425 research outputs found
Cataglyphis laylae Cedric A. Collingwood & Donat Agosti & Mostafa R. Sharaf & Antonius van Harten 2011, nov. spec.
No full textCataglyphis laylae Collingwood nov. spec. Plates 96–103 Cataglyphis desertorum Forel, 1894, teste Collingwood, 1985; unavailable name according to Agosti (1990). Specimens examined: Holotype: 1 ☿, United Arab Emirates, al-Ain [24°13'N 55°46'E], iii.1995, leg. C.A. Collingwood (MHNG). Paratypes: 3 ☿, al-Ain zoo, 13.iii.2005, CAC. 1 ☿, Remah, 9.iii.1995, CCA. 3 ☿, Remah, resthouse, 250 m, irrigated sand dune [24°10'37"N 55°18'6"E], 18.iii.1995, leg. D. Agosti. 6 ☿, Remah, resthouse, 250 m, irrigated sand dune, nest with one entrance, [24°10'37"N, 55°18'6"E], 18.iii.1995, leg. D. Agosti. 1 ☿, Sharjah Desert Park, 5–6.x.2004, AvH; 1 ☿, 3.iii.2005, CAC. 1 ☿, al- Za'aba, 100 m, sandy soil with Rhaisa stricta [23°43'20"N, 55°33'49"E], 22.iii.1995, leg. D. Agosti. Description: A large worker from al-Ain was selected as holotype. The measurements are as follows: total length 8.40; head width 3.60; head length 4.20; scape length 3.84; funicular segment I 0.40; funicular segment II 0.23; petiole length 1.10; petiole width 0.72. Colour dark reddish brown. There are no exterior hairs on the scapes or hind tibia. The gaster, petiole and propodeum have dorsal hairs. Remarks: This species thought to correspond with C. desertorum has to be described as a new species. In fact it is one of the commonest Cataglyphis in southern Arabia. The main distinguishing feature compared with other dark Cataglyphis is the slender petiole, which has the anterior face more sloped than in other similar species such as C. niger (André, 1882) and C. savignyi (Dufour, 1862). Biology: Cataglyphus laylae nov. spec. does not appear to occur in open sandy desert and is most abundant in disturbed habitats such as man-developed plantations and open cultivated fields. Distribution: This species was recorded by Collingwood (1985) as C. desertorum from Saudi Arabia and Oman and as Cataglyphis spec. by Collingwood & Agosti (1996). Etymology: The new species is named after a village settlement called “Layla”, just north of Riyadh (Saudi Arabia) in the area where the author (CAC) first encountered it in numbers in an Acacia plantation.Published as part of Cedric A. Collingwood, Donat Agosti, Mostafa R. Sharaf & Antonius van Harten, 2011, Order Hymenoptera, family Formicidae, pp. 1-70 in Arthropod fauna of the UAE 4 on page 54, DOI: 10.5281/zenodo.116858
Organic geochemistry of the Cenomanian-Turonian sequence in the Bakr area, Gulf of Suez, Egypt
No full textFormicidae Latreille 1809
No full text<p> Family <b>Formicidae</b> Latreille, 1809</p> <p> The senior author collected 37 ant species in Dhofar, including 11 species recorded for the first time from Oman: <i>Camponotus diplopunctatus</i> Emery, 1915, <i>Cardiocondyla minutior</i> Forel, 1899, <i>Cardiocondyla wroughtonii</i> (Forel, 1890), <i>Carebara arabica</i> (Collingwood & van Harten, 2001), <i>Leptanilla islamica</i> Baroni Urbani, 1977, <i>Monomorium clavicorne</i> André, 1881, <i>Monomorium floricola</i> (Jerdon, 1851), <i>Strumigenys membranifera</i> Emery, 1869, <i>Anochetus sedilloti</i> Emery, 1884, and <i>Hypoponera ragusai</i> (Emery, 1894). In total, 130 ant species are now known from Oman, including 53 from Dhofar (see Appendix)</p>Published as part of <i>Sharaf, Mostafa R., Wetterer, James K., Mohamed, Amr A. & Aldawood, Abdulrahman S., 2022, Faunal composition, diversity, and distribution of ants (Hymenoptera: Formicidae) of Dhofar Governorate, Oman, with updated list of the Omani species and remarks on zoogeography, pp. 1-106 in European Journal of Taxonomy 838 (1)</i> on page 5, DOI: 10.5852/ejt.2022.838.1925, <a href="http://zenodo.org/record/7094306">http://zenodo.org/record/7094306</a>
Influence of radiographic techniques on the measurement of femoral anteversion angles and a conformation score of pelvic limbs in L abrador retrievers
No full textObjective
To determine repeatability of and correlation between 2 radiographic measurements of femoral anteversion angles (FAA) and to determine their influence on a score derived from tibial plateau angle (TPA) and FAA to predict the risk of cranial cruciate ligament disease (CCLD).
Study Design
Prospective clinical study.
Animals
Forty-eight Labrador retrievers with or without CCLD.
Methods
FAA and CCLD scores were calculated for each limb from extended pelvic radiographs (t-FAA) or angled (a-FAA) projections of the femur by 3 investigators. One investigator repeated measurements twice. Data were analyzed for repeatability, correlation between t-FAA and a-FAA, and their influence on CCLD scores.
Results
FAA correlated most strongly with the distance between the femoral head and the femoral axis on mediolateral radiographs, a measurement with excellent repeatability. t-FAA and a-FAA correlated with each other (r > 0.79, P < .0001), although t-FAA were about 1° greater than a-FAA (P = .01). Intrainvestigator and interinvestigator repeatability of the CCLD score was fair when derived from t-FAA and good to excellent when derived from a-FAA. CCLD scores differed between radiographic techniques but led to different predictions in only 9 (10%) limbs, all with lower TPA and CCLD scores than the rest of the population.
Conclusion
a-FAA correlated strongly with t-FAA and improved the repeatability of CCLD scores within and between investigators.
Clinical significance
A craniocaudal angled beam projection of the femur is a suitable alternative to a ventrodorsal pelvic radiograph when measuring FAA and may improve the repeatability and positive predictive value of CCLD scores
Simulation of the Transition Phase for an Optimally-Controlled Tethered VTOL Rigid Aircraft for AirborneWind Energy Generation
No full textAirborne wind energy (AWE) is an innovative renewable energy technology, with the potential to substantially reduce the cost of energy. This paper introduces a solution for one of the main challenges of AWE systems, which is the automated reliable launching of the airborne system component. Our launch system configuration consists of a rigid-wing flying object (aircraft) equipped with a VTOL subsystem and launched vertically, with the fuselage also directed vertically. We formulate the Transition phase as an optimal control problem, so as to determine the optimal control inputs which constitute the control surface deflections and the thrust force; which steers the aircraft from hovering with its nose upwards to forward flight. Subsequently, we simulate the trajectory for two cases of optimality; (a) minimizing the power consumption and (b) minimizing the endurance, during this phase. Choosing the case of minimizing power is more reasonable for our application, as the time interval difference between the two cases is almost 3 seconds only, but with a huge difference in the power consumed. We present a detailed mathematical analysis of the system followed by extensive simulation results.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Wind Energ
Correction: Surgical specialists face higher a risk for malpractice compared to their non-surgical colleagues
No full textCorrection to: Scientific Reportshttps://doi.org/10.1038/s41598-024-81058-x, published online 05 December 2024 The original version of this Article contained an error in the spelling of the author M. M. Mokhles which was incorrectly given as Mostafa Mokhles. The original Article has been corrected
Bibliographics for the 983 eprints in the live archives of E-LIS : trends and status report up to 7th July 2004, based on author-self-archiving metadata
No full textThe priority for ideas and philosophy related to "Network Theory" have been traced back and documented by Braun(2004),and credit goes to Karinthy(1929).The IT has empowered to realise it, as the most practical phenomena and it is no more a humour. The OAI (Open Archives Initiatives)and ACIS (Academic Contributor Information System)are progressive in the direction ,which may lead to realise the "Collective Genius" at global level. Focus of present study is on Author-Self-Archiving (A-S-A)Metadata of the 983 Eprints in the Live Archives of the E-LIS (EPrints of Library and Information Science),which were approved till 7th July 2004.The A-S-A Metadata was used for librametric analysis. Self-explanatory bibliographics are illustrated.The highlights include: Conference papers (34%); highest approval, June 2004 (28%); published archives (76%);not refereed (52%); not in public domain (60%); highest self-archiving-author (De Robbio, Antonella).The Nos. of EPrints having single JITA domain specifications were: Theoretical and general aspects of libraries and information(27); Information use and sociology of information(80);Users,literacy and reading(13);Libraries as physical collections(30);Publishing and legal issues(57);Management(13);Industry, profession and education(36);Information sources, supports, channels(113) ; Information treatment for information services, Information functions and techniques (101); Technical services libraries, archives and museums(25); Housing technologies(1); Information technology and library technology(92); and Inter-domainery (395) i.e. having specifications of two or more than two JITA classes
Paratrechina longicornis
No full textParatrechina longicornis (Latreille, 1802) (Figure 7 (a–c)) Formica longicornis Latreille, 1802: 113 (w.) Senegal. Afrotropical Diagnosis Worker. A relatively small species (TL 2.30–3.00); antennae long with 12 segments; scapes exceptionally long, when laid back from their insertions surpassing posterior margin of head by at least one-half its length; eyes close to posterior margin of head; legs extraordinarily long. Colour: head, mesosoma, petiole and gaster dark brown to blackish brown; body with faint bluish iridescence. Pilosity long, stout, scattered, suberect to erect, greyish or whitish setae. Material examined Yemen, Socotra Island, Qalansyia, W. Taisoh, 25 April 2014, 67 m, (M. R. Sharaf leg.), 12.65880°N, 53.46988°E (7 w, KSMA); Yemen, Socotra Island, Dehejamo, 22 April 2014, 563 m, (M. R. Sharaf leg.), 12.59049°N, 54.05205°E (25 w, KSMA); Yemen, Socotra Island, Haydibo, Erheno, 19 April 2014, 33 m, (M. R. Sharaf leg.), 12.65023°N, 54.04016°E (14 w, KSMA); Yemen, Socotra Island, Himihil Protectorate, 23 April 2014, 372 m, (M. R. Sharaf leg.), 12.57615°N, 54.30651°E (5 w, KSMA); Yemen, Socotra Island, W. Jo’ o, 21 April 2014, 196 m, (M. R. Sharaf leg.), 12.54038°N, 54.17186°E, (6 w, KSMA); Yemen, Socotra Island, Himihil Protectorate, 23 April 2014, 355 m, (M. R. Sharaf leg.), 12.58954°N, 54.30570°E (1 w, KSMA); Yemen, Socotra Island, W. Ayhift, 20 April 2014, 198 m, (M. R. Sharaf leg.), 12.61155°N, 53.97755°E (3 w, KSMA); Yemen, Socotra Island, Deyishil village, 21 April 2014, 180 m, (M. R. Sharaf leg.), 12.52010°N, 54.17438°E (3 w, KSMA); Yemen, Socotra Island, Dixam, 24 April 2014, 610 m, (M. R. Sharaf leg.), 12.46557°N, 54.00247°E (1 w, KSMA). Geographic range Among the region’ s most successful invasive species (Wetterer 2008), this ant is frequently distributed by human commerce and usually found in disturbed sites. In many areas of Egypt and KSA, the senior author has observed high populations of this species where garbage and human wastes were found. It was recorded from several countries of the Arabian Peninsula, KSA (Collingwood 1985), Yemen (Collingwood and Agosti 1996), UAE (Collingwood et al. 2011), Socotra (Collingwood et al. 2004). Ecological and biological notes The known habitats of this species are diverse, no doubt enabling its wide distribution. We observed Paratrechina longicornis nesting in moist soil under a rock adjacent to a date palm tree. Another nest was collected from dry soil under shrub Frangula alnus Mill. (Rhamnaceae). Many workers were found in leaf litter under a date palm tree where the soil was moist and rich in accumulated sheep and goat faeces. Several workers were foraging in leaf litter on dry soil under an Eragrostis tef (Zucc.) Trotter (Poaceae) tree, where the soil was dry. A nest was observed under a rock in moist, compacted, clay soil. Hundreds of workers were foraging in moist leaf litter and on twigs of a small shrub. Several workers were nesting under a stone in humid soil and next to banana plantations. A nest was found under a rock next to a dragon blood tree, Dracaena cinnabari Balf. f. (Asparagaceae). This species has been reported as a pest in greenhouses in both temperate and tropical regions (Nylander 1856; Motschoulsky 1863).Published as part of Sharaf, Mostafa R., Fisher, Brian L., Collingwood, Cedric A. & Aldawood, Abdulrahman S., 2017, Ant fauna (Hymenoptera: Formicidae) of the Socotra Archipelago (Yemen): zoogeography, distribution and description of a new species, pp. 317-378 in Journal of Natural History (J. Nat. Hist.) (J. Nat. Hist.) 51 (5 - 6) on pages 330-332, DOI: 10.1080/00222933.2016.1271157, http://zenodo.org/record/518429
COVID-19: Time Series Datasets India versus World
No full textThis dataset consists of COVID-19 time series data of India since 24th March 2020.
The data set is for all the States and Union Territories of India and is divided into five parts, including
i) Confirmed cases;
ii) Death Count;
iii) Recovered Cases;
iv) Temperature of that place; and
v) Percentage humidity in the region.
The data set also provides basic details of confirmed cases and death count for all the countries of the world updated daily since 30 January 2020.
The end user can contact the corresponding author (Rohit Salgotra : [email protected]) for more details.
.
The Authors can Refer to and CITE our latest Papers on COVID:
1. Rohit Salgotra, Mostafa Gandomi, Amir H Gandomi. "Evolutionary Modelling of the COVID-19 Pandemic in Fifteen Most Affected Countries" Chaos, Solitons \& Fractals: (2020). https://doi.org/10.1016/j.chaos.2020.110118
2. Rohit Salgotra, Mostafa Gandomi, Amir H Gandomi. "Time Series Analysis and Forecast of the COVID-19 Pandemic in India using Genetic Programming" Chaos, Solitons \& Fractals: (2020). https://doi.org/10.1016/j.chaos.2020.109945
.
[Dataset is updated Once a Week
COVID-19: Time Series Datasets India versus World
No full textThis dataset consists of COVID-19 time series data of India since 24th March 2020.
The data set is for all the States and Union Territories of India and is divided into five parts, including
i) Confirmed cases;
ii) Death Count;
iii) Recovered Cases;
iv) Temperature of that place; and
v) Percentage humidity in the region.
The data set also provides basic details of confirmed cases and death count for all the countries of the world updated daily since 30 January 2020.
The end user can contact the corresponding author (Rohit Salgotra : [email protected]) for more details.
.
The Authors can Refer to and CITE our latest Papers on COVID:
1. Rohit Salgotra, Mostafa Gandomi, Amir H Gandomi. "Evolutionary Modelling of the COVID-19 Pandemic in Fifteen Most Affected Countries" Chaos, Solitons \& Fractals: (2020). https://doi.org/10.1016/j.chaos.2020.110118
2. Rohit Salgotra, Mostafa Gandomi, Amir H Gandomi. "Time Series Analysis and Forecast of the COVID-19 Pandemic in India using Genetic Programming" Chaos, Solitons \& Fractals: (2020). https://doi.org/10.1016/j.chaos.2020.109945
.
[Dataset is updated Once a Week
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