60,050 research outputs found
Letter from A. F. Potter to John H. Page
No full textLetter from A. F. Potter to John H. Page referring his request to build a railway to the District Forester at Albuquerque, New Mexico
Vancouvereuma shawi Shear & Richart & Wong 2020
No full textVancouvereuma shawi (Shear, 2004) Figs. 102–104 Taiyutyla shawi Shear, 2004:16. Type locality: BRITISH COLUMBIA: Vancouver Island, Lower Hanging Sump Cave, 16 km SW of Port McNeil, male holotype, juvenile male paratype (VMNH). New record: WASHINGTON: Grays Harbor Co., unnamed tributary of Wynoochee River, Olympic National Forest, elev. 457 m., 47.4852°N, - 123.5231°W, 28 September 2003, W. Leonard, m f. Notes: Vancouvereuma shawi has also been collected in Thurston Co., Washington (Shear 2004), and females resembling this species have been collected as far north as southern Alaska.Published as part of Shear, William A., Richart, Casey H. & Wong, Victoria L., 2020, The millipede family Conotylidae in northwestern North America, with a complete bibliography of the family (Diplopoda, Chordeumatida, Heterochordeumatidea, Conotyloidea), pp. 1-78 in Zootaxa 4753 (1) on pages 26-28, DOI: 10.11646/zootaxa.4753.1.1, http://zenodo.org/record/398378
Polly H. Carder Collection on George F. Root
No full textGeorge Frederick Root (1820-1895) was an American songwriter and music educator. He is perhaps best known for his song "The Battle Cry of Freedom," which was written and rose to popularity during the U.S. Civil War. The Polly H. Carder Collection on George F. Root contains original published scores and songbooks from the period 1852-1907 and photocopied scores collected by Polly H. Carder, author of the book George F. Root, Civil War Songwriter: A Biography. The collection also contains a short article, "The Last Days of George F. Root," written by Root's daughter, Clara Louise Burnham
Drop-charge correlations for polydisperse electrostatically atomized liquid sprays
No full textIn many applications liquid sprays are atomized using electrostatic methods, and typically these spray plumes containing drops that have a range of diameters. To understand and predict the dynamics of polydisperse electrically charged spray plumes, knowledge of how the electrical charge is distributed amongst the drops is required. This has been achieved by post-processing phase Doppler anemometry data for two electrostatically atomized liquid sprays and fitting the drop diameter-charge correlation to an assumed relationship of form q=ADn, Here q and D are drop charge and diameter and n and A are empirical constants that describe the correlation. Values of n and A were calculated to be 2.1 to 2.9 and 5.8 ×10-5 for a spray of specific charge 1.8 C/m3 and 2.1 to 3.2 and its value of A is 2.5×10-4 for a spray of specific charge 1.2 C/m3. It was found that the mean drop charge, for all drop diameters, for both data-sets, was almost always less than the drop Rayleigh limit. This latter fact gives confidence in the procedure used since no restriction was placed on this parameter during the processing. We also estimate the distribution of drop charge about the mean value and as a function of diameter and suggest that small drops possess higher rms charge levels
Electron and positron scattering from 1,1-C₂H₂F₂
Full text link1,1-difluoroethylene (1,1-C₂H₂F₂) molecules have been studied for the first time experimentally and theoretically by electron and positron impact. 0.4-1000 eV electron and 0.2-1000 eV positron impact total cross sections (TCSs) were measured using a retarding potential time-of-flight apparatus. In order to probe the resonances observed in the electron TCSs, a crossed-beam method was used to investigate vibrational excitation cross sections over the energy range of 1.3-49 eV and scattering angles 90 degrees and 120 degrees for the two loss energies 0.115 and 0.381 eV corresponding to the dominant C-H (ν₂ and ν₉) stretching and the combined C-F (ν₃) stretching and CH₂ (ν₁₁) rocking vibrations, respectively. Electron impact elastic integral cross sections are also reported for calculations carried out using the Schwinger multichannel method with pseudopotentials for the energy range from 0.5 to 50 eV in the static-exchange approximation and from 0.5 to 20 eV in the static-exchange plus polarization approximation. Resonance peaks observed centered at about 2.3, 6.5, and 16 eV in the TCSs have been shown to be mainly due to the vibrational and elastic channels, and assigned to the B₂, B₁, and A₁ symmetries, respectively. The pi* resonance peak at 1.8 eV in C₂H₄ is observed shifted to 2.3 eV in 1,1-C₂H₂F₂ and to 2.5 eV in C₂F₄; a phenomenon attributed to the decreasing C=C bond length from C₂H₄ to C₂F₄. For positron impact a conspicuous peak is observed below the positronium formation threshold at about 1 eV, and other less pronounced ones centered at about 5 and 20 eV.The work was supported in part by a Grant-in-Aid, the
Ministry of Education, Science, Technology, Sport and Culture,
Japan, the Japan Society for the Promotion of Science
JSPS, and the Japan Atomic Energy Research Institute
JAERI. One of the authors C.M. is also grateful to the
JSPS for financial support under Grant No. P04064. Another
author H.T. acknowledges Dr. T. Ozeki of the JAERI for
his encouragement and support during this work. This work
was also done under the International Atomic Energy Agency
IAEA project for three of the authors C.M., M.H., and
H.T.. Two of the authors M.H.F.B. and M.A.P.L. acknowledge
support from the Brazilian agency Conselho Nacional
de Desenvolvimento Científico e Tecnológico CNPq.
MHFB also acknowledges support from the Paraná state
agency Fundação Araucária and from FINEP ( under Project
No. CT-Infra 1)
Loomisiella pylei Shear & Richart & Wong 2020, new species
No full textLoomisiella pylei, new species Figs. 244–246 Types: Male holotype, male and female paratypes from WASHINGTON: Wahakiakum Co., Lower Hendrickson Canyon, 46.3693°N, - 123.6657°W, elev. 30 m, old-growth forest, collected 23 January 2004, by W. Leonard, M. Leonard, C. Richart, R. M. Pyle, and K. Novoselić. Diagnosis: See under preceding species. Etymology: The species name honors Robert Michael Pyle, a notable lepidopterist, author, conservation advocate, and as is this species, denizen of the Willapa Hills. Description: Male: Length, 5.0 mm. Fourteen ocelli in oval-triangular group. Metazonital shoulders poorly developed; segmental setae curved, acute. Legpairs one, two reduced, pairs three, four encrassate, pairs five to seven near same size as postgonopodal legs; femora three, four with basal femoral knobs acute, posteriorly directed.Anterior gonopods (ag, Figs. 244, 245) with large anterior sternum, widely separated, curving lateral to posterior gonopod coxites, apically decurved but without any apical expansion, small lateral branch tightly appressed to gonopod (free in Fig. 245 due to compression on microscope slide). Posterior gonopod telopodites reduced but relatively larger than in L. evergreen; posterior gonopod coxites (pgc, Figs. 244, 245) short, broad, anteriorly cupped, with broad, lamellate process mesally, basal pseudoflagellum originating posteriorly, two processes distolaterally, more lateral process composed of filaments (seen as separate in Fig. 246 due to compression on microscope slide), mesal process curved, apically fimbriate. Coxae 10, prefemora 11 as usual. Female 5.2 mm long, nonsexual characters as in male. Distribution: WASHINGTON: Lewis Co., FS-25 8.5 mi S of Randle, 46.4409°N, - 121.9966°W, elev. 330 m, 21 December 2003, W. Leonard, C. Richart m f; same as previous but 6 December 2003, m. Pacific Co., Cement Creek, SR-401 2.5 mi S of Parpala Road in Naselle, 46.3341°N, - 123.8002°W, elev. 30 m., 15 January 2006, W. Leonard, C. Richart, from the litter of a riparian forest including Alnus rubra, Picea sitchensis, Sambucus cf. caerulea, and Polystichum munitum, m ff; Trap Creek Road 1.7 mi S of SR-6, Trap Creek Basin, 46.5403°N, - 123.6297°W, elev. 60 m., 19 November 2005, W. Leonard, C. Richart, mm ff. Wahkiakum Co., only known from the type locality.Published as part of Shear, William A., Richart, Casey H. & Wong, Victoria L., 2020, The millipede family Conotylidae in northwestern North America, with a complete bibliography of the family (Diplopoda, Chordeumatida, Heterochordeumatidea, Conotyloidea), pp. 1-78 in Zootaxa 4753 (1) on page 69, DOI: 10.11646/zootaxa.4753.1.1, http://zenodo.org/record/398378
Effects of a selective vasopressin V-2 receptor antagonist, satavaptan, on ascites recurrence after paracentesis in patients with cirrhosis
No full textBACKGROUND & AIMS: Cirrhotic patients with recurrent ascites frequently require paracentesis despite diuretic therapy. Vasopressin receptor antagonists, by increasing free water clearance, may reduce the recurrence of ascites. To investigate the effects of the addition of a vasopressin V(2) receptor antagonist, satavaptan, to 100mg spironolactone on ascites recurrence after a large volume paracentesis in patients with liver cirrhosis irrespective of the presence of hyponatraemia.
METHODS: One hundred and fifty one cirrhotic patients with recurrent ascites with or without hyponatraemia, and normal to mildly abnormal renal function were randomised in a double-blind study to receive either 5mg (n=39), 12.5mg (n=36), 25mg (n=40) of satavaptan or placebo (n=36) for 12 weeks. Their Child-Pugh scores were 9.2+/-1.3, 8.7+/-1.7, 8.8+/-1.3, and 9.0+/-1.5, respectively.
RESULTS: Median time to first paracentesis was 23, 26, and 17 days with satavaptan 5, 12.5, and 25mg, respectively, versus 14 days with placebo (ns for all doses). The frequency of paracenteses was decreased significantly (p<0.05) in all satavaptan groups versus placebo. Mean increase in ascites was 2.82+/-0.48 L/week for placebo versus 2.12+/-0.40, 2.14+/-0.33, and 2.06+/-0.40 L/week for the 5, 12.5, and 25mg of satavaptan, respectively (ns for all doses). Similar numbers of patients experienced major adverse events in all groups. Increases in serum creatinine, orthostatic changes in systolic pressure and thirst were more common with satavaptan.
CONCLUSIONS: Satavaptan has the potential to reduce recurrence of ascites after a large volume paracentesis at doses from 5 to 25mg in cirrhotic patients with ascites
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