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Etch pit is a common local etch on inhaul cable. Etch pit on the surface of steel wire can produce pits and lead to the appearance of stress concentration due to geometrical discontinuity in the pits area on steel wire. After studying various stress concentration analysis techniques, it is concluded P-method is the best method suitable for the stress analysis of corrosive pits. The analysis results show that the Von. Mises stress at the bottom centre of pits and stress concentration factor in the pit first decreases and then increases with the depth increase of the pits. In the research on steel wire fatigue life, when paying attention to the maximum stress value, it still needs to consider the etch degree on steel wire section. The calculated data lay a certain foundation for the life study of inhaul cable.

In this paper the hydroxyapatite fibers reinforced chitosan nanocomposites with high hydroxyapatite dosage (70~90 wt%) were synthesized by in-situ hybridization. The semi-permeable membrane was used to control the process of hybridization and morphology of hydroxyapatite. The compositional and morphological properties of nanocomposites were investigated by FTIR spectroscopy, X-ray diffraction, and transmission electron microscopy. The results showed that the hydroxyapatite were carbonated nanometer crystalline fibers with high aspect ratio (about 25) and dispersed uniformly in the nanocomposites. The high-resolution image indicated that the growth of nano-hydroxyapatite crystallites in the chitosan matrix preferred in the c-axis. The mechanical properties of these nanocomposites were enhanced dramatically and the compressive strength increases almost to 170MPa when the hydroxyapatite content is 70 wt%. The in vitro tests indicated that the composites have high bioactivity and degradation. These properties illustrated the potential application of this kind of nanocomposites for bone tissue engineering.

A new class of triangular pyramid-shaped microparticles of puerarin and aspirin were prepared on copper substrate by using oil-in-oil microemulsion method which is simple and economical. The morphology and microstructure of the pyramid-shaped microparticles were characterised by field emission scanning electron microscopy. The results show that pyramid-shaped puerarin and aspirin, with coral reef-like morphology, resulted from the self-assemble of nanoparticles or nanorods. A possible formation mechanism was proposed and discussed.

A type of triangular pyramid-shaped microparticles of puerarin was synthesized by using oil-in-oil microemulsion approach which is simple and economical under the action of copper substrate. The pyramid-shaped microparticles would be made up of deposit of nanospheres or nanorods and have two significant characters. One is its complex surface morphology like coral reef. The other is a lot of nanopores in existence in the microparticle body. Two possible formation routes were speculated .

The Cysteamine/DNA/SWNTs-film-modified Au electrode was successfully prepared, and its electrochemical behavior is investigated by cyclic voltammetry (CV). The modified electrode exhibited a pair of stable and well-defined redox peaks, with the formal potentials (E0′ at about −0.032 V (vs. SCE) in 0.1 M pH 7.0 phosphate buffer solution (PBS). The dependence of E0′ on solution pH indicated that the direct electron transfer reaction of the Cysteamine/DNA/SWNTs film is the same electron transfer coupled with the proton participating in the reaction process. Taxol is an anticancer drug; it interacts with microtubule proteins in a manner that catalyzes the formation of microtubules from tubulin and stabilizes the resulting structures. Using the Cysteamine/DNA/SWNTs-film-modified Au electrode, we study the interaction between DNA and Taxol studied. A UV-Vis experiment is performed to confirm this interaction.

To explore the characteristics related to the quality of life and the way of response among patients with anxiety disorder in Shandong province.Case-control study was adopted, with secondary data analysis on mental disorders among adults over 18 years of age, in Shandong province. 720 patients with anxiety disorder who met the anxiety diagnostic criteria of DSM-IV, were selected from the database, according to the distributions on gender, age (±3 years of age), village or community. 720 persons without any psychiatric diagnosis were selected and served as controls, under 1 :1 paired choice. Research tools would include:General Health Questionnaire (GHQ-12),Quality of Life Questionnaire (QLQ), Simplified Coping Style Questionnaire (SCSQ), and questionnaire on general information.Scores of QLQ among patients with anxiety disorder were lower than that of the control group, with statistically significant difference(P0.01). Scores on the negative ways of coping among patients with anxiety disorder were higher than the scores of the control group, with statistically significant difference(P0.01). Regardless of gender, age, occupation, education, marriage, religious belief etc., results from the 'two factors anova-analysis' showed that the scores of QLQ among patients with anxiety disorder were still lower than the scores of the control group while the scores on negative coping were still higher than the scores of the control group.Patients with anxiety disorder and having poor quality of life outnumbered the ones from the control group, and using negative coping ways to cope with the stress events.

To research the disperse behavior of many Chinese medicine decoctions.Through the analysis of the dispersible attributes of 22 kinds of Chinese medicine decoctions including Radix Salviae Miltiorrhizae by means of turbidity, ultramicroscope and TEM, we found that a lot of nanometer particles existed in these decoctions after 4000 r/min centrifugation. Based on the model of Radix Salviae Miltiorrhizae, we analyzed the influence on the loss of effective ingredients by way of centrifugation, alcohol precipitation, flocculation and salting-out edulcoration.The removal of infinite nanometer particles from these decoctions led to the greater loss of water-soluble and fat-soluble ingredients,and the latter accounts for the major loss.Oral liquid preparation of traditional Chinese medicine is a kind of nano-pharmaceutics with nanometer particles dispersed in the water as the carriers of effective ingredients in medicine.

The best absorption location of puerarin microemulsion-in-oil in intestine parva of rat and pharmacokinetic characteristics, and the pathway of absorption and conveying of puerarin microemulsion were studied. In situ rat perfusion method was used to investigate the intestinal absorption of puerarin. Through the changes of drug concentration in blocked and unblocked lymphs, to determine the pathway of absorption and conveying. Puerarin microemulsion-in-oil can be absorbed in any part of intestine, and the K(a), P(app) of every part is ileumduodenumjejunumcolon, and the K(a), P(app) of ileum is significantly larger than that of others. The absorption rate of different concentrations is not significantly different (P0.05). The puerarin transited by gastrointestinal tract, about 36.8% is absorbed by the lymphatic channels to enter the systemic circulation and 63.2% is absorbed by the non-lymphatic channels. The best part of intestine to absorb puerarin microemulsion is ileum, and it is passive transport. The pathway of conveying is lymphoid and non-lymphoid transit.

To search for potential antitumor drugs with potent efficiency and low toxicity, a novel 1,4,7-triazacyclodecane and its platinum (II) complex were synthesized. These compounds were characterized by elemental analysis, IR, 1H NMR, 13C NMR, MS spectra, thermoanalysis and conductivity measurement. Antitumor activity study indicated these compounds had strong antitumor activity in vitro to some extent. Inhibition of human liver tumor of CA was examined by antitumor rate and growth rate, complex C showed inhibition activity on transplanting-tumor growth of CA, 12 mg x kg(-1) was as potent as cisplatin, its ID50 was 853.6 mg x kg(-1).