Some biological aspects of semen were investigated in the Persian sturgeon, Acipenser persicus, by determination of seminal plasma indices (ionic composition and osmolality), sperm density and their relationships with sperm motility. The osmolality of seminal plasma ranged from 42.00 to 111.00 mOsmol Kg-1. The concentrations of Sodium (Na+), Potassium (K+), Chloride (Cl-), Calcium (Ca2+) and Ma...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Mari Ijäs Name of the doctoral dissertation Chemically modified and nanostructured graphene Publisher School of Science Unit Department of Applied Physics Series Aalto University publication series DOCTORAL DISSERTATIONS 126/2013 Field of research Theoretical and Computational Physics Manuscript submitted 12 June 2013 Date of ...

We present the first results of the Chandra and optical follow-up observations of hard X-ray sources detected in the ASCA Medium Sensitivity Survey (AMSS). Optical identifications are made for five objects. Three of them show either weak or absent optical narrow emission lines and are at low redshift ∼ 0.06. One of them is a broad line object at z = 0.910 and one is a z = 0.460 object with ...

This paper discusses the detection of P V λλ1118,1128 and other broad absorption lines (BALs) in archival HST spectra of the low-redshift BALQSO, PG 1254+047. The P V identification is secured by excellent redshift and profile coincidences with the other BALs, such as C IV λλ1548,1550 and Si IV λλ1393,1403, and by photoionization calculations showing that other lines near this wavelength, e.g. ...

We present NOT optical observations of a clump (l = 127. • 9435 , b = +1. • 8298), embedded in an extended, irregularly shaped, diffuse optical nebula. This condensation shows an emission-line spectrum typical of classic H ii regions. Although its location on the sky coincides with a nearby extended photoionized region recently identified by Cichowolski et al. (2003) in radio data from the Cana...

PURPOSE This study was undertaken to assess serial month-to-month consistency of macular pigment (MP) optical density and serum concentrations of lutein (L) and zeaxanthin (Z). Four healthy subjects aged between 23 and 51 years volunteered to participate in this study. METHODS MP optical density (measured psychophysically using heterochromatic flicker photometry [HFP]), and serum concentratio...

This paper discusses the detection of P V jj1118, 1128 and other broad absorption lines (BALs) in archival Hubble Space Telescope spectra of the low-redshift BAL QSO PG 1254]047. The P V identiÐcation is secured by excellent redshift and proÐle coincidences with the other BALs, such as C IV jj1548, 1550 and Si IV jj1393, 1403, and by photoionization calculations showing that other lines near th...

We present optical photometric and spectrophotometric observations of two selected filaments near the North rim of the Vela supernova remnant also observed in UV with the International Ultraviolet Explorer, and in X-rays with the ROSAT PSPC detector. From the optical data, we have derived spatially-resolved (∼ 3′′) profiles of several emission lines across the filaments, which allowed us to res...

The purpose of this article was to compare the mean value of optical density of four porcelains commonly used for fabrication of inlay/onlay prostheses using direct digital radiograph. The sample consisted of 20 2-mm thick porcelain specimens (measured by digital pachymeter): Empress (Ivoclair), Simbios (Degussa), Vita Omega 900 and Vitadur Alpha (Vita Zahnfabrik). The values of optical density...