In order to reduce the impacts of industrial effluent on environment, silicon carbide hollow fiber membranes were prepared by precipitation-immersion technique and sintered at 1450 1500 °C. The characterized X-ray diffraction, their surface structure was scanning electron microscopy atomic force microscopy, pore size distribution porosity, mechanical properties, flow measurements with distilled...

Accurate assessment of extremity &hernia is often a prerequisite to the successful completion of complex arterial reconstructions. Muscle surface pH, reflecting the status of local tissue metabolism, offers a means for continuously monitoring limb perfusion. The present investigation was designed to evaluate muscle surface pH measurements in ischemic canine hindlimbs. These measurements, subjec...

A pilot scale trickling filter and secondary sedimentation are used to evaluate the feasibility of this process for the treatment of raw dairy waste. The BOD in the raw waste of 252 to 1200 mg/l is reduced 50-73% by a single stage and a further 17-55% by sedimentation tank. Treatment efficiencies are determined at various waste strengths and influent flow rates. With a loading rate of 5-12 kg B...

Hardwood KP bleaching effluents, before (influent) and after (effluent) biological treatment, were characterized and compared to identify the main bio-recalcitrant organic compounds in the effluent. The results indicate that biological treatment reduces CODcr and BOD5 by 67% and 88%, respectively. However, various bio-recalcitrant organic compounds were still retained in the biologically-treate...

BACKGROUND Vascular endothelium is covered by a glycocalyx. Damage to the glycocalyx after systemic inflammation or ischaemia/reperfusion contributes to increased vascular permeability and leucocyte adhesion. The underlying mechanisms leading to ischaemia/reperfusion-induced glycocalyx shedding are incompletely understood, in terms of lack of oxygen, absence of flow, or return of oxygen. METH...

Heterogeneity in hydraulic, physical and chemical properties of porous media can not only limit microbial dispersion but may also complicate the quantification of microbial transport processes and resultant microbial activities. The objectives of this research were to determine the potential for bacterial transport through an unsaturated soil block under transient flow conditions and to determi...

Rationale: Endothelial derived hydrogen peroxide (H2O2) is a necessary component of the pathway regulating flow-mediated dilation (FMD) in human coronary arterioles (HCAs). However, H2O2 has never been shown to be the endothelium-dependent transferrable hyperpolarization factor (EDHF) in response to shear stress. Objective: We examined the hypothesis that H2O2 serves as the EDHF in HCAs to shea...

Peracetic acid (PAA) was evaluated as an algae control agent at the City of Modesto, CA Publicly Owned Treatment Works (POTW), during the period of June 2–4, 2003. Algae have been a problem at the POTW for many years and have become an increasing problem as the POTW attempts to increase its treatment capacity. High algae levels entering the chlorine contactor cause high chlorine demand, high TS...

ammonia (nh3) and nitrite (no2) toxic chemicals which resulted from fish culture, especially in intensive fish culture systems. to evaluate the efficiency of green algae scenedesmus quadricauda in ammonia and nitrite removal from intensive fish farm effluent and also its application as suitable culture medium for s. quadricauda , effluent water samples were collected from rainbow trout farm. si...

Antibiotic-resistant bacteria are an emerging global problem that threatens to undermine important advances in modern medicine. The environment is likely to play an important role in the dissemination of antibiotic-resistance genes (ARGs) among both environmental and pathogenic bacteria. Wastewater treatment plants (WWTPs) accumulate both chemical and biological waste from the surrounding urban...