Research on microbiological groundwater quality was conducted in Chile in a rural watershed that has almost no other water source. Forty-two wells were randomly selected and levels of indicator bacteria total coliforms (TC), fecal coliforms (FC), and fecal streptococci (FS) were repeatedly measured during the four seasons of 2005. The aim of this study was to characterize microbiological ground...

This paper presents some aspects related to the issues of aggregating economic indicators. Departing from the research of Gh. Paun (1983) we will prove a theorem which states that under certain, natural assumptions, it is impossible to obtain an optimum aggregation. Unlike the original work of Paun, in this paper we are giving a rather simple proof of this theorem.

The validity of the Michaelis-Menten-Briggs-Haldane approximation for single enzyme reactions has recently been improved by the formalism of the total quasi-steady-state approximation. This approach is here extended to fully competitive systems, and a criterion for its validity is provided. We show that it extends the Michaelis-Menten-Briggs-Haldane approximation for such systems for a wide ran...

In December 2003, seventeen years after the first UK research assessment exercise, Italy started up its first-ever national research evaluation, with the aim to evaluate, using the peer review method, the excellence of the national research production. The evaluation involved 20 disciplinary areas, 102 research structures, 18,500 research products and 6,661 peer reviewers (1,465 from abroad); i...

Ameisen: Die heimliche Weltmacht (Ants: Nature's Secret Power) is a nature documentary about ants. Wolfgang Thaler wrote, filmed, and directed the film, which focuses on the work of ant researcher Bert Hölldobler. The 2004 film was produced by Adi Mayer Film for Österreichischer Rundfunk (Austrian Broadcasting), a public service broadcaster headquartered in Vienna, Austria. Ants: Nature's Secre...

Pollution of surface waters with coliform bacteria having antibiotic and heavy metal resistance has become an increasing public health risk. For this reason, profiles fecal microorganisms in water samples collected from two different points (Seve Dam Konak Pond, Kilis, Turkey) were analyzed study. The various physicochemical parameters such as pH, Temperature, Total Dissolved Solids (TDS), Elec...

ABSTRACT Wastewater treatment system by activated sludge, the purification of organic matter specific heterogeneous microorganisms, occurs in presence oxygen aeration tanks. The analysis microfauna present sludge is an important indicator performance and efficiency system. Considering this importance, objective work was to identify microorganisms which are part tank effluent plant a soybean pro...

ABSTRACT The aim of this study was to evaluate the influence different periods pre-slaughter fasting (F1: 2 24 hours and F2: 48 72 hours) on counts hygiene indicator microorganisms presence Salmonella spp. in carcasses bullfrogs. Two stages slaughter process were analyzed: after bleeding (A) final cleaning (B). Samples from each period analyzed count (n=30) (n=140). For aerobic mesophilic micro...

Grand Bay National Estuarine Research Reserve (NERR) is an important ecosystem in the Mississippi Gulf Coast. It serves as important nursery areas for juveniles of many species of fish. The bay is also used for fishing, crabbing, oyster togging, boating as well as recreation. Like in other aquatic environments, this bay may be contaminated by microorganisms including pathogenic bacteria. The ob...

today oil removal from contaminated soil by new methods such as bioremediation is necessary.  in this paper, the effect of chemical fertilizers and aeration on bioremediation of oil-contaminated soil has been investigated. also the control group, (bioremediation of petroleum hydrocarbons in contaminated soil without treatment by chemical fertilizers and aeration treatment was examined. the cond...