首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   34篇
  免费   1篇
教育   16篇
科学研究   3篇
各国文化   2篇
体育   6篇
文化理论   2篇
信息传播   6篇
  2023年   1篇
  2021年   1篇
  2020年   1篇
  2019年   1篇
  2018年   1篇
  2017年   3篇
  2016年   2篇
  2014年   3篇
  2013年   6篇
  2011年   3篇
  2010年   1篇
  2009年   1篇
  2008年   2篇
  2007年   1篇
  2006年   1篇
  2005年   2篇
  2004年   1篇
  2002年   1篇
  2001年   2篇
  1998年   1篇
排序方式: 共有35条查询结果,搜索用时 203 毫秒
1.
The effect of acute hypoxic hypoxia on the profile of plasma amino acids in rats was studied and compared to that resulting from acute liver injury induced by giving carbon tetrachloride. In hypoxic rats exposed to 45% air in N2 for 5 h, the concentrations of branched chain amino acids, including valine, leucine and isoleucine, and aromatic amino acids such as phenylalanine and tyrosine were significantly increased as compared to those in normoxic rats. The ratio of branched-chain to aromatic amino acids (Fischer’s ratio) was significantly decreased. The levels of arginine and citrulline, which are related to the urea cycle, were also depressed. Furthermore, plasma proline level was reduced in hypoxic rats. The activities of plasma marker enzymes for tissue damage remained unchanged during hypoxia, indicating that tissue injury was not induced by exposure to hypoxic conditions. We suggest that the characteristic profile of plasma amino acids and the Fischer ratio are valuable tools for understanding the pathology of acute hypoxia in the absence of systemic tissue damage.  相似文献   
2.
In Japan, comic plays a leading role in electronic publishing, whereas e-book sales generated from novels are small. This study investigates format choice, such as pocket-sized paperbacks and e-books for popular novels on bestseller lists in 2010. The results show that almost half of novels are not released as e-books and Japanese authors who already have strong sales performances are not positive about releasing e-books, whereas all foreign novels are released as e-books. One reason that electronic publishing other than comics has not developed in Japan may be that many novels written by popular authors are not provided as e-books.  相似文献   
3.
Abstract

This paper discusses the political and theoretical implications of the various performances of queer self‐naming (or the refusal of which) in the face of the ongoing backlash against unconventional or non‐normative genders and sexualities. It argues that, instead of a hasty call for the discarding of identity terms or naïve recourse to them, we could keep (re)using the signs without endorsing their normative meanings and line of demarcation. Through analysing some of the feminist counter‐discourses against the backlash, arguments for indigenous Japanese queerness, and a performance by a Japanese lesbian artist, Ito Tari, it shows that the queer gesture of equivocally assuming the scandalous ‘name’ may be one of the few effective survival strategies for those who have already been scandalously (mis)named.  相似文献   
4.
This study empirically investigates the factors affecting demand for best-selling novels in paperback, including the relationship with other formats (hardcover and e-book), and the determinants of prices by estimating the demand for paperbacks and price equations. The results show that paperbacks that have hardcover versions with large sales and that are original novels made into movies or television dramas tend to be best sellers. It is also found that expected demand is not a significant determinant of paperback price, whereas the number of pages is a major factor influencing price.  相似文献   
5.
Since Japanese explore inner reactions less often and less thoroughly than Americans, they may be less well known to themselves than Americans (Barnlund, 1975). The present study has examined this hypothesis by comparing self-knowledge and self-disclosure by Japanese and Americans. This is the latter part of our study on self and culture, the first part having been printed already (Asai and Barnlund, 1993). Fourteen topics of self-disclosure were examined. Americans reported significantly higher levels of both self-knowledge and self-disclosure than Japanese. Americans reported having thought significantly more than Japanese about Grief, Religious feelings, Positive personal qualities, Physical attractiveness, and Death. In both cultures, levels of self-knowledge and self-disclosure were positively correlated, suggesting that cultures influence both knowledge of the inner self and disclosure to others. The limitation of our present approach is also briefly discussed.  相似文献   
6.
Game consoles have been adopted as a learning platform in school education. However, there is a scarcity of studies examining the utility of games consoles with built‐in WiFi as affordable learning platforms in universities. This paper contributes to knowledge about the capacity of the Nintendo DSi to create new learning spaces mediated and supported by DSi consoles, free Flipnote Studio software for DS and a dedicated course website. An application of the DSi is described for remote supplemental language tutorial activities linking a dispersed body of students on a year‐abroad programme. It was found that the use of DSi as a mobile learning platform has great potential if it is used in combination with shared webspace, such as Hatena, by increasing students' learning motivation and eliminating fears/uncertainty about their progress.  相似文献   
7.
In a middle-class sample of mothers of 2-year-olds, adult attachment classifications measured in the Adult Attachment Interview (AAI) were related to maternal self-reported emotional well-being and observed parenting behavior, and the potential mediating and moderating roles of maternal emotion were tested. Mothers classified as dismissing on the AAI reported significantly lower levels of positive affectivity. Mothers classified as preoccupied reported significantly higher levels of negative affectivity and anxiety. Preoccupied mothers were observed to be significantly higher on angry/intrusive parenting, but this association was not mediated by attachment-related differences in maternal emotion. Maternal emotional well-being did, however, moderate the associations between adult attachment and parenting behavior: Dismissing attachment was significantly associated with lower warmth/responsiveness only among mothers with higher levels of depressive symptoms.  相似文献   
8.
Scientific workforce diversity is critical to ensuring the realization of our national research goals and minority-serving institutions play a vital role in preparing undergraduate students for science careers. This paper summarizes the outcomes of supporting career training and research practices by faculty from teaching-intensive, minority-serving institutions. Support of these faculty members is predicted to lead to: 1) increases in the numbers of refereed publications, 2) increases in federal grant funding, and 3) a positive impact on professional activities and curricular practices at their home institutions that support student training. The results presented show increased productivity is evident as early as 1 yr following completion of the program, with participants being more independently productive than their matched peers in key areas that serve as measures of academic success. These outcomes are consistent with the goals of the Visiting Professorship Program to enhance scientific practices impacting undergraduate student training. Furthermore, the outcomes demonstrate the benefits of training support for research activities at minority-serving institutions that can lead to increased engagement of students from diverse backgrounds. The practices and results presented demonstrate a successful generalizable approach for stimulating junior faculty development and can serve as a basis for long-term faculty career development strategies that support scientific workforce diversity.  相似文献   
9.
The purpose of this study was to determine whether the sequence of strength training before endurance training (ST/ET) is more or less effective than endurance training followed by strength training (ET/ST). Twenty‐three females and 11 males were assigned to one of three groups: ST/ET (n= 15), ET/ST (n= 15) or control (n = 4). The 7‐week training programme consisted of strength training using 10 exercises for two sets of 3–12 repetitions and running for 20–25 min at 60–90% of heart rate reserve. Maximal oxygen uptake (VO2 max) was measured during a graded treadmill test, and muscular strength was assessed using one‐repetition maximum tests for the bench press (BP), shoulder press (SP), arm curl (AC) and leg press (LP). The VO2 max significantly (P < 0.05) increased 6.7 and 6.2% for the ST/ET and ET/ST groups, respectively. There was no significant (P > 0.05) difference between the two experimental groups. Muscular strength significantly (P <0.05) improved by 15.2% (BP), 16.6% (SP), 17.2% (AC) and 11.9% (LP) for the ST/ET group and 19.9% (BP), 24.1% (SP), 20.9% (AC) and 14.0% (LP) for the ET/ST group. There were no significant (P > 0.05) differences between the two experimental groups for the BP, AC and LP; however, the ET/ST group increased (P < 0.05) SP strength more than the ST/ET group. In conclusion, adaptations to a combination of short‐term endurance and strength training as assessed by VO2 max and BP, AC and LP strength appear to be independent of whether endurance training occurs prior to or following strength training.  相似文献   
10.
We have studied the contraction and extension of Vorticella convallaria and its mechanical properties with a microfluidic loading system. Cells of V. convallaria were injected to a microfluidic channel (500 μm in width and 100 μm in height) and loaded by flow up to ∼350 mm s−1. The flow produced a drag force on the order of nanonewton on a typical vorticellid cell body. We gradually increased the loading force on the same V. convallaria specimen and examined its mechanical property and stalk motion of V. convallaria. With greater drag forces, the contraction distance linearly decreased; the contracted length was close to around 90% of the stretched length. We estimated the drag force on Vorticella in the channel by calculating the force on a sphere in a linear shear flow.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号