2,513 research outputs found
The American species of the annulatipes group of the subgenus Lepidohelea, genus Forcipomyia (Diptera: Ceratopogonidae)
The annulatipes group of the genus Forcipomyia Meigen, subgenus Lepidohelea Kieffer, is represented in the Western Hemisphere by 12 species. Keys are presented for their identification, and to distinguish them from other groups of the subgenus Lepidohelea. The three previously known species, annulatipes Macfie, brasiliensis Macfie, and kuanoskeles Macfie, from southern Brazil, as well as the following nine new species, are described and illustrated: bahiensis, basifemoralis, bifida, convexipenis, euthystyla, gravesi, herediae, hobbsi, and weemsi
The Neotropical Predaceous Midges of the genus \u3ci\u3eBezzia\u3c/i\u3e (Diptera: Ceratopogonidae) Part IV. The \u3ci\u3edentifemur\u3c/i\u3e and \u3ci\u3evenustula\u3c/i\u3e Groups
The dentifemur and venustula groups of the subgenus Homobezzia Macfie, genus Bezzia Kieffer, are represented in the Neotropical Region by 12 species. A key is presented for their identification, and to distinguish them from other groups of the subgenus Homobezzia. The two previously known species, B. venustula (Williston) and B. snowi Lane, are described and illustrated, as well as the following ten new species: aitkeni, bromeliae, cayoensis, dentifemur, filiductus, fusca, mexicana, nigritibialis, pseudovenustula, and raposoensis. Bezzia concoloripes Made is regarded as a junior synonym of B. venustula (Williston)
Geographic Patterns of Student Enrollment in Ohio's State-Assisted Universities
Author Institution: Department of Geography, Bowling Green State UniversityThis is a study of geographic patterns of Ohio student enrollment at Ohio's state-assisted universities using cartographic analyses in conjunction with county-based enrollment data from the Ohio Board of Regents. Because the six largest urban counties—Cuyahoga (with Cleveland), Franklin (with Columbus), Hamilton (with Cincinnati), Lucas (with Toledo), Montgomery (with Dayton), and Summit (with Akron)—provide over 50% of the college students in Ohio, one factor that has an impact on the geographic patterns of enrollment is the colleges' locations relative to those counties. Maps depicting the percentage of students from each county attending the thirteen universities generally show that geographic distance between counties and colleges influences enrollment patterns. In addition, an examination of the distance bands from which colleges attract students shows evidence of a distance decay in enrollment for the commuter universities, including Akron, Cincinnati, Shawnee State, Toledo, Wright State, and Youngstown State. In contrast, the regional universities, including Bowling Green State, Miami, Kent State, and Ohio University, are located in more rural counties and, of necessity, must attract students from beyond their local hinterlands. The status of colleges also affects their geographic patterns of enrollment. Ohio State illustrates this. Due to its large student enrollment and status as the state's flag ship university, it draws college-bound students from throughout Ohio
Una especie nueva de mosquita predadora del género Patagónico Austrosphaeromias con la redescripción de A. Chilensis (Diptera, Ceratopogonidae).
A new species of predaceous midge, Austrosphaeromias setosa sp. nov., is described and illustrated from adult males and females collected in the Patagonian-Andean region of Argentina and Chile. Based on examination of the type species of Austrosphaeromias Spinelli, 1997 and recently collected specimens from near the type-locality, the female and previously unknown male of Austrosphaeromias chilensis (Ingram & Macfe, 1931) are also described and illustrated. Descriptions are accompanied by color photographs and illustrations of key features of females and males of both species. We also provide a key to adult females and males of the four species of Austrosphaeromias.Se describe e ilustra una nueva especie de mosquita predadora, Austrosphaeromias setosa sp. nov., a partir de adultos macho y hembra colectados en la región Andino-patagónica de Argentina y Chile. Además, sobre la base del examen de la especie tipo de Austrosphaeromias Spinelli, 1997 y de ejemplares recientemente colectados en las proximidades de la localidad tipo, se describen e ilustran la hembra de Austrosphaeromias chilensis (Ingram & Macfie, 1931) y el macho, previamente desconocido. Las descripciones son acompañadas por fotografías a color e ilustraciones de los caracteres clave de hembras y machos de ambas especies. Se brinda, además, una clave para adultos hembra y macho de las cuatro especies de Austrosphaeromias.Centro de Estudios Parasitológicos y de Vectore
Una especie nueva de mosquita predadora del género Patagónico Austrosphaeromias con la redescripción de A. Chilensis (Diptera, Ceratopogonidae).
A new species of predaceous midge, Austrosphaeromias setosa sp. nov., is described and illustrated from adult males and females collected in the Patagonian-Andean region of Argentina and Chile. Based on examination of the type species of Austrosphaeromias Spinelli, 1997 and recently collected specimens from near the type-locality, the female and previously unknown male of Austrosphaeromias chilensis (Ingram & Macfe, 1931) are also described and illustrated. Descriptions are accompanied by color photographs and illustrations of key features of females and males of both species. We also provide a key to adult females and males of the four species of Austrosphaeromias.Se describe e ilustra una nueva especie de mosquita predadora, Austrosphaeromias setosa sp. nov., a partir de adultos macho y hembra colectados en la región Andino-patagónica de Argentina y Chile. Además, sobre la base del examen de la especie tipo de Austrosphaeromias Spinelli, 1997 y de ejemplares recientemente colectados en las proximidades de la localidad tipo, se describen e ilustran la hembra de Austrosphaeromias chilensis (Ingram & Macfie, 1931) y el macho, previamente desconocido. Las descripciones son acompañadas por fotografías a color e ilustraciones de los caracteres clave de hembras y machos de ambas especies. Se brinda, además, una clave para adultos hembra y macho de las cuatro especies de Austrosphaeromias.Centro de Estudios Parasitológicos y de Vectore
The spatio-temporal mapping of epileptic networks: Combination of EEG–fMRI and EEG source imaging
Simultaneous EEG–fMRI acquisitions in patients with epilepsy often reveal distributed patterns of Blood Oxygen Level Dependant (BOLD) change correlated with epileptiform discharges. We investigated if electrical source imaging (ESI) performed on the interictal epileptiform discharges (IED) acquired during fMRI acquisition could be used to study the dynamics of the networks identified by the BOLD effect, thereby avoiding the limitations of combining results from separate recordings.
Nine selected patients (13 IED types identified) with focal epilepsy underwent EEG–fMRI. Statistical analysis was performed using SPM5 to create BOLD maps. ESI was performed on the IED recorded during fMRI acquisition using a realistic head model (SMAC) and a distributed linear inverse solution (LAURA).
ESI could not be performed in one case. In 10/12 remaining studies, ESI at IED onset (ESIo) was anatomically close to one BOLD cluster. Interestingly, ESIo was closest to the positive BOLD cluster with maximal statistical significance in only 4/12 cases and closest to negative BOLD responses in 4/12 cases. Very small BOLD clusters could also have clinical relevance in some cases. ESI at later time frame (ESIp) showed propagation to remote sources co-localised with other BOLD clusters in half of cases. In concordant cases, the distance between maxima of ESI and the closest EEG–fMRI cluster was less than 33 mm, in agreement with previous studies.
We conclude that simultaneous ESI and EEG–fMRI analysis may be able to distinguish areas of BOLD response related to initiation of IED from propagation areas. This combination provides new opportunities for investigating epileptic networks
Modular group algebras with almost maximal Lie nilpotency indices. I
Let K be a field of positive characteristic p and KG the group algebra of a
group G. It is known that, if KG is Lie nilpotent, then its upper (or lower)
Lie nilpotency index is at most |G'|+1, where |G'| is the order of the
commutator subgroup. The authors have previously determined the groups G for
which this index is maximal and here they determine the G for which it is
`almost maximal', that is the next highest possible value, namely |G'|-p+2
Comparison between Aorto-bifemoral Bypass and Aorto-iliac Kissing Stent in Patients with Complex Aorto-iliac Obstructive Disease
Introduction: To retrospectively compare early and late results of aorto-bifemoral bypass and endovascular recanalization with the kissing stent technique in the management of TASC II C and D lesions in the aorto-iliac district in a multicentre study.
Methods: From January 2006 to December 2013, 293 open and endovascular interventions for TASC-II class C and D aorto-iliac obstructive lesions were performed at three Italian teaching hospitals. In 210 patients the intervention was performed for aortic and bilateral iliac involvement: an aorto-bifemoral bypass was performed in 82 patients (Group 1) while in the remaining 128 an endovascular recanalization with the kissing stent technique (Group 2). Early results in the two groups were compared with \u3c72 test. Follow up results were analyzed with Kaplan-Meyer curves and compared with log rank test.
Results: There were no differences between the two groups in terms of demographic data, comorbidities, or risk factors for atherosclerosis, except for a higher percentage of females and of diabetic patients in group 2. Critical limb ischemia was present in 29 patients in group 1 (35.5%) and in 31 patients in group 2 (24%, p = 0.07). Technical success in group 2 was 98.5%; two patients required immediate conversion to open surgery for iliac rupture. There was one peri-operative death in group 1 (mortality rate 1.2%, p = 0.2 in comparison with group 2). Four peri-operative thromboses occurred; two in group 1 and two in group 2 (in one case requiring conversion to open surgical intervention) and no amputations at 30 days were recorded. Post-operative local and systemic complications occurred in 20 patients in group 1 (24%) and in 13 patients in group 2 (10% p = 0.006). Mean duration of follow up was 39 months (range 1 \u2013108 months). Survival rates at 6 years were 65% (SE 0.07) in group 1 and 82% (SE 0.05) in group 2 (p = 0.07). At the same time interval, primary, assisted primary and secondary patency rates were similar; re-intervention rates were 6% in group 1 (SE 0.05) and 11% in group 2 (SE 0.04; p = 0.2).
Conclusion: Endovascular repair of complex aorto-iliac lesions with the kissing stent technique, in the multicentre experience, provided similar satisfactory early and late results to those obtained with open surgery, however with a lower rate of peri-operative complications and a trend towards better long-term survival
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