36,538 research outputs found
Okinawepipona yty , Nguyen 2018
No full text<i>Okinawepipona yty</i> Nguyen, 2018 <p>Figs. 1–7</p> <p> <i>Okinawepipona yty</i> Nguyen, 2018: 592, 596 (key), female – “Y Ty, Bat Xat, Lao Cai ” (IEBR).</p> <p> The male specimens we examined are from the type locality and agree well with the description by Nguyen <i>et al</i>. (2018). As described below, the male is similar to the female both in structure and coloration except for some few characters.</p> <p> <b>Material examined.</b> VIETNAM: <b>Lao Cai:</b> 12 ♀, 16 ♁, Y Ty, Bat Xat, 22°36′29.5″N 103°37′29.6″E, alt. 1869 m, 6 May 2019, Nguyen Quang Cuong leg.; 3 ♁, Y Ty, Bat Xat, 22°37′14.5″N 103°37′25.5″E, alt. 1850 m, 15 July 2023, Nguyen Thi Phuong Lien, Nguyen Quang Cuong leg. [IEBR]</p> <p> <b>Description.</b> <i>Male</i> (Fig. 4) [female characters in square brackets]. Body length 11–12 mm; forewing length 11–12 mm. Head in frontal view subcircular, wider than high, about 1.2× as wide as high [1.1× as wide as high] (Fig. 1). Vertex without cephalic foveae [with cephalic foveae small, bearing dense pubescence, situated very close to each other, almost touching each other] (Fig. 2). Distance from posterior ocellus to apical margin of vertex nearly 1.6× distance from posterior ocellus to inner compound eye margin [more than 1.7× distance from posterior ocellus to inner compound eye margin] (Fig. 2). Gena slightly narrower than compound eye, in lateral view about 0.9× as wide as compound eye [much narrower than compound eye, in lateral view about 0.7× as wide as compound eye]. Occipital carina complete, present along entire length of gena, but dorsally somewhat weak. Inner compound eye margins strongly converging ventrally; in frontal view about 1.8× further apart from each other at vertex than at clypeus [1.3× further apart from each other at vertex than at clypeus]. Disc of clypeus in lateral view weakly convex at basal half, then straight to near apical margin; in frontal view 1.3× higher than wide [about as wide as high] (Fig. 1), with basal margin almost straight [slightly convex medially] and distinctly separated from antennal sockets; apical margin deeply emarginate medially, forming very sharp tooth on each lateral side [forming sharp tooth on each lateral side] (Fig. 1), without carina [with two faint carinae running from tooth at apical point to base direction]; width of emargination slightly greater than 1/3 width of clypeus between inner compound eye margins [width of emargination slightly less than 1/3 width of clypeus between inner compound eye margins]. Mandible with prominent teeth, second and third teeth with inner side almost straight [second and third teeth with inner side produced with round margin], fourth tooth pointed apically. Antennal scape about 3.3× as long as its maximum width [about 3.7× as long as its maximum width]; flagellomere I about 1.8× as long as wide [about 1.5× as long as wide], flagellomeres II and III slightly longer than wide [flagellomere III as wide as long], flagellomere IV as wide as long, flagellomeres V–IX wider than long, terminal flagellomere small, slightly curved, 3.5× as long as its basal width, reaching to near base of flagellomere IX when folded [terminal flagellomere bullet-shaped, as long as its basal width] (Fig. 3).</p> <p>Mesosoma, metasoma (except tergum VII and sternum VII), and body sculpture as same as in female except clypeus with dense, small, deep punctures [clypeus with dense, large, flat-bottomed punctures, each bearing silver bristle, punctures at center larger than at sides, space between punctures larger than puncture diameter]. Tergum VII and sternum VII with some small and sparse punctures come between minute punctures.</p> <p> <i>Color</i>. Black; similar to female except clypeus almost entirely yellow [large spots on upper lateral corner and a large spot on lower middle of clypeus]; head black [narrow band along inner compound eye margin extending from bottom of frons nearly to ocular sinus, large spot between antennal sockets].</p> <p> <i>Genitalia</i>. As in Figs. 5–7. Parameral spine lacking setae. Volsella flattened, spatulate, wide on inner aspect, and without setae at top (Fig. 5). Digitus knife-shaped, almost parallel at one-third from base, then gradually narrowing to top, with medium long setae on outer margin (Fig. 5). Penis valves of aedeagus long, about 1.6× as long as basal apodeme, in ventral view proximal part produced laterally into a round lobe laterally with blunt apex in inner margin apically (Fig. 6); in profile apical part produced into a round projection (Fig. 7); dorsal rod of aedeagus shorter than basal apodeme apically (Fig. 7).</p> <p> <b>Distribution.</b> Vietnam (Lao Cai).</p>Published as part of <i>Nguyen, Hieu Van, Nguyen, Manh Thanh & Nguyen, Lien Thi Phuong, 2024, Discovery of the male of Okinawepipona yty Nguyen, 2018 (Hymenoptera: Vespidae: Eumeninae) from Vietnam, pp. 79-84 in Zootaxa 5399 (1)</i> on page 80, DOI: 10.11646/zootaxa.5399.1.6, <a href="http://zenodo.org/record/10494478">http://zenodo.org/record/10494478</a>
Beth Nguyen: 47th Annual ODU Literary Festival
No full textBeth Nguyen is the author of the recent memoir Owner of a Lonely Heart, which was a New York Times Editors’ Choice Pick, as well as the memoir Stealing Buddha’s Dinner, and two novels. She has received an American Book Award and a PEN/Jerard Award and her work has appeared in publications including The New Yorker, The Paris Review, Time, and Best American Essays. She teaches at the University of Wisconsin–Madison, where she also directs the MFA Program in Creative Writing
CONTEXT AND COMMON SENSE IN CONVERSATIONAL ARGUMENTS IN SOME WORKS BY NGUYEN NGOC THUAN
No full textThe article aims to explore the role of context and common sense in the dialogical reasoning of characters in some works by Nguyen Ngoc Thuan. Specifically, it has cataloged the dialogues in the stories, categorized the contexts and common sense, and counted their frequencies. From these results, we commented on the influence of contextual factors and common sense in shaping the dialogical style in Nguyen Ngoc Thuan’s creations. Additionally, the article highlights Nguyen Ngoc Thuan’s character portrayal through the perspective of dialogical reasoning. Thus, besides understanding argumentative structures, analyzing context and common sense in dialogical reasoning is a direction and a different perspective when approaching literary works
Irregular Convolution and Unity-Rate Coded Network-Coding for Cooperative Multi-User Communications
No full textNear-Capacity Multi-user Network-coding (NCMN) based systems operating in multiple modes and relying on an amalgamated Irregular Convolutional Code, a Unity-Rate Code and M-ary Phase-Shift Keying are proposed. We consider a multiuser network in which the users cooperatively transmit their independent information to a common base station (BS). Extrinsic Information Transfer (EXIT) charts were used for designing the proposed NCMN scheme for the sake of approaching the Discrete-input Continuous-output Memoryless Channel’s (DCMC) capacity. The NCMN systems are capable of simultaneously exploiting the advantages of all the new modes we designed for our system and those of the conventional mode. The design principles presented in this contribution can be extended to a vast range of NCMN based systems using arbitrary channel coding schemes
Okinawepipona yty Nguyen & Nguyen & Bozdoğan 2018, sp. nov.
No full textOkinawepipona yty Nguyen, sp. nov. (Figs 1–8) Material examined. Holotype, ♀, pinned (deposited in IEBR), VIETNAM, Y Ty, Bat Xat, Lao Cai (22°37'13.8''N, 103°37'24.7''E), alt. 1850 m, 14.viii.2017, L.T.P. Nguyen, C.Q. Nguyen & Q.H. Bui. Paratypes: VIETNAM: 6 ♀, same data as holotype (3 deposited in IEBR, 3 deposited in VNMN (VNMN.0104–0106)). Diagnosis. This species can be distinguished from other species of genus Okinawepipona by the following combination of characters: propodeum with posterior surface dull, rugose, with oblique striae along the median carina; T 1 in lateral view strongly convex anteriorly and clearly concave dorsally; metasoma black except a narrow orange band at the apical margins of metasomal tergum I and II (incised in the middle); and clypeus with three yellow spots, two at lateral basal margin and the other at the lower middle, near the apical margin. Description. Female. Body length 11–12 mm (holotype: 11.8 mm); fore wing length 11–12 mm (holotype: 11.7 mm). Head in frontal view subcircular, wider than high, about 1.1× as wide as high (Fig.1). Vertex with cephalic foveae small, bearing dense pubescence, situated very close to each other, almost touching to each other; depression for cephalic foveae conspicuous (Fig. 2). Distance from posterior ocelli to apical margin of vertex more than 1.7× distance from posterior ocelli to inner eye margin (Fig. 2). Gena much narrower than eye, in lateral view about 0.7× as wide as eye. Occipital carina complete, present along entire length of gena, but dorsally somewhat weak. Inner eye margins strongly convergent ventrally; in frontal view about 1.3× further apart from each other at vertex than at clypeus. Disc of clypeus in lateral view weakly convex at basal half, then straight to near apical margin; in frontal view about as wide as high (Fig. 1), with basal margin slightly convex medially and distinctly separated from antennal sockets; apical margin deeply emarginate medially, forming sharp tooth on each lateral side (Fig. 1), with two faint carina running from the tooth at apical point to the base direction; width of emargination slightly less than 1/3 width of clypeus between inner eye margins. Mandible with prominent teeth, second and third teeth with inner side produced with round margin, fourth tooth pointed apically. Antennal scape about 3.7× as long as its maximum width; flagellomere I about 1.5× as long as wide, flagellomere II slightly longer than wide, III-IV as wide as long, V–IX wider than long, terminal flagellomere bullet-shaped, as long as its basal width (Fig. 3). Mesosoma longer than wide in dorsal view. Pronotal carina slightly raised, produced as humeral angles, reaching ventral corner of pronotum. Mesoscutum weakly convex, slightly longer than wide between tegulae; anterior margin broadly rounded. Disc of scutellum almost flat, in profile slightly higher than level of apical margin of mesoscutum (Fig. 5). Metanotum convex, sloping down to apical margin. Propodeum excavated medially, posterior surface dull, rugose, basal triangular area with basal fovea, at lower end of which median carina runs to apical margin, basal fovea greater than 1/3 of length of median carina, median carina developed for entire length of propodeum (Fig. 4); upper part of propodeum slightly produced; dorsal surface of propodeum strongly rugose; dorsal and posterior surfaces bordered by a blunt edge. Hind coxa with distinct carina, which is elevated to form triangular process. Metasomal tergum I narrower than tergum II, truncate at base (Fig. 6); anterior vertical surface of tergum I strongly convex, with sparse shallow punctures, clearly separated from posterior horizontal surface, but not by a carina; posterior horizontal surface of tergum I in lateral view clearly concave dorsaly (Fig. 7); tergum I laterally divided by sharp carina into upper and lower parts. Tergum I in dorsal view slightly greater than twice as wide as long; tergum II in dorsal view nearly as wide as long (Fig. 6); sternum II in lateral view gradually and slightly convex to apical margin (Fig. 7). Body covered with long silvery setae except metasoma covered with short silvery setae. Clypeus with dense, large, flat-bottomed punctures, each bearing silver bristle, punctures at center larger than at sides, space between punctures larger than puncture diameter. Mandible with several shallow small punctures. Frons densely covered with coarse punctures, interspaces between punctures slightly raised to form reticulation. Vertex and gena with coarse punctures. Pronotum with punctures slightly coarser than those on frons, spaces between punctures narrow, strongly raised to form reticulation. Mesocutum densely and coarsely covered with flat-bottomed punctures, punctures near apical margin with interspaces showing tendency to run into irregular longitudinal striae. Punctures on scutellum similar to those near apical margin of mesoscutum. Punctures on metanotum denser and smaller than those on scutellum. Mesepisternum with deep and large punctures posterodorsally, shallow and small punctures anteroventrally; border between posterodorsal and anteroventral parts indistinct. Metapleuron almost smooth in dorsal area, with sparse shallow punctures in ventral area. Propodeum with punctures on dorsal surface very coarse, spaces between punctures strongly raised to form reticulation, lateral faces with weak striae, posterior surface dull, rugose and with some weak and short oblique striae along median carina. Metasomal terga I–II densely covered with punctures, punctures on tergum I coarser and denser than those on tergum II, punctures on terga III–V much smaller and weaker than those on terga I–II; tergum VI with minute punctures; punctures on sternum II stronger and larger than those on sternum III–V, sternum VI with minute punctures. Color. Black; following parts yellow: large spots on upper lateral corner and a large spot on lower middle of clypeus; narrow band along inner eye margin extending from bottom of frons nearly to ocular sinus, large spot between antennal sockets, mandible except margins, antennal scape beneath; following parts orange: thick band along pronotal carina in dorsal part of pronotum, narrow band at apical margin of terga I-II (incised in the middle, and narrowed toward lateral side of tergum I), a small spot at the apical corners of sternum II. Legs black except stripes on outer surfaces of fore femur yellow. Propodeal valvulae dark brown. Wings dark brown, slightly infuscate, veins dark brown. Male. Unknown. Distribution. Vietnam (Lao Cai). Etymology. The specific name refers to the type locality, Y Ty, Lao Cai province of Vietnam; it is to be treated as a noun in apposition. Biology. The species made its nest inside a hole of a woody stick (Fig. 8), which was used to make a house for drying medicine plants in the forest. The same character was observed in Okinawepipona nigra Nguyen & Xu at Bat Dai Son natural reserve, Ha Giang province of Vietnam. This species made its nest inside a hole of a woody door. After completing the nest, O. nigra closed the hole with white material (Fig. 9).Published as part of Nguyen, Lien Thi Phuong, Nguyen, Ha Thi Thu & Bozdoğan, Hakan, 2018, Contribution to the genus Okinawepipona Yamane (Hymenoptera: Vespidae: Eumeninae) from Vietnam, with description of a new species, pp. 592-596 in Zootaxa 4462 (4) on pages 592-595, DOI: 10.11646/zootaxa.4462.4.10, http://zenodo.org/record/144179
Cloning and sequencing of the genes encoding coat protein (CP) in Potato virus Y from Thai Nguyen province
No full textPotato (Solanum tuberosum L.) is the most widely distributed crop in tropical and subtropical zones of the world. Among diseases potato viruses play major role in reducing the yield. PVX (Potato virus X), PVY (Potato virus Y), PLRV (Potato leaf roll virus), PVA (Potato virus A), PVM (Potato virus M), PVS (Potato virus S) are major viral diseases occurring in Vietnam. PVY (Potato virus Y) is the type member of the genus Potyvirus of the family Potyviridae. The virus has a long filamentous particle containing one single-stranded, positive sense RNA genome of approximately 9.7 kb. PVY is an important pathogen infecting potato, tobacco, tomato and other solanaceous plant species. Different potato PVY isolates occur that can be categorized in 5 groups: PVYO, PVYN, PVYNTN, PVYNWi and PVYC. In this paper we report cloning and sequencing of coat protein (CP) gene of PVY from Thai Nguyen potato. The CP gene of this isolate was found to be 801 nucleotides long, coding for 267 amino acids. Comparison amino acid of CP protein in potato from Thai Nguyen with ten sequences on NCBI showed that amino acid was 92.1-98.9% homology
Suggestions for improvement in Vietnam employment laws in the context of gender equality
No full text5 p.Improving gender equality in the workplace is an urgent task for Vietnam Communist Party and the Government. Despite the ratification of international conventions on labour, women rights, as well as amendment to relevant domestic laws, it appears that the provisions have not satisfied the requirements set forth to combat discrimination at work against women. Through this article, the author intends to propose some ideas to improve the laws on the protection of the current female workers’ rights based on the 2012 Labour Code (amended and supplemented in 2019), related laws and sub–law documents
Figure 1 from: Dong L-N, Nguyen KS, Shui Y-M, Nguyen HQ, Xu W, Nguyen XK (2021) Begonia catbensis (sect. Coelocentrum, Begoniaceae), a new species from northern Vietnam. PhytoKeys 179: 1-12. https://doi.org/10.3897/phytokeys.179.65812
No full textFigure 1 Begonia catbensisA plants growing on rocks in the wild B habit C apical shoot bearing stipules D young leaf, abaxial view E part of adaxial leaf surface showing bullae, setae and palmate veins F dendritic hairs on petiole and abaxial veins G portion of leaf showing reddish setae on bullae and along margin. Photos and layout by K.S. Nguyen & L.N. Dong
Figure 2 from: Dong L-N, Nguyen KS, Shui Y-M, Nguyen HQ, Xu W, Nguyen XK (2021) Begonia catbensis (sect. Coelocentrum, Begoniaceae), a new species from northern Vietnam. PhytoKeys 179: 1-12. https://doi.org/10.3897/phytokeys.179.65812
No full textFigure 2 Begonia catbensisA apical part of inflorescence showing peduncle, pedicel, bracts, bracteoles, staminate and pistillate flowers B staminate and pistillate flowers C staminate flower (upper) in front view D stamens E pistillate flower-top view F pistillate flower, lateral view G dissected styles and stigmas H fruits and their cross-cut. Photos and layout by K.S. Nguyen & L.N. Dong
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