5,547 research outputs found
China, portrait of Mr. Ho Yen Sun on horseback
No full textMr. Ho Yen Sun at Chih-li at Jui-ching-huo.Possibly part of Frederick G. Clapp's traveling party.GrayscaleClapp Nitrate Negatives, Box
Coping with the rising yen: Japan's recent export experience
Full text linkDespite an appreciating yen, Japanese firms have managed to maintain strong export sales growth during the first half of the 1990s. Their strategies? Cutting the yen price of exports and shifting production to higher-value merchandise.Exports ; Japan ; Foreign exchange rates
Taiwan Version of the Prospective and Retrospective Memory Questionnaire: Latent Structure and Normative Data
No full textFei-yen wai-zhuan the true era of its birth and investigation of its author
No full textFei-yen wai-zhuan 飛燕外傳 (The Unofficial Biography of [Zhao] Fei-yen) is one of the classical-language fictions in traditional China, describing the famous romance between Emperor Cheng-di 成帝 and Zhao Fei-yen 趙飛燕 sisters in the Former Han Dynasty. The author is attributed with Ling Xüan 伶玄, who definitely had confessed that he was living with the Former Han Dynasty in his brief autobiography. However, it was too suspicious to believe, from the beginning of its appearance in the Southern Song Dynasty, scholars have been puzzled to determine the true era of its birth. Through their discussions, now it is widely accepted that Fei-yen wai-zhuan was born during the Six Dynasties, not in the Tang Dynasty, though it is still lacking in conclusive evidence. But some insist that it could be compared with the great masterpieces of Tang-tales, like Ying-ying zhuan 鶯鶯傳, Li Wa zhuan 李娃傳, Huo Xiao-yü zhuan 霍小玉傳, which belonged to the Tang Dynasty. Then should we say that Fei-yen wai-zhuan was a premature masterpiece? It still remains a great mystery to all, including its author Ling Xüan himself. This study, paying attention to the text itself, proves this tale should belong to the Tang Dynasty. Its main keywords are two, Zhen-la 眞臘 and Qi-chu Ling-hua jing 七出菱花鏡 (Water-chestnut flower shaped bronze mirror, circled by seven petals). The former, used first in the historical records in China was in the Sui Dynasty Da-ye 大業 12years(616), and the latter one likely appeared after reign of Empress Wu(690--705). These facts simply tell us Fei-yen wai-zhuan was born in the Tang Dynasty. The true author of this tale is Niu Seng-ru 牛僧孺, a famous prime minister of late Tang and was also a well-known writer of Tang-tales, who authored Xüan-guai lu 玄怪錄. We could know the close affinities between Fei-yen wai-zhuan and Xüan-guai lu. As a drafted scholar-official, all of Niu's life had been under the strife in bureaucracy with the factional parties at that time. Once the opposition party blamed Niu for violating his majesty, to write the tale Zhou Qin xing-ji 周秦行記 named Niu Seng-ru. Though its writer was anonymous, Niu was nearly accused of injury to the majesy (Lèse majesté). I contend Niu decided to write Fei-yen wai-zhuan under a pseudonym to make counterattack against a recreant writer in the same manner and to regain true pride for himself
Novel orbits of Mercury and Venus enabled using low-thrust propulsion
No full textExploration of the inner planets of the Solar System is vital to significantly enhance the understanding of the formulation of Earth and other planets. This paper therefore considers the development of novel orbits of both Mercury and Venus to enhance the opportunities for remote sensing. Continuous low-thrust propulsion is used to extend the critical inclination of highly elliptical orbits at each planet, which are shown to require very small acceleration magnitudes. Unlike other bodies in the Solar System, natural sun-synchronous orbits do not exist at Mercury or Venus. This research therefore also uses continuous acceleration to enable both circular and elliptical sun-synchronous orbits, which could significantly simplify the spacecraft thermal environment. Considerably high thrust levels are however required to enable these orbits, which could not be provided by current propulsion systems
Applying two-photon polarization and generalized polarization imaging to skin structure
No full text通過皮膚藥物的傳遞(transdermal drug delivery)是利用物理及化學方法將藥物傳送通過皮膚的一種機制，它具有諸多優點包含了可維持血液中藥物濃度的穩定、無痛、及方便性。然而，有效的將藥物傳遞通過皮膚卻十分困難，因為角質層扮演一個阻擋外來物如藥物進入的屏障，有釵h研究針對利用各種物理及化學機制增加藥物傳遞的速率，如化學增進劑、微小電流、以及大電流、光—力學波以及超音波，然而這些方法的作用機制仍然沒有全然的被了解。這個實驗中我們應用雙光子偏振及廣意義偏振影像來了解人類皮膚角質層以及真皮纖維的結構，我們發現雙光子偏振影像是一個很好的方法來研究皮膚結構的排列，而廣義偏振則可用於了解皮膚的微觀化學環境，我們證明結合偏振及廣義偏振影像可以了解油酸於通過皮膚藥物的傳遞的作用機制，我們的結果說明結合偏振及廣義偏振影像可使我們監控生物結構中物理及化學環境的變化。Transdermal drug delivery utilizes physical or chemical techniques to transport drugs across the skin. This approach has many advantages including being able to maintain a steady drug concentration in vivo, painless, and convenient. However, to efficiently delivery effective dosage of therapeutic through the skin is difficult due to the presence of the stratum corneum as the main barrier to the ingress of exogenous materials, such as therapeutic drugs. Many investigations have been performed to improve drug permeation across the skin using chemical or physical enhancement techniques: application of chemical enhancers, iontophoresis, electroporation, photomechanical wave and sonophoresis . However, the mechanisms of these techniques are not perfectly understood. In this work we demonstrate the application of multiphoton polarization and generalized polarization imaging in resolving the structures in surface stratum corneum and dermal layers in ex-vivo human skin. We found that multiphoton polarization imaging can be a powerful method in identifying structural orientations in the skin. On the other hand, multiphoton generalized polarization imaging is useful in revealing the microscopic chemical environment of the skin. We demonstrate that by combing mutiphoton polarization imaging and generalized polarization imaging, we can gain insight into the mechanism of the oleic acid enhanced transdermal drug delivery. Our results show that combined polarization and GP microscopy can be used to characterize the physical and chemical changes in biological structures.英文摘要 1
中文摘要 2
第一章 緒言
1.1研究動機及目標 3
1.2非線性顯微術顯微術發展的歷史及其應用發展 6
第二章 實驗原理及方法
2.1雙光子顯微鏡的基本原理 9
2.2雙光子顯微系統的架設 20
2.3染劑的介紹：Laurdan 25
2.4皮膚構造 32
2.5樣品製作 36
2.6光路上的調整與物鏡的選擇 38
2.7針對偏振所做的矯正 40
2.8 Saturation測試 46
第三章 實驗結果與討論
3.1皮膚角質層及真皮纖維的偏振特性實驗結果及討論 48
3.2由皮膚偏振及廣義偏振影像觀測油酸的做作
用機制之實驗結果及討論 54
第四章 結論
4.1結論 64
參考資料 6
Story of Adeline Yen Mah
No full textProducer, Eleanor Morris ; narrator, Connie Booth.Adeline Yen Mah, the author of Falling leaves, traces her and her family's life from Shanghai of the 1930s to the Cultural Revolution, through her life as a doctor in California
Exchange rates and profit margins: the case of Japanese exporters
Full text linkWhen exchange rates shift, exporters must decide whether it is more important to maintain profit margins or to maintain stable export prices. This examination of Japanese exporters finds that these firms have taken a middle course: By altering their profit margins to some degree, the exporters moderate the exchange-rate-induced changes in prices seen by their foreign customers. The analysis finds that in the three major exporting industries - industrial machinery, electrical machinery, and transportation equipment - a 10 percent rise in the yen leads firms to lower profit margins on exports by 4 percent relative to the margins on their sales in Japan. That is, the exporters pass on more than half of any change in the yen to the price seen by their foreign customers and absorb the remainder by adjusting profit margins on foreign sales.Foreign exchange rates - Japan ; Exports ; Prices ; Japan
Bandwidth Selection for Kernel Quantile Estimation
No full textIn this article, we summarize some quantile estimators & related bandwidth
selection methods & give two new bandwidth selection methods. By four distributions:
standard normal, exponential, double exponential & log normal we simulated
the methods & compared their efficiencies to that of the empirical quantile. It turns
out that kernel smoothed quantile estimators, with no matter which bandwidth selection
method used, are more efficient than the empirical quantile estimator in most
situations. And when sample size is relatively small, kernel smoothed estimators
are especially more efficient than the empirical quantile estimator. However, no one
method can beat any other methods for all distributions
Biochemical and Morphological Change in Grass Shrimp (Penaeus Monodon) Muscle Following Freezing by Air Blast and Liquid Nitrogen Methods
No full text- …
