135 results on '"Young FA"'
Search Results
2. Integration of Multiple Sensors for Beehive Health Status Monitoring and Assessment
- Author
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Ho, I-Chen, primary, Lai, Yen-Jen, additional, Chiang, Po-Neng, additional, Chen, Young-Fa, additional, and Lin, Ta-Te, additional
- Published
- 2022
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3. The Impact of Different Inhaled Corticosteroids, Bronchodilators and Azithromycin on Lung Microbiota in the Murine Model of Emphysema
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Chong-Jen Yu, Shih-Lung Cheng, Young-Fa Chen, Hsin-Han Hou, and Hsiao-Chun Wang
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Lung ,medicine.anatomical_structure ,business.industry ,Murine model ,Immunology ,medicine ,Inhaled corticosteroids ,business ,Azithromycin ,medicine.drug - Published
- 2019
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4. Modeling of riparian vegetated buffer strip width and placement: A case study in Shei Pa National Park, Taiwan
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Lin, Young-Fa, Lin, Chao-Yuan, Chou, Wen-Chieh, Lin, Wen-Tzu, Tsai, Jing-Shyan, and Wu, Cho-Fu
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- 2004
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5. DNA barcoding and morphological data reveal a new Hyposoter (Hymenoptera: Ichneumonidae: Porizontinae) reared from a rare zygaenid moth Artona flavipuncta Hampson, 1900 in Taiwan
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Yu Feng Hsu, Young Fa Chen, and Chia Lung Huang
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Insecta ,biology ,Arthropoda ,Biodiversity ,Zoology ,Morphology (biology) ,Hymenoptera ,biology.organism_classification ,DNA barcoding ,Ichneumonidae ,Parasitoid ,Botany ,Artona ,Animalia ,Animal Science and Zoology ,Taxonomy (biology) ,Ecology, Evolution, Behavior and Systematics ,Taxonomy - Abstract
A new species of Hyposoter Foerster, 1869 is discovered based on morphology of adults and cocoons, biology, and DNA barcoding evidence. It is herein described as Hyposoter distriangulum Chen, Huang & Hsu sp. nov. , which is a common parasitoid of a rare zygaenid moth Artona flavipuncta Hampson, 1900. The differences between similar Hyposoter species in Japan and Taiwan are also presented.
- Published
- 2017
6. DNA barcoding and morphological data reveal a new
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Young-Fa, Chen, Chia-Lung, Huang, and Yu-Feng, Hsu
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Japan ,Taiwan ,Animals ,DNA Barcoding, Taxonomic ,Moths ,Hymenoptera - Abstract
A new species of Hyposoter Foerster, 1869 is discovered based on morphology of adults and cocoons, biology, and DNA barcoding evidence. It is herein described as Hyposoter distriangulum Chen, HuangHsu sp. nov. , which is a common parasitoid of a rare zygaenid moth Artona flavipuncta Hampson, 1900. The differences between similar Hyposoter species in Japan and Taiwan are also presented.
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- 2017
7. New species ofDialeurodesCockerell (Hemiptera: Aleyrodidae) with diagnoses and keys to puparia and adults from Taiwan
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Anil Kumar Dubey, Chiun-Cheng Ko, and Young-Fa Chen
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Dorsum ,biology ,Insect Science ,Botany ,Key (lock) ,Dialeurodes swidi ,Taxonomy (biology) ,Whitefly ,biology.organism_classification ,Hemiptera ,Ecology, Evolution, Behavior and Systematics - Abstract
Adult and immature stages of a new whitefly species Dialeurodes swidi Ko are described and illustrated. It can be distinguished from other species by the abundant large tubercles scattered over its dorsum, each of them bearing a geminate pore. The biology, comparative notes and identification keys to puparia and adults of Dialeurodes species of Taiwan are provided.
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- 2010
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8. DNA barcoding and morphological data reveal a new Hyposoter (Hymenoptera: Ichneumonidae: Porizontinae) reared from a rare zygaenid moth Artona flavipuncta Hampson, 1900 in Taiwan
- Author
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CHEN, YOUNG-FA, primary, HUANG, CHIA-LUNG, additional, and HSU, YU-FENG, additional
- Published
- 2017
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9. Modeling of riparian vegetated buffer strip width and placement
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Wen-Tzu Lin, Cho-Fu Wu, Wen-Chieh Chou, Chao-Yuan Lin, Jing-Shyan Tsai, and Young-Fa Lin
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Hydrology ,Pollution ,geography ,Environmental Engineering ,geography.geographical_feature_category ,National park ,Attenuation ,media_common.quotation_subject ,Potassium ,chemistry.chemical_element ,Buffer strip ,Management, Monitoring, Policy and Law ,engineering.material ,Hydraulic conductivity ,chemistry ,engineering ,Environmental science ,Fertilizer ,Nature and Landscape Conservation ,Riparian zone ,media_common - Abstract
This study addressed the suitable width for riparian vegetated buffer strips (RVBS) using topographic analyses, attenuation curves, and an index model. The Chi Chia Wang Stream is susceptible to pollution because of highly saturated hydraulic conductivity and excessive fertilizer use in the nearby cultivated lands. The buffer strip widths calculated from a potassium attenuation curve in the vegetable plot were the widest due to easy potassium movement in the soil. A potassium safety soil depth of 8.81 m was calculated or estimated for the vegetable area. The buffer width derived from this safety depth is recommended for maximum agricultural nonpoint source pollution (ANSP) prevention.
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- 2004
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10. Pigtail drainage in the treatment of tuberculous pleural effusions: a randomised study
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Wang Yh, Young-Fa Lai, Lin As, and Chao Ty
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Adult ,Male ,Pulmonary and Respiratory Medicine ,Pigtail ,medicine.medical_specialty ,Vital capacity ,Adolescent ,Visual analogue scale ,Pleural effusion ,Vital Capacity ,Antitubercular Agents ,Pleural disease ,Risk Factors ,medicine ,Tuberculosis ,Humans ,Aged ,Postoperative Care ,business.industry ,Incidence (epidemiology) ,Tuberculosis, Pleural ,Middle Aged ,medicine.disease ,Surgery ,Pleural Effusion ,Regimen ,Treatment Outcome ,Effusion ,Drainage ,Female ,business - Abstract
Tuberculous pleurisy can result in obvious clinical symptoms, pleural fibrosis, and pleural thickening. Some studies of tuberculous pleurisy have suggested that symptomatic improvement and minimisation of sequelae can be achieved by completely draining the effusion during treatment, although the results have not been conclusive.Sixty one patients with tuberculous pleurisy were divided into two groups; 30 patients received pigtail drainage combined with antituberculosis (TB) drug treatment and 31 received only anti-TB drugs. Outcome measurements were assessed for a period of 24 weeks after treatment and included symptom scores and the incidence of residual pleural thickening (RPT).Although the duration of dyspnoea was significantly shortened by the use of pigtail drainage (median 4 days (IQR 4-5) v 8 days (IQR 7-16), p0.001), a comparison of combined mean (SD) visual analogue scale (VAS) scores showed no significant difference between the groups after one week of treatment (57.1 (33.2) v 68.5 (44.7) or at any time during the follow up period. The incidence of RPT of more than 10 mm in the group treated with pigtail drainage and anti-TB drugs was 26% compared with 28% in the group receiving drug treatment only. The incidence of RPT levels of more than 2 mm in the two groups was 50% and 51%, respectively. No statistical difference between the two groups in terms of forced vital capacity was found at the end of treatment (median (IQR) 85.5% (69-94) of predicted v 88% (78-96) of predicted).The addition of pigtail drainage to an effective anti-TB regimen is not clinically relevant and does not reduce the level of RPT.
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- 2003
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11. Rhagophthalmus giallolateralus Ho, sp. nov
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Ho, Jen-Zon, Chen, Young-Fa, Cheng, Su-Han, Tsai, Xi-Lian, and Yang, Ping-Shin
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Coleoptera ,Insecta ,Rhagophthalmus giallolateralus ,Arthropoda ,Animalia ,Rhagophthalmidae ,Rhagophthalmus ,Biodiversity ,Taxonomy - Abstract
Rhagophthalmus giallolateralus Ho sp. nov. (Fig. 4 B, 5 D, 5 E, 5 F, 6 C, 6 D, 7 C, 7 D, 8 C, 8 D, 9 A, 10 C, 10 D, 13) Type. Holotype, TAIWAN: Dongjyu, Lienchiang County, Taiwan, 1 male (bathed samples), 26 -IV- 2010, Jian-Hua Wang. (ESRI); Paratype: TAIWAN: Dongjyu, Lienchiang County, Taiwan, 2 males, 2 females, 23 -V- 2011, Hua-Te Fang. (ESRI). Holotype is deposited in ARI; four paratypes are deposited in NMNS and ESRI. Etymology. This species is named for its yellowish margin on the elytra. Giallo- means the color yellow and - lateralus means the lateral margin. Diagnosis. The enlarged flagellar segments 4���9 are similar to R. flavus which occurs in Malaysia and Thailand, but in R. flavus a lens-like sensillum adheres to each enlarged segment (Kawashima and Sat��, 2001). In Matzu Archipelago, R. beigansis and R. giallolateralus can be simply distinguished from males in the elytra, and the genitalia. The elytra of R. giallolateralus have a yellow margin which is lacking in R. beigansis. Also, there are clear differences in the number of segments of the antennae and maxillary palps, and in the relative position and shape of the female labial palps. In R. beigansis the antennae are 5 -segmented, the maxillary palps are 4 segmented, and the labial palps (Fig. 9 A, 9 B) are slender and protrude beyond the anterior margin of the head. In R. giallolateralus the antennae are 8 -segmented, the maxillary palps are 5 segmented, and the labial palps are wider and shorter, almost not reaching the anterior head margin. Male. Body mostly dark brown, dorsal surface covered with light yellow pubescence. Head and pronotum shiny. Head capsule black; compound eyes blackish, extending to upper and lower area, concave dorsally; antennae brown; mandibles dark brown; maxillae dark brown; labium dark brown to brownish; pronotum dark brown; elytra dark brown, with obvious orange-yellowish or yellowish brown on each margin; ventral surface of thorax orangeyellowish; coxae and trochanters orange-yellow, femora mainly brown to dark brown, orange-yellow at base and apex, tibiae and tarsi dark brown; abdomen dark brown to blackish, with light yellow or white markings along posterior margin of segments. Body ovoid from above, blunt at front and thinnest behind, punctuation separated in dorsal view. Head wider than long, semi-circular, widest at basal margin, but narrower than the apical and basal width of pronotum, punctures separated and surrounding antenna and mouthparts; compound eyes meniscus-like in dorsallateral view, concave basally. Antennae 12 -segmented, 1.77 mm in length; scape short and thick; pedicel, similar to scape in shape; 1 st to 3 rd flagellar segments filiform, weakly broad posteriorly with length longer than scape and pedicel; 4 th to 9 th flagellar segments slightly serrate, length and shape are almost the same, lens-like sensillum located at antero-ventral side of 9 th flagellomere; 10 th flagellomere (terminal segment) spindle shaped, slender, and tapering at its apex. Pronotum transverse, semi-circular in dorsal view, anterior margin very broadly rounded with no distinct anterolateral corners and merging into the divergent lateral margins; right angles formed at the junction of lateral and basal margin, basal margin straight or weakly wavy, the widest part of pronotum, but a little narrower than humeral width of elytra; punctation separated, spread uniformly over surface; PW/HW 1.14, PW/PL 1.51, PW/PA 1.17, PW/EW 0.68, PW/EHW 0.83. Elytra elongate, contiguous along inner margin, outer margins slightly expanded; extending to, or slightly before abdominal apex; lateral margin straight and nearly parallel-sided, width contracting over apical 1 / 7; punctation separated, pubescence uniform over surface; EL/PL 5.37, EL/EW 2.40, EW/EHW 1.24. Legs slender; femur with lateral margin straight and parallel-sided; tibia slightly conical, thicker at apex than base; tarsi 5 -segmented, each segment clavate, with 2 claws apically, empodium or arolium not distinguished; HFL/HTL 0.96. Male genitalia 0.9 mm in length, trilobed without punctation and pubescence, basal plate large, covering the basal part of aedeagus and parameres in ventral view, basal margin arcuate and protruded towards base without angle, basal 1 / 2 of lateral margins dispersed, gradually separated towards apex, then subparalleled on apical 1 / 2; aedeagus shorter than parameres, bluntly cone-like, lateral margin arcuate, gradually converging towards bluntly rounded apex, grooves not apparent over surface; parameres dipper-like, apical parts protruding towards apex ventrally and surrounding the outer side of the aedeagus; basal margin narrow, forming an incisive arcuate-shape at the basal end, the outer lateral margin straight, converging rapidly towards inner side near apex, forming right angles at marginal junction, inner side straight in dorsal view, dark bands located at basal 1 / 2. Female. Larviform, 18.52 �� 1.64 mm (range: 16.32���20.44, n= 9) in length, 2.35 �� 0.17 mm (range: 2.18���2.72, n= 9) wide at basal margin of pronotum. Body yellowish or brownish. Head small, with small compound eyes. Antennae 8 -segmented, maxillary palp 5 -segmented, labial palp 3 -segmented. Labial palps are tightly shrunk. There are two sets of luminous organs. The first set is a large luminous organ on 7 th ventral abdominal segment and the second consists of three spot-like luminous organs on most segments. Two on both body sides extending from the mesothorax to the 9 th abdominal segment, and one dorsally from the middle of the mesothorax to the 8 th abdominal segment. Measurement in mm. BL: 10.99 (holotype) (range: 10.84���11.02); HW: 2.35 (range: 2.33���2.38); PL: 1.77 (range: 1.77���1.82); PA: 2.29 (range: 2.29���2.31); PB: 2.68 (2.68���2.99); PW: 2.68 (range: 2.68���2.74); EL: 9.51 (range: 9.51���10.17); EW: 3.97 (range: 3.91���3.97); EHW: 3.21 (range: 3.21���3.30); HFL: 2.12 (range: 2.11���2.15); HTL: 2.20 (range: 2.12���2.20). Distribution. TAIWAN: Dongjyu, Matzu Archipelago, Lienchiang County. Remark. The vegetation in habitats of R. giallolateralus consists of thick grass mainly, or of forests or lofty herbs, e.g. Miscanthus floridulus (Labill.). Adults occur in February to April, females are active between 6: 30 and 8:00 at night. The behavioral display, fecundity and characteristics of the eggs are similar to Rhagophthalmus beigansis. Discussion Rhagophthalmidae species have little capacity to migrate due to the wingless form of adult females, and it would be expected that isolated populations like the two described here would diverge significantly. Two Rhagophthalmus species addressed here were found in Beigan islet and Dongjyu islet separately. These islets are less than 40 km apart, but no population of these species was found in other neighboring islands. With virtually no capacity to migrate the species are totally dependent on the existing habitat of these islets and conservation of these fragile environments is thus very important. Habitat fragmentation and human activities have already been identified as the major stress to such island populations (Atkinson, 1989; Hess, 1990). Since the populations of these two Rhagophthalmus species were distributed in a somewhat fragmentary nature across the islands, further study could evaluate the habitat fragmentation. Wittmer and Ohba (1994) discovered R. ohbai in Iriomote island. Because of its distinctive distribution, ecological habitat, and biological features, the Ministry of the Environment, Japan designated R. ohbai as an emergency conservative species. The species was then investigated in a series of related studies (Ohba, 1997). The islets of Beijan and Dongjyu, are only 6.44 and 2.64 km 2 in area. Because of the instability and vulnerability in island ecology, and the dependence of Rhagophthalmus on the existing habitat, further investigation of the two Rhagophthalmus distributed in Matzu Archipelago is necessary with the aim of protecting the fragile environment. Few investigations thus far have focused on the behavior, habitat and breeding methods of Rhagophthalmidae (Ohba et al., 1996; Ohba, 1997, 2004). Male genitalia have to date presented the most useful characteristics for identification of Rhagophthalmus species (Wittmer & Ohba, 1994; Kawashima & Sat��, 2001; Kawashima & Sugaya, 2003; Li et al., 2008). Males, being nocturnal and non-luminous are difficult to collect (Li et al., 2008). Increased awareness of the genus and its distribution and improved collection methods should hopefully address this situation., Published as part of Ho, Jen-Zon, Chen, Young-Fa, Cheng, Su-Han, Tsai, Xi-Lian & Yang, Ping-Shin, 2012, Two new species of Rhagophthalmus Motschulsky (Coleoptera: Rhagophthalmidae) from Matzu Archipelago, Taiwan with biological commentary, pp. 1-13 in Zootaxa 3274 on pages 9-13, DOI: 10.5281/zenodo.214798, {"references":["Kawashima, I. & Sato, M. (2001) Three new species of the genus Rhagophthalmus (Coleoptera, Rhagophthalmidae) from southeast Asia. Elytra, 29 (2), 423 - 434.","Atkinson, A. (1989) Introduced animals and extinction. In: Western, D. & Pearl, M. (Eds.), Conservation for the Twenty-first Century. Oxford University Press, New York, pp. 54 - 69.","Hess, A. L. (1990) Overview: Sustainable Development and Environmental Management of Small Islands. In: Beller, W., D'Ayala, P. & Hein, P. (Eds.), Sustainable Development and Environmental Management of Small Islands. Paris, France, pp. 3 - 14.","Wittmer, W. & Ohba, N. (1994) Neue Rhagophthalmidae (Coleoptera) aus China und Benachbarten Landern. Japanese journal of entomology, 62, 341 - 350. (in Germany)","Ohba, N. (1997) Breeding of the firefly, Rhagophthalmus ohbai (Coleoptera: Rhagophthalmidae). Science Report of the Yokosuka City Museum, 45, 51 - 55.","Ohba, N., Goto, Y. & Kawashima, I. (1996) External morphology and behavior of Rhagophthalmus ohbai WITTMER, 1994 (Coleoptera; Rhagophthalmidae) and its habitat. Science Report of the Yokosuka City Museum, 44, 1 - 19.","Ohba, N. (2004) Flash communication systems of Japanese fireflies. Integrative and Comparative Biology, 44 (3), 225 - 233.","Kawashima, I. & Sugaya, H. (2003) An additional new species of the genus Rhagophthalmus (Coleoptera, Rhagophthalmidae) from Taiwan, with a key to males of the Taiwanese and Japanese species. Elytra, 31 (2), 353 - 359.","Li, X. Y., Ohba, N. & Liang, X. C. (2008) Two new species of Rhagophthalmus Motschulsky (Coleoptera: Rhagophthalmidae) from Yunnan, south-western China, with notes on known species. Entomological Science, 11, 259 - 267."]}
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- 2012
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12. Rhagophthalmus beigansis Ho, sp. nov
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Ho, Jen-Zon, Chen, Young-Fa, Cheng, Su-Han, Tsai, Xi-Lian, and Yang, Ping-Shin
- Subjects
Coleoptera ,Insecta ,Arthropoda ,Animalia ,Rhagophthalmidae ,Rhagophthalmus ,Biodiversity ,Rhagophthalmus beigansis ,Taxonomy - Abstract
Rhagophthalmus beigansis Ho sp. nov. (Figs 4 A, 5 A, 5 B, 5 C, 6 A, 6 B, 7 A, 7 B, 8 A, 8 B, 9 B, 10 A, 10 B, 11, 12, 13) Type. Holotype. Male. TAIWAN: Beigan, Lienchiang County, Taiwan, 29 -IV- 2011, Jing-Han Hu. (ARI). Paratypes: TAIWAN: Beigan, Lienchiang County, Taiwan, 4 males, 4 females, 8 -V- 2011, Hua-Te Fang. (ESRI, NMNS). Etymology. This species is named after Beigan islet where it was collected. Diagnosis. This new species is similar to R. ohbai but differs in the male genitalia, the female luminous organ and the appendage of the female head. In the male genitalia of R. beigansis, the posterior basal piece is sharp and a space exists between the paramere and medial lobe; whereas in R. ohbai, the posterior basal piece is cylindrical and the paramere is almost attached to the medial lobe. The female in R. beigansis has three spot-like luminous organs, two on both sides of the body between the mesothorax and the 9 th abdominal segment and one in the middle (dorsally) between them mesothorax and the 8 th abdominal segments. This is significantly different from R. ohbai where the 9 th abdominal segment has no luminous organs (Ohba et al., 1996). In labial palps of R. beigansis also protrudes more at the position of the base attachment than in R. ohbai. Finally the number segments of the antennal and maxillary palps in R. beigansis are 5 and 4, but in R. ohbai, are 7 or 8 and 5. Male. Body mostly dark brown or black, moderately shiny, pubescence light yellow, covering almost all the dorsal surface. Head capsule black, not glossy; compound eyes blackish; antennae brown to orange-yellowish; mandibles dark brown; maxillae dark brown; labrum brownish; pronotum dark brown, darker in center of disk and paler brown towards the sides; elytra dark brown, paler brown towards the base; ventral thorax orange-yellowish or yellowish brown; coxae, trochanters, and femora of all legs orange-yellowish or yellowish brown; tibiae and tarsi brownish or dark brown; abdomen dark brown in anterior segments, then darker brown to blackish in the terminal segments, with orange-yellowish or yellowish brown posterior margins. Body spindle or oval-shaped when viewed from above, tiny punctures scattered on the dorsal side of elytra. Head longer than wide, width of posterior margin wider than the apical margin of pronotum, but slightly narrower than the basal width of pronotum, odontoid protrusions surrounding whole surface of head besides appendages, more clearly and more closely clustered around compound eyes. Antennae 12 segmented, 1.68 mm (range: 1.37���1.68) long; scape cylindrical; barrel-shaped pedicel longer than scape in length; 1 st flagellar segment longer than remaining segments, slightly clavate, broader towards the apex,; 2 nd to 4 th flagellar segments also slightly expanded towards their apices with flagellar segment 2 about half as long as 1, 3 and 4 subequal slightly shorter than 2, 5��� 8 more broadly expanded at their apices than preceding segments, approximately subequal in length and shorter than more basal segments; flagellar segment 9 weakly expanded to one side, (asymmetrically clavate) with a lens-like sensillum located at the antero-ventral side of the segment; 10 th flagellar segment very narrow in apical half. Pronotum approximately semi-circular from above, basal margin slightly less than the width across elytral humeri; apical margin protruding forwardly, broadly rounded and anterolateral corners are broadly rounded and obtuse; basal margin straight or slightly arcuate; posterolateral corners acute and pointed; separated odontoid protrudings spread all over the surface of pronotum, more densely aggregated over central disc, gradually reducing in number from center to edges; PW/HW 1.12, PW/PL 1.46, PW/PA 1.39, PW/EW 0.73, PW/EHW 0.95. Elytra elongate slightly oval in outline, inner margins contiguous along their length and outer margins very slightly convex sided; contracting in apical 1 / 3 where the elytra are narrowest, discrete punctures and pubescence over surface of elytra; EL/PL 4.96, EL/EW 2.48, EW/EHW 1.30. Legs slender, femur slightly enlarged at the middle; tibia straight, slightly thinner than femur; tarsus 5 -segmented, pretarsus with 2 claws and no empodium or arolium obvious between the claws; HFL/HTL 0.95. Male genitalia 0.95 mm long, trilobate, glabrous, with no punctures, odontoid protrusions and pubescence; basal plate large and well sclerotized, covering basal 1 / 2 of parameres when viewed from below, anterior margin blunt and round, slightly arcuate, lateral margins subparallel, with a broad straight vertical groove formed at the center of the apex; aedeagus subequal to parameres in length, tapering to a rounded apex; parameres with strongly developed apices inturning but not reaching to the aedeagus; clear dark banks at basal 1 / 3. Basal plate of male genitalia large and roughly straight in each margin, is a critical characteristic on identify. Female. Larviform, 17.26 �� 2.97 mm (range: 10.48���23.41, n= 27) in length, 2.05 �� 0.30 mm (range: 1.44���2.97, n= 27) wide across basal margin of pronotum. Body color yellowish or brownish. Head small, with small compound eyes. Antennae 5 segmented, maxillary palp 4 segmented, labial palp 3 segmented. Labial palps are protruding beyond the anterior head margin. There are two sets of luminous organs in female. The first set is a large luminous organ on 7 th ventral abdominal segment and the second has three spot-like luminous organs on most segments. Each segment has three small spot-like luminous organs, two on both body sides from mesothorax to 9 th abdominal segments and one on dorsal middle from mesothorax to 8 th abdominal segments. Measurement in mm. BL: 8.86 (holotype)(range: 8.34���11.72); HW: 2.11 (range: 2.06���2.13); PL: 1.62 (range: 1.57���1.64); PA: 1.70 (range: 1.69���1.70); PB: 2.37 (2.37 ��� 2.37); PW: 2.37 (range: 1.2���2.69); EL: 8.04 (range: 8.00��� 8.11); EW: 3.24 (range: 3.20���3.25); EHW: 2.49 (range: 2.41���2.49); HFL: 1.81 (range: 1.79���1.86); HTL: 1.91 (range: 1.88���1.93). Distribution. TAIWAN: Beigan, Matzu Archipelago, Lienchiang County. Remarks. Individuals of R. beigansis are nocturnal throughout their life cycle. The vegetation within the habitat is either thick grass or forest. Larvae prey on millipedes observed in the laboratory. Adults appeared in April to May, with the female displaying the luminous behavior between 7:00 to 8: 30 p. m. (Fig. 10). After mating, the female laid 101.4 �� 26.26 eggs (range: 68���151, n= 10) that were 0.8���1.1mm in size, oval-shaped and yellow-white in color. In addition, eggs were attended (Fig. 11)., Published as part of Ho, Jen-Zon, Chen, Young-Fa, Cheng, Su-Han, Tsai, Xi-Lian & Yang, Ping-Shin, 2012, Two new species of Rhagophthalmus Motschulsky (Coleoptera: Rhagophthalmidae) from Matzu Archipelago, Taiwan with biological commentary, pp. 1-13 in Zootaxa 3274 on pages 4-9, DOI: 10.5281/zenodo.214798, {"references":["Ohba, N., Goto, Y. & Kawashima, I. (1996) External morphology and behavior of Rhagophthalmus ohbai WITTMER, 1994 (Coleoptera; Rhagophthalmidae) and its habitat. Science Report of the Yokosuka City Museum, 44, 1 - 19."]}
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- 2012
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13. Two new species of Rhagophthalmus Motschulsky (Coleoptera: Rhagophthalmidae) from Matzu Archipelago, Taiwan with biological commentary
- Author
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Jen-Zon Ho, Su-Han Cheng, Young-Fa Chen, Ping-Shin Yang, and Xi-Lian Tsai
- Subjects
Shore ,geography ,geography.geographical_feature_category ,Insecta ,Arthropoda ,Ecology ,Biodiversity ,Biology ,biology.organism_classification ,Coleoptera ,Rhagophthalmidae ,Habitat ,Genus ,Archipelago ,Animalia ,Animal Science and Zoology ,Taxonomy (biology) ,Ecology, Evolution, Behavior and Systematics ,Global biodiversity ,Taxonomy - Abstract
Two new species of Rhagophthalmus Motschulsky, R. beigansis Ho sp. nov. and R. giallolateralus Ho sp. nov. collected in a vulnerable environment in two small islets of Matzu Archipelago, Lienchiang County are described and illustrated. This brings the total number of species in this genus to 35, and the number known from small off shore islets and islands to 10. Their importance to the conservation of such small and fragile island habitats is discussed.
- Published
- 2012
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14. Acute Pneumonitis After Subcutaneous Injections of Silicone for Augmentation Mammaplasty
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Young-Fa Lai, Sui-Liong Wong, and Tung-Ying Chao
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Adult ,Pulmonary and Respiratory Medicine ,Pathology ,medicine.medical_specialty ,Injections, Subcutaneous ,Mammaplasty ,Silicones ,Critical Care and Intensive Care Medicine ,Pulmonary function testing ,Hypoxemia ,chemistry.chemical_compound ,Silicone ,Macrophages, Alveolar ,medicine ,Humans ,Respiratory system ,Pneumonitis ,Inclusion Bodies ,Lung ,medicine.diagnostic_test ,business.industry ,Pneumonia ,medicine.disease ,Microscopy, Electron ,Bronchoalveolar lavage ,medicine.anatomical_structure ,chemistry ,Anesthesia ,Acute Disease ,Female ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Bronchoalveolar Lavage Fluid - Abstract
In a period of 3 years, seven cases of acute pneumonitis have been found after patients have been subcutaneously injected with silicone for the sole purpose of augmentation mammaplasty. Adverse symptoms following these silicone injections were fever, hypoxemia, hemoptysis, and abnormal diffuse bilateral alveolar infiltrates in both lungs. Pulmonary hemorrhaging occurred, and this was substantiated by using the bronchoscope with the bronchoalveolar lavage (BAL). The alveolar macrophage obtained from the BAL contained large quantities of pleomorphic cytoplasmic particles, which in actual fact were silicone particles. They were identified as silicone by scanning electron microscopy and energy-dispersive analysis of x-rays. This evidently showed that silicone diffusion into the circulatory system and subsequent embolization of the lung. Pulmonary function studies had shown restrictive changes with increase or normal single-breath carbon monoxide diffusing capacity (Dsb). Perfusion lung scans were interpreted as showing diffuse abnormalities consisting of decreased peripheral uptake. Acute hypoxemic respiratory failure was noted in four of these patients. Silicone injections of this nature were therefore a respiratory risk and caused the inducement of pneumonitis.
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- 1994
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15. Singhiella melanolepis Chen & Ko, sp. nov
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Chen, Young-Fa and Ko, Chiun-Cheng
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Hemiptera ,Insecta ,Arthropoda ,Animalia ,Singhiella melanolepis ,Biodiversity ,Aleyrodidae ,Singhiella ,Taxonomy - Abstract
Singhiella melanolepis Chen & Ko sp. nov. (Figs 1���36) PUPARIUM (Figs 1���11). Found in groups on the undersurface of leaves. Pale to yellowish, but generally colourless when slide��mounted. Most pupae without, or with only a little, waxy secretion. Pupal case average 1.35 mm long, 1.05 mm wide, elongate to ovoid, broadest at first abdominal segment. Margin more or less smooth, or with faint crenulations marked by short radiating ridges, about 24 ridges per 100 ��m. Ends of thoracic and caudal tracheal folds not evident and marked by short smooth areas in margin (Fig. 2). Dorsum. More��or��less flat, with raised rachis or other ridges, usually on cephalothorax and dorsal disc, abdominal tergites I���VII without median tubercle but subdorsal tubercles on cephalothorax and on each side of tergites III���VI. Sculpturing of fine papillae and inscriptions, in subdorsal areas arranged in less radiating rows of papillae; sculpturing sometimes highly reduced. Longitudinal moulting suture more or less straight, reaching margin. Transverse moulting suture reaching a point just above or slightly beyond lateral margins of hind legs; ends of suture with distinct raised areas or clusters of papillae, slightly posterior relative to middle of suture. Eighth abdominal segment subequal to seventh in length. Disc pores and associated porettes scattered over dorsum; each pore/porette pair not close together, pores uniformly mounted on tubercles or papillae but porette not. Setae. Marginal setae pointed, on anterior and posterior margins, anterior pair 0.02 mm long, posterior pair 0.045 mm long. Twelve pairs of submarginal setae (Figs 2, 8) of nearly uniform length, 0.05 mm; sixth submarginal setae usually in line with other submarginal setae and not inset medially to nearly above middle leg; twelfth pair of submarginal setae not inset on caudal ridges. Cephalic setae 0.025 mm long, distinctly forward of mouthparts. First abdominal setae present. Eighth abdominal setae laterad of vasiform orifice, more or less in line with anterior margin. Caudal setae slightly anterior to margin, 0.5 mm long. Vasiform orifice (Figs 5, 10). More or less trapezoidal to almost circular, 0.06 mm long and 0.055 mm wide, middle of posterior margin not broken, often with loose tile��like structures in notched area; inner margin often with faint ridges radiating into orifice; operculum equal in size to vasiform orifice and similar in shape, nearly filling orifice, usually without posterior part distinctly narrowed; lingula exposed, without setae, almost included, except a small part of posterior end exposed outside. Caudal furrow (Figs 5, 10). With a larger tile��like structure, 0.225 mm long, less wide than vasiform orifice anteriorly, abruptly narrowed posteriorly, reaching margin; furrow lined with large granules in more or less transverse rows on wide part, more scattered on narrow part. Caudal ridges apparently slightly raised above adjacent derm, especially posteriorly. Area lateral to vasiform orifice and caudal furrow without spinules. Ventral surface (Figs 4, 7, 9, 11). Thoracic and caudal tracheal folds usually distinguishable but entirely smooth; caudal fold with a few short rows of minute spinules extending about half way to margin from vasiform orifice. Ventral setae finely pointed, posterior pair just anterior to vasiform orifice. One small, fine seta mesad of each leg, normally 2 minute setae on or near basal curve of each leg, often difficult to see. Legs curved laterally, front and middle legs on each side closely apprised; posterolateral margin of front legs and lateral margins of middle and hind legs without spinules. Antenna located just mesad of front leg, 0.07 mm, terminal process 7.5 ��m, lacking spinules at base, with a minute seta basally. Rostrum short, conical. Four pairs of spiracles present, 2 near posterior part of front and middle legs, one just beyond hind legs on anterior abdomen and one just laterad of vasiform orifice. ADULT MALE (Figs 12 ���18, 28, 32���34). Yellowish to brown when alive, with a light dusting of wax. Middle and distal end of forewing with four dusky spots. Yellowish when mounted, except extreme tip of rostrum and thorax brown. Average body length 1.5 mm (included claspers). Essentially entire body covered with minute setae. Head. With scattered minute setae with short cylindrical bases. Width across eyes 0.3 mm. Rostral IV 0.125 mm measured along longest edge, with 15���20 setae. Antennae (Figs 12, 28). Inserted in median indentation of compound eyes; segment I less than half as long as II; segment II with several scattered setae of various sizes; segment III 0.125 mm, with 2 primary sensoria apically, one about its width basad of other, one bidirectional sensorial cone more basad 0.045 mm; segment IV 0.02 mm; V 0.045 mm, with one primary sensorium apically; VI 0.03 mm, with one bidirectional sensorial cone near middle, about as long as sensorial cone on segment III; VII 0.0325 mm, with one primary sensorium a little beyond middle of segment and one sensorial cone 0.015 mm in basal third of segment, apical spine 0.02 mm; apparent annulations of antenna composed of very close��set setulae. Compound eyes (Figs 13, 32). Constricted laterally, dorsal and ventral parts connected by 2 facets; ventral facets about 50 % larger than dorsal facets. Lateral ocelli abut dorsal margin of compound eyes, about twice as wide as dorsal eye facets. Thorax. Sclerotized plates typical for aleyrodine adults. Wings with a patch of maculation in middle and near distal end. Legs. Coxa 1, 0.145 mm; femur 1, 0.2 mm, femur 2, 0.2 mm, femur 3, 0.263 mm, including dorsal tooth��like projection at extreme apices, femur 3 with 3 strong subapical spines dorsally; tibia 1, 0.263 mm, with about 45 setae and no tibial brushes, tibia 2 (Fig. 14), 0.3 mm with 1 tibial brush with 2 setae and sometimes a third seta close but slightly basad, tibia 3 (Fig. 15), 0.385 mm with about 12 setae in tibial comb, without tibial brush, and with a distinct nonsetose area basad of apical spines; tarsal segment I with following lengths and setae (tarsi 1, 2, 3): 0.105 mm with 6���8 setae, 0.105 mm with 8���10 setae, 0.12 mm with 7���9 setae; tarsal segments II with following lengths and setae (tarsi 1, 2, 3): 0.0875 mm with 7���8 setae, 0.08 mm with 4 setae, 0.0875 mm with 4 or 5 setae; hind tarsal claw 0.0375 mm. Abdomen. Ventral surface with 4 pairs of wax plates on segments II���V (Fig. 17), length/width of plate on segment II = 0.08 mm / 0.12 mm, III = 0.0575 mm / 0.13 mm, IV = 0.0575 mm / 0.125 mm, V = 0.053 mm / 0.10 mm. Each wax plate with 2 pairs of setae inward but 1 pair outward. Genital capsule (Fig. 18). 0.113 mm long and 0.165 mm wide. Vasiform orifice (Fig. 18). Oval, wider than long, lingula 0.002 mm; capsule with 5���6 pairs of dorsal setae, lateralmost setae distinctly thinner and shorter than more medial pairs, most medial pair thinner than thick middle pair. Clasper (Figs 18, 33��� 34). 0.1 mm, with five pairs of dorsal setae, and four and three pairs of setae present on inner and outer surfaces respectively, small rounded tooth on medial surface subapically. Aedeagus 0.1 mm, curved up apically and forked at end. ADULT FEMALE (Figs 19 ���27, 29, 35���36). Colour as in male. Body length 2 mm. Head. Width across eyes 0.4 mm. Antennae. (Figs 19, 29). Inserted in median indentation of compound eyes; segment I less than half as long as II, segment II with several scattered setae of various sizes; III 0.138 mm, with 2 primary sensoria apically, one just distad of other and one bidirectional sensorial cone more basad 0.06 mm; IV 0.025 mm; V 0.043 mm, with one primary sensorium apically; VI 0.045 mm, with one bidirectional sensorial cone near middle, about as long as sensorial cone on segment III; VII 0.04 mm, with one primary sensorium a little beyond middle of segment and one sensorial cone 0.05 mm on basal third of segment, apical spine 0.015 mm. Rostral IV 0.135 mm measured along longest edge, with 15���20 setae. Compound eyes (Fig. 20). Constricted laterally, dorsal and ventral parts connected by 2 facets. Legs. Coxa 1, 0.163 mm; femur 1, 0.25 mm, femur 2, 0.24 mm, femur 3, 0.30 mm with a strong subapical spine dorsally; tibia 1, 0.14 mm, tibia 2 (Fig. 21), 0.16 mm, tibia 3 (Fig. 22), 0.22 mm with about 16 setae in tibial comb and with a brush with 3 setae; tarsal segment I with following lengths and setae (tarsi 1, 2, 3): 0.11 mm with 10 setae and a strong subapical spur, 0.1 mm with 8���9 setae, 0.125 mm with 6 setae; tarsal segment II with following lengths and setae (tarsi 1, 2, 3): 0.10 mm with 7 or 8 setae, 0.09 mm with 7 setae, 0.10 mm with 4 setae; hind tarsal claws 0.025 mm, paronychium 0.04 mm. Abdomen. Ventral surface with 2 pairs of wax plates (Fig. 24) on segments II and III, length/width of plate on segment II = 10.118 mm / 0.175 mm, III = 0.113 mm / 0.180 mm. Each wax plate with 2 inner but 1 outer pairs of setae. Vasiform orifice (Fig. 25). With lingula 0.03 mm. Genitalia (Figs 26 ���27, 35��� 36). With lateral ovipositor 0.095 mm, measured as shown in Fig. 26, with 4 setae; middle ovipositor 74���84 mm, with 2 setae. The cement gland slightly segmented (Fig. 27). Material examined. Holotype puparium, TAIWAN, Chiao��chi, on Melanolepis multiglandulosa (Euphorbiaceae), 22 ��III�� 2006, C. H. Chen and Y. T. Shih (TW 2961) (NTU). Paratypes: 26 pupal cases, 7 males, 8 females, same data as for holotype (ANIC; BMNH; EMNAFU; IDAV; NTU; TARI; USNM; ZSI). Etymology. The species name melanolepis is derived from the host plant genus. Biology. This species has been collected only once, and is of no known economic importance. No ant attendance was observed, but mixed populations of Aleurodicus dispersus Russell were observed on the lower leaf surfaces. Based on the distribution of Melanolepis multiglandulosa (Euphorbiaceae), this whitefly species is likely to have a wider distribution. It is a perennial shrub widely distributed in the South Pacific Islands from Indonesia to eastern Polynesia, also in China, Taiwan, and Japan. It grows mainly in secondary places such as roadsides, regrowth thickets, depleted open secondary forest, forest edges in savannah, coconut plantations, old gardens, but also in primary forest, (Barringtonia) swamp forest, Eucalyptus deglupta dominated forest, monsoon (deciduous) forest, and among mangroves. Comments and discussion. In Taiwan, nine species are currently included in Singhiella: S. chitinosa (Takahashi), S. dioscoreae (Takahashi), S. elaeagni (Takahashi), S. kuraruensis (Takahashi), S. melanolepis sp. nov., S. piperis (Takahashi), S. subrotunda (Takahashi), S. tetrastigmae (Takahashi) and S. vanieriae (Takahashi). S. melanolepis is similar to S. elaeagni but differs as follows: 1. All setae on the dorsal disc and all submarginal setae are capitate in S. elaeagni but spiny in S. melanolepis; 2. There are 14 pairs of submarginal setae (excluding caudal setae) in S. elaeagni but only 12 pairs in S. melanolepis; 3. Thoracic tracheal pores are distinct in S. elaeagni, with 2 or 3 small teeth, but there are no distinct pores in S. melanolepis; 4. The vasiform orifice of S. elaeagni is wider than long and the end of the caudal furrow is widely open, with 2 or 3 very short rounded teeth, but such characteristics are not present in S. melanolepis. Following the redefinition of Singhiella by Jensen (2001), there are now 28 species in the genus. However, Singhiella is less clearly defined than Dialeurodes and Massilieurodes, with considerable variation in the puparia between species (see Table 2), including the opening of the thoracic tracheal pores, the number and shape of the submarginal setae, and the location of the most posterior pair of submarginal setae. Jensen (2001) described the adult characteristics of only one Singhiella species, S. citrifolli. In contrast, we have studied the adults of several species in this genus from Taiwan, and these show considerable variation in several characters. Antennal sensoria: We compared the adults of five species of Dialeurodes, five species of Massilieurodes and five species of Singhiella. The antennal segments of the Dialeurodes species bore complex sensorial plaques (Fig. 37), whereas those of the Massilieurode s species bore simple sensorial cones (Fig. 38). However, in different Singhiella species two types of sensorial cones (bidirectional and simple sensorial cones) were found on antennal segments III and VI (Figs 39���44). Compound eye pigmentation patterns: In species of Dialeurodes and Massilieurode s, we could not find pigmentation in the lower facets of the compound eyes, but in Singhiella we found pigmentation in two species, S. kuraruensis (Fig. 45) and S. piperis (Fig. 46). Male genitalia: In species of Dialeurodes and Massilieurode s, we did not observe any bifurcation in the aedeagus apex, but in Singhiella we found four types of aedeagus apex: S. kuraruensis (Fig. 47), S. melanolepis (Figs 33���34), S. piperis (Fig. 48), and S. tetrastigmae (Fig. 49). This variation might suggest that the genus Singhiella is currently unsatisfactorily defined. Table 2. Characteristics of Singhiella species from Taiwan. Species Colour Thoracic Tile��like Pairs of s.m. setae Tips of Posteriormost tracheal structures (excluding cau�� submarginal s.m. setae pores dal setae) setae 6. S. piperis yellow to brown present present 10 spiny submargin 7. S. subrotunda yellowish absent present 12 spiny submargin but small 8. S. tetrastigmae yellowish present present 15 capitate caudal ridges 9. S. vanieriae pale present present 12 capitate submargin The classification of whiteflies is based primarily on an immature stage, the puparium (Gill 1990), and adults are usually considered to be morphologically uniform (Bink��Moenen 1991). However, there are several examples of adult characters differing between species, and thus being useful for identification. David & Thenmozhi (1995) provided a comparison table of the clasper setation for four Lipaleyrodes species. Guimar��es (1996) described lateral ovipositor and cement gland structure of seven species (Aleurothrixus floccosus (Maskell), Aleyrodes proletella Linnaeus, Bemisia tabaci (Gennadius), Dialeurodes citri (Ashmead), Parabemisia myricae (Kuwana), Siphoninus phillyreae (Haliday) and Trialeurodes vaporariorum (Westwood)) but omitted other useful adult morphological characters. Similarly, Calvert et al. (2001) described the length ratios of antennal segments and the position of antennal sensoria for five species belonging to Bemisia, Rhachisphora and Aleurotrachelus. Moreover, the generic definitions of Dialeurodes and Massilieurodes are well supported by the cladistic analysis of Jensen (2001), but Singhiella is much less well supported. Our observations on adult morphology, such as the antennal sensoria and male genitalia, support the genera Dialeurodes and Massilieurodes, but the diversity among the species assigned to Singhiella does not support the suggestion that they belong to the same genus. After extensive study of whitefly specimens, we have found additional adult characters that could be used to define species. For example, the three related Dialeurodes species, D. agalmae, D. citri and D. daphniphylli, have very similar puparia but the adults differ in the numbers of antennal sensorial plaques, the numbers of ommatidia between upper and lower halves of the compound eyes, the shapes of abdominal wax plates, also the vasiform orifice, claspers, cement glands and lateral view of aedeagus, even the chaetotaxy of male and female genitalia and the chaetotaxy of mesotibia and metatibia. More importance needs to be placed on these adult character states in considering the systematic relationships between whitefly species than has been done hitherto, and adult morphological characteristics need to be taken into consideration in studies on whitefly taxonomy., Published as part of Chen, Young-Fa & Ko, Chiun-Cheng, 2007, Singhiella melanolepis, a new species of whitefly (Hemiptera: Aleyrodidae) from Taiwan with remarks on the genus Singhiella Sampson, pp. 1-16 in Zootaxa 1390 on pages 3-12, DOI: 10.5281/zenodo.175204, {"references":["Jensen, A. S. (2001) A cladistic analysis of Dialeurodes, Massilieurodes and Singhiella, with notes and keys to the Nearctic species and description of four new Massilieurodes species (Hemiptera: Aleyrodidae). Systematic Entomology, 26, 279 - 310.","Gill, R. J. (1990) The morphology of whiteflies. In: D. Gerling (Ed.) Whiteflies: Their Bionomics, Pest Status and Management. Andover, UK: Intercept, pp. 13 - 46.","Bink-Moenen, R. M. (1991) Comparisons between Neopealius rubi and Bemisia tabaci in Europe (Homoptera: Aleyrodidae). Entomologische berichten. AMST, 51, 30 - 37.","David, B. V. & Thenmozhi, K. (1995) On the characteristics of pupal case, adult and egg of Indian species of Lipaleyrodes Takahashi (Aleyrodidae: Homoptera) with description of a new species. Journal of the Bombay Natural History Society, 92, 339 - 349.","Guimaraes, J. M. (1996) The diagnostic value of the cement gland and other abdominal structures in aleyrodid taxonomy. Bulletin OPPE / EPPO Bulletin, 26, 413 - 419.","Calvert, L. A., Cuervo, M., Arroyava, J. A., ConstNatino, L. M., Bellotti, A. & Frochlich, D. (2001) Morphological and mitochondrial DNA marker analyses of whiteflies (Homoptera: Aleyrodidae) colonizing cassava and beans in Colombia. Annals of the Entomological Society of America, 94, 512 - 519."]}
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- 2007
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16. Singhiella melanolepis, a new species of whitefly (Hemiptera: Aleyrodidae) from Taiwan with remarks on the genus Singhiella Sampson
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Young-Fa Chen and Chiun-Cheng Ko
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Insecta ,Adult male ,Arthropoda ,Whitefly ,Biodiversity ,Aleyrodidae ,Biology ,biology.organism_classification ,Melanolepis ,Hemiptera ,Botany ,Animalia ,Animal Science and Zoology ,Taxonomy (biology) ,Singhiella ,Ecology, Evolution, Behavior and Systematics ,Taxonomy - Abstract
The adult male, female and puparium of Singhiella melanolepis sp. nov. are described from Melanolepis multiglandulosa (Euphorbiaceae), together with scanning electron micrographs and figures. Comparisons are made between the puparium of this species and that of Singhiella elaeagni (Takahashi 1935), and remarks are provided on the genus Singhiella Sampson. After consideration of the diversity in adult structure among the species of Singhiella, it is suggested that this genus may be defined unsatisfactorily, and that more importance should be placed on adult morphology in whitefly taxonomy.
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- 2007
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17. Clinical Indicators of Dental Implant Performance
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Young, FA, primary and Montes, GM, additional
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18. Histomorphometric Analysis of Bone Ingrowth into Porous-Coated Dental Implants
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Keller, JC, primary and Young, FA, additional
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19. National park management using self-developed and Web-based geographic information systems
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Jin-Jen Yang, Mu-Lin Wu, Ching-An Chung, and Young-Fa Lin
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Distributed GIS ,GIS Day ,Geographic information system ,Database ,National park ,business.industry ,Orthophoto ,computer.software_genre ,Web application ,The Internet ,Web mapping ,business ,computer ,Remote sensing - Abstract
Shei-Pa National Park is one of the six national parks in Taiwan. High mountains management and land-locked salmon conservation are pursued both daily and on a long-term basis at Shei-Pa National Park. GIS was developed using brand-name commercial software and a set of self-developed, Web-based software. This paper discusses what has been done at Shei-Pa National Park using a self-developed and Web-based GIS. Databases have been created in the last seven years consisting of contour maps at 5-m intervals, roads, rivers, forest compartments, geology, digital orthophoto maps, national park planning maps, and maps and drawings for every construction project. National park management has to look into conservation, research, recreation, and environmental education simultaneously. Thus, GIS has been implemented to look all aspects of problems associated with coordinates. Everything has to be located on relevant maps. The self-developed GIS can extract a single sheet of a 1:5000 map from the databases on a color monitor for further examination whenever one set of x, y coordinates is input. Different layers of maps, digital images, and attributes can be reviewed right away. Everything shown on a color monitor can be printed on a color printer. A palm-size GPS device can show the required x, y coordinates in the mountains. GIS and GPS integration is the key component of the whole process. The whole process can also be performed using Internet Web browsers.
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- 2002
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20. Loop-mediated isothermal amplification for rapid identification of biotypes B and Q of the globally invasive pest Bemisia tabaci, and studying population dynamics
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Hsieh, Chia-Hung, primary, Wang, Hurng-Yi, additional, Chen, Young-Fa, additional, and Ko, Chiun-Cheng, additional
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- 2012
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21. Two new species of Rhagophthalmus Motschulsky (Coleoptera: Rhagophthalmidae) from Matzu Archipelago, Taiwan with biological commentary
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HO, JEN-ZON, primary, CHEN, YOUNG-FA, additional, CHENG, SU-HAN, additional, TSAI, XI-LIAN, additional, and YANG, PING-SHIN, additional
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- 2012
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22. New species of Dialeurodes Cockerell (Hemiptera: Aleyrodidae) with diagnoses and keys to puparia and adults from Taiwan
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KO, Chiun‐Cheng, primary, CHEN, Young‐Fa, additional, and DUBEY, Anil K., additional
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- 2010
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23. Singhiella melanolepis, a new species of whitefly (Hemiptera: Aleyrodidae) from Taiwan with remarks on the genus Singhiella Sampson
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CHEN, YOUNG-FA, primary and KO, CHIUN-CHENG, additional
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- 2007
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24. Acute pneumonitis after subcutaneous injections of silicone for augmentation mammaplasty
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Young-Fa Lai
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Pneumonia -- Causes of ,Silicones in medicine -- Health aspects ,Mammaplasty -- Complications - Abstract
In a period of 3 years, seven cases of acute pneumonitis have been found after patients have been subcutaneously injected with silicone for the sole purpose of augmentation mammaplasty. Adverse symptoms following these silicone injections were fever, hypoxemia, hemoptysis, and abnormal diffuse bilateral alveolar infiltrates in both lungs. Pulmonary hemorrhaging occurred, and this was substantiated by using the bronchoscope with the bronchoalveolar lavage (BAL). The alveolar macrophage obtained from the BAL contained large quantities of pleomorphic cytoplasmic particles, which in actual fact were silicone particles. They were identified as silicone by scanning electron microscopy and energy-dispersive analysis of x-rays. This evidently showed silicone diffusion into the circulatory system and subsequent embolization of the lung. Pulmonary function studies had shown restrictive changes with increase or normal single-breath carbon monoxide diffusing capacity (Dsb). Perfusion lung scans were interpreted as showing diffuse abnormalities consisting of decreased peripheral uptake. Acute hypoxemic respiratory failure was noted in four of these patients. Silicone injections of this nature were therefore a respiratory risk and caused the inducement of pneumonitis. (1994;106:1152-1155) Young-Fa Lai et al, 123 Ta Pei Rd, Niao Sung Hsiang, Kaoh-siung Hsien, Taiwan, R.O.C.
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- 1995
25. Acute Pneumonitis After Subcutaneous Injections of Silicone for Augmentation Mammaplasty
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Lai, Young-Fa, primary, Chao, Tung-Ying, additional, and Wong, Sui-Liong, additional
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- 1994
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26. New species of Dialeurodes Cockerell (Hemiptera: Aleyrodidae) with diagnoses and keys to puparia and adults from Taiwan.
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Chiun-Cheng KO, Young-Fa CHEN, and DUBEY, Anil K.
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DIALEURODES , *ALEYRODIDAE , *SPECIES , *ANIMAL classification - Abstract
Adult and immature stages of a new whitefly species Dialeurodes swidi Ko are described and illustrated. It can be distinguished from other species by the abundant large tubercles scattered over its dorsum, each of them bearing a geminate pore. The biology, comparative notes and identification keys to puparia and adults of Dialeurodes species of Taiwan are provided. [ABSTRACT FROM AUTHOR]
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- 2010
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27. Low-Temperature Synthesis of ZnO Nanotubes by Supercritical CO2 Fluid Treatment
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Chang, Chang, Tsai, Ming, Chang, Chang, Syu, En, Huang, Chun, Hung, Chi, Young, Fa, Gan, Shin, and Ho, Jin
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This study applies a novel synthesis method of nanostructure, supercritical CO2 (SCCO2) fluid technology, for ZnO nanotubes growth by oxidation from metal Zn thin film on glass substrate at 60degC. A sputtering Zn film was oxidized by post-treatment of SCCO2 fluid in which 0.3 vol % deionized water was mixed. The images of scanning electron microscopy and transmission electron microscopic indicate that high density nanotubes were formed on the glass substrate. Based on material analyses in this study, ZnO nanotubes with a small diameter (30-50 nm) was formed from metal Zn thin film on a glass substrate by SCCO2 fluid technology.
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- 2011
28. Future directions in dental implant materials research
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Young Fa
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Molecular level ,business.industry ,Computer science ,medicine.medical_treatment ,medicine ,Dentistry ,Nanotechnology ,General Medicine ,business ,Biocompatible material ,Dental implant ,Characterization (materials science) ,Histological examination - Abstract
There are literally thousands of published accounts of the performance of medical and dental implants that employ metals and ceramics for which little or no materials characterization has been accomplished. Before the current decade, the level of sophistication of research was such that many materials did not even receive postprocessing analysis of the "bulk" composition, a minimal characterization we now realize is inadequate. Instead, research focused upon mechanical properties and corrosion studies at the macroscopic level, along with the search for a mythical property called biocompatibility. There were sound scientific reasons for this focus. The state of knowledge of the biology associated with implants did not allow the creation of experiments at the cellular or molecular level. Experiments progressed slowly from clinical observations to histologic observations, from which inferences of past events were made. The complete characterization of implant surfaces was virtually impossible because the analytical instrumentation and the associated understanding of physical and chemical processes occurring at surfaces were lacking. Materials were selected because of their apparently inert state, as defined by corrosion studies and histological examination of implant specimens. The focus in the 1970s was on micron-sized surface features. Porosity, grooves, textures, etc., were emphasized along with the macroscopic design features. A proliferation of designs, many of which were based on inspiration, rather than experimentation and optimization, were brought to the marketplace. Perhaps the exception to this lack of surface analysis was the development of the surface-active biomaterials based on calcium phosphates, the tricalcium phosphates, hydroxylapatites, and surface active glasses. Unfortunately, investigators did not pursue the same analyses for the "inert" materials.(ABSTRACT TRUNCATED AT 250 WORDS)
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- 1988
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29. Sex and Race Determination of Crania by Calipers and Computer: A Test of the Giles and Elliot Discriminant Functions in 52 Forensic Science Cases
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Snow, CC, Hartman, S, Giles, E, and Young, FA
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The sex and race of unidentified skeletons must sometimes be determined by medical examiners or crime laboratory personnel who have no formal training in physical anthropology. Their diagnoses, based on a hasty review of the chapter on skeletal identification in a forensic pathology textbook or on old lecture notes from a homicide seminar, are often wrong. Such knowledge cannot always substitute for the skilled eye and practiced judgment of a physical anthropologist who, in the course of his career, may have examined hundreds of skeletons.
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- 1979
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30. A 2 Bit Nonvolatile Memory Device with a Transistor Switch Function Accomplished with Edge-FN Tunneling Operation
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Jian, Yen, Chang, Chang, Chu, Kuo, Chen, Ching, Chen, Chih, Hsu, en, Tseng, chih, Lin, Sheng, Young, Fa, and Yang, Liang
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This article proposes an edge-Fowler-Nordheim (FN) tunneling method to make silicon-oxide-nitride-oxide-silicon thin film transistors possess not only 2 bit nonvolatile memory but also transistor switch functions. The 2 bit memory status is determined by measuring drain or source gate-induced drain leakage current, which can be suppressed by hole injection and electron erase after edge-FN tunneling. Because charge injection mainly occurs at the drain or source side during edge-FN tunneling operation, the device retains its transistor switch function without a threshold voltage shift during memory operation.
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- 2010
31. Temperature-Dependent Biaxial Compressive Strain Effect on p-MOSFETs
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Kuo, Jui, Chang, Chang, Dai, Hao, Chen, Ching, Lu, Jin, Ho, Han, Chao, Hsiang, Young, Fa, Cheng, Osbert, and Huang, Tung
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The influence of biaxial compressive stress on p-type metal-oxide-semiconductor field-effect transistors (MOSFETs) was investigated. It was found that drain current and hole mobility of p-type MOSFET with raised source/drain and external applied mechanical stress significantly decreased due to the increase of effective conductive mass at room temperature. However, this phenomenon was inverted above . Because the hole can gain enough thermal energy to transmit to a higher energy level by intervalley scattering, its transport mechanism was dominated by lower effective mass at higher energy level.
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- 2009
32. Self-Heating-Induced Negative Bias Temperature Instability in Poly-Si TFTs under Dynamic Stress
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Weng, Feng, Chang, Chang, Hsieh, Po, Chen, Ching, Hsu, Che, Kuo, Chuang, and Young, Fa
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In this work the characteristics of p-type polysilicon thin-film transistors (poly-Si TFTs) with dynamic bias stress were investigated. The ac stress is operated with the constant drain voltage (15 V) and the varying gate voltage (0 V to [?]15 V) to degrade the devices. Because the self-heating effect could raise channel temperature, the Si-H bonds at the poly- interface were broken due to Joule heating. The released hydrogen reacts with and causes the fixed charge in the gate oxide. Thus, the degradation of electrical characteristics of the device is mainly dominated by the self-heating-induced negative-bias-temperature instability effect.
- Published
- 2008
33. National park management using self-developed and Web-based geographic information systems.
- Author
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Mu-Lin Wu, Young-Fa Lin, Jin-Jen Yang, and Ching-An Chung
- Published
- 2001
- Full Text
- View/download PDF
34. New insights from serranid fishes on the role of trade-offs in suction-feeding diversification.
- Author
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Oufiero CE, Holzman RA, Young FA, and Wainwright PC
- Subjects
- Animals, Biomechanical Phenomena, Eating, Pressure, Skull anatomy & histology, Swimming, Bass anatomy & histology, Bass physiology, Feeding Behavior physiology, Jaw physiology, Predatory Behavior
- Abstract
Suction feeding is central to prey capture in the vast majority of ray-finned fishes and has been well studied from a detailed, mechanistic perspective. Several major trade-offs are thought to have shaped the diversification of suction-feeding morphology and behavior, and have become well established in the literature. We revisited several of these expectations in a study of prey capture morphology and kinematics in 30 species of serranid fishes, a large, ecologically variable group that exhibits diverse combinations of suction and forward locomotion. We find that: (1) diversity among species in the morphological potential to generate suction changes drastically across the range of attack speeds that species use, with all species that use high-speed attacks having low capacity to generate suction, whereas slow-speed attackers exhibit the full range of suction abilities (this pattern indicates a more complex 'ram-suction continuum' than previously recognized); (2) there is no trade-off between the mechanical advantage of the lower jaw opening lever and the speed of jaw depression, revealing that this simple interpretation of lever mechanics fails to predict kinematic diversity; (3) high-speed attackers show increased cranial excursions, potentially to compensate for a decrease in accuracy; (4) the amount of jaw protrusion is positively related to attack speed, but not suction capacity; and (5) a principal component analysis revealed three significant multivariate axes of kinematic variation among species. Two of the three axes were correlated with the morphological potential to generate suction, indicating important but complex relationships between kinematics and suction potential. These results are consistent with other recent studies that show that trade-offs derived from simple biomechanical models may be less of a constraint on the evolutionary diversification of fish feeding systems than previously thought.
- Published
- 2012
- Full Text
- View/download PDF
35. Evaluation of critical care blood analytes assessed with a point-of-care portable blood analyzer in wild and aquarium-housed elasmobranchs and the influence of phlebotomy site on results.
- Author
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Naples LM, Mylniczenko ND, Zachariah TT, Wilborn RE, and Young FA
- Subjects
- Animals, Animals, Domestic, Animals, Wild, Blood Chemical Analysis instrumentation, Blood Chemical Analysis veterinary, Blood Gas Analysis instrumentation, Blood Gas Analysis veterinary, Blood Glucose analysis, Critical Care, Cross-Sectional Studies, Female, Hydrogen-Ion Concentration, Lactates analysis, Lactates blood, Male, Oxygen blood, Phlebotomy instrumentation, Phlebotomy methods, Reference Values, Sharks blood, Species Specificity, Specimen Handling veterinary, Elasmobranchii blood, Phlebotomy veterinary, Point-of-Care Systems
- Abstract
Objective: To establish reference ranges for critical care blood values measured in wild and aquarium-housed elasmobranchs by use of a point-of-care (POC) blood analyzer and to compare values on the basis of species category (pelagic, benthic, or intermediate) and phlebotomy site., Design: Cross-sectional study., Animals: 66 wild and 89 aquarium-housed elasmobranchs (sharks and rays)., Procedures: Aquarium-housed elasmobranchs were anesthetized for sample collection; wild elasmobranchs were caught via hook and line fishing, manually restrained for sample collection, and released. Blood was collected from 2 sites/fish (dorsal sinus region and tail vasculature) and analyzed with the POC analyzer. Reference values of critical care blood analytes were calculated for species most represented in each population. Values were compared on the basis of species categorization (pelagic, intermediate, or benthic) and collection site., Results: Oxygen saturation and circulating concentrations of lactate and glucose were significantly different among aquarium-housed pelagic, intermediate, and benthic species. Lactate concentration was significantly different among these categories in wild elasmobranchs. Significant differences were detected between samples from the 2 collection sites for all blood analytes. In both study populations, pH and lactate values were infrequently < 7.2 or > 5 mmol/L, respectively., Conclusions and Clinical Relevance: Brevity of handling or chemical restraint may have reduced secondary stress responses in fish because extreme variations in blood analyte values were infrequent. Sample collection site, species categorization, acclimation to handling, and restraint technique should be considered when assessing values obtained with the POC analyzer used in this study for blood analytes and immediate metabolic status in elasmobranchs.
- Published
- 2012
- Full Text
- View/download PDF
36. Blood culture results from healthy captive and free-ranging elasmobranchs.
- Author
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Mylniczenko ND, Harris B, Wilborn RE, and Young FA
- Subjects
- Animals, Animals, Domestic, Animals, Wild, Bacteremia blood, Bacteremia microbiology, Fish Diseases microbiology, Population Surveillance, Sharks blood, Sharks microbiology, Skates, Fish blood, Skates, Fish microbiology, Skin Diseases, Bacterial blood, Skin Diseases, Bacterial microbiology, Bacteremia veterinary, Elasmobranchii blood, Fish Diseases blood, Skin Diseases, Bacterial veterinary
- Abstract
Blood culture is a diagnostic tool used in confirming bacterial disease in teleostean and elasmobranch fishes. Unlike teleosts, elasmobranchs have a normal microflora in multiple organs, but their blood has generally been considered to be sterile. In regular exams of elasmobranchs conducted at a public aquarium, occasional blood samples have tested positive on culture. This finding prompted a blood culture survey of healthy captive and wild elasmobranchs (sharks and stingrays), which showed that 26.7% of all animals were positive. Stingrays alone showed a 50% occurrence of positive blood cultures, although the total number of animals was low and freshwater species were included in this number. When elasmobranchs other than stingrays were evaluated according to metabolic category, pelagic animals had a higher percentage of positive cultures than nonpelagic animals (38.7% versus 13.9%). These results indicate that a single positive blood culture without other corroborating diagnostics is not sufficient to confirm septicemia in elasmobranchs.
- Published
- 2007
- Full Text
- View/download PDF
37. Differences in hematocrit of blood samples obtained from two venipuncture sites in sharks.
- Author
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Mylniczenko ND, Curtis EW, Wilborn RE, and Young FA
- Subjects
- Analysis of Variance, Animals, Blood Vessels, Species Specificity, Blood Specimen Collection veterinary, Hematocrit veterinary, Sharks blood
- Abstract
Objective: To evaluate differences in Hct between 2 venipuncture sites in captive and free-ranging sharks., Animals: 32 healthy adult captive sharks (Carcharhinus melanopterus, Carcharhinus plumbeus, Stegastoma fasciatum, Orectolobus japonicus, and Triaenodon obesus) and 15 captured free-ranging adult sharks (Carcharhinus limbatus and Carcharhinus acronotus)., Procedures: Blood samples were collected from the caudal tail artery followed by collection from the sinus located immediately caudal to the cranial dorsal fin. The Hct was determined for each sample and results were compared. Additionally, results for sharks that were highly active and used aerobic metabolism were compared with results for sharks that were less active and tolerant of anaerobic conditions., Results: Mean Hct for all sharks was significantly less (8% less) in blood samples obtained from the cranial dorsal fin sinus, compared with the Hct for samples obtained from the caudal tail artery. When compared on the basis of metabolic class, sharks that were more tolerant of anaerobic conditions had lower Hct values and smaller differences between the 2 venipuncture sites., Conclusions and Clinical Relevance: Hct values were significantly lower in blood samples collected from the cranial dorsal fin sinus compared with values for samples collected from the caudal tail artery. It is important to recognize this difference when evaluating hematologic variables in sharks and when establishing reference ranges for Hcts for shark populations. Sharks that were more active and relied on aerobic metabolism had higher Hct values than did anaerobic-tolerant sharks, and the difference in Hct values between venipuncture sites was more pronounced.
- Published
- 2006
- Full Text
- View/download PDF
38. Design of prosthetic cantilever bridgework supported by osseointegrated implants using the finite element method.
- Author
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Young FA, Williams KR, Draughn R, and Strohaver R
- Subjects
- Dental Alloys chemistry, Elasticity, Finite Element Analysis, Osseointegration, Pliability, Dental Prosthesis, Implant-Supported, Dental Stress Analysis methods, Denture Design instrumentation, Denture, Partial, Fixed
- Abstract
Objectives: The aim of the present work was to establish a design procedure for fixed metal prostheses supported by osseointegrated implants in order to prevent permanent deformation and hence failure following loading. Previously, the cantilever cross-sectional shape in the buccal lingual plane has been based on clinical experience and subjectivity., Methods: This work has relied on the use of linear elastic finite element analysis in order to generate a maximum effective stress at which permanent deformation commences on loading. A number of different cross-sectional shapes were investigated, both of conventional design as well as new innovative possibilities. Both straight and curved cantilever beams 26 mm long were examined., Results: The design failure chosen was based on a von Mises plastic collapse principle by comparing the calculated effective stresses with the yield stress of the metal in simple tension. It was found that the "L" shaped design was more rigid than other designs for a given mass, while a framework based on an open "I" section offers good possibilities particularly when used as curved shapes., Significance: Assuming a failure criterion based on the von Mises principle, then "L" shaped Co/Cr or stainless steel frameworks, typically 26 mm of cantilever span, undergo permanent deformation at end loadings between 130 and 140 N depending on section curvature. Since it is known biting loads can exceed these values, good design is critical if such failures are to be avoided.
- Published
- 1998
- Full Text
- View/download PDF
39. The effectiveness of topical anesthesia and vibration in alleviating the pain of oral injections.
- Author
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Hutchins HS Jr, Young FA, Lackland DT, and Fishburne CP
- Subjects
- Adult, Anesthesia, Dental instrumentation, Anesthesia, Local instrumentation, Bicuspid, Double-Blind Method, Humans, Injections adverse effects, Maxilla, Pain etiology, Pain Measurement, Anesthesia, Dental methods, Anesthesia, Local methods, Pain prevention & control, Vibration therapeutic use
- Abstract
The goal of the research was to compare the effectiveness of vibration with that of a topical anesthetic in reducing the pain of local anesthetic injections. Injections were given adjacent to maxillary premolars in four locations in 61 patients. Before injection, sites received either placebo or topical anesthetic with or without vibration. Patients rated the injection pain on a five-point scale. The topical anesthetic caused a statistically significant decrease in pain values; however, the amount of decrease was of questionable clinical significance.
- Published
- 1997
40. An electronic apparatus to measure the retinal-neural fading phenomena.
- Author
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Albee JL, Albee PR, and Young FA
- Subjects
- Afterimage physiology, Dyslexia physiopathology, Female, Humans, Male, Neurons physiology, Photic Stimulation, Reading, Retina physiopathology, Electronics instrumentation, Retina physiology, Vision, Ocular physiology
- Abstract
Fading and regeneration of visual stimuli is a phenomenon which occurs under the condition of redundant visual stimulation in the human eye. By totally encompassing a subject's visual field with large sheets of colored cardboard, which provided an undifferentiated ground, it was found that the color spontaneously disappeared and reappeared. This evidence suggested that the cycle is a fundamental aspect of the visual process. The Retinal-Neural Fading Phenomena Device was developed using light-emitting diodes (LED) as the stimulus source. This allowed the quantitative measurement of the rate of fade and degree of satiation the eye undergoes under a redundant presentation equivalent to stabilized images. The rate and degree of satiation to redundant stimulation appears to correlate highly with a subject's reading efficiency. The data suggested that rapid and deep satiation was the favored outcome if one is to be free from reading or perceptual disorders. This leads to the speculation that rapid fade of afterimages of previously read symbols is required to prepare the visual system for new material. Conversely, the inability to suppress afterimages may be a physiological factor in the "dyslexic syndrome."
- Published
- 1977
- Full Text
- View/download PDF
41. The present status of ceramic and vitreous carbon dental implants.
- Author
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Young FA
- Subjects
- Carbon, Ceramics, Dental Implantation
- Published
- 1974
42. The psychological differentiation of male myopes and nonmyopes.
- Author
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Young FA, Singer RM, and Foster D
- Subjects
- Factor Analysis, Statistical, Humans, Male, Personality Tests, Myopia, Personality
- Abstract
A comparison of 140 male myopes and 118 male nonmyopes of the entering class of Virginia Military Institute cadets in 1968 demonstrated that there are a number of Strong Vocational Interest Inventory test items which will clearly differentiate myopes from nonmyopes so that it is possible to identify 76% of the individuals falling into either class on the basis of a stepwise discriminant analysis based almost entirely on the Strong Vocational Interest Blank. The items which discriminate in favor of the myopes are essentially those which require academic achievement and individual creative performance, whereas the items which are in favor of the nonmyopes are those which require business and selling skills as well as outdoor types of activities. Further, the myopes are significantly more likely to achieve officer status and win more academic awards than the nonmyopes.
- Published
- 1975
- Full Text
- View/download PDF
43. Primate myopia.
- Author
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Young FA
- Subjects
- Adolescent, Adult, Animals, Child, Child, Preschool, Disease Models, Animal, Female, Humans, Macaca nemestrina, Male, Myopia pathology, Vitreous Body pathology, Accommodation, Ocular, Intraocular Pressure, Myopia etiology
- Abstract
Studies dealing with the development of myopia in primates are considered as they contribute to our understanding of myopia. Myopia appears to develop in two stages. The first is a lenticular change in eyes which have been focused at nearpoint for long periods; the lens remains continuously accommodated. Since accommodation in monkeys results in an increase in vitreous chamber pressure, a comparable increase in children could induce the second stage--an increase in the size of the vitreous chamber and a corresponding increase in axial length or true myopia. Behavior and personality appear to be related to myopia.
- Published
- 1981
- Full Text
- View/download PDF
44. Houston Myopia Control Study: a randomized clinical trial. Part I. Background and design of the study.
- Author
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Young FA, Leary GA, Grosvenor T, Maslovitz B, Perrigin DM, Perrigin J, and Quintero S
- Subjects
- Adolescent, Child, Clinical Trials as Topic, Eyeglasses, Female, Follow-Up Studies, Humans, Male, Myopia diagnosis, Parents education, Patient Care Team, Patient Education as Topic, Texas, Vision Tests, Visual Acuity, Myopia therapy
- Abstract
The Houston Myopia Control Study is a 3-year randomized clinical trial in which each of 213 myopic children was placed in either a single vision (standard treatment) group, a +1.00 D add treatment group, or a +2.00 D add treatment group, on the basis of a randomized procedure. Subjects for the three treatment groups were matched on the basis of sex, age, and the initial amount of myopia. The study involves two groups of investigators: an evaluation team, whose task has been to evaluate candidates before entering the study and to reevaluate each subject on a yearly basis for the 3-year period, and a patient care team, whose task has been to prescribe glasses for each subject as well as to counsel subjects and their parents in the correct use of the glasses and to provide a follow-up examination every six months for the duration of the study. Once the glasses had been prescribed, members of the evaluation team were not permitted to know which subjects wore single vision lenses and which wore bifocals. In the interest of good patient care, members of the patient care team knew which subjects wore single vision lenses and which wore +1.00 D add or +2.00 D add bifocals. In this report, the authors discuss theories concerning the etiology of myopia, methods that have been used in an attempt to control the progression of myopia, and the design of the current study. Further reports will present the results of the study on the basis of the data collected by each of the two study teams.
- Published
- 1985
45. Systemic effects of porous Ti dental implants.
- Author
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Keller JC, Young FA, and Hansel B
- Subjects
- Animals, Dogs, Lung metabolism, Macaca mulatta, Time Factors, Tissue Distribution, Dental Implantation, Endosseous, Titanium metabolism
- Published
- 1985
- Full Text
- View/download PDF
46. Bifocal control of myopia.
- Author
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Oakley KH and Young FA
- Subjects
- Adolescent, Adult, Age Factors, Child, Female, Humans, Indians, North American, Longitudinal Studies, Male, Methods, Oregon, Reading, White People, Eyeglasses, Myopia rehabilitation
- Abstract
Forty-three native American bifocal wearers grouped by yearly age levels from 9 to 15 with a mixed group of 6 to 8 year olds are matched on beginning age, sex, beginning refractive error and ending age with 83 Native American control subjects. Similarly 226 Caucasian bifocal wearers are matched on the same criteria against 192 control subjects. Although the comparisons are made on each age group, the average annual rate of progression for the bifocal Native American subjects is -0.12 and -0.10 diopters in the right and left eyes respectively against a comparable rate of progression of -0.38 and -0.36 diopters for the control subjects. These differences are significant but not as significant as those found on the Causcasian subjects of -0.02 and -0.03 diopters right and left eyes against -0.53 and -0.52 diopters for the controls.
- Published
- 1975
- Full Text
- View/download PDF
47. A predictive mathematical model for the eye's focal status.
- Author
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Brown OS, Young FA, and Shotwell AJ
- Subjects
- Humans, Lens, Crystalline physiology, Models, Biological, Retina physiology, Ocular Physiological Phenomena, Visual Acuity
- Published
- 1982
48. Comparison of subjective lens preference to objective refractive error measurements in pigtail macaques.
- Author
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Wesner MF and Young FA
- Subjects
- Animals, Female, Macaca nemestrina, Optics and Photonics, Refraction, Ocular, Visual Acuity, Eyeglasses, Refractive Errors diagnosis
- Abstract
Two measurements can be taken to determine the refractive error in human beings: a subjective, lens preference measurement and objective retinoscopy. This study determined the subjective refractive error in eight pigtailed monkeys by placing lenses of different powers in front of peepholes in a solid wall cage and recording the amount of time each subject used the holes. Retinoscopy measurements were then taken and compared to the subjective findings to determine the degree of similarity between these two refraction methods. The results showed a high correlation between the subjective measurements and the vertical ocular refraction (VOR) and spherical equivalent (SE) (rho = 0.96), further supporting generalizations made from nonhuman primate vision studies to human beings.
- Published
- 1986
- Full Text
- View/download PDF
49. Linear dimensional changes in elastic impression materials.
- Author
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Marcinak CF, Young FA, Draughn RA, and Flemming WR
- Subjects
- Agar, Chemical Phenomena, Chemistry, Physical, Elasticity, Ethers, Polymers, Silicone Elastomers, Sulfides, Surface Properties, Dental Impression Materials
- Abstract
Four classes of elastomeric impression materials (polysulfide, polyether, silicone, and agar-agar) were evaluated on the basis of linear dimensional stability as a function of time between taking and pouring an impression of mounted teeth. Four polysulfide materials produced dies which were larger than the teeth and generally increased in size with impression storage time. One silicone material produced dies slightly smaller than the teeth, and the dies from another silicone were dramatically smaller with increasing storage times. A polyether material produced slightly smaller dies for up to four hours' storage time, then increasingly larger dies up to 24 h. The dies from a reversible hydrocolloid were larger than the teeth for storage times up to 30 min, and then decreased rapidly at longer times.
- Published
- 1980
- Full Text
- View/download PDF
50. Effects of indomethacin on bone ingrowth.
- Author
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Keller JC, Trancik TM, Young FA, and St Mary E
- Subjects
- Animals, Bone and Bones pathology, Male, Prostheses and Implants, Rabbits, Time Factors, Bone Development drug effects, Indomethacin pharmacology
- Abstract
The effects of indomethacin, a nonsteroidal antiinflammatory agent, on bone ingrowth were studied using a rabbit animal model and a porous cylindrical implant system. Bone ingrowth was found to be independent of pore size in the range tested (0.6-1.0 mm). In the control (placebo-treated) group, there was a significant increase in bone ingrowth between the 2- and 8-week groups of animals. However, in the indomethacin-treated group, there was no increase in bone ingrowth with time.
- Published
- 1989
- Full Text
- View/download PDF
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