89,458 research outputs found
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Charles Darwin and Sir John F. W. Herschel: Nineteenth-Century Science and its Methodology
No full textIn this essay, I review the relationship between Charles Darwin's methodology and the philosophy of science of Sir John F. W. Herschel. Darwin's exposure to Herschel's philosophy was, I argue, significant. Further, when we construct an appropriate reading of Herschel's philosophy of science (a surprisingly difficult feat), we can see that Darwin's three-part argument in the Origin is crafted in order to strictly adhere to Herschel's methodological guidelines
Letter from Charles Wagamon to Miss Marion R. Holick - September 1, 1944
No full textThe first page of a letter addressed to Marion R. Holick from Charles Wagamon. Wagamon writes about the A. A. F. Inspectors from Washington, D. C. are going to check the entire class in navigation and bombing
Charles F. Keyes Field Notes, Thailand: 1963-04 (April 1963), Mahasarakham.
No full textCharles F. Keyes, Field Notebooks, Thailand: April 1963. Field notes in this document were primarily written in Ban Nong Tun (village), Amphoe Muang, Mahasarakham Province (Changwat Maha Sarakham), Thailand. This document is preceded by field notes written in Mahasarakham in March 1963 and is followed by notes written in Mahasarakham in May 1963. Topics: Student Registration Book at Ban Nong Tun School ; Historical Notes on BNT; Our first day in the village as residents; Customs Concerning Health; Mr. Ngao; Festival at Bān Khwao and Kū; Daily Patterns; Ban Khwao ; Funerary Rites; Festival at Kū: 1. Origin and raison d'être of ceremony, 2. Activities at Kū, a) Clown dancers, b) Fôn lep ฟ้อน เล็บ dancers, c) Worship of Buddha and Deva Images, d) Worshipping the Deva, 3. Analysis, 4. Water Ceremony; Songkrān; Village Miscellaneous; Mapping the village and a faux pas; Honouring of Priests; Procession; Presentation of Clothes to Priests; Ritual Bathing of Priests; Bāi Sī for Two Priests; Miscellaneous at Bān Mī; Communism in Tambon Khwao; Mr. Phā; A Walk; Pig Castration; Liang Phī; Thieves and Pursuers; Mr. Ngao; Concepts of Government; Holy Days; Food Anxieties and Implications; Bān Nông Tün; Songkrān ; First Day (April 13); Second Day (April 14); Third Day (April 15); Game: len kān tī khlī (เล่น การ ตีคลี). ; Economic Activities; Animism; Schedule of Events; Trip to Khon Kaen; Death; Funeral Rites; Other Customs at the Time of a Death; Death of an Infant; Sale of Kapok; Mr. Nôi; Belief in Phī; Games: 1. Drawing of Straws, 2. "Tiger eats pigs, 3. Kōēng tā wāēn (เกิ้งตาแวน); Gamblers; Cost of Village Items; Mr. Lā; Mr. Ngao's "Wife"; Sarakham Liquor; Bāp ("sin"); Notes on Sex and Age Patterns of Behavior; Rites of Passage; Division of labor by Age & Sex for Everyday Activities; Geo-social frames-of-reference for the BNT Villager
Charles Kremer House, Salem
No full textThis view of the Charles Kremer House on Church Street near God's Acre, includes several unidentified individuals on the front porch. The Kremer House was built in 1841 and extensively renovated after 1873 with the addition of Victorian embellishments to its facade. Printed below the image is, "E. F. SMALL, CITY VIEW PUBLISHER, Salem / Neg. No. 156 WINSTON, N. C. M. A. CURTIS, Agent.
Charles F. Keyes Field Notes, Thailand: 1963-03 (March 1963), Mahasarakham.
No full textCharles F. Keyes Field Notes, Thailand: March 1963. Field notes in this document were primarily written in Ban Nong Tun (village), Amphoe Muang, Mahasarakham Province (Changwat Maha Sarakham), Thailand. This document is preceded by field notes written in Mahasarakham in February 1963 and is followed by notes written in Mahasarakham in April 1963. Topics: Mahasarakham; Invitation; Muang Fa Daed; Bun Phra Wēt; Books and Literature; Ranks, Statuses, Titles; Tham Bun: A. Religious: Buddhist, B. Religious: Non-Buddhist, C. Sanuk, D. Some General Observations; House Building; Visitors to the Village; Education; Kenaf Growing; House Building; Some beliefs connected with house building; Cooperative behavior; Some tools of house building; Some magical omens; Events; Feeding the Earth Fairies; Erecting the Poles; Rice Milling; "The Lent Watch"; Laos; School; Sū khuan Ceremony; Tattooing; Mr. Ngao; Village Meeting; Ceremony at the Old Khmer Shrine in Tambon Khwao; Trip to Khon Kaen: Christian and Missionary Alliance; A Number of Weddings; Preparations; Tham Bun; Sū khuan for the Groom; Presentation of the Khan Māk; Bride price; Entrance of the Groom; The Marriage Sū Khuan; Rüan hô; Miscellaneous Observations; Analysis; References to information on weddings in Thailand; Miscellaneous; Marriage; Immigration; Invitation to Function at Teachers’ College; Transportation from Village; Customs Concerning Violent Deaths; Buddhism; Village Religion; Khum Nōn Khwao Nôi; Economic Activity; Food; Cooperative Behavior; Eating Habits; Smoking and Drinking; Rapport; Mr. Bunsak; Records at School; List of Children Born in 2499 (1958); List of Students in First Grade (2505-6); List of Students in Fourth Grade (2505-6); Teachers at Bān Nông Tün school since 2502 (1959); Maps of the Village; Mr. Thiang; Village Implement; Mr. Sanit; Travelers; Innovation; A Troubadour; Village Radio; Women's Work; Village Improvements; Forthcoming Events; Visitor to Bān Nông Tün; Mr. Thiang versus the Village; School; To Khon Kaen; Invitation to Ordination; Miscellaneous; Religion; To Kantharawichai; Occupations in a village
[Letter from Charles F. Willis, Jr. to John J. Herrera - February 12, 1953]
No full textLetter from Charles F. Willis, Jr., Special Assistant to President Dwight D. Eisenhower, to John J. Herrera, LULAC National President, dated February 12, 1953. A thank you letter from President Eisenhower on behalf of LULAC's recommendation of Dr. George W. Strake for appointment as U.S. Ambassador to Mexico
Glatfelter, Charles H., March 2, 1992, [Interview]
No full textCharles H. Glatfelter was interviewed on March 2, 1992 by F. Weston Barlett, about his life and time as a Gettysburg College professor and Dean. He discussed teaching his Historical Methods course and his life as a professor.Fortenbaugh, Robert D.; Tilberg, Wilbur E.; Eisenhower, Dwight D.;Henry W.A. Hanson Years
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
No full textFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
[Letter from D. F. Prince to John J. Herrera - April 1, 1947]
No full textLetter from D. F. Prince from the Law Offices of Vesey, Prince, & Clineburg in Washington, D. C., to John J. Herrera in Houston, Texas. Prince advises Herrera to make a thorough investigation of Charles L. Belfi to determine whether or not he was qualified to serve as General Manager of a radio station. Prince thinks Herrera should also authorize John H. Barron to proceed on the new frequency because of the conflict with Mexia
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