Results 31 to 40 of about 60,128 (191)

Multianalyte Approach—Including Automated Preparation of Calibrators—for Validated Quantification of 82 Drugs in Whole Blood by Liquid Chromatography–Tandem Mass Spectrometry

Drug Testing and Analysis, EarlyView.
In forensic bioanalysis, often multianalyte approaches are used given their increased effectiveness but can be difficult to develop and maintain in the laboratory, for example, in terms of calibrator solution preparation. A fast, simple, and robust liquid chromatography–tandem mass spectrometry (LC–MS/MS) method for the quantification of 82 classic ...
Andrea E. Steuer, Maja Keller, Thomas Kraemer, Sandra N. Poetzsch   +3 more
wiley   +1 more source

Determination of Hormonal Growth Promotants in Beef Using Liquid Chromatography–Tandem Mass Spectrometry

Drug Testing and Analysis, EarlyView.
An LC–MS/MS method was developed and validated to detect 12 synthetic or endogenous hormonal growth promotants commonly utilized in the livestock industry in the United States at low pg/mg concentrations. ABSTRACT Hormonal growth promotants (HGPs) are a class of pharmaceutical agents commonly administered to cattle in the United States to improve ...
Mary Mosburg, Yajing Li, Emily Helmes, Tara D. Falt, Josephine F. Trott, Gina Solomon, Russell C. Hovey, Benjamin C. Moeller   +7 more
wiley   +1 more source

T-DNA promoter tagging in Nicotiana tabacum : a thesis presented in fulfilment of the requirements for the degree of Master of Philosophy in Genetics at Massey University, Palmerston North, New Zealand [PDF]

, 1997
Plant development is primarily controlled at the level of gene expression. In order to analyse this regulation it is necessary to isolate genes which are involved in organ development through cellular and tissue determination or which respond to ...
Kerr, Donald Haldane
core  

UHPLC‐QTOFMS Urine Drug Screening With Dilute‐and‐Shoot Sample Preparation and Vacuum‐Insulated Probe‐Heated Electrospray Ionization

Drug Testing and Analysis, EarlyView.
The new ionization technique, vacuum‐insulated probe‐heated electrospray, allows for a simple dilute‐and‐shoot sample preparation to be used with liquid chromatography time‐of‐flight mass spectrometry in urine drug screening. Comparison with a method relying on solid‐phase extraction and conventional electrospray ionization shows improved performance ...
Mira Sundström, Pirkko Kriikku, Ilkka Ojanperä, Carsten Baessmann, Anna Pelander   +4 more
wiley   +1 more source

Cultural methods of detection for microorganisms: recent advances and successes [PDF]

, 1997
Most microbiological methods require culture to allow organisms to recover or to selectively increase, and target organisms are identified by growth on specific agar media.
Jian, X., Watkins , J.
core  

The Impact of Triptorelin on Hormone Levels in Human and Its Metabolite Confirmation Using Liquid Chromatography–Ion Trap/Time‐of‐Flight Mass Spectrometry (LC/MS‐IT‐TOF) and Liquid Chromatography–Orbitrap (LC‐Orbitrap) for Doping Control Analysis

Drug Testing and Analysis, EarlyView.
Triptorelin (5–10) confirmation using LC/MS‐IT‐TOF and LC‐Orbitrap can be used as evidence of triptorelin abuse in doping control. ABSTRACT Triptorelin, a synthetic gonadotrophin‐releasing hormone (GnRH), is mainly used in the clinical treatment of prostate cancer.
Navaporn Saardpun, Cholsittapan Asawesna, Seksun Kaewklam, Premsant Sangkhum, Wisoot Kongchareonsombat, Thanit Kusamran, Darawan Pinthong   +6 more
wiley   +1 more source

Rapid and Simple Dispersive Liquid–Liquid Microextraction (DLLME) Sample Preparation for Propofol Analysis in Hair, Blood, and Urine by Gas Chromatography–Mass Spectrometry

Drug Testing and Analysis, EarlyView.
Development and validation of an extraction method based on dispersive liquid–liquid microextraction for the analysis by GC–MS of propofol in three different biological samples (blood, urine, and hair). The proposed method is very simple and rapid.
Sara Odoardi, Serena Mestria, Valeria Valentini, Giulia Biosa, Sabina Strano Rossi   +4 more
wiley   +1 more source

Role of Peptide Backbone Conformation on Biological Activity of Chemotactic Peptides [PDF]

, 1991
To investigate the role of peptide backbone conformation on the biological activity of chemotactic peptides, we synthesized a unique analog of N-formyl-Met-Leu-Phe-OH incorporating the C α,α disubstituted residue, dipropylglycine (Dpg) in place of Leu ...
Bhandary, Krishna K., Dentino, Andrew R., Devine, Michael J., Raj, Periathamby A., Wilson, Mark E.   +4 more
core   +1 more source

Anti‐Doping Testing at FIFA World Cup 2022

Drug Testing and Analysis, EarlyView.
The FIFA 2022 World Cup was fully accomplished by the Anti‐Doping Lab Qatar. The article describes the doping analysis work, achievements, and lab structure in details. ABSTRACT The 22nd FIFA World Cup, the world championship for national football teams, was held in Qatar from November 20th to December 18th, 2022.
Alanod D. AlQahtani, Wadha Abushareeda, Ariadni Vonaparti, Suhail Kraiem, Wesal ElSaftawy, Khadija Saad, Aisha Al‐Wahaibi, Nayla Hilal, Najib Dbes, Vandana Nimker, Alexis Weber, Alka Beotra, Mohammed Al Maadheed   +12 more
wiley   +1 more source

Reuse of UHT Milk Close to Expiring and Almond Okara in the Production of Fresh Cheese

Food Frontiers, EarlyView.
Reuse of UHT milk close to expiring and almond okara in the production of fresh cheese. ABSTRACT This study evaluated the possibility of recycling ultra‐high temperature (UHT) milk close to the expiry date in the production of fresh cheese fortified with almond okara, a by‐product of almond‐based beverage production.
Claudia Antonino, Giuseppe Natrella, Giusy Rita Caponio, Lilia Zago, Graziana Difonzo, Michele Faccia   +5 more
wiley   +1 more source