1,721,831 research outputs found
Tong ji hua he wu bo mo tai yang neng dian chi: xin tou ming dao dian dian ji yu que xian wu li
No full textYin, Ling = 銅基化合物薄膜太陽能電池 : 新透明導電電極與缺陷物理 / 尹苓.Thesis Ph.D. Chinese University of Hong Kong 2015.Includes bibliographical references.Abstracts also in Chinese.Title from PDF title page (viewed on 26, October, 2016).Yin, Ling = Tong ji hua he wu bo mo tai yang neng dian chi : xin tou ming dao dian dian ji yu que xian wu li / Yin Ling
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
FIGURE 2 in A new species of the diatom genus Campylodiscus (Bacillariophyta, Surirellaceae) from Dongtan, Chongming Island, China
No full textFIGURE 2. LM micrographs of Campylodiscus sinensis, sp. nov. Figure B is the holotype. Scale bars = 10 µm.Published as part of Wu, Bo, Liu, Qi, Wang, Quanxi & Kociolek, J. Patrick, 2013, A new species of the diatom genus Campylodiscus (Bacillariophyta, Surirellaceae) from Dongtan, Chongming Island, China, pp. 49-54 in Phytotaxa 115 (2) on page 51, DOI: 10.11646/phytotaxa.115.2.3, http://zenodo.org/record/507907
Are the monophlebid genera Drosichoides Morrison and Buchnericoccus Reyne synonyms? (Hemiptera, Coccomorpha, Monophlebidae)
No full textWu, Bo-Wen, Wu, San-An (2018): Are the monophlebid genera Drosichoides Morrison and Buchnericoccus Reyne synonyms? (Hemiptera, Coccomorpha, Monophlebidae). Zootaxa 4497 (2): 285-294, DOI: 10.11646/zootaxa.4497.2.
Fabrication of metal matrix nanocomposite surface on WE43 using friction stir processing for biomedical implant application / Wu Bo
No full textMagnesium (Mg) alloys are favorable for biomedical implants because of their excellent biocompatibility, biodegradability in physiological environment, similar density and Young’s modulus to natural bone, becoming a new generation biodegradable medical implant material. However, the uncontrollable degradation rate in biological environment and bacterial infection restrains their medical application as implant materials. Hence, surface modification techniques are being used to improve the hardness, bio-corrosion, in-vitro biocompatibility and antibacterial properties of Mg-based alloys. In the present work, as a promising surface modification method due to its cost-effective and pollution-free characteristics, friction stir processing (FSP) was utilized to realize surface modification of Mg alloy WE43 with reinforced particles. Initially, the influence of rotational speed, traverse speed and number of FSP pass on the microstructure, stirring zone morphology and hardness behavior of the WE43 alloy were optimized to develop defect-free surface layer on the WE43 alloy. Further, to improve the degradation rate, WE43 reinforced with single nano-hydroxyapatite (nHA) particles was fabricated. Later, the bioactivity, in-vitro cytocompatibility and in-vitro antibacterial properties of WE43 reinforced with hybrid nanocomposites of nHA doped with nano-silver (nAg) for enhanced biocompatibility and osseointegration in orthopaedic implants were verified. Reinforced nHA and nAg particles were filled in a groove at surface of the WE43 matrix. The experiments were performed for different weight percentages of nHA and nAg particles. Microstructural and phase analysis of FSPed samples were observed by OM, SEM with EDS, EBSD and XRD. Corrosion properties were evaluated by electrochemical corrosion test and immersion test. Wettability test and in-vitro bioactivity behavior were performed on all FSPed WE43/nHA composites. In addition, for FSPed WE43/nHA/nAg composites, in-vitro antibacterial test was investigated against Escherichia coli and Staphylococcus aureus bacteria. In-vitro cytotoxicity test was exposed to mouse calvarial preosteoblasts and evaluated using CCK-8 assay. The results showed that FSP is a feasible method to refine the microstructure and improve the properties of WE43 alloy. The microstructure was refined and defect-free WE43 surface metal matrix composites were developed at 1250 rpm and 30 mm/min. Dynamic recrystallization is responsible for the creation of fine equiaxed grains in the stirring zone. After three passes, the FSPed WE43-3P alloy and WE43/nHA-3P composite have the smallest grain size (2.63 and 1.88 μm), which were reduced by 94.29% and 95.92% compared to base metal, respectively. Additionally, the microhardness of FSPed WE43/nHA-3P composite was 105.59 HV increased by 135%. The reinforced HA and Ag particles underwent fragmentation and redistribution, resulting in improved corrosion resistance and lower degradation rate. The wettability test showed an improvement in contact angle and surface energy for FSPed samples. The atomic ratio of Ca/P after immersion 7d reached 1.61 which indicates superior bioactivity for FSPed WE43/nHA/nAg composite. In-vitro cytotoxicity test and in-vitro antibacterial test proved nAg has an impact on hindering bacterial growth on the surface. These results indicate that the grain refinement by FSP and introduction of nHA and nAg particles play a significant role in degradation rate, in-vitro biocompatibility and antibacterial of WE43 alloy for biomedical applications
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
A review of the genus Saccharicoccus Ferris, 1950 (Hemiptera: Coccomorpha: Pseudococcidae) in China, with description of a new species
No full textZhang, Jiang-Tao, Wu, Bo-Wen, Wu, San-An (2018): A review of the genus Saccharicoccus Ferris, 1950 (Hemiptera: Coccomorpha: Pseudococcidae) in China, with description of a new species. Zootaxa 4375 (1): 127-135, DOI: 10.11646/zootaxa.4375.1.
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