|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | An ethnobotanical study of forage plants in Zhuxi County in the Qinba mountainous area of central China显示文摘In the Qinba mountainous area of Central China,pig farming has a significant impact on the growth of the rural economy and has substantially increased farmer incomes.Traditional knowledge plays an important role in the selection of forage plant species for pig farming by local people.This study aimed to identify the forage plants used for pig feeding and to catalog indigenous knowledge regarding their use.During 2016 and 2017,ethnobotanical surveys and inventories were conducted in Zhuxi County,Hubei Province,China.Data were collected using semi-structured interviews,key informant reports,free listings,guided field walks,and participatory observations with 77 households in 16 villages in 13 towns/townships.The obtained data were analyzed using a relative frequency citation(RFC)index.Overall,145 wild forage plants from 91 genera and 31 families were recorded.The most cited families were Asteraceae,Polygonaceae,Urticaceae,Amaranthaceae,Fabaceae,Cruciferae,Caryophyllaceae,and Lamiaceae.Whole plants(75.9%)and tender leaves(12.4%)were the most frequently used parts of the plants.Most of the forage plants were herbaceous(88.9%).Almost all forage plants could be collected throughout the year(62.7%).Raw and cooked were the two main preparation methods.The most frequently cited species were Taraxacum mongolicum,Bidens pilosa,Sonchus oleraceus,Pilea verrucosa,and Pilea pumila var.obtusifolia.A total of 14 species were identified as the top forage plants in Zhuxi County based on their RFC values(RFC value greater than 0.5).Local people possess rich traditional knowledge about the utilization and management of forage plants for pig feeding.However,the maintenance of this traditional knowledge may be seriously threatened by changes in pig feeding modes and the lack of successors.Appropriate strategies and action plans have been suggested for the conservation of traditional knowledge associated with biodiversity and the sustainable use of forage species resources.These include 1)taking targeted measures to protect forage resources and associated traditional knowledge;2)strengthening research on the forage plants with the highest RFC values for nutritional value,digestibility,other functions,and ecological status;and 3)enhancing the identification of poisonous forage plants. | Jun Yang Jifeng Luo Qiliang Gan Leiyu Ke Fengming Zhang Hairu Guo Fuwei Zhao Yuehu Wang | 2021 | Plant Diversity2021，43，3： | 3 |
| 2 | Fractal image encoding with flexible classification sets显示文摘Fractal image compression(FIC)technology is an interesting attempt at structure similarity-based image compression.It has been widely applied in many fields such as image encryption,image retrieval,image sharpening,and pattern recognition.However,overlong encoding time is the main difficulty for the application of FIC.In this paper,a new FIC speedup algorithm is proposed with two steps.Firstly,the simplified statistical variable expressions can speed up encoding twice more than the baseline fractal compression(BFC)without loss of image quality corresponding to BFC.Secondly,based on the fact that the affine self-similarity is equivalent to the absolute value of Pearson’s correlation coefficient,a new block classification strategy with flexible classification sets is proposed to speed up encoding further.The experiment results and theoretical analysis show that the proposed scheme achieves high performance in both image quality preservation and encoding efficiency. | Jianji Wang Xuguang Lan Yuehu Liu Nanning Zheng | 2014 | Chinese Science Bulletin2014，59，14： | 2 |
| 3 | Fabrication of a monolithic 4H-SiC junction barrier schottky diode with the capability of high current显示文摘There is a great interest in monolithic 4H-Si C Junction Barrier Schottky(JBS) diodes with the capability of a high forward current for industrial power applications.In this paper,we report large-area monolithic 4H-Si C JBS diodes fabricated on a 10 μm 4H-Si C epitaxial layer doped to 6×1015 cm3.JBS diodes with an active area of 30 mm2 had a forward current of up to 330 A at a forward voltage of 5 V,which corresponds to a current density of 1100 A/cm2.A near ideal breakdown voltage of 1.6 k V was also achieved for a reverse current of up to 100 A through the use of an optimum multiple floating guard rings(MFGR) termination,which is about 87.2% of the theoretical value.The differential specific-on resistance(RSP-ON) was measured to be 3.3 m cm2,leading to a FOM(VB2/RSP-ON) value of 0.78 GW/cm2,which is very close to the theoretical limit of the tradeoff between the specific-on resistance and breakdown voltage for 4H-Si C unipolar devices. | SONG QingWen YUAN Hao HAN Chao ZHANG YuMing TANG XiaoYan ZHANG YiMeng GUO Hui ZHANG YiMen JIA RenXu WANG YueHu | 2015 | Science China(Technological Sciences)2015，58，8： | 2 |
| 4 | Triterpenoids from the Resin of Styrax tonkinensis and Their Antip roliferative and Differentiation Effects in Human Leukemia HL-60 Cells 显示文摘 | Wang Feng Hua Huiming Pei Yuehu | 2006 | Nat Prod2006，69，5： | 1 |
| 5 | Studies on the chemical consitituents in Streptocaulon griffithii Hook显示文摘 | Xi Pengzhou Qi Yali Wang Yuehu | 2011 | Journal of Northwest Agriculture and Forestry University2011，39，9： | 1 |
| 6 | Parameter anal- ysis of fractal image compression and its applications in im- age sharpening and smoothing 显示文摘 | Jianji Wang Nanning Zheng Yuehu Liu | 2013 | Signal Processing : Im- age Communieatiota2013，28，6： | 1 |
| 7 | Improved empirical DC I-V model for 4H-SiC MESFETs显示文摘A novel empirical large signal direct current(DC) I-V model is presented consider-ing the high saturation voltage,high pinch-off voltage,and wide operational range of drain voltage for 4H-SiC MESFETs.A comparison of the presented model with Statz,Materka,Curtice-Cubic,and recently reported 4H-SiC MESFET large signal I-V models is made through the Levenberg-Marquardt method for fitting in nonlin-ear regression.The results show that the new model has the advantages of high accuracy,easily making initial value and robustness over other models.The more accurate results are obtained by the improved channel modulation and saturation voltage coefficient when the device is operated in the sub-threshold and near pinch-off region.In addition the new model can be implemented to CAD tools di-rectly,using for design of 4H-SiC MESFET based RF&MW circuit,particularly MMIC(microwave monolithic integrate circuit). | CAO QuanJun ZHANG YiMen ZHANG YuMing LV HongLiang WANG YueHu TANG XiaoYan GUO Hui | 2008 | Science in China(Series F)2008，51，8： | 1 |
| 8 | Winter wheat canopy interception and its influence factors under sprinkler irrigation显示文摘 | Kang Yuehu Wang Qinggai Liu Haijun | 2005 | Agricultural Water Management2005，74，： | 1 |
| 9 | Anthraquinones and Lignans from Cassia occidentalis 显示文摘 | Li Shifei Di Yingtong Wang Yuehu | 2010 | Helvetica Chimica Acta2010，93，： | 1 |
| 10 | Detection of CD2 expression in chicken hematogenic embryo yolk sac lymphoid cells prior to thymus genesis显示文摘从在舞台 16 点的小鸡胚胎的淋巴的单音的原子房间在胎儿的肝和胸腺开始以前被收集学习造血的蛋黄囊的区别和功能并且检测 CD2 是否发生在淋巴的单音的原子房间的表面上。显型和房间表面蛋白质 E 受体的功能的活动和胚胎的 E + 房间的超微结构与成熟 T 房间的那些相比。我们的结果显示在胚胎的淋巴细胞和成熟 T 房间的 E 受体之间的 99.36% 相同。另外的类似包括分子的分发,动机,形成一个红血球插座,在胚胎的淋巴细胞之间被检测并且成熟的能力,受体 ligand 建筑群的结构,和信号隧道的符合构造表示 CD2 T 房间。这些结果显示 CD2 已经在胎儿的肝和胸腺开始以前被表示并且它的表示不依赖于 thymic 微型环境。 | Dongyu Zhou Jigui Wang Weiquan Liu Rongxiu Liu Yuehu Pei | 2008 | Progress in Natural Science:Materials International2008，18，12： | 1 |
| 11 | Trit-erpenoids from the resin of styrax tonkinensis and their anti-proliferative and differentiation effects in human leukemiaHL-60 cells显示文摘 | FENG WANG HUIMINGHUA YUEHU PEI | 2006 | Journal of Natural Products2006，69，5： | 1 |
| 12 | Characterization of the heteroepitaxial growth of 3C-SiC on Si during low pressure chemical vapor deposition显示文摘3C-SiC heteroepitaxial layers were grown on Si substrates using a horizontal,hot-wall low pressure chemical vapor deposition system.The crystal quality,surface morphology and thickness uniformity of the layers were characterized by X-ray diffraction,atomic force microcopy and Fourier transform infrared spectroscopy,respectively.Growth of the epitaxial layer was determined to follow a three-dimensional island mode initially and then switch to a step-flow mode as the growth time increases. | CHEN Da ZHANG YuMing ZHANG YiMen WANG YueHu JIA RenXu | 2010 | Chinese Science Bulletin2010，55，27： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员