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Based on constant rate mercury injection experiment, casting thin section identification, scanning electron microscope observation, clay mineral X-ray and rock specific surface area analysis, the controlling factors of matrix acidizing potential of low-permeability sandstone reservoir in fault depression lacustrine basin were determined from three aspects: pore filling, throat filling and pore-throat combination characteristics. It is concluded that provenance controls the plane partition of reservoir pore fillings. Burial depth controls the longitudinal zoning of key filling material in reservoir throat. The difference of rock structure in sedimentary facies - microfacies controlling zone leads to the change of pore-throat assemblage pattern. The matrix acidizing scheme of low permeability sandstone reservoir in fault depression basin can be formulated according to the law of “provenance zoning, buried depth zoning and being controlled by microfacies in zone”, and the implementation scheme of pre-acid, main acid and post-acid can be put forward respectively. This method can effectively promote the integration process of exploration and development of low permeability clastic reservoir in mature exploration area.

With the progress of engineering technology, the ability of design and construction has been significantly improved, which the number of long-span construction and long-span Bridges and long-span steel structures are increasing more and more. As the main supporting members of Bridges and steel structures, the quality assurance of rectangular reinforced concrete independent columns is particularly important. In the implementation process of No.18 Maintenance Hangar Project of GAMECO Aircraft Maintenance Facility Phase III in Guangzhou Baiyun International Airport of China Southern Airlines, through research and practice, our company applied the subsection construction technology of super high section rectangular concrete independent columns, which can not only guarantee the quality and forming effect of the column body, but also reduce the input of formwork materials. Improve the utilization rate of formwork and scaffold effectively, and then reduce the input of turnover materials, and achieve remarkable results.

To study the protective effects of flavonoid and polyphenol (FP) from lotus leaf on the damage induced by N2O4 in mice. Constructing an animal damage model through exposing mice to 45μl N2O4 in a 120 L sealed cabinet for 30 minutes. ICR male mice were randomly divided into normal group, physiological saline+N2O4 group,1.25g/kgFP +N2O4 group, 2.50g/kgFP + N2O4 group, 3.75g/kg FP +N2O4 group. 1.25, 2.50, 3.75 g/kg FP were orally administered to mice respectively for 5 days, equal volume physiological saline for normal group and physiological saline+N2O4 group. Then, the three FP groups and the physiological saline+N2O4 group were exposed to N2O4 in the cabinet on 5th day. In an hour after N2O4 exposure, killing the mice by dislocation to measure the SOD, GSH-Px activity and MDA content in lung tissue, checking pathology change in lung tissue slice. Results were shown: the 1.25, 2.50g/kg FP increased SOD (U/mg pro) by 30.3% and 24.4%, GSH-Px (U/mg pro) by 77.4% and 60.9%, respectively. Pathological observation of lung tissue showed that three FP groups had lighter damage than the physiological saline+N2O4 group. So, FP has significant protective effects on damage caused by N2O4 in mice.

Abstract A joint analysis of five paternal half-sib Holstein families that were part of two different granddaughter designs (ADR- or Inra-design) was carried out for five milk production traits and somatic cell score in order to conduct a QTL confirmation study and to increase the experimental power. Data were exchanged in a coded and standardised form. The combined data set (JOINT-design) consisted of on average 231 sires per grandsire. Genetic maps were calculated for 133 markers distributed over nine chromosomes. QTL analyses were performed separately for each design and each trait. The results revealed QTL for milk production on chromosome 14, for milk yield on chromosome 5, and for fat content on chromosome 19 in both the ADR- and the Inra-design (confirmed within this study). Some QTL could only be mapped in either the ADR- or in the Inra-design (not confirmed within this study). Additional QTL previously undetected in the single designs were mapped in the JOINT-design for fat yield (chromosome 19 and 26), protein yield (chromosome 26), protein content (chromosome 5), and somatic cell score (chromosome 2 and 19) with genomewide significance. This study demonstrated the potential benefits of a combined analysis of data from different granddaughter designs.