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Abstract

Carbon dioxide (CO2) may have toxic effects at concentrations much lower than the concentration at which its stifling effect of asphyxiant is reflected. In the workplace, the maximum permissible exposure limit of 5000 ppm is permitted on the average. However, there are certain places where the concentration of CO2 in an enclosed room or area may potentially reach extreme and life-threatening levels. Extreme levels of CO2 may lead to death, especially in enclosed spaces, such as in fermentation rooms or in the process of wine production or in breweries. CO2 may have negative effects on health and safety at the workplace. Monitoring and control of CO2 in the working environment is important for the safety and health of employees and is one of the approaches to a healthier environment in the workplace. The use of CO2 sensors to control the ventilation can be an effective measure.

Abstract

Environmental performance of each product is defined already at the stage of its design - in its pre-production stage. Environmental quality of the product is one of the most important factors of environmental performance of a product. Environmental quality includes a range of criteria that indicate the nature of the product and its environmental impact throughout its life cycle. The comparative analysis method is one of the ways to assess the environmental quality of the product. The article gives a specific example of the assessments carried out on the impact drills (of one specific brand) with different technical parameters.

Abstract

In the working and outside environment a single factor is never found by itself, rather there are always a number of factors the effects of which can be combined, multiplied and thus adversely affect the human body. Evaluating and assessing health risks at work due to exposure to harmful work factors and the working environment is a challenging and long-term process. Limit values are defined for the categorization of types of work in such a way that it is not foreseeable that, according to current scientific knowledge, they will be detrimental to the health of employees. However, these limit values are set for each factor alone and do not take into account the effect of the combined action of individual factors on the human body. The research aimed at assessing the combined effects of risk factors on human health. The experimental proposal of the assessment focuses on the workplace featuring metalworking machinery and technological equipment. The author paid a significant attention to the risk assessment process and synergistic effects of factors.

Abstract

The work deals with analysis of different transportation domains in horizontal and vertical meaning. It looks for conformity in approaches and terms. It loans to concept of integral safety, i.e. a tool for ensuring the human security; it covers next engineering areas, for instance dependability management, functional safety, security of cyber-physical systems, technical and physical security, surveillance, occupational safety, safe place, human safety etc. Recent professional approaches of safety management and risk engineering are compared with current trends in transportation. It is clear that advanced professional procedures are needed for planned Smart Cities and Industry 4.0 in transportation domain practice; this work contribute to building the unified experts´ language from various transportation domains.

Abstract

This paper describes the present state of historical gardens and parks which were founded around domiciles of the gentry in the area of Turiec valley, Slovakia. Almost forty of these manor houses are located in the area. In the past, the park or the ornamental garden was created in the immediate vicinity of these buildings. The current state of their attached historical greenery described in this contribution is based on field investigation. Natural landscape parks have been preserved to the best degree by nobility in Mosovce and Turcianska Stiavnicka which used to belong to the Revay family. The park in the village Zaturcie is partially well preserved. The other parks and gardens were destroyed to a large degree and their existence can be accounted for only by occasional older trees. Some difficulties in conservation or reconstruction of these historical landscapes are described in the presented work as well.

Abstract

Security situation in the world, in each territory and generally in each asset, continuously changes with time, and therefore, there is formed new safety culture that takes into account actual knowledge and experiences with interdependences among the public assets leading to extreme social crises. With regard to the historical development at present there are lots of management types that differ by aims and by assets that they respect. Consecutively in present human society there are groups that shielded by individual management type aims fight against each other, and at the same time all of them goes on good human existence. The paper deals with the relation between human system safety management and environmental management.

Abstract

The responses of 96 day old broilers fed Chromolaena odorata leaf meal (COLM) on blood profile and gut microbial load were studied for 49 days. The birds were randomly assigned to four treatment groups and replicated three times in a completely randomized design. The birds were fed four experimental diets formulated at 0%, 2%, 4% and 6% for the starter phase and 0%, 4%, 8% and 12% of COLM at the finisher phase for T1, T2, T3 and T4 respectively. All the haematological parameters were similar (P>0.05) across the treatment groups except MCH and WBC which were significantly (P< 0.05) higher and better in the treatment groups than the control group. The results on serum chemistry showed significant (P<0.05) difference for total protein, albumin, creatinine and cholesterol across the treatment groups. Cholesterol was significantly (P<0.05) reduced with increasing levels of COLM. Results showed that coliforms and E.coli were consistently higher (P<0.05) among the T1 birds than those fed T2, T3 and T4. It was concluded that, COLM enhanced adequate haematocrit and immune status, hypoglycaemic ability, suppresses the growth of gut pathogenic microorganisms and enhanced the growth of beneficial microorganism in broilers.

Abstract

Information on estimates of combining ability of the promising lines of breeding material is important for evolving higher yielding varieties of oilseed rape (Brassica napus L.). An experiment was conducted to quantitatively examine the genetic parameters of phenological traits, plant height, pods on main raceme, pods per plant and seed yield for eight oilseed rape genotypes using a half-diallel crosses. The result of the diallel analysis revealed significant mean squares of general and specific combining abilities (GCA and SCA) for all studied traits, indicating the importance of additive and non-additive genetic effects for these traits. On the other hand estimation of high narrow-sense heritability estimates for days to flowering, duration of flowering and pods on main raceme, indicated the prime importance of additive genetic effects for these traits. L420 and L401 with significant negative GCA effects for days to flowering and days to maturity were suitable for yielding early maturity combinations. L41, Zafar and L22 with significant positive GCA effects for seed yield were superior parents for increasing seed yield. The crosses with significant positive SCA effects for seed yield had at least one parent with significant positive GCA effects for this trait. The crosses including L41×L22, L41×LF2, Zafar×L22 and Zafar×L420 with seed yield of 3421.7, 3400, 3348.1 and 3311.3 kg ha-1 could be promising for determination of superior recombinants for high seed yield coupled with other growth characters in advanced generations of segregation.

Abstract

This paper presents a method of estimating the size of plants by using two parallel views of the scene, taken by a common digital camera. The approach relays on the principle of similar triangles with the following constraints: the resolution of the camera is known; the object is always in parallel to the camera sensor and the intermediate distance between the two concessive images is available. The approach was first calibrated and tested using one artificial object in a controlled environment. After that real examples were taken from agriculture, where we measured the distance and the size of a vine plant, apple and pear tree. By comparing the calculated values to measured values, we concluded that the average absolute error in distance was 0.11 m or around 3.7 %, and the absolute error in high was 0.09 m or 4.6 %.

Abstract

The growth performance, haematological and serum biochemical characteristics of thirty-six West African Dwarf (WAD) sheep of about 10 - 12 months of age and averaged 8.53kg in weight were sourced from the College flock. Four dietary treatments designated as T1, T2, T3 and T4 were formulated to contain 0%, 10%, 20% and 30% oil palm leaf meal (OPLM) respectively were randomly assigned to the animals. The experimental animals were divided into four groups of nine animals each, with each group replicated thrice with three animals per replicate. Each group was allotted to one of the diets in a completely randomized design. The animals were weighed at the beginning of the trial and weekly subsequently and data for growth performance were generated. Blood samples were obtained from one animal in each replicate, and data generated were analyzed statistically. Average daily feed intake, total dry matter intake and average daily weight gain were significantly (P<0.05) influenced by the dietary treatment, with animals on T4 group having higher and better values. Feed conversion ratio (FCR) also differed significantly (P<0.05) with sheep on T3 and T4 (11.82 and 11.49 respectively) having the best FCR. The haematology showed that the packed cell volume (PCV), red blood cell (RBC), and mean cell haemoglobin concentration (MCV) were significantly (P < 0.05) improved at 10%, 20% and 30% inclusion levels of OPLM, respectively. Sheep in treatment groups had improved (P < 0.05) white blood cell (WBC) count than those on the control group. Serum biochemistry results showed that total protein, albumin and globulin were significantly influenced (P < 0.05) and tended to increase with increasing levels of test ingredient. Sheep in treatment groups had higher (P < 0.05) urea values than those on control. Creatinine values at 20% and 30% inclusion differed significantly (P < 0.05) with the control value. Cholesterol was significantly influenced (P < 0.05) and followed an irregular trend across the treatment groups. The results showed that inclusion of OPLM had a beneficial effect on the general performance of the WAD sheep. Therefore, 30% OPLM supplementation was recommended for optimum performance in WAD sheep.