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Search Results: 1 - 10 of 90134 matches for " CHEN Shao-xiong "
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Approximation of Convex Functions on the Dual Spaces
对偶空间上凸函数的逼近
RUAN Ying-Ban,CHEN Shao-Xiong,
阮颖彬,陈绍雄
数学物理学报(A辑) , 2004,
Abstract: In this paper, the authors prove that for every \$w\+*\$ lower semicontinuous Lipschitzian convex function on the dual of a bistrictly convexifiable Banach space can be uniformly approximated by a sequence of \$w\+*\$ lower semicontinuous monotone nondecreasing Lipschitzian convex function with the dense very smooth point set.
Measurement of Dissipation of a Three-Level rf SQUID Qubit
Shao-Xiong Li,Wei Qiu,Zhongyuan Zhou,M. Matheny,Wei Chen,J. E. Lukens,Siyuan Han
Physics , 2005,
Abstract: The dissipation-induced relaxation (T_1) time of a macroscopic quantum system - a \{lambda}-type three-level rf SQUID flux qubit weakly coupled to control and readout circuitry (CRC) - is investigated via time-domain measurement. The measured interwell relaxation time of the qubit's first excited state, T_1=3.45+/-0.06 \{mu}s, corresponds to an effective damping resistance of the flux qubit R=1.6+/-0.1 M\{omega} which is much lower than the intrinsic quasiparticle resistance of the Josephson tunnel junction. An analysis of the system shows that although the CRC is very weakly coupled to the qubit it is the primary source of damping. This type of damping can be significantly reduced by the use of more sophisticated circuit design to allow coherent manipulation of qubit states.
Stunting and soil-transmitted-helminth infections among school-age pupils in rural areas of southern China
Yu Shang, Lin-Hua Tang, Shui-Sen Zhou, Ying-Dan Chen, Yi-Chao Yang, Shao-Xiong Lin
Parasites & Vectors , 2010, DOI: 10.1186/1756-3305-3-97
Abstract: A cross-sectional survey was carried out in the poor rural areas in Guangxi Autonomous Regional and Hainan Province where STH prevalence was higher between September and November 2009. Pupils were from 15 primary schools. All the school-age pupils aged between 9 and 12 years old (mean age 11.2 ± 3.2 years), from grades three to six took part in this study. Study contents include questionnaire surveys, physical examination and laboratory methods (stool checking for eggs of three major STH infections and haemoglobin determination was performed for the anaemia test). Finally 1031 school-age pupils took part in survey. The results showed that the overall prevalence of stunting (HAZ < 2SD) was 25.6%, based on the WHO Child Growth Standards (2007). Risk factors for stunting based on logistic regression analyses were: (1) STH moderate-to-heavy intensity infections (OR = 1.93;95%CI:1.19,3.11); (2) anaemia (OR = 3.26;95%CI: 2.02,5.27); (3) education level of mother (OR = 2.13; 95%CI: 1.39,3.25). The overall prevalence of major STH infections was 36.7%, STH moderate-to-heavy intensity infections was 16.7%. The overall prevalence of ascariasis, trichuriasis, hookworm and co-infection were 18.5%, 11.2%, 14.7% and 9.1% respectively. The prevalence of anaemic children (HB < 12 g/dl) was 13.1%.The present study showed that stunting was highly prevalent among the study population and STH infection is one of the important risk factors for stunting, with moderate-to-heavy intensity infections being the main predictor of stunting. Hence, additional interventions measures such as to promote de-worming treatment, to enhance health education and to improve hygiene and sanitation in order to reduce stunting in this population, are needed throughout the primary school age group.Although great development in socio-economic status has occurred in recent years, malnutrition and intestinal parasitic infections are still common public health problem in school-age pupils in many parts of the wor
Studies on Biomass and Energy Characteristics of Short Rotation Energy Plantations of Eucalyptus urophylla×E. grandis
短周期尾巨桉能源林生物量与能量特征研究
ZHOU Qun-ying,CHEN Shao-xiong,HAN Fei-yang,Roger ARNOLD,
周群英,陈少雄,韩斐扬,Roger ARNOLD
热带亚热带植物学报 , 2013,
Abstract: In order to development and utilization of Eucalyptus urophylla × E. grandis plantation, biomass and calorific values of 1- to 4-year-old E. urophylla × E. grandis were determined to reveal biomass and energy characteristics of Eucalyptus at different ages. The results showed that the biomass of leaves, branches, stem, roots, bark and total biomass increased with increasing age. The ratio of leaf, branch and bark biomass to total biomass decreased with age, while the ratio of stem biomass to total biomass increased. Biomass of 1- to 4-yearold individual and stands ranged from 4.32 to 66.29 kg, and 10.68 to 153.33 t hm-2, respectively. Biomass structure characteristics revealed that Eucalyptus plantation began to closure at the 4th year, and stem growth was dominant. Gross calorific values had significant difference (P<0.01) among five components, such as leaf, branch, root, stem and bark, with ranged from 17.23 kJ g-1 for bark to 20.56 kJ g-1 for leaf, those of the same component had no significant differences among different ages (P>0.05). The retained energy of 1- to 4-year-old individual and stands ranged from 81.61 to 1255.22 MJ and 201.83 to 2903.32 GJ hm-2, respectively, the change trend and orders of components were the same as biomass. Therefore, it suggested that E. urophylla × E. grandis energy plantation could manage with short rotation for 4 years.
Intraparenchymal papillary meningioma of brainstem: case report and literature review
Xiao-Bing Jiang, Chao Ke, Zhi-An Han, Shao-Hua Lin, Yong-Gao Mou, Rong-Zhen Luo, Shao-Xiong Wu, Zhong-Ping Chen
World Journal of Surgical Oncology , 2012, DOI: 10.1186/1477-7819-10-10
Abstract: Meningiomas account for nearly 35% of all primary intracranial neoplasms, deriving from the arachnoid cap or meningothelial cells [1]. Therefore, they usually display a dural attachment [2]. Unusually, they could present with no dural attachment [3-6]. The majority of the meningiomas without dural attachment are supratentorial, whereas the infratentorial ones are relatively less frequent. In reviewing the literatures, only thirteen infratentorial meningiomas without dural attachment excluding the one in the fourth ventricle have been reported, and only one case was in the brainstem [7]. Intraparenchymal papillary meningiomas of brainstem, to our knowledge, have never been reported before.Cyst formation is uncommon in the meningioma, which most commonly develops in fibroblastic and meningothelial meningiomas. Papillary meningiomas demonstrating cystic changes were reported only in five cases in previous literatures [8]. Here, we report a case of intraparenchymal meningioma of brainstem. This should be the first case of intraparenchymal papillary meningioma of brainstem, as well as the first papillary meningioma with cyst formation located in brainstem.A 23-year-old Chinese male presented with a 4-month history of progressive left upper limb and facial nerve palsy. In the month prior to admission, he was suffering from impairment of the left upper limb movement, as well as mild dysphasia. Magnetic resonance imaging (MRI) revealed a cystic-solid mass, sized 35*25*20 mm, located in the brainstem. The solid part of the tumor mainly located in the pons, while the cystic part extended to the right cerebral peduncle. The solid part manifested iso-intense on both T1- and T2- weighted imaging with homogeneous enhancement on T1-weighted gadolinium enhancement, but no dural tail sign was noted. The cystic part was shown of hypo-intense on T1-weighted imaging and hyper-intense on T2-weighted imaging (Figure 1).The patient underwent a total surgical resection of the tumor mass vi
Biomass - and energy allocation in Eucalyptus urophylla×Eucalyptus tereticornis plantations at different stand ages.
不同林龄尾细桉人工林的生物量和能量分配
ZHOU Qun-ying,CHEN Shao-xiong,HAN Fei-yang,CHEN Wen-ping,WU Zhi-hua,
周群英,陈少雄,韩斐扬,陈文平,吴志华
应用生态学报 , 2010,
Abstract: 对广东省遂溪县北坡林场1～4年生尾细桉人工林的生物量和能量进行研究.结果表明：林龄 对林分现存生物量影响极显著(P＜0\01)，1～4年生林分生物量在10\61～147\28 t ·hm-2，随林龄增加，各组分和林分的生物量均增加，叶片、枝、树皮生物量占林分 总生物量的比例逐年减小，而树干则呈逐年升高趋势.4个林龄阶段各组分生物量的分布规 律，1～2年生为树干＞枝＞树皮＞根＞叶片，3～4年生为树干＞根＞枝＞树皮＞叶片.不同 林龄各组分的平均灰分含量在0.47%～5.91%，以树皮的灰分含量最高、树干最低.各组分 的平均干质量热值和去灰分热值分别为17.33～20.60 kJ·g-1和18.42～21.59 k J·g-1，均以叶片数值最高、树皮最低.林龄对枝、树干、树皮的干质量热值及对叶 片、树干、树皮的去灰分热值有显著影响(P＜0.05)，对叶片和根的干质量热值、枝和 根的去灰分热值及植物体热值的影响不显著(P＞0.05).1～4年生尾细桉的林分能量现 存量在199.98～2837.20 GJ·hm-2，林龄对其的影响达极显著水平(P＜0、01) ，随林龄增长，各组分和林分能量现存量增加，且各组分能量分配比例的变化趋势与生物量 相同.
ORE-CONTROLLING FACTORS AND GENESIS OF THE GOLD DEPOSITS IN THE ERJIA-BUMO GOLD BELT OF WESTERN HAINAN ISLAND
琼西二甲-不磨金矿带控矿因素与矿床成因
TU Shao-xiong,
涂绍雄
地球学报 , 1993,
Abstract: The Erijia-Bumo gold belt is located in Changjiang and Dongfang Counties of western Hainan Island and is structurally situated on the Baoban rise of the Qiongzhong geosynclinal folded area. The gold belt stretched along the nor-east direction is composed of Tuwaishan, Baoban, Beiniu, Erjia and Bumo gold deposits. All of the gold deposits occur in favourable structural locations. They are long-term evolutional products of different geological functions under specified structual conditions.
ON THE TECTONIC ENVIRONMENTS AND METAMORPHIC BELTS OF THE LATE ARCHEAN DENGFENG GROUP AND TAIHUA GROUP FROM CENTRAL HENAN,CHINA
河南中部晚太古代登封群和太华群成岩构造环境和区域变质带的讨论
TU Shao-xiong,
涂绍雄
地球学报 , 1984,
Abstract: <正> 有关太古代绿岩带的构造环境和变质作用,近年来国内外都讨论得十分热烈。本文根据作者参加河南中部地区晚太古代变质铁矿研究过程中所收集的资料,对这个地区的成岩构造环境和变质带进行讨论。
A Study of the Relationship Between Serum Esterase Polymorphism and Reproductive Performance of Saba Pig
撒坝猪血清酯酶多态性与繁殖性能关系的研究 A Study of the Relationship Between Serum Esterase Polymorphism and Reproductive Performance of Saba Pig
LIAN Lin-sheng,LU Shao-xiong,
连林生,鲁绍雄LIAN Lin-sheng,LU Shao-xiong
遗传 , 1999,
Abstract: Serum esterase polymorphisms of 115 Saba pigs were investigated by using the method of vertical polyacrylamide gel electrophoresis The genotype frequency, gene frequency and heterozygosity of this locus were calculated The relationship between the serum esterase polymorphism and reproductive performance was analyzed by the least square analysis of two factors (ES genotype of boar and sow) with interaction The results demonstrated that the genotype frequency of AA, AB and BB was 0 2696, 0 5826 and 0 1478 respectively, the gene frequency of the allele A and B was 0 5609 and 0 4391 respectively The heterozygosity of this locus was 0 4926 There are significant differences (P<0 05) on litter size, litter weight at birth, litter weight at 20 days, litter size at weaning and litter weight at weaning of different genotypic sows The significant differences (P<0 05) were showed on litter size, litter size at weaning, weaning weight and litter weight at weaning of different genotypic mating combinations It indicated that the serum esterase polymorphism was expected to be the genetic marker of pig reproductive performance
Influences of temperature and light intensity on the growth and pollutant removal by Hydrilla verticillata
温度和光照对黑藻生长及净化污水效果的影响
CHEN Wen-Yin,YUAN Shao-Xiong,LI Hua-Jun,LIN Feng-Ping,LI Qing,CHEN Zhang-He,
陈文音,袁少雄,李化军,林丰平,李青,胡进民,陈章和
生态学报 , 2010,
Abstract: 研究温度和光照对黑藻（Hydrilla verticillata (Linn. f.) Royle）生长和净化污水效果的影响。结果表明在35 ℃、25 ℃的培养中黑藻生长旺盛，经过15d的培养，植株生物量显著高于5 ℃的处理（P<0.05），对总氮（TN）的去除率达到78%，对总磷（TP）的去除率达到98%；在15 ℃中黑藻生长较慢，对污水的净化效果有所下降，但对TN和TP的去除率仍达到76%和82%；在5 ℃的培养中黑藻的生长受到抑制，对TN和TP的去除率都仅为46%，显著低于15、25 ℃和35 ℃的处理（P<005）。在较高光照强度（2000—4000 lx）的培养中黑藻的生长和对污染物的去除率无显著差异，而在较低光照强度（1000 lx）下，黑藻生长量和对TN和氨态氮（NH4-N）的去除率显著降低（P<0.05）。
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