نتایج جستجو برای: تکنیک tlc

تعداد نتایج: 32600  

Journal: :Journal of chromatographic science 2011
Mieczysław Sajewicz Dorota Staszek Maja Natic Monika Waksmundzka-Hajnos Teresa Kowalska

In the previous paper from this series, we proposed mass spectrometric fingerprinting of complex botanical samples upon the examples of the pharmacologically important phenolic acids and flavonoids selectively extracted from Salvia lavandulifolia. In this study, we explore fingerprinting efficiency with a novel two-dimensional analytical system composed of the reversed-phase thin-layer chromato...

Journal: :The European respiratory journal 2010
P H Quanjer S Stanojevic J Stocks G L Hall K V V Prasad T J Cole M Rosenthal R Perez-Padilla J L Hankinson E Falaschetti M Golshan B Brunekreef O Al-Rawas J Kühr Y Trabelsi M S M Ip

In children, the ratio of forced expiratory volume in 1 s (FEV₁) to forced vital capacity (FVC) is reportedly constant or falls linearly with age, whereas the ratio of residual volume (RV) to total lung capacity (TLC) remains constant. This seems counter-intuitive given the changes in airway properties, body proportions, thoracic shape and respiratory muscle function that occur during growth. T...

Journal: :Journal of nuclear medicine technology 2000
A L Luebke D M Wilary D W Mahoney J C Hung

OBJECTIVE Our study evaluated the accuracy and reliability of 3 radiochemical purity (RCP) measurement methods of 99mTc-sestamibi. A regular-sized (1.0 cm x 9.0 cm) Whatman 31 ET Chr paper strip (regular 31 ET) also was included in our evaluation because of its ease in handling. METHODS The miniaturized and regular 31 ET methods were compared with the standard RCP testing method (aluminum oxi...

Journal: :iranian journal of toxicology 0
علیرضا تیمچه حریری alireza timcheh-hariri department of medical toxicology research center, mashhad university of medical sciences, mashhad, iran. مهدی بلالی مود mahdi balali-mood department of medical toxicology research center, mashhad university of medical sciences, mashhad, iran. محمود صادقی mahmood sadeghi department of medical toxicology research center, mashhad university of medical sciences, mashhad, iran. نیلوفر لاری niloofar lari department of medical toxicology research center, mashhad university of medical sciences, mashhad, iran. بامداد ریاحی زنجانی bamdad riahi-zanjani department of medical toxicology research center, mashhad university of medical sciences, mashhad, iran.

background: the current study was conducted to compare elisa with thin layer chromatography (tlc) methods for diagnosis of morphine in the urine. methods: positive urine samples for morphine confirmed by immunochromatographic strips were collected from the imam reza toxicology laboratory, mashhad university of medical sciences, mashhad, iran in 2012 for the current study. then, the collated uri...

2013
Mirza Bojić Vicente Simon Haas Darija Šarić Željan Maleš

Raw material, different formulations of foods, and dietary supplements of mate demands control of the content of bioactive substances for which high performance thin layer chromatography (TLC), described here, presents simple and rapid approach for detections as well as quantification. Using TLC densitometry, the following bioactive compounds were identified and quantified: chlorogenic acid (2....

2013
Irena Malinowska Marek Studziński Karolina Niezabitowska Maria Gadzikowska

Planar chromatography is a very useful tool for analysis of wide range of different mixtures. Thanks to its possibility for rapid separation of large number of samples simultaneously, low solvent consumption and ability to analyse rough material allow to receive precise and reliable results in short time and low cost. Miniaturization of planar techniques brings a lot of advantages, such as shor...

2016
Sorcha Bennett Joe Sullivan

Triple-Level Cell (TLC) NAND Flash memory at, and below, 20nm (nanometer) is still largely unexplored by researchers, and with the ever more commonplace existence of Flash in consumer and enterprise applications there is a need for such gaps in knowledge to be filled. At the time of writing, there was little published data or literature on TLC, and more specifically reliability testing, with a ...

2010
Brett J. West Shixin Deng

Morinda citrifolia L., commonly known as noni, is a growing global commodity. As such , there is a need for rapid and inexpensive identity tests of noni fruit and leaf products. Thin Layer Chromatography (TLC) methods w ere developed for the identification of deacetylasperulosidic acid in noni fruit and leaf products. TLC methods were also developed for the identification of scopoletin in noni ...

Journal: : 2022

نخستین گام در راستای تحلیل و ارزیابی ریسک‌های زنجیره تأمین شناسایی این ریسک‌ها است. روش‌های مرسوم بر اساس فیلترهای دستی یا خودکار داده‌­محور ارائه شده فیلتر به‌­دلیل محدودیت‌های نمونه‌گیری دارای مشکلات اعتبارسنجی هستند از طرف دیگر مبتنی داده، داده‌های ریسک که پیچیده مبهم هستند، عملکرد ضعیفی دارند. برای پرکرده خلل پژوهشی، پژوهش، چارچوبی تعاملی بین تحلیل‌­گر ماشین حجم وسیعی حوزه مواد غذایی با است...

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