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Roman Wan-Wendner

1 Scope The design of safe and durable concrete structures made from standard as well as high performance concretes, and the maintenance and rehabilitation of the built infrastructure, both require an in-depth understanding of the complex heterogenous aging composite material concrete. Questions pertaining to the ultimate capacity, serviceability, and durability, as time variant problems have to be faced in all phases of a concrete structure’s life-time, from design, operation and maintenance up to demolition. In the design phase, multi-decade predictions

Open access

Agnieszka Ławniczak

, Northern Poland as a result of human interference, Hydrobiologia 103: 165-168. Crisman T. L., Mitraki Ch., Zalidis G., 2005, Integrating vertical and horizontal approaches for management of shallow lakes and wetlands, Ecol. Eng. 24: 379-389. Einsele G., Hinderer M., 1997, Terrestrial sediment yield and the lifetimes of reservoirs, lakes, and larger basins, Geol. Rundsch. 86: 288-310. Engloner A. I., 2004, Annual growth dynamics and morphological differences of reed ( Phragmites australis [Cav

Open access

Werner Brueller, Norbert Inreiter, Thomas Boegl, Martin Rubasch, Samim Saner, Franko Humer, Wolfgang Moche, Andrea Schuhmann, Werner Hartl, Christoph Brezinka, Ludwig Wildt and Franz Allerberger

acceptable daily intake (ADI) is valid for all life-stages because based on lifetime-exposure results—was challenged. Assertions were made such as sensitivity to endocrine disruption is highest during tissue development, and developmental effects will occur at lower doses than are required for effects in adults. The opinion on EDCs peaked in the postulation that, when interpreting the results of studies on EDCs or when designing studies to clarify the effects of EDCs and quantifying the risks to human and wildlife health, it must be taken into consideration that endocrine

Open access

Jasmin Putz, Eva M. Vorwagner and Gernot Hoch

Abstract

Flight performance of Monochamus sartor and Monochamus sutor, two potential vectors of the pine wood nematode, Bursaphelenchus xylophilus was evaluated in laboratory flight mill tests. Beetles emerging from logs infested in the laboratory and incubated under outdoor conditions as well as field collected beetles were used. The maximum distance flown by M. sartor in a single flight was 3,136.7 m. Mean distances (per beetle) per flight ranged from 694.6 m in females to 872.5 m in males for M. sartor. In 75% of all individual flights M. sartor flew less than 1 km; only 3.7% flew distances longer than 2 km. The mean cumulative distance travelled by M. sartor beetles throughout their lifespan was 7.5 km. The smaller M. sutor beetles flew faster and longer distances. The maximum distance per flight was 5,556.5 m; mean distances ranged from 1,653.6 m in females to 1178.3 m in males. The number of available laboratory reared beetles was too low for quantification of lifetime flight capacity for M. sutor. The findings are compared to published data from Monochamus galloprovincialis recorded on the same type of flight mill as well as to field data from mark-release-recapture studies. The high flight capacity of Monochamus beetles illustrates the importance of considering dispersal of the vectors when planning control measures against the pine wood nematode.

Open access

Zahra Tazerouni and Ali Asghar Talebi

Abstract

Sipha maydis (Passerini) is a pest of Poaceae in many cereal-growing area of the world and Iran. The effects of temperature on biology and life table were investigated at five constant temperatures (15, 20, 25, 30 and 32.5±1°C), 60±5% relative humidity (RH) and a photoperiod of 16L : 8D h. The results indicated that aphids failed to complete development at 32.5°C. Developmental time was ranged between 17.28 to 9.55 days at 15 and 30°C, respectively. The lower developmental threshold (T0) and thermal constant of S. maydis were estimated to be –5.52°C and 332.22 degree-days, respectively. The Analytis-3/Briere-1 model (as non linear model) is highly recommended for the description of temperature dependent development of S. maydis. The highest life expectancy of adults at emergence was 33.35 days at 20°C. The mean adult longevity of females and nymphipositional period were the highest at 20°C. The mean lifetime fecundity at 15, 20, 25 and 30°C were 21.24±1.97, 44.82±3.18, 22.25±2.33 and 16.39±1.15 nymphs/female, respectively. The survivorship curves of S. maydis were type I at 20 and 25°C (H < 0.5) and type III at 15 and 30°C (H > 0.5). The highest and lowest values of intrinsic rate of increase (rm) were observed at 20 (0.173±0.012 females/female/day) and 15°C (0.109±0.003 females/female/ /day), respectively. The growth index (GI) at 15, 20, 25 and 30°C were 0.033, 0.069, 0.062 and 0.038, respectively. According to this research the optimum temperature for population growth of S. maydis was 20°C. Our findings provide fundamental information and when this information is used in association with other ecological data, it may be valuable in development and implementation of management programs of S. maydis.

Open access

Danuta Woreta and Lidia Sukovata

Wpływ pokarmu na rozwój chrząszczy chrabąszcza kasztanowca (Melolontha hippocastani F.) (Coleoptera, Melolonthidae)

Open access

Jakub M. Gac and Monika Petelczyc

, Ghaffarpasand O. The effects of emission sources and meteorological factors on sulphur dioxide concentration of Great Isfahan, Iran. Atmos Environ. 2015;100:94-101. DOI: 10.1016/j.atmosenv.2014.10.012. [8] Meng Z-Y, Xu X-B, Wang T, Zhang X-Y, Yu X-L, Wang S-F, et al. Ambient sulfur dioxide, nitrogen dioxide, and ammonia at ten background and background sites in China during 2007-2008. Atmos Environ. 2010;44:2625-2631. DOI: 10.1016/j.atmosenv.2010.04.008. [9] Lee C, Martin RV, van Donkelaar A, Lee H, Dickerson RR, Hains JC, et al. SO 2 emissions and lifetimes

Open access

T. Olšan, M. Libra, V. Poulek, B. Chalupa and J. Sedláček

, Libra M (2012): Towards 50 years lifetime of PV panels laminated with silicone gel technology. Solar Energy, 86, 10, 3103-3108. Poulek V, Libra M, Jirka V, Persic IS (2013): Polysiloxane gel lamination technology for solar panels and rastered glazing. ILSA, Prague. Rösch R, Krebs FC, Tanenbaum DM, Hoppe H (2012): Quality control of roll-to-roll processed polymer solar modules by complementary imaging methods. Solar Energy Materials and Solar Cells, 97, 176-180. Sharma V, Chandel SS (2016): A novel study for determining

Open access

David Hoffmann, P. Heřmánek, A. Rybka and B. Jošt

.6.2013 Hujo L, Tkáč Z, Tulík J, Haudák V (2013): Design of laboratory test device for evaluating the lifetime of hydraulic components of tractor three-point hitch. Advanced Materials Research, 801, 137-142. Kopecký J, Ježek J (2008): Principles for quality mechanized cut. Chmelařství, 81, 21-24. (in Czech) Křivánek J, Ježek J (2010): The importance of cut and verification of German prototype machines for hop cutting designed for a low trellis system in ÚH Stekník. Chmelařství, 83, 45-48. (in Czech) Křivánek J, Pulkrábek J

Open access

Pavel Zehtindjiev

-763. Fransson T., Jakobsson S., Johansson P., Kullberg C., Lind J., Vallin A. 2001. Magnetic cues trigger extensive refuelling . Nature 414: 35. Hansson B., Bensch S., Hasselquist D. 2003. A new approach to study dispersal: immigration of novel alleles reveals female biased dispersal in great reed warblers . Mol. Ecol. 3: 631-637. Hansson B., Bensch S., Hasselquist D. 2004. Lifetime fitness of short- and long-distance dispersing great reed warblers . Evol. Int. J. Org. Evol. 11: 2546