用朝鲜土试制卫生瓷

对朝鲜土进行了化学组成和矿物组成的研究,并用其试制卫生瓷。工艺实验表明,用朝鲜土研制的卫生瓷坯体泥料的工艺性能良好,产品的性能均符合卫生瓷质量标准规定的各项指标。朝鲜土可用作生产卫生陶瓷的原料。

Soil Properties and Yield of Jerusalem Artichoke(Helianthus tuberosus L.)with Seawater Irrigation in North China Plain

Irrigation with various dilutions of seawater can act as an alternate water resource and thus plays an important role in saving freshwater resources as well as promoting agriculture in the coastal semi-arid areas of the North China Plain. Jerusalem artichoke （Helianthus tuberosus L.） grown in a field experiment was irrigated with seawater diluted with freshwater from 2001 to 2003 to determine the feasibility of seawater irrigation in the Laizhou area. For treatments of CK （non-irrigation） along with seawater concentrations of 25%, 50%, and 75%, total dissolved solid （TDS） in the non-irrigated soil significantly increased （P ≤ 0.05） in both 2002 and 2003 and was 1.3 times higher in 2003 than in 2001. In the 25% and 50% seawater concentration treatments, TDS in 2001 was significantly greater （P ≤ 0.05） than CK; however, TDS in these two treatments decreased by 34.9% and 40.1%, respectively, in 2003 compared with 2001. The sodium adsorption ratio （SAR） remained below 10 mmol^1/2 L^-1/2, indicating that alkalization was low with seawater irrigation. In 2001 and 2002, compared to CK and the irrigation treatment with 75% seawater, irrigation with 25% and 50% seawater increased the yields of Jerusalem .artichoke. This meant that Jerusalem artichoke could be safely grown in salt-affected land of Laizhou area with 25% and 50% seawater irrigation.

Metagenomic approach revealed effects of forest thinning on bacterial communities in the forest soil of Mt. Janggunbong, South Korea

The soil microbiome that plays important ecological roles in mountains and forests is influenced by anthropogenic and natural causes.Human activity,particularly harvesting or thinning,affects the soil microbiome in forests by altering environmental conditions,such as vegetation,microclimate,and soil physicochemical properties.The purpose of this study was to investigate the effects on forest thinning on the diversity and composition of the soil bacterial community.From next-generation sequencing results of the 16S rRNA gene,we examined differences in soil bacterial diversity and community composition before and after thinning at Mt.Janggunbong,South Korea.We identified 40 phyla,103 classes,192 orders,412families,947 genera,and 3,145 species from the soil samples.Acidobacteria and Proteobacteria were the most dominant bacterial phyla in the forest soil of Mt.Janggunbong.Soil bacterial diversity measures(richness,Shannon diversity index,and evenness)at the phylum level increased after thinning,whereas species-level taxonomic richness decreased after thinning.Thinning provided new opportunities for bacterial species in Chloroflexi,Verrucomicrobia,Nitrospirae,and other nondominant bacterial taxa,especially for those not found in Mt.Janggunbong before thinning,to settle and adapt to the changing environment.Our results suggested that thinning affected the diversity and composition of soil bacterial communities in forests and mountains.

To Look at Turkish Modernization from the Korean Mirror： A Comparative Analysis

This study tries to compare the modernization of Republican Turkey and South Korea. It should be considered on two important points about the history of modernization of Republican Turkey. The first of these is mentalities and ideological attitudes of modernizing elites. The emphasis to be made is to actually point to an opposition： Republican bureaucracy, in other words, the Kemalist elites, believed that progress in the sense understood by the French revolutionaries, positivist ideas, and secular point of view, on the other hand refused to tradition, namely Ottoman-lslamic past/background. Secondly, the Kemalist bureaucracy followed a specific application of the statist economic strategy. The state on the one hand has made investments using its own resources on heavy industry, established monopoly on certain products, on the other hand has followed liberal policies in order to create a national bourgeoisie. In addition, it cannot resolve/transform land ownership regime in favor of landless peasants. The turning point in the economic development of Korea was the military government of Park Chong Hee. The main policy during the 20 years of government was self-sufficient national economy. A presidential central industrial planning board （EPC） was responsible for the planning of all new investment areas and provided policy coordination among related ministries. Government could control the allocation of all financial resources through nationalized commercial banks. Economic planning by government included resource allocation, setting export targets for big family holdings, selective support of strategic industries, and successful private companies. So, government played an important role in the accumulation of capital in the hands of selected loyal new bourgeoisie class, big family holdings （chaebols）, which helped the succession of national development projects. The government used nationalism and moderated Confucius values as a means of creating developmental spirit. Anti-industrial teachings in Confucianism has been changed by Western values to form a new development-oriented work ethics, but core teachings like paternalism, hierarchical order in groups, emphasis on education, harmony, collectivism were strengthened by national education. Government policies and modified cultural elements caused an able and willing labor force and committed nation for overcoming poverty, strengthening Korea＇s economic position in the region.