177,784 research outputs found
Effects of cadmium and zinc on oxygen consumption, ammonium excretion, and osmoregulation of white shrimp (Litopenaeus vannamei)
No full textPopulation genetic variation of cultured oyster Crassostrea spp. in Taiwan and neighborhood
No full textPopulation genetic variation of cultured oyster Crassostrea spp. in Taiwan and neighborhood
Cheng-Pin Yu
\uef\ubcAdvisor\uef\ubcDr. Jin-Hua Cheng\uef\ubc
Institute of Marine Biology, National Sun Yat-sen University, Kaohsuang 804 Taiwan R.O.C.
Thesis Abstract
The genetic variations among oyster populations of Taiwan, Ginmen and Fu-kein coast are analyzed using molecular method. Firstly, DNA sequences of mitochondrial 16S rRNA and COI genes are analyzed according to nucleotide differences and restriction enzyme recognition site. Then, population variations were analyzed by the lane pattern of restriction enzyme fragment\uef\ubcRFLP\uef\ubc.
The sequences of 530 bp DNA fragment of 16S rRNA gene showed little difference\uef\ubc0-1 bp\uef\ubcbetween Portuguese oyster and oyster cultured in Taiwan, both have larger differences\uef\ubc3-4 bp\uef\ubccompared with C. gigas. The sequences of 700 bp DNA fragment of COI gene showed similar results. C. angulata is found in Ginmen and Fu-kein coast for the first time which is identified by the PCR-RFLP of COI gene fragment. PCR-RFLP analysis of COI gene fragment showed C. angulata from Portugal are genetically closest to the oysters collected from Ginmen and Fu-kein
Metallothionein induction and heavy metal accumulation in white shrimp Litopenaeus vannamei exposed to cadmium and zinc
No full textThyrocarpus fujianensis (Boraginaceae; Cynoglosseae), a new species from China: evidence from morphological and molecular analyses
No full textMa, Liang, Chen, Xin-Yan, Chen, Yong-Bin, Zhou, Cheng-Yuan, Liu, Ming-Zhu, Chen, Shi-Pin (2023): Thyrocarpus fujianensis (Boraginaceae; Cynoglosseae), a new species from China: evidence from morphological and molecular analyses. Phytotaxa 600 (2): 105-112, DOI: 10.11646/phytotaxa.600.2.5, URL: http://dx.doi.org/10.11646/phytotaxa.600.2.
Phortica (Ashima) pavriarista Cheng & Chen 2008
No full text14) Phortica (Ashima) pavriarista Cheng & Chen, 2008 Phortica (Phortica) pavriarista Cheng & Chen in Cheng et al., 2008: 620. Phortica speculum (Maca & Lin, 1993): Chen et al., 2005b: 420 (part, misidentification). Phortica (Ashima) pavriarista: Chen & Máca, 2012: 507. Diagnosis. Arista only very slightly expanded apically (“Fig. 14” in Cheng et al. 2008); all postgonites strongly sclerotized, apically more or less pointed; posterior postgonite on only one lateral lobe of aedeagal sheath; lateral lobes submedially separated from each other; one lateral lobe of aedeagal sheath with 2 relatively close anterior postgonites (“Fig. 17” in Cheng et al. 2008). Supplementary description (not repeating characters common to P. foliiseta). Supracervical setae 12–14. Dorsomedial, tentorial apodeme 1/2 as long as basal, parallel portion of dorsolateral, tentorial apodeme. Longest, dorsal branch of arista shorter than longest seta on pedicel. Cibarial, medial sensilla 9–10 per side; posterior sensilla 4–6 per side. All tarsi with gray tarsomere V. The antisymmetry is observed in the postgonites: in A-type, the left lateral lobe bears 2 anterior postgonites, and the right lobe 1 posterior and 1 anterior postgonites (“Fig. 17” in Cheng et al. 2008); but in B-type, vice versa. Specimen examined. Thailand: 1♂ (B-type), above Sangwal, Doi Suthep, Chiang Mai, 1,250 m a.s.l., 6.i.2008, H. Bänziger leg. (SEHU). Distribution. China (Yunnan), Thailand *. Remarks. This species resembles P. andreagigoni in having the less expanded apex of arista, but can be distinguished from it by the diagnostic characters.Published as part of Toda, Masanori J., Bänziger, Hans, Sati, Pradeep C., Fartyal, Rajendra S., Suwito, Awit & Katoh, Toru, 2020, Taxonomy and evolution of asymmetric male genitalia in the subgenus Ashima Chen (Diptera: Drosophilidae: Phortica Schiner), with descriptions of seven new species, pp. 1-54 in Zootaxa 4789 (1) on page 20, DOI: 10.11646/zootaxa.4789.1.1, http://zenodo.org/record/388461
Free-convection condensation on single horizontal pin-fin tubes
No full textPhDNew experimental data are reported for free-convection condensation of ethylene
glycol and R-113 on three-dimensional pin-fin tubes. Effects of pin geometry and tube
thermal conductivity (for copper, brass and bronze giving a mean range of 400, 120 and
80 W/m K over the range of temperature of interest) were investigated. All tests were
performed at near atmospheric pressure with downward flowing vapour at low velocity.
Heat-transfer enhancement was found to be approximately twice the corresponding
active surface area of the tubes, i.e. the surface area of the parts of the tube and pin
surface not covered by condensate retained by surface tension. For ethylene glycol, the
best performing pin-fin tube gave a heat-transfer enhancement of 5.8, about 24 %
higher than the ‘equivalent’ two-dimensional integral-fin tube (i.e. with the same finroot
diameter, longitudinal fin spacing and thickness and fin height). For R-113, the
best enhancement was 5.9, about 10 % higher than the equivalent integral-fin tube.
For both fluids tested, vapour-side, heat-transfer enhancement was found to increase
with decreasing circumferential pin spacing and increasing pin height. Circumferential
pin thickness had little effect on heat-transfer enhancement. Effects of tube thermal
conductivity were found to be more significant for ethylene glycol than R-113.
Retention angle measurements were made under static conditions (without
condensation) and were found to be larger than for equivalent integral-fin tubes. An
expression for condensate retention angle on pin-fin tubes was proposed and found to
agree with the measured retention angles to ±15%.
A semi-empirical model for condensation heat transfer on horizontal pin-fin tubes has
been developed which accounts for the combined effect of gravity and surface tension.
The model predicts the majority of available data to ±20 %
Phortica (Ashima) nudiarista Cheng & Chen 2008
No full text15) Phortica (Ashima) nudiarista Cheng & Chen, 2008 Phortica (Phortica) nudiarista Cheng & Chen in Cheng et al., 2008: 619. Phortica brachychaeta Chen & Toda in Chen et al., 2005b: 422 (part, misidentification). Phortica (Ashima) nudiarista: Chen & Máca, 2012: 507. Diagnosis. Arista apically with distinct, leaf-like expansion narrower than long and apically tapering and pointed but neither dorsal nor ventral branches (“ Fig. 8 ” in Cheng et al. 2008); one lateral lobe of aedeagal sheath with 2 anterior postgonites widely separated; the other lateral lobe with 1 posterior and 1 anterior postgonites (“Fig. 11” in Cheng et al. 2008). Supplementary description (not repeating characters common to P. pavriarista). Supracervical setae 9–11. Cibarial, medial sensilla approximately 9 per side; posterior sensilla approximately 5 per side. The antisymmetry is observed in the postgonites: in A-type, the left lateral lobe bears 2 anterior postgonites, and the right lobe 1 posterior and 1 anterior postgonites (“Fig. 11” in Cheng et al. 2008); but in B-type, vice versa. Specimens examined. China: 1♂ (B-type), Zhengxing, Jingdong, Yunnan, 24.vii.2009 (SEHU). Thailand: 1♂ (B-type), above Sangwal, Doi Suthep, Chiang Mai, 1,250 m a.s.l., 24.vii.2008, H. Bänziger leg. (SEHU); 1♂ (Atype), above Sangwal, Doi Suthep, Chiang Mai, 1,250 m a.s.l., 9.i.2008, H. Bänziger leg. (SEHU); 1♂ (B-type), path to Pha Lad, Doi Suthep, Chiang Mai, 5.x.2008, H. Bänziger leg. (SEHU); 1♂ (B-type), path to Bung La U O, Ban Thi Pho Ji, Umphang Distr., Tak, ~ 800 m, 22.i.2008, H. Bänziger leg. (SEHU). Malaysia: 1♂ (B-type), Ulu Gombak, Selangor, 9.xii.2013, M.J. Toda leg. (SEHU). India: 1♂ (B-type), Uttarakhand, Chamoli Distr., Simli (Narainbagar), 5.ix.2010, P.C. Sati leg. (SEHU). Distribution. China (Yunnan), Thailand *, Peninsular Malaysia *, India (Uttarakhand)*. Remarks. This species resembles P. pavriarista in the morphology of the aedeagal sheath and postgonites, but can be distinguished from it by the diagnostic characters.Published as part of Toda, Masanori J., Bänziger, Hans, Sati, Pradeep C., Fartyal, Rajendra S., Suwito, Awit & Katoh, Toru, 2020, Taxonomy and evolution of asymmetric male genitalia in the subgenus Ashima Chen (Diptera: Drosophilidae: Phortica Schiner), with descriptions of seven new species, pp. 1-54 in Zootaxa 4789 (1) on page 20, DOI: 10.11646/zootaxa.4789.1.1, http://zenodo.org/record/388461
ZONG-WEI ZHU, XIN-GUI LE, LU-FEI LI, SHI-PIN CHEN & BIN CHEN (2023) Sedum yangjifengensis (Crassulaceae), a new species from Jiangxi, China. Phytotaxa 607 (1): 105-113
No full textZong-Wei Zhu, Xin-Gui Le, Lu-Fei Li, Shi-Pin Chen (2023): ZONG-WEI ZHU, XIN-GUI LE, LU-FEI LI, SHI-PIN CHEN & BIN CHEN (2023) Sedum yangjifengensis (Crassulaceae), a new species from Jiangxi, China. Phytotaxa 607 (1): 105-113. Phytotaxa 607 (4): 261-261, DOI: https://doi.org/10.11646/phytotaxa.607.4.5, URL: http://dx.doi.org/10.11646/phytotaxa.607.4.
On-chip very low junction temperature GaN-based light emitting diodes by selectively ion implantation
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