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Henan Province (henan + province)
Selected AbstractsLEAD ISOTOPE ANALYSIS OF TANG SANCAI POTTERY GLAZES FROM GONGYI KILN, HENAN PROVINCE AND HUANGBAO KILN, SHAANXI PROVINCEARCHAEOMETRY, Issue 4 2010J. F. CUI Through the use of MC,ICP,MS, this study analyses the lead isotope ratios of 19 Tang Sancai pottery glazes unearthed from the Gongyi and Huangbao kiln sites. According to their different lead isotope ratios, the two kilns can be grouped separately. The research also suggests that the Gongyi and Huangbao kilns are independent production centres of Tang Sancai in the Tang Dynasty. The data from the Huangbao kiln indicates that the lead in the glazes originates from the Northern China geochemical province, while the data from Gongyi kiln suggests its source as the Yangtze geochemical province. Furthermore, the results obtained for the Tang Sancai pottery indicate that the lead sources for glaze making of these two kilns were very consistent, which suggests that lead isotope analysis could be a helpful method to identify the kilns producing Tang Sancai artefacts. [source] The Paradoxes of Environmental Policy and Resource Management in Reform-Era China,ECONOMIC GEOGRAPHY, Issue 3 2000Joshua Muldavin Abstract: Over the last 5,000 years serious environmental problems,deforestation, desertification, erosion, and widespread pollution of air, land, and water,have prevailed throughout most of China, brought about by a diverse set of social and political contexts. In this paper I focus on an enduring contradiction associated with the post-1978 reforms, namely accelerated environmental resource degradation in rural areas amid unprecedented national economic growth. Declining entitlements to assets and social capital in China's rural village populations are a crucial aspect of altered state-peasant relations, as these are increasingly mediated by the market during China's transition to a hybrid economy. This has resulted in changing patterns of resource use, impacting both the environment and peasant livelihoods. A brief assessment of China's postrevolutionary environmental policy and management practices provides the context for detailed case studies in Henan Province. These examples highlight the relationship between political-economic changes and environmental policy and management. Contrary to reform rhetoric, rural peasants' embracing of reform policies does not necessarily optimize their welfare or promote sustainable use of resources. The case studies reveal alternative pathways for villages, ones that ought to be brought into the policy debate spotlight. [source] Family and segregation studies: 411 Chinese children with primary nocturnal enuresisPEDIATRICS INTERNATIONAL, Issue 5 2007QING WEI WANG Abstract Background: The aim of the present paper was to determine the incidence of primary nocturnal enuresis (PNE) among relatives of Chinese children with PNE, the inheritance pattern, and to identify the characteristics of PNE with positive family history. Methods: From July 2003 to June 2004, an epidemiological survey on PNE children was carried out by self-administered questionnaires to parents of 5,18-year-old Chinese students in Henan Province, central China. A detailed family history was recorded in order to determine the presence of familial PNE as defined as any close relative with PNE beyond the age of 5 years. Results: The response rate was 88% (10 383/11 799), and 411 children (235 boys and 176 girls) with PNE were identified. A positive family history was found in 94 families (22.87%) of 411 probands with PNE, including 48.94% of fathers, 8.51% of mothers, 6.38% of both parents, 6.38% of the siblings and 29.79% of grandfathers or (and) mothers. Among the probands the ratio of male to female was 1.3:1 excluding sex-linked inheritance. Autosomal dominant inheritance was in 14.60%, and autosomal recessive inheritance was consistent in 1.46% of families. In PNE children with positive family history, the proportion of adolescents, with associated daytime symptoms, marked PNE and seeking professional help were significantly higher than those in PNE children without positive family history. Conclusions: PNE has a significant family clustering, and all modes of inheritance can occur in different families on the basis of a formal genetic analysis. Those with positive family history often manifest marked PNE, and have daytime symptoms. [source] Purification and partial characterization of glutathione S -transferase from insecticide-resistant field populations of Liposcelis paeta Pearman (Psocoptera: Liposcelididae)ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY (ELECTRONIC), Issue 2 2009Shuang Wu Abstract Enzymes that possess glutathione S-transferase (GST) activity were purified to homogeneity by glutathione-agarose affinity chromatography from three field populations of Liposcelis paeta (Pearman). These populations were collected from Nanyang city of Henan Province (NY), Wuzhou (WZ) and Hezhou (HZ) cities of Guangxi Province, China, and had different susceptibilities to dichlorvos [LC50s of the NY (281.48,mg/m2), the WZ (285.07,mg/m2), and the HZ (243.52,mg/m2), respectively]. The specific activities of purified enzymes from these three populations increased 32.24-, 99.81-, and 42.52-fold, respectively. Kinetic analyses showed that the catalytic activity of purified GST from NY population towards GSH was much higher than the others, while WZ population reached the highest in V. SDS,polyacrylamide electrophoresis revealed that the purified GST had two subunits with a molecular mass of 23.31 and 20.43,kDa for NY, 53.14 and 20.13,kDa for WZ, and 50.79 and 19.42,kDa for HZ, respectively. The in vitro inhibition studies of GSTs indicated that three kinds of insecticides (chlorpyrifos, carbosulfan, and cypermethrin) and five metallic ions (Zn2+, Ba2+, Ca2+, Hg2+, Mn2+, and Mg2+) all possessed inhibitory effects on purified GST, and ethacrynic acid (EA, a specific inhibitor of GST) expressed inhibitory effects. In the bioassay, three populations of L. paeta had different susceptibilities to different insecticides, even after they were reared on diets consisting of 25% EA. The GST activities of L. paeta from different areas also showed different temperature and pH stabilities. The differences in GST among the three populations may be attributed partially to the differences in control practices for psocids between Henan and Guangxi Provinces. © 2009 Wiley Periodicals, Inc. [source] A New Sauropod Dinosaur from the Late Cretaceous Gaogou Formation of Nanyang, Henan ProvinceACTA GEOLOGICA SINICA (ENGLISH EDITION), Issue 2 2009Xingliao ZHANG Abstract: A new sauropod dinosaur Baotianmansaurus henanensis gen. et sp. nov. from the Cretaceous Gaogou Formation of Neixiang, Henan Province is erected. It is characterized by somphospondylous presacral vertebrae; a highly-developed lamina system on the dorsal vertebrae; transverse process supported by four laminae; and the dorsal portion of the anterior centroparapophyseal lamina is bifurcated, with a small branch extending to the ventral surface of the prezygapophysis. It represents a new titanosauriform sauropod. [source] Mangshan Loess in Central China and the Paleomonsoon Variations since the Last InterglaciationACTA GEOLOGICA SINICA (ENGLISH EDITION), Issue 3 2004JIANG Fuchu Abstract, The Mangshan Yuan is a loess platform on the southern bank of the Yellow River, which is located in northwestern Zhengzhou of Henan Province, China. The typical Zhaoxiayu section of the Mangshan Yuan preserves stratigraphical loess units above S10 with a total thickness of 172.1 m, which includes 15.7 m of the last interglacial paleosol S1, 77.3 m of the last glacial loess L1 that consist of 41.6 m of the late stade L1LL1, 13.2 m of the interstade L1SS1 and 22.5 m of the early stade L1LL2. Based on the age marking points by correlating magnetic susceptibility of the section with the SPECMAP curve, the timescale of the section was constructed, and the average accumulation rate and the resolution of each loess strata over the S2 were subsequently calculated using the susceptibility age model. The results indicate that strata units developed in the glacial, interglacial stages, stadial and interstadial show substantial differences in grain size, average accumulation rate and time resolution ub the Zhaoxiayu section. Specifically, the average accumulation rate of the loess L1LL1 is 3.45 mm/a, whereas that of paleosol S1 is only 0.28 mm/a. Based on the high-resolution records of magnetic susceptibility and >45 ,m fraction percentage of the loess-paleosol, the summer and winter monsoon variations as well as their interrelations since the last interglaciation have been discussed, which were correlated with the SPECMAP and the GRIP climate records. [source] Petrographic and SHRIMP Studies of Zircons from the Caledonian Xiongdian Eclogite, Northwestern Dabie MountainsACTA GEOLOGICA SINICA (ENGLISH EDITION), Issue 4 2000JIAN Ping Abstract The Xiongdian eclogite occurring in the Sujiahe tectonic mélange zone at Luoshan County, Henan Province, in the western Dabie Mountains, is typical high-pressure (HP)-ultrahigh-pressure (UHP) and medium-temperature eclogite. The occurrence, internal texture and surface characteristics of zircons in eclogite were studied rather systematically petrographically combined with the cathodoluminescence (CL) and scanning electron microscope (SEM) methods. Zircons are mainly hosted in garnet and other metamorphic minerals with sharp boundaries, have a multifaceted morphology and are homogeneous or exhibit a metamorphic growth texture in the interior, thus indicating that they are the product of metamorphism. SHRIMP analyses give zircon 206Pb/238U ages of 335 to 424 Ma and show a certain degree of radiogenic Pb loss; therefore it may be inferred that the age of 424±5 Ma represents the minimum age of a HP-UHP metamorphic age. From the above analyses coupled with previous Sm-Nd, 40Ar- 39Ar, U-Pb and 207Pb/206Pb age data, it is suggested that the peak metamorphic age of the Xiongdian eclogite should be between 424 and 480 Ma. This study further validate the view of the existence of a Caledonian HP-UHP metamorphic event in the western Dabie Mountains. [source] Bed-wetting in Chinese children: Epidemiology and predictive factors,NEUROUROLOGY AND URODYNAMICS, Issue 4 2007Qing Wei Wang Abstract Aims To estimate the prevalence and severity of bed-wetting in 1,18-year-old Chinese children. Materials and Methods A cross-sectional study of bed-wetting was performed by using 13,515 self-administered questionnaires distributed to the parents of 1,18-year-old Chinese children in Henan province. The prevalence of bed-wetting was determined. The relationship of wetting to age, gender, community characteristics (rural or urban), arousal dysfunction, associated day-time symptoms (frequency, urgency, and incontinence), and family history were analyzed. Results There was a response rate of 87% (5,978 boys and 5,786 girls). The overall prevalence of bed-wetting was 23.03% in those aged 1,4, 5.66% in those 5,12, and 1.37% in those 13,18. When a logistic regression analysis was applied to determine risk factors for the bed-wetting, a positive relationship was seen with male gender and living in rural areas. Further, living in rural areas, arousal dysfunction, and associated day symptoms were significantly related to more severe bed-wetting. Only 3.64% of the children had undergone professional evaluation. Conclusion The prevalence of bed-wetting is significant in Chinese children, but lower than in most western countries, which is likely due to cultural differences. Living in rural areas, having arousal dysfunction, and having associated day-time symptoms may be predicative factors for marked bed-wetting. Neurourol. Urodynam. 26:512,517, 2007. © 2007 Wiley-Liss, Inc. [source] Distribution and underground habitats of cave-dwelling bats in ChinaANIMAL CONSERVATION, Issue 4 2007H. Niu Abstract To understand the distribution and relative abundance of cave-dwelling bats and to identify those sites that would be important for conservation of bat species, 25 underground sites that had not been previously surveyed were investigated in this 3-year study (from December 2003 to April 2006) in Funiu Mountain of Henan province, China. Approximately 80 000 bats were recorded, representing 12 species. The most abundant species were Rhinolophus affinis, Miniopterus schreibersi and Hipposideros pratti. The roosts were evaluated for their conservation importance. The most important sites in the area are Yunhua and Nanzhao caves, which serve as hibernaculums and nursery roosts to c. 13 740 and 11 803 bats, respectively, representing seven species. By means of cluster and correspondence analysis, the distribution of bat species was different between the two sides of the mountain and was highly dependent on the size of the cave. The underground sites in the south region hosted c. 80% of the total bats, representing 11 species. The sites in the north region hosted 20% of the total bats, representing seven species. Presently, none of the caves in the region has adequate protection and some bat populations are under serious threat. Many large caves that contained large bat populations and several species of concern had been developed as tourist sites, and so some advice on protecting the most important local habitats was sought based on the assessment of the conservation status of underground sites. This paper presents basic data concerning the distribution of cave-dwelling bats and the patterns of cave use on Funiu Mountain. The data will help local governments and policy-makers develop suitable strategies to promote local tourisms while protecting important habitats of animal species. [source] | |||||||||||||