σ-有限测度空间的Loeb空间

本文在充分大的k-饱和非标准模型中讨论。令(X,A,μ)是一个σ-有限的测度空间,从而存在{E_n}↑A,使X=∪E_n且μ(E_n)<+∞,n∈N。对每一A∈A及n∈N,令μ_n(A)=μ(A∩E_n)。每一个有限测度空间(X,A,μ_n)相应的Loeb空间为(~*X,~*L(~*A,~*μ_n),L(~*μ_n))。     

一类非单调跳跃非线性波方程的多解

借助除去零空间的技巧,利用L-S度数理论讨论了一类具跳跃非线性项的波方程的强迫振动问题,在对非线性项不作单调假设下,给出了一个新的多解定理.     

独净治疗角化型手足癣的临床研究

目的观察独净(复方联苯苄唑液)对角化型手足癣的临床疗效.方法采用随机双肓对照法观察独净(试验组)与联苯苄唑液(对照组)外用治疗角化型手足癣的临床疗效.结果试验组瘙痒、红斑和角化的平均消失时间及消失率均优于对照组(P＜0.05).试验组真菌学清除率为93.9%,对照组真菌学清除率为74.4%,两组比较有显著性差异(P＜0.05).独净治疗角化型手足癣的痊愈率及总有效率均高于联苯苄唑液.结论独净治疗角化型手足癣临床疗效高,无明显副作用,是优于联苯苄唑液的较理想的治疗角化型手足癣的抗真菌外用药物.     

Measurement of Specific Surface Area of Ceramisite Made from River Sediment

ＩｎｔｒｏｄｕｃｔｉｏｎＡｃｔｉｖａｔｅｄＣａｒｂｏｎｉｓｕｓｕａｌｌｙｕｓｅｄａｓａｄｓｏｒｂｅｎｔｉｎｗａｓｔｅｗａｔｅｒｔｒｅａｔｍｅｎｔ.Ｉｔｉｓｈｉｇｈｌｙａｄｓｏｒｐｔｉｖｅａｎｄｅｆｆｅｃｔｉｖｅ .Ｂｕｔｔｈｅｈｉｇｈｐｒｉｃｅｒｅｓｔｒｉｃｔｓｉｔｓａｐｐｌｉｃａｔｉｏｎｉｎｗａｓｔｅｗａｔｅｒｔｒｅａｔｍｅｎｔｅｎｇｉｎｅｅｒｉｎｇ .Ｃｅ ｒａｍｉｓｉｔｅｉｓａｍａｎ ｍａｄｅｌｉｇｈｔａｇｇｒｅｇａｔｅ.Ｉｔｓｇｏｏｄｃｈｅｍｉｃａｌａｎｄｐｈｙｓｉｃａｌｓｔａｂｉｌｉｔｙａｎｄ…     

Effects of Heavy Metals on Activated Sludge Microorganism

The efforts of heavy metals on activated sludge microorganisms are reviewed. Although some heavy metals play an important role in the life of microorganism, heavy metals concentrations above toxic levels inhibit biological processes. Copper, zinc, nickel, cadmium and chromium were mostly studied because of their toxicity and widely used, regardless of single or combination. The microorganism response to these heavy metals varied with species and concentrations of metals, factors such as pH, sludge age, MLSS etc. also affect toxicity on the microorganism. The acclimation could extend the microorganism tolerance of heavy metals. The effects of heavy metals on sludge microorganisms could be described with different models, such as Sigmoidal and Monod equation. The kinetic constants are the useful indexes to estimate the heavy metals inhibition on activated sludge system. Methods to measure the toxicity and effects on microorganism community were also reviewed.     

冻季施工盖板涵基础浅埋的方法

黑河市地处我国北部边陲，气候寒冷，年最低气温达到－37℃，季冻土最大冻结深度2．5m，最小冻结深度在2．0m左右。黑河市公路处自1985年以来，对近百座盖板涵基础采取了浅埋的方法，取得了明显的经济效益。基础浅埋的措施是应用了0．5m厚的砂砾垫层，及0．6m厚浆砌块石，使涵洞形成整体式结构，这样既满足了地基承载力的要求，又防止了冻胀破坏。对基础最小埋深应用脸算结果是：弱冻胀上为1．09m，冻胀上为1．195m。一、基础埋置深度以往的小桥涵设计与施工时，为保证结构物不受地基土冻胀的影响，除地基为非冻胀性地外，基础底面均埋在最…