Search results

1

Studies on the transformation of calcium sulphate dihydrate to hemihydrate in the wet process phosphoric acid production

100%

Grzmil B., Kic B., Żurek O., Kubiak K.

Polish Journal of Chemical Technology

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2012

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vol. 14

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issue 2

80-87

EN

The influence of the process temperature from 85°C to 95°C, the content of phosphates and sulphates in the wet process phosphoric acid (about 22-36 wt% P2O5 and about 2-9 wt% SO42-) and the addition of αCaSO4·0.5H2O crystallization nuclei (from 10% to 50% in relation to CaSO4·2H2O) on the transformation of calcium sulphate dihydrate to hemihydrate has been determined. The wet process phosphoric acid and phosphogypsum from the industrial plant was utilized. They were produced by reacting sulphuric acid with phosphate rock (Tunisia) in the DH-process. The X-ray diffraction analysis was used to determine the phase composition and fractions of various forms of calcium sulphates in the samples and the degree of conversion of CaSO4·2H2O to αCaSO4·0.5H2O and CaSO4. It was found that the transformation of CaSO4·2H2O to αCaSO4·0.5H2O should be carried out in the presence of αCaSO4·0.5H2O crystallization nuclei as an additive (in the amount of 20% in relation to CaSO4·2H2O), at temperatures 90±2°C, in the wet process phosphoric acid containing the sulphates and phosphates in the range of 4±1 wt% and 27±1 wt%, respectively.

2

Selected problems in the process of transformation of the right of perpetual usufruct into ownership title to real properties

100%

Trembecka A., Trembecka A.

Geodesy and Cartography

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2020

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vol. 69

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issue 1

3

New Regulations on Transforming the Right of Perpetual Usufruct into Ownership Title

100%

Trembecka A.

Geodesy and Cartography

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2019

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vol. 68

|

issue 1

4

The Effect of Chromium Addition on Physical Properties of Cu-Al Based High Temperature Shape Memory Alloy

88%

Deniz Çirak Z., Kök M., Aydoğdu Y.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 4

5

Production of oleanolic acid glycosides by hairy root established cultures of Calendula officinalis L.

75%

Długosz M., Wiktorowska E., Wiśniewska A., Pączkowski C.

Acta Biochimica Polonica

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2013

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vol. 60

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issue 3

467-473

EN

In order to initiate hairy root culture initiation cotyledons and hypocotyls of Calendula officinalis L. were infected with Agrobacterium rhizogenes strain ATCC 15834 or the same strain containing pCAMBIA 1381Z vector with β-glucuronidase reporter gene under control of promoter of NIK (Nematode Induced Kinase) gene. The efficiency of induction of hairy roots reached 33.8% for cotyledons and 66.6% for hypocotyls together for both transformation experiments. Finally, eight control and nine modified lines were established as a long-term culture. The hairy root cultures showed the ability to synthesize oleanolic acid mainly (97%) as glycosides; control lines contained it at the average 8.42 mg · g-1 dry weight in tissue and 0.23 mg · dm-3 in medium; modified lines: 4.59 mg · g-1 for the tissue, and 0.48 mg · dm-3 for the medium. Additionally lines showed high positive correlation between dry/fresh weight and oleanolic acid concentration in tissue. Using the Killiani mixture in acidic hydrolysis of oleanolic acid glycosides released free aglycones that were partially acetylated in such conditions.

6

Analysis of the Objectives and the Level of Implementation of the Spatial Development Plan of the Central Coal Region – the Lublin Coal Basin (CRW-LZW)

75%

Dmitruk M. T., Dmitruk M. T.

Archives of Mining Sciences

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2021

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vol. 66

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issue 4

7

Properties and analysis of the accuracy of estimation results obtained by the DiSTFA method in monitoring displacements and strains

75%

Kamiński W., Kamiński W.

Geodesy and Cartography

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2009

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issue 2

8

The toxicity of Cry1Ia5 transgenic soybean plants against Spodoptera littoralis

75%

Moghaieb R. E. A., Khashaba E. H., Abdel Azzim A. M.

Journal of Plant Protection Research

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2019

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vol. 59

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issue 2

9

Isolation and characterization of a DREB homolog gene from a local drought-tolerant maize cultivar

75%

Huynh T. T. H., Nguyen T. L., Luu H. L., Nguyen H. H., Le H. D., Bui M. M., Pham T. H., Doan T. B. T., Le T. T. H., Ha H. H., Nong V. H., Huynh T. T. H., Nguyen T. L., Luu H. L., Nguyen H. H., Le H. D., Bui M. M., Pham T. H., Doan T. B. T., Le T. T. H., Ha H. H., Nong V. H.

Acta Biologica Cracoviensia s. Botanica

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2019

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vol. 61

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issue 2

10

Трансформації традиційної різдвяної обрядовості бойків українських Карпат на початку ХХІ століття (Transformacії tradicіjjnoї rіzdvjanoї obrjadovostі bojjkіv ukraїnskikh Karpat na pochatku KHKHІ stolіttja)

39%

Громова (Gromova) Н. N.

Pomiędzy. Polonistyczno-Ukrainoznawcze Studia Naukowe

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2016

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issue 2

175-193

RU

В статье рассматриваются изменения формы и содержания рождественских обрядов этнографической группы украинцев, автохтонных жителей Карпат – бойков. Объясняются причины этих трансформаций. Доказывается, что при всех изменениях зимняя календарная обрядность бойков сохранена в наше время значительно лучше, чем обрядность других историко-этнографических областей Украины.

EN

The thesis researches Christmas rites in Bojkivshchyna during Ukraine’s independence and is based upon analysis of scientific literature and a large amount of information sources. The author found out that motivation for many Christmas ceremonies was changed or lost; many rites cease to be actively used altogether. However it is proved that the basis of Christmas rites in Bojkivshchyna is retained better if compared to other Ukrainian regions. The paper describes and analyses reasons for changes and transformations of the traditional Bojkos’ winter rituals.

Refine search results

Studies on the transformation of calcium sulphate dihydrate to hemihydrate in the wet process phosphoric acid production

Selected problems in the process of transformation of the right of perpetual usufruct into ownership title to real properties

New Regulations on Transforming the Right of Perpetual Usufruct into Ownership Title

The Effect of Chromium Addition on Physical Properties of Cu-Al Based High Temperature Shape Memory Alloy

Production of oleanolic acid glycosides by hairy root established cultures of Calendula officinalis L.

Analysis of the Objectives and the Level of Implementation of the Spatial Development Plan of the Central Coal Region – the Lublin Coal Basin (CRW-LZW)

Properties and analysis of the accuracy of estimation results obtained by the DiSTFA method in monitoring displacements and strains

The toxicity of Cry1Ia5 transgenic soybean plants against Spodoptera littoralis

Isolation and characterization of a DREB homolog gene from a local drought-tolerant maize cultivar