The impact of dance on human health

Introduction: Dancing is one of the many forms of physical activity. Dance performs a wide variety of functions, because on the one hand it satisfies the spiritual and aesthetic experience, and on the other hand, it can be a cultural entertainment or a form of physical fitness training. Moreover, dance has pedagogical values, shapes a person's personality, motor skills, develops the mind, and is a very good educational tool for children. Dance is a form of exercise and this prevents civilization diseases such as obesity, overweight, atherosclerosis, hypertension, and diabetes. Therefore, in order to maintain the well-being and health of the body, it is very important to take up physical activity in your free time. The aim of the study: The aim of the study is to find out how dancing affects students' health and to compare the results of the research with the available knowledge. Material and method: The paper uses standard criteria as the research method. Additionally, during the literature review on PubMed and Google Scholar platforms, keywords such as dance, choreotherapy, training. Summary: The results of our research are comparable with the results of other studies. They indicate the positive influence of dance on human health. It affects not only the physical sphere, but also the mental one. Dance is increasingly used in the treatment of various diseases. Dancers see the difference in improving their body flexibility, coordination and strength.In additional, dancing affects the feeling of greater body awareness during movement

MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration

[EN] MCM-22, MCM-36, and ITQ-2 zeolites with the intended Si/Al molar ratios of 15, 25, and 50 were synthetized and tested as catalysts for dehydration of methanol to dimethyl ether and dehydration of ethanol to diethyl ether and ethylene. The surface concentration of acid sites was regulated by the synthesis of zeolite precursors with different aluminum content in the zeolite framework, while the influence of porous structure on the overall efficiency of alcohol conversion was analyzed by application of zeolitic materials with different types of porosity-microporous MCM-22 as well as microporous-mesoporous MCM-36 and ITQ-2. The zeolitic samples were characterized with respect to their: chemical composition (ICP-OES), structure (XRD, FT-IR), texture (N-2 sorption), and surface acidity (NH3-TPD). Comparison of the catalytic activity of the studied zeolitic catalysts with other reported catalytic systems, including zeolites with the similar Si/Al ratio as well as gamma-Al2O3 (one of the commercial catalysts for methanol dehydration), shows a great potential of MCM-22, MCM-36, and ITQ-2 in the reactions of alcohols dehydration.This research was funded by National Science Centre-Poland grant number 2016/21/B/ST5/00242. U.D. acknowledges to the Spanish Government grant number MAT2017-82288-C2-1-P. The research was partially done using the equipment purchased from the funds of European Regional Development Fund, Polish Innovation Economy Operational Program, grant numberPOIG.02.01.00-12-023/08.Marosz, M.; Samojeden, B.; Kowalczyk, A.; Rutkowska, M.; Motak, M.; Díaz Morales, UM.; Palomares Gimeno, AE.... (2020). MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration. 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Role of Donor Activating KIR–HLA Ligand–Mediated NK Cell Education Status in Control of Malignancy in Hematopoietic Cell Transplant Recipients

AbstractSome cancers treated with allogeneic hematopoietic stem cell transplantation (HSCT) are sensitive to natural killer cell (NK) reactivity. NK function depends on activating and inhibitory receptors and is modified by NK education/licensing effect and mediated by coexpression of inhibitory killer-cell immunoglobulin-like receptor (KIR) and its corresponding HLA I ligand. We assessed activating KIR (aKIR)-based HLA I–dependent education capacity in donor NKs in 285 patients with hematological malignancies after HSCT from unrelated donors. We found significantly adverse progression-free survival (PFS) and time to progression (TTP) in patients who received transplant from donors with NKs educated by C1:KIR2DS2/3, C2:KIR2DS1, or Bw4:KIR3DS1 pairs (for PFS: hazard ratio [HR], 1.70; P = .0020, Pcorr = .0039; HR, 1.54; P = .020, Pcorr = .039; HR, 1.51; P = .020, Pcorr = .040; and for TTP: HR, 1.82; P = .049, Pcorr = .096; HR, 1.72; P = .096, Pcorr = .18; and HR, 1.65; P = .11, Pcorr = .20, respectively). Reduced PFS and TTP were significantly dependent on the number of aKIR-based education systems in donors (HR, 1.36; P = .00031, Pcorr = .00062; and HR, 1.43; P = .019, Pcorr = .038). Furthermore, the PFS and TTP were strongly adverse in patients with missing HLA ligand cognate with educating aKIR-HLA pair in donor (HR, 3.25; P = .00022, Pcorr = .00045; and HR, 3.82; P = .027, Pcorr = .054). Together, these data suggest important qualitative and quantitative role of donor NK education via aKIR-cognate HLA ligand pairs in the outcome of HSCT. Avoiding the selection of transplant donors with high numbers of aKIR-HLA-based education systems, especially for recipients with missing cognate ligand, is advisable

Vermiculite-based catalysts with nanometric oxide active phase for the oxidation of phenols

Materiał wyjściowy do syntezy katalizatorów stanowił wermikulit naturalny oraz poddany działaniu stężonego kwasu azotowego(V). W czasie modyfikacji kwasowej określono ubytek glinu, żelaza, magnezu i krzemu. Synteza katalizatorów opierała się na wymuszonej hydrolizie hematytu w środowisku kwaśnym w obecności nośnika. Wykonano również serię katalizatorów, w których część żelaza podstawiono miedzią. Ponadto, przeprowadzono sorpcję kompleksu miedzi z etylenodiaminą na modyfikowanym kwasowo wermikulicie. Gotowe katalizatory zostały scharakteryzowane następującymi metodami: spektroskopia odbicia rozproszonego (UV-Vis-DRS), niskotemperaturowa sorpcja azotu, dyfrakcja rentgenowska (XRD), spektroskopia odbicia rozproszonego w podczerwieni (DRIFT). Aktywność otrzymanych katalizatorów badano w reakcji utleniania fenolu w fazie ciekłej, pod ciśnieniem atmosferycznym i w podwyższonej temperaturze. Określono wpływ sposobu dodawania utleniacza na przebieg testu katalitycznego. Mniejsze porcje wydłużają czas potrzebny do osiągnięcia wysokiego stopnia przereagowania fenolu, ale też zastosowana metoda pozwala na ograniczenie powstawania produktów ubocznych. Dodatek miedzi do katalizatora powoduje skrócenie czasu, w którym konwersja fenolu osiąga wysokie wartości, jednak sprzyja tworzeniu się ubocznych produktów utleniania fenolu.The starting material for the synthesis of catalysts was natural vermiculite and vermiculite treated with concentrated nitric acid. During the acid modification, loss of aluminum, iron, magnesium and silicon was measured. Synthesis of catalysts based on forced hydrolysis of hematite in acidic solution was performed in the presence of vermiculite. A series of catalysts containing iron partially substituted of copper were prepared. In addition, catalysts were prepared by a sorption of copper complex with ethylenediamine on the acid-modified vermiculite. Obtained catalysts were characterized by the following methods: diffuse reflectance spectroscopy (UV-Vis-DRS), low-temperature nitrogen sorption, X-ray diffraction (XRD), diffuse reflectance infrared spectroscopy (DRIFT). The activity of the catalysts was tested in the oxidation of phenol in the liquid phase at atmospheric pressure and at elevated temperature. Also the influence of the addition rate of oxidant on the catalytic performance was tested. Smaller portions extended the time required to achieve a high degree of conversion of phenol, but also reduced the formation of side products. The addition of copper to the catalyst shortened the time in which the conversion of phenol reached high values, but also favors the formation of by-products in the oxidation of phenol