Search results for: D. Maciejewska

Items from 1 to 14 out of 14 results

article

Fluoride content in the hair in dependence of the place of residence, sex, dietary habits and anthropometric data

A. Lukomska, E. Stachowska, E. Rebacz-Maron, D. Maciejewska, more

Journal of Elementology > 2018 > 23 > 3

article

The fatty acids content in popular bars

M. Wiercioch, S. Szelag-Pieniek, K. Peszko, I. Baranowska-Bosiacka, more

Polish Journal of Natural Sciences > 2018 > 33 > 4

In view of the significance of qualitative fatty acid profile, the aim of this research was to determine and compare the content of fatty acids in two groups popular snacks which were classified into two product groups: healthy or unhealthy. Gas chromatograph was used to analyze the fatty acid profile. The study showed that the products classified as ‘unhealthy’ generally contained more fatty acids...

article

The short chain fatty acids and lipopolysaccharides status in sprague-dawley rats fed with high-fat and high-cholesterol diet

D. Maciejewska, K. Skonieczna-Zydecka, A. Lukomska, I. Gutowska, more

Journal of Physiology and Pharmacology > 2018 > 69 > 2

article

High glycemic index diet in PCOS patients. The analysis of IGF I and TNF-α pathways in metabolic disorders

M. Szczuko, M. Zapałowska-Chwyć, D. Maciejewska, A. Drozd, more

Medical Hypotheses > 2016 > 96 > C > 42-47

article

The Influence of Fluorine on the Disturbances of Homeostasis in the Central Nervous System

K. Dec, A. Łukomska, D. Maciejewska, K. Jakubczyk, more

Biological Trace Element Research > 2017 > 177 > 2 > 224-234

Fluorides occur naturally in the environment, the daily exposure of human organism to fluorine mainly depends on the intake of this element with drinking water and it is connected with the geographical region. In some countries, we can observe the endemic fluorosis—the damage of hard and soft tissues caused by the excessive intake of fluorine. Recent studies showed that fluorine is toxic to the central...

chapter

Hexadecyltrimethyl ammonium sulphate-water system. Phase diagram and micellization

D. Maciejewska, A. Khan, B. Lindman

Progress in Colloid and Polymer Science > New Trends in Colloid Science > 174-179

The binary phase diagram of the hexadecyltrimethylammonium sulphate-water system has been determined by ²H NMR and polarized microscopy methods. At 295 K, the phase diagram comprises a large isotropic solution region (up to 40.5 % surfactant) and isotropic cubic, I₁, (41–46.5 °/o) and anisotropic hexagonal, E, (51–60 °/o) liquid crystalline phases. On increasing the temperature, the I₁ phase dissappears...

article

Caloric restriction diet (CR diet) or mediterranean diet (MD) - which is the best choice for former athletes?

M. Czerwinska, J. Holowko, D. Maciejewska, P. Wysokinski, more

Central European Journal of Sport Sciences and Medicine > 2016 > 13 > 1

article

The Fluoride Content of Yerba Mate Depending on the Country of Origin and the Conditions of the Infusion

A. Łukomska, K. Jakubczyk, D. Maciejewska, I. Baranowska-Bosiacka, more

Biological Trace Element Research > 2015 > 167 > 2 > 320-325

There are many reports of the positive effect of yerba mate on the human body. Elemental composition analysis of yerba mate revealed the presence of many microelements and macroelements, but there is no literature data referencing the content and the effect of the method of preparing the yerba mate infusion on the amount of released fluoride and thus the amount of this element supplied to the human...

article

Apolipoprotein E4 allele is associated with substantial changes in the plasma lipids and hyaluronic acid content in patients with nonalcoholic fatty liver disease

E. Stachowska, D. Maciejewska, P. Ossowski, A. Drozd, more

Journal of Physiology and Pharmacology > 2013 > 64 > 6

article

The structure of some 1-arylazo-2-naphthylamines and their N-acetamides deduced from ¹ ³ C CP/MAS NMR, X-ray crystallography and DFT theoretical calculations

D. Maciejewska, I. Wolska, V. Kowalska

Journal of Molecular Structure > 2004 > 693 > 1-3 > 27-34

The crystal structure of 1-(3'-methylphenylazo)-2-naphthylamine 1 was determined by the X-ray diffraction method. No dynamic disorder was observed in the crystal of 1, and the azo group adopts trans azo conformation with six-membered ring formed by the intramolecular hydrogen bond. In the solid state, ¹ ³ C CP/MAS NMR spectrum of its acetamide derivative 2 the double signals were found,...

article

13C CP MAS NMR, FTIR, X-ray diffraction and PM3 studies of some N-(ω-carboxyalkyl)morpholine hydrohalides

Z. Dega-Szafran, I. Gąszczyk, D. Maciejewska, M. Szafran, more

Journal of Molecular Structure > 2001 > 560 > 1-3 > 261-273

N-(ω-carboxyalkyl)morpholine hydrochlorides, OC₄H₈N(CH₂)_nCOOH·HCl, n=1–5, were obtained and analyzed by ¹³C cross polarization (CP) magic angle spinning (MAS) NMR, FTIR and PM3 calculations. The structure of N-(3-carboxypropyl)morpholine hydrochloride (n=3) has been solved by X-ray diffraction method at 100K and refined to the R=0.031. The crystals are monoclinic, space group P2₁/c, a=14.307(3), b=9...

article

Structure of 4-(4-methoxyphenyl)hexahydro-1H,3H-pyrido[1,2-c]pyrimidine in the solid state

D Maciejewska, F Herold, I Wolska

Journal of Molecular Structure > 2000 > 553 > 1-3 > 73-77

The symmetry-independent part of the unit cell of 1, C₁₅H₁₆N₂O₃, consists of two molecules of 1a, 1b. The variations in their geometry affect the location of the resonances in the ¹³C CP MAS NMR spectrum in different ways. The calculations of shielding constants on the ab initio level of theory allowed for reliable assignments of signals.

article

Structure and Hydrogen Bonding of Solid N1-Alkyl-N2-(2-hydroxy, 4- or 5-methylphenyl)thioureas

I. Wawer, R. Anulewicz-Ostrowska, D. Maciejewska, V. Koleva

Polish Journal of Chemistry > 2000 > Vol. 74, nr 6 > 823-835

Crystalline N1-alkyl-N2-arylthioureas with ortho hydroxyl and para or meta methyl substituents to the phenyl ring were studied by single crystal X-ray diffraction, IR and solid state 13C cP MAS NMR. Two different modes of association were found: i) intermolecular N1H...S bonds and N2H not involved in hydrogen bonding in N1-methyl-N2-(2-hydroxy, 5-metylphenyl)thuiourea 1, ii) cyclic dimers with two...

article

(13)C CP MAS NMR study of some 4,4'-disubstituted-trans-azobenzenes

D. Maciejewska, V. Koleva, I. Wawer

Polish Journal of Chemistry > 1998 > Vol. 72, nr 12 > 2531-2536

Azobenzenes with para-dimethylamino group at aromatic ring and various para substitutes to another phenyl have been studied by (13)C CP MAS NMR spetroscopy followed by semi-empirical AMI MO calculations. The locked trans-configuration around N=N bond in the state results in non-equivalence of ortho carbons (C2 and C6, also C2' and C6') and the diference in chemical shifts is 12.9-22.0 ppm. The separation...

Filter options

Publication date

Set your own date range

INFONA - science communication portal

Search results for: D. Maciejewska

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options