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1

Characteristics of humic acids extracted from soils by the capillary electrophoresis

100%

Grzelakowska A., Christy A.

Polish Journal of Soil Science

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2003

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tom 36

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nr 2

145-152

Humic acids have an important role in the soils. When specific structures of which little is known, are studied, one should use the latest analitycal methods. So far the method of fractionation by electrophoretic mobility has not been very popular in the research studies on humic substances. However, it seems that it is possible to study humification processes and subtle changes in the structure of the material investigated using capillary electrophoresis. On the basis of our experience, some soils representing various types were selected as study material. Electrophoretic separation (by means of buffer solutions with various pH-values) was carried out for the humic acids extracted from the soils selected. The results obtained allowed for the determination of differences in the humic acids structures due to their origin.

2

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The impact of credit access and cooperative membership on food security of rural households in South-Western Nigeria

75%

Kehinde A. D., Kehinde M. A.

Journal of Agribusiness and Rural Development

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2020

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tom 3[57]

3

Determinants of food security among rural households in Southwestern Nigeria: USDA food security questionnaire core module approach

75%

Aboaba K. O., Fadiji D. M., Hussayn J. A.

Journal of Agribusiness and Rural Development

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2020

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tom 2[56]

4

Current techniques in protein glycosylation analysis. A guide to their application

75%

Merry T.

Acta Biochimica Polonica

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1999

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tom 46

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nr 2

The importance of glycosylation in biological events and the role it plays in glycoprotein function and structure is an area in which there is growing interest. In order to understand how glycosylation affects the shape or function of a protein it is however important to have suitable techniques available to obtain structural information on the oligosaccharides attached to the protein. For many years the complexity of the structures required sophisticated analytical techniques only available to a few specialist laboratories. In many cases these techniques were not available or required a large amount of material and therefore the number of glycoproteins which were fully characterised were relatively few. In recent years there have been substantial developments in the analysis of glycosylation which has significantly changed the capability to fully characterise molecules of biological interest. A number of different techniques are available which differ in terms of their complexity, the amount of information which is available from them, the skill needed to perform them and their cost. It is now possible for many laboratories who do not specialise in glycosylation analysis to obtain some information although this may be incomplete. These developments do, however, also make complete characterisation of a glycoprotein a much less daunting task and in many cases this can be performed more easily and with less starting material than was previously required. In this review a summary will be given of current techniques and their suitability for different types of analysis will be considered.

5

Oxidation of a lignin model compound of benzyl-ether type linkage in water with H2O2 under an oxygen atmosphere catalyzed by Co(Salen)

63%

Zhou X. F., Qin J. X., Wang S. R.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

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2011

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tom 54

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nr 186

The catalytic properties of Cobalt salen? complex in the oxidation of a lignin model compound [veratrylglycerol-β-guaiacyl-α,γ-dimethylether, VGD] have been investigated in order to obtain the mechanistic aspects of the reaction between Co(salen) and VGD under an oxygen atmosphere using hydrogen peroxide as an oxidant. VGD was found to undergo structural changes in response to the catalytic reaction as characterised by different analytical techniques (FT-IR, H-1 NMR and GC-MS), yielding 2-methoxy phenol and biphenyl. A mechanism for the oxidation of VGD was postulated.

6

Endotoxin exposure in sewage treatment workers: investigation of exposure variability and comparison of analytical techniques

63%

Spaan S., Smit L. A. M., Eduard W., Larsson L., Arts H. J. J. M., Wouters I. M., Heederik D. J. J.

Annals of Agricultural and Environmental Medicine

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2008

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tom 15

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nr 2

7

Heavy metals in human bones - civilization's poison

63%

Baranowska I.

Polish Journal of Environmental Studies

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1993

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tom 02

|

nr 4

8

Zasoby intelektualne firmy i inteligentny system informacyjny strategii marketingowej

51%

Rutkowski I. P.

Marketing i Rynek

|

2003

|

tom 10

|

nr 01

8-13

9

Zastosowanie wybranych metod analitycznych do oceny zawartości substancji organicznej w komponentach nawozowych

51%

Huculak-Maczka M., Hoffmann K., Hoffmann J.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2009

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tom 537

Do niekonwencjonalnych źródeł substancji organicznej można zaliczyć rolnicze i przemysłowe odpady. Wykorzystanie ich jako komponentów w produkcji preparatów mineralno-organicznych jest racjonalnym sposobem ich zagospodarowania. Oceny możliwości wykorzystania ich w rolnictwie dokonano na podstawie określenia zawartości substancji organicznej. Do tego celu zastosowano wybrane metody analityczne. Podczas oznaczania węgla organicznego w niekonwencjonalnych substancjach i odpadach organicznych najbardziej zasadne wydaje się zastosowanie metody termicznej analizy różnicowej. Metoda ta pozwala nie tylko na obserwację efektów energetycznych, zmian wagowych badanych substancji czy identyfikacji ich składu, ale również na ich termiczną utylizację i możliwość zagospodarowania przy niższych nakładach energetycznych.

10

Providing high-quality measurement data in analytical system of air pollution monitoring and their key importance for smart cities residents

51%

Czechowski P. O., Badyda A. J., Majewski G., Oniszczuk-Jastrzabek A., Kraszewski A. K., Rogula-Kozlowska W., Owczarek T.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2017

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tom 49

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nr 4

11

Zastosowanie predykcyjnego modelu analitycznego w doskonaleniu działań marketingowych firm

38%

Tarka P.

Marketing i Rynek

|

2012

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tom 19

|

nr 02

Ograniczanie wyników

Characteristics of humic acids extracted from soils by the capillary electrophoresis

The impact of credit access and cooperative membership on food security of rural households in South-Western Nigeria

Determinants of food security among rural households in Southwestern Nigeria: USDA food security questionnaire core module approach

Current techniques in protein glycosylation analysis. A guide to their application

Oxidation of a lignin model compound of benzyl-ether type linkage in water with H2O2 under an oxygen atmosphere catalyzed by Co(Salen)

Endotoxin exposure in sewage treatment workers: investigation of exposure variability and comparison of analytical techniques

Heavy metals in human bones - civilization's poison

Zasoby intelektualne firmy i inteligentny system informacyjny strategii marketingowej

Zastosowanie wybranych metod analitycznych do oceny zawartości substancji organicznej w komponentach nawozowych

Providing high-quality measurement data in analytical system of air pollution monitoring and their key importance for smart cities residents

Zastosowanie predykcyjnego modelu analitycznego w doskonaleniu działań marketingowych firm