Research on the Shale Reservoir Sensitivity by Using the Mineral Analysis Method.

Shale reservoirs have diverse mineral types, and analyzing the sensitivity of the mineral composition to shale pores is of great scientific and engineering significance. In this paper, first, X-ray diffraction (XRD) experiments on shale mineral compositions are carried out, and the characteristics of pore structure changes after shale mineral compositions interacted with external fluids (slick water and backflow fluid) are elucidated. Then, the effects of quartz, kaolinite, and pyrite on the pore structure and permeability of shale on the susceptibility to slick water are studied.

[An optimized method for embedding undecalcified mouse tibias in plastic blocks].

Objective: To optimize the method for embedding multiple undecalcified mouse tibias in plastic blocks, improve the efficiency and stability of plastic embedding and reduce the detachment rate of plastic slides.

Methods: Thirty undecalcified tibias from 15 B6 mice were used for plastic embedding after calcein labeling, fixation, dehydration and infiltration. The tibias were embedded in cylindrical plastic blocks with a diameter of 4 mm.

[Expression of vasoactive intestinal peptide in peripheral blood of children with hand, foot and mouth disease].

Objective: To investigate the expression of vasoactive intestinal peptide (VIP) in peripheral blood of children with hand, foot and mouth disease and its significance.

Methods: According to the condition of the disease, 86 children with hand, foot and mouth disease were classified into phase 1 group (19 children) and phase 2 group (67 children). ELISA was used to measure the concentrations of plasma VIP, interferon-γ (IFN-γ), and interleukin-4 (IL-4) in peripheral blood.

[A descriptive study on the smoking pattern among general population in Xuzhou, 2008.].

Objective: To understand the prevalence of smoking in different sub-populations in Xuzhou area so as to develop effective tobacco control policies.

Methods: Through multi-stage randomized cluster sampling, a face-to-face study with standard questionnaire was carried out among residents aged above 15 years, from June to December 2008, with descriptive nature.

Results: Totally, 44 686 people, with 21 524 males and 23 162 females at age 15 and over were investigated, including 34 391 of them from rural areas and 10 295 from the urban population.