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Wyszukujesz frazę "HCl" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Effects of creatine hydrochloride supplementation on physical performance and hormonal changes in soldiers
Autorzy:
Tayebi, Mohammad Milad
Yousefpour, Mitra
Ghahari, Laya
Powiązania:
https://bibliotekanauki.pl/articles/1932984.pdf
Data publikacji:
2021-05-19
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
creatine
performance
HCl
hormones
Opis:
Purpose: The aim of this study was to examine the effects of 2 weeks of creatine hydrochloride (CrHCl) supplementation on physical performance and hormonal changes in army soldiers. Materials: Eighteen male army soldiers were randomly assigned in a double-blind fashion to either a CrHCl (n=9) or placebo (Pl) (n=9) groups. CrHCl group costumed 3g of creatine per day, whereas Pl group was given dextrose. Before and after supplementation period, the subjects performed a battery of performance tests including one repletion maximum (1RM) of bench press and back squat, vertical jump (VJ) and Wingate anaerobic test. In addition, blood samples were obtained to determine changes in testosterone and cortisol concentrations per and post supplementation. Results: There were significant increases in VJ, peak and mean power, and 1RM back squat test following the 2 weeks of CrHCl supplementation (p < 0.05) without any significant change for the Pl group. In addition significant changes were observed in testosterone and cortisol concentrations from before to after supplementation in CrHCl group (p < 0.05) and compared with Pl group (p=0.001). Conclusions: In conclusion, the present study indicates that CrHCl supplementation can improve VJ, power performance, 1RM back squat and hormonal changes in army soldiers.
Źródło:
Physical Activity Review; 2021, 1, 9; 93-99
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recovery of HCL from chloride leach solution of spent HDS catalyst by solvent extraction
Autorzy:
Banda, R.
Nguyen, T.H.
Lee, M.S.
Powiązania:
https://bibliotekanauki.pl/articles/185588.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
HCl
extraction
stripping
recovery
TEHA
wydobycie
Opis:
In the present work, amine based extractant and its mixture with cationic and solvating extractants were tested for the extraction of HCl from chloride solution containing Al(III). The chloride feed solution resulted from the leaching of spent HDS (hydro-desulfurization) catalysts. For this purpose, amine extractants, such as TOA (trioctyl amine), Alamine 336 (a mixture of tri-octyl/decyl amine), Alamine 308 (tri-isooctyl amine), and TEHA (tri 2-ethylhexyl amine) were used and the extraction and stripping behavior of HCl was compared. The extracted HCl was easily stripped from loaded TEHA phase, when compared with the other tested tertiary amine system. Solvent extraction reaction of HCl by TEHA was determined from the extraction data. Unlike TOA and Alamine 336, adding cationic extractant to TEHA had negligible effect on the extraction and stripping of HCl. In our experimental ranges, no Al was extracted by amines and pure HCl was recovered. MaCabe-Thiele diagrams for the extraction and stripping of HCl by TEHA were constructed.
Źródło:
Chemical and Process Engineering; 2013, 34, 1; 153-163
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Composite Barrier to Control the Corrosion of Mild Steel in Oil Well
Autorzy:
Singh, Rajesh Kumar
Thakur, Manjay Kumar
Kumar, Parshun
Powiązania:
https://bibliotekanauki.pl/articles/1030680.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
HCl
Mild steel
Saline water
composite barrier
filler
thermal parameters
Opis:
Mild steel is a very important engineering metal. Petrochemical industries are used bulk amount for their various purposes like recovery of crude oil, refinery units and transportation. Crude oil is a very highly viscous liquid for the opening of the month well strong HCl acid and saline water is used. They produce hostile environment of mild steel. Gaseous substances like CO2 and SO2 gases are found into the well of petroleum. Large amount of saline water are used during recovery of crude oil in this water CO2 and SO2 are dissolved to produce H2CO3 and H2SO4. These acids create an acidic medium of mild steel. Saline waters have possessed Cl¯ ions. It produces ambient environment for mild steel. The solution of salty water contains dissolve oxygen which develop corrosive environment of mild steel. These major corrosive substances are available during recovery of crude oil and they form corrosion cell with base metal. Metal produces galvanic, pitting, stress, crevice, intergranular corrosion. Nanocaoting and filler methods are used to protect metal in such un-friendly environment. The corrosion rate of metal was calculated by weight loss experiment in absence and presence of nanocoating and filler materials. The synthesized organic compound octahydrodibenzo[a,d][8]annulene-5,12-dihydrazone is applied for nanocoating and MgS as filler. The coating and filling works were completed by chemical vapour deposition and nozzle spray method. Potentiostat used for determination corrosion potential and corrosion current density. The surface adsorption was studied by thermal parameters like activation energy, heat of adsorption, free energy, enthalpy and entropy. The thermal parameters results were shown that coating and filler compounds were adhered with base metal by chemical bonding. The thermal results were calculated by Arrhenius equation and Langmuir isotherm. The coating and the filler substance formed composite barrier with metal and developed a protective barrier for the corrosive substances.
Źródło:
World Scientific News; 2020, 139, 2; 155-172
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Affective Computing-A Rationale for Measuring Mood With Mouse and Keyboard
Autorzy:
Zimmermann, P.
Guttormsen, S.
Danuser, B.
Gomez, P.
Powiązania:
https://bibliotekanauki.pl/articles/90061.pdf
Data publikacji:
2003
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
affective computing
mood
emotions
HCl
klawiatura
pozycja przy pracy
komputer
zagrożenia zdrowia
emocjonalność
psychologia pracy
Opis:
Emotions are an increasingly important factor in Human-Computer Interaction (HCI). Up to the present, emotion recognition in HCI implies the use of explicit or intrusive methods, for example, video cameras or physiological measurements. We are developing and evaluating a method for the measurement of affective states through motor-behavioral parameters from standard input devices (mouse and keyboard).
Źródło:
International Journal of Occupational Safety and Ergonomics; 2003, 9, 4; 539-551
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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