2,130 research outputs found
Architectural illustrations... 1899
No full textArchitectural illustrations / A.W. Leh. [s.l.] : The author, 1899. 1 leaf, 23 plates ; 21 x 29 cm
The distribution of rich clusters of galaxies in the south Galactic pole region
No full textWe present the first results from the Edinburgh-Milano cluster redshift survey. This survey consists of â1⁄4800 galaxy redshifts for â1⁄4100 rich clusters contained in the Edinburgh/Durham Cluster Catalogue. The most striking result is the close correspondence between the maxima in the cluster redshift distribution and the periodic peaks discovered by Broadhurst et al. in their pencil beam galaxy survey at the south Galactic pole. Particularly impressive is an elongated concentration of â1⁄420 systems at z â1⁄4 0.11, found to be responsible for giving rise to the third peak. These observations leave little doubt about the structural reality of the fluctuations observed by Broadhurst et al
Festuca ovina L., s.l. en Festuca rubra L., s.l. in Nederland
No full textThe author gives a survey of the taxa belonging to Festuca ovina L., s.l. and F. rubra L., s.l. as they occur in the Netherlands. Four species are distinguished, viz. F. ovina L., F. trachyphylla (Hack.) Kraj., F. heterophylla Lamk., and F. rubra L. F. ovina L. is represented by 3 subspecies, subsp. tenuifolia (Sibth.) Čelak., subsp. ovina, and subsp. cinerea (Vill.) Duyfjes, nov. comb.; F. rubra L. can be subdivided into 2 subspecies, subsp. rubra and subsp. juncifolia (St. Am.) R. Lit.
Of these taxa F. heterophylla is most probably introduced with grass-seeds; the others are native
The Edinburgh-Durham Southern Galaxy Catalogue - VIII. The cluster galaxy luminosity function
No full textWe have re-examined the nature of the cluster galaxy luminosity function using the data from the Edinburgh-Durham Southern Galaxy Catalogue and the Edinburgh-Milano Redshift Survey. We derive a best-fitting luminosity function (LF) over the range -18 to -21 in M(b(j)), for a composite sample of 22 of the richer clusters that has M(b(j))* = -20.16 +/- 0.02 and alpha = -1.22 +/- -0.04. The dominant error in these values results from the choice of background subtraction method. From extensive simulations we can show that when the LF is fitted over this narrow range, it is difficult to discriminate against bright values of M* in the single cluster fits, but that faint values provide a strong test of the universality of the luminosity function. We find that all the individual cluster data are well-fitted by a Schechter function with or fixed at -1.25, and that less than or equal to 10 per cent of these have fitted values of M* that disagree from the average at the 99 per cent confidence level. We further show that fitting only a single parameter Schechter function to composite subsets of the data can give erroneous results for the derived M*, as might be expected from the known tight correlation between M* and alpha. By considering two parameter fits, the results of Monte Carlo simulations and direct two-sample chi(2) tests, we conclude that there is only weak evidence for differences between the data when broken down into subsets based on physical properties (Bautz-Morgan class, richness, velocity dispersion): from our simulations, only the evidence for a difference between subsets based on velocity dispersion may in fact be significant. However, we find no evidence at all that a Schechter function is not a good model for the intrinsic cluster luminosity function over this absolute magnitude range. Models that invoke strong evolution of galaxy luminosity of all galaxies within clusters are inconsistent with our results
The statistics and evolution of cosmological density fluctuations
No full textSIGLEAvailable from British Library Document Supply Centre- DSC:D94925 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Life of Saint Gregory the Great Written in Four Books by John the Deacon: A Translation and Commentary of Book III
No full textThose interested in St. Gregory and his times find constant reference to the life of that pope written by John the Deacon. Because no translation of that work has hitherto appeared in English, a group of students, at the suggestion of Dr. L.V. Jacks, director of the classical department of The Creighton University, decided to undertake a translation and commentary on the Vita as their piece of research. |Since Books I and II of the Vita Sancti Gregorii Magni were already in process of translation when this work was begun, the original plan was to present a translation and commentary on Books III and IV. However, as the manuscript took shape, it ran into a forbidding length--some three hundred pages of translation alone; hence the first plan was abandoned and the scope of the work was limited to the third book alone. The text used was that of J.P. Migne, Volume LXXV of Patrologlae cursus completus Patrum Latinorum, which in the course of this study will be referred to as the Patrologia Latina. |Through the commentary the author has endeavored to supplement and clarify the text and to present various views on controversial questions. No textual, grammatical, or stylistic problems are handled, herein since these points have already been treated by competent scholars in this field. |This study has the secondary purpose of examining the historiography of John the Deacon in the Vita III. As background material a chapter containing the few known facts about this Roman deacon of the ninth century and his works has been included; also a chapter dealing with the early life and writings of St. Gregory because this material is not included in Book III.ProQuest Traditional Publishing Optio
An Estimation of the Entomological Inoculation Rate for Ifakara: A Semi-Urban Area in a Region of Intense Malaria Transmission in Tanzania.
No full textAn entomological study on vectors of malaria and their relative contribution to Plasmodium falciparum transmission in the semi-urban area of Ifakara, south-eastern Tanzania, was conducted. A total of 32 houses were randomly sampled from the area and light trap catches (LTC) performed in one room in each house every 2 weeks for 1 year. A total of 147 448 mosquitoes were caught from 789 LTC; 26 134 Anopheles gambiae s.l., 615 A. funestus, 718 other anophelines and 119 981 culicines. More than 60% of the total A. gambiae s.l. were found in five (0.6%) LTCs, with a maximum of 5889 caught in a single trap. Of 505 A. gambiae s.l. speciated by polymerase chain reaction, 91.5% were found to be A. arabiensis. Plasmodium falciparum sporozoite enzyme-linked immunosorbent assay tests were performed on 10 108 anopheles mosquitoes and 39 (0.38%) were positive. Entomological inoculation rate (EIR) estimates were generated using a standard method and an alternative method that allows the calculation of confidence intervals based on a negative binomial distribution of sporozoite positive mosquitoes. Overall EIR estimates were similar; 31 vs. 29 [95% confidence interval (CI): 19, 44] infectious bites per annum, respectively. The EIR ranged from 4 (95% CI: 1, 17) in the cool season to 108 (95% CI: 69, 170) in the wet season and from 54 (95% CI: 30, 97) in the east of the town to 15 (95% CI: 8, 30) in the town centre. These estimates show large variations over short distances in time and space. They are all markedly lower than those reported from nearby rural areas and for other parts of Tanzania
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