581 research outputs found
Hemiphyllodactylus hongkongensis Sung & Lee & Ng & Zhang & Yang 2018, sp. nov.
No full textHemiphyllodactylus hongkongensis sp. nov. Hong Kong Slender Gecko Fig. 2, 3 Holotype. SYS r001735 (Museum of Biology, Sun Yat-sen University), adult male collected by Wing-Ho Lee and Ho-Nam Ng on 20 April 2017 in Aberdeen Country Park, Hong Kong (22°15.51' N, 114°9.69' E; 120 m a.s.l.; Fig. 4) Paratypes. SYS r001728, SYS r001729 and SYS r001730, three adult female specimens were collected by Yik-Hei Sung, Wing-Ho Lee and Ho-Nam Ng on 7 June 2016 and 14 October 2016 in Aberdeen Country Park, Hong Kong (22°15.51' N, 114°9.69' E; 120 m a.s.l.). SYS r001732, SYS r001733 and SYS r001734, two adult females and one adult male, were collected by Yik-Hei Sung, Wing-Ho Lee and Ho-Nam Ng on 20 April 2017 in Aberdeen Country Park, Hong Kong (22°15.51' N, 114°9.69' E; 120 m a.s.l.). SYS r001731, one adult female, was collected by Yik-Hei Sung, Wing-Ho Lee and Ho-Nam Ng on 8 April 2017 on Po Toi Island, Hong Kong (22°9.83' N, 114°15.33' E; 50 m a.s.l.). Diagnosis. Hemiphyllodactylus hongkongensis sp. nov. can be separated from all other species of Hemiphyllodactylus by having the unique combination of 5 – 6 chin scales; a manual lamellar formula of 3‒3(4)‒4‒ 4; a pedal lamellar formula of 3(4) – 4(5) – 4(5) – 4; 24 – 25 continuous femoral and precloacal pores; 12 – 15 dorsal scales contained in diameter of eye; and 9 – 10 ventral scales contained in diameter of eye. Description of Holotype: Adult male; head triangular in dorsal profile, depressed, distinct from neck; lores and interorbital regions flat; rostrum relatively long (NarEye/ HeadL = 0.26); prefrontal region flat to weakly concave; canthus rostralis smoothly rounded, snout moderate, rounded in dorsal profile; eye large; ear opening oval, small; eye to ear distance greater than diameter of eye; rostral wider than high, bordered posteriorly by large supranasals; three internasals (=postnasals); external nares bordered anteriorly by rostral, dorsally by supranasal, posteriorly by one postnasals, ventrally by first supralabial (=circumnasals 3R,L); 10/10 (right/left, hereafter) square supralabials tapering to below posterior margin of orbit; 9/10 square infralabials tapering to below posterior margin of orbit; dorsal superciliaries flat, rectangular, imbricate; mental triangular, bordered laterally by first infralabials and posteriorly by two large postmentals; each postmental bordered laterally by a single sublabial; row of smaller scales extending transversely from juncture of second and third infralabials and contacting mental; gular scales triangular small, granular, grading posteriorly into slightly larger, subimbricate, throat and pectoral scales which grade into slightly larger, subimbricate ventrals. Body somewhat elongate, dorsoventrally compressed; ventrolateral folds absent; dorsal scales small, granular, 15 scales contained within one eye diameter; ventral scales, flat, subimbricate, larger than dorsal scales, 10 scales contained within one eye diameter; no enlarged, precloacal scales; 24 pore-bearing scales extending from midway between the knee and hind limb insertion of one leg to the other; forelimbs short, robust in stature, covered with granular scales dorsally and with slightly larger, flat, subimbricate scales ventrally; palmar scales flat, imbricate; all digits except digit I well developed; digit I vestigial, clawless; distal, subdigital lamellae of digits II‒V undivided, angular and U-shaped; lamellae proximal to these transversely expanded; lamellar formula of digits II‒V 3‒4 ‒4‒4 on both hands; five transversely expanded lamellae on digit I; claws on digits II‒V well developed, unsheathed; distal portions of digits strongly curved, terminal joint free, arising from central portion of lamellar pad; hind limbs short, more robust than forelimbs, covered with slightly pointed, juxtaposed scales dorsally and by larger, flat subimbricate scales ventrally; all digits except digit I well developed; digit I vestigial, clawless; distal, subdigital lamellae of digits II‒V undivided, angular and U-shaped; lamellae proximal to these transversely expanded; lamellar formula of digits II‒V 4‒5 ‒5‒4 on both feet; five transversely expanded lamellae on digit I; claws on digits II‒V well developed, unsheathed; distal portions of digits strongly curved, terminal joint free, arising from central portion of lamellar pad; posterior section of tail broken, round in cross-section; all caudal scales flat, subimbricate, not forming distinct caudal segments. Morphometric data are presented in Table 3. Color in preservative (Fig. 3). Dorsal surface of head, body, and limbs dull brown, with diffused dark and cream mottling; dorsal surface of tail light grey, faint diffuse light and dark bands; ventral surface of the head, limbs and body cream, dark mottling on throat, limbs and tail; caecum unpigmented. Variation. The coloration of most specimens is similar to the holotype, having dark transverse blotches on the dorsal surface of body and distinctive postsacral mark (Fig. 2). However, one female paratype (SYS r001732) has a more uniform color on the dorsal surface, without dark dorsal transverse blotches and postsacral mark (Fig. 5). Comparisons. We compared Hemiphyllodactylus hongkongensis with other members of the genus Hemiphyllodactylus from China and Indochina based on data obtained from the literature. We show the diagnostic characters separating this species from other nominal taxa of Hemiphyllodactylus in Table 4. Hemiphyllodactylus hongkongensis sp. nov. has 5 – 6 chin scales, which separates it from H. changningensis Guo, Zhou, Yan & Li (7 – 8), H. chiangmaiensis Grismer, Wood & Cota (8‒12), H. dushanensis (8 – 10), H. huishuiensis (8 – 10), H. jinpingensis Zhou & Liu (7 – 9), H. longlingensis Zhou & Liu (7 – 9), H. typus Bleeker (9 – 14), H. yunnanensis (7 – 8), and H. zugi (9 – 12). Hemiphyllodactylus hongkongensis sp. nov. has a manual lamellar formula of 3 – 4 – 4 – 4 or 3 – 3 – 4 – 4 which distinguish it from H. changningensis (3 – 3(4) – 3(4) – 3), H. chiangmaiensis (3 – 3 – 3 – 3, 3 – 4 – 3 – 3), and H. dushanensis (3 – 4 – 5 – 4, 4 – 5 – 5 – 4). It differs from H. banaensis Ngo, Grismer, Thai & Wood (4 – 5 – 5 – 5), H. dushanensis (4 – 5 – 5 – 5, 5 – 6 – 6 – 5), and H. zugi (4 – 5 – 5 – 5) by having a pedal lamellar formula of 3 – 4 – 4 – 4, 4 – 4 – 4 – 4 or 4 – 5 – 5 – 4. It differs from H. banaensis (18 – 21), H. changningensis (19 – 22), H. kiziriani Nguyen, Botov, Le, Nophaseud, Zug, Bonkowski & Ziegler (10 – 13), H. huishuiensis (0 – 20), H. yunnanensis (0 – 20), and H. zugi (18 – 21) by having 24 – 25 continuous femoral and precloacal pores in adult males. Hemiphyllodactylus hongkongensis sp. nov. has 12 – 15 dorsal scales contained in the diameter of the eye, which separates it from H. banaensis (17 – 20), and H. zugi (20 – 22). It differs from H. changningensis (6 – 8), H. jinpingensis (5 – 7), H. kiziriani (11 – 15), H. longlingensis (6 – 7), H. yunnanensis (5 – 7) and H. zugi (15 – 16) by having 9 – 10 ventral scales contained in the diameter of the eye. Etymology. The specific epithet “ hongkongensis ’ is in reference to the type locality, Hong Kong SAR, China. As an English common name, we suggest “ Hong Kong Slender Gecko”. Distribution. In Hong Kong, records of Hemiphyllodactylus have been made on Hong Kong Island (including Aberdeen Country Park and Pokfulam Country Park), Shek Kwu Chau, and Po Toi Island (Karsen et al. 1998) (Fig. 4). ……continued on the next pagePublished as part of Sung, Yik-Hei, Lee, Wing-Ho, Ng, Ho-Nam, Zhang, Yanjie & Yang, Jian-Huan, 2018, A new species of Hemiphyllodactylus (Squamata: Gekkonidae) from Hong Kong, pp. 361-373 in Zootaxa 4392 (2) on pages 365-369, DOI: 10.11646/zootaxa.4392.2.8, http://zenodo.org/record/119547
Asicimbex latistriatus Yan, Deng & Wei 2022, sp. nov.
No full textAsicimbex latistriatus Yan, Deng & Wei sp. nov. Fig. 8 Material examined. Holotype, female, China: Henan Province, Shan County, Ganshan Park, alt. 1000 m, 31 May 2000, leg. Meicai Wei & Yihai Zhong (ASMN). Paratypes, 7 females and 2 males, same data as the holotype; 1 female and 4 males, same locality, 1 June 2000 (ASMN). Diagnosis. The species is most similar to A. nanjingensis Yan & Wei sp. nov., but differs from the latter in the following characters: the postocellar area 1.2-1.3 × broader than long; abdominal tergum 1 without lateral carina, the posterior corner of the tergum not produced; the dorsum of mesoscutellum sparsely and minutely punctured, the surface smooth; the antennomere 3 clearly longer than longest axis of eye; the total length of lance annuli 3.9 × height of the 13th annulus, the first annulus 2.7 × as high as broad; lancet with 46 serrulae. Description. Holotype, female. Body length 14 mm (Fig. 8A). Color. Head including antenna dark yellowish brown (Fig. 8A), frons and nearby with an obscure black macula (Fig. 8C, F); thorax black, posterior margin and lateral corner of pronotum, tegula, mesoscutellum and lateral carina dark brown, mesepisternum above carina largely, posterior margin of mesepimeron, irregular macula on metepisternum and large macula on metepimeron reddish brown (Fig. 8K); abdomen dark brown, basal margin of tergum 1 and small macula near posterior corner, anterior 4/5 of tergum 2, anterior 1/3 of tergum 3, basal margin of terga 4-7 and sterna 1-3 largely black, tergum 4 slightly paler (Fig. 8O, P). Fore wing strongly smoky, cells 2M, 3M, 2Cu and A largely hyaline, veins and pterostigma largely brown to dark brown; hind wing weakly infuscate (Fig. 8A). Legs dark brown, middle and hind coxae, trochanters and dorsal side of femora black (Fig. 8I, J). Head. Dorsum of head with indistinct and fine punctures, other parts smooth, with strong luster (Fig. 8C, F). Clypeus clearly elevated in middle, anterior margin with small and deep incision; malar space 1.8 × diameter of middle ocellus (Fig. 8C); postocellar area about 1.2-1.3 × broader than long; median furrow weak, lateral furrows fine, weakly divergent backwards; POL: OOL: OCL = 5: 6: 9; in dorsal view head enlarged behind eye (Fig. 8F). Antenna about 1.4 × longer than head breadth (Fig. 8H); apical club slightly longer than antennomere 3, with the widest breadth 2.4 × apical breadth of antennomere 3, antennomere 3 clearly longer than longest axis of eyes (45: 39). Thorax. Mesothorax densely punctured, punctures on mesoscutellum sparser, surface smooth; mesonotum feebly shiny; punctures on mesepisternum above carina and elevated parts of mesepimeron dense and deep, clearly defined, interspace between punctures smooth, concave area of mesepimeron microsculptured, punctures on ventral side of mesepisternum sparse (Fig. 8E, K); mesoscutellum roundly elevated, without middle furrow; oblique middle carina on mesepisternum weak but recognizable; cenchri oval, distance between cenchri about 3.4 × longest axis of a cenchrus, metascutellum triangularly elevated, distance between serrulae about 2.3 × basal breadth of a serrula (Fig. 8E). Abdomen. Abdominal tergum 1 with minute punctures and microsculptures, other terga finely and densely microsculptured (Fig. 8O, P). Tergum 1 without lateral carina, hind corner roundish, not produced, posterior incision broad and deep, bottom round (Fig. 8O); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; lance short and broad, subapical annuli feebly broadened, total length of annuli 3.9 × height of 13th annulus, first annulus 2.7 × as high as broad (Fig. 8N); lancet with 47 annular sutures and 46 serrulae (Fig. 8N), middle serrulae narrowly truncate at apex with about 5 proximal and 5 distal subbasal teeth (Fig. 8Q). Male. Body length 16 mm (Fig. 8B), body color and structure (Fig. 8D, G) similar to female except for following parts: posterior of postocellar area in middle with a shallow depressed groove; abdominal terga 2-3 largely blackish brown; middle and hind coxae and femora distinctly elongated, with carina; hind femora distinctly swollen, about twice as broad as trochanter; penis valve shown in Fig. 8M, gonoforceps as shown in Fig. 8L. Distribution. China (Henan); South Korea? Variation. Body length 13-15 mm in female, 16-17 mm in male; club of antenna dark brown or yellowish brown; middle and hind coxae brown or blackish brown. Etymology. The specific epithet is a combination of the Latin word: " lati -" and "- striatus ", referring to the fore wing with a broad longitudinal smoky stripe. Host plant and larva . The adult types of the new species were reared two years later from the larvae collected on the trunk of Ulmus sp. The matured larvae are yellow colored with black head, thorax and abdomen without black macula. Remarks. The senior author of the paper examined 2 females and 3 males of A. latistriatus from South Korea in 2013, when there were only five species (Asicimbex eous, Asicimbex malaisei, Asicimbex elminus, Asicimbex ulmusvorus and the undescribed Asicimbex latistriatus) of the undescribed genus Asicimbex known to the author. The specimens were kept in Yeungnam University. Confirmation of this faunal record requires re-examination of the specimens.Published as part of Yan, Yu-Chen, Yan, Wen-Long, Deng, Tie-Jun & Wei, Mei-Cai, 2022, Asicimbex Yan, Deng & Wei, a new genus with eight new species and four new combinations (Hymenoptera, Cimbicidae), pp. 265-308 in Journal of Hymenoptera Research 91 on page 265, DOI: 10.3897/jhr.91.8371
Xiao shen jing jiao zhi xi bao zai xiao shu pei tai fa yu qi jian jin ru shen jing guan de yan jiu
No full textChow, Wing Ho.Thesis M.Phil. Chinese University of Hong Kong 2013.Includes bibliographical references (leaves 166-181).Abstracts also in Chinese.Title from PDF title page (viewed on 19, September, 2016).Chow, Wing Ho
San zhong chao jian dai teng hu dui gao wen de sheng li fan ying ji zhuan lu ti yan jiu
No full textWong, Ka Wing Karen.Thesis M.Phil. Chinese University of Hong Kong 2014.Includes bibliographical references (leaves 143-157).Abstracts also in Chinese.Title from PDF title page (viewed on 30, November, 2016).Wong, Ka Wing Karen
Ji yu ji bing biao shu chang shi mo shi de xin li jie ru dui gai shan er xing tang niao bing huan zhe zi wo hu li de sui ji dui zhao shi yan
No full textPh.D.Purpose of the studyType-2 Diabetes Mellitus (T2DM) patients are more likely to have poor mental health, which adversely affect their adherence to self-care activities. Relatively few interventions targeted both self-care activities and mental health, as well as how patients think of their illness, a concept known as illness representation (IR). This study examined whether an intervention based on Common-sense model (CSM) would result in better adherence to self-care activities.MethodsA prospective parallel group two-arm randomized controlled trial was conducted. A total of 455 T2DM patients were recruited from an outpatient DM clinic. Eligible patients were randomized to an intervention group or control group. Participants assigned to intervention group took part in a 5-weekly group sessions designed based on CSM, while participants assigned to control group received 5 educational booklets. The data was collected at baseline, and one month and six months after the intervention. Data on outcomes collected were disease outcomes (e.g. level of self-care, blood glucose level control),emotional outcomes (e.g. probable cases of depression, level of DM-related distress), coping strategies, self-care self-efficacy and IR towards T2DM.Summary of the resultsThe 2 x 3 linear mixed model analysis using modified intention to treat showed that the intervention produced statistically significant improvement in level of self-care (p<0.001), self-care self-efficacy (p<0.001) and adaptive coping strategies (p=0.010) compared to the control group over time. Significant improvement in both intervention and control group was found in cognitive IR chronic timeline (p=0.008) and cyclical timeline (p<0.001), and emotional representations (p=0.010). Findings from structural equation modeling showed that adaptive coping strategies and self-care self-efficacy mediated the association between participation in the intervention and level of self-care at 1-month follow-up (χ²/df ratio=3.58, CFI=0.89, IFI=0.89, RMSEA=0.08). Participants reported perceived improvements in various domains and provided positive feedbacks in the process evaluation.ConclusionsThe study showed that CSM-based intervention was effective in improving adherence to self-care activities, use of adaptive coping strategies and self-care self-efficacy among T2DM patients. Cognitive and emotional IR, adaptive coping and self-care self-efficacy were found to contribute to the intervention success on level of self-care. The intervention also demonstrated high level of feasibility and acceptability. The findings provided important insights on integrating both cognitive IR and emotional IR in improving health-related outcomes for patients with T2DM.研究目的二型糖尿病患者的精神健康比較一般人差，這對患者遵從自我護理活動有負面影響。目前較少介入針對自我護理活動和精神健康，以及患者如何看待自己的疾病，即疾病表述（illness representation)的概念。本研究的目的是評估基於疾病表述常識模式（Common-sense model）設計的心理介入能否增加患者遵從自我護理活動。研究方法本研究採用前瞻和平行雙組的隨機對照試驗，並從糖尿科專科門診招募共455位二型糖尿病患者，符合條件的患者隨機分配至介入組或對照組，介入組患者參加五次（每周一次）基於疾病表述常識模式設計的介入小組，對照組患者則接受五本糖尿病小冊子。參加者完成基線調查，並在介入結束後一個月及六個後完成隨訪調查，所收集的結果數據包括疾病結果（如自我護理、血糖監控）、情感結果（如潛在抑鬱症、糖尿相關困擾）、應對策略、自我護理的自我效能感和對二型糖尿病的疾病表述。研究結果摘要按改良式意圖治療分析法和2 x 3混合線性模型分析結果顯示，相比對照組，介入組對增加自我護理（p<0.001），自我護理的自我效能感（p<0.001）和適應性應對策略（p=0.010）有較顯著效果。介入組和對照組同時改善疾病認知表述包括長遠時間性（p=0.008）和循環時間性（p<0.001），及疾病情感表述（p=0.010）。結構方程模型結果顯示，適應性應對策略和自我護理的自我效能感對介入提高一個月後的自我護理的效果中發揮中介效應（χ²/df ratio=3.58, CFI=0.89, IFI=0.89, RMSEA=0.08）。介入組參加者在過程評估中報告了各方面的改善，並提供了正面的回饋。研究結論研究顯示基於疾病表述常識模式設計的心理介入能有效增加二型糖尿病患者遵從自我護理活動、使用適應性應對策略和自我護理的自我效能感。疾病認知和情感表述、適應性應對策略和自我護理的自我效能感有助介入提高患者自我護理，介入亦是可行和可接受的。研究結果為將疾病認知和情感表述納入改善二型糖尿病患者的健康介入提供了重要的見解。Chan, Wing Yan.Thesis Ph.D. Chinese University of Hong Kong 2019.Includes bibliographical references (leaves 101-110).Abstracts also in Chinese; some appendixes in Chinese.Title from PDF title page (viewed on 09, February, 2021).Chan, Wing Yan
CUHK electronic theses & dissertations collection
No full textSo, Wing Yan.Thesis Ph.D. Chinese University of Hong Kong 2014.Includes bibliographical references (leaves 183-207).Abstracts also in Chinese.Title from PDF title page (viewed on 20 September, 2016)
Pulsar searching and timing with the Parkes telescope
No full textPulsars are highly magnetised, rapidly rotating neutron stars that radiate a beam of coherent radio emission from their magnetic poles. An introduction to the pulsar phenomenology is presented in Chapter 1 of this thesis. The extreme conditions found in and around such compact objects make pulsars fantastic natural laboratories, as their strong gravitational fields provide exclusive insights to a rich variety of fundamental physics and astronomy. The discovery of pulsars is therefore a gateway to new science. An overview of the standard pulsar searching technique is described in Chapter 2, as well as a discussion on notable pulsar searching efforts undertaken thus far with various telescopes. The High Time Resolution Universe (HTRU) Pulsar Survey conducted with the 64-m Parkes radio telescope in Australia forms the bulk of this PhD. In particular, the author has led the search effort of the HTRU low-latitude Galactic plane project part which is introduced in Chapter 3. We discuss the computational challenges arising from the processing of the petabyte-sized survey data. Two new radio interference mitigation techniques are introduced, as well as a partially-coherent segmented acceleration search algorithm which aims to increase our chances of discovering highly-relativistic short-orbit binary systems, covering a parameter space including the potential pulsar-black hole binaries. We show that under a linear acceleration approximation, a ratio of ~0.1 of data length over orbital period results in the highest effectiveness for this search algorithm. Chapter 4 presents the initial results from the HTRU low-latitude Galactic plane survey. From the 37 per cent of data processed thus far, we have re-detected 348 previously known pulsars and discovered a further 47 pulsars. Two of which are fast-spinning pulsars with periods less than 30 ms. PSR J1101-6424 is a millisecond pulsar (MSP) with a heavy white dwarf companion while its short spin period of 5 ms indicates contradictory full-recycling. PSR J1757-27 is likely to be an isolated pulsar with an unexpectedly long spin period of 17 ms. In addition, PSR J1847-0427 is likely to be an aligned rotator, and PSR J1759-24 exhibits transient emission property. We compare this newly-discovered pulsar population to that previously known, and we suggest that our current pulsar detection yield is as expected from population synthesis. The discovery of pulsars is just a first step and, in fact, the most interesting science can usually only be revealed when a follow-up timing campaign is carried out. Chapter 5 focuses on the timing of 16 MSPs discovered by the HTRU. We reveal new observational parameters such as five proper motion measurements and significant temporal dispersion measure variations in PSR J1017-7156. We discuss the case of PSR J1801-3210, which shows no significant period derivative after four years of timing data. Our best-fit solution shows a period derivative of the order of 10 to the power -23, an extremely small number compared to that of a typical MSP. However, it is likely that the pulsar lies beyond the Galactic Centre, and an unremarkable intrinsic period derivative is reduced to close to zero by the Galactic potential acceleration. Furthermore, we highlight the potential to employ PSR J1801-3210 in the strong equivalence principle test due to its wide and circular orbit. In a broader comparison with the known MSP population, we suggest a correlation between higher mass functions and the presence of eclipses in 'very low-mass binary pulsars', implying that eclipses are observed in systems with high orbital inclinations. We also suggest that the distribution of the total mass of binary systems is inversely-related to the Galactic height distribution. We report on the first detection of PSRs J1543-5149 and J1811-2404 as gamma-ray pulsars. Further discussion and conclusions arise from the pulsar searching and timing efforts conducted with the HTRU survey can be found in Chapter 6. Finally, this thesis is closed with a consideration of future work. We examine the prospects of continuing data processing and follow-up timing of discoveries from the HTRU Galactic plane survey. We also suggest potential improvements in the search algorithms aiming at increasing pulsar detectability
Functional characterization of CDK5RAP3 in hepatocellular carcinoma and neuronal differentiation
No full textpublished_or_final_versionAnatomyDoctoralDoctor of Philosoph
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