Výsledky vyhledávání - "Joseph E. Valdez"

Back Cover: Single bubble in‐tube microextraction coupled with capillary electrophoresis

Autor: Sunkyung Jeong, Xamyo Noulorsaytour, Joseph E. Valdez, Doo Soo Chung

Publikováno v: ELECTROPHORESIS. 43

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a76326f95cfa305a5a6ee1ab138e16a
https://doi.org/10.1002/elps.202270016

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Problem-based learning approach enhances the problem solving skills in Chemistry of high school students

Autor: Joseph E. Valdez, Melfei E. Bungihan

Publikováno v: Journal of Technology and Science Education, Vol 9, Iss 3, Pp 282-294 (2019)
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

The study aimed to investigate the effectiveness of problem-based learning (PBL) approach in enhancing the problem solving skills in Chemistry of Grade 9 students in a public high school in the Philippines. The level of problem solving skills of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c15316833ccac73d917b3172426a061
http://www.jotse.org/index.php/jotse/article/view/631

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Facile and highly efficient three-phase single drop microextraction in-line coupled with capillary electrophoresis

Autor: Sunkyung Jeong, Wooyong Kwon, Natalia Miękus, Doo Soo Chung, Joseph E. Valdez, Joon Yub Kwon, Tomasz Bączek

Publikováno v: Journal of chromatography. A. 1655

A high-performance version of in-line, three-phase direct immersion-single drop microextraction (DI-SDME) coupled with capillary electrophoresis (CE) was demonstrated using a commercial CE instrument, and all the major and minor details were describe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84d6624f8b0967956072084d520f9b1f
https://pubmed.ncbi.nlm.nih.gov/34517164

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