82,620 research outputs found

    Extracción de lignanos de carbón leonarditico por los metodos sosa- cloruro de sodio y run-cang sun y determinación de su actividad antioxidante

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    Este trabajo busca extraer de dicha matriz ácidos húmicos por el método de Run Cang Sun, y el método de sosa – cloruro de sodio, una vez extraídos, fragmentarlos y solubilizarlos para determinar su poder antioxidante. Ya que es conocido que una vez fragmentado los ácidos húmicos se obtienen lignanos y estos poseen grandes cualidades que prestan beneficio a la salud humana. En el presente estudio se hace una breve descripción del estado del arte, sobre los ácidos húmicos, la descripción de las características del carbón objeto de estudio; finalizando con una descripción de la metodología empleada para el desarrollo del estudio, los resultados obtenidos y las conclusiones a las que se llegó

    Yue du guan cang dang an yu jiu ji

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    Guo shi guan tai wan wen xian guan dian cang tai wan shi xiang guan dang an shu liang pang da . guan cang feng fu , wei yan jiu tai wan shi bu ke huo que zhi zhong yao fu zuo zi liao";" wei ji ji tui guang tai wan li shi wen hua , you duo wei yan jiu zhe yi guan cang shi liao yu jiu ji zuo wei su cai , zhi bi xie chu xin de , pan neng pao zhuan yin yu , jie you wen zhong shen ru qian chu zhi jie shao , xi yin geng duo du zhe jin ru tai wan shi zhi yan jiu ling y

    San Su xian sheng wen cui: qi shi juan. v.1

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    [蘇洵, 蘇軾, 蘇轍撰].綫裝, 4函.框19x14.1公分, 14行26字. 白口, 左右雙邊, 單白魚尾. 版心中鐫"三蘇文粹"及卷次, 下鐫葉次及刻工.鈐有"雲上樓", "愚齋圖書館藏", "武進盛氏所藏", "愚齋審定善本", "丙辰年查過"印.Xian zhuang, 4 han.Kuang 19 x 14.1 gong fen, 14 hang 26 zi. Bai kou, zuo you shuang bian, dan bai yu wei. Ban xin zhong juan "San Su wen cui" ji juan ci, xia juan ye ci ji ke gong.[Su Xun, Su Shi, Su Che zhuan].Qian you "Yun shang lou", "Yu zhai tu shu guan cang", "Wujin Cheng shi suo cang", "Yu zhai shen ding shan ben", "Bing chen nian cha guo" yin

    Long-run Estimates of Physical Capital in Spain, 1850-2000.

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    In this paper, new series of Spain’s capital stock and input are constructed for the last one-and-a-half centuries. Capital stock and input grew at average rates of 3.5 and 3.7 percent per year but not at a steady pace since rates accelerated dramatically during the ‘Golden Age’. Two major structural changes accompanied this process. Composition of capital stock and remuneration changed gradually as the contribution of productive capital rose while that of structures declined. Spanish economy experienced capital deepening in the long-run. Although the capital-output ratio increased over time, in phases of accelerated growth the productivity of capital rose.Capital stock and input; Spain; Capital deepening; Capital productivity;

    Huangdi nei jing su wen

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    張志聰集註.綫裝.框19.9x13.8公分, 9行20字, 小字雙行同. 白口, 四周雙邊, 單黑魚尾. 版心上鐫題名,中鐫卷次, 下鐫葉次及"善成堂"第九卷分上, 下卷.內封背頁牌記鐫"光緒癸卯善成藏板"卷一卷端題名下署"錢塘張志聰隱菴集註, 同學張文啓開之參訂, 長男張兆璜玉師校正".《靈樞經》刻書風格與《素問》不同.With: 黃帝内經素問 : 九卷 / 張志聰集註.鈐"莊兆祥印"朱, 白文各一方.Xian zhuang.Kuang 19.9 x 13.8 gong fen, 9 hang 20 zi, xiao zi shuang hang tong. Bai kou, si zhou shuang bian, dan hei yu wei. Ban xin shang juan ti ming, zhong juan juan ci, xia juan ye ci ji "Shan cheng tang"Di jiu juan fen shang, xia juan.Nei feng bei ye pai ji juan "Guangxu gui mao Shan cheng cang ban"Detailed notes in vernacular field only."Ling shu jing" ke shu feng ge yu "Su wen" bu tong.Zhang Zhicong ji zhu.With: Huangdi nei jing su wen : jiu juan / Zhang Zhicong ji zhu.Qian "Zhuang Zhaoxiang yin" zhu, bai wen ge yi fang

    Su Wenzhong gong quan ji

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    [蘇軾 ; 陳明卿訂正].綫裝, 4函.框20.2x15公分, 10行19字. 白口, 左右雙邊, 無魚尾. 版心上鐫題名及卷次, 下鐫葉次.内封題"蘇文忠公全集, 陳明卿太史訂正, 金閶寶翰樓藏版"前有項煜序.見《香港中文大學圖書館古籍善本書錄》(增訂版)(p.225)鈐"岡田真之藏書"印.Xian zhuang, 4 han.Kuang 20.2 x 15 gong fen, 10 hang 19 zi. Bai kou, zuo you shuang bian, wu yu wei. Ban xin shang juan ti ming ji juan ci, xia juan ye ci.Nei feng ti "Su Wenzhong gong quan ji, Chen Mingqing tai shi ding zheng, Jinchang Bao han lou cang ban"Qian you Xiang Yu xu.Jian "Xianggang Zhong wen da xue tu shu guan gu ji shan ben shu lu" (zeng ding ban)(p.225)[Su Shi ; Chen Mingqing ding zheng].Qian "Gangtian Zhenzhi cang shu" yin

    The Performance and Long-Run Characteristics of the Chinese IPO Market

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    We study the short-run and long-run performance of Chinese privatization initial public offerings (PIPOs), using data for 340 and 409 new issues on the Shanghai and Shenzhen Stock Exchanges respectively, from 1 January 1996 through 31 December 1997. The average market-adjusted initial return is found to be 127.31%, and the initial returns on both stock exchanges are not significantly different from each other. The average market-adjusted buy and hold return over the three years after listing is 10.26%, which is significantly different from zero at the 1% level. We then use cross-sectional analysis to explain the long-run supernormal performance of Chinese PIPOs, and find that government ownership, the offering size and the feature of belonging to a high-tech industry are the main determinants of the long-run performance. In addition, firms that perform better in the long-run tend to make more Seasoned Equity Offerings (SEOs), and the underpricing of IPOs is negatively related to their long-run performance.IPO; underpricing; long-run performance; government ownership; offering size; high tech industry; China

    The sources of long-run growth in Spain 1850-2000.

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    Between 1850 and 2000, Spain s real income increased by about 40-fold, at an average rate of 2.5 percent. The sources of this long-run growth are investigated using Jorgenson-type growth accounting analysis. We find that growth upsurges are closely related to increases in TFP. Spanish economic growth went through three successive phases. The century before 1950 was characterized by slow growth driven by factor accumulation. TFP improvements pushed up explosive growth during the Golden Age and mitigated the deceleration during the transition to democracy years (1975-86). Since the accession to the European Union Spain has experienced a dramatic productivity slowdown

    The Sources of Long-run Growth in Spain 1850-2000

    No full text
    Between 1850 and 2000, Spain’s real income increased by about 40-fold, at an average rate of 2.5 percent. The sources of this long-run growth are investigated using Jorgenson-type growth accounting analysis. We find that growth upsurges are closely related to increases in TFP. Spanish economic growth went through three successive phases. The century before 1950 was characterized by slow growth driven by factor accumulation. TFP improvements pushed up explosive growth during the Golden Age and mitigated the deceleration during the transition to democracy years (1975-86). Since the accession to the European Union Spain has experienced a dramatic productivity slowdown.
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