304,285 research outputs found

    Scaptodrosophila zebromyia Peng, Lin & Chen, 2022, nom. nov.

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    Scaptodrosophila zebromyia nom. nov. Scaptodrosophila zebrina Liu & Chen, 2018, hom. of S. zebrina (Bezzi, 1928). Distribution. China (Yunnan).Published as part of Peng, Hongen, Lin, Yong & Chen, Hongwei, 2022, Morphological and molecular evidence of eight new species of the genus Scaptodrosophila Duda (Diptera, Drosophilidae) from China, pp. 169-194 in Zootaxa 5093 (2) on page 186, DOI: 10.11646/zootaxa.5093.2.3, http://zenodo.org/record/590508

    Messageria scalarioides subsp. donghiana Chen & Lin 2021

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    Messageria scalarioides donghiana Z.-Y. Chen & L.-W. Lin, n. ssp. Figures 1E–H, 2A Holotype: HBUMM 10058, a big cave in mountains between Fengshan County [Hechi City] and Leye County [Baise City], Guangxi Zhuang Autonomous Region, China, ex coll. Hao Yang, 2012. Paratypes: CZY/1, LLW/1, same data as holotype. Etymology. This name comes from the local Zhuang language “dongh”, which means “cave”. Diagnosis. This subspecies can be distinguished from the nominate subspecies by the larger shell and wider lower whorls and umbilicus. Also, the aperture of M. scalarioides donghiana n. ssp. and 1/8 whorl behind it evidently deviate from the axis and umbilicus. Measurements. H = 3.70 mm, W = 3.37 mm, D A = 1.89 mm (holotype). Vernacular name. Į梯Ħfiḏ洞Ë亚ḋ xuán tī chóng lèi luó dòng xué yà zhǒng Distribution. CHINA: Guangxi.Published as part of Chen, Zhe-Yu & Lin, Li-Wen, 2021, Notes on the genus Messageria Bavay & Dautzenberg, 1904, with descriptions of a new speciesand anew subspecies (Gastropoda: Caenogastropoda: Cyclophoroidea Alycaeidae), pp. 129-134 in Zootaxa 5067 (1) on pages 131-132, DOI: 10.11646/zootaxa.5067.1.9, http://zenodo.org/record/565663

    Does Downloading PowerPoint Slides Before the Lecture Lead to Better Student Achievement?: Reply

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    This reply responds to a comment by Cannon (2011) that opens the debate on consistency of the effect of downloading PowerPoint slides before lectures on students’ exam performance. Cannon (2011) points out potential endogeneity problems in Chen and Lin (2008) and attempts to explore the unconditional mean effect of downloading PowerPoint slides for the full sample. In this reply, we firstly argue that the estimates in our original article are consistent since the effect of interest is the “conditional†treatment effect but not the unconditional mean effect. We provide explanations for our rationale of estimating the “conditional†treatment effect. Secondly, we propose a modified downloading variable to replicate Cannon’s analysis. Our results suggest that downloading PowerPoint slides before the exam does not produce a significant effect on absent students’ exam performance which is different from the results in Cannon (2011). Our analysis does support Cannon’s argument that students fixed effects are different across different attendance status.

    Inhibition of cyclooxygenase activity, platelet aggregation and thromboxane B₂ production by two environmental toxicants: m- and o-cresol

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    Chiu-Po Chan, Ho Yuan-Soon, Ying-Jen Wang, Wan-Hong Land, Lin-I Chen, Yi-Jane Chen, Bor-Ru Lin, Mei-Chi Chang, Jiiang-Huei Jen

    Comment on Chen and Lin “Does downloading Powerpoint slides before the lecture lead to better student achievement?â€

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    Chen and Lin (2008) is an interesting attempt to measure the effect of students having access to PowerPoint slides before a lecture. They argue that such access leads to better learning outcomes as measured by higher exam marks. While their empirical results shed some light on students’ use of PowerPoint slides, I argue that they have not succeeded in isolating the treatment effect and the correlations cannot be interpreted as causal.

    The stem cell E3-ligase Lin-41 promotes liver cancer progression through inhibition of microRNA-mediated gene silencing

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    Lin-41 is a stem cell-specific E3 ligase and a known target of the tumour suppressor microRNA (miRNA) let-7. Lin-41 was recently reported to mediate ubiquitylation and degradation of the miRNA pathway protein Ago2. We demonstrate that Lin-41 is over-expressed in hepatocellular carcinoma (HCC). Lin-41 over-expression correlates with high a-fetoprotein level, high tumour grade and high tumour stage and predicts early tumour recurrence. Lin-41 is a strong predictor of poor long-term survival for patients with HCC. Lin-41 knock-down by RNA interference in HCC cell lines Huh7 and Hep3B suppressed proliferation in vitro and reduced in vivo tumour growth in NOD/SCID mice. On the other hand, over-expression of Lin-41 in the HCC cell line SK-Hep1 enhanced tumourigenicity. Over-expression and knock-down of Lin-41 led to inverse changes in the levels of Ago1 and Ago2 proteins. Over-expression of Ago1 and Ago2 reduced in vivo tumour growth. Lin-41 over-expression suppressed let-7 activity in HCC cell lines and expression of Lin-41 enhanced the expression of let-7-regulated oncogenes c-Myc, Lin-28B, HMGA2 and type 1 insulin-like growth factor receptor (IGF1R). Expression of Lin-28B and c-Myc enhanced the expression of Lin-41. Chromatin immunoprecipitation and reporter assays revealed direct association of c-Myc with the Lin-41 promoter, resulting in transcriptional transactivation. Our results indicate that Lin-41 plays an important role in the growth of HCC by regulating RISC complex proteins Ago1 and Ago2 to inhibit miRNA-mediated gene silencing and promote the expression of oncogenic proteins. Lin-41 is also a strong prognostic factor for patients with HCC. Copyright (C) 2012 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd

    Chasing the China wind: a musical journey

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    In this documentary, Chen-Yu was to explore the musical memories of Post-90s Generation across Taiwan, Hong Kong, China, and the UK. This film presents that the way audiences engage with China Wind music reflects a constant negotiation of Chineseness that takes place in both the creation and consumption of music. In the meantime, popular music helps the post-90s audience creating their identities along the way to discovering and defining ‘selves’ while imagining themselves being or not being Chinese

    [[alternative]]A Study on the Relation of the Citizen’s SubjectiveI Impression on the Spouses from Mainland China and Vietnam and Community Educational Policies in Shu Lin City in Taipei ounty.

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    [[abstract]]A Study on the Relation of the Citizen’s SubjectiveI Impression on the Spouses from Mainland China and Vietnam and Community Educational Policies in Shu Lin City in Taipei ounty. Abstract By:Chou chen- tsung Advisor:Lin en-chung The purpose of this research is to understand the current situation of the citizen’s subjective impressions on the spouses from Mainland China and Vietnam in Shu Lin City. The survey is carried out by self-designed questionnaires. The parents of the students in 10 ele mentary schools of Shu Lin City were taken as samples, 1000 que stionnaires were released, in which 825 effective copies were responded and returned (reaching a 93.0% share of all return questionnaires). The methods for analyzing the data are adopted from SPSS Statistic Software, which includes avera ges, standard deviation,t-test,ANOVA…etc to analyze.The main findings are as below: 1. The subjective impression of Shu Lin citizens on the Mainland spouses tends to be “ordinary” to “slightly good.” 2. Regarding the subjective impression of Shu Lin citizens on the Mainland spouses, there is a significant difference on the four out of six different variants, which are gender, occupations, marital status, and their experience of contacting Mainland China spouses. 3. The subjective impression of Shu Lin citizens on the Vietnamese spouses tends to be “ordinary”to “slightly good.” 4. Regarding the subjective impression of Shu Lin citizens on the Vietnamese spouses, there is a significant difference on the three out of six different variants, which are occupations, marital status, and educational background. 5. There is a significant difference on the citizens’ subjective impres sion between the spouses from Mainland China and those from Vietnam. “Focus Group Interview” was also practiced to enrich the study. Based on the research result, some suggestions regarding the effective community educational policies are proposed. 1.Publicize the positive impressions of Shu Lin citizens toward the spouses from Mainland China and Vietnam. 2.More researches and studies should be done by th government and the academic institutes in order to facilitate the positive understanding. 3.Encourage the positive reports from the media which should be carefully regulated by the government and the non-gover nmental organizations. 4.For schools, enhance multicultural teaching environment;for the government, host more multicultural exhibitions about the spouses from Mainland and Vietnam. 5.Make good use of the resources from schools and communities to popularize the idea of “multicultural community educati on” as well as to facilitate the integration of different races. 6.The spouses from Mainland and Vietnam should learn actively and positively to adapt themselves to the lifestyles of the ir family and the community; therefore, they are able to gain more positive interaction and feedback from the peoplein the community. Key words: Mainland China spouses, Vietnamese spouses, Transnational marriage, Subjective impression
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