison between Utsu's and Vere-Jones' aftershocks model by means of a computer simulation based on the acceptance-rejection sampling of von Neumann

    NASA Astrophysics Data System (ADS)

    Reyes, J.; Morales-Esteban, A.; González, E.; Martínez-Álvarez, F.

    2016-07-01

    In this research, a new algorithm for generating a stochastic earthquake catalog is presented. The algorithm is based on the acceptance-rejection sampling of von Neumann. The result is a computer simulation of earthquakes based on the calculated statistical properties of each zone. Vere-Jones states that an earthquake sequence can be modeled as a series of random events. This is the model used in the proposed simulation. Contrariwise, Utsu indicates that the mainshocks are special geophysical events. The algorithm has been applied to zones of Chile, China, Spain, Japan, and the USA. This allows classifying the zones according to Vere-Jones' or Utsu's model. The results have been quantified relating the mainshock with the largest aftershock within the next 5 days (which has been named as Bath event). The results show that some zones fit Utsu's model and others Vere-Jones'. Finally, the fraction of seismic events that satisfy certain properties of magnitude and occurrence is analyzed.

  15. Ground-water pumpage and water-level declines in the Peedee and Black Creek aquifers in Onslow and Jones counties, North Carolina, 1900-86

    USGS Publications Warehouse

    Lyke, W.L.; Brockman, A.R.

    1990-01-01

    Two aquifers in sediments of Cretaceous age, The Peedee and Black Creek aquifers, have become a major source of freshwater in Onslow and Jones Counties in North Carolina since about 1960. Prior to 1960, most water systems in this area withdrew water from younger sand or limestone beds that overlie the Peedee and Black Creek aquifers. Water-quality and economic considerations related to the treatment of water from these shallower aquifers led to increased use of the Peedee and Black Creek aquifers. Water withdrawals from the Black Creek and Peedee aquifers were about 10,000 gallons per day in 1933. By 1986, total withdrawals were about 7.8 million gallons per day, about 90 percent of which was supplied from the Black Creek aquifer. As a result of these withdrawals, ground-water levels have declined throughout Onslow and Jones Counties. The average rate of decline in static water levels in the Peedee aquifer is about 0.6 feet per year in central Jones County and about 1.4 feet per year in northern Onslow County. Rates of water level decline in the Black Creek aquifer average about 8.3 feet per year in Jones County to about 12 feet per year in northern Onslow County. Water levels in the Peedee aquifer have declined as much as 40 feet in Jones County and 80 feet in northern Onslow County since about 1900. During the same period, water levels in the Black Creek aquifer have declined as much as 120 and 160 feet in Jones and northern Onslow Counties, respectively.

  16. Theoretical study of thermal conductivities of various gas mixtures through the generalized Lennard-Jones interaction potential for application in gas-discharge lasers

    NASA Astrophysics Data System (ADS)

    Temelkov, K. A.; Slaveeva, S. I.; Fedchenko, Yu I.

    2016-03-01

    Thermal conductivities of helium, neon, bromine, and hydrogen are calculated on the basis of the (12-6) Lennard-Jones interaction approximation. Where necessary for a more precise approximation, a generalized (n-m) Lennard-Jones interaction potential is used. Thermal conductivities of binary gas systems are calculated and compared through two different empirical methods for the case of gas discharges in He, Ne, and Ne-He mixtures with small admixtures of bromine and hydrogen. A new simple method is proposed for the thermal conductivity determination for the 3- and 4-component gas mixtures of our interest.

  17. Health-hazard evaluation report HETA 91-213-2123, G. T. Jones Tire and Battery Distributing Inc. , Birmingham, Alabama

    SciTech Connect

    Gittleman, J.; Estacio, P.; O'Brien, D.; Montopoli, M.

    1991-06-01

    In response to a request for technical assistance from the Alabama Health Department, possible hazardous working conditions at the G.T. Jones Tire and Battery Distributing Company (SIC-5093), Birmingham, Alabama were evaluated. The company employed 15 persons in battery breaking and recycling. Twelve of the workers had blood lead (7439921) levels over 60 micrograms/deciliter (microg/dl) and the average of the last three blood levels exceeded 50microg/dl for 13 of the employees. Blood lead levels greater than 60 were associated with biochemical evidence of impaired heme synthesis and impaired renal function. Fourteen workers had elevated zinc protoporphyrin (ZPP) levels over 100microg/dl consistent with moderate lead poisoning. Three had ZPPs over 600 microg/dl, consistent with severe lead poisoning. The authors conclude that a health hazard existed from overexposure to lead. The authors recommend measures to reduce exposures.

  18. A simple water model in the presence of inert Lennard-Jones obstacles II: the hydrophobic effect

    NASA Astrophysics Data System (ADS)

    Kurtjak, Mario; Urbic, Tomaz

    2015-04-01

    Using Monte Carlo computer simulations, hydrophobic effect for a non-polar particle with the diameter of a water molecule was studied in water, confined within a disordered matrix. Freely mobile two-dimensional Mercedes-Benz water was put in a disordered, but fixed, matrix of Lennard-Jones disks. Influence of temperature and matrix properties on the thermodynamic quantities of a non-polar solute solvation was studied. The hydrophobic effect is changed by the presence of the obstacles. Smaller matrix particles change the solute-water structure and thermodynamics drastically, as it was also observed for the properties of pure confined water. The study is bringing new scientific important observations in understanding the role of hydrophobic forces under confinement.

  19. Crystal growth kinetics in Lennard-Jones and Weeks-Chandler-Andersen systems along the solid-liquid coexistence line

    NASA Astrophysics Data System (ADS)

    Benjamin, Ronald; Horbach, Jürgen

    2015-07-01

    Kinetics of crystal-growth is investigated along the solid-liquid coexistence line for the (100), (110), and (111) orientations of the Lennard-Jones (LJ) and Weeks-Chandler-Andersen (WCA) fcc crystal-liquid interface, using non-equilibrium molecular dynamics simulations. A slowing down of the growth kinetics along the coexistence line is observed, which is due to the decrease of the melting enthalpy with increasing coexistence temperature and pressure. Other quantities such as the melting pressure and liquid self-diffusion coefficient have a comparatively lesser impact on the kinetic growth coefficient. Growth kinetics of the LJ and WCA potentials become similar at large values of the melting temperature and pressure, when both resemble a purely repulsive soft-sphere potential. Classical models of crystallization from the melt are in reasonable qualitative agreement with our simulation data. Finally, several one-phase empirical melting/freezing rules are studied with respect to their validity along the coexistence line.

  20. Noise-immune complex correlation for optical coherence angiography based on standard and Jones matrix optical coherence tomography

    PubMed Central

    Makita, Shuichi; Kurokawa, Kazuhiro; Hong, Young-Joo; Miura, Masahiro; Yasuno, Yoshiaki

    2016-01-01

    This paper describes a complex correlation mapping algorithm for optical coherence angiography (cmOCA). The proposed algorithm avoids the signal-to-noise ratio dependence and exhibits low noise in vasculature imaging. The complex correlation coefficient of the signals, rather than that of the measured data are estimated, and two-step averaging is introduced. Algorithms of motion artifact removal based on non perfusing tissue detection using correlation are developed. The algorithms are implemented with Jones-matrix OCT. Simultaneous imaging of pigmented tissue and vasculature is also achieved using degree of polarization uniformity imaging with cmOCA. An application of cmOCA to in vivo posterior human eyes is presented to demonstrate that high-contrast images of patients’ eyes can be obtained. PMID:27446673

  1. Diffusion in Lennard-Jones fluids using dual control volume grand canonical molecular dynamics simulation (DCV-GCMD)

    SciTech Connect

    Heffelfinger, G.S. ); Swol, F.v. )

    1994-05-15

    A new approach to calculating diffusivities, both transport as well as equilibrium, is presented. The dual control volume grand canonical molecular dynamics (or DCV-GCMD) method employs two local control volumes for chemical potential control via particle creation/destruction as in grand canonical Monte Carlo (GCMC) simulations. The control volumes are inserted in a standard [ital NVT] molecular dynamics simulation yielding a simulation with stochastic chemical potential control that may be thought of as a hybrid GCMC-MD approach. The geometrical control of the chemical potential enables a steady state chemical potential gradient to be established in the system. By measuring the density profile and flux, Fick's law is used to determine the diffusivity. An example calculation is presented for a simple Lennard-Jones system.

  2. Cluster growth mechanisms in Lennard-Jones fluids: A comparison between molecular dynamics and Brownian dynamics simulations

    NASA Astrophysics Data System (ADS)

    Jung, Jiyun; Lee, Jumin; Kim, Jun Soo

    2015-03-01

    We present a simulation study on the mechanisms of a phase separation in dilute fluids of Lennard-Jones (LJ) particles as a model of self-interacting molecules. Molecular dynamics (MD) and Brownian dynamics (BD) simulations of the LJ fluids are employed to model the condensation of a liquid droplet in the vapor phase and the mesoscopic aggregation in the solution phase, respectively. With emphasis on the cluster growth at late times well beyond the nucleation stage, we find that the growth mechanisms can be qualitatively different: cluster diffusion and coalescence in the MD simulations and Ostwald ripening in the BD simulations. We also show that the rates of the cluster growth have distinct scaling behaviors during cluster growth. This work suggests that in the solution phase the random Brownian nature of the solute dynamics may lead to the Ostwald ripening that is qualitatively different from the cluster coalescence in the vapor phase.

  3. Investigation of some well known bulk fluid regularities for Lennard-Jones confined fluid in nanoslit pore

    NASA Astrophysics Data System (ADS)

    Keshavarzi, Ezat; Namdari, Fatemeh; Jildani, Sediqeh Rabiei

    2016-04-01

    The modified fundamental measure theory has been employed to investigate some well known regularities of bulk fluid for the Lennard-Jones fluid confined in nanoslit pore. The regularities investigated include common compression point, common bulk modulus point, Tait-Murnaghan equation, and the linear regularity between pressure and temperature for each isochore. All these regularities have been investigated for two different components of pressure for confined fluid. Our results show that the common compression and common bulk modulus point remain valid for fluids confined in nanoslit pores of different sizes and with different wall-fluid potentials. The density of the common compression and common bulk modulus point are different from corresponding ones for the bulk fluid. Our observations also show that the Tait-Murnaghan equation and pressure-temperature linear regularity also hold for confined fluid. The sign of the intercept of pressure-temperature regularity is determined by the difference between attraction and repulsion terms in the compressibility factor.

  4. A molecular simulation study of freezing/melting phenomena for Lennard-Jones methane in cylindrical nanoscale pores

    SciTech Connect

    Maddox, M.W.; Gubbins, K.E.

    1997-12-01

    A combination of grand canonical Monte Carlo and molecular dynamics simulation techniques are used to study the freezing and melting of Lennard-Jones methane in several different cylindrical pores. Two different types of pore wall are considered; a strongly attractive wall, and a weakly attractive wall, each with pore diameters in the range 1.5{endash}3.5 nm. Freezing point depression is observed in the case of the weakly attractive pores, in agreement with several experimental studies. Freezing point elevation is observed at the walls of the strongly attractive pore, but freezing point depression occurs at the center of such pores, due to geometrical constraints. {copyright} {ital 1997 American Institute of Physics.}

  5. Clinical course of light-chain smouldering multiple myeloma (idiopathic Bence Jones proteinuria): a retrospective cohort study

    PubMed Central

    Kyle, Robert A; Larson, Dirk R; Therneau, Terry M; Dispenzieri, Angela; Melton, L Joseph; Benson, Joanne T; Kumar, Shaji; Rajkumar, S Vincent

    2014-01-01

    Summary Background Bence Jones proteinuria is a disorder that is defined by the excretion of monoclonal light-chain protein. About 15–20% of patients with multiple myeloma secrete monoclonal light chains only, without expression of the normal immunoglobulin heavy chain, which constitutes light-chain multiple myeloma. The definition, prevalence, and progression of these premalignant phases of light-chain multiple myeloma have not been fully characterised. We aimed to identify a subset of patients with idiopathic Bence Jones proteinuria who had a high risk of progression to light-chain multiple myeloma analogous to that seen in patients with smouldering multiple myeloma. Methods In this retrospective cohort study, we studied all patients seen at the Mayo Clinic (Rochester, MN, USA) within 30 days of diagnosis of idiopathic Bence Jones proteinuria between Jan 1, 1960, and June 30, 2004. Inclusion criteria were monoclonal light chain in the urine (≥0·2 g/24 h), absence of intact monoclonal immunoglobulin (M protein) in the serum, and no evidence of multiple myeloma, light-chain amyloidosis, or other related plasma-cell proliferative disorders. The primary endpoint was progression to symptomatic multiple myeloma or light-chain amyloidosis. We examined the cumulative probability of progression and the association of potential risk factors on progression rates to identify patients with a high risk of progression to multiple myeloma or light-chain amyloidosis. Findings We identified 101 patients with idiopathic Bence Jones proteinuria. During 901 total person-years of follow-up, 27 (27%) patients developed multiple myeloma and seven (7%) developed light-chain amyloidosis. The major risk factors for progression were amount of urinary excretion of M protein per 24 h, proportion of bone marrow plasma cells, presence of a markedly abnormal free-light-chain ratio (<0·01 or >100), and reduction of all three uninvolved immunoglobulins. Based on the risk of progression

  6. Jammed Particle Configurations and Dynamics in High-Density Lennard-Jones Binary Mixtures in Two Dimensions

    NASA Astrophysics Data System (ADS)

    Shiba, H.; Onuki, A.

    We examine the changeover in the particle configurations and the dynamics in dense Lennard-Jones binary mixtures composed of small and large particles. By varying the composition at a low temperature, we realize crystal with defects, polycrystal with small grains, and glass with various degrees of disorder. In particular, we show configurations where small crystalline regions composed of the majority species are enclosed by percolated amorphous layers composed of the two species. We visualize the dynamics of configuration changes using the method of bond breakage and following the particle displacements. In quiescent jammed states, the dynamics is severely slowed down and is highly heterogeneous at any compositions. We apply shear flow by relative motions of boundary layers. Then plastic deformations multiply occur in relatively fragile regions, growing into large-scale shear bands where the strain is highly localized. Such bands appear on short time scales and evolve on l ong time scales with finite lifetimes.

  7. Sex Differences in Left-Handedness Are Also Evident in Scandinavia and in Twins: Comment on Papadatou-Pastou, Martin, Munafo, and Jones (2008)

    ERIC Educational Resources Information Center

    Vuoksimaa, Eero; Kaprio, Jaakko

    2010-01-01

    The lack of sex difference in left-handedness in Scandinavian countries reported by Papadatou-Pastou, Martin, Munafo, and Jones (2008) is questioned. We investigated the sex difference in left-handedness in two Finnish, one Norwegian, and one Swedish population-based sample not included in the Papadatou-Pastou et al. (2008) meta-analysis. The…

  8. Comment on Cross, Fine, Jones, and Walsh (2012): Do Mental Health Professionals Who Serve on/with Child Advocacy Centers Experience Role Conflict?

    ERIC Educational Resources Information Center

    Friend, Colleen

    2012-01-01

    Cross, Fine, Jones, and Walsh's (2012) article "Mental Health Professionals in Children's Advocacy Centers: Is There Role Conflict?" challenges two recent publications' criticisms that child advocacy centers create role conflict for mental health professionals and explains how child advocacy centers actually work, describing the different roles…

  9. Reading Research on Core Values, Christian Ethos and School Transformation at England's Most Improved Academy: A Reply to Bragg, Allington, Simmons and Jones

    ERIC Educational Resources Information Center

    Pike, Mark A.

    2011-01-01

    This article presents the author's reply to the comments of Bragg, Allington, Simmons and Jones to his article "Transaction and transformation at Trinity" (Pike, 2010) wherein he reported a case study of Trinity Academy, which serves a former mining community and social priority area near Doncaster in South Yorkshire. In 2008, just before the…

  10. Close Encounter With a Carolina Bay. Jones Lake State Park: An Environmental Education Learning Experience Designed for Grades 6-8.

    ERIC Educational Resources Information Center

    Helms, J. Christopher; Corbett, Robert J.

    This activity guide, developed to provide hands-on environmental education activities geared to Jones Lake State Park in North Carolina, is targeted for grades 6, 7, and 8 and meets curriculum objectives in the standard course of study established by the North Carolina Department of Public Instruction. Three types of activities are included:…

  11. ["It is a new kind of diaspora ..." Some notes on the politics of psychanalysts emigration, according to E. Jones's correspondence with Anna Freud].

    PubMed

    Steiner, R

    1988-01-01

    This paper is an attempt to describe the forced emigration of the Jewish and non Jewish German and Austrian psychoanalysts, to Great Britain and to America and other countries, during the nazi persecution started in Germany in 1933. The paper is mainly based on the unpublished correspondence between A. Freud and E. Jones and other documents. The paper deals with the two major waves of forced emigration from Berlin in 1933-1934 and from Vienna in 1938 and illustrates E. Jones's and A. Freud's attempts to organize and direct the emigration and all the problems, difficulties and political decisions connected with it. There were objective difficulties due to the economical and social situation of Great Britain and America at that time. Yet there were also the difficulties related to the internal conflicts of schools and personalities of the various national Societies belonging to the International Psychoanalytical Association chaired by Jones. Using some details of the correspondence, the paper tries to show the differences in tactics to deal with very delicate and complex issues, adopted by E. Jones and A. Freud at times, especially for what concerned the attempt to save psychoanalysis as an Institution in Germany. To illustrate the difficulties related to the acceptance of some psychoanalysts coming from Berlin or from Vienna, the paper focuses on W. Reich's episode as it was dealt with in the correspondence between A. Freud and E. Jones, and finally on the problems created in the British Psychoanalytical Society, by the emigration of S. Freud and his daughter to Great Britain. PMID:11640263

  12. Examining the Effects of Stiffness and Mass Difference on the Thermal Interface Conductance Between Lennard-Jones Solids

    PubMed Central

    Gordiz, Kiarash; Henry, Asegun

    2015-01-01

    To date, the established methods that describe thermal interface conductance (TIC) and include mode-level dependence have not included anharmonicity. The current intuition is therefore based on the behavior in the harmonic limit, whereby the extent of overlap in the bulk phonon density of states (DoS) (e.g., frequency overlap) dictates the TIC and more frequency overlap leads to higher TIC. Here, we study over 2,000 interfaces described by the Lennard-Jones potential using equilibrium molecular dynamics simulations, whereby we systematically change the mass and stiffness of each side. We show that the trends in TIC do not generally follow that of the bulk phonon DoS overlap, but instead more closely follow the vibrational power spectrum overlap for the interfacial atoms. We then identify the frequency overlap in the interfacial power spectra as an improved descriptor for understanding the qualitative trends in TIC. Although improved, the results show that the basic intuition of frequency overlap is still insufficient to explain all of the features, as the remaining variations are shown to arise from anharmonicity, which is a critical effect to include in interface calculations above cryogenic temperatures. PMID:26678793

  13. Characterization, expression and function analysis of DAX1 gene of scallop ( Chlamys farreri jones and preston 1904) during its gametogenesis

    NASA Astrophysics Data System (ADS)

    Li, Hailong; Liu, Jianguo; Huang, Xiaoting; Wang, Dan; Zhang, Zhifeng

    2014-08-01

    DAX1, a member of nuclear receptor superfamily, has a function in the sex determination and gonadal differentiation of several vertebrate species. However, little information about DAX1 of invertebrates is available. Here we cloned a homolog of scallop ( Chlamys farreri Jones and Preston 1904) dax1, Cf-dax1, and determined its expression characteristics at mRNA and protein levels. The cDNA sequence of Cf-dax1 was 2093 bp in length, including 1404 bp open reading frame (ORF) encoding 467 amino acids. Unlike those of vertebrates, no conserved LXXLL-related motif was found in the putative DNA binding region of Cf-DAX1. Fluorescence in situ hybridization showed that Cf-dax1 located on the short arm of a pair of subtelocentric chromosomes. Tissue distribution analysis using semi-quantitative RT-PCR revealed that Cf-dax1 expressed widely in adult scallop tissues, with the highest expression level found in adductor muscle, moderate level in mantle, gill and testis, and low level in kidney, ovary and hepatopancreas. The result of quantitative real-time PCR indicated that the expression of Cf-dax1 was significantly higher ( P<0.05) in testis than in ovary at the same stage, showing a sex-dimorphic expression pattern. Furthermore, immunohistochemical detection found that Cf-DAX1 mainly located in spermatogonia and spermatocytes of testis and in oogonia and oocytes of ovary, implying that DAX1 may involve in gametogenesis of bivalves.

  14. Examining the Effects of Stiffness and Mass Difference on the Thermal Interface Conductance Between Lennard-Jones Solids

    NASA Astrophysics Data System (ADS)

    Gordiz, Kiarash; Henry, Asegun

    2015-12-01

    To date, the established methods that describe thermal interface conductance (TIC) and include mode-level dependence have not included anharmonicity. The current intuition is therefore based on the behavior in the harmonic limit, whereby the extent of overlap in the bulk phonon density of states (DoS) (e.g., frequency overlap) dictates the TIC and more frequency overlap leads to higher TIC. Here, we study over 2,000 interfaces described by the Lennard-Jones potential using equilibrium molecular dynamics simulations, whereby we systematically change the mass and stiffness of each side. We show that the trends in TIC do not generally follow that of the bulk phonon DoS overlap, but instead more closely follow the vibrational power spectrum overlap for the interfacial atoms. We then identify the frequency overlap in the interfacial power spectra as an improved descriptor for understanding the qualitative trends in TIC. Although improved, the results show that the basic intuition of frequency overlap is still insufficient to explain all of the features, as the remaining variations are shown to arise from anharmonicity, which is a critical effect to include in interface calculations above cryogenic temperatures.

  15. Mapping the phase diagram for neon to a quantum Lennard-Jones fluid using Gibbs ensemble simulations.

    PubMed

    Georgescu, Ionuţ; Brown, Sandra E; Mandelshtam, Vladimir A

    2013-04-01

    In order to address the issue of whether neon liquid in coexistence with its gas phase can be mapped to a quantum Lennard-Jones (LJ) fluid, we perform a series of simulations using Gibbs ensemble Monte Carlo for a range of de Boer quantum parameters Λ=ℏ/(σ√(mε)). The quantum effects are incorporated by implementing the variational gaussian wavepacket method, which provides an efficient numerical framework for estimating the quantum density at thermal equilibrium. The computed data for the LJ liquid is used to produce its phase diagram as a function of the quantum parameter, 0.065 ≤ Λ ≤ 0.11. These data are then used to fit the experimental phase diagram for neon liquid. The resulting parameters, ε = 35.68 ± 0.03 K and σ = 2.7616 ± 0.0005 Å (Λ = 0.0940), of the LJ pair potential are optimized to best represent liquid neon in coexistence with its gas phase for a range of physically relevant temperatures. This multi-temperature approach towards fitting and assessing a pair-potential is much more consistent than merely fitting a single data point, such as a melting temperature or a second virial coefficient. PMID:23574239

  16. Lessons from the past: twenty-five years experience with the Cross-Jones caged disc prosthesis.

    PubMed

    Kovacs, G S; Felkai, B; Toszegi, A M

    1993-11-01

    One hundred and twenty-one patients who received 145 Cross-Jones prostheses between 1967 and 1973 were followed for over 20 years. Thirty-six patients had undergone single aortic valve replacement, receiving an uncovered prosthesis (Group A), while 83 of the 85 patients in Group B undergoing isolated mitral or combined mitral and aortic and/or tricuspid replacements received a cloth-covered prosthesis in the mitral and/or tricuspid position. There were no mechanical failures in Group A, and three patients are alive 24 years after their operations. The seat was smooth in all prostheses inspected at autopsy and the disc was not worn even 15-18 years after surgery. The overall incidence of thromboembolism in this group was 3.56%/pty, of which 2.13%/pty were fatal. All operative offvivors with cloth-covered valves developed mechanical dysfunction leading to death or requiring reoperation within ten years. The cloth cover was invariably disrupted and the disc hitting this rough surface had become worn, with significant diminution in their diameters in all valves recovered during reoperation or at autopsy. In seven patients, the disc escaped from a mitral prosthesis causing immediate death, while one patient survived a tricuspid disc escape for over one month and was then successfully reoperated. The overall incidence of thromboembolism in Group B was 23.4%/pty, of which 11.7%/pty were fatal. PMID:7719509

  17. Solid-solid structural transformations in Lennard-Jones clusters: accurate simulations versus the harmonic superposition approximation.

    PubMed

    Sharapov, Vladimir A; Mandelshtam, Vladimir A

    2007-10-18

    We consider systems undergoing very-low-temperature solid-solid transitions associated with minima of similar energy but different symmetry, and separated by a high potential barrier. In such cases the well-known "broken-ergodicity" problem is often difficult to overcome, even using the most advanced Monte Carlo (MC) techniques, including the replica exchange method (REM). The methodology that we develop in this paper is suitable for the above specified cases and is numerically accurate and efficient. It is based on a new MC move implemented within the REM framework, in which trial points are generated analytically using an auxiliary harmonic superposition system that mimics well the true system at low temperatures. Due to the new move, the low-temperature random walks are able to frequently switch the relevant potential energy funnels leading to an efficient sampling. Numerically accurate results are obtained for a number of Lennard-Jones clusters, including those that have so far been treated only by the harmonic superposition approximation (HSA). The latter is believed to provide good estimates for low-temperature equilibrium properties but is manifestly uncontrollable and is difficult to validate. The present results provide a good test for the HSA and demonstrate its reliability, particularly for estimation of the solid-solid transition temperatures in most cases considered. PMID:17685597

  18. Effect of the computational domain size and shape on the self-diffusion coefficient in a Lennard-Jones liquid

    NASA Astrophysics Data System (ADS)

    Kikugawa, Gota; Ando, Shotaro; Suzuki, Jo; Naruke, Yoichi; Nakano, Takeo; Ohara, Taku

    2015-01-01

    In the present study, molecular dynamics (MD) simulations on the monatomic Lennard-Jones liquid in a periodic boundary system were performed in order to elucidate the effect of the computational domain size and shape on the self-diffusion coefficient measured by the system. So far, the system size dependence in cubic computational domains has been intensively investigated and these studies showed that the diffusion coefficient depends linearly on the inverse of the system size, which is theoretically predicted based on the hydrodynamic interaction. We examined the system size effect not only in the cubic cell systems but also in rectangular cell systems which were created by changing one side length of the cubic cell with the system density kept constant. As a result, the diffusion coefficient in the direction perpendicular to the long side of the rectangular cell significantly increases more or less linearly with the side length. On the other hand, the diffusion coefficient in the direction along the long side is almost constant or slightly decreases. Consequently, anisotropy of the diffusion coefficient emerges in a rectangular cell with periodic boundary conditions even in a bulk liquid simulation. This unexpected result is of critical importance because rectangular fluid systems confined in nanospace, which are present in realistic nanoscale technologies, have been widely studied in recent MD simulations. In order to elucidate the underlying mechanism for this serious system shape effect on the diffusion property, the correlation structures of particle velocities were examined.

  19. A density functional theory study of magneto-electric Jones birefringence of noble gases, furan homologues, and mono-substituted benzenes

    SciTech Connect

    Fahleson, Tobias; Norman, Patrick; Coriani, Sonia; Rizzo, Antonio; Rikken, Geert L. J. A.

    2013-11-21

    We report on the results of a systematic ab initio study of the Jones birefringence of noble gases, of furan homologues, and of monosubstituted benzenes, in the gas phase, with the aim of analyzing the behavior and the trends within a list of systems of varying size and complexity, and of identifying candidates for a combined experimental/theoretical study of the effect. We resort here to analytic linear and nonlinear response functions in the framework of time-dependent density functional theory. A correlation is made between the observable (the Jones constant) and the atomic radius for noble gases, or the permanent electric dipole and a structure/chemical reactivity descriptor as the para Hammett constant for substituted benzenes.

  20. Coexistence and interfacial properties of a triangle-well mimicking the Lennard-Jones fluid and a comparison with noble gases.

    PubMed

    Bárcenas, M; Reyes, Y; Romero-Martínez, A; Odriozola, G; Orea, P

    2015-02-21

    Coexistence and interfacial properties of a triangle-well (TW) fluid are obtained with the aim of mimicking the Lennard-Jones (LJ) potential and approach the properties of noble gases. For this purpose, the scope of the TW is varied to match vapor-liquid densities and surface tension. Surface tension and coexistence curves of TW systems with different ranges were calculated with replica exchange Monte Carlo and compared to those data previously reported in the literature for truncated and shifted (STS), truncated (ST), and full Lennard-Jones (full-LJ) potentials. We observed that the scope of the TW potential must be increased to approach the STS, ST, and full-LJ properties. In spite of the simplicity of TW expression, a remarkable agreement is found. Furthermore, the variable scope of the TW allows for a good match of the experimental data of argon and xenon. PMID:25702023

  1. Distance fluctuation of a single molecule in Lennard-Jones liquid based on generalized Langevin equation and mode coupling theory

    NASA Astrophysics Data System (ADS)

    Li, Ping; Dong, Yunhong; Zhao, Nanrong; Hou, Zhonghuai

    2014-04-01

    Distance fluctuation of a single molecule, modeled as an idealized bead-spring chain, dissolved in a Lennard-Jones liquid is studied by using a multidimensional generalized Langevin equation, where the friction kernel ζ(t) is calculated from the kinetic mode coupling theory (MCT). Temporal behavior of the distance autocorrelation function shows three typical regimes of time dependence, starting with a constant, followed by a power law of t-α, and finally an exponential decay. Particular attentions are paid to the time span of the power law regime, which corresponds to anomalous subdiffusion behavior, and the MCT framework enables us to investigate thoroughly how this regime depends on microscopic details such as the bead-to-solvent mass ratio MR, chain spring frequency ω, and the chain length N. Interestingly, the exponent α is robust to be 1/2 against the change of these parameters, although the friction kernel ζ(t) shows nontrivial dependence on time. In addition, we find that the starting time of the power-law region t1 scales with Γ-1, with Γ = 4ω2/ζ0 where ζ0 is the zero-frequency friction which decreases rapidly with increasing bead mass. On the other hand, the ending time t2 is not sensitive to varying ω or ζ0, but it increases with N rapidly before it reaches a constant for N larger than some threshold value. Our work may provide a unified strategy starting from the microscopic level to understand the anomalous subdiffusive behavior regarding large scale conformational change of polymers or proteins.

  2. The renal and hepatic distribution of Bence Jones proteins depends on glycosylation: a scintigraphic study in rats.

    PubMed

    Prado, M J; Nicastri, A L; Costa, P L; Rockman, T; Tersariol, I L; Nader, H B; Barros, R T; Prado, E B

    1997-07-01

    The aim of the present study was to evaluate renal and liver distribution of two monoclonal immunoglobulin light chains. The chains were purified individually from the urine of patients with multiple myeloma and characterized as lambda light chains with a molecular mass of 28 kDa. They were named BJg (high amount of galactose residues exposed) and BJs (sialic acid residues exposed) on the basis of carbohydrate content. A scintigraphic study was performed on male Wistar rats weighing 250 g for 60 min after i.v. administration of 1 mg of each protein (7.4 MBq), as the intact proteins and also after carbohydrate oxidation. Images were obtained with a Siemens gamma camera with a high-resolution collimator and processed with a MicroDelta system. Hepatic and renal distribution were established and are reported as percent of injected dose. Liver uptake of BJg was significantly higher than liver uptake of BJs (94.3 vs 81.4%) (P < 0.05). This contributed to its greater removal from the intravascular compartment, and consequently lower kidney accumulation of BJg in comparison to BJs (5.7 vs 18.6%) (P < 0.05). After carbohydrate oxidation, there was a decrease in hepatic accumulation of both proteins and consequently a higher renal overload. The tissue distribution of periodate-treated BJg was similar to that of native BJs: 82.7 vs 81.4% in the liver and 17.3 vs 18.6% in the kidneys. These observations indicate the important role of sugar residues of Bence Jones proteins for their recognition by specific membrane receptors, which leads to differential tissue accumulation and possible toxicity. PMID:9361711

  3. Holocene environmental and parasequence development of the St. Jones Estuary, Delaware (USA): Foraminiferal proxies of natural climatic and anthropogenic change

    USGS Publications Warehouse

    Leorri, E.; Martin, R.; McLaughlin, P.

    2006-01-01

    The benthic foraminiferal record of marshes located along western Delaware Bay (St. Jones Estuary, USA) reflects the response of estuaries to sea-level and paleoclimate change during the Holocene. System tracts are recognized and within them parasequences based on sedimentological and foraminiferal assemblages identification. The parasequences defined by foraminiferal assemblages appear correlative with rapid Holocene climate changes that are of worldwide significance: 6000-5000, 4200-3800, 3500-2500, 1200-1000, and 600??cal years BP. Following postglacial sea-level rise, modern subestuaries and marshes in the region began to develop between 6000 and 4000??years BP, depending on their proximity to the mouth of Delaware Bay and coastal geomorphology. Initial sediments were fluvial in origin, with freshwater marshes established around 4000??years BP. The subsequent sea-level transgression occurred sufficiently slowly that freshwater marshes alternated with salt marshes at the same sites to around 3000??years BP. Locally another two transgressions are identified at 1800 and 1000??years BP respectively. Marine influence increased in the estuaries until 600??years BP (Little Ice Age), when regression occurred. Sea-level began to rise again during the mid-19th Century at the end of the Little Ice Age, when marshes became established. The presence of a sand lens in the upper and middle estuary and the reduction in the number of tests in the top samples in cores from the same area also suggest an anthropogenic influence. The estuary infill resulted in a sharp transgressive sequence, represented by salt marsh foraminiferal assemblages in the upper part of the cores. The increase in marsh foraminifera in both areas suggests an increase in marine influence that might be due to the transgression beginning at the end of the Little Ice Age about 150-180??years ago coupled with anthropogenic straightening of the channel in 1913. ?? 2006 Elsevier B.V. All rights reserved.

  4. Long-range Lennard-Jones and electrostatic interactions in interfaces: application of the isotropic periodic sum method.

    PubMed

    Klauda, Jeffery B; Wu, Xiongwu; Pastor, Richard W; Brooks, Bernard R

    2007-05-01

    Molecular dynamics (MD) simulations of heptane/vapor, hexadecane/vapor, water/vapor, hexadecane/water, and dipalmitoylphosphatidylcholine (DPPC) bilayers and monolayers are analyzed to determine the accuracy of treating long-range interactions in interfaces with the isotropic periodic sum (IPS) method. The method and cutoff (rc) dependences of surface tensions, density profiles, water dipole orientation, and electrostatic potential profiles are used as metrics. The water/vapor, heptane/vapor, and hexadecane/vapor interfaces are accurately and efficiently calculated with 2D IPS (rc=10 A). It is demonstrated that 3D IPS is not practical for any of the interfacial systems studied. However, the hybrid method PME/IPS [Particle Mesh Ewald for electrostatics and 3D IPS for Lennard-Jones (LJ) interactions] provides an efficient way to include both types of long-range forces in simulations of large liquid/vacuum and all liquid/liquid interfaces, including lipid monolayers and bilayers. A previously published pressure-based long-range LJ correction yields results similar to those of PME/IPS for liquid/liquid interfaces. The contributions to surface tension of LJ terms arising from interactions beyond 10 A range from 13 dyn/cm for the hexadecane/vapor interface to approximately 3 dyn/cm for hexadecane/water and DPPC bilayers and monolayers. Surface tensions of alkane/vapor, hexadecane/water, and DPPC monolayers based on the CHARMM lipid force fields agree very well with experiment, whereas surface tensions of the TIP3P and TIP4P-Ew water models underestimate experiment by 16 and 11 dyn/cm, respectively. Dipole potential drops (DeltaPsi) are less sensitive to long-range LJ interactions than surface tensions. However, DeltaPsi for the DPPC bilayer (845+/-3 mV proceeding from water to lipid) and water (547+/-2 mV for TIP4P-Ew and 521+/-3 mV for TIP3P) overestimate experiment by factors of 3 and 5, respectively, and represent expected deficiencies in nonpolarizable force fields

  5. Molecular dynamics simulation for the cluster formation process of Lennard-Jones particles: Magic numbers and characteristic features

    NASA Astrophysics Data System (ADS)

    Ikeshoji, Tamio; Hafskjold, Bjørn; Hashi, Yuichi; Kawazoe, Yoshiyuki

    1996-09-01

    Cluster formation of Lennard-Jones particles (65 536 atoms in a unit cell with an overall number density equal to 0.0149) was simulated by molecular dynamics. The temperature was set to decrease linearly with time by various thermostats, starting from a gas state temperature and ending at zero temperature. With the Nosé-Hoover thermostat, it was found that the translational temperature of the clusters suddenly decreased almost to zero when the cluster formation drastically increased around a reduced temperature (T*) of 0.5, while the internal temperature decreased linearly. Using the Andersen thermostat, which could simulate the aggregation of particles in an inert gas, both the internal and translational temperatures decreased almost linearly with time. When these thermostats were used, cluster-cluster and cluster-atom collisions did not give any magic number peaks in the size distribution up to 250 atoms/cluster at any temperature. Careful tracing of the cluster growth of 13-atom clusters showed no difference in reactivity between icosahedral and nonicosahedral clusters. To simulate cooling in a supersonic jet, a thermostat which controlled only the translational temperature was introduced. After the clusters were formed by cooling the system with this thermostat, their internal temperature stayed at T*≊0.5, while the translational temperature decreased linearly to zero with time as it was controlled. A long-time evaporation from these high-temperature clusters gave peaks at 13 and 19 (and less significantly at 23 and 26) which are magic number sizes corresponding to single, double, triple, and quadruple icosahedra, respectively. The internal temperatures of 13- and 19-atom clusters were higher than those of other size clusters. Higher evaporation energy was observed for the clusters of 13, 19, 23, and 26 atoms than for other size clusters after the long-time evaporation, but only the 13-atom clusters had the higher evaporation energy after cooling by the

  6. Generalization of the Viola-Jones method as a decision tree of strong classifiers for real-time object recognition in video stream

    NASA Astrophysics Data System (ADS)

    Minkina, A.; Nikolaev, D.; Usilin, S.; Kozyrev, V.

    2015-02-01

    In this paper, we present a new modification of Viola-Jones complex classifiers. We describe a complex classifier in the form of a decision tree and provide a method of training for such classifiers. Performance impact of the tree structure is analyzed. Comparison is carried out of precision and performance of the presented method with that of the classical cascade. Various tree architectures are experimentally studied. The task of vehicle wheels detection on images obtained from an automatic vehicle classification system is taken as an example.

  7. Strength of semiconductors, metals, and ceramics evaluated by a microscopic cleavage model with Morse-type and Lennard-Jones-type interaction

    SciTech Connect

    Hess, Peter

    2014-08-07

    An improved microscopic cleavage model, based on a Morse-type and Lennard-Jones-type interaction instead of the previously employed half-sine function, is used to determine the maximum cleavage strength for the brittle materials diamond, tungsten, molybdenum, silicon, GaAs, silica, and graphite. The results of both interaction potentials are in much better agreement with the theoretical strength values obtained by ab initio calculations for diamond, tungsten, molybdenum, and silicon than the previous model. Reasonable estimates of the intrinsic strength are presented for GaAs, silica, and graphite, where first principles values are not available.

  8. An efficient method for the determination of fourth virial coefficient with Lennard-Jones (12-6) potential and its application

    NASA Astrophysics Data System (ADS)

    Mamedov, Bahtiyar A.; Somuncu, Elif; Askerov, Iskender M.

    2016-08-01

    In this work, a new theoretical approach is proposed for calculating fourth virial coefficient with Leonard-Jones potential. The established algorithm can be used to evaluate the thermodynamics properties and the intermolecular interaction potentials of liquids and gases with an improved accuracy. Note that the evaluation of the high-order virial coefficients is very valuable for accurate calculation of thermodynamic parameters. By using the suggested method, the fourth virial coefficient of CH4, Ar,C2H6 and SF6 molecules are evaluated. The calculation results are useful for accurate interpretation of the experimental data and of the determination of related physical properties.

  9. Accuracy of temperature-derivative of radial distribution function calculated under approximations in Ornstein-Zernike theory for one-component Lennard-Jones fluid

    NASA Astrophysics Data System (ADS)

    Miyata, Tatsuhiko; Miyazaki, Sanae

    2016-08-01

    The accuracy of the temperature derivative of radial distribution function obtained under hypernetted chain (HNC), Kovalenko-Hirata (KH), Percus-Yevick (PY) and Verlet-modified (VM) closure approximations is examined for one-component Lennard-Jones fluid. As relevant thermodynamic quantities, constant-volume heat capacity and thermal pressure coefficient are investigated in terms of their accuracy under the above four approximations. It is found that HNC and KH closures overestimate these quantities, whereas PY closure tends to underestimate them. VM closure predicts rather accurately the quantities. A significant cancellation is observed along the integration for the above quantities under HNC and KH closures, especially at high density state.

  10. The 2015 revision of the Jones criteria for the diagnosis of acute rheumatic fever: implications for practice in low-income and middle-income countries

    PubMed Central

    Beaton, Andrea; Carapetis, Jonathan

    2015-01-01

    The Jones criteria has longed served as the primary guideline for diagnosing acute rheumatic fever (ARF). However, since the first iteration in 1944, the global epidemiology of ARF and our knowledge regarding the variability of its presentation have changed. In 2015, the American Heart Association took on an ambitious and successful revision, which accounts for these changes. For the first time, the criteria consider the risk within a population and offer two separate diagnostic pathways that prioritise specificity among those at low risk and sensitivity among those at moderate/high risk. Echocardiography is now recommended in all patients with suspected or confirmed ARF, and subclinical carditis can fulfil a major criterion for ARF in all populations. Finally, new and specific criteria are provided for the diagnosis of ARF recurrences. These changes improve the diagnosis of ARF among moderate/high-risk populations and re-establish the Jones criteria as the international gold standard for ARF diagnosis. It is our hope that they will also serve as a catalyst in the global community to increase advocacy, improve case detection, and invest in new research techniques that could ultimately control global ARF in our lifetimes. PMID:27326214

  11. Virial series for inhomogeneous fluids applied to the Lennard-Jones wall-fluid surface tension at planar and curved walls.

    PubMed

    Urrutia, Ignacio; Paganini, Iván E

    2016-05-01

    We formulate a straightforward scheme of statistical mechanics for inhomogeneous systems that includes the virial series in powers of the activity for the grand free energy and density distributions. There, cluster integrals formulated for inhomogeneous systems play a main role. We center on second order terms that were analyzed in the case of hard-wall confinement, focusing in planar, spherical, and cylindrical walls. Further analysis was devoted to the Lennard-Jones system and its generalization, the 2k-k potential. For these interaction potentials, the second cluster integral was evaluated analytically. We obtained the fluid-substrate surface tension at second order for the planar, spherical, and cylindrical confinement. Spherical and cylindrical cases were analyzed using a series expansion in the radius including higher order terms. We detected a lnR/R(2) dependence of the surface tension for the standard Lennard-Jones system confined by spherical and cylindrical walls, no matter if particles are inside or outside of the hard walls. The analysis was extended to bending and Gaussian curvatures, where exact expressions were also obtained. PMID:27155620

  12. Virial series for inhomogeneous fluids applied to the Lennard-Jones wall-fluid surface tension at planar and curved walls

    NASA Astrophysics Data System (ADS)

    Urrutia, Ignacio; Paganini, Iván E.

    2016-05-01

    We formulate a straightforward scheme of statistical mechanics for inhomogeneous systems that includes the virial series in powers of the activity for the grand free energy and density distributions. There, cluster integrals formulated for inhomogeneous systems play a main role. We center on second order terms that were analyzed in the case of hard-wall confinement, focusing in planar, spherical, and cylindrical walls. Further analysis was devoted to the Lennard-Jones system and its generalization, the 2k-k potential. For these interaction potentials, the second cluster integral was evaluated analytically. We obtained the fluid-substrate surface tension at second order for the planar, spherical, and cylindrical confinement. Spherical and cylindrical cases were analyzed using a series expansion in the radius including higher order terms. We detected a lnR/R2 dependence of the surface tension for the standard Lennard-Jones system confined by spherical and cylindrical walls, no matter if particles are inside or outside of the hard walls. The analysis was extended to bending and Gaussian curvatures, where exact expressions were also obtained.

  13. Communication: Studies of the Lennard-Jones fluid in 2, 3, and 4 dimensions highlight the need for a liquid-state 1/d expansion.

    PubMed

    Costigliola, Lorenzo; Schrøder, Thomas B; Dyre, Jeppe C

    2016-06-21

    The recent theoretical prediction by Maimbourg and Kurchan [e-print arXiv:1603.05023 (2016)] that for regular pair-potential systems the virial potential-energy correlation coefficient increases towards unity as the dimension d goes to infinity is investigated for the standard 12-6 Lennard-Jones fluid. This is done by computer simulations for d = 2, 3, 4 going from the critical point along the critical isotherm/isochore to higher density/temperature. In both cases the virial potential-energy correlation coefficient increases significantly. For a given density and temperature relative to the critical point, with increasing number of dimension the Lennard-Jones system conforms better to the hidden-scale-invariance property characterized by high virial potential-energy correlations (a property that leads to the existence of isomorphs in the thermodynamic phase diagram, implying that it becomes effectively one-dimensional in regard to structure and dynamics). The present paper also gives the first numerical demonstration of isomorph invariance of structure and dynamics in four dimensions. Our findings emphasize the need for a universally applicable 1/d expansion in liquid-state theory; we conjecture that the systems known to obey hidden scale invariance in three dimensions are those for which the yet-to-be-developed 1/d expansion converges rapidly. PMID:27334147

  14. Statistical analysis of earthquakes after the 1999 MW 7.7 Chi-Chi, Taiwan, earthquake based on a modified Reasenberg-Jones model

    NASA Astrophysics Data System (ADS)

    Chen, Yuh-Ing; Huang, Chi-Shen; Liu, Jann-Yenq

    2015-12-01

    We investigated the temporal-spatial hazard of the earthquakes after the 1999 September 21 MW = 7.7 Chi-Chi shock in a continental region of Taiwan. The Reasenberg-Jones (RJ) model (Reasenberg and Jones, 1989, 1994) that combines the frequency-magnitude distribution (Gutenberg and Richter, 1944) and time-decaying occurrence rate (Utsu et al., 1995) is conventionally employed for assessing the earthquake hazard after a large shock. However, it is found that the b values in the frequency-magnitude distribution of the earthquakes in the study region dramatically decreased from background values after the Chi-Chi shock, and then gradually increased up. The observation of a time-dependent frequency-magnitude distribution motivated us to propose a modified RJ model (MRJ) to assess the earthquake hazard. To see how the models perform on assessing short-term earthquake hazard, the RJ and MRJ models were separately used to sequentially forecast earthquakes in the study region. To depict the potential rupture area for future earthquakes, we further constructed relative hazard (RH) maps based on the two models. The Receiver Operating Characteristics (ROC) curves (Swets, 1988) finally demonstrated that the RH map based on the MRJ model was, in general, superior to the one based on the original RJ model for exploring the spatial hazard of earthquakes in a short time after the Chi-Chi shock.

  15. Communication: Studies of the Lennard-Jones fluid in 2, 3, and 4 dimensions highlight the need for a liquid-state 1/d expansion

    NASA Astrophysics Data System (ADS)

    Costigliola, Lorenzo; Schrøder, Thomas B.; Dyre, Jeppe C.

    2016-06-01

    The recent theoretical prediction by Maimbourg and Kurchan [e-print arXiv:1603.05023 (2016)] that for regular pair-potential systems the virial potential-energy correlation coefficient increases towards unity as the dimension d goes to infinity is investigated for the standard 12-6 Lennard-Jones fluid. This is done by computer simulations for d = 2, 3, 4 going from the critical point along the critical isotherm/isochore to higher density/temperature. In both cases the virial potential-energy correlation coefficient increases significantly. For a given density and temperature relative to the critical point, with increasing number of dimension the Lennard-Jones system conforms better to the hidden-scale-invariance property characterized by high virial potential-energy correlations (a property that leads to the existence of isomorphs in the thermodynamic phase diagram, implying that it becomes effectively one-dimensional in regard to structure and dynamics). The present paper also gives the first numerical demonstration of isomorph invariance of structure and dynamics in four dimensions. Our findings emphasize the need for a universally applicable 1/d expansion in liquid-state theory; we conjecture that the systems known to obey hidden scale invariance in three dimensions are those for which the yet-to-be-developed 1/d expansion converges rapidly.

  16. Calculation of the second self-diffusion and viscosity virial coefficients of Lennard-Jones fluid by equilibrium molecular dynamics simulations.

    PubMed

    Oderji, Hassan Yousefi; Ding, Hongbin; Behnejad, Hassan

    2011-06-01

    The second self-diffusion and viscosity virial coefficients of the Lennard-Jones (LJ) fluid were calculated by a detailed evaluation of the velocity and shear-stress autocorrelation functions using equilibrium molecular dynamics simulations at low and moderate densities. Accurate calculation of these coefficients requires corresponding transport coefficient values with low degrees of uncertainty. These were obtained via very long simulations by increasing the number of particles and by using the knowledge of correlation functions in the Green-Kubo method in conjunction with their corresponding generalized Einstein relations. The values of the self-diffusion and shear viscosity coefficients have been evaluated for systems with reduced densities between 0.0005 and 0.05 and reduced temperatures from 0.7 to 30.0. This provides a new insight into the transport coefficients beyond what can be offered by the Rainwater-Friend theory, which has not been developed for the self-diffusion coefficient. PMID:21797351

  17. Accurate Monte Carlo simulations on FCC and HCP Lennard-Jones solids at very low temperatures and high reduced densities up to 1.30

    NASA Astrophysics Data System (ADS)

    Adidharma, Hertanto; Tan, Sugata P.

    2016-07-01

    Canonical Monte Carlo simulations on face-centered cubic (FCC) and hexagonal closed packed (HCP) Lennard-Jones (LJ) solids are conducted at very low temperatures (0.10 ≤ T∗ ≤ 1.20) and high densities (0.96 ≤ ρ∗ ≤ 1.30). A simple and robust method is introduced to determine whether or not the cutoff distance used in the simulation is large enough to provide accurate thermodynamic properties, which enables us to distinguish the properties of FCC from that of HCP LJ solids with confidence, despite their close similarities. Free-energy expressions derived from the simulation results are also proposed, not only to describe the properties of those individual structures but also the FCC-liquid, FCC-vapor, and FCC-HCP solid phase equilibria.

  18. Universal scaling of potential energy functions describing intermolecular interactions. I. Foundations and scalable forms of new generalized Mie, Lennard-Jones, Morse, and Buckingham exponential-6 potentials

    SciTech Connect

    Xantheas, Sotiris S.; Werhahn, Jasper C.

    2014-08-14

    Based on the formulation of the analytical expression of the potential V(r) describing intermolecular interactions in terms of the dimensionless variables r*=r/rm and !*=V/!, where rm is the separation at the minimum and ! the well depth, we propose more generalized scalable forms for the commonly used Lennard-Jones, Mie, Morse and Buckingham exponential-6 potential energy functions (PEFs). These new generalized forms have an additional parameter from and revert to the original ones for some choice of that parameter. In this respect, the original forms can be considered as special cases of the more general forms that are introduced. We also propose a scalable, but nonrevertible to the original one, 4-parameter extended Morse potential.

  19. Optical Layout Analysis of Polarization Interference Imaging Spectrometer by Jones Calculus in View of both Optical Throughput and Interference Fringe Visibility

    NASA Astrophysics Data System (ADS)

    Zhang, Xuanni; Zhang, Chunmin

    2013-01-01

    A polarization interference imaging spectrometer based on Savart polariscope was presented. Its optical throughput was analyzed by Jones calculus. The throughput expression was given, and clearly showed that the optical throughput mainly depended on the intensity of incident light, transmissivity, refractive index and the layout of optical system. The simulation and analysis gave the optimum layout in view of both optical throughput and interference fringe visibility, and verified that the layout of our former design was optimum. The simulation showed that a small deviation from the optimum layout influenced interference fringe visibility little for the optimum one, but influenced severely for others, so a small deviation is admissible in the optimum, and this can mitigate the manufacture difficulty. These results pave the way for further research and engineering design.

  20. Simulation of the third law free energies of face-centered-cubic and hexagonal-close-packed Lennard-Jones solids

    NASA Astrophysics Data System (ADS)

    Somasi, Sweta; Khomami, Bamin; Lovett, Ronald

    2000-09-01

    On a thermodynamic path proposed by Lutsko, Wolf, and Yip, a solid is transformed at fixed density into an ideal gas. The accuracy of molecular dynamics simulation results for the free energy of solids using this path is compromised by the presence of a singularity on the path and by the nonergodic behavior of the ideal gas. We present calculations of the third law free energies of the face-centered-cubic (fcc) and hexagonal-close-packed (hcp) solids of argon (modeled as a Lennard-Jones system) to illustrate how the singularity and the nonergodic dynamics introduce errors. Strategies for removing the singularity and the nonergodic dynamics are presented. Finally, an analytic expansion around the ideal state is developed to provide an alternate route to the free energy of those states for which simulation estimates give large statistical uncertainties. The quantitative errors in these new approaches to the simulation of the free energy of a solid are given.

  1. Fourier-domain Jones-matrix mapping of a complex degree of mutual anisotropy in differentiation of biological tissues' pathological states.

    PubMed

    Ushenko, Yu A; Trifonyuk, L Yu; Dubolazov, A V; Karachevtsev, A O

    2014-04-01

    This article presents the theoretical background of an azimuthally stable method of Jones-matrix mapping of histological sections of a uterine wall biopsy on the basis of spatial-frequency selection of the mechanisms of linear and circular birefringence. The diagnostic application of a new correlation parameter--a complex degree of mutual anisotropy--is analytically substantiated. The method of measuring coordinate distributions of a complex degree of mutual anisotropy with further spatial filtration of their high- and low-frequency components is developed. The interconnections of such distributions with linear and circular birefringence parameters of the uterine-wall-endometrium histological sections are found. The comparative results of measuring the coordinate distributions of a complex degree of mutual anisotropy formed by fibrillar networks of myosin and collagen fibrils of uterus wall tissue of different pathological states--pre-cancer (dysplasia) and cancer (adenocarcinoma)--are shown. The values and ranges of change of the statistical (moments of the first to fourth orders) parameters of complex degree of mutual-anisotropy coordinate distributions are studied. The objective criteria of diagnosing the pathology and differentiation of its severity degree are determined. PMID:24787205

  2. First and Second-Phase Transitions of Gases at Isobaric Process; Lennard-Jones (9,6) Gases with a Hard Core

    NASA Astrophysics Data System (ADS)

    Matsumoto, Akira

    2014-12-01

    The thermodynamic functions for Lennard-Jones (9,6) gases with a hard core that are evaluated till the third virial coefficients, are investigated at an isobaric process. Some thermodynamic functions are analytically expressed as functions of intensive variables, temperature, and pressure. Some thermodynamic quantities for carbon dioxide are calculated numerically and drawn graphically. In critical states, the heat capacity diverges to infinity at the critical point while the Gibbs free energy, volume, enthalpy, and entropy are continuous at the critical point. In the coexistence of two phases, the boiling temperatures and the enthalpy changes of vaporization are obtained by numerical calculations for 20 substances. The Gibbs free energy indicates a polygonal line; entropy, volume, and enthalpy jump from the liquid to gaseous phase at the boiling point. The heat capacity does not diverge to infinity but shows a finite discrepancy at boiling point. This suggests that a first-order phase transition at the boiling point and a second-order phase transition may occur at the critical point.

  3. Self-consistent phonons revisited. I. The role of thermal versus quantum fluctuations on structural transitions in large Lennard-Jones clusters

    NASA Astrophysics Data System (ADS)

    Georgescu, Ionuţ; Mandelshtam, Vladimir A.

    2012-10-01

    The theory of self-consistent phonons (SCP) was originally developed to address the anharmonic effects in condensed matter systems. The method seeks a harmonic, temperature-dependent Hamiltonian that provides the "best fit" for the physical Hamiltonian, the "best fit" being defined as the one that optimizes the Helmholtz free energy at a fixed temperature. The present developments provide a scalable O(N) unified framework that accounts for anharmonic effects in a many-body system, when it is probed by either thermal (ℏ → 0) or quantum fluctuations (T → 0). In these important limits, the solution of the nonlinear SCP equations can be reached in a manner that requires only the multiplication of 3N × 3N matrices, with no need of diagonalization. For short range potentials, such as Lennard-Jones, the Hessian, and other related matrices are highly sparse, so that the scaling of the matrix multiplications can be reduced from O(N3) to ˜ O(N). We investigate the role of quantum effects by continuously varying the de-Boer quantum delocalization parameter Λ and report the N-Λ (T = 0), and also the classical N-T (Λ = 0) phase diagrams for sizes up to N ˜ 104. Our results demonstrate that the harmonic approximation becomes inadequate already for such weakly quantum systems as neon clusters, or for classical systems much below the melting temperatures.

  4. A pressure consistent bridge correction of Kovalenko-Hirata closure in Ornstein-Zernike theory for Lennard-Jones fluids by apparently adjusting sigma parameter

    NASA Astrophysics Data System (ADS)

    Ebato, Yuki; Miyata, Tatsuhiko

    2016-05-01

    Ornstein-Zernike (OZ) integral equation theory is known to overestimate the excess internal energy, Uex, pressure through the virial route, Pv, and excess chemical potential, μex, for one-component Lennard-Jones (LJ) fluids under hypernetted chain (HNC) and Kovalenko-Hirata (KH) approximatons. As one of the bridge correction methods to improve the precision of these thermodynamic quantities, it was shown in our previous paper that the method to apparently adjust σ parameter in the LJ potential is effective [T. Miyata and Y. Ebato, J. Molec. Liquids. 217, 75 (2016)]. In our previous paper, we evaluated the actual variation in the σ parameter by using a fitting procedure to molecular dynamics (MD) results. In this article, we propose an alternative method to determine the actual variation in the σ parameter. The proposed method utilizes a condition that the virial and compressibility pressures coincide with each other. This method can correct OZ theory without a fitting procedure to MD results, and possesses characteristics of keeping a form of HNC and/or KH closure. We calculate the radial distribution function, pressure, excess internal energy, and excess chemical potential for one-component LJ fluids to check the performance of our proposed bridge function. We discuss the precision of these thermodynamic quantities by comparing with MD results. In addition, we also calculate a corrected gas-liquid coexistence curve based on a corrected KH-type closure and compare it with MD results.

  5. Power-law correlations in finance-related Google searches, and their cross-correlations with volatility and traded volume: Evidence from the Dow Jones Industrial components

    NASA Astrophysics Data System (ADS)

    Kristoufek, Ladislav

    2015-06-01

    We study power-law correlations properties of the Google search queries for Dow Jones Industrial Average (DJIA) component stocks. Examining the daily data of the searched terms with a combination of the rescaled range and rescaled variance tests together with the detrended fluctuation analysis, we show that the searches are in fact power-law correlated with Hurst exponents between 0.8 and 1.1. The general interest in the DJIA stocks is thus strongly persistent. We further reinvestigate the cross-correlation structure between the searches, traded volume and volatility of the component stocks using the detrended cross-correlation and detrending moving-average cross-correlation coefficients. Contrary to the universal power-law correlations structure of the related Google searches, the results suggest that there is no universal relationship between the online search queries and the analyzed financial measures. Even though we confirm positive correlation for a majority of pairs, there are several pairs with insignificant or even negative correlations. In addition, the correlations vary quite strongly across scales.

  6. Examination of Electric Utility CEO Compensation 2000-2011 and its significance to Company Earnings, Company Revenue, Company Stock and the Dow Jones Utility Average

    NASA Astrophysics Data System (ADS)

    Labovitch, Andrew

    This dissertation examined electric utility CEO compensation during the years 2000 through 2011 for United States owned and operated companies. To determine the extent to which agency theory may apply to electric utility CEO compensation, this examination segmented the industry by four types of company financial metrics: revenue, earnings, stock price and the Dow Jones Utility Average; by five categories of CEO compensation: base salary, bonus, stock grants, all other compensation and total compensation; and by four categories of company size as measured by revenue: large, medium, small and the industry as a whole. Electric utility CEO compensation data was analyzed with the financial metrics to determine correlations. No type of compensation was highly correlated to any of the financial metrics for any size industry segment indicating that there was little agency. CEO compensation in large electric utility companies was higher than compensation in medium and smaller companies even though the CEOs at larger companies earned less per dollar of revenue and per dollar of earnings than their counterparts in smaller companies.

  7. Hypernetted-chain investigation of the random first-order transition of a Lennard-Jones liquid to an ideal glass.

    PubMed

    Bomont, Jean-Marc; Hansen, Jean-Pierre; Pastore, Giorgio

    2015-10-01

    The structural and thermodynamic behavior of a deeply supercooled Lennard-Jones liquid, and its random first-order transition (RFOT) to an ideal glass is investigated, using a system of two weakly coupled replicas and the hypernetted chain integral equation for the pair structure of this symmetric binary system. A systematic search in the density-temperature plane points to the existence of two glass branches below a density-dependent threshold temperature. The branch of lower free energy exhibits a rapid growth of the structural overlap order parameter upon cooling and may be identified with the ideal glass phase conjectured by several authors for both spin and structural glasses. The RFOT, signaled by a sharp discontinuity of the order parameter, is predicted to be weakly first order from a thermodynamic viewpoint. The transition temperature T(cr) increases rapidly with density and approximately obeys a scaling relation valid for a reference system of particles interacting via a purely repulsive 1/r(18) potential. PMID:26565249

  8. A Qualitative Comparison of the C-Ring Test and the Jones Test as Standard Practice Test Methods for Studying Stress Corrosion Cracking in Ferritic Steels

    SciTech Connect

    Thomson, Jeffery K; Pawel, Steven J

    2015-01-01

    Creep-strength-enhanced-ferritic (CSEF) steels have been widely implemented as water wall alloy materials in the coal-fired power industry for many years. The stress corrosion cracking (SCC) behavior of this class of materials is currently of significant interest to the industry due to recent failures. To better understand the test methods used to characterize SCC behavior in the laboratory, three representative CSEF alloys (T23, T24, and T92) were subjected to two SCC test protocols: the Jones Test set forth in DIN 50915, and the C-ring SCC test set forth in ASTM G38-01. Samples were tested in either the as-received (normalized + tempered) condition or in the normalized condition (quenched from 1065 C). Samples were exposed to aerated water in one test case and de-aerated water in a second test case for a period of 7 days at 200 C. It was found that for both test protocols, the normalized condition with aerated water led to severe cracking for all three alloys, whereas no evidence of cracking was found for the other conditions.

  9. Development of molecular closures for the reference interaction site model theory with application to square-well and Lennard-Jones homonuclear diatomics.

    PubMed

    Munaò, Gianmarco; Costa, Dino; Caccamo, Carlo

    2016-10-19

    Inspired by significant improvements obtained for the performances of the polymer reference interaction site model (PRISM) theory of the fluid phase when coupled with 'molecular closures' (Schweizer and Yethiraj 1993 J. Chem. Phys. 98 9053), we exploit a matrix generalization of this concept, suitable for the more general RISM framework. We report a preliminary test of the formalism, as applied to prototype square-well homonuclear diatomics. As for the structure, comparison with Monte Carlo shows that molecular closures are slightly more predictive than their 'atomic' counterparts, and thermodynamic properties are equally accurate. We also devise an application of molecular closures to models interacting via continuous, soft-core potentials, by using well established prescriptions in liquid state perturbation theories. In the case of Lennard-Jones dimers, our scheme definitely improves over the atomic one, providing semi-quantitative structural results, and quite good estimates of internal energy, pressure and phase coexistence. Our finding paves the way to a systematic employment of molecular closures within the RISM framework to be applied to more complex systems, such as molecules constituted by several non-equivalent interaction sites. PMID:27548461

  10. A reference-modified density functional theory: An application to solvation free-energy calculations for a Lennard-Jones solution

    NASA Astrophysics Data System (ADS)

    Sumi, Tomonari; Maruyama, Yutaka; Mitsutake, Ayori; Koga, Kenichiro

    2016-06-01

    In the conventional classical density functional theory (DFT) for simple fluids, an ideal gas is usually chosen as the reference system because there is a one-to-one correspondence between the external field and the density distribution function, and the exact intrinsic free-energy functional is available for the ideal gas. In this case, the second-order density functional Taylor series expansion of the excess intrinsic free-energy functional provides the hypernetted-chain (HNC) approximation. Recently, it has been shown that the HNC approximation significantly overestimates the solvation free energy (SFE) for an infinitely dilute Lennard-Jones (LJ) solution, especially when the solute particles are several times larger than the solvent particles [T. Miyata and J. Thapa, Chem. Phys. Lett. 604, 122 (2014)]. In the present study, we propose a reference-modified density functional theory as a systematic approach to improve the SFE functional as well as the pair distribution functions. The second-order density functional Taylor series expansion for the excess part of the intrinsic free-energy functional in which a hard-sphere fluid is introduced as the reference system instead of an ideal gas is applied to the LJ pure and infinitely dilute solution systems and is proved to remarkably improve the drawbacks of the HNC approximation. Furthermore, the third-order density functional expansion approximation in which a factorization approximation is applied to the triplet direct correlation function is examined for the LJ systems. We also show that the third-order contribution can yield further refinements for both the pair distribution function and the excess chemical potential for the pure LJ liquids.

  11. Explicit expressions of self-diffusion coefficient, shear viscosity, and the Stokes-Einstein relation for binary mixtures of Lennard-Jones liquids

    SciTech Connect

    Ohtori, Norikazu; Ishii, Yoshiki

    2015-10-28

    Explicit expressions of the self-diffusion coefficient, D{sub i}, and shear viscosity, η{sub sv}, are presented for Lennard-Jones (LJ) binary mixtures in the liquid states along the saturated vapor line. The variables necessary for the expressions were derived from dimensional analysis of the properties: atomic mass, number density, packing fraction, temperature, and the size and energy parameters used in the LJ potential. The unknown dependence of the properties on each variable was determined by molecular dynamics (MD) calculations for an equimolar mixture of Ar and Kr at the temperature of 140 K and density of 1676 kg m{sup −3}. The scaling equations obtained by multiplying all the single-variable dependences can well express D{sub i} and η{sub sv} evaluated by the MD simulation for a whole range of compositions and temperatures without any significant coupling between the variables. The equation for D{sub i} can also explain the dual atomic-mass dependence, i.e., the average-mass and the individual-mass dependence; the latter accounts for the “isotope effect” on D{sub i}. The Stokes-Einstein (SE) relation obtained from these equations is fully consistent with the SE relation for pure LJ liquids and that for infinitely dilute solutions. The main differences from the original SE relation are the presence of dependence on the individual mass and on the individual energy parameter. In addition, the packing-fraction dependence turned out to bridge another gap between the present and original SE relations as well as unifying the SE relation between pure liquids and infinitely dilute solutions.

  12. Development of a Jones vector based model for the measurement of a plasma current in a thermonuclear fusion reactor with a POTDR setup

    NASA Astrophysics Data System (ADS)

    Aerssens, M.; Gusarov, A.; Moreau, P.; Malard, P.; Massaut, V.; Mégret, P.; Wuilpart, M.

    2012-04-01

    Fibre optical current sensor (FOCS) is a promising alternative to inductive sensors for the measurement of the plasma current in future thermonuclear fusion reactors. Standard FOCS relies on the measurement of the state of polarisation (SOP) of light at the output of an optical bre surrounding a current. Because of the Faraday eect, magnetic eld induced by electrical current rotates the SOP of light travelling into the bre. According to the Ampere's theorem this rotation is proportional to the surrounded current. In future tokamaks like ITER and DEMO, the plasma current will be suciently high to generate a rotation of the SOP higher than 2 radians. These conditions may lead to uncertainties on the determination of the plasma current if no post processing is performed. In this paper we propose a solution with a Polarisation Optical Time Domain Re ectometer (POTDR) setup allowing both unambiguous plasma current measurement and also local magnetic eld measurements. This measurement is based on the assessment of the SOP rotation of the Rayleigh backscattered POTDR signal. Thanks to the presence of an input polarizer, SOP variations are converted into power uctuations that contain information about the distribution of the magnetic eld and therefore about the plasma current. Using the Jones formalism we have developed a model accounting for the modication of the SOP of light travelling into the optical bre and the evolution of the POTDR signal. In parallel experimental PODTR measurements have been performed on the Tore Supra tokamak situated at CEA Cadarache in France. A comparison between the models and the experimental results conrms the capability of the system to measure the plasma current and the local magnetic eld even if further data post processing are still required.

  13. Explicit expressions of self-diffusion coefficient, shear viscosity, and the Stokes-Einstein relation for binary mixtures of Lennard-Jones liquids

    NASA Astrophysics Data System (ADS)

    Ohtori, Norikazu; Ishii, Yoshiki

    2015-10-01

    Explicit expressions of the self-diffusion coefficient, Di, and shear viscosity, ηsv, are presented for Lennard-Jones (LJ) binary mixtures in the liquid states along the saturated vapor line. The variables necessary for the expressions were derived from dimensional analysis of the properties: atomic mass, number density, packing fraction, temperature, and the size and energy parameters used in the LJ potential. The unknown dependence of the properties on each variable was determined by molecular dynamics (MD) calculations for an equimolar mixture of Ar and Kr at the temperature of 140 K and density of 1676 kg m-3. The scaling equations obtained by multiplying all the single-variable dependences can well express Di and ηsv evaluated by the MD simulation for a whole range of compositions and temperatures without any significant coupling between the variables. The equation for Di can also explain the dual atomic-mass dependence, i.e., the average-mass and the individual-mass dependence; the latter accounts for the "isotope effect" on Di. The Stokes-Einstein (SE) relation obtained from these equations is fully consistent with the SE relation for pure LJ liquids and that for infinitely dilute solutions. The main differences from the original SE relation are the presence of dependence on the individual mass and on the individual energy parameter. In addition, the packing-fraction dependence turned out to bridge another gap between the present and original SE relations as well as unifying the SE relation between pure liquids and infinitely dilute solutions.

  14. Explicit expressions of self-diffusion coefficient, shear viscosity, and the Stokes-Einstein relation for binary mixtures of Lennard-Jones liquids.

    PubMed

    Ohtori, Norikazu; Ishii, Yoshiki

    2015-10-28

    Explicit expressions of the self-diffusion coefficient, D(i), and shear viscosity, η(sv), are presented for Lennard-Jones (LJ) binary mixtures in the liquid states along the saturated vapor line. The variables necessary for the expressions were derived from dimensional analysis of the properties: atomic mass, number density, packing fraction, temperature, and the size and energy parameters used in the LJ potential. The unknown dependence of the properties on each variable was determined by molecular dynamics (MD) calculations for an equimolar mixture of Ar and Kr at the temperature of 140 K and density of 1676 kg m(-3). The scaling equations obtained by multiplying all the single-variable dependences can well express D(i) and η(sv) evaluated by the MD simulation for a whole range of compositions and temperatures without any significant coupling between the variables. The equation for Di can also explain the dual atomic-mass dependence, i.e., the average-mass and the individual-mass dependence; the latter accounts for the "isotope effect" on Di. The Stokes-Einstein (SE) relation obtained from these equations is fully consistent with the SE relation for pure LJ liquids and that for infinitely dilute solutions. The main differences from the original SE relation are the presence of dependence on the individual mass and on the individual energy parameter. In addition, the packing-fraction dependence turned out to bridge another gap between the present and original SE relations as well as unifying the SE relation between pure liquids and infinitely dilute solutions. PMID:26520534

  15. An analytical equation of state for describing isotropic-nematic phase equilibria of Lennard-Jones chain fluids with variable degree of molecular flexibility

    NASA Astrophysics Data System (ADS)

    van Westen, Thijs; Oyarzún, Bernardo; Vlugt, Thijs J. H.; Gross, Joachim

    2015-06-01

    We develop an equation of state (EoS) for describing isotropic-nematic (IN) phase equilibria of Lennard-Jones (LJ) chain fluids. The EoS is developed by applying a second order Barker-Henderson perturbation theory to a reference fluid of hard chain molecules. The chain molecules consist of tangentially bonded spherical segments and are allowed to be fully flexible, partially flexible (rod-coil), or rigid linear. The hard-chain reference contribution to the EoS is obtained from a Vega-Lago rescaled Onsager theory. For the description of the (attractive) dispersion interactions between molecules, we adopt a segment-segment approach. We show that the perturbation contribution for describing these interactions can be divided into an "isotropic" part, which depends only implicitly on orientational ordering of molecules (through density), and an "anisotropic" part, for which an explicit dependence on orientational ordering is included (through an expansion in the nematic order parameter). The perturbation theory is used to study the effect of chain length, molecular flexibility, and attractive interactions on IN phase equilibria of pure LJ chain fluids. Theoretical results for the IN phase equilibrium of rigid linear LJ 10-mers are compared to results obtained from Monte Carlo simulations in the isobaric-isothermal (NPT) ensemble, and an expanded formulation of the Gibbs-ensemble. Our results show that the anisotropic contribution to the dispersion attractions is irrelevant for LJ chain fluids. Using the isotropic (density-dependent) contribution only (i.e., using a zeroth order expansion of the attractive Helmholtz energy contribution in the nematic order parameter), excellent agreement between theory and simulations is observed. These results suggest that an EoS contribution for describing the attractive part of the dispersion interactions in real LCs can be obtained from conventional theoretical approaches designed for isotropic fluids, such as a Perturbed

  16. Accurate Calculation of Hydration Free Energies using Pair-Specific Lennard-Jones Parameters in the CHARMM Drude Polarizable Force Field

    PubMed Central

    Baker, Christopher M.; Lopes, Pedro E. M.; Zhu, Xiao; Roux, Benoît; MacKerell, Alexander D.

    2010-01-01

    Lennard-Jones (LJ) parameters for a variety of model compounds have previously been optimized within the CHARMM Drude polarizable force field to reproduce accurately pure liquid phase thermodynamic properties as well as additional target data. While the polarizable force field resulting from this optimization procedure has been shown to satisfactorily reproduce a wide range of experimental reference data across numerous series of small molecules, a slight but systematic overestimate of the hydration free energies has also been noted. Here, the reproduction of experimental hydration free energies is greatly improved by the introduction of pair-specific LJ parameters between solute heavy atoms and water oxygen atoms that override the standard LJ parameters obtained from combining rules. The changes are small and a systematic protocol is developed for the optimization of pair-specific LJ parameters and applied to the development of pair-specific LJ parameters for alkanes, alcohols and ethers. The resulting parameters not only yield hydration free energies in good agreement with experimental values, but also provide a framework upon which other pair-specific LJ parameters can be added as new compounds are parametrized within the CHARMM Drude polarizable force field. Detailed analysis of the contributions to the hydration free energies reveals that the dispersion interaction is the main source of the systematic errors in the hydration free energies. This information suggests that the systematic error may result from problems with the LJ combining rules and is combined with analysis of the pair-specific LJ parameters obtained in this work to identify a preliminary improved combining rule. PMID:20401166

  17. Spontaneous cavitation in a Lennard-Jones liquid: Molecular dynamics simulation and the van der Waals-Cahn-Hilliard gradient theory

    NASA Astrophysics Data System (ADS)

    Baidakov, Vladimir G.

    2016-02-01

    The process of bubble nucleation in a Lennard-Jones (LJ) liquid is studied by molecular dynamics (MD) simulation. The bubble nucleation rate J is determined by the mean life-time method at temperatures above that of the triple point in the region of negative pressures. The results of simulation are compared with classical nucleation theory (CNT) and modified classical nucleation theory (MCNT), in which the work of formation of a critical bubble is determined in the framework of the van der Waals-Cahn-Hilliard gradient theory (GT). It has been found that the values of J obtained in MD simulation systematically exceed the data of CNT, and this excess in the nucleation rate reaches 8-10 orders of magnitude close to the triple point temperature. The results of MCNT are in satisfactory agreement with the data of MD simulation. To describe the properties of vapor-phase nuclei in the framework of GT, an equation of state has been built up which describes stable, metastable and labile regions of LJ fluids. The surface tension of critical bubbles γ has been found from CNT and data of MD simulation as a function of the radius of curvature of the surface of tension R*. The dependence γ(R*) has also been calculated from GT. The Tolman length has been determined, which is negative and in modulus equal to ≈(0.1 - 0.2) σ. The paper discusses the applicability of the Tolman formula to the description of the properties of critical nuclei in nucleation.

  18. Variability in Thermal response of Primed and Non‐primed Seeds of Squirreltail [Elymus elymoides (Raf.) Swezey and Elymus multisetus (J. G. Smith) M. E. Jones

    PubMed Central

    HARDEGREE, STUART P.; JONES, THOMAS A.; VACTOR, STEVEN S. VAN

    2002-01-01

    Bottlebrush squirreltail [Elymus elymoides (Raf.) Swezey = Sitanion hystrix (Nutt.) J. G. Smith] and big squirreltail [Elymus multisetus (J. G. Smith) M. E. Jones = Sitanion jubatum (J. G. Smith)] have a broad geographical distribution and have been identified as high priority species for restoration of degraded rangelands in the western United States. These rangelands exhibit high annual and seasonal variability in seedbed microclimate. The objective of this study was to examine variability in thermal response of both primed and non‐primed seeds of these species in the context of field‐variable temperature regimes. Seed priming treatments were selected to optimize germination rate in a low‐temperature test environment. Primed and non‐primed seeds were evaluated for laboratory germination response under 12 constant temperature treatments between 3 and 36 °C. Thermal time and base temperature were estimated by regression analysis of germination rate as a function of temperature in the sub‐optimal temperature range. The thermal germination model and 6 years of field temperature data were used to simulate the potential germination response under different field planting scenarios. Seed priming reduced the total germination percentage of some seedlots, especially at higher germination temperatures. Seed priming increased the germination rate (reduced the number of days to 50 % germination) by 3·8–8·4 d at 6 °C with a mean germination advancement of 6·9 ± 0·6 d. Maximum germination advancement in the model simulations was 5–10 d for planting dates between 1 March and 15 May. Model simulations can be used to expand germination analysis beyond simple treatment comparisons, to include a probabilistic description of potential germination response under historical or potential future conditions of seedbed microclimate. PMID:12096743

  19. Local pressure components and interfacial tension at a liquid-solid interface obtained by the perturbative method in the Lennard-Jones system

    SciTech Connect

    Fujiwara, K.; Shibahara, M.

    2014-07-21

    A classical molecular dynamics simulation was conducted for a system composed of fluid molecules between two planar solid surfaces, and whose interactions are described by the 12-6 Lennard-Jones form. This paper presents a general description of the pressure components and interfacial tension at a fluid-solid interface obtained by the perturbative method on the basis of statistical thermodynamics, proposes a method to consider the pressure components tangential to an interface which are affected by interactions with solid atoms, and applies this method to the calculation system. The description of the perturbative method is extended to subsystems, and the local pressure components and interfacial tension at a liquid-solid interface are obtained and examined in one- and two-dimensions. The results are compared with those obtained by two alternative methods: (a) an evaluation of the intermolecular force acting on a plane, and (b) the conventional method based on the virial expression. The accuracy of the numerical results is examined through the comparison of the results obtained by each method. The calculated local pressure components and interfacial tension of the fluid at a liquid-solid interface agreed well with the results of the two alternative methods at each local position in one dimension. In two dimensions, the results showed a characteristic profile of the tangential pressure component which depended on the direction tangential to the liquid-solid interface, which agreed with that obtained by the evaluation of the intermolecular force acting on a plane in the present study. Such good agreement suggests that the perturbative method on the basis of statistical thermodynamics used in this study is valid to obtain the local pressure components and interfacial tension at a liquid-solid interface.

  20. A Recurrent Mosaic Mutation in SMO, Encoding the Hedgehog Signal Transducer Smoothened, Is the Major Cause of Curry-Jones Syndrome.

    PubMed

    Twigg, Stephen R F; Hufnagel, Robert B; Miller, Kerry A; Zhou, Yan; McGowan, Simon J; Taylor, John; Craft, Jude; Taylor, Jenny C; Santoro, Stephanie L; Huang, Taosheng; Hopkin, Robert J; Brady, Angela F; Clayton-Smith, Jill; Clericuzio, Carol L; Grange, Dorothy K; Groesser, Leopold; Hafner, Christian; Horn, Denise; Temple, I Karen; Dobyns, William B; Curry, Cynthia J; Jones, Marilyn C; Wilkie, Andrew O M

    2016-06-01

    Curry-Jones syndrome (CJS) is a multisystem disorder characterized by patchy skin lesions, polysyndactyly, diverse cerebral malformations, unicoronal craniosynostosis, iris colobomas, microphthalmia, and intestinal malrotation with myofibromas or hamartomas. Cerebellar medulloblastoma has been described in a single affected individual; in another, biopsy of skin lesions showed features of trichoblastoma. The combination of asymmetric clinical features, patchy skin manifestations, and neoplastic association previously led to the suggestion that this could be a mosaic condition, possibly involving hedgehog (Hh) signaling. Here, we show that CJS is caused by recurrent somatic mosaicism for a nonsynonymous variant in SMO (c.1234C>T [p.Leu412Phe]), encoding smoothened (SMO), a G-protein-coupled receptor that transduces Hh signaling. We identified eight mutation-positive individuals (two of whom had not been reported previously) with highly similar phenotypes and demonstrated varying amounts of the mutant allele in different tissues. We present detailed findings from brain MRI in three mutation-positive individuals. Somatic SMO mutations that result in constitutive activation have been described in several tumors, including medulloblastoma, ameloblastoma, and basal cell carcinoma. Strikingly, the most common of these mutations is the identical nonsynonymous variant encoding p.Leu412Phe. Furthermore, this substitution has been shown to activate SMO in the absence of Hh signaling, providing an explanation for tumor development in CJS. This raises therapeutic possibilities for using recently generated Hh-pathway inhibitors. In summary, our work uncovers the major genetic cause of CJS and illustrates strategies for gene discovery in the context of low-level tissue-specific somatic mosaicism. PMID:27236920

  1. Effect of dispersive long-range corrections to the pressure tensor: The vapour-liquid interfacial properties of the Lennard-Jones system revisited

    SciTech Connect

    Martínez-Ruiz, F. J.; Blas, F. J.; Mendiboure, B.; Moreno-Ventas Bravo, A. I.

    2014-11-14

    We propose an extension of the improved version of the inhomogeneous long-range corrections of Janeček [J. Phys. Chem. B 110, 6264–6269 (2006)], presented recently by MacDowell and Blas [J. Chem. Phys. 131, 074705 (2009)] to account for the intermolecular potential energy of spherical, rigid, and flexible molecular systems, to deal with the contributions to the microscopic components of the pressure tensor due to the dispersive long-range corrections. We have performed Monte Carlo simulations in the canonical ensemble to obtain the interfacial properties of spherical Lennard-Jones molecules with different cutoff distances, r{sub c} = 2.5, 3, 4, and 5σ. In addition, we have also considered cutoff distances r{sub c} = 2.5 and 3σ in combination with the inhomogeneous long-range corrections proposed in this work. The normal and tangential microscopic components of the pressure tensor are obtained using the mechanical or virial route in combination with the recipe of Irving and Kirkwood, while the macroscopic components are calculated using the Volume Perturbation thermodynamic route proposed by de Miguel and Jackson [J. Chem. Phys. 125, 164109 (2006)]. The vapour-liquid interfacial tension is evaluated using three different procedures, the Irving-Kirkwood method, the difference between the macroscopic components of the pressure tensor, and the Test-Area methodology. In addition to the pressure tensor and the surface tension, we also obtain density profiles, coexistence densities, vapour pressure, critical temperature and density, and interfacial thickness as functions of temperature, paying particular attention to the effect of the cutoff distance and the long-range corrections on these properties. According to our results, the main effect of increasing the cutoff distance (at fixed temperature) is to sharpen the vapour-liquid interface, to decrease the vapour pressure, and to increase the width of the biphasic coexistence region. As a result, the interfacial

  2. A study of the substance dependence effect of the ethanolic extract and iridoid-rich fraction from Valeriana jatamansi Jones in mice

    PubMed Central

    Yu, Lin; Ke-ke, Xu; Chao-yong, Chen; Rui-tong, Zhang; Ming, Lan; Shao-hua, Li; Ling-zhen, Pan; Tian-e, Zhang; Zhi-yong, Yan

    2015-01-01

    Background: Recently we found the ethanolic extract and iridoid-rich fraction from Valeriana jatamansi Jones, which is a traditional Chinese medicine exhibited anxiolytic properties. Objective: This study aims to the substance dependence effect of the ethanolic extract and iridoid-rich fraction. Materials and Methods: The study included two experiments: Mice were given orally with ethanolic extract for 12 weeks or iridoid-rich fraction for 16 weeks in experiment I and experiment II, respectively. Diazepam was used as a control drug and the normal mice groups were administered with 0.5% carboxymethyl cellulose Na in both experiments. All groups were administered twice daily. Natural withdrawal symptoms, withdrawal-induced body weight change, audiogenic tail-erection test (in experiment I), and pentylenetetrazol (PTZ)-induced convulsion test (in experiment II) were measured. Results: (1) Compared to normal group in both experiments, the diazepam-treated group exhibited obvious withdrawal symptoms of tail-erection, irritability, teeth chattering, etc; the body weight of them after withdrawal had a period of significant loss (P < 0.05 or P < 0.01); and the ratios of tail-erection and seizure in two experiments were improved significantly when mice were induced by mixer noise ringtone (experiment I) or PTZ (experiment II) (P < 0.05 or P < 0.01).(2) In experiment I and II, there were no significant differences between mice that received ethanolic extract or iridoid-rich fraction and normal group in terms of natural withdrawal symptoms and withdrawal-induced body weight change (P > 0.05); in audiogenic tail-erection test, it found that the significant difference compared with normal group was just in ethanolic extract 900 mg/kg dose group on week 8 (P < 0.05); in PTZ-induced convulsion test, mice in iridoid-rich fraction groups had a slightly tail-erection and seizure, all results of them were with no significant difference compare to normal mice (P > 0.05), while

  3. Freezing of a Lennard-Jones system in an open-ended and finite-length nanopore: A molecular-dynamics study

    NASA Astrophysics Data System (ADS)

    Nishio, Kengo; Kōga, Junichiro; Yamaguchi, Toshio; Yonezawa, Fumiko

    2004-06-01

    The purpose of the present paper is to study the freezing procedures of a rare-gas system confined in a nanometer-scale pore as well as the atomic structure of a confined rare-gas solid. To this end, we carry out molecular-dynamics (MD) simulations for Lennard-Jones argon (LJ Ar) confined in an open-ended finite-length pore. Our simulation cell consists of two sections. One section contains a cubic solid with a cylindrical pore, the solid being composed of LJ atoms with interaction parameters appropriate for silica glass. The diameter and length of the cylindrical pore are 10σArAr (3.4 nm) and 20σArAr (6.8 nm), respectively. The other section is a free space into which we insert Ar atoms. The adsorption of Ar atoms into the nanopore proceeds by diffusive mass transfer from the free space. We simulate usual experimental procedures, that is, the pore is first filled with a liquid via capillary condensation, and thereafter the system is cooled. Our results show that, as the temperature is decreased, the freezing of Ar starts from the vicinity of the pore wall. The portion of solidlike Ar atoms increases gradually near the pore wall, while the Ar atoms in the central part of the pore change suddenly from liquidlike to solidlike all at the same time. We find that the structure factor of Ar confined in the pore does not change qualitatively during the freezing process, showing simple-liquid-like behaviors for both the liquid and the solid. This result agrees qualitatively with recently reported x-ray diffraction patterns of confined rare-gas solids. In a bulk LJ Ar system, on the other hand, the atomic structure changes qualitatively during the freezing process. One possible explanation for this difference is that the Ar solid in the pore consists of several different local atomic configurations, each giving distinct contributions to the structure factor of the confined Ar solid. Therefore, analyses beyond the averaged structure are helpful for extending our knowledge

  4. Effect of dispersive long-range corrections to the pressure tensor: The vapour-liquid interfacial properties of the Lennard-Jones system revisited

    NASA Astrophysics Data System (ADS)

    Martínez-Ruiz, F. J.; Blas, F. J.; Mendiboure, B.; Moreno-Ventas Bravo, A. I.

    2014-11-01

    We propose an extension of the improved version of the inhomogeneous long-range corrections of Janeček [J. Phys. Chem. B 110, 6264-6269 (2006)], presented recently by MacDowell and Blas [J. Chem. Phys. 131, 074705 (2009)] to account for the intermolecular potential energy of spherical, rigid, and flexible molecular systems, to deal with the contributions to the microscopic components of the pressure tensor due to the dispersive long-range corrections. We have performed Monte Carlo simulations in the canonical ensemble to obtain the interfacial properties of spherical Lennard-Jones molecules with different cutoff distances, rc = 2.5, 3, 4, and 5σ. In addition, we have also considered cutoff distances rc = 2.5 and 3σ in combination with the inhomogeneous long-range corrections proposed in this work. The normal and tangential microscopic components of the pressure tensor are obtained using the mechanical or virial route in combination with the recipe of Irving and Kirkwood, while the macroscopic components are calculated using the Volume Perturbation thermodynamic route proposed by de Miguel and Jackson [J. Chem. Phys. 125, 164109 (2006)]. The vapour-liquid interfacial tension is evaluated using three different procedures, the Irving-Kirkwood method, the difference between the macroscopic components of the pressure tensor, and the Test-Area methodology. In addition to the pressure tensor and the surface tension, we also obtain density profiles, coexistence densities, vapour pressure, critical temperature and density, and interfacial thickness as functions of temperature, paying particular attention to the effect of the cutoff distance and the long-range corrections on these properties. According to our results, the main effect of increasing the cutoff distance (at fixed temperature) is to sharpen the vapour-liquid interface, to decrease the vapour pressure, and to increase the width of the biphasic coexistence region. As a result, the interfacial thickness

  5. Experimental validation of an extended Jones matrix calculus model to study the 3D structural orientation of the collagen fibers in articular cartilage using polarization-sensitive optical coherence tomography

    PubMed Central

    Kasaragod, Deepa K.; Lu, Zenghai; Jacobs, James; Matcher, Stephen J.

    2012-01-01

    We report results to verify a theoretical framework to analyze the 3D depth-wise structural organization of collagen fibers in articular cartilage using polarization-sensitive optical coherence tomography. Apparent birefringence data obtained from multi-angle measurements using a time domain polarization-sensitive optical coherence tomography system has been compared with simulated data based on the extended Jones matrix calculus. Experimental data has been shown to agree with the lamellar model previously proposed for the cartilage microstructure based on scanning electron microscopy data. This tool could have potential application in mapping the collagen structural orientation information of cartilage non-invasively during arthroscopy. PMID:22435087

  6. Archive of Digitized Analog Boomer Seismic Reflection Data Collected from the Mississippi-Alabama-Florida Shelf During Cruises Onboard the R/V Kit Jones, June 1990 and July 1991

    USGS Publications Warehouse

    Sanford, Jordan M.; Harrison, Arnell S.; Wiese, Dana S.; Flocks, James G.

    2009-01-01

    In June of 1990 and July of 1991, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the shallow geologic framework of the Mississippi-Alabama-Florida shelf in the northern Gulf of Mexico, from Mississippi Sound to the Florida Panhandle. Work was done onboard the Mississippi Mineral Resources Institute R/V Kit Jones as part of a project to study coastal erosion and offshore sand resources. This report is part of a series to digitally archive the legacy analog data collected from the Mississippi-Alabama SHelf (MASH). The MASH data rescue project is a cooperative effort by the USGS and the Minerals Management Service (MMS). This report serves as an archive of high-resolution scanned Tagged Image File Format (TIFF) and Graphics Interchange Format (GIF) images of the original boomer paper records, navigation files, trackline maps, Geographic Information System (GIS) files, cruise logs, and formal Federal Geographic Data Committee (FGDC) metadata.

  7. First discovery of a new species of Newmanella Ross, 1969 (Balanomorpha: Tetraclitidae) in the western Pacific, with a note on the new status of Neonrosella Jones, 2010.

    PubMed

    Chan, Benny K K; Cheang, Chi Chiu

    2016-01-01

    The present study describes a new species of Newmanella Ross, 1969 (Thoracica: Tetraclitidae: Newmanellinae) from Taiwan. Species in this genus are believed to be distributed in tropical western Atlantic waters and the present study is the first report of a new species of Newmanella in the western Pacific. Newmanella spinosus sp. nov. is morphologically close to N. radiata Bruguiére, 1789 but it is distinguished from N. radiata by the morphology of the scutum, tergum, cirrus II, mandible and maxillule. Sequence divergence of 12S rDNA between N. radiata and N. spinosus sp. nov. reached 7.6%, suggesting these are two different species. Newmanella spinosus sp. nov. is distributed in the Philippines, Taiwan and Okinawa but is absent from Hong Kong, Hainan and China. The distribution is probably affected by the Kuroshio Current. The subfamily Newmanellinae Ross and Perreault, 1999 contains two genera, Newmanella and Yamaguchiella Ross & Perreault, 1999. Neonrosella Jones, 2010 is a subgenus of Yamaguchiella. A recent molecular analysis (Tsang et al. 2015) determined that Yamaguchiella and Neonrosella are located in two distinct and distantly-related clades within the tetraclitid clade, suggesting that the subgenus Neonrosella is not closely related to Yamaguchiella and should be elevated to generic status. PMID:27394583

  8. Development of reference states for use in absolute free energy calculations of atomic clusters with application to 55-atom Lennard-Jones clusters in the solid and liquid states

    NASA Astrophysics Data System (ADS)

    Amon, L. M.; Reinhardt, W. P.

    2000-09-01

    In this paper four reference states allowing computation of the absolute internal free energies of solid and liquid clusters are introduced and implemented. Three of these are introduced for the first time. Two of these references are useful for highly fluctional liquidlike clusters while the other two are appropriate for more rigid solidlike clusters. These reference states are combined with a finite time variational method to obtain upper and lower bounds to the absolute free energies of clusters of Lennard-Jones (LJ) atoms, LJ4 and LJ55, allowing the efficiency of each of the four reference states to be elucidated. The optimal references are then applied to obtain upper and lower bounds to the internal free energies (the absolute free energy in the cluster center of mass frame) of LJ55 over a series of fixed temperatures including the solid-liquid coexistence regime. The reversible scaling method, recently introduced by de Koning, Antonelli, and Yip, is then used to extend the results over a continuous range of temperatures. Estimation of the rotational free energy allows comparisons to free energies of LJ55 in the nonrotating center of mass frame as estimated by Doye and Wales.

  9. Comment on "A praxis-oriented perspective of streamflow inference from stage observations - the method of Dottori et al. (2009) and the alternative of the Jones Formula, with the kinematic wave celerity computed on the looped rating curve" by Koussis (2009)

    NASA Astrophysics Data System (ADS)

    Koussis, A. D.

    2010-06-01

    The estimation of transient streamflow from stage measurements is indeed important and the study of Dottori, Martina and Todini (2009) (henceforth DMT) is useful, however, DMT seem to miss certain of its practical aspects. The goal is to infer the discharge from measurements of the stage conveniently and with accuracy adequate for practical work. This comment addresses issues of the applicability of the DMT method in the field. DMT also advocate their method as a replacement of the widely used Jones Formula. The Jones Formula was modified by Thomas (Henderson, 1966) to include the temporal derivative of the depth, instead of the spatial one, to specifically allow discharge estimation from at-a-section stage observations. The outcome of the comparison is not surprising in view of this approximation. However, this discussion intends to show that, properly evaluated, the praxis-oriented Jones Formula, which did well in the tests, can perform better than DMT imply. It will be also documented that the DMT methodology relates to a known method for computing flood depth profiles.

  10. Spencer Jones, Sir Harold (1890-1960)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    Astronomer, born in London, England. He was chief assistant to Frank Dyson at Greenwich and worked at the Royal Observatory at the Cape of Good Hope. Following in the tracks of DAVID GILL, he repeated Gill's photographic survey of the southern sky (Cape Photographic Catalogue, CPC). He then organized the international project to determine Earth-Sun distance by repeated measurements of the asteroi...

  11. Computation of methodology-independent single-ion solvation properties from molecular simulations. IV. Optimized Lennard-Jones interaction parameter sets for the alkali and halide ions in water

    SciTech Connect

    Reif, Maria M.; Huenenberger, Philippe H.

    2011-04-14

    The raw single-ion solvation free energies computed from atomistic (explicit-solvent) simulations are extremely sensitive to the boundary conditions and treatment of electrostatic interactions used during these simulations. However, as shown recently [M. A. Kastenholz and P. H. Huenenberger, J. Chem. Phys. 124, 224501 (2006); M. M. Reif and P. H. Huenenberger, J. Chem. Phys. 134, 144103 (2010)], the application of appropriate correction terms permits to obtain methodology-independent results. The corrected values are then exclusively characteristic of the underlying molecular model including in particular the ion-solvent van der Waals interaction parameters, determining the effective ion size and the magnitude of its dispersion interactions. In the present study, the comparison of calculated (corrected) hydration free energies with experimental data (along with the consideration of ionic polarizabilities) is used to calibrate new sets of ion-solvent van der Waals (Lennard-Jones) interaction parameters for the alkali (Li{sup +}, Na{sup +}, K{sup +}, Rb{sup +}, Cs{sup +}) and halide (F{sup -}, Cl{sup -}, Br{sup -}, I{sup -}) ions along with either the SPC or the SPC/E water models. The experimental dataset is defined by conventional single-ion hydration free energies [Tissandier et al., J. Phys. Chem. A 102, 7787 (1998); Fawcett, J. Phys. Chem. B 103, 11181] along with three plausible choices for the (experimentally elusive) value of the absolute (intrinsic) hydration free energy of the proton, namely, {Delta}G{sub hyd} {sup O-minus} [H{sup +}]=-1100, -1075 or -1050 kJ mol{sup -1}, resulting in three sets L, M, and H for the SPC water model and three sets L{sub E}, M{sub E}, and H{sub E} for the SPC/E water model (alternative sets can easily be interpolated to intermediate {Delta}G{sub hyd} {sup O-minus} [H{sup +}] values). The residual sensitivity of the calculated (corrected) hydration free energies on the volume-pressure boundary conditions and on the effective

  12. Bob Jones University v. United States: Interpretation and Conclusions.

    ERIC Educational Resources Information Center

    Hanna, Stanley J.

    1983-01-01

    The Supreme Court decision upholding the authority of the Internal Revenue Service to revoke the tax-exempt status of a university with discriminatory policies is reviewed and interpreted as protecting the redress of past racial inequities in education against interference even from constitutionally guaranteed free religious exercise. (MJL)

  13. Sy Montgomery: Part Indiana Jones and Part Emily Dickinson

    ERIC Educational Resources Information Center

    Young, Terrell A.

    2008-01-01

    As important as accuracy may be to nonfiction writers, few have taken such risks as Sy Montgomery in gathering information for her articles, books, and films. In this profile article, Young recounts many of the risks and adventures Montgomery has taken for the sake of accurate and impassioned writing. Montgomery says, "I consider my books love…

  14. Equilibrium fluctuations of the Lennard-Jones cluster surface

    NASA Astrophysics Data System (ADS)

    Zhukhovitskii, D. I.

    2008-11-01

    Spectra of the cluster surface equilibrium fluctuations are treated by decomposition into the bulk and net capillary ones. The bulk fluctuations without capillary ones are simulated by the surface of a cluster truncated by a sphere. The bulk fluctuation spectrum is shown to be generated primarily by the discontinuity in the spatial distribution of cluster internal particles. The net capillary fluctuation slice spectrum is obtained in molecular dynamics simulation by subtraction of the bulk fluctuation spectrum from the total one. This net spectrum is in the best agreement with a theoretical estimation if we assume the intrinsic surface tension to be independent of the wave number. The wave number cutoff is brought in balance with the intrinsic surface tension and excess surface area induced by the capillary fluctuations. It is shown that the ratio of the ordinary surface tension to the intrinsic one can be considered as a universal constant independent of the temperature and cluster size.

  15. Bridget Jones Meets Mr. Darcy: Challenges of Contemporary Fiction

    ERIC Educational Resources Information Center

    Alsop, Justine

    2007-01-01

    This exploratory study seeks to investigate the collection practices of English Literature librarians with regard to contemporary fiction, including popular genres such as detective fiction and "chick lit". Results of an online survey suggest literature librarians are increasingly receptive to the acquisition of popular genres and identify the…

  16. CCD Double Star Measures: Jack Jones Observatory Report #2

    NASA Astrophysics Data System (ADS)

    Jones, James L.

    2009-10-01

    This paper submits 44 CCD measurements of 41 multiple star systems for inclusion in the WDS. Observations were made during the calendar year 2008. Measurements were made using a CCD camera and an 11" Schmidt-Cassegrain telescope. Brief discussions of pertinent observations are included.

  17. CD Double Star Measures: Jack Jones Memorial Observatory Report #3

    NASA Astrophysics Data System (ADS)

    Jones, James L.

    2010-10-01

    This paper submits 114 CCD measurements of 92 multiple star systems for inclusion in the WDS. Observations were made during the calendar year 2007. Measurements were obtained using either an SBIG ST-7 CCD camera or an SBIG ST-8 CCD camera and an 11-inch SCT. Selected double stars are discussed. Negative findings are included for certain stars.

  18. Idiosyncratic risk in the Dow Jones Eurostoxx50 Index

    NASA Astrophysics Data System (ADS)

    Daly, Kevin; Vo, Vinh

    2008-07-01

    Recent evidence by Campbell et al. [J.Y. Campbell, M. Lettau B.G. Malkiel, Y. Xu, Have individual stocks become more volatile? An empirical exploration of idiosyncratic risk, The Journal of Finance (February) (2001)] shows an increase in firm-level volatility and a decline of the correlation among stock returns in the US. In relation to the Euro-Area stock markets, we find that both aggregate firm-level volatility and average stock market correlation have trended upwards. We estimate a linear model of the market risk-return relationship nested in an EGARCH(1, 1)-M model for conditional second moments. We then show that traditional estimates of the conditional risk-return relationship, that use ex-post excess-returns as the conditioning information set, lead to joint tests of the theoretical model (usually the ICAPM) and of the Efficient Market Hypothesis in its strong form. To overcome this problem we propose alternative measures of expected market risk based on implied volatility extracted from traded option prices and we discuss the conditions under which implied volatility depends solely on expected risk. We then regress market excess-returns on lagged market implied variance computed from implied market volatility to estimate the relationship between expected market excess-returns and expected market risk.We investigate whether, as predicted by the ICAPM, the expected market risk is the main factor in explaining the market risk premium and the latter is independent of aggregate idiosyncratic risk.

  19. 78 FR 49291 - Dow Jones & Company, Inc., Dow Jones Content Services Division, Including a Worker of Factiva...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-13

    ... Register on July 16, 2012 (FR Volume 77, Pages 41807-41808). At the request of an American Job Center in... Aerotek, Inc. and Princeton, New Jersey; Amended Certification Regarding Eligibility To Apply for Worker.... 2273, the Department of Labor issued a Certification of Eligibility to Apply for Worker...

  20. The Southeast Consortium for Advanced Network Technologies Education: 1997 to the Present. Jones County Junior College.

    ERIC Educational Resources Information Center

    Cotten, Catherine Perry

    The Southeast Consortium for Advanced Network Technologies Education (SCANTE) is a partnership between two-year colleges, four-year colleges and universities, middle/secondary schools, and the business community in Mississippi and elsewhere. SCANTE goals include: (1) to identify and evaluate trends, applications, innovations, and curricula in the…

  1. VizieR Online Data Catalog: Close star encounters (Bailer-Jones, 2015)

    NASA Astrophysics Data System (ADS)

    Bailer-Jones, C. A. L.

    2014-11-01

    The table gives the perihelion (closest approach) parameters of stars in the Hipparcos-2 catalogue (I/311) which are found by numerical integration through a Galactic potential to approach within 10pc of the Sun. These parameters are the time (relative to the Hipparcos measurement epoch), heliocentric distance, and heliocentric speed of the star at perihelion. Uncertainties in these have been calculated by a Monte Carlo sampling of the data to give the Bayesian posterior probability density function (PDF) over the parameters. For each parameter, three summary values of this PDF are reported: the mean, the 5% lower bound, the 95% upper bound. The latter two give a Bayesian 90% confidence interval. The table also reports the probability that each star approaches the Sun within 0.5, 1.0, and 2.0pc, as well as the measured parallax, proper motion, and radial velocity (plus uncertainties) of the stars. Table 3 in the article lists the first 65 lines of this data table (mean perihelion distance below 2pc). (1 data file).

  2. Quantitative polarization and flow evaluation of choroid and sclera by multifunctional Jones matrix optical coherence tomography

    NASA Astrophysics Data System (ADS)

    Sugiyama, S.; Hong, Y.-J.; Kasaragod, D.; Makita, S.; Miura, M.; Ikuno, Y.; Yasuno, Y.

    2016-03-01

    Quantitative evaluation of optical properties of choroid and sclera are performed by multifunctional optical coherence tomography. Five normal eyes, five glaucoma eyes and one choroidal atrophy eye are examined. The refractive error was found to be correlated with choroidal birefringence, polarization uniformity, and flow in addition to scleral birefringence among normal eyes. The significant differences were observed between the normal and the glaucoma eyes, as for choroidal polarization uniformity, flow and scleral birefringence. An automatic segmentation algorithm of retinal pigment epithelium and chorioscleral interface based on multifunctional signals is also presented.

  3. Phenotypic Variation and Fitness in a Metapopulation of Tubeworms (Ridgeia piscesae Jones) at Hydrothermal Vents

    PubMed Central

    Tunnicliffe, Verena; St. Germain, Candice; Hilário, Ana

    2014-01-01

    We examine the nature of variation in a hot vent tubeworm, Ridgeia piscesae, to determine how phenotypes are maintained and how reproductive potential is dictated by habitat. This foundation species at northeast Pacific hydrothermal sites occupies a wide habitat range in a highly heterogeneous environment. Where fluids supply high levels of dissolved sulphide for symbionts, the worm grows rapidly in a “short-fat” phenotype characterized by lush gill plumes; when plumes are healthy, sperm package capture is higher. This form can mature within months and has a high fecundity with continuous gamete output and a lifespan of about three years in unstable conditions. Other phenotypes occupy low fluid flux habitats that are more stable and individuals grow very slowly; however, they have low reproductive readiness that is hampered further by small, predator cropped branchiae, thus reducing fertilization and metabolite uptake. Although only the largest worms were measured, only 17% of low flux worms were reproductively competent compared to 91% of high flux worms. A model of reproductive readiness illustrates that tube diameter is a good predictor of reproductive output and that few low flux worms reached critical reproductive size. We postulate that most of the propagules for the vent fields originate from the larger tubeworms that live in small, unstable habitat patches. The large expanses of worms in more stable low flux habitat sustain a small, but long-term, reproductive output. Phenotypic variation is an adaptation that fosters both morphological and physiological responses to differences in chemical milieu and predator pressure. This foundation species forms a metapopulation with variable growth characteristics in a heterogeneous environment where a strategy of phenotypic variation bestows an advantage over specialization. PMID:25337895

  4. Benthic mineralization and solute exchange on a Celtic Sea sand-bank (Jones Bank)

    NASA Astrophysics Data System (ADS)

    Larsen, Morten; Thamdrup, Bo; Shimmield, Tracy; Glud, Ronnie N.

    2013-10-01

    Benthic carbon mineralization and solute exchange was investigated on a Celtic Sea sandbank during July 2008. The sediment on the top of the bank consisted of consolidated sand, characterized by advective porewater transport and was difficult to sample, this to some extent compromised the investigations at this site. However, intact sediment cores were sampled at 4 stations at the slopes, base of the bank and off the bank (reference site). This sediment was used to assess rates and pathways for benthic diagenesis. Total sediment O2 uptake (TOU) ranged from 5.8 to 9.0 mmol m-2 d-1 and total sediment release rates of dissolved inorganic carbon (DIC) ranged between 8.60 and 13.8 mmol m-2 d-1. Microbial denitrification and sulfate reduction accounted for <2% and 12-28% of the total benthic carbon mineralization, respectively. The remaining mineralization is ascribed to O2 and Fe/Mn respiration, respectively. Activity profiles of unsupported 210Pb from all stations indicated deep mixing, presumably caused by intense trawling activity in the area. Calculation based on satellite tracking of fishing vessels suggest that on average 33% of the sediment is affected by trawling activity every year. This is presumed to facilitate high metal respiration rates by continuously oxidizing reduced Fe that would otherwise accumulate in the sediment. Extracted porewater profiles reflected elevated NO3- levels as compared to microsensor determined NO3- profiles that were measured in parallel. We suggest that this reflects NO3- leakage from meiofauna - and that the intracellular NO3- pool in the top 5 cm of the sediment exceeds the porewater pool up to a factor of 45. However, this intracellular pool is presumably turned over at very slow rates, compared to the porewater pool subject to microbial denitrification.

  5. James B. Jones: Music Performance Faculty in Higher Education: Their Work and Satisfaction.

    ERIC Educational Resources Information Center

    Weerts, Richard

    1988-01-01

    Summarizes and critiques a dissertation that assessed the relationship between job satisfaction of music performance faculty in doctoral degree granting institutions and their perceptions of their work; departmental chairperson, and peers. Weerts criticizes the dissertation's title, grammar, writing style, and recommendations, characterizing it as…

  6. Starting Points and Destinations: Negotiating Factual and Fictional Pathways: A Response to Gilbourne, Jones and Jordan

    ERIC Educational Resources Information Center

    Wellard, Ian

    2014-01-01

    This paper provides a response to questions which emerged when reading Gilbourne et al's paper, questions it is suggested which compel us to go back to the very heart of what critical social science is (or can be) about. Central to this debate is the extent to which a perceived starting point in any investigation has implications upon the…

  7. Empirical calibration of shell chemistry of Cyprideis torosa (Jones, 1850) (Crustacea: Ostracoda)

    NASA Astrophysics Data System (ADS)

    Marco-Barba, J.; Ito, E.; Carbonell, E.; Mesquita-Joanes, F.

    2012-09-01

    Cyprideis torosa is a species of ostracode that inhabits a wide range of aquatic habitats in which its low Alk/Ca requirement is met. Its fossil remains are widely used in palaeoecological studies of coastal environments and inland salt lakes. We collected C. torosa from 20 water bodies near Valencia, Spain. Temperature, chlorophyll a concentration, electrical conductivity, and the concentration of major ions and oxygen isotopes were measured at each site. Between 2 and 20 live individuals of C. torosa were collected per site, their instar stage and sex determined and their shell chemistry (Mg/Ca, Sr/Ca and carbon and oxygen isotope composition) analyzed. Three of these sites were sampled monthly for one year, and ostracode population structure and shell chemistry (20-40 shells) were analyzed. The water chemistry varied widely between sites. TDS (total dissolved solids) ranged from 0.5 to 71.8 g/L but chloride was always the dominant anion. There is a significant positive relationship between ostracode and water δ18O except at high TDS (>20 g/L) when shell δ18O values are lower than expected. No effect of either temperature or water Mg/Ca is observed on the Mg/Ca in the ostracode calcite in waters with Mg/Ca < 6 (molar ratio). Ostracode shell Sr/Ca is strongly and significantly related to water Sr/Ca. δ13C values in C. torosa shells are ˜2‰ lower than observed δ13CDIC. These results provide new and more accurate quantification tools to reconstruct past hydrochemistry from C. torosa shells.

  8. 76 FR 13205 - Piedmont National Wildlife Refuge, Jones and Jasper Counties, GA; Final Comprehensive...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-10

    ... on April 4, 2008 (73 FR 18552). Piedmont NWR was established in 1939 through an Executive Order of... period via a Federal Register on May 13, 2010 (75 FR 26979). We received 16 comments on the Draft CCP/EA..., reptiles and amphibians. We will initiate basic inventories for fish species and invertebrates,...

  9. 75 FR 26979 - Piedmont National Wildlife Refuge, Jones and Jasper Counties, GA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-13

    ... notice in the Federal Register on April 4, 2008 (73 FR 18552). For more about the refuge and our CCP..., reptiles and amphibians. We would initiate basic inventories for fish species and invertebrates, including..., threatened, and endangered species of invertebrates, reptiles, amphibians, and bats. The invasive...

  10. Nanoscale Poiseuille flow and effects of modified Lennard-Jones potential function

    NASA Astrophysics Data System (ADS)

    Toghraie Semiromi, D.; Azimian, A. R.

    2010-08-01

    Numerical simulation of Poiseuille flow of liquid Argon in a nanochannel using the non-equilibrium molecular dynamics simulation (NEMD) is performed. The nanochannel is a three-dimensional rectangular prism geometry where the concerned numbers of Argon atoms are 2,700, 2,550 and 2,400 at 102, 108 and 120 K. Poiseuille flow is simulated by embedding the fluid particles in a uniform force field. An external driving force, ranging from 1 to 11 PN (Pico Newton), is applied along the flow direction to inlet fluid particles during the simulation. To obtain a more uniform temperature distribution across the channel, local thermostating near the wall are used. Also, the effect of other mixing rules (Lorenthz-Berthelot and Waldman-Kugler rules) on the interface structure are examined by comparing the density profiles near the liquid/solid interfaces for wall temperatures 108 and 133 K for an external force of 7 PN. Using Kong and Waldman-Kugler rules, the molecules near the solid walls were more randomly distributed compared to Lorenthz-Berthelot rule. These mean that the attraction between solid-fluid atoms was weakened by using Kong rule and Waldman-Kugler rule rather than the Lorenthz-Berthelot rule. Also, results show that the mean axial velocity has symmetrical distribution near the channel centerline and an increase in external driving force can increase maximum and average velocity values of fluid. Furthermore, the slip length and slip velocity are functions of the driving forces and they show an arising trend with an increase in inlet driving force and no slip boundary condition is satisfied at very low external force (<1 PN).

  11. Poiseuille flow of Lennard-Jones fluids in narrow slit pores

    NASA Astrophysics Data System (ADS)

    Travis, Karl P.; Gubbins, Keith E.

    2000-01-01

    We present results from nonequilibrium molecular dynamics (NEMD) simulations of simple fluids undergoing planar Poiseuille flow in a slit pore only a few molecular diameters in width. The calculations reported in this publication build on previous results by including the effects of attractive forces and studying the flow at narrower pore widths. Our aims are: (1) to examine the role of attractive forces in determining hydrodynamic properties, (2) to provide clearer evidence for the existence of a non-Markovian generalization of Newtons law, (3) to examine the slip-stick boundary conditions in more detail by using a high spatial resolution of the streaming velocity profiles, (4) to investigate the significance of the recently proposed cross-coupling coefficient on the temperature profiles. The presence of attractive interactions gives rise to interesting packing effects, but otherwise, does not significantly alter the spatial dependence of hydrodynamic quantities. We find the strongest evidence to date that Newton's Law breaks down for very narrow pores; the shear viscosity exhibits singularities. We suggest a method to test the validity of the non-Markovian generalization of Newton's Law. No-slip boundary conditions are found to apply, even at these microscopic length scales, provided one takes into account the finite size of the wall atoms. The effects of any strain rate induced coupling to the heat flow are found to be insignificant.

  12. Comment on Cross, Fine, Jones, and Walsh (2012): We Are Now on the Same Page

    ERIC Educational Resources Information Center

    Goldstein, Seth L.

    2012-01-01

    Role conflict has been an issue in the intervention of child abuse cases since the beginning of the alliance drawn between the legal and mental health professions. In child abuse cases, clearly defined roles will prevent an attack on the process, thereby providing successful interventions to protect children. The child advocacy center concept is…

  13. Watson-Jones Lecture, 1976. Some lesions of the brachial plexus.

    PubMed Central

    Bonney, G.

    1977-01-01

    Three types of lesion of the brachial plexus are discussed: entrapment syndrome; tumours; and traumatic lesions. In the first the importance of the pathological anatomy is stressed; in the second the rewarding results of accurate diagnosis and careful treatment are noted; and in the third the expanding possibilities of neural reconstruction and of specific treatment for pain are described. Images Fig. 1 Fig. 3 Fig. 4 Fig. 5 Fig. 8 Fig. 9 Fig. 10 PMID:879635

  14. Numerical Simulations of Narrow Angle Tailed Radio Sources : The Jones and Owen Model

    NASA Astrophysics Data System (ADS)

    Norman, Michael L.; Balsara, Dinshaw; O'Dea, Chris

    1994-05-01

    In previous work, Balsara and Norman (1992), we had focussed on simulating narrow angle tailed radio sources as fluid beams that are bent by the ram pressure of a cross flowing ICM. This allowed a comparison with several observable attributes of NAT sources. In particular we were able to make estimates of bending rate, beam profile, radial evolution and formation and interspacing of knots. The previous work suffered from the fact that the ISM of the host galaxy was not represented. In this work we remove that restriction by representing the host galaxy's ISM self-consistently using the prescription given in Balsara, Livio and O'Dea (1994). We then run jets through it and compare with observations.

  15. An EQT-based cDFT approach for a confined Lennard-Jones fluid mixture

    SciTech Connect

    Motevaselian, M. H.; Mashayak, S. Y.; Aluru, N. R.

    2015-09-28

    Empirical potential-based quasi-continuum theory (EQT) provides a route to incorporate atomistic detail into continuum framework such as the Nernst-Planck equation. EQT can also be used to construct a grand potential functional for classical density functional theory (cDFT). The combination of EQT and cDFT provides a simple and fast approach to predict the inhomogeneous density, potential profiles, and thermodynamic properties of confined fluids. We extend the EQT-cDFT approach to confined fluid mixtures and demonstrate it by simulating a mixture of methane and hydrogen inside slit-like channels of graphene. We show that the EQT-cDFT predictions for the structure of the confined fluid mixture compare well with the molecular dynamics simulation results. In addition, our results show that graphene slit nanopores exhibit a selective adsorption of methane over hydrogen.

  16. Jones Memorial Lecture in Deafness between Two Worlds: A Hard of Hearing Perspective.

    ERIC Educational Resources Information Center

    Warick, Ruth

    1994-01-01

    This address first outlines identity issues faced by Canadians who are hard of hearing in communicating with and/or belonging to larger groups that are either deaf or hearing. It then looks at particular difficulties experienced by hard of hearing individuals in the areas of education, employment, and health care. (DB)

  17. Description of nymphal instars of Ornithodoros mimon Kohls, Clifford & Jones, 1969 (Acari: Argasidae).

    PubMed

    Landulfo, Gabriel Alves; Pevidor, Luisa Viana; Luz, Hermes Ribeiro; Faccini, João Luiz Horácio; Nunes, Pablo Henrique; Barros-Battesti, Darci Moraes

    2013-01-01

    Ornithodoros mimon is an argasid tick common on Chiroptera in the Neotropical region, where it also bites humans aggressively. Here we describe for the first time all nymphal instars (N1, N2 and N3) of O. mimon based on optical and scanning electron microscopy. Although the nymphal instars of O. mimon resemble each other closely, there are characters that differentiate them: the N3 are taller that N1 and N2; the genital primordium occurs in some N2 and all N3; the spiracular plate in N1 and N2 is cone-like, but in N3 it is semicircular; and the submarginal dorsal groove is less distinct in N1 but more evident in N3. Nymphs of 0. mimon closely resemble the bat-associated species of the genus Ornithodoros included in the Alectorobius group. We review prior descriptions of nymphs of the Alectorobius group and make comparisons with nymphs of O. minon, highlighting characters with diagnostic information, such as the idiosomal shape, presence of discs and hood and absence subapical protuberance of tarsus I. The description of nymphal instars of O. mimon herein presented, improves the taxonomy of the family Argasidae, performing a work more detailed about the immature stage of this species. PMID:26106682

  18. 75 FR 43563 - Dow Jones & Company, Sharon Pennsylvania Print Plant a Subsidiary of News Corporation, West...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-26

    ... June 7, 2010 (75 FR 32224). The workers are engaged in the production of print publications. Pursuant... News Corporation, West Middlesex, Pennsylvania; Notice of Negative Determination Regarding Application... subsidiary of News Corporation, West Middlesex, Pennsylvania, was based on the finding that the...

  19. The Barrie Jones Lecture—Eye care for the neglected population: challenges and solutions

    PubMed Central

    Rao, G N

    2015-01-01

    Globally, pockets of ‘neglected populations' do not have access to basic health-care services and carry a much greater risk of blindness and visual impairment. While large-scale public health approaches to control blindness due to vitamin A deficiency, onchocerciasis, and trachoma are successful, other causes of blindness still take a heavy toll in the population. High-quality comprehensive eye care that is equitable is the approach that needs wide-scale application to alleviate this inequity. L V Prasad Eye Institute of India developed a multi-tier pyramidal model of eye care delivery that encompasses all levels from primary to advanced tertiary (quaternary). This has demonstrated the feasibility of ‘Universal Eye Health Coverage' covering promotive, preventive, corrective, and rehabilitative aspects of eye care. Using human resources with competency-based training, effective and cost-effective care could be provided to many disadvantaged people. PMID:25567375

  20. Corynebacterium aurimucosum sp. nov. and emended description of Corynebacterium minutissimum Collins and Jones (1983).

    PubMed

    Yassin, A F; Steiner, U; Ludwig, W

    2002-05-01

    Two coryneform bacteria isolated from human clinical specimens were characterized by phenotypic and molecular taxonomic methods. Chemotaxonomic investigations revealed the presence of cell-wall chemotype IV and short-chain mycolic acids consistent with the genus Corynebacterium sensu stricto. Comparative 16S rRNA gene sequence analysis showed that the two strains are genealogically highly related (99.8% sequence similarity) and constitute a new subline within the genus Corynebacterium, with Corynebacterium minutissimum as their nearest phylogenetic neighbours (98.8% sequence similarity). However, DNA-DNA hybridization experiments demonstrated unambiguously that the isolates are genealogically distinct from Corynebacterium minutissimum (42% homology). Biochemical testing indicated that the two isolates were hardly differentiated from Corynebacterium minutissimum. Based on both phenotypic and phylogenetic evidence it is proposed that these isolates be classified as a new species, Corynebacterium aurimucosum sp. nov. The type strain of Corynebacterium aurimucosum is represented by strain IMMIB D-1488T (= DSM 44532T = NRRL B-24143T). PMID:12054216

  1. The Barrie Jones Lecture-Eye care for the neglected population: challenges and solutions.

    PubMed

    Rao, G N

    2015-01-01

    Globally, pockets of 'neglected populations' do not have access to basic health-care services and carry a much greater risk of blindness and visual impairment. While large-scale public health approaches to control blindness due to vitamin A deficiency, onchocerciasis, and trachoma are successful, other causes of blindness still take a heavy toll in the population. High-quality comprehensive eye care that is equitable is the approach that needs wide-scale application to alleviate this inequity. L V Prasad Eye Institute of India developed a multi-tier pyramidal model of eye care delivery that encompasses all levels from primary to advanced tertiary (quaternary). This has demonstrated the feasibility of 'Universal Eye Health Coverage' covering promotive, preventive, corrective, and rehabilitative aspects of eye care. Using human resources with competency-based training, effective and cost-effective care could be provided to many disadvantaged people. PMID:25567375

  2. A multiscale transport model for Lennard-Jones binary mixtures based on interfacial friction.

    PubMed

    Bhadauria, Ravi; Aluru, N R

    2016-08-21

    We propose a one-dimensional isothermal hydrodynamic transport model for non-reacting binary mixtures in slit shaped nanochannels. The coupled species momentum equations contain viscous dissipation and interspecies friction term of Maxwell-Stefan form. Species partial viscosity variations in the confinement are modeled using the van der Waals one fluid approximation and the local average density method. Species specific macroscopic friction coefficient based Robin boundary conditions are provided to capture the species wall slip effects. The value of this friction coefficient is computed using a species specific generalized Langevin formulation. Gravity driven flow of methane-hydrogen and methane-argon mixtures confined between graphene slit shaped nanochannels are considered as examples. The proposed model yields good quantitative agreement with the velocity profiles obtained from the non-equilibrium molecular dynamics simulations. The mixtures considered are observed to behave as single species pseudo fluid, with the interfacial friction displaying linear dependence on molar composition of the mixture. The results also indicate that the different species have different slip lengths, which remain unchanged with the channel width. PMID:27544095

  3. VizieR Online Data Catalog: IRAC point sources for M32 (Jones+, 2015)

    NASA Astrophysics Data System (ADS)

    Jones, O. C.; McDonald, I.; Rich, R. M.; Kemper, F.; Boyer, M. L.; Zijlstra, A. A.; Bendo, G. J.

    2015-06-01

    Spitzer observations of M32 (Programme Identification [PID] 3400, PI. M. Rich) were obtained on 2005 January 18 UT with IRAC at 3.6, 4.5, 5.8, and 8um. For each IRAC channel, 4 (5.2-arcminx5.2arcmin) frames at 23 dither positions were taken in a cycling pattern with 30-s exposures to build redundancy against outliers and artefacts, resulting in total integration time on M32 of 2760s over most of the map. Observations were centred at RA=00:42:41.6, DE=+40:55:53.6 (J2000.0) and cover an area of approximately 6-arcminx7-arcmin in all four IRAC channels around the centre of M32, plus an off-field region (offset by one pointing) of the same size to the north-west for IRAC bands 2 and 4 or south-east for IRAC bands 1 and 3. (1 data file).

  4. Google Trends: Ready for real-time suicide prevention or just a Zeta-Jones effect? An exploratory study.

    PubMed

    Fond, Guillaume; Gaman, Alexandru; Brunel, Lore; Haffen, Emmanuel; Llorca, Pierre-Michel

    2015-08-30

    Two studies have shown that increasing the consultation of the word "suicide" in the Google search engine was associated with a subsequent increase in the prevalence of suicide attempts. The main goal of this article was to explore the trends generated by a key-word search associated with suicide, depression and bipolarity in an attempt to identify general trends (disorders epidemics in the population/"real events" vs newsworthy advertisement/"media event"). Based on previous studies, the frequency of the search words "how to suicide" and "commit suicide" were analyzed for suicide, as well as "depression" (for depressive disorders) and "bipolar disorder". Together, these analyses suggest that the search for the words "how to suicide" or "commit suicide" on the Google search engine may be a good indicator for suicide prevention policies. However, the tool is not developed enough to date to be used as a real time dynamic indicator of suicide epidemics. The frequency of the search for the word "suicide" was associated with those for "depression" but not for "bipolar disorder", but searches for psychiatric conditions seem to be influenced by media events more than by real events in the general population. PMID:26003510

  5. Conformation of a flexible chain in explicit solvent: exact solvation potentials for short Lennard-Jones chains.

    PubMed

    Taylor, Mark P; Adhikari, Shishir R

    2011-07-28

    The average conformation of a flexible chain molecule in solution is coupled to the local solvent structure. In a dense solvent, local chain structure often mirrors the pure solvent structure, whereas, in a dilute solvent, the chain can strongly perturb the solvent structure which, in turn, can lead to either chain expansion or compression. Here we use Monte Carlo (MC) simulation to study such solvent effects for a short Lennard-Lones (LJ) chain in monomeric LJ solvent. For an n-site chain molecule in solution these many-body solvent effects can be formally mapped to an n-body solvation potential. We have previously shown that for hard-sphere and square-well chain-in-solvent systems this n-body potential can be decomposed into a set of two-body potentials. Here, we show that this decomposition is also valid for the LJ system. Starting from high precision MC results for the n = 5 LJ chain-in-solvent system, we use a Boltzmann inversion technique to compute numerically exact sets of two-body solvation potentials which map the many-body chain-in-solvent problem to a few-body single-chain problem. We have carried out this mapping across the full solvent phase diagram including the dilute vapor, dense liquid, and supercritical regions and find that these sets of solvation potentials are able to encode the complete range of solvent effects found in the LJ chain-in-solvent system. We also show that these two-site solvation potentials can be used to obtain accurate multi-site intramolecular distribution functions and we discuss the application of these exact short chain potentials to the study of longer chains in solvent. PMID:21806157

  6. Identification of new cytotypes of Valeriana jatamansi Jones, 1970 (Valerianaceae) from North-Western Himalayan region of India.

    PubMed

    Rani, Savita; Sharma, Tilak Raj; Kapila, Rakesh; Chahota, Rakesh Kumar

    2015-01-01

    Valeriana jatamansi, a medicinally important species of the family Valerianaceae, has been cytologically studied in different geographical areas of North-Western Himalayan region of India. The tetraploid cytotype with chromosome numbers 2n=32 is in conformity with the earlier reports of the species from different parts of the world. An octoploid cytotype (2n=64) makes a new addition for the species on a worldwide basis, whereas the diploid cytotype (2n=16) is new to India have been reported for the first time in India. These cytotypes (2n=16, 32, 64) show significant variations with respect to morphology as well as geographical distribution in the Western Indian Himalayas. Further, anomalous populations have been marked with meiotic abnormalities in the form of cytomixis, chromosomal stickiness, unoriented bivalents, formation of laggards and bridges resulting in abnormal microsporogenesis, and production of heterogeneous-sized fertile pollen grains along with reduced pollen fertility. PMID:26753070

  7. Connection between the energy landscape and glass transition in a two-dimensional Lennard-Jones mixture

    NASA Astrophysics Data System (ADS)

    Somer, Frank

    2005-03-01

    Results of recent molecular dynamics simulations of a two-dimensional glass forming system are presented. The system's inherent structures are investigated over a wide range of temperature and cooling rate and compared to previous results for three-dimensional liquids and glasses. A method for analyzing the regions of the energy landscape sampled under various conditions is introduced and used to characterize the glass transition. Connections with inherent-structures theory, mode-coupling theory, and spatially inhomogeneous dynamics are discussed.

  8. Identification of new cytotypes of Valeriana jatamansi Jones, 1970 (Valerianaceae) from North-Western Himalayan region of India

    PubMed Central

    Rani, Savita; Sharma, Tilak Raj; Kapila, Rakesh; Chahota, Rakesh Kumar

    2015-01-01

    Abstract Valeriana jatamansi, a medicinally important species of the family Valerianaceae, has been cytologically studied in different geographical areas of North-Western Himalayan region of India. The tetraploid cytotype with chromosome numbers 2n=32 is in conformity with the earlier reports of the species from different parts of the world. An octoploid cytotype (2n=64) makes a new addition for the species on a worldwide basis, whereas the diploid cytotype (2n=16) is new to India have been reported for the first time in India. These cytotypes (2n=16, 32, 64) show significant variations with respect to morphology as well as geographical distribution in the Western Indian Himalayas. Further, anomalous populations have been marked with meiotic abnormalities in the form of cytomixis, chromosomal stickiness, unoriented bivalents, formation of laggards and bridges resulting in abnormal microsporogenesis, and production of heterogeneous-sized fertile pollen grains along with reduced pollen fertility. PMID:26753070

  9. VizieR Online Data Catalog: Galactic and MC O-AGBs and RSGs stars (Jones+, 2012)

    NASA Astrophysics Data System (ADS)

    Jones, O. C.; Kemper, F.; Sargent, B. A.; McDonald, I.; Gielen, C.; Woods, P. M.; Sloan, G. C.; Boyer, M. L.; Zijlstra, A. A.; Clayton, G. C.; Kraemer, K. E.; Srinivasan, S.; Ruffle, P. M. E.

    2015-11-01

    Our sample contains 69 oxygen-rich AGB stars (O-AGB) and 76 RSG stars in the Magellanic Clouds which were observed spectroscopically with Spitzer, and 131 Galactic field O-AGBs and RSGs observed with either Spitzer or ISO. The Spitzer spectra cover a wavelength range of 5.2-37.2um, while ISO spectra cover the 2.38-45.2um part of the spectrum. We combine this sample with 39 spectra from 14 GGCs to extend the low end of the metallicity range. (5 data files).

  10. A Comparison of Life Goals, Attitudes and Perceptions of Home Economics Majors at Bob Jones University and 1862 Colleges and Universities in the Southern Region.

    ERIC Educational Resources Information Center

    Wyatt, Marcella Anne

    To develop a profile of home economics majors at a private Christian university and to compare their goals, attitudes and perceptions with those of 1126 home economics majors at the 37 land grant institutions participating in the S-114 Southern Regional Study, the S-114 questionnaire is used to survey all 247 home economics majors at Bob Jones…

  11. VizieR Online Data Catalog: Palomar/MSU and SDSS-DR7 M dwarfs with GALEX obs. (Jones+, 2016)

    NASA Astrophysics Data System (ADS)

    Jones, D. O.; West, A. A.

    2016-03-01

    To compare magnetic activity in the optical with UV activity, we matched the SDSS Data Release 7 (DR7; Abazajian et al. 2009, II/294) M dwarf spectroscopic catalog (West et al. 2011, J/AJ/141/97; R~2000) to GALEX data from Data Releases 6 and 7 (NUV: ~1750-2750Å and FUV: ~1350-1750Å; see II/312). The DR7 M dwarf catalog consists of 70841 SDSS M dwarfs with spectral types verified by eye. We supplemented the SDSS sample with the Palomar/MSU Nearby-Star Spectroscopic Survey (PMSU; Reid et al. 1995, III/198), which contains 1684 nearby low-mass stars (1415 M dwarfs) as part of the northern sample (δ>-30°) and 282 nearby low-mass stars (228 M dwarfs) as part of the southern sample. (2 data files).

  12. Official 1997 Mock Trial Materials for the Twenty-Fifth Annual District of Columbia Public Schools Mock Trail Program: Ricki Jones, Plaintiff v. Metro City, Defendant.

    ERIC Educational Resources Information Center

    Henderson, Kamina A.; Roe, Richard L.

    This packet of materials contains law-related materials for students to conduct a mock trial. In this case a faulty water system, containing the parasite Pindia, contributed to the death of an AIDS patient. Statements from the plaintiff, a representative of the Metro City Water Department, health officials, and others are presented. New releases,…

  13. Delineation of tidal scour through marine geophysical techniques at Sloop Channel and Goose Creek bridges, Jones Beach State Park, Long Island, New York

    USGS Publications Warehouse

    Stumm, Frederick; Chu, Anthony; Reynolds, Richard J.

    2001-01-01

    Inspection of the Goose Creek Bridge in southeastern Nassau County in April 1998 by the New York State Department of Transportation (NYSDOT) indicated a separation of bridge piers from the road bed as a result of pier instability due to apparent seabed scouring by tidal currents. This prompted a cooperative study by the U.S. Geological Survey with the NYSDOT to delineate the extent of tidal scour at this bridge and at the Sloop Channel Bridge, about 0.5 mile to the south, through several marine- geophysical techniques. These techniques included use of a narrow-beam, 200-kilohertz, research-grade fathometer, a global positioning system accurate to within 3 feet, a 3.5 to 7-kilohertz seismic-reflection profiler, and an acoustic Doppler current profiler (ADCP). The ADCP was used only at the Sloop Channel Bridge; the other techniques were used at both bridges. Results indicate extensive tidal scour at both bridges. The fathometer data indicate two major scour holes nearly parallel to the Sloop Channel Bridge -- one along the east side, and one along the west side (bridge is oriented north-south). The scour-hole depths are as much as 47 feet below sea level and average more than 40 feet below sea level; these scour holes also appear to have begun to connect beneath the bridge. The deepest scour is at the north end of the bridge beneath the westernmost piers. The east-west symmetry of scour at Sloop Channel Bridge suggests that flood and ebb tides produce extensive scour. The thickness of sediment that has settled within scour holes could not be interpreted from fathometer data alone because fathometer frequencies cannot penetrate beneath the sea-floor surface. The lower frequencies used in seismic-reflection profiling can penetrate the sea floor and underlying sediments, and indicate the amount of infilling of scour holes, the extent of riprap under the bridge, and the assemblages of clay, sand, and silt beneath the sea floor. The seismic- reflection surveys detected 2 to 5 feet of sediment filling the scour holes at both bridges; this indicates that the fathometer surveys were undermeasuring the effective depth of bridge scour by 2 to 5 feet through their inability to penetrate the infilled sediment. Several clay layers with thicknesses of 3 to 5 feet were detected beneath the sea floor at both bridges. Most of the piers beneath Sloop Channel Bridge appear to be surrounded by riprap, but, in several areas the riprap appears to be slumping or sliding into adjacent scour holes. Similar slumping was indicated at the Goose Creek Bridge. Most of the sediment underlying the sea floor at both bridges is interpreted as a fine-grained, cross-bedded sand. DCP data from Sloop Channel indicate that the constricted flow beneath the bridge increases the horizontal current velocities from 2 to 6 feet per second. Total measured discharge beneath Sloop Channel Bridge was 41,800 cubic feet per second at flood tide and 27,600 cubic feet per second at ebb tide.

  14. Matters of Cost: Part I. Jones Learns about Balance Sheets: Part II. A Look at Budgetary Control: Part III. The Supervisor's "Do-It-Yourself" Series 3.

    ERIC Educational Resources Information Center

    Smith, J. E.; And Others

    This guide, which is intended for new supervisors and managers to use in an independent study setting, deals with costing, balance sheets, and budgetary control. The first section, "Matters of Cost" by J. E. and J. F. Smith, deals with the following topics: profits and productivity, principles of costing, cost control and cost reduction, fixed and…

  15. Early Indians Use Jones Valley. (Reading for "The South: Birmingham Case Study and the South as a Region". Grade Five (Unit IV) Project Social Studies.)

    ERIC Educational Resources Information Center

    Minnesota Univ., Minneapolis. Project Social Studies Curriculum Center.

    Readings designed to accompany Unit IV, (ED 069 562) which is intended for fifth grade students, describe the Birmingham region from 1812 to 1872. Nine themes in the study illustrate settlement in the valley, early growth in Birmingham, and the changing use of the area in terms of different perceptions of natural resources. Technical advancement…

  16. Surface induced nucleation of a Lennard-Jones system on an implicit surface at sub-freezing temperatures: A comparison with the classical nucleation theory

    NASA Astrophysics Data System (ADS)

    Loeffler, Troy D.; Chen, Bin

    2013-12-01

    The aggregation-volume-bias Monte Carlo method was employed to study surface-induced nucleation of Lennard-Jonesium on an implicit surface below the melting point. It was found that surfaces catalyze not only the formation of the droplets (where the nucleation free energy barriers were shown to decrease with increasing surface interaction strength), but also the transition of these droplets into crystal structures due to the surface-induced layering effects. However, this only occurs under suitable interaction strength. When surface attraction is too strong, crystallization is actually inhibited due to the spread of the particles across the surface and corresponding formation of two-dimensional clusters. The simulation results were also used to examine the bulk-droplet based classical nucleation theory for surface-induced nucleation, particularly the additional contact angle term used to describe both the nucleation free energy barrier heights and the critical cluster sizes compared to its homogeneous nucleation formalism. Similar to what has been found previously for homogeneous nucleation, the theory does poorly toward the high-supersaturation region when the critical clusters are small and fractal, but the theoretical predictions on both barrier heights and critical cluster sizes improve rapidly with the decrease of the supersaturation.

  17. Probabilistic description of ice-supersaturated layers in low resolution profiles of relative humidity N. C. Dickson, K. Gierens, H. L. Rogers, R. L. Jones

    NASA Astrophysics Data System (ADS)

    Dickson, N.

    2009-12-01

    The global observation, assimilation and prediction in numerical models of ice super-saturated (ISS) regions (ISSR) are crucial if the climate impact of aircraft condensations trails (contrails) is to be fully understood, and if, for example, contrail formation is to be avoided through aircraft operational measures. A robust assessment of the global distribution of ISSR will further this debate, and ISS event occurrence, frequency and spatial scales have recently attracted significant attention. The mean horizontal size of ISSR is 150 km (±250km) although 12-14% of ISS events occur on horizontal scales of less than 5km. The average vertical thickness of ISS layers is 600-800m (±575m) but layers ranging from 25m to 3000m have been observed, with up to one third of ISS layers thought to be less than 100m deep. Given their small scales compared to typical atmospheric model grid sizes, statistical representations of the spatial scales of ISSR are required, in both horizontal and vertical dimensions, if global occurrence of ISSR is to be adequately represented in climate models. This paper uses radiosonde launches made by the UK Meteorological Office, from the British Isles, Gibraltar, St. Helena and the Falkland Islands between January 2002 and December 2006, to investigate the probabilistic occurrence of ISSR. Specifically each radiosonde profile is divided into 50 and 100 hPa pressure layers, to emulate the coarse vertical resolution of some atmospheric models. Then the high resolution observations contained within each thick pressure layer are used to calculate an average relative humidity and an ISS fraction for each individual thick pressure layer. These relative humidity pressure layer descriptions are then linked through a probability function to produce an s-shaped curve describing the ISS fraction in any average relative humidity pressure layer. An empirical investigation has shown that this one curve is statistically valid for mid-latitude locations, irrespective of season and altitude, however, pressure layer depth is an important variable. Using this empirical understanding of the s-shaped relationship a mathematical model was developed to represent the ISS fraction within any arbitrary thick pressure layer. Here the statistical distributions of actual high resolution RHi observations in any thick pressure layer, along with an error function, are used to mathematically describe the s-shape. Two models were developed to represent both 50 and 100 hPa pressure layers with each reconstructing their respective s-shapes within 8-10% of the empirical curves. These new models can be used, to represent the small scale structures of ISS events, in modelled data where only low vertical resolution is available. This will be useful in understanding, and improving the global distribution, both observed and forecasted, of ice super-saturation.

  18. The Curriculum for the 1990s: A New Package or a New Spirit? The A. W. Jones Lecture, 1989. Occasional Paper No. 12.

    ERIC Educational Resources Information Center

    Beare, Hedley

    An analysis of deficiencies of recent curriculum reform efforts in Australia and recommendations for improvement are presented in this paper. Despite criticisms that have been levelled at the educational system, a conclusion is that educators are well prepared to meet the demands for restructuring. What is needed is not merely restructuring, but a…

  19. Fitting the Off-Diagonal DEDICOM Model in the Least-Squares Sense by a Generalization of the Harman and Jones MINRES Procedure of Factor Analysis.

    ERIC Educational Resources Information Center

    ten Berge, Jos M. F.; Kiers, Henk A. L.

    1989-01-01

    The DEDICOM (decomposition into directional components) model provides a framework for analyzing square but asymmetric matrices of directional relationships among "n" objects or persons in terms of a small number of components. One version of DEDICOM ignores the diagonal entries of the matrices. A straightforward computational solution is…

  20. 20 CFR 416.315 - Who may sign an application.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... for Mr. Jones. Mr. Jones, who lives alone, just suffered a heart attack and is in the hospital. He..., a loss of benefits would result if it is later determined that Mr. Jones is in fact disabled....

  1. 20 CFR 416.315 - Who may sign an application.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... for Mr. Jones. Mr. Jones, who lives alone, just suffered a heart attack and is in the hospital. He..., a loss of benefits would result if it is later determined that Mr. Jones is in fact disabled....

  2. 20 CFR 416.315 - Who may sign an application.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... for Mr. Jones. Mr. Jones, who lives alone, just suffered a heart attack and is in the hospital. He..., a loss of benefits would result if it is later determined that Mr. Jones is in fact disabled....

  3. 20 CFR 416.315 - Who may sign an application.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... for Mr. Jones. Mr. Jones, who lives alone, just suffered a heart attack and is in the hospital. He..., a loss of benefits would result if it is later determined that Mr. Jones is in fact disabled....

  4. Reflective Practice in Nursing (Third edition) Howatson-Jones Lioba Reflective Practice in Nursing (Third edition) 200pp £19.99 Learning Matters/Sage 9781473919297 1473919290 [Formula: see text].

    PubMed

    2016-08-01

    Reflection and reflexivity are essential skills in all fields of nursing practice. However, these skills are not always inherent, and many students need preparation and guidance to develop them. PMID:27484560

  5. A new species of Polylopadium Brennan & Jones, 1961 (Acari: Trombiculidae) from cricetid rodents, Peru with description of a new character for the genus and a key to the species.

    PubMed

    Goff, M Lee; Ritzi, Chris M; Hice, Christine L

    2002-03-01

    peruensis is described as new from specimens collected from Oryzomys yunganus, Proechimys quadruplicatus, and Oryzomys megacephalus taken in Peru. A new character of a nude tactile seta on femur III is noted for the genus and a key to the species of Polylopadium is presented. PMID:11931026

  6. Molecular Force Field Development for Aqueous Electrolytes: 1. Incorporating Appropriate Experimental Data and the Inadequacy of Simple Electrolyte Force Fields Based on Lennard-Jones and Point Charge Interactions with Lorentz-Berthelot Rules.

    PubMed

    Moučka, Filip; Nezbeda, Ivo; Smith, William R

    2013-11-12

    It is known that none of the available simple molecular interaction models of aqueous electrolytes based on SPC/E water and their associated force fields are able to reproduce the concentration dependence of important thermodynamic properties of even the simplest electrolyte, NaCl, at ambient conditions over the entire experimentally accessible concentration range [ Mouc̆ka , F. ; Nezbeda , I. ; Smith , W. R. J. Chem. Phys. 2013 , 138 , 154102 ]. This paper explores the possibility of improving their performance by incorporating concentration-dependent experimental data for the total ionic chemical potential and the density into the fitting procedure, in addition to experimental values of solubility and solid chemical potential. We describe a general parameter estimation methodology for a studied class of models that incorporates the aforementioned experimental data. When the entire concentration range is considered, although the resulting force field is a slight improvement over others currently available in the literature, overall quantitative agreement with the experimental data over this range remains unsatisfactory. This indicates an inherent limitation of such simple molecular interaction models and strongly suggests that more complex mathematical forms of such models are required to quantitatively predict the properties of aqueous electrolyte solutions when the entire concentration range is of interest. Our parameter estimation methodology is also applicable to such cases. PMID:26583422

  7. Fairy-Tale Physics Farewell to Reality Bankrupting Physics: Baggott-Unzicker-Jones Critiques Shame Physics' Shameless Media-Hype P.R. Spin-Doctoring Touting Sci-Fi Veracity-Abandonment ``Show-Biz'' Spectacle: Caveat Emptor!!!

    NASA Astrophysics Data System (ADS)

    Siegel, Edward

    2014-03-01

    Baggott[Farewell to Reality: How Fairy-Tale Physics Betrayed Search For Scientific Truth]-Unzicker [Bankrupting Physics: How Top Scientists Are Gambling Away Credibility] shame physics shameless rock-star media-hype P.R. spin-doctoring veracity-abandoning touting sci-fi show-biz aided by online proliferation of uncritical pop-sci science-writers verbal diarrhea, all spectacle vs little truth, lacking Kant-Popper skepticism/falsification, lemming-like stampedes to truth abandonment, qualified by vague adverbs: might, could, should, may,...vs factual is! Physics, motivated by financial greed, swept up in its very own hype, touts whatever next big thing/cutting-edge bombast ad infinitum/ad nauseum, turning it into mere trendy carney sideshow, full of fury(FOF) but signifying absolutely nothing! Witness: GIGO claims string-theory holographic-universe causes cuprates optical conductivity; failed Anderson RVB cuprates theory vs. Keimer discovery all cuprates ``paramagnons'' bosons aka Overhauser SDWs; Overbye NYT holographic-universe jargonial-obfuscation comments including one from APS journals editor-in-chief re. its unintelligibility, FOF but signifying absolutely nothing INTELLIGIBLE!; Bak/BNL SOC tad late rediscovery of F =ma mere renaming of Siegel acoustic-emission!; 2007 physics Nobel-prize Fert-Gruenberg rediscovery of Siegel[JMMM 7,312(78); https://www.flickr.com/search/?q=GIANT-MAGNETORESISTANCE] GMR. Each trendy latest big thing modulo lack of prior attribution aka out and out bombastic chicanery! Siegel caveat emptor ``Buzzwordism, Bandwagonism, Sloganeering for Fun Profit Survival Ego'' sociological-dysfunctionality thrives!

  8. Fairy-Tale Physics Farewell to Reality Bankrupting Physics: Baggott-Unzicker-Jones Critiques Shame Physics' Shameless Media-Hype P.R. Spin-Doctoring Touting Sci-Fi Veracity-Abandonment ``Show-Biz'' Spectacle: Caveat Emptor!!!

    NASA Astrophysics Data System (ADS)

    Siegel, Edward

    2014-03-01

    Baggott[Farewell to Reality: How Fairy-Tale Physics Betrayed Search For Scientific Truth]-Unzicker [Bankrupting Physics: How Top Scientists Are Gambling Away Credibility] shame physics shameless rock-star media-hype P.R. spin-doctoring veracity-abandoning touting sci-fi show-biz aided by online proliferation of uncritical pop-sci science-writers verbal diarrhea, all spectacle vs little truth, lacking Kant-Popper skepticism/ falsification, lemming-like stampedes to truth abandonment, qualified by vague adverbs: might, could, should, may,...vs factual is! Physics, motivated by financial greed, swept up in its very own hype, touts whatever next big thing/cutting-edge bombast ad infinitum/ad nauseum, turning it into mere trendy carney sideshow, full of fury(FOF) but signifying absolutely nothing! Witness: GIGO claims string-theory holographic-universe causes cuprates optical conductivity; failed Anderson RVB cuprates theory vs. Keimer discovery all cuprates ``paramagnons'' bosons aka Overhauser SDWs; Overbye NYT holographic-universe jargonial-obfuscation comments including one from APS journals editor-in-chief re. its unintelligibility, FOF but signifying absolutely nothing INTELLIGIBLE!; Bak/BNL SOC tad late rediscovery of F =ma mere renaming of Siegel acoustic-emission!; 2007 physics Nobel-prize Fert-Gruenberg rediscovery of Siegel[JMMM 7,312(78); https://www.flickr.com/search/?q = GIANT-MAGNETORESISTANCE] GMR. Each trendy latest big thing modulo lack of prior attribution aka out and out bombastic chicanery! Siegel caveat emptor ``Buzzwordism, Bandwagonism, Sloganeering for Fun Profit Survival Ego'' sociological-dysfunctionality thrives!

  9. Detail of bricked up storage vault opening Central of ...

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

    Detail of bricked up storage vault opening - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Brick Storage Vaults under Jones Street, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  10. 75 FR 24948 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-06

    ... G Texas Health Resources. G Wilson N. Jones Medical Center. ] G Wilson N. Jones Medical Center. 11... Rudolf Wild GmbH & Co KG. G WILD Juice B.V. 18-MAR-10 20100465 G Total System Services, Inc. G...

  11. Short philtrum

    MedlinePlus

    ... Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . 7th ed. Philadelphia, ... commercial use must be authorized in writing by ADAM Health Solutions. About MedlinePlus Site Map FAQs Contact ...

  12. Low nasal bridge

    MedlinePlus

    ... Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation. 7th ed. Philadelphia, ... commercial use must be authorized in writing by ADAM Health Solutions. About MedlinePlus Site Map FAQs Contact ...

  13. Beckwith-Wiedemann syndrome

    MedlinePlus

    ... Jones KL, Jones M, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . 7th ed. Elsevier ... commercial use must be authorized in writing by ADAM Health Solutions. About MedlinePlus Site Map FAQs Contact ...

  14. Aarskog syndrome

    MedlinePlus

    ... Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . 7th ed. Philadelphia, ... commercial use must be authorized in writing by ADAM Health Solutions. About MedlinePlus Site Map FAQs Contact ...

  15. 31 CFR 315.81 - Payment to partnerships.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... signed by a general partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and...

  16. 31 CFR 315.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... should be in the form, for example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for...

  17. 31 CFR 315.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... should be in the form, for example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for...

  18. 31 CFR 353.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for payment so signed and certified...

  19. 31 CFR 315.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... should be in the form, for example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for...

  20. 31 CFR 315.81 - Payment to partnerships.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... signed by a general partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and...

  1. 31 CFR 315.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... should be in the form, for example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for...

  2. 31 CFR 315.81 - Payment to partnerships.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... signed by a general partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and...

  3. 31 CFR 315.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... should be in the form, for example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for...

  4. 31 CFR 353.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for payment so signed and certified...

  5. 31 CFR 353.81 - Payment to partnerships.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and certified will ordinarily...

  6. 31 CFR 353.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for payment so signed and certified...

  7. 31 CFR 353.81 - Payment to partnerships.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and certified will ordinarily...

  8. 31 CFR 315.81 - Payment to partnerships.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... signed by a general partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and...

  9. 31 CFR 315.81 - Payment to partnerships.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... signed by a general partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and...

  10. 31 CFR 353.81 - Payment to partnerships.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and certified will ordinarily...

  11. 31 CFR 353.80 - Payment to corporations or unincorporated associations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... example, “The Jones Coal Company, a corporation, by John Jones, President”, or “The Lotus Club, an unincorporated association, by William A. Smith, Treasurer”. A request for payment so signed and certified...

  12. 31 CFR 353.81 - Payment to partnerships.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... partner. The signature to the request should be in the form, for example, “Smith and Jones, a partnership, by John Jones, a general partner”. A request for payment so signed and certified will ordinarily...

  13. Webbing of the fingers or toes

    MedlinePlus

    ... Carpenter syndrome Cornelia de Lange syndrome Pfeiffer syndrome Smith-Lemli-Opitz syndrome Use of the medicine hydantoin ... Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . 7th ed. Philadelphia, ...

  14. Aase syndrome

    MedlinePlus

    Aase-Smith syndrome; Hypoplastic anemia - triphalangeal thumbs, Aase-Smith type ... Jones KL, Jones MC, Del Campo M, eds. Smith's Recognizable Patterns of Human Malformation . 7th ed. Philadelphia, ...

  15. View looking SW at brick retaining wall running parallel to ...

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

    View looking SW at brick retaining wall running parallel to Jones Street showing bricked up storage vaults - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Brick Storage Vaults under Jones Street, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  16. 26 CFR 301.6316-3 - Allocation of tax attributable to foreign currency.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... amount of that currency included in gross income. (b) Example. (1) For the calendar year 1955 Mr. Jones... purposes: Fulbright grant received by Mr. Jones in nonconvertible foreign currency $8,000 Dividends received by Mr. Jones entitled to dividends-received credit 500 Compensation for personal services of...

  17. Selective Citation Mars Conclusions about Test Validity and Predictive Bias

    ERIC Educational Resources Information Center

    Kuncel, Nathan R.; Sackett, Paul R.

    2007-01-01

    Comments on the article by Vasquez and Jones, in which they put forward the argument that standardized tests do not evaluate much of anything worthwhile and do not assess merit. The current authors argue that Vasquez and Jones support their argument only through highly selective citations from the literature, and they discuss Vasquez and Jones'…

  18. 31 CFR 306.11 - Forms of registration for transferable securities.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... reference to the will. Example: Anne B. Smith, life tenant under the will of Adam A. Smith, deceased (12... preclude the right of survivorship. Examples: John A. Doe (123-45-6789) and William B. Doe as tenants in common. John A. Jones as natural guardian of Henry B. Jones, a minor, and Robert C. Jones...

  19. 31 CFR 306.11 - Forms of registration for transferable securities.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... reference to the will. Example: Anne B. Smith, life tenant under the will of Adam A. Smith, deceased (12... preclude the right of survivorship. Examples: John A. Doe (123-45-6789) and William B. Doe as tenants in common. John A. Jones as natural guardian of Henry B. Jones, a minor, and Robert C. Jones...

  20. A Planar Calculus for Infinite Index Subfactors

    NASA Astrophysics Data System (ADS)

    Penneys, David

    2013-05-01

    We develop an analog of Jones' planar calculus for II 1-factor bimodules with arbitrary left and right von Neumann dimension. We generalize to bimodules Burns' results on rotations and extremality for infinite index subfactors. These results are obtained without Jones' basic construction and the resulting Jones projections.

  1. 77 FR 44310 - Quarterly Publication of Individuals, Who Have Chosen To Expatriate, as Required by Section 6039G

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-27

    ... JANKOW DANIELLE ESTER ] JEFFERSON GEORGE KENNETH JONES DENNIS CHARLES JONES MARJEAN JONES STEPHANIE... SIMETH EVA MARIA SISMONDO SOPHIA M. SKWAROK ELEANOR HELENE SO FIONA WAI LUI SOJER CAMILLE JOAN ST CHARLES CAROLE STAR GRACE DANA WHITE STATHAM ANDREW CRAIG STATON ALICE MARY STEIN AMELIA YUEN-YU STEPHANSEN...

  2. Comment on "Column-scale unsaturated hydraulic conductivity estimates in coarse-textured homogeneous and layered soils derived under steady-state evaporation from a water table" by M. Sadeghi, M. Tuller, M.R. Gohardoust and S.B. Jones

    NASA Astrophysics Data System (ADS)

    Lehmann, Peter; Assouline, Shmuel; Or, Dani

    2015-10-01

    The authors presented a new solution for steady-state evaporation during stage II from coarse-textured porous media (under isothermal conditions) that enables to (i) compute the maximum distance Dmax between the water table and the vaporization plane (where water phase change from liquid to vapor occurs) for a certain evaporation rate e and (ii) estimate the unsaturated hydraulic conductivity K(h) as a function of capillary head h by measuring e(Dmax). The mathematical procedure presented is correct and interesting, however, the study makes various unsubstantiated claims regarding potential generalization of the results that deserve some scrutiny considering the wealth of experimental and other physically-based theoretical studies of this important phenomenon. The general outcome is that we consider the conclusion as presented in the abstract "The presented approach offers an alternative method for determination of unsaturated hydraulic conductivity of homogeneous coarse-textured soils and a new solution for prediction of the effective unsaturated hydraulic conductivity of layered coarse-textured soils" unfounded. In the comment below we address (i) the confusion between different definitions of hydraulic continuity of the liquid phase, (ii) the limited application of the method to a small range of evaporative fluxes, (iii) the plausibility of interpretations assuming hydraulic continuity across 10's of meters, (iv) the correctness of the estimations of maximum hydraulic continuity length Dmax from water table depth D for the coarse textured media considered in the study, and (v) a questionable application of the method for layered profiles. We first comment on some of the key derivations and their relations to soil properties and boundary conditions, and then discuss the physical validity of some of the generalization claims.

  3. DOD Service Academies. Status Report on Reviews of Student Treatment. Statement of Paul L. Jones, Director, Defense Force Management Issues, National Security and International Affairs Division. Testimony before the Subcommittee on Manpower and Personnel, Committee on Armed Services, U.S. Senate.

    ERIC Educational Resources Information Center

    General Accounting Office, Washington, DC. National Security and International Affairs Div.

    Preliminary results of ongoing reviews of student treatment at the U.S. Military Academy, the U.S. Naval Academy, and the U.S. Air Force Academy show the following: (1) hazing has not completely disappeared from the academies, despite prohibitions against it; (2) women and minorities have not reached the same level of achievement as white males in…

  4. AN APPLIED ONTOLOGY TO THE MID-ATLANTIC CABLE: HISTORICAL TO MODERN INFORMATICS CONSIDERATION FROM A MATH PERSPECTIVE KAIEM L. FRINK ELIZABETH CITY STATE UNIVERSITY(ECSU)KAIEM_FRINK@HOTMAIL.COM, DR. DEWAYNE B. BRANCH ECSU, DR. ROB RASKIN JET PROPULSIONS LABORATORY GLENDA THOMAS ECSU,KENNETH JONES ECSU

    NASA Astrophysics Data System (ADS)

    Frink, K.; Branch, B. D.; Raskin, R.

    2009-12-01

    As early as the 1600's scientists in various fields world to address a global human need of human communication on a global basis by implementing the trans-Atlantic cable. The Mid 4Trans-Atlantic cable is one of the earliest forms of global commutation. Here may be the first evidence of informatics needs where science, data, and engineering were collaborated across disciplines to advance a world standard of living. This work investigates what applied ontology may have been consisting with the thought pattern of such expertise who conducted informatics arguably without computers, ontology’s, and a cyber infrastructure. In modern context, an applied ontology may best represent the body of intentional learning, research and collaboration among scientists to achieve a human goal. Perhaps if such intentional non-partisan work can achieve a solution such as Trans-Atlantic Cable, climate change may benefit from intentional collaborative ontology’s and systems of multi user knowledgebase or expert informatics systems. 1Bruce C. Heezen 1924 -1977 American Geologist famous for mapping the Mid Atlantic Mountain Ridge in the 1950’s. Heezen died in 1977 on a submarine cruise to study the Mid-Atlantic ridge near Ice land aboard the NR-1 submarine. 7Marie Tharp academic background is Bachelors Degree in English, Master Degree in Geology University of Michigan, and Mathematics Degree at the University of Tulsa. Tharp worked at Lamont- Doherty Earth Observatory at Columbia University. History of the Digital Divide during the 1600’s touches on the availability of information. 3Issue of Mathematics during the 1600’s would be lack of communications and assessment. The scientific communities cannot address climate change most largely due to language barriers amongst humans. Weight per meter for the cable and the ships weight capacity in the 1600’sWeight/per meter 2w/m=X1 taking into account that maximum depths or Atlantic Ocean was unknown at that time and still is.

  5. Demonstration of high responsivity(~2.16 A/W) and detectivity(~1011 Jones) in the long wavelength (~10.2μm) from InGaAs/GaAs quantum dot infrared photodetector with quaternary InAlGaAs capping

    NASA Astrophysics Data System (ADS)

    Chakrabarti, Subhananda; Adhikary, Sourav; Halder, Nilanjan; Aytac, Yigit; Perera, A. G. U.

    2012-06-01

    The Self-assembled InGaAs/GaAs quantum dot infrared detectors (QDIPs) have emerged as a promising technology in many applications such as missile tracking, night vision, medical diagnosis, environmental monitoring etc. On account of the 3-D confinement of carriers in QDs, a number of advantages arise over the QW counterparts. Here we report a quaternary (InAlGaAs) capped In(Ga)As/GaAs QDIP. The samples were grown on a semi-insulating (001) GaAs substrate by solid source molecular beam epitaxy (MBE), and the dots were then capped with a combination of 30A quaternary (In0.21Al0.21Ga0.58As) and 500Å of GaAs layer. Both the QD layer and the combination capping were repeated for 35 periods. The device was fabricated by conventional photolithography, ICP etching and metal evaporation technique. XTEM image of the sample depicted nice stacking of defect free quantum dot layers. The dark current is symmetric both for positive and negative bias with a low dark current density of 4.32x10-6A/cm2 at 77K and 1.6 x10 -3A/cm2 at 200K at a bias of 2V. The high intense peak response observed at 10.2μm, with a very narrow spectral width (▵λ/λ) of 14% (▵λ is the FWHM), is probably due to bound-to-bound transition of carriers in the QDs. A very high responsivity of 2.16 A/W was measured at a bias of -0.40 Volt bias. The highest value of detectivity is measured to be ~1011 cm.Hz1/2/W at a bias of 0.3V.

  6. Life after weight-loss surgery

    MedlinePlus

    Mechanick JI, Youdim A, Jones DB, et al. Clinical practice guidelines for the perioperative nutritional, metabolic, and nonsurgical support of the bariatric surgery patient-2013 update: cosponsored ...

  7. 78 FR 51203 - Iowa; Major Disaster and Related Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-20

    ... determinations. DATES: Effective Date: July 31, 2013. FOR FURTHER INFORMATION CONTACT: Dean Webster, Office of...: Allamakee, Benton, Buchanan, Butler, Cedar, Clayton, Delaware, Howard, Jones, and Winneshiek Counties...

  8. 75 FR 35834 - Receipt of Applications for Endangered Species Permits

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-23

    ... Florida. Applicant: J.W. Jones Ecological Research Center, Newton, Georgia, TE66980. The applicant... (= Lampsillis) subangulata), and oval pigtoe (Pleurobema pyriforme). Applicant: Stephen Golladay,...

  9. Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, ...

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

    Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Combination Smokestack, Water Tank & Privies, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  10. 78 FR 45535 - Change in Bank Control Notices; Acquisitions of Shares of a Bank or Bank Holding Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-29

    .... Hughes, Jr., Jacksonville, Florida; J. Malcolm Jones, Jr., Jacksonville, Florida; James T. Katsur, Longwood, Florida; W. Andrew Krusen, Jr., Tampa, Florida; Allan S. Martin, Tampa, Florida; Linda C....

  11. Imagining Recovery, Resilience, and Vulnerability at 75: Perceptions of Social Work Students

    ERIC Educational Resources Information Center

    Kane, Michael N.

    2008-01-01

    BSW and MSW students (N = 183) read one of three vignettes and were asked to respond to 21 items investigating their perceptions about depression, anxiety, and resilience of the vignette's character. While the incidents in each vignette were identical, the main character was (a) a 75-year-old Mr. Jones, (b) a 75-year-old Ms. Jones, or (c) "Imagine…

  12. Simulations Help School Leaders Practice "Tough Conversations"

    ERIC Educational Resources Information Center

    Sparks, Sarah D.

    2012-01-01

    Jody F. Manning has been a superintendent in New York for more than 20 years, but his experience didn't make his conversation with the woman across the table any easier. "Terry Jones" had made three increasingly urgent phone calls asking to meet about her daughter, whose grades have been dropping precipitously. Jones talked about her daughter's…

  13. Coins of the Realm

    ERIC Educational Resources Information Center

    Marion, Stacy

    2011-01-01

    Each year Ethel R. Jones Elementary School in Portage, Indiana picks a theme for the year. This past year the theme was Indiana Jones, so the author decided to fill her classroom with projects based upon ancient civilizations and archaeology. In this article, she describes how her students made Viking-style coins. (Contains 1 online resource.)

  14. Letters

    NASA Astrophysics Data System (ADS)

    2000-04-01

    Coulombic Models in Chemical Bonding by Lawrence J. Sacks and by Derek W. Smith Re: articles by R. J. Gillespie and by D. W. Smith D. W. Smith replies Capsaicin Hazard by Paul E. Vorndam Re: article by J. D. Batchelor and B. T. Jones B. T. Jones reply Editor's Note: Hazards Re: JCE 1999, 76, 240 and JCE 2000, 77, 266.

  15. VIEW LOOKING WEST. THE SOUTH END OF SETTLING RESERVOIR NO. ...

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

    VIEW LOOKING WEST. THE SOUTH END OF SETTLING RESERVOIR NO. 3 AND JONES STREET ARE AT THE LEFT. SETTLING RESERVOIRS NO. 1 AND NO. 2 ARE AT THE FAR CENTER. THE SOUTHEAST CORNER OF SETTLING RESERVOIR NO. 3 IS AT THE BOTTOM. - Yuma Main Street Water Treatment Plant, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  16. Enumerating Homeless Persons: Methods and Data Needs. Conference Proceedings [November 1990].

    ERIC Educational Resources Information Center

    Taeuber, Cynthia M., Ed.

    This document contains these presentations from the Enumerating Homeless Persons conference: (1) "Conference Welcome" (Pat Carlile); (2) "Conference Objectives" (Charles Jones); (3) "Deciding Where We Are" (Barbara Everitt Bryant, Cynthia M. Taeuber, and Tom Jones); (4) "Judging Where We Are Going and How to Do It" (Anna Kondratas); (5)…

  17. Reconceptualizing the Model of Multiple Dimensions of Identity: The Role of Meaning-Making Capacity in the Construction of Multiple Identities

    ERIC Educational Resources Information Center

    Abes, Elisa S.; Jones, Susan R.; McEwen, Marylu K.

    2007-01-01

    We reconceptualize Jones and McEwen's (2000) model of multiple dimensions of identity by incorporating meaning making, based on the results of Abes and Jones's (2004) study of lesbian college students. Narratives of three students who utilize different orders of Kegan's (1994) meaning making (formulaic, transitional, and foundational, as described…

  18. Data Day: Highlighting the Geographic Skills in a Schoolwide Event

    ERIC Educational Resources Information Center

    Lewis, Lydia

    2010-01-01

    Data Day, an event that is the culmination of a multiple-week unit, is the perfect opportunity to work across disciplines and, in particular, aligns beautifully with skills and objectives geography teachers work on with their students. Bruce Jones at The Blake School in Hopkins, Minnesota, was the originator of Data Day. Jones described the…

  19. Introduction to HACCP.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Introduction to HACCP Deana R. Jones, Ph.D. Egg Safety and Quality Research Unit USDA-Agricultural Research Service Russell Research Center Athens, GA Deana.Jones@ars.usda.gov HACCP is an acronym for Hazard Analysis and Critical Control Point and was initially developed by the Pillsbury Company a...

  20. Functional Analysis and Treatment of Coprophagia

    ERIC Educational Resources Information Center

    Ing, Anna D.; Roane, Henry S.; Veenstra, Rebecca A.

    2011-01-01

    Coprophagia, the ingestion of fecal matter, occurs among some individuals with developmental disabilities and is associated with a variety of health risks (e.g., diarrhea, intestinal parasites, blood-borne pathogens; Parry-Jones & Parry-Jones, 1992). Studies that have evaluated operant-based treatments of coprophagia have been limited by a lack of…