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Artículos de revistas sobre el tema "Mcilvain"

Autor: Grafiati
Publicado: 27 de julio de 2024
Última modificación: 31 de julio de 2025

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1

Esati, Ni Ketut, Kadek Duwi Cahyadi, and Gusti Ayu Dewi Lestari. "UJI KUALITATIF DAN KUANTITATIF TETRASIKLIN DALAM SIMULASI SAMPEL SECARA SPEKTROFOTOMETRI UV-VIS." Jurnal Farmamedika (Pharmamedica Journal) 8, no. 1 (2023): 56–66. http://dx.doi.org/10.47219/ath.v8i1.190.

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Analisis kualitatif dengan pereaksi warna merupakan metode pendahuluan yang dapat dilakukan untuk menentukan keberadaan suatu zat. Perbedaan sensitivitas pada tiap pereaksi terhadap suatu zat dapat berbeda-beda. Uji kuantitatif tetrasiklin pada sampel menggunakan metode spektrofotometri UV-Vis memerlukan metode ekstraksi yang paling optimal sehingga memberikan hasil yang baik. Tujuan dari penelitian ini adalah untuk mencari batas deteksi suatu pereaksi warna terhadap tetrasiklin, dan analisis kuantitatif yang diawali dengan optimasi metode ekstraksi tetrasiklin dari sampel. Selain itu juga dil
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2

Chico, Joaquim, Frederique van Holthoon, and Tina Zuidema. "Ion Suppression Study for Tetracyclines in Feed." Chromatography Research International 2012 (September 27, 2012): 1–9. http://dx.doi.org/10.1155/2012/135854.

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Ion suppression in analysis of tetracyclines in feed was studied. The conventional analysis consists of a liquid extraction followed by a clean-up step using solid phase extraction (SPE) technique and analysis of the tetracyclines by liquid chromatography and mass spectrometric detection. Various strategies for extraction and cleanup were tested in the present work, and the effectiveness to decrease the ion suppression on the MS/MS signals was evaluated. Four sample treatment methods were tested with five different feed samples. Extraction solvents tested were McIlvaine buffer and a mixture of
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3

Schmidt, Anelise M., Denise S. Azambuja, and Emilse M. A. Martini. "Semiconductive properties of titanium anodic oxide films in McIlvaine buffer solution." Corrosion Science 48, no. 10 (2006): 2901–12. http://dx.doi.org/10.1016/j.corsci.2005.10.013.

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4

Sherling, Rankin. "Bishop McIlvaine, Slavery, Britain and the Civil War by Richard W. Smith." Journal of Southern History 82, no. 1 (2016): 169–70. http://dx.doi.org/10.1353/soh.2016.0016.

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5

Funes, Gustavo J., Paula L. Gómez, Silvia L. Resnik, and Stella M. Alzamora. "Application of pulsed light to patulin reduction in McIlvaine buffer and apple products." Food Control 30, no. 2 (2013): 405–10. http://dx.doi.org/10.1016/j.foodcont.2012.09.001.

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6

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2004." College & Research Libraries 66, no. 2 (2005): 171–83. http://dx.doi.org/10.5860/crl.66.2.171.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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7

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2004–2005." College & Research Libraries 66, no. 5 (2005): 456–69. http://dx.doi.org/10.5860/crl.66.5.456.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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8

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2005." College & Research Libraries 67, no. 2 (2006): 177–90. http://dx.doi.org/10.5860/crl.67.2.177.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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9

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2005-20061." College & Research Libraries 67, no. 5 (2006): 463–77. http://dx.doi.org/10.5860/crl.67.5.463.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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10

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2006." College & Research Libraries 68, no. 2 (2007): 183–96. http://dx.doi.org/10.5860/crl.68.2.183.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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11

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2006–2007." College & Research Libraries 68, no. 5 (2007): 446–57. http://dx.doi.org/10.5860/crl.68.5.446.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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12

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2007." College & Research Libraries 69, no. 2 (2008): 175–87. http://dx.doi.org/10.5860/crl.69.2.175.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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13

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2007–081." College & Research Libraries 69, no. 5 (2008): 459–75. http://dx.doi.org/10.5860/crl.69.5.459.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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14

Witte, Sarah, and Mary Cargill. "Selected Reference Works, 2007–08." College & Research Libraries 70, no. 2 (2009): 178–94. http://dx.doi.org/10.5860/0700178.

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This article follows the pattern set by the semiannual series initiated by the late Constance M. Winchell more than fifty years ago and continued first by Eugene Sheehy and then by Eileen McIlvaine. Because the purpose of the list is to present a selection of recent scholarly and general works, it does not pretend to be either well balanced or comprehensive. A brief roundup of new editions of standard works is provided at the end of the articles. Code numbers (such as AC527) have been used to refer to titles in the Guide to Reference Books, 11th ed. (Chicago: ALA, 1996).
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15

Amani, Omid, and Zohreh Ramin. "E. L. Doctorow's The Waterworks: A Polyphonic Novel." International Letters of Social and Humanistic Sciences 38 (August 2014): 64–69. http://dx.doi.org/10.18052/www.scipress.com/ilshs.38.64.

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The present article sets to examine the applicability of Mikhail Bakhtin's concepts of polyphony and heteroglossia to E. L. Doctorow's The Waterworks. Doctorow, by deploying postmodern historiography and blurring the line between the real and the marvelous, portrays nineteenth century New York revisionistically and likewise, depicts how the amalgamation of the monologic, authoritarian power of the imperious capitalism as Augustus Pemberton or the real historical figure William Magear Tweed with the 'excentrics' gives rise to a dialogic, polyphonic quality within the novel. Also, discussed is t
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16

Patyra, Ewelina, and Krzysztof Kwiatek. "Analytical procedure for the determination of tetracyclines in medicated feedingstuffs by liquid chromatography-mass spectrometry." Journal of Veterinary Research 60, no. 1 (2016): 35–41. http://dx.doi.org/10.1515/jvetres-2016-0006.

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Abstract Introduction: The article presents a rapid and simple analytical procedure for determination of four tetracyclines (oxytetracycline, tetracycline, chlortetracycline, and doxycycline) in animal medicated feedingstuffs. Material and Methods: Two-gramme samples were extracted by a Na2EDTA-McIlvaine buffer (pH 4)/methanol mixtures (40/60, v/v). The determination was achieved by liquid chromatography using a Zorbax Eclipse XDB C18 analytical column with mass spectrometer detection (LC-MS). Results: Recoveries of the antibiotics from spiked feed samples ranged from 78.2% to 113.5%. The LOD
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17

Yanti, Sahri. "ANALISIS KADAR RESIDU ANTIBIOTIK DALAM DAGING AYAM POTONG YANG BEREDAR DI KOTA MATARAM." Jurnal TAMBORA 1, no. 2 (2016): 50–55. http://dx.doi.org/10.36761/jt.v1i2.136.

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Analisis kuantitatif residu antibiotik dalam daging ayam potong yang beredar di Kota Mataram telah dilakukan dari bulan September hingga Oktober 2011. Pengambilan sampel dilakukan secara acak di tiga lokasi Pasar, Supermarket HERO, KFC dan Kentuku. Analisis kimia yang dilakukan melibatkan proses ekstraksi, sentrifugasi dan pengukuran dengan HPLC. Pada proses ekstraksi, pelarut yang digunakan yaitu Mcilvaine EDTA yang mampu memisahkan antibiotik dalam daging. Analisis kualitatif dengan HPLC mengindikasikan keberadaan residu antibiotik Oksitetrasiklin dalam sampel daging ayam potong dari Kota Ma
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18

Azab, Shereen M., and Amany M. Fekry. "Role of Green Chemistry in Antipsychotics’ Electrochemical Investigations Using a Nontoxic Modified Sensor in McIlvaine Buffer Solution." ACS Omega 4, no. 1 (2019): 25–30. http://dx.doi.org/10.1021/acsomega.8b01972.

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19

Doyle, Don H. "Bishop McIlvaine, Slavery, Britain & the Civil War. By Richard W. Smith. (XLIBRIS, 2014. Pp. 328. $29.99.)." Historian 81, no. 1 (2019): 126–27. http://dx.doi.org/10.1111/hisn.13082.

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20

Pena, Angelina L., Celeste M. Lino, and M. Irene N. Silveira. "Determination of Tetracycline Antibiotics in Salmon Muscle by Liquid Chromatography Using Post-Column Derivatization with Fluorescence Detection." Journal of AOAC INTERNATIONAL 86, no. 5 (2003): 925–29. http://dx.doi.org/10.1093/jaoac/86.5.925.

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Abstract A simple and accurate cleanup procedure using polymeric sorbent was developed for the determination of oxytetracycline (OTC) and tetracycline (TC) residues in salmon muscle. It was applied to the analysis of 20 salmon samples during a month period. The OTC and TC residues were extracted with ethylenediaminetetracetic acid (EDTA)–McIlvaine buffer acidified at pH 4.0 and cleaned up by solid-phase extraction with a polymeric sorbent. The advantages of the polymeric sorbent over the silica-based sorbent in the cleanup of salmon muscle samples are described. A liquid chromatographic method
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21

Sun, Bao Li, Yi Wei Dong, Hong Shan, Jin Li Huang, and Cheng Feng Tong. "Development of a SPE-HPLC-PDA Method for the Determination of Tetracyclines in Soils." Applied Mechanics and Materials 675-677 (October 2014): 288–94. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.288.

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A simple and rapid SPE-HPLC/PDA method has been developed for the quantitative determination of tetracyclines in soils. An ultrasonic extraction system for the soil samples was confirmed as a combination of a 1:2 ratio of EDTA-McIlvaine buffer solution with methanol by comparing the extraction efficiency of 4 solvents and optimising the combination ratio. The soil extracts were purified and concentrated by Oasis-MAX cartridge followed by HPLC separation and PDA detection. The optimal chromatographic condition effectively separated the object and interfering substance, which can improve the sen
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22

CONDON, SANTIAGO, and FRANCISCO J. SALA. "Heat Resistance of Bacillus subtilis in Buffer and Foods of Different pH." Journal of Food Protection 55, no. 8 (1992): 605–8. http://dx.doi.org/10.4315/0362-028x-55.8.605.

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Heat resistance of a strain of Bacillus subtilis was measured in homogenized canned mushrooms, peas, lentils, meat balls, and tomato; in rehydrated potato purée; and in buffer at selected pH values, to detect any influence of pH and/or-menstruum upon heat resistance. Heat resistance experiments were carried out under continuous monitoring of pH. Dt = 1 min in buffer at pH 4.2, 5.2, 6.1, and 7.1 was obtained at 89.1, 97.3, 104.4, and 107.1°C, respectively. The effect of pH was lower the higher the temperature of treatment. The z values ranged from 6.4 at pH 7.1 to 10.3 at pH 4.2. Heat resistanc
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23

Guo, Liang, Yiqiang Chen, Liying Zhang, Wenjun Yang, and Pingli He. "Development and Validation of a Liquid Chromatographic/Tandem Mass Spectrometric Method for Determination of Chlortetracycline, Oxytetracycline, Tetracycline, and Doxycycline in Animal Feeds." Journal of AOAC INTERNATIONAL 95, no. 4 (2012): 1010–15. http://dx.doi.org/10.5740/jaoacint.11-087.

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Abstract A selective and accurate LC/MS/MS method for the simultaneous determination of chlortetracycline (CTC), oxytetracycline (OTC), tetracycline (TC), and doxycycline (DC) in animal feeds was developed. Samples were extracted with Na2EDTA-McIlvaine buffer and further purified with Oasis HLB SPE columns. The purified extract was separated on an Xbridge C18 column and detected by LC/MS/MS with positive electrospray ionization in the multiple reaction monitoring mode. This method provided average recoveries of 80.9 to 119.5%, with CVs of 1.7 to 9.8% in the range of 0.5 to 50 mg/kg CTC, OTC, T
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24

Yamamoto, Yuzo, and Fusao Kondo. "Determination of Halofuginone and Amprolium in Chicken Muscle and Egg by Liquid Chromatography." Journal of AOAC INTERNATIONAL 84, no. 1 (2001): 43–46. http://dx.doi.org/10.1093/jaoac/84.1.43.

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Abstract A liquid chromatographic (LC) method was developed for simultaneous measurement of halofuginone (HFN) and amprolium (APL) in chicken muscle and egg. HFN and APL were extracted from chicken muscle and egg with acetonitrile. In chicken egg, they were partially purified by solid-phase extraction (SPE) to separate them from impurities. The LC separation was performed on a 4.6 mm id × 250 mm TSK-gel ODS-80TM column using acetonitrile–McIlvaine buffer, pH 3.4, containing 0.01M sodium lauryl sulfate (42 + 58) as the mobile phase. Ultraviolet detection of HFN and APL was performed at waveleng
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25

Kanda, Maki, Tomoto Kusano, Setsuko Kanai, et al. "Rapid Determination of Fluoroquinolone Residues in Honey by a Microbiological Screening Method and Liquid Chromatography." Journal of AOAC INTERNATIONAL 93, no. 4 (2010): 1331–39. http://dx.doi.org/10.1093/jaoac/93.4.1331.

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Abstract A rapid and efficient method was developed for the simultaneous determination of seven fluoroquinolone (FQ) residues: norfloxacin, ciprofloxacin, danofloxacin, enrofloxacin, orbifloxacin, sarafloxacin, and difloxacin in honey. The samples were first screened with a microbiological method by using test plates made from metal-free purified agar seeded with Bacillus subtilis BGA. When a sample was found to contain FQ residues by using the microbiological method, it was analyzed by LC with fluorescence detection (LC/FL). FQs were extracted with Na2EDTA-McIlvaine buffer and purified by a d
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26

Abd Ali, Layth I. "New Fluorescence Quenching Approach for Determination of Valsartan in Certain Tablets and Spiked Biological Fluids." ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 8, no. 2 (2020): 82–90. http://dx.doi.org/10.14500/aro.10761.

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A new, simple, selective, sensitive, fast, economical, and reliable fluorescence quenching method for the quantitation of valsartan was investigated using basic fuchsin act as a fluorometric dye. The method was depended on the detection quenching influence of valsartan on the fluorescence intensity of basic fuchsin and the reaction between valsartan and basic fuchsin in a McIlvaine buffer medium at pH = 6 to yield a new basic fuchsin–valsartan non-fluorescent complex. The excitation and emission of basic fuchsin fluorescence signal were identified at 535 and 728 nm, respectively. A fluorescenc
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27

Shine, Keith. "Basic meteorology. A physical outline, R. McIlveen, van Nostrand Reinhold (UK), 457pp + xxii, Price: £15.95." Journal of Climatology 8, no. 1 (1988): 98–100. http://dx.doi.org/10.1002/joc.3370080113.

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28

Skorupa, Agata, Slawomir Michalkiewicz та Magdalena Jakubczyk. "Highly sensitive determination of α-lipoic acid in pharmaceuticals on a boron-doped diamond electrode". Open Chemistry 19, № 1 (2021): 843–54. http://dx.doi.org/10.1515/chem-2021-0075.

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Abstract A simple, highly sensitive, and selective differential pulse voltammetry method for the determination of α-lipoic acid (LA) in pharmaceutical preparations was developed and validated. The method is based on a quasi-reversible, diffusion-controlled, one-electron anodic oxidation of LA on a boron-doped diamond electrode (BDDE) in a McIlvaine (citrate-phosphate, C-PB) buffer solution at pH 3.0. For the first time, this environment was used for LA determination. A linear calibration curve was obtained within the concentration range 5.82 × 10−8 to 4.00 × 10−4 mol L−1 with a correlation coe
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29

Patyra, Ewelina, Ewelina Kowalczyk, and Krzysztof Kwiatek. "Determination of Chlorotetracycline and Doxycycline in Medicated Feedingstuffs by Liquid Chromatography." Bulletin of the Veterinary Institute in Pulawy 56, no. 3 (2012): 329–33. http://dx.doi.org/10.2478/v10213-012-0058-5.

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Abstract High performance liquid chromatography method with diode array detection (HPLC-DAD) was developed and optimised for the determination of tetracyclines (TCs) in medicated feedingstuffs. The extraction of the analyte from feedingstuffs was performed with Na2EDTA-McIlvaine buffer (pH 2.5 and pH 4). The extracts were cleaned up by solid phase extraction using octadecyl cartridges (C18). The samples were dried up and redissolved in the mixture of oxalic acid and methanol. Separation was performed on reserved phase column (Phenomenex C18, 250 x 4.6 mm, 5 μm) by multistep gradient elution, w
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30

Salis, Severyn, Simone Dore, Nicola Rubattu, Vittoria D’Ascenzo, Francesca T. Cherchi, and Stefano A. Lollai. "The Development and Validation of an LC–Orbitrap–HRMS Method for the Analysis of Four Tetracyclines in Milk and Its Application to Determine Oxytetracycline Concentrations after Intramuscular Administration in Healthy Sarda Ewes and Those Naturally Infected with Streptococcus uberis." Separations 11, no. 8 (2024): 242. http://dx.doi.org/10.3390/separations11080242.

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An LC–Orbitrap–HRMS method was developed and validated for the simultaneous determination of four tetracyclines—oxytetracycline (OTC), tetracycline (TC), doxycycline (DC), and chlortetracycline (CTC)—in milk. This method involves sample extraction with McIlvaine–EDTA buffer solution (pH 4) and solid-phase extraction (SPE) with Oasis HLB cartridges, followed by the evaporation of the extract and its reconstitution with a 14% methanol aqueous solution before injection into the instrumental system. This method has been validated in terms of linearity, sensitivity, selectivity, precision, and accu
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31

Li, Lanqing, Mingxing Sun, Hui Zhou, et al. "Response Surface Optimization of a Rapid Ultrasound-Assisted Extraction Method for Simultaneous Determination of Tetracycline Antibiotics in Manure." Journal of Analytical Methods in Chemistry 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/290903.

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A rapid and cleanup-free ultrasound-assisted extraction method is proposed for the simultaneous extraction of oxytetracycline, tetracycline, chlortetracycline, and doxycycline in manure. The analytes were determined using high-performance liquid chromatography with ultraviolet detector. The influence of several variables on the efficiency of the extraction procedure was investigated by single-factor experiments. The temperature, pH, and amount of extraction solution were selected for optimization experiment using response surface methodology. The calibration curves showed good linearity (R2&gt
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32

McIlveen, Peter. "Counsellors' Personal Experience and Appraisal of My Career Chapter." Australian Journal of Career Development 16, no. 2 (2007): 12–19. http://dx.doi.org/10.1177/103841620701600204.

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This study investigated a qualitative career assessment and counselling procedure that was founded upon a constructivist, narrative approach to career counselling, My Career Chapter: A Dialogical Autobiography(McIlveen, 2006). Counsellors were trained in the use of the procedure and then applied it to themselves in an intensive workshop format. Intepretative phenomenological analysis was used for the research methodology. Counsellors were then interviewed to determine (a) their personal experience of My Career Chapter and (b) their appraisal of its alignment with a set of recommendations for t
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33

Yano, Jun. "Electrochemical Response to Dissolved Hydroquinone on Insulating Polyaniline-modified Electrode in Less Acidic Solution and Enhancement of the Conductivity of Polyaniline." Journal of New Materials for Electrochemical Systems 15, no. 4 (2012): 237–39. http://dx.doi.org/10.14447/jnmes.v15i4.36.

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A conductive polymer, polyaniline (PANI), was easily prepared on an electrode surface as a stable film by the electropolymerization of aniline in acidic solution. In McIlvain’s buffer solution with a pH that exceeded 4, no redox current by the dissolved species was observed on the PANI-modified electrode because PANI acted as an electric insulator. However, in a less acidic solution, the redox current of the dissolved hydroquinone was evident because hydroquinone selectively permeates through the PANI film to reach the electrode substrate. The results of steady-state current-potential curves f
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34

Widiastuti, R., and Y. Anastasia. "Determination of tetracycline residues in dairy milk powder and fresh dairy milk by HPLC method." IOP Conference Series: Earth and Environmental Science 1001, no. 1 (2022): 012039. http://dx.doi.org/10.1088/1755-1315/1001/1/012039.

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Abstract Tetracycline residues are group of antibiotics found in animal products such as dairy milk. In this study, the occurrence of tetracycline residues in 45 dairy milk powder and 24 fresh dairy milk samples have been investigated. Tetracycline residue were extracted from milk samples using McIlvine buffer and purified with a solid phase extraction (SPE) C18 column. Residues were detected through HPLC-PDA at wavelengths of 355 and 368 nm. Three forms of tetracyclines were discovered in the 45 milk powder samples, namely; oxytetracycline (31.75 ng/g), tetracycline (28.02 ng/g) and chlortetr
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35

Patyra, Ewelina, Krzysztof Kwiatek, Carolina Nebot, and Rosa Elvira Gavilán. "Quantification of Veterinary Antibiotics in Pig and Poultry Feces and Liquid Manure as a Non-Invasive Method to Monitor Antibiotic Usage in Livestock by Liquid Chromatography Mass-Spectrometry." Molecules 25, no. 14 (2020): 3265. http://dx.doi.org/10.3390/molecules25143265.

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Antibiotics are active substances frequently used to treat and prevent diseases in animal husbandry, especially in swine and poultry farms. The use of manure as a fertilizer may lead to the dispersion of antibiotic residue into the environment and consequently the development of antibiotic-resistant bacteria. Most pharmaceutical active ingredients are excreted after administration, in some cases up to 90% of the consumed dose can be found in the feces and/or urine as parent compound. Therefore, due to antibiotic metabolism their residues can be easily detected in manure. This article describes
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Muniowski, Łukasz. "How Much Do Bench Players Matter in the NBA? A Case Study of the Seattle SuperSonics/Oklahoma City Thunder|." Polish Journal for American Studies, no. 16 (2022) (December 22, 2022): 103–14. http://dx.doi.org/10.7311/pjas.16/2022.08.

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The National Basketball Association offers only 150 starting spots to the best basketball players in the world–five on each of the 30 teams it consists of–and, considering such factors as personal preferences, luck and salary cap, it is possible that a bench player on one team would be not so much a starter, but one of the two-three best players on a different one. This article analyzes two basketball players, Detlef Schrempf and Jim McIlvaine, whose career narratives will be discussed have played for the Seattle SuperSonics, a franchise which eventually relocated to the state of Oklahoma and
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37

Cruz, Rubens, Vinícius D'Arcádia Cruz, Juliana Gisele Belote, Marcelo de Oliveira Khenayfes, Claudia Dorta, and Luiza Helena dos Santos Oliveira. "Properties of a new fungal b-galactosidase with potential application in the dairy industry." Revista de Microbiologia 30, no. 3 (1999): 265–71. http://dx.doi.org/10.1590/s0001-37141999000300014.

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<FONT FACE="Symbol">b</font>-Galactosidase or <FONT FACE="Symbol">b</font>-D-galactoside-galactohydrolase (EC. 3.2.1.23) is an important enzyme industrially used for the hydrolysis of lactose from milk and milk whey for several applications. Lately, the importance of this enzyme was enhanced by its galactosyltransferase activity, which is responsible for the synthesis of transgalactosylated oligosaccharides (TOS) that act as functional foods, with several beneficial effects on consumers. Penicillium simplicissimum, a strain isolated from soil, when grown in semi-solid m
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Brandão, Alessandra Cunha, Rubens Paes de Arruda, Ed Hoffmann Madureira, João Flávio Panattoni Martins, Mayra Elena Ortiz D'Ávila Assumpção, and José Antônio Visintin. "Influência do glicerol e etilenoglicol e da criopreservação sobre o complexo DNA-Proteina de espermatozóides em garanhões." Brazilian Journal of Veterinary Research and Animal Science 43, supl. (2006): 68. http://dx.doi.org/10.11606/issn.1678-4456.bjvras.2006.26537.

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O processo de criopreservação causa estresse físico e químico aos espermatozóides, acarretando alterações bioquímicas, diminuição irreverssível da motilidade espermática, aumento da degeneração do DNA e liberação intracelular de enzimas e lipídeos. No presente estudo, foram estudadas a influência das estações não reprodutiva e reprodutiva, dos crioprotetores glicerol e etilenoglicol e do processo de congelação e descongelação sobre o complexo DNA-proteína de espermatozóides em garanhões. Foi comparados o sêmen puro, o sêmen puro e congelado sem crioprotetores, o sêmen diluído e exposto aos cri
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Tran Thanh, Mai, Mai Nguyen Thi Phuong, Duc Nguyen Ngoc, Canh Phan Quang, and Trang Luu Thi Huyen. "Determination of some Tetracycline antibiotics and their epimers residues in meat and meat products by liquid chromatography-tandem mass spectrometry (LC-MS/MS)." Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam 8, no. 1 (2025): 30–39. https://doi.org/10.47866/2615-9252/vjfc.4456.

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The study was conducted with the aim of developing and validating a method for determining the content of some tetracycline group substances including tetracycline (TC), oxytetracycline (OTC), chlortetracycline (CTC), metacycline (MC), doxycycline (DC) and epimers: 4-epi oxytetracycline (4-epi OTC), 4-epi tetracycline (4-epi TC), 4-epi chlortetracycline (4-epi CTC) in meat and meat products by liquid chromatography tandem mass spectrometry (LC-MS/MS). The sample processing procedure was quick and simple: the sample was extracted with McIlvaine-EDTA buffer, and the protein was precipitated with
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40

Poindexter, Carlton, Andrea Yarberry, Clifford Rice, and Stephanie Lansing. "Quantifying Antibiotic Distribution in Solid and Liquid Fractions of Manure Using a Two-Step, Multi-Residue Antibiotic Extraction." Antibiotics 11, no. 12 (2022): 1735. http://dx.doi.org/10.3390/antibiotics11121735.

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Antibiotic distribution and analysis within liquid and solid fractions of manure are highly variable due to each compound’s respective physiochemical properties. This study developed and evaluated a uniform method extracting 10 antibiotics from 4 antibiotic classes (tetracycline, sulfonamides, macrolides, and β-lactam) from unprocessed manure, solid–liquid separated manure, and composted solids. Through systematic manipulation of previously published liquid chromatography tandem mass spectrometry methods; this study developed an extraction protocol with optimized recovery efficiencies for vari
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41

Butler, Ryan J. "Bishop McIlvaine, slavery, Britain and the Civil War. By Richard W. Smith . Pp. xvi + 311. Bloomington, In: Xlibris, 2014. £12 ($19.99) (paper). 978 1 4797 0289 3." Journal of Ecclesiastical History 67, no. 2 (2016): 447–48. http://dx.doi.org/10.1017/s0022046915003206.

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42

Guo, Yawen, Zhaoyuan He, Pengfei Gao, et al. "Concurrent Determination of Tigecycline, Tetracyclines and Their 4-Epimer Derivatives in Chicken Muscle Isolated from a Reversed-Phase Chromatography System Using Tandem Mass Spectrometry." Molecules 27, no. 19 (2022): 6139. http://dx.doi.org/10.3390/molecules27196139.

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A quantitative and qualitative method using a high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) detection approach was developed and validated for the analysis of tigecycline, four tetracyclines and their three 4-epimer derivatives in chicken muscle. Samples were extracted repeatedly with 0.1 mol/L Na2EDTA–McIlvaine buffer solution. After vortexing, centrifugation, solid-phase extraction, evaporation and reconstitution, the aliquots were separated using a C8 reversed-phase column (50 mm × 2.1 mm, 5 µm) with a binary solvent system consisting of methanol and 0.01 mol/
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43

Radia, Zamoum. "Assessment of Tetracyclines Residues Contamination in Chicken Meat Samples of Algiers Slaughterhouses Level." Advances in Clinical Toxicology 8, no. 4 (2023): 1–11. http://dx.doi.org/10.23880/act-16000280.

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Food contamination with antimicrobial residues may occur, entailing assessment and monitoring of the contamination level in edible tissue. In that way, 151 chicken meat samples were randomly collected from Algiers slaughterhouses. Otherwise, two analytical methods are validated for the simultaneous determination of oxytetracycline, tetracycline, doxycycline and chlortetracycline residues in edible chicken tissues, by liquid chromatography combined with mass spectrometry detection. Beforehand, an extraction step is performed. Indeed, acetonitrile is used as an extraction solvent for the qualita
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44

Paradhipta, Dimas Hand Vidya, Seong Shin Lee, Byeongsam Kang, et al. "Dual-Purpose Inoculants and Their Effects on Corn Silage." Microorganisms 8, no. 5 (2020): 765. http://dx.doi.org/10.3390/microorganisms8050765.

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This study was conducted to screen dual-purpose lactic acid bacteria (LAB) from uncontrolled farm-scale silage, and then we confirmed their effects on corn silage. The LAB were isolated from eight farm-scale corn silages, and then we screened the antifungal activity against Fusarium graminearum and the carboxylesterase activity using spectrophotometer with p-nitrophenyl octanoate as substrate and McIlvane solution as buffer. From a total of 25 isolates, 5M2 and 6M1 isolates were selected as silage inoculants because presented both activities of antifungal and carboxylesterase. According 16S rR
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45

Hwang, Jee-hyun, Seungmi Lee, Ho Geon Lee, Dalwoong Choi, and Kyung-Min Lim. "Evaluation of Skin Irritation of Acids Commonly Used in Cleaners in 3D-Reconstructed Human Epidermis Model, KeraSkinTM." Toxics 10, no. 10 (2022): 558. http://dx.doi.org/10.3390/toxics10100558.

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Cleaners such as dishwashing liquids contain various chemicals that cause skin damage. Alkaline agents used in cleaners alter the lipid composition of the skin and damage the skin barrier. However, little is known about the effects of acids used in cleaners on the skin. Here, we investigated the effects of acidic pH on the skin and evaluated the skin irritation of acids commonly used in cleaners with a 3D-reconstructed human epidermis model, KeraSkinTM, according to OECD TG439. First, to examine the effects of acidic pH, we evaluated the skin irritation of citrate buffers (0.1 M, McIlvaine buf
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46

Rodrigues, Helena, Marta Leite, Beatriz Oliveira, and Andreia Freitas. "Antibiotics in honey: a comprehensive review on occurrence and analytical methodologies." Open Research Europe 4 (November 8, 2024): 125. http://dx.doi.org/10.12688/openreseurope.17664.2.

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Honey is a food of great nutritional importance and has always been used for human consumption. The production of honey and other beekeeping products depends on the proper functioning of this extremely important sector, as it has a direct impact on other sectors such as agriculture. The decline in bee colony numbers has been linked, among other factors, to bacterial diseases affecting bees, including American and European foulbrood, and Nosema spp. disease. In this matter, prophylactic or therapeutic use of veterinary drugs in apiculture is common but can lead to their accumulation in bees and
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47

Bradshaw, Ben. "On Definitions of “Success” and Contingencies Affecting Success in Community Forestry: A Response to Reed and McIlveen (2006)and Pagdee et al. (2006)." Society & Natural Resources 20, no. 8 (2007): 751–53. http://dx.doi.org/10.1080/08941920701429155.

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Yévenes, Karina, María José Ibáñez, Ekaterina Pokrant, et al. "A Suitable HPLC-MS/MS Methodology for the Detection of Oxytetracycline, Enrofloxacin, and Sulfachloropyridazine Residues in Lettuce Plants." Foods 13, no. 1 (2024): 153. http://dx.doi.org/10.3390/foods13010153.

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Oxytetracycline (OTC), enrofloxacin (EFX), and sulfachloropyridazine (SCP) are critically important antimicrobials (AMs) in both human and veterinary medicine, where they are widely used in farm animals. Lettuce has become a matrix of choice for studying the presence of residues of these AMs in plants, as the concentrations of residues detected in lettuce can range from ng to mg. While several analytical methodologies have been developed for the purpose of detecting AMs in lettuce, these currently do not detect both the parent compound and its active metabolites or epimers, such as in the case
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49

Hobgood, Jay S. "Fundamentals of weather and climate. Robin McIlveen, Chapman and Hall (London), 1992. No. of Pages: xxii + 497. Price: £19.95 (p/b). ISBN 0-442-31476-0." International Journal of Climatology 13, no. 4 (1993): 461. http://dx.doi.org/10.1002/joc.3370130409.

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Patyra, Ewelina, Zbigniew Osiński, and Krzysztof Kwiatek. "Residues of veterinary antibiotics in solid natural and organic fertilizers—method development and sample analysis." Environmental Science and Pollution Research, June 18, 2024. http://dx.doi.org/10.1007/s11356-024-33956-w.

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AbstractLivestock excrement is used around the world as natural fertilizers or, after processing, as organic fertilizers for crops and grasslands. But due to the presence of veterinary antibiotics in them, they may pose a threat not only to the natural environment, mainly to soil microorganisms, but also to human and animal health. This article describes a method for detecting 21 antibacterial substances in solid natural and organic fertilizers. Antibiotics from fertilizers were extracted with a mixture of acetonitrile and McIlvain-Na2EDTA buffer, twice. The extracts were purified by solid pha
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