Since 1970s, illegal immigrants have become a hot topic in the US with the increase of number of illegal immigrants, Congress passed Immigration Reform and Control Act of 1986 （IRCA）. IRCA is the first legislation t...Since 1970s, illegal immigrants have become a hot topic in the US with the increase of number of illegal immigrants, Congress passed Immigration Reform and Control Act of 1986 （IRCA）. IRCA is the first legislation towards illegal immigration, which is very important in immigration history. Does this legislation work？ What＇s the role of Congress in controlling illegal immigration and what＇s the lesson from IRCA？ In a short term, IRCA worked. It deterred illegal immigrants and the number of illegal immigrants was on the decline, but in the long run, it failed. From the perspective of decision-making, the role of Congress was not powerful because of the influence of interest groups. Therefore, Congress should be more powerful in the future.展开更多
From 1983 to 1986, the Anyang MunicipaI Archaeological Team excavated 34 tombs of the Shang Dynasty at the site to the north of Liujiaczhuang Village in Anyang city. All are eathen shaft tombs, most of them have coffi...From 1983 to 1986, the Anyang MunicipaI Archaeological Team excavated 34 tombs of the Shang Dynasty at the site to the north of Liujiaczhuang Village in Anyang city. All are eathen shaft tombs, most of them have coffins and waist pits and are extended supine position burials. The grave goods are 211 pieces and some bronze vessels unearthed from the tomb M1 , M2 and M9 have valuable inscriptions. The discovery has provded new infomation for the study of family graveyard and muitiple burials tombs of the Shang Dynasty.展开更多
In this paper the advances in gas chromatography devoted by chinese scientists in China, were described. This review is divided 3 parts. The first part contains 1. A brief description of advances of gas chromatography...In this paper the advances in gas chromatography devoted by chinese scientists in China, were described. This review is divided 3 parts. The first part contains 1. A brief description of advances of gas chromatography 2. An dvances of gas chromatograph 3. Gas chromatographic stationary phases and column technology. 4 Analysis of volatile components in Chinese traditional medicine.展开更多
文摘Since 1970s, illegal immigrants have become a hot topic in the US with the increase of number of illegal immigrants, Congress passed Immigration Reform and Control Act of 1986 （IRCA）. IRCA is the first legislation towards illegal immigration, which is very important in immigration history. Does this legislation work？ What＇s the role of Congress in controlling illegal immigration and what＇s the lesson from IRCA？ In a short term, IRCA worked. It deterred illegal immigrants and the number of illegal immigrants was on the decline, but in the long run, it failed. From the perspective of decision-making, the role of Congress was not powerful because of the influence of interest groups. Therefore, Congress should be more powerful in the future.
文摘From 1983 to 1986, the Anyang MunicipaI Archaeological Team excavated 34 tombs of the Shang Dynasty at the site to the north of Liujiaczhuang Village in Anyang city. All are eathen shaft tombs, most of them have coffins and waist pits and are extended supine position burials. The grave goods are 211 pieces and some bronze vessels unearthed from the tomb M1 , M2 and M9 have valuable inscriptions. The discovery has provded new infomation for the study of family graveyard and muitiple burials tombs of the Shang Dynasty.
文摘In this paper the advances in gas chromatography devoted by chinese scientists in China, were described. This review is divided 3 parts. The first part contains 1. A brief description of advances of gas chromatography 2. An dvances of gas chromatograph 3. Gas chromatographic stationary phases and column technology. 4 Analysis of volatile components in Chinese traditional medicine.
