A new researching method on clothing comfort perception is developed.By it the skin surface temperature changes and subjective psychological perception of human body sections stimulated by the same cold stimulation ar...A new researching method on clothing comfort perception is developed.By it the skin surface temperature changes and subjective psychological perception of human body sections stimulated by the same cold stimulation are studied.With the multiple comparison analysis method the changing laws of skin temperature of main human body sections is obtained.展开更多
基金Supported by the national education ministry key research project 02107
文摘A new researching method on clothing comfort perception is developed.By it the skin surface temperature changes and subjective psychological perception of human body sections stimulated by the same cold stimulation are studied.With the multiple comparison analysis method the changing laws of skin temperature of main human body sections is obtained.
文摘目的探讨超短波(ultrashort wave,USW)对鼠断尾再植后血管危象的影响及作用机制。方法取3月龄雌性SD大鼠80只,体重232.8~289.6 g,随机分为5组。各组保留尾侧静脉、尾骨后断离鼠尾,A组结扎尾动脉;B、C、D、E组均吻合尾动脉,建立断尾再植模型。术后B组正常管理;C组立即按3.125 mL/kg剂量腹腔注射稀释的盐酸罂粟碱注射液(1 mg/mL)。D、E组立即给予局部吻合口处USW治疗(1次/d),至术后5 d,D组剂量:3档,50 mA,20 min;E组剂量:2档,28 mA,20 min。术后观察鼠尾成活情况至10 d;手术前后测鼠尾吻合口近远侧皮温差并计算术后与术前的变化值;术前从内眦及术后8 h从尾尖各采血1次检测血浆一氧化氮(nitric oxide,NO)浓度并进行比较。结果术后7 d A、B、C、D、E组鼠尾成活率分别为0(0/14)、36.4%(8/22)、57.1%(8/14)、22.2%(4/18)、75.0%(9/12),组间比较差异有统计学意义(χ2=19.935,P=0.001);E组成活率显著高于B组(P<0.05),其余各组两两比较差异均无统计学意义(P>0.05)。术前各组间鼠尾皮温差比较差异均无统计学意义(P>0.05)。术后8 h、5 d、6 d及7 d各组间比较鼠尾皮温差变化值差异均有统计学意义(P<0.05),其中术后8 h B组皮温差变化值大于D组(P<0.05);术后5 d C组大于D组(P<0.05);术后6 d A、B、C组均大于D组(P<0.05);术后7 d A、E组低于B、C组(P<0.05),D组低于B组(P<0.05);其余各组间两两比较差异均无统计学意义(P>0.05)。术前各组血浆NO含量差异无统计学意义(P>0.05)。术后8 h A、B、C组血浆NO含量显著低于D组(P<0.05),手术前后变化值A、B组显著低于D组(P<0.05);其余各组间两两比较差异均无统计学意义(P>0.05)。结论实验中大鼠断尾再植模型可行。USW治疗能提高鼠断尾再植成活率,在术后7 d内能减小皮温差,提高术后早期NO浓度,防治血管危象。