Doping effect on the physical properties of CaPtAs(FeAs) single crystals.

CaPtAs(FeAs) is a unique parent compound for superconductivity, which consists of both semiconducting PtAs and metallic FeAs layers. We report the observation of superconductivity induced via chemical doping in either Ca site using rare-earth (RE) elements (RE  =  La, Gd) or Fe site using Pt. The interlayer distance and the normal-state physical properties of the doped system change correspondingly.

[Expression of Proteus mirabilis polyphosphate kinase and preparation of its polyclonal antibodies].

Objective: To express and purify polyphosphate kinase (PPK) from Proteus mirabilis and prepare the polyclonal antibody against PPK.

Methods: The antigenicity and hydrophobicity of PPK were analyzed using software. The N-terminal conservative sequence containing 309 amino acids was selected as the target peptide, and its corresponding gene sequence with modification based on prokaryotic cells-preferred codon was synthesized and inserted into plasmid pET28b(+).

Involvement of polyphosphate kinase in virulence and stress tolerance of uropathogenic Proteus mirabilis.

Proteus mirabilis (P. mirabilis), a gram-negative enteric bacterium, frequently causes urinary tract infections. Many virulence factors of uropathogenic P.

[Changes of biological behavioral of E. coli K1 after ppk1 gene deletion].

Objective: To study the changes in biological behaviors of meningitis E. coli K1 strain E44 after deletion of polyphosphate kinase 1 (ppk1) gene and explore the role of ppk1 in the pathogenesis of E. coli K1-induced meningitis.

[Impact of pesticide use on the density of Anopheles anthropophagus and malaria incidence].

Objective: To investigate the impact of the application of chemical pesticides on the distribution of Anopheles anthropophagus in rice fields and the malaria incidence.

Method: Twenty-four villages from 16 counties in the provinces of Zhejiang, Sichuan and Guangxi were chosen for the surveys in the period of 1983-1987. For the survey of An.

[Stabilities of two kinds of Plasmodium antigen substrate slides under different storage temperatures and time].

Objective: To observe and compare the inspection effects of antigen substrate slides of Plasmodium cynomolgi (P. c) and Plasmodium falciparum (P. f) on the malaria antibody titer under different storage temperatures and time.

Vector capacity of Anopheles sinensis in malaria outbreak areas of central China.

Background: Both falciparum and vivax malaria were historically prevalent in China with high incidence. With the control efforts, the annual incidence in the whole country has reduced to 0.0001% except in some areas in the southern borders after 2000.

Anopheles pseudowillmori is the predominant malaria vector in Motuo County, Tibet Autonomous Region.

Background: Malaria is endemic in Linzhi Prefecture in the Tibet Autonomous Region (TAR), but the vector for malaria transmission had never been identified.

Methods: Adult Anopheles spp. were collected in Motuo County, Linzhi Prefecture on the Sino-Indian border in July and August, 2007.

[Species identification of Anopheles maculatus complex in malaria endemic area Motuo County, Tibet].

Objective: To identify the species of Anopheles maculatus complex in malaria endemic area Motuo County, Linzhi Prefecture, Tibet Autonomous Region.

Methods: 5190 adult mosquitoes were morphologically identified as An. maculatus complex, and 575 were randomly selected to extract DNA by phenol-chloroform method.

[Investigation on malaria transmission vectors in Motuo County, Tibet Autonomous Region].

Objective: To investigate the malaria transmission vectors in Motuo County of Linzhi Prefecture, Tibet.

Methods: Three natural villages with higher malaria incidence rate in Motuo County were selected for the study in July and August, 2007. The anopheline mosquitoes were collected by overnight/semi-overnight trapping indoor and outdoor with human and cattle baits, overnight trapping with ovitrap lights in human dwellings and cowsheds, and by searching in human dwellings in the early morning.