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排序方式: 共有163条查询结果,搜索用时 15 毫秒
91.
Toshiya Masuda Takuya Kirikihira Yoshio Takeda Shigetomo Yonemori 《Journal of the science of food and agriculture》2004,84(11):1421-1427
The antioxidant reaction of carnosol, a phenolic diterpene of sage and rosemary, produced ortho‐ and para‐quinone derivatives. Although the orthoquinone derivative of carnosol (CARQ) is stable in a lipophilic solution and has a very weak antioxidant activity, the thermal treatment of CARQ in lipid restored strong antioxidant activity. HPLC analysis of the thermal recovery reaction clarified that the strong activity was mainly due to the reproduced carnosol. A possible mechanism for the production of carnosol from CARQ is the self‐redox reaction of CARQ. Two of the oxidation products from CARQ in the thermal recovery reaction were identified to be rosmariquinone and dehydrorosmariquinone. Copyright © 2004 Society of Chemical Industry 相似文献
92.
The volatiles of five samples of Greek propolis from various geographic origin (A–E) were analyzed by capillary gas chromatography, using flame ionization GC and mass spectrometric detection. Ninety-four components were identified from the oils. The major components from each sample were found to be: junipene (11.7%), α-pinene (7.9%), manoyl oxide (7.1%) (sample A), α-pinene (45.8%), trans-β-terpineol (6.6%) (sample B), α-pinene (17.7%), α-eudesmol (12.1%), n-decanal (6.2%), guaiol (5.0%) (sample C), α-pinene (18.2%), δ-cadinene (8.4%) and α-muurolene (5.0%) (sample D), α-pinene (10.9%), n-decanal (10.3%), cedrol (6.3%), n-nonanal (5.4%), and manool (5.2%) (sample E). The total profile of the volatile constituents of all samples reveals the predominance of terpenoids, especially of α-pinene. The in vitro antimicrobial activity of the volatiles from all five studied samples against six bacteria and three fungi is also assayed and reported. 相似文献
93.
The increasing spread of photovoltaic (PV) systems occurring nowadays does not always keep pace with respective legislative initiatives, especially those regarding a specific relation between PV systems, the natural environment and landscape. As a result of this differentiation, the existence of legislative gaps or omissions is noticed. Thus, while the development of Renewable Energy Sources (RES) is actively promoted by the government in general, from a legal point of view there are no equivalent preventive measures for the protection and preservation of physical environment and landscape aesthetics, at least in all types of RES, with the exception of wind farms. In fact, in the case of PV systems, there is no specific legal framework, which would regulate their integration in the environment, and in particular into landscape.The work analyzes a method for assessment of aesthetic impact caused by PV plants. The method is developed in MATLAB and based on the use of a PV plant photo and the quantification of three parameters: visibility, color and fractality. Purpose of this work is to propose this method as an applicable integration rule of PV systems into landscape, aiming to reduce its aesthetic downgrading, contributing thereby to sustainability.Additionally, in an interdisciplinary approach, the suggested method restores the issue of the explicit legislative provision of specific rules and criteria regarding the PV systems integration into landscape. 相似文献
94.
ABSTRACT: Musts from 3 grape varieties were used to elucidate the effect of the presence of grape solids in must on the volatile composition of the resultant white wines. Volatile compounds were analyzed by GC/MS and GC/FPD except H2 S, which was measured spectrophotometrically. Increasing quantities of grape insoluble material decreased the substances that enhanced aroma of Savatiano and Batiki wines. Simultaneously, the levels of compounds that degrade wine aroma, when formed in large amounts, were increased. However, in Muscat of Hamburg wines, the levels of some volatiles were not influenced by must turbidity in the same way as in wines of the other cultivars. 相似文献
95.
96.
《中国标准化(英文版)》2014,(4)
正China and Greece Sign the Standardization Cooperation Agreement Witnessed by Chinese Premier Li Keqiang and Greek Prime Minister Antonis Samaras,AQSIQ Minister Zhi Shuping and ELOT Chairman and Executive Director Angelos Tolkas signed the SAC-ELOT Standardization Cooperation Agreement.The Agreement is one of the critical cooperation documents signed during Li Keqiang’s visit in Greece,encouraging China and Greece to 相似文献
97.
Robert Harbison 《Architectural Design》2010,80(2):44-49
Robert Harbison defines the Baroque in the 17th and early 18th centuries, which is so often characterised in contrast with the Renaissance by its excess and drama. In doing so, he challenges the reader to consider whether this artful style of subversion, tension, movement, gravity-defying feats and freedom was really one of whimsical frivolity or subversive disquiet. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
98.
99.
Scott Olsen 《Nexus Network Journal》2002,4(1):97-110
Scott Olsen examines the philosophy of Plato to bring to light the nature of Plato’s Second Principle, known as the Indefinite
Dyad, sometimes called the Greater and the Lesser, and its relation to the Golden Section, ϕ . He responds to the challenge
posed in 1983 by Kenneth Sayre, and explains how the the Indefinite Dyad can be used to derive the square roots of 2 and 3. 相似文献
100.
Assessing Profitability Factors in the Greek Banking System: A Multicriteria Methodology 总被引:1,自引:0,他引:1
Ch. Spathis K. Kosmidou & M. Doumpos 《International Transactions in Operational Research》2002,9(5):517-530
The increasing competition in the national and international banking markets, the changeover towards monetary union and the new technological innovations herald major changes in the banking environment, and challenge all banks to make timely preparations in order to enter into the new competitive monetary and financial environment. Therefore, it is interesting to investigate the effectiveness of Greek banks, as it is valued by the financial markets, i.e. the greater the efficacy the higher the competitiveness and vice versa. Taking into consideration the bank assets, we distinguish banks into small and large ones. Finding factors that make the differences in such effectiveness may explain the effective advantage of these two types of financial institutions and help us understand the 'financial intermediation' industry in Greece better. Based on their size, a classification of Greek banks, in a multivariate environment, according to the return and operation factors for the years 1990–1999 takes place. In order to investigate the differences of profitability and efficiency between small and large Greek banks, as well as the factors of profitability and operation related with the size of banks, a multicriteria methodology has been used. The results of this paper may help us determine the key success (or failure) factors of these two categories of Greek banks as well as the responsible banking decision–makers for future readjustments. 相似文献