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REFERENCES 1. Agu C.E., Hjulstad Å., Elseth G., Lie B . (2017), Algorithm with improved accuracy for real-time measurement of flow rate in open channel systems, Flow Measurement and Instrumentation, 57, 20-27. 2. Biswal J., Pant H.J., Goswami S., Samantray J.S., Sharma V.K., Sarma K.S.S. (2018), Measurement of flow rates of water in large diameter pipelines using radiotracer dilution method, Flow Measurement and Instrumentation , 59, 194-200. 3. Czech K.R., Gosk W. (2017), Measurement of surface vibration accelerations propagated in the environment

References [1] Navoyan, Kh. A. (1975). Examples of calculation for water-passing structures . Kiev. [2] Petrov, G. A. (1964). Hydraulics of variable mass (variable flow rate fluid flow along the path) . Kharkiv: Kh SU. [3] Danilov, Yu. M. (2004). Investigation of turbulent mixing of two-component mixture in a pipe of periodically variable cross-section. Bulletin of Kazan Technological University. №1, pp. 172-179. [4] Levitsky, B. F., Cherniuk, V. V. (1992). Waste Water Discharge Plant . Author’s certificate 1756483 USSR International Classification of

adolescents and young adults of Ibo origin. E Afr Med J; 69: 105-9. Elebute, E.A, Femi-Pearse, D. 1971. Peak Flow Rate in Nigeria: Anthropometric Determinants and Usefulness in Assessment of Ventilatory Function. Thorax, 1971; 26: 578-600. Essen, S.V. 1997. The role of endotoxin in grain dust exposure and airway obstruction. Curr opin pulm medical Vol 3, Pp 198-202. Host, A., Host, A.H., Ibsen, T. 1994. Peak expiratory fl ow rate in healthy children aged 6-17years. Acta- Paediatrics; 83 (12): 1255-1257. Ige, O.M., Awoyemi, O.B. 2002. Respiratory symptoms and ventilatory

of occupants’ body mass on carbon dioxide mass flow rate inside a university classroom – case study. International Journal of Environmental Health Research , 28(4), pp. 432-447. DOI: 10.1080/09603123.2018.1483010. Kapalo P., Siroczki P., 2014. Calculating the intensity of ventilation in classrooms on the basis of measured concentrations of carbon dioxide in Slovakia - Case study. International Journal of Ventilation , 13(3), pp. 247-258. DOI: 10.1080/14733315.2014.11684052. Lee I.M., Shiroma E.J., Lobelo F., 2012. Impact of Physical Inactivity on the World


The presented paper deals with determining the influence of the flow rate of oxidising atmosphere on the flame spread along the surface of the organic settled dust layer. We determined the rate of the flame spread on the surface of the organic settled dust layer (whole grain rye and spelt flour) with absolute moisture of 10 % wt., for the flow rates of oxidising atmosphere 1, 3, 5 and 10 cm/s. Pure oxygen was used as an oxidising atmosphere. The obtained results suggest that there exists a power relationship of the flame spread rate along the surface of organic settled dust layer to the flow rate of the oxidising mixture. The method described is suitable for the relative comparison of the organic settled dust layer from the point of its ability to spread the flame and the influence of the air flow rate on this process.

References 1. Mathis, D. E.: The flow rate dependence of ventilation; presented at the 38th Tobacco Chemists' Research Conference, Atlanta, Georgia, 1984. 2. Norman, Velio, A. M. Ihrig, R. A. Shoffner and M. S. Ireland: The effect of tip dilution on the filtration efficiency of upstream and downstream segments of cigarette filters; Beitr. Tabakforsch. Int. 12 (1984) 178-185. 3. Mathis, D. E.: Filtration efficiency in ventilated cigarettes; presented at the 36th Tobacco Chemists' Research Conference, Raleigh, North Carolina, 1982. 4. Selke, W. A.: Dilution of

Analytical Solution for Transient Hydraulic Head, Flow Rate and Volumetric Exchange in an Aquifer Under Recharge Condition

This paper presents closed form solution for unsteady flow equation corresponding to the transient hydraulic head, flow rate and volumetric exchange of a confined aquifer which is in contact with a constant piezometric head at one end and a stream whose water level is rising at a constant rate at the other end. The aquifer is also subjected to receive constant inflow due to rain infiltration. The unsteady groundwater flow equation is solved using Laplace transform to get analytical expressions for the transient hydraulic head and flow rate at the left and right interfaces and the net volumetric exchange of water at the aquifer-stream interface. The analytical results presented here show the effect of recharge due to rain infiltration on the net volumetric exchange and reveal the conditions for which net inflow in the aquifer could be positive, negative or zero. The results obtained have the capability to determine transient hydraulic head for two extreme scenarios: (i) very slow rise and (ii) very fast rise in the stream water. Analytical result show that the net volumetric exchange could be positive, zero or negative depending on the surface infiltration and stream water rise rate.

References [1] S. Furbo, I. J. Shah. Optimum solar collector fluid flow rate, Proceeding of Eurosun , Department of Building and Energy (1996) 996 [2] L. M. Nhut, Y. C. Park. A study on automatic optimal operation of a pump for solar domestic hot water system Solar Energy 98 (2013) 448-457 [3] T. Persson, M. Ronnelid. Increasing solar gains by using hot waterto heat dishwashers and washing machines Applied Thermal Engineering 27 (2007) 646-657 [4] V. Badescu. Optimal control of flow in solar collector systems with fully mixed water storage tanks Energy

Dent Assoc 2008;139(Suppl 2):S11-7. Doi: 10.14219/jada. archive.2008.0347 16. Wang XP, Zhong B, Chen ZK, Stewart ME, Zhang C, Zhang K, Ni J, Dodds MWJ, Hanley AB, Miller LE. History of frequent gum chewing is associated with higher unstimulated salivary flow rate and lower caries severity in healthy Chinese adults. Caries Res 2012;46:513-8. doi: 10.1159/000339660 17. de Guillory CD, Schoolfield JD, Johnson D, Yeh C-K, Chen S, Cappelli DP, Bober-Moken IG, Dang H. Co-relationships between glandular salivary flow rates and dental caries. Gerodontology 2014

on efficiencies in hydraulic pumps for automatic transmission. SAE International Journal of Passenger Cars - Mechanical Systems, 6(2), pp. 786-797. Kim, J.H. and Kim, S.G. (2013). A Study on the Approximate Model of the Flow Rate Characteristics in External Gear Pump for EHPS. Journal of the Korea Academia-Industrial cooperation Society, 14(2), pp. 548-553. Kučera, M., Majdan, R., Abrahám, R., Kučera, M. and Haas, P. (2016). Analysis of the effect of loading process on tribological system properties. Acta Universitatis Agriculturae et Silviculturae Mendelianae