AIM: To determine whether the outcomes of laparoscopic fenestration (LF) were superior to open fenestration (OF) for congenital liver cysts.METHODS: Comparative studies published between January 1991 and May 2010 on M...AIM: To determine whether the outcomes of laparoscopic fenestration (LF) were superior to open fenestration (OF) for congenital liver cysts.METHODS: Comparative studies published between January 1991 and May 2010 on Medline (Ovid),Emsco,PubMed,Science Direct;Cochrane Reviews;CNKI;Chinese Biomedical Database,VIP and other electronic databases were searched.Randomized controlled trials (RCTs) and retrospective case-control studies on the management of congenital hepatic cysts were collected according to the pre-determined eligibility criteria to establish a literature database.Retrieval was ended in May 2010.Meta-analysis was performed using RevMan 5.0 software (Cochrane library).RESULTS: Nine retrospective case-control studies involving 657 patients,comparing LF with OF were included for the final pooled analysis.The meta-analysis results showed less operative time [mean difference (MD): -28.76,95% CI: -31.03 to 26.49,P < 0.00001];shorter hospital stay (MD: -3.35,95% CI: -4.46 to -2.24,P < 0.00001);less intraoperative blood loss (MD: -40.18,95% CI: -52.54 to -27.82,P < 0.00001);earlier return to regular diet (MD: -29.19,95% CI: -30.65 to -27.72,P < 0.00001) and activities after operation (MD: -21.85,95% CI: -31.18 to -12.51,P < 0.0001) in LF group;there was no significant difference between the two groups in postoperative complications (odds ratio: 0.99,95% CI: 0.41 to 2.38,P = 0.98) and cysts recurrence rates.CONCLUSION: The short-term outcomes of LF for patients with congenital hepatic cysts were superior to open approach,but its long-term outcomes should be verified by further RCTs and extended follow-up.展开更多
Based on the web of Science database, such as the countries, research institutes, core authors, key journals and the distribution of research fields, the number of corporate social responsibility（CSR）, articles publ...Based on the web of Science database, such as the countries, research institutes, core authors, key journals and the distribution of research fields, the number of corporate social responsibility（CSR）, articles published during 20 years （1994 to 2013 ） in the world were analyzed by bibliometric method. The total of 1,544 articles and their top 20 countries, research institutes, core authors, key journals and research fields for the literature types, the number of annual articles was retrieved globally. Analyses of status and trends of CSR researches in the world based on bibliometrics were performed for providing information to CSR researchers and decision makers.展开更多
Though collocations have drawn much attention in the field of language acquisition, difficulties with them have not been investigated in much detail. This paper reports on a corpus-based exploratory study that analyze...Though collocations have drawn much attention in the field of language acquisition, difficulties with them have not been investigated in much detail. This paper reports on a corpus-based exploratory study that analyzes the mistakes learners made when they produced English collocations. The current study shows that not only beginners but also advanced learners have difficulties in choosing the right collocates and the difficulties that learners of different levels have are more or less the same. The L1 influence on the production of L2 collocations exists at every stage of learning though it varies with the learners' L2 competence.展开更多
This paper investigates the use of idioms in Chinese EFL learners' spoken English by virtue of two corpora, SECCL and COLSEC. The results indicate that there is no difference in the use of idioms between English-m...This paper investigates the use of idioms in Chinese EFL learners' spoken English by virtue of two corpora, SECCL and COLSEC. The results indicate that there is no difference in the use of idioms between English-major and non-English-major learners. The learners are competent at using most of the idioms of high and high-medium frequency. However, they use nearly none of the idioms of medium and below frequency. Based on the findings, we conclude that the learners do not have a good command of the most frequently used idioms in spoken English. Suggestions on syllabus designing and classroom teaching are brought about at the end of the paper.展开更多
This paper reports a corpus-based study on the use of adverbial connectors by Chinese non-English major EFL learners with different English proficiency levels. Research results show that there is a significant correla...This paper reports a corpus-based study on the use of adverbial connectors by Chinese non-English major EFL learners with different English proficiency levels. Research results show that there is a significant correlation between the learners' use of adverbial connectors and their writing quality. The Chinese learners with higher linguistic proficiency use more tokens and types of adverbial connectors and perform better in the use of adverbial connectors in terms of stylistic awareness in their writings than those with lower linguistic proficiency.展开更多
文摘AIM: To determine whether the outcomes of laparoscopic fenestration (LF) were superior to open fenestration (OF) for congenital liver cysts.METHODS: Comparative studies published between January 1991 and May 2010 on Medline (Ovid),Emsco,PubMed,Science Direct;Cochrane Reviews;CNKI;Chinese Biomedical Database,VIP and other electronic databases were searched.Randomized controlled trials (RCTs) and retrospective case-control studies on the management of congenital hepatic cysts were collected according to the pre-determined eligibility criteria to establish a literature database.Retrieval was ended in May 2010.Meta-analysis was performed using RevMan 5.0 software (Cochrane library).RESULTS: Nine retrospective case-control studies involving 657 patients,comparing LF with OF were included for the final pooled analysis.The meta-analysis results showed less operative time [mean difference (MD): -28.76,95% CI: -31.03 to 26.49,P < 0.00001];shorter hospital stay (MD: -3.35,95% CI: -4.46 to -2.24,P < 0.00001);less intraoperative blood loss (MD: -40.18,95% CI: -52.54 to -27.82,P < 0.00001);earlier return to regular diet (MD: -29.19,95% CI: -30.65 to -27.72,P < 0.00001) and activities after operation (MD: -21.85,95% CI: -31.18 to -12.51,P < 0.0001) in LF group;there was no significant difference between the two groups in postoperative complications (odds ratio: 0.99,95% CI: 0.41 to 2.38,P = 0.98) and cysts recurrence rates.CONCLUSION: The short-term outcomes of LF for patients with congenital hepatic cysts were superior to open approach,but its long-term outcomes should be verified by further RCTs and extended follow-up.
基金the National Natural Science Foundation of China （NSFC-AF 31361130342）.
文摘Based on the web of Science database, such as the countries, research institutes, core authors, key journals and the distribution of research fields, the number of corporate social responsibility（CSR）, articles published during 20 years （1994 to 2013 ） in the world were analyzed by bibliometric method. The total of 1,544 articles and their top 20 countries, research institutes, core authors, key journals and research fields for the literature types, the number of annual articles was retrieved globally. Analyses of status and trends of CSR researches in the world based on bibliometrics were performed for providing information to CSR researchers and decision makers.
文摘Though collocations have drawn much attention in the field of language acquisition, difficulties with them have not been investigated in much detail. This paper reports on a corpus-based exploratory study that analyzes the mistakes learners made when they produced English collocations. The current study shows that not only beginners but also advanced learners have difficulties in choosing the right collocates and the difficulties that learners of different levels have are more or less the same. The L1 influence on the production of L2 collocations exists at every stage of learning though it varies with the learners' L2 competence.
文摘This paper investigates the use of idioms in Chinese EFL learners' spoken English by virtue of two corpora, SECCL and COLSEC. The results indicate that there is no difference in the use of idioms between English-major and non-English-major learners. The learners are competent at using most of the idioms of high and high-medium frequency. However, they use nearly none of the idioms of medium and below frequency. Based on the findings, we conclude that the learners do not have a good command of the most frequently used idioms in spoken English. Suggestions on syllabus designing and classroom teaching are brought about at the end of the paper.
文摘This paper reports a corpus-based study on the use of adverbial connectors by Chinese non-English major EFL learners with different English proficiency levels. Research results show that there is a significant correlation between the learners' use of adverbial connectors and their writing quality. The Chinese learners with higher linguistic proficiency use more tokens and types of adverbial connectors and perform better in the use of adverbial connectors in terms of stylistic awareness in their writings than those with lower linguistic proficiency.
