Search Results

You are looking at 1 - 10 of 56 items for :

  • Industrial Chemistry x
Clear All
Open access

Magdaléna Valšíková, Jaroslav Jedlička, Ivana Mezeyová and Seda Guler

Abstract

Dynamics of onion seeds germination with different germinability and magnetic field influence with variable intensity on onion germinative activity was determined in trials. Amika F1 hybrid marked low germinative activity. On 21th day after trial foundation it reached germinability of 34–46%. Halftime of this germination was reached on fourth to fifth day after trial foundation. Exhibition variety had convenient germination activity, 70–91%. Halftime of its germinability was reached on sixth to eighth day after trial foundation. On the base of submitted results there can be said that the seed with low germinative activity has faster initial start of germination. The seed with suitable germinative activity has more regular course of germinability from the beginning till the end of germination. Seeds of varieties Amika F1 and Exhibition achieved significantly lower germination in the radiation intensity of 20 mT compared to other variants with the radiation intensity of 40 mT, 55 mT and the control one. Between the variants of 40 mT, 55 mT and the control one the differences were not significant.

Open access

Rafał Smulski

immobile and mobile watersaturation . SPE Paper 28451. Annual Technical Conference and Exhibition. New Orleans, Sept. 25-28, 1994. Geertsma J., 1974. Estimating the coefficient of inertial resistance in fluid flow through porous media . SPE Paper 4706. Society of Petroleum Engineers Journal, Oct. 1974, p. 445-450. Hagoort J., 1988. Fundamentals of gas reservoir engineering . Elsevier, 1988. Jones S.C., 1987. Using the inertial coefficient, β, to characterize heterogeneity in reservoir rock . SPE Paper 16949. SPE Annual

Open access

Dariusz Knez

Exhibition, Denver, Colorado, USA, October 1996. Li S., Purdy C., 2010. Maximum Horizontal Stress and Wellbore Stability while Drilling: Modeling and Case Study. SPE Latin American & Caribbean Petroleum Engineering Conference, Lima, Peru, December 2010. Nagy S., Siemek J., 2011. Shale gas in Europe: the state of the technology - challenges and opportunities. Arch. Min. Sci., Vol. 56, No 4, p. 727-760. Pinka J., Wittenberg G., Engel J., 2007. Borehole Mining. Kosice. Śliwa T., Kotyza J., 2003. Application of

Open access

Andrea Mendelová, Ľubomír Mendel, Martina Fikselová and Alena Andrejiová

Abstract

Carrot (Daucus carota L.) belongs to the most common type of vegetable because of its consumption, versatile usage in the canning industry and because of its beneficial effects on the health of consumers. It is valuable mainly because of the high content of β-carotene, B vitamins, vitamin C, carbohydrates and minerals. The aim of this work was to compare the quality of carrot juice from different varieties of carrots regarding the content of total carotenoids and polyphenols and also to assess the dynamics of their changes evaluated under the influence of the pasteurization (85 °C). There were selected varieties of carrot such as Baltimore F1, Exhibition F1, Kamaran F1, Napoli F1, Belgrado F1, Komarno F1, Nantes, Rubina and Nandrin F1. The highest content of carotenoids, assessed by the spectrophotometry, was determined in variety Kamaran F1 (213.66 mg 100 g−1 dry matter) and the lowest in Belgrado F1 (146.80 mg 100 g−1 dry matter). After the pasteurization, the content of carotenoid decreased and ranged from 128.04 mg 100 g−1 dry matter in variety Napoli F1 to 142.55 mg 100 g−1 in Kamaran F1. The highest content of polyphenol determined by the Folin Ciocalteu method was found in fresh juice of Rubina (922.80 mg GAE 100 g−1 dry matter) and the lowest in the variety Nantes (535.75 mg GAE 100 g−1 dry matter). After the pasteurization, the content of the monitored components was found to be 450.34 mg GAE 100 g−1 dry matter in Napoli F1 to 751.95 mg GAE 100 g−1 dry matter in Komarno F1 variety.

Open access

Sina Norouzi Bezminabadi, Ahmad Ramezanzadeh, Seyed-Mohammad Esmaeil Jalali, Behzad Tokhmechi and Abbas Roustaei

.1016/j.enggeo.2014.02.006 Bataee M., Kamyab M., Ashena R., 2010. Investigation of Various ROP Models and Optimization of Drilling Parameters for PDC and Roller-cone Bits in Shadegan Oil Field. In International Oil and Gas Conference and Exhibition, p. 1-10. Bataee M., Mohseni S., 2011. Application of Artificial Intelligent System in ROP Optimization a Case Study in Shadegan Oil Field. In SPE middle east unconventional gas conference and exhibition, p. 1-10. Bates D.M., Watts D.G., 2007. Nonlinear Regression Analysis and Its Applications . p. 392

Open access

Wenting Qin, Andrew K. Wojtanowicz and Christopher D. White

References Bear J., Dagan G., 1964. Some Exact Solutions of Interface Problems by Means of the Hodograph Method . J. Geophys. Res. 69(8): 1563-1572. Chaperon I., 1986. Theoretical Study of Coning Toward Horizontal and Vertical Wells in Anisotropic Formations: Subcritical and Critical Rates . Paper SPE 15377, SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, October 5-8. Dikken B.J., 1990. Pressure Drop in Horizontal Wells and Its Effect on Production Performance . SPE Journal of

Open access

Jiafu Xu, Evren Ozbayoglu, Stefan Z. Miska, Mengjiao Yu and Nicholas Takach

Downhole Conditions . SPE Drilling & Completion, Vol. 22, No. 4, pp. 304-312, December. Chen Z., 2005. Study of Cuttings Transport with Foam under Elevated Pressure and Elevated Temperature Conditions . PhD Dissertation, U. of Tulsa, Oklahoma. Clark R.K., Bickham K.L., 1994. A Mechanistic Model for Cuttings Transport . SPE 28306, 69th Annual Technical Conference and Exhibition, New Orleans-Louisiana, September 25-28, 1994. Duan M., 2007. Study of Cutting Transport Using Foam with Drill Pipe Rotation Under Simulated

Open access

Marina Sidorová, Pavel Cizek, Yuri Galant and Ján Pinka

References Babushka V., Plomerova J., 2010. Mantle lithosphere control of crustal tectonics and magmatism of the western Ohře (Eger) Rift . Journal of Geosciences, 55, 171-186. Beskrovniy N., 1985. Non-organic origin of oil and gas (contemporary state of the problem and directions of further searching) . VIEMS, Moscow, 46. Galant Y., Geptner A., Pikovsky Y.I., 2007. Evidence of hydrocarbon migration in volcanic piles of rift system . AAPG and AAPG European region Energy Conference and Exhibition, Challenge our Myth, AAPG, Athens, 86

Open access

Adrienn Nagy, Kitti Kollár and László Péli

. Kolorprint Kft., Békéscsaba. Tóth, J. - Almási , I. 2001. Interpretation of observed fluid potential patterns in a deep sedimentary basin under tectonic compression: Hungarian Great Plain, Pannonian Basin, Geofluids, vol. 1, 2001, no. 1, p. 11-36. Tulinius, H. - Ádám , L. - Strack , K. M. - Yu, G. - He, L. F. 2008. Geothermal Exploration Using Integrated 2-D MT and Gravity Surveys in Hungary; 70th EAGE Conference & Exhibition - Rome, Italy, 9 - 12 June 2008 Hungarian Geological Survey. 2002. Assessment of the Domestic

Open access

Marian Dolipski, Piotr Cheluszka, Piotr Sobota and Eryk Remiorz

Górniczy 71 , 4, 72-82. Dolipski M., Cheluszka P., 1999, Dynamic model of a roadheader’s cutting system which incorporates transverse cutter heads . Arch. Min. Sci. 44 , 1, 113-146. Dolipski M., Cheluszka P., 1998. Bestimmung der Form des Schnittkraftverlaufs an Kegelmeißeln von Vortriebsmaschinen . Glückauf-Forschungshefte 59 , 4, 123-127. Dolipski M., Jaszczuk M., Cheluszka P., Sobota P., 2001. Mathematical modelling of the roadheader’s cutting process . 17 th International Mining Congress and Exhibition of Turkey – IMCET 2001, 645