625 research outputs found
Polypheretima mekongmontis Nguyen, Tran & Nguyen 2014
No full textPolypheretima mekongmontis Nguyen, Tran & Nguyen, 2014 Polypheretima mekongmontis Nguyen, Tran & Nguyen, 2014: 118, Fig. 6. Type locality. Vietnam (Kien Giang: Hon Dat). Type material. CTU (EW.028), Vietnam. Examined material. 1 C (CTU-EW.028.h01) and 10 C (CTU-EW.028.p02) Kien Giang Prov., Hon Dat District, Hon Me Mt. (10º06' 12.3N; 104º52' 43.5E), mango garden, 13/11/2010, coll. Nguyen Thanh Tung. Records from Vietnam. Kien Giang (Hon Dat, Hon Tre Isl.) (Nguyen et al. 2014). Distribution. Only known from Vietnam. Vietnamese name. Trùn núi mêkông.Published as part of Nguyen, Tung T., Nguyen, Anh D., Tran, Binh T. T. & Blakemore, Robert J., 2016, A comprehensive checklist of earthworm species and subspecies from Vietnam (Annelida: Clitellata: Oligochaeta: Almidae, Eudrilidae, Glossoscolecidae, Lumbricidae, Megascolecidae, Moniligastridae, Ocnerodrilidae, Octochaetidae), pp. 1-92 in Zootaxa 4140 (1) on page 74, DOI: 10.11646/zootaxa.4140.1.1, http://zenodo.org/record/25650
FIGURE 3 in Aristolochia thotteaeformis, a distinct new species from southern Vietnam
No full textFIGURE 3. Morphological comparison of Aristolochia thotteaeformis T.V.Do & Luu sp.nov. (A-C) with A. philippinensis (D-F). A, D. Erect shrub and leaf shape; B, E. Cymose inflorescence on young branches and shape of internodes and nodes; C, F. Close up of lateral view of opened flowers. A-C photographed by Hong Truong Luu; D-F photographs by Scott Zona.Published as part of Luu, Hong Truong, Nguyen, Tran Quoc Trung, Nguyen, Quoc Dat, Nguyen, Thanh Trung, Nguyen, Thanh Trung & Do, Truong Van, 2022, Aristolochia thotteaeformis, a distinct new species from southern Vietnam, pp. 167-176 in Phytotaxa 547 (2) on page 172, DOI: 10.11646/phytotaxa.547.2.4, http://zenodo.org/record/657144
FIGURE 2. Aristolochia thotteaeformis T.V in Aristolochia thotteaeformis, a distinct new species from southern Vietnam
No full textFIGURE 2. Aristolochia thotteaeformis T.V.Do & Luu sp.nov. A. Erect shrub; B. Zig-zag young branches; C. Adaxial leaf surface; D. Pubescent young branches with short internodes and swollen nodes (indicated by white arrows); E. Cymose inflorescence bearing flowers with a distinct stipe (indicated by a white arrow); F. Frontal view of opened flower; G. Lateral view of opened flower; H. Longitudinal section showing inner surface of perianth; I. Close up of a 1-lipped limb and mouth; J. Close up of a 6-lobed gynostemium; K. Top view of a 6-lobed gynostemium; L. Shape of capsule; M. Abaxial surface of seed showing densely circular warts. Photographs by Hong Truong Luu, Tran Quoc Trung Nguyen, Quoc Dat Nguyen, Thanh Trung Nguyen; designed by Truong Van Do.Published as part of Luu, Hong Truong, Nguyen, Tran Quoc Trung, Nguyen, Quoc Dat, Nguyen, Thanh Trung, Nguyen, Thanh Trung & Do, Truong Van, 2022, Aristolochia thotteaeformis, a distinct new species from southern Vietnam, pp. 167-176 in Phytotaxa 547 (2) on page 171, DOI: 10.11646/phytotaxa.547.2.4, http://zenodo.org/record/657144
Preliminary optimization of extraction process for Citrus sinensis Osbeck L. peel essential oil and quality evaluation
No full text6 p.The present study performed optimization of the essential oil extraction from Citrus sinensis Osbeck L. peel. The conditions of grinding time of 1 min, extraction time of 150 min, and a water-to-material ratio of 1:3 (w/v) on frozen matter yielded 4.20 (%, g/100 g fresh matter) of extract in semi-pilot scaleby hydrodistillation method. C. sinensis peel EO was subjected to sensory evaluation, heavy metal contents, physical properties including density, pole rotation angles, and refractive index. D-limonene was identified in the synthesized peel extract with the highest content of 98.12 %. This process may have great potential as an alternative as it allows the recovery of C. sinensis by-products and production of high quality essential oils
FIGURE 1. Aristolochia thotteaeformis T.V in Aristolochia thotteaeformis, a distinct new species from southern Vietnam
No full textFIGURE 1. Aristolochia thotteaeformis T.V.Do & Luu sp.nov. A. Young branches; B. Cymose inflorescence in axillary and perianth straight in pre-anthesis; C. Lateral view of opened flower showing a distinct stipe (indicated by an arrow); D. Longitudinal section showing inner surface of perianth; E. Frontal view of opened flower; F. Close up of a 6-lobed gynostemium; G. Shape of capsule; H. Abaxial surface of seed showing densely circular warts. Drawn by Quyet Huu Nguyen & Truong Van Do.Published as part of Luu, Hong Truong, Nguyen, Tran Quoc Trung, Nguyen, Quoc Dat, Nguyen, Thanh Trung, Nguyen, Thanh Trung & Do, Truong Van, 2022, Aristolochia thotteaeformis, a distinct new species from southern Vietnam, pp. 167-176 in Phytotaxa 547 (2) on page 170, DOI: 10.11646/phytotaxa.547.2.4, http://zenodo.org/record/657144
Aristolochia (Aristolochia) (sect. Diplolobus) (subsect. Podanthemum) Klotzsch 1859
No full textKey to the species of Aristolochia subgenus Aristolochia section Diplolobus subsection Podanthemum in Vietnam 1. Shrubs erect; young branches zig-zag...................................................................................................................... A. thotteaeformis - Lianas or twiners; young branches straight........................................................................................................................................2 2. Leaf blade polymorphic; margin deeply or shallowly 3-lobed............................................................................................ A. pothieri - Leaf blade uniform; margin entire......................................................................................................................................................3 3. Leaf venation loosely reticulate; inflorescences condensely many-flowered; bracteoles minute; seeds winged.......... A. acuminata - Leaf venation closely foveolate-reticulate; inflorescences loosely 3–5-flowered; bracteoles ovate; seeds non-winged....................................................................................................................................................................................................... A. impressinervisPublished as part of Luu, Hong Truong, Nguyen, Tran Quoc Trung, Nguyen, Quoc Dat, Nguyen, Thanh Trung, Nguyen, Thanh Trung & Do, Truong Van, 2022, Aristolochia thotteaeformis, a distinct new species from southern Vietnam, pp. 167-176 in Phytotaxa 547 (2) on page 173, DOI: 10.11646/phytotaxa.547.2.4, http://zenodo.org/record/657144
Phaius Duongae (Orchidaceae, Collabieae), A New Cauline Species From Southern Vietnam
No full textNguyen, Thi Lien Thuong, Averyanov, Leonid V., Maisak, Tatiana V., Nguyen, Van Canh, Nguyen, Van Khuong, Pham, Thi Thanh Dat, Nguyen, Danh Duc, Truong, Ba Vuong (2023): Phaius Duongae (Orchidaceae, Collabieae), A New Cauline Species From Southern Vietnam. Phytotaxa 606 (1): 73-78, DOI: 10.11646/phytotaxa.606.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.606.1.
Method development for the determination of molecular hydrogen from new pharmaceutical formulations.
No full textAbstract.
Hydrogen has been embarking in the medical field as a novel therapeutic gas with outstanding antioxidation properties in recent years. This brings on a need for a reliable method of quantifying this molecule that is both affordable and available in most research institutes. Some researchers have been using gas chromatography to measure hydrogen and were able to separate hydrogen from other gases. In this paper, the goal is to study the impact of different parameters and setups of gas chromatography and develop an optimized method to accurately quantify hydrogen in a gas mixture. This study uses hydrogen in air mixture of various concentrations and measures it by a GC-TCD system using N2 as carrier gas. Through experimenting with changing temperature, loops volume, split ratio, etc., we want to see how the system reacts to these alterations. The final optimized parameters can be found in the conclusion of this research. It was later used to determine the LOD/LOQ, precision and accuracy of the method and a calibration curve was created (Figure 13). This data serves as the basis for an investigation of a new hydrogen-releasing medication developed by our university and could be a guideline for researchers who work with hydrogen.
Author: Nguyen Thanh Dat.
Supervisor: Dr. Bak István.egységes, osztatlangyógyszerészango
Polypheretima mekongmontis Nguyen, Tran & Nguyen 2014
No full text<i>Polypheretima mekongmontis</i> Nguyen, Tran & Nguyen, 2014 <p> <i>Polypheretima mekongmontis</i> Nguyen, Tran & Nguyen, 2014: 118, Fig. 6.</p> <p> <b>Type locality.</b> Vietnam (Kien Giang: Hon Dat).</p> <p> <b>Type material.</b> CTU (EW.028), Vietnam.</p> <p> <b>Examined material.</b> 1 C (<b>CTU-EW.028.h01</b>) and 10 C (<b>CTU-EW.028.p02</b>) Kien Giang Prov., Hon Dat District, Hon Me Mt. (10º06' 12.3N; 104º52' 43.5E), mango garden, 13/11/2010, coll. Nguyen Thanh Tung.</p> <p> <b>Records from Vietnam. Kien Giang</b> (Hon Dat, Hon Tre Isl.) (Nguyen <i>et al.</i> 2014).</p> <p> <b>Distribution.</b> Only known from Vietnam.</p> <p> <b>Vietnamese name.</b> Trùn núi mêkông.</p>Published as part of <i>Nguyen, Tung T., Nguyen, Anh D., Tran, Binh T. T. & Blakemore, Robert J., 2016, A comprehensive checklist of earthworm species and subspecies from Vietnam (Annelida: Clitellata: Oligochaeta: Almidae, Eudrilidae, Glossoscolecidae, Lumbricidae, Megascolecidae, Moniligastridae, Ocnerodrilidae, Octochaetidae), pp. 1-92 in Zootaxa 4140 (1)</i> on page 74, DOI: 10.11646/zootaxa.4140.1.1, <a href="http://zenodo.org/record/256507">http://zenodo.org/record/256507</a>
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