QUALITY CONTROL OF USED WATERS IN TECHNOLOGICAL PROCESSES OF OBTAINING ICE–CREAM PRODUCTS

Monica FIRCZAK, Delia Maria PERJU, Mirabela PANFILOIU,

Sorina STANCA, Persida OLAR

Abstract. Drinking water is an essential element in the assurance of public health and the quality of life. Today the sources of drinking water as rivers, lakes and underground waters are in danger of being polluted by different contaminants. Water’s quality can be defined as a conventional assemble of physical, chemical biological and bacteriological characteristics, expressed as a value which allows the evaluation of the sample and the appreciation of its category. In the European legislation, as well as in our national legislation permitted levels for contaminants in drinking water Maximum are described. The concentration level domain varies from a zero in case of microorganisms such as Coloformii faecali to very small values–like ng/L for other contaminants–all these limits are established concerning the potential danger for human health or the modification of the quality organoleptic characteristics of the water.

Keywords: water, quality, control, ice–cream

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THE BROADLEAF WEEDS IN CORN OF CROP ON AREA SOUTHWESTERN BANAT AND THEIR CONTROL

Eleonora Onć JOVANOVIĆ, Slobodanka MARKOVIĆ, Zlata GAVRILOVIĆ, Piljo DAKIĆ

Abstract. The crop of corn in the ofmarshy blanck soil type to two year trial investigated the efficacy of tembotrion (herbicide Laudis) and foramsulfuron, jodsulfuron-methyl-sodium (herbicide Maister OD). Evaluations of herbicides efficacy was based on the number of weeds and their fresh weight per unit area. Using tembotrion, as so foramsulfuron, jodsulfuron-methyl-sodium recorded good efficacy in control sensitive anual broadleaf weed species. For the evaluation of action investigated tembotrion, as so foramsulfuron, jodsulfuron-methylsodium followed by the number of weeds and fresh weight, based on which the calculated efficiency of the studied treatments. Given these elements has been registered different effectiveness on the dominate annual broadleaf weed species. In both years the research was concluded frekvently Abutilon theophrasti Medik., Datura stramonium L., Hibiscus trionum L., and Portulaca oleracea L., which can be correlated with biological characteristics weed species, and effect uncontrolled environmental factors.

Keywords: broadleaf weeds, corn, control

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