Effects of Acute Physical Exercise on Mathematical Computation Depending on the Parts of the Training in Young Children

The aim of this study was to determine whether acute physical exercise may increase the ability to quickly solve basic mathematical operations in young children. In this way, the children acquired the means to activate a larger area of the brain when necessary. The research sample of 38 preschool and 18 schoolchildren was tested in basic mathematical operations before and after physical exercise. The results showed that children’s computational performance was enhanced signifi cantly during exercise and remained stable after relaxation part of their physical training

Cancer risk assessment of anatomy laboratory workers

Formaldehyde (FA) is a chemical traditionally used in pathology and anatomy laboratories as a tissue preservative. Several epidemiological studies of occupational exposure to FA have indicated an increased risk of various types of cancer in industrial workers, embalmers and pathology anatomists. Based on the available data IARC, the International Agency for Research on Cancer, has recently classified FA as a human carcinogen. This paper presents the results of the quarterly monitoring of concentration levels of formaldehyde in the working premises of the Department of Anatomy at the Medical Faculty. Air monitoring was performed in order to evaluate occupational exposure to FA. The measurements of concentration levels of formaldehyde were conducted at five locations inside the Department in order to assess the exposure level and cancer risk of students and employees of the institution. The level of exposure to FA was evaluated near the breathing zone of workers. The calculations indicate an extremely high level of cancer risk of the employees. The values obtained in all measuring places are significantly higher than those recommended by international expert organizations. When it comes to students, risk levels are in range with those recommended by international organizations

Tehnologija proizvodnje i sortiment krompira

Potato is one of the most important varieties in the world, as well as in Serbia. It has exceptional agrotechnical, biological, ecological and economic significance. In the period 1970-2014, the average potato production of Serbia amounted to 830,543 t. In the same period, the average potato production of Vojvodina amounted to 274,809 t, with the tendency of land area decrease and the increase of yield per a unit of area. The last decade of the 20th century saw significant changes in the technology of potato production in Serbia. Special attention is being attached to tillage before planting, after planting and before germination, as well as to tillage during the vegetation period, potato nutrition, irrigation and implementation of regular care measures, and the control of disease-causing agents, pests and weeds in potato crop. In the past few years, modern technology has been introduced in the potato cultivation on our fields. As a result, yields in Serbia have reached the level similar to that of the Netherlands and Belgium. During the last 10 years, many significant changes occurred in potato cultivation in Serbia. Some varieties are not being produced any more (e.g. Jaerla, Adora, Bartina), some are being cultivated on smaller areas (e.g. Kondor, Kennebec, and in the last two or three years Carrera too), but there is a rapid expansion of a lot of new varieties (e.g. Riviera, Kuroda, Rudolph, Bellarosa, Lusa). In the years to come much is expected from the following varieties: Volare, Esmme and Colomba. Some of them have exceptional fertility, achieving the yields of 50-70 t/ha, depending on the level of agrotechnical measures applied.Krompir je jedna od najznačajnijih gajenih biljnih vrsta u svetu i kod nas. Ima izuzetan agrotehnički, biološki, ekološki i ekonomski značaj. U Srbiji se, u periodu 1970-2014. godine, u proseku godišnje proizvede 830.543 t. U istom periodu, u AP Vojvodini, se prosečno godišnje proizvodilo 274.809 t krompira sa tendencijom opadanja površina i rasta prinosa po jedinici površine. U poslednjoj deceniji prošlog veka nastaju značajne promene u tehnologiji proizvodnje krompira kod nas. Posebna pažnja se poklanja obradi zemljišta pred sadnju, posle sadnje a pre nicanja krompira, zatim u toku vegetacije, ishrani, navodnjavanju i sprovođenju redovnih mera nege i zaštite od prouzrokovača bolesti, štetočina i korova. Na našim njivama se poslednjih godina primenjuje savremena tehnologija gajenja pa se mogu očekivati prinosi koji su karakteristični za proizvođače u Holandiji i Belgiji. U poslednjih 10-ak godina došlo je do značajnih promena i u gajenom sortimentu krompira u Srbiji. Neke sorte su potpuno nestale iz proizvodnje (Jaerla, Adora, Bartina), nekoliko se gaji na sve manjim površinama (Kondor, Kennebec, a u poslednje 2-3 godine i Carrera), ali sve više je novih sorti sa brzom ekspanzijom u mnogim krajevima (Riviera, Kuroda, Rudolph, Bellarosa, Lusa). Od sorti Volare, Esmme i Colomba se puno očekuje u narednim godinama. Neke od navedenih sorti su sa izuzetnim potencijalom rodnosti, pa su kod većeg broja proizvođača dostigle prinose 50-70 t/ha, što zavisi i od nivoa agrotehnike

Early potato

The harvest area of potatoes in South East Europe is about 580 000 ha with a production of about 11 000 000 tonnes. It is estimated that 20–25% of all harvested area is used for early potatoes. Early potato is of high biological and nutritional value, and is suitable for growing on small family-run commercial farms. In the continental area of South and South East Europe, new potato matures for harvest in late May, June and early July. In recent years, early potato has reached the market 20–25 days earlier thanks to the adoption of specific cultivation practices and growing technologies, as well as an increase in financial input per unit area. As the first spring vegetable, early potato is considered a supreme biological and economic crop. The first precondition for high, stable and quality production of early potato is the choice of very early-maturing cultivars with high yield potential, good adaptability and stability. The second precondition is the planting of equally sprouted and certified seedlings with mulching and crop covering with agrotextiles. In the continental area of South and South East Europe, apart from early potato farming in temporary protected areas – for example, direct crop covering with or without mulching and in low plastic tunnels – early potato is also grown in large plastic tunnels without additional heating. Early potato is planted in mid-February in the Mediterranean area. This is 30 days earlier than in the continental area, and when covered with agrotextiles it can be harvested even earlier. This chapter presents some biological and agrotechnological aspects, such as biological needs, fertilization, irrigation, harvesting and storage of early potatoes

Technological quality traits phenotyping of Camelina across multienvironment trials

Camelina (Camelina sativa [L.] Crtz.) is an oilseed crop of the Brassicaceae family. It represents revived crops, which was reintroduced to contribute in diversification of the used crops. Field trials were set in a total of five different locations across four years in which in Serbia (2015/2016, 2016/2017, 2017/2018, 2018/2019) and in Austria (2016/2017). In all samples, 12 different environments were processed. Analysis of the distributions of environments for oil content, which mirrored protein content, using the PCA analysis, shows a statistical significance of the first two main components, which participated in the phenotypic variation with a larger amount to additive component and with both axes having a statistically significant effect on the interaction. The first two main components jointly explained more than 80% of the variation in two traits. The statistical significance of the remainder is a consequence of an agronomically explicable variation. The genotypes NS Zlatka and NS Slatka, used in this study, come from elite breeding material that is engineered to provide a consistent return to the producer regardless of the amount of money invested in primary agricultural production. Incorporating these varieties into the crop rotation would broaden the range of species available in Balkan agriculture

Development and validation of new multiresidue method for the determination of multiclass pesticide residue using LCMS/MS in onions

The LC-MS/MS was used in the ESI+ mode. The method was set for the detection of six multiclass pesticides in a single injection. The validation procedure for the method was in accordance with SANTE /11945/2015and it was carried out using blank onion samples spiked with a pesticide mix solution at four levels: 0.01, 0.02, 0.1 and 0.2 μg/mL, with carbofuran– D3 as the internal standard. The linearity of the method was investigated in the range from 0.01 to 0.20 mg/kg. The obtained R2 values for all investigated pesticides (formetanate hydrochloride, spirotetramat, spinosad, dimethomorph, metalaxyl-Mand mandipropamid)were higher than 0.99.The recoveries ranged from96.2 to 101.45 with the precision lower than 8.00%. The LODs were calculated using the Agilent MassHunter B.04.00 software, and the LOQs were experimentally set at 0.01 mg/kg

The concentration of nitrates in cauliflower and broccoli under different fertility regimes

Cauliflower and broccoli are the vegetables that are grown and consumed around the world. The concentration of nitrate largely determines the quality of the vegetables. As the elevated content of consumed nitrates can significantly affect the health of humans and especially children, it is necessary to examine the influence of different organic and mineral fertilizers on nitrate content in these vegetables as well as the influence of the presence or absence of mulch. In the present study nine types of organic, mineral and combined fertilizers have been applied to cauliflower and broccoli with and without the presence of mulch. The content of nitrates, depending on the applied fertilizer, differed significantly, up to 4.4 times in cauliflower with mulch, or up to 3 times in broccoli without mulch. Proper fertilization and use of mulch can make a significant contribution to making vegetables a health-safe food

Monitoring of inorganic chemical parameters in river Danube, Novi Sad, Serbia

Because of the importance Danube river has on the region and the population affected by it is essential to maintain constant monitoring. With new emerging pollutants every day and regular threats one of the crucial goals is to investigate the causes of possible contamination with the acquisition of new, until then unknown information. To be able to achieve quality investigation and to acquire new information special monitoring has been conducted, in which quantitative analysis of key physical-chemical parameters in water body was carried out with laboratory methods

Water for all : Proceedings of the 7th international scientific and professional conference Water for all

The 7th International Scientific and Professional Conference Water for all is organized to honour the World Water Day by the Josip Juraj Strossmayer University of Osijek, European Hygienic Engineering & Design Group (EHEDG), Danube Parks, Croatian Food Agency, Croatian Water, Faculty of Food Technology Osijek, Faculty of Agriculture in Osijek, Faculty of Civil Engineering Osijek, Josip Juraj Strossmayer University of Osijek Department of Biology, Josip Juraj Strossmayer University of Osijek Department of Chemistry, Nature Park “Kopački rit”, Osijek- Baranja County, Public Health Institute of the Osijek- Baranja County and „Vodovod-Osijek“ -water supply company in Osijek. The topic of World Water Day 2017 was "Wastewater" emphasizing the importance and influence of wastewater treatments on global environment. The international scientific and professional conference Water for all is a gathering of scientists and experts in the field of water management, including chemists, biologists, civil and agriculture engineers, with a goal to remind people about the significance of fresh water and to promote an interdisciplinary approach and sustainability for fresh water resource management. The Conference has been held since 2011. About 300 scientists and engineers submitted 95 abstracts to the 7th International Scientific and Professional Conference Water for all, out of which 33 was presented orally and 62 as posters. 47 full papers were accepted by the Scientific Committee. 38 full papers became the part of the this Proceedings while 9 papers were accepted for publication in Croatian Journal of Food Science and Technology and Electronic Journal of the Faculty of Civil Engineering Osijek - e-GFOS