Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 6

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
EN
Background. Excursions in the kindergarten improve a comprehensive development of children as they create multi-sensory learning conditions, contribute to the development of interests and activities of social and cultural nature, are a source of physical activity, as well as emotional and aesthetic experience. They play a large part in preparing a child for the future role of a tourist, constituting its first contact with the forms of tourism and sightseeing. Material and methods. The aim of the research was to learn the opinion of kindergarten teachers and parents on the role of excursions in the development of preschool age children. The study concept was based on the method of a diagnostic survey. Results. For the majority of teachers excursion plays an important role in children’s cognitive development, forming their interests and care for health and physical fitness, shaping social, moral and patriotic behaviours. Parents give excursions mainly recreational importance. Conclusions. Both teachers and parents are aware of the significant impact of excursions on children’s development. However, there are units among the surveyed who consider touring a very difficult organizational form of activities for children and therefore they often change the opportunity of learning directly into forms of obtaining less significant, indirect knowledge. Teachers and parents should be encouraged to and provided with conditions allowing for frequent trips as a means of the full development of a child.
EN
The decisive significance of the process of health promotion in school is to make students aware of the fact that health is a value that should be developed and strengthened as it is good in itself and it allows to obtain other values. The person who is best to assist a student in creating health potential is a competent, committed teacher with a rich personality. Teacher, as a guide to health education, introduces students to the aims of the actions for health and provides arguments which demonstrate the benefits of taking care of it. Moreover, a teacher prepares students to be capable of using the attained knowledge in the daily life and make decisions together with taking action to multiply their own health as well as others.
PL
W procesie promowania zdrowia w szkole decydujące znaczenie ma uświadomienie uczniom tego, że zdrowie jest wartością, którą należy rozwijać i umacniać, gdyż jest ono dobrem samym w sobie oraz umożliwia uzyskiwanie innych wartości. Osobą, która w najlepszy sposób wspomoże ucznia w tworzeniu potencjału zdrowia, jest kompetentny, zaangażowany, o bogatej osobowości nauczyciel. Jako przewodnik po edukacji zdrowotnej, zapoznaje uczniów z celami działań na rzecz zdrowia i dostarcza argumentów, które świadczą o korzyściach płynących z dbania o nie. Przygotowuje uczniów do tego, aby potrafili wykorzystywać zdobytą wiedzę w codziennym życiu oraz dokonywali wyborów i podejmowali decyzje i działania na rzecz pomnażania zdrowia własnego i innych.
EN
Caffeine is well known alkaloid chemical compound belonging to the methyl-xanthines group. It is an active substance that is found in many cosmetic products, as it has a stimulating action on both the central nervous system and the metabolism. Commercially available topical formulations normally contain 3% of caffeine and 7% anticellulite products. The aim of our work was to investigate the properties of four cream preparations. These consisted of 5% of caffeine and one of four different emulsifiers (GSC, Sodium polyacrylate, Emulsifying Base, MDS). In our work, we compared the physical properties (spreadability, slip and tenacity), the rheological structure of the resulting creams and the caffeine release from the obtained preparations. The results showed that the properties of these creams and their drug release depended upon the kind of the emulsifiers utilised. What is more, all preparations have a pseudoplastic character of flow and most of them have significant thixotropy. Furthermore, the amount of released caffeine is the largest from the MDS cream, and this emulsifier seems to be the most optimal in all the examined items.
4
Content available remote Physical properties and caffeine release from creams prepared with different oils
38%
EN
Caffeine is a methylxanthine typically found in the Coffee Arabica L plant. Generally, caffeine is well-known as a orally administered mild stimulant of the central nervous system. However, for cosmetic purpose, caffeine is an active compound ingredient, at 7% concentration, in several anticellulite products. The efficiency of this mode of delivery is not fully understood. Hence, the aim of the study was to ascertain the effectiveness of particular carriers to release this ingredient. In so doing, we prepared six creams based upon different oils (Sesame oil, Rice oil, Walnut oil, Coconut oil, Sweet almond oil and Jojoba oil), containing 5% of caffeine, and compared the release of the substance from the obtained preparations. Initially, all of the creams were subjected to a variety of physical tests, among these being for slippage and spreadability. Furthermore, their rheological properties were evaluated. Subsequently, the creams were tested for caffeine release. In the slippage and spreadability tests, the coconut oil-based cream was revealed as having the best parameters. However, the rheological tests showed that all of the preparations had the pseudoplastic character of flowing according to the Ostwald de Waele power law model. The power low index (n) for all the preparations was from 0.2467-0.3179 at 20°C and 0.2821-0.3754 at 32°C. At 20°C, the Sesame oil-, Walnut oil-, Sweet almond oil- and Jojoba oil-based creams were thixotropic, but at 32°C, thixotropy appeared only in the Walnut oil-based creams. The release studies, conducted by way of an extracting chamber (according to Polish Pharmacoeia IX) in the Paddle Apparatus (according to Polish Pharamcopoeia IX), showed that the amount of released caffeine is the largest in the case of Jojoba oil-based cream, at 85.23% ± 0.8% (SD), and the least in the case of Coconut oil-based cream, at 62,78%± 0.87% (SD).
EN
In this study, the stability of 10% hydrogen peroxide aqueous and non-aqueous solutions with the addition of 6% (w/w) of urea was evaluated. The solutions were stored at 20°C, 30°C and 40°C, and the decomposition of hydrogen peroxide proceeded according to first-order kinetics. With the addition of the urea in the solutions, the decomposition rate constant increased and the activation energy decreased. The temperature of storage also affected the decomposition of substance, however, 10% hydrogen peroxide solutions prepared in PEG-300, and stabilized with the addition of 6% (w/w) of urea had the best constancy.
EN
Walnut (Juglans regia L., fam. Juglandaceae) fruit is found to be very rich in phenolic compounds and thus to show wide spectrum of biological activities like antioxidant, anti-inflammatory, or antitumour properties. Ethanol or methanol are preferentially used for preparation of walnut extracts for cosmetic applications. However, it is commonly known that alcohol causes dehydration and redness of the skin. The aim of this work was to prepare aqueous extract of undamaged walnut seeds rich in pellicles and to evaluate its antioxidant, anti-apoptotic, anti-inflammatory, and anti-aging properties in vitro. Conducted research clearly demonstrated that simple water extraction of undamaged kernels with pellicles allows to obtain rich in phenolic compounds (36-38 mg per g of lyophilisate) walnut extract, which protects fibroblasts and keratinocytes against oxidative stress induced by UVB dose of 35 mJ/cm2 (5-6-h exposure on a sunny day), protects keratinocytes against UVB-induced apoptotic death, limits the development of the inflammation in epidermis, and also possesses ability to inhibit collagenase and elastase. Thus, obtained aqueous walnut extract (at relatively low concentration of 5 µg/ml) is found to be a promising compound of sunscreen and anti-aging cosmetic formulations.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.