164 research outputs found
L'espace social, lecture géographique des sociétés
No full text@incollection{OL-TURBOUTF-2005, author = {Loew-Turbout, F.}, title = {L'espace social, lecture géographique des sociétés}, pages = {217-234}, year = {2005}, publisher = {Armand Colin} }International audienc
Philornis angustifrons Loew 1861
No full textPhilornis angustifrons (Loew, 1861) Hylemyia angustifrons Loew, 1861: 41. Syntypes male and female, not found (not in MCZ or ZMHB). Type-locality: Cuba. Described in the genus Hylemyia by Loew (1861), this species was based on material from Cuba. According to Carvalho et al. (2005), syntypes (male and female) were not found in MCZ or ZMHB. This species has been mistakenly recorded from Argentina by Garcia (1952). In synonymy with it is Mydaea anomala (Jaennicke, 1867), originally described as Mesembrina anomala, also from Cuba. This species is not the same as Mydaea anomala of Nielsen (1913) (= Philornis anomala of Aldrich 1923), which was described as P. nielseni by Dodge (1968). Both Stein (1918) and Dodge and Aitken (1968) mentioned that this species shows considerable intraspecific variation, e.g., in size and colour and, “likewise there is much variation in the puparia of such species as trinitensis, sanguinis and deceptivus, in general the larger puparia are dark brown with a small deep pit, whereas the smaller puparia are light brown with the pit broad and shallow (Dodge & Aitken 1968: 135). Other references to the names angustifrons and anomala in Argentina refer to anomala of Nielsen (1911, 1913). Even the synonymy of P. angustifrons (Loew) with anomala Nielsen was a confused interpretation by Aldrich (1923). The name P. angustifrons of Garcia (1952) also does not correspond to this species. He used this name, following Aldrich’s (1923) synonymy. This synonymy must not be accepted. Aldrich (1923) used Nielsen’s (1911, 1913) figures to represent the posterior spiracular slits of the puparia of M. torquans Nielsen and M. anomala of Nielsen (not Jaennicke) respectively. But on page 307, when discussing the synonymy with angustifrons Loew, he used the name anomala referring to M. anomala Jaennicke and not M. anomala of Nielsen. This is clear because he mentioned that “both species are described from Cuba, clearly referring to angustifrons Loew and anomala Jaennicke. Also, M. anomala of Nielsen 1913 (slits figured in his Fig. 3) could not be P. angustifrons Loew, as the posterior spiracular slits of this species are very sinuous, much more similar to those of P. pici, illustrated in his Fig. 5. Returning to Garcia’s (1952) angustifrons, his description, based on three females and one male (taken as larvae from a young chicken) from Monte Bello (Tucumán), is not very detailed, but differs from the true P. angustifrons in some aspects such as general colour of the thorax, r-m cross vein with a small mark and the large frons of the female with almost parallel margins. He described the female, but his Figure 1 (op. cit.: 279) shows the head of a male that is also not of P. angustifrons (as also observed by Dodge 1968). By mistake he mentioned the author of this species as (Jaenn., 1866) (see also Dodge 1968). Dodge (1968) considered that Garcia’s (1952) angustifrons could be anomala of Nielsen (1913), but the male head illustrated in his Figure 1 “fits neither nielseni nor angustifrons (p. 158). He doubtfully included Philornis angustifrons (Jaenn., 1866) of Garcia (1952) in synonymy with P. nielseni. Dodge and Aitken (1968) redescribed and Couri (1984) diagnosed P. angustifrons. The species shows intra-specific variation in colour, size, puparial concavity (depth and rugosity) and male surstyli (Dodge & Aitken 1968; Couri 1984).Published as part of Couri, Márcia S., Antoniazzi, Leandro R., Beldomenico, Pablo & Quiroga, Martin, 2009, Argentine Philornis Meinert species (Diptera: Muscidae) with synonymic notes, pp. 52-62 in Zootaxa 2261 on pages 56-57, DOI: 10.5281/zenodo.19076
The Ten Commandents in Concept of Rabbi Loew and in Reflection of Rabbinic Tradition
No full textThis paper focuses on some areas related to the topic of the Ten Commandments. Main part is a translation of chosen chapters of the work Tiferet Yisrael. Namely Chapters 33-36, which describes the opinion of the author (Rabbi Loew) on this topic. The translation is accompanied by commentary, which make it more comprehensive, and it is compared with texts that are in the environment of traditional Judaism deemed as essential. Powered by TCPDF (www.tcpdf.org
Eumerus amoenus Loew 1848
No full text<i>Eumerus amoenus</i> Loew, 1848 <p> <i>Eumerus amoenus</i> Loew, 1848a: 132. Type locality: Italy, Greece, Sicily.</p> <p> <b>Material examined</b>: 1 female, Kom Oshem, 25.III.2001, leg. El-Hawagry [in personal collection of El-Hawagry]; 1 female, Tisfa, 31.VIII.1929, leg. H.C.E. & M.T., specimen published in Shaumar & Kamal (1978); 1 male, Burg, 7.II.1927, leg. H.C. E & M.T.; 1 female, Helwan, 12.X.1935, leg. Farag; Ismailia, 20.XI.1926, leg. Tewfik [EFC]; 2 males, 1 female, Mariout, El-Burg, 7.III.1925, leg. Efflatoun, specimens published in Shaumar & Kamal (1978) [PPDD].</p> <p> <b>World distribution</b>: PA: Algeria, Arabian Peninsula, Armenia, Azerbaijan, Azores, Canary Is., Egypt, France, Georgia, Greece, Italy, Mongolia, Morocco, Spain, Russia, Switzerland, Tajikistan, Turkey, former Yugoslavia.</p> <p> <b>Egyptian localities</b>: Coastal Strip: Abu-Mina, El-Burg, Mariout. Eastern Desert: Suez, Wadi Ibtadi. Fayoum: Kom Oshem. Lower Nile Valley & Delta: Abu-Rawash, Boulaq El-Dakrour, Cairo, El-Katta, El-Mansouriya, Ezbet El-Nakhl, Kafr Hakim, Kirdassa, Kombira, Maadi, Qubba, Shubra, Tisfa. Upper Nile Valley: Komombo. Western Desert: Kharga Oasis. [Sources: Efflatoun (1922), Shaumar & Kamal (1978), the examined museum material and the examined material collected by the first author].</p> <p> <b>Activity period in Egypt</b>: Throughout the year.</p> <p> <b>Remarks</b>: <i>E. amoenus</i> is often bred fromonion, <i>Allium cepa</i> L. (Shaumar & Kamal 1978), where it is regarded as a pest (Gendy 1978). Efflatoun (1922) stated that <i>E. amoenus</i> is the commonest species of the genus in Egypt, and may be found from October to June throughout the Nile Valley from the Mediterranean coast to Upper Egypt and in Fayoum. This species flies among low-growing vegetation at up to 1m from the ground, often in partiallyshaded conditions. It uses short vegetation on the ground rather than bare soil or stones to settle on (Speight 2017).</p>Published as part of <i>El-Hawagry, Magdi S. & Gilbert, Francis, 2019, Catalogue of the Syrphidae of Egypt (Diptera), pp. 201-248 in Zootaxa 4577 (2)</i> on pages 216-217, DOI: 10.11646/zootaxa.4577.2.1, <a href="http://zenodo.org/record/2629643">http://zenodo.org/record/2629643</a>
Spectroscopic Study of the Function of Carotenoids in Photosynthesis
No full textSpectroscopic Study of the Function of Carotenoids in Photosynthesis Abstract of the thesis Author: Martin Loew Supervisor: Prof. RNDr. Jan Hala, DrSc. Department: Department of Chemical Physics and Optics The research of the role of carotenoids in photosynthesis is a fast-growing branch of a biophysical and biochemical research of photosynthesis principles. The Optical Spectroscopy Group of the Department of Chemical Physics and Optics at the Faculty of Mathematics and Physics of Charles University in Prague is fully engaged at this scientific field. The objective of this work was a Spectroscopic characterization of photosynthetic pigments isolated from the green algae Scenedesmus Quadricauda and localization of their absorption within the spectrum of intact cells. Crucial adaptations at the low-temperature setup were carried out prior to the measurements. The new depth recorder was installed inside the optical cryostat, which meant a significant improvement of liquid helium operation. A new Peltier-cooled photomultiplier Hamamatsu was added to the fluorescence measurement setup to enable the detection of very low optical signals. The setup for absorption measurements was equipped with a new stable light source - 1000 W wolfram bulb connected to stabilised power supply. All the pigments contained in green..
Merodon gallicus Vujić & Radenković, 2012 et Psilota atra (Loew, 1817) en Suisse et quelques nouvelles mentions genevoises (Diptera : Syrphidae)
No full textLes premières données documentant la présence en Suisse de Merodon gallicus Vujić & Radenković 2012, espèce jusqu'alors présumée endémique de France, ainsi que de Psilota atra (Loew, 1817), sont présentées et accompagnées d'éléments sur l'identification et la biologie de ces espèces. La présence actuelle de Myolepta vara (Panzer, 1798) en Suisse est également confirmée par plusieurs données. De plus, six nouvelles espèces sont ajoutées à la liste du canton de Genève et la présence récente (postérieure à 2000) de 13 espèces est confirmée, principalement grâce à un inventaire des syrphes au Bois des Bouchets (Chancy) en 2020. Cette réserve forestière semble abriter et préserver une large gamme de syrphes saproxyliques et emblématiques de la faune suisse
Effects of altering CpG dinucleotide composition in small DNA viruses
No full textCpG dinucleotides are underrepresented in mammalian genomes and in many viruses infecting them. Previous studies have shown that increasing CpG frequencies in various RNA viruses and retroviruses reduces replicative fitness but the effects of this compositional modification are unknown in DNA viruses. To investigate this, the effects of increasing CpG frequencies were determined in the parvovirus minute virus of mice (MVM) at various stages of the viral life cycle and a system was set up for the murine polyoma virus (MPyV).
Part of the VP gene (24.4 % of the viral genome) of MVM was replaced by synonymously coded inserts with a CpG-high sequence and several other compositional mutations. Infection time courses and TCID50s were performed to test replicative fitness. Genome copy numbers and viral RNA levels were measured via RT-qPCR. Immunofluorescence, western blots and in vitro translation were used to visualise and measure protein production and distribution. Knockout cell lines were used to find antiviral mechanisms involved.
Compared to the wild type and scrambled virus, CpG-high viruses showed impaired growth curves in vitro. Immunofluorescence assays showed that the CpG-high viruses could establish infection and protein production in fewer cells. RT-qPCR revealed that viral mRNA levels were reduced in the CpG-high mutant, a phenotype that partially reverted in ZC3HAV1 (ZAP) knockout cells.
Increasing CpGs in MVM led to reduced mRNA levels, which impacted all aspects of the viral life cycle, leading to fewer productively infected cells and reduced viral progeny numbers though there might be further restriction later in the replication cycle. This is thought to be due at least in part to selective recognition of CpGs in RNA by ZAP
Uniaxial Pressure Control of Competing Orders in a High Temperature Superconductor
No full textThis file contains the raw data use in the publication 'Uniaxial Pressure Control of Competing Orders in a High Temperature Superconductor' by H.-H. Kim, S. M. Souliou, M.E. Barber, E. Lefrancois, M. Minola, M. Tortora, R. Heid, N. Nandi, R. A. Borzi, G. Garbarino, A. Bosak, J. Porras, T. Loew, M. König, P.M. Moll, A. P. Mackenzie, B. Keimer, C. W. Hicks and M. Le Tacon.
Source code for the first principle calculations is also provided, alongside with the instruction to use them.
This code was developed at the Karlsruhe Institute of Technology by Rolf Heid.
Any use of the software beyond the context of this publication requires permission of the author
Mixed-block neural architecture search for medical image segmentation
No full textDeep Neural Networks (DNNs) have the potential for making various clinical procedures more time-efficient by automating medical image segmentation. Due to their strong, in some cases human-level, performance, they have become the standard approach in this field. The design of the best possible medical image segmentation DNNs, however, is task-specific. Neural Architecture Search (NAS), i.e., the automation of neural network design, has been shown to have the capability to outperform manually designed networks for various tasks. However, the existing NAS methods for medical image segmentation have explored a quite limited range of types of DNN architectures that can be discovered. In this work, we propose a novel NAS search space for medical image segmentation networks. This search space combines the strength of a generalised encoder-decoder structure, well known from U-Net, with network blocks that have proven to have a strong performance in image classification tasks. The search is performed by looking for the best topology of multiple cells simultaneously with the configuration of each cell within, allowing for interactions between topology and cell-level attributes. From experiments on two publicly available datasets, we find that the networks discovered by our proposed NAS method have better performance than well-known handcrafted segmentation networks, and outperform networks found with other NAS approaches that perform only topology search, and topology-level search followed by cell-level search
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