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Wyszukujesz frazę "“1% mechanism”" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Konkurencja na rynku jednego procenta
Competition on the market of one percent
Autorzy:
Czetwertyński, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/533454.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
public benefit organizations
“1% mechanism”
public benefit
Opis:
This article attempts to present and explain the functioning of the market mechanism of the market of one percent. The article discusses the problem of the unintended consequences of intended actions, which were induced in to the Polish tax system by “1% mechanism”. It is about the possibility of donating 1% income tax due from individual taxpayers to public benefit organizations. As a result of the implemented regulations a market of one percent has been created, on which public benefit organizations conduct competitive struggle for money which taxpayers can dispose. This article aims to explore the mechanism of competition on the market of one percent and understand methods of competitive struggle. The article makes the hypothesis that the public benefit organizations can either alone carry the burden of competition for the 1% tax, or offload it onto their mentee. The article makes references to the statistics of the Ministry of Finance and the implementation and financial report of investigated organizations.
Źródło:
Społeczeństwo i Ekonomia; 2016, 1(5); 69-84
2353-8937
Pojawia się w:
Społeczeństwo i Ekonomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of decomposition of dichloroethylenes (trans-DCE, cis-DCE, 1,1-DCE)/air under electron beam irradiation
Autorzy:
Sun, Y.
Chmielewski, G.
Bułka, S.
Zimek, Z.
Nichipor, H.
Powiązania:
https://bibliotekanauki.pl/articles/146568.pdf
Data publikacji:
2007
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
trans-dichloroethylene
cis-dichloroethylene
1,1-dichloroethylene
electron beam
decomposition
mechanism
Opis:
On the basis of the experimental results, computer simulations of decomposition of dichloroethylenes for three isomers (trans-DCE, cis-DCE, 1,1-DCE) in air under electron beam were carried out. Computer code “Kinetic” and “Gear” method were used. Calculation results well agree with the experimental results. Decomposition efficiency of DCE is mainly determined by Cl- dissociated secondary electron attachment, followed by Cl radical addition reaction with DCE.
Źródło:
Nukleonika; 2007, 52, 2; 59-67
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling studies of potato nucleoside triphosphate diphosphohydrolase NTPDase1: an insight into the catalytic mechanism
Autorzy:
Kozakiewicz, Anna
Neumann, Piotr
Banach, Mariusz
Komoszyński, Michał
Wojtczak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1040830.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
potato apyrase
NTPDase1
enzymatic mechanism
homology modeling
Opis:
Nucleoside triphosphate diphosphohydrolase - NTPDase1 (apyrase, EC 3.6.1.5) was modeled based on sequence homology. The single polypeptide chain of apyrase is folded into two domains. The putative catalytic site with the apyrase conserved regions (ACR 1-5) is located between these two domains. Modeling confirmed that apyrase belongs to the actin superfamily of proteins. The amino acids interacting with the nucleoside triphosphate substrate and probably involved in the catalyzed hydrolysis were identified. The proposed two-step catalytic mechanism of hydrolysis involves Thr127 and Thr55 as potential nucleophilic factors responsible for the cleavage of the Pγ and Pβ anhydride bonds, respectively. Their action seems to be assisted by Glu170 and Glu78 residues, respectively. The presence of two nucleophiles in the active site of apyrase explains the differences in the hydrolytic activity between apyrases and other enzymes belonging to the NTPDase family.
Źródło:
Acta Biochimica Polonica; 2008, 55, 1; 141-150
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on safe disposal of cephalosporins based on kinetic pyrolysis mechanism
Autorzy:
Fan, Jiangxue
Zhang, Meng
Hou, Xiaofei
Wang, Fang
Bai, Mengyuan
Jiao, Ruoxi
Yang, Zhongyu
Duan, Erhong
Cheng, Fengfei
Zhou, Wen
Powiązania:
https://bibliotekanauki.pl/articles/27315672.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Distillation residues
Thermal analysis kinetics
Template “3-2-2”
Template “1+1”
Pyrolysis mechanism
Opis:
Based on the global goals for cleaner production and sustainable development, the pyrolysis behavior of cephalosporin residues was studied by TG-MS method. The influence of full temperature window on the safe disposal of residues was analyzed based on the “3-2-2” and “1+1” of thermal analysis kinetics, and the gas by-products of thermal degradation were monitored. Results showed that the pyrolysis of distillation residues were divided into low and high-temperature zones, including six stages. Maximum error rate (8.55%) by multiple scan rate was presented based on “3-2-2” pattern and maximum total fluctuation (33.7) by single scan rate was presented based on “1+1” pattern, which implied that the comprehensive multi-level comparison method was very reliable. The E value “E” of six stages showed an increasing trend ranging 166.8 to 872.8 kJ/mol. LgA(mean) was 27.28. Most mechanism function of stage 1, 2 were Z-L-T equation (3D), stage 3, 4, 6 were Avrami-Erofeev equation (AE3, AE4, AE2/3) and stage 5 was Reaction Order (O2). In addition, various small molecular micromolecule substances were detected such as C2H4O, C2H6, NH3, CH4, CO2 under full temperature windows and a possible pyrolysis path of residues was provided.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 4; 52--60
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of natural phenols on the catalytic activity of cytochrome P450 2E1
Autorzy:
Mikstacka, Renata
Gnojkowski, Jerzy
Baer-Dubowska, Wanda
Powiązania:
https://bibliotekanauki.pl/articles/1043696.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
resveratrol
tannic acid
polyphenols
inhibition kinetics
mechanism-based inhibition
CYP2E1
protocatechuic acid
Opis:
The effect of protocatechuic acid, tannic acid and trans-resveratrol on the activity of p-nitrophenol hydroxylase (PNPH), an enzymatic marker of CYP2E1, was examined in liver microsomes from acetone induced mice. trans-Resveratrol was found to be the most potent inhibitor (IC50 = 18.5 ± 0.4 mM) of PNPH, while protocatechuic acid had no effect on the enzyme activity. Tannic acid with IC50 = 29.6 ± 3.3 mM showed mixed- and trans-resveratrol competitive inhibition kinetics (Ki = 1 mM and 2.1 mM, respectively). Moreover, trans-resveratrol produced a NADPH-dependent loss of PNPH activity, suggesting mechanism-based CYP2E1 inactivation. These results indicate that trans-resveratrol and tannic acid may modulate cytochrome P450 2E1 and influence the metabolic activation of xenobiotics mediated by this P450 isoform.
Źródło:
Acta Biochimica Polonica; 2002, 49, 4; 917-925
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical reduction of nitrate by zerovalent iron nanoparticles adsorbed radiation-grafted copolymer matrix
Autorzy:
Ratnayake, S. Y.
Ratnayake, A. K.
Schild, D.
Maczka, E.
Jartych, E.
Luetzenkirchen, J.
Kosmulski, M.
Weerasooriya, R.
Powiązania:
https://bibliotekanauki.pl/articles/146536.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
1-pK Basic Stern Model
acid-driven surface-mediated process
Eley-Rideal like mechanism
priority contaminant
zerovalent iron nanoparticles
Opis:
This research specifically focused on the development of a novel methodology to reduce excess nitrate in drinking water utilizing zerovalent iron nanoparticles (nZVI)-stabilized radiation-grafted copolymer matrix. nZVI was synthesized by borohydrate reduction of FeCl3 and stabilized on acrylic acid (AAc)-grafted non-woven polyethylene/polypropylene (NWPE/PP-g-AAc) copolymer matrix, which was grafted using gamma radiation. The use of nZVI for environmental applications is challenging because of the formation of an oxide layer rapidly in the presence of oxygen. Therefore, radiation-grafted NWPE/PP synthetic fabric was used as the functional carrier to anchor nZVI and enhance its spreading and stability. The chemical reduction of nitrate by nZVI-adsorbed NWPE/PP-g-AAc (nZVI-Ads-NWP) fabric was examined in batch experiments at different pH values. At low pH values, the protective layers on nZVI particles can be readily dissolved, exposing the pure iron particles for efficient chemical reduction of nitrate. After about 24 h, at pH 3, almost 96% of nitrate was degraded, suggesting that this reduction process is an acid-driven, surface-mediated process. The nZVI-water interface has been characterized by the 1-pK Basic Stern Model (BSM). An Eley-Rideal like mechanism well described the nitrate reduction kinetics. In accordance with green technology, the newly synthesized nZVI-Ads-NWP has great potential for improving nitrate reduction processes required for the drinking water industry.
Źródło:
Nukleonika; 2017, 62, 4; 269-275
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protein modeling with reduced representation: statistical potentials and protein folding mechanism
Autorzy:
Ekonomiuk, Dariusz
Kielbasinski, Marcin
Kolinski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1041306.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
B1 domain of protein G
statistical potentials
folding mechanism
Monte Carlo simulations
high resolution lattice proteins
protein folding
Opis:
A high resolution reduced model of proteins is used in Monte Carlo dynamics studies of the folding mechanism of a small globular protein, the B1 immunoglobulin-binding domain of streptococcal protein G. It is shown that in order to reproduce the physics of the folding transition, the united atom based model requires a set of knowledge-based potentials mimicking the short-range conformational propensities and protein-like chain stiffness, a model of directional and cooperative hydrogen bonds, and properly designed knowledge-based potentials of the long-range interactions between the side groups. The folding of the model protein is cooperative and very fast. In a single trajectory, a number of folding/unfolding cycles were observed. Typically, the folding process is initiated by assembly of a native-like structure of the C-terminal hairpin. In the next stage the rest of the four-ribbon β-sheet folds. The slowest step of this pathway is the assembly of the central helix on the scaffold of the β-sheet.
Źródło:
Acta Biochimica Polonica; 2005, 52, 4; 741-748
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lead tolerance mechanisms in Robinia pseudoaccacia L. - an attempt to a practical approach
Mechanizmy tolerancji na ołów u Robinia pseudoaccacia L. i ich aspekt praktyczny
Autorzy:
Wińska-Krysiak, M.
Bernat, J.
Powiązania:
https://bibliotekanauki.pl/articles/11541679.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
Lead tolerance
tolerance mechanism
Robinia pseudoaccacia
practical approach
lead
glutathione
phytochelatin
root
RpPCS gene
RpGSH1 gene
soil contamination
Opis:
Robinia pseudoaccacia plants grown hydroponically were treated Pb(NO3)2 with 15, 45 mg Pb²⁺ ∙ dm⁻³. After 6, 12, 24, 72 hours of the metal treatment the plants were collected and dissected organs. The plants accumulated and transported to ground part 0.88% and 1.35% of total accumulated lead for the lower and higher dose of Pb²⁺ respectively. The level of GSH was differed and depended on organs, dose and time treatment of Pb²⁺. We investigate (different pattern of expression) expression of RpGSH1 and RpPCS genes in roots. The study showed that glutathione and genes encoded enzymes connected with synthesis of him, plays important role in the process of detoxification in plant.
Rośliny robinii akacjowej uprawianej w hydroponice traktowane były Pb(NO3)2 w ilościach: 0, 15, 45 mg Pb²⁺ ∙ dm⁻³. Materiał roślinny zbierano po 6, 12, 24 i 72 godzinach od traktowania ołowiem i rozdzielono na organy. Procent pobranego ołowiu w przeliczeniu na suchą masę roślin przetransportowany do części nadziemnej wynosił 0,88 dla najwyższej dawki traktowania oraz 1,35 dla niższej. Poziom glutationu był zróżnicowany i zależał od badanego organu, dawki i czasu od potraktowania ołowiem. Odnotowano zróżnicowaną ekspresję RpGSH1 i RpPCS w korzeniach roślin. Badania wykazały, że glutation i geny szlaku jego biosyntezy odgrywają ważną rolę w procesie detoksykacji ołowiu w roślinie.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2008, 07, 3; 77-86
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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