نتایج جستجو برای: kincannon model
تعداد نتایج: 2104301 فیلتر نتایج به سال:
The short- and long-term effects of oxytetracycline (OTC) on the anaerobic ammonium oxidation (Anammox) process were evaluated. The OTC inhibition of Anammox was substrate-, and especially nitrite-, dependent. The IC50 of OTC in the batch tests on an Anammox mixed culture was calculated to be 517.5 mg L(-1). The long-term effects of OTC on the Anammox process were examined in a continuous-flow ...
The possibility to introduce the exotic anammox sludge to seed the pilot-scale anammox granular reactor and its fast start-up for treating high nitrogen concentration wastewater were evaluated in this study. The reactor was started up successfully in two weeks; in addition, high nitrogen removal was achieved for a long period. Stoichiometry molar ratios of nitrite conversion and nitrate product...
The performance of the ANAMMOX process was investigated in two identical laboratory-scale multi- and single-fed upflow anaerobic sludge blanket (UASB) reactors (denoted R1 and R0) at different hydraulic residence times (HRTs) varying from 2.06 to 1.52 h and NH4(+)-N inf concentrations ranging from 70 to 266 mg L(-1). The substrate removal efficiencies of both reactors decreased as HRT decreased...
Former Census Bureau Director Charles Louis Kincannon adds very useful commentary on the general issue of statistical confidentiality. He eloquently describes how statistical confidentiality is essential to the issues of trust, data quality, and usability of official statistics. We strongly endorse his statements in this regard. We also applaud the explicit acknowledgment (footnote 1) that ther...
One of the requirements for environmental engineering, which is currently being considered, is the removal of ethylene glycol (EG) as a hazardous environmental pollutant from industrial wastewater. Therefore, in a recent study, a moving bed biofilm reactor (MBBR) was applied at pilot scale to treat industrial effluents containing different concentrations of EG (600, 800, 1200, and 1800 mg L-1 )...
فرمالدئید در بسیاری از فعالیتهای صنعتی مانند تولید چسب و رزین، کاغذ و داروسازی کاربرد دارد. سمیت این ماده برای میکروارگانیسمها سبب مطالعه کمتر روشهای بیولوژیکی هوازی برای تصفیه آن شده است. در این تحقیق، قابلیت تصفیه بیولوژیکی هوازی فرمالدئید توسط میکروارگانیسمهای راکتور بیوفیلمی با بستر متحرک (MBBR) و میکروارگانیسمهای گرانوله راکتورهای ناپیوسته متوالی با جریان رو به بالا (SBAR) در محد...
فرمالدئید در بسیاری از فعالیتهای صنعتی مانند تولید چسب و رزین، کاغذ و داروسازی کاربرد دارد. سمیت این ماده برای میکروارگانیسمها سبب مطالعه کمتر روشهای بیولوژیکی هوازی برای تصفیه آن شده است. در این تحقیق، قابلیت تصفیه بیولوژیکی هوازی فرمالدئید توسط میکروارگانیسمهای راکتور بیوفیلمی با بستر متحرک (mbbr) و میکروارگانیسمهای گرانوله راکتورهای ناپیوسته متوالی با جریان رو به بالا (sbar) در محدوده ف...
This study investigated the predictive ability of neural networks in the estimation of methane yield (MY) and effluent substrate (Se as mg/L COD) produced by two anaerobic filters, one mesophilic (35°C) and one thermophilic (55°C), which were operated to treat paper-mill wastewater at varying organic loadings. An artificial neural network (ANN) architecture was optimized to obtain a three-layer...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
To the Editor: There has recently been an explosion of interest in, and research on, the personality of opiate addicts. Individuals with substance use disorders suffer from high rates of non-substance use psychiatric disorders. A survey found axis II disorders in 90% of opiate addicts. Another survey showed that there is a relationship between opiate dependence and some particular personality p...
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