10,403 research outputs found
The PL "violet shift" of cerium dioxide on silicon
No full textCeO2 thin film was fabricated by dual ion beam epitaxial technique. The phenomenon of PL violet shift at room temperature was observed, and the distance of shift was about 65 nm. After the analysis of crystal structure and valence in the compound were carried out by XRD and XPS technique, it was concluded that the PL shift was related with valence of cerium ion in the oxides. When the valence of cerium ion varied front tetravalence to trivalence, the PL peak position would move from blue region to violet region and the phenomenon of "violet shift" was observed
Polylopha cassiicola Liu & Kawabe 1993
No full textPolylopha cassiicola Liu & Kawabe, 1993 Figs. 2, 5, 6, 8 Polylopha cassiicola Liu & Kawabe, 1993: 404, figs. 1–15 (adult, wing venation, ď and Ψ genitalia, larva, pupa); Liu & Li, 2002: 27, color pl. 1, fig. 3, pl. 1, fig. 3, pl. 54, fig. 3, pl. 99, fig. 3 (adult, ď and Ψ genitalia); Brown et al., 2005: 511. Diagnosis. Sexual dimorphism is not pronounced. Wing expanse is 9–12 mm. The species has a bicolored forewing, with the basal 1 / 3 dark grayish brown and the apical 2 / 3 brownish (Fig. 2). The male genitalia are characterized by a long aedeagus, valva with a process on sacculus, and large vinculum (Figs. 5, 6). The female genitalia are characterized by a large rectangular sterigma, a sclerotized ductus bursae and a hornshaped signum with a round top (Fig. 8). The moth is distinguishable from its congeners by these characters. Material examined. China: Hong Kong, Victoria Peak (400 m), 2 ď, 1 Ψ, vii. 1991, K. Li leg., 1 ď, viii. 1991, K. Li leg., 1 Ψ, viii-ix. 1992, A. C. Galsworthy leg., 2 ď, v. 1993, A. C. Galsworthy leg., 1 ď, 2 Ψ, vi. 1993, A. C. Galsworthy leg., 2 Ψ, vii. 1993, K. Li leg.; New Territories, 1 ď, 2 Ψ, 24.ii. 2002, M. S. Sterling leg., 2 ď, 2002, M. S. Sterling leg. (all BMNH). Distribution. South China. Host plant. Lauraceae: Cinnamomum cassia Presl, C. camphora (L.) Presl, C. parthenoxylon (Jack) Meisn. (Liu & Kawabe, 1993). Biology. The adult moths are attracted to light. The larvae bore into the twigs of the host plant (Liu & Kawabe, 1993). Remarks. Liu & Kawabe (1993) and Liu & Li (2002) gave only simple line drawings of the adult and genitalia of the species. Therefore I augment those illustrations with photographs. Polylopha is distributed in the Oriental and Australian regions, and seven species have been recorded previously (Brown et al., 2005). The genus is associated with Annonaceae: P. e p i d e s m a Lower, 1901 (= porpacias Meyrick, 1908) feeds on Polyalthia longifolia (Wall.) Benth. et Hook. (Annonaceae) (Diakonoff, 1974; Robinson et al., 2001), P. hypophaea Diakonoff, 1974 on “kalak” [Miliusa horsfieldii Baill. ex Pierre] (Diakonoff, 1974), and Lauraceae: the present species on Cinnamomum spp. The genus is closely related to Lopharcha, and the distinguishing character is noted in the remarks for the preceding species.Published as part of Nasu, Yoshitsugu, 2006, Lopharcha moriutii, sp. nov. and Polylopha cassiicola Liu & Kawabe (Lepidoptera, Tortricidae, Chlidanotinae, Polyorthini) from Thailand and Hong Kong, pp. 55-61 in Zootaxa 1369 on pages 59-60, DOI: 10.5281/zenodo.17487
Tubulipora perforata Liu & Liu & Zágoršek 2019, n. sp.
No full textTubulipora perforata n. sp. (Figs 11–15) lsid:zoobank.org:act: 612DC68B-D2A8-4263-AFF7-9CCF73C62C38 v. Tubulipora pulchra: Liu, Yin & Ma, 2001: p. 383, pl. 5, figs 1–3. v. Tubulipora pulchra: Seo, 2005: p. 275, pls 7, 8. Diagnosis. Tubulipora with autozooid arranged in fascicles containing 2–10 autozooidal tubes, protoecium with smooth margin. Gonozooid slightly triangular, with oval ooeciopore adjacent to the proximal or near the proximal margin of the closest distal autozooidal tube. Basal lamina visible beyond the budding zone. Holotype. Specimen MBM 284359 from Jiaozhou Bay (Figs 11, 12). Paratypes. Specimens MBM 284369, MBM 284362, MBM 284490, MBM 284346 (Jiaozhou Bay). Additional material. More than 10 colonies from samples MBM 194708, MBM 194683, MBM 194656, MBM 194700, MBM 194710, MBM 194676 and MBM 194667 (Jiaozhou Bay). Etymology. Referring to the large pseudopores of the gonozooecium. Description. Colony encrusting, almost circular, sometimes lobate. Autozooids wide (approximately 100 µm), arranged in somewhat radial rows. Apertures rounded to square-shaped, often in fascicles of 2–10 during late astogeny. Peristomes long (ca. 160–220 µm), slightly curved and perforated by very small pseudopores (ca. 4 µm in diameter). Budding margin with 2–4 rows of partially developed zooids overlapping the margin, forming a characteristic edge, without the basal lamina limited to the margin of the colony, not extending further. Protoecium approximately 100–110 µm in diameter, often with smooth margins. Gonozooid slightly triangular, longer (1250–1660 µm) than wide (620–1100 µm), spreading over 2–5 autozooidal tubes and perforated by these tubes; pseudopores numerous, large (diameter approximately 12 µm). Ooeciopore elongated oval, centrally situated, approximately 100–120 µm wide by 40–50 µm long, adjacent to the proximal margin of the succeeding autozooid. Ooeciostome with distinctly extended lips developed around the ooeciopore. Remarks. The new species differs from other Tubulipora species in having autozooidal tubes in fascicles, combined with a very large, elongated, almost triangular gonozooid with elongated oval ooeciopore attached to the proximal margin of the succeeding autozooidal tube, non-serrate protoecium and basal lamina projecting beyond the budding zone. The new species differs from T. similis in having a subcircular, non-serrate protoecium and a somewhat upright ooeciostome (vertical to the colony surface) with slightly flared lips, while in T. similis the ooeciostome is slightly curved. Moreover, the new species has autozooecial apertures that are polygonal, arranged in fascicles and the ooeciopore is elongate oval, while in the T. similis the ooeciopore is circular. Tubulipora concinna is very similar to the new species. MacGillivray’s (1885a, p. 94, pl. 1, fig. 10) illustration shows the projecting basal lamina, autozooidal tubes in fascicles, extended gonozooid and oval ooeciopore. However, it differs in the more lateral position (relative to the following autozooid) of the ooeciopore, and in the gonozooid being wider than long. The original material of MacGillivray (1885a) is not accessible; therefore, the exact attribution of his species remains uncertain. Moreover, T. concinna was synonymised with Diastopora latomarginata d’Orbigny, 1853 by Waters (1889) and consequently also by Jelly (1889). Specimens of T. pulchra in Liu et al. (2001) and Seo (2005) show the same characters as the new species (i.e. large, almost triangular gonozooid with oval ooeciopore attached to the succeeding autozooidal tube). Therefore, we synonymised this material with our new species. Occurrence. Jiaozhou Bay in Qingdao and also Jeju Island in Korea (Seo 2005).Published as part of Liu, H., Liu, X. & Zágoršek, K., 2019, Cyclostome bryozoans from Qingdao, South Yellow Sea, China, pp. 473-500 in Zootaxa 4603 (3) on pages 478-480, DOI: 10.11646/zootaxa.4603.3.3, http://zenodo.org/record/270228
Idmidronea erecta Liu & Liu & Zágoršek 2019, n. sp.
No full textIdmidronea erecta n. sp. (Figs 22–25) lsid:zoobank.org:act: 190A0C00-38AB-43B1-B1D8-6060329257E3 Diagnosis. Idmidronea with gonozooid frontally situated between the fascicles, and straight ooeciostome arranged between regular autozooidal apertures. Holotype. Specimen MBM 284448 from Lingshan Island (Figs 22, 23). Paratype. Specimen MBM 284471 (Jiaozhou Bay) Additional material. Two colonies without gonozooecium from samples MBM 0 92370 (Lingshan Island) and MBM 0 92378 (Jiaozhou Bay). Etymology. Referring to the straight direction of the ooeciostome, not curved as commonly in other Idmidronea species. Description. Colony erect, robust, and dichotomously branched. Branches short and wide (length about 1000–1300 µm, width at the proximal end of the branch about 670–820 µm), with ca. 5–8 zooidal fascicles between successive bifurcations. Fascicles alternating, consist of 3–6 autozooidal apertures. Autozooidal tubes wide (ca. 138–153 µm); length of the frontal wall 380–456 µm, diameter of apertures ca. 100 µm. Gonozooid frontal, elongate (length about 1300 µm), spreading over three or four fascicles, frontal wall porous. Ooeciopore oval, slightly smaller than the autozooidal aperture (diameter approximately 70–80 µm), situated close to the bifurcation, proximally oriented, usually close to a regular autozooid. Dorsal side of the branch porous, almost flat and slightly convex. Kenozooids approximately 40 µm in diameter, developed on the proximal portion of the branch, spreading over the colony in the distal direction. Remarks. Idmidronea atlantica as described by Hayward & Ryland (1985) is similar to the new species in the position of the gonozooid, but differs in having much longer branches and the swan-neck-shaped ooeciostome. Idmidronea biporata Brood, 1976 also has a straight ooeciostome but differs in having very delicate colonies, much narrower branches, and fascicles consisting of only two autozooidal apertures. Many recent Idmidronea species have a similar arrangement of autozooidal tubes, and similar-sized branches and pseudopores, but lack a gonozooid to compare with the new species. For example, Idmonea contorta Busk, 1875 (p. 12, pl. 8) from South Africa shows similar arrangement of autozooidal tubes as does Idmonea australis MacGillivray, 1885b (p. 470, pl. 68, fig. 2). In addition to the presence of kenozooids, which may be a variable character that may (or may not) develop in basal branches during late astogeny, this species differs from Exidmonea intercalata n. sp. in having straight oriented ooeciostome, situated more or less in the central part of the gonozooid. Exidmonea intercalata n. sp. has downwardly curved, swan-neck shaped ooeciostome, situated in the margin of the gonozooid. Occurrence. Lingshan Island and Jiaozhou Bay.Published as part of Liu, H., Liu, X. & Zágoršek, K., 2019, Cyclostome bryozoans from Qingdao, South Yellow Sea, China, pp. 473-500 in Zootaxa 4603 (3) on pages 482-483, DOI: 10.11646/zootaxa.4603.3.3, http://zenodo.org/record/270228
Pinnularia molderii fm. spitsbergensis D. M. Williams, Bing Liu & Taxbock 2022, nom. nov.
No full textPinnularia molderii f. spitsbergensis D.M. Williams, Bing Liu & Taxböck nom. nov. ≡ Pinnularia hustedtii f. spitsbergensis Foged 1981: 148, pl. 42, fig. 8 (Foged 1964: 122, “ Pinnularia hustedtii forma”) Type:— Alaska, Spitzbergen, C 466/1963, holotype; ANSP GC 64404, isotype (Mahoney & Reimer 1997: 170).Published as part of Williams, David M., Liu, Bing & Taxböck, Lukas, 2022, Pinnularia hustedtii (Bacillariophyta): Notes on specimens from Wuling Mountains, China and from type material, pp. 294-300 in Phytotaxa 536 (3) on page 299, DOI: 10.11646/phytotaxa.536.3.10, http://zenodo.org/record/633185
Wood smoke extract induces oxidative stress-mediated caspase-independent apoptosis in human lung endothelial cells: role of AIF and EndoG
No full textProton Magnetic Resonance Spectroscopy in Normal Breasts between Pre- and Postmenopausal Women: A Preliminary Study.
No full textHighly oligomeric procyanidins from areca nut induce lymphocyte apoptosis via the depletion of intracellular thiols
No full textLaser Flash Photolysis Studies: 1, 2-Hydrogen Migration to a Carbene
No full textPT: J; CR: ALTMANN JA, 1974, J AM CHEM SOC, V96, P4196 ALTMANN JA, 1975, J AM CHEM SOC, V97, P5217 BODOR N, 1972, J AM CHEM SOC, V94, P9103 BONNEAU R, 1989, J AM CHEM SOC, V111, P5973 BURNETT SM, 1983, CHEM PHYS LETT, V100, P124 CELEBI S, 1993, J AM CHEM SOC, V115, P8613 DIX EJ, 1993, J AM CHEM SOC, V115, P10424 EVANSECK JD, 1990, J PHYS CHEM-US, V94, P5518 FRENKING G, 1984, TETRAHEDRON, V40, P2123 FREY HM, 1962, J CHEM SOC, P2293 FREY HM, 1965, J CHEM SOC, P1700 FREY HM, 1966, ADV PHOTOCHEM, V4, P225 FRIEDMAN L, 1959, J AM CHEM SOC, V81, P5512 GALLO MM, 1992, J PHYS CHEM-US, V96, P1515 HO GJ, 1989, J AM CHEM SOC, V111, P6875 HOFFMANN R, 1968, J AM CHEM SOC, V90, P1485 HOUK KN, 1984, J AM CHEM SOC, V106, P4291 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 HOUK KN, 1985, TETRAHEDRON, V41, P1555 JACKSON JE, 1988, J AM CHEM SOC, V110, P5595 JACKSON JE, 1989, J AM CHEM SOC, V111, P6874 JACKSON JE, 1994, ADV CARBENE CHEM, V1 JONES WM, 1980, REARRANGEMENTS GROUN, V1, P95 KHODABANDEH S, 1993, J PHYS CHEM-US, V97, P4360 KIRMSE W, 1965, ANGEW CHEM INT EDIT, V4, P692 KIRMSE W, 1971, CARBENE CHEM KRAMER KAW, 1962, TETRAHEDRON LETT, P1095 KYBA EP, 1977, J AM CHEM SOC, V99, P8330 LAVILLA JA, 1989, J AM CHEM SOC, V111, P6877 LAVILLA JA, 1990, TETRAHEDRON LETT, V31, P5109 LIU MTH, IN PRESS J PHOTOCHEM LIU MTH, 1985, J CHEM SOC CHEM COMM, P982 LIU MTH, 1986, J PHYS CHEM-US, V90, P75 LIU MTH, 1987, CHEM DIAZIRINES, V1, P111 LIU MTH, 1987, J ORG CHEM, V52, P4223 LIU MTH, 1989, J AM CHEM SOC, V111, P6873 LIU MTH, 1989, J PHYS CHEM-US, V93, P7298 LIU MTH, 1990, J AM CHEM SOC, V112, P3915 LIU MTH, 1990, J CHEM SOC CHEM COMM, P1650 LIU MTH, 1992, J AM CHEM SOC, V114, P3604 LIU MTH, 1992, J ORG CHEM, V57, P2483 LIU MTH, 1992, J PHYS ORG CHEM, V5, P285 LIU MTH, 1993, J PHYS ORG CHEM, V6, P696 LIU MTH, 1994, RES CHEM INTERMEDIAT, V20, P195 MA B, 1994, J AM CHEM SOC, V116, P3539 MANSOOR AM, 1966, TETRAHEDRON LETT, P1733 MODARELLI DA, 1991, J AM CHEM SOC, V113, P8985 MODARELLI DA, 1992, J AM CHEM SOC, V114, P7034 MODARELLI DA, 1993, J AM CHEM SOC, V115, P10440 MODARELLI DA, 1993, J AM CHEM SOC, V115, P470 MOSS RA, 1989, ACCOUNTS CHEM RES, V22, P15 MOSS RA, 1990, J AM CHEM SOC, V112, P1638 MOSS RA, 1990, J AM CHEM SOC, V112, P5642 MOSS RA, 1992, J PHYS ORG CHEM, V5, P104 MOSS RA, 1992, TETRAHEDRON LETT, V33, P4287 MOSS RA, 1993, J CHEM SOC CHEM COMM, P1597 MOSS RA, 1993, J PHYS CHEM-US, V97, P13413 MOSS RA, 1993, J PHYS ORG CHEM, V6, P126 MOSS RA, 1993, TETRAHEDRON LETT, V34, P927 MOSS RA, 1994, ADV CARBENE CHEM, V1 MULLERREMMERS PL, 1985, J AM CHEM SOC, V107, P7275 NICKON A, 1993, ACCOUNTS CHEM RES, V26, P84 NOBES RH, 1980, CHEM PHYS LETT, V74, P269 PLATZ MS, 1994, RES CHEM INTERMEDIAT, V20, P175 RAGHAVACHARI K, 1982, CHEM PHYS LETT, V85, P145 REGITZ M, 1989, METHOD ORGAN CHEM, E, B19 SCHAEFER HF, 1979, ACCOUNTS CHEM RES, V12, P288 SEBURG RA, 1992, J AM CHEM SOC, V114, P7183 SMALL RD, 1977, CHEM PHYS LETT, V50, P431 SMALL RD, 1977, J PHYS CHEM-US, V81, P828 SMALL RD, 1978, CHEM PHYS LETT, V59, P246 STEVENS IDR, 1989, TETRAHEDRON LETT, V30, P481 STORER JW, 1993, J AM CHEM SOC, V115, P10426 SU DTT, 1978, J AM CHEM SOC, V100, P1872 SUGIYAMA MH, 1992, J AM CHEM SOC, V114, P966 TOMIOKA H, 1980, J AM CHEM SOC, V102, P7817 TOMIOKA H, 1984, J AM CHEM SOC, V106, P454 TOMIOKA H, 1986, CHEM LETT, P695 TURRO NJ, 1982, J AM CHEM SOC, V104, P1754 WARNER PM, 1984, TETRAHEDRON LETT, V25, P4211 WHITE WR, 1992, J ORG CHEM, V57, P2841 WIERLACHER S, 1993, J AM CHEM SOC, V115, P8943; NR: 82; TC: 56; J9: ACCOUNT CHEM RES; PG: 8; GA: PL566Source type: Electronic(1
Exidmonea intercalata Liu & Liu & Zágoršek 2019, n. sp.
No full textExidmonea intercalata n. sp. (Figs 16–21) lsid:zoobank.org:act: E7C19B17-7B70-45A6-989B-DCC1004FD20D Diagnosis. Exidmonea with 2–6 autozooidal tubes in each fascicle, gonozooid situated at bifurcation, with ooeciopore located on its distalmost edge, downwardly curved, swan-neck shaped, hidden/immersed between bifurcating branches. Holotype. Specimen MBM 284444 from Lingshan Island (Figs 16–18). Paratypes. Specimens MBM 284469, MBM 284470, MBM 284472, MBM 284376 (Jiaozhou Bay) and MBM 284499 (Jiaozhou Bay). Additional material. More than 10 colonies from samples MBM 0 92370, MBM 194661 (Lingshan Island), MBM 0 92378 (Jiaozhou Bay) and MBM 0 91767 (Jiaozhou Bay) Etymology. Referring to the immersed/submerged ooeciostome in the zone of bifurcation. Description. Colony erect, dichotomously branched. Branches short (the distance between successive bifurcations approximately 880–1380 µm) and narrow (430–500 µm wide before bifurcation). Approximately 6–8 autozooidal fascicles between successive branch bifurcations. Fascicles alternating, each consisting of 2–6 autozooidal apertures. Distance between fascicles in the longitudinal direction ca. 210–300 µm. Apertures oval to rounded rectangular, diameter approximately 90–110 µm. Gonozooid triangular, small (ca. 410–460 µm wide by 500–520 µm long), situated frontally in the zone of bifurcation, spreading over two or three fascicles, with densely porous frontal wall (pseudopore diameter ca. 8–10 µm). Ooeciopore located on the distalmost edge of the gonozooid, hidden between bifurcating branches, narrower than autozooidal tubes (ca. 60 µm wide). Ooeciostome short, downwardly curved, swan-neck shaped, adjacent to a deformed autozooidal tube with elongated oval aperture. Dorsal side of the colony flat, with arcuate growth lines and pseudopores arranged parallel to them; kenozooids absent. Remarks. Idmonea pauper Canu & Bassler (1929, p. 545, pl. 84, figs 13, 14) is similar to the new species in the size and position of gonozooid, but differs in having ooeciopore adjacent to the first peristome of a fascicle. The downwardly curved, swan-neck shaped ooeciostome of the new species is similar to that of Idmidronea atlantica (Forbes in Johnston, 1847), as described by Hayward & Ryland (1985). However, I. atlantica differs mainly in having much denser fascicles and longer branches (more than 20 fascicles between successive bifurcation and the branch is more than 4 mm long). Moreover, I. atlantica develops a kenozooidal overgrowth on the dorsal side of the branches. Occurrence. Jiaozhou Bay and Lingshan Island.Published as part of Liu, H., Liu, X. & Zágoršek, K., 2019, Cyclostome bryozoans from Qingdao, South Yellow Sea, China, pp. 473-500 in Zootaxa 4603 (3) on pages 480-481, DOI: 10.11646/zootaxa.4603.3.3, http://zenodo.org/record/270228
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