1,725,163 research outputs found
Santa Fe (ATSF) 3754
A 6 x 10 photograph print showing Santa Fe (ATSF) 3754, 4-8-4, on a passenger train travelling through hills, 8 cars
Submillimetre observations of RXJ1856.5-3754
We report on submillimetre bolometer observations of the isolated neutron star RX J1856.5−3754 using the Large Apex Bolometer Camera bolometer array on the Atacama Pathfinder Experiment telescope. No cold dust continuum emission peak at the position of RX J1856.5−3754 was detected. The 3σ flux density upper limit of 5 mJy translates into a cold dust mass limit of a few earth masses. We use the new submillimetre limit, together with a previously obtained H-band limit, to constrain the presence of a gaseous, circumpulsar disc. Adopting a simple irradiated disc model, we obtain a mass accretion limit of Graphic and a maximum outer disc radius of ∼1014 cm. By examining the projected proper motion of RX J1856.5−3754, we speculate about a possible encounter of the neutron star with a dense fragment of the CrA molecular cloud a few thousand years ago
Block Card 3754 Woodley Road
This image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Cape Cod Style | 3754 Woodley Road (Toledo, Ohio) | Dwelling | Westgate Area (Toledo, Ohio
Block Card 3754 Mapleway Drive
This image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Garrison Colonial Style | 3754 Mapleway Drive (Toledo, Ohio) | Dwelling | Hietts Replat of Part of Beverly Place Addition (Toledo, Ohio) | South Toledo Area (Toledo, Ohio
Block Card 3754 Schneider Road
This image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Garrison Colonial Style | 3754 Schneider Road (Toledo, Ohio) | Dwelling | Crossgates Plat (Toledo, Ohio) | South Toledo Area (Toledo, Ohio
Block Card 3754 Treelawn Drive
This image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: 3754 Treelawn Drive (Toledo, Ohio) | Heatherway Plat (Toledo, Ohio) | South Toledo Area (Toledo, Ohio) | Garrison Colonial Style | Dwellin
The sydnonimine C87-3754 evokes endothelium-independent relaxations and prevents endothelium-dependent contractions in blood vessels of the dog
Experiments were designed to compare the relaxing activities of the new sydnonimine C87-3754 with SIN-1 in arteries and veins of the dog, and to determine whether C87-3754 can prevent endothelium-dependent contractions. Rings of coronary and femoral arteries, and saphenous veins were suspended in organ chambers for the measurement of changes in isometric tension. SIN-1 and C87-3754 evoked concentration-dependent relaxations in all rings of blood vessels contracted with a submaximal concentration of either prostaglandin F(2α), endothelin-1, phenylephrine, or norepinephrine. In both arteries and veins, the concentration-relaxation curves to C87-3754 were shifted significantly to the right (by two to three logarithmic units) of that to SIN-1. The presence of endothelium significantly inhibited the relaxations to SIN-1 but did not affect those to C87-3754. The treatment of coronary arteries with methylene blue or oxyhemoglobin significantly impaired the relaxations to SIN-1 and C87-3754. Neither C87-3754 nor its prodrug pirsidomine (CAS 936) affected the membrane potential in coronary arteries. The endothelium-dependent contractions evoked by nitro L-arginine, arachidonic acid, and the calcium ionophore A23187 in basilar arteries of the dog were inhibited by C87-3754. These results indicate that the sydnonimine C87-3754 is a dilator of both arterial and venous smooth muscle, and can prevent endothelium-mediated contractions in cerebral arteries of the dog. The inhibition of vascular tone is likely to involve the activation of soluble guanylate cyclase, causing enhanced production of cyclic guanosine monophosphate in the smooth muscle without a change in membrane potential.link_to_subscribed_fulltex
Going Beyond Counting First Authors in Author Co-citation Analysis
The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Santa Fe (ATSF) 3754 on "Grand Canyon Limited"
A photograph postcard showing Santa Fe (ATSF) 3754, 4-8-4, on 1st No. 23, "Grand Canyon Limited", near Belva, OK, starting up Curtis Hill on old line, 15 car
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