Sabina Galiniak, Izabela Krawczyk-Merć and Agnieszka Pedrycz
1. Angelos MG, Kaufman DS. Pluripotent stem cell applications for regenerative medicine. Curr Opin Organ Transplant 2015; 20(6):663-70, DOI 10.1097/MOT.0000000000000244.
2. Paździorek PR. Mathematical model of stem cell differentiation and tissue regeneration with stochastic noise. Bull Math Biol 2014; 76(7):1642-69, DOI 10.1007/s11538-014-9971-5.
3. Jaenisch R, Young R. Stem cells, the molecular circuitry of pluripotency and nuclear reprogramming. Cell 2008; 13: 567-582, DOI 10.1016/j.cell.2008.01.015.
4. Evans MJ, Kaufman
The compressive strength properties of concrete are substantial factors in the design and construction of concrete structures. Compressive strength directly affects the degree to which the concrete can be able to carry a load over time. These changes are complemented by deflections, cracks etc., in the structural elements of concrete. This research investigated the effect of groundnut leaf/stem ash (GLSA) on the compressive strength of concrete at 0%, 5 %, 10 % and 15 % replacements of cement. The effect of the water-cement ratio on properties such as the compressive strength, slump, flow and workability properties of groundnut leaf/stem ash (GLSA) mixes with OPC were evaluated to determine whether they are acceptable for use in concrete structural elements. A normal concrete mix with cement at 100 % (i.e., GLSA at 0%) with concrete grade C25 that can attain an average strength of 25 N/mm2 at 28 days was used as a control at design water-cement ratios of 0.65 and grading of (0.5-32) mm from fine to coarse aggregates was tested for: (1) compressive strength, and the (2) slump and flow Test. The results and observations showed that the concrete mixes from GLSA at 5 – 15 % ratios exhibit: pozzolanic properties and GLSA could be used as a partial replacement for cement at these percentage mix ratios compared with the control concrete; an increase in the water-cement ratio showed a significant decrease in the compressive strength and an increase in workability. Therefore, it is important that all concrete mixes exude an acceptably designed water-cement ratio for compressive strength characteristics for use in structures, water-cement ratio is a significant factor.
Jacek Przybytek, Vladimir Markovich and Grzegorz Jung
Meyer-Neldel behaviour of the conductivity of phase separated La1−xCaxMnO3 manganite system in the low Ca-doping range has been investigated. Evolution of the isokinetic temperature of the conductivity, modified by Ca-doping, hydrostatic pressure and current bias has been determined. In addition, the evolution of the isokinetic temperature with ageing has also been studied. It is found that the Meyer-Neldel behaviour of the manganite system stems from multi-excitation entropy mechanism. The isokinetic temperatures estimated from pressure and doping effects coincide but differ from those determined using current and ageing controlled conductivity changes. It is concluded that in the presence of a detailed theoretical model of the excitations coupling in manganites, the investigations of the Meyer-Neldel effect may became a powerful tool for characterization and investigation of transport mechanisms in phase separated manganites.
Nadezhda Nadezhdina, Jan Čermák, Alec Downey, Valeriy Nadezhdin, Martti Perämäki, Jorge Soares David, Clara A. Pinto and Teresa Soares David
Čermák, J., Kučera, J., Bauerle, W.L., Phillips, N., Hinckley, T., 2007. Tree water storage and its diurnal dynamics related to sap flow and changes in stem volume in old-growth Douglas- fir trees. Tree Physiol., 27, 181-198.
David, T.S., David, J.S., Pinto, C.A., Čermák, J., Nadezhdin, V., Nadezhdina, N., 2012. Hydraulic connectivity from roots to branches depicted through sap flow: analysis on a Quercus suber tree. Funct. Plant Biol., 39, 103-115.
Deslauriers, A., Morin, H., Urbinati, C., Carrer, M., 2003. Daily weather response of
Hag Soo Jang, Hwa Joon Lee, Young Ryeol Joo, Jung Joong Kim and Ho Hwan Chun
The hydrodynamic effect of appendages for high-speed passenger vessels, such as Ro-Pax, Ro-Ro and cruiser vessels, is very severe and, therefore, it is essential to carry out the design of appendages for high-speed passenger vessels from the preliminary design stage to the final detail design stage through a full survey of the reference vessels together with sufficient technical investigation. Otherwise, many problems would be caused by mismatches between the appendages and the hull form. This paper investigates the design characteristics of some appendages, such as the side thruster, the shaft-strut, and the stern wedge, based on the design experience accumulated at Samsung, on CFD, and on model test results for high-speed passenger vessels. Further to this investigation, some practical and valuable design guidelines for such appendages are suggested.
Nadezhda Nadezhdina, Josef Urban, Jan Čermák, Valeriy Nadezhdin and Petr Kantor
sap flow in woody stems of dominant and understory species: scaling errors associated with positioning of sensors. Tree Physiology, 22, 907-918.
Nadezhdina, N., Čermák, J., Gasparek, J., Nadezhdin, V., Prax, A., 2006.Vertical and horizontal water redistribution wit,hin Norway spruce (Picea abies) roots in the Moravian Upland. Tree Physiology, 26, 1277-1288.
Nadezhdina, N., David, T.S., David, J.S., Ferreira, I., Dohnal, M., Tesar, M., Gartner, K., Leitgeb, E., Nadezhdin, V., Čermák, J., Jimenez, M.S., Morales, D., 2010. Trees never
Shengqi Jian, Zening Wu, Caihong Hu and Xueli Zhang
IUSS Working Group WRB, 2006. World reference base for soil resources 2006. 2 nd edition. World Soil Resources Reports No. 203. FAO, Rome.
Ivans, S., Hipps, L., Leffler, A.J., Ivans, C.Y., 2006. Response of water vapor and CO 2 fluxes in semiarid lands to seasonal and intermittent precipitation pulses. J. Hydrometeorol., 7, 995–1010.
Ježík, M., Blaženec, M., Letts, M.G., Ditmarová, L’., Sitková, Z., Střelcová, Z., 2015. Assessing seasonal drought stress response in Norway spruce ( Picea abies (L.) Karst.) by monitoring stem circumference and sap flow
Jaroslav Vido, Katarína Střelcová, Paulína Nalevanková, Adriana Leštianska, Radoslav Kandrík, Alena Pástorová, Jaroslav Škvarenina and Tsegaye Tadesse
indicator of drought avoidance mechanisms in five Mediterranean perennial species in semi-arid southeastern Spain. Trees, 25, 4, 593-606.
Ježík, M., Blaženec, M., Střelcová, K., Ditmarová, Ľ., 2011. The impact of the 2003 - 2008 weather variability on intraannual stem diameter changes of beech trees at a submontane site in Slovakia. Dendrochronologia, 29, 227-235.
Ježík, M., Blaženec, M., Letts, M.G., Ditmarová, Ľ., Sitková, Z., Střelcová, K., 2015. Assessing seasonal drought stress response in Norway spruce (Picea abies (L.) Karst.) by
Shengqi Jian, Xueli Zhang, Dong Li, Deng Wang, Zening Wu and Caihong Hu
The experiments of stemflow of two semiarid shrubs (Caragana korshinskii and Hippophae rhamnoides) and its effect on soil water enhancement were conducted from 1st May to 30th September of 2009-2013 in the Chinese Loess Plateau. Stemflow values in C. korshinskii and H. rhamnoides averaged 6.7% and 2.4% of total rainfall. The rainfall threshold for stemflow generation was 0.5 and 2.5 mm for C. korshinskii and H. rhamnoides. When rainfall was less than 17.0 mm, the funnelling ratios were highly variable, however, stable funnelling ratios were found for rainfall greater than 17.0 mm for C. korshinskii. The funnelling ratios of H. rhamnoides first increased until a threshold value of 10.0 mm and then the funnelling ratios begin stabilize. The wetting front depths in the area around stem was 1.4-6.7 and 1.3-2.9 times deeper than area outside the canopy for C. korshinskii and H. rhamnoides. Soil moisture at soil depth 0-200 cm was 25.6% and 23.4% higher in soil around stem than that outside canopy for C. korshinskii and H. rhamnoides. The wetting front advanced to depths of 120 and 100 cm in the area around stem and to depths of 50 cm in the area outside the canopy for C. korshinskii and H. rhamnoides suggested that more rain water can be conserved into the deep soil layers through shrub stemflow. Soil moisture was enhanced in the area outside the shrub canopy, only when rainfall depth is > 4.7 and 5.1 mm, which is an effective rainfall for the area for C. korshinskii and H. rhamnoides. While for the area around stem of C. korshinskii and H. rhamnoides, the corresponding threshold values are 3.2 and 4.3 mm. These results confirmed that stemflow has a positive effect on soil moisture balance of the root zone and the enhancement in soil moisture of deeper soil layers.