1,765 research outputs found
Obituary Doctor Françoise Athias Binche (1946–2013)
No full textJuvara-Bals, S.I., Bertrand, M. (2014): OBITUARY Doctor Françoise ATHIAS BINCHE (1946-2013). Acarologia 54 (2): 125-134, DOI: 10.1051/acarologia/20142120, URL: http://dx.doi.org/10.1051/acarologia/2014212
Effect of biofertilizers and neem oil on the entomopathogenic fungi beauveria bassiana (Bals.) vuill. and metarhizium anisopliae (Metsch.) sorok.
No full textThe in vitro fungitoxic effect of three biofertilizers, E.M.-4, Multibion Ô and Supermagro used in organic agriculture and the neem oil (Azadirachta indica A. Juss) on the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana was studied. These products were mixed in a medium where the two fungi were inoculated, and germination, vegetative growth and conidiogenesis were assessed. The biofertilizers Supermagro and E.M.- 4 showed to be less toxic for the two fungi whereas MultibionÔ caused major inhibition on M. anisopliae, with reductions in germination (-37.74%), colony diameter (-30.26%) and conidiogenesis (-42.62%). Neem oil promoted a larger negative effect on B. bassiana, inhibiting germination (-45.27%), colony diameter (-36.62%) and conidiogenesis (-84.93%)
(Table 1j) Radiocarbon dating of bottom sediments from Station BalS-1399
No full text(Table 1j) Radiocarbon dating of bottom sediments from Station BalS-139
Transcript levels of −DMSO and +DMSO HepaRG-AMC-BALs.
No full text<p>Transcript levels are indicated as % of mean mRNA levels of two human liver samples and normalized for 18S ribosomal RNA. The change in transcript levels of +DMSO BALs relative to the −DMSO BALs are indicated with ↑ for upregulation and ↓ for downregulation. Abbreviations: DMSO, dimethyl sulfoxide; AMC-BAL, Academic Medical Center-bioartificial liver. Values are given as means ± standard deviations (n = 5 to 6). <i>P</i> values refer to −DMSO <i>versus</i> +DMSO BALs.</p
Holoparasitus aquilinus Ilinca Juvara-Bals 2017, sp. nov.
No full textHoloparasitus aquilinus sp. nov. Fig. 3 Holotype: Male; Morocco, Monte Lachab (Lechhab) near Beni Bajale (Beni Bejalle)-Beni Bouchaib, west Rif, near a spring, alt. 1700 m, leaf litter from Quercus ilex L.; 2.04. 1959 (Sp. 656). Paratype: 1 female; same data as for holotype. Diagnosis: Chelicera of male apex with movable digit hooked; fixed digit slightly curved, with 6-7 denticles, spermatodactyl arched. Epigynium with a long triangular apex and 2 spine-like lateral prongs; subapical epigynial structure a large slightly denticulate strip. Etymology: The species name is a Latin cognomen derived from “ aquila ” = eagle, meaning “the eaglelike”, and refers to the shape of the apex of the movable digit of the male chelicera being hooked like the beak of an eagle. Description of male: Length of squashed idiosoma 600-624. Dimensions of some podonatal setae: j1 = 30 others 24; opisthonatal setae very short, 6-7 long. Length of peritrematal shield 192-204. Ventral idiosoma: Sternogenital shield reticulated. Genital lamina with anterior margin rounded and with subgenital sclerite rectangular (Fig. 3C). Length of st1 = 36. Distance between setae: st1-st1’ = 72, st2-st2’ = 84, st3-st3’ = 96, st4-st4’ = 66. Gland pore gv1 and gv2 simple. Gnathosoma: Gnathotectum trispinate, with a large triangular central prong, with rounded apex and two tiny lateral spines (Fig. 3E). Corniculi conical, with small, sharp protuberance situated medially (Fig. 3B). Palptrochanter without protuberance, setae v1 and v2 pilose. Hypognathal groove with 4 large, non-denticulate rows. Chelicera (Fig. 3 A): straight fixed digit with 1 denticle above pilus dentilis and 6 more below it; movable digit (96 long) with hooked apex, 4 denticles and a tooth on internal margin; arm of spermatodactyl arched; arthrodial membrane with short brush-like process. Legs: Coxa II with a fan-shaped ridge of 7-9 tiny denticles located anterolaterally (Fig. 3 F). Leg II armed as follows (Fig. 3D): rounded femoral apophysis and oval, inward bent axillary process, their apices at same level; between them a small protuberance. Triangular genual spur located near distal margin of the segment. Rectangular tibial apophysis 30 long, its apex slightly concave. Measurements: tarsus I = 156; tarsus IV =144. Description of female: Length of squashed dorsal idiosoma 672. Length of some setae: on podonotum j1 = 25, r1 = 12, others 36; opisthonotum with tiny setae, their length 6-12. Length of peritrematal shield 221. Ventral idiosoma: Presternal plate serrated. Sternal shield reticulated, gland pore gv1 under seta st3 on posterior margin; length of sternal setae 48-50 (Fig. 3 G). Paragynial shield with small rounded posterior protrusions and metagynial sclerite ellipsoidal (Fig. 3 I). Epigynium: anterior margin with two lateral spines and long median apex (90 long); subapical structure a basal slightly denticulate strip (Fig. 3 H). Gland pore gv2 simple. Endogynium: a simple oval cup covered by a hyaline membrane and two rounded protrusions (Fig. 3 J). Measurements: epigynium: height =180, basal width = 192; h/b = 0.94; Gnathosoma: Only the following character discernible: palptrochanter without protuberance between simple v1 and pilose. v2 Legs: Length of tarsus I and IV = 180 long. Remarks: I examined only a female and a male, both not in very good condition, but the main features which distinguish the new species from others in the mallorcae- group could be properly observed. The female of H. aquilinus sp. nov. can be distinguished by the long triangular apex on the anterior margin of the epigynium and by the endogynium being a simple, oval cup. The male is easily recognizable by the shape of the chelicera. More material will be necessary in order to discern other characters especially those of the endogynium.Published as part of Ilinca Juvara-Bals, 2017, New and rare species of Holoparasitus Oudemans, 1936 (Acari, Gamasida, Parasitidae) from the Athias-Henriot Collection, pp. 225-239 in Revue suisse de Zoologie 124 (2) on page 230, DOI: 10.5281/zenodo.89350
Patogenicidad del hongo Beauveria bassiana (Bals.) Vuill. sobre la chinche Monalion dissimulatum distant plaga del cacaotero Teobroma Cacao L.
No full textEnsayos previos con varias especies de hongos entomopatógenos sobre la chinche Monalion dissimulatum Distant (Hem.; Miridae) dieron prioridad al patógeno Beauveria bassiana (Bals.) Vuill. Se evaluaron dos cepas de B. bassiana una procedente de Metamasius hemipterus sericeus (Olivier) (Col; Curculionidae) (Bb T 011) y otra aislada de M. dissimulatum (Bb 012), a dosis crecientes de 1 x 106,2.5 X 103,5 X 103,7.5 X 103 y 1 X 109 conidias/ml. Todos los insectos tratados, independiente de su estado de desarrollo biológico, fueron susceptibles al ataque patogénico de las dos cepas. Para ambas cepas fungosas, la dosis a la cual se obtuvo el mayor porcentaje de mortalidad significativa estuvo entre 2.5 x 103 y 7.5 X 103 conidias/ml, con mortalidades que variaron entre 33.75 - 49.75 y 43.75 - 62.5 para Bb T 011,68.75.86.87 y 78.12-89.37 para Bb 012 al cabo de 10 y 15 días respectivamente. La cepa Bb 012 fue más virulenta sobre M. dissimulatum que Bb T 011.Previus test with several entomopathogenic fungus species on Monalonion dissimulatum Distant bug (Hem.; Miridae) gave priority to 1he pathogen Beauveria bassiana (Bals.) Vuill. Two B. bassiana strains were evaluated: one of them comming from Metamasius hemipterus sericeus (Olivier) (Col.; Curculionidae) (Bb T 011) and the other isolated from M. dissimulatum (Bb 012), to 1 x 106,2.5 X 103,5 X 108,7.5 X 103 and 1 x 109 conidium/ml increasing dosage. All insects treated independently of its biologycal state of development were susceptibles to 1he pathogenic attack of 1he two strains. For OO1hfungis strains 1he dosage at which a higher percentage of significant mortality was obtained ranged between 2.5 x 103 and 7.5 x 1011 conidium/ml with mortality was ranged between 33.75 -49.75 and 43.75 - 62.5 for Bb T 011, 68.75 - 86.87 and 78.12- 89.37 for Bb 012 in 10 and 15 days respectivetly
Self-assembly of gas-phase synthesized magnesium nanoparticles on room temperature substrates
No full textAbstract: Magnesium nanoparticles (NPs) with initial size in the 10-50 nmrange were synthesized by inert gas condensation under helium flow and deposited on room temperature substrates. The morphology and crystal structure of the NPs ensemble were investigated as a function of the deposition time by complementary electron microscopy techniques, including high resolution imaging and chemical mapping. With increasing amount of material, strong coarsening phenomena were observed at room temperature: small NPs disappeared while large faceted NPs developed, leading to a 5-fold increase of the average NPs size within a few minutes. The extent of coarsening and the final morphology depended also on the nature of the substrate. Furthermore, large single-crystal NPs were seen to arise from the self-organization of primary NPs units, providing a mechanism for crystal growth. The dynamics of the self-assembly process involves the basic steps of NPs sticking, diffusion on substrate, coordinated rotation and attachment/coalescence. Key features are the surface energy anisotropy, reflected by the faceted shape of the NPs, and the low melting point of the material. The observed phenomena have strong implications in relation to the synthesis and stability of nanostructures based on Mg or other elements with similar features
Nd3+-Doped Lanthanum Oxychloride Nanocrystals as Nanothermometers
No full textRelated publication: Renero-Lecuna, C; Herrero, A; Jimenez de Aberasturi, D; Martínez-Flórez, M; Valiente, R; Mychinko, M; Bals, S; Liz-Marzán, LM. Nd3+-Doped Lanthanum Oxychloride Nanocrystals as Nanothermometers. J. Phys. Chem. C 2021, 10.1021/acs.jpcc.1c0582
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