61,084 research outputs found
No. 66, Halbert Greaves, interview by Winnifred Margetts
No full textTranscript (70 pages) of interview by Winnifred Margetts with Halbert S. Greaves, professor emeritus of the University of Utah Communications Department on June 27, 1985. This interview is no. 66 in the Everett L. Cooley Oral History Project, and tape no. 306 and 307Greaves (b. 1907) discusses his early life and education, heading the Speech Department at the University of Utah, and his colleague C. Lowell Lees, 1940s-1960s. Interviewer: Winnifred Margett
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
Get PDFThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
Plan of farms... Parish of Great Marlow, Clarence River, N.S.W. [cartographic material] /
No full text"For sale by auction at the Land Sales Rooms, 423 George St. by T.W. Bowden on Monday & Tuesday the 17th & 18th of June 1861.; Map 437 from Ferguson Collection.; Sales plan for farms near Clarence River, N.S.W.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.map-f437
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
Get PDFFirst 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)
Halbert S. Greaves and Vernon J. LeeMaster, production photograph for Utah State Centennial Commission\u27s presentation of "Blossom Time" (opera) performed at Kingsbury Hall, University of Utah, March 18-21, 1947
No full textBlack and white production photograph of Halbert S. Greaves and Vernon J. LeeMaster for the Utah State Centennial Commission\u27s presentation of "Blossom Time" (opera), performed at Kingsbury Hall, University of Utah, on March 18-21, 1947
Insulin-induced hypoglycaemia and the detection of myocardial injury using an ultrasensitive troponin assay
No full textNo abstract available
Trace elements in marine biogenic carbonates: analysis and application to past ocean chemistry
No full textTrace elements in marine biogenic carbonates may be used as proxies for past oceanchemistry provided that there is an established relationship between the trace elementproxy and a parameter of interest, this relationship is preserved within biogeniccarbonate, and the trace element can be determined sufficiently accurately. Successfulapplication of any trace element proxy requires both development of the analyticalmethodology to ensure accurate data with the necessary sensitivity, and anunderstanding of the relationship between proxy and seawater chemistry.Herein I develop methods for the determination of Mg/Ca, Sr/Ca and Cd/Ca inplanktonic foraminiferal calcite, using inductively coupled plasma optical emissionspectrophotometry and isotope dilution thermal ionisation mass spectrometry, andpropose a potential reference material for Mg/Ca in foraminiferal calcite. The developedtechniques are applied to an investigation of the Mg/Ca temperature proxy overChatham Rise in the Southwest Pacific Ocean and a calibration study of the partitioncoefficient, DCd, for cadmium incorporation into planktonic foraminifera.Comparisons of planktonic foraminiferal Mg/Ca, shell weight and oxygenisotope records from sites north and south of the Subtropical Front on Chatham Rise,demonstrate the effects of hydrography, foraminiferal habitat and dissolution as controlson Mg/Ca. Determinations of Cd/Ca in seven species of planktonic foraminiferaconfirm that the dominant controls on Cd/Ca are foraminiferal habitat and hydrography,with only a minor influence of post depositional dissolution. The major uncertainty indetermination of DCd from core top samples comes from uncertainty in estimation of thedepth distribution and seasons of calcification of planktonic foraminifera
Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays
Get PDFThis Letter reports a measurement of the CP violation observables SJ/ψK0S and CJ/ψK0S in the decay channel B0→J/ψK0S performed with 1.0 fb−1 of pp collisions at s√=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψK0S=0.73±0.07(stat)±0.04(syst) and CJ/ψK0S=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within
expectations from the Standard Model
Letter from J. E. Gavin to Louis C. Cramton regarding Sale of Bright Angel Trail
No full textLetter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping
ALMA and Herschel observations of the prototype dusty and polluted white dwarf G29-38
Get PDFJF gratefully acknowledges the support of the STFC via an Ernest Rutherford Fellowship. AB acknowledges the support of the ANR-2010 BLAN-0505-01 (EXOZODI). MCW and OP are grateful for the support of the European Union through ERC grant number 279973.ALMA Cycle 0 and Herschel PACS observations are reported for the prototype, nearest, and brightest example of a dusty and polluted white dwarf, G29-38. These long-wavelength programmes attempted to detect an outlying, parent population of bodies at 1–100 au, from which originates the disrupted planetesimal debris that is observed within 0.01 au and which exhibits LIR/L* = 0.039. No associated emission sources were detected in any of the data down to LIR/L* ∼ 10−4, generally ruling out cold dust masses greater than 1024–1025 g for reasonable grain sizes and properties in orbital regions corresponding to evolved versions of both asteroid and Kuiper belt analogues. Overall, these null detections are consistent with models of long-term collisional evolution in planetesimal discs, and the source regions for the disrupted parent bodies at stars like G29-38 may only be salient in exceptional circumstances, such as a recent instability. A larger sample of polluted white dwarfs, targeted with the full ALMA array, has the potential to unambiguously identify the parent source(s) of their planetary debris.Peer reviewe
- …
