737,180 research outputs found
Edward C. M. Chen, oral history interview and transcript
No full textThis recording and transcript form part of a collection of oral history interviews conducted by the Chao Center for Asian Studies at Rice University. This collection includes audio recordings and transcripts of interviews with Asian Americans native to Houston.Edward C. M. Chen, interviewed by Juean Chen and Clarissa Cox, June 4, 2010, in Houston, Texas
Louis Chen lecture
No full textSide A. 1. Sibelius #1. 2. Louis Chen lecture -- Side B. 1. All L. Chen's lect.Live recording (lecture)Possibly reproduced from other commercial recording or radio broadcast (Pending for review) (Sibelius' piece)Electronic reproduction from Rulan Chao Pian Audio Cassette Collection.Performers, unknown.Spoken in Chinese and English
Patient perfectionism and clinician impression formation during an initial interview
No full textHewitt, P. L., Chen, C., Smith, M. M., Zhang, L. C., Habke, M. A., Flett, G. L., & Mikail, S.F. (in press). Patient perfectionism and clinician impression formation during an initial interview. Psychology and Psychotherapy: Theory, Research and Practice
Corrigendum to “General reduced vehicle model for simulating truck-bridge pier collisions” [Dev. Built. Environ. 16 (2023) 100233] (Developments in the Built Environment (2023) 16, (S2666165923001151), (10.1016/j.dibe.2023.100233))
No full textThe authors regret there were two errors in the authors' affiliation in the published article. First, the affiliation of the first author (Daogang Ou) should only be the School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China. Second, the corresponding author (Lin Chen) should have two affiliations; the first one should be: School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China; and the second one should be: Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education, Hunan University, Changsha, 410082, China. The authors would like to apologise for any inconvenience caused
Structure characterization and tribological study of magnetron sputtered nanocomposite nc-TiAlV(N, C)/a-C coatings
Get PDFGrown by reactive unbalanced magnetron sputtering in a mixed N2 and CH4 gaseous medium, heterogeneous nanocomposite coatings in the Ti-Al-V-N-C system show extraordinarily excellent tribological performance of coated machining tools. Using analytical high resolution TEM, EELS, FEG-SEM, XRD, and Raman spectroscopy, this paper reports detailed structural and chemical characterization of the coatings grown at various CH4: N2 ratios. Meanwhile, the mechanical and tribological properties were also measured, including hardness, Young’s modulus, residual stress and the dry-sliding friction and wear at varying environmental humidity. When CH4 gas was introduced in the deposition, the structure of the coatings has been found to experience a change from nano-scale TiAlN-VN multilayer architecture to a complex mixture of columnar grains of nc-TiAlV(N,C)/a-C nanocomposites and inter-column network of sp2-type amorphous carbon. Carbon incorporation and segregation also shows remarkable influence on the columnar growth model by leading to finer grain size. As compared to the carbon-free nitride coating, the nanocomposite coatings showed substantially reduced residual stress owing to the free-carbon precipitation, whereas the coatings maintained comparable hardness to the carbon-free TiAlN/VN. Their tribological properties were found to be strongly dependent on the environment. In humid air at RH > 30%, the coatings showed low friction coefficient less than 0.4 and extremely low wear rate at a scale of ~10-17 m3N-1m-1
Cobitis oxycephala Chen YX & Chen YF 2018, sp. nov.
No full textCobitis oxycephala Chen YX & Chen YF, sp. nov. (Figs 2–7) Cobitis sinensis Chen, 1986 (nec. Sauvage & Dabry, 1874): 145 (Hainan, fig. 81). Cobitis taenia dolichorhynchus Nichols & Popo, 1927 (nec. Nichols, 1918): 335 (Hainan, fig. 8); Nichols, 1943: 197 (Fukien, Kwangtung, Hainan, fig. 81). Holotype. ♂, IHB 0509273, 67.7 mm TL, 57.9 mm SL, China, Hainan, Ding’an County (19°68′N, 110°36′E; elev. 65 m), the Nandujiang River, July 2005, leg. Kun Li. Paratypes. IHB 0509392–9, 0509401–5, 13♂, 63.1–70.3 mm TL, 51.8– 59.1 mm SL, IHB 509400, 0509406–7, 3♀, 74.6–84.7 mm TL, 61.6–71.6 mm SL, same data as holotype. Diagnosis. The new species can be distinguished from its congeners by possessing the following combination of characteristics: 13–15 large rectangular blotches on L 1; 10–14 elongated blotches on L 5; snout sharp (Figs 2–3); males with a semicircular lamina circularis at the base of the first branched pectoral fin ray (Fig. 4); mental lobes undeveloped, three superficial longitudinal lobes short and bluntly rounded (Fig. 5); suborbital spine thick and curved, with a short processus medio-caudalis (Fig. 6). Cobitis oxycephala Chen YX & Chen YF, sp. nov. is similar to C. sinensis, C. dolichorhynchus and C. zhejiangensis in color pattern (with L 1 –L 5 line on the body) and lamina circularis morphology (plate-like), but differs from them in having snout sharp (vs. rounded); 10–14 horizontally elongated blotches and without the deeper faint dusky band on L 5 (vs. 11–12 rectangular and vertically elongate spots in C. sinensis (Son & Kim, 2002); a row of more or less oval blotches and with the deeper faint dusky band on the mid-lateral line in C. dolichorhynchus (Nichols, 1918); 14–16 short vertical spots in C. zhejiangensis). It further differs from C. dolichorhynchus and C. zhejiangensis in body slender, depth 7.6 in SL in male and 7.7 in female (vs. sturdy, depth 5.8 in SL in male in C. dolichorhynchus (Nichols, 1918); 5.6–6.7 (mean 6.0) in males and 4.3–5.0 (mean 4.7) in females in C. zhejiangensis); 13–15 large rectangular blotches on L 1 (vs. irregular dark cross blotches in C. dolichorhynchus (Nichols, 1918); 13–19 rectangular blotches in C. zhejiangensis). Description (Figs 2–7, Table 2). D. III–7; A. III–5; V. I–6; P. I–6–7; C. IV–14–16–IV. Body moderately slender, compressed. Head small. Snout sharp. Eyes located on upper part and middle of head. Preorbital part of head equal to or longer than postorbital part of head. Mouth small, inferior, with three pairs of short barbels. Length of maxillo-mandibular barbels shorter than diameter of eye. Mental lobes undeveloped, three superficial longitudinal lobes short and bluntly rounded (Fig. 5) Suborbital spine thick and curved, with a short processus medio-caudalis. Processus latero-caudalis long, less than one-third of processus medio-caudalis (Fig. 6). Subdorsal scales small, oval, with a moderately large focal area, 18–20 radial grooves, and 3–5 supplementary ones (Fig. 7). Dorsal fin moderately long, inserted midway between nostril and base of caudal fin. In males, pectoral fins long, second pectoral fin ray longest (Fig. 2). In females, pectoral fins slightly short, third pectoral fin ray longest (Fig. 3). Ventral fins small and short, approximately at same level as second or third branched dorsal-fin ray. Anal fin short, located on half of space between ventral and caudal fins. Anal orifice close to anal fin. Caudal fin long, emarginated tip. Caudal peduncle with ventral adipose crest. Lateral line long, not exceeding length of pectoral fins in males, and exceeding in females. Pigmentation pattern. Color characterized by pigmentation pattern with five longitudinal lines of dark speckles on dorsolateral sides of body (L 1 –L 5 from dorsal to ventral) (Figs 2–3). Color pattern characteristic of sexual dimorphism not observed. Head sprinkled with many black dots, and a black stripe extended from insertion of rostral barbels through eye to occiput. L 1 consisted of a row of 5–6 large rectangular blotches before dorsal fin; 2 on dorsal fin and 6–7 behind dorsal fin. Gap of rectangular blotches smaller than width of blotches. L 2 composed of a line of irregularly small and solitary spots or blotches and not intermingle with gap of large rectangular blotches, and reaching beyond dorsal fin. L 3 composed a narrow stripe beyond anal fin and a row of rounded blotches behind anal fin. L 4 composed of a line of minute black dots, which fused to a line and diminished towards end of ventral fin. L 5 consisted of a row of 10–14 horizontally elongated blotches, without deeper faint dusky band. One small oblique vertical jet blotch at upper base of caudal fin base and far smaller than eye diameter. 4–5 narrow rows of dark dots on dorsal and caudal fins. Sexual dimorphism. Males smaller than females with proportionally longer pectoral fins. In males, second pectoral fin ray thickened and elongated, a semicircular lamina circularis at base of first branched pectoral fin ray. In females, third pectoral fin ray elongated. Distribution. This new species occurs in the Nandujiang River, Hainan, China (Fig. 1). Etymology. The species name is derived from the Greek oxys, meaning sharp, and kephale meaning head, in reference to the pointed head of the species.Published as part of Chen, Yongxia, Chen, Hao, He, Dekui & Chen, Yifeng, 2018, Two new species of the genus Cobitis (Cypriniformes: Cobitidae) from South China, pp. 156-168 in Zoological Systematics 43 (2) on pages 160-162, DOI: 10.11865/zs.201814, http://zenodo.org/record/461768
Metal-Free Transfer Hydroiodination of C–C Multiple Bonds
No full textThe design and a gram-scale synthesis
of a bench-stable cyclohexa-1,4-diene-based
surrogate of gaseous hydrogen iodide are described. By initiation
with a moderately strong Brønsted acid, hydrogen iodide is transferred
from the surrogate onto C–C multiple bonds such as alkynes
and allenes without the involvement of free hydrogen iodide. The surrogate
fragments into toluene and ethylene, easy-to-remove volatile waste.
This hydroiodination reaction avoids precarious handling of hydrogen
iodide or hydroiodic acid. By this, a broad range of previously unknown
or difficult-to-prepare vinyl iodides can be accessed in stereocontrolled
fashion
Blind joint maximum likelihood channel estimation and data detection for SIMO systems
No full textA blind adaptive scheme is proposed for joint maximum likelihood (ML) channel estimation and data detection of single-input multiple-output (SIMO) systems. The joint ML optimisation over channel and data is decomposed into an iterative optimisation loop. An efficient global optimisation algorithm called the repeated weighted boosting search is employed at the upper level to optimally identify the unknown SIMO channel model, and the Viterbi algorithm is used at the lower level to produce the maximum likelihood sequence estimation of the unknown data sequence. A simulation example is used to demonstrate the effectiveness of this joint ML optimisation scheme for blind adaptive SIMO systems
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