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Objective The selection of SPE column to extract trace pesticides in the water. Methods Investigated the recovery of 6 kinds SPE column (including HLB,GDX403,GDX103,C18,C8,C6) to extract phorate, sulfotep, propoxur, carbofuran, cypermethrin, fenvalerate in the water. Results By using oasis HLB cartridge to extract 21 kinds of pesticides in water, the recoveries were over 60%for the most pesticides. Conclusion The method could be applied to the cases which extract and analyse the trace pesticides in large volume water.
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Objective To observe the effect of flapless minimally invasive technique in oral dental implants and prognosis.Methods 31 patients dental implant were collected (flapless minimally invasive group),the group planted alveolar ridge width greater than 4mm and plenty of bone.The other 31 cases patients concomitant select flapless implant dental were collected as control(flap lminimally invasive group).The clinical effect was analyzed retrospectively.Results Flapless minimally invasive surgical time was (22.88 ± 3.17)min,duration of postoperative pain (30.26 ± 8.53) h,antibiotics (32.74 ± 8.96) h,were significantly reduced compared with flap minimally invasive group(all P ＜ 0.01).Conclusion Minimally invasive flapless implant maintains the integrity of the original structure of the gum tissue and bone tissue,as well as the native conformation,which has good prognosis.However,patients with poor bone conditions in growing areas are still irreplaceable by flapless minimally invasive implantation.
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Objective: To apply fuzzy clustering analysis to determination of 10 inorganic elements and Cu/Zn ratio in 13 kinds of traditional Chinese medicine cured for vascular disease. Methods: By FAAS (flame atomic absorption spectrometry) sodium, calcium, magnesium, potassium, iron, chromium, nickel, manganese, copper and zinc were determined. By range analysis, correlation coefficients and relative fuzzy matrix were calculated.Results: Correlation coeffieients ? were mostly in the range of 0.55～0.80, especially ?=0.95 between Buzhangnaoxintong Capsule and Xinbao Pill. Conclusion: On condition that trace and macro elements are relatively rich and clustering correlation coefficients are larger, therapentic effects among traditional Chinese medicines cured for vascular disease are also similar. This suggests that trace elements, macro elements and Cu/Zn ratio have much to do with therapeutic effect.