Relevant bibliographies by topics / PTZ metody

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  1. Journal articles

Academic literature on the topic 'PTZ metody'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "PTZ metody"

1

Skrbic, Natasa, Ann-Katrin Pedersen, Sarah C. B. Christensen, Hans Christian Bruun Hansen, and Lars Holm Rasmussen. "A Novel Method for Determination of the Natural Toxin Ptaquiloside in Ground and Drinking Water." Water 12, no. 10 (2020): 2852. http://dx.doi.org/10.3390/w12102852.

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Ptaquiloside (PTA) is a carcinogenic compound naturally occurring in bracken ferns (Pteridium aquilinum). It is highly water soluble and prone to leaching from topsoil to surface and groundwaters. Due to possible human exposure via drinking water, PTA is considered as an emerging contaminant. We present a sensitive and robust method for analysis of PTA and its degradation product pterosin B (PtB) in groundwater. The method comprises two steps: sample preservation at the field site followed by sample pre-concentration in the laboratory. The preservation step was developed by applying a Plackett–Burman experimental design testing the following variables: water type, pH, filtering, bottle type, storage temperature, transportation conditions and test time. The best sample preservation was obtained by using amber glass bottles, unfiltered solutions buffered at pH 6, transported without ice, stored at 4 °C and analysed within 48 h. The recovery was 94% to 100%. The sample purification step had a pre-concentration factor of 250, and the recovery percentages of the entire method were 85 ± 2 (PTA) and 91 ± 3 (PtB). The limits of detection (LOD) of the full method were 0.001 µg L−1 and 0.0001 µg L−1 for PTA and PtB, respectively. The method enables sensitive monitoring of PTA and PtB in groundwater. Carcinogenic PTA was detected in one groundwater well (0.35 µg L−1).
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2

Bonacci, Ognjen, Tanja Roje-Bonacci, and Duje Bonacci. "Povezanost površinske temperature more i površinske temperature zraka." Geoadria 26, no. 1 (2021): 7–34. http://dx.doi.org/10.15291/geoadria.3408.

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Povezanost površinske temperature mora (PTM) i površinske temperature zraka (PTZ) izmjerene na malome otoku Hvaru (Jadransko more) ispituju se na godišnjim i mjesečnim vremenskim ljestvicama, koristeći se podacima za razdoblje od pedeset pet godina (1964. – 2018.). Analizirana su sljedeća tri indeksa PTM-a i PTZ-a: (1) apsolutni minimum, (2) srednja vrijednost, (3) apsolutni maksimum. Rezultati su istaknuli statistički značajan trend porasta za sva tri godišnja indeksa PTM-a. U slučaju PTZ-a trend niza apsolutnih minimalnih godišnjih vrijednosti nije statistički značajan. Za nizove srednjih i apsolutno maksimalnih godišnjih vrijednosti PTZ-a trend je statistički značajan na razini p < 0,01. Mjesečne analize indeksa PTM-a gotovo u svim mjesecima (osim u listopadu) imaju statistički značajne trendove povećanja. U slučaju PTZ-a, statistički značajan trend porasta svih analiziranih indeksa dogodio se preko ljeta (srpanj i kolovoz). Rezultati pokazuju da je analizirana regija, posebice mali jadranski otoci, ugrožena klimatskim promjenama, tj. globalnim zatopljenjem tijekom ljeta. Primjenom RAPS metode na minimalnom godišnjem PTM-u zabilježen je statistički značajni pomak 1988. godine. Deset godina poslije, 1998. godine, otkriven je statistički značajan pomak prema gore na srednjem i maksimalnom indeksu PTM-a i PTZ-a. U slučaju minimalnih godišnjih vrijednosti PTZ-a otkriven je statistički značajan pomak prema dolje, počevši od 1979. godine. U analiziranom slučaju otoka Hvara, zagrijavanje indeksa PTM-a veće je od zagrijavanje indeksa PTZ-a i događa se tijekom cijele godine (osim u listopadu).
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3

Nguyen, Thi Kim Lan, Ngoc Duy Nguyen, Van Phu Dang, Dinh Tuan Phan, Thai Hoa Tran, and Quoc Hien Nguyen. "Synthesis of Platinum Nanoparticles by Gamma Co-60 Ray Irradiation Method Using Chitosan as Stabilizer." Advances in Materials Science and Engineering 2019 (April 18, 2019): 1–5. http://dx.doi.org/10.1155/2019/9624374.

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Platinum nanoparticles were synthesized using the gamma-ray irradiation as a reducing factor and chitosan as a stabilizer. The prepared platinum nanoparticles were characterized using ultraviolet-visible spectroscopy (UV-Vis), transmission electron microscopy (TEM), and Fourier-transform infrared spectroscopy (FT-IR). The saturated conversion dose to reduce the Pt4+ to Pt0 was found to be about 14 kGy for initial Pt4+ concentration of 1 mM. The size of the platinum nanoparticles (1.4–1.6 nm) did almost not change with the increase of chitosan concentration from 0.5 to 2.0%. Thus, gamma Co-60 ray irradiation method is favorable for synthesizing PtNPs with the small sizes.
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4

Castro, Suzana L., Osmundo D. Pessoa Neto, Sergio R. B. Santos, et al. "A Flow-Injection Biamperometric Method for Determination of Pantoprazole in Pharmaceutical Tablets." Journal of AOAC INTERNATIONAL 88, no. 4 (2005): 1064–68. http://dx.doi.org/10.1093/jaoac/88.4.1064.

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Abstract A flow-injection biamperometric method for determination of pantoprazole (PTZ) in pharmaceutical tablets is reported for the first time. The reversible redox couples Fe3+/Fe2+, Fe(CN)63−/Fe(CN)64−, Ce4+/Ce3+, VO3−/VO2+, and I2/I− were tested as indicating redox systems for biamperometric determination of PTZ in a flow-injection assembly with optimized flow parameters. The best results were obtained using VO3−/VO2+, which showed to be a selective and sensitive biamperometric indicating system for PTZ even in the presence of excipients and antioxidants that typically are found in drugs. The analytical graph was linear (r = 0.99945) in the range from 10 to 100 mg/L using 25 mmol/L VO3− as the reagent and water as the carrier stream and applying 100 mV between the 2 platinum wire electrodes. The limits of detection and quantitation were 200 and 667 μg/L, respectively, with a sensibility of calibration of 22.6 mV/mg/L. The proposed method was successfully applied to determine PTZ in commercial pharmaceutical tablets with a mean relative error of 1.60% (n = 5) and mean relative standard deviation of 3.10%. Recoveries close to 100% showed good agreement between the expected amount of PTZ in tablets (40 mg) and the results found by the application of the proposed method and demonstrated that the formulations used in the tablet compositions do not interfere in the PTZ analysis. The system had good stability, with a relative standard deviation of 3.80% for 9 sequential injections of a 60 mg/L PTZ solution. A sampling rate of about 100 samples/h was obtained.
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5

Podgórska, Joanna. "Selected Methods of Measuring the Effectiveness of Healthcare Entities." Prace Naukowe Akademii im. Jana Długosza w Częstochowie. Pragmata tes Oikonomias 11 (2017): 53–70. http://dx.doi.org/10.16926/pto.2017.11.04.

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6

MORIMOTO, M., and K. FUJII. "A Flexible Gaze Detection Method Using Single PTZ Camera." IEICE Transactions on Information and Systems E90-D, no. 1 (2007): 199–207. http://dx.doi.org/10.1093/ietisy/e90-1.1.199.

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7

Abdelhameed, Ali S., and Samar A. Afifi. "A Validated HPLC-DAD Method for Simultaneous Determination of Etodolac and Pantoprazole in Rat Plasma." Journal of Chemistry 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/719801.

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A simple, sensitive, and accurate HPLC-DAD method has been developed and validated for the simultaneous determination of pantoprazole and etodolac in rat plasma as a tool for therapeutic drug monitoring. Optimal chromatographic separation of the analytes was achieved on a Waters Symmetry C18 column using a mobile phase that consisted of phosphate buffer pH~4.0 as eluent A and acetonitrile as eluent B in a ratio of A : B, 55 : 45 v/v for 6 min, pumped isocratically at a flow rate of 0.8 mL min−1. The eluted analytes were monitored using photodiode array detector set to quantify samples at 254 nm. The method was linear withr2=0.9999for PTZ andr2=0.9995for ETD at a concentration range of 0.1–15 and 5–50 μgmL−1for PTZ and ETD, respectively. The limits of detection were found to be 0.033 and 0.918 μgmL−1for PTZ and ETD, respectively. The method was statistically validated for linearity, accuracy, precision, and selectivity following the International Conference for Harmonization (ICH) guidelines. The reproducibility of the method was reliable with the intra- and interday precision (% RSD) <7.76% for PTZ and <7.58 % for ETD.
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8

Al Bratty, Mohammad, Neelaveni Thangavel, Ramalingam Peraman, et al. "HPLC–DAD method for investigating pantoprazole for its stress-dependent degradation by photolysis and oxidation." Acta Chromatographica 32, no. 4 (2020): 247–55. http://dx.doi.org/10.1556/1326.2019.00709.

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A reversed-phased high-performance liquid chromatography–diode-array detection (HPLC–DAD) method has been developed for investigating the stress-dependent degradation of pantoprazole (PTZ) by a photolytic and oxidative mechanism. The developed method separated PTZ from its degradation products on a C18 column with a mobile phase consisted of methanol and water (60:40, v/v; pH 3.0) at a flow rate of 1 mL/min. The linear regression coefficient of 0.9995 was obtained for a concentration range from 5 to 25 μg/mL. The % relative standard deviation for repeatability and intermediate precision were below 0.5% and 1.5%, respectively, while the sensitivity of the method was demonstrated by a limit of detection value of 0.25 μg/mL. The stress sample analyses for PTZ results revealed the formation of a total of 18 degradation products, and out of them, 9 degradation products were common for both photolytic and oxidative degradations. Further, the oxidation by azobisisobutyronitrile produced the highest number of degradation products (11 impurities), 3 of which are more hydrophobic than PTZ. In photolytic degradation, 8 and 7 degradation products were observed with UV radiation and sunlight exposure, respectively. Furthermore, the degradation of pantoprazole sodium injection formulation was carried out under the same stress conditions, and it revealed the formation of 3 common impurities under both stress conditions, but other impurities were not detected in the formulations. Finally, 3 common impurities formed in formulations of PTZ injections, viz., sulfone, N-oxide, and N-oxide sulfone impurities, were identified by spike analyses.
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9

Gaffar, Shabarni, Purba Upay, Iman Permana Maksum, et al. "Ekspresi Prethrombin-2 Manusia Recombinan dalamPichia pastoris dan Optimasi Kondisi Ekspresinya." Indonesian Journal of Pharmaceutical Science and Technology 4, no. 1 (2017): 27. http://dx.doi.org/10.15416/ijpst.v4i1.9766.

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Pretrombin merupakan prekursor dari trombin yang memiliki aktivitas proteolitik. Trombin merubah fibrinogen menjadi benang fibrin yang salah satu aplikasinya adalah dapat digunakan sebagai lem untuk menggantikan teknik jahitan pasca bedah. Aplikasi trombin untuk pembuatan lem fibrin menuntut diproduksinya trombin rekombinan. Tujuan dari penelitian ini adalah ekspresi gen pretrombin-2 (PT2) manusia rekombinan menggunakan sistem ekspresi Pichia pastoris. Gen pengode PT2 dirancang sesuaidengan kodon preferensi P. pastoris. Fragmen PT2 diamplifikasi dengan metoda PCR dengan penambahan sisi restriksi EcoR1 pada ujung 5’ dan sisi restriksi SacII pada ujung 3’. Produk PCR yang berukuran 924 pb diligasi dengan vektor ekspresi pPICZaB untuk P. pastoris dan disubkloning dalam inang Escherichia coli. Urutan nukleotida dikonfirmasi dengan metoda dideoxy Sanger. Plasmid rekombinan pPICZaB-PT2 kemudian digunakan untuk mentransformasi P. pastoris SMD1168 defisien protease dengan metoda elektroporasi. Hasil penelitian menunjukkan bahwa gen PT2 berhasil diamplifikasi dan dikloning dalam E. coli. Analisis restriksi dan penentuan urutan DNA menunjukkan bahwa PT2 rekombinan 100% homologi dengan hasil rancangan. Hasil ekspresi PT2 oleh P. pastoris menggunakan metanol sebagai inducer memperlihatkan bahwa PT2 dengan berat molekul 35 kDa berhasil diekspresikan. Optimasi kondisi ekspresi melalui variasi konsentrasi metanol sebagai inducer dan sorbitol sebagai sumber karbon tambahan menunjukkan bahwa metanol 2% dan sorbitol 2% merupakan kondisi optimum ekspresi PT2.
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10

Bergman, John. "Oto Ja: Semiotyka maski w pracy amerykańskiego zespołu Geese Theatre Company." Pamiętnik Teatralny 68, no. 2 (2019): 53–64. http://dx.doi.org/10.36744/pt.76.

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John Bergman jako twórca zespołu teatralnego Geese Theatre Company USA i współtwórca Geese Theatre Company UK od prawie czterdziestu lat, w różnych miejscach na świecie, na wielu kontynentach (Ameryka Północna, Europa, Australia) prowadzi terapię dla osadzonych mężczyzn, kobiet i młodocianych, wykorzystując transformacyjne możliwości teatru. W publikowanym tekście pokazuje swoją drogę twórczą od pracy artystycznej w teatrach alternatywnych do działań dramaterapeutycznych i artystycznych prowadzonych w więzieniach. Odsłania kulisy narodzin autorskiej metody pracy z maskami (metody Geese Theatre Company) i jej ogromne znaczenie w pracy teatralnej z więźniami, zarówno w Stanach Zjednoczonych, na wyspach brytyjskich (Geese Theatre Company UK), jak i w innych krajach. Wyjaśnia, że stosowana przez niego i jego zespoły metoda pracy teatralnej narodziła się z konkretnego doświadczenia – z międzyludzkiego spotkania, w którym połączenie wcześniej nieuwzględnianych indywidualnych perspektyw doprowadziło do odkrycia zaskakujących i skutecznie działających rozwiązań. Wkład osób osadzonych oraz ich bliskich w narodziny podstawowego narzędzia pracy, jakim dla Geese Theatre Company jest maska, pozostaje niekwestionowany.
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