cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Oemopteryx glacialis
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Taeniopterygidae
Oemopteryx
Oemopteryx glacialis

description: Oemopteryx glacialis (Barnston) Collection records. USA, Michigan: Alger Co., Laughing Whitefish River, E Marquette at MI-28, 46.4938, -87.0511, 23.III.2011, R. E. DeWalt and M. Pessino, 2♂, ♀ (INHS); Baraga Co., Sturgeon River, 3km SSE Alberta at US-41, 46.6314, -88.4712, 23.III.2011, R. E. DeWalt and M. Pessino, 21♀ (INHS); Delta Co., Rapid River, Rapid River at US-2, 45.9266, -86.9637, 24.III.2011, R. E. DeWalt and M. Pessino, ♂, 2♀ (INHS); Escanaba River, 8.IV.1949, S. Lievense, 3♀ (UMMZ); Iron Co., Hemlock River, 46.2058, -88.5119, 14.IV.1963, no collector information, nymph (UWIRC). Comments. This northern species is currently known from several localities scattered across the Upper Peninsula.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 169, DOI: 10.5281/zenodo.4753235
Alloperla leonarda Ricker 1952
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Chloroperlidae
Alloperla
Alloperla leonarda

description: Alloperla leonarda Ricker Collection records. USA, Michigan: Houghton Co., North Branch Otter River, T52 N, R35 W, Sec 25, 46.8741, -88.6863, 2.VI.1949, J.W. Leonard and F.A. Leonard, ♂ (INHS); same but 18.VI.1949, 4♀ (CNC, INHS); same but 28.VI.1949, 26♀ (CNC); Ontonagon Co., Middle Branch Escanaba River, 4.6 km SSE Rockland at US-45, 46.6993, -89.1594, 29.V.2010, R.E. DeWalt, M. Pessino, M.M. Brown, and E.W. Hernandez, ♂ (INHS). Comments. This species has been reported from Atlantic Canada east to Minnesota with also an unusual glacial relictual population in southern Missouri (Poulton & Stewart 1991, Surdick 2004, DeWalt et al. 2012a). Two locality records exist for Michigan, both in the western portion of the Upper Peninsula that includes a small series that was recently collected.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on pages 169-170, DOI: 10.5281/zenodo.4753235
description: {"references": ["Poulton, B. C. & K. W. Stewart. 1991. The stoneflies of the Ozark and Ouachita Mountains (Plecoptera). Memoirs of the American Entomological Society, 38: 1 - 116.", "Surdick, R. F. 2004. Chloroperlidae (The Sallflies). Pages 1 - 60. In B. P. Stark & B. J. Armitage, editors. The Stoneflies (Plecoptera) of Eastern North America. Volume II. Chloroperlidae, Perlidae, and Perlodidae (Perlodinae). Bulletin of the Ohio Biological Survey, New Series Volume 14, Columbus, Ohio. 192 pp."]}
Precursors of short gamma-ray bursts
Creators: name: Troja, Eleonora
name: Rosswog, Stephan
name: Gehrels, Neil
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We carried out a systematic search of precursors on the sample of short GRBs observed by Swift. We found that ~8-10% of short GRBs display such early episode of emission. One burst (GRB 090510) shows two precursor events, the former ~13 s and the latter ~0.5 s before the GRB. We did not find any substantial difference between the precursor and the main GRB emission, and between short GRBs with and without precursors. We discuss possible mechanisms to reproduce the observed precursor emission within the scenario of compact object mergers. The implications of our results on quantum gravity constraints are also discussed.
description: 8 pages, 2 figures, accepted for publication in The Astrophysical Journal
Spin identification of heavy nonstandard bosons in dilepton and diphoton events at the LHC
Creators: name: Osland, P.
name: Pankov, A. A.
name: Paver, N.
name: Tsytrinov, A. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: New Physics scenarios generally predict the existence of very heavy quantum states that can possibly manifest themselves as peaks in the cross sections at the LHC. For values of the parameters in certain domains, different nonstandard models can generate peaks with the same mass and same number of events. In this case, the spin determination of a peak, requiring the angular analysis of the events, becomes crucial in order to identify the relevant nonstandard source. We here discuss, using a particularly suitable symmetrically integrated angular asymmetry applied to Drell-Yan dilepton and diphoton events at LHC, the identification reach on the exchanges in these reactions of the following heavy bosons: spin-2 Randall-Sundrum graviton excitations; spin-1 heavy neutral gauge bosons Z^\prime; and spin-0 SUSY R-parity violating sneutrinos.
description: Presentation at the SPIN2010 International Symposium, Juelich (Germany), Sep. 27-Oct. 2, 2010
Neoperla catharae Stark & Baumann 1978
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Neoperla
Neoperla catharae

description: Neoperla catharae Stark & Baumann Collection records. USA, Michigan: St. Joseph Co., St. Joseph River, Mottville, U.S. 12, 41.8001, -85.7572, 21.VII.2006, S.A. Grubbs, 5♂, 4♀ (WKU). Comments. This species is distributed very broadly across the unglaciated eastern Nearctic region (Stark 2004, DeWalt et al. 2012a). This record is from the far southern portion of the Lower Peninsula.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 170, DOI: 10.5281/zenodo.4753235
NC350: Event Programs and Pamphlets
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2016

description: A small selection of programs from events and programs hosted throughout Newark Celebration 350's commemoration of Newark’s 350th year anniversary. This includes programs from the Newark Rebellion Conference,  James Connolly: 10 years the Easter Rising, the Newark Public Library's Black History Celebration, Pathways to College, and NC350's full Fall Program Brochure.
Neoperla stewarti Stark & Baumann 1978
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Neoperla
Neoperla stewarti

description: Neoperla stewarti Stark & Baumann Collection records. USA, Michigan: Kalamazoo Co., Augusta Creek, Gull Lake Biological Station, 42.3633, -85.3535, 19.VII.1957, R.L. Fischer, ♂ (MSUC); Menominee Co., Little Cedar River, 6 km W Carney at G18, 45.5799, -87.6332, 9.VII.2011, R.E. DeWalt, ♀ (INHS). Comments. This widespread eastern Nearctic species (Stark 2004, DeWalt et al. 2012b) is represented in Michigan only by two records. The recent record from 2011 suggests additional records will accrue with summer collecting efforts, but likely mainly from the northern Lower Peninsula and Upper Peninsula. The collecting trip in June-July 2006 by the first author across the southern half of the Lower Peninsula did not produce material of this species.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 170, DOI: 10.5281/zenodo.4753235
On the progenitors of millisecond pulsars by the recycling evolutionary channel
Creators: name: Liu, Wei-Min
name: Chen, Wen-Cong
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The recycling model suggested that low-mass X-ray binaries (LMXBs) could evolve into binary millisecond pulsars (BMSPs). In this work, we attempt to investigate the progenitor properties of BMSPs formed by the recycling evolutionary channel, and if sub-millisecond pulsars can be produced by this channel. Using Eggleton's stellar evolution code, considering that the dead pulsars can be spun up to a short spin period by the accreting material and angular momentum from the donor star, we have calculated the evolution of close binaries consisting of a neutron star and a low-mass main-sequence donor star, and the spin evolution of NSs. In calculation, some physical process such as the thermal and viscous instability of a accretion disk, propeller effect, and magnetic braking are included. Our calculated results indicate that, all LMXBs with a low-mass donor star of 1.0 - 2.0 $M_\odot$ and a short orbital period ($\la 3-4 \rm d$) can form millisecond pulsars with a spin period less than 10 ms. However, it is difficult to produce sub-millisecond pulsars by this evolutionary channel. In addition, our evolutionary scenario cannot account for the existence of BMSPs with a long orbital period ($P_{\rm orb}\ga 70-80\rm d$).
description: 7 pages,5 figures, MNRAS in press
Perlesta golconda DeWalt & Stark 1998
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Perlesta
Perlesta golconda

description: Perlesta golconda DeWalt & Stark Collection records. USA, Michigan: Kalamazoo Co., Augusta Creek, Gull Lake Biological Station, 42.3633, -85.3535, 28.VI.1958, R. L. Fischer, ♂, ♀ (MSUC); same 27.VI.1959, R. L. Fischer, ♂, ♀ (MSUC). Comments. This species occupies a narrow band in the central and eastern Nearctic region from Nebraska and Missouri east to Ohio (DeWalt et al. 2012a). These new records for Michigan are from the southwestern Lower Peninsula. We anticipate that additional populations will be located in the state’s larger river systems (e.g., Grand, St. Joseph, Menominee).
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 170, DOI: 10.5281/zenodo.4753235
Transit timing variation in exoplanet WASP-3b
Creators: name: Maciejewski, G.
name: Dimitrov, D.
name: Neuhaeuser, R.
name: Niedzielski, A.
name: Raetz, St.
name: Ginski, Ch.
name: Adam, Ch.
name: Marka, C.
name: Moualla, M.
name: Mugrauer, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Photometric follow-ups of transiting exoplanets may lead to discoveries of additional, less massive bodies in extrasolar systems. This is possible by detecting and then analysing variations in transit timing of transiting exoplanets. We present photometric observations gathered in 2009 and 2010 for exoplanet WASP-3b during the dedicated transit-timing-variation campaign. The observed transit timing cannot be explained by a constant period but by a periodic variation in the observations minus calculations diagram. Simplified models assuming the existence of a perturbing planet in the system and reproducing the observed variations of timing residuals were identified by three-body simulations. We found that the configuration with the hypothetical second planet of the mass of about 15 Earth masses, located close to the outer 2:1 mean motion resonance is the most likely scenario reproducing observed transit timing. We emphasize, however, that more observations are required to constrain better the parameters of the hypothetical second planet in WASP-3 system. For final interpretation not only transit timing but also photometric observations of the transit of the predicted second planet and the high precision radial-velocity data are needed.
description: MNRAS accepted
Circuit averaging and numerical average value modeling of flyback converter in CCM and DCM including parasitics and snubbers
Creators: name: Amini Akbarabadi, Soroush
Publisher: name: University of British Columbia
Year: 2014

description: Modeling and analysis of basic DC-DC converters is essential for enabling power-electronic solutions for the future energy systems and applications. Average-value modeling (AVM) provides a time-efficient tool for studying power electronic systems, including DC/DC converters. Many AVM techniques including the analytical and numerical state-space averaging and circuit averaging have been developed over the years and available in the literature. Average-value modeling of ideal PWM converters neglects parasitics (losses) to simplify the derivations and modeling procedures, and the resulting models may not be sufficiently accurate for practical converters. In this work, first we consider a second-order Flyback converter, which has transformer isolation and additional parasitics such as conduction losses that have not been accurately included in the prior literature. We propose three new AVMs using the analytical state-space averaging, circuit averaging, and parametric AVM approaches, respectively. By taking into account conduction losses, the accuracy of the proposed average-value models is significantly improved. The derived (corrected) models show noticeable improvement over the traditional (un-corrected) models. Next, we consider the Flyback converter including the snubbers and leakage inductances in the full-order model. Snubbers reduce electromagnetic interfaces (EMI) during transients and protect switching devices from high voltage, and therefore are necessary in many practical converter circuits. Including snubbers into the model improves accuracy in predicting the circuit variables during the time-domain transients as well as predicting the converter efficiency. It is shown that conventional analytical/numerical methods of averaging do not result in accurate AVM for the full-order Flyback converter. A new formulation for the state-space averaging methodology is proposed that is functional for higher-order converters with parasitics and result in highly accurate AVM. The new approach is justified mathematically and verified experimentally using hardware prototype and measurements. The new model is demonstrated to achieve accurate results in large signal time-domain transients, and small-signal frequency-domain analysis in continuous conduction mode (CCM) and discontinuous conduction mode (DCM), which represents advancement to the state-of-the-art in this field.
Perlesta Banks 1906
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Perlesta

description: Perlesta WI-1 Comments. This is an undescribed species resembling P. golconda but distinctive according to unique aedeagal characteristics. Our material has been collected from the Menominee River along the Michigan-Wisconsin border, yet on the Wisconsin side. We consider this a valid Michigan record. Formal description will follow once gravid females are obtained to permit scanning electron microscopy of mature eggs.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 170, DOI: 10.5281/zenodo.4753235
Controlling the sense of molecular rotation: classical vs quantum analysis
Creators: name: Khodorkovsky, Yuri
name: Kitano, Kenta
name: Hasegawa, Hirokazu
name: Ohshima, Yasuhiro
name: Averbukh, Ilya Sh.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Recently, it was predicted theoretically and verified experimentally that a pair of delayed and cross-polarized short laser pulses can create molecular ensembles with a well defined sense of rotation (clockwise or counterclockwise). Here we provide a comparative study of the classical and quantum aspects of the underlying mechanism for linear molecules and for symmetric tops, like benzene molecules, that were used for the first experimental demonstration of the effect. Very good quantitative agreement is found between the classical description of the process and the rigorous quantum mechanical analysis at the relevant experimental conditions. Both approaches predict the same optimal values for the delay between pulses and the angle between them, and deliver the same magnitude of the induced oriented angular momentum of the molecular ensemble. As expected, quantum and classical analysis substantially deviate when the delay between pulses is comparable with the period of quantum rotational revivals. However, time-averaged characteristics of the excited molecular ensemble are equally good described by the these two approaches. This is illustrated by calculating the anisotropic time-averaged angular distribution of the double-pulse excited molecules, which reflects persistent confinement of the molecular axes to the rotation plane defined by two polarization vectors of the pulses.
description: 27 pages, 9 figures
Ionizing feedback from massive stars in massive clusters: Fake bubbles and untriggered star formation
Creators: name: Dale, James E.
name: Bonnell, Ian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use Smoothed Particle Hydrodynamics to simulate the formation of a massive (10^6Msun) stellar cluster system formed from the gravitational collapse of a turbulent molecular cloud. We investigate the hierarchical clustering properties of our model system and we study the influence of the photoionizing radiation produced by the system's multiple O-type stars on the evolution of the protocluster. We find that dense gas near the ionizing sources prevents the radiation from eroding the filaments in which most of the star formation occurs and that instead, ionized gas fills pre-existing voids and bubbles originally created by the turbulent velocity field.
description: 9 pages, 12 figures, accepted by MNRAS
Mesoscopic transport in ultrathin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$
Creators: name: Beekman, C.
name: Zaanen, J.
name: Aarts, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the electrical transport in mesoscopic structures of La$_{0.67}$Ca$_{0.33}$MnO$_3$ in the regime of the metal-insulator transition by fabricating microbridges from strained and unstrained thin films. We measure current-voltage characteristics as function of temperature and in high magnetic fields and with varying film thickness. For strained films, in warming from the metallic to the insulating state, we find non-linear effects in the steep part of the transition characterized by a differential resistance with a strong peak around zero applied current, and saturating at higher currents after resistance drops up to 60 %. We propose that this nonlinear behavior is associated with melting of the insulating state by injecting charge carriers, signalling the occurrence of an intervening phase which involves the formation of short range polaron correlations.
description: 4 pages, 5 figures
Perlinella drymo
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Perlinella
Perlinella drymo

description: Perlinella drymo (Newman) Collection records. USA, Michigan: Arenac Co., Rifle River, Omer, 44.0478, -83.8561, 21. V.1936, T.H. Frison and H.H. Ross, ♀ (INHS); Baraga Co., Sturgeon River, at U.S. 41, 46.6253, -88.4702, 14. VI.1967, A.V. Nebeker, H. Bell, and V. Mattson, ♂ (BYU); Berrien Co., St. Joseph River, Niles, Bond St., 41.8199, -86.2568, 30.IV.1999, S.A. Grubbs, ♂, ♀ (WKU); Ingham Co., Red Cedar River, at Grand River Hwy, 42.7296, -84.4663, 15.IV.2000, E.D. E., 2 nymphs (MSUC). Comments. This widespread large stream and riverine species (DeWalt et al. 2012a) is known from only four Michigan localites, yet distributed from the Upper Peninsula south to the far southwestern Lower Peninsula. Several additional localities are expected.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 170, DOI: 10.5281/zenodo.4753235
Seismic Anisotropy in South America: Mantle Flow and Cratonic Keels
Creators: name: Chagas de Melo, Bruna
name: Assumpção, Marcelo
name: Celli, Nicolas
name: Lebedev, Sergei
Publisher: name: Zenodo
Year: 2019

description: Poster presented at the IGRM 2019 meeting (https://www.ucd.ie/earthsciences/igrm2019/) in Dublin, Ireland.
Isogenoides doratus
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlodidae
Isogenoides
Isogenoides doratus

description: Isogenoides doratus (Frison) Collection records. USA, Michigan: Lake Co., Pere Marquette River, near Baldwin, 43.8574, -85.8518, 9.V.1940, T.H. Frison and H.H. Ross, nymph, exuviae (INHS); same but 10.V.1940, 2♂, ♀ (INHS); Pine River, Walker Bridge, Manistee National Forest, 44.1126, -85.6831, 31.V.1938, O.H. Clark, ♂ (INHS), same but 10.IV.1999, B.C. Kondratieff and J.B. Sandberg, ♂, ♀ (reared) (Sandberg and Stewart 2005); Pine River, Lincoln Bridge Campground, Manistee National Forest, 44.1336, -85.6960, 27.V.1998, S.A. Grubbs, 2♀ (WKU). Comments. This sporadically-distributed species is known from British Columbia east to Quebec (Sandberg & Stewart 2005, DeWalt et al. 2012a). The few records from Michigan are from the southern edge of the northern Lower Peninsula. The relativelyrecent records (1998 and 1999) from the Pine River provided ample evidence this uncommon species still persists in the state.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on pages 170-171, DOI: 10.5281/zenodo.4753235
description: {"references": ["Sandberg, J. B. & K. W. Stewart. 2005. Holomorphology and systematic of the stonefly genus Isogenoides (Plecoptera: Perlodidae). Transactions of the American Entomological Society, 131: 269 - 345."]}
VLT Observations of NGC 1097's "dog-leg" tidal stream
Creators: name: Galianni, Pasquale
name: Patat, Ferdinando
name: Higdon, James L.
name: Mieske, Steffen
name: Kroupa, Pavel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: CONTEXT: Dwarf Spheroidal Galaxies and tidal streams. AIMS: We investigate the structure and stellar population of two large stellar condensations (knots A & B) along one of the faint optical "jet-like" tidal streams associated with the spiral NGC 1097, with the goal of establishing their physical association with the galaxy and their origin. METHODS: We use the VLT/FORS2 to get deep V-band imaging and low-resolution optical spectra of two knots along NGC 1097's northeast "dog-leg" tidal stream. With this data, we explore their morphology and stellar populations. RESULTS: The FORS2 spectra show that the redshift of knot A (and perhaps of knot B) is consistent with that of NGC 1097. The FORS2 photometry shows that the two knots match very well the photometric scaling relations of canonical dwarf spheroidal galaxies (dSph). From the spectral analysis we find that knot A is mainly composed of stars near G-type, with no signs of ongoing star formation. Comparing its spectrum to a library of Galactic GC spectra, we find that the stellar population of this dSph-like object is most similar to intermediate to metal rich GCs. We find moreover, that the tidal stream shows an "S" shaped inflection as well as a pronounced stellar overdensity at knot A's position. This suggests that knot A is being tidally stripped, and populates the stellar stream with its stars. CONCLUSIONS: We have discovered that two knots along NGC 1097's northeast tidal stream share most of their spectral and photometric properties with ordinary dwarf spheroidal galaxies (dSph). Moreover, we find strong indications that the "dog-leg" tidal stream arise from the tidal disruption of knot A. Since it has been demonstrated that tidally stripping dSph galaxies need to loose most of their dark matter before starting to loose stars, we suggest that knot A is at present a CDM-poor object.
description: 13 pages, 8 figures, accepted for publication in Astronomy & Astrophysics
The effect of survey design on response rates, costs, and sampling representativeness in the British Columbia Health Survey : a randomized experiment
Creators: name: Guo, Yimeng
Publisher: name: University of British Columbia
Year: 2014

description: Background: Population-based survey is an essential surveillance tool applicable to various settings, including collecting information regarding community health and public living standards. In the recent decades, there have been numerous reports of decreasing response rates in population-based data collection. There is a need to redesign surveys in a way that is both more appealing to participants and maximizes response rats. Objectives: The current study explored the effects of several survey design features on participant response rates, costs, and data representativeness in a general population health survey in British Columbia. Methods: The British Columbia Health Survey was conducted by the Arthritis Research Centre of Canada and was designed to target all non-institutionalized adults in BC. Seven variants of the survey, each contained a different combination of survey design features, were developed. Survey features under examination were survey mode of administration (paper vs. online), prepaid cash incentive ($2 vs. none), lottery (instant vs. end-of-study lottery), questionnaire length (10 min vs. 30 min), and sampling frame (Info Canada vs. Canada Post). 8000 households in BC were randomly allocated to one of the seven sample groups (Table 6.1). Results: The overall response rate was 27.9% (min-max: 17.1-43.4). The survey mode elicited the largest effect on the odds of response (OR 2.04, 95% CI 1.61-2.59), while the sampling frame showed the least effect (OR 1.14, 95% CI 0.98-1.34). With the exception of the Info Canada sampling frame, all survey features under examination led to statistically significant differences in response rate. Cost analysis for the seven groups showed a negative association between the number of survey features and the resulting cost per response. The baseline survey (no incentives attached) exhibited the lowest cost per surveys sent ($12.76), while the paper survey group (including all possible incentives) showed the highest cost per survey sent ($17.87). Data representativeness results showed significant differences between our survey and the population-weighted Canadian Community Health Survey (CCHS) in terms of socio-demographic variables, but similar distributions for health variables. Findings from this study provided further insight into ways to improve response rates as well as cost-efficiency in self-administered general population health surveys.
Isoperla marlynia Needham & Claassen 1925
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlodidae
Isoperla
Isoperla marlynia

description: Isoperla marlynia Needham & Claassen Collection records. USA, Michigan: Crawford Co., Au Sable River, T26 N, R2 W, Sec. 12, 44.6557, -84.4945, 26.VII.1950, J.W. Leonard and F.W. Leonard, ♀ (UMMZ); Delta Co., Sturgeon River, Nahma Junction, 45.8953, -86.7036, 20. V.1940, T.H. Frison and H.H. Ross, ♂, ♀ (CNC); Houghton Co., Sturgeon River, Chassell, 47.0177, -88.5061, 20.VIII. 1937, H.H. Ross, exuvium (INHS); Wexford Co., Manistee River, nr. U.S. 131, 8.5 km N Manton, 44.4843, -85.4063, 1.VI.2001, S.A. Grubbs, ♀ (WKU). Comments. Isoperla marlynia has been reported from Saskatchewan east to Atlantic Canada and south to Oklahoma, Kentucky and South Carolina (DeWalt et al. 2012a). Within Michigan, however, this is easily the most uncommon Isoperla species and presently known only from four localities scattered across the northern Lower Peninsula and Upper Peninsula.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 171, DOI: 10.5281/zenodo.4753235
Fermionic screening operators in the sine-Gordon model
Creators: name: Jimbo, M.
name: Miwa, T.
name: Smirnov, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Extending our previous construction in the sine-Gordon model, we show how to introduce two kinds of fermionic screening operators, in close analogy with conformal field theory with c<1.
description: 18 pages, 1 figure
A generalized virial theorem and the balance of kinetic and potential energies in the semiclassical limit
Creators: name: Yafaev, D. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We obtain two-sided bounds on kinetic and potential energies of a bound state of a quantum particle in the semiclassical limit, as the Planck constant $\hbar\ri 0$. Proofs of these results rely on the generalized virial theorem obtained in the paper as well as on a decay of eigenfunctions in the classically forbidden region.
Methanol as a tracer of fundamental constants
Creators: name: Levshakov, S. A.
name: Kozlov, M. G.
name: Reimers, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The methanol molecule CH3OH has a complex microwave spectrum with a large number of very strong lines. This spectrum includes purely rotational transitions as well as transitions with contributions of the internal degree of freedom associated with the hindered rotation of the OH group. The latter takes place due to the tunneling of hydrogen through the potential barriers between three equivalent potential minima. Such transitions are highly sensitive to changes in the electron-to-proton mass ratio, mu = m_e/m_p, and have different responses to mu-variations. The highest sensitivity is found for the mixed rotation-tunneling transitions at low frequencies. Observing methanol lines provides more stringent limits on the hypothetical variation of mu than ammonia observation with the same velocity resolution. We show that the best quality radio astronomical data on methanol maser lines constrain the variability of mu in the Milky Way at the level of |Delta mu/mu| < 28x10^{-9} (1sigma) which is in line with the previously obtained ammonia result, |Delta mu/mu| < 29x10^{-9} (1σ). This estimate can be further improved if the rest frequencies of the CH3OH microwave lines will be measured more accurately.
description: 7 pages, 1 table, 1 figure. Accepted for publication in ApJ
Thermohaline mixing in evolved low-mass stars
Creators: name: Cantiello, Matteo
name: Langer, Norbert
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Thermohaline mixing has recently been proposed to occur in low-mass red giants, with large consequence for the chemical yields of low-mass stars. We investigate the role of thermohaline mixing during the evolution of stars between 1Msun and 3Msun, in comparison to other mixing processes acting in these stars. We use a stellar evolution code which includes rotational mixing, internal magnetic fields and thermohaline mixing. We confirm that during the red giant stage, thermohaline mixing has the potential to decrease the abundance of ^3He which is produced earlier on the main sequence. In our models we find that this process is working on the RGB only in stars with initial mass M \simle 1.5Msun. Moreover we report that thermohaline mixing is present also during core helium burning and beyond, and has the potential to change the surface abundances of AGB stars. While we find rotational and magnetic mixing to be negligible compared to the thermohaline mixing in the relevant layers, the interaction of thermohaline motions with the differential rotation may be essential to establish the time scale of thermohaline mixing in red giants. To explain the surface abundances observed at the bump in the luminosity function, the speed of the mixing process needs to be more than two orders of magnitude higher than in our models. However it is not clear if thermohaline mixing is the only physical process responsible for these surface abundance anomalies. Therefore, at this stage, it is not possible to calibrate the efficiency of thermohaline mixing against the observations.
description: 10 pages - Accepted for publication in A&A
Saddles, Arrows, and Spirals: Deterministic Trajectories in Cyclic Competition of Four Species
Creators: name: Durney, C. H.
name: Case, S. O.
name: Pleimling, M.
name: Zia, R. K. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Population dynamics in systems composed of cyclically competing species has been of increasing interest recently. Here, we investigate a system with four or more species. Using mean field theory, we study in detail the trajectories in configuration space of the population fractions. We discover a variety of orbits, shaped like saddles, spirals, and straight lines. Many of their properties are found explicitly. Most remarkably, we identify a collective variable which evolves simply as an exponential: $\mathcal{Q}% \propto e^{λt}$, where $λ$ is a function of the reaction rates. It provides information on the state of the system for late times (as well as for $t\rightarrow -\infty $). We discuss implications of these results for the evolution of a finite, stochastic system. A generalization to an arbitrary number of cyclically competing species yields valuable insights into universal properties of such systems.
description: 15 pages, 5 figures, submitted to Physical Review E
Isoperla richardsoni Frison 1935
Creators: name: Grubbs, Scott A.
name: Pessino, Massimo
name: DeWalt, R. Edward
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlodidae
Isoperla
Isoperla richardsoni

description: Isoperla richardsoni Frison Collection records. USA, Michigan: Arenac Co., Rifle River, Omer, 44.0477, -83.8561, 21. V.1936, T.H. Frison and H.H. Ross, 7♂, 10♀ (CNC); Benzie Co., Betsie River, Benzonia, 44.6214, -86.0992, 27. V.1939, T.H. Frison and H.H. Ross, ♀ (CNC); Crawford Co., North Branch Au Sable River, 2 mi upstream Lovells, 44.8276, -84.4910, 2. V.1936, J.W. Leonard, ♂ (CNC); Ingham Co., Red Cedar River, 42.7316, -84.4869, 21. V.1891, no collector information, 8♂, 1♀ (MSUC); Lake Co., Pine River, near Skookum, 44.0794, - 85.6430, 27. VI.1938, R.P. Bohland, 3♀ (CNC); Mason Co., Big Sable River, Free Soil, 44.1146¸-86.2084, 26. V.1939, T.H. Frison and H.H. Ross, ♀ (CNC); Mecosta Co., Muskegon River, Big Rapids, 43.6987, - 85.4771, 22. V.1936, T.H. Frison and H.H. Ross, 2♂, 3♀, 1 nymph (CNC, INHS); Schoolcraft Co., Manistique River, Germfask at MI-77, 46.2321, - 85.9288, 1. VI.2010, R.E. DeWalt, M. Pessino, M.M. Brown, and E.W. Hernandez, 2 exuviae (INHS); Washtenaw Co., Huron River, Ann Arbor, 42.2887, - 83.7405, 18. V.1919, T.H. Hubbell, ♀ (UMMZ); same but 15.V.1936, J.A. Oliver, ♀ (CNC); same but 29.V.1939, D.L. Cantrall, 2 nymphs (UMMZ); Huron River, Delhi Mills, 42.3338, -83.8099, 6. V.1937, J. Friouf, nymph (UMMZ); same but 23.V.1938, F.E. Lyman, ♂, 3♀ (UMMZ); Huron River, T2 S, R5 E, S2, 42.3338, -83.8093, 6. V.1937, F.E. Lyman, 9 nymphs (INHS). Comments. Although this species has been collected from several localities in the Upper and Lower Peninsulas, with one exception (Schoolcraft Co., Manistique River) all material were obtained prior to 1940. This species appears to have experienced a marked range reduction.
description: Published as part of Grubbs, Scott A., Pessino, Massimo & DeWalt, R. Edward, 2012, Michigan Plecoptera (Stoneflies): Distribution Patterns And An Updated Species List, pp. 162-173 in Illiesia 8 (18) on page 171, DOI: 10.5281/zenodo.4753235
Bogoliubov theory of interacting bosons on a lattice in a synthetic magnetic field
Creators: name: Powell, Stephen
name: Barnett, Ryan
name: Sensarma, Rajdeep
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider theoretically the problem of an artificial gauge potential applied to a cold atomic system of interacting neutral bosons in a tight-binding optical lattice. Using the Bose-Hubbard model, we show that an effective magnetic field leads to superfluid phases with simultaneous spatial order, which we analyze using Bogoliubov theory. This gives a consistent expansion in terms of quantum and thermal fluctuations, in which the lowest order gives a Gross-Pitaevskii equation determining the condensate configuration. We apply an analysis based on the magnetic symmetry group to show how the spatial structure of this configuration depends on commensuration between the magnetic field and the lattice. Higher orders describe the quasiparticle excitations, whose spectrum combines the intricacy the Hofstadter butterfly with the characteristic features of the superfluid phase. We use the depletion of the condensate to determine the range of validity of our approximations and also to find an estimate for the onset of the Mott insulator phase. Our theory provides concrete experimental predictions, for both time-of-flight imagery and Bragg spectroscopy.
description: 22 pages, 7 figures
ශ්‍රී ලාංකේය සිනමා අධ්‍යයාපනය හා සිනමා නිර්මාණකරණය
Creators: name: Gayan
Publisher: name: Zenodo
Year: 2019
Subjects: subject: 1
subject: 2

description: යම් විෂයක් ශාස්ත්‍රාලිය වශයෙන් අධ්‍යයනය කිරීම මඟින් එහි දියුණුව හා යාවත්කාලීන
 වීමේ වේගය වැඩිය. තාක්ෂණික විප්ලවයෙන් පසු ව්‍යාප්ත වූ කලා මාධ්‍යයක් ලෙස සැලකෙන
 සිනමාව, අනෙකුත් කලා මාධයයන්ට වඩා කලාව හා තාක්ෂණය අතර දෝලනය වෙමින්
 පවතින විෂයකි. එහිදී සිනමාව පිළිබඳව අධ්‍යයනය කරන්නෙකු සිනමා කලාව (දර්ශනය හා
 භාවිතාව) මෙන්ම සිනමාවේ තාක්ෂණික පර්ෂය පිළිබඳව ද, අධ්‍යයනය කළ යුතුවේ. එහිදී
 සිනමාව රසවිදීම හා සිනමා නිර්මාණයක් බිහිකිරීම යන්න අන්ත දෙකක්වන අතර එය සරළව
 පැහැදිලි කළහොත් ඉතා වෙහෙසකාරී ලෙස විශාල කණ්ඩායමක් ඒකරාශිවි සිදුකරන සිනමා
 නිර්මාණයක්, වායු සමිකරණය කරන ලද ශාලවක සැප පුටුවක වඩිවිගෙන පොප් කොන්
 කමින් නරඹන්නකි. එහිදී ප්‍රේක්ෂකයාට සිනමාකරුවාගේ වෙහෙස පිළිබඳව තක්සේරුවක්
 අවශ්‍ය නොවන අතර තමාගේ රසවින්දනය පමනක් ඉලක්ක කරගනු ඇත. එබැවින් සිනමා
 නිර්මාණයක් බිහිකිරීම යන්න අතිශය අසීරු කාර්යක්වන අතර ඒ සඳහා කලාත්මක හා
 2
 තාක්ෂණිකයන පාර්ෂවයන් පිළිබඳව පුලුල් අවබෝධයක් හා පරිඥානයක් තිබීම වැදගත්වේ.
 සිනමාව පිළිබඳව අධ්‍යයනය කිරීම ප්‍රධාන කොටස් දෙකක් යටතේ අධයනය කළ හැක.
 ප්‍රායෝගිකව දිර්ග කාලයක් යෙදී සිටිම මඟින් ලබන අද්දැකීම් පාදකකර ගනිමින් සිනමා
 නිර්මාණ බිහිකිරීම හා නිෂ්චිත අධ්‍යයපන ආයතනයක් මඟින් සිනමාව පිළිබඳව හැදෑරිමක්
 සිදුකර එය ප්‍රයෝගිකව සිදුකර ලබන අද්දැකීම් යොදා ගැනීමෙන් සිනමා නිර්මාණය කිරීම.
 මෙයින් ප්‍රායෝගිකව දිර්ග කාලයක් යෙදී සිටිම මඟින් ලබන අද්දැකීම් යොදා ගැනීමේදී දිර්ග
 කාලයක් ගතවීම හා නිෂ්චිතව නිර්මාණයේ භාවිතාවන් පිළිබඳට අඩු අවබෝදය නිසා එම
 නිර්මාණවල සාර්ථකත්වය පිළිබඳව හොද ප්‍රතිචාර අඩුය. එසේ සිනමා නිර්මාණවලට
 සම්බන්ධවී පසුව හොද නිර්මාණ සිදු කළ අධ්‍යයක්ෂකවරු හා සිනමා නිර්මාණකරුවන් සිටී.
 එහෙත් වර්තමානයවන විට නිෂ්චිත සිනමා අධ්‍යයාපනයකින් පසුව සිනමා නිර්මාණ බිහිකිරීම
 පිළිබඳව පෙළඹුමක් ඇත. එය විධිමත් හා නොවිදිමත් යන අංශ දෙක යටතේම සිදුකරනු ලබයි.
 විදිමත් අධ්‍යාපන රාටවට අයත්, විශ්වවිද්‍යාල හා අධ්‍යයාපය ආයතන අතරින් සිනමාව
 පිළිබඳව අධ්‍යයාපනය සිදු කිරීමට අවස්ථාව ලබාදෙන ආයතන රාශියක් ලංකවේ ඇත. ශ්‍රී
 ලංකා පදනම් ආයතනයේ ඩිජිටල් සිනමා පාසල, ජාතික චිත්‍රපට සංස්ථාව, ශ්‍රි ලංකා මාධ්‍ය
 පුහුණු ආයතනය ආදිය මෙන්ම, පේරාදෙනිය, කැලණිය, ශ්‍රී පාලි, සෞන්දාර්ය කලා, වෘත්තීය
 තාක්ෂණ යන විශ්වවිද්‍යාලවල සිනමාව පිළිබඳව අධ්‍යයනය කිරීමේ අවස්ථාව ඇත. මෙම
 ආයතනවල දී, ඔවුනට සිනමාවේ සෛද්ධාන්තික කරුණු හා ප්‍රයෝගික කටයුතු පිළිබදව
 අධ්‍යයනය කිරීමට අවස්ථාව ලැබෙන අතර, මේවනවිට විශාල විද්‍යාර්ථින් පිරිසක් උපාධි හා
 සහතිතපත් ලබාගෙන මෙම අයතනවලින් පිටවගොස් ඇත. එසේ උවද ශ්‍රී ලංකාවේ සිනමා
 කර්මාන්තයේ මෙම විද්‍යාර්ථින්ගේ දායකත්වය ඉතා අල්ප මට්ටමක පවති. අපගේ මෙම
 පර්යේෂණය මඟිනි සිදු කිරීම සිදු කරනු ලැබුවේ මෙම සිනමාව හදාරනු ලැබූ විද්‍යාර්ථින්
 සිනමා කේෂ්ත්‍රයේ දායකත්වය ලබාදෙන්නේද, එසේ නොවන්නේනම් ඒ කුමන හේතුවක්
 නිසාද සහ නියලෙන කේෂත්‍රයන් පිළිබඳව අධ්‍යයනය කරනු ලැබීය.
Musik zwischen Arlberg und Bodensee im 17. und 18. Jahrhundert. Ein Einblick
Creators: name: Bösch-Niederer, Annemarie
Publisher: name: Musik in Bayern
Year: 2019

description: Das westlichste Bundesland Österreichs, Vorarlberg, formte über viele Jahrhunderte hinweg die Musikkultur. Prägten bis zur Schulreform unter Maria Theresia (1717–1780) die Geistlichkeit und Lehrer das musikalische Geschehen, förderte in späteren Jahren die Migration von Pädagogen und Musikern aus dem gesamten Bodenseeraum den musikkulturellen Austausch. Der Beitrag gibt einen Überblick über diese verschiedensten musikalischen Entwicklungen dieses Bundeslandes und berücksichtigt die spärlichen Zeugnisse des höfisch-weltlichen Musikleben (bis zum ausgehenden 17. Jahrhundert), den Orgelbau (Mathäus Abbrederis), als auch die verstreuten kleineren Musikalienbestände in Kloster- und Kirchenarchiven, die Hinweise geben auf eine umfangreiche gehobene Musikpflege in allen Gesellschaftsschichten, die im 17. und 18. Jahrhundert vor allem von süddeutschen Komponisten geprägt war, deren Hauptbestand aber durch Klosteraufhebungen und die besonders in Vorarlberg intensiv betriebene Kirchenmusikreform Ende des 19. Jahrhunderts der Vernichtung preisgegeben wurde.
description: Musik in Bayern, Band 81 (Jahrgang 2016), München 2017
A Neural Network Model for Construction Projects Site Overhead Cost Estimating in Egypt
Creators: name: ElSawy, Ismaail
name: Hosny, Hossam
name: Razek, Mohammed Abdel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Estimating of the overhead costs of building construction projects is an important task in the management of these projects. The quality of construction management depends heavily on their accurate cost estimation. Construction costs prediction is a very difficult and sophisticated task especially when using manual calculation methods. This paper uses Artificial Neural Network (ANN) approach to develop a parametric cost-estimating model for site overhead cost in Egypt. Fifty-two actual real-life cases of building projects constructed in Egypt during the seven year period 2002-2009 were used as training materials. The neural network architecture is presented for the estimation of the site overhead costs as a percentage from the total project price.
description: 11 pages,IJCSI
Una piccola nota su Marco Lollio e Augusta Taurinorum
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2020
Subjects: Storia romana
Torino
Augusta Taurinorum
Consoli romani
Centuriazione
Datazione colonie romane
Giovanni Mennella
Giulia Masci
Vasi di Vicarello

description: Come dice il titolo, si propone una piccola segnalazione concernente un'iscrizione che collega il console Marco Lollio al Piemonte romano, e possibilmente, a Torino. Fondamentale è lo studio di Giovanni Mennella su di essa. Si discutono inoltre alcune considerazioni che si trovano in letteratura successiva. Giovanni Mennella, come confermatomi con comunicazione via posta elettronica (5 Luglio 2020), ha svolto rilievi sul sito del ritrovamento accompagnato dal proprietario del cippo. La localizzazione viene quindi da testimonianza diretta. Mennella è il ricercatore che ha analizzato l'iscrizione e referenziata al periodo. Segue la segnalazione di un articolo di Giulia Masci che invece ripropone la questione in termini diversi, L'articolo di Masci parla inoltre dei vasi di Vicarello riportanti itinerari che menzionano la colonia. Pone la cronologia di Torino verso il 13 a.C. La discussione di Masci è quindi di ambito più ampio di quella del primo riferimento. ___ Si veda l'allegato alla nuova scheda i merito a due articoli apparsi su La Stampa
Study of background gas collisions in atomic traps
Creators: name: Van Dongen, Janelle
Publisher: name: University of British Columbia
Year: 2014

description: This thesis describes an investigation and application of the loss of laser cooled atoms from a trap induced by background collisions. The loss rate constant depends on the density of background gas and the velocity averaged collisional loss cross section due to collisions. The velocity averaged collisional loss cross section can be calculated and its dependence on trap depth was verified using a magneto-optical trap. This verification involved measurements of the loss rate constant for a quadrupole magnetic and a magneto-optical trap and measurement of the density of Ar background gas using a residual gas analyzer. The second part of the thesis focuses on an application of these measurements of the loss rate constant to measure the pressure of the background gas. The experimental progress to date on the atom pressure sensor is provided.
Pattern of uterine and fallopian tubes abnormalities in hysterosalpingography of women presenting with infertility at UBTH, Benin..pdf
Creators: name: Eze, Kenneth
name: Awosanya, Gholahan
name: Akhigbe, Adenike
name: Benka-Coker, Lugard
name: Orhue, Augustine
name: Osibogun, Akin
Publisher: name: figshare
Year: 2021
Subjects: subject: Health Care
subject: 111707 Family Care
subject: FOS: Health sciences
subject: 111710 Health Counselling
subject: 111717 Primary Health Care
subject: 111799 Public Health and Health Services not elsewhere classified
subject: 110320 Radiology and Organ Imaging
subject: FOS: Clinical medicine
subject: 111404 Reproduction
subject: FOS: Medical biotechnology
subject: 111402 Obstetrics and Gynaecology

description: ABSTRACTObjectives: To determine the pattern of uterine and fallopian tube abnormalities in hysterosalpingography (HSG) of patients attending infertility clinic at UBTH, Benin.Methodology: A descriptive study was carried out between August 2002 and May 2003. A total of 200 women presenting at infertility clinic were included in the study. HSG was carried out after informed consent was obtained from the patients.Result: A total of 112 patients had normal HSG while 85 (44%) had abnormalities. A total of 14 (7%) had uterine synaechia, 48(24%) had uterine fibroid, 12(6%) had cervical abnormalities while 4(2%) had congenital abnormalities detected during the study. Sixty four patients (32%) had tubal blockage, 19(9.5%) had hydrosalpinx, 6 (3%) had salpingitis isthmica nodosa and 3(1.5%) had beaded tubes.Conclusion: In conclusion, the pattern of uterine and fallopian tube abnormalities is similar to previously recorded findings in Nigeria, though more patients had normal HSG. There is a need for informed consent, adequate counselling and sympathetic approach in carrying out radiological examinations of infertile couples.Eze KC, Awosanya GOG, Akhigbe AO, Benka-Coker LBO, Orhue AA , Osibogun AO. Pattern of uterine and fallopian tubes abnormalities in hysterosalpingography of women presenting with infertility at UBTH, Benin. African Journal of Medical and Pharmaceutical Sciences 2004; 8: 40-50.