15 research outputs found
Effects of Air Polution on Growth in Schoolchildren
The growth is considered a very sensitive indicator of the impact of environment of the health status of children. The aim of the study was to investigate whether air pollution is related to childrenās growth. The subjects were 1059 pupils, aged 7ā11 years, living for more than ten years in the same home in the city of Ni{ (Serbia). Exposed group of children (N=545) were attending the school located in a city area with a high level of air pollution, while the children (N=514), in the comparison group, designed as non-exposed group, were attending the school in the area with a lower level of air pollution. The air concentrations of black smoke, nitrogen dioxide, sulfur dioxide and lead in sediment matter were determined in ten-year period. Air pollution is associated with childrenās height and weight, specially before the age of 9 years. There was a significant difference in the prevalence of thinness in children exposed to higher concentrations of air pollutants (p=0.038). It might be possible that air pollution negatively contributed to the growth rate in urban children
Assessment of the quality of herbal teas from Å abac, Serbia in terms of the content of heavy metals
Chemical components of teas have received great interest because they are related to health. In this work, data
on the determination of foreign matter, loss on drying/water content, total ash and ash insoluble in hydrochloric
acid are presented. The content of seven heavy metals including Cu, Fe, Mn, Zn, Ni, Cd and Pb were determined
by atomic absorption spectrometry in samples of several herbal teas: Matricariae flos, Thymi herba,
Menthae piperitae folium, Betulae folium, Quercus cortex, Gentianae radix, Frangulae cortex, Althaeae radix,
Uvae ursi folium and Glycyrrhizae radix collected from Å abacās market, Serbia. The sample preparation
procedure involved dry digestion and dissolution of the ash in 6M HCl and then in 0.1 M HNO
3
. Herbal teas
showed the concentration of heavy metals Cu, Fe, Mn, Zn and Ni in the range: 2.9 0.1 ā 22.2 0.9 mg/kg,
118.5 1.1 ā 755.5 2.5 mg/kg, 19.0 5.8 ā 561.0 1.9 mg/kg, 6.5 0.4 ā 242.5 1.4 mg/kg and
2.5 0.1 ā 10 1.1 mg/kg, respectively. The level of copper in all samples was uniform. The highest content
of Fe was in Thymi herba, while Mn and Zn were at maximum in Betulae folium. The levels of toxic heavy
metals Cd and Pb were below the detection limit. The obtained values were compared with data available from
literature. The herbal tea samples analyzed contained essential heavy metals (Cu, Fe, Mn, Zn) and probably
essential in trace (Ni), and could obey the daily dietary requirements. Noncancer health risk assessment detected
that the herbal teas of Betulae folium and Frangulae cortex can manifest some health risk to consumer
Overall railway infrastructure effectiveness as a quality factor for Serbia railways
U radu je analizirana moguÄnost praÄenja parametra OEE kod infrastrukture "Železnice Srbije" ad. Transformacija indikatora i obrasca za OEE u odgovarajuÄi koji se koristi za željezniÄku infrastrukturu zove se ukupna efektivnost željezniÄke infrastrukture (overall railway infrastructure effectiveness - ORIE). U radu je predstavljen model za izraÄun ukupne efektivnost željezniÄke infrastrukture (ORIE). Dokazano je da se program, koji funkcionira na Å vedskim željeznicama, može prilagoditi da funkcionira i na infrastrukturi "Železnice Srbije" ad. U radu je izvrÅ”ena prilagodba i prijedlog obrazaca ORIE koji Äe zadovoljiti specifiÄne potrebe za izraÄun vrijednosti za "Železnice Srbije" ad. Studijom sluÄaja izraÄunato je za tri relacije pruga u Sekciji za infrastrukturu Ävora Požarevac, da se vrijednost ORIE utemeljena na realnim podacima razlikuje od 47,95 % do 60,71 %.This paper analyzed the possibility of monitoring the parameter OEE for "Serbia Railways" JSC. Transpatternation of indicators and of pattern for OEE in order to make them appropriate for use in railway infrastructure is known as Overall Railway Infrastructure Effectiveness - ORIE. This work represented a model for calculation of ORIE. It is proven that the program, which works at Swedish railways, can be adapted in order to make it functional for infrastructure of "Serbia Railways" JSC. Also, this work includes conducted adaptation and proposal of ORIE patterns which will satisfy specific needs for calculation of values for "Serbia Railways" JSC. Using the case study, it is calculated for three railway relations in Section for infrastructure of Požarevac that the value of ORIE based on real data differs in rang from 47,95 % to 60,71 %
An Integral View of Balmer-dominated Shocks in Supernova Remnants
We present integral-field spectroscopic observations with the VIMOS-IFU at the VLT of fast (2000-3000 kmsā1) Balmer-dominated shocks surrounding the northwestern rim of the remnant of supernova 1006. The high spatial and spectral resolution of the instrument enable us to show that the physical characteristics of the shocks exhibit a strong spatial variation over few atomic scale lengths across 133 sky locations. Our results point to the presence of a population of non-thermal protons (10-100 keV) which might well be the seed particles for generating high-energy cosmic rays. We also present observations of Tycho's supernova remnant taken with the narrow-band tunable filter imager OSIRIS at the GTC and the Fabry-Perot interferometer GHaFaS at the WHT to resolve respectively the broad and narrow HĪ± lines across a large part of the remnan
Total sugar content in soybean grain and its relationship with protein, oil and fibers
Soybean grain is one of the most important food and feed sources, containing approximately
40% protein, 20% oil, 35% carbohydrates and 5% minerals. The proportion of seed
composition determines the uses of soybean. High-oil varieties are recommended for oil and
soy-diesel industries, while food production usually requires lower oil, but higher protein and
sugar contents.High level of sucrose, glucose, and fructose provides sweet taste and
favourable flavour of soyproducts. The aim of the study was to evaluate 10 soybean
genotypes (released cultivars and experimental lines) developed at the Maize Research
Institute Zemun Polje by analysing their chemical composition and biochemical properties
and determining the correlations between the observed parameters. The highest content of
total fibre (NDF) was found in cultivar Lidija (22.75%), while the lowest was noted for line
L193 (10.10%). Total proteins varied from 37.82% in variety Laura to 42.03% in cultivar
Selena, while oil content reached values from 19.9% in L0161 to 22.05% in cultivar
Laura.Total sugar content ranged from 6.48% in cultivar Laura to 11.52% in line L0161.
Accordingly, the lowest (5.43%) and the highest (10.31%) sucrose content was observed for
latter genotypes, confirming highly positive correlation between total sugar content and
sucrose level (0.99).A negative correlation between total sugars and total fibre was observed
(-0.37), as well as a negative correlation (-0.69) between total sugars and oil in soybean grain.
Relationship between grain sugars and protein was extremely low (0.10), suggesting that
improvement of sugars may not necessarily affect protein. A line L0161 was identified as a
unique germplasm line with favourable seed composition, containing the highest level of
sucrose and total sugar, minimum oil and above average protein content (39.87%)
The impact of changes in psoriasis area and severity index by body regions on quality of life in patients with psoriasis
Psoriasis severity varies by body region, with each affected region having a different impact on patient quality of life (QoL). The aim of this study was to assess the impact of changes in the Psoriasis Area and Severity Index (PASI) scores by body region on QoL in patients with psoriasis after treatment. A total of 100 patients with psoriasis were recruited to the study. All patients completed the generic EuroQol-5D instrument and two specific QoL measures, Dermatology Life Quality Index (DLQI) and Psoriasis Disability Index (PDI) at the beginning of the study, and 50 patients successfully completed the same questionnaires four weeks after the end of the treatment. Clinical severity was assessed using PASI total score and PASI body region (head, trunk, arms, and legs) scores. QoL improved after treatment, and PASI improvements on visible body regions (head, legs, and arms) showed significant correlation with the most sub-areas of the Visual Analog Scale (EQ VAS), DLQI, and PDI. Multiple linear regression analysis revealed that PASI improvement (particularly on the head), sex, age, and disease duration were predictors of QoL score changes for most domains of the three instruments. Improvement of psoriasis in visible body regions has an appreciable influence on QoL improvement, and may positively affect treatment success in patients with psoriasis. riadPro-Regular;color:black;mso-ansi-language:EN-US; mso-fareast-language:HR;mso-bidi-language:TA\u27>The proportion of ADHD in patients with AD was 7.1% as compared to 4.1% in controls. ADHD was more frequent in boys with AD (9.6% vs. 5.2%, odds ratio (OR) 1.9, 95% confidence interval (CI) 1.1-3.2) but not in girls with AD (4.6% vs. 2.9% OR 1.5). In multivariate analyses, AD was associated with ADHD (OR 2.1, 95% CI 1.3-3.4). The current study demonstrated an association between AD and ADHD. This report and earlier observations emphasize the need for detection and treatment of ADHD in atopic patients.Ā Ā </p
An Integral View of Balmer-dominated Shocks in Supernova Remnants
We present integral-field spectroscopic observations with the VIMOS-IFU at the VLT of fast (2000-3000 kmsā1) Balmer-dominated shocks surrounding the northwestern rim of the remnant of supernova 1006. The high spatial and spectral resolution of the instrument enable us to show that the physical characteristics of the shocks exhibit a strong spatial variation over few atomic scale lengths across 133 sky locations. Our results point to the presence of a population of non-thermal protons (10-100 keV) which might well be the seed particles for generating high-energy cosmic rays. We also present observations of Tycho's supernova remnant taken with the narrow-band tunable filter imager OSIRIS at the GTC and the Fabry-Perot interferometer GHaFaS at the WHT to resolve respectively the broad and narrow HĪ± lines across a large part of the remnant
GenetiÄke transformacije voÄaka i vinove loze
Besides different methods of combinative breeding, mutations and selection in last few years, the most modern biotechnological methods are more and more implemented in fruit and grapevine breeding. In almost all breeding programs, among numerous methods of biotechnology, genetic transformations are very successfully applied. Till now, genetic engineering in fruits and grapevine species was done with limited success, but in future it promises a lot. While gene transfer and enriches of genetic potential becomes more reality in fruits and grapevine species, in this paper the review of the most often DNA transfer from one to another genotype, and survey of the most important results of foreign genes introduction in fruits and grapevine species was given.Pored razliÄitih metoda kombinacionog oplemenjivanja, mutacija i selekcije poslednjih godina u oplemenjivanju voÄaka i vinove loze sve se vise uvode i najsavremenije metode biotehnologije. U skoro svim oplemenjivaÄkim programima meÄu brojnim metodama biotehnologije uspeÅ”no se primenjuju i genetiÄke transformacije. Do sada je genetiÄko inženjerstvo voÄaka i vinove loze radeno sa dosta limitiranim uspehom, ali u buduÄnosti puno obeÄava. PoÅ”to transfer gena i obogaÄivanje genetiÄkog potencijala postaje sve vise realnost i kod voÄaka i vinove loze, u ovom radu dat je pregled najÄeÅ”Äih naÄina prenosa DNK iz jednog genotipa u drugi, kao i pregled najvažnijih rezultata uvoÄenja stranih gena kod voÄaka i vinove loze