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تعداد نتایج: 75596 فیلتر نتایج به سال:
Phylogeography and conservation genetics of the rare and relict Bretschneidera sinensis (Akaniaceae)
Bretschneidera sinensis, a class-I protected wild plant in China, is a relic of the ancient Tertiary tropical flora endemic to Asia. However, little is known about its genetics and phylogeography. To elucidate the current phylogeographic patterns and infer the historical population dynamics of B. sinensis, and to make recommendations for its conservation, three non-coding regions of chloroplast...
BACKGROUND There was no large-scale population survey on the prevalence of short stature in Anhui province yet. To further acquainting the epidemiological character of teenage children short stature in Anhui province, and to provide basis for exploring reasonable intervention measure about children's height, we took this survey on short stature in primary and middle school students of Anhui pro...
On the basis of the pre-research of index system of province initial water rights allocation system, as well as the complexity and differences of the allocation system, the index system of province initial water rights allocation system in this paper is comprehensively designed first, and the index framework divided into three layers of target, criteria and index angles is established. Taking a...
The first collection of unengorged and fully engorged larvae of Nuttalliella sp. (N. namaqua?) from the murid rodents Micaelamys namaquensis, Aethomys chrysophilus and Acomys spinosissimus in Limpopo Province and from M. namaquensis in the Northern Cape Province, South Africa, is documented. A total of nine larvae were collected from two M. namaquensis in the Soutpansberg mountain range in t...
Objectives: Association of silica with diseases like cancers has been determined previously. This study was designed to determine the quantity of silis in flour produced in Golestan province and its relation to the esophageal cancer. Methodology: We took flour samples from all flour mills in Golestan province. Base-melting method in nickel cruise was used in 550°c; the extract was reduced with ...
BACKGROUND Childhood cancer is relatively uncommon and the European age-standardized rate was 164 new case per million per year among children 0 to 14 years of age (95 % CI 158-170). Aims of our study are to evaluate the cases of these malignant diseases observed between 0 and 15 years of age in the Campania region between 1990 and 2014, the ration between observed and expected cases by disease...
The prevalence and economic importance of bovine fasciolosis in Kenya--an analysis of abattoir data.
A retrospective study covering a period of 10 years (1990-1999) was carried out using post mortem meat inspection records at the Veterinary Department Headquarters at Kabete to determine the prevalence and economic importance of bovine fasciolosis in Kenya. Meat inspection records from abattoirs in 38 districts distributed over seven out of the eight provinces of Kenya were examined. Prevalence...
Four to 10 Dorper sheep on each of 12 farms in the Cape Province and 3 farms in the Orange Free State were examined for adult ixodid ticks at approximately 2- to 4-weekly intervals over periods varying from 4 to 18 months, commencing during January, February or April 1989. The farms in the Cape Province were located in the north-west, south-west and south of the province. Those in the Orange Fr...
BACKGROUND Phyto-therapy studies on Chimborazo province in Ecuador are really limited. This area, located within the Andes, is considered a millenarian and intercultural province, where multiples cultures and ethnic groups coexist. MATERIALS AND METHODS The study was conducted through direct interviews with 84 ancestral healers from the Province of Chimborazo, Ecuador. RESULTS We presented ...
The spatial variation of local economic policies in Zhejiang province from the 1950s to 1990s can be traced back to the communist revolution prior to 1949. We argue that the revolutionary history shaped the informal power configurations at the county level in Zhejiang province, which in turn determined the attitudes of local officials toward capitalist developments in both the Maoist and reform...
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