http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Numerical Study of Coaxially Gated Ballistic Carbon Nanotube Field-Effect Transistor
Munkhbaatar Nyam-Osor,Bolormaa Dalanbayar 한국멀티미디어학회 2011 한국멀티미디어학회 국제학술대회 Vol.2011 No.-
The developments of device structure and performance metrics of carbon nanotube Feld-effect transistors (CNTFETs) are rapidly advancing. Because of the capability of ballistic transport, CNTFETs are very attractive as high-speed transistors in highly integrated carbon nanotube (CNT) based circuits. Therefore, there is always a need for device numerical simulations. In this paper, we present results of numerical simulation of a coaxially-gated, ballistic CNTFET based on a semiclassical analytical theory, which is used to examine device performance limits. The results has been obtained by numerical methods using C++ programming.
Lee, Don-Koo,Park, Yeong-Dae,Batkhuu, Nyam-Osor Korea Association For Quaternary Research 2003 제사기학회지 Vol.17 No.2
This study was conducted to examine the water use efficiency (WUE) in five species of one-year-old seedlings grown in a field nursery in Mongolia. Larix sibirica and Pinus sylvestris are the most dominant coniferous species while Ulmus pumila is an important deciduous species known well-adapted in harsh conditions such as in semi-arid forests and Gobi desert regions. Caragana arborescens (Siberian pea shrub) and Hippophae rhamnoides are N-fixing shrubs in Mongolia. Thirty one-year-old seedlings were sampled from each of the five species (a total of 150 samples) and measured for net photosynthetic rate (Pn) and transpiration rate (E). The Pn and E were used to calculate and compare the WUE of each species. Pn differed significantly among the five species (p < 0.05). However, there was no significant difference in Pn between L. sibirica and H. rhamnoides (p > 0.05). C. arborescens showed the highest Pn whereas U. pumila did the poorest. E differed significantly among the five species (p < 0.05). L. sibirica and U. pumila showed considerably lower E than other species. Thus, WUE values of coniferous species such as L. sibirica and P. sylvestris were significantly greater than deciduous or shrub species such as U. pumila, C. arborescens and H. rhamnoides (p < 0.01). It may result that conifers showed relatively high water use efficiency than deciduous or shrub trees due to their lower transpiration rates, which resulted in morphological and physiological characteristics of their leaves. This may indicate that L. sibirica and P. sylvestris can be widely used for rehabilitation works in Mongolia attributed to their dominant distributions but also their high drought-resistance properties.
State of Forests and Biodiversity Conservation in Primorsky Krai, Russian Far East
Yuri Ivanovich Man'ko,이돈구,강호상,Batkhuu Nyam-Osor 한국산림과학회 2004 한국산림과학회지 Vol.93 No.6
The vegetation and species composition of Primorsky Krai located in Russian Far East are very similar to those in the Korean Peninsula and Northeastern part of China. The forests in Zapovednik(a strictly protected federal nature reserve) are unique old-growth forests without human disturbances for more than 500 years. The objectives of this study were to identify the forest resources and to suggest strategies for conservation of biodiversity and sustainable forest ecosystem management in Primorsky Krai. The total forestland comprises 11,833.3 thousand ha and is classified into 3 botanical-geographical zones; coniferous forest, coniferous-broadleaved mixed forest and forest-steppe. The total stock volume is estimated at 1,752 million m3, of which 66% are made up of conifers such as Picea jezoensis, Abies nephrolepis, Pinus koraiensis and Larix species. The flora contains 2,589 vascular plants and the forest plays important roles in the distribution and conservation of wildlife. The strategies for biodiversity conservation are as follows: 1) To conserve endemic and rare species of plant and wildlife with special protection, 2) To preserve the unique and original forest ecosystem without any industrial and human activities, and 3) To develop the sustainable uses and management of forest resources. The cooperative researches among Northeast Asian countries shall provide more detailed information not only on species distribution but on its biological and ecological characteristics.