Претраживање
Приказ резултата 81-89 од 89
Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents, Part I: Pyridine mono-carboxylic acids / Ispitivanje reaktivnosti piridin-monokarbonskih kiselina u reakciji sa diazodifenilmetanom u protičnim i aprotičnim rastvaračima. Deo I
(Serbian Chemical Society, Belgrade, 2005)
Rate constants for the reaction of diazodiphenylmethane with isomeric pyridine carboxylic acids were determined in chosen protic and aprotic solvents at 30 °C, using the well known UV spectrophotometric method. The values ...
Photo degradation of synthetic dyes under visible and solar light / Fotodegradacija sintetskih boja pomoću vidljive i sunčeve svetlosti
(Association of Chemical Engineers of Serbia, 2005)
The photo degradation of synthetic dyes under visible and solar light as a method for the removal of synthetic dyes from water and wastewater was reviewed. The mechanisms of photo degradation are presented. The influence ...
Obtaining of high quality cellulose from the hemp fibers / Dobijanje visoko kvalitetne celuloze iz vlakana konoplje
(Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2005)
In recent years growing attention has been paid to production of cellulose from unconventional, annually and renewable plants such as hemp and flax. Lignin and pectin are very important noncellulosic substances occurring ...
Saturated-liquid heat capacity calculation of alkanes / Predskazivanje toplotnog kapaciteta zasićene tečnosti alkana
(Serbian Chemical Society, Belgrade, 2005)
An empirical model for the calculation of the heat capacity of alkanes is recommended. This model was tested and compared to known models (Luria-Benson and Růžička-Domalski) using 68 sets with 1155 literature experimental ...
Hydrodistillation kinetics and essential oil composition from fermented parsley seeds / Kinetika hidrodestilacije i sastav etarskog ulja fermentiranog semena peršuna
(Association of the Chemical Engineers of Serbia, 2005)
The effect of fermentation conditions on the yield and composition of the essential oil from Petroselinum crispum (Mill.) Nym. ex. A.W. Hill seeds was studied. The yield of essential oil was determined by a Clevenger-type ...
Production of bioethanol from corn meal hydrolyzates / Proizvodnja bioetanola na hidrolizatima kukuruznog brašna
(Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2005)
Bioethanol produced from renewable agricultural recourses is currently the most promising biofuel. In a lot of developed countries in Europe and in USA the use of bioethanol as an alternative fuel or a gasoline supplement ...
Deformation behavior of the AlMg4.5Cu0.5 type alloy sheet
(Savez inženjera metalurgije Srbije, Beograd, 2005)
Deformation behavior of the AlMg4.5Cu0.5 type alloy sheets was examined after cold rolling and annealing in the range of temperature from 220°C to 520°C, water quenching and natural aging. The low temperature annealed ...
Damage monitoring of composite laminates by means of intensity based fiberoptic sensors / Praćenje oštećenja kompozitnih laminata pomoću fiberoptičkih senzora intenzitetnog tipa
(Society for Structural Integrity and Life, Institute for Material Testing, 2005)
The paper deals with the research in applying optical fibres (OF) as intensity-based sensors in real-time damage detection of laminar composite materials. For experimental purposes, thermoplastic laminar composite materials ...
Critical review of relations for predicting the normal freezing point of organic compounds / Kritički prikaz modela za predskazivanje normalne temperature mržnjenja organskih supstanci
(Association of Chemical Engineers of Serbia, 2005)
This paper presents empirical relations for predicting the normal freezing point of organic compounds. Nine relations were tested with 90 organic compounds. The Meyer-van der Wyk and Kreglewski-Marano-Holder models are ...