6,244 research outputs found
Using essential patent index and essential technological strength to evaluate industrial technological innovation competitiveness
No full textCitation Patterns of the Pre-Web and Web-prevalent Environments: The Moderating Effects of Domain Knowledge
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(31(4):347-352)The Identification of Soil Physical Properties Related to the Growth and Yield of Lowland Rice
No full text本試驗從民國68 年二期作至70 年一期作，在彰化粘板岩沖積土檢定20 處水田土壤物理性，結果如下：一、68年二期作，晒田前滲漏速率之倒數和稻穀產量有極顯著負相關（r=-0.69 * *），但其他期作均不顯著，此表示在68 年二期作高溫多雨氣候下，滲漏速率太低將是水稻生產的限制因子。二、晒田後表土總體密度亦和稻穀產量有顯著負相關（r＝-0.44*），故晒田後表土總體密度的檢定可作為限制根系發展的指標。
Twenty field trials were conducted on slate alluvial soils in Chang-hua area from the 2nd crop of 1979 to the 1st crop of 1981. Soil physical properties were measured during the growth period of rice plant, and yield was obtained after the harvest. The results may be summarized as follows.
During the 2nd crop of 1979, the correlation coefficient between the reciprocal of percolation rate and the rice yield was negatively significat (r= -0. 69**). However, it was not significant in the first crop, probably because of the higher temperature and heavier rainfall during the 2nd crop season. The drainage condition was worse in the 2nd crop than in the first crop, and percolation rate became a limiting factor for the growth of rice plant in the former.
The negative correlation between the bulk density of surface soil and the rice yield was also significant (r= -0.44*). It was also pointed out that the bulk density of sur-face soil measured after the first intermittent drying can be used as a indicator to show whether the root development of rice plant is affected
Preliminary study on late Quaternary climatic environment of the Taipei Basin and its possible relation to basin sediments
No full textError Analysis of End users in Online Searching: A Case Study of National Taiwan University
No full text本文以Dialog系統之書目資料庫為檢索系統，檢索者的來源則為本身具有資訊需求的國立臺灣大學教職員生。本文擬對線上資訊尋求行為進行系統化的分析，其目的在探討檢索者線上檢索時之錯誤行為及其發生位置，分析零筆資料的原因，了解時間經驗對錯誤行為的影響，並比較中美終端使用者線上資訊尋求行為之異同。The purpose of this article is to analyze the searching behavior of end users. The subjects are real end users from National Taiwan University. This article uses the DIALOG command language as its searching tool. It attempts to investigate reasons for errors and location of errors. In addition it tries to identify reasons for zero posting and compare the behavior difference between Chinese and American end users
A strategy for screening microbial strains with lipolytic specificity toward monoacylglycerols.
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Mechanisms for 15dPGJ2 upregulaion of death receptor 5 gene expression in HCT116 cells: Involvement of reactive oxygen species and CHOP gene transcription.
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