Prices of Apartments in Relation to Noise Level in Poland

Acoustic climate of a given area ought to be a factor of considerable significance in investment processes in an urbanized area, especially in a residential real estate market, due to its extensive influence on the living standards of its inhabitants. In the following article, the authors have given an analysis of the residential market of housing units located in areas of acceptable and excessive noise levels in preselected regions of Poland. With this end in view, an entirely new source of information has been used in the research--an acoustic map which has been defined and applied to produce the outcome of the analysis. It allowed for the recognition of whether or not the noise level influences decisions made by investors existing in a local residential real estate market.

广谱机械力敏感离子通道抑制剂钌红调控眼压的实验研究

目的研究广谱机械力敏感离子通道抑制剂钌红对眼压的调控作用。设计实验研究。研究对象人原代小梁网细胞、C57BL/6J小鼠(2月龄)10只。方法分离培养人原代小梁网细胞,通过细胞形态和免疫荧光技术鉴定细胞类型;利用膜片钳技术记录机械力刺激下小梁网细胞机械力敏感电流的变化,并观察广谱机械力敏感离子通道抑制剂钌红对电流的抑制作用;将10只小鼠随机分为2组(每组5只):第1组(对照组)小鼠双眼前房内分别注射2 μl生理盐水,第2组(钌红组)小鼠双眼前房内分别注射2 μl 20 μM钌红。注射前日测量基础眼压,注射后每日测量眼压,并于注射12天后在小鼠每眼的前房设定15、25、35 mmHg压力下各灌注15 min生理盐水的方式测量房水流畅系数及注入速率。主要指标机敏电流(pA)、眼压(mmHg)和房水流畅系数(μl/min/mmHg)。结果钌红组给药后机械力敏感电流(-67.6±30.2pA)显著低于给药前(-309.7±65.9pA)(P=0.003);注射10天后,钌红组眼压为(14.67±2.11)mmHg,低于生理盐水组(17.85±3.66mmHg)(P=0.0604);注射12天后,钌红组房水流畅系数(0.01058±0.00236 μl/min/mmHg)明显低于生理盐水组(0.00324±0.00135μl/min/mmHg)(P=0.0273);灌注压为15mmHg时,钌红组注入速率(0.37±0.15μl/min)高于生理盐水组(0.28±0.05μl/min)(P=0.6278)。结论钌红有效抑制人小梁网细胞机械力敏感电流,降低小梁网房水引流功能;同时,钌红也可有效抑制房水生成速率,为青光眼治疗提供新思路。