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Search Results: 1 - 10 of 71772 matches for " HUANG Ming-zhong "
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STRUCTURE DETERMINATION OF HYDROGENATED METALLIC GLASS Ni24.3Zr75.7H0.65
氢化金属玻璃Ni24.3Zr75.7H0.65的结构研究
HUANG SHENG-TAO,XUE HONG-YONG,CAO MING-ZHONG,WANG GEN-SHI,
黄胜涛,薛宏勇,曹明中,汪根时
物理学报 , 1987,
Abstract: The radial distribution function of hydrogenated metallic glass Ni24.3Zr75.7H0.65 was deter-mined with X-ray scattering technique to investigate the influence of hydrogcnation on the structure of metallic glass Ni24.3Zr75.7 and the local surroundings of hydrogen atoms in the struc-ture of metallic glass Ni24.3Zr75.7H0.65.
A Karyological Study of Six Species of Cleisostoma from Hainan
海南隔距兰属植物6个种的核型分析
LENG Qing-Yun,MO Rao,LUO Yuan-Hua,HUANG Ming-Zhong,DENG Xiao-Guo,WANG Jia-Bao,
冷青云,莫饶,罗远华,黄明忠,邓小果,王家保
植物科学学报 , 2009,
Abstract: 采用压片法对海南产隔距兰属植物6个种,即:大序隔距兰Cleisostoma paniculatum (ker-Gawl.) Garay、短序隔距兰C.striatum (Rchb.f.) Garay、短茎隔距兰C.parishii (Hook.f.) Garay、金塔隔距兰C.filiforme (Lindl.) Garay、尖喙隔距兰C.rostratum (Lodd.) Seidenf.、红花隔距兰C.williamsonii (Rchb.f.) Garay的染色体数目和核型进行了研究.结果如下:大序隔距兰2n=2x=38=36m+2sm;短序隔距兰2n=2x=38=2M+36m;短茎隔距兰2n=2x=38=2M+34m+2sm;金塔隔距兰2n=2x=38=38m;尖喙隔距兰2n=2x=38=36m+2sm;红花隔距兰2n=2x=38=34m+4sm(2SAT).主要由正中部着丝点区染色体组成.除尖喙隔距兰核型分类为1A型外,其他的都为1B型.
FM-AM Conversion Induced by Polarization Mode Dispersion in Fiber Systems
HUANG Xiao-Dong,WANG Jian-Jun,LI Ming-Zhong,XU Dang-Peng,LIN Hong-Huan,ZHANG Rui,DENG Ying,ZHANG Xiao-Min,ZHAO Sheng-Zhi,
中国物理快报 , 2010,
Abstract:
Croton hirtus (Euphorbiaceae), A New Alien Species from Hainan, China
中国大戟科一新归化种——硬毛巴豆
WANG Qing-long,DENG Yun-fei,WANG Zhu-nian,HUANG Ming-zhong,
王清隆,邓云飞,王祝年,黄明忠
热带亚热带植物学报 , 2012,
Abstract: 首次报道了大戟科(Euphorbiaceae)巴豆属硬毛巴豆(Croton hirtus L'Hér.)在中国的归化新记录,并提供该种的特征描述和形态图。凭证标本保存于中国科学院华南植物园标本馆(IBSC)。
Micrococca Benth., A Newly Recorded Genus of Euphorbiaceae from China
中国大戟科一新记录属——小果木属
WANG Qing-long,DENG Yun-fei,HUANG Ming-zhong,WANG Zhu-nian,YAN Xiao-xia,
王清隆,邓云飞,黄明忠,王祝年,晏小霞
热带亚热带植物学报 , 2012,
Abstract: The genus Micrococca Benth. of Euphorbiaceae is reported as newly recorded genus from China. Micrococca mercurialis (L.) Benth. was found in Hainan, China for the first time.
内蒙古巴丹吉林沙漠400年来大气沉降 Hg的湖泊沉积记录
Atmospheric Hg Deposition during the Past Four Centuries from the Lacustrine Sediment in the Badain Jaran Desert, Inner Mongolia,Northwest China
刘斯文,黄园英,张玲金,谭科艳,田明中
LIU Si-wen,HUANG Yuan-ying,ZHANG Ling-jin,TAN Ke-yan,TIAN Ming-zhong
- , 2015,
Abstract: 摘要： Hg污染具有全球性，人类活动较少地区的湖泊沉积物对长距离输入的大气沉降Hg变化敏感。巴丹吉林沙漠中发育了约142个沙漠丘间湖泊，是研究大气沉降Hg记 录的理想材料。选择巴丹吉林沙漠东南部的宝日陶勒盖湖泊进行湖泊钻探，结合210Pbuns和137Cs核素测年及THg沉积通量计算，重建了400年来巴丹吉林沙漠湖泊的THg沉积记录，并探讨了影响沙漠湖泊THg沉积的影响因素，评估了自然背景和人类活动的影响。结果表明：(1)沉积物中THg含量分布范围为1.5~17.5 ng/g，富集系数和沉积通量的分布范围分别为0.3~4.5和2.9~38.9 μg/(cm2·a)。 THg含量、富集系数和沉积通量均表现为在岩心上部近几十年富集。(2)近400年来，湖泊沉积物中背景THg(THg岩石风化)通量变化相对稳定，主要受控于附近物源供给和区域风沙活动。大气沉降THg(THg 大气)通量自20世纪30年代以来呈逐渐增加的趋势，很大程度上反映了近几十年来人为源大气沉降THg的增加。但20世纪30年代以来岩心局部的大气沉降THg通量的峰值可能还受全球变暖和湖泊生产力增加 的影响，而20世纪30年代之前出现的峰值可能与“小冰期”冷期强烈的区域风沙活动有关。巴丹吉林沙漠湖泊400年来的THg大气沉积通量变化与全球Hg产量和冰心中的大气Hg含量变化记录一致，是沙漠 地区大气沉降THg的可信纪录。
Abstract: The Hg pollution is a global problem. The lacustrine sediment in remote area is sensitive to atmospheric Hg deposition by long-distance transportation and they are ideal materials for studying atmospheric Hg cycling. The Badain Jaran Desert is located in the Northwest China where there are about 142 permanent inter-dune lakes, and lacustrine sediments from these lakes are ideal materials for study atmospheric Hg deposition in remote desert region due to less human activities. The inter-dune lake， the Baoritaolegai， in the southeast of the Badain Jaran Desert， was selected for this study. The sediment core (BR-2) was dated by 210Pbuns and 137Cs. Results derived from the sediment core BR-1 suggest that: (1) THg concentration ranges from 1.5 to 17.5 ng/g，the flux ranges from 2.9 to 38.9 μg/(cm2·a)and EF ranges from 0.3 to 4.5, respectively, and the THg content enriched in the recent decades;(2) The flux of THg in the Core BR-1 is composed of background (THglithogenic) and atmospheric fractions (THgatmospheric). The flux variety of the THglithogenic fraction during 400 years is relative stable which are controlled mainly by nearby material source supply and regional aeolian activities. Gradually increasing flux of the THgatmospheric fraction since 1930s， to a great extent， indicates the growth of anthropocentric THg in the recent decades. To the low background THg in the Badain Jaran Desert lake and the natural fluctuation affected by climate or the environmental change of the lacustrine sediment are considered. Peaks of the THgatmospheric flux occurring in the Core BR-1 after 1930s may be relating with global warming and increasing lake productivity while THgatmospheric flux changes may link with the nearby material source and aeolian activities before 1930s. Signals revealed by the 400 years’THgatmospheric flux from the inter-dune lacustrine sediment in the Badain Jaran Desert is consisting with global Hg production and a THg record from ice core from
A PRELIMINARY STUDY OF EFFECT OF SOIL WATER DEFICIT ON THE PHOTOSYNTHETIC CHARACTERISTIC OF FABA VEAN (VICIA FABA)
水分亏缺对蚕豆光合特性影响的初步研究
Xia Ming-zhong,
夏明忠
植物生态学报 , 1990,
Abstract: 本文报道了蚕豆现蕾至饱荚期不同时间土壤水分亏缺情况下的光合特性、光合产量及蚕豆水分亏缺敏感期。蚕豆现蕾后给予土壤干旱处理。光合速率、叶绿素含量、叶面积、气孔开度、生物产量及籽粒产量下降,但气孔密度和呼吸速率增加。水分亏缺使叶片光饱和点由60kLx降至30kLx,气孔开度日变化呈单峰(9—11时)曲线。始荚至盛荚朋对土壤干旱最敏感,此期是蚕豆灌水的关键时期。
THE GRADIENT VARIATION OF PHOTOSYNTHETIC ECOPHYSIOLOGY ON PLATEAU TYPE KENY RICE
高原粳稻光合生理生态的梯度变化
Xia Ming-zhong,
夏明忠
植物生态学报 , 1991,
Abstract: The light-photosynthesis and the ecophysiology responese of variouskinds of keny typical rice (Oryza sativa subap, Keng Ting) at differentaltitudes to light and temperature were investigated under field cultureand pot culture conditions. The five varieties of keny rice were used:Keng No, 10, Dao No 4, Mei Dan, 79-2 and Chu Keng No.3 altitudes of2510, 2490, 2400, 2200 and 1850m, respectively. The results indicatedall photosynthetic characteristics of keny rice varieties at different altitu-des showed apparent gradient variations. Under lower intensity of illumi-nation, the photosynthetic rate at the ear-bearing stage would graduallydecrease in Keng rice varieties along with the increase in altitude. Underhigher intensity of illumination, however, the rate would gradually incr-ease along with the increase in altitude. The relationships between phot-osynthesis of Keng rice and illumination could be determined by the cur-ve equation: p=a blgI, where p is photosynthetic rate, I is light inten-sity. The light saturation point of keng rice showed a tendency to incre-ase with the rise of altitude. The effects of shading on yield parametersof keng rice at highter altitudes were much greater than of keng rice atlower altitudes. The plateau keng rice varieties have high coldtolerancewhen different varieties exposed to low temperature at the blooming stage. The results suggested that different photosynthetic ecophysiology res-ponses to light-temperature were determined by their difference in matabo-lic pattern and adaptability to the environment.
THE EFFECT OF SHADING ON THE FORMATION AND ABSCISSION OF FLOWERS AND PODS IN THE BEAN BEFORE,DURING AND AFTER THE FLOWERING PERIOD
遮光对蚕豆花荚形成和脱落的影响
Xia Ming-zhong,
夏明忠
植物生态学报 , 1989,
Abstract: The present paper deals with the effect of shading on the formationand absoission of Vicia faba flowers and pods during the three differentperiods before, during and after flowering, the capability of yieldcompensation and the ecologicphysiologic, principle of the formation andabscission of flowers and pods. In our experiments the total number offlowers and pods was reduced in the case of shading before flowering, butthe rate of abscission was reduced. The weight of the resulting grain wastherefore significantly larger than thar of the treatment of shading of du-ring and after flowering, even larger than the unshaded plants. There wasno distinct influence on the total number of flowers of shading before flo-wering and after flowering, but the reduction of the grain yield was sign-ificantly higher than the unshaded plants. The specific leaf weight, chloro-phyll content of the leaves by the end of shading, photosynthetic produ-ction, the rate of distributing dry matter to the reproductive organs, thesugar and the nitrogen contents of plants were reduced at various stages ofshading, but at mature, the sugar and nitrogen contents and the amounts ofnutritive elements (P,K, Ca,Mg) absorbed by the grains, stems and leafwere not affected. The principal reason for flower and pod reductioncaused by shading was the decrease of the sugar-nitr ogen ratio, and notany chancre in the abundance of nutritive elements.
Dendrobium lagarum Seidenf., A Newly Recorded Species of Orchidaceae from Hainan, China
中国石斛兰属(兰科)一新记录种——广坝石斛兰
HUANG Ming-zhong,LIU Zhi-long,WANG Qing-long,HUANG Fa-xiang,YANG Guang-sui,YIN Jun-mei,MO Rao,
黄明忠,刘芝龙,王青隆,黄法祥,杨光穗,尹俊梅,莫饶
热带亚热带植物学报 , 2011,
Abstract: Dendrobium lagarum Seidenf. is reported as as a newly recorded species of Orchidaceae from China. This species resembles D. exile Schltr., but differs by unbranched zigzag stems upside; sparse leaves; base of stems not dilated to fusiform, with 7-8 uniform ribs; half sized flowers, the mid-lobe of the lip sub-triangle, column foot without a spherical callus.
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