24,935 research outputs found
Synthesis of Co(3)O(4) nanowire arrays supported on Ni foam for removal of volatile organic compounds
No full textCrystalline Co3O4 nanowire arrays freely supported on Ni foam are successfully synthesized using a template-free method. The effects of reaction time, concentration of reactants, and temperature on the morphology of the nanowires are studied. The results indicate that uniform Co3O4 nanowires could be synthesized at 90 degrees C, and a transformation of the samples' morphology from nanoparticles to nanowires to microrods is observed by controlling the concentration of the reactants. The well-ordered nanowires synthesized under the selected reaction conditions are composed of spinel Co3O4 with diameters of 500-580 nm and lengths of 6-8 microm. These nanowires show good catalytic activity for the ozone catalytic oxidation of toluene.Hui, K. N.; Yin, Cui-Lei; Hui, K. S.; Lee, J. Y.; Li, M.; Lee, S. K.; Tsui, K. L.; Chao, Christopher Y H; Kwong, C. W
Horniella awana Yin and Li, new species
No full text23. Horniella awana Yin and Li, new species Figs 40 A, 41; Map 6 Type material (1 ♂). Holotype, ♂, labeled ‘W. Malaysia: Pahang, Genting Highlands, Awana, 1150 m, 03.iv. 1993, Löbl & Calame, # 27 a / Holotype [red], ♂, Horniella awana sp. n., det. Yin & Li, 2014, MHNG’. Description. Male (Fig. 40 A). Length 3.26 mm. Head slightly longer than wide, HL 0.63 mm, HW 0.58 mm; anterolateral genal projections (Fig. 41 C) weakly indicated; median sulcus between antennal tubercles short; scapes (Fig. 41 B) lacking expansion at lateral margins; clubs (Fig. 41 A) formed by apical three moderately enlarged antennomeres; venter lacking lateral spines (Fig. 41 D). Maxillary palpomeres II slightly broadened from base toward apex. Each eye composed of about 40 facets. Pronotum longer than wide, PL 0.69 mm, PW 0.60 mm. Elytra wider than long, EL 0.83 mm, EW 1.25 mm; discal striae reaching apical 3 / 4 of elytral length. Protrochanters simple, profemora (Fig. 41 E) each with two tiny ventral denticles at base, protibiae (Fig. 41 F), mesotrochanters, mesofemora (Fig. 41 G), and mesotibiae (Fig. 41 H) simple; tarsomeres II normal, not extending to beneath tarsomeres III. Abdomen large, AL 1.11 mm, AW 1.30 mm, tergite IV (first visible tergite) with median carina extending pass half of tergal length, lacking lateral discal carinae, tergite V with thin median carina extending to apical 1 / 3 of tergal length. Sternite IX (Fig. 41 I) elongate, well-sclerotized. AeL 0.71 mm; aedeagus (Figs 41 J–L) with relatively stout, symmetric median lobe, apex obliquely and broadly rounded; endophallus composed of large, oval membranous part with many small denticles anterior to middle. Female. Unknown. Differential diagnosis. This species is placed as a member of the H. hirtella group. Males are similar to H. philippina and H. cibodas in general appearance as is discussed above. Horniella awana can be readily separated from these two species by its stout aedeagal form, which are distinctly elongate in both H. philippina and H. cibodas. Distribution. West Malaysia: Pahang (Map 6). Collection notes. The male was probably collected from litter samples by sifting and use of Winkler-Moczarski extractors, with this being the same procedure used by I. Löbl in Nepal and Thailand. Etymology. This species is named after the type locality Awana.Published as part of Yin, Zi-Wei & Li, Li-Zhen, 2014, Revision of the Oriental genus Horniella Raffray (Coleoptera, Staphylinidae, Pselaphinae), pp. 1-83 in Zootaxa 3850 (1) on pages 65-66, DOI: 10.11646/zootaxa.3850.1.1, http://zenodo.org/record/28686
Dual Catalytic Platform for Enabling sp3 a C–H Arylation & Alkylation of Benzamides
No full textA dual catalytic sp3 α C–H arylation and alkylation of benzamides with organic halides is described. This protocol exhibits an exquisite site selectivity, chemoselectivity, and enantioselectivity pattern, offering a complementary reactivity mode to existing sp3 arylation or alkylations via transition metal catalysis or photoredox events
Search for h(c) -> pi(+)pi(-) J/psi via psi(3686) -> pi(0)pi(+)pi(-) J/psi
No full textUsing a data sample of 448.1 x 10(6) psi(3686) events collected with the BESIII detector operating at the BEPCII, we perform search for the hadronic transition h(c)-> pi(+)pi(-) J/psi via psi (3686) -> pi(0)hc. No signals of the transition are observed, and the upper limit on the product branching fraction B(sigma(3686) -> pi(0)h(c))B(h(c) -> pi(+)pi(-) J/psi) at the 90% confidence level (C. L.) is determined to be 2.0 x 10(-6). This is the most stringent upper limit to date
Observation of e+e- →π+π-π0χb1,2 (1P) and search for e+e- →φχb1,2 (1P) at s =10.96 - 11.05 GeV
No full textMesozoic exhumation and ca. 10 Ma reactivation of the southern Yin Shan, North China, revealed by low-temperature thermochronology
No full textThe thermochronological history of orogens along plate margins provides unique constraints on regional tectonic evolution. Given existing thermochronological data that identify late Mesozoic–Cenozoic multiphase cooling events, we perform new apatite fission-track and (U-Th)/He low-temperature thermochronology on Wula Shan and Dahong Shan rocks to reveal the first stages of cooling along the southern Yin Shan orogenic belt, northern margin of the North China Block (NCB). Our new thermal history modeling suggests that cooling of the southern Yin Shan began in the Late Triassic (ca. 230 Ma), with rapid cooling at ca. 210–178 Ma and ca. 10~ Ma in the Wula Shan and ca. 200–160 Ma in the southern Dahong Shan. Late Triassic-Early Jurassic cooling stages are related to uplift and exhumation of the northern NCB, which given the tectonic setting of the late Indosinian event, are mainly interpreted as signatures of Mongol–Okhotsk Ocean subduction. Subsequently, enhanced plate convergence of East Asia with closure of the Mongol–Okhotsk Ocean led to intense thrust-nappe and intracontinental orogeny during the early Yanshanian. Importantly, our new finding of ca. 10 Ma rapid cooling of the Wula Shan at a rate of ~3.5 °C/Ma corresponds to coeval uplift and synrift basin sedimentation in the Ordos Block periphery, western NCB, which could mark the response to craton-scale rotational deformation. The completion of this low-temperature thermochronological database allows us to reappraise the Mesozoic exhumation and ca.10 Ma reactivation history and its implications for the southern Yin Shan
Horniella philippina Yin and Li, new species
No full text22. Horniella philippina Yin and Li, new species Figs 37 B, 39, 49F; Map 5 Type material (1 ♂, 2 ♀♀). Holotype, ♂, labeled ‘ Mt. Makiling, Lagunas, LUZON, rainfor. litter / R. A. Mores, Jan. 1968, berlesate / Holotype [red], ♂, Horniella philippina sp. n., det. Yin & Li, 2014, MHNG’. Paratypes: 1 ♀, labeled ‘ PHILIPPINES: Mt., Makiling, Laguns Prov., 4 km SE Los Banos, 07.v. 1977 / berlese, rotten figs, L.E. Watrous’ (MHNG); 1 ♀, labeled ‘ Philippines, Luzon: Lagunas, Mt. Banahaw nr. school about 1 km from Kinabuhayan, 500 m, degraded rainforest, 26.xi. 1995 [probably leg. J. Kodada]’ (MHNG). Each paratype bears a yellow type label similar to that of the holotype except ‘ Paratype ♂ (or ♀)’. Description. Male (Fig. 37 B). Length 3.09 mm. Head slightly longer than wide, HL 0.62 mm, HW 0.56 mm; anterolateral genal projections (Fig. 39 C) weakly indicated; median sulcus between antennal tubercles short; scapes (Fig. 39 B) lacking expansion at lateral margins; clubs (Fig. 39 A) formed by apical three moderately enlarged antennomeres; venter lacking lateral spines (Fig. 39 D). Maxillary palpomeres II slightly broadened from base toward apex. Each eye composed of about 45 facets. Pronotum slightly longer than wide, PL 0.65 mm, PW 0.62 mm. Elytra wider than long, EL 0.79 mm, EW 1.17 mm; discal striae reaching apical 3 / 4 of elytral length. Protrochanters simple, profemora (Fig. 39 E) each with two small ventral spines near base, protibiae (Fig. 39 F), mesotrochanters, and mesofemora (Fig. 39 G) simple, mesotibiae (Fig. 39 H) with indistinct apical spur; tarsomeres II normal, not extending to beneath tarsomeres III. Abdomen large, AL 1.03 mm, AW 1.20 mm, tergite IV (first visible tergite) with median carina extending to near half of tergal length, lacking lateral discal carinae, tergite V lacking median carina. Sternite IX (Fig. 39 I) elongate, well-sclerotized. AeL 0.68 mm; aedeagus (Figs 39 J–L) with elongate, nearly symmetric median lobe, apex rounded; endophallus composed of large, oval membranous part with many small denticles at apex. Female. Similar to male in general appearance; each eye composed of about 40 facets; profemora each with two small ventral spines near base, metatibiae simple at apex. BL 2.92–3.05 mm, HL 0.62–0.65 mm, HW 0.56–0.59 mm, PL 0.62–0.67 mm, PW 0.58–0.62 mm, EL 0.74–0.78 mm, EW 1.16–1.22 mm, AL 0.94–0.95 mm, AW 1.20–1.23 mm. Genital complex (Fig. 49 F) composed of transverse sclerite moderately sclerotized at middle and membranous at lateral parts. Differential diagnosis. This species is placed as a member of the H. hirtella group. Males share a similar general appearance with H. awana and H. cibodas (both described below), but can be readily separated from both by the presence of an elongate median lobe with a rounded apex of the aedeagus, and the endophallus having a large, oval, elongate membranous portion with many small denticles at the apex. Horniella awana has a stouter form of the aedeagus, while H. cibodas has a small, sharp apical sclerite at the apex of the endophallus. The elongate median lobe and endophallus that lacks any sclerite of H. philippina is shared with H. prolixo. These two species can be easily separated by the simple metatibiae of the former species while the latter species has a strongly modified apical portion of the metatibiae. Distribution. Philippines: Laguna (Map 5). Collection notes. Individuals were collected from litter samples by use of Berlese funnels in rainforests. Etymology. The species is named after the Philippines where the type locality lies.Published as part of Yin, Zi-Wei & Li, Li-Zhen, 2014, Revision of the Oriental genus Horniella Raffray (Coleoptera, Staphylinidae, Pselaphinae), pp. 1-83 in Zootaxa 3850 (1) on page 63, DOI: 10.11646/zootaxa.3850.1.1, http://zenodo.org/record/28686
Horniella sichuanica Yin and Li, new species
No full text8. Horniella sichuanica Yin and Li, new species Figs 13 B, 15, 48E; Map 1 Type material (4 ♂♂, 4 ♀♀). Holotype, ♂, labeled ‘ CHINA: Sichuan, Tianquan County, mountain near Liang’lu Township, 29 ° 55 ’ 46 ’’ N, 102 ° 23 ’ 33 ’’ E, 1500–1700 m, (mixed leaf litter, grass, sifted), 10.vii. 2012, Dai, Peng & Yin leg. / Holotype [red], ♂, Horniella sichuanica sp. n., det. Yin & Li, 2014, SNUC’. Paratypes: 3 ♂♂, 4 ♀♀, same label data as holotype, each bears a yellow type label similar to that of the holotype except ‘ Paratype, ♂ (or ♀)’ (SNUC). Description. Male (Fig. 13 B). Length 3.58–3.77 mm. Head about as long as wide, HL 0.67–0.69 mm, HW 0.69–0.72 mm; anterolateral genal projections (Fig. 15 C) distinct, anterior margins nearly rounded; median sulcus between antennal tubercles short; scapes (Fig. 15 B) greatly expanded at basolateral margins; clubs (Fig. 15 A) loosely formed by apical three moderately enlarged antennomeres; venter with pair of short lateral spines (Fig. 15 D). Maxillary palpomeres II stout, broadened at middle. Each eye composed of about 35 facets. Pronotum about as long as wide, PL 0.69–0.73 mm, PW 0.63–0.68 mm. Elytra wider than long, EL 0.91–0.98 mm, EW 1.13–1.19 mm; discal striae shallow, reaching apical 3 / 4 of elytral length. Protrochanters and profemora (Fig. 15 E) each with one distinct ventral spine, protibiae (Fig. 15 F) each with one small apical denticle; mesotrochanters (Fig. 15 G) each with one large ventral spine, mesofemora simple, mesotibiae (Fig. 15 H) each with small preapical denticle on mesal margin; tarsomeres II normal, not extending to beneath tarsomeres III. Abdomen large, AL 1.31–1.37 mm, AW 1.30–1.32 mm, tergite IV (first visible tergite) with short median carina extending to apical 1 / 5 of tergal length, lacking discal carinae, tergite V lacking median carina. Sternite IX (Fig. 15 I) nearly oval, with wellsclerotized apical half and membranous basal half. AeL 0.71 mm; aedeagus (Figs 15 J–L) with greatly asymmetric median lobe, left half of median lobe greatly protruding apicad in dorso-ventral view; endophallus composed of two elongate sclerites. Female. Similar to male in general appearance; scapes not expanded at basolateral margins; each eye composed of about 33 facets; profemora each with two ventral spines near base, mesotrochanters lacking ventral spine. BL 3.18–3.32 mm, HL 0.66–0.69 mm, HW 0.63–0.67 mm, PL 0.68–0.72 mm, PW 0.67–0.68 mm, EL 0.86–0.88 mm, EW 1.30–1.36, AL 0.98–1.03 mm, AW 1.32–1.42 mm. Genital complex (Fig. 48 E) with membranous apical part, and more strongly sclerotized basal part. Differential diagnosis. This species is placed in the H. centralis group. Males are externally similar to those of H. confragosa and H. tianmuensis as discussed above. Horniella sichuanica can be efficiently separated by the aedeagal median lobe having the left half being greatly protruding, while H. confragosa and H. tianmuensis have an opposite position of this character state. Distribution. Southwest China: Sichuan (Map 1). Collection notes. Adults of this species were collected from a leaf litter sample in a mixed forest by sifting. Etymology. The specific name is taken from ‘Sichuan Province’, where the type locality lies.Published as part of Yin, Zi-Wei & Li, Li-Zhen, 2014, Revision of the Oriental genus Horniella Raffray (Coleoptera, Staphylinidae, Pselaphinae), pp. 1-83 in Zootaxa 3850 (1) on page 28, DOI: 10.11646/zootaxa.3850.1.1, http://zenodo.org/record/28686
Choroidal Abnormalities in Neurofibromatosis Type 1
No full textEducational case presentation highlighting the ophthalmic manifestations of Neurofibromatosis Type 1 (NF1). The case illustrates key diagnostic criteria including Lisch nodules and choroidal abnormalities with the latter now recognized as a formal diagnostic criterion due to prevalence in pediatric patients over other manifestations like Lisch nodules. Choroidal abnormalities are now more easily detected via near-infrared optical coherence tomography. Comprehensive clinical findings, multimodal imaging (including slit-lamp and Fundus), and the revised NF1 diagnostic criteria are discussed. The presentation also reviews the pathophysiology and clinical relevance of optic pathway gliomas, eyelid and orbital plexiform neurofibromas, and their potential association with glaucoma. This submission is designed to educate ophthalmologists, neurologists, and trainees on the ocular manifestations of NF1 with emphasis on early detection, diagnostic imaging, and the role of ocular findings in a systemic diagnosisAlkatan, H. M., Bakry, S. S., & Alabduljabbar, M. A. (2019). Ocular findings in neurofibromatosis. In IntechOpen eBooks. https://doi.org/10.5772/intechopen.90021. Cimino, P. J., & Gutmann, D. H. (2018). Neurofibromatosis type 1. Handbook of Clinical Neurology, 799-811. https://doi.org/10.1016/b978-0-444-64076-5.00051-x. Kinori, M., Hodgson, N., & Zeid, J. L. (2017b). Ophthalmic manifestations in neurofibromatosis type 1. Survey of Ophthalmology, 63(4), 518-533. https://doi.org/10.1016/j.survophthal.2017.10.007. Legius, E., Messiaen, L., Wolkenstein, P., Pancza, P., Avery, R. A., Berman, Y., Blakeley, J., Babovic-Vuksanovic, D., Cunha, K. S., Ferner, R., Fisher, M. J., Friedman, J. M., Gutmann, D. H., Kehrer-Sawatzki, H., Korf, B. R., Mautner, V., Peltonen, S., Rauen, K. A., Riccardi, V., . . . Plotkin, S. R. (2021). Revised diagnostic criteria for neurofibromatosis type 1 and Legius syndrome: an international consensus recommendation. Genetics in Medicine, 23(8), 1506-1513. https://doi.org/10.1038/s41436-021-01170-5.Ragge, N. K., Falk, R. E., Cohen, W. E., & Murphree, A. L. (1993). Images of Lisch nodules across the spectrum. Eye, 7(1), 95-101. https://doi.org/10.1038/eye.1993.20. Stemmer-Rachamimov, A. O., Kozanno, L., Plotkin, S. R., Jordan, J. T., & Rizzo, J. F. 3. (2024). Histologic correlates of "Choroidal abnormalities" in Neurofibromatosis type 1 (NF1). Acta Neuropathologica, 147(1). https://doi.org/10.1007/s00401-024-02724-y. Vagge, A., Camicione, P., Capris, C., Sburlati, C., Panarello, S., Calevo, M. G., Traverso, C. E., & Capris, P. (2015). Choroidal abnormalities in neurofibromatosis type 1 detected by near-infrared reflectance imaging in paediatric population. Acta Ophthalmologica, 93(8). https://doi.org/10.1111/aos.1275
AMPA/kainate receptor-triggered Zn2+ entry into cortical neurons induces mitochondrial Zn2+ uptake and persistent mitochondrial dysfunction.
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