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180 research data, page 1 of 18

National Ambulatory Medical Care Survey, 1995

United States Department of Health and Human Services. National Center for Health Statistics (1998)
Publisher: ICPSR - Interuniversity Consortium for Political and Social Research
The National Ambulatory Medical Care Surveys (NAMCS) supply data on ambulatory medical care provided in physicians' offices. The 1995 survey contains information from 36,875 patient visits to 1,883 physicians' offices. Data are available on the patient's smoking habits, reason for the visit, expected source of payment, the physician's diagnosis, and the kinds of diagnostic and therapeutic services rendered. Other variables cover drugs/medications ordered, administered, or provided during offi...

A gradient-based optimisation scheme for optical tomography

Simon R. Arridge; Martin Schweiger (1998)
Publisher: Figshare
Optical tomography schemes using non-linear optimisation are usually based on a Newton-like method involving the construction and inversion of a large Jacobian matrix. Although such matrices can be efficiently constructed using a reciprocity principle, their inversion is still computationally difficult. In this paper we demonstrate a simple means to obtain the gradient of the objective function directly, leading to straightforward application of gradient-based optimisation methods.

A Measurement of the total cross-section for e+ e- ---> hadrons at s**(1/2) = 10.52-GeV

Ammar, R.; Baringer, Philip S.; Bean, A.; Besson, D.; Coppage, D.; Darling, C.; Davis, R.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, N.; Anderson, S.; Kubota, Y.; Lattery, M.; Lee, S.J.;... (1998)
Publisher: Phys.Rev. D57 (1998) 1350-1358
CORNELL-CESR. Measurement of R at centre-of-mass energy 10.52 GeV and derivation of ALPHA_S.

Search for top squark pair production in the dielectron channel

Abachi, S.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adam, I.; Adams, D.L.; Adams, M.; Ahn, S.; Aihara, H.; Alvarez, G.; Alves, G.A.; Amidi, E.; Amos, N.; Anderson, E.W.; Aronson, S.H.;... (1998)
Publisher: Phys.Rev. D57 (1998) 589-593
FNAL-COLLIDER. Search for top squark pair production in the dielectron channel. 74.9 +- 8.9 1/pb integrated luminosity.

Measurement of dijet angular distributions and search for quark compositeness

Abbott, B.; Abolins, M.; Acharya, Bannanje Sripath; Adam, I.; Adams, D.L.; Adams, M.; Ahn, S.; Aihara, H.; Alves, G.A.; Amidi, E.; Amos, Norman A.; Anderson, W.; Astur, R.; Baarmand, M.M.; Baden, A.;... (1998)
Publisher: Phys.Rev.Lett. 80 (1998) 666-671
FERMILAB-COLLIDER. Measurement of the angular distribution of dijets produced in pbar-p collisions at a centre-of-mass energy of 1.8 TeV. Data come from anintegrated luminosity of 94pb-1 collected buring 1993-95. The variable CHI is defined as:. CHI=(1+ABS(COS(THETA*)))/(1-ABS(COS(THETA*))). = EXP(ABS(ETARAP(JET1)-ETARAP(JET2))). where THETA* is the cm scattering angle and ETARAP the jets pseudorapidity.

Synthesis and Characterization of the Electronic and Electrochemical Properties of Thienylenevinylene Oligomers with Multinanometer Dimensions

Jestin, Isabelle; Frère, Pierre; Mercier, Nicolas; Levillain, Eric; Stievenard, Didier; Roncali, Jean (1998)
Publisher: Figshare
Soluble thienylenevinylene oligomers based on 3,4-dihexylthiophene with chain length approaching 100 Å (16-mer) have been synthesized. Optical data obtained in solution and on solution-processed thin films show that chain extension produces a narrowing of the HOMO−LUMO gap (ΔE) and band gap (Eg) which reach values significantly smaller than that of the parent polymer. Plots of ΔE and Eg vs the reciprocal number of carbons in the chain (1/Cn) reveal a deviation from linearity beyon...

Composition Space Diagrams for Mixed Transition Metal Oxide Fluorides

Norquist, Alexander J.; Heier, Kevin R.; Stern, Charlotte L.; Poeppelmeier, Kenneth R. (1998)
Publisher: Figshare
Composition space diagrams have been used to study phase stability of mixed transition metal oxide fluorides synthesized by hydrothermal reaction of the metal oxides in (HF)x·pyridine/H2O/pyridine solution (150 °C, autogenous pressure). The combination of early (Ti, Zr, Hf, Nb, Ta, Mo, W) and late (Cu, Cd, Zn) transition metals and the effects of varying the mole ratios of the metals, (HF)x·pyridine, and water are examined in this study. Single-crystal products containing [Cu(py)4...

Seawater carbonate chemistry and calcification during a study of barrier reef flat in Moorea, French Polynesia, 1998

Guy Boucher; Jacques Clavier; Christian Hily; Jean-Pierre Gattuso (1998)
Publisher: PANGAEA
Projects: EC | EPOCA (211384)

Concerning the Localization of End Groups in Dendrimers

Bosman, Anton W.; Bruining, Monique J.; Kooijman, Huub; Spek, Anthony L.; A. J. Janssen, René; Meijer, E. W. (1998)
Publisher: Figshare
Concerning the Localization of End Groups in Dendrimers

Structural and Functional Models of the Dioxygen-Activating Centers of Non-Heme Diiron Enzymes Ribonucleotide Reductase and Soluble Methane Monooxygenase

Lee, Dongwhan; Lippard, Stephen J. (1998)
Publisher: Figshare
Structural and Functional Models of the Dioxygen-Activating Centers of Non-Heme Diiron Enzymes Ribonucleotide Reductase and Soluble Methane Monooxygenase